CN216691794U

CN216691794U - Anti-loose self-locking hexagon nut

Info

Publication number: CN216691794U
Application number: CN202122679899.2U
Authority: CN
Inventors: 王晓岳
Original assignee: Haiyan Yasheng Hardware Products Co ltd
Current assignee: Haiyan Yasheng Hardware Products Co ltd
Priority date: 2021-11-04
Filing date: 2021-11-04
Publication date: 2022-06-07
Anticipated expiration: 2031-11-04

Abstract

The utility model discloses an anti-loose self-locking hexagon nut, which relates to the technical field of self-locking nuts and comprises a hexagon nut, wherein a fixed backing ring is fixedly connected to the lower end face of the hexagon nut, a limiting groove is annularly formed in the middle of the inner side wall of the fixed backing ring, a self-locking assembly is arranged in an inner cavity of the limiting groove and comprises a plurality of locking blocks which are annularly distributed in an array mode, the inner side wall of each locking block is arc-shaped, and the arc is concentric with a circle where an internal thread of the hexagon nut is located. According to the utility model, the self-locking assembly is arranged in the inner cavity of the limiting groove, the self-locking assembly comprises a plurality of locking blocks distributed in an annular array, and one side surface of the pressing block is attached to one side surface of the locking block, so that when the hexagonal nut is reversely unscrewed, one side surface of the pressing block extrudes one side surface of the locking block to enable the locking blocks to be gathered together, thus the friction force between the self-locking assembly and the bolt is increased, and further the self-locking effect is achieved.

Description

Anti-loose self-locking hexagon nut

Technical Field

The utility model relates to the technical field of self-locking nuts, in particular to an anti-loose self-locking hexagonal nut.

Background

The self-locking nut is a nut capable of self-locking by friction force. The general nut can be loosened by itself due to vibration and other reasons in the using process, and in order to prevent the phenomenon, the self-locking nut is invented. The self-locking nut has the functions of anti-loosening and anti-vibration. Used in special occasions. The working principle is generally self-locking by friction force. The self-locking nut is classified according to functions and comprises a nylon ring embedded, a neck-closing device and a metal anti-loosening device. They all belong to the effective torque type locknuts.

However, at present, the self-locking capacity of the existing nut is poor, and when the existing nut is used for a long time and is vibrated, the nut is easy to loosen, so that the connection strength is influenced. Therefore, it is necessary to invent a locking self-locking hexagon nut to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an anti-loose self-locking hexagonal nut to solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: locking auto-lock hexagon nut, including hexagon nut, hexagon nut's lower terminal surface fixedly connected with fixed backing ring, the spacing groove has been seted up to fixed backing ring's inside wall middle part annular, the inner chamber of spacing groove is provided with the auto-lock subassembly, the auto-lock subassembly includes a plurality of latch segments that are the annular array and distribute, the inside wall of latch segment sets up to arc and this arc concentric with hexagon nut's internal thread place circle, the inside wall of latch segment is provided with the internal thread the same with hexagon nut, a plurality of clamp blocks that are the annular array and distribute of the inside wall fixedly connected with of spacing groove, it is a plurality of clamp block and a plurality of latch segments are interval distribution, a side of clamp block and a side of latch block all slope the setting, and a side of clamp block and a side laminating of clamp block.

Preferably, a rubber block is arranged between every two adjacent locking blocks, and two end faces of the rubber block are fixedly connected with the two adjacent locking blocks respectively.

Preferably, the inner diameter of the fixing backing ring is larger than the inner diameter of an inner thread of the hexagon nut, and the thickness of the self-locking assembly is smaller than the width of the limiting groove.

Preferably, the other side of compact heap and the other side of latch segment all follow the radial direction of spacing groove, and the laminating of the other side of compact heap and the other side of latch segment.

