Anti-loosening nut

Abstract

The utility model relates to the field of fasteners, in particular to an anti-loosening nut which is characterized in that a plurality of locking seats are arranged on the upper portion of the nut, the outer walls of the locking seats incline outwards gradually from bottom to top, movable grooves are formed in the middles of the locking seats, extrusion blocks are installed in the movable grooves through connecting blocks, and nylon pads are arranged on the inner walls of the extrusion blocks. The outer wall of the extrusion block slightly protrudes out of the outer wall of the locking seat. In the utility model, the flange gasket mechanism is arranged at the bottom of the nut to increase the contact area with the mounting surface so as to increase the friction force, and meanwhile, the auxiliary nut is mounted at the upper part of the nut through the locking seat to realize a double-nut mechanism, and the locking seat can be driven to embrace and lock inwards by rotating the auxiliary nut and is matched with the extrusion block to realize a multi-locking mechanism; therefore, the anti-loosening effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of fastener technology, and in particular to an anti-loosening nut. Background Technology

[0002] Nuts are the most commonly used fasteners and are often used in conjunction with bolts (screws).

[0003] Traditional nuts only provide a single threaded connection. However, due to different usage and installation environments, traditional nuts can loosen due to external factors such as mechanical vibration and temperature changes, affecting the tightening effect. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing an anti-loosening nut.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An anti-loosening nut includes a nut, the upper part of which is provided with multiple locking seats. The outer wall of the locking seat gradually slopes outward from bottom to top. A movable groove is opened in the middle of the locking seat. A pressing block is installed in the movable groove through a connecting block. A rubber block is provided on the inner wall of the pressing block. The outer wall of the pressing block slightly protrudes from the outer wall of the locking seat.

[0007] A secondary nut is screwed onto the locking seat, and an extension seat is provided at the bottom of the secondary nut. Multiple wedge-shaped blocks are provided on the outer side of the extension seat.

[0008] A connecting seat is provided on the bottom outer side away from the locking seat. Multiple baffles are installed obliquely on the inner wall of the connecting seat. The baffles are connected to the connecting seat by an arc-shaped rubber block. In the natural state, the extension seat provided at the bottom of the secondary nut is fitted between the locking seat and the connecting seat, and the baffle is limited and locked in the gap between the adjacent wedge blocks.

[0009] In addition, a preferred structure is that both the inner and outer walls of the locking seat are provided with threaded grooves.

[0010] Furthermore, in a preferred configuration, the threads on the outer wall of the locking seat are in the opposite direction to the threads on the inner wall of the nut.

[0011] In addition, a preferred structure is that the bottom of the nut is provided with a flange gasket, the bottom wall of the flange gasket is provided with a plurality of wedge blocks, the tip direction of the wedge blocks is opposite to the tightening rotation direction of the nut, and a plurality of rubber rings are installed on the bottom wall of the flange gasket, the bottom end of the rubber rings protruding from the bottom end of the wedge blocks.

[0012] In addition, a preferred structure is that the locking seat has a movable groove in the middle, and the inner wall of the movable groove has mounting grooves on both sides. A connecting block is snapped into the mounting groove, and the connecting block is installed on both sides of the pressing block. The pressing block is fitted into the inside of the movable groove.

[0013] Furthermore, in a preferred configuration, the threads on the inner wall of each locking seat are continuously connected to the threads on the inner wall of the nut.

[0014] The beneficial effects of this utility model are as follows:

[0015] In this invention, a flange gasket mechanism is provided at the bottom of the nut to increase the contact area with the mounting surface and thus increase the friction. At the same time, a secondary nut is installed on the upper part of the nut through a locking seat to realize a double nut mechanism. By rotating the secondary nut, the locking seat can be driven to tighten inward and lock, and in conjunction with the compression block, a multiple locking mechanism is realized to improve the anti-loosening effect. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the external structure of an anti-loosening nut proposed in this utility model. Figure 1 ;

[0017] Figure 2 This is a schematic diagram of the external structure of an anti-loosening nut proposed in this utility model. Figure 2 ;

[0018] Figure 3 This is a schematic diagram of the auxiliary nut and nut connection structure proposed in this utility model;

[0019] Figure 4 This is a sectional view of the auxiliary nut mounting structure proposed in this utility model;

[0020] Figure 5 This is a schematic diagram of the extension seat structure proposed in this utility model;

[0021] Figure 6 This is a schematic diagram of the internal structure of the connector proposed in this utility model;

[0022] Figure 7 This is a schematic diagram of the extrusion block installation structure proposed in this utility model.

