WO2000073105A1

WO2000073105A1 - Method and device for impact shielding

Info

Publication number: WO2000073105A1
Application number: PCT/JP2000/003027
Authority: WO
Inventors: Hideteru Shimizu
Original assignee: Hideteru Shimizu
Priority date: 1999-05-28
Filing date: 2000-05-11
Publication date: 2000-12-07
Also published as: WO2000073105A8

Abstract

A method and a device for impact shielding capable of safely binding an infant with less impact at the time of collision of a vehicle, wherein an impact shielding device (10) having a rear plate panel (20) bound primarily by a three-point seat belt (41) of the vehicle binds a protected body (infant) secondarily by a plurality of auxiliary belts (1a) to (1c) deploying forward from the rear side of the rear plate panel, and one or two or more of the auxiliary belts comprise a fuse mechanism part released by an overload in longitudinal direction and extending an effective length of the belt, whereby the fuse mechanism part overloaded according to the motion of the protected body at the time of collision of the vehicle is released gradually so as to steppingly relieve a shock given from the auxiliary belts to the protected body.

Description

Description Impact Shield Apparatus and Method

The present invention relates to an impact shielding device and method, and more particularly, to use in combination with a three-point seat belt of a vehicle or the like to safely shield the body of a user (infant, young person, etc.) from the impact of a vehicle collision. The present invention relates to an impact shield device and a method for restraining the device within an allowable space and impact strength.

Today, automobile seatbelts, which are required to be worn, are extremely effective in reducing damage in the event of a traffic accident. However, existing seat belts are good for adults with a certain physique, but on the other hand, infants, etc., have a small physique and change their postures even while sitting, so the seat belt force S In many cases, the seat belt is useless, for example, if the user does not lick or the body detaches from the seat belt.In this regard, the so-called child seat reduces the damage to infants, etc. In addition to working at the National Police Agency for dissemination, the mandatory use of this kind of seatbelt aids (child seats, etc.) has been legislated.

In other words, the present invention relates to the “impact shield” of 2.4.1 and 2.8 in “Infant seat” as defined in 2.4 of the Ministry of Transport's juvenile vehicle auxiliary riding device type designation standard. About. Here, the term “infant sheet” in 2.4 means that the infant is not directly restrained mainly by the seat belt, and any one of 2.4. A device that restrains or anchors backwards or forwards. “Impact Shield” in 2.4.1 and 2.8 refers to a device attached to the front of a child to restrict the child's forward movement in a head-on collision. Also 2.2 1 , The target category of child restraint systems (one example of the product according to the present invention) classified according to the weight range of the child corresponds to W2 (9 kg or more · 18 kg or less). Also, considering the structure of the vehicle (automobile), the permissible movement of the center of gravity of the head measured from the reference (Z) point on the seat side ≤ 600 mm, the permissible movement of the knee joint ≤ 700 mm, the head part composite acceleration tolerance ^{≤ 7 8 5 m Z s 2} , that tolerance ≤ 5 8 each reference value, such as 8 m / s ² of the chest synthesized acceleration been clarified. Background art

FIGS. 25 and 26 are diagrams (1) and (2) for explaining the prior art, and FIG. 25 shows an example of a conventional child seat (impact shield device). A child seat 91 is placed on the front seat of the vehicle, and the child seat 91 is restrained (fixed) to a seat side by a required (specified or provided) seat belt 41. The child seat 91 is provided with a pole member 93 standing on the crotch of an infant or the like, and two auxiliary belts 95 extending from the back of the child seat 91 around the shoulders of the infant or the like to the front. In use, the infant, etc., is seated on the shield seat 91 and the auxiliary belt 95 is connected to the buckle, etc., at the tip of the pole member, so that the infant, etc., faces forward with respect to the traveling direction of the car. Can be safely restrained.

However, the above-mentioned conventional child seat 91 is bulky and bulky, and is not easily fixed to the seat. Therefore, it is good to permanently install it in a private car, etc., but it is not easy to use it when riding in another person's car such as taxi. There is also an operational problem in obliging commercial vehicles such as taxis to have a permanent child seat 91.

Fig. 25 shows the normal state (dotted line) where the infant or the like is seated, and the state where the child is thrown forward by a collision (solid line). According to the conventional child seat 91, the waist center of gravity B of the infant is D = B 0 ( Large space), the remaining space available for impact shielding is small.

Also, according to the conventional shielded seat 91, there is play in the attachment of the seat belt 41 and the auxiliary belt 95, so that a child or the like that has been thrown forward has received almost no resistance from the beginning. It is accelerated, and then suddenly comes into contact with the auxiliary belt 95 at the position of the center of gravity of D = B1, and is rapidly decelerated by the auxiliary belt 95. If there is no play in the attachment of each belt, it is strongly restrained by the auxiliary belt 95 from the beginning, and the speed is rapidly reduced. At these times, very large impacts (reactions) are applied to the infant.

Figure 26 shows the relationship between the time and the speed / acceleration at the time of the vehicle collision. Since a large negative acceleration A is applied to the vehicle that collided at the timing of t0, the speed V is rapidly decreased, and the vehicle stops at the timing of t5. On the other hand, a relatively large positive acceleration a is applied to the infants in the car due to inertia, so if there is play in the mounting of each belt, the light infants will not receive any resistance from the beginning and their relative speed V rises sharply. Therefore, the initial velocity V when contacting the auxiliary belt 95 becomes large, and as a result, the infant or the like receives a very large reaction from the auxiliary belt 95. In addition, if there was no play in the attachment of each belt, a very large reaction was received from the auxiliary belt 95 from the beginning. Disclosure of the invention

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the related art, and an object of the present invention is to provide an impact shield device and a method for safely restraining an infant or the like during a vehicle collision with a small impact. .

The above problem is solved by, for example, the configuration of FIG. That is, the impact shield device of the present invention (1) (hereinafter also referred to as a seatbelt assisting device) In an impact shield device that uses a three-point seat belt of a vehicle or the like to shield the user's body from the impact of a collision, the impact shield device is deployed near the waist from near the shoulders on the back of the main body and in the bending direction. A back panel 20 having elasticity; a three-point auxiliary belt 1 a to 1 c extending around the shoulder and crotch from the back of the back panel to the front abdomen; and both shoulders of the auxiliary belt Connecting members 5 and 7 for detachably connecting the belt 1a, lb and the crotch belt 1c near the abdomen, and are provided inside the shoulder belt lb (1a) near the shoulder, and above the vehicle And a shoulder loop 15b (15a) for releasably gripping the seat belt deployed from the seat belt by an impact received from the seat belt. According to the present invention (1), for example, as shown in FIG. 19, the seat belt 41 a extending from the top of the vehicle or the like is gripped (passed) by the shoulder loop 15 b, so that the lower part of the vehicle or the like is formed. In addition to the seat belt 41b extending from the front, the seat belt 41a extending from the top of the vehicle, etc. can always cross the front of the back panel 20 stably. As shown in Fig. 5, the elastic repulsion of the back panel 20 at the time of collision is always reliably exerted.For example, as shown in Fig. 5, with the shoulder loop 15b holding the upper sheet belt 41a, When the body of an infant or the like suddenly sinks below (or is jumped forward) due to a collision, the upper half of the shoulder loop 15b is strongly pulled to the upper right by the upper seat belt 41a. As a result, the lower half of the cloth tape (such as magic tape) 14 b To peeling, for example, as shown in FIG. 6, the shoulder loop 1 5 b is opened (1 5 b '). This makes it possible for the child to squat down without difficulty, etc., and ultimately facilitates the operation of removing the seat belt 41 when leaving the seat. The same applies to the shoulder loop 15a.

