CN223708244U

CN223708244U - A type of anti-loosening nut

Info

Publication number: CN223708244U
Application number: CN202520513124.3U
Authority: CN
Inventors: 刘一博; 刘铸
Original assignee: Baoji Xingshun Machinery Manufacturing Co ltd
Current assignee: Baoji Xingshun Machinery Manufacturing Co ltd
Priority date: 2025-03-21
Filing date: 2025-03-21
Publication date: 2025-12-23
Anticipated expiration: 2035-03-21

Abstract

The utility model discloses a locknut which comprises a nut body, wherein a spring body is arranged at one end opening of the nut body, and the spring body is fixedly arranged on the end surface of the nut body. The nut is directly arranged at the upper end of the nut, and is directly used in assembly without an additional fixing structure, so that the installation process is simple, the matching requirement is low, the nut body is formed by drilling through a sinking table and assembling and welding the spring, the nut body is suitable for automatic and large-scale production, centering is free from deformation, the quality is stable, the shock resistance and anti-loosening limit of the spring anti-loosening nut is improved, in addition, the nut body is a common standard nut, no additional processing is needed, the production cost is greatly reduced, and the production efficiency is improved.

Description

Lock nut

Technical Field

The utility model relates to the technical field of machining part preparation, in particular to a locknut.

Background

The locknut is a part for mechanical connection, is used for being matched with screws, is used for various industries such as railways, automobiles, electric, machinery, shipbuilding, construction, steel and the like, can fasten the fixed connection, and prevents loosening, falling and losing under the condition of high-speed running or strong vibration, so that equipment or parts in working generate mechanical faults and are dangerous.

In the prior art, in order to prevent loosening, a high-load nut utilizes the spring characteristic of an integral structure with the nut, so that the problems of easy loosening and easy falling of the nut are fundamentally solved, but when the nut is used for fixing a spring, a spring retainer is required to be arranged, the body of the spring retainer is high in matching requirement with the spring retainer, the spring retainer is usually produced by a thin-wall seamless pipe with the wall thickness of 0.3/0.4, the material limit of a pulling pipe is exceeded, the cost is high, the forming size of the retainer is strictly required, the riveting method is strictly required due to the difference caused by material tolerance, the positioning inaccuracy of the spring and deformation interference of the retainer are slightly carelessly caused, the production method is complex, and mass production is difficult to realize.

In the disclosure patent 2021214010998, a locknut structure is also provided, which comprises a nut body and a spring body arranged on the nut body, wherein one end in the nut body is provided with threads, the other end is provided with a sinking table drilling hole, the inner wall of the sinking table drilling hole is a smooth surface, the spring body is arranged in the sinking table drilling hole, and the outer ring of the spring body is fixedly connected with the end face of the nut body. In this structure, use the nut body to need processing sinking platform drilling just can carry out the installation of spring for whole manufacturing cost increases, and efficiency reduces.

Disclosure of utility model

In view of the above-mentioned drawbacks or shortcomings, an object of the present utility model is to provide a locknut.

In order to achieve the above purpose, the technical scheme of the utility model is as follows:

A locknut comprises a nut body, wherein a spring body is installed at one end opening of the nut body, and the spring body is fixedly installed on the end face of the nut body.

The diameter of the spring body is equal to the diameter of the inner hole of the nut body.

One end of the spring body is fixedly arranged on the end face of the nut body after extending and bending.

The other end of the spring body extends out and bends to be arranged outside the nut body to form a disassembly handle

One end of the spring body is welded on the end face of the nut body after extending and bending.

One end of the spring body is fixed on the end face of the nut body through the pressing piece after extending and bending.

The pressing piece is of an arch structure.

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

The utility model provides a locknut, which can directly install a matched spring body on the nut, has the clamping function of a spring when being installed with a screw rod, and is integrally installed with the nut, so that the looseness and the falling of the nut are prevented by utilizing the spring characteristic of an integral structure with the nut, the utility model can directly install the spring body at the upper end of the nut and directly use the locknut when being assembled, no additional fixing structure is needed, so that the installation process is simple, the matching requirement is not high, the body is assembled and welded with the spring through the drilling of the sinking table, the automatic centering device is suitable for automatic and large-scale production, the centering is free from deformation, the quality is stable, the anti-vibration anti-loosening limit of the spring anti-loosening nut is improved, in addition, the nut body is a common standard nut, no additional processing is needed, the production cost is greatly reduced, and the production efficiency is improved.

Drawings

FIG. 1 is a schematic view of a locknut of the device of the present utility model;

FIG. 2 is a schematic diagram of a locknut of the device of the present utility model;

FIG. 3 is a schematic view of a locknut of the device of the present utility model;

fig. 4 is a schematic diagram of a locknut of the device of the present utility model.

In the figure, 1-nut body, 2-spring body, 21-dismounting handle and 3-pressing piece.

Detailed Description

The present utility model now will be described more fully hereinafter with reference to the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to fall within the scope of the utility model.

