Title:
NUT LOOSENING PREVENTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/213774
Kind Code:
A1
Abstract:
Disclosed is a nut loosening prevention device for preventing loosening of a nut coupled to a screw thread formed on the outer circumferential surface of a bolt body. The nut loosening prevention device, according to the present invention, comprises: a spring rotating along the screw thread of the bolt body; a cap member for covering the nut and the spring; and a plate spring which has an insertion hole, and of which a plate surface is curved. Here, the spring comprises: a free end which is formed on one end portion thereof and is configured to have a diameter greater than the diameter of the screw thread of the bolt body, and which comes into contact with one surface of the nut when being installed; and a fixed end which is formed on the other end portion thereof and is curved outwardly. The cap member comprises: an aperture which is formed, by cutting one side of the outer surface thereof, on a side other than a portion into which the nut and the spring are inserted; and a mounting groove which is recessed from the aperture by a predetermined depth.
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Inventors:
KIM YOUNG KWON (KR)
Application Number:
PCT/KR2019/004766
Publication Date:
October 22, 2020
Filing Date:
April 19, 2019
Export Citation:
Assignee:
CORE BOLT CO LTD (KR)
International Classes:
F16B39/38; F16B37/14; F16B39/32
Foreign References:
| JP2004100952A | 2004-04-02 | |||
| JPH06179301A | 1994-06-28 | |||
| KR200390235Y1 | 2005-07-25 | |||
| KR20170085748A | 2017-07-25 | |||
| US5810532A | 1998-09-22 |
Attorney, Agent or Firm:
PARK, Jungkyu (KR)
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