CN218377276U

CN218377276U - Integral type locknut

Info

Publication number: CN218377276U
Application number: CN202222449138.2U
Authority: CN
Inventors: 李志刚; 向晓兵; 胡春生; 成红科; 尤建波
Original assignee: Handan Qunxing Hardware Products Co ltd
Current assignee: Handan Qunxing Hardware Products Co ltd
Priority date: 2022-09-16
Filing date: 2022-09-16
Publication date: 2023-01-24
Anticipated expiration: 2032-09-16

Abstract

The utility model discloses an integral type locknut, including convex nut and concave nut, connect through interlock mechanism between convex nut and the concave nut, interlock mechanism includes bellying, interlock sawtooth one, depressed part and interlock sawtooth two. The beneficial effects of the utility model are that, interlock mechanism through being located between convex nut and the concave nut adopts the bellying respectively, depressed part and a set of interlock sawtooth can produce great frictional resistance, thereby play locking effect, the contact surface can tightly be bitten by the radial sawtooth of lock washer bottom, make convex nut and contact surface relatively fixed, when the emergence vibration, convex nut and concave nut relative movement can be stopped by a set of interlock sawtooth, and simultaneously, lateral pressure can be applyed to the bolt to the screw rod of rectifying, prevent that eccentric force from influencing holistic antifatigue intensity and the life of bolt.

Description

Integral type locknut

Technical Field

The utility model relates to a locknut field specifically is an integral type locknut.

Background

Locknuts, self-tightening nuts, are a common type of fastening locknut. Including mechanical anti-loosening, rivet-punch anti-loosening, friction anti-loosening, structural anti-loosening and the like. The special engineering plastics are permanently attached to the threads, so that the engineering plastics are extruded to generate strong reaction force in the process of tightening the inner threads and the outer threads, the friction force between the inner threads and the outer threads is greatly increased, and the absolute resistance to vibration is provided.

The principle of the nut is that two nuts in a concave shape and a convex shape are used on one screw nail, the lower part of the nut is in a convex shape, the center of the nut slightly dislocates (is eccentrically machined) during machining, the upper nut is locked through eccentric pressure, however, the occlusion between the nut and the bolt is necessarily deviated to one side, and the eccentric force tends to influence the integral fatigue resistance and the service life of the bolt after a long time.

SUMMERY OF THE UTILITY MODEL

To above defect, the utility model provides an integral type locknut to solve locknut's fatigue resistance and life problem.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

an integrated locknut comprises a convex nut and a concave nut, wherein the convex nut and the concave nut are connected through an occlusion mechanism;

the meshing mechanism comprises a protruding portion, a first meshing sawtooth, a recessed portion and a second meshing sawtooth, the protruding portion is arranged at the upper end of the convex nut, the first meshing sawtooth is uniformly arranged on the upper surface of the protruding portion, the recessed portion is provided with the bottom of the concave nut, and the second meshing sawtooth is uniformly arranged on the inner surface of the recessed portion and is meshed with the first meshing sawtooth.

Furthermore, a circular groove is formed in the upper end of the concave nut.

Furthermore, the right side of the upper end of the concave nut is provided with a first thread groove communicated with the circular groove, a deviation-correcting screw rod is inserted in the first thread groove, and the rear end of the deviation-correcting screw rod is provided with an inner hexagonal screw rod head.

Furthermore, the convex part is processed eccentrically, the concave part is processed circularly, and the convex nut and the concave nut are respectively provided with a second internal thread corresponding to the bolt.

Furthermore, the bottom of the convex nut is fixedly connected with a check washer, and the bottom of the check washer is uniformly provided with radial sawteeth.

Furthermore, the gradients of the first meshing sawtooth and the second meshing sawtooth are respectively larger than the angle of the thread of the bolt.

