Seat airbag

• US 7,896,388 B2
• Filed: 10/16/2006
• Issued: 03/01/2011
• Est. Priority Date: 01/11/2006
• 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: Takedomi, Akifumi, Sugimoto, Shinichi
• Primary Examiner(s): Dickson; Paul N
• Assistant Examiner(s): VERLEY, NICOLE T
• Application Number:
  US12/160,765
• Publication Number:
  US 20100164204A1
• Time in Patent Office: 1,597 Days
• Field of Search: 280/730.2, 280/728.3
• US Class Current: 280/730.2
• CPC Class Codes: B60N 2/58 Seat coverings
• CPC Class Codes: B60N 2002/5808 comprising opening zones for airbags
• CPC Class Codes: B60R 2021/0048 Head
• CPC Class Codes: B60R 21/207 in vehicle seats

Abstract

To provide a seat that enhances the stability and expansion speed with respect to the inflation expansion performance of airbag unit disposed thereinside. In one form, a seat is provided comprising a backrest part covered at its entirety with top fabric material and, at a given region of the top fabric material, it is furnished with tear line; an airbag constituted of a bag consisting of two basis fabrics joined together and disposed within the backrest part so as to at the time of inflation, cleave the tear line and expand over the head of driver or passenger; and reinforcing fabric disposed on the top fabric material so as to inhibit any cleavage of the top fabric material at regions other than the tear line.

Claims

1. A seat comprising:

a backrest covered with a skin cloth and including a cleavage portion at a predetermined portion of the skin cloth, wherein the cleavage portion comprises a tear line formed in the skin cloth with the tear line having opposite ends and a predetermined length therebetween;

an airbag provided in an interior of the backrest so as to be deployed towards an upper side of the head of an occupant as a result of cleaving the tear line during inflation; and

a cleavage restricting member provided at the skin cloth so as to restrict a cleavage of the skin cloth at a portion other than the cleavage portion, wherein the cleavage restricting member comprises a reinforcement cloth having a slit formed therein with the slit having opposite ends and a predetermined length therebetween the same as the predetermined length of the tear line, and the reinforcement cloth being sized so that when adhered to the backrest, the slit ends and the tear line ends are at the same positions so that the slit and the tear line are coextensive with each other and the reinforcement cloth overlaps the entire length of the tear line to extend beyond the ends thereof for restricting cleavage of the skin cloth beyond the tear line ends.

2. The seat according to claim 1, wherein the reinforcement cloth is provided at a stitch portion of the skin cloth.

3. The seat according to claim 1, wherein a damping layer is provided at an inner side of the skin cloth, and the reinforcement cloth is provided at the damping layer.