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Patent Searching and Data


Title:
CONNECTION STRUCTURE OF RESIN PIPE AND TANK
Document Type and Number:
Japanese Patent JP2003021290
Kind Code:
A
Abstract:

To provide a highly sealable connection structure for caulking and fixing a tip part of a resin pipe on a pipe fit port 1a of a metallic tank 1 via a ring connection cup 2 to prevent the resin pipe 4 from rotating with a simple structure and to easily form an O-ring holding part on the periphery of the tip part of the resin pipe.

An expanding diameter part 6 is formed on the other end of the connection cup 2 to be connected and fixed on the pipe fitting port 1a of the tank 1 via a stepped part 6a. A caulked part 7 is formed on the edge of the expanding diameter part 6, and a plurality of cutoff parts for preventing rotation 8a are formed on the caulked part 7. An engaging part 5 is formed on the resin pipe 4 on the tip part side of an outer flange part 3, and a plurality of reversed L-shaped parts 8 are protruded on the outer periphery of the outer flange part 3. The root part of the pipe 4 is matched to the cutout part 8a, and the O-ring holding part 10 is formed between the outer flange part 3 and the stepped part 6a. There is no annular groove formed on the outer periphery of the engaging part 5.


Inventors:
IGAMI TAKASHI
Application Number:
JP2001000209899
Publication Date:
January 24, 2003
Filing Date:
July 10, 2001
Export Citation:
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Assignee:
TOYO RADIATOR CO LTD
International Classes:
F16L13/14; F16B9/02; F16L41/08; F28F9/02; F28F9/04; F28F21/06; (IPC1-7): F16L41/08; F16B9/02
Domestic Patent References:
JP2001280558A2001-10-10
JPH11236985A1999-08-31
JPH09257166A1997-09-30
JPH08159688A1996-06-21
JP2001280558A2001-10-10
JPH11236985A1999-08-31
JPH09257166A1997-09-30
JPH08159688A1996-06-21
Attorney, Agent or Firm:
窪田 卓美