As shown in fig. 1, the utility model provides a locknut, which is characterized by comprising a nut body 1, wherein a spring body 2 is arranged at one end opening of the nut body 1, and the spring body 2 is fixedly arranged on the end surface of the nut body 1.

In the utility model, in order to assemble and use again, the spring body 2 can clamp the screw rod, and the diameter of the spring body 2 is equal to the diameter of the inner hole of the nut body 1. However, in order to fix the spring body 2 to the end face of the nut body 1, the movable end of the spring needs to be fixed to the end face of the nut body 1, so the present utility model provides two fixing methods.

In the present utility model, the outer end of the spring body 2 is fixed to the end surface of the nut body 1 by a jig by a person skilled in the art, and the present utility model is described by way of example, but the specific fixing method is not limited thereto, and other fixing connection methods are also within the scope of the present utility model.

Specifically, in the utility model, two fixed connection modes are provided between the outer end and the end face of the spring body 2:

The first way is shown in fig. 1 and 2, one end of the spring body 2 is extended and bent and then fixedly arranged on the end face of the nut body 1, the other end of the spring body 2 is extended and bent and then arranged outside the nut body 1 to form a disassembly handle 21, and specifically, one end of the spring body 2 is extended and bent and then welded on the end face of the nut body 1. The fixing method of the mode enables the spring to be simple in structure, additional machining is not needed, the spring and the end face are only needed to be welded or welded after being positioned, the operation process is simple and convenient, and the working efficiency is high.

In the second mode, as shown in fig. 3 and 4, one end of the spring body 2 is fixed on the end face of the nut body 1 through the pressing piece 3 after being stretched and bent, and the other end of the spring body 2 is arranged outside the nut body 1 after being stretched and bent to form a disassembling handle 21, in the utility model, the pressing piece 3 is of an arch structure, and the end part can be welded and fixed after being wrapped, so that the mode is firmer and has long service life.

In the utility model, the spring body is directly and fixedly arranged on the end face of the nut body 1, so that the nut body does not need to be additionally processed, and the production cost is greatly reduced by using standard internal hexagonal nuts, square nuts, special-shaped nuts or the like.

The nut body 1 adopts a structure which can be detached by using a universal tool, can be reused, replaces the existing product, and reduces the maintenance cost. The installation and the disassembly of the locknut do not need special skills and a general tool, so the disassembly handle 21 of the spring body 2 is connected with the inner ring of the spring body 2 and led out of the nut body 1 to form the disassembly handle 21 capable of being pushed, and when the disassembly is needed, the disassembly handle 21 is pushed to directly enlarge the inner ring of the spring body 2 and separate from the threads on the screw rod, so that the nut body 1 is convenient to disassemble. The removal handle 21 may be an arc-shaped hook removal handle or a straight removal handle, for example.

The working process of the utility model is as follows:

The installation comprises the steps of fixedly installing the nut body 1 and the spring body 2 to obtain a locknut, normally screwing and installing the locknut and the screw rod when the locknut and the screw rod are installed, wherein threads 11 on the nut body 1 are matched with threads on the screw rod, and the spring body 2 is further clamped and fixed with the threads on the screw rod to prevent the looseness and the falling of the nut.

The disassembly handle 21 is pushed to expand the inner ring of the spring body connected with the disassembly handle 21, the spring body is separated from the threads on the screw rod, and the nut can be disassembled normally after the clamping is released.

The locknut has low cost and strong market competitiveness, can be used by using a standard nut piece, does not need to additionally process the nut, is suitable for automatic and large-scale production, has no deformation in centering and stable quality, and can improve the shock resistance and anti-loose limit of the spring locknut compared with a thin tube clamping spring structure due to the adoption of a welding process, reduces the production cost and is beneficial to mass production.

It will be apparent to those skilled in the art that the foregoing is merely illustrative of the preferred embodiments of this utility model, and that certain modifications and variations may be made in part of this utility model by those skilled in the art, all of which are shown and described with the understanding that they are considered to be within the scope of this utility model.

Claims

1. A locknut is characterized by comprising a nut body (1), wherein a spring body (2) is arranged at one end port of the nut body (1), the spring body (2) is fixedly arranged on the end face of the nut body (1), the diameter of the spring body (2) is equal to the diameter of an inner hole of the nut body (1), and one end of the spring body (2) is fixedly arranged on the end face of the nut body (1) after being stretched and bent.

2. Locknut according to claim 1, characterized in that the other end of the spring body (2) is arranged outside the nut body (1) after being stretched and bent to form a disassembly handle (21).

3. Locknut according to claim 1, characterized in that one end of the spring body (2) is welded to the end face of the nut body (1) after being bent.

4. Locknut according to claim 1, characterized in that one end of the spring body (2) is fixed on the end face of the nut body (1) by a pressing piece (3) after extending and bending.

5. Locknut according to claim 4, wherein the press element (3) is of an arch-like structure.