A vehicle side airbag and a vehicle

Abstract

The application discloses a vehicle side air curtain and a vehicle, wherein the vehicle side air curtain comprises a first side air curtain structure which is arranged between an A-pillar trim panel and a vehicle body and is fixedly arranged on the vehicle body, the first side air curtain structure has a first joint which extends downward from the top of the A-pillar trim panel, the first joint divides the first side air curtain structure into a first air bag close to the A-pillar trim panel and a second air bag away from the A-pillar trim panel, and the first joint has a predetermined length, so that the first air bag close to the A-pillar trim panel has a predetermined thickness in the width direction of the vehicle body when the first air bag is fully inflated and unfolded. The application can ensure that the side air curtain can be normally unfolded in a side collision or a small offset collision accident, and better protection is provided for the driver and the passenger.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of vehicle safety, and particularly relates to a vehicle side air curtain and a vehicle. BACKGROUND

[0002] Due to the increasingly stringent protection requirements of the 2021 version of China-New Car Assessment Program (C-NCAP) and China Insurance Automotive Safety Index (C-IASI), the protection area coverage of the side air curtain is increased, and the impact problem of the air curtain point explosion on the environmental components is more prominent.

[0003] The existing side air curtain does not have a protection structure specially for the pillar trim. During the deployment of the side air curtain, there is a risk of breaking the A-pillar trim and causing splatter to injure the driver and passengers. If the air curtain impacts the high tuner and is stuck, there is a risk of insufficient side protection range. If the third row of a part of 7-seater SUV models is unstable, it will cause the protection effect of the third row of passengers to be unstable. SUMMARY

[0004] The technical problem to be solved by the embodiments of the present application is to provide a vehicle side air curtain and a vehicle to ensure that the side air curtain can normally deploy in a side collision or a small offset collision accident, and to provide better protection for the driver and passengers.

[0005] To solve the above technical problems, the present application provides a vehicle side air curtain, comprising a first side air curtain structure located between an A-pillar trim and a vehicle body and fixedly installed on the vehicle body, the first side air curtain structure having a first joint extending downward from a position above a top edge of the A-pillar trim, the first joint separating the first side air curtain structure into a first air bag close to the A-pillar trim and a second air bag away from the A-pillar trim, the first joint having a predetermined length to make the first air bag close to the A-pillar trim have a predetermined thickness in the width direction of the vehicle body when fully inflated and deployed.

[0006] Further, the thickness of the first air bag in the width direction of the vehicle body when fully inflated and deployed is 60mm-120mm.

[0007] Further, the distance between the first joint and the edge of the A-pillar trim is at least 10mm or more.

[0008] Further, the vehicle side air curtain further comprises a second side air curtain structure located between a B-pillar trim and the vehicle body and fixedly installed on the vehicle body, the second side air curtain structure having an L-shaped second joint, and the second joint and the edge of the second side air curtain structure are surrounded by a third air bag deployable at a high tuner button. Further, the thickness of the first air bag in the width direction of the vehicle body when fully inflated and deployed is 60mm-120mm.

[0007] Further, the distance between the first joint and the edge of the A-pillar trim is at least 10mm or more.

[0008] Further, the vehicle side air curtain further comprises a second side air curtain structure located between a B-pillar trim and the vehicle body and fixedly installed on the vehicle body, the second side air curtain structure having an L-shaped second joint, and the second joint and the edge of the second side air curtain structure are surrounded by a third air bag deployable at a high tuner button. Further, the thickness of the first air bag in the width direction of the vehicle body when fully inflated and deployed is 60mm-120mm.

[0009] Further, the air inlet of the third airbag is located below the third airbag, and the air flow enters the air inlet to fill the third airbag from bottom to top, forming a U-shaped backflow inflation path.

[0010] Further, the width of the third airbag along the length direction of the vehicle body when inflated is at least 90mm.

[0011] Further, the third airbag is located above the B-pillar trim when not inflated, and covers the surface of the B-pillar trim when inflated, the B-pillar trim is provided with a high tuner button, and the third airbag is filled when inflated to reach the high tuner button.

