Title:
SCREW CONFIGURED TO HAVE IMPROVED ANTI-SHOCK, ANTI-VIBRATION, AND FASTENING ABILITY, AND SCREW-TYPE MECHANICAL COMPONENT
Document Type and Number:
WIPO Patent Application WO/2011/132859
Kind Code:
A2
Abstract:
The present invention relates to a screw configured to have improved anti-shock, anti-vibration, and fastening ability, and particularly, to screw technology that: forms an angle of a leading flank surface constituting the inclined plane of a screw thread in an entry direction to be less than an angle of a trailing flank surface constituting the inclined plane of the screw thread in an exit direction, with respect to the center of the screw thread; and has the trailing flank surface provided as a single stage flat portion formed horizontally within a sloped section, to enlarge the contacting surface area between the screw and a female screw correspondingly coupled to the screw. Thus, upward, downward, left and right vibration of a screw caused by external impacts can be prevented so as to avert autonomous disengagement of the screw, and effectively prevent a reduction of disengaging torque arising from repeated use.
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Inventors:
WOO SANG-HA (KR)
Application Number:
PCT/KR2011/001859
Publication Date:
October 27, 2011
Filing Date:
March 17, 2011
Export Citation:
Assignee:
ASIA BOLT CO LTD (KR)
WOO SANG-HA (KR)
WOO SANG-HA (KR)
International Classes:
F16B33/02; F16B33/00
Foreign References:
| US20090047093A1 | 2009-02-19 | |||
| JPH08177839A | 1996-07-12 | |||
| JP4361128B1 | 2009-11-11 |
Attorney, Agent or Firm:
DAE-A INTERNATIONAL IP & LAW FIRM (KR)
특허법인 대아 (KR)
특허법인 대아 (KR)
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Claims: