Vehicle seat

• US 9,771,009 B2
• Filed: 10/30/2015
• Issued: 09/26/2017
• Est. Priority Date: 10/30/2015
• Status: Active Grant

• Current Assignee: Leggett & Platt Incorporated, TS Tech Company Limited
• Original Assignee: Leggett & Platt Incorporated, TS Tech Company Limited
• Inventors: Kijima, Yuta, Wortley, Blake
• Primary Examiner(s): Islam, Syed A
• Application Number:
  US14/928,240
• Publication Number:
  US 20170120789A1
• Time in Patent Office: 697 Days
• Field of Search: 29745249, 29745254, 297 5254, 2974525
• CPC Class Codes: A47C 7/20 with reinforcement in the foam layer
• CPC Class Codes: A47C 7/28 with tensioned springs, e.g. of flat type
• CPC Class Codes: A47C 7/287 with combinations of different types flat type tensioned springs
• CPC Class Codes: A47C 7/30 with springs meandering in a flat plane
• CPC Class Codes: B60N 2/7058 Metallic springs
• CPC Class Codes: B60N 2/72 Attachment or adjustment thereof

Abstract

A vehicle seat that can reduce manufacturing costs while increasing assembling rigidity of an elastic spring for supporting an occupant is described. A vehicle seat includes an elastic spring bridged between a front frame and a rear frame to support an occupant. A hook member is attached to a rear end portion of the elastic spring to be hooked to the rear frame. The hook member includes a hook body extending along an outer periphery of the rear frame and a projection projecting from a front edge of the hook body toward the rear frame and formed to have a width smaller than a width of the hook body. A through-hole is formed in a portion of the hook body, which is opposed to the projection. The through-hole has a width larger than a width of the projection and a length larger than a projecting length of the projection.

Claims

1. A vehicle seat comprising:

a seat frame having a frame-shaped body;

an elastic support member for supporting an occupant that bridges one part and an other part of the seat frame in a predetermined direction; and

a hook member, wherein;

the hook member is hooked to a hooked section in the one part of the seat frame, and is attached to an end portion of the elastic support member;

the hook member further comprises a hook body extending along an outer periphery of the hooked section, and a projection projecting from a front edge of the hook body toward the hooked section, the projection having a width smaller than a width of the hook body;

the hook body further comprises a through-hole in a portion opposite to the projection in an orthogonal direction that is orthogonal to a projecting direction in which the projection projects, the through-hole extending in the orthogonal direction; and

the through hole has a width larger than a width of the projection, and a length larger than a length of projecting in the projecting direction.

2. The vehicle seat according to the claim 1, wherein:

the seat frame is a cushion frame;

the cushion frame further comprises a side frame in each side portion of the cushion frame in a seat width direction, the side frame extending in a front to back direction of the seat, a front frame that couples each front potion of side frames, and a rear frame that couples each rear portion of the side frames;

a plurality of the elastic support members are provided at predetermined intervals in the seat width direction, and bridge the front frame and the rear frame; and

the hook member is a resin member, and is hooked to an outer periphery of the rear frame.

3. The vehicle seat according to claim 2, wherein:

the hook body further comprises;

a frame contact section that extends to contact along an outer peripheral surface of the rear frame; and

a frame cover that extends from the frame contact section in the seat width direction to cover the rear frame.

4. The vehicle seat according to claim 3, wherein:

a plurality of the frame contact sections are provided at predetermined intervals in the seat width direction;

each end portion of the plurality of the frame contact sections is attached to the each end portion of the plurality of the elastic support members; and

the frame cover couples at least two or more of the frame contact sections.

5. The vehicle seat according to claim 3, wherein a plurality of the projections and the through-holes are respectively provided in the frame cover at predetermined intervals in the seat width direction.

6. The vehicle seat according to claim 3, wherein:

the projection is a first projection; and

a second projection is provided between the through-holes in the frame cover, the second projection projecting from the frame cover toward the rear frame.

7. The vehicle seat according to claim 3, wherein the through-hole extends from the portion opposite to the projection toward the projection in the frame cover, and the width of the through-hole narrows toward the projection.

8. The vehicle seat according to claim 1, wherein an exposure hole for exposing a portion of the end portion of the elastic support member is provided in a tail edge portion of the hook body, to which the end portion of the elastic support member is attached.

9. The vehicle seat according to claim 2, wherein:

the rear frame is a pipe frame having a substantially circular shape in cross-section; and

the hook body has a substantially U-shape, and extends to contact along an outer peripheral surface of the pipe frame.