阅读说明：本技术 安全气囊及安全气囊组件 (Airbag and airbag module ) 是由 靳恩伟 张茜 王安苑 于 2018-07-24 设计创作，主要内容包括：本发明涉及安全气囊和安全气囊组件。安全气囊包括气袋,所述气袋具有在外侧彼此连接的第一部分和第二部分,当所述气袋处于展开状态时,所述第一部分被充气而膨胀,以及,所述第二部分未被充气并且随着所述第一部分的膨胀而在所述气袋的展开区域内延伸,其中,所述展开区域在乘员和车辆之间为乘员提供保护；并且,当所述气袋处于收纳状态时,所述第一部分和所述第二部分均被容纳在车辆内的预定空间中。本发明的安全气囊能够在为乘员提供更大的保护的同时实现轻量化。(The invention relates to an airbag and an airbag module. An airbag includes an airbag having a first portion and a second portion connected to each other on the outside, the first portion being inflated to expand when the airbag is in a deployed state, and the second portion being uninflated and extending within a deployment region of the airbag with expansion of the first portion, wherein the deployment region provides protection for an occupant between the occupant and a vehicle; and, when the air bag is in the stored state, the first portion and the second portion are both accommodated in a predetermined space within the vehicle. The airbag of the invention can provide greater protection for passengers and realize light weight.)

1. An air bag, characterized in that,

the airbag comprises an airbag with a first part and a second part which are connected to each other on the outside,

the first portion is inflated to expand when the airbag is in a deployed state, and the second portion is uninflated and extends within a deployment region of the airbag as the first portion expands, wherein the deployment region provides protection for an occupant between the occupant and a vehicle; and the number of the first and second electrodes,

the first portion and the second portion are each accommodated in a predetermined space within a vehicle when the air bag is in a stored state.

2. The airbag of claim 1 wherein said airbag comprises a plurality of said second portions arranged in spaced relation to one another.

3. The airbag of claim 2 wherein the second portion is connected to the first portion in a plane formed at a midpoint of a thickness of the airbag when the airbag is in a deployed state.

4. The airbag of claim 3 wherein said second portion is elongated.

5. The airbag of claim 4 wherein a length of the plurality of second portions extends away from an inflation port of the airbag when the airbag is in a deployed state.

6. The airbag of claim 5 wherein said second portion is a monolithic structure.

7. The airbag of claim 6 wherein the first portion and the second portion form the airbag in a one-piece fashion.

8. The airbag according to claim 1, wherein the airbag includes only one of the bag, and the bag has a protective sheet that covers an outer side surface of the bag.

9. The airbag according to claim 1, wherein the airbag includes a plurality of the bag that are joined together on an outer side, and the plurality of the bag are stacked in a thickness direction of the bag when the bag is in a deployed state.

10. The airbag according to claim 9, wherein a reinforcement piece is provided at a connecting position of outer edges of a plurality of the bags.

11. The airbag of any preceding claim wherein the airbag is for use as a pedestrian airbag or a centre airbag.

12. An airbag assembly comprising:

a gas generator; and

the airbag of any of claims 1 to 11.

Technical Field

The present invention relates to an automotive safety device, and more particularly to an airbag and an airbag module.

Background

In vehicles, an airbag device is commonly used to protect an occupant in the vehicle from damage in an emergency. The airbag device includes an airbag and a gas generator. The airbag is generally in a stored state and is deployed only when the vehicle is collided or impacted. When a vehicle is collided or impacted, the gas generated by the gas generator through explosion rapidly inflates the airbag in the storage state, and the inflated airbag is expanded to protect the passengers of the vehicle. Typically, the actual protection volume of the airbag between the occupant and the vehicle, which provides protection for the occupant, is equal to the inflation volume of the airbag. Therefore, if the airbag is required to have a large actual protection volume, the airbag requires a large inflation amount, and accordingly, the gas generator is required to have a large gas production amount, thereby requiring a large-volume gas generator. In this case, the weight and volume of the airbag disadvantageously increase.

Therefore, current airbags cannot achieve weight reduction while providing greater protection for occupants.

Disclosure of Invention

In order to solve the above-mentioned problems, the present invention provides an airbag, wherein,

the airbag comprises an airbag with a first part and a second part which are connected to each other on the outside,

the first portion is inflated to expand when the airbag is in a deployed state, and the second portion is uninflated and extends within a deployment region of the airbag as the first portion expands, wherein the deployment region provides protection for an occupant between the occupant and a vehicle; and the number of the first and second electrodes,

the first portion and the second portion are each accommodated in a predetermined space within a vehicle when the air bag is in a stored state.

According to an embodiment of the invention, the air pocket comprises a plurality of said second portions arranged spaced with respect to each other.

According to an embodiment of the invention, the second portion is connected to the first portion in a plane formed by a middle point of the thickness of the gas bag when the gas bag is in the deployed state.

According to an embodiment of the invention, the second portion is elongated.

According to an embodiment of the present invention, when the air bag is in the deployed state, lengths of the plurality of second portions extend in a direction away from an inflation port of the airbag.

According to an embodiment of the invention, the second part is a monolithic structure.

According to an embodiment of the invention, the first portion and the second portion form the air pocket in one piece.

According to an embodiment of the present invention, the airbag includes only one of the air bags, and the air bag has a protective sheet covering an outer side surface of the air bag.

According to an embodiment of the present invention, the airbag includes a plurality of the air bags that are connected together on the outside, and the plurality of the air bags are stacked in the thickness direction of the air bag when the air bag is in the deployed state.

According to an embodiment of the present invention, a reinforcement sheet is provided at a connecting position of outer edges of a plurality of the air pockets.

According to an embodiment of the invention, any of the above airbags is used as a pedestrian airbag or a center airbag.

The present invention also provides an airbag module comprising: a gas generator; and the above airbag.

The airbag of the invention can provide greater protection for passengers and realize light weight.

Drawings

Fig. 1(a) and 1(b) show schematic views of an airbag according to an embodiment of the present invention.

Fig. 2(a) and 2(b) show schematic views of airbags according to further embodiments of the present invention.

Fig. 3(a) to 3(c) illustrate a method for manufacturing the airbag shown in fig. 2(a) and 2 (b).

Detailed Description

Hereinafter, specific embodiments of an airbag and an airbag module according to the present invention will be described with reference to the accompanying drawings. The following detailed description and drawings are included to illustrate the principles of the invention, which is not to be limited to the preferred embodiments described, but is to be defined by the appended claims.

Fig. 1(a) and 1(b) show an airbag 10 according to an embodiment of the present invention. An airbag according to an embodiment of the present invention will be described below with reference to fig. 1(a) and 1 (b).

As shown in fig. 1(a), the airbag 10 includes an airbag 11, the airbag 11 having a first portion 111 and a second portion 112 connected to each other at the outside, the first portion 111 being inflated to expand when the airbag 11 is in a deployed state, and the second portion 112 being uninflated and extending within a deployment region of the airbag 11 as the first portion 111 expands, wherein the deployment region provides protection for an occupant between the occupant and a vehicle, the deployment region being naturally formed as the first portion of the airbag inflates, expands and serves to provide protection for the occupant, as can be understood by those skilled in the art; also, when the air bag 11 is in the stored state, the first portion 111 and the second portion 112 are both accommodated in a predetermined space within the vehicle. It can also be observed from fig. 1(a) that when the airbag 11 is in the deployed state, the second portion 112 is connected to the first portion 111 in a plane formed by a midpoint of the thickness of the airbag 11, such that the airbag 11 in the deployed state is generally a flat profile overall. Further, the second portion 112 is of a single-piece structure, but it will be understood by those skilled in the art that the second portion 112 is not limited to being of a single-piece structure, and may be of a two-piece structure as with the first portion 111, for example, or, as the case may be, the second portion 112 may be of a three-piece structure or more, so as to be firmly connected to the first portion 111 during deployment of the airbag 11. In addition, in order to protect the bag 11, the airbag 10 shown in fig. 1(a) is further provided with a protective sheet 12 that covers the outer surface of the bag 11.

The airbag 10 shown in fig. 1(a) is described in more detail below in conjunction with fig. 1 (b). As shown in fig. 1(b), the airbag 10 includes a plurality of elongated second portions 112, and the second portions 112 are arranged at intervals from each other. The length of the second portion 112 extends in the up-down direction, and the arrow in fig. 1(b) shows the flow direction of the gas generated by the gas generator (not shown), and therefore, the length of the second portion 112 extends in a direction away from the inflation port of the airbag, i.e., the position where the gas generator is located, so that the airbag 10 is rapidly deployed during inflation by being inflated. It will be understood by those skilled in the art that the direction of extension of the length of the second portion is not limited to the up-down direction shown in fig. 1(b), and in fact, the length of the second portion may extend in a direction away from the inflation port of the airbag, for example, the direction of extension of the length of the second portion may also be the transverse direction of fig. 1(b) or the direction of extension of the length of the second portion may be such that the second portion 112 of fig. 1(b) is inclined 45 ° to the left, so that the gas generated by the gas generator can flow rapidly, thereby rapidly deploying the airbag. It will be understood by those skilled in the art that the number of the second portions is not limited to a plurality, and for example, the number of the second portions may be set to one according to the actual situation. It will be understood by those skilled in the art that the second portion is not limited to an elongated shape, and for example, the second portion may be provided in a curved shape, a circular shape, a triangular shape, a matrix form of a plurality of circular shapes, or the like, depending on the actual situation.

