Vehicle side air bag and vehicle

Abstract

The embodiment of the invention provides a vehicle side air bag and a vehicle, the vehicle side air bag is used for protecting a main driver passenger and / or a co-driver passenger, and the side air bag comprises a main bag which is fixed to the side portion of a seat and extends to the trunk area of the passenger and an auxiliary bag which extends to the head area of the passenger from the main bag. The main bag and the auxiliary bag are independent inflatable cavities communicated through a connecting section, and in the length direction of the vehicle, the vertical distance between the lowest point of the front portion of the auxiliary bag and a cushion of the seat is smaller than the vertical distance between the lowest point of the rear portion of the auxiliary bag and the cushion of the seat, so that a protrusion is formed to limit forward displacement of a passenger. By arranging the main bag and the auxiliary bag which can be independently inflated, when the side air bag is inflated and unfolded, the front portion of the auxiliary bag is lower than the rear portion of the auxiliary bag, so that a protruding portion attached to the shoulder and / or the chest of a passenger is formed on the front portion of the auxiliary bag, the protruding portion can play a role in restraining, and effective support is provided for forward or oblique forward displacement of the passenger.

Description

Technical Field

[0001] This specification relates to the technical field of vehicle safety, and particularly to a vehicle side airbag and a vehicle. Background Art

[0002] The vehicle side airbag is an important part of the vehicle safety system, providing key auxiliary protection for passengers during a side collision. When the vehicle is subjected to a side collision, the side airbag will deploy to protect the main driver and / or the co-driver. Currently, the general vehicle side airbag can only achieve side protection for the main driver and / or the co-driver. When the main driver has a tendency to move forward, it is difficult for the side airbag to play a restraining role. Summary of the Invention

[0003] In view of this, the embodiments of this specification provide a vehicle side airbag and a vehicle. By providing a separately inflatable main airbag and a secondary airbag, when the side airbag is inflated and deployed, the front part of the secondary airbag is lower than the rear part, so that a protrusion that fits the shoulder and / or chest of the main driver is formed at the front part of the secondary airbag. The protrusion can play a restraining role for the main driver and provide effective support for the forward or obliquely forward displacement of the main driver.

[0004] The embodiments of this specification provide the following technical solutions: A vehicle side airbag for protecting the main driver and / or the co-driver, the side airbag includes a main airbag fixed to the side of the seat and extending to the occupant's torso area, and a secondary airbag extending from the main airbag to the occupant's head area. The main airbag and the secondary airbag are separately inflatable chambers connected by a connecting section.

[0005] Along the length direction of the vehicle, the vertical distance between the lowest point of the front part of the secondary airbag and the seat cushion is less than the vertical distance between the lowest point of the rear part of the secondary airbag and the seat cushion, so as to form a protrusion that can limit the forward displacement of the occupant.

[0006] Preferably, along the length direction of the vehicle, the vertical distance between the highest point of the front part of the secondary airbag and the seat cushion is less than the vertical distance between the highest point of the rear part of the secondary airbag and the seat cushion.

[0007] Preferably, the connecting section is a closed suture, and the width of the connecting section at the front part of the secondary airbag is greater than the width of the connecting section at the rear part of the secondary airbag.

[0008] Preferably, the main airbag includes a first panel and a second panel connected to each other along a first outer peripheral line. The auxiliary airbag is formed by folding a third panel along a first folding line and then sewing the edges along a second outer peripheral line. The connecting section is close to and / or crosses the bottom of the first folding line to connect the auxiliary airbag to a side panel of the main airbag close to the occupant of the seat. The connecting section is also configured with a through hole disposed within the closed suture line to communicate the main airbag and the auxiliary airbag.

[0009] Preferably, the closed suture line is in the shape of a right triangle, including a first right-angled side attached below the first folding line, a second right-angled side close to the front in the vehicle length direction, and a hypotenuse, and arc segments are formed at the corners.