The utility model has the technical effects and advantages that:

1. according to the utility model, the middle part of the inner side wall of the fixed backing ring is annularly provided with the limiting groove, the inner cavity of the limiting groove is provided with the self-locking assembly, the self-locking assembly comprises a plurality of locking blocks which are distributed in an annular array manner, one side surface of each locking block is obliquely arranged, the inner side wall of the limiting groove is fixedly connected with a plurality of pressing blocks, one side surface of each pressing block is obliquely arranged, and one side surface of each pressing block is attached to one side surface of each locking block, so that when the hexagonal nut is reversely unscrewed, one side surface of each pressing block extrudes one side surface of each locking block to enable the plurality of locking blocks to be gathered together, thus the friction force between the self-locking assembly and the bolt is increased, and further the self-locking effect is achieved;

2. according to the utility model, the thickness of the self-locking assembly is smaller than the width of the limiting groove, when the hexagon nut is reversely unscrewed, the hexagon nut and the self-locking assembly can relatively move, at the moment, the internal thread of the locking block and the internal thread of the hexagon nut can be staggered, and further, the friction between the internal thread of the hexagon nut and the internal thread of the locking block and the external thread of the bolt is increased, so that the self-locking capability of the device is further improved, and the anti-loosening effect is further achieved.

Drawings

Fig. 1 is a perspective view of the overall structure of the present invention.

Fig. 2 is an exploded view of the overall structure of the present invention.

Fig. 3 is a schematic perspective view of the structure of the compact of the present invention.

Fig. 4 is a perspective view of the self-locking assembly of the present invention.

Fig. 5 is a schematic perspective view of a fixing grommet according to the present invention.

FIG. 6 is a schematic top-down view of the retaining ring pad of the present invention.

Fig. 7 is a schematic diagram of the position change of the self-locking assembly structure of the present invention.

In the figure: 1. a hexagonal nut; 2. a fixed backing ring; 3. a limiting groove; 4. a self-locking assembly; 5. a locking block; 6. a rubber block; 7. and (5) a compression block.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

The utility model provides an anti-loose self-locking hexagon nut shown in figures 1-7, which comprises a hexagon nut 1, wherein the lower end surface of the hexagon nut 1 is fixedly connected with a fixed backing ring 2, and the inner diameter of the fixed backing ring 2 is larger than the inner diameter of an inner thread of the hexagon nut 1, so that when the hexagon nut 1 is screwed outside a bolt matched with the hexagon nut 1, the fixed backing ring 2 cannot obstruct the screwing of the hexagon nut 1, and the middle part of the inner side wall of the fixed backing ring 2 is annularly provided with a limiting groove 3.

Secondly, a self-locking assembly 4 is arranged in the inner cavity of the limiting groove 3, the thickness of the self-locking assembly 4 is smaller than the width of the limiting groove 3, and the self-locking assembly 4 can move up and down in the inner cavity of the limiting groove 3 for a certain distance as shown in fig. 7.

Specific, auto-lock subassembly 4 includes a plurality of latch segments 5 that are the annular array and distribute, latch segments 5's inside wall sets up to arc and this arc concentric with hexagon nut 1's internal thread place circle, latch segments 5's inside wall is provided with the internal thread the same with hexagon nut 1, when auto-lock subassembly 4 wholly is located the inner chamber upper end of spacing groove 3, latch segments 5's internal thread forms a complete internal thread with hexagon nut 1's internal thread, be provided with block rubber 6 between two adjacent latch segments 5, and block rubber 6's both ends face respectively with two adjacent block rubber 6 fixed connection, miniature elastic deformation can take place for block rubber 6, block rubber 6's setting is used for connecting two adjacent latch segments 5, make a plurality of latch segments 5 can keep the circularity, and ensure to gather together each other between a plurality of latch segments 5.

Furthermore, a plurality of compression blocks 7 distributed in an annular array are fixedly connected to the inner side wall of the limiting groove 3, the compression blocks 7 and the locking blocks 5 are distributed at intervals, one side face of each compression block 7 and one side face of each locking block 5 are obliquely arranged, one side face of each compression block 7 is attached to one side face of each locking block 5, the other side face of each compression block 7 and the other side face of each locking block 5 are along the radial direction of the limiting groove 3, and the other side face of each compression block 7 is attached to the other side face of each locking block 5, so that when the hexagonal nut 1 is screwed forward and drives the compression blocks 7 to rotate synchronously, the other side face of each compression block 7 extrudes the other side face of each locking block 5, the self-locking assembly 4 can be driven to rotate synchronously with the hexagonal nut 1, and the hexagonal nut 1 can be further ensured to smoothly screw the bolt; when the hexagon nut 1 is reversely unscrewed, one side face of the pressing block 7 extrudes one side face of the locking block 5, so that the locking blocks 5 are gathered together, the friction force between the self-locking assembly 4 and the bolt is increased, the self-locking assembly 4 cannot rotate along with the reverse screwing of the hexagon nut 1, meanwhile, the self-locking assembly 4 is positioned in the inner cavity of the limiting groove 3, the movement of the self-locking assembly 4 along the axial direction of the bolt can be limited, and the separation from the bolt due to the looseness of the hexagon nut 1 is effectively avoided; and, when hexagonal nut 1 is reverse unscrewed, but when auto-lock subassembly 4 can't rotate thereupon, as shown in fig. 7, auto-lock subassembly 4 can move down relatively at the inner chamber of spacing groove 3, and the internal thread of latch segment 5 and hexagonal nut 1's internal thread can take place the dislocation this moment to make the internal thread of hexagonal nut 1 and the internal thread of latch segment 5 all with the increase of the frictional force between the bolt external screw thread, and then can further improve this device's self-locking ability, thereby reach locking effect.

