Improved locking nut

Abstract

The utility model discloses an improved locking nut which comprises a bolt body and a nut body in threaded connection with the surface of the bolt body, a movable extrusion block is arranged below the nut body and located on the surface of the bolt body, and the improved locking nut further comprises a fixing groove. The two fixing grooves are formed in the left side and the right side of the bottom of the nut body correspondingly, fixing blocks are installed on the inner walls of the fixing grooves, the tops of the fixing blocks are fixedly connected with the tops of the inner walls of the fixing grooves through fixing rods, and moving blocks are slidably connected to the surfaces of the fixing rods. The surface of the fixing rod is sleeved with a buffer spring. Through the mutual cooperation of the extrusion block, the fixing groove, the fixing block, the fixing rod, the moving block, the buffer spring, the adjusting block, the mounting plate, the annular plate, the rotating block and the annular groove, the locking effect of the nut is improved, the phenomenon that the nut is prone to loosening is reduced, the stability of the nut in use is improved, and the practicability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of nuts, and particularly relates to an improved locking nut. Background Technique

[0002] A bolt is a mechanical part, a cylindrical threaded fastener used in conjunction with a nut. A type of fastener consisting of two parts, a head and a screw rod (a cylinder with external threads), which needs to cooperate with a nut to be used for fastening and connecting two parts with through holes.

[0003] According to the application number: CN201220209156.7, a locking nut includes a nut body. Among them, a plurality of anti-loosening and anti-withdrawal protrusions are provided on the end surface of the nut body for fitting with the connected part, and the anti-loosening and anti-withdrawal protrusions can be conical or frustum-shaped or pyramid-shaped or frustum-shaped. The advantages of the locking nut of the utility model are as follows: Since a plurality of anti-loosening and anti-withdrawal protrusions are provided on the end surface of the nut body for fitting with the connected part, when the locking nut of the utility model is tightened, that is, when the locking nut is in close contact with the surface of the connected part, the frictional force between the locking nut of the utility model and the surface of the connected part will increase, so as to achieve the purpose of preventing the locking nut of the utility model from loosening automatically along the threads on the bolt or screw rod.

[0004] The locking effect of the locking nut in the above case is poor, resulting in the phenomenon that the nut is easily loosened due to external vibration, reducing the locking effect. Therefore, we provide an improved locking nut. Content of the Utility Model

[0005] The purpose of the utility model is to provide an improved locking nut to solve the problems raised in the above background technique.

[0006] To achieve the above object, the present utility model provides the following technical solution: An improved locking nut, including a bolt body, and a nut body threadedly connected to the surface of the bolt body. A movable extrusion block is provided below the nut body and on the surface of the bolt body. It also includes fixing grooves, the number of which is two and are respectively opened on the left and right sides of the bottom of the nut body. A fixing block is installed on the inner wall of the fixing groove, and the top of the fixing block is fixedly connected to the top of the inner wall of the fixing groove through a fixing rod. A moving block is slidably connected to the surface of the fixing rod, and a buffer spring is sleeved on the surface of the fixing rod. Adjusting blocks are installed on both the left and right sides of the bottom of the moving block. The bottom of the adjusting block sequentially penetrates through the fixing block and the fixing groove from top to bottom and extends to the outside of the fixing groove. The bottoms of the two adjusting blocks on the same side are fixedly connected through a mounting plate. The bottoms of the two mounting plates and on the surface of the extrusion block are fixedly connected through an annular plate. The inner wall of the annular plate is in rotational contact with the surface of the extrusion block. Rotating blocks are installed on both the left and right sides of the inner wall of the annular plate. An annular groove adapted to the rotating block is opened on the surface of the extrusion block. One side of the rotating block close to the annular groove penetrates through the annular groove and extends into it to be in rotational contact with the inner wall of the annular groove.