[0010] Preferably, the first folding line is the middle line in the height direction of the third panel. After the upper part of the first folding line is turned down, the second outer peripheral line is sewn.

[0011] Preferably, when viewed from the front of the vehicle, the included angle A between the second outer peripheral line at the front of the auxiliary airbag and the surface contour of the main airbag is smaller than the included angle B between the second outer peripheral line at the rear of the auxiliary airbag and the surface contour of the main airbag. The protrusion is used to restrain the shoulder and / or head area of the occupant.

[0012] Preferably, a non-inflatable area and an external strap are provided on the main airbag. The non-inflatable area is placed within the projection area of the connecting section. When the side airbag is inflated and deployed, the external strap pulls the main airbag to bend at the non-inflatable area to form an upper cavity and a lower cavity extending at an angle to each other. The upper cavity extends away from the auxiliary airbag and interacts with the lower cavity and the external strap to support the auxiliary airbag.

[0013] Preferably, the non-inflatable area extends in the vehicle front-rear direction and is formed by a single-layer closed suture line sewing the first panel, the second panel, and the third panel. The through hole is located below the non-inflatable area.

[0014] A vehicle includes a driver's seat, a passenger seat, a gas generator, and a vehicle side airbag as described in any one of the above. The gas generator and the vehicle side airbag are both installed on the side of the driver's seat close to the passenger seat. The gas outlet of the gas generator is communicated with the main airbag.

[0015] Compared with the prior art, the beneficial effects that can be achieved by at least one of the above technical solutions adopted in the embodiments of this specification at least include:

[0016] By providing a separately inflatable main airbag and auxiliary airbag, when the side airbag inflates and deploys, the front part of the auxiliary airbag is lower than the rear part, so that a protrusion that fits the shoulders and / or chest of the main driver and passenger is formed at the front part of the auxiliary airbag. The protrusion can restrain the main driver and passenger and provide effective support for the forward or obliquely forward displacement of the main driver and passenger. Description of the Drawings

[0017] To more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 is a schematic structural diagram of the side airbag after deployment when the co-pilot side of the vehicle of the present application is impacted;

[0019] Figure 2 is a schematic structural diagram of the side airbag after deployment when the driver side of the vehicle of the present application is impacted;

[0020] Figure 3 is a schematic structural diagram of the side airbag after deployment of the vehicle of the present application;

[0021] Figure 4 is a schematic structural diagram of the connection between the auxiliary airbag and the main airbag after the side airbag of the vehicle of the present application is deployed;

[0022] Figure 5 is a schematic diagram of the sewing process of each panel of the main airbag and the auxiliary airbag of the side airbag of the vehicle of the present application;

[0023] Figure 6 The left figure is a schematic diagram after the sewing of each panel of the main airbag and the auxiliary airbag is completed, and the right figure is a cross-sectional view taken along line A-A in the left figure.

[0024] In the figure, 1, main airbag; 101, lower cavity; 102, upper cavity; 2, auxiliary airbag; 201, protrusion; 3, external pull belt; 4, first panel; 5, connection section; 51, closed sewing line; 511, first right-angled side; 512, second right-angled side; 513, hypotenuse; 6, third panel; 7, non-inflatable area; 71, closing sewing line; 8, through hole; 9, first outer peripheral line; 10, second outer peripheral line; 11, first folding line; 12, second panel. Detailed Embodiments

[0025] The embodiments of the present application will be described in detail below with reference to the drawings.

[0026] The following describes the embodiments of the present application through specific examples. Those skilled in the art can easily understand the other advantages and effects of the present application from the content disclosed in this specification. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all embodiments. The present application can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, without conflict, the following embodiments and the features in the embodiments can be combined with each other. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts belong to the scope of protection of the present application.

[0027] It should be noted that the following describes various aspects of the embodiments within the scope of the appended claims. It should be obvious that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is merely illustrative. Based on the present application, those skilled in the art should understand that one aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspects described herein can be used to implement the device and / or practice the method. Additionally, this device and / or this method can be implemented using other structures and / or functionality in addition to one or more of the aspects described herein.

[0028] It should also be noted that the diagrams provided in the following embodiments only illustrate the basic concept of the present application in a schematic manner. The diagrams only show the components related to the present application, rather than being drawn according to the number, shape, and size of the components in actual implementation. The type, quantity, and proportion of each component in actual implementation can be arbitrarily changed, and the component layout type may also be more complex.

[0029] In addition, in the following description, specific details are provided to facilitate a thorough understanding of the examples. However, those skilled in the art will understand that the described aspects can be practiced without these specific details.

[0030] The vehicle side airbag is an important part of the automotive safety system, providing key auxiliary protection for passengers during a side collision. When the vehicle is subjected to a side collision, the side airbag will deploy to protect the main driver and / or the co-driver. The currently common vehicle side airbags have the following problems:

[0031] 1. Generally, after the side airbag deploys, it can only achieve side protection for the main driver. When the main driver has a tendency to move forward, it is difficult for the side airbag to play a restraining role.

[0032] 2. When the co - driver is tall, the protection effect on the co - driver's head is poor.

[0033] After extensive and in - depth experiments, the inventor designed a vehicle side airbag.

[0034] The following combines the accompanying drawings to illustrate the technical solutions provided by the embodiments of the present application.

[0035] As Figures 1 - 3 shown, a vehicle side airbag is used to protect the driver and / or co - driver. The side airbag includes a main airbag 1 fixed to the side of the seat and extending to the occupant's torso area, and a secondary airbag 2 extending from the main airbag 1 to the occupant's head area. The main airbag 1 and the secondary airbag 2 are separate inflatable chambers connected by a connecting section 5.

[0036] Along the length direction of the vehicle, the vertical distance between the lowest point a at the front of the secondary airbag 2 and the seat cushion is less than the vertical distance between the lowest point b at the rear of the secondary airbag 2 and the seat cushion, so as to form a protrusion 201 that can limit the forward displacement of the occupant.

[0037] By setting up a separately inflatable main airbag 1 and secondary airbag 2 to form a side airbag, the main airbag 1 and the secondary airbag 2 are connected by a connecting section 5. When the passenger side of the vehicle is laterally impacted, the driver moves towards the co - driver's side under the action of inertia. The side airbag inflates and deploys, and the main airbag 1 and the secondary airbag 2 cooperate with each other to protect the driver. The front part of the deployed secondary airbag 2 is lower than the rear part, so that a protrusion 201 that fits the driver's shoulder and / or chest is formed at the front of the secondary airbag 2. The protrusion 201 can play a role in restraining the driver, providing effective support for the driver's forward or obliquely forward displacement, and preventing the driver from moving towards the steering wheel.

[0038] It should be noted that at least a part of the front side of the deployed secondary airbag 2 extends to the area below the headrest of the vehicle driver's seat to ensure that it can restrain the driver's shoulder and / or chest.

[0039] As Figure 2 shown, in some embodiments, along the length direction of the vehicle, the vertical distance between the highest point c at the front of the secondary airbag 2 and the seat cushion is less than the vertical distance between the highest point d at the rear of the secondary airbag 2 and the seat cushion, so as to achieve the support for the co - driver's head. The highest point at the rear of the deployed secondary airbag 2 is higher than the highest point at the front. When the driver's side of the vehicle is impacted, the co - driver moves towards the driver's side under the action of inertia. When the co - driver is tall, due to the higher rear part of the secondary airbag 2, it can still provide good protection for the co - driver's head. Therefore, it can well accommodate the head protection of occupants of different heights.

[0040] It should be noted that at least a part of the rear side of the auxiliary airbag 2 extends above the headrest of the driver's seat of the vehicle to ensure that the head of a relatively tall passenger in the co-pilot can be protected.

