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Title:
DOUBLE-NUT THREADED JOINT PREVENTING SELF-ROTATION IN LOOSENING DIRECTION
Document Type and Number:
WIPO Patent Application WO/2019/205957
Kind Code:
A1
Abstract:
A double-nut threaded joint preventing self-rotation in a loosening direction comprises a bolt (1), a first nut (2) and a second nut (3). A concave surface (4) or a convex surface (5) is disposed on the top of the first nut. A convex surface or a concave surface is disposed at the bottom of the second nut. When the bolt, the first nut and the second nut are mounted and tightened on a workpiece (6), the bottom of the first nut contacts the workpiece, the concave surface contacts the convex surface with no lateral space therebetween, a lower side of the internal thread of the first nut contacts an upper side of the external thread of the bolt, an upper side of the internal thread of the second nut contacts a lower side of the external thread of the bolt, and the structure formed between the concave surface and the convex surface is not self-locking in a longitudinal direction.

Inventors:
XU, Songlin (15-603, Mingduhuayuan Xinshihe Road, Yangshe Tow, Zhangjiagang Jiangsu 0, 215600, CN)
Application Number:
CN2019/082380
Publication Date:
October 31, 2019
Filing Date:
April 12, 2019
Export Citation:
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Assignee:
XU, Songlin (15-603, Mingduhuayuan Xinshihe Road, Yangshe Tow, Zhangjiagang Jiangsu 0, 215600, CN)
International Classes:
F16B39/12; F16B37/00; F16B39/28
Foreign References:
CN108488200A2018-09-04
CN208252561U2018-12-18
JP2008038947A2008-02-21
JP2007107716A2007-04-26
CN86204074U1987-07-22
CN2572108Y2003-09-10
JP2016027270A2016-02-18
JP2016133136A2016-07-25
JP2005048807A2005-02-24
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