SEWING METHOD FOR A COVER MATERIAL

• US 20130305974A1
• Filed: 05/15/2013
• Published: 11/21/2013
• Est. Priority Date: 05/16/2012
• Status: Active Grant

• Current Assignee: Toyota Boshoku Kabushiki Kaisha
• Original Assignee: Toyota Boshoku Kabushiki Kaisha
• Inventors: ISHII, Atsushi
• Granted Patent: US 8,739,713 B2
• Time in Patent Office: Days
• US Class Current: 112/475.08
• CPC Class Codes: B60N 2/5891 characterised by the manufacturing process; manufacturing seat coverings not otherwise provided for
• CPC Class Codes: D05B 23/00 Sewing apparatus or machines not otherwise provided for for making zip closures A44B19/00

Abstract

A sewing machine is provided with a sensor member, and a feed rate of cover pieces is changed after detecting a conductive thread that is arranged in front, in a direction of travel, of a sewing needle. A position through which the sewing needle will pass is changed to a position other than a position where the conductive thread is arranged, which is different from an initially set position.

Claims

1. A sewing method for a cover material, comprising:

sewing a plurality of cover pieces together with a sewing machine;

arranging a plurality of conductive threads that extend linearly parallel to each other in at least one cover piece, from among the plurality of cover pieces, when forming a cover material that covers a vehicle structure member;

forming a stitch line formed of a plurality of perforations that crosses the conductive threads, by passing a sewing needle of the sewing machine through the cover pieces at a predetermined pitch, while moving the cover pieces at a predetermined feed rate with respect to the sewing machine; and

providing the sewing machine with a sensor member, and changing a position through which the sewing needle will pass to a position other than a position where the conductive threads are arranged, which is different from an initially set position, by changing the feed rate of the cover pieces, after detecting one of the conductive threads that is arranged in front, in a direction of travel, of the sewing needle.

2. The sewing method according to claim 1, wherein the feed rate of the cover pieces is changed such that a size of the plurality of perforations changes.

3. The sewing method according to claim 1, wherein the feed rate of the cover pieces is changed such that the sewing needle is arranged at top dead center at a position where the one conductive thread detected by the sensor member is arranged.

4. The sewing method according to claim 1 wherein the feed rate of the cover pieces is changed after it is detected that the one conductive thread is in a planned position through which the sewing needle will pass.