Further, the impact shield device of the present invention (2) can be used together with a three-point seat belt of a vehicle or the like to shield the user's body from the impact at the time of a collision, as shown in FIG. 16, for example. In the compact shield device, A back panel 20 that extends from the vicinity of the shoulder to the waist and is elastic in the bending direction, and a three-point system that extends from the back of the back panel to both the shoulders and crotch and near the front abdomen A pair of male and female connecting members (for example, a combination of 5, 7) for detachably connecting the auxiliary belts 1a to 1c and the shoulder belts 1a, lb of the auxiliary belt and the crotch belt 1c around the abdomen. A male connecting member 7 having a convex plate 7a, a female connecting member 5 into which the convex plate 7a is inserted, and a waist bell which turns left and right from near the waist side of the back of the main body and expands to the abdomen. G 34a, 34b, provided with connecting metal fittings 80A, 80B having holes 82a, 82b to be fitted into the convex plate 7a at both end portions thereof; It is equipped with

According to the present invention (2), for example, as shown in FIG. 18, when attaching the present seatbelt assisting tool, the connecting fittings 80A and 80B are overlapped under the female connecting member 5. Then, through the holes 82a and 82b, pass the latching convex plate 7a of the male connecting member 7 and push it into the female connecting member 5 at a stretch. Alternatively, the fittings 8OA and 80B are fitted into the convex plate 7a in advance, and are pushed into the female connecting member 5 at a stretch. Also, when removing the seat belt aid, pressing the PRESS button of the connecting member 5 releases the connecting member 7 by the spring force of the connecting member 5 or the weight of the connecting member 7, and all the belts 1c, 34a, 3 4b is released all at once. Therefore, an extremely simple (simple) and sturdy structure can reliably and safely restrain / open infants. In addition, infants, etc. can easily use the seat belt assist device even outside the vehicle or in a state where the seat belt assist device 10 is already (fixed) restrained to the seat side by the vehicle seat belt 41. Can be attached / detached.

Preferably, in the present invention (3), in the above present invention (1) or (2), the crotch belt 1c is dissociated due to its longitudinal load to extend the effective length of the crotch belt. It has a crotch fuse 1A.

According to the present invention (3), the fuse 1A is dissociated due to excessive load (break ) Can temporarily alleviate the impact that an infant or the like receives from the crotch belt 1c. Further, the configuration in which the crotch belt 1c is extended allows the crotch of an infant or the like to be reliably restrained in the remaining impact shield space.

Also preferably, in the present invention (4), in the above inventions (1) to (3), the waist belt 34 extends to the abdomen around the waist side near the waist side of the back of the main body and extends in the abdomen. And having waist fuses 34A and 34B that dissociate due to the weight of the waist and extend the effective length of the waist belt.

According to the present invention (4), the configuration in which the lumbar fuses 34A and 34B are simultaneously dissociated (broken) due to excessive load can temporarily reduce the impact that the infant or the like receives from the lumbar belt 34. Further, the waist belt 34 is extended, so that the torso of an infant or the like can be securely restrained in the remaining impact shield space.

Also preferably, in the present invention (5), in the above-mentioned present invention (1), for example, as shown in FIG. 5, the shoulder loop 15b is formed at one end of a belt element 12b extending along the shoulder belt lb. One half turn in the opposite direction to the shoulder belt to form a half-duplex ring, and fix the upper half of the single side to the inside of the shoulder belt 1b (sewing, etc.). The lower half is removably adhered to each other with cloth tape 14b.

According to the present invention (5), the lower half (double side) of the shoulder loop 15b is removably adhered to each other with the cloth tape 14b, so that the upper half (single side) is formed. When the belt is strongly pulled upward by the seat belt 41a, the cloth tape 14b peels off and the shoulder loop 15b is automatically opened. Therefore, the user can easily remove the seat belt. The same applies to the shoulder loop 15a. Preferably, in the present invention (6), in the above-mentioned present invention (5), for example, as shown in FIGS. 1 and 5, the open side end of the shoulder loop 15b Can be pulled out by manual operation.

According to the present invention (6), the user can use the end portion of the shoulder loop 15b (the drawing loop). When the tape 51b) is pulled out, the cloth tape 14b is twisted off and the shoulder loop 15b is opened. Therefore, the user can easily open the shoulder loop 15b in any case. The same applies to the shoulder loop 15a. Also preferably, in the present invention (7), in the above-mentioned present invention (1) or (2), for example, as shown in FIGS. 13 to 15, a back panel 20 and both shoulder belts 1 a, 1 b The shock absorbing pad 42 having a cushioning elastic foaming resin or the like as a core material is provided inside each of the crotch belt 1c and / or the connecting members 5 and 7.Therefore, the back panel 20 and each belt 1a are provided. Shock and friction from ~ 1c can be effectively reduced.

Further, in the impact shielding method according to the present invention (8), the impact shielding device in which the front surface of the back panel is primarily restrained by a three-point seat belt of a vehicle or the like is characterized in that: An impact shielding method in which a protected object (infant, etc.) is secondarily restrained by a plurality of auxiliary velvets extending forward from the rear side, wherein one or two or more of the auxiliary belts are used. A fuse mechanism that dissociates due to the longitudinal load and extends the effective length of the belt is provided, and the fuse mechanism that is overloaded in accordance with the movement of the protected body during a vehicle collision is sequentially dissociated. By doing so, the impact that the protected body receives from the auxiliary belt is gradually reduced.

According to the present invention (8), the protected body (infant, etc.) that is thrown forward due to the collision of the vehicle or the like is not suddenly stopped by the auxiliary belt as in the related art, but the impact that the protected body receives from the auxiliary belt. By gradually decelerating the object to be protected and then stopping it, the protected object can finally be safely restrained (impact shield) with a small impact.

Further, in the impact shielding method according to the present invention (9), the impact shield device according to claim 1, which is primarily restrained by a three-point seat belt of a vehicle or the like, is capable of connecting the protected object (infant or the like) to two or more. This is an impact shielding method for restricting the position in the next direction. For example, as shown in FIG. By passing the belt 41a through the shoulder loop 15b, the three-point seat belt 41 restrains the backboard panel 20 so as to stably intersect at the front surface thereof. As shown in (A), the impact applied to each belt (seat belt 41, both shoulder belts 1a, lb and crotch belt lc) at the time of a vehicle collision is mitigated by the elastic repulsion of the back panel 20. It is.

Preferably, in the present invention (10), in the present invention (9), the shoulder loop 15b is opened in response to the sinking motion of the protected body as shown in FIG. , Allows the protected body to sink. This can temporarily reduce the impact on the spine and crotch of an infant or the like.

Preferably, in the present invention (11), in the above-mentioned present invention (9) or (10), for example, as shown in FIG. 22 (A), the crotch belt 1c is provided with the crotch fuse 1 according to claim 3. A is provided, and by opening the crotch fuse 1A due to the excessive load applied to the crotch belt 1c, the impact that the protected body receives from the crotch belt 1c is reduced.

When the above-mentioned crotch fuse 1A is opened, the body (waist) of the infant or the like is momentarily accelerated forward, and at the same time, the crotch belt 1c reduces the sinking of the infant or the like, and at the same time, the shoulder belt is used. In 1a and 1b, the head and chest are pulled back, whereby the infant or the like assumes a slightly backward tilted posture.

