Anti-loosening screw fastening device

Abstract

The utility model relates to the technical field of screws, in particular to an anti-loosening screw fastening device which comprises an end head, a screw rod and a nut, the end head is installed at one end of the screw rod, the nut is arranged on the screw rod in a sleeved mode, the screw rod and the nut are in threaded fit, and the anti-loosening screw fastening device further comprises an end plate, an installation mechanism and a positioning mechanism. The mounting mechanism is used for mounting the end plate and comprises a positioning hole, a positioning rod and a connecting seat, the end plate is mounted on the outer side of the connecting seat, and the positioning mechanism comprises an adjusting assembly, a fixing assembly, a plurality of limiting rods and a plurality of limiting holes. Therefore, the nut is not prone to loosening, in the actual use process, the nut can achieve a good fastening effect on a part, potential safety hazards of the part in the working process are reduced, and the locking effect is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of screw technology, specifically to an anti-loosening screw fastening device. Background Technology

[0002] Screw is a general term for fasteners. A screw consists of two parts: a head and a threaded shaft. It is usually used in conjunction with a nut. By utilizing the threaded engagement between the nut and the screw, parts can be fixed between the nut and the head, achieving a fastening effect between the parts.

[0003] In practical use, screws generally bear large loads. When parts are under vibration, the nuts on the screws are prone to loosening, which makes it impossible for the nuts to provide a good fastening effect on the parts, increasing the safety hazards when the parts are working. To address this problem, an anti-loosening screw fastening device is now provided. Utility Model Content

[0004] The purpose of this utility model is to provide an anti-loosening screw fastening device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An anti-loosening screw fastening device includes an end, a screw rod, and a nut. The end is installed on one end of the screw rod, and the nut is sleeved on the screw rod. The screw rod and the nut are threaded together. The device also includes an end plate, an installation mechanism, and a positioning mechanism. The end plate is located at the end of the screw rod away from the end. The installation mechanism is used to install the end plate.

[0007] The mounting mechanism includes positioning holes, positioning rods, and connecting seats, with the end plate mounted on the outside of the connecting seats;

[0008] The positioning mechanism includes an adjustment component, a fixing component, multiple limit rods and multiple limit holes. The multiple limit holes are equidistantly opened at the end of the nut away from the screw. One end of each limit rod is inserted into the interior of a limit hole. The adjustment component is located between the end plate and the multiple limit rods, and the fixing component is located between the adjustment component and the connecting seat.

[0009] As a further embodiment of this utility model: the positioning hole is opened at the end of the end that is away from the screw, one end of the positioning rod is inserted into the inside of the positioning hole, and the other end of the positioning rod is fixedly connected to the connecting seat. The middle part of the connecting seat is provided with a first cavity, and the inside of the positioning rod is provided with a second cavity connected to the first cavity.

[0010] As a further embodiment of this utility model: the adjustment component includes a rotating ring, an annular protrusion, and an annular groove. The annular protrusion is fixed to the inner wall of the end plate, and the annular groove is formed on the outer wall of the rotating ring. The rotating ring is rotatably mounted on the end plate through the annular groove and the annular protrusion. The other end of each limiting rod is fixedly connected to the rotating ring.

[0011] As a further embodiment of this utility model: the fixing component includes an anti-slip protrusion, a movable component, and multiple positioning blocks. The anti-slip protrusion is disposed on the side surface of the rotating ring away from the annular groove. The multiple positioning blocks are equidistantly disposed on the outer side of the connecting seat. One end of each positioning block abuts against the anti-slip protrusion. The movable component is located between the first cavity, the second cavity, and the multiple positioning blocks.

[0012] As a further embodiment of this utility model: the moving part includes a push rod, a push plate, multiple pull ropes, multiple guide wheels, multiple moving plates, several pull rods and several second springs. The push plate slides inside the second cavity, one end of the push rod slides on the connecting seat, and the other end of the push rod is fixedly connected to the push plate.

