Side airbag device, vehicle seat and vehicle

Abstract

The utility model relates to a side airbag device, a vehicle seat and a vehicle. The side safety air bag device comprises a first air bag part and a second air bag part connected with the first air bag part, the first air bag part is used for protecting the head of a passenger after being expanded and unfolded, the second air bag part is used for protecting the trunk of the passenger after being expanded and unfolded, and the first air bag part is provided with a retaining structure. The retaining structure is used to constrain forward slippage of the head. According to the technical scheme, the first air bag part is provided with the retaining structure, and the retaining structure is used for restraining the forward sliding of the head, so that the head is always kept in the protection area of the air bag, the head is prevented from colliding with the interior trim of the vehicle due to the forward sliding, and the risk of craniocerebral injury is reduced.

Description

Technical Field

[0001] This disclosure relates to the field of vehicle safety technology, specifically to a side airbag device, a vehicle seat, and a vehicle. Background Technology

[0002] With the upgrading of global automotive safety performance requirements, the protection of occupants at the far end in side collisions has become one of the core objectives of passive safety design. Existing side airbag systems can usually provide safety protection for the occupant's torso, but neglect to provide sufficient protection for the occupant's head. In the event of a collision, after the occupant's head comes into contact with the airbag, it is easy to slide forward along the surface and leave the protected area, causing the occupant's head to impact with hard points inside the vehicle, increasing the risk of traumatic brain injury. Utility Model Content

[0003] To overcome the problems existing in the related technologies, this disclosure provides a side airbag device, a vehicle seat, and a vehicle.

[0004] According to a first aspect of the present disclosure, a side airbag device is provided, the side airbag device including a first airbag portion and a second airbag portion connected to the first airbag portion, the first airbag portion being used to protect the head of an occupant after inflating and deploying, and the second airbag portion being used to protect the torso of an occupant after inflating and deploying, wherein the first airbag portion is provided with a retaining structure for restraining forward sliding of the head.

[0005] Optionally, the second airbag portion has two sides facing the occupants on both sides respectively, the first airbag portion is connected to one side of the second airbag portion, and the first airbag portion and the second airbag portion are formed in an inverted L-shaped expansion and deployment shape.

[0006] Optionally, the retaining structure is configured as a recessed region that is recessed inward toward the interior of the first airbag portion, and the bottom of the recessed region is an arc-shaped surface.

[0007] Optionally, the radius of curvature of the recessed region ranges from 200 mm to 300 mm.

[0008] Optionally, after the second airbag is inflated, it has a preset thickness in the left-right direction of the vehicle. The preset thickness is configured to form a non-compressive contact with the occupant. The second airbag is provided with a limiting strap inside, and the preset thickness is limited by the length of the limiting strap.

[0009] Optionally, the preset thickness ranges from 70 mm to 130 mm.

[0010] Optionally, the first airbag portion is formed by sewing opposing first and second fabrics along the outer periphery; the second airbag portion is formed by sewing opposing third and fourth fabrics along the outer periphery, with one end of the limiting pull strap connected to the third fabric and the other end of the limiting pull strap connected to the fourth fabric.

[0011] Optionally, the limiting strap is sewn inside the second airbag portion.

[0012] According to a second aspect of the present disclosure, a vehicle seat is provided, including a seat body and a side airbag device of any one of the above, the side airbag device being disposed on the side of the seat body.

[0013] According to a third aspect of the present disclosure, a vehicle is provided, including two vehicle seats spaced apart along the width of the vehicle, wherein the vehicle seats are any of the vehicle seats described above, and the side airbag device, after inflating and deploying, is located between the two vehicle seats.

[0014] The technical solutions provided by the embodiments of this disclosure may include the following beneficial effects: The side airbag device provided by this disclosure includes a first airbag portion for protecting the head and a second airbag portion for protecting the torso, which is beneficial to provide all-round protection for occupants when a side collision occurs. The first airbag portion is provided with a retaining structure, which is used to restrain the forward sliding of the head, thereby keeping the head always within the protection area of ​​the airbag, avoiding impact with hard points inside the vehicle caused by the forward sliding of the head, and reducing the risk of traumatic brain injury.

[0015] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0016] The accompanying drawings are provided to further understand the present disclosure and form part of the specification. They are used together with the following detailed description to explain the present disclosure, but do not constitute a limitation thereof.

[0017] Figure 1 This is a schematic diagram illustrating airbag protection in a side collision according to an exemplary embodiment of this disclosure.

[0018] Figure 2 This is a schematic diagram of the deployment of a side airbag device provided in an exemplary embodiment of this disclosure.

[0019] Figure 3 This is a schematic diagram of the side airbag device cutter shape design provided in an exemplary embodiment of this disclosure.

