CN219975106U

CN219975106U - Self-tightening anti-loosening nut structure

Info

Publication number: CN219975106U
Application number: CN202321465591.0U
Authority: CN
Inventors: 龙贵莲; 李琼昭; 黄正龙
Original assignee: Ningbo Shenzhao Technology Co ltd
Current assignee: Ningbo Shenzhao Technology Co ltd
Priority date: 2023-06-09
Filing date: 2023-06-09
Publication date: 2023-11-07
Anticipated expiration: 2033-06-09

Abstract

The utility model discloses a self-tightening anti-loosening nut structure, which comprises a nut body, wherein a workpiece is arranged below the nut body, a slot is formed in the upper surface of the workpiece, a bolt is movably inserted into the slot, a gasket is sleeved on the outer side of the bolt, a self-tightening anti-loosening component is arranged on one side of the nut body, and the nut body is connected with the gasket through the self-tightening anti-loosening component.

Description

Self-tightening anti-loosening nut structure

Technical Field

The utility model relates to the technical field of nuts, in particular to a self-tightening anti-loosening nut structure.

Background

The nut is a part which is screwed with the bolt or the screw rod to play a role in fastening, and the bolt and the nut are the detachable fastening devices which are most widely applied, so that the production difficulty of the mechanical device can be greatly reduced, and the repairing efficiency of the mechanical device can be improved. The use scene of the bolt and nut fastening device has a plurality of working conditions of high-frequency vibration, and the common bolt and nut device can be loosened under the working conditions of high-frequency vibration, especially when being applied to a high-speed railway car body or an engine. Which causes great hidden trouble to production and construction.

The prior locknut structure adds a gasket between the nut and the equipment, thereby increasing the tightness of the nut, and the transverse vibration suffered by the nut during operation is far more than the shaft vibration, so that when the relative motion occurs between the screw thread of the nut and the supporting surface of the fastener, the screwed nut can be self-loosened, the gasket is invalid in action, the locknut with the structure has poor locknut effect, and therefore, the self-tightening locknut structure is provided.

Disclosure of Invention

The utility model aims to provide a self-tightening anti-loosening nut structure so as to solve the problems in the background art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the self-tightening anti-loosening nut structure comprises a nut body, wherein a workpiece is arranged below the nut body, a slot is formed in the upper surface of the workpiece, a bolt is movably inserted into the slot, a gasket is sleeved on the outer side of the bolt, a self-tightening anti-loosening component is arranged on one side of the nut body, the nut body is connected with the gasket through the self-tightening anti-loosening component, a threaded hole is formed in the nut body, and the nut body is sleeved on the outer side of the bolt through the threaded hole;

the self-tightening anti-loosening assembly comprises a movable ring, the movable ring is movably sleeved on the outer side of the bolt, a compression ring is arranged below the movable ring, a conical surface area is arranged on the upper surface of the gasket, the lower surface of the compression ring is attached to the conical surface area, four connecting rods are fixedly connected with the upper surface of the compression ring, one end of each connecting rod, which is far away from the compression ring, is fixedly connected with the bottom of the movable ring, a connecting assembly is arranged at the top of the movable ring, and the movable ring is connected with the bottom of the nut body through the connecting assembly.

Preferably, the connecting assembly comprises four arc-shaped clamping blocks, the four arc-shaped clamping blocks are uniformly distributed on the upper surface of the moving coil, four arc-shaped clamping grooves matched with the arc-shaped clamping blocks are formed in the lower surface of the nut body, and the arc-shaped clamping blocks are movably inserted into the arc-shaped clamping grooves.

Preferably, a first taper groove is formed in a lower region of the arc-shaped clamping groove.

Preferably, the sleeve is fixedly connected with the lower part of the nut body, the conical block is fixedly connected with the bottom of the sleeve, the second conical groove matched with the conical block is formed in the gasket, and the through groove matched with the bolt is formed in the bottom of the conical block.

Preferably, the tapered block is inserted into the second tapered groove, the outer side of the tapered block is attached to the inner side wall of the second tapered groove, and a plurality of anti-slip protrusions are fixedly connected to the inner side wall of the second tapered groove.

Preferably, the bottom end of the bolt penetrates through the threaded hole, the sleeve and the second tapered groove in sequence and then is inserted into the slot, and the lower surface of the washer is attached to the upper surface of the workpiece.

