Title:
鋼管の接続構造
Document Type and Number:
Japanese Patent JP7432926
Kind Code:
B2
Abstract:
To provide a steel pipe connection structure in which the work of connecting steel pipes is easy and the connection strength of steel pipes is large.SOLUTION: A steel pipe connection structure in which one steel pipe is inserted into the other steel pipe to connect a plurality of steel pipes adjacent to each other in the axial direction comprises an elastic ring 14 provided on the outer circumference of the connection end of one of the steel pipes and at least partially protruding from the outer circumference of the connection end, a male threaded portion 13 formed on the outer circumference of the connection end, an annular recess 22 formed on the inner circumference of the connecting end of the other steel pipe and facing the elastic ring 14, and a female threaded portion 23 formed on the inner circumference of the connection end and facing the male threaded portion 13. The elastic ring 14 engages with the annular recess 22 at the end point of the screwing of the male threaded portion 13 in the one steel pipe and the female threaded portion 23 in the other steel pipe.SELECTED DRAWING: Figure 2
Inventors:
Motoichi Yoshida
Hideaki Kimura
Yoshikazu Fukushima
Hitomi Kan
Hideaki Kimura
Yoshikazu Fukushima
Hitomi Kan
Application Number:
JP2020216740A
Publication Date:
February 19, 2024
Filing Date:
December 25, 2020
Export Citation:
Assignee:
Tokin All Co., Ltd.
International Classes:
E21D9/04; E21D20/00; F16B7/18
Domestic Patent References:
| JP2002220828A | ||||
| JP6117200A | ||||
| JP9042239A | ||||
| JP2004332242A |
Attorney, Agent or Firm:
Patent Attorney Corporation Sannozaka Patent Office