Dissimilar material joining structure

Patent metadata

Field	Value
Publication number	US-9651076-B2
Application number	US-201514955664-A
Country	US
Kind code	B2
Filing date	Dec 1, 2015
Priority date	Sep 10, 2015
Publication date	May 16, 2017
Grant date	May 16, 2017

Abstract

Disclosed is a joining structure for joining dissimilar materials, such as a plastic plate and a metal plate. The joining structure is positioned or formed at where a plastic plate and a metal plate are joined. The joining structure includes: a self-piercing rivet piercing through the plastic plate to be pressed onto the metal plate and subjected to plastic deformation. In particular, the plastic plate includes a self-healing capsule containing a self-healing agent in a base material of a plastic resin and a catalyst being polymerized with the self-healing agent. The self-healing capsule is broken by a crack of the base material at a periphery of a pierced portion of the plastic plate, and the self-healing agent flowing out of the self-healing capsule fills a gap of the crack and causes polymerization with the catalyst to cure the crack portion.

First claim

What is claimed is:

1. A joining structure comprising:
plastic plate comprising plastic or a plastic plate;
metal plate that comprises metal and is different from the plastic plate; and
a self-piercing rivet piercing through the plastic plate to be pressed onto the metal plate and subjected to plastic deformation,
wherein the plastic plate comprises a self-healing capsule containing a self-healing agent in a base material of a plastic resin and a catalyst being polymerized with the self-healing agent, wherein the self-healing capsule is broken by a crack of the base material at a periphery of a pierced portion of the plastic plate, and
wherein the self-healing agent flowing out of the self-healing capsule fills a gap of the crack and causes polymerization with the catalyst to cure the crack portion.

2. The joining structure of claim 1 , wherein the self-healing agent polymerizes with the catalyst and adheres a surface of the self-piercing rivet and the pierced portion of the plastic plate to each other.

3. The joining structure of claim 1 , wherein the plastic plate comprises an adhesive capsule containing an adhesive in the base material.

4. The joining structure of claim 3 , wherein the adhesive capsule is broken at a pierced portion of the plastic plate, through which the self-piercing rivet pierces, and a surface of the self-piercing rivet and the pierced portion of the plastic plate are adhered to each other by the adhesive flowing out of the adhesive capsule.

5. The joining structure of claim 4 , wherein the self-piercing rivet includes a head portion supporting the plastic plate, and a shank portion integrally connected to the head portion and piercing through the plastic plate, and a surface of the shank portion and the pierced portion of the plastic plate are adhered by the adhesive.

6. The joining structure of claim 4 , wherein the adhesive flowing out while the adhesive capsule is broken is provided in the gap of the crack.

7. The joining structure of claim 1 , wherein the self-healing agent comprises a mixture of dicyclopentadiene or polydimethylsiloxane and polydiethoxysiloxane.

8. The joining structure of claim 7 , wherein the catalyst comprises bis(tricyclohexylphosphine)benzylidine ruthenium dichloride or di-n-butyltin dilaurate.

9. The joining structure of claim 8 , wherein a capsule outer cover of the self-healing capsule and the adhesive capsule comprises urea-formaldehyde.

10. The joining structure of claim 1 , wherein the plastic plate comprises a glass fiber reinforced plastic (GFRP) or a carbon fiber reinforced plastic (CFRP).

11. A vehicle part that comprises a joining structure of claim 1 .

12. The vehicle part of claim 11 is a vehicle body panel.

13. A vehicle comprising a vehicle part of claim 11 .

Assignees

• Hyundai Motor Co Ltd

Inventors

• Jang Junho

Classifications

• F16B19/086 Primary

  Self-piercing rivets · CPC title

• F16B5/045 Primary

  without the use of separate rivets · CPC title

• C09D4/00

  Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond {; Coating compositions, based on monomers of macromolecular compounds of groups C09D183/00 - C09D183/16} · CPC title

• F16B5/04

  by means of riveting (rivets F16B19/04) · CPC title

• F16B11/006

  by gluing (gluing of plastics material B29C65/48) · CPC title