Title:
フレア継手構造及びフレア管の製造方法
Document Type and Number:
Japanese Patent JP7421908
Kind Code:
B2
Abstract:
A flare fitting structure capable of preventing irregularity on a flare inclined plane of a flared tube and maintaining a high seal surface pressure is provided.In a flare fitting structure (1) in which a flared portion (12) that is formed in an end of a flared tube (10) and faces a connected member (2) is pressed by a flared nut (3) to connect the flared tube (10) to the connected member (2), the flared tube (10) is formed by flaring a cylindrical tube (40) including an original tube (41) and a coating layer (42) that coats a surface of the original tube (41), the flared portion (12) includes a flare inclined plane (13) that faces the connected member (2), and the flare inclined plane (13) is formed with a machining portion (43) in which the original tube (41) is exposed by a machining operation.
Inventors:
Iichiro Seino
Application Number:
JP2019206452A
Publication Date:
January 25, 2024
Filing Date:
November 14, 2019
Export Citation:
Assignee:
Usui Kokusai Sangyo Co., Ltd.
International Classes:
F16L13/14; B21D39/04; B21D51/16; F16L19/04
Domestic Patent References:
| JP2014059051A | ||||
| JP2000161567A | ||||
| JP9502009A | ||||
| JP57037179A |
Foreign References:
| DE102015105798A1 |
Attorney, Agent or Firm:
Cleo International Law & Patent Office