[0013] Each pair of pull rods is fixed to one side of a positioning block, and each pull rod is slidably mounted on the side wall of the connecting seat. The end of each pair of pull rods away from the positioning block is fixedly connected to a movable plate. Each second spring is sleeved on a pull rod, and both ends of each second spring are respectively connected to the connecting seat and the positioning block.

[0014] One end of each pull rope is connected to a moving plate, and the other end of each pull rope is connected to a push plate. Each guide wheel is located on one side of a pull rope and is installed at the junction of the first cavity and the second cavity.

[0015] As a further embodiment of this utility model: the inner wall of the second cavity is provided with multiple strip grooves at equal intervals, each strip groove is provided with a sliding block, each sliding block is fixed on the surface of the push plate, and a first spring is installed below each push plate, the other end of each first spring is fixedly connected to the inner wall of the second cavity.

[0016] As a further embodiment of this utility model: the cross-section of the positioning hole is polygonal, and the cross-sectional shape of the positioning rod matches the cross-sectional shape of the positioning hole.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. This utility model provides an anti-loosening screw fastening device. By setting a positioning mechanism, it can restrict the position of the nut, making it difficult for the nut to rotate on the end, thus preventing the nut from loosening. In actual use, the nut can provide a good fastening effect for the parts, reduce safety hazards during operation, and ensure the locking effect.

[0019] 2. The present invention provides an anti-loosening screw fastening device. By setting up an installation mechanism and using the insertion between the positioning hole and the positioning rod, the angle of the positioning rod relative to the end angle will not change. Furthermore, since multiple limiting rods can restrict the nut, it is ensured that the nut cannot rotate relative to the positioning rod, thereby ensuring the anti-loosening effect of the nut and the fastening effect of the screw.

[0020] 3. The present invention provides an anti-loosening screw fastening device in which the positioning rod is inserted into the positioning hole by means of plugging, which facilitates the installation and disassembly of the positioning rod and is convenient to use. At the same time, since the length of the positioning rod inserted into the positioning hole is adjustable, it is suitable for limiting and preventing loosening of nuts at different positions on the end, and has a wide range of applications. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model.

[0022] Figure 2 This is a cross-sectional view of the present invention.

[0023] Figure 3 This utility model Figure 2 A magnified structural diagram of part A in the middle.

[0024] Figure 4 This utility model Figure 2 A magnified structural diagram of part B.

[0025] Figure 5 This is a schematic diagram of the positioning hole in this utility model.

[0026] Figure 6 This is a schematic diagram of the positioning rod in this utility model.

[0027] Figure 7 This is a schematic diagram of the structure of the movable block in this utility model.

[0028] The components are as follows: 11. End; 12. Screw; 13. Nut; 14. Positioning hole; 15. Positioning rod; 16. End plate; 17. Connecting seat; 18. Rotary ring; 19. Annular protrusion; 20. Annular groove; 21. Limiting rod; 22. Limiting hole; 23. Push rod; 24. Push plate; 25. Strip groove; 26. Moving block; 27. First spring; 28. Pull rope; 29. ​​Guide wheel; 30. Moving plate; 31. Pull rod; 32. Second spring; 33. Positioning block; 34. Anti-slip protrusion. Detailed Implementation

[0029] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0030] The present invention provides the following preferred embodiments:

[0031] Example 1, as Figures 1-7 As shown, an anti-loosening screw fastening device includes an end 11, a screw 12, and a nut 13. The end 11 is installed on one end of the screw 12, and the end 11 and the screw 12 are integrally formed. The nut 13 is sleeved on the screw 12, and there is a threaded engagement between the screw 12 and the nut 13. In actual use, the nut 13 is screwed onto the end 11 to achieve the fastening effect of the parts. It also includes an end plate 16, a mounting mechanism, and a positioning mechanism. The end plate 16 is located at the end of the screw 12 away from the end 11, and the mounting mechanism is used to install the end plate 16.