[0041] As Figure 5 shown, in some embodiments, the connecting section 5 is a closed suture, and the width of the connecting section 5 at the front of the auxiliary airbag 2 is greater than the width of the connecting section 5 behind the side airbag. By adopting a closed suture to form the connecting section 5, the connecting section 5 forms a shape with a wider front and a narrower rear on the auxiliary airbag 2. By using this sewing method to connect the auxiliary airbag 2 and the main airbag 1, it can ensure that the auxiliary airbag 2 forms a state with a lower front and a higher rear after deployment.

[0042] As Figure 5 shown, in some embodiments, the main airbag 1 includes two first panels 4 and a second panel 12 connected to each other along a first outer peripheral line 9. The auxiliary airbag 2 is formed by folding a single third panel 6 along a first folding line 11 and then sewing the edges along a second outer peripheral line 10. The connecting section 5 is close to and / or crosses the first folding line 11 to connect the auxiliary airbag 2 to a side panel of the main airbag 1 close to the occupant of the seat. The connecting section 5 is also configured with through holes 8 provided in the closed suture to communicate the main airbag 1 and the auxiliary airbag 2. By using the first outer peripheral line 9 to sew between the edges of two independent first panels 4 and the second panel to form the main airbag 1, and then folding a third panel 6 along the first folding line 11 and sewing the edges along the second outer peripheral line 10 to form the auxiliary airbag 2, the connecting section 5 is on a side panel near the panel folding part of the auxiliary airbag 2. When the side airbag is deployed, the edge and / or the vicinity of the edge of the auxiliary airbag 2 is connected to the main airbag 1 to ensure the supporting effect of the main airbag 1 on the auxiliary airbag 2. The through holes 8 are provided in the area formed by the connecting section 5 to ensure that the gas in the main airbag 1 can enter the auxiliary airbag 2 through the through holes 8.

[0043] It should be noted that a plurality of through holes 8 are provided, and the number of through holes 8 near the first side of the connecting section 5 is greater than the number of through holes 8 near the second side of the connecting section 5. By providing a plurality of through holes 8 in the connecting section 5, the gas can enter the auxiliary airbag 2 from multiple parts, which can ensure that the gas in the main airbag 1 quickly enters the auxiliary airbag 2, ensure the deployment speed of the auxiliary airbag 2, and enable the auxiliary airbag 2 to deploy quickly.

[0044] It should also be noted that in other embodiments, the auxiliary airbag 2 can also be sewn by two independent panels and can be selected according to actual situations.

[0045] In some embodiments, the closed suture 51 is in the shape of a right triangle, including a first right side 511 attached below the first folding line 11, a second right side 512 near the front in the vehicle length direction, and a hypotenuse 513, and arc segments are formed at the corners. The closed suture is in the shape of a right triangle, so that the connecting section 5 is wider at the front and narrower at the rear. The horizontal side (the first right side 511) of the closed suture 51 is parallel to the suture at the top or bottom edge of the sub-bag 2, and the vertical side (the second right side 512) of the closed suture 51 is parallel to the side of the sub-bag 2. The vertical side is below the horizontal side, so that the hypotenuse 513 of the closed suture 51 is also below the horizontal side, ensuring that the sub-bag 2 will present a state of being lower at the front and higher at the rear when deployed.

[0046] In some embodiments, the first folding line 11 is the middle line in the height direction of the third panel. After the upper part of the first folding line 11 is folded downward, the second outer peripheral line is sewn. Along the height direction of the third panel, the first folding line 11 is at the middle line position of the third panel, ensuring that the folded third panel can be completely attached. The connecting section is below the first folding line 11, ensuring that the upper part of the third panel will not be affected by the connecting section when folded downward.

