Resin component fastener structure and molding device therefor

Patent metadata

Field	Value
Publication number	US-10072692-B2
Application number	US-201314649040-A
Country	US
Kind code	B2
Filing date	Apr 1, 2013
Priority date	Dec 3, 2012
Publication date	Sep 11, 2018
Grant date	Sep 11, 2018

Abstract

A fastening portion structure of a resin part including a tubular member integrally embedded therein by insert molding, and an insertion hole formed inside the tubular member, in which a screw member is inserted through the insertion hole, and the tubular member is compressed in an axial direction by the screw member, so that the resin part is fixed to a predetermined member. An inner peripheral surface of the tubular member is exposed in a region from one end to an intermediate position in the axial direction of the tubular member, but is covered by a resin in a region from the intermediate position to the other end, and the insertion hole is formed in a resin covering the inner peripheral surface of the tubular member.

First claim

The invention claimed is:

1. A fastening portion structure of a resin part including a tubular member integrally embedded therein by insert molding, and an insertion hole formed inside the tubular member, wherein a screw member is inserted through the insertion hole, and the tubular member is compressed in an axial direction by the screw member, so that the resin part is fixed to a predetermined member, and wherein
an inner peripheral surface of the tubular member is exposed in a region from one end to an intermediate position in the axial direction of the tubular member, but is covered by a resin in a region from the intermediate position to the other end, and the insertion hole is formed in a resin covering the inner peripheral surface of the tubular member,
the tubular member comprises a cutout at an edge of the tubular member,
a resin inside the tubular member is continuous with a resin outside the tubular member via the cutout formed at the edge of the tubular member,
an axial length of the cutout is shorter than an entire length L of the tubular member,
the tubular member comprises the cutout at each of both ends in the axial direction thereof and comprises a through hole in intermediate portion in the axial direction thereof, and the resin inside the tubular member is continuous with the resin outside the tubular member through a part of the cutouts and a part of the through hole, and
the cutouts and the through hole are formed so that the tubular member has a symmetrical shape with respect to center in the axial direction thereof.

2. The fastening portion structure of a resin part according to claim 1 , wherein
the tubular member comprises the cutout at the other end, and the resin inside the tubular member is continuous with the resin outside the tubular member via the cutout formed at the other end of the tubular member.

3. The fastening portion structure of a resin part according to claim 1 , wherein
an axial length S of the exposed region of the inner peripheral surface of the tubular member is ½ or more of the entire length L of the tubular member.

4. A molding apparatus for molding a resin part comprising the fastening portion structure according to claim 1 integrally with the tubular member by insert molding, the molding apparatus comprising:
a core comprising
a positioning portion that has an outer peripheral shape corresponding to an inner peripheral shape of the tubular member, and that is relatively fitted in the tubular member to position the tubular member, and
a protruding molding portion that is formed integrally with the positioning portion so as to protrude in the axial direction from the positioning portion, and that is used to form the insertion hole, wherein
the positioning portion side of the core is fixedly attached to one of a pair of molding dies.

5. The fastening portion structure of a resin part according to claim 1 , wherein an outer peripheral surface as a whole of the tubular member is covered by the resin.

Assignees

• Tsuzuki Hiroaki
• YANAGIYA Tomonori
• Toyota Tekko Kk

Inventors

• Tsuzuki Hiroaki
• YANAGIYA Tomonori

Classifications

• F16B29/00 Primary

  Screwed connection with deformation of nut or auxiliary member while fastening ({Nuts fastened to surfaces by riveting F16B37/065}; members deformed for locking screws, bolts or nuts F16B39/22) · CPC title

• F16B19/02 Primary

  Bolts or sleeves for positioning of machine parts, e.g. notched taper pins, fitting pins, sleeves, eccentric positioning rings · CPC title

• F16B5/025

  specially designed to compensate for misalignement or to eliminate unwanted play · CPC title

• B29C45/14311

  using means for bonding the coating to the articles (B29C45/14795 takes precedence) · CPC title

• B29L2009/00

  Layered products · CPC title