Improved side curtain airbag

Abstract

The utility model discloses an improved side curtain safety air bag, including side curtain air bag and gas generator, the side curtain air bag is long strip structure, and the upper side in the middle part is formed with the air inlet chamber that is connected with gas generator, and the front side part is formed with the front protection chamber that is communicated with the front end of air inlet chamber, and the back side part is formed with the back protection chamber that is communicated with the rear end of air inlet chamber, the lower side in the middle part of side curtain air bag is formed with V type intercommunication channel for covering in the dummy head forward sliding range in offset collision, and the front end and rear end of V type intercommunication channel are communicated with front protection chamber and back protection chamber, the utility model discloses form V type intercommunication channel in the lower side in the middle part of side curtain air bag, prevent rear passenger head impact door panel in offset collision.

Description

Technical Field

[0001] This utility model relates to the field of automotive airbag technology, and in particular to an improved side curtain airbag that prevents rear passengers from hitting the door panel with their heads in an offset collision. Background Technology

[0002] Side curtain airbags (CABs) are a type of safety device in a vehicle's passive restraint system. They deploy instantly in the event of a collision to protect the occupants. When deployed, the side curtain airbags inflate to prevent occupants' heads from impacting hard objects such as the vehicle's interior trim and window glass, thus protecting their safety.

[0003] In side-impact collisions, side curtain airbags are crucial safety components that protect the heads and necks of vehicle occupants from injury or mitigate injury; their performance directly impacts occupant safety. However, during small offset crash tests, because the rear-seat dummy's head moves forward and downward, conventionally designed side curtain airbags cannot cover the dummy's head in the vertical direction. When the dummy's head rebounds from its forward position, it may move outside the side curtain airbag, rendering it ineffective and affecting the results of the small offset crash test.

[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 an improved side curtain airbag that prevents rear passengers from hitting the door panel with their heads in an offset collision, in order to address 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] An improved side curtain airbag includes a side curtain airbag installed in the roof of a vehicle and a gas generator installed in the side curtain airbag.

[0008] The side curtain airbag has a long strip-shaped structure. An air intake chamber connected to the gas generator is formed in the upper part of the middle section. A front protection chamber connected to the front end of the air intake chamber is formed in the front part of the middle section. A rear protection chamber connected to the rear end of the air intake chamber is formed in the rear part of the middle section.

[0009] The lower middle part of the side curtain airbag has a V-shaped connecting channel for covering the range of forward sliding of the dummy's head during an offset collision. The front end and rear end of the V-shaped connecting channel are connected to the front protection chamber and the rear protection chamber.

[0010] In a preferred embodiment of this invention, the width of the V-shaped connecting channel remains consistent along the inflation direction.

[0011] In a preferred embodiment of the present invention, a non-inflatable area is formed in the middle of the side curtain air bag between the air inlet chamber and the V-shaped connecting channel.

[0012] In a preferred embodiment of the present invention, the side curtain airbag has several disc-shaped non-inflatable areas spaced apart in the non-collision area.

[0013] Due to the adoption of the above technical solution, the beneficial effects of this utility model are as follows:

[0014] 1. This utility model has a V-shaped connecting channel formed in the lower middle part of the side curtain airbag to cover the range of forward sliding of the dummy's head in an offset collision, thereby preventing the rear passengers' heads from hitting the door panel in an offset collision.

[0015] 2. The V-shaped connecting channel of this utility model has a uniform width, which avoids wrinkling of the air bag after inflation, thereby preventing the air bag from deflecting into or out of the vehicle, and ensuring that the air bag can protect a larger area when inflated and facing directly downwards.

[0016] 3. The V-shaped connecting channel of this utility model can connect the front protection chamber and the rear protection chamber, thereby balancing the filling time of the front and rear chambers and achieving the purpose of basically the same filling time of the front and rear chambers, preventing the air bag from floating up. 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 schematic diagram of the structure of the improved side curtain airbag of this utility model.

[0019] Figure 2 This is a schematic diagram of the motion trajectory of the rear-seat dummy in a small offset collision.

[0020] Figure 3 This is a schematic diagram showing the relative positions of the side curtain airbag and the dummy's head when the dummy's head is at the front and bottom. Detailed Implementation

[0021] 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.

[0022] See Figure 1 The figure shows an improved side curtain airbag, including a side curtain airbag 100 installed in the car roof and a gas generator (not shown in the figure) installed in the side curtain airbag 100.

[0023] The side curtain airbag 100 has a long strip-shaped structure. An air intake chamber 110 connected to a gas generator is formed in the upper part of its middle section. A front protection chamber 120 connected to the front end of the air intake chamber 110 is formed in the front part of its front section. A rear protection chamber 130 connected to the rear end of the air intake chamber 110 is formed in the rear part of its rear section.

[0024] A V-shaped connecting channel 140 is formed in the lower middle part of the side curtain airbag 100, which increases the width of the middle part of the side curtain airbag 100 and is used to cover the range of forward sliding of the dummy's head in an offset collision. The front end and rear end of the V-shaped connecting channel 140 are connected to the front protection chamber 120 and the rear protection chamber 130.

[0025] The V-shaped connecting channel 140 maintains a consistent width along the inflation direction to prevent the airbag from wrinkling after inflation. This prevents the airbag from folding inwards or outwards, ensuring that the airbag faces directly downwards after inflation to protect a larger area.

[0026] The side curtain airbag 100 has a central non-inflated area 150 located between the air inlet chamber 110 and the V-shaped connecting channel 140. The purpose of this is to ensure that the V-shaped connecting channel 140 is inflated evenly, so as to avoid the airbag floating up due to uneven inflation.

[0027] The side curtain airbag 100 has several disc-shaped non-inflatable areas 160 spaced apart in the non-collision area. The disc-shaped non-inflatable areas 160 can effectively limit the volume of the airbag and further prevent the side curtain airbag 100 from floating up.

[0028] See Figure 2 In a small offset collision, the rear passenger dummy will slide from its designed position 11 along the sliding trajectory 12 to its lowest position 13. When the rear passenger dummy's head is in the lowest position, as... Figure 3 As shown, the side curtain airbag 100 is vertically downward, meaning it will not face the inside or outside of the vehicle. When deployed, the side curtain airbag 100 will have the maximum coverage area. Moreover, the inflated side curtain airbag 100 is located between the dummy's head 20 and the door / window 30, preventing the door / window 30 from causing injury to the dummy's head 20 upon impact.

[0029] 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. An improved side curtain airbag, comprising a side curtain airbag installed in the roof of a vehicle and a gas generator installed in the side curtain airbag; The side curtain airbag has an elongated structure, with an air intake chamber connected to the gas generator formed in its upper middle section, a front protective chamber communicating with the front end of the air intake chamber formed in its front section, and a rear protective chamber communicating with the rear end of the air intake chamber formed in its rear section; characterized in that, The lower middle part of the side curtain airbag has a V-shaped connecting channel for covering the range of forward sliding of the dummy's head during an offset collision. The front end and rear end of the V-shaped connecting channel are connected to the front protection chamber and the rear protection chamber.

2. The improved side air curtain airbag of claim 1, wherein, The width of the V-shaped connecting channel remains consistent along the inflation direction.

3. The improved side airbag curtain of claim 1, wherein The middle part of the side curtain air bag, located between the air inlet chamber and the V-shaped connecting channel, forms an uninflated area.

4. The improved side air curtain airbag according to any one of claims 1 to 3, wherein The side curtain airbag has several disc-shaped uninflated areas spaced apart in the non-collision area.

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