Title:
ADJUSTMENT BOLT LOCKING STRUCTURE
Document Type and Number:
WIPO Patent Application WO/2019/031052
Kind Code:
A1
Abstract:
The present invention enables easily applying a prevailing torque to an adjustment bolt without complicated adjustment work. The present invention is provided with: a cylindrical pipe (6) that is fitted to the outside of a screw shaft (2a) of an adjustment bolt (2); and a nut (7) that has a screw hole into which the screw shaft (2a) is screwed. The present invention is configured such that: the bottom surface of the nut (7) is provided with a recess (7a) into which the upper end section of the cylindrical pipe (6) is fitted; the inner circumferential surface of the recess (7a) is a tapered surface with the diameter thereof decreased toward the deep end side, and the center axis of the tapered surface is slightly eccentric with respect to the center axis of the screw hole; by fastening the nut (7) screwed onto the screw shaft (2a) with respect to the cylindrical pipe (6), a part of the eccentric tapered surface in the circumferential direction is brought into pressure contact with the upper end section of the cylindrical pipe (6), and the center axis (Q) of the screw hole of the nut (7) is made eccentric and/or inclined with respect to the center axis (O) of the screw shaft (2a); and, as a result, a prevailing torque corresponding to a fastening amount of the nut (7) is generated in the adjustment bolt (2).
Inventors:
WAKABAYASHI KATSUHIKO (JP)
Application Number:
PCT/JP2018/022180
Publication Date:
February 14, 2019
Filing Date:
June 11, 2018
Export Citation:
Assignee:
HARDLOCK IND CO LTD (JP)
International Classes:
F16B39/12; F16B37/00; F16B39/284; G10D13/02; G10D13/10
Foreign References:
| JPH07302076A | 1995-11-14 | |||
| JPH116516A | 1999-01-12 | |||
| JPH07302076A | 1995-11-14 | |||
| JP2009047780A | 2009-03-05 |
Other References:
See also references of EP 3667108A4
Attorney, Agent or Firm:
UEBA Hidetoshi et al. (JP)
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