Tire and tire manufacturing method

Patent metadata

Field	Value
Publication number	US-9994075-B2
Application number	US-201414784580-A
Country	US
Kind code	B2
Filing date	Apr 17, 2014
Priority date	Apr 18, 2013
Publication date	Jun 12, 2018
Grant date	Jun 12, 2018

Abstract

A tire includes: a tire case serving as an example of a circular tire frame member that is formed using a frame resin material; and a reinforcing cord member that is disposed at an outer circumference of the tire case, that is configured by a reinforcing cord covered with a resin covering layer, that is wound along a tire circumferential direction so as to form a spiral shape, that is bonded to the tire case, and in which tire axial direction adjacent portions of the reinforcing cord member are bonded together.

First claim

The invention claimed is:

1. A tire comprising:
a circular tire frame member that is formed using a frame resin material; and
a reinforcing cord member that is disposed at an outer circumference of the tire frame member, that is configured by a reinforcing cord covered with a resin covering layer, that is wound along a tire circumferential direction so as to form a spiral shape, that is bonded to the tire frame member, and in which tire axial direction adjacent portions of the reinforcing cord member are bonded together, wherein:
the resin covering layer has thermoplasticity,
in the reinforcing cord member, the resin covering layer is welded to the tire frame member, and the tire axial direction adjacent portions are welded together, and
a thickness of the resin covering layer, at an opposite side of the resin covering layer from a side that is bonded to the tire frame member, is greater than a thickness of the resin covering layer at the side that is bonded to the tire frame member.

2. The tire of claim 1 , wherein:
at the outer circumference of the tire frame member, a portion at which the reinforcing cord member is disposed has a flat-shape in a tire axial direction cross-section.

3. The tire of claim 1 , wherein the frame resin material has thermoplasticity.

4. A tire manufacturing method comprising:
a tire frame member forming process in which a circular tire frame member is formed using a frame resin material; and
a reinforcing cord member winding process in which, while winding a reinforcing cord member that is configured by a reinforcing cord covered with a resin covering layer onto an outer circumference of the tire frame member along a tire circumferential direction so as to form a spiral shape, the reinforcing cord member is bonded to the tire frame member, and tire axial direction adjacent portions of the reinforcing cord member are bonded together, wherein:
the resin covering layer has thermoplasticity, and
in the reinforcing cord member winding process, while the resin covering layer of the reinforcing cord member is being heated and melted, the reinforcing cord member is wound onto the outer circumference of the tire frame member in a tire circumferential direction so as to form a spiral shape and is pressed against the outer circumference, thereby welding the tire frame member and the resin covering layer of the reinforcing cord member together and deforming the reinforcing cord member during pressing such that tire axial direction adjacent portions of the resin covering layer are placed in contact with, and welded to, each other.

Assignees

• Bridgestone Corp

Inventors

• Kon Seiji
• Hasegawa Keiichi
• Kouno Yoshihide

Classifications

• B60C2009/2238

  Physical properties or dimensions of the ply coating rubber · CPC title

• B60C5/007

  made from other material than rubber · CPC title

• B60C2009/2035

  built-up by narrow strips · CPC title

• B29D30/20

  by the flat-tyre method, i.e. building on cylindrical drums · CPC title

• B29D30/3028

  by feeding a continuous band and winding it helically, i.e. the band is fed while being advanced along the drum axis, to form an annular element (winding and joining, helically in general B29C53/58) · CPC title