CN218542882U - Locknut with elastic anti-loosening structure - Google Patents

Abstract

The utility model relates to a bolt technical field, a locknut with elasticity anti loosening structure, including plum blossom shape button head bolt main part, the laminating of plum blossom shape button head bolt main part top is provided with the lag, and lag one end cup joints on the top circle head of plum blossom shape button head bolt main part, the washer structure has been cup jointed on the helicitic texture of plum blossom shape button head bolt main part, and wherein the washer structure includes bottom plate, fly leaf and a plurality of group springs, the fly leaf bottom is through a plurality of group springs and bottom plate one end swing joint, the lag passes through joint piece and bottom plate one end joint around the circumferencial direction, and it has a plurality of joint pieces to distribute around the circumference annular of lag, can guarantee that the lag cup joints when plum blossom shape button head bolt main part top, can not drop easily because of other mechanical oscillation to lose the guard action, the utility model discloses simple structure sets up rationally, has the practicality.

Description

Locknut with elastic anti-loosening structure

Technical Field

The utility model relates to a bolt technical field specifically is a locknut with elasticity anti loosening structure.

Background

The fastener is a mechanical part which is used for fastening connection and has extremely wide application. The fastener is widely used in the industries including energy, electronics, electrical appliances, machinery, chemical industry, metallurgy, molds, hydraulic pressure and the like, and various fasteners can be seen on various machines, equipment, vehicles, ships, railways, bridges, buildings, structures, tools, instruments, chemical industry, instruments, supplies and the like, and are the most widely applied mechanical basic parts. It features various varieties and specifications, different functions and usages, and very high standardization, serialization and universalization degrees. Thus, one type of fastener that has a national standard is also referred to as a standard fastener, or simply a standard.

The nut and the bolt are mechanical fixing pieces with wide application. When a common nut is matched with a bolt to fix a mechanical part, the time is long due to mechanical movement or vibration, and the nut is easy to loosen and fall off, so that a fixed part is displaced or loosened. If light, damage to mechanical parts and if heavy, failure or accident may occur. In order to solve the problem of loosening of the nut, various anti-loosening nuts or devices are designed according to different application conditions and environments, and the anti-loosening nuts or devices play some anti-loosening role to a certain extent, such as the nut disclosed in CN202023097390.9, but the nut has a common loosening effect.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a locknut with elasticity anti loosening structure to solve the problem that proposes among the above-mentioned background art.

In order to achieve the purpose, the anti-loose nut with the elastic anti-loose structure is characterized in that the elastic anti-loose mechanism is connected to the lower end of the nut body and comprises a shock absorber and a magnet, the shock absorber is fixedly connected to one end of the nut body, the other end of the shock absorber is fixedly connected to the magnet, and the magnet is adsorbed on the surface of a metal object.

Preferably: the magnet can be replaced by a sucker.

Preferably, the following components: the anti-loosening nut comprises an anti-loosening nut body and an annular boss, wherein the anti-loosening nut body and the annular boss are coaxially arranged, and the annular boss is fixedly arranged at one end of the anti-loosening nut body in the axial direction;

the annular boss is provided with a group of slots, the slots are sequentially arranged along the axial direction of the annular boss, and the slots are located in the radial direction of the annular boss.

Preferably, the following components: the section of the annular boss is circular.

Preferably, the following components: the inner wall of the locknut body and the inner wall of the annular boss are both located on the same circumference, and internal threads with the same pitch are arranged on the inner wall of the locknut body and the inner wall of the annular boss.

Preferably: the number of the group of the slots is 2, the slots are respectively a first slot and a second slot, the central angles of the first slot and the second slot are both 225 degrees, the first slot and the second slot are symmetrically distributed in the radial direction of the annular boss, and the first slot is located at the end part, close to the locknut body, of the annular boss.

Preferably: the locknut body and the annular boss are made of 304 stainless steel.

Preferably: the inner wall of the locknut body far away from one end of the annular boss is provided with a first chamfer, and the inner wall of the annular boss far away from one end of the locknut body is provided with a second chamfer.

Preferably: the locknut body is a hexagon nut.

Compared with the prior art, the beneficial effects of the utility model are that:

1. can effectually prevent not hard up of nut through the locking subassembly of elasticity.