Also preferably, in the present invention (12), in the present invention (9) to (11), as shown in, for example, FIG. 22 (B), a waist socket 34 according to claim 4 is provided. By opening the waist fuses 34A34B due to the excessive load applied to the waist belt 34, the impact of the protected body from the waist belt 34 is reduced.

When the above hip fuses 34A and 34B are opened, the hips are further accelerated for a moment, and the shoulder belts 1a and 1b simultaneously pull the head and chest of the infant back. . In this way, with the fuses in each stage open, the posture of the infant, etc., is maintained in a backward tilted position that is safer against impact. Preferably, in the present invention (13), in the above-mentioned inventions (9) to (12), as shown in FIG. 23, for example, as shown in FIG. After being accelerated, the object to be protected is safely restrained within the required space and impact strength by the overall structure of the impact shield device 10 (back panel, auxiliary belt, etc.).

According to the present invention (13), the finite impact shield space is effectively used, and while the shock to the protected object is appropriately reduced, the speed of the protected object is gradually reduced, and then the impact is reduced. The method of completely constraining the entire structure of the shield device 10 enables the protected object to be safely constrained (impact shield) with a sufficiently small impact (reaction) as compared with the related art. BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a front perspective view of the seatbelt assisting device according to the embodiment, FIG. 2 is a side view of the seatbelt assisting device according to the embodiment, FIG. 3 is a rear view of the seatbelt assisting device according to the embodiment, and FIG. Is a diagram illustrating the manufacturing method of the seat belt assisting device main body, FIG. 5 is a diagram illustrating the shoulder loop (1), FIG. 6 is a diagram illustrating the shoulder loop (2), and FIG. 7 is a diagram illustrating the crotch belt Fig. 8 illustrates the waist belt, Fig. 9 illustrates the back panel, Fig. 10 illustrates the method of sewing the fuse belt, and Fig. 11 illustrates the method of sewing other parts. Fig. 12, Fig. 12 is a diagram illustrating the shock-mitigating pad according to the embodiment, Fig. 13 is a front perspective view of the state in which the shock-reducing pad is mounted, and Fig. 14 is a state in which the shock-reducing pad is mounted. Fig. 15 is a rear view with the shock-absorbing pad attached, and Fig. 16 is another embodiment. Fig. 17 is an explanatory diagram of a three-point connecting member (1), Fig. 18 is an explanatory diagram of a three-point connecting member (2), and Fig. 19 is a seatbelt. FIG. 1 (1) illustrating the use of the seating aid, FIG. 20 is a diagram (2) illustrating the use of the seatbelt assisting tool, and FIG. 21 is a diagram illustrating the operation of the impact shield according to the embodiment. (1), Figure 22 is a diagram illustrating the operation of the impact shield according to the embodiment (2), FIG. 23 is a diagram illustrating the operation of the impact shield according to the embodiment (3), and FIG. 24 is a diagram illustrating the operation of the impact shield according to the embodiment. (4), FIG. 25 are diagrams describing the prior art (1), and FIG. 26 is a diagram (2) illustrating the prior art. BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, a plurality of embodiments suitable for the present invention will be described in detail with reference to the accompanying drawings. It is to be noted that the same reference numerals indicate the same or corresponding parts throughout the drawings.

FIG. 1 is a front perspective view of a seat belt assisting device (corresponding to an impact shield device) according to the embodiment. Belt 1, which forms the skeletal structure of the seat belt aid, is turned right near the waist side of the back of the main body (left in the figure) around shoulder 1a, near the front abdomen, and left shoulder 1 After turning around b, it is joined (self-sewn, stopped, etc.) to the self near the waist side of the back, and further developed around the front abdomen around the crotch 1 c at the bottom of the main body. And a pair of male and female connecting members 7 and 5 which are detachable at the above-mentioned inverted portion and near the end portion which extends around the crotch and near the front abdomen.

One example of the connecting members 5 and 7 is a one-touch insert / push-in automatic release type. When the male connecting member 7 is pushed into the female connecting member 5, it is connected (locked), and the button of the female connecting member 5 is connected. When the button is pressed, the internal lock is released, and the male connecting member 7 is pushed out to the outside vigorously by the action of the internal panel. The waist belts 34a and 34b are provided for restraining the periphery of the Z chest (torso), and the effective length of the waist belt 34 is adjustable. In addition, the front side of the waist belt 34 is gripped by a grip belt 52 sewn on a belt 1 near the back side of the connecting member 5 to stabilize the upper body of the user together with the shoulder belts 1a and lb. To be restrained.

In addition, a seat belt 41 a deployed from the upper side of the vehicle or the like is gripped inside the shoulder belts 1 a and 1 b to stably restrain the seat belt assisting device 10 to the seat side. It has shoulder loops (belt through holes) 15a and 15b. Preferably, the shoulder loop 15a stably grips a part of the seat belt 41a extending from the right (left side in the figure) of the vehicle, and the shoulder loop 15b is positioned on the left side of the vehicle (see FIG. (Right toward) Used to stably grip a part of the seat belt 41a deployed from above. Further, at each end of the shoulder loops 15a and 15b, loop-shaped shoulder loop dissociation belts 51a and 51b are provided, respectively. By pulling 1b outward by hand, the shoulder loop 15aZ15b is released and the seatbelt 41a (41b) can be easily removed from the seatbelt aid. That is, the operation of removing the seat velvet 41 is the same as that of a normal adult.

Further, a plate-like member (backboard panel) 20 having strong elasticity against bending is embedded in the back of the main body 10, and the backboard panel 20 is attached together with the belts 1 a to 1 c to this sheet. It has the skeletal structure of the belt assisting device. The backboard panel 20 allows the user (infant, etc.) to sit in a safe and free forward posture during normal operation, and also ensures that the user's body does not roll over in the event of a collision with a vehicle. In addition, the belts 41, 1 intersect each other, and the back panel 20 is bent in an arc shape, so that the impact that the user receives from the belts 1a to 1c is primarily reduced.

Further, a crotch fuse 1A is provided near the base of the crotch belt 1c, and waist fuses 34A and 34B are provided near the base of the waist belt 34 at symmetrical positions. When the user's body (lumbar region) is thrown forward due to a vehicle collision, etc., each fuse (sewing thread, etc.) breaks, thereby reducing (absorbing) the impact (overweight) the user receives from each belt. I do.

FIG. 2 is a side view of the seat belt aid according to the embodiment. above As described above, the front side of the waist belt 34 is gripped by the grip belt 52. The grip belt 52 is formed by folding a short belt base and sewing both ends thereof to the shoulder belt 1a or 1b side. Alternatively, the folded one end may be sewn to the shoulder belt 1a and the other may be sewn to the shoulder belt 1b.

The cross-sectional view of the back panel 20 is shown in the inset (a). The back panel (elastic structure) 20 is a plate-like member 24 that is relatively rigid in the middle and has strong elasticity (strong bending stress) against bending. It is sandwiched by plate-like members 22 a and 22 b which are not flame-retardant and have a structure in which they are pressed and fixed by three rivets 26. Back panels 2 0 is rigidly supported around covered by a cover 2 8 rigid flame retardant, and the rear side by the shoulders belts 1 _a, 1 b: Thus, the shoulder belts 1 Even if a strong impact (tension) is applied to a and 1b, the belts 1a and lb do not come off the back panel 20.

