Joining structure

Patent metadata

Field	Value
Publication number	US-10012254-B2
Application number	US-201414889371-A
Country	US
Kind code	B2
Filing date	May 15, 2014
Priority date	May 17, 2013
Publication date	Jul 3, 2018
Grant date	Jul 3, 2018

Abstract

A joint structure is a joint structure between a first member having a pillared end part made of a fiber-reinforced plastic and a second member different from the first member. The end part of the first member is reversely tapered in an axial direction, while a joining member is disposed along a reversely tapered form of the end part. The second member is provided in contact with an end face of the first member and connected to the joining member. A plurality of fibers substantially extending in the axial direction of the end part of the first member are provided within the end part and disposed to form a larger angle with the axial direction of the end part of the first member as they are disposed to be closer to a surface constituting the reversely tapered form in a radial direction of the end part.

First claim

The invention claimed is:

1. A joint structure between a first member, made of a fiber-reinforced plastic, having a pillared end part and a second member different from the first member;
wherein the end part of the first member is reversely tapered in an axial direction;
wherein the joint structure comprises a joining member disposed along a reversely tapered form of the end part of the first member;
wherein the second member is provided in contact with an end face of the first member and connected to the joining member;
wherein a plurality of fibers are provided within the first member such that, in a part of the first member other than the end part, the plurality of fibers substantially extend in the axial direction of the first member; and
wherein, in the end part of the first member, the plurality of fibers are disposed to form a larger angle relative to the axial direction of the first member as they are disposed to be closer, in a radial direction, to an outer peripheral surface constituting the reversely tapered form of the end part.

2. The joint structure according to claim 1 , wherein the reversely tapered form increases a radial size of the outer peripheral surface toward to the end face of the first member.

3. The joint structure according to claim 2 , wherein the first member has a portion with an outer diameter not larger than the outer diameter of the reversely tapered form in a part of circumferential direction at the reversely tapered part in the outer peripheral surface, the first member and the joining member mating each other.

4. The joint structure according to claim 2 , wherein the end part of the first member is tubular; and
wherein a reinforcement member for supporting an inner peripheral surface is provided within the tubular end part of the first member.

5. The joint structure according to claim 1 , wherein the end part of the first member is tubular;
wherein the reversely tapered form reduces a radial size of an inner peripheral surface toward to the end face of the first member; and
wherein the joining member is disposed within the tubular end part of the first member.

6. The joint structure according to claim 5 , further comprising a reinforcement member wound circumferentially about the outer peripheral surface of the tubular end part of the first member.

7. The joint structure according to claim 1 , wherein the angle formed by the reversely tapered end part with the axial direction of the first member is any of 3° to 5°.

8. The joint structure according to claim 1 , wherein the first member is made of a carbon-fiber-reinforced plastic.

9. The joint structure according to claim 1 , wherein the second member is made of a metal.

Assignees

• Japan Agency Marine Earth Sci
• Toray Industries

Inventors

• Ito Hisao
• Kato Kazumasa
• Ochi Yutaka
• Hosokawa Naofumi
• Hagita Hirohisa
• KAWAUCHI Shigekazu

Classifications

• B29C66/72141

  Fibres of continuous length · CPC title

• B29K2101/00

  Use of unspecified macromolecular compounds as moulding material {(use of unspecified rubbers B29K2021/00)} · CPC title

• F16B7/02 Primary

  with conical parts · CPC title

• B29C65/561

  using screw-threads being integral at least to one of the parts to be joined · CPC title

• B29C66/5344

  said single elements being substantially annular, i.e. of finite length, e.g. joining flanges to tube ends (B29C66/5346 takes precedence) · CPC title