Side air bag device

• US 10,604,102 B2
• Filed: 09/14/2017
• Issued: 03/31/2020
• Est. Priority Date: 07/14/2014
• Status: Active Grant

• Current Assignee: TS Tech Company Limited
• Original Assignee: TS Tech Company Limited
• Inventors: Tanabe, Jinichi, Hayashi, Kazuhiro
• Primary Examiner(s): Dickson, Paul N
• Assistant Examiner(s): Wilhelm, Timothy
• Application Number:
  US15/704,342
• Publication Number:
  US 20180001859A1
• Time in Patent Office: 929 Days
• CPC Class Codes: B60R 2021/2078 in rear seats
• CPC Class Codes: B60R 2021/2172 the cover being connected to the surrounding part and to the module, e.g. floating mounts
• CPC Class Codes: B60R 2021/23153 specially adapted for rear seat passengers
• CPC Class Codes: B60R 21/017 including arrangements for providing electric power to safety arrangements or their actuating means, e.g. to pyrotechnic fuses or electro-mechanic valves
• CPC Class Codes: B60R 21/207 in vehicle seats
• CPC Class Codes: B60R 21/215 characterised by the covers for the inflatable member B60R21/2176 takes precedence
• CPC Class Codes: B60R 21/217 Inflation fluid source retainers, e.g. reaction canisters; Connection of bags, covers, diffusers or inflation fluid sources therewith or together
• CPC Class Codes: B60R 21/2171 specially adapted for elongated cylindrical or bottle-like inflators with a symmetry axis perpendicular to the main direction of bag deployment, e.g. extruded reaction canisters B60R21/2176 takes precedence
• CPC Class Codes: B60R 21/23138 specially adapted for side protection B60R21/23184, B60R21/232 take precedence
• CPC Class Codes: B60R 21/2334 Expansion control features
• CPC Class Codes: B60R 21/26 characterised by the inflation fluid source or means to control inflation fluid flow arrangement or mounting thereof to the vehicle B60R21/20; blasting cartridges for producing gas under pressure in general F42B3/04; initiators or igniters therefor F42B3/10

Abstract

A side air bag device is described which is disposed in a space between a vehicle body and a back seat and for which rigidity of attachment to a vehicle body member is improved. The side air bag device provided between a vehicle body and a back seat includes: a base member including a base storage configured to store an air bag and an inflator and a base attachment portion attached to the vehicle body; and a retainer member configured to hold the base storage from a vehicle back side. The retainer member extends from a portion holding the base storage while being bent along the shape of the vehicle body. The retainer member is attached to the vehicle body together with the base attachment portion while being overlapped with the base attachment portion.

Claims

1. A side air bag device provided between a vehicle body and a back seat, comprising:

an expandable air bag;

an inflator configured to supply gas into the air bag;

a base member including a base storage, configured to store the air bag in a folded state and the inflator, the base member being attached between a vehicle body door and the back seat; and

a retainer member configured to hold the base storage from a vehicle back side;

wherein the retainer member comprises a side wall portion;

wherein a length in a front-to-rear direction of the side wall portion of a portion of the retainer member that is disposed in a rear of the base storage is larger than a length in the front-to-rear direction of the side wall portion of a lower portion of the retainer member;

wherein the side wall portion of the retainer member is disposed at a side of a boss provided in the base member;

wherein the retainer member comprises a fixing portion that is provided in the lower portion of the retainer member and fixed to the base member, and a protrusion that is provided on a back wall portion of the retainer member and has a side wall.

2. The side air bag device according to claim 1, wherein:

the retainer member comprises a curved portion that is concaved so that a frontmost surface of the curved portion is a bottom surface of a concave shape of the curved portion, and

the curved portion of the retainer member is arranged below a center of the retainer member in an up-to-down direction.

3. The side air bag device according to claim 1, wherein a lower end of the retainer member is arranged below a lower end of the base member in an up-to-down direction.

4. The side air bag device according to claim 1, wherein:

the retainer member comprises a curved portion that is concaved so that a frontmost surface of the curved portion is a bottom surface of a concave shape of the curved portion, and

the curved portion of the retainer member covers a part of the base storage from a back side.

5. The side air bag device according to claim 4, wherein:

the base storage comprises a deep recessed portion that is recessed toward a vehicle back side and a shallow recessed portion that is less recessed toward the vehicle back side than the deep recessed portion,

the retainer member comprises a curved portion that is concaved so that a frontmost surface of the curved portion is a bottom surface of a concave shape of the curved portion, and

the curved portion of the retainer member overlaps a portion of the shallow recessed portion in the base storage in the front-to-rear direction.

6. The side air bag device according to claim 1, wherein:

an opening is provided on a back side of the base member,

the side wall portion of the retainer member is a first side wall portion and the retainer member further comprise a second side wall portion, and

the first side wall portion and the second side wall portion are arranged respectively on both sides of the opening.

7. A side air bag device provided between a vehicle body and a back seat, comprising:

an expandable air bag;

an inflator configured to supply gas into the air bag;

a base member including a base storage, configured to store the air bag in a folded state and the inflator, the base member being attached between a vehicle body door and the back seat; and

a retainer member configured to hold the base storage from a vehicle back side;

wherein;

the retainer member comprises a side wall portion;

a length in a front-to-rear direction of the side wall portion of a portion of the retainer member that is disposed in a rear of the base storage is larger than a length in the front-to-rear direction of the side wall portion of a lower portion of the retainer member;

the retainer member is formed from a single member;

an opening is provided on a back side of the base member,

the side wall portion of the retainer member is a first side wall portion and the retainer member further comprise a second side wall portion, and

the first side wall portion and the second side wall portion are arranged respectively on both sides of the opening.