FIG. 3 is a rear view of the seat belt assisting device. A crotch fuse 1A is provided near the base of the crotch belt 1c, and waist fuses 34A and 34B are provided near the bases of the waist belts 34a and 34b, respectively. Further, an example of the back panel 20 has a substantially inverted trapezoidal shape, and has a structure in which both left and right sides are supported by shoulder belts 1b and 1a in the reverse direction of the paper surface.

Fig. 4 is a diagram for explaining the manufacturing method of the main part of the seat belt assisting tool. The following description is based on an example of application to a 3-year-old child (weight: about 15 kg). In FIG. 4 (A), a long velvet 1 which forms a skeletal structure of the seat belt assisting tool 10 is prepared. An example dimension (unit: mm) is added to the figure. Belt 1 is made of the same material as or similar to automotive seat belt 4 1. Hereinafter, both ends of Belt 1 may be referred to as points A and B, and the intermediate part thereof as points C, D, and D '. There are portions corresponding to the crotch belt 1c, the shoulder belts 1a and 1b, and the shoulder loop belt 12b for forming the shoulder loop 15b at each point. In addition to this shoulder loop belt 1 2b, a shoulder loop 1 5 A shoulder loop belt 12a for forming a is provided.

In FIG. 4 (B), the belt 1 is folded at the point C to form the respective portions of the double shoulder belts 1a and 1b, the crotch belt 1c, and the shoulder loop belt 12b. In FIG. 4 (C), the point C of the belt 1 is folded back through the belt mounting opening of the female connecting member 5. The shoulder loop belt 12b is folded in the direction of the shoulder belt 1b, and its end is added to form a shoulder loop 15b described later. In addition, one end of the shoulder loop belt 12a is sewn at the connection portion (points D and D ') of the belt 1, and the other end is processed to form the shoulder loop 15a. A crotch fuse 1A is provided near the base of the crotch belt 1c. Furthermore, the tip of the crotch belt 1c is passed (wound) through the mounting opening of the male connecting member 7, and the processing is performed so that the effective length of the crotch belt 1c can be adjusted.

5 and 6 are diagrams (1) and (2) for explaining the shoulder loop, and FIG. 5 shows a state in which the shoulder loop 15b is closed. An example dimension (unit: mm) is shown in the figure. Belt 1 is folded back at point D 'to form shoulder loop belt 1 2 b. Shoulder loop belt 1 2 b is not sewn along shoulder belt 1 b until it is near the front side (chest) of shoulder 1 b. It is deployed here, folded back to the side of the shoulder belt 1b, and further extended along the shoulder belt 1b to the upper side of the back of the main body (upper side of the back panel 20). Further, the shoulder loop belt 12b is now folded back inside the ring, and its tip is extended to the folded portion near the chest of the shoulder loop belt 12b, thus gripping the seat belt 41a. A shoulder loop (annular part) 15b is formed.

Further, the upper half of the annular portion 15b is sewn on the shoulder belt 1b, while the lower half (the tip of the shoulder loop belt 12b) is free. A pair of magic tapes (trade name) 14b are sewn to the outer surface of the lower half and the surface of the shoulder loop belt 12b opposite to the outer surface in the range shown in the drawing. ing. The magic tape 14b is detachably constructed by combining two tapes, hook and pile. Cloth tape. In addition, the shock absorbing pad 42 described later is detachably attached to the outer surface of the lowermost belt of the shoulder loop belt 12 b wound three times (one and a half times). One of the magic tapes 32b is sewn or the like within the range shown. In this way, when the sheet belt assisting device 10 is not used, the Velcro 14b is adhered to the shoulder loop 15b and the shoulder loop belt 12b to keep the same shape as the shoulder belt 1b. Sauce doesn't get in the way.

FIG. 6 shows the shoulder loop 15b opened. When using this sheet belt aid, first grasp the middle part of the shoulder loop belt 12b with your hand, pull it downward, and peel off the Velcro 14b. Then, the shoulder loop 15b is opened, and a large opening space 15b 'is formed between the shoulder loop 1b and the shoulder belt 1b. Pass a pair of seat belts 4 1 a and 4 lb deployed from the top and bottom of the vehicle into the space 15 b ′ (in front of the figure) from above and below, together with the back hook at the tip, and loop the upper seat belt 4 1 a inside this shoulder loop Close the shoulder loop 15b while positioning it on the back of 15b (preferably within 50mm behind the shoulder center line CL) and attach the Velcro 14b.

Returning to FIG. 5, the upper sheet belt 41a is stably gripped by the shoulder loop 15b by the above operation. On the other hand, the lower seat belt 41b is set at a natural position between the back panel 20 and the shoulder loop belt 12b (within a range not exceeding the point D '). Thus, the seat belt 41 can be securely set on the back panel 20 of the seat belt assisting tool 10 by the simple operation described above.

In addition, in such a restrained state, when a vehicle or the like collides, a strong force in the direction of arrow a acts on the gripping portion of the upper seat belt 41a due to the recoil of the infant or the like flying forward (downward). The magic tape 14b is automatically peeled off by this impact. That is, the shoulder loop 15b is released. When the shoulder loop 15b is released, the condition shown in Fig. 6 is reached, It is only necessary to remove the seat belt 41 according to, and the seat belt can be easily removed. The same applies to the shoulder loop 15a.

FIG. 7 is a view for explaining the crotch belt, and FIG. 7 (A) shows a method of manufacturing the crotch fuse 1A. When the crotch belt 1c is folded near the point D of the belt 1 in a direction in which the center line CL 2 thereof is substantially parallel to the center line CL 1 of the back of the main body, the folded portion has an overlapping area of opposing surfaces as shown in the figure. (The area indicated by the halftone dot in the figure) P is formed. The overlapping area P is sewn in a plurality of steps in a direction perpendicular to the center line CL2 by using, for example, a polyester thread (thickness 1 to 6 or the like). The crotch belt 1c after the sewing is unfolded toward the arrow a (front side of the paper) with the uppermost sewing line as a boundary, thus forming the crotch fuse 1A. By setting each sewing line in a direction perpendicular to the center line CL2 (CL1), the break resistance of each stage is maximized. In addition, the break resistance at each stage can instantaneously mitigate the strong impact that the user is receiving from the crotch belt 1c.

In addition, the sewing may be performed in a direction parallel to the center line CL2 due to a sewing machine or the like. Also, the actual sewing does not exceed the range of, for example, 60 mm in the vertical direction of the figure. In this way, even if the crotch fuse 1A is peeled off, the extension of the crotch belt 1c is within 60 mm, and the user's body can be restrained within a safe range. The sewing line at the bottom of the figure is preferably, for example, at least 10 mm away from the folded end of the crotch belt 1c. If it is less than this, the sewing line at that portion may not be completely broken, and the function as a fuse cannot be fully exhibited.

The crotch fuse 1A can be formed by various other methods (riveting, stapling, bonding, combinations thereof, etc.) that dissociate with an appropriate tension (excessive weight) in addition to the sewing described above. Further, the crotch fuse 1A may be provided twice as long as the extension of the crotch belt lc is allowed. If necessary, such a fuse belt is provided on both shoulder belts 1a and lb. Is also good.

FIG. 7B shows a method of treating the end of the crotch belt 1c. After the crotch belt 1c passes through the anchor member 30, it is folded around the mounting bar of the female connecting member 7, and is again wound around the anchor member 30, and then sewn to its folded portion. ing. Therefore, it is possible to adjust the effective length of the crotch-belt 1 _c by shifting the position of the anchor member 3 0. Instead of gripping the waist belt 34 with the grip belt 52, the waist belt 34 may be gripped with a ring of the crotch belt 1c as shown by a dotted line in the figure.