[0012] Further, the vehicle side airbag further comprises a third side airbag structure located in the D-pillar area and fixedly installed on the vehicle body, the third side airbag structure has a third seam inclined downward toward the rear of the vehicle, and the third seam separates the third side airbag structure into a fourth airbag and a fifth airbag.

[0013] Further, the inflation directions of the fourth airbag and the fifth airbag are the same, and the volumes of the filled airbags differ by no more than 10cm 3 , and the lengths of the air flow paths differ by no more than 2cm.

[0014] The embodiment of the present application also provides a vehicle with the vehicle side airbag.

[0015] The implementation of the present application has the following beneficial effects: by designing the first seam at the A-pillar trim, the risk of the side airbag expanding to break the A-pillar trim and splash to injure the driver and passengers is avoided; by designing the second seam in the B-pillar area, the backflow inflation path is formed in this area, the inflation speed of the airbag is slowed down, the risk of the high tuner being stuck due to the impact of the expanding side airbag is avoided, and the risk of insufficient side protection range is avoided; by designing the third seam in the third row area, the inflation air flow is evenly guided to flow on both sides of the third seam, and the risk of insufficient protection of the third row passengers due to unstable expansion of the third row is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0017] Figure 1 Fig. 1 is a structural schematic diagram of a vehicle side airbag according to an embodiment of the present application.

[0018] Figure 2Figure 1 shows the assembly structure of the first side airbag structure and the A-pillar trim panel in the first embodiment of the present application.

[0019] Figure 3 Figure 2 shows the cross-sectional structure of A-A in the first embodiment of the present application. Figure 2

[0020] Figure 4 Figure 3 shows the assembly structure of the second side airbag structure and the B-pillar in the first embodiment of the present application.

[0021] Figure 5 Figure 4 shows the assembly structure of the third side airbag structure and the D-pillar in the first embodiment of the present application. DETAILED DESCRIPTION

[0022] The following description of the embodiments with reference to the drawings is used to illustrate the specific embodiments that the present application can be implemented. The directions and position terms mentioned in the present application, such as "up", "down", "front", "back", "left", "right", "in", "out", "top", "bottom", "side", etc. are only the directions or positions of the drawings. Therefore, the directions and position terms used are used to illustrate and understand the present application, and are not a limitation on the scope of protection of the present application.

[0023] Please refer to Figures 1-3 Figure 1 shows the assembly structure of the first side airbag structure and the A-pillar trim panel in the first embodiment of the present application. The first side airbag structure is provided between the A-pillar trim panel 2 and the vehicle body 1 and is fixedly installed on the vehicle body 1. The first side airbag structure has a first seam 10 extending downward from a position above the top edge of the A-pillar trim panel. The first seam 10 separates the first side airbag structure into a first airbag bag close to the A-pillar trim panel and a second airbag bag away from the A-pillar trim panel. The first seam 10 has a predetermined length so that the first airbag bag 11 close to the A-pillar trim panel 2 has a predetermined thickness in the width direction of the vehicle body when fully inflated and deployed.

[0024] Specifically, the first side airbag structure is fixed to the sheet metal of the vehicle body 1 by bolts or buckles, and the A-pillar trim panel 2 is fixed to the sheet metal of the vehicle body 1 by bolts or buckles. The first side airbag structure is located between the A-pillar trim panel 2 and the sheet metal of the vehicle body 1, and is inflated and deployed to protect the driver's head when a side collision or a small offset collision accident occurs, that is, Figure 1 Figure 1 shows the assembly structure of the first side airbag structure and the A-pillar trim panel in the first embodiment of the present application. The first side airbag structure is provided between the A-pillar trim panel 2 and the vehicle body 1 and is fixedly installed on the vehicle body 1. The first side airbag structure has a first seam 10 extending downward from a position above the top edge of the A-pillar trim panel. The first seam 10 separates the first side airbag structure into a first airbag bag close to the A-pillar trim panel and a second airbag bag away from the A-pillar trim panel. The first seam 10 has a predetermined length so that the first airbag bag 11 close to the A-pillar trim panel 2 has a predetermined thickness in the width direction of the vehicle body when fully inflated and deployed. Figure 1 Figure 3 ​​As shown, the first joint 10 separates the first side curtain structure into a first airbag 11 close to the A-pillar trim 2 and a second airbag 12 away from the A-pillar trim 2, wherein the length of the first joint 10 can be controlled to control the airbag perimeter of the first airbag 11 after inflation, and further control the inflation thickness of the first airbag 11, so as to reduce the impact of the inflated side curtain on the A-pillar trim 2, and avoid the A-pillar trim 2 from being broken due to excessive deformation and causing splashes to harm the passengers in the passenger compartment. It can be understood that the longer the first joint 10, the longer the airbag perimeter of the upper airbag 11 after inflation, and the smaller the inflation thickness of the upper airbag 11; on the contrary, the shorter the first joint 10, the shorter the airbag perimeter of the upper airbag 11 after inflation, and the greater the inflation thickness of the first airbag 11. As an example, by pre-setting the length of the first joint 10, the inflation thickness w of the first airbag 11 is between 60mm and 120mm, which can meet the protection requirements and reduce the impact on the A-pillar trim.

