CN113464538A

CN113464538A - Detachable locknut

Info

Publication number: CN113464538A
Application number: CN202011170727.6A
Authority: CN
Inventors: 吴天宏
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-10-28
Filing date: 2020-10-28
Publication date: 2021-10-01

Abstract

The invention discloses a detachable anti-loosening nut, which comprises a nut, a washer and a gasket, wherein an avoiding groove is formed in the washer, the gasket is positioned below the washer, an elastic sheet is arranged on the gasket and positioned in the avoiding groove of the washer, the upper end part of the elastic sheet extends to the upper part of the washer, the nut is positioned above the washer, and a ratchet corresponding to the upper end part of the elastic sheet is arranged on the bottom surface of the nut, so that the invention has the advantages that: when guaranteeing good locking effect for the nut still possesses can dismantle the function, and this detachable lock nut of being convenient for carries out used repeatedly.

Description

Detachable locknut

Technical Field

The invention relates to the technical field of nuts, in particular to the technical field of anti-loosening nuts.

Background

The anti-loose method adopted by the anti-loose nut in the prior art mainly comprises mechanical anti-loose, rivet-punch anti-loose, friction anti-loose, structural anti-loose and the like, wherein the friction anti-loose is the most widely applied anti-loose method, and the method generates a positive pressure which does not change along with external force between locking nut pairs so as to generate a friction force which can prevent the locking nut pairs from rotating relatively, the positive pressure can be completed by axially or simultaneously compressing the locking nut pairs in two directions, such as an anti-slip washer is adopted, the anti-slip effect of the common anti-slip washer is improved by arranging anti-slip teeth on the surface of the common anti-slip washer, therefore, the anti-loose effect is not ideal and can not adapt to the use occasions with higher requirements on anti-loose performance, although part of the anti-loose nuts with anti-disassembly structures can play a good anti-loose effect, the anti-loose nuts can not be disassembled after being installed, or the disassembly is very difficult, which is not convenient for the repeated use of the locknut.

Disclosure of Invention

The invention aims to solve the defects and provide a detachable anti-loosening nut which has a good anti-loosening effect, is very suitable for use occasions with high requirements on anti-loosening performance and can be detached.

The technical solution adopted by the present invention to solve the above technical problems is as follows:

detachable lock nut, it is including nut, packing ring and gasket seted up on the packing ring and dodge the groove, the gasket is located the packing ring below, is provided with the shell fragment on the gasket, and this shell fragment is located dodging of packing ring inslot, and the upper end of shell fragment extends to the packing ring top, the nut is located the packing ring top, is provided with the ratchet that corresponds with the upper end of shell fragment on the bottom surface of nut.

Offer the notch along circumference equipartition on the gasket, the shell fragment is located the notch department of gasket respectively, and this shell fragment upwards rolls up the stick up, and a lateral wall setting that the groove was kept away to the packing ring is the inclined plane, and the shell fragment pastes and leans on the inclined plane of keeping away the groove.

The inclined plane of the gasket avoiding groove is provided with a groove corresponding to the elastic sheet.

And locking teeth are arranged on the bottom surface of the washer and respectively penetrate through the notches of the gasket.

The avoiding grooves on the gasket are uniformly distributed along the circumferential direction.

The nut is a flange nut, and the ratchets on the nut are uniformly distributed along the circumferential direction.

The invention adopts the technical proposal to achieve the following beneficial effects: when the detachable anti-loosening nut is used, the washer and the gasket are sleeved on a bolt which needs to be connected with the nut, then the nut is screwed on the bolt, the washer and the gasket are tightly pressed through the nut, so that the locking teeth on the washer are tightly pressed and embedded on a workpiece which needs to be fastened, the washer and the gasket are tightly locked with the workpiece, after the nut is screwed, the upper end part of the elastic sheet is clamped between adjacent ratchets or is abutted against the ratchets, at the moment, under the limiting action of the upper end part of the elastic sheet and the ratchets, the nut can only rotate in the screwing direction, the nut is prevented from loosening, a good anti-loosening effect is achieved, and the detachable anti-loosening nut is very suitable for use occasions with high requirements on anti-loosening performance. When the nut is dismounted from the bolt as required, a claw-shaped tool is firstly taken, the claw of the claw-shaped tool is respectively clamped into the groove of the gasket, then the claw-shaped tool is moved, the elastic sheet is simultaneously pushed downwards through the claw of the claw-shaped tool, the upper end part of the elastic sheet is pushed into the avoiding groove, the upper end part of the elastic sheet is withdrawn from the ratchet of the nut, then the nut can be unscrewed from the bolt, thereby ensuring good anti-loosening effect, ensuring that the nut also has a detachable function, and facilitating the repeated use of the detachable anti-loosening nut.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the construction of the gasket and shim of FIG. 1;

FIG. 3 is a top view of FIG. 2;

FIG. 4 is a schematic view of the gasket of FIG. 1;

FIG. 5 is a bottom view of FIG. 4;

FIG. 6 is a schematic view of the gasket of FIG. 2;

FIG. 7 is a top view of FIG. 6;

figure 8 is a bottom view of the nut of figure 1.