[0032] The mounting mechanism includes a positioning hole 14, a positioning rod 15, and a connecting seat 17. The end plate 16 is mounted on the outside of the connecting seat 17. The mounting mechanism is used to mount the end plate 16 on the screw 12, so that the relative angle between the end plate 16 and the screw 12 is fixed.

[0033] The positioning mechanism includes an adjusting component, a fixing component, multiple limiting rods 21, and multiple limiting holes 22. The multiple limiting holes 22 are equidistantly located at the end of the nut 13 away from the screw 12. One end of each limiting rod 21 is inserted into the interior of a limiting hole 22. The adjusting component is located between the end plate 16 and the multiple limiting rods 21. The adjusting component is used to adjust the position of the multiple limiting rods 21 so that each limiting rod 21 can be aligned with a limiting hole 22, facilitating the insertion of the limiting rod 21 into the interior of the limiting hole 22. When the end is inserted into the limiting hole 22, the nut 13 can be limited, ensuring that the nut 13 is not easy to rotate on the end 11, thus making the nut 13 less likely to loosen. In actual use, the nut 13 can provide a good fastening effect for the parts, reduce the safety hazards of the parts during operation, and ensure the locking effect. The fixing component is located between the adjusting component and the connecting seat 17. The fixing component is used to fix the adjusting component after the position is adjusted, so that the adjusting component will not drive the multiple limiting rods 21 to rotate on the end plate 16.

[0034] like Figures 1-7 As shown, the positioning hole 14 is opened at the end of the end 11 away from the screw 12. One end of the positioning rod 15 is inserted into the interior of the positioning hole 14, and the other end of the positioning rod 15 is fixedly connected to the connecting seat 17. The connecting seat 17 has a first cavity in the middle, and the positioning rod 15 has a second cavity connected to the first cavity. Specifically, the positioning rod 15, the end plate 16 and the connecting seat 17 are integrally formed, which can ensure the connection strength between the positioning rod 15, the end plate 16 and the connecting seat 17 and improve the service life.

[0035] like Figures 1-7As shown, the adjustment assembly includes a rotating ring 18, an annular protrusion 19, and an annular groove 20. The annular protrusion 19 is fixed to the inner wall of the end plate 16, and the annular groove 20 is opened on the outer wall of the rotating ring 18. The rotating ring 18 is rotatably mounted on the end plate 16 through the annular groove 20 and the annular protrusion 19. The other end of each limiting rod 21 is fixedly connected to the rotating ring 18.

[0036] Specifically, in actual use, the rotating ring 18 and the annular protrusion 19 are rotatably connected by a bearing. After the nut 13 is tightened on the end 11 and the part is fixed, it rotates to the rotating ring 18, so that the rotating ring 18 can rotate on the inner wall of the end plate 16. When the rotating ring 18 rotates, it can drive the limiting rod 21 on the rotating ring 18 to rotate, so that each limiting rod 21 can be aligned with a limiting hole 22, which makes it easy to insert the limiting rod 21 into the inside of the limiting hole 22 later.

[0037] like Figures 1-7 As shown, the fixing assembly includes an anti-slip protrusion 34, a movable component, and multiple positioning blocks 33. The anti-slip protrusion 34 is disposed on the side surface of the rotating ring 18 away from the annular groove 20. The multiple positioning blocks 33 are equidistantly disposed on the outer side of the connecting seat 17. One end of each positioning block 33 abuts against the anti-slip protrusion 34. The anti-slip protrusion 34 can increase the friction effect between the positioning block 33 and the rotating ring 18, thereby improving the anti-rotation effect of the rotating ring 18. The movable component is located between the first cavity, the second cavity, and the multiple positioning blocks 33.

[0038] In use, the moving part can drive multiple positioning blocks 33 to move synchronously. When the limiting rod 21 is aligned with the limiting hole 22, the moving part can drive the positioning block 33 to move, so that the positioning block 33 can fit with the anti-slip protrusion 34, thereby fixing the rotating ring 18 and preventing the rotating ring 18 from rotating.

