Structure of wadded-up seat trim cover and method of manufacturing wadded-up seat trim cover

• US 10,654,382 B2
• Filed: 05/11/2015
• Issued: 05/19/2020
• 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
• Primary Examiner(s): Ference, James M
• Application Number:
  US15/515,439
• Publication Number:
  US 20170210261A1
• Time in Patent Office: 1,835 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, the structure having a plurality of trim cover pieces comprising a first trim cover piece and a second trim cover piece, each of the first and second trim cover pieces having an end and being sewn together at each said end, each of the first and second trim cover pieces composed of a first wadding member, a second wadding member and a skin member backed with the first wadding member and the second wadding member, each of the first wadding member, the second wadding member and the skin member having a length, wherein the length of the first wadding member is less than the length of each of the second wadding member and the skin member, such that a portion of the skin member does not overlap the first wadding member, the structure comprising:

a first bonded portion comprising the skin member of the first trim cover piece bonded to the first wadding member of the first trim cover piece such that the first wadding member of the first trim cover piece is clamped between the skin member of the first trim cover piece and the second wadding member of the first trim cover piece at a position spaced apart from an end of the first wadding member of the first trim cover piece;

a second bonded portion comprising the skin member of the second trim cover piece bonded to the first wadding member of the second trim cover piece such that the first wadding member of the second trim cover piece is clamped between the skin member of the second trim cover piece and the second wadding member of the second trim cover piece at a position spaced apart from an end of the first wadding member of the second trim cover piece;

a first sewn portion comprising a portion of each skin member of the first and second trim cover pieces being bent along the ends of the first wadding members of the first and second trim cover pieces and overlapped by the skin members of the first and second trim cover pieces on the second wadding members of the first and second trim cover pieces, the skin members of the first and second trim cover pieces together with the second wadding members of the first and second trim cover pieces bent downward, and the skin members of the first and second trim cover pieces and the second wadding members of the first and second trim cover pieces sewn together below the first wadding members of the first and second trim cover pieces; and

a plurality of second sewn portions each comprising ends of the skin members of the first and second trim cover pieces and second wadding members of the first and second trim cover pieces bent to a back of a respective one of the first and second trim cover pieces at the first sewn portion and the ends of the skin members of the first and second trim cover pieces and the second wadding members of the first and second trim cover pieces sewn together at an overlapping portion that clamps the first sewn portion.

2. The structure according to claim 1, wherein each of the first wadding members of the first and second trim cover pieces has a thickness that is greater than a thickness of each of the second wadding members of the first and second trim cover pieces.

3. A method of manufacturing a wadded-up seat trim cover for covering a seat pad, the wadded-up seat trim cover having a plurality of trim cover pieces comprising a first trim cover piece and a second trim cover piece, each of the first and second trim cover pieces having an end and being sewn together at each said end, each of the first and second trim cover pieces composed of a first wadding member, a second wadding member and a skin member backed with the first wadding member and the second wadding member, each of the first wadding member, the second wadding member and the skin member having a length, wherein the length of the first wadding member is less than the length of each of the second wadding member and the skin member, such that a portion of the skin member does not overlap the first wadding member, the method comprising:

a bonding step of bonding each of the skin members of the first and second trim cover pieces to a respective first wadding member of the first and second trim cover pieces such that each of the respective first wadding members is clamped between the skin members of the first and second trim cover pieces and a respective second wadding member of the first and second trim cover pieces at a position spaced apart from a respective end of the first wadding member of the first and second trim cover pieces, thereby forming a plurality of bonded portions;

a first sewing step of bending a portion of each of the skin members of the first and second trim cover pieces along a respective end of each of the first wadding members of the first and second trim cover pieces, to overlap on the second wadding members of the first and second trim cover pieces, and then sewing the skin members of the first and second trim cover pieces and the second wadding members of the first and second trim cover pieces below the first wadding members of the first and second trim cover pieces, thereby forming a first sewn portion; and

a second sewing step of bending back ends of the skin members of the first and second trim cover pieces and the second wadding members of the first and second trim cover pieces to a back of the first and second trim cover pieces at the first sewn portion and then sewing the ends of the skin members of the first and second trim cover pieces and second wadding members of the first and second trim cover pieces together at an overlapping portion that clamps the first sewn portion, thereby forming a plurality of second sewn portions.

4. The method according to claim 3, wherein each of the first wadding members of the first and second trim cover pieces has a thickness that is greater than a thickness of each of the second wadding members of the first and second trim cover pieces.