[0020] Explanation of reference numerals in the attached figures

[0021] 1-First airbag section, 11-Retaining structure, 111-Recessed area, 121-First fabric, 122-Second fabric, 2-Second airbag section, 211-First side, 212-Second side, 22-Limiting strap, 231-Third fabric, 232-Fourth fabric, 100-Side airbag device, 200-Seat body. Detailed Implementation

[0022] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0023] Unless otherwise stated, directional terms such as "upper," "lower," "left," and "right" are defined according to the directions indicated in the corresponding drawings, while "inner" and "outer" refer to the inner and outer contours of the corresponding component itself. Furthermore, the terms "first," "second," etc., used in this disclosure are for distinguishing one element from another and do not imply sequentiality or importance.

[0024] like Figures 1 to 3 The present disclosure provides a side airbag device 100, which can be used to provide lateral remote protection for occupants. That is, the side airbag device 100 is used to limit the movement of the driver to the passenger side and reduce impact damage in a side collision of a vehicle.

[0025] Specifically, the side airbag device 100 provided in this disclosure includes a first airbag section 1 and a second airbag section 2 connected to the first airbag section 1. The side airbag device 100 can receive gas generated by a gas generating device and inflate to deploy, thereby protecting the occupant. The first airbag section 1 protects the occupant's head after inflating, and the head may consist only of the head or include both the head and neck. The second airbag section 2 protects the occupant's torso, including the shoulders and ribs, after inflating. By separately providing the first airbag section 1 and the second airbag section 2, all-around protection can be provided to the occupant in the event of a side collision.

[0026] The first airbag portion 1 is provided with a retaining structure 11, which restrains the forward slippage of the head. Forward slippage refers to the relative displacement of the occupant's head along the airbag surface in the forward direction (i.e., the vehicle's direction of travel) after contact with the airbag, due to inertia or insufficient airbag restraint. If the airbag fails to effectively absorb impact energy or the contact area is insufficient, the head may slip off the edge of the airbag and impact hard points inside the vehicle, such as the dashboard and windows, leading to more severe head injuries. The side airbag device 100 provided in this disclosure, by providing a retaining structure 11 in the first airbag portion 1 to restrain the forward slippage of the head, keeps the head within the airbag's protection area, preventing impacts with hard points inside the vehicle caused by forward slippage and reducing the risk of head injury.

[0027] In some possible implementations, such as Figure 1 As shown, the second airbag portion 2 has two side portions facing the occupants on both sides respectively. The first airbag portion 1 is connected to one side portion of the second airbag portion 2. The first airbag portion 1 and the second airbag portion 2 are formed in an inverted L-shaped expansion and deployment configuration. Referring to the accompanying drawings, the second airbag portion 2 includes opposing first side portions 211 and second side portions 212, with the first airbag portion 1 connected to one of the first side portions 211 and second side portions 212. For example, as... Figure 1 As shown, the first side portion 211 faces the passenger side, and the second side portion 212 faces the driver side. The first airbag portion 1 is located on the second side portion 212. With this L-shaped deployment configuration, when a side impact occurs, the driver's side contacts the first airbag portion 1, and the passenger's side contacts the second airbag portion 2, thus preventing a head-to-head collision between the driver and passenger.

[0028] This disclosure does not limit the implementation of the retaining structure 11; any structure or method capable of constraining the forward sliding of the head can be applied to this disclosure. In some possible implementations, such as... Figure 2 and Figure 3 As shown, the retaining structure 11 is configured as a recessed region 111 that is recessed inward toward the first airbag portion 1, and the bottom of the recessed region 111 is an arc-shaped surface. The arc-shaped bottom surface facilitates the geometric adaptation of the contact surface between the head and the first airbag portion 1, increases the contact area, and improves the restraint effect on the forward sliding of the head. The range of the radius of curvature of the recessed region 111 can be optimized according to the size of the head and neck of the target population. Optionally, the radius of curvature of the recessed region 111 can be in the range of 200 mm to 300 mm. Limiting the radius of curvature of the recessed region 111 to a reasonable range helps to further improve the reliability of the restraint on the forward sliding of the head.

[0029] In related technologies, after the airbag inflates and deploys, the compression of the occupant's shoulders and ribs pushes the occupant towards the side of the impact, potentially increasing the risk of injury. To address this technical problem, this disclosure discloses, in some possible embodiments, that the second airbag portion 2, after inflating and deploying, has a preset thickness in the lateral direction of the vehicle. This preset thickness is configured to form a non-compressive contact with the occupant. Optionally, the preset thickness can range from 70 mm to 130 mm. Because there is no non-compressive contact between the second airbag portion 2 and the occupant, after the second airbag portion 2 inflates and deploys in a collision, the compression of the occupant's torso can be reduced, while avoiding pushing the occupant towards the side of the impact, thereby reducing the risk of injury to the occupant. The second airbag portion 2 is internally provided with a limiting strap 22, and the preset thickness is limited by the length of the limiting strap 22. Specifically, during deployment, the second airbag portion 2 cannot inflate to its maximum volume due to the limitation of the limiting strap 22, but is instead limited to the preset thickness by the length of the limiting strap 22. The limiting strap 22 can be sewn inside the second airbag part 2, which helps to improve the connection strength between the limiting strap 22 and the second airbag part 2, thereby improving the reliability of limiting the second airbag part 2 to a preset thickness after it is expanded.