[0039] like Figures 1-7 As shown, the movable component includes a push rod 23, a push plate 24, multiple pull ropes 28, multiple guide wheels 29, multiple movable plates 30, several pull rods 31, and several second springs 32. The push plate 24 slides inside the second cavity, one end of the push rod 23 slides on the connecting seat 17, and the other end of the push rod 23 is fixedly connected to the push plate 24.

[0040] Each pair of pull rods 31 is fixed to one side of a positioning block 33, and each pull rod 31 is slidably mounted on the side wall of the connecting seat 17. The end of each pair of pull rods 31 away from the positioning block 33 is fixedly connected to a moving plate 30. Each second spring 32 is sleeved on a pull rod 31, and both ends of each second spring 32 are respectively connected to the connecting seat 17 and the positioning block 33.

[0041] In the initial state, when one side of the positioning block 33 is in close contact with the surface of the anti-slip protrusion 34, the second spring 32 is in a compressed but not fully compressed state;

[0042] One end of each pull rope 28 is connected to the movable plate 30, and the other end of each pull rope 28 is connected to the push plate 24. Each guide wheel 29 is located on one side of a pull rope 28 and is installed at the connection between the first cavity and the second cavity. The guide wheel 29 is used to guide the pull rope 28.

[0043] When it is necessary to rotate the rotating ring 18 to adjust the position of the limiting rod 21, press the push rod 23. The push rod 23 drives the push plate 24 to move inside the second cavity. When the push plate 24 moves, it can drive the moving plate 30 to move away from the positioning block 33 through the pull rope 28. At this time, the moving plate 30 drives the positioning block 33 away from the anti-slip protrusion 34 through the pull rod 31, releasing the limitation on the anti-slip protrusion 34. At the same time, the second spring 32 is compressed.

[0044] After the rotating ring 18 has rotated to the correct position, release the push rod 23. Under the action of the second spring 32, the positioning block 33 will be reset, so that the positioning block 33 can limit and fix the rotating ring 18 after the position has been adjusted.

[0045] like Figures 1-7 As shown, the inner wall of the second cavity is provided with multiple strip grooves 25 at equal intervals. A movable block 26 is slidably provided inside each strip groove 25. Each movable block 26 is fixed to the surface of the push plate 24. The sliding connection between the movable block 26 and the strip groove 25 can improve the stability of the push plate 24 when sliding and provide guidance for the movement of the push plate 24. A first spring 27 is installed below each push plate 24. The other end of each first spring 27 is fixedly connected to the inner wall of the second cavity.

[0046] In the initial state, the first spring 27 is in its natural state. When the push rod 23 is pressed, the push rod 23 drives the push plate 24 to move closer to the first spring 27, and the first spring 27 is compressed. When the push rod 23 is released, the push plate 24 can be reset under the action of the first spring 27.

[0047] like Figures 1-7 As shown, the cross-section of the positioning hole 14 is polygonal, and the cross-sectional shape of the positioning rod 15 matches the cross-sectional shape of the positioning hole 14. By utilizing the cooperation between the positioning hole 14 and the positioning rod 15, the positioning rod 15 cannot rotate inside the positioning hole 14, so that the angle of the positioning rod 15 relative to the end 11 will not change. Furthermore, since multiple limiting rods 21 can restrict the nut 13, it is ensured that the nut 13 cannot rotate relative to the positioning rod 15, thereby ensuring the anti-loosening effect of the nut 13 and ensuring the tightening effect of the screw.

[0048] Meanwhile, since the length of the positioning rod 15 inserted into the positioning hole 14 is adjustable, when the nut 13 is screwed to different positions on the end 11, it can achieve the effect of limiting the nut 13 and preventing loosening, and has a wide range of applications.

