CN215257325U

CN215257325U - Anti-loose locking nut

Info

Publication number: CN215257325U
Application number: CN202121742391.6U
Authority: CN
Inventors: 刘志斌
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-07-28
Filing date: 2021-07-28
Publication date: 2021-12-21
Anticipated expiration: 2031-07-28

Abstract

The utility model discloses a locking lock nut, including lock nut, the lock nut center is provided with the screw hole, the inner wall of screw hole is followed the center equipartition of screw hole is provided with locking breach, locking breach sets up lock nut is close to the one end of work piece, the degree of depth more than or equal to of locking breach the screw thread tooth height of screw hole. The utility model discloses a locking lock nut simple structure, in lock nut and lock bolt use, under lock nut and lock bolt's interact, lock nut and lock bolt's screw thread produced elastic deformation, and lock bolt's external screw thread and lock nut's internal thread meshing produce the dislocation, lock bolt's external screw thread with lock nut's locking breach meshing can not arrive, consequently can not produce the deformation to reach locking effect.

Description

Anti-loose locking nut

Technical Field

The utility model relates to a locking lock nut technical field, in particular to locking lock nut.

Background

The process of clamping the workpiece under the action of external force (torque) is the process of enabling the internal thread of the nut to be continuously extruded into the external thread of the bolt by the external force, so that the nut is pressed and the bolt is pulled, the stress phenomenon of the front three threads of the threads is that the nut clamps the workpiece under the action of the external force (torque), the threads in the full screwing length are not all stressed in the axial direction of the common threads, the front three threads close to the workpiece are stressed greatly, and the stress of the rear threads is small or even not stressed. The stress phenomenon of the first three buttons is an important reason that the common thread cannot prevent looseness. The first three threads of the screw thread are stressed by testing triangular screw threads, sawtooth screw threads, pipe screw threads and even MJ aviation special screw threads.

Therefore, it is desirable to provide a lock nut with a simple structure to solve the existing problems.

SUMMERY OF THE UTILITY MODEL

To the defect among the prior art, the utility model provides a locking lock nut.

In order to realize the above-mentioned purpose, the utility model provides an anti-loosening lock nut, including lock nut, the lock nut center is provided with the screw hole, the inner wall of screw hole is followed the center equipartition of screw hole is provided with locking breach, locking breach sets up lock nut is close to the one end of work piece, the degree of depth more than or equal to of locking breach the screw thread height of screw hole.

Preferably, the height of the anti-loosening notch is 3-5 times of the thread pitch of the threaded hole.

Preferably, the number of the anti-loosening notches is more than or equal to 1.

Preferably, the number of the anti-loosening notches is 4.

Preferably, the anti-loosening notch is formed in the surface of the lock nut on one side of the workpiece.

Preferably, a boss is arranged on the outer circle side face of one end, close to the workpiece, of the nut.

Preferably, the workpiece fixing device further comprises a locking bolt matched with the locking nut, and the first workpiece and the second workpiece are fixedly connected with the locking nut through the locking bolt.

Has the advantages that:

the utility model discloses set up a locking lock nut, this locking lock nut includes lock nut, sets up the screw hole at lock nut center and setting are in threaded hole inner wall's locking breach, in lock nut and lock bolt use, under lock nut and lock bolt's interact, lock nut and lock bolt's screw thread produces elastic deformation, and lock bolt's external screw thread and lock nut's internal thread meshing produce the dislocation, lock bolt's external screw thread with lock nut's locking breach meshing does not arrive, consequently can not produce the deformation to reach locking effect.

Drawings

Fig. 1 is a schematic structural view of a locknut in an embodiment of the present invention;

fig. 2 is a schematic structural view of another view angle of the anti-loose lock nut according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a second embodiment of the present invention;

fig. 4 is a schematic structural diagram of three embodiments of the present invention;

FIG. 5 is a schematic structural view of the utility model in use;

FIG. 6 is a schematic view of a stress structure of a conventional nut in use;

the locking nut is 10-locking nut, 11-boss, 20-threaded hole, 21-anti-loosening notch, 22-tool withdrawal groove, 30-locking bolt, 40-first workpiece, 50-second workpiece, h-elastic deformation and 60-common nut.

Detailed Description

The present invention will be described in detail with reference to the following embodiments. The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that various changes and modifications can be made by one skilled in the art without departing from the spirit of the invention. These all belong to the protection scope of the present invention.