The airbag 10 shown in fig. 1(a) and 1(b) may be installed in a predetermined installation space of a vehicle to be used as, for example, a center airbag and a pedestrian airbag.

As can be seen from fig. 1(a) and 1(b) taken together, the deployment region of the airbag 10 of the present invention is constituted by the first portion 111 and the second portion 112, and since the second portion 112 does not need to be inflated during the deployment process of the airbag 11, the deployment volume of the deployment region is reduced without being reduced in the amount of inflation, and therefore, the airbag of the present invention can achieve weight reduction while providing greater protection.

Fig. 2(a) and 2(b) illustrate airbags according to further embodiments of the present invention. To avoid redundancy, the following description will be made only for differences from the embodiment shown in fig. 1(a) and 1 (b). As shown in fig. 2(a), the airbag 20 includes two air bags 21A and 21B, the air bags 21A and 21B are joined together on the outside, and, when the air bags 21A and 21B are in the deployed state, the two air bags 21A and 21B are superimposed in the thickness direction of the air bags, that is, the air bags 21A and 21B are superimposed in the up-down direction in fig. 2 (a). It can also be observed from fig. 2(B) that at the connecting locations 21A and 21B of the outer edge of the air bag, the entire air bag is closed using sewing threads 210. Furthermore, it will be appreciated by those skilled in the art that a reinforcement panel (not shown) may also be provided at the attachment location of the outer edge of the air bag as the case may be.

Those skilled in the art will appreciate that the embodiment shown in fig. 1(a) and 1(b) and the embodiment shown in fig. 2(a) and 2(b) are merely examples, and the airbag of the present invention is not limited to the structure in the above-described embodiments, and for example, the airbag of the present invention may also have three or more air bags superimposed on each other in the thickness direction.

The airbag 20 shown in fig. 2(a) and 2(b) may be installed in a predetermined installation space of a vehicle to be used as, for example, a driver airbag.

In addition to the central airbag, pedestrian airbag and driver airbag listed by way of example, the airbag according to the invention can also be installed in any suitable installation space of a vehicle for use as, for example, a passenger airbag, a curtain airbag, a knee airbag or the like.

Fig. 3(a) to 3(c) show a manufacturing method for the airbag shown in fig. 2(a) and 2 (b). A method of manufacturing an airbag according to an embodiment of the present invention is described below with reference to fig. 3(a) to 3 (c).

As shown in fig. 3(a), first, two symmetrical air bags 21A 'and 21B' are woven; then, as shown in fig. 3(B), two air bags 21A and 21B are punched to cut out as required (for example, as desired) and other structures such as gas generator mounting holes 215 and 216 are punched on the upper side of the airbag shown in fig. 3(B), and upper and lower air bag connecting and vent holes 213 and 214 are punched on the lower side of the airbag shown in fig. 3 (B); next, as shown in fig. 3(c), the right side air bag in fig. 3(B) is folded over above the left side air bag, and adjacent inner layers of the two air bags 21A and 21B, that is, upper layers of the two left and right air bags in fig. 3(B), are sewn together at the air bag connecting and vent holes 213 and 214, the two air bags 21A and 21B are sewn together at the outer edges and the reinforcement sheet 210 is sewn at the connecting part of the partial outer edges, and finally a gas generator (not shown) is mounted on the upper layer of the air bag of the airbag 20 of fig. 3(c) to communicate with the air bag connecting and vent holes 213 and 214 for inflating the two air bags, and further, the reinforcement sheet 210' is provided at the position where the gas generator is mounted.

It will be appreciated by those skilled in the art that the manufacture of the airbag of the present invention is not limited to the weaving process shown in fig. 3(a) above, and that other attachment processes may be selected, for example, two separate airbags may be sewn or bonded together.

As described above, although the exemplary embodiments of the present invention have been described in the description with reference to the drawings, the present invention is not limited to the above-described embodiments, and the scope of the present invention should be defined by the claims and their equivalents.