Novel fastener

A fastener, a new type of technology, applied in the field of mechanical parts, can solve problems such as poor meshing, difficult implementation, and embedding difficulties, and achieve the effect of preventing detachment

Inactive Publication Date: 2018-10-12
合肥仨力机械制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, "spring washers with protrusions and threaded parts with anti-loosening mechanism" adopt a number of engaging protrusions and embedded protrusions to stop retreating on the inner and outer sides of the special spring washer. Complex, difficult to implement, and because of poor meshing, difficult to embed, easy to plastic deformation, thus affecting the anti-retraction effect; "Stop-retreat, defense series threaded fasteners", using special spring gaskets to make positioning points and anti-retreat point, the end face of the bolt and nut is made into a stop point, and the workpiece screw is made into a positioning groove, which is prevented from retreating and defending through the meshing between teeth. Difficult, the spring washer is easy to be plastically deformed, which affects the anti-retraction effect; the "improved washer" adopts the radial annular triangular prism inverted teeth on the upper surface of the special washer, and more than three sharp points are set on the

Method used

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Example Embodiment

[0018] Reference figure 1 , The present invention proposes a new type of fastener, nut 1, bolt 2, first cylinder 3 and second cylinder 4.

[0019] The nut 1 is provided with internal threads and matched with the external threads on the bolt 2. The nut 1 is threadedly connected to the bolt 2 from the first end of the bolt 2, and the bolt 2 is provided with a first cavity 20 penetrating the first end surface of the bolt 2 , The first cylinder 3 is installed in the first cavity 20. The second cylinder 4 is installed inside the nut 1, and a step hole 40 is provided inside the second cylinder 4.

[0020] When the nut 1 and the bolt 2 are connected, the second cylinder 4 is inserted into the first cavity 20 and the first cylinder 3 is inserted into the step hole 40.

[0021] A spring 5 is installed on the first column 3, the middle of the spring 5 is fixed on the first column 3, and both ends of the spring 5 are movable ends, and both ends of the spring 5 are connected with a sliding bloc...

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Abstract

The invention provides a novel fastener. The novel fastener comprises a nut, a bolt, a first column body and a second column body; an inner thread is arranged on the nut and is matched with the outerthread on the bolt, the nut is in threaded connection with the bolt from the first end of the bolt, a first cavity penetrating the end face of the first end is formed in the bolt, the first column body is arranged in the first cavity, the second column body is arranged in the nut, and a step hole is formed in the second column body. According to the novel fastener, along with gradual screwing of the nut and the bolt, two sliding blocks enter the wide part from the narrow part of the step hole, after the sliding blocks enter the wide part, along with spring extension, the two sliding blocks areclamped in the step hole, the first column body and the second column body are mutually static in the axis direction, the nut and the bolt are static in the axis direction, the nut cannot rotate relative to the bolt thread, and the nut is prevented from being separated from the bolt.

Description

technical field [0001] The invention relates to the technical field of mechanical parts, in particular to a novel fastener. Background technique [0002] The back-stopping method of known bolt is to adopt methods such as elastic washer plane back-off, cotter pin back-off, double nuts and tight back-off, fuse back-off, wheel cone elastic washer back-off. Among them, "spring washers with protrusions and threaded parts with anti-loosening mechanism" adopt a number of engaging protrusions and embedded protrusions to stop retreating on the inner and outer sides of the special spring washer. Complex, difficult to implement, and because of poor meshing, difficult to embed, easy to plastic deformation, thus affecting the anti-retraction effect; "Stop-retreat, defense series threaded fasteners", using special spring gaskets to make positioning points and anti-retreat point, the end face of the bolt and nut is made into a stop point, and the workpiece screw is made into a positioning...

Claims

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Application Information

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IPC IPC(8): F16B39/28F16B37/00F16B35/04
CPCF16B39/28F16B35/044F16B37/00
Inventor 孙伟柯章平
Owner 合肥仨力机械制造有限公司
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