FIG. 8 is a diagram for explaining a waist belt, and FIG. 8 (Α) is a plan view of the belt material 34. An example dimension (unit: mm) is added to the figure. Here, 34 A and 34 B are parts where the waist fuses 34 A and 34 B are formed. FIG. 8 (B) shows a rear perspective view of the waist belt 34. The belt material 34 is treated as a ring as a whole, and lumbar fuses 34A and 34B are provided at symmetrical positions near the center on the back side. The length of the folded portion (sewing portion) of each waist fuse 34 A, 34 B is, for example, 25 mm. Therefore, when the hip fuses 34A and 34B are dissociated together, the total length of the total is within 50 mm, and the user's body can be restrained within a safe range.

The part of the waist belt 34 that extends to the left and right is also referred to as the waist belt 34b, 34a. The end of the waist belt 34b is wound around one attachment portion of the buckle 38 and sewn or the like at the folded portion. Also, the end of the waist belt 34a passes through the anchor member 36 once, is folded back at the other mounting portion of the buckle 38, and is again wound around the anchor member 36, and then folded by itself. It is sewn on the return part. Thus, the effective length of the waist belt 34 can be adjusted. FIG. 8 (C) shows a front view of a portion of the waist belt 34 from the back notch 38 to the anchor member 36.

FIG. 9 is a view for explaining the back panel, FIG. 9 (A) is a front view thereof, and FIG. 8 (B) is a partial side sectional view thereof. The example dimensions (unit: mm) are added to the figure. You. The intermediate plate-shaped member 24 is made of a plastic material such as ABS resin, and the plate members 22a and 22b before and after the plate material are made of a plastic material such as polypropylene resin. Three points are riveted with aluminum. Using a 2 mm ABS resin plate 24 with the same performance as a steel plate as the core material, a 2 mm elastic and friction-resistant PP resin plate 22 The three plastic plates stacked on the front and back and fastened with aluminum rivets combine the strong bending elasticity and flexibility of a panel.

FIG. 10 is a diagram for explaining a method of sewing the fuse belt portion, and FIG. 10A shows a sewing pattern of an example of the crotch fuse. Assuming that the total length of the folded portion of the crotch belt lc is 6 Omm, four sewing lines are provided at equal intervals in the remaining portion excluding the range of the length L (for example, 1 Omm) from the lower end of the folded portion. The sewing thread is made of tough polyester or the like, for example, thicker Nos. 1-6. One example of a sewing pattern can be sewn with a single stroke using an automatic sewing machine. In addition, the number of steps and intervals of the sewing lines can be variously selected, and the intervals of the sewing lines are not necessarily equal.

Figure 10 (B) shows an example of the sewing pattern of the waist fuses 34A and 34B. Assuming that the total length of each folded portion of the waist belt 34 is 25 mm, four sewing lines are equally spaced from the lower end of this folded portion to the remaining portion excluding the range of length L (for example, 10 mm). Is provided. As the sewing thread, for example, a polyester-based thickness 1 to 6 or the like is used. The number of stitches, the interval, the perforation pitch, etc. can be selected in various other ways, and the interval between the sewing lines is not necessarily equal.

Fig. 11 is a diagram explaining the sewing method of the other parts. Fig. 11 (A) shows the sewing pattern of the part attached to the buckle, anchor, etc. of the belt. For example, at the end of the folded portion of the waist belt 34, sewing is performed substantially to the full width of the belt so that this portion is not peeled off. On the other hand, the buckle is close to 38 mag On the other side, in this example, the width of the belt to be wound around this part is narrowed due to the small size of the inner belt mounting bracket, etc., and the width is somewhat smaller than the original width of the belt 34. This part is sewn in multiple steps and firmly in width. The ₀ is a sewing thread to use, for example, of polyester thickness sixth etc.

Fig. 11 (B) shows an example of a sewing pattern at points D and D 'of belt 1, where a plurality of belts overlap. In other words, the shoulder belt 1b extends to the side of the crotch belt 1c behind the figure. Further, a part of the shoulder belt 1a overlaps thereover, and the shoulder belt 1a is folded back at a point D to become a shoulder loop belt 12b, which is developed in the upper right direction in the figure. Further, another shoulder loop belt 1 2a (not shown) is stacked in the same direction as the shoulder belt 1a. Further, a waist belt 34 is placed on these intersections. Preferably, the waist belt 34 is overlapped with an intermediate part where it is sandwiched by other belts. The figure shows the waist belt 34 folded from the shoulder belt 1a to the shoulder loop belt 12b. This shows a state in which it is sandwiched between the two parts. Alternatively, it may be sandwiched between the shoulder belt 1b and the shoulder belt 1a. In addition, strong sewing strength can be obtained by crossing this part vertically and horizontally, and by using braces, it is effective in preventing the belt material from tearing vertically. By the way, in the example in the figure, sewing is performed in zigzag in both vertical and horizontal directions. As the sewing thread, for example, use a polyester series number 1-6. For general sewing parts other than the above, for example, a sewing thread of a polyester type with a thickness of 8, etc. can be used.

The detailed configuration of the seatbelt assist device 10 has been described above, but the following description supplements important safety-related matters. Regarding the back panel 20, the three-point riveter stops when the ABS resin (2 mm) plate 24 is used as the core material and the PP resin (2 mm) plates 22a and 22b are superimposed on the front and back. This is an important security issue. The length of the shoulder loop 15b shown in Fig. 5 is about 120 mm, of which 100 Omm (impact impact dissociation dimension and For example, use strong adhesive Velcro 14b. For the sewing thread of the magic tape 14b, for example, a thickness of No. 30, etc. is used. Furthermore, when sewing the upper half of the shoulder loop to the shoulder belt 1b, double stitching at both ends in the longitudinal direction (see Figs. 1 and 5) is important.

The fuse mechanism (crotch fuse 1 mm, waist fuses 34 mm, 34 mm) according to the present invention is an important element for safety. Using twisted yarn, the sewing error of the specified pattern is limited to 5 mm soil. In addition, the use error of the fuse belt is limited to ± 5 mm, and 5 stitch reverse stitching is set for the terminal processing of the sewing thread during computer sewing. In addition, the sewing strength will change by adjusting the upper and lower threads of the computer sewing machine. In addition, since the strength of the entire belt is maintained by the accuracy of each part of the safety safety points (fuse mechanism, etc.), the error between the start and the end of sewing is also set with a limit of 5 mm soil. In addition, use sewing thread of thickness 8 etc. for bag sewing of backboard panel 20 and use the specified twisted thread for sewing thread of thickness 1 for combi stitcher. Sewing of the security part (fuse mechanism, etc.) shall be the designated pattern.

FIG. 12 is a view for explaining the shock absorbing pad according to the embodiment. FIG. 12 (A) is a front view and FIG. 12 (B) is a side view. An example dimension (unit: mm) is added to the figure. The shock-absorbing pad 42 is provided between the user and the seatbelt aid 10 to reduce the impact and friction that the user receives from the auxiliary belt, and is used to reduce the number of pad components connected. Has become. 71 1 is a cover pad that covers the front of the connecting members 5 and 7, 72 is a belly pad that protects the inside of the connecting members 5 and 7 (the chest Z abdomen of the user), 71A and 71B. Are ears for fixing the cover sod 71 to the belly pad 72, and both sides are sewn with Velcro. In addition, 73 a and 73 b extend along the shoulder belt 1 a and lb, and shoulder pads protect the user's back, both shoulders and chest, and 74 is a waist belt 34 a and 34. b and crotch belt 1 c. It is a torso pad that protects the user's waist, torso and crotch.