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

when the nut is used, the bolt is inserted into the slot of the workpiece, the gasket and the moving ring are sleeved on the outer side of the bolt in sequence, the nut body is sleeved on the outer side of the bolt, the moving ring is connected with the nut body through the connecting component, the nut body is screwed to drive the moving ring to stably move downwards, the connecting rod drives the compression ring to move downwards, the lower surface of the compression ring is attached to the conical surface area of the gasket, the edge area of the gasket is self-tightened, the nut body locks the bolt through the gasket, and simultaneously, the edge of the gasket is clamped, so that the gasket is prevented from vibrating to rotate, and the nut body is prevented from loosening.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic cross-sectional view of a gasket according to the present utility model;

FIG. 3 is an enlarged schematic view of the area A of FIG. 2;

FIG. 4 is an enlarged schematic view of the area B of FIG. 2;

FIG. 5 is a schematic view of an exploded construction of a gasket of the present utility model;

FIG. 6 is a schematic view of a cross-sectional exploded view of a nut body of the present utility model;

fig. 7 is a schematic view of an exploded view of another view of the gasket of the present utility model.

In the figure: 1. a nut body; 2. a workpiece; 3. a slot; 4. a bolt; 5. a gasket; 6. a self-tightening anti-loosening component; 61. a moving coil; 62. a connecting rod; 63. a clamp ring; 64. a conical surface region; 7. a connection assembly; 71. an arc-shaped clamping block; 72. an arc-shaped clamping groove; 73. a first tapered groove; 8. a conical block; 9. a through groove; 10. a second tapered slot; 11. a slip preventing protrusion; 12. a threaded hole; 13. a sleeve.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. 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 be within the scope of the utility model.

Example 1

Referring to fig. 1-7, the present utility model provides a technical solution: the utility model provides a self-tightening locking nut structure, includes nut body 1, and the below of nut body 1 is equipped with work piece 2, and slot 3 has been seted up to work piece 2's upper surface, and slot 3's inside activity has inserted bolt 4, and the packing ring 5 has been cup jointed in the outside of bolt 4, and one side of nut body 1 is equipped with self-tightening locking subassembly 6, and nut body 1 is connected with packing ring 5 through self-tightening locking subassembly 6, and nut body 1's inside is equipped with screw hole 12, and nut body 1 cup joints in the outside of bolt 4 through screw hole 12. The bottom end of the bolt 4 sequentially penetrates through the threaded hole 12, the sleeve 13 and the second conical groove 10 and then is inserted into the slot 3, and the lower surface of the gasket 5 is attached to the upper surface of the workpiece 2.

The self-tightening anti-loosening assembly 6 comprises a movable ring 61, the movable ring 61 is movably sleeved on the outer side of a bolt 4, a compression ring 63 is arranged below the movable ring 61, a conical surface area 64 is arranged on the upper surface of a gasket 5, the lower surface of the compression ring 63 is attached to the conical surface area 64, four connecting rods 62 are fixedly connected to the upper surface of the compression ring 63, one end of each connecting rod 62, which is far away from the compression ring 63, is fixedly connected to the bottom of the movable ring 61, the top of the movable ring 61 is provided with a connecting assembly 7, the movable ring 61 is connected with the bottom of the nut body 1 through the connecting assembly 7, the connecting assembly 7 comprises four arc clamping blocks 71, the four arc clamping blocks 71 are uniformly distributed on the upper surface of the movable ring 61, four arc clamping grooves 72 matched with the arc clamping blocks 71 are formed in the lower surface of the nut body 1, the arc clamping blocks 71 are movably inserted into the inner parts of the arc clamping grooves 72, so that the movable ring 61 and the nut body 1 are connected, and when the nut body 1 moves downwards, the movable ring 61 is driven to stably screw down to move, the movable ring 61 is prevented from shaking, the movable ring 61 is stressed, the lower area is not stable, the lower area of the arc clamping blocks is provided with a first cone 73, and the first cone 73 is designed to be inserted into the arc clamping grooves 72.

When the nut is used, the bolt 4 is inserted into the slot 3 of the workpiece 2, the gasket 5 and the moving ring 61 are sequentially sleeved on the outer side of the bolt 4, the nut body 1 is sleeved on the outer side of the bolt 4, the arc-shaped clamping block 71 at the top of the moving ring 61 is inserted into the arc-shaped clamping groove 72 at the bottom of the nut body 1, the nut body 1 is screwed, the nut body 1 drives the moving ring 61 to stably move downwards, the connecting rod 62 drives the clamp ring 63 to move downwards, the lower surface of the clamp ring 63 is attached to the conical surface area 64 of the gasket 5, and the edge area of the gasket 5 is self-tightened, so that the nut body 1 is prevented from loosening.

