Air belt apparatus

• US 7,866,690 B2
• Filed: 11/08/2006
• Issued: 01/11/2011
• Est. Priority Date: 11/15/2005
• Status: Expired due to Fees

• Current Assignee: Takata Corporation (Ningbo Junsheng Investment Group Co., Ltd.)
• Original Assignee: Takata Corporation (Ningbo Junsheng Investment Group Co., Ltd.)
• Inventors: Itoga, Yasuo
• Primary Examiner(s): Dickson; Paul N
• Assistant Examiner(s): BECK, KAREN JANE AMORES
• Application Number:
  US11/992,413
• Publication Number:
  US 20090108570A1
• Time in Patent Office: 1,525 Days
• Field of Search: 280/733, 280/736, 280/742
• US Class Current: 280/733
• CPC Class Codes: B60R 2021/2612 Gas guiding means, e.g. ducts
• 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 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
• CPC Class Codes: B60R 22/26 secured to the seat

Abstract

An air belt apparatus that can reduce the required tolerance level of a pipe is provided. Gas supplied from an inflator 12 flows into a bag body 16 through a pipe 18 so as to inflate a lap bag 15. The inflator 12 is connected to a gas inlet 16a of the bag body 16 via the pipe 18. The gas inlet 16a is cylindrical, and the pipe 18 is inserted in this cylindrical gas inlet 16a so as to extend beyond an inner end of the gas inlet 16a.

Claims

1. An air belt apparatus, comprising:

an inflatable lap belt bag;

an inflator to inflate the lap belt bag; and

a lap anchor; and

a base plate,

wherein gas from the inflator is supplied to the bag via a pipe, wherein the bag includes a gas inlet through which the pipe extends and a large-diameter portion adjoining an inner end of the gas inlet and having a diameter larger than that of the gas inlet,

wherein the pipe extends beyond the inner end of the gas inlet,

wherein a tip end of the pipe is positioned in the large-diameter portion, and

wherein the inflator is attached to the base plate via a hook portion on the base plate, and the lap anchor is fixed to the base plate, and wherein the base plate includes a second hook portion to connect the base plate to the pipe.

2. The air belt apparatus according to claim 1, wherein the gas inlet has a cylindrical shape with a uniform diameter.

3. The air belt apparatus according to claim 1, wherein the gas inlet has a tapered shape whose diameter becomes smaller toward the inner end.

4. The air belt apparatus according to claim 3, wherein the bag includes a narrow portion corresponding to where the diameter of the gas inlet is the smallest, and wherein the large-diameter portion has a diameter larger than that of the narrow portion.

5. The air belt apparatus according to claim 1, wherein the gas inlet is coupled to the pipe by tightening the gas inlet with a lashing member.

6. The air belt apparatus according to claim 1, wherein a cross-sectional area of an inflated bag body where a tip end of the pipe is positioned is 1.5 to 6 times that of an opening of the tip end of the pipe.