Title:
STRUCTURE FOR PREVENTING REVERSE ROTATION OF THREADED BODY
Document Type and Number:
WIPO Patent Application WO/2015/016317
Kind Code:
A1
Abstract:
The objective is to prevent the loosening of a structure with which a member (80) to be fastened and a base material (90) are fastened by means of a male screw body (10) and a washer (50). A screw-body-side seat part (22) is formed on the male screw body (10), and a first receiving part (60) and second receiving part (70) are formed on the washer side. A member-side seat part (82) is formed on the member (80) to be fastened. The first receiving part (60) and the screw-body-side seat part (22) have sawtooth-shaped recesses and protrusions. When an attempt is made to rotate the male screw body (10) in the direction of loosening, the recesses and protrusions engage one another, thereby preventing rotation. A recessed housing part of the member-side seat part (82) and the outer wall of the second receiving part (70) of the washer (50) have an eccentric circular shape. When an attempt is made to rotate the washer (50) in the direction of loosening, the eccentric circular shapes engage one another, thereby preventing rotation.
Inventors:
MICHIWAKI HIROSHI (JP)
Application Number:
PCT/JP2014/070232
Publication Date:
February 05, 2015
Filing Date:
July 31, 2014
Export Citation:
Assignee:
NEXT INNOVATION INC (JP)
NEJILAW INC (JP)
NEJILAW INC (JP)
International Classes:
F16B39/24
Foreign References:
| JPS417112Y | ||||
| JPS0713278Y1 | ||||
| JPS382673B | ||||
| JP2005090530A | 2005-04-07 |
Other References:
See also references of EP 3029341A4
None
None
Attorney, Agent or Firm:
SAHARA Masashi et al. (JP)
Sawara Masafumi (JP)
Sawara Masafumi (JP)
Download PDF:
Previous Patent: CARBON MATERIAL DISPERSED FILM FORMATION COMPOSITION
Next Patent: ELEMENT MANUFACTURING METHOD AND ELEMENT MANUFACTURING APPARATUS
Next Patent: ELEMENT MANUFACTURING METHOD AND ELEMENT MANUFACTURING APPARATUS