Surface skin, molded product, and vehicle seat

Patent metadata

Field	Value
Publication number	US-11760240-B2
Application number	US-202117556829-A
Country	US
Kind code	B2
Filing date	Dec 20, 2021
Priority date	Feb 8, 2021
Publication date	Sep 19, 2023
Grant date	Sep 19, 2023

Abstract

A surface skin with which a foamed body is integrally foam-molded and which covers the foamed body includes: a plurality of surface skin members; a first thread passing through at least a part of a needle hole extended through the surface skin members so as to sew the surface skin members together; and a second thread inter-looping or interlacing with the first thread so as to sew the surface skin members together in cooperation with the first thread. The first thread is threaded through an eye of a needle. The second thread is formed by warp weaving or braiding polyester or nylon fiber pieces and is stretchable enough to fill in the needle hole.

First claim

What is claimed is:

1. A surface skin with which a foamed body is integrally foam-molded and which covers the foamed body, comprising:
a plurality of surface skin members;
a first thread passing through at least a part of a needle hole extended through the surface skin members so as to sew the surface skin members together; and
a second thread sewing the surface skin members together by interlacing with the first thread,
wherein the first thread is a thread threaded through an eye of a needle; and
the second thread is a thread formed by warp weaving or braiding a polyester or nylon fiber and having stretchability to fill in the needle hole.

2. The surface skin according to claim 1 , wherein the second thread is a thread which is formed by twisting two pieces of fiber to form a twofold thicker thread, followed by twisting two pieces of the twofold thicker thread to form a four-fold thicker thread, followed by braiding three pieces of the four-fold thicker thread to form a twelve-fold thicker thread.

3. The surface skin according to claim 2 , wherein the second thread is tightly braided.

4. The surface skin according to claim 2 , wherein the second thread is loosely braided.

5. The surface skin according to claim 1 , wherein the second thread is a thread which is formed by twisting two pieces of fiber to form a twofold thicker thread, followed by warp braiding four pieces of the twofold thicker thread.

6. A molded product comprising:
the surface skin according to claim 1 ; and
a foamed body integrally foam-molded with the surface skin and covered by the surface skin.

7. A vehicle seat comprising:
the molded product according to claim 6 ;
a seat cushion; and
a seat back,
wherein the molded product is a head rest.

Assignees

• Tachi S Co
• Azuma Co Ltd

Inventors

• Sasaki Seiichi
• Takeda Toshiyuki

Classifications

• B60N2/58 Primary

  Seat coverings · CPC title

• B60N2/7017 Primary

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

• B60N2/5883 Primary

  by sewing, stitching or threading · CPC title

• D02G3/02

  Yarns or threads characterised by the material or by the materials from which they are made · CPC title

• D04B21/00

  Warp knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes · CPC title