[0047] As Figures 3 - 4 shown, in some embodiments, when viewed from the front of the vehicle, the angle A between the second outer peripheral line 10 at the front of the sub-bag 2 and the surface contour of the main bag 1 is smaller than the angle B between the second outer peripheral line 10 at the rear of the sub-bag 2 and the surface contour of the main bag 1. The protrusion is used to restrain the shoulder and / or head area of the occupant. When the side airbag is deployed, when viewed from the front of the vehicle, the angle A between the suture at the front edge of the sub-bag 2 and the surface contour of the main bag 1 is smaller than the angle B between the suture at the rear edge of the sub-bag 2 and the surface contour of the main bag 1, and the sub-bag 2 is in a state of being lower at the front and higher at the rear.

[0048] As Figures 3 - 4As shown, in some embodiments, a non-inflatable area 7 and an external strap 3 are provided on the main airbag 1. The non-inflatable area 7 is located within the projection area of the connection section 5. When the side airbag is inflated and deployed, the external strap 3 pulls the main airbag 1 to bend at the non-inflatable area 7 to form an upper cavity 102 and a lower cavity 101 that extend at an angle to each other. The upper cavity 102 extends away from the secondary airbag 2 and interacts with the lower cavity 101 and the external strap 3 to support the secondary airbag 2. An acute angle is formed between the upper cavity 102 and the lower cavity 101, and an obtuse angle is formed between the secondary airbag 2 and the upper cavity 102, so that the main airbag 1 and the secondary airbag 2 support each other. When the main airbag 1 is inflated and deployed, the two ends of the external strap 3 respectively pull different parts of the main airbag 1, causing the main airbag 1 to bend. By providing the non-inflatable area 7 on the main airbag 1, due to the existence of the non-inflatable area 7, the main airbag 1 can be bent along the non-inflatable area 7, facilitating the bending of the main airbag 1 after deployment. At the same time, the gas in the main airbag 1 will enter the secondary airbag 2 through the through hole 8. The secondary airbag 2 extends and unfolds away from the main airbag 1. An obtuse angle is formed between the unfolded secondary airbag 2 and the upper cavity 102 and / or the lower cavity 101, so that the main airbag 1 and the secondary airbag 2 support each other, ensuring the support effect of the main airbag 1 on the secondary airbag 2.

[0049] As Figures 5 - 6 shown, in some embodiments, the non-inflatable area extends in the vehicle's front-rear direction and is formed by a single-layer closed stitch line 71 that stitches the first panel 4, the second panel 12, and the third panel 6. The through hole 8 is located below the non-inflatable area. The non-inflatable area 7 extending in the vehicle's front-rear direction facilitates the folding of the main airbag 1 along the width direction. The formation of the first panel 4, the second panel 12, and the third panel 6 of the main airbag 1 is fixed by sewing with the closed stitch line 71, and the through hole 8 is below the non-inflatable area 7, facilitating the rapid entry of the gas in the main airbag 1 into the secondary airbag 2.

[0050] It should be noted that generally, the non-inflatable area 7 can be formed by a sealed stitch line, that is, a closed area is sewn out by a sealed stitch line. In other embodiments, it can also be formed by gluing or other means, as long as it is ensured that gas is difficult to enter or can only enter the area in a relatively slow manner.

[0051] Please refer to Figures 1 - 5, based on the same inventive concept, an embodiment of this specification provides a vehicle, including a driver's seat, a passenger seat, a gas generator, and the vehicle side airbag described in any one of the above. Both the gas generator and the vehicle side airbag are installed on the side of the driver's seat close to the passenger seat. The gas outlet of the gas generator is communicated with the lower cavity 101. By adopting the above vehicle side airbag, when the passenger side of the vehicle is laterally impacted, the front part of the deployed secondary airbag 2 is lower than the rear part, so that a protrusion 201 that fits the shoulder and / or chest of the main occupant is formed at the front part of the secondary airbag 2. The protrusion 201 can play a role in restraining the main occupant and prevent the main occupant from moving forward; when the driver's side of the vehicle is impacted, when the passenger is relatively tall, since the rear part of the secondary airbag 2 is higher, it can still provide good protection for the head of the passenger. Therefore, it can well accommodate the head protection of occupants of different heights.

