Automobile back row front face safety air bag

Abstract

The utility model discloses an automobile back row front safety air bag which is installed in a seat backrest of a front row seat and comprises an air bag and a gas generator, the gas generator inflates gas into the air bag when collision occurs, so that the air bag rapidly breaks through the surface layer of the front row seat and then is unfolded towards a back row passenger; and a sunken part for accommodating the head of a rear-row passenger is formed in the position, in contact with the head of the rear-row passenger after the air bag is unfolded. According to the utility model, the sunken part for accommodating the head of the rear-row passenger is formed at the position where the unfolded air bag is in contact with the head of the rear-row passenger, and the sunken part can well catch the head of the rear-row passenger, so that the head of the rear-row passenger is prevented from sliding out of a protection range.

Description

Technical Field

[0001] This utility model relates to the field of automotive airbag technology, and in particular to a rear frontal airbag for automobiles. Background Technology

[0002] Few existing cars are equipped with rear front airbags. In a frontal collision, front occupants are protected by seat belts and airbags. While rear occupants are not directly impacted, they experience initial inertia during a sudden stop and may collide with the front seats and armrest. During this collision, if rear occupants are wearing seat belts, they will experience pressure on their chest and abdomen, as well as the risk of the seat belt strangling their neck. The seat belt exerts significant chest pressure on rear occupants, and their heads, due to the initial inertia of the car and the restraint of the seat belt, will experience head thrown. If rear occupants are not wearing seat belts, their legs are obstructed by the front seats, causing their thighs to bend upwards towards their chest and abdomen, resulting in pressure on the chest and abdomen. Subsequently, their heads collide with the front headrests, and their necks suffer significant twisting.

[0003] To protect the safety of rear-seat occupants, it is essential to equip vehicles with rear-seat frontal airbags. Examples include Chinese invention application CN104108364A, which discloses an airbag system for protecting rear-seat occupants in a frontal collision; Chinese utility model patent CN220447834U, which discloses a car seat backrest airbag assembly; and German invention application DE19916848A1, which discloses a vehicle safety device with at least one rear-seat airbag.

[0004] However, the rear airbags mentioned above do not provide adequate support for the heads of rear passengers after deployment, causing their heads to slide out of the protection area, and their deployment stability is still not ideal.

[0005] Therefore, through beneficial exploration and research, the applicant has found a solution to the above problems, and the technical solution to be introduced below is the result of this research. Utility Model Content

[0006] The technical problem to be solved by this utility model is to provide a rear frontal airbag for automobiles that can effectively support the head of rear passengers and improve deployment stability, in order to overcome the shortcomings of the existing technology.

[0007] The technical problem to be solved by this utility model can be achieved by the following technical solution:

[0008] A rear frontal safety airbag for automobiles is installed in the backrest of the front seat and includes an airbag and a gas generator. When a collision occurs, the gas generator inflates the airbag with gas, causing the airbag to rapidly penetrate the surface of the front seat and deploy towards the rear occupants.

[0009] The airbag has a recessed portion at the point where it contacts the head of the rear passenger after it is deployed, which is used to accommodate the head of the rear passenger.

[0010] In a preferred embodiment of this utility model, the air bag has a structure that is larger at the top and smaller at the bottom, and the gas generator is disposed inside the lower end of the air bag.

[0011] In a preferred embodiment of the present invention, the air bag is formed by sewing the front panel and the back panel together along the periphery.

[0012] In a preferred embodiment of the present invention, the lower part of the air bag is formed with a through hole for reducing the internal volume.

[0013] In a preferred embodiment of the present invention, the top of the air bag is provided with at least one exhaust hole.

[0014] In a preferred embodiment of the present invention, the upper part of the air bag is provided with a transverse pull strap for stabilizing the air bag, preventing shaking, and controlling the unfolded shape of the air bag.

[0015] In a preferred embodiment of this utility model, the air bag is fixedly connected to the frame of the front seat by several fixing straps.

[0016] Due to the adoption of the above technical solution, the beneficial effects of this utility model are as follows:

[0017] 1. This utility model has a recessed part formed at the position where the airbag contacts the head of the rear passenger after it is deployed, which can effectively hold the head of the rear passenger and prevent the head of the rear passenger from slipping out of the protection range.

[0018] 2. The airbag of this utility model adopts a design structure that is larger at the top and smaller at the bottom. Its upper part can fully contact the head and chest of the rear passenger, while its lower part can quickly deliver the gas generated by the gas generator to the upper part of the airbag, so that the upper part of the airbag can quickly unfold. At the same time, the lower part of the airbag has a through hole, which can reduce the internal volume and facilitate the rapid filling of the airbag with gas, making the airbag unfold even faster.

[0019] 3. The top of this utility model is provided with an exhaust hole, which can discharge the gas in the air bag and reduce the impact stiffness on the rear passengers.

[0020] 4. The upper part of the air bag of this utility model is provided with a transverse pull strap, which can not only stabilize the air bag and prevent the air bag from shaking when it is deployed, but also control the deployed shape of the air bag.

