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Patent Searching and Data


Title:
SELF-LOCKING BOLT NUT ASSEMBLY
Document Type and Number:
WIPO Patent Application WO/2010/068001
Kind Code:
A2
Abstract:
The present invention relates to a self-locking bolt nut assembly comprising: a bolt (100), a nut (200) fastening with the bolt (100); and a washer (300) connected between the bolt (100) and the nut (200). The bolt (100) including a bolt head (110) and a bolt body (120) is formed with an insertion guide groove (130) along a longitudinal direction of the bolt body (120), wherein the insertion guide groove (130) splits the bolt body (120) along the longitudinal direction. The nut (200) includes a plurality of projections (210) protruding at a preset interval on a plane contacting the washer (300) and arranged in a circle. The washer (300) includes rotation-preventive protrusions (310) protruding from a part of the inside diameter toward the center of the washer (300). So, the rotation preventive protrusions (310) are accepted in the insertion guide groove (130). In addition, the washer (300) includes a plurality of elastic projecting portions (320) protruding with a preset interval along a surface contacting the nut (200) and arranged in a circle. As a result, if the nut (200) is screwed in a state that the nut (200) contacts the washer (300), the elastic projecting portion (320) is gradually bent while sliding on one side of the projection (210). Then, the bent elastic projecting portions (320) return to the original shape elastically. Therefore, the elastic projecting portions (320) lock on the other side of the projection (210).

Inventors:
LEE SANG-CHEOL (KR)
Application Number:
PCT/KR2009/007281
Publication Date:
June 17, 2010
Filing Date:
December 07, 2009
Export Citation:
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Assignee:
LEE SANG-CHEOL (KR)
International Classes:
F16B43/00; F16B39/10; F16B39/24
Foreign References:
KR100241791B12000-02-01
Other References:
See also references of EP 2362108A4
Attorney, Agent or Firm:
KOH, Young-Hoe (KR)
고영회 (KR)
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