Retaining locknut

Abstract

The utility model relates to the technical field of fasteners, and provides a retaining locknut which comprises an outer nut body and an outer edge layer, the outer edge layer is arranged on the surface of the outer nut body, an anti-skid layer is arranged at the bottom of the outer nut body, an outer thread layer is arranged on the outer surface of the outer nut body, and a compression nut is connected to the outer thread layer in a screwed mode. The pressing anti-loosening assembly is arranged on the outer nut and the anti-skid layer, the locking assembly is arranged between the outer edge layer and the anti-skid layer, the round holes are formed in the periphery of the surface of the anti-skid layer, and a plurality of anti-loosening columns are movably connected into the outer edge layer in a sleeved mode. By means of the technical scheme, the problems that in the related technology, an existing nut is prone to loosening in the working environment of high-strength impact load, high-strength alternating load and dramatic temperature change, the retaining and loosening preventing effect is not ideal enough, and the requirement cannot be well met are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of fasteners, and in particular to a back-stopping and anti-loosening nut. Background Art

[0002] At present, nuts are a commonly used fastener and are widely used. Different occasions have different requirements for nuts. There are many methods to prevent bolts from loosening in China. Commonly used methods to increase friction include setting spring washers, double nuts, locking washers, tightening nuts, nylon inserts with chemical coating, etc. However, their reliability is unstable under heavy loads, severe vibrations, and harsh environmental conditions.

[0003] Existing nuts are prone to loosening in working environments subjected to high-intensity impact loads, high-intensity alternating loads, and drastic temperature changes, and the anti-loosening effect is not ideal and cannot meet the needs well.

[0004] Therefore, improvements are made to address the above problems. Utility Model Content

[0005] The utility model proposes a back-stop and anti-loosening nut, which solves the problem that the existing nuts in the related technology are easy to loosen in a working environment subjected to high-intensity impact loads, high-intensity alternating loads and drastic temperature changes, and the back-stop and anti-loosening effect is not ideal and cannot meet the needs well.

[0006] The technical solution of the utility model is as follows:

[0007] An outer nut and an outer layer, wherein the outer layer is arranged on the surface of the outer nut;

[0008] An anti-slip layer, the anti-slip layer is arranged at the bottom of the outer nut;

[0009] An external thread layer and a clamping nut, wherein the external thread layer is arranged on the outer surface of the external nut, and the clamping nut is screwed and connected to the external thread layer;

[0010] A pressing and anti-loosening component, wherein the pressing and anti-loosening component is arranged on the outer nut and the anti-slip layer;

[0011] A locking assembly, the locking assembly being disposed between the outer layer and the anti-slip layer;

[0012] The clamping and anti-loosening component comprises a plurality of circular holes, which are arranged around the surface of the anti-slip layer, and a plurality of anti-loosening columns are movably connected in the outer layer.

[0013] As a further technical solution, an anti-sliding block is provided at the bottom of the anti-loosening column, the anti-sliding block is inserted into the circular hole, and a first spring is sleeved and connected to the outside of the anti-loosening column.

[0014] As a further technical solution, the locking assembly includes a pair of connecting grooves, in which a connecting rod is rotatably connected, a vertical rod is arranged at one end of the connecting rod, an extension rod is arranged at the bottom of the vertical rod, and a sleeve is sleeved on the outside of the extension rod.

[0015] As a further technical solution, a second spring is connected between the sleeve and the extension rod, a mounting hole is provided on the surface of the sleeve, a plurality of threaded grooves are provided on the outer surface of the outer layer, a fixing screw is inserted into the mounting hole, and the fixing screw is screwed into the threaded groove.

[0016] As a further technical solution, the cross section of the mounting hole is a stepped structure.

[0017] As a further technical solution, the cross-sections of the connecting groove and one end of the connecting rod are both T-shaped structures.

[0018] As a further technical solution, the bottom of the anti-slip block is a frosted anti-slip structural surface.

[0019] As a further technical solution, the outer layer and the outer surface of the locking nut are both polygonal structures.

[0020] As a further technical solution, the vertical rod, the extension rod and the sleeve are all made of metal structural materials that can generate movement and bending.

[0021] As a further technical solution, the diameter of the anti-sliding block matches the inner diameter of the circular hole.

[0022] The working principle and beneficial effects of the utility model are:

[0023] The utility model is provided with a tightening and anti-loosening component, which can, through the interaction of structures such as a circular hole, an anti-loosening column, an anti-sliding block, a first spring and a clamping nut, simultaneously fit the surface of the workpiece through multiple anti-sliding blocks and the anti-slip layer, and the downward pressure of the anti-loosening column and the clamping nut can tightly and firmly fit the anti-loosening block to the surface of the workpiece, thereby achieving a firm and stable anti-loosening effect, effectively improving the use effect of the outer nut, and effectively avoiding loosening, and has good use effect and practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0025] Figure 1 It is a schematic diagram of the structure of the utility model;

[0026] Figure 2 This is the axonometric drawing of the utility model;

[0027] Figure 3 This is a cross-sectional view of the utility model;

[0028] Figure 4 For the utility model Figure 3 A partial enlarged view of part A;

[0029] In the figure: 1, external nut; 2, outer layer; 3, anti-slip layer; 4, external threaded layer; 5, clamping nut; 6, clamping and anti-loosening assembly; 6-1, round hole; 6-2, anti-loosening column; 6-3, anti-sliding block; 6-4, first spring; 7, locking assembly; 7-1, connecting groove; 7-2, connecting rod; 7-3, vertical rod; 7-4, extension rod; 7-5, sleeve; 7-6, second spring; 7-7, mounting hole; 7-8, threaded groove; 7-9, fixing screw. DETAILED DESCRIPTION

[0030] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] like Figure 1~Figure 4 As shown, this embodiment provides a back-stopping and anti-loosening nut, comprising

[0032] An outer nut 1 and an outer layer 2, wherein the outer layer 2 is arranged on the surface of the outer nut 1;

[0033] An anti-slip layer 3, wherein the anti-slip layer 3 is arranged at the bottom of the outer nut 1;

[0034] An external thread layer 4 and a clamping nut 5, wherein the external thread layer 4 is provided on the outer surface of the external nut 1, and the clamping nut 5 is screwed and connected to the external thread layer 4;

[0035] A pressing and anti-loosening component 6, wherein the pressing and anti-loosening component 6 is arranged on the outer nut 1;

[0036] A locking component 7, wherein the locking component 7 is arranged between the outer layer 2 and the anti-slip layer 3;

[0037] The clamping and anti-loosening component 6 includes a plurality of circular holes 6-1, and the circular holes 6-1 are opened around the surface of the anti-slip layer 3. A plurality of anti-loosening columns 6-2 are movably sleeved and connected inside the outer layer 2. An anti-loosening slide block 6-3 is arranged at the bottom of the anti-loosening column 6-2. The anti-loosening slide block 6-3 is inserted into the circular holes 6-1. The anti-loosening column 6-2 is sleeved and connected to the outside with a first spring 6-4.

[0038] In this embodiment, in order to achieve the effect of strengthening and preventing loosening, a clamping and anti-loosening component 6 is designed, and a plurality of circular holes 6-1 are opened on the surface of the anti-slip layer 3. The outer layer 2 just above the circular hole 6-1 is movably provided with an equal number of anti-loosening columns 6-2, and an anti-loosening sliding block 6-3 is provided at the bottom of the anti-loosening column 6-2. The anti-loosening sliding block 6-3 is located in the circular hole 6-1 and is provided with a first spring 6-4. The elastic force of the spring pushes the anti-loosening sliding block 6-3 downward so that the anti-loosening sliding block 6-3 fits the surface of the workpiece. The upper end of the anti-loosening column 6-2 passes through the outer layer 2 and is located at the top. When the clamping nut 5 is turned, the clamping nut 5 can move downward and can press the anti-loosening column 6-2 downward to increase the fit between the anti-loosening sliding block 6-3 and the workpiece, thereby maximizing the anti-loosening effect.

