Occupant protection device
In an occupant protection device, an airbag disposed in a region of a lap belt of a seat belt includes a bag body and a conduit connected to an inflator disposed near a lower end of a seat portion of a seat. The airbag is held by the lap belt in a folded state. The conduit is disposed substantially along the lap belt while being held by a conduit holder. The conduit holder is formed of a material having flexibility and higher rigidity than the conduit, is disposed substantially along the conduit, and has both end sides fixed to a seat side and a bag body side, respectively, by a seat-side fixing portion or a bag body-side fixing portion.
1. An occupant protection device disposed on a seat of a vehicle, including:
a seat belt;
an airbag disposed in a region of a lap belt that restrains a waist of an occupant seated on the seat when the occupant wears the seat belt;
an inflator disposed at a position near a lower end of a seat portion of the seat and supplies an inflation gas to the airbag; and
a cover adapted to cover a periphery of the airbag,
the airbag having a bag shape formed of a flexible sheet, and including
a bag body that is held by the lap belt in a folded state and inflates to be able to protect the occupant wearing the seat belt, and
a conduit that is connected to the inflator to allow the inflation gas to flow into the bag body,
wherein
the conduit is disposed substantially along the lap belt in a state of being held by a conduit holder,
the conduit holder is formed of a material having flexibility and higher rigidity than the conduit, is disposed substantially along the conduit, and has both end sides fixed to a seat side and a bag body side, respectively by a seat-side fixing portion or a bag body-side fixing portion,
the cover includes a main cover and a conduit-side cover, the main cover is configured to cover an outer peripheral side of the folded bag body and a part of the lap belt, and the conduit-side cover is configured to cover an outer peripheral side of the conduit holder.
2. The occupant protection device according to claim 1 , wherein the airbag is held by the lap belt so as to be able to displace a folding completion body formed by folding the bag body with respect to the lap belt.
3. The occupant protection device according to claim 1 , wherein the conduit holder is formed of a substantial tube that is able to cover an outer peripheral side of the conduit.
4. The occupant protection device according to claim 3 , wherein the conduit holder is formed of a bellows tube made of synthetic resin.
5. The occupant protection device according to claim 3 , wherein the conduit holder is formed of a tube in which a mesh reinforcing layer is disposed over an entire circumference of a rubber-like elastic body as a base material.
6. The occupant protection device according to claim 2 ,
wherein
the seat-side fixing portion is attached to a position on a side of the seat portion via a position adjuster, and
the position adjuster is configured to be able to slide the seat-side fixing portion along a length direction of the conduit holder with respect to the seat portion.
7. The occupant protection device according to claim 1 ,
wherein
the airbag includes a belt loop through which the lap belt can be inserted, and
the bag body-side fixing portion is attached to the belt loop.
8. The occupant protection device according to claim 1 , wherein the seat belt and the inflator are mounted on a seat.
9. An occupant protection device disposed on a seat of a vehicle, comprising:
a seat belt;
an airbag disposed in a region of a lap belt that restrains a waist of an occupant seated on the seat when the occupant wears the seat belt;
an inflator disposed at a position near a lower end of a seat portion of the seat and supplies an inflation gas to the airbag; and
a cover adapted to cover a periphery of the airbag,
the airbag having a bag shape formed of a flexible sheet, and including
a bag body that is held by the lap belt in a folded state and inflates to be able to protect the occupant wearing the seat belt, and
a conduit that is connected to the inflator to allow the inflation gas to flow into the bag body,
wherein
the conduit is disposed substantially along the lap belt in a state of being held by a conduit holder, and
the conduit holder is formed of a material having flexibility and higher rigidity than the conduit, is formed of a substantial tube capable of covering an outer peripheral side of the conduit, and has at least one end side fixed to a seat side or a bag-body side,
the cover includes a main cover and a conduit-side cover, the main cover is configured to cover an outer peripheral side of the folded bag body and a part of the lap belt, and the conduit-side cover is configured to cover an outer peripheral side of the conduit holder.
10. The occupant protection device according to claim 9 , wherein the seat belt and the inflator are mounted on a seat.
11. The occupant protection device according to claim 9 , wherein the airbag is held by the lap belt so as to be able to displace a folding completion body formed by folding the bag body with respect to the lap belt.
12. The occupant protection device according to claim 9 , wherein the conduit holder is formed of a substantial tube that is able to cover an outer peripheral side of the conduit.
13. The occupant protection device according to claim 12 , wherein the conduit holder is formed of a bellows tube made of synthetic resin.
14. The occupant protection device according to claim 12 , wherein the conduit holder is formed of a tube in which a mesh reinforcing layer is disposed over an entire circumference of a rubber-like elastic body as a base material.
15. An occupant protection device disposed on a seat of a vehicle, including:
a seat belt;
an airbag disposed in a region of a lap belt that restrains a waist of an occupant seated on the seat when the occupant wears the seat belt;
an inflator disposed at a position near a lower end of a seat portion of the seat and supplies an inflation gas to the airbag; and
a cover adapted to cover a periphery of the airbag,
the airbag having a bag shape formed of a flexible sheet, and including
a bag body that is held by the lap belt in a folded state and inflates to be able to protect the occupant wearing the seat belt,
a conduit that is connected to the inflator to allow the inflation gas to flow into the bag body, and
a belt loop through which the lap belt can be inserted,
wherein
the conduit is disposed substantially along the lap belt in a state of being held by a conduit holder, and
the conduit holder is formed of a material having flexibility and higher rigidity than the conduit, is disposed substantially along the conduit, and has both end sides fixed to a seat side and a bag body side, respectively by a seat-side fixing portion or a bag body-side fixing portion,
the cover includes a main cover and a conduit-side cover, the main cover is configured to cover an outer peripheral side of the folded bag body, the belt loop and a part of the lap belt, and the conduit-side cover is configured to cover an outer peripheral side of the conduit holder.
16. The occupant protection device according to claim 15 , wherein the seat belt and the inflator are mounted on a seat.
17. The occupant protection device according to claim 15 , wherein the airbag is held by the lap belt so as to be able to displace a folding completion body formed by folding the bag body with respect to the lap belt.
18. The occupant protection device according to claim 15 , wherein the conduit holder is formed of a substantial tube that is able to cover an outer peripheral side of the conduit.
19. The occupant protection device according to claim 18 , wherein the conduit holder is formed of a bellows tube made of synthetic resin.
20. The occupant protection device according to claim 18 , wherein the conduit holder is formed of a tube in which a mesh reinforcing layer is disposed over an entire circumference of a rubber-like elastic body as a base material.