2. Lag size and the circular head size adaptation on plum blossom shape button head bolt main part top, plum blossom shape button head that can effectual protection plum blossom shape button head bolt main part top receives external corruption, increase the life of bolt, it has a plurality of joint pieces to distribute around the circumference annular of lag, can guarantee that the lag cup joints when plum blossom shape button head bolt main part top, can not drop easily because of other mechanical vibration, thereby lose the guard action, adopt the metal material that ductility is good to make, guarantee can be convenient when dismantling the bolt to take off the lag, while lag can repetitious usage many times, both environmental protection have reduced the cost, the inner circle diameter size of bottom plate and fly leaf all is less than the helicitic texture diameter size of plum blossom shape button head bolt main part bottom, even guaranteed when taking off the bolt, the packing ring structure can not drop because of the action of gravity yet, the utility model has the advantages of being simple in structure, reasonable in arrangement, and practicability.

Drawings

FIG. 1 is a schematic view of the elastic anti-loosening mechanism of the present invention;

fig. 2 is a front view of the locknut with the elastic anti-loosening structure of the present invention;

fig. 3 is a top view of the locknut with the elastic anti-loosening structure of the present invention;

fig. 4 is a cross-sectional view of the locknut with the elastic anti-loosening structure of the present invention;

fig. 5 is a schematic structural view of the locknut with the elastic anti-loosening structure of the present invention during application.

In the figure:

1. a locknut body; 11. chamfering; 2. an annular boss; 21. grooving; 22. slotting; 23. grooving II; 24. chamfering II; 3. a shock absorber; 4. a magnet; 5. and (4) sucking discs.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

Examples

Referring to fig. 1-5, in the locknut with the elastic anti-loosening structure, the lower end of the nut body is connected with the elastic anti-loosening mechanism, the elastic anti-loosening mechanism includes a damper and a magnet, the damper is fixedly connected to one end of the nut body, the other end of the damper is fixedly connected to the magnet, and the magnet is adsorbed on the surface of a metal object. The shock caused by the shock is absorbed by the shock absorber, so that the nut is prevented from loosening.

The magnet can be replaced by a sucker, so that some non-metallic objects can be conveniently adsorbed.

The anti-loosening nut comprises an anti-loosening nut body 1 and an annular boss 2, wherein the anti-loosening nut body 1 and the annular boss 2 are coaxially arranged, and the annular boss 2 is fixedly arranged at one end of the anti-loosening nut body 1 in the axial direction; the annular boss 2 is provided with a group of slots 21, the slots 21 are sequentially arranged along the axial direction of the annular boss 2, and the slots 21 are located in the radial direction of the annular boss 2. And, locknut body 1 is the hexagon nut.

In the structure, the section of the annular boss 2 is circular. The inner wall of the locknut body 1 and the inner wall of the annular boss 2 are both located on the same circumference, and internal threads with the same pitch are arranged on the inner wall of the locknut body 1 and the inner wall of the annular boss 2.

In addition, the number of the set of slots 21 is 2, the slots are respectively a slot I22 and a slot II 23, the central angles of the slot I22 and the slot II 23 are both 225 degrees, the slot I22 and the slot II 23 are symmetrically distributed in the radial direction of the annular boss 2, and the slot I22 is positioned on the end part, close to the locknut body 1, of the annular boss 2.

And thirdly, the locknut body 1 and the annular boss 2 are made of 304 stainless steel.

The inner wall of locknut body 1, which is far away from one end of annular boss 2, is provided with a first chamfer 11, and the inner wall of locknut body 1, which is far away from one end of annular boss 2, is provided with a second chamfer 24.

The utility model discloses a locknut with elasticity anti loosening structure:

this nut is through carrying out the riveting to upper portion open groove structure, changes the internal screw pitch relation in upper portion, utilizes upper portion open groove structure's elasticity to reach locking effect, concrete analysis as follows:

when the nut is assembled with the bolt, the nut is deformed due to the riveting of the upper part, so that the thread pitch of the nut is smaller than that of the bolt, part of torque of the bolt is used for offsetting elastic force generated by the deformation of the upper part during the assembly (in the process, the bolt can cause the upper part of the nut to rebound to a state before riveting), and therefore, the upper end of the nut can provide a downward force F2 for the bolt, as shown in figure 4; when the bolt and the nut are assembled, the lower half part of the nut provides an upward force F1 for the whole threaded connection pair, and the force provides a stable clamping force for the whole system and overcomes the force of the upper part of the nut to deform.