8. The side air bag device according to claim 7, wherein:

the retainer member comprises a curved portion that is concaved so that a frontmost surface of the curved portion is a bottom surface of a concave shape of the curved portion, and

the curved portion of the retainer member is arranged below a center of the retainer member in an up-to-down direction.

9. The side air bag device according to claim 7, wherein a lower end of the retainer member is arranged below a lower end of the base member in an up-to-down direction.

10. The side air bag device according to claim 7, wherein:

the retainer member comprises a curved portion that is concaved so that a frontmost surface of the curved portion is a bottom surface of a concave shape of the curved portion, and

the curved portion of the retainer member covers a part of the base storage from a back side.

11. The side air bag device according to claim 7, wherein:

the retainer member comprises a curved portion that is provided in the lower portion of the retainer member and concaved so that a frontmost surface of the curved portion is a bottom surface of a concave shape of the curved portion, and

the length in the front-to-rear direction of the side wall portion of the portion of the retainer member that is disposed in the rear of the base storage is larger than a length in the front-to-rear direction of the side wall portion of the curved portion of the retainer member.

12. The side air bag device according to claim 7, wherein:

the retainer member comprises a fixing portion that is provided in the lower portion of the retainer member and fixed to the base member, and

the length in the front-to-rear direction of the side wall portion of the portion of the retainer member that is disposed in the rear of the base storage is larger than a length in the front-to-rear direction of the side wall portion of the fixing portion of the retainer member.

13. The side air bag device according to claim 7, wherein:

the retainer member comprises a fixing portion that is provided in the lower portion of the retainer member and fixed to the base member, and a protrusion that is provided on a back wall portion of the retainer member and has a side wall, and

a length in the front-to-rear direction of the side wall of the protrusion is larger than a length in the front-to-rear direction of the side wall portion of the fixing portion of the retainer member.

14. The side air bag device according to claim 7, wherein:

the base storage comprises a deep recessed portion that is recessed toward a vehicle back side and a shallow recessed portion that is less recessed toward the vehicle back side than the deep recessed portion,

the retainer member comprises a curved portion that is concaved so that a frontmost surface of the curved portion is a bottom surface of a concave shape of the curved portion, and

the curved portion of the retainer member overlaps a portion of the shallow recessed portion in the base storage in the front-to-rear direction.

15. A side air bag device provided between a vehicle body and a back seat, comprising:

an expandable air bag;

an inflator configured to supply gas into the air bag;

a base member including a base storage, configured to store the air bag in a folded state and the inflator, the base member being attached between a vehicle body door and the back seat; and

a retainer member configured to hold the base storage from a vehicle back side;

wherein;

the retainer member comprises a side wall portion;

a length in a front-to-rear direction of the side wall portion of a portion of the retainer member that is disposed in a rear of the base storage is larger than a length in the front-to-rear direction of the side wall portion of a lower portion of the retainer member; and

the side air bag device is configured to be arranged at a side of a seat back of the back seat;

wherein;

the base storage comprises a deep recessed portion that is recessed toward a vehicle back side and a shallow recessed portion that is less recessed toward the vehicle back side than the deep recessed portion,

the retainer member comprises a curved portion that is concaved so that a frontmost surface of the curved portion is a bottom surface of a concave shape of the curved portion, and

the curved portion of the retainer member overlaps a portion of the shallow recessed portion in the base storage in the front-to-rear direction.

16. The side air bag device according to claim 15, wherein:

the retainer member comprises a curved portion that is provided in the lower portion of the retainer member and concaved so that a frontmost surface of the curved portion is a bottom surface of a concave shape of the curved portion, and

the length in the front-to-rear direction of the side wall portion of the portion of the retainer member that is disposed in the rear of the base storage is larger than a length in the front-to-rear direction of the side wall portion of the curved portion of the retainer member.

17. The side air bag device according to claim 15, wherein:

the retainer member comprises a fixing portion that is provided in the lower portion of the retainer member and fixed to the base member, and

the length in the front-to-rear direction of the side wall portion of the portion of the retainer member that is disposed in the rear of the base storage is larger than a length in the front-to-rear direction of the side wall portion of the fixing portion of the retainer member.

18. The side air bag device according to claim 15, wherein:

the retainer member comprises a fixing portion that is provided in the lower portion of the retainer member and fixed to the base member, and a protrusion that is provided on a back wall portion of the retainer member and has a side wall, and

a length in the front-to-rear direction of the side wall of the protrusion is larger than a length in the front-to-rear direction of the side wall portion of the fixing portion of the retainer member.

19. The side air bag device according to claim 15, wherein:

an opening is provided on a back side of the base member,

the side wall portion of the retainer member is a first side wall portion and the retainer member further comprise a second side wall portion, and

the first side wall portion and the second side wall portion are arranged respectively on both sides of the opening.

20. The side air bag device according to claim 15, wherein a lower end of the retainer member is arranged below a lower end of the base member in an up-to-down direction.