Seat device for vehicle

Patent metadata

Field	Value
Publication number	US-9452697-B2
Application number	US-201314416327-A
Country	US
Kind code	B2
Filing date	Jun 21, 2013
Priority date	Jul 24, 2012
Publication date	Sep 27, 2016
Grant date	Sep 27, 2016

Abstract

A seat device for a vehicle is provided in which a dynamic damper is formed of a weight and an elastic member supporting the weight so as to be capable of vibrating, and the elastic member is retained on a frame or a cushion member of a seat installed in the vehicle, wherein the weight is formed into a polyhedron whereas the elastic member is formed into a sheet shape, and the weight is covered and supported by the sheet-shaped elastic member. This enables the weight to be supported simply by the elastic member, and the dynamic damper to be provided at low cost.

First claim

The invention claimed is:

1. A seat device for a vehicle, said seat device comprising a dynamic damper which comprises:
a weight; and
a sheet-shaped elastic member supporting the weight such that the weight is capable of vibrating relative to a frame or a cushion member of a seat installed in the vehicle, the elastic member being retained on the frame or the cushion member,
wherein the weight is formed in a shape of a polyhedron, and the weight is covered by the sheet-shaped elastic member and supported on the frame or the cushion member of the seat, and
wherein the sheet-shaped elastic member is formed so as to be wrapped around the weight and opposite end parts of the sheet-shaped elastic member oppose each other without being superimposed on one another.

2. The seat device for a vehicle according to claim 1 , wherein the opposite end parts of the sheet-shaped elastic member are adhered to the weight.

3. The seat device for a vehicle according to claim 1 , wherein the weight and the sheet-shaped elastic member covering the weight are housed within a damper case supported on the frame or the cushion member of the seat.

4. The seat device for a vehicle according to claim 3 , wherein the weight and the sheet-shaped elastic member covering the weight are housed within the damper case supported on the cushion member of the seat, and the sheet-shaped elastic member is formed from a material that is softer than the cushion member.

5. The seat device for a vehicle according to claim 1 , wherein the weight is formed into a hexahedron whereas the sheet-shaped elastic member is formed from a rectangular central portion corresponding to a first face of the weight and four sheet pieces protruding from a periphery of the central portion, the central portion is superimposed on the first face of the weight, and the four sheet pieces are each folded inwardly so that end parts of the four sheet pieces oppose each other on a second face on a side opposite to the first face of the weight.

6. The seat device for a vehicle according to claim 1 , wherein the opposite end parts of the sheet-shaped elastic member oppose each other on a face of the weight.

7. The seat device for a vehicle according to claim 6 , wherein a ridge part of the weight, that is in contact with the sheet-shaped elastic member, is rounded.

8. The seat device for a vehicle according to claim 7 , wherein the opposite end parts of the sheet-shaped elastic member are adhered to the weight.

9. The seat device for a vehicle according to claim 7 , wherein the weight and the sheet-shaped elastic member covering the weight are housed within a damper case supported on the frame or the cushion member of the seat.

10. The seat device for a vehicle according to claim 9 , wherein the weight and the sheet-shaped elastic member covering the weight are housed within the damper case supported on the cushion member of the seat, and the sheet-shaped elastic member is formed from a material that is softer than the cushion member.

11. The seat device for a vehicle according to claim 7 , wherein the weight is formed into a hexahedron whereas the sheet-shaped elastic member is formed from a rectangular central portion corresponding to a first face of the weight and four sheet pieces protruding from a periphery of the central portion, the central portion is superimposed on the first face of the weight, and the four sheet pieces are each folded inwardly so that end parts of the four sheet pieces oppose each other on a second face on a side opposite to the first face of the weight.

12. The seat device for a vehicle according to claim 6 , wherein the opposite end parts of the sheet-shaped elastic member oppose each other on the face of the weight on a side of the seat device configured to be disposed opposite to a seated person during use.

13. The seat device for a vehicle according to claim 12 , wherein the opposite end parts of the sheet-shaped elastic member are adhered to the weight.

14. The seat device for a vehicle according to claim 12 , wherein the weight and the sheet-shaped elastic member covering the weight are housed within a damper case supported on the frame or the cushion member of the seat.

15. The seat device for a vehicle according to claim 14 , wherein the weight and the sheet-shaped elastic member covering the weight are housed within the damper case supported on the cushion member of the seat, and the sheet-shaped elastic member is formed from a material that is softer than the cushion member.

16. The seat device for a vehicle according to claim 6 , wherein the weight and the sheet-shaped elastic member covering the weight are housed within a damper case supported on the frame or the cushion member of the seat.

17. The seat device for a vehicle according to claim 16 , wherein the weight and the sheet-shaped elastic member covering the weight are housed within the damper case supported on the cushion member of the seat, and the sheet-shaped elastic member is formed from a material that is softer than the cushion member.

18. A seat device for a vehicle, said seat device comprising a dynamic damper which comprises:
a weight; and
a sheet-shaped elastic member supporting the weight such that the weight is capable of vibrating relative to a frame or a cushion member of a seat installed in the vehicle, the elastic member being retained on the frame or the cushion member,
wherein:
the weight is formed in a shape of a polyhedron, and the weight is covered by the sheet-shaped elastic member and supported on the frame or the cushion member of the seat;
opposite end parts of the sheet-shaped elastic member are adhered to the weight; and
the weight and the sheet-shaped elastic member covering the weight are housed within a damper case supported on the frame or the cushion member of the seat, and the sheet-shaped elastic member is formed from a material that is softer than the cushion member.

19. A seat device for a vehicle, said seat device comprising a dynamic damper which comprises:
a weight; and
a sheet-shaped elastic member supporting the weight such that the weight is capable of vibrating relative to a frame or a cushion member of a seat installed in the vehicle, the elastic member being retained on the frame or the cushion member,
wherein the weight is formed in a shape of a polyhedron, the weight is covered by the sheet-shaped elastic member and supported on the frame or the cushion member of the seat, and in order to adjust a spring constant of the sheet-shaped elastic member, the sheet-shaped elastic member is provided with a non-covering region in which the sheet-shaped elastic member does not cover the weight.

20. The seat device for a vehicle according to claim 19 , wherein the sheet-shaped elastic member is formed from a first elastic portion that covers one end part of the weight and a second elastic portion that covers the other end part of the weight, and the non-covering region is provided between the first and second elastic portions.

21. The seat device for a vehicle according to claim 20 , wherein the first and second elastic portions are formed so as to have the same shape interchangeable with each other.

22. The seat device for a vehicle according to claim 20 , wherein the weight is formed into a polygon, a damper chamber is formed into a similar polygon to the weight, and a peripheral edge part at one end and a peripheral edge part at the other end of the weight are covered by the sheet-shaped elastic member.

Assignees

• Ts Tech Co Ltd

Inventors

• Okubo Takuya
• Kawashima Isao

Classifications

• B60N2002/899

  characterised by structural or mechanical details not otherwise provided for · CPC title

• B60N2/80

  Head-rests · CPC title

• F16F7/108 Primary

  on plastics springs · CPC title

• B60N2/90

  Details or parts not otherwise provided for · CPC title

• B60N2/68 Primary

  Seat frames · CPC title