The inside of each pad component is made of elastic material such as rubber or sponge, the periphery of which is covered with a non-combustible cloth, etc., and the periphery is subjected to piping processing. Furthermore, each pad component is connected in a flexible manner with a short piece of cloth or the like to form a single shock absorbing pad 42 as a whole. Furthermore, Velcro (male side) 32a and 32b are sewn on the back of the shoulder pads 73a and 73b, etc., and these are attached to the Velcro (female side) in Fig. 1.

The shock absorbing pad 42 is attached to the seat belt assisting tool 10 by bonding to 32 a and 32 b respectively.

Further, a torso pad cover 75 is provided outside the torso pad 74, so that the waist belts 34a, 34b and the crotch belt 1c, which extend in three directions, are stabilized to the torso pad 74. Position. That is, the body pad cover 75 is provided with cutouts 75a, 75b, and 75c.

4 B and crotch fuse 1 A can be pulled out. Further, a pair of magic tapes 76a to 76c are provided on the back surface of the body pad 74 and on the surface of the body pad cover 75 for bonding the two. The magic tapes 76a to 76c have a length larger than the waist belts 34a and 34b and the crotch belt lc, and have a mode in which each belt can be sandwiched and adhered to a central portion thereof. You. The body pad 74 and the body pad cover 75 may be integrated in advance and sewn or the like instead of the method of bonding with the magic tape described above.

FIG. 13 is a front perspective view showing a state in which the shock absorbing pad is mounted, FIG. 14 is a side view thereof, and FIG. 15 is a rear view thereof. In Fig. 13, the shock absorbing pad 42 is set between each part of the body of the user and the shoulder belts 1a and 1b, the crotch belt 1c, and the waist belt 34a and 34b. To protect the vehicle from impact and friction from the belt.

By the way, when the user escapes from the emergency seat, As with adults, existing seat belts (buckles, etc.) are 4 1. That is, the infant or the like is basically released from the seat belt 41 while wearing the seat belt aid and escapes to the outside. At this time, if the connecting members (buckles) 5 and 7 of the seat belt assisting device are visible in addition to the buckle of the seat belt 41 which is the original operation target, it is easy to mistake the operation target. Therefore, the cover pad 71 also has a function of making the connecting members ₅ , 7 invisible from the outside.

In FIG. 14, the whole of the shock absorbing pad 42 is adhered to the inside of the shoulder belt 1 b (la) with a magic tape 32b (32a). At the crotch part, the crotch belt 1c is sandwiched by the magic tape 36c, and at the waist part, the waist belts 34a, 34b are sandwiched by the magic tapes 76a, 76b. In this state, the belly pad 72 is interposed between the connecting members 5 and 7 to protect the user's chest Z belly from the impact of the connecting members 5 and 7. The cover pad 71 on the front surface covers the connecting members 5 and 7, and the lower end is bonded to the belly pad 72 by ears 71B (71A).

In FIG. 15, the waist belts 34 a and 34 b are stably gripped by the magic tapes 76 a and 76 b, and in this state, the notches 75 a to In the case of 75c, the hip fuses 34A and 34B and the crotch fuse 1A are exposed to the outside. Therefore, the user can easily confirm from the outside whether or not the fuses 34A, 34B, 1A have been used (disconnected). Although the above description has been given of the case where the seat belt assisting device main body 10 and the shock absorbing pad 42 are of a separate type, they may be integrally formed from the beginning.

FIG. 16 is a view for explaining a seatbelt assisting device according to another embodiment, and shows a case where a three-point connecting member (buckle) is provided on the front abdomen of the seatbelt assisting device. FIG. 16 (A) is a front perspective view thereof. The waist belts 34a and 34b are detachable at the front abdomen as shown in the figure. Is divided into two parts. Therefore, the infant or the like can easily use the seat belt assist device 10 outside the vehicle or even in a state where the seat belt assist device 10 is already (fixedly) restrained to the seat side by the vehicle seat belt 41. Attached to Z Detachable.

The connecting members 5 and 7 may be the same as the one-point type described in FIG. Preferably, commercially available connection members 5, 7 which have already been proven to be reliable are used. In the present embodiment, connecting members (brackets) 80 A and 8 OB having a simple and robust structure are provided at the distal ends of the waist belts 34 a and 34 b, and the male connecting members 7 are provided in these holes. By passing the latching convex plate 7a, the whole of the connecting members 7, 8OA and 8OB can be latched and Z-unlocked to the female connecting member 5 at once. The whole of these three connecting members 7, 80A, 80B is also referred to as a three-point buckle in the sense that they can be detachably connected to the female connecting member 5. In terms of the processing method of the waist belt 34, the end of the waist belt 34a once passes through the anchor member 36a, is then folded back at the belt mounting portion of the connecting member 80A, and is again returned to the anchor member 3a. After being wound around 6a, it is sewn on its own folded part. Similarly, the end of the waist belt 34b once passes through the anchor member 36b, is then folded back at the belt mounting portion of the connecting member 80B, and is again wound around the anchor member 36b. After it is turned, it is sewn to its folded part. Thereby, the effective lengths of the waist belts 34a and 34b can be adjusted so that they preferably have the same length. Belt fuses 34A and 34B are provided at the roots of the waist belts 34a34b. Other configurations may be the same as those described with reference to FIG. In addition, the impact mitigation pad 42 described with reference to FIG. 12 can be attached to the seat belt assisting tool 10.

FIG. 16 (B) shows a perspective view of the connecting members 8 OA and 8 OB. 8 1 a and 8 1 b are connecting portions where the surfaces are overlapped at the time of connection, 8 2 a and 8 2 b are holes through which the convex plate 7 a for latching of the male connecting member 7 passes, 8 3 a and 8 3 b is the waist It is a belt attachment part (part of anchor) for winding the notches 34a and 34b.

FIGS. 17 and 18 are explanatory diagrams (1) and (2) of a three-point connecting member (buckle). FIGS. 17 (A) and (B) show examples of connecting members 80B and 8OA. The dimensions (in mm) are shown. Also, in FIGS. 17 (A) and (B), each figure (a) is a plan view, and figure (b) is a side view seen from below. For example, a metal plate (hardened steel plate, etc.) with a thickness of 1.2 to 1.5 mm (1.5 mm in this example) is used as the material of the connecting member 80, and the surface of the final product is chrome-finished. It has become. The shape of the connecting members 80 B and 8 OA is basically symmetrical as shown in the figure, but the height (23 mm) of the connecting portion 8 la is equal to the height (21, 5) of the connecting portion 8 lb. mm). This takes into account the fact that the connecting member 80A of FIG. 17 (B) one (a) is superimposed on the rear side of the connecting member 80B of FIG. 17 (A) -1 (a). Things. Preferably, the height of the connecting portions 81a and 81b is set to be equal to or less than the height of the connecting members 5 and 7, so that no impact is exerted on an infant or the like.

FIG. 17 shows how the waist belt 34 is wound. In Fig. 17 (A), pass the end of the waist belt 34b from the back side of the belt mounting part 83b in the order of holes (1), (2), and (3), turn it back, and pull it out again through hole (2). Due to this winding structure, the effective length (set length) of the waist belt 34b is securely maintained, and the infant or the like at the time of impact is securely restrained. The same applies to the waist belt 34a in FIG. 17 (B).