[0025] Further, as shown in Figure 2 , when installing the first side curtain structure, in order to avoid the first airbag 11 from being blocked by the edge of the A-pillar trim 2 and not inflating smoothly, the first joint 10 needs to be kept a certain distance d from the edge of the top of the A-pillar trim 2, as an example, the distance d in this embodiment should be at least 10mm or more.

[0026] Please refer to Figure 4 , the vehicle side curtain of the present embodiment further comprises a second side curtain structure located between the B-pillar trim 3 and the vehicle body 1 and fixedly installed on the vehicle body 1 by bolts or buckles, which is used to inflate and deploy to protect the driver's head when a side collision or a small offset collision accident occurs, that is Figure 1 , the C-NCAP protection area. The second side curtain structure has a second joint 20 in the shape of L, which surrounds a third airbag 23 with the edge crimp joint of the second side curtain structure, and the air inlet of the third airbag 23 is located below the third airbag 23. The third airbag 23 is located above the B-pillar trim 3 when it is not deployed, and will cover the surface of the B-pillar trim 3 when it is inflated and deployed, and the B-pillar trim 3 is provided with a tuner button 30. By setting the second joint 20 in the shape of L, the present embodiment can control the flow direction of the air flow (as shown by the arrows in Figure 4 ), the air flow enters from the air inlet A shown in Figure 1 , and then fills into the third airbag 23 from bottom to top, forming a U-shaped reflux inflation path, so as to slow down the inflation speed of the third airbag 23, and the third airbag 23 is filled when it reaches the tuner button 30 in the later stage of inflation and deployment, avoiding the air flow directly impacting the tuner button 30. Further, the width D of the third airbag 23 in the length direction of the vehicle body when it is inflated and deployed is at least 90mm, which can increase the air flow path and further slow down the inflation speed of the third airbag 23.

[0027] Please refer toFigure 5 As shown, the vehicle side airbag of the embodiment further comprises a third side airbag structure located in the D-pillar region and fixedly installed on the vehicle body 1 by bolts or buckles, for inflating to protect the heads of the third-row passengers in the passenger cabin when a side collision or a small offset collision accident occurs, that is Figure 1 and Figure 5 the C-NCAP protection region. It can be understood that the D-pillar generally exists in SUVs, MPVs or some large vehicles, located at the intersection of the rear small window and the rear windshield. The third side airbag structure has a third seam 40 inclined downward toward the rear of the vehicle, which separates the third side airbag structure into a fourth airbag 41 and a fifth airbag 42. The fourth airbag 41 and the fifth airbag 42 inflate in the same direction (as shown by the arrows in Figure 5 ), and the volumes after being filled are similar, and the lengths of the air flow paths after being inflated are similar, so that the force balance ensures that the third side airbag structure is stable in the direction of unfolding, and does not tilt upward. As an example, the volume difference between the fourth airbag 41 and the fifth airbag 42 after being filled is less than or equal to 10 cm 3 , and the length difference of the air flow paths after being inflated is less than or equal to 2 cm. The third seam 40 designed in the embodiment can guide the inflating air flow to flow uniformly on both sides of the third seam 40, so as to ensure that the third side airbag structure sinks downward toward the lower part of the vehicle and extends toward the rear of the vehicle when unfolding, and avoid affecting the protection effect of the third-row protection region of the vehicle due to insufficient unfolding of the side airbag.

