Title:
DOUBLE NUT INCLUDING LOOSENING PREVENTION MEMBER
Document Type and Number:
WIPO Patent Application WO/2019/045156
Kind Code:
A1
Abstract:
Disclosed is a double nut including a loosening prevention member. The double nut including the loosening prevention member according to the present invention includes: a double nut part including a lower nut that is fastened to the lower portion of the protruding area of a bolt inserted, so as to protrude, into fastening holes formed in fastening target objects which are to be fastened to each other, and an upper nut that is fastened to the upper portion of the protruding area; and a loosening prevention member disposed between the lower nut and the upper nut to apply elasticity in a direction in which the lower nut and the upper nut move away from each other. Here, by forming guide grooves, which are formed gradually recessing in a circumferential direction in the top surface of the lower nut and the bottom surface of the upper nut, respectively, so as to be symmetrical to each other, and catching grooves, which form boundary surfaces on both ends of the guide grooves, to support both ends of the loosening prevention member, the upper nut is configured to be rotatable only in the direction in which the upper nut moves toward the lower nut.
Inventors:
KIM YOUNG KWON (KR)
Application Number:
PCT/KR2017/009752
Publication Date:
March 07, 2019
Filing Date:
September 06, 2017
Export Citation:
Assignee:
CORE BOLT CO LTD (KR)
International Classes:
F16B39/02
Foreign References:
| JP2004169902A | 2004-06-17 | |||
| KR101532622B1 | 2015-06-30 | |||
| JP2001059514A | 2001-03-06 | |||
| JP2000274417A | 2000-10-03 | |||
| KR20110089396A | 2011-08-08 |
Attorney, Agent or Firm:
DONGCHEON PATENT FIRM (KR)
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