Locking screw

Abstract

The utility model relates to the technical field of locking screws, and provides a locking screw which comprises a nut, the surface of the nut is in threaded connection with a pipe sleeve body, an anti-loosening mechanism is arranged on the portion, located above the pipe sleeve body, of the surface of the nut, the top of the nut is fixedly connected with a rotating cap, and a transmission groove is formed in the top of the rotating cap. The pipe sleeve body comprises a first connecting plate, a fixing plate and a second connecting plate. The anti-loosening mechanism comprises a fastening nut and a cotter pin. According to the locking screw, by arranging the anti-loosening mechanism, after an object is fixed by a worker, a fastening nut in the anti-loosening mechanism can be screwed down, so that a rectangular groove in the top of the fastening nut corresponds to a round hole in the side face of the nut, and then a cotter pin penetrates through the round hole in the side face of the nut and is embedded into the rectangular groove in the top of the fastening nut; the fastening nut can be fixed by rotating the nut, so that the fastening nut cannot rotate, the anti-loosening purpose is achieved, and the use effect of the screw is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of locking screws, in particular to a locking screw. Background Art

[0002] Fastening screws have always been a locking part that has been constantly pursued in the field of locking parts machinery. They are widely used in the fields of automobiles, motorcycles, etc. The design of this screw is to reduce the fastening time and provide additional locking and anti-loosening functions through its special structure and material.

[0003] A Chinese patent discloses a locking screw, with the publication number CN 211693177 U. The article states that "it includes a screw head and a screw core connected to the screw head at one end, the screw head and the screw core are both cylindrical structures, a first thread is provided on the screw head, a second thread is provided on the screw core, the thread direction of the first thread is the same as the thread direction of the second thread, and the pitch of the first thread is greater than the pitch of the second thread. The utility model has a simple structure, and the pitch of the screw head is greater than the pitch of the screw core. Therefore, when the screw core is raised by one pitch, the height of the screw core raised upward does not actually reach one pitch, so that the screw core cannot rise, and the screw core cannot be driven to rise, thereby realizing the self-locking function of the screw; because the thread lead angle of the first thread is smaller than the thread lead angle of the second thread, but the screw head does not meet the rotation requirement of the screw core, it virtually prevents the screw core from rising, thereby further achieving the self-locking effect." However, in the prior art, the screw is not provided with an anti-loosening structure, and it is still possible to loosen when in use, which will affect the use effect of the screw. Therefore, it is necessary to design a locking screw. Utility Model Content

[0004] The utility model aims to provide a locking screw, which solves the problem that the screw in the related art is not provided with an anti-loosening structure and may still be loosened during use, thus affecting the use effect of the screw.

[0005] The technical solution of the utility model is as follows:

[0006] A locking screw comprises a nut, wherein the surface of the nut is threadedly connected to a pipe sleeve body, and an anti-loosening mechanism is arranged on the surface of the nut above the pipe sleeve body, a rotating cap is fixedly connected to the top of the nut, and a transmission groove is arranged on the top of the rotating cap.

[0007] Preferably, the sleeve body includes a first connecting plate, a fixing plate and a second connecting plate, and the anti-loosening mechanism includes a fastening nut and a cotter pin.

[0008] Preferably, the surface of the nut is provided with two sets of different threads, and the two sets of threaded surfaces of the nut are respectively engaged with the pipe sleeve body and the anti-loosening mechanism.

[0009] Preferably, the transmission groove is arranged at the center of the rotating cap, and the transmission groove is arranged in a cross shape.

[0010] Preferably, a first connecting plate is threadedly connected to the surface of the nut, a fixing plate is fixedly connected to the top of the first connecting plate, and a second connecting plate is fixedly connected to the top of the fixing plate.

[0011] Preferably, a fastening nut is threadedly connected to the surface of the nut, and an opening pin penetrates through the side surface of the nut.

[0012] Preferably, a circular groove matching the nut is formed at the top of the second connecting plate, and the nut penetrates through the circular groove at the top of the second connecting plate.

[0013] Preferably, three groups of fixing plates are provided, and the fixing plates are made of carbon steel galvanized material.

[0014] Preferably, a rectangular groove is formed at the top of the fastening nut, and the opening pin is embedded inside the groove at the top of the fastening nut.

[0015] Preferably, a circular hole matching the opening pin is formed on the side surface of the nut, the opening pin penetrates through the circular hole on the side surface of the nut, and the opening pin is made of carbon steel.