[0023] In the diagram: 1. Nut; 2. Flange gasket; 21. Wedge block one; 22. Rubber ring; 3. Secondary nut; 31. Extension seat; 311. Wedge block two; 4. Locking seat; 41. Extrusion block; 411. Rubber block one; 412. Connecting block; 42. Movable groove; 43. Mounting groove; 5. Connecting seat; 51. Arc-shaped rubber block; 52. Baffle plate. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] Reference Figure 1-7 An anti-loosening nut includes a nut 1, with multiple locking seats 4 on the upper part of the nut 1. The outer wall of the locking seat 4 gradually slopes outward from bottom to top, and the inner wall of the locking seat 4 is vertical and threadedly connected to the inner wall of the nut 1.

[0026] The locking seat 4 has a movable groove 42 in the middle. A pressing block 41 is installed in the movable groove 42 through a connecting block 412. The inner wall of the pressing block 41 is provided with a rubber block 411. The outer wall of the pressing block 41 protrudes slightly from the outer wall of the locking seat 4.

[0027] A secondary nut 3 is screwed onto the locking seat 4. An extension seat 31 is provided at the bottom of the secondary nut 3. Multiple wedge-shaped blocks 311 are provided on the outer side of the extension seat 31. The extension seat 31 is fitted into the connecting seat 5 and the locking seat 4 in its natural state.

[0028] A connecting seat 5 is provided on the outer bottom of the locking seat 4 away from the locking seat 4. Multiple baffles 52 are installed obliquely on the inner wall of the connecting seat 5. The baffles 52 are connected to the connecting seat 5 by an arc-shaped rubber block 51. In the natural state, the extension seat 31 provided at the bottom of the secondary nut 3 is fitted between the locking seat 4 and the connecting seat 5, and the baffles 52 are limited and locked in the gap between the adjacent wedge blocks 311.

[0029] The inner and outer walls of the locking seat 4 are both provided with threaded grooves;

[0030] The inner wall thread is used to connect fasteners, and the inner wall thread is continuously connected with the inner wall thread of nut 1;

[0031] The outer wall thread is used to connect the auxiliary nut 3. The helical direction of the outer wall thread is opposite to that of the inner wall thread of nut 1. If nut 1 is tightened clockwise, then auxiliary nut 3 is tightened counterclockwise.

[0032] The bottom of the nut 1 is provided with a flange gasket 2, and the bottom wall of the flange gasket 2 is provided with a plurality of wedge blocks 21. The tip direction of the wedge blocks 21 is opposite to the tightening rotation direction of the nut 1, thereby increasing the friction between the wedge blocks 21 and the mounting contact surface.

[0033] Multiple rubber rings 22 are installed on the bottom wall of the flange gasket 2. The bottom end of the rubber ring 22 protrudes from the bottom end of the wedge block 21. The rubber ring 22 is squeezed and deformed when in contact with the mounting surface, and provides friction through the rubber material.

[0034] The locking seat 4 has a movable groove 42 in the middle. The inner walls of the movable groove 42 have mounting grooves 43 on both sides. A connecting block 412 is snapped into the mounting groove 43. The connecting block 412 is installed on both sides of the pressing block 41. The pressing block 41 is fitted into the interior of the movable groove 42.

[0035] In this embodiment, the nut 1 is installed on the corresponding fastener. As the nut 1 continues to rotate and tighten, the flange gasket 2 comes into contact with the mounting surface, and the rubber ring 22 is compressed and deformed, increasing the contact friction with the mounting surface.

[0036] At the same time, the wedge-shaped block 21 contacts the mounting surface, and the serrated structure formed by the wedge-shaped block 21 can effectively improve the friction to avoid loosening.

[0037] At the same time, by tightening the secondary nut 3, the secondary nut 3 rotates upward on the outer wall of the locking seat 4 through the thread. As the secondary nut 3 moves upward, the inner wall of the secondary nut 3 contacts the outer wall of the locking seat 4. Since the outer wall of the locking seat 4 is outwardly inclined, the secondary nut 3 will have an inward tightening effect on each locking seat 4, resulting in a tighter threaded connection and engagement between the locking seat 4 and the fastener.

