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Anti-loose screw

A technology of anti-loosening and screw application in the direction of screws, nuts, bolts, etc., which can solve the problems of complex and difficult forming molds, high cost, and difficult manufacturing, and achieve the effect of low mold cost, simple and cheap manufacturing

Inactive Publication Date: 2018-07-27
FUGUANG ENTERPRISE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In today's screw manufacturing technology, the external thread 13 is usually formed by rolling the screw body 12 with a set of rubbing boards, or cutting the screw body 12 with a thread milling cutter on a milling machine. Forming, however, since the helix of the curved thread 132 will be a wavy curve with an irregular slope, so in manufacturing, for the curved thread 132 with a wave shape, more complicated and difficult methods must be used. Forming molds, which are not only difficult to manufacture but also expensive

Method used

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Examples

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Embodiment Construction

[0021] refer to image 3 and Figure 4 , an embodiment of the anti-loosening screw of the present invention includes a screw head 2, a screw body 3, and an anti-loosening thread 4, and defines a central axis 5 passing through the center of the screw head 2 and the screw body 3.

[0022] The screw head 2 includes a screw head groove 21 formed on one end surface, and the screw head groove 21 can be used for locking a tool such as a flat-shaped screwdriver or a cross-shaped screwdriver. In other variations of this embodiment, the screw head 2 can also be locked using other auxiliary tools such as a wrench or a finger, and it is not necessary to provide the screw head groove 21 .

[0023] The screw body 3 is a cylinder extending longitudinally along the central axis 5 from an end surface of the screw head 2 opposite to the screw head groove 21 , and includes an outer peripheral surface 31 around the central axis 5 .

[0024] The anti-loosening thread 4 is helically disposed on t...

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Abstract

An anti-loose screw comprises a screw body extending along a center axis and an anti-loose thread arranged on the screw body. The anti-loose thread comprises a plurality of standardized screw threadsand at least one deviating screw thread, each standardized screw thread surrounds the center axis by one circle and is provided with a standardized outline face, and the at least one deviating screw thread surrounds the center axis by one circle and is provided with a deviating outline face. The deviating outline faces are each provided with a deviating convex part axially deviating and staggeredrelative to the standardized outline faces, and the axial distance between any point on the deviating convex parts and the corresponding same-position point of the adjacent standardized outline face is equal to a deviating screw pitch. The slope factors of the deviating convex parts of the at least one deviating screw thread have consistency, and the manufacturing process of the anti-loose screw is more convenient.

Description

technical field [0001] The invention relates to a screw, in particular to an anti-loosening screw which can prevent loosening after being locked. Background technique [0002] The use of screws for locking is an existing technology in many industries, but the existing screws often have the problem of poor engagement between the external thread and the internal thread of the screw hole, which often leads to the vibration of the screw and the screw hole or loosen after prolonged use. In order to improve this problem, many prior proposals are dedicated to improving the structure of the screw. [0003] refer to figure 1 and figure 2 , is a screw 1 disclosed in U.S. Patent No. US7326014. The screw 1 includes a screw head 11, a rod-shaped screw body 12 extending downward from one end of the screw head 11, and a spirally arranged on The external thread 13 on the outer surface of the screw body 12 . The external thread 13 includes several standard threads 131 and a curved thre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16B39/30
CPCF16B39/30
Inventor 张志峰
Owner FUGUANG ENTERPRISE
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