[0052] For the various embodiments in this specification, the same or similar parts can be referred to each other. Each embodiment focuses on the differences from other embodiments. In particular, for the method embodiments described later, since they correspond to the system, the description is relatively simple, and the relevant parts can be referred to the partial description of the system embodiments.

[0053] The above is only the specific implementation manner of this application, but the protection scope of this application is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed in this application should be covered by the protection scope of this application. Therefore, the protection scope of this application should be subject to the protection scope of the claims.

Claims

1. A vehicle side airbag for protecting a driver and / or a front passenger, the side airbag comprising a main bag fixed to a seat side and extending to the torso area of ​​the passenger and a secondary bag extending from the main bag to the head area of ​​the passenger, the main bag and the secondary bag being separate inflatable chambers connected by a connecting section, characterized in that: Along the length direction of the vehicle, a vertical distance between the lowest point of the front of the auxiliary bag and the seat cushion is smaller than a vertical distance between the lowest point of the rear of the auxiliary bag and the seat cushion, so that a protrusion is formed to limit forward displacement of an occupant.

2. The vehicle side airbag according to claim 1, characterized in that: Along the length direction of the vehicle, a vertical distance between a highest point of the front portion of the auxiliary bag and the seat cushion of the seat is smaller than a vertical distance between a highest point of the rear portion of the auxiliary bag and the seat cushion of the seat.

3. The vehicle side airbag according to claim 1, characterized in that: The connection section is a closed stitch, and the width of the connection section at the front of the auxiliary airbag is greater than the width of the connection section at the rear of the auxiliary airbag.

4. The vehicle side airbag according to claim 3, characterized in that: The main bag includes a first panel and a second panel connected to each other along a first outer peripheral line, and the secondary bag is formed by folding a third panel along a first folding line and sewing the edges through a second outer peripheral line. The connecting section connects the secondary bag to a side panel of the main bag close to the seat occupant near and / or across the first folding line, and the connecting section is also configured with a through hole provided in the closed seam to connect the main bag and the secondary bag.

5. The vehicle side airbag according to claim 4, characterized in that: The closed seam is in the shape of a right triangle, including a first right-angled side below the first folding line, a second right-angled side near the front in the length direction of the vehicle, and a hypotenuse, and arc segments are formed at the corners.

6. The vehicle side airbag according to claim 5, characterized in that: The first folding line is the middle line of the third panel in the height direction, and the upper part of the first folding line is folded downward and then sewn to the second outer peripheral line.

7. The vehicle side airbag according to claim 4, characterized in that: Observed from the front of the vehicle, an angle A between the second outer periphery of the front of the auxiliary bag and the surface contour of the main bag is smaller than an angle B between the second outer periphery of the rear of the auxiliary bag and the surface contour of the main bag, and the protrusion is used to restrain the shoulder and / or head area of ​​the occupant.

8. The vehicle side airbag according to any one of claims 4 to 7, characterized in that: The main bag is provided with a non-inflatable area and an external drawstring, and the non-inflatable area is placed within the projection area of ​​the connecting section. When the side airbag is inflated and deployed, the external drawstring pulls the main bag to bend in the non-inflatable area to form an upper cavity and a lower cavity extending at angles to each other. The upper cavity extends away from the auxiliary bag, and interacts with the lower cavity and the external drawstring to support the auxiliary bag.

9. The vehicle side airbag according to claim 8, characterized in that: The non-inflatable area extends in the front-rear direction of the vehicle and is formed by a single-layer closed seam of sewing the first panel, the second panel and the third panel, and the through hole is located below the non-inflatable area.

10. A vehicle, characterized in that: It includes a driver's seat, a passenger seat, a gas generator and a vehicle side airbag as described in any one of claims 1 to 9, wherein the gas generator and the vehicle side airbag are both installed on a side of the driver's seat close to the passenger seat, and the gas generator outlet is connected to the main bag.

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