Title:
樹脂管用管継手
Document Type and Number:
Japanese Patent JP7370571
Kind Code:
B2
Abstract:
To provide a pipe joint for a resin pipe easily separating the resin pipe and a core.SOLUTION: A pipe joint 1 for a resin pipe includes a lock ring 30 equipped with a lock portion 32 capable of expanding/contracting in a diameter direction, and a core 50 positioned on an inner peripheral side of the lock ring 30. The core 50 is equipped with a cylindrical core body 51 extending coaxially with a large-diameter cylinder portion 11 of a pipe joint body 10. The core body 51 is equipped with a projection strip forming portion 54 forming a spiral projection strip 53 from an end in a first direction X1, and a cylinder portion 55. When an end part in a second direction X2 of a resin pipe 100 is inserted between the lock ring 30 and the core body 51 and a bag nut 20 is screwed into a lock position 20A, a tapered inner peripheral surface 22a presses the lock portion 32 on the inner side in a diametrical direction to make a claw 38 bitten into an outer peripheral surface 100a of the resin pipe 100, and a projection strip 53 bitten into an inner peripheral surface 100b of the resin pie 100.SELECTED DRAWING: Figure 3
Inventors:
Akiichi Maruyama
Application Number:
JP2019173706A
Publication Date:
October 30, 2023
Filing Date:
September 25, 2019
Export Citation:
Assignee:
Nihon Valve Co., Ltd.
International Classes:
F16L33/23; F16L19/08
Domestic Patent References:
| JP2008267549A | ||||
| JP2011017356A | ||||
| JP2015086979A | ||||
| JP58172178U | ||||
| JP2008528890A | ||||
| JP2009036239A | ||||
| JP2010281411A |
Foreign References:
| WO2013058358A1 | ||||
| US4229029 | ||||
| US5498043 |
Attorney, Agent or Firm:
Toru Kawai
Nobuko Kawaguchi
Nobuko Kawaguchi
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