Title:
締結部材
Document Type and Number:
Japanese Patent JP6892046
Kind Code:
B2
Abstract:
The invention provides a fastening member capable of preventing rotary loosening and non-rotary loosening. An external thread tooth (22) of the fastening member (1) are arranged at a top (221) side, the inclination angle of a ridge line relative to an orthogonal direction orthogonal to an extending direction of a shaft part (20) is substantially the same as the inclination angle of a valley side ridge line of an internal thread tooth (201) of a second member (200) relative to the orthogonal direction, at an external thread valley (23) side, the inclination angle of a ridge line relative to theorthogonal direction is an acute angle smaller than the inclination angle of a top side ridge line of the internal thread tooth (201) of the second member (200), the second member (200) is fastened to the shaft part (20), elastic deformation of the external thread tooth (22) occurs and elastic strain energy is stored, and the elastic strain energy becomes an axial force acting on a direction enabling a first member (100) and the second member (200) to approach each other.
Inventors:
Kurosawa Akio
Takashi Kuwahata
Kenji Nakanishi
Takashi Kuwahata
Kenji Nakanishi
Application Number:
JP2016220081A
Publication Date:
June 18, 2021
Filing Date:
November 10, 2016
Export Citation:
Assignee:
Union Precision Co., Ltd.
International Classes:
F16B39/30; F16B5/02; F16B33/02
Domestic Patent References:
| JP6173925A | ||||
| JP11117929A | ||||
| JP2012013133A | ||||
| JP2002349536A |
Attorney, Agent or Firm:
Takeshi Sato