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Locknut

An anti-loosening nut and anti-loosening technology, which is applied in the direction of nuts, screws, bolts, etc., can solve the problems of weakening the anti-loosening effect of the double-nut structure, failure of the anti-loosening of the double-nut structure, and difficulty in installation, and achieves the effect of small torque and anti-loosening effect Good, easy to install

Inactive Publication Date: 2017-05-31
HUATIAN ENG & TECH CORP MCC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The double-nut structure is the most widely used thread anti-loosening mechanism. Although its structure is simple, the anti-loosening effect depends on the tightening torque when the two nuts are installed, which requires high installation, otherwise the anti-loosening of the double-nut structure will be weakened The loose effect even leads to the anti-loosening failure of the double nut structure
[0004] In addition, if the size of the connecting thread is large, a large torque is required to install the double nut, and the installation is very difficult

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Such as Figure 1-3 As shown, the present embodiment provides a kind of anti-loosening nut; figure 1 As shown, the locknut in this embodiment at least includes a screw 1 , a dustproof ring 2 and a nut 3 . Among them, the screw 1 cooperates with the anti-loosening hole on the front end surface of the nut 3 to lock the nut; the dustproof ring 2 is installed on the groove on the outer ring of the nut 3 to prevent dust and other sundries from falling into the groove , thus affecting the normal use of the nut.

[0025] On the outer ring of the nut 3, there is a groove near the front side, the groove diameter B; on the inner ring of the nut 3, there is a groove near the rear side, the groove diameter C, the groove divides the inner thread of the nut into two sections, front and back , the distance between the inner and outer grooves is L.

[0026] The diameter of the groove on the outer ring of the nut 3 is BA+D; and the distance L between the two grooves cannot be too lar...

Embodiment 2

[0034] This embodiment provides a lock nut. This embodiment provides a lock nut. As shown in the figure, the lock nut of this embodiment at least includes a screw, a dust seal and a nut. Among them, the screw cooperates with the anti-loosening hole on the front side of the nut to lock the nut; the dustproof ring is installed on the groove on the outer ring of the nut to prevent dust and other sundries from falling into the groove, thereby affecting the nut. normal use.

[0035] On the outer ring of the nut, there is a groove near the front side, the groove diameter B; on the inner ring of the nut, there is a groove near the back side, the groove diameter C, the groove divides the nut internal thread into two sections, the inner and outer The distance between the two grooves is L.

[0036] The diameter of the groove on the outer ring of the nut is BA+D.

[0037] The middle of the nut is a threaded through hole, and several anti-loosening holes are evenly distributed on the ci...

Embodiment 3

[0043] This embodiment provides a locknut; the locknut in this embodiment at least includes a screw, a dustproof ring and a nut. Among them, the screw cooperates with the anti-loosening hole on the front side of the nut to lock the nut; the dustproof ring is installed on the groove on the outer ring of the nut to prevent dust and other sundries from falling into the groove, thereby affecting the nut. normal use.

[0044] On the outer ring of the nut, there is a groove near the front side, the groove diameter B; on the inner ring of the nut, there is a groove near the back side, the groove diameter C, the groove divides the nut internal thread into two sections, the inner and outer The distance between the two grooves is L.

[0045] The diameter of the groove on the outer ring of the nut is BB, and C is not greater than A+D.

[0046] The middle of the nut is a threaded through hole, and several anti-loosening holes are evenly distributed on the circumferential direction of th...

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Abstract

The invention discloses a locknut. The locknut simple in structure and reliable in mounting is provided aiming at the problems that in the prior art, large torque is needed for loosening preventing of double nuts, and operation is inconvenient. The locknut comprises a nut body. An inner annular groove is formed in the thread face of the nut body. An outer annular groove is formed in the outer side wall of the nut body. The diameter of the bottom face of the inner annular groove is larger than the diameter of the bottom face of the outer annular groove. The inner annular groove and the outer annular groove are formed in a spaced mode in the axial direction. Medium spacing between the outer annular groove and the inner annular groove is a deformed section. The two sides of the inner annular groove are a front thread section and a rear thread section correspondingly. An anti-loosening hole is formed in the front end face of the nut body and penetrates through the inner annular groove and the outer annular groove. By deforming of the deformed section between the outer annular groove and the inner annular groove, threads of the front thread section and the rear thread section of the nut body cling to the front and rear sides of a screw thread; and a matching section and an anti-loosening section are made integrally, relative rotating does not occur, and therefore, the anti-loosening effect is reliable.

Description

technical field [0001] The invention relates to a locknut. Background technique [0002] Threaded connections are widely used in mechanical equipment, but the vibration and impact of equipment during operation will affect the fastness and reliability of threaded connections. Therefore, the problem of anti-loosening of threaded connections must be considered in important equipment and key parts. [0003] The double-nut structure is the most widely used thread anti-loosening mechanism. Although its structure is simple, the anti-loosening effect depends on the tightening torque when the two nuts are installed, which requires high installation, otherwise the anti-loosening of the double-nut structure will be weakened The loose effect even leads to the anti-loosening failure of the double nut structure. [0004] In addition, if the size of the connecting thread is large, a large torque is required to install the double nut, and the installation is very difficult. Contents of ...

Claims

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Application Information

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IPC IPC(8): F16B39/02F16B37/00
CPCF16B39/028F16B37/00
Inventor 徐志坤谷青林蒲春雷孙建国
Owner HUATIAN ENG & TECH CORP MCC
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