The utility model provides an integral type locknut, the following beneficial effect is possessed, interlock mechanism through being located between convex nut and the concave nut adopts the bellying respectively, depressed part and a set of interlock sawtooth can produce great frictional resistance, thereby play locking effect, the contact surface can tightly be bitten by the radial sawtooth of lock washer bottom, make convex nut and contact surface relatively fixed, when taking place the vibration, convex nut and concave nut relative movement can be stopped by a set of interlock sawtooth, and simultaneously, lateral pressure can be applied to the bolt to the screw rod of rectifying, prevent that eccentric force from influencing holistic anti fatigue strength and life of bolt.

Drawings

Fig. 1 is a schematic view of an integrated locknut of the present invention.

Fig. 2 is an appearance view of the convex nut of the present invention.

Fig. 3 is an external view of the concave nut of the present invention.

Fig. 4 is a top view of the convex nut of the present invention.

Fig. 5 is a bottom view of the concave nut of the present invention.

Fig. 6 is a top view of the concave nut of the present invention.

Figure 7 is the utility model discloses a screw rod schematic diagram rectifies.

In the figure: 1. a male nut; 2. a concave nut; 3. a boss portion; 4. meshing the first saw teeth; 5. a recessed portion; 6. a second meshing sawtooth; 7. a circular groove; 8. a first thread groove; 9. a deviation rectifying screw; 10. an inner hexagonal screw head; 11. a second internal thread; 12. a lock washer; 13. and radial saw teeth.

Detailed Description

The invention will be described in detail below with reference to the accompanying drawings, as shown in fig. 1-7: an integrated locknut comprises a convex nut 1 and a concave nut 2, wherein the convex nut 1 and the concave nut 2 are connected through an occlusion mechanism; the meshing mechanism comprises a convex part 3, a first meshing sawtooth 4, a concave part 5 and a second meshing sawtooth 6, wherein the convex part 3 is arranged at the upper end of the convex nut 1, the first meshing sawtooth 4 is uniformly arranged on the upper surface of the convex part 3, the concave part 5 is arranged at the bottom of the concave nut 2, and the second meshing sawtooth 6 is uniformly arranged on the inner surface of the concave part 5 and is meshed with the first meshing sawtooth 4; the upper end of the concave nut 2 is provided with a circular groove 7; a first thread groove 8 communicated with the circular groove 7 is formed in the right side of the upper end of the concave nut 2, a deviation correcting screw 9 is inserted into the first thread groove 8, and an inner hexagonal screw head 10 is installed at the rear end of the deviation correcting screw 9; the convex part 3 is processed eccentrically, the concave part 5 is processed circularly, and the convex nut 1 and the concave nut 2 are respectively provided with a second internal thread 11 corresponding to the bolt; the bottom of the convex nut 1 is fixedly connected with a lock washer 12, and the bottom of the lock washer 12 is uniformly provided with radial sawteeth 13; the slopes of the first meshing sawteeth 4 and the second meshing sawteeth 6 are respectively larger than the angle of the bolt thread.

The working principle of the embodiment is as follows: the convex part 3 is processed eccentrically, the concave part 5 is processed circularly, and the convex nut 1 and the concave nut 2 are respectively provided with a second internal thread 11 corresponding to the bolt;

during installation: the user firstly hangs and screws the convex nut 1 on the bolt, the bottom of the convex nut 1 is fixedly connected with a lock washer 12, the bottom of the lock washer 12 is uniformly provided with radial sawteeth 13, the direction of the radial sawteeth 13 is the same as the hanging and screwing direction of the convex nut 1, the radial sawteeth 13 can tightly bite the contact surface of the connecting piece, so that the convex nut 1 and the contact surface are relatively fixed, then, the concave nut 2 is hung and screwed, the convex part 3 is arranged at the upper end of the convex nut 1, the first biting sawteeth 4 are uniformly arranged on the upper surface of the convex part 3, the concave part 5 is arranged at the bottom of the concave nut 2, the second biting sawteeth 6 are uniformly arranged on the inner surface of the concave part 5 and are mutually meshed with the first biting sawteeth 4, the slopes of the first biting sawteeth 4 and the second biting sawteeth 6 are respectively larger than the angle of the thread of the bolt, after the concave nut 2 is screwed to the bottom, the concave nut 2 is continuously screwed, so that the concave nut 2 is forced to press the convex nut 1, and the concave conical surface of the convex nut 3 and the concave part 5 can generate larger friction resistance, thereby, meanwhile, the purpose is achieved, the first biting sawteeth 4 are meshed with the second biting sawteeth 6, as shown in figure 1, when the concave nut 1 and the concave nut are relatively moved, the concave nut 6 can be prevented from vibrating;

