Seat safety airbag device

Abstract

The utility model discloses a seat safety air bag device which comprises an air bag arranged in a seat backrest in a folding mode. The gas generator is mounted in a backrest of the seat and is used for filling high-pressure gas into the gas bag when the gas generator is exploded, so that the gas bag is quickly unfolded; the drawstring is sewn in the air bag and divides the interior of the air bag into an upper cavity and a lower cavity, the upper cavity is used for protecting the head of a passenger, the lower cavity is communicated with the upper cavity and used for protecting the chest, the abdomen and the pelvis of the passenger, and the lower cavity of the air bag is filled with high-pressure air inflated by the air generator firstly; and the upper cavity of the air bag is filled with the air. The utility model solves the problem of automobile collision safety of large-angle seats such as comfortable seats and zero-gravity seats, and is particularly suitable for the existing seats with large-angle backrests, such as comfortable seats and zero-gravity seats, which can lie down.

Description

Technical Field

[0001] This utility model relates to the field of automotive airbag technology, and in particular to a seat airbag device. Background Technology

[0002] Car airbags are a type of safety device in a vehicle's passive restraint system. They deploy instantaneously in the event of a collision to protect the occupants. However, existing seat airbags are designed to protect occupants at a normal seat back angle. When the seat back angle is large, the relative position between the occupant and the airbag changes, rendering existing airbags ineffective in protecting the occupant.

[0003] For example, see Figure 1 The diagram shows an existing seat airbag, which includes a seat airbag 10 and a curtain airbag 20. The seat airbag 10 can only protect the occupant's chest, abdomen, and pelvis, while the occupant's head requires protection from the curtain airbag 20 in the roof. When the seat back is at a large angle, the current seat airbag 10 cannot protect the occupant's head because the curtain airbag 20 cannot move with the seat.

[0004] 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

[0005] The technical problem to be solved by this utility model is to provide a seat airbag device that can effectively protect occupants according to different opening and closing angles of the seat back, in order to overcome the shortcomings of the existing technology.

[0006] The technical problem to be solved by this utility model can be achieved by the following technical solution:

[0007] A seat airbag device, comprising:

[0008] An airbag, wherein the airbag is folded and disposed inside the seat back;

[0009] A gas generator, installed inside the seat back, for injecting high-pressure gas into the gas bag upon ignition, causing the gas bag to rapidly deploy; and

[0010] A pull strap is sewn inside the airbag and divides the interior of the airbag into an upper cavity for protecting the occupant's head and a lower cavity connected to the upper cavity for protecting the occupant's chest, abdomen and pelvis. High-pressure gas injected by the gas generator first fills the lower cavity of the airbag and then fills the upper cavity of the airbag.

[0011] In a preferred embodiment of this utility model, the pull strap is a non-perforated pull strap. After the pull strap is sewn, left and right air inlet channels are reserved between its left and right ends and the inner side of the air bag, so that the gas in the lower cavity of the air bag enters the upper cavity of the air bag through the left and right air inlet channels.

[0012] In a preferred embodiment of the present invention, at least one air inlet hole is provided on the pull strap, so that the gas in the lower cavity of the air bag enters the upper cavity of the air bag through the air inlet hole.

[0013] In a preferred embodiment of this utility model, the pull strap is a long strip pull strap.

[0014] In a preferred embodiment of the present invention, the air bag has at least one exhaust port communicating with the lower cavity.

[0015] In a preferred embodiment of this utility model, the air inlet of the air bag connected to the gas generator is in communication with the lower cavity of the air bag.

[0016] Due to the adoption of the above technical solution, the beneficial effects of this utility model are as follows: The airbag of this utility model is installed inside the seat back, and its interior is divided into an upper chamber and a lower chamber that are interconnected by a pull strap. The lower chamber is used to protect the occupant's chest, abdomen, and pelvis, while the upper chamber is used to protect the occupant's head. This ensures the safety of the occupant regardless of whether the seat is at a normal angle or a large angle. This utility model solves the problem of automotive collision safety for seats with large angles, such as comfort seats and zero-gravity seats, and is especially suitable for current comfort seats and zero-gravity seats with large reclining backrests. Attached Figure Description

[0017] 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.

[0018] Figure 1 This is a structural diagram of an existing seat airbag.

[0019] Figure 2 This is a schematic diagram of the structure of Embodiment 1 of the seat airbag device of this utility model.

[0020] Figure 3 This is a schematic diagram of the structure of Embodiment 1 of the pull strap of this utility model.

[0021] Figure 4This is a schematic diagram of Embodiment 2 of the seat airbag device of this utility model.

[0022] Figure 5 This is a schematic diagram of the structure of embodiment 2 of the pull strap of this utility model.

[0023] Figure 6 This is a schematic diagram of the operation of this utility model on a seat with a normal backrest angle.

[0024] Figure 7 This is a schematic diagram of the operation of this utility model on a seat with a large backrest angle. Detailed Implementation

[0025] 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.

