Seat pad and seat pad production device

Patent metadata

Field	Value
Publication number	US-2018257526-A1
Application number	US-201615571171-A
Country	US
Kind code	A1
Filing date	Apr 22, 2016
Priority date	May 28, 2015
Publication date	Sep 13, 2018
Grant date	—

Abstract

A seat pad (10) having a loading surface (11). In the seat pad (10), a lateral slit portion (15), extending from the outside towards the inside of the seat pad (10) in a first lateral direction (B1) that is parallel to the loading surface (11), is formed. A longitudinal slit portion (15) is provided at an end portion of the lateral slit portion (15), in a second lateral direction (B2) that is orthogonal to the first lateral direction (B1) and that is parallel to the loading surface (11). The longitudinal slit portion (21) extends from the lateral slit portion (15) towards the loading surface (11) in a thickness direction (H) that is orthogonal to the loading surface (11).

First claim

1 ] A seat pad having a loading surface, wherein
a lateral slit portion, extending from an outside towards an inside of the seat pad in a first lateral direction that is parallel to the loading surface, is formed; a longitudinal slit portion is provided at an end portion of the lateral slit portion, in a second lateral direction that is orthogonal to the first lateral direction and that is parallel to the loading surface; and the longitudinal slit portion extends from the lateral slit portion towards the loading surface in a thickness direction that is orthogonal to the loading surface.

2 ] The seat pad according to claim 1 , wherein the lateral slit portion, at least in part, becomes gradually smaller in the thickness direction from the outside towards the inside of the seat pad in the first lateral direction.

3 ] The seat pad according claim 1 , wherein the lateral slit portion, at least in part, becomes gradually larger in the thickness direction from the outside towards the inside of the seat pad in the first lateral direction.

4 ] The seat pad according to claim 1 , wherein the lateral slit portion is curved so as to be convex towards the thickness direction.

5 ] The seat pad according to claim 1 , wherein:
inside surfaces delimiting the lateral slit portion comprise a first inside surface that is positioned towards the loading surface in the thickness direction, and a second inside surface that is positioned towards the side opposite to the loading surface in the thickness direction; recess/protrusion portions that are arranged in a restriction direction parallel to the loading surface are formed respectively on the first inside surface and the second inside surface; first recess/protrusion portions are formed as the recess/protrusion portions on the first inside surface; second recess/protrusion portions are formed as the recess/protrusion portions on the second inside surface; and on the first recess/protrusion portions and the second recess/protrusion portions, the recess portions face the protrusion portions in the thickness direction.

6 ] The seat pad according to claim 1 , wherein the lateral slit portions become gradually longer in the first lateral direction from the outside towards the inside in the second lateral direction.

7 ] A seat pad production device that forms a seat pad having a loading surface, comprising:
a plurality of molds; a cavity between the plurality of molds, delimited by respective cavity surfaces of the plurality of molds; and a core provided inside the cavity; wherein the cavity surfaces comprise a loading surface formation portion that forms the loading surface; the core comprises: a lateral slit formation portion that extends from an outside towards an inside of the cavity in a first lateral direction parallel to the loading surface formation portion; and a longitudinal slit formation portion that is provided at an end portion of the lateral slit formation portion, in a second lateral direction orthogonal to the first lateral direction and parallel to the loading surface formation portion; and the longitudinal slit formation portion extends from the end portions towards the loading surface formation portion in a thickness direction orthogonal to the loading surface formation portion.

8 ] The seat pad production device according to claim 7 , wherein:
the lateral slit formation portion protrudes from a cavity surface into the cavity; and the longitudinal slit formation portion extends from the lateral slit formation portion and reach the loading surface formation portion.

9 ] The seat pad production device according to claim 7 , wherein the core is removably attached to the cavity surfaces.

Assignees

• Bridgestone Corp

Inventors

• Kumagai Kenji
• Takahashi Yoshiyuki
• Shinohara Toshimitsu
• Yonezawa Taisuke

Classifications

• A47C7/18

  having foamed material included in cushioning part · CPC title

• B60N2/7017

  characterised by the manufacturing process; manufacturing upholstery or upholstery springs not otherwise provided for · CPC title

• B60N2/70 Primary

  Upholstery springs {; Upholstery} · CPC title

• B29C39/26

  Moulds or cores · CPC title

• A47C27/14

  with foamed material inlays · CPC title