[0021] 5. The airbag of this utility model is fixed to the frame of the front seat by several fixing straps, which ensures the stability of the airbag when it is deployed. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the present invention installed inside the backrest of the front seat and in an unfolded state.

[0024] Figure 2 This is a schematic diagram of the present invention installed inside the backrest of the front seat and in an unfolded state.

[0025] Figure 3 This is a schematic diagram showing the assembly of the utility model with the frame of the front seat after it is unfolded.

[0026] Figure 4 This is a three-dimensional structural diagram of the present invention after it has been unfolded.

[0027] Figure 5 This is a front view of the unfolded version of this utility model.

[0028] Figure 6 This is a rear view of the unfolded version of this utility model.

[0029] Figure 7 This is a side view of the utility model after it has been unfolded.

[0030] Figure 8 This is a longitudinal cross-sectional view of the present invention after it has been unfolded. Detailed Implementation

[0031] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the following description, in conjunction with specific illustrations, further elaborates on this utility model.

[0032] See Figures 1 to 8The figure shows a rear frontal airbag for a car, which is installed in the backrest 11 of the front seat 10. It includes an airbag 100 and a gas generator 200. When a collision occurs, the gas generator 200 inflates the airbag 100 with gas, causing the airbag 100 to quickly break through the surface of the front seat 10 and deploy towards the rear occupants 20.

[0033] The airbag 100 has a top-heavy, bottom-light design, with the gas generator 200 located inside the lower part of the airbag 100. This design allows the upper part of the airbag 100 to fully contact the head and chest of the rear passenger 20, while the lower part allows for rapid delivery of gas generated by the gas generator 200 to the upper part of the airbag 100, enabling rapid deployment. Simultaneously, the lower part of the airbag 100 has a through-hole 110 to reduce internal volume, effectively minimizing the internal volume of the lower gas compartment and facilitating rapid filling of the airbag, resulting in even faster deployment.

[0034] The airbag 100 has a recess 120 at the position where it contacts the head 21 of the rear passenger after it is deployed. This recess 120 can hold the head 21 of the rear passenger well and prevent the head 21 of the rear passenger from sliding out of the protection range.

[0035] The air bag 100 is made by sewing the front panel 101 and the back panel 102 together along the perimeter. The sewing method is simple and helps to improve production efficiency.

[0036] The airbag 100 has at least one vent 130 at its top, through which gas can be discharged from the airbag 100, reducing the impact stiffness on the rear occupants. In this embodiment, there are two vents 130, which are respectively arranged on the left and right sides of the top of the airbag 100, thus facilitating uniform gas discharge.

[0037] The upper part of the air bag 100 is provided with a transverse pull strap 140 for stabilizing the air bag, preventing shaking, and controlling the unfolding shape of the air bag. One end of the transverse pull strap 140 is sewn to the inner side of the front panel 101, and the other end is sewn to the inner side of the back panel 102. This not only stabilizes the air bag and prevents it from shaking when unfolded, but also controls the unfolding shape of the air bag.

[0038] The airbag 100 is fixedly connected to the frame 12 of the front seat 10 by several fixing straps. Specifically, there are four fixing straps: upper left fixing strap 300a, upper right fixing strap 300b, lower left fixing strap 300c, and lower right fixing strap 300d. One end of the upper left fixing strap 300a and the upper right fixing strap 300b is connected to the left and right sides of the middle part of the airbag 100, and the other end is fixedly connected to the upper left and right sides of the frame 12 of the front seat 10. One end of the lower left fixing strap 300c and the lower right fixing strap 300d is connected to the lower left and right sides of the airbag 100, and the other end is fixedly connected to the lower left and right sides of the frame of the front seat 10, ensuring the stability of the airbag deployment.

[0039] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A rear-seat frontal safety airbag for automobiles, installed within the backrest of the front seat, comprising an airbag and a gas generator, wherein the gas generator inflates the airbag with gas upon impact, causing the airbag to rapidly penetrate the surface of the front seat and deploy towards the rear occupants; characterized in that, The airbag has a recessed portion at the position where it contacts the head of the rear passenger after it is deployed, which is used to accommodate the head of the rear passenger. The air bag has a structure that is larger at the top and smaller at the bottom, and the gas generator is located inside the lower end of the air bag; The lower part of the air bag has through holes to reduce the internal volume.

2. The rear frontal airbag for automobiles as described in claim 1, characterized in that, The air bag is made by sewing the front and back panels together along the perimeter.

3. The rear frontal airbag for automobiles as described in claim 1, characterized in that, The top of the air bag has at least one vent hole.

4. The rear frontal airbag for automobiles as described in claim 1, characterized in that, The upper part of the air bag is provided with a transverse pull strap for stabilizing the air bag, preventing shaking, and controlling the unfolded shape of the air bag.

5. The rear frontal airbag for automobiles as described in claim 1, characterized in that, The airbag is fixedly connected to the frame of the front seat by several fixed straps.

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