Side air bag device
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.
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.