[0016] The beneficial effects of the present utility model are as follows:

[0017] 1. By providing a loosening prevention mechanism, after the staff fixes the object, the fastening nut in the loosening prevention mechanism can be tightened, so that the rectangular groove at the top of the fastening nut corresponds to the circular hole on the side surface of the nut, and then the opening pin is penetrated through the circular hole on the side surface of the nut and embedded inside the rectangular groove at the top of the fastening nut, so as to fix the fastening nut and make the fastening nut unable to rotate, thereby achieving the purpose of preventing loosening and ensuring the use effect of the screw.

[0018] 2. Through the sleeve body, the staff can screw the first connecting plate of the sleeve body onto the surface of the nut, then fix the second connecting plate with a tool, and finally pull the nut to drive the first connecting plate to squeeze the fixing plate, so that the fixing plate is bent into a petal shape, and then the workpiece is fixed by the nut, which can further improve the fixing effect of the screw. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The following further describes the present utility model in detail in conjunction with the drawings and specific embodiments.

[0020] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0021] Figure 2 is a structural schematic diagram of the sleeve of the present utility model;

[0022] Figure 3 Schematic diagram of the nut structure of the present utility model;

[0023] Figure 4 Schematic diagram of the fastening nut structure of the present utility model;

[0024] Figure 5 Schematic diagram of the round hole structure of the present utility model.

[0025] In the figure: 1, nut; 2, sleeve body; 21, first connecting plate; 22, fixing plate; 23, second connecting plate; 3, anti-loosening mechanism; 31, fastening nut; 32, split pin; 4, rotating cap; 5, transmission groove. Specific embodiments

[0026] Next, in combination with the embodiments of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present utility model.

[0027] As Figures 1-5 shown, this embodiment proposes a locking screw, including a nut 1. The surface of the nut 1 is threadedly connected with a sleeve body 2, and an anti-loosening mechanism 3 is arranged above the sleeve body 2 on the surface of the nut 1. The top of the nut 1 is fixedly connected with a rotating cap 4, and a transmission groove 5 is opened at the top of the rotating cap 4.

[0028] In this embodiment, the sleeve body 2 includes a first connecting plate 21, a fixing plate 22 and a second connecting plate 23. The anti-loosening mechanism 3 includes a fastening nut 31 and a split pin 32. By setting the sleeve body 2 and the anti-loosening mechanism 3, the fixing effect of the locking screw can be improved, and the purpose of anti-loosening can be achieved to ensure the use effect of the locking screw.

[0029] In this embodiment, two different threads are arranged on the surface of the nut 1. The first connecting plate 21 of the sleeve body 2 and the fastening nut 31 of the anti-loosening mechanism 3 are respectively engaged on the two threaded surfaces of the nut 1. By setting the two threads on the surface of the nut 1, the first connecting plate 21 of the sleeve body 2 and the fastening nut 31 of the anti-loosening mechanism 3 can be respectively installed on the surface of the nut 1.

[0030] In this embodiment, the transmission groove 5 is arranged at the center of the rotating cap 4, and the transmission groove 5 is arranged in a "cross" shape. By setting the transmission groove 5, the staff can embed the tightening tool into the inside of the transmission groove 5, and then turn the tightening tool, so that the tightening tool drives the nut 1 to rotate through the rotating cap 4.

[0031] In this embodiment, a first connecting plate 21 is threadedly connected to the surface of the nut 1. A fixing plate 22 is fixedly connected to the top of the first connecting plate 21, and a second connecting plate 23 is fixedly connected to the top of the fixing plate 22. Workers can improve the fixing effect of the nut 1 through the mutual cooperation among the first connecting plate 21, the fixing plate 22, and the second connecting plate 23.

[0032] In this embodiment, a fastening nut 31 is threadedly connected to the surface of the nut 1, and a split pin 32 penetrates through the side of the nut 1. Workers can improve the fastening effect of the fastening nut 31 through the mutual cooperation between the fastening nut 31 and the split pin 32.

[0033] In this embodiment, a circular groove matching the nut 1 is formed at the top of the second connecting plate 23, and the nut 1 penetrates through the circular groove at the top of the second connecting plate 23. Workers can pass the nut 1 through the circular groove at the top of the second connecting plate 23, then screw the first connecting plate 21 onto the surface of the nut 1, and then fix the second connecting plate 23 of the sleeve body 2 with a tool. Subsequently, the nut 1 is pulled to drive the first connecting plate 21 to press against the fixing plate 22.

[0034] In this embodiment, there are three groups of fixing plates 22, and the material of the fixing plates 22 is carbon steel galvanized material. When the first connecting plate 21 presses against the fixing plate 22, the fixing plate 22 will become a petal shape, and then the workpiece is fixed by the nut 1, which can further improve the fixing effect of the screw.