[0039] Furthermore, the locking assembly 7 includes a pair of connecting grooves 7-1, in which a connecting rod 7-2 is rotatably connected, a vertical rod 7-3 is provided at one end of the connecting rod 7-2, an extension rod 7-4 is provided at the bottom of the vertical rod 7-3, a sleeve 7-5 is connected to the outside of the extension rod 7-4, a second spring 7-6 is connected between the sleeve 7-5 and the extension rod 7-4, a mounting hole 7-7 is provided on the surface of the sleeve 7-5, a plurality of threaded grooves 7-8 are provided on the outer surface of the outer layer 2, a fixing screw 7-9 is inserted and connected in the mounting hole 7-7, and the fixing screw 7-9 is screwed and connected in the threaded groove 7-8.

[0040] The locking assembly 7 is designed to achieve the locking effect between the clamping nut 5 and the anti-slip layer 3. Two connecting grooves 7-1 are provided on the outer surface of the clamping nut 5. A connecting rod 7-2 is rotatably connected in the connecting groove 7-1. A vertical rod 7-3 is provided at one end of the connecting rod 7-2. An extension rod 7-4 is provided at the bottom of the vertical rod 7-3. A sleeve 7-5 is sleeved on the outside of the extension rod 7-4 and a second spring 7-6 is connected inside, so that the extension rod 7-4 and the sleeve 7-5 can be retracted. A mounting hole 7-7 is provided on the surface of the sleeve 7-5. A plurality of threaded grooves 7-8 are provided around the side surface of the anti-slip layer 3. A fixing screw 7-9 is inserted in the mounting hole 7-7. One end of the fixing screw 7-9 can be screwed into the threaded groove 7-8 to connect the clamping nut 5 to the anti-slip layer 3, so that the clamping nut 5 cannot rotate. Due to the rectangular structure of the extension rod 7-4 and the sleeve 7-5, the rotation of the clamping nut 5 is restricted, thereby playing a locking role.

[0041] Furthermore, the cross section of the mounting hole 7-7 is a stepped structure, and one end of the fixing screw 7-9 is countersunk inside the mounting hole 7-7.

[0042] In this embodiment, through the stepped structure, one end of the nut of the fixing screw 7-9 is sunk into the mounting hole 7-7, thereby improving the firmness.

[0043] Furthermore, the cross-sections of the connecting groove 7-1 and one end of the connecting rod 7-2 are both T-shaped structures.

[0044] In this embodiment, the T-shaped structure allows the connecting rod 7-2 to rotate in the connecting groove 7-1, but cannot be pulled out, thereby achieving an anti-slip effect.

[0045] Furthermore, the bottom of the anti-slip block 6-3 is a frosted anti-slip structural surface.

[0046] In this embodiment, the frosted anti-skid structural surface is used to increase the friction between the bottom of the anti-slip block 6 - 3 and the workpiece surface, and the anti-slip block 6 - 3 will not loosen easily.

[0047] Furthermore, the outer surface of the outer layer 2 and the outer surface of the locking nut 5 are both polygonal structures.

[0048] In this embodiment, the polygonal structure facilitates manual and tool-operated screwing.

[0049] Furthermore, the vertical rod 7-3, the extension rod 7-4 and the sleeve 7-5 are all made of metal structural materials that can produce movement and bending.

[0050] In this embodiment, the bendable metal structural material increases the strength and reinforces the compression nut 5 .

[0051] Furthermore, the diameter of the anti-sliding block 6-3 matches the inner diameter of the circular hole 6-1.

[0052] In this embodiment, by cooperating with the diameter of the anti-sliding block 6-3 and the circular hole 6-1, after the anti-sliding block 6-3 is reinforced and limited, there will be no movable space for the outer nut 1, thereby improving the anti-slip and firmness effects.

