STRUCTURE OF WADDED-UP SEAT TRIM COVER AND METHOD OF MANUFACTURING WADDED-UP SEAT TRIM COVER

• US 20170210261A1
• Filed: 05/11/2015
• Published: 07/27/2017
• Est. Priority Date: 09/29/2014
• Status: Active Grant

• Current Assignee: Tachi-S Company Limited
• Original Assignee: Tachi-S Company Limited
• Inventors: ISHII, Atsushi, MIZUNO, Shinichi
• Granted Patent: US 10,654,382 B2
• Time in Patent Office: Days
• CPC Class Codes: B60N 2/58 Seat coverings
• CPC Class Codes: B60N 2/5816 attachments thereof
• CPC Class Codes: B60N 2/5883 by sewing, stitching or threading
• CPC Class Codes: B60N 2/5891 characterised by the manufacturing process; manufacturing seat coverings not otherwise provided for
• CPC Class Codes: B68G 7/05 Covering or enveloping cores of pads in plastics material using a matching die B29C63/025

Abstract

A structure of wadded-up seat trim cover, having a plurality of trim cover pieces sewn together at one end, each composed of a wadding member and a skin member, includes a bonded portion formed by bonding the skin member to the wadding member made shorter than the skin member, at a position remote, by a prescribed distance, from the end of the wadding member overlapping the skin member; a first sewn portion formed by bending that portion of the skin member, not overlapping the wadding member, along the end of the wadding member and then by sewing the portions of the adjacent skin members together; and second sewn portions formed by bending each end of the adjacent skin member to the back of the trim cover piece at the first sewn portion and then by sewing the adjacent skin members together at overlapping portions.

Claims

1. A structure of wadded-up seat trim cover for covering a seat pad, having a plurality of trim cover pieces sewn together at one end, each composed of a wadding member and a skin member backed with the wadding member, the structure comprising:

a bonded portion formed by bonding the skin member to the wadding member made shorter than the skin member, at a position remote, by a prescribed distance, from the end of the wadding member overlapping the skin member;

a first sewn portion formed by bending that portion of the skin member, which does not overlap the wadding member, along the end of the wadding member and then by sewing the portions of the adjacent skin members together below the adjacent wadding members; and

second sewn portions formed by bending each end of the adjacent skin member to the back of the trim cover piece at the first sewn portion and then by sewing the adjacent skin members together at overlapping portions that clamp the first sewn portion.

2. The structure according to claim 1,

wherein the wadding member is composed of first and second wadding members,

the bonded portion is formed by bonding the skin member to the first wadding member made shorter than the second wadding member and the skin member and clamped between the skin member and the second wadding member at a position remote, by a prescribed distance, from the end of the first wadding member;

the first sewn portion formed is by first bending that portion of the skin member, which does not overlap the first wadding member, along the end of the first wadding member, then overlapping the skin member on the second wadding member, further bending the skin member together with the second wadding member downward, and finally sewing the skin member and the second wadding member together below the first wadding member; and

the second sewn portions are formed by bending back the ends of the skin member and second wadding member to the back of the trim cover piece at the first sewn portion and then by sewing the ends of the skin member and the second wadding member together at overlapping portions that clamp the first sewn portion.

3. The structure according to claim 2, wherein the first wadding member is thicker than the second wadding member.

4. A method of manufacturing a wadded-up seat trim cover for covering a seat pad, having a plurality of trim cover pieces sewn together at one end, each composed of a wadding member and a skin member backed with the wadding member, the method comprising:

a bonding step of bonding the skin member to the wadding member made shorter than the skin member, at a position remote, by a prescribed distance, from the end of the wadding member overlapping the skin member, thereby forming a bonded portion;

a first sewing step of bending that portion of the skin member, which does not overlap the wadding member, along the end of the wadding member and then sewing the adjacent trim over pieces below the adjacent wadding members, thereby forming a first sewn portion; and

a second sewing step of bending each end of the adjacent skin members to the back of the trim cover piece at the first sewn portion and then sewing the adjacent skin members together at overlapping portions that clamp the first sewn portion, thereby forming second sewn portions.

5. The method according to claim 4,

wherein the wadding member is composed of first and second wadding members,

the bonding step is to bond the skin member to the first wadding member made shorter than the second wadding member and the skin member and clamped between the skin member and the second wadding member, at a position remote, by a prescribed distance, from the end of the first wadding member, thereby forming a bonded portion;

the first sewing step is to bend that portion of the skin member, which does not overlap the first wadding member, along the end of the first wadding member, to overlap on the second wadding member, and then to sew the skin member and the second wadding member below the first wadding member, thereby forming a first sewn portion; and

the second sewing step is to bend back the ends of the skin member and second wadding member to the back of the trim cover piece at the first sewn portion and then to sew the ends of the skin member and second wadding member together at overlapping portions that clamp the first sewn portion, thereby forming second sewn portions.

6. The method according to claim 5, wherein the first wadding member is thicker than the second wadding member.