Manufacturing method of assembly

Patent metadata

Field	Value
Publication number	US-11305494-B2
Application number	US-202016808870-A
Country	US
Kind code	B2
Filing date	Mar 4, 2020
Priority date	Apr 3, 2019
Publication date	Apr 19, 2022
Grant date	Apr 19, 2022

Abstract

In a manufacturing method of an assembly, the assembly including a metal part and a pipe, the pipe including a material containing a resin, an adhesive is first adhered to an outer circumferential surface of the pipe and a metal part covering at least a portion of an outer circumferential surface of the pipe. Here, an area to which the adhesive is adhered on the outer circumferential surface of the pipe is defined as an adhesion area. Next, by a heat source provided inside the pipe, a target area is heated without interposing the metal part. The target area is located radially interior to the adhesion area and located on an inner circumferential surface of the pipe.

First claim

What is claimed is:

1. A manufacturing method of an assembly, the assembly including a pipe and a metal part, the pipe including a material containing a resin, comprising:
adhering an adhesive to an outer circumferential surface of the pipe and an inner circumferential surface of the metal part covering at least a portion of the outer circumferential surface of the pipe; and
heating a target area by a heat source provided in the pipe without interposing the metal part, the target area being located radially interior to an adhesion area and located on an inner circumferential surface of the pipe, the adhesion area being an area to which the adhesive is adhered on the outer circumferential surface of the pipe,
wherein the metal part is configured for use as a bracket connected to an other part that is distinct from the pipe and the metal part, and
wherein the inner circumferential surface of the metal part registered with the adhesive area is devoid of a hole or cut-out formed in a radial direction for receiving a fastener for fastening the metal part to the pipe.

2. The manufacturing method of the assembly according to claim 1 ,
wherein the resin is a carbon fiber reinforced plastic.

3. The manufacturing method of the assembly according to claim 1 ,
wherein the metal part surrounds the outer circumferential surface of the pipe.

4. The manufacturing method of the assembly according to claim 1 ,
wherein the metal part includes a through hole penetrating the metal part in a direction parallel to an extending direction of the pipe, and the pipe is inserted into the through hole.

5. The manufacturing method of the assembly according to claim 1 ,
wherein a thermal expansion coefficient of the metal part is larger than a thermal expansion coefficient of the pipe.

6. The manufacturing method of the assembly according to claim 1 ,
wherein the metal part is composed of aluminum.

7. The manufacturing method of the assembly according to claim 1 ,
wherein the metal part is arranged on an end of the pipe.

8. The manufacturing method of the assembly according to claim 1 ,
wherein the heat source comprises a heated gas flowing into an inside of the pipe.

9. The manufacturing method of the assembly according to claim 1 ,
wherein the heat source is configured to be expanded by high-temperature air injected into the heat source,
wherein a heating of the target area is performed by
injecting the high-temperature air into the heat source provided in the pipe to expand the heat source, and
pressurizing the target area by the heat source that is expanded, the target area being located radially interior to the adhesion area and located on the inner circumferential surface of the pipe.

10. The manufacturing method of the assembly according to claim 1 , wherein the assembly is included into a body structure of an automobile.

Assignees

• Futaba Ind Co Ltd

Inventors

• Yasuda Keigo

Classifications

• B29C65/7802

  Positioning the parts to be joined, e.g. aligning, indexing or centring · CPC title

• B62D29/005

  preformed metal and synthetic material elements being joined together, e.g. by adhesives · CPC title

• B29L2023/00

  Tubular articles (B29L2024/00 takes precedence {; catheters B29L2031/7542}) · CPC title

• B29C66/1122

  Single lap to lap joints, i.e. overlap joints (B29C66/45, B29C66/472, B29C66/52272 take precedence) · CPC title

• B29L2023/22

  Tubes or pipes, i.e. rigid (bent tubes not for use as pipe couplings B29L2023/004) · CPC title