Cushion body

Patent metadata

Field	Value
Publication number	US-9937838-B2
Application number	US-201414899385-A
Country	US
Kind code	B2
Filing date	Jun 17, 2014
Priority date	Jun 18, 2013
Publication date	Apr 10, 2018
Grant date	Apr 10, 2018

Abstract

The present invention solves the problem of realizing a lighter cushion body that has ample cushioning properties when a person sits or lies thereon by: providing a plurality of rod-shaped or flat plate-shaped support bodies ( 2 ) comprising a synthetic resin foam that has a bending deflection amount of 20 mm or more as measured according to the method described in JIS K7221-2:2006 and a pressing force of 2-100 N at 20 mm of deflection, and legs ( 3 ) on which the support bodies ( 2 ) are placed or fixed; using the support bodies and the legs to form a space ( 5 ) that makes it possible to bend and deform the support bodies; and arranging the plurality of rod-shaped or flat plate-shaped support bodies ( 2 ) in a row so as to be deformable.

First claim

What is claimed is:

1. A cushion body comprising:
a plurality of rod or flat plate supporting bodies which are constructed by synthetic resin foamed beads molding having a bending deflection amount equal to or larger than 20 mm and a pressure between 2 and 100 N at the 20 mm bending deflection time, both the bending deflection amount and the pressure being measured in accordance with a method described in JIS K7221-2:2006, in an atmosphere of 23° C.±2° C. and relative humidity of 50±5%, a test specimen is used whose skin is removed having a length of 350 mm, a width of 100 mm, and a thickness of 25 mm is subjected to a load applied at a test speed 20±1 mm/min with a distance between supporting points of 300 mm until the deflection reaches 90 mm at the maximum, during which the load deflection curve is recorded,
wherein the cushion body is structured such that a space portion is formed below said supporting bodies so that the supporting bodies are allowed to be deformed by bending, and said plurality of supporting bodies are lined up so that they can be deformed by bending;

further comprising a frame supporting said supporting bodies,
wherein said supporting bodies are fitted to said frame, mounted to said frame or fixed to said frame, and said supporting bodies are constructed as a cantilever beam structure, a both-end supported beam structure or a three-point or more supported structure.

2. A cushion body comprising:
a plurality of rod or flat plate supporting bodies which are constructed by synthetic resin foamed beads molding having a bending deflection amount equal to or larger than 20 mm and a pressure between 2 and 100 N at the 20 mm bending deflection time, both the bending deflection amount and the pressure being measured in accordance with a method described in JIS K7221-2:2006, in an atmosphere of 23° C.±2° C. and relative humidity of 50±5%, a test specimen is used whose skin is removed having a length of 350 mm, a width of 100 mm, and a thickness of 25 mm is subjected to a load applied at a test speed 20±1 mm/min with a distance between supporting points of 300 mm until the deflection reaches 90 mm at the maximum, during which the load deflection curve is recorded,
wherein the cushion body is structured such that a space portion is formed below said supporting bodies so that the supporting bodies are allowed to be deformed by bending, and said plurality of supporting bodies are lined up so that they can be deformed by bending, and
further comprising a leg body supporting said supporting bodies,
wherein said supporting bodies are fitted to said leg body, mounted to said leg body, fixed to said leg body or integrally formed with said leg body, and said supporting bodies are constructed as a cantilever beam structure, a both-end supported beam structure or a three-point or more supported structure.

3. The cushion body according to claim 1 , wherein said leg body has a shape which is bent at a single time or plural times, on a line which connects a supporting point in one end side coming into contact with the supporting body and a supporting point of the leg body leading end in the other end side.

4. The cushion body according to claim 1 , wherein said supporting body has a linear shape, a curved shape or a bent shape.

5. The cushion body according to claim 1 , wherein said supporting body is constructed as a laminated structure.

6. The cushion body according to claim 1 , wherein said leg body is pressed and stopped its one end in the supporting body side by said supporting body, and is inhibited its other end from moving in a pressing direction generated by the seated person or the supine posture person, and said leg body is obtained by independently or continuously arranging the leg body formed into an approximately single linear shape structured such that a supporting point in one end side where said leg body comes into contact with the supporting body and a supporting point in a leading end of the leg body in the other end side of the leg body do not exist on the same line as the pressing direction of the supporting body.

7. The cushion body according to claim 1 , wherein said supporting body is provided with through holes.

8. The cushion body according to claim 1 , wherein projections or protrusions are provided in a protruding manner on a surface in a side of said supporting body.

9. The cushion body according to claim 1 , wherein a sub-supporting body constructed by an elastic body is arranged in a direction in which said supporting body is pressed, so as to suppress the deflection amount caused by the bending deformation of said supporting body by being separated from said supporting body or being brought into contact with said supporting body.

10. The cushion body according to claim 1 , wherein said supporting body is constructed as a multilayer structure and a gap is provided between said layers.

11. The cushion body according to claim 1 , wherein projections and/or protrusions are provided in a protruding manner on a rear face of said supporting body or a surface in said supporting body side of a rear surface portion facing to said supporting body.

12. The cushion body according to claim 1 , wherein a columnar body having smaller reaction force at the compression time than said leg body is provided in a protruding manner on a rear face of said supporting body or a surface in said supporting body side of a rear surface portion facing to said supporting body so that a leading end portion of said columnar body is brought into contact with said rear surface or the rear face of said supporting body facing thereto.

13. The cushion body according to claim 12 , wherein said columnar body is constructed by at least one material which is made of a softer material than said leg body, a material which is formed into a tapered shape in its leading end portion, which is formed into a bent shape, or which has a smaller cross sectional area than said leg body, thereby making the reaction force smaller than the reaction force at the compression time of said leg body.

14. A cushion body comprising:
a plurality of rod or flat plate supporting bodies which are constructed by synthetic resin foam having a bending deflection amount equal to or larger than 20 mm and a pressure between 2 and 100 N at the 20 mm bending deflection time, both the bending deflection amount and the pressure being measured in accordance with a method described in JIS K7221-2:2006, in an atmosphere of 23° C.±2° C. and relative humidity of 50±5%, a test specimen is used whose skin is removed having a length of 350 mm, a width of 100 mm, and a thickness of 25 mm is subjected to a load applied at a test speed 20±1 mm/min with a distance between supporting points of 300 mm until the deflection reaches 90 mm at the maximum, during which the load deflection curve is recorded,
wherein the cushion body is structured such that a space portion is formed below said supporting bodies so that the supporting bodies are allowed to be deformed by bending, and said plurality of supporting bodies are lined up so that they can be deformed by bending and the synthetic resin foam is a polyolefin foam or a modified polystyrene foam.

15. The cushion body of claim 14 , wherein the polyolefin foam is polyethylene foam or polypropylene foam.

16. The cushion body of claim 15 , wherein the synthetic resin foam is synthetic foamed beads molding.

17. The cushion body of claim 14 , wherein the synthetic resin foam is a polyolefin foamed beads molding.

18. The cushion body of claim 14 , wherein the synthetic resin foam is

Assignees

• Toyo Seat Co Ltd
• Jsp Corp

Inventors

• Ito Hiroyuki
• Murata Seishiro
• Shioya Satoru
• Imai Takashi

Classifications

• A47G2009/1018

  Foam pillows · CPC title

• A47G9/10

  Pillows (pillow holders A47C21/00, {A47C21/026}; specially adapted for preventing snoring A61F5/56) · CPC title

• B60N2/643

  shape of the back-rests (B60N2/66 takes precedence) · CPC title

• B60N2/646

  shape of the cushion · CPC title

• A47C7/021 Primary

  Detachable or loose seat cushions · CPC title