[0007] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0008] Through the mutual cooperation of the extrusion block, fixing groove, fixing block, fixing rod, moving block, buffer spring, adjusting block, mounting plate, annular plate, rotating block and annular groove, the present utility model improves the locking effect of the nut, reduces the phenomenon that the nut is prone to looseness, improves the stability of the nut during use, and improves the practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a structural sectional view of the front view of the present utility model;

[0010] Figure 2 It is a three-dimensional structural schematic diagram of the nut body, mounting plate and annular plate of the present utility model;

[0011] Figure 3 It is a structural sectional view of the front view of the nut body, extrusion block, annular groove, locking block and connecting spring of the present utility model.

[0012] In the figure: 1 bolt body, 2 nut body, 3 extrusion block, 4 fixing groove, 5 fixing block, 6 fixing rod, 7 moving block, 8 buffer spring, 9 adjusting block, 10 mounting plate, 11 annular plate, 12 rotating block, 13 annular groove, 14 chute, 15 sliding rod, 16 slider, 17 inclined block, 18 locking block, 19 inclined plate, 20 connecting spring DETAILED DESCRIPTION OF THE EMBODIMENTS

[0013] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0014] Please refer to Figures 1-3 , an improved locking nut, including a bolt body 1 and a nut body 2 threadedly connected to the surface of the bolt body 1. A movable extrusion block 3 is provided below the nut body 2 and on the surface of the bolt body 1.

[0015] It further includes fixing grooves 4. The number of the fixing grooves 4 is two and they are respectively opened on the left and right sides of the bottom of the nut body 2. A fixing block 5 is fixedly connected to the inner wall of the fixing groove 4. The top of the fixing block 5 is fixedly connected to the top of the inner wall of the fixing groove 4 through a fixing rod 6. A moving block 7 is slidably connected to the surface of the fixing rod 6. The surface of the moving block 7 is in sliding contact with the inner wall of the fixing groove 4. The bottom of the moving block 7 is in contact with the top of the fixing block 5. A buffer spring 8 is sleeved on the surface of the fixing rod 6. Adjusting blocks 9 are fixedly connected to the left and right sides of the bottom of the moving block 7. The bottom of the adjusting block 9 sequentially penetrates through the fixing block 5 and the fixing groove 4 from top to bottom and extends to the outside of the fixing groove 4.

[0016] The bottoms of the two adjusting blocks 9 on the same side are fixedly connected through a mounting plate 10. The bottoms of the two mounting plates 10 and on the surface of the extrusion block 3 are fixedly connected through an annular plate 11. The inner wall of the annular plate 11 is in rotational contact with the surface of the extrusion block 3. Rotating blocks 12 are fixedly connected to the left and right sides of the inner wall of the annular plate 11. An annular groove 13 adapted to the rotating block 12 is opened on the surface of the extrusion block 3. One side of the rotating block 12 close to the annular groove 13 penetrates through the annular groove 13 and extends into it to be in rotational contact with the inner wall of the annular groove 13.

[0017] Furthermore, a sliding groove 14 is opened on the top of the mounting plate 10. The left and right sides of the inner wall of the sliding groove 14 are fixedly connected through a sliding rod 15. A sliding block 16 is slidably connected to the surface of the sliding rod 15. An inclined block 17 is fixedly connected to the top of the sliding block 16. Locking blocks 18 are fixedly connected to the opposite sides of the two inclined blocks 17. An inclined plate 19 adapted to the inclined block 17 is fixedly connected to the bottom of the nut body 2 and at the position corresponding to the inclined block 17. One side of the inclined block 17 close to the inclined plate 19 is in sliding contact with the inclined plate 19. A connecting spring 20 is sleeved on the surface of the sliding rod 15. By setting the mutual cooperation of the sliding groove 14, the sliding rod 15, the sliding block 16, the inclined block 17, the locking block 18, the inclined plate 19 and the connecting spring 20, the locking effect during the use of the nut body 2 is further improved, and the anti-loosening effect is further improved.