Detailed Description

As shown in fig. 1 to 8, the detachable anti-loosening nut comprises a nut 1, a washer 2 and a gasket 3, wherein the washer 2 is provided with a plurality of avoidance grooves 4 uniformly distributed along the circumferential direction, a side wall of each avoidance groove 4 of the washer 2 is provided with an inclined surface 5, the gasket 3 is positioned below the washer 2, the gasket 3 is provided with notches 10 uniformly distributed along the circumferential direction, the notches 10 of the gasket 3 are respectively provided with a plurality of upward-warped elastic pieces 6, the elastic pieces 6 are respectively positioned in the avoidance grooves 4 of the washer 2, the elastic pieces 6 are attached to the inclined surfaces 5 of the avoidance grooves 4, the upper end portions of the elastic pieces 6 extend to the upper side of the washer 2, the nut 1 is positioned above the washer 2, the nut 1 is a flange nut, the bottom surface of the nut 1 is provided with ratchet teeth 7 corresponding to the upper end portions of the elastic pieces 6, the ratchet teeth 7 are uniformly distributed along the circumferential direction, the inclined surfaces 5 of the avoidance grooves 4 of the washer 2 are provided with grooves 8 corresponding to the elastic pieces 6, locking teeth 9 are provided on the bottom surface of the washer 2, the locking teeth 9 passing through notches 10 of the washer 3, respectively.

When the detachable anti-loosening nut is used, the washer 2 and the gasket 3 are firstly sleeved on a bolt which needs to be connected with the nut 1, then the nut 1 is screwed on the bolt, the washer 2 and the gasket 3 are tightly pressed through the nut 1, so that the locking teeth 9 on the washer 2 are tightly pressed and embedded on a workpiece which needs to be fastened, the washer 2 and the gasket 3 are tightly locked with the workpiece, after the nut 1 is screwed, the upper end part of the elastic sheet 6 is clamped between the adjacent ratchets 7 or is abutted against the ratchets 7, at the moment, under the limiting action of the upper end part of the elastic sheet 6 and the ratchets 7, the nut 1 can only rotate towards the anticlockwise direction in the figure 3 and cannot rotate towards the clockwise direction, namely, the nut 1 can only rotate towards the screwing direction, and therefore the nut 1 is prevented from loosening. When the nut 1 needs to be detached from the bolt, a claw-shaped tool is firstly taken, claws of the claw-shaped tool are respectively clamped into the grooves 8 of the washer 2, then the claw-shaped tool moves towards the downward direction in fig. 1, the elastic sheet 6 is simultaneously pushed downwards by the claws of the claw-shaped tool, the upper end part of the elastic sheet 6 is pushed into the avoiding groove 4, the upper end part of the elastic sheet 6 is withdrawn from the ratchet 7 of the nut 1, and then the nut 1 can be unscrewed from the bolt.

Claims

1. Detachable lock nut, its characterized in that: the gasket is located below the gasket, an elastic sheet is arranged on the gasket and located in the avoiding groove of the gasket, the upper end portion of the elastic sheet extends to the upper portion of the gasket, the nut is located above the gasket, and ratchets corresponding to the upper end portion of the elastic sheet are arranged on the bottom surface of the nut.

2. The removable locknut of claim 1, wherein: offer the notch along circumference equipartition on the gasket, the shell fragment is located the notch department of gasket respectively, and this shell fragment upwards rolls up the stick up, and a lateral wall setting that the groove was kept away to the packing ring is the inclined plane, and the shell fragment pastes and leans on the inclined plane of keeping away the groove.

3. The removable locknut of claim 2, wherein: the inclined plane of the gasket avoiding groove is provided with a groove corresponding to the elastic sheet.

4. The removable locknut of claim 3, wherein: and locking teeth are arranged on the bottom surface of the washer and respectively penetrate through the notches of the gasket.

5. The removable locknut of claim 1, 2, 3 or 4, wherein: the avoiding grooves on the gasket are uniformly distributed along the circumferential direction.

6. The removable locknut of claim 1, 2, 3 or 4, wherein: the nut is a flange nut, and the ratchets on the nut are uniformly distributed along the circumferential direction.