Variable form combination locknut

A technology for locking nuts and nuts, applied in the directions of nuts, screws, bolts, etc., can solve problems such as affecting the service life of bolts, and achieve the effects of improving service life, avoiding shearing, and increasing friction.

Pending Publication Date: 2018-11-09
王平安
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the above patent can effectively prevent the thread from loosening, since the male nut and the female nut hold the bolt tightly from two opposite directions at the same time, it will cause radial shear to the bolt and affect the service life of the bolt

Method used

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  • Variable form combination locknut
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  • Variable form combination locknut

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Example 1, such as Figure 1-7 As shown: the upper end surface of the female nut 1 is provided with an inverted conical counterbore 2 coaxial with its thread, and the lower end surface of the male nut 3 has an inverted conical platform 4 connected with it and coaxial with its thread . The surface of the inverted conical counterbore 2 is an inner conical structure, and the inverted conical frustum 4 is an inverted elliptical frustum structure. Wherein, the minor axis of the platform bottom surface 4-1 of the inverted conical platform body 4 is equal to the diameter of the hole bottom 2-1 of the inverted conical counterbore 2, and the minor axis of the platform top surface 4-2 is equal to the diameter of the inverted conical counterbore 2. Hole top mouth 2-2 diameter.

[0022] working principle

[0023] When the two nuts are tightened, since the wall thickness at the bottom of the hole 2-1 is far greater than the wall thickness at the bottom of the platform 4-1, the pl...

Embodiment 2

[0024] Example 2, such as Figure 1-7 As shown, on the basis that the basic structure is the same as that of Embodiment 1, the structure of the present invention can also be changed as follows: the hole bottom opening 2-1 and the hole top opening 2-2 of the inverted tapered counterbore 2 are oval structure, the inverted conical platform body 4 is an inverted conical frustum structure; wherein, the major axis of the hole bottom opening 2-1 is equal to the diameter of the platform bottom surface 4-1 of the inverted conical platform body 4, and the major axis of the hole top opening 2-2 is equal to The diameter of the platform top surface 4-2 of the inverted conical platform body 4.

[0025] working principle

[0026] When the two nuts are tightened, because the wall thickness at the bottom of the hole 2-1 is far greater than the wall thickness at the bottom of the table 4-1, the bottom of the table 4-1 with a circular structure will be at the bottom of the hole 2-1 with an oval...

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PUM

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Abstract

The invention discloses a variable form combination locknut, and belongs to the field of fasteners. The variable form combination locknut comprises a female nut (1) and a male nut (3), wherein an inverted-cone-shaped countersunk hole (2) is formed in one end surface of the female nut(1), and an inverted-cone-shaped frustum body (4) is arranged on one end surface of the male nut (3). The surface ofthe inverted-cone-shaped countersunk hole (2) is of an internal conical or internal elliptical conical structure, and a thread of the female nut (1) is coaxial with the axis of the inverted-cone-shaped countersunk hole. The inverted-cone-shaped frustum body (4) is of an inverted elliptical frustum or an inverted cone frustum structure, and a thread of the male nut (3) is coaxial with the axis ofthe inverted-cone-shaped frustum body. According to the variable form combination locknut, the locking force of the male nut on a bolt is improved, a thread is prevented from loosening, the shearing effect on the bolt can be avoided, and the service life of the bolt is prolonged; and the defects such as uneven force and large thread clearance of a nut assembly can be overcome. The variable form combination locknut relates to a non-standard locknut assembly.

Description

technical field [0001] The invention relates to an anti-loosening nut, in particular to a modified combination anti-loosening nut, belonging to fasteners. Background technique [0002] Nuts are the most commonly used connecting fasteners in the mechanical field, and are generally standard fasteners. Ordinary nuts are prone to loose threaded connections due to frequent mechanical vibrations, or even fall off, resulting in accidents. For this reason, measures such as adding elastic split washers, toothed anti-skid washers, and double nuts are usually taken to prevent the nuts from loosening, but the effect is irrational. [0003] In order to overcome the defects of poor interlocking effect and easy loosening of common standard nuts, patent documents such as "CN862040744", "CN982374054", "CN2014200982388", "CN2015206220490", "CN2016201826563" and other patent documents disclose a locknut assembly with an eccentric structure: It includes a male nut with a truncated cone on the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16B39/12F16B37/00
CPCF16B37/00F16B39/122
Inventor 王平安
Owner 王平安
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