[0018] Through the mutual cooperation of the extrusion block 3, the fixing groove 4, the fixing block 5, the fixing rod 6, the moving block 7, the buffer spring 8, the adjusting block 9, the mounting plate 10, the annular plate 11, the rotating block 12 and the annular groove 13, the locking effect of the nut is improved, the phenomenon that the nut is prone to looseness is reduced, the stability of the nut during use is improved, and the practicability is improved.

[0019] During use, the bolt body 1 passes through the assembly hole, and then the nut body 2 and the extrusion block 3 are sleeved on the surface of the bolt body 1. Rotate the nut body 2, and the nut body 2 drives the extrusion block 3 to move closer to the assembled object. When the extrusion block 3 comes into contact with the assembled object, at this time, continue to rotate the nut body 2, and the nut body 2 drives the annular plate 11 to rotate and move closer to the assembled object through the mounting plate 10, so that the extrusion block 3 moves closely against the assembled object. The extrusion block 3 squeezes the buffer spring 8 to move upward through the mounting plate 10, the adjusting block 9 and the moving block 7. At the same time, when the distance between the nut body 2 and the extrusion block 3 shrinks, due to the inclined surfaces of the inclined plate 19 and the inclined block 17, the inclined block 17 drives the slider 16 to move away from the adjusting block 9, and the slider 16 squeezes the connecting spring 20 to move. The inclined block 17 drives the locking block 18 to move closer to the bolt body 1. The smaller the distance between the nut body 2 and the extrusion block 3, the tighter the locking block 18 contacts the bolt body 1.

[0020] Furthermore, due to the elastic force of the buffer spring 8 being squeezed, the buffer spring 8 has a force to drive the nut body 2 to move upward, so that it will not produce the phenomenon of self-rotation and loosening. Due to the frictional force between the locking block 18 and the bolt body 1, the nut body 2 will not produce the phenomenon of self-rotation further.

[0021] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An improved locking nut, characterized in that: It includes a bolt body (1) and a nut body (2) threadedly connected to the surface of the bolt body (1). Below the nut body (2) and on the surface of the bolt body (1), there is a movable extrusion block (3). It also includes fixing grooves (4). The number of the fixing grooves (4) is two and they are respectively opened on the left and right sides at the bottom of the nut body (2). On the inner wall of the fixing groove (4), there is a fixing block (5). The top of the fixing block (5) is fixedly connected to the top of the inner wall of the fixing groove (4) through a fixing rod (6). The surface of the fixing rod (6) is slidably connected with a moving block (7). A buffer spring (8) is sleeved on the surface of the fixing rod (6). On the left and right sides of the bottom of the moving block (7), there are adjusting blocks (9) installed. The bottom of the adjusting block (9) sequentially penetrates through the fixing block (5) and the fixing groove (4) from top to bottom and extends to the outside of the fixing groove (4). The bottoms of the two adjusting blocks (9) on the same side are fixedly connected through a mounting plate (10). At the bottom of the two mounting plates (10) and on the surface of the extrusion block (3), there is a ring plate (11) fixedly connected. The inner wall of the ring plate (11) is in rotational contact with the surface of the extrusion block (3). On the left and right sides of the inner wall of the ring plate (11), there are rotating blocks (12) installed. On the surface of the extrusion block (3), there is an annular groove (13) adapted to the rotating block (12). One side of the rotating block (12) close to the annular groove (13) penetrates through the annular groove (13) and extends into it to be in rotational contact with the inner wall of the annular groove (13).

2. An improved locknut according to claim 1, characterized in that: On the top of the mounting plate (10), there is a sliding groove (14). The left and right sides of the inner wall of the sliding groove (14) are fixedly connected through a sliding rod (15). The surface of the sliding rod (15) is slidably connected with a slider (16). On the top of the slider (16), there is an inclined block (17) installed. On the opposite sides of the two inclined blocks (17), there are locking blocks (18) installed. At the bottom of the nut body (2) and at the position corresponding to the inclined block (17), there is an inclined plate (19) adapted to the inclined block (17). A connecting spring (20) is sleeved on the surface of the sliding rod (15).

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