[0026] Example 1

[0027] See Figure 2 and combined Figure 6 and Figure 7 The figure shows a seat airbag device, including an airbag 100, an air generator 200, and a strap 300.

[0028] The airbag 100 is folded and installed inside the seat back 10. The airbag 100 has at least one vent 130 communicating with the lower cavity 120 to release excess gas and prevent injury to the occupant.

[0029] The gas generator 200 is installed inside the seat back 10 and is connected to the airbag controller module ACU. When the car is involved in a collision, the airbag controller module ACU will send an electrical signal to the gas generator 200. After the gas generator 200 is detonated, it will generate a large amount of high-pressure gas and fill the airbag 100, causing the airbag 100 to deploy rapidly.

[0030] See Figure 3 and combined Figure 2 A strap 300 is sewn inside the airbag 100 and divides the interior of the airbag 100 into an upper cavity 110 and a lower cavity 120. The upper cavity 110 and the lower cavity 120 are connected to each other. The volume of the upper cavity 110 is smaller than that of the lower cavity 120. The upper cavity 110 is used to protect the occupant's head, and the lower cavity 120 is used to protect the occupant's chest, abdomen, and pelvis. The air inlet of the airbag 100, which is connected to the gas generator 200, is connected to the lower cavity 120 of the airbag 100.

[0031] The pull strap 300 is a long strip. Of course, the shape of the pull strap 300 is not limited to the shape in this embodiment, and it should be designed according to actual needs. The pull strap 300 is a non-perforated pull strap. After the pull strap 300 is sewn, left and right air inlet channels 310 and 320 for distributing airflow are reserved between its left and right ends and the inner side of the air bag 100. That is, the two ends of the pull strap 300 are not sewn to the end, so that the gas in the lower cavity 120 of the air bag 100 enters the upper cavity 110 of the air bag 100 through the left and right air inlet channels 310 and 320.

[0032] When a car collision occurs, the airbag controller module (ACU) sends an electrical signal to the gas generator 200. After the gas generator 200 detonates, it generates a large amount of high-pressure gas that fills the airbag 100. The lower chamber 120 of the airbag 100 is filled first, protecting the occupant's chest, abdomen, and pelvis from compression by the door trim and B-pillar trim. Then, the gas passes from the lower chamber 120 through the airflow regulating strap 300 into the upper chamber 110, protecting the occupant's head from compression by the B-pillar trim.

[0033] The seat airbag device of this utility model can provide protection as the seat is adjusted. When the seat is at its normal backrest angle, the airbag 100 deploys its lower chamber 120 and upper chamber 110, simultaneously protecting the occupant's head, chest, abdomen, and pelvis. Figure 6 As shown; when the seat back is adjusted to a large angle, the occupant is in a nearly reclining position, and the airbag 100 will move with the backrest, that is, with the occupant. Even when the airbag 100 deploys its lower chamber 120 and upper chamber 110, it can still protect the occupant's head, chest, abdomen, and pelvis. Figure 7 As shown. The protection provided by the seat airbag device of this utility model requires the use of the integrated seat belt 20 to effectively protect the occupant.

[0034] Example 2

[0035] The seat airbag device in this embodiment has a similar mechanism to the seat airbag device in Embodiment 1, the difference being:

[0036] See Figure 4 and Figure 5 The pull strap 300a has two air inlet holes 310a spaced apart, which are used to distribute airflow, allowing gas in the lower cavity 120a of the air bag 100a to enter the upper cavity 110a of the air bag 100a through the air inlet holes 310a. When sewing, the two ends of the pull strap 300a are sewn together. The shape and number of air inlet holes 310a on the pull strap 300a are not limited to this embodiment.

[0037] 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 seat airbag device, characterized in that, include: An airbag, wherein the airbag is folded and disposed inside the seat back; A gas generator, installed inside the seat back, is used to fill the gas bag with high-pressure gas when ignited, causing the gas bag to expand rapidly. as well as A pull strap is sewn inside the airbag and divides the interior of the airbag into an upper cavity for protecting the occupant's head and a lower cavity connected to the upper cavity for protecting the occupant's chest, abdomen and pelvis. High-pressure gas injected by the gas generator first fills the lower cavity of the airbag and then fills the upper cavity of the airbag.

2. The seat airbag device as described in claim 1, characterized in that, The pull strap is a non-perforated pull strap. After the pull strap is sewn, left and right air intake channels are reserved between its left and right ends and the inner side of the air bag, so that the gas in the lower cavity of the air bag enters the upper cavity of the air bag through the left and right air intake channels.

3. The seat airbag device as described in claim 1, characterized in that, The pull strap has at least one air inlet hole, so that the gas in the lower cavity of the air bag enters the upper cavity of the air bag through the air inlet hole.

4. The seat airbag device as described in claim 2 or 3, characterized in that, The pull strap is a long strip.

5. The seat airbag device as described in claim 1, characterized in that, The air bag has at least one exhaust port that communicates with the lower cavity.

6. The seat airbag device as described in claim 1, characterized in that, The air inlet of the air bag, which is connected to the gas generator, is in communication with the lower cavity of the air bag.

Images