Fig. 18 shows the usage of the three-point buckle, Fig. 18 (A) is a plan view of the three-point buckle, and Fig. Is (B) is the connecting member viewed from below 80 A, 80 B FIG. When attaching the seatbelt aid, the connecting members 80A and 80B are superimposed on the lower side of the female connecting member 5, and the male connecting member 7 is inserted into these holes 82a and 82b. Through the latching convex plate 7a of Push at once. Alternatively, with the connecting members 80A and 80B fitted in the latching convex plate 7a in advance, they are pushed into the female connecting member 5 at a stretch. This opens the three-point buckle. When removing the seat belt assisting tool, pressing the PRESS button of the connecting member 5 releases the connecting member 7 due to the spring force of the connecting member 5 or the weight of the connecting member 7, and all belts 1c, 34a , 3 4 b are released at once. Thus, according to the present embodiment, an extremely simple (simple) and sturdy structure can reliably and safely restrain the infant or the like from being released.

FIGS. 19 and 20 are diagrams (1) and (2) for explaining the usage of the seatbelt assisting tool. FIG. 19 shows the usage in a normal state. In Fig. 19 (A), the user (infant, etc.) is wearing a seatbelt aid and is sitting in the front left seat of the car. At this time, the three-point upper seat belt 41a passes through the inside of the shoulder loop 15b on the back of the body, and the lower seat belt 41b is the back panel 20 and the shoulder loop belt 12b. It extends to the front of the seat (Figure) through the gap between the two, and the connecting member (buckle) 43 at the tip of the seat is latched to the connecting member (buckle) 45 extending from the floor of the vehicle. At this time, preferably, both the seat belts 41a and 41b are passed between the back panel 20 and the shoulder loop velvet 12a.

Fig. 19 (B) shows the positional relationship of the main belts. The seat belts 41a and 41b are entangled with the shoulder belts 1a and 1b extending to the back across the back panel 20 in a fixed posture. 1a, 41b temporarily restrains the backboard panel 20 and the belts 1a to 1c, which are deployed on the back, secondary the user's body to the shoulders and crotch at three points. It is a relation that is bound to.

At this time, the upper seat belt 41 a of the automobile is obliquely crossing the upper half of the back panel 20 by being gripped by the shoulder loop 15 b, and the lower seat belt 41 b is shouldered. Inside the loop belt 1 2 b The lower half of the panel 20 crosses laterally. On the other hand, the skeletal belts 1a to lc support the back side of the backboard panel 20 forward, and each belt 1a to 1c restrains the user's body in a safe forward posture. Under such restraint, the infant and the like can change their posture to some extent freely, and even if they change their posture, this safe restrained posture is stably maintained.

Fig. 20 shows one state of the seatbelt assist device in the event of a vehicle collision. In Fig. 20 (Α), when a vehicle or the like collides, the infant is thrown forward by its own inertia, Strong forward forces F a to F c as shown in FIG. 20 (B) act on the shoulder belts 1 a and 1 b and the crotch velvet 1 c that restrain the shoulder belt. At this time, the back panel 20 is instantaneously actuated by the locking action of the seat belt 41 (or a method in which the seat belt 41 is extended and opened in advance by using an anchor, etc.). As a result, the backboard panel 20 is largely curved as shown in the figure, and the bending elasticity primarily absorbs (absorbs) the impact that the infant or the like receives from the auxiliary belts 1a to 1c. . Thereafter, the crotch fuse 1A and the hip fuses 34A, 34B are sequentially opened in accordance with the movement of the infant or the like, and the infant or the like is thereby assisted by the shock absorbing action of each stage. While reducing the impact received from the lc, gradually reduce the speed of the infant, etc., and finally restrain the infant safely with a smaller impact than before (impact shock). Hereinafter, the process will be described in detail.

FIGS. 21 to 24 are operation explanatory diagrams (1) to (4) of the impact shield according to the embodiment, and show a typical impact shield operation in a time series in a vehicle collision. ing. FIG. 21 (A) shows the rebound action of the back panel 20. In the event of a vehicle collision, the head and chest of an infant start accelerating due to inertia, which causes the seat belt 41 to hit the back panel 20 and lock the seat belt 41. Seat belt 4 1 force; When locked, impact is applied to backboard panel 20 from auxiliary velvets 1 a to 1 c, but momentary impact is alleviated by the bending property of backboard panel 20, and Spring supported by panel 20 Due to the restraint of the auxiliary belts 1a to 1c, the first deceleration occurs for infants and the like.

Figure 21 (B) shows the opening action of the shoulder loop 15b.For example, at the time of a collision at 50 km / h, the force of the child's waist to sink suddenly downwards is exerted on the center of gravity B of the waist. Working force In response, the shoulder loop 15b is opened, allowing the child to sink. This also reduces momentary impacts on the spine of infants, etc., and also reduces impact (overload) on the crotch belt 1c. Thereafter, the second deceleration by the auxiliary belt 1 occurs for infants.

Fig. 22 (A) shows the opening action of the crotch fuse 1A.When the shoulder loop 15b is opened and the sinking of an infant is accelerated, the crotch belt 1c is overloaded, Crotch fuse 1 A is opened. When the crotch fuse 1A is opened, the waist is momentarily accelerated forward, and at the same time, the auxiliary belt 1 pulls the head and chest back while reducing the sinking of the infant. After that, the third time deceleration occurs for the infant etc. by the auxiliary belts 1 and 34.

Fig. 22 (B) shows the opening action of the waist fuses 34A and 34B. When the crotch fuse 1A is opened, the body (waist) of the infant or the like is momentarily accelerated forward, As a result, the lumbar belt is overloaded, and the lumbar fuses 34A and 34B are simultaneously opened. When the waist fuses 34A and 34B are opened, the waist is further accelerated for a moment, and at the same time, the auxiliary belts l a and l b pull back the head and chest of the infant or the like backward. In this way, together with the opening of the fuses at each stage, the posture of the infant, etc., is guided to a rearward tilt position that is safer against impact.

Fig. 23 shows the rebound action of the overall structural belt. When the waist fuses 34A and 34B are released, the hips are further accelerated forward for a moment. The body of the wrapped infant or the like is completely restrained by the stretching force of the overall structural belt (sheet belt 41, auxiliary belts 1, 34). At this time, the final deceleration (reaction) is applied to the infant, etc., but the initial speed at that time is sufficiently small due to the multiple stages of deceleration and the impact mitigation action. Therefore, in this final stage, the infant can be completely restrained with a sufficiently small recoil. As described above, typically, the five steps (① to ⑤) of the impact mitigation action described above protect children and other children safely from impact.

Figure 23 shows the permissible values of the impact shield and the measured values when the seatbelt aid according to the present embodiment was tested using a dummy. here,

Movement amount of the center of gravity of the head ≤ 4 7 1 mm (allowable value 600 mm)

Knee joint displacement ≤ 5 7 8 mm (tolerance ≤ 70 O mm)

The synthetic head acceleration ≤ 62 0 m / s ² (allowable value ≤ 785 m / s ² ) The synthetic chest acceleration ≤ 47 2 m / s ² (allowable value ≤ 588 m / s ² ).

Fig. 24 (A) shows the pull-back action of an infant or the like by the overall structural belt.The infant or the like jumped forward is returned to the original position by the soft reaction received from the overall structural belt after stopping. It is. FIG. 23 shows a locus h of the center of gravity H of the head and a locus b of the center of gravity B of the waist. According to the present embodiment, both shoulder belts 1a, 1b and crotch belt 1c are connected by one belt material 1, and waist belt 34 connects waist center of gravity B. Because it is provided so as to surround it, the force to pull back the body of the infant etc. works evenly, so the body of the infant etc. is correctly pulled back to the seat side and returned to the original position (preferably the original sitting posture) There is a tendency.

