Air belt apparatus

• US 20070102910A1
• Filed: 11/06/2006
• Published: 05/10/2007
• Est. Priority Date: 11/10/2005
• Status: Abandoned Application

• Current Assignee: Takata Corporation (Ningbo Junsheng Investment Group Co., Ltd.)
• Original Assignee: Takata Corporation (Ningbo Junsheng Investment Group Co., Ltd.)
• Inventors: Nezaki, Takuya, Suyama, Yoji
• Application Number:
  US11/593,104
• Publication Number:
  US 20070102910A1
• Time in Patent Office: Days
• US Class Current: 280/733
• CPC Class Codes: B60R 21/18 the inflatable member formed as a belt or harness or combined with a belt or harness arrangement
• CPC Class Codes: B60R 22/4628 characterised by fluid actuators, e.g. pyrotechnic gas generators actuating a cable B60R22/4619

Abstract

An air belt apparatus is provided wherein a gas-supplying source for operating a chest portion expansion portion and a pretensioner are mounted in limited space in a motor vehicle seat by commoditizing the gas supplying source. An air belt apparatus for use in a motor vehicle includes chest-restraint webbing having a chest expanding portion corresponding to a chest portion of an occupant at expansion, lumbar-restraint webbing being pulled out from a retractor, and corresponding to a lumbar portion of the occupant, and a gas-supplying source. Since the gas-supplying source that supplies gas to the chest expanding portion and the pretensioner are unified and commoditized, the gas supplying source can be mounted using only a limited amount of mounting space in a motor vehicle seat.

Claims

1. An air belt apparatus for use in a motor vehicle comprising:

chest-restraint webbing having a chest expanding portion corresponding to a chest portion of an occupant at expansion;

lumbar-restraint webbing to be pulled out from a retractor and corresponding to a lumbar portion of the occupant;

a pretensioner for raising restraining force for the occupant by raising tensile force of the lumbar-restraint webbing by means of gas pressure at a motor vehicle collision; and

a single gas-supplying source for supplying gas to the chest expanding portion and the pretensioner at the motor vehicle collision.

2. The air belt apparatus for use in a motor vehicle according to claim 1, wherein the pretensioner is disposed in the retractor.

3. The air belt apparatus for use in a motor vehicle according to claim 1, wherein a gas-supplying pathway is provided for connecting the chest expanding portion and the pretensioner to the single gas-supplying source.

4. The air belt apparatus for use in a motor vehicle according to claim 1, wherein a single wire harness is connected to the single gas-supplying source, and the gas supplying source is activated through the wire harness.

5. The air belt apparatus for use in a motor vehicle according to claim 1, wherein the single gas-supplying source is disposed at a lower part of a seat cushion of a motor vehicle seat.

6. The air belt apparatus for use in a motor vehicle according to claim 3, wherein the chest-restraint webbing has a tongue plate provided at the end of the chest-restraint webbing for connecting to a buckle device, wherein a gas inlet is provided in the tongue plate.

7. The air belt apparatus for use in a motor vehicle according to claim 6, wherein the buckle device has an insertion portion configured to receive the gas inlet, wherein the gas-supplying pathway is connected to the insertion portion.

8. The air belt apparatus for use in a motor vehicle according to claim 6, wherein the gas-supplying pathway branches at a branching point such that a first branch of the gas-supplying pathway is connected to the pretensioner and a second branch of the gas-supplying pathway is connected to the insertion portion.

9. An air belt apparatus comprising:

a chest-restraint webbing having an expandable portion configured to expand in an area near the chest of an occupant;

a lumbar-restraint webbing configured to emerge from a retractor;

a pretensioner configured to increase the tensile force applied by the lumbar-restraint webbing; and

a gas source configured to supply gas to the chest-restraint webbing and the pretensioner.

10. The air belt apparatus according to claim 9, wherein the pretensioner is disposed in the retractor.

11. The air belt apparatus according to claim 9, wherein the gas source is connected to the chest-restraint webbing and the pretensioner via a gas-supply pathway.

12. The air belt apparatus according to claim 9, wherein the gas source is connected to a single wire harness that activates the gas source.

13. The air belt apparatus according to claim 9, wherein the gas source is disposed underneath a lower part of a seat in a motor vehicle.

14. The air belt apparatus according to claim 11, wherein the chest-restraint webbing has a tongue plate provided at the end of the chest-restraint webbing for connecting to a buckle device, wherein a gas inlet is provided in the tongue plate.

15. The air belt apparatus according to claim 14, wherein the buckle device has an insertion portion configured to receive the gas inlet, and the gas-supply pathway is connected to the insertion portion.

16. The air belt apparatus for use in a motor vehicle according to claim 15, wherein the gas-supply pathway branches at a branching point such that a first branch of the gas-supply pathway is connected to the pretensioner and a second branch of the gas-supply pathway is connected to the insertion portion.

17. An air belt apparatus comprising:

a chest-restraint webbing having an expandable portion configured to expand in an area near the chest of an occupant;

a lumbar-restraint webbing configured to emerge from a retractor;

a pretensioner configured to increase the tensile force applied by the lumbar-restraint webbing; and

a gas source configured to supply gas to the chest-restraint webbing and the pretensioner, wherein the gas source is connected to the chest-restraint webbing and the pretensioner via a gas-supply pathway that branches at a branching point such that a first branch of the gas-supply pathway is connected to the pretensioner and a second branch of the gas-supply pathway is connected to the chest-restraint webbing.

18. The air belt apparatus according to claim 17, wherein the pretensioner is disposed in the retractor.

19. The air belt apparatus according to claim 17, wherein the gas source is connected to the chest-restraint webbing and the pretensioner via a gas-supply pathway.

20. The air belt apparatus according to claim 17, wherein the gas source is connected to a single wire harness that activates the gas source.