The working principle of the utility model is as follows:

when the device is used, the device is sleeved on the outer side of a bolt, at the moment, the internal thread of the locking block 5 is firstly contacted with the external thread of the bolt, the upper end surface of the self-locking assembly 4 is attached to the inner wall of the upper end of the limiting groove 3 by applying pressure downwards, at the moment, the internal thread of the locking block 5 and the internal thread of the hexagon nut 1 form a complete internal thread, then the hexagon nut 1 is screwed forwards, at the moment, the other side surface of the pressing block 7 extrudes the other side surface of the locking block 5 to drive the self-locking assembly 4 and the hexagon nut 1 to synchronously rotate forwards, and the device can be screwed on the outer side of the bolt;

when hexagonal nut 1 is reversely unscrewed, a side of clamp block 5 is extruded to a side of clamp block 7, make a plurality of clamp blocks 5 gather together each other, and can increase the frictional force between auto-lock subassembly 4 and the bolt, therefore during hexagonal nut 1 is reversely rotated, but auto-lock subassembly 4 can not rotate thereupon, but keep the state to the bolt tightening, thereby can effectively reach the effect of auto-lock, and, hexagonal nut 1 is when reversely unscrewing, auto-lock subassembly 4 can move down relatively at spacing groove 3's inner chamber, the internal thread of clamp block 5 staggers with hexagonal nut 1's internal thread this moment, can't form a complete internal thread, thereby can make the internal thread of hexagonal nut 1 and the internal thread of clamp block 5 all with the increase of frictional force between the bolt external screw thread, and then can further improve the auto-lock ability of this device, thereby reach locking effect.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the utility model.

Claims

1. Locking auto-lock hexagon nut, including hexagon nut (1), its characterized in that: the lower end face of the hexagonal nut (1) is fixedly connected with a fixed backing ring (2), the middle part of the inner side wall of the fixed backing ring (2) is annularly provided with a limiting groove (3), the inner cavity of the limiting groove (3) is provided with a self-locking assembly (4), the self-locking assembly (4) comprises a plurality of locking blocks (5) distributed in an annular array manner, the inner side wall of each locking block (5) is arc-shaped and concentric with the circle where the inner thread of the hexagonal nut (1) is located, the inner side wall of each locking block (5) is provided with the inner thread same as that of the hexagonal nut (1), the inner side wall of the limiting groove (3) is fixedly connected with a plurality of pressing blocks (7) distributed in an annular array manner, the plurality of pressing blocks (7) and the plurality of locking blocks (5) are distributed at intervals, and one side face of each pressing block (7) and one side face of each locking block (5) are obliquely arranged, and one side surface of the pressing block (7) is attached to one side surface of the locking block (5).

2. The anti-loose self-locking hexagonal nut according to claim 1, wherein: and a rubber block (6) is arranged between every two adjacent locking blocks (5), and two end faces of the rubber block (6) are respectively and fixedly connected with the two adjacent locking blocks (5).

3. The anti-loose self-locking hexagonal nut according to claim 2, wherein: the inner diameter of the fixing backing ring (2) is larger than the inner diameter of the inner thread of the hexagonal nut (1), and the thickness of the self-locking assembly (4) is smaller than the width of the limiting groove (3).

4. The anti-loose self-locking hexagonal nut according to claim 3, wherein: the other side of compact heap (7) and the other side of latch segment (5) all follow the radial direction of spacing groove (3), and the another side of compact heap (7) and the another side laminating of latch segment (5).