Fiber reinforced resin joined body, intermediate body, and fastening rod

Patent metadata

Field	Value
Publication number	US-9556891-B2
Application number	US-201514888358-A
Country	US
Kind code	B2
Filing date	Feb 27, 2015
Priority date	Apr 24, 2014
Publication date	Jan 31, 2017
Grant date	Jan 31, 2017

Abstract

There is provided a joined body in which two or more members Yi including a fitting hole are fastened, in which a fastening rod including reinforcing fibers and a thermoplastic resin is positioned in the fitting hole, the fastening rod is caulked by heat, and the members Yi are caulking-fastened.

First claim

The invention claimed is:

1. A joined body in which two or more members Yi are fastened, wherein
the two or more members Yi include a first member and a second member, and the first member and the second member respectively include a first fitting hole and a second fitting hole through which a fastening rod including reinforcing fibers and a thermoplastic resin passes,
while in a state where one end portion of the fastening rod is positioned at a first member side and the other end portion of the fastening rod is positioned at a second member side, the other end portion of the fastening rod is caulked by heat to fasten the first member and the second member so that the members Yi are caulking-fastened, and the fastening rod includes one or more protrusions which are engaged with at least one of the first fitting hole and the second fitting hole,
an average fiber length of the reinforcing fibers is in a range of 0.01 mm to 10 mm,
wherein the protrusion is formed in a region facing a circumferential surface of at least one of the first fitting hole and the second fitting hole,
the protrusion is in the shape of a rib extending along a central axis of the fastening rod, and
wherein a protruding size of the protrusion increases as being closer to the one end portion.

2. The joined body according to claim 1 ,
wherein the thermal caulking is performed by applying ultrasonic waves.

3. The joined body according to claim 1 ,
wherein a separating load of the fastening rod from at least one of the first fitting hole and the second fitting hole is greater than or equal to 1 N.

4. The joined body according to claim 1 , wherein the average fiber length of the reinforcing fibers is in a range of 0.01 mm to 5 mm.

5. The joined body according to claim 1 , wherein the average fiber length of the reinforcing fibers is in a range of 0.01 mm to 3 mm.

Assignees

• Teijin Ltd

Inventors

• Toyozumi Takashi
• Hirata Masumi
• Sano Hiroki
• Ohki Takeru
• Shi Jianwei

Classifications

• B29C65/7855

  Provisory fixing · CPC title

• B29C66/21

  said joint lines being formed by a single dot or dash or by several dots or dashes, i.e. spot joining or spot welding · CPC title

• B29C66/81423

  being concave · CPC title

• B29C66/7212

  characterised by the composition of the fibres · CPC title

• B29C66/81429

  comprising a single tooth · CPC title