When there is axial play in the entire system:

1. downward play, i.e. impact of the bolt on the nut

When the nut moves downwards, the lower part (locking area) of the nut needs to provide larger axial force to overcome the axial movement, at the moment, F1 is increased, the positive pressure between the threads of the bolt and the nut is increased, the friction force between the threads of the bolt and the nut is increased, and the self-locking capacity between the bolt and the nut is indirectly increased; so that the bolt and nut will not become loose. (when the nut moves downwards, the upper structure of the nut will not change greatly and the stress condition will not change greatly because the lower part of the nut and the connecting part of the bolt will not have large displacement or deformation)

2. Upward play, i.e. upward impact of the bolt on the nut

When the whole system moves upwards, the bolt and the whole system have a tendency of moving upwards, and due to the clearance between the upper part of the bolt thread and the upper part of the nut thread, the movement tendency causes the upper part of the nut to deform more, and F2 is increased, and the positive pressure between the lower part of the upper half part of the nut thread and the upper part of the bolt thread in the process is increased, so that the friction force between the lower part of the upper half part of the nut thread and the upper part of the bolt thread is increased. (in short, during the upward movement, the friction force of the contact part of the lower part of the nut is reduced, but the friction force of the contact part of the upper part is increased, and the nut has better loosening effect through the compensation of the upper friction force).

3. In contrast to conventional nuts

Compared with the common nut, when the common nut is subjected to upward movement, the positive pressure between the threads is reduced or even disappears, which directly results in the reduction of the friction force between the threads, so that the possibility of relative displacement of the bolt and the nut (namely, loosening of the nut and the bolt) is increased; the locknut prevents the loosening of the threaded connection pair by changing the structure and ensuring that a reliable friction force always exists between the threaded pair.

The above description is provided for further details of the present invention, and it should not be assumed that the present invention is limited to these descriptions, and it will be appreciated by those skilled in the art that various modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (9)

1. The utility model provides a locknut with elasticity anti loosening structure which characterized in that: the lower extreme of nut body is connected with elasticity locking mechanism, elasticity locking mechanism includes bumper shock absorber and magnetite, bumper shock absorber fixed connection is in the one end of nut body, the other end fixed connection of bumper shock absorber is on the magnetite, the magnetite adsorbs on metal object surface.

2. The locknut with the elastic locking structure as claimed in claim 1, wherein: the magnet can be replaced by a sucker.

3. The locknut with the elastic locking structure as claimed in claim 1, wherein: the anti-loosening nut comprises an anti-loosening nut body and an annular boss, wherein the anti-loosening nut body and the annular boss are coaxially arranged, and the annular boss is fixedly arranged at one end of the anti-loosening nut body in the axial direction;

the annular boss is provided with a group of slots, the slots are sequentially arranged along the axial direction of the annular boss, and the slots are located in the radial direction of the annular boss.

4. The locknut with the elastic locking structure as claimed in claim 3, wherein: the section of the annular boss is circular.

5. The locknut with the elastic anti-loosening structure according to claim 3, wherein: the inner wall of the locknut body and the inner wall of the annular boss are both located on the same circumference, and internal threads with the same pitch are arranged on the inner wall of the locknut body and the inner wall of the annular boss.

6. The locknut with the elastic anti-loosening structure according to claim 3, wherein: the number of the group of the slots is 2, the slots are respectively a first slot and a second slot, the central angles of the first slot and the second slot are both 225 degrees, the first slot and the second slot are symmetrically distributed in the radial direction of the annular boss, and the first slot is located at the end part, close to the locknut body, of the annular boss.

7. The locknut with the elastic locking structure as claimed in claim 3, wherein: the locknut body and the annular boss are made of 304 stainless steel.

8. The locknut with the elastic locking structure as claimed in claim 3, wherein: the inner wall of the locknut body, far away from one end of the annular boss, is provided with a first chamfer, and the inner wall of the annular boss, far away from one end of the locknut body, is provided with a second chamfer.

9. The locknut with the elastic anti-loosening structure according to claim 3, wherein: the locknut body is a hexagon nut.

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