[0053] When it is needed, screw the outer nut 1 onto the screw rod, and the anti-skid layer 3 and the anti-sliding block 6-3 are simultaneously attached to the surface of the workpiece. After it is fully tightened, screw the clamping nut 5, and the clamping nut 5 moves downward on the surface of the outer threaded layer 4 and is pressed on the top of the anti-loosening column 6-2, so that the anti-sliding block 6-3 is further attached to the surface of the workpiece. Then, according to the position of the thread groove 7-8, when the position of the connecting rod 7-2 and the thread groove 7-8 cannot be vertical, the connecting rod 7-2 can be swung left and right and telescoped through the sleeve 7-5 and the extension rod 7-4, and the fixing screw 7-9 is screwed through the mounting hole 7-7 and connected to the thread groove 7-8 until it is firm.

[0054] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A locking nut, characterized in that: include An outer nut (1) and an outer layer (2), wherein the outer layer (2) is arranged on the surface of the outer nut (1); An anti-slip layer (3), the anti-slip layer (3) being arranged at the bottom of the outer nut (1); An external thread layer (4) and a clamping nut (5), wherein the external thread layer (4) is provided on the outer surface of the external nut (1), and the clamping nut (5) is screwed and connected to the external thread layer (4); A pressing and anti-loosening component (6), wherein the pressing and anti-loosening component (6) is arranged on the outer nut (1); A locking component (7), wherein the locking component (7) is arranged between the outer layer (2) and the anti-slip layer (3); The clamping and anti-loosening component (6) comprises a plurality of circular holes (6-1), wherein the circular holes (6-1) are arranged around the surface of the anti-slip layer (3), and a plurality of anti-loosening columns (6-2) are movably sleeved and connected inside the outer layer (2).

2. The anti-loosening nut according to claim 1, characterized in that: An anti-loosening slide block (6-3) is provided at the bottom of the anti-loosening column (6-2), the anti-loosening slide block (6-3) is inserted into the circular hole (6-1), and a first spring (6-4) is sleeved and connected to the outside of the anti-loosening column (6-2).

3. The anti-loosening nut according to claim 1, characterized in that: The locking assembly (7) comprises a pair of connecting grooves (7-1), a connecting rod (7-2) being rotatably connected in the connecting grooves (7-1), a vertical rod (7-3) being arranged at one end of the connecting rod (7-2), an extension rod (7-4) being arranged at the bottom of the vertical rod (7-3), and a sleeve (7-5) being sleeved and connected to the outside of the extension rod (7-4).

4. A locking nut according to claim 3, characterized in that: A second spring (7-6) is connected between the sleeve (7-5) and the extension rod (7-4); a mounting hole (7-7) is provided on the surface of the sleeve (7-5); a plurality of thread grooves (7-8) are provided on the outer surface of the outer layer (2); a fixing screw (7-9) is inserted and connected in the mounting hole (7-7); and the fixing screw (7-9) is screwed and connected in the thread groove (7-8).

5. The anti-loosening nut according to claim 4, characterized in that: The cross section of the mounting hole (7-7) is a stepped structure.

6. The anti-loosening nut according to claim 3, characterized in that: The cross sections of the connecting groove (7-1) and one end of the connecting rod (7-2) are both T-shaped structures.

7. The anti-loosening nut according to claim 2, characterized in that: The bottom of the anti-slip block (6-3) is a frosted anti-slip structure surface.

8. The anti-loosening nut according to claim 1, characterized in that: The outer layer (2) and the outer surface of the clamping nut (5) are both polygonal structures.

9. The anti-loosening nut according to claim 3, characterized in that: The vertical rod (7-3), the extension rod (7-4) and the sleeve (7-5) are all made of metal structural materials that can generate movement and bending.

10. The anti-loosening nut according to claim 2, characterized in that: The diameter of the anti-sliding block (6-3) matches the inner diameter of the circular hole (6-1).

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