[0035] In this embodiment, a rectangular groove is formed at the top of the fastening nut 31, and the split pin 32 is embedded inside the groove at the top of the fastening nut 31. The fastening nut 31 is tightened so that the rectangular groove at the top of the fastening nut 31 corresponds to the round hole on the side of the nut 1. At this time, the split pin 32 is passed through the round hole on the side of the nut 1 and embedded inside the rectangular groove at the top of the fastening nut 31, and then the fastening nut 31 can be fixed so that the fastening nut 31 cannot rotate.

[0036] In this embodiment, a round hole matching the split pin 32 is formed on the side of the nut 1, and the split pin 32 penetrates through the round hole on the side of the nut 1. The split pin 32 is made of carbon steel. Workers can pass the split pin 32 through the round hole on the side of the nut 1 and embed it inside the rectangular groove at the top of the fastening nut 31. At this time, the split pin 32 can serve the purpose of limiting the fastening nut 31.

[0037] In use, first screw the first connecting plate 21 onto the surface of the nut 1. Subsequently, by providing the fixing plate 22, the staff can pass the nut 1 and the sleeve body 2 through the connecting piece. Then, fix the second connecting plate 23 of the sleeve body 2 with a tool. Subsequently, pull the nut 1, so that the nut 1 drives the first connecting plate 21 to press the fixing plate 22, thereby bending the fixing plate 22 into a petal shape, which can improve the fixing effect of the screw. Then remove the nut 1, and screw the fastening nut 31 onto the surface of the nut 1. Subsequently, pass the nut 1 through the workpiece and through the circular groove at the top of the second connecting plate 23. Then insert the tightening tool into the transmission groove 5 and rotate the tool, so that the tool drives the nut 1 to rotate through the rotating cap 4. At this time, the nut 1 will be inserted into the inside of the connecting piece through the second connecting plate 23 and the first connecting plate 21. Then, tighten the fastening nut 31 so that the rectangular groove at the top of the fastening nut 31 corresponds to the circular hole on the side of the nut 1. At this time, pass the split pin 32 through the circular hole on the side of the nut 1 and insert it into the rectangular groove at the top of the fastening nut 31, then the fastening nut 31 can be fixed, so that the fastening nut 31 cannot rotate, thus achieving the purpose of preventing loosening to ensure the use effect of the screw. Subsequently, the workpiece can be fixed.

[0038] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A locking screw, characterized in that, It includes a nut (1), a sleeve body (2) is threadedly connected to the surface of the nut (1), and an anti-loosening mechanism (3) is arranged above the sleeve body (2) on the surface of the nut (1). A rotating cap (4) is fixedly connected to the top of the nut (1), and a transmission groove (5) is formed in the top of the rotating cap (4).

2. A locking screw according to claim 1, characterized in that, The sleeve body (2) includes a first connecting plate (21), a fixing plate (22) and a second connecting plate (23), and the anti-loosening mechanism (3) includes a fastening nut (31) and a split pin (32).

3. A locking screw according to claim 1, characterized in that, Two different threads are provided on the surface of the nut (1), and the sleeve body (2) and the anti-loosening mechanism (3) are respectively engaged with the two threaded surfaces of the nut (1).

4. A locking screw according to claim 1, characterized in that, The transmission groove (5) is arranged at the center of the rotating cap (4), and the transmission groove (5) is arranged in a "cross" shape.

5. A locking screw according to claim 2, characterized in that, The first connecting plate (21) is threadedly connected to the surface of the nut (1), the fixing plate (22) is fixedly connected to the top of the first connecting plate (21), and the second connecting plate (23) is fixedly connected to the top of the fixing plate (22).

6. A locking screw according to claim 2, characterized in that, The fastening nut (31) is threadedly connected to the surface of the nut (1), and the split pin (32) penetrates through the side of the nut (1).

7. A locking screw according to claim 5, characterized in that, A circular groove matching the nut (1) is formed in the top of the second connecting plate (23), and the nut (1) penetrates through the circular groove at the top of the second connecting plate (23).

8. A locking screw according to claim 5, characterized in that, Three groups of the fixing plates (22) are provided, and the material of the fixing plates (22) is carbon steel galvanized material.

9. A locking screw according to claim 6, characterized in that, A rectangular groove is formed in the top of the fastening nut (31), and the split pin (32) is embedded in the groove at the top of the fastening nut (31).

10. A locking screw according to claim 6, characterized in that, A circular hole matching the split pin (32) is formed in the side of the nut (1), the split pin (32) penetrates through the circular hole in the side of the nut (1), and the split pin (32) is made of carbon steel.

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