Example two

Wherein the same or corresponding parts as those in embodiment 1 are denoted by the corresponding reference numerals as in embodiment 1,

for simplicity, only the points of distinction from example 1 are described below.

This embodiment 2 is different from embodiment 1 in that:

the below fixedly connected with sleeve 13 of nut body 1, the bottom fixedly connected with toper piece 8 of sleeve 13, the second conical groove 10 with toper piece 8 looks adaptation has been seted up to the inside of packing ring 5, logical groove 9 with bolt 4 looks adaptation has been seted up to the bottom of toper piece 8, when nut body 1 moves down along bolt 4, drive toper piece 8 through sleeve 13 and move down, insert in the inside of second conical groove 10, thereby the friction between nut body 1 and packing ring 5 has been increased, toper piece 8 inserts in the inside of second conical groove 10, the outside of toper piece 8 is laminated with the inside wall of second conical groove 10, the inside wall fixedly connected with a plurality of non-slip protrusions 11 of second conical groove 10, the friction between second conical groove 10 and the toper piece 8 outside has been increased to non-slip protrusions 11.

When the nut is in use, the nut body 1 is rotated, the sleeve is screwed on the outer side of the bolt 4, the nut body 1 drives the conical block 8 to move downwards through the sleeve 13 and is inserted into the second conical groove 10, so that friction between the nut body 1 and the gasket 5 is increased, friction between the second conical groove 10 and the conical block 8 is increased by the anti-slip protrusions 11, and friction between the nut body 1 and the gasket 5 is increased.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a self-tightening formula locknut structure, includes nut body (1), its characterized in that: the nut comprises a nut body (1), and is characterized in that a workpiece (2) is arranged below the nut body (1), a slot (3) is formed in the upper surface of the workpiece (2), a bolt (4) is movably inserted into the slot (3), a gasket (5) is sleeved on the outer side of the bolt (4), a self-tightening anti-loosening component (6) is arranged on one side of the nut body (1), the nut body (1) is connected with the gasket (5) through the self-tightening anti-loosening component (6), a threaded hole (12) is formed in the nut body (1), and the nut body (1) is sleeved on the outer side of the bolt (4) through the threaded hole (12);

the self-tightening anti-loosening assembly (6) comprises a movable ring (61), the movable ring (61) is movably sleeved on the outer side of the bolt (4), a clamping ring (63) is arranged below the movable ring (61), a conical surface area (64) is arranged on the upper surface of the gasket (5), the lower surface of the clamping ring (63) is attached to the conical surface area (64), four connecting rods (62) are fixedly connected to the upper surface of the clamping ring (63), one end of each connecting rod (62) is fixedly connected to the bottom of the movable ring (61), a connecting assembly (7) is arranged at the top of the movable ring (61), and the movable ring (61) is connected with the bottom of the nut body (1) through the connecting assembly (7).

2. The self-tightening locknut structure as defined in claim 1, wherein: the connecting assembly (7) comprises four arc clamping blocks (71), the four arc clamping blocks (71) are uniformly distributed on the upper surface of the moving ring (61), four arc clamping grooves (72) matched with the arc clamping blocks (71) are formed in the lower surface of the nut body (1), and the arc clamping blocks (71) are movably inserted into the arc clamping grooves (72).

3. The self-tightening locknut structure as defined in claim 2, wherein: a first conical groove (73) is formed in the lower area of the arc-shaped clamping groove (72).

4. The self-tightening locknut structure as defined in claim 1, wherein: the nut is characterized in that a sleeve (13) is fixedly connected to the lower portion of the nut body (1), a conical block (8) is fixedly connected to the bottom of the sleeve (13), a second conical groove (10) matched with the conical block (8) is formed in the gasket (5), and a through groove (9) matched with the bolt (4) is formed in the bottom of the conical block (8).

5. The self-tightening locknut structure as defined in claim 4, wherein: the conical block (8) is inserted into the second conical groove (10), the outer side of the conical block (8) is attached to the inner side wall of the second conical groove (10), and a plurality of anti-slip protrusions (11) are fixedly connected to the inner side wall of the second conical groove (10).

6. The self-tightening locknut structure as defined in claim 4, wherein: the bottom of the bolt (4) sequentially penetrates through the threaded hole (12), the sleeve (13) and the second conical groove (10) and then is inserted into the slot (3), and the lower surface of the gasket (5) is attached to the upper surface of the workpiece (2).