Title:
管継手及び管継手構造
Document Type and Number:
Japanese Patent JP7299853
Kind Code:
B2
Abstract:
To reduce a risk that an excessive load is applied on a loose flange while securing seal performance, in a pipe joint including a resin-made stub end and the resin-made loose flange.SOLUTION: A pipe joint 13 is arranged at an end part 12 of a pipe 10, and joined to a joining mating pipe 20. A resin-made loose flange 40 is fit into an external periphery of a resin-made stub end 30 of the pipe joint 13. An annular recess 42 is formed at a center hole 41 of the loose flange 40, and a flare part 32 of the stub end 30 is accepted into the annular recess 42. In a state that a step face 42d of the annular recess 42 abuts on a back face 32d of the flare part 32, a stub face 30a oriented to the mating pipe 20 of the stub end 30 is not flush with respect to a flange face 40a of the loose flange 40 within a prescribed irregular range progressing along a pipe axis L. An upper limit of the irregular rotation number at a recessive side is 0.5 mm, and an upper limit at a protrusive side is 5.0 mm.SELECTED DRAWING: Figure 4
Inventors:
Takeshi Kato
Hiroaki Kondo
Hiroaki Kondo
Application Number:
JP2020057989A
Publication Date:
June 28, 2023
Filing Date:
March 27, 2020
Export Citation:
Assignee:
Sekisui Chemical Co.,Ltd.
International Classes:
F16L23/02; F16L23/032; F16L47/14
Domestic Patent References:
| JP7042885A | ||||
| JP9096387A | ||||
| JP50020231U | ||||
| JP6320620A | ||||
| JP2008057593A | ||||
| JP2011179680A |
Attorney, Agent or Firm:
Noboru Watanabe
Harada Thirty Yoshi
Tetsumi Aono
Harada Thirty Yoshi
Tetsumi Aono
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