Title:
PIPE JOINT STRUCTURE, AND AIR CONDITIONER
Document Type and Number:
WIPO Patent Application WO/2020/129212
Kind Code:
A1
Abstract:
This pipe joint structure is provided with a union, a flare nut having a female screw portion formed on one end side thereof in an axial direction and a first annular surface formed at the other end thereof in the axial direction, a cylindrical sleeve which accommodates the flare nut with freedom to rotate and freedom to reciprocate, a rotating ring which has a second annular surface facing the first annular surface and which is attached to the sleeve in such a way as to be free to rotate with respect to the union, and an urging member configured to urge the flare nut toward the rotating ring, wherein: a claw portion projecting toward the flare nut is provided on the second annular surface; and the first annular surface is provided with an engaging surface formed facing in one direction in the circumferential direction, and a helical inclined surface which is adjacent to the engaging surface in the circumferential direction, and which is formed with a helical shape that is inclined in such a way as to face in the other direction in the circumferential direction.
Inventors:
OBA YASUSHI (JP)
GOTO TAKUYA (JP)
GOTO TAKUYA (JP)
Application Number:
PCT/JP2018/046984
Publication Date:
June 25, 2020
Filing Date:
December 20, 2018
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
F16L19/06; F16L13/14; F24F1/26
Domestic Patent References:
| WO2009078461A1 | 2009-06-25 |
Foreign References:
| JPH10502993A | 1998-03-17 | |||
| JPH05215280A | 1993-08-24 | |||
| JP2018071867A | 2018-05-10 | |||
| US5215336A | 1993-06-01 | |||
| JPS6224091A | 1987-02-02 | |||
| JP2012102794A | 2012-05-31 |
Attorney, Agent or Firm:
KISA PATENT & TRADEMARK FIRM (JP)
Download PDF: