Vehicle seat with suspension device

• US 4,813,645 A
• Filed: 04/23/1987
• Issued: 03/21/1989
• Est. Priority Date: 04/23/1987
• Status: Expired due to Fees

• Current Assignee: Tachi-S Company Limited
• Original Assignee: Tachi-S Company Limited
• Inventors: Iwami, Kunihide
• Primary Examiner(s): Foss, J. Franklin
• Application Number:
  US07/041,776
• Time in Patent Office: 698 Days
• Field of Search: 248/588, 248/429, 248/430, 248/584, 248/595, 297/473, 297/485, 297/468, 296/65 R, 280/801, 280/804
• US Class Current: 248/588
• CPC Class Codes: B60N 2/502 attached to the base of the seat B60N2/504 takes precedence
• CPC Class Codes: B60N 2/508 Scissors-like structure
• CPC Class Codes: B60N 2/544 Compression or tension springs B60N2/542 takes precedence
• CPC Class Codes: B60R 22/26 secured to the seat

Abstract

In a vehicle seat with suspension device wherein the suspension device is provided between the seat and a floor of the vehicle and a belt anchor for seat belt is provided on the seat, there are arranged an engagement member of a U-shaped configuration on the lateral side of the seat and an engagement guide member on the upper frame of the suspension device such that the engagement member is halfway engaged with the engagement guide member, and further a connecting link piece between the upper and lower frames of the suspension device. With such structure, a pulling force exerted upon the seat belt is transmitted through the engagement member, engagement guide member and connecting link piece down to the floor of vehicle and received by the same.

Claims

1. A vehicle seat with a suspension device in which the suspension device has upper and lower frames, a seat adjusting device is interposed between the seat and suspension device, and a seat belt is provided on the seat, said seat comprising:

a belt anchor fixed on a lateral side of said seat, said belt anchor being adapted to be connected with said seat belt;

an engagement member fixed on the lateral side of said seat, said engagement member extending downwardly and having a lower end portion of a substantially U-shaped configuration;

an engagement guide member fixed on an upper frame of said suspension device, with such an arrangement that said engagement guide member is at its upper portion engaged halfway with said engagement member; and

a connecting link piece provided between said upper and lower frames of said suspension device such that a first end portion of said connecting link piece is pivotally connected to one of said upper and lower frames,

an elongated engagement hole formed in the other one of said upper and lower frames in which a second end portion of said connecting link piece is slidably engaged,

whereby, when a pulling load is exerted upon said seat belt, causing said engagement member and engagement guide member to be brought to a full engagement with each other, the pulling load is transmitted through an engaged portion of said engagement and engagement guide members as well as through said connecting link piece, to a floor side of the vehicle and received thereby.

2. The vehicle seat according to claim 1, wherein there is provided a slide rail between a bottom surface of said seat and said suspension device, wherein a reclining device is fixed on a seat cushion of said seat, said reclining device having a base plate, the arrangement of said base plate being such that its upper portion is fixedly provided with said belt anchor while its lower portion is formed with said engagement member which is bent or curved in a substantially U-shaped configuration, and where in said first end portion of said connecting link piece is rotatable in a forward and backward direction and said second end portion of said connecting link piece is movable in a forward and backward direction.

3. The vehicle seat according to claim 2, wherein said substantially U-shaped engagement member is in a slidable engagement with said engagement guide member so that said engagement member is movable in a longitudinal direction of said engagement guide member.

4. The vehicle seat according to claim 1, wherein said suspension device comprises an upper frame fixed to said slide rail disposed thereabove, a lower frame fixed to said floor of vehicle, and an X-shaped link provided between said upper and lower frames, said X-shaped link comprising at least two support link pieces such that they are pivotally connected to each other in a crossed manner, and wherein there is extended a tension coil spring between one of said upper and lower frames and a movable-side end portion of one of said support link pieces.

5. The vehicle seat according to claim 1, wherein said engagement guide member is fixed on a lateral side of said upper frame of said suspension device, extending horizontally in a longitudinal direction of said upper frame, said engagement guide member having an enlarged portion formed in its rearward half portion in which said elongated engagement hole is formed extending in a longitudinal direction of said enlarged portion.