Cushioning-material structure for vehicle seat

Patent metadata

Field	Value
Publication number	US-10308302-B2
Application number	US-201715722695-A
Country	US
Kind code	B2
Filing date	Oct 2, 2017
Priority date	Jun 28, 2012
Publication date	Jun 4, 2019
Grant date	Jun 4, 2019

Abstract

The purpose of the present invention is to provide a cushioning material structure, for a vehicle seat, that makes it possible to reduce the weight of the vehicle seat while maintaining stable riding performance. A cushioning material supported by the top surface of a bottom plate provided on a vehicle body is provided with voids. This allows weight reduction without reducing the thickness of the cushioning material as in conventional cushioning-material structures, thereby making it possible to reduce the weight of the vehicle seat while maintaining stable riding performance.

First claim

The invention claimed is:

1. A cushion material structure of a vehicle seat, comprising:
a cushion material supported by an upper surface of a bottom plate that is provided on a vehicle body,
wherein the cushion material is formed so as to bend at a lowest layer part thereof and not at an upper layer part thereof, and
wherein a density of the cushion material is the densest at the lowest layer part thereof.

2. The cushion material structure of the vehicle seat according to claim 1 ,
wherein a plurality of space sections, each of which has a shape that becomes smaller as approaching an upper section thereof from a lower section thereof, are formed in the cushion material, the lowest layer part of the cushion material being lower ends of the space sections.

3. The cushion material structure of the vehicle seat according to claim 2 ,
wherein a lower end section of each of the space sections is opened.

4. The cushion material structure of the vehicle seat according to claim 3 ,
wherein a shape of an opening section of each of the space sections is either a circular shape or an oval shape.

5. The cushion material structure of the vehicle seat according to claim 3 ,
wherein an inner surface of each of the space sections is a concave curved surface that is recessed upward.

6. The cushion material structure of the vehicle seat according to claim 3 ,
wherein a laminate member is layered across an entire under surface of the cushion material.

7. The cushion material structure of the vehicle seat according to claim 6 ,
wherein air holes that ensure air passage from the space sections are formed in the laminate member.

8. A cushion material structure of a vehicle seat, comprising:
a cushion material supported by an upper surface of a bottom plate that is provided on a vehicle body,
wherein the bottom plate includes a main surface section and a sub surface section that is arranged in front of the main surface section and that is tilted upward with respect to the main surface section,
at least one space section is formed in the cushion material at a part corresponding to a bent section between the main surface section and the sub surface section, and
the at least one space section has a shape in which a width gradually becomes smaller as approaching an upper side from a lower side.

9. The cushion material structure of the vehicle seat according to claim 8 ,
wherein the space section in the cushion material is formed at a part configured to correspond to an ischium of a passenger when sitting on the bent section.

10. The cushion material structure of the vehicle seat according to claim 8 ,
wherein space sections are also provided in front of and behind the space section at the part corresponding to the bent section, and
a wall section is provided between the space sections.

11. The cushion material structure of the vehicle seat according to claim 8 ,
wherein the inner surface of the space section provided at the part corresponding to the bent section is a concave curved surface that is recessed upward, and
a deepest point of the concave curved surface is arranged on the bent section.

12. The cushion material structure of the vehicle seat according to claim 8 ,
wherein wall sections that extend vertically are formed in the bottom plate so as to face each other at left and right on the bent section, the wall sections being formed along the front-to-back direction.

13. The cushion material structure of the vehicle seat according to claim 8 ,
wherein left and right mounting sections to be fixed to the vehicle body and a rib that is arranged between the left and right mounting sections and extends in a left-to-right direction are provided at a back side of the bent section in the bottom plate, and
a top view V shaped bead arranged between the left and right mounting sections is formed on an upper side of the bottom plate.

14. The cushion material structure of the vehicle seat according to claim 13 ,
wherein the bead is arranged so as to overlap with the space section provided at the part corresponding to the bent section in the cushion material.

Assignees

• Ts Tech Co Ltd

Inventors

• Chiba Tomohisa
• Kiya Katsuhiro
• Ueyama Yoshinori

Classifications

• B62J1/18 Primary

  Covers for saddles or other seats; Paddings · CPC title

• B62J1/12

  Box-shaped seats; Bench-type seats, e.g. dual or twin seats · CPC title

• B62J1/26

  Paddings involving other resilient material, e.g. sponge rubber with inflatable compartments · CPC title

• B60N2/40

  saddle type · CPC title

• B63B2029/043

  Seats; Arrangements thereof on vessels · CPC title