Cushion body

Patent metadata

Field	Value
Publication number	US-2016152168-A1
Application number	US-201414899385-A
Country	US
Kind code	A1
Filing date	Jun 17, 2014
Priority date	Jun 18, 2013
Publication date	Jun 2, 2016
Grant date	—

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

1 . A cushion body comprising:
a plurality of rod-like or flat plate-like supporting bodies which are constructed by a 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, 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.

2 . The cushion body according to claim 1 , 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 , 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.

4 . The cushion body according to claim 1 , wherein said supporting body is formed into at least any one shape of a linear shape, a curved shape and a bent shape constructed by combination of straight line portions obtained by bending straight lines at optional angles, in a plane view in the case that a surface coming into contact with the seated person or the supine posture person is an approximately horizontal surface, or in a front view in the case that the surface coming into contact with the seated person is an approximately vertical surface.

5 . The cushion body according to claim 1 , wherein said supporting body is constructed as a laminated structure obtained by laminating and integrating the same or different materials, or a structure obtained by forming every positions with the same or different materials and integrating them.

6 . The cushion body according to claim 1 , wherein on the basis of intension of an expected pressure applied to the positions of said supporting body and a desirable deformation amount for supporting the load, a thickness of the supporting body is made smaller for making section modulus of the position small in the case that the deformation amount is enlarged every position of said supporting body, and the thickness is set larger for making the section modulus of the position large in the case that the deformation amount is suppressed.

7 . The cushion body according to claim 1 , wherein said supporting body is provided with through holes in a front-rear direction, a right-left direction or an up-down direction.

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 with which the person comes into contact.

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 so that leading end portions of said projections and/or the protrusions are separated from said rear surface portion or the rear face of said supporting body facing thereto.

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 of a means which is made of a softer material than said leg body, a means which is formed into a tapered shape in its leading end portion, a means which is formed into a bent shape, and a means 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 . The cushion body according to claim 2 , 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.

15 . The cushion body according to claim 2 , 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.

Assignees

• Toyo Seat Co Ltd
• Jsp Corp

Inventors

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

Classifications

• A47C7/18

  having foamed material included in cushioning part · CPC title

• B60N2/7094 Primary

  Upholstery springs · CPC title

• B60N2/646

  shape of the cushion · CPC title

• A47G2009/1018

  Foam pillows · CPC title

• A47C7/021 Primary

  Detachable or loose seat cushions · CPC title