[0030] In other embodiments, the predetermined thickness of the second airbag 2 after expansion can be limited by a flexible cover disposed outside the second airbag 2. Alternatively, it can be limited by a suture method, i.e., multiple parallel sutures are provided on the surface of the airbag, and the spacing between adjacent sutures directly limits the local expansion thickness. Or, a pre-formed folding method can be used, i.e., a fixed pleated structure is formed by a pre-folding process, so that the airbag preferentially extends in a predetermined direction when it expands, thereby suppressing excessive expansion in non-target directions. This disclosure will not elaborate further on these aspects.

[0031] In some possible implementations, such as Figure 3 As shown, the first airbag part 1 is formed by sewing opposing first fabric 121 and second fabric 122 along its outer periphery; the second airbag part 2 is formed by sewing opposing third fabric 231 and fourth fabric 232 along its outer periphery. A limiting strap 22 connects one end to the third fabric 231 and the other end to the fourth fabric 232, thereby limiting the thickness of the second airbag part 2 in the left-right direction of the vehicle after it expands and deploys. Its structure is simple and low-cost, and can meet the basic buffering protection function in conventional collision scenarios. Furthermore, to further improve the buffering effect and increase the expanded volume, it can also be made of multiple pieces of fabric sewn together.

[0032] According to a second aspect of the present disclosure, a vehicle seat is also provided, including a seat body 200 and a side airbag device 100 of any of the above, and having all the beneficial effects thereof, wherein the side airbag device 100 is disposed on the side of the seat body 200.

[0033] According to a third aspect of the present disclosure, a vehicle is also provided, including two vehicle seats spaced apart along the width of the vehicle, the vehicle seats being any of the vehicle seats described above, wherein a side airbag device 100, after inflating and deploying, is located between the two vehicle seats, thereby effectively protecting occupants on both sides of the vehicle.

[0034] The preferred embodiments of this disclosure have been described in detail above with reference to the accompanying drawings. However, this disclosure is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this disclosure, various simple modifications can be made to the technical solutions of this disclosure, and these simple modifications all fall within the protection scope of this disclosure.

[0035] It should also be noted that the various specific technical features described in the above embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, this disclosure will not describe the various possible combinations separately.

[0036] Furthermore, various different embodiments of this disclosure can be combined in any way, as long as they do not violate the spirit of this disclosure, they should also be regarded as the content disclosed in this disclosure.

Claims

1. A side airbag device, characterized in that, The side airbag device includes a first airbag section and a second airbag section connected to the first airbag section. The first airbag section is used to protect the occupant's head after inflation and deployment, and the second airbag section is used to protect the occupant's torso after inflation and deployment. The first airbag section is provided with a retaining structure, which is used to restrain the forward sliding of the head.

2. The side airbag device according to claim 1, characterized in that, The second airbag portion has two sides facing the occupants on both sides respectively, and the first airbag portion is connected to one side of the second airbag portion. The first airbag portion and the second airbag portion are formed in an inverted L-shaped expansion and deployment shape.

3. The side airbag device according to claim 1, characterized in that, The retaining structure is configured as a recessed region that is recessed inward toward the interior of the first airbag portion, and the bottom of the recessed region is a curved surface.

4. The side airbag device according to claim 3, characterized in that, The radius of curvature of the recessed region ranges from 200 mm to 300 mm.

5. The side airbag device according to any one of claims 1 to 4, characterized in that, After the second airbag is inflated, it has a preset thickness in the left-right direction of the vehicle. The preset thickness is configured to form a non-compressive contact with the occupant. The second airbag is provided with a limiting strap inside, and the preset thickness is limited by the length of the limiting strap.

6. The side airbag device according to claim 5, characterized in that, The preset thickness ranges from 70 mm to 130 mm.

7. The side airbag device according to claim 5, characterized in that, The first airbag portion is formed by sewing a first fabric and a second fabric together along the outer periphery; the second airbag portion is formed by sewing a third fabric and a fourth fabric together along the outer periphery, and one end of the limiting pull strap is connected to the third fabric, and the other end of the limiting pull strap is connected to the fourth fabric.

8. The side airbag device according to claim 7, characterized in that, The limiting strap is sewn inside the second airbag section.

9. A vehicle seat, characterized in that, The device includes a seat body and a side airbag device as described in any one of claims 1-8, wherein the side airbag device is disposed on the side of the seat body.

10. A vehicle, characterized in that, The vehicle includes two vehicle seats spaced apart along the width of the vehicle, the vehicle seats being the vehicle seats as described in claim 9, wherein the side airbag device, after inflating and deploying, is located between the two vehicle seats.

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