Refer to fig. 1 to 6

The utility model provides a locking lock nut, including lock nut 10, through lock nut 10 and with the lock bolt 30 of lock nut 10 adaptation is to

first work piece

40 and 50 fixed connection of second work piece, in the use, lock bolt 30 with lock nut 10 produces elastic deformation h, lock nut 10 center is provided with screw hole 20, screw hole 20's inner wall is followed the center equipartition of screw hole 20 is provided with locking breach 21, locking breach 21 sets up lock nut 10 is close to the one end of work piece, the degree of depth more than or equal to of locking breach 21 the screw thread tooth height of screw hole 20. And a tool withdrawal groove 22 is formed at one end of the anti-loosening notch 21 far away from the workpiece. The external thread of the locking bolt 30 is meshed with the internal thread of the locking nut 10 to generate dislocation, and the external thread of the locking bolt 30 is not meshed with the anti-loosening notch 21 of the locking nut 10, so that the first workpiece 40 and the second workpiece 50 are prevented from loosening.

In this embodiment, the height of the anti-loosening notch 21 is 3 to 5 times of the thread pitch of the threaded hole 20, and when the locking nut 10 and the locking bolt 30 are used, the front three threads close to a workpiece are stressed greatly, and the rear threads are stressed little or even not, so that the height of the anti-loosening notch 21 is 3 to 5 times of the thread pitch, and optimally, the height of the anti-loosening notch 21 is 4 times of the thread pitch.

In this embodiment, the number of the anti-loose notches 21 is greater than or equal to 1.

In this embodiment, the number of the anti-loosening notches 21 is 4.

In this embodiment, the anti-loosening notch is disposed on a surface of the lock nut on a side of the workpiece.

In this embodiment, the outer circumferential side surface of one end of the nut close to the workpiece is provided with a boss 11. One end of the boss 11 is used for being abutted to a workpiece, so that the contact area between the workpiece and the lock nut 10 is increased.

In the embodiment, the locking device further comprises a locking bolt 30 matched with the locking nut 10, and the first workpiece 40 and the second workpiece 50 are fixedly connected with the locking nut 10 through the locking bolt 30. The external thread of the locking bolt 30 is meshed with the internal thread of the locking nut 10 to generate dislocation, and the external thread of the locking bolt 30 is not meshed with the anti-loosening notch 21 of the locking nut 10, so that the first workpiece 40 and the second workpiece 50 are prevented from loosening.

Refer to FIG. 6

In the use process of the common nut 60 and the locking screw, the front three threads can obviously generate wave-shaped deformation.

Has the advantages that:

the utility model discloses a locking lock nut has been set up, this locking lock nut includes lock nut 10, sets up the screw hole 20 and the setting at lock nut 10 center are in the locking breach 21 of screw hole 20 inner wall, in lock nut 10 and lock bolt 30 use, under lock nut 10 and lock bolt 30's interact, lock nut 10 and lock bolt 30's screw thread produces elastic deformation h, and lock bolt 30's external screw thread and lock nut 10's female thread engagement produce the dislocation, lock bolt 30's external screw thread with lock nut 10's locking breach 21 meshing can not arrive, consequently can not produce and warp to reach locking effect.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

The foregoing is a more detailed description of the present invention that is presented in conjunction with specific embodiments, and it is not to be understood that the specific embodiments of the present invention are limited to these descriptions. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement.

Claims

1. The utility model provides an anti-loosening lock nut, its characterized in that, includes lock nut, the lock nut center is provided with the screw hole, the inner wall of screw hole is followed the center equipartition of screw hole is provided with locking breach, locking breach sets up lock nut is close to the one end of work piece, the degree of depth more than or equal to of locking breach the screw thread height of screw hole.

2. The locknut of claim 1 wherein the height of the lockgap is 3-5 times the pitch of the threaded hole.

3. The locknut of claim 1 wherein the number of locknotches is greater than or equal to 1.

4. The locknut of claim 1 wherein the number of locknotches is 4.

5. The locknut of claim 1 wherein the lockgap is provided in a surface of the locknut on a side of the workpiece.

6. The locknut of claim 1 wherein the outer circumferential side of the end of the nut adjacent the workpiece is provided with a boss.

7. The anti-loose lock nut according to claim 1, further comprising a lock bolt adapted to the lock nut, wherein the first workpiece and the second workpiece are fixedly connected to the lock nut through the lock bolt.