[0049] The beneficial effects of this utility model are specifically reflected in the fact that the above description is only a preferred embodiment of this utility model and is not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A screw fastening device for preventing loosening, comprising an end (11), a screw (12), and a nut (13), wherein the end (11) is installed on one end of the screw (12), the nut (13) is sleeved on the screw (12), and the screw (12) and the nut (13) are threadedly engaged, characterized in that, It also includes an end plate (16), an installation mechanism and a positioning mechanism. The end plate (16) is located at the end of the screw (12) away from the end (11). The installation mechanism is used to install the end plate (16). The mounting mechanism includes a positioning hole (14), a positioning rod (15), and a connecting seat (17), with an end plate (16) mounted on the outside of the connecting seat (17); The positioning mechanism includes an adjustment component, a fixing component, multiple limit rods (21) and multiple limit holes (22). The multiple limit holes (22) are equidistantly opened at one end of the nut (13) away from the screw (12). One end of each limit rod (21) is inserted into the interior of a limit hole (22). The adjustment component is located between the end plate (16) and the multiple limit rods (21), and the fixing component is located between the adjustment component and the connecting seat (17).

2. The anti-loosening screw fastening device according to claim 1, characterized in that, The positioning hole (14) is opened at the end of the end (11) away from the screw (12). One end of the positioning rod (15) is inserted into the interior of the positioning hole (14). The other end of the positioning rod (15) is fixedly connected to the connecting seat (17). The middle part of the connecting seat (17) is provided with a first cavity. The interior of the positioning rod (15) is provided with a second cavity connected to the first cavity.

3. The anti-loosening screw fastening device according to claim 2, characterized in that, The adjustment assembly includes a rotating ring (18), an annular protrusion (19) and an annular groove (20). The annular protrusion (19) is fixed on the inner wall of the end plate (16), and the annular groove (20) is opened on the outer wall of the rotating ring (18). The rotating ring (18) is rotatably mounted on the end plate (16) through the annular groove (20) and the annular protrusion (19). The other end of each limiting rod (21) is fixedly connected to the rotating ring (18).

4. The anti-loosening screw fastening device according to claim 3, characterized in that, The fixing component includes an anti-slip protrusion (34), a movable part, and multiple positioning blocks (33). The anti-slip protrusion (34) is located on the side surface of the rotating ring (18) away from the annular groove (20). Multiple positioning blocks (33) are equidistantly arranged on the outside of the connecting seat (17). One end of each positioning block (33) abuts against the anti-slip protrusion (34). The movable part is located between the first cavity, the second cavity, and the multiple positioning blocks (33).

5. The anti-loosening screw fastening device according to claim 4, characterized in that, The movable component includes a push rod (23), a push plate (24), multiple pull ropes (28), multiple guide wheels (29), multiple movable plates (30), several pull rods (31), and several second springs (32). The push plate (24) slides inside the second cavity, one end of the push rod (23) slides on the connecting seat (17), and the other end of the push rod (23) is fixedly connected to the push plate (24). Each pair of pull rods (31) is fixed to one side of a positioning block (33), and each pull rod (31) is slidably mounted on the side wall of the connecting seat (17). The end of each pair of pull rods (31) away from the positioning block (33) is fixedly connected to a moving plate (30). Each second spring (32) is sleeved on a pull rod (31), and both ends of each second spring (32) are respectively connected to the connecting seat (17) and the positioning block (33). One end of each pull rope (28) is connected to the moving plate (30), and the other end of each pull rope (28) is connected to the push plate (24). Each guide wheel (29) is located on one side of a pull rope (28) and installed at the junction of the first cavity and the second cavity.

6. The anti-loosening screw fastening device according to claim 5, characterized in that, The inner wall of the second cavity is provided with multiple strip grooves (25) at equal intervals. Each strip groove (25) has a sliding block (26) inside it. Each sliding block (26) is fixed on the surface of the push plate (24). Each push plate (24) has a first spring (27) installed below it. The other end of each first spring (27) is fixedly connected to the inner wall of the second cavity.

7. The anti-loosening screw fastening device according to claim 6, characterized in that, The cross-section of the positioning hole (14) is polygonal, and the cross-sectional shape of the positioning rod (15) matches the cross-sectional shape of the positioning hole (14).

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