Title:
JOINT FOR PIPING
Document Type and Number:
Japanese Patent JP2018044594
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a joint for piping capable of reliably and firmly connecting an end part of piping to a joint member being a female side joint.SOLUTION: A joint member 12 constituting a joint 10 for piping has a piping fitting hole 16 to which a pipe 14 for piping is connected, and on a boundary surface 34 between a first pore 26 formed on one end surface side of the joint member and a second pore 28 formed on the other end surface side and having a smaller diameter than the first pore part 26, a knurling part 36 is provided. The knurling part 36 has a plurality of projections extending along a radial direction at the piping fitting hole 16, and is formed into an uneven shape along a circumferential direction. When a diameter of the pipe 14 for piping is expanded by a punch, a step part 52 contacts with and bites into the knurling part 36, thereby enabling reliable and firm fixation.SELECTED DRAWING: Figure 1
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Inventors:
ISHIKAWA MASAKI
Application Number:
JP2016179119A
Publication Date:
March 22, 2018
Filing Date:
September 14, 2016
Export Citation:
Assignee:
KEIHIN THERMAL TECHNOLOGY CORP
International Classes:
F16L13/14; F16L19/02
Attorney, Agent or Firm:
Takehiro Chiba
Toshiyuki Miyadera
Takayuki Chima
Shuji Ouchi
Yasuharu Nakasone
Shiro Sakai
Toru Sekiguchi
Toshiyuki Miyadera
Takayuki Chima
Shuji Ouchi
Yasuharu Nakasone
Shiro Sakai
Toru Sekiguchi