[0028] Corresponding to the vehicle side airbag of the first embodiment of the present application, the second embodiment of the present application further provides a vehicle with the vehicle side airbag as described in the first embodiment of the present application.

[0029] For the working principle and process of the embodiment, refer to the foregoing description of the first embodiment of the present application, which will not be repeated here.

[0030] As can be seen from the foregoing description, compared with the prior art, the beneficial effects of the present application are that: by designing the first seam at the A-pillar trim, the risk of the side airbag unfolding and breaking the A-pillar trim to produce splashes to injure the driver and passengers is avoided; by designing the second seam in the B-pillar region, a backflow inflating path is formed in this region, the inflating speed of the airbag is slowed down, and the risk that the side airbag unfolding impacts the tuner and is stuck is avoided, thereby causing the risk of insufficient side protection range; by designing the third seam in the third-row region, the inflating air flow is guided to flow uniformly on both sides of the third seam, and the risk of insufficient protection of the third-row passengers due to unstable unfolding of the third-row is avoided.

[0031] The above only discloses the preferred embodiments of the present application, and of course cannot limit the scope of the rights of the present application, so the equivalent changes made according to the claims of the present application still fall within the scope covered by the present application.

Claims

1. A vehicle side airbag, characterized by, The vehicle side airbag includes a first side airbag structure between an A-pillar trim and a vehicle body and fixedly installed on the vehicle body, the first side airbag structure having a first joint extending downward from a position above a top edge of the A-pillar trim, the first joint separating the first side airbag structure into a first airbag bag close to the A-pillar trim and a second airbag bag away from the A-pillar trim, the first joint having a predetermined length so that the first airbag bag close to the A-pillar trim has a predetermined thickness in a vehicle body width direction when fully inflated and deployed; The vehicle side airbag further includes a second side airbag structure between a B-pillar trim and the vehicle body and fixedly installed on the vehicle body, the second side airbag structure having an L-shaped second joint surrounding an edge crimp joint of the second side airbag structure to define a third airbag bag deployable at a high tuner button.

2. The vehicle side air curtain according to claim 1, characterized by The thickness of the first airbag bag in the vehicle body width direction when fully inflated and deployed is 60mm-120mm.

3. The vehicle side air curtain according to claim 2, characterized by The first joint is spaced apart from the top edge of the A-pillar trim by at least 10mm.

4. The vehicle side air curtain according to claim 1, characterized by The third airbag bag has an air inlet below the third airbag bag, and air flows into the air inlet from below to fill the third airbag bag from bottom to top, forming a U-shaped backflow inflation path.

5. The vehicle side air curtain according to claim 1, characterized by The third airbag bag has a width in a vehicle body length direction of at least 90mm when inflated and deployed.

6. The vehicle side air curtain according to claim 1, characterized by The third airbag bag is located above the B-pillar trim when not deployed and covers the surface of the B-pillar trim when inflated and deployed, the B-pillar trim having a high tuner button, and the third airbag bag is fully inflated when inflated and deployed to reach the high tuner button.

7. The vehicle side air curtain according to claim 1, characterized by The vehicle side airbag further includes a third side airbag structure in a D-pillar region and fixedly installed on the vehicle body, the third side airbag structure having a third joint inclined downward toward the rear of the vehicle, the third joint separating the third side airbag structure into a fourth airbag bag above the third joint and a fifth airbag bag below the third joint.

8. The vehicle side air curtain according to claim 7, characterized by The fourth air bag and the fifth air bag have the same inflation direction, and the volume difference of the filled air bags is less than or equal to 10 cm 3 , and the length difference of the air flow path of the inflated air bags is less than or equal to 2 cm.

9. A vehicle characterized by comprising: The vehicle side airbag has any one of the features of claims 1-8.

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