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Anti-loosing fixing device

A fastening device and anti-loosening technology, applied in the direction of threaded fasteners, locking fasteners, connecting components, etc., can solve problems such as falling off and loosening of external threaded fasteners, and achieve easy installation, connection performance and anti-loosening Loose and reliable results

Inactive Publication Date: 2009-01-14
ZHEJIANG KACON ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Parts made of this clearance fit fastening method, in long-term use, are prone to loosening of external thread fasteners due to vibration, and eventually fall off and cause accidents

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Figure 1 to Figure 4 The first specific embodiment of the present invention is shown, wherein Fig. 1 is a schematic structural view of the first structure of the present invention; Fig. 2 is an exploded schematic view of the anti-loosening fastening device shown in Fig. 1; image 3 It is a schematic diagram of a three-dimensional structure of an externally threaded fastener in the anti-loosening fastening device shown in Figure 1; Figure 4 It is a three-dimensional structural schematic diagram of the device body in the anti-loosening fastening device shown in FIG. 1 .

[0028] This embodiment is a kind of anti-loosening fastening device, see Fig. 1 to Figure 4 , including a device body 2 provided with a coupling part 1, a cover body 4 matched with the device body, and an externally threaded fastener 3 for fastening connection with the coupling part 1; the coupling part 1 is made of non-metallic material, the coupling part 1 is provided with a fastening hole 11, and ...

Embodiment 2

[0031] Figure 5 It is a schematic cross-sectional structure diagram of the second structure of the present invention, showing the second embodiment of the present invention.

[0032] This embodiment is basically the same as Embodiment 1, except that the externally threaded fastener 3 is a bolt, the fastening hole 11 is a circular through hole, and the threaded ends of the bolts pass through the The above-mentioned fastening hole 11 extends out of the device body, and then is threaded with an external nut 5 .

[0033] In the above-mentioned embodiment 1 and embodiment 2, the diameter of the fastening hole is smaller than the nominal diameter of the externally threaded fastener, and the externally threaded fastener is connected to the fastening hole with an interference fit. After the parts are tightened, the side walls of the fastening holes will firmly clamp the fasteners, and bite and lock the fasteners, so that the device made in this way has better anti-loosening performa...

Embodiment 3

[0035] Figure 6 It is a three-dimensional structural schematic diagram of the coupling part in the third structure of the present invention, showing the third embodiment of the present invention.

[0036] This embodiment is basically the same as Embodiment 1, except that: the basic shape of the coupling part 1 is a column protruding from the device body 2 with a circular hole. The diameter of the fastening hole 11 is smaller than the nominal diameter of the externally threaded fastener 3 and equal to the minor diameter of the external thread of the externally threaded fastener 3 .

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PUM

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Abstract

The invention discloses an anti-loosening fastening device, including a device main body provided with a connection part, and an outside thread fastening piece used for being connected with the connection part tightly; wherein, the connection part is made of non-metallic material and provided with a fastening hole; the outside thread fastening piece is made of metallic material and arranged in the fastening hole; the aperture of the fastening hole is smaller than the nominal diameter of the outside thread fastening piece, and the outside thread fastening piece is connected with the fastening hole in an interference fit way. The invention has comparatively firm connection and better anti-loosening effect.

Description

technical field [0001] The invention belongs to the technical field of mechanical connection, and in particular relates to an anti-loosening fastening device. Background technique [0002] A traditional device that needs to be fastened and connected with an externally threaded fastener includes a device body provided with a coupling portion, and an externally threaded fastener for fastening connection with the coupling portion; the coupling portion is made of non-metallic material made, and the coupling part is provided with a fastening hole; the externally threaded fastener is made of metal material, and the externally threaded fastener is set in the fastening hole; in order to install lightly and labor-savingly, the The diameters of the fastening holes are all larger than the nominal diameter (also called the major diameter of the external thread) of the externally threaded fastener, that is, the externally threaded fastener is connected with the fastening hole by clearanc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16B39/284
Inventor 李容威李文载
Owner ZHEJIANG KACON ELECTRIC