[0038] At the same time, when the secondary nut 3 moves to the middle of the locking seat 4, the inner wall of the secondary nut 3 comes into contact with the outer wall of the compression block 41. The compression block 41 is displaced by the compression force and moves inward, so that the rubber block 411 set on the inner wall of the compression block 41 makes a tighter contact with the fastener thread to improve friction and prevent loosening.

[0039] When the extrusion block 41 is subjected to force, mechanical deformation occurs at the connection between the extrusion block 41 and the connecting block 412, causing the extrusion block 41 to produce a certain amount of deformation.

[0040] During the rotation of the secondary nut 3, the extension seat 31 at its bottom rotates synchronously. The extension seat 31 rotates between the locking seat 4 and the connecting seat 5. The inner wall of the extension seat 31 is not threaded.

[0041] When the secondary nut 3 is tightened by rotation, the baffle 52 inside the connecting seat 5 will contact the inclined surface of the wedge block 311 on the outer wall of the extension seat 31, allowing the secondary nut 3 to rotate.

[0042] Conversely, when the secondary nut 3 rotates in the opposite direction, the vertical surface of the wedge block 311 presses against the baffle 52 to achieve a one-way locking function.

[0043] When the baffle 52 and the wedge block 311 are pressed into contact, the arc-shaped rubber block 51 deforms to allow the baffle 52 to deflect.

[0044] The flange gasket 2 at the bottom of the nut 1 provides initial locking and anti-loosening functions to the contact surface. The upper part of the nut 1 is provided with a secondary nut 3 to realize a double nut mechanism. The rotation and tightening directions of the nut 1 and the secondary nut 3 are opposite, and the secondary nut 3 drives multiple locking seats 4 to move towards the middle of the nut 1 during rotation to improve the tightness of the connection.

[0045] Rubber ring 22, rubber block 411, and arc-shaped rubber block 51 are made of nylon.

[0046] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An anti-loosening nut, comprising a nut (1), characterized in that, The upper part of the nut (1) is provided with multiple locking seats (4). The outer wall of the locking seat (4) gradually slopes outward from bottom to top. The middle part of the locking seat (4) is provided with a movable groove (42). A pressing block (41) is installed in the movable groove (42) through a connecting block (412). The inner wall of the pressing block (41) is provided with a rubber block (411). The outer wall of the pressing block (41) slightly protrudes from the outer wall of the locking seat (4). The locking seat (4) is screwed with a secondary nut (3), and an extension seat (31) is provided at the bottom of the secondary nut (3). Multiple wedge blocks (311) are provided on the outer side of the extension seat (31). A connecting seat (5) is provided on the outer bottom of the locking seat (4) away from the locking seat (4). Multiple baffles (52) are installed obliquely on the inner wall of the connecting seat (5). The baffles (52) and the connecting seat (5) are connected by an arc-shaped rubber block (51). In the natural state, the extension seat (31) provided at the bottom of the secondary nut (3) is fitted between the locking seat (4) and the connecting seat (5), and the baffles (52) are limited and locked in the gap between the adjacent wedge blocks (311).

2. The anti-loosening nut according to claim 1, characterized in that, The locking seat (4) has threaded grooves on both its inner and outer walls.

3. The anti-loosening nut according to claim 1, characterized in that, The thread on the outer wall of the locking seat (4) is opposite in direction to the thread on the inner wall of the nut (1).

4. The anti-loosening nut according to claim 1, characterized in that, The bottom of the nut (1) is provided with a flange gasket (2), and the bottom wall of the flange gasket (2) is provided with a plurality of wedge blocks (21). The tip direction of the wedge blocks (21) is opposite to the tightening rotation direction of the nut (1), and the bottom wall of the flange gasket (2) is provided with a plurality of rubber rings (22). The bottom end of the rubber rings (22) protrudes from the bottom end of the wedge blocks (21).

5. The anti-loosening nut according to claim 1, characterized in that, The locking seat (4) has a movable groove (42) in the middle. The inner walls of the movable groove (42) are provided with mounting grooves (43) on both sides. A connecting block (412) is snapped into the mounting groove (43). The connecting block (412) is installed on both sides of the pressing block (41). The pressing block (41) is fitted into the interior of the movable groove (42).

6. The anti-loosening nut according to claim 2, characterized in that, The threads on the inner wall of each locking seat (4) are continuously connected to the threads on the inner wall of the nut (1).

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