Figure 24 (B) shows the relationship between the time at the time of a vehicle collision and the speed and acceleration. As in the case of Fig. 26 above, the car that collided at the timing of t0 receives a large negative acceleration A and stops at the timing of t7. On the other hand, a relatively large positive acceleration a is applied to an infant or the like in a vehicle due to inertia. According to the present invention, a plurality of stages of deceleration and deceleration mitigation (impact mitigation) are appropriately performed from the beginning of a collision. The initial speed at the time of the final restraint by the whole structure belt is sufficiently reduced, so that the child etc. Can be restrained (impact threshold).

The shoulder loop 15b is automatically dissociated at the stage of impact, but if it is not automatically dissociated, the shoulder loop dissociation belt (loop) can be easily disassembled by pulling 5 lbs outward by hand. it can. The same applies to shoulder loop 15a.

The attachment and detachment of the seat belt 41 as a safety device is already a generalized operation, and by linking with the disengagement operation of the shoulder loop 15, the seat belt 41 can be easily attached and detached. Is possible. In addition, since the attachment and detachment of the seatbelt assistive device can be installed outside the vehicle compared to the conventional child restraint system, there is no need to operate in a narrow space inside the vehicle, and external safety (wearing) It is easy to check the status and use of the belt fuse (unused, etc.). As described above, the seat belt assisting device according to the present embodiment has many conveniences in terms of ease of wearing, and the ease of wearing in daily life also increases the safety of escape in an emergency. Is also to ensure.

In each of the above embodiments, a specific example of a seatbelt aid for a young person (three-year-old child) has been described. It goes without saying that it can be applied.

In the above embodiments, specific numerical examples have been described. However, it is clear that the present invention is not limited to these numerical examples.

In each of the above embodiments, the female connecting member 5 is provided on the shoulder belts 1a and 1b and the male connecting member 7 is provided on the crotch belt 1c, but these may be provided in reverse.

In each of the above embodiments, an example of a typical shock mitigation sequence in the worst case has been described, but the present invention is not limited to this. In practice, various other shock mitigation sequences may occur depending on the collision state (speed, direction, etc.) of the vehicle, etc. and the initial posture of the infant at the time of the collision, but in any case, one or more shock mitigation sequences When the action is properly performed, the child can be safely impacted. Can shield.

In addition, although a plurality of embodiments suitable for the present invention have been described, it goes without saying that various changes in the shape, structure, material, and combinations thereof can be made without departing from the spirit of the present invention. There is no.

As described above, the impact shield device (sheet belt assisting device) of the present invention is compact, low-cost and easy to carry, and is used in combination with an existing three-point seat belt to provide a multi-stage impact mitigation effect. The places that can safely protect infants from accidents and thus contribute to traffic safety are extremely large.

Claims

The scope of the claims

1. In an impact shield device that shields the user's body from impact in the event of a collision in combination with a three-point seat belt such as a vehicle, the impact shield device extends from the vicinity of both shoulders δ on the back of the main body to the waist and near the bending direction. A backboard panel having elasticity; a three-point auxiliary belt extending from the back of the backboard panel around the shoulders and crotch to the vicinity of the front abdomen; a shoulder belt and a crotch belt of the auxiliary belt; A connecting member for detachably connecting the seat belt near the abdomen, and a shoulder provided on the inside of the shoulder belt near the shoulder to releasably hold a seat belt deployed from above the vehicle or the like by an impact received from the seat belt 0. An impact shield device comprising a loop.

2. An impact shielding device that shields the user's body from the impact at the time of a collision in combination with a three-point seat belt of a vehicle, etc., is deployed near the waist rather than near both shoulders on the back of the main body, and A back panel 5 having elasticity in a bending direction, a three-point auxiliary belt extending from the back of the back panel to both the shoulders and the crotch and extending near the front abdomen, and a double shoulder belt of the auxiliary belt A pair of male and female connecting members for detachably connecting between the body and the crotch belt near the abdomen, a male connecting member having a convex plate, a female connecting member into which the convex plate is inserted, and a main body. A waist belt which extends to the abdomen by turning left and right from the vicinity of the waist side of the back, and having a connection fitting having holes fitted on the convex plates at both end portions thereof. Impact shield device.

3. The impact shield device according to claim 1, wherein the crotch belt is provided with a crotch fuse that is dissociated due to an excessive load in the longitudinal direction to extend the effective length of the crotch belt.

54. A waist belt that extends to the abdomen by turning to the left and right from the waist side near the back of the main body, and has a waist fuse that dissociates due to its longitudinal load and extends the effective length of the waist belt Claims 1 to 3 characterized by comprising: The impact shielding device according to any one of the above.

5. The shoulder loop forms a half-duplex ring by rotating one end of the belt element that extends along the shoulder belt one and a half turns in the direction opposite to the shoulder belt, and forms the upper half of the single side. The impact shield device according to claim 1, wherein the impact shield device is fixed to the inside of the shoulder belt, and the lower half of the double side is detachably adhered to each other with a cloth tape.

6. The impact shield device according to claim 5, wherein the open end of the shoulder loop is configured to be able to be pulled out to the outside by manual operation.

7. A shock-absorbing pad having a core of cushioning elastic foam resin or the like as a core material is provided inside each of the back panel, the both shoulder belt, the crotch belt and the connecting member. The impact shield device according to 1 or 2.

8. A plurality of auxiliary belts deployed from the back side of the back panel to an impact shield device where the front of the back panel is primarily bound by a three-point seat belt of a vehicle, etc. The method is an impact shielding method in which an object to be protected is secondarily constrained by the method, wherein one or more of the auxiliary belts are dissociated due to an excessive load in the longitudinal direction and the effective length of the belt is reduced. The fuse mechanism is extended to extend the load, and the fuse mechanism, which has been overloaded by the movement of the protected object in the event of a vehicle collision, is sequentially disengaged to reduce the impact of the protected object from the auxiliary belt. An impact shield method characterized by stepwise relaxation.

0 9. The impact shield device according to claim 1, which is primarily restrained by a three-point seat belt of a vehicle or the like, is an impact shield method for secondarily restraining an object to be protected, and is a three-point type. By passing the upper belt of the seat belt through the shoulder loop, the three-point seat belt restrains the back panel so that it stably intersects the back panel at the front surface, and the impact applied to each belt at the time of a vehicle collision is reflected. Plate 5 An impact shielding method characterized by being relieved by the repulsive action of the panel.

10. Open the shoulder loop in response to the sinking movement of the 10. The impact shield method according to claim 9, wherein a sinking motion is allowed.

11. The crotch belt is provided with the crotch fuse according to claim 3, and by opening the crotch fuse due to the excessive load applied to the crotch belt, the impact that the protected body receives from the crotch belt is reduced. The method of claim 9 or 10, wherein:

12. The waist belt according to claim 4, wherein the waist fuse is opened due to the excess weight applied to the waist belt, thereby reducing the impact of the protected body from the waist belt. The impact shielding method according to any one of claims 9 to 11, wherein the impact shielding method comprises:

13. The protected body after being decelerated to an appropriate size with the impact mitigation action of each of the above steps is restrained within the required space and impact strength by the overall structure of the impact shield device. The impact shielding method according to any one of claims 9 to 12.