the upper end of the concave nut 2 is provided with a circular groove 7, the right side of the upper end of the concave nut 2 is provided with a first thread groove 8 communicated with the circular groove 7, a deviation-correcting screw 9 is inserted in the first thread groove 8, the rear end of the deviation-correcting screw 9 is provided with an inner hexagonal screw head 10, a user twists the deviation-correcting screw 9 through an inner hexagonal wrench, so that the deviation-correcting screw 9 applies lateral pressure to the right side of the bolt, the influence of eccentric force generated by the convex part 3 and the concave part 5 on the integral fatigue resistance and service life of the bolt is prevented, the convex part 3, the concave part 5 and a group of meshing sawteeth can generate larger friction resistance through a meshing mechanism between the convex nut 1 and the concave nut 2, so that the function of preventing looseness is achieved, the radial sawteeth 13 at the bottom of the anti-loosening gasket 12 can tightly bite the contact surface, the convex nut 1 and the contact surface are relatively fixed, when vibration occurs, the convex nut 1 and the concave nut 2 can relatively move and can be prevented by the group of meshing sawteeth, meanwhile, the deviation-correcting screw 9 can apply lateral pressure to prevent the eccentric force from influencing the integral fatigue resistance and service life of the bolt.

Above-mentioned technical scheme has only embodied the utility model discloses technical scheme's preferred technical scheme, some changes that this technical field's technical staff probably made to some parts wherein have all embodied the utility model discloses a principle belongs to within the protection scope of the utility model.

Claims

1. An integrated anti-loose nut comprises a convex nut (1) and a concave nut (2), and is characterized in that the convex nut (1) and the concave nut (2) are connected through an occlusion mechanism;

the occlusion mechanism comprises a first protruding portion (3), a first occlusion sawtooth (4), a second recessed portion (5) and a second occlusion sawtooth (6), wherein the protruding portion (3) is arranged at the upper end of the convex nut (1), the first occlusion sawtooth (4) is uniformly arranged on the upper surface of the protruding portion (3), the recessed portion (5) is provided with a bottom of the concave nut (2), and the second occlusion sawtooth (6) is uniformly arranged on the inner surface of the recessed portion (5) and is mutually meshed with the first occlusion sawtooth (4).

2. An integral locknut according to claim 1, characterized in that the concave nut (2) is provided with a circular groove (7) at its upper end.

3. The integrated anti-loose nut as claimed in claim 1 or claim 2, wherein the right side of the upper end of the concave nut (2) is provided with a first threaded groove (8) communicated with the circular groove (7), a deviation correcting screw (9) is inserted into the first threaded groove (8), and the rear end of the deviation correcting screw (9) is provided with an inner hexagonal screw head (10).

4. The one-piece locknut of claim 1, characterized in that the convex part (3) is processed eccentrically, the concave part (5) is processed circularly, and a second internal thread (11) corresponding to the bolt is opened in the convex nut (1) and the concave nut (2), respectively.

5. The integrated locknut of claim 1, characterized in that a lockwasher (12) is fixedly connected to the bottom of the convex nut (1), and radial saw teeth (13) are uniformly arranged on the bottom of the lockwasher (12).

6. The one-piece locknut of claim 1, wherein the slope of the first (4) and second (6) engaging serrations is respectively greater than the angle of the bolt thread.