Screw with self-locking function

Abstract

The utility model discloses a screw with a self-locking function, which belongs to the technical field of screws and comprises a stud, two square openings are formed in the outer surface of the stud, a stress plate is fixedly connected to the inner bottom wall of the stud, first stress springs are fixedly connected to the front face and the back face of the stress plate respectively, and the first stress springs are fixedly connected to the inner bottom wall of the stud. The ends, away from each other, of the two first stress springs are fixedly connected with first limiting blocks and second limiting blocks correspondingly, and rectangular openings are formed in the left side face of each first limiting block and the left side face of each second limiting block. According to the screw with the self-locking function, through mutual cooperation of a fixing plate, a second stress spring, a rectangular opening and a limiting plate, a first limiting block and a second limiting block can be limited, and the situation that the first limiting block and the second limiting block retract into a stud due to external acting force is prevented; therefore, the problem that when the device is used, due to the fact that the device does not have the self-locking function, much inconvenience is caused in the using process is effectively solved.

Description

Technical Field

[0001] The present application belongs to the technical field of screws, and in particular relates to a screw with a self-tightening and locking function. Background Art

[0002] A screw is a tool that uses the physical and mathematical principles of the circular rotation of an object's inclined surface and friction to gradually fasten objects and machine parts. Screw is a general term for fasteners and a daily colloquialism. Screws are an indispensable industrial necessity in daily life: for example, cameras, glasses, clocks and electronics use extremely small screws; televisions, electrical products, musical instruments and furniture use general screws; as for engineering, construction, and bridges, large screws are required in combination with nuts for locking.

[0003] At present, most of the existing large screws do not have the automatic locking function when they are used. In order to enhance the fixing effect of the screws, workers generally use them with nuts. This method is not only inconvenient to use, but the nuts are also very easy to lose. Therefore, there are many inconveniences when using them.

[0004] Therefore, we propose a screw with self-tightening and locking function to solve the above problems. Utility Model Content

[0005] The purpose of the present application is to solve the problem in the prior art that screws lack an automatic locking function, resulting in inconvenience in use, and to propose a screw with a self-tightening and locking function.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A screw with a self-tightening locking function comprises a stud, the outer surface of the stud is provided with two square openings, the inner bottom wall of the stud is fixedly connected to a force-bearing plate, the front side and the back side of the force-bearing plate are fixedly connected to a first force-bearing spring, the ends of the two first force-bearing springs away from each other are respectively fixedly connected to a first limit block and a second limit block, the left side surface of each of the first limit block and the left side surface of the second limit block are provided with a rectangular opening, the inner wall of each of the first limit block and the inner wall of the second limit block are fixedly connected to a fixing plate, the two side surfaces of each fixing plate are fixedly connected to a second force-bearing spring, and the ends of each group of the second force-bearing springs away from each other are fixedly connected to the limiting plate.

[0008] Preferably, a circular plate is provided above the stud, and the bottom surface of the circular plate is fixedly connected to the top end of the stud.

[0009] Preferably, a cross groove is provided on the upper surface of the circular plate, and a cross plate is clamped inside the cross groove.

[0010] Preferably, a waterproof cap is fixedly connected to the upper surface of the cross plate, and the inner wall of the waterproof cap is in contact with the outer surface of the circular plate.

[0011] Preferably, a handle is provided above the waterproof cap, and the bottom surface of the handle is fixedly connected to the upper surface of the waterproof cap.

[0012] Preferably, a sealing gasket is fixedly connected to the bottom surface of the circular plate, and an inner wall of the sealing gasket is fixedly connected to the outer surface of the stud.

[0013] In summary, the technical effects and advantages of this application are:

[0014] By providing a square opening, a stud, a force-bearing plate, a first force-bearing spring, a first limit block and a second limit block that cooperate with each other, the first force-bearing spring can push out the first limit block and the second limit block, so that the two are clamped between the square opening and the connected object, thereby achieving the purpose of screw locking, and then by providing a fixing plate, a second force-bearing spring, a rectangular opening and a limit plate that cooperate with each other, the first limit block and the second limit block can be limited to prevent the first limit block and the second limit block from shrinking into the inside of the stud due to external forces, thereby effectively avoiding the problem that the device does not have a self-tightening and locking function when in use, which leads to many inconveniences when in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the screw with self-tightening and locking function of the utility model;

[0016] Figure 2 It is a three-dimensional structural schematic diagram of the stud of the utility model;

[0017] Figure 3 It is a three-dimensional structural schematic diagram of the first limit block of the utility model;

[0018] Figure 4 It is a three-dimensional structural schematic diagram of the first force-bearing spring of the utility model.

[0019] In the figure: 1. stud; 2. first limit block; 3. waterproof cap; 4. handle; 5. cross plate; 6. cross groove; 7. sealing gasket; 8. circular plate; 9. square opening; 10. second limit block; 11. force plate; 12. first force spring; 13. fixing plate; 14. second force spring; 15. limit plate; 16. rectangular opening. Implementation

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0021] Reference Figure 1-4 A screw with a self-tightening and locking function includes a stud 1, the outer surface of the stud 1 is provided with two square openings 9, the inner bottom wall of the stud 1 is fixedly connected with a force plate 11, a circular plate 8 is arranged above the stud 1, and the bottom surface of the circular plate 8 is fixedly connected to the top of the stud 1. By providing the circular plate 8, the stud 1 can be transmitted through the circular plate 8, thereby facilitating the application of rotational power to the stud 1.

[0022] The front and back sides of the force-bearing plate 11 are fixedly connected with the first force spring 12. A cross groove 6 is provided on the upper surface of the circular plate 8. A cross plate 5 is clamped inside the cross groove 6. By providing the cross groove 6 and the cross plate 5, the cross plate 5 can be clamped inside the cross groove 6, thereby driving the circular plate 8 to rotate.

[0023] The ends of the two first force springs 12 that are away from each other are fixedly connected to the first limit block 2 and the second limit block 10 respectively. The upper surface of the cross plate 5 is fixedly connected to the waterproof cap 3. The inner wall of the waterproof cap 3 is in contact with the outer surface of the circular plate 8. By providing the waterproof cap 3, the screws can be waterproofed by the waterproof cap 3 to prevent moisture in the air and rain from dripping on the surface of the screws, causing the screws to rust.

[0024] A rectangular opening 16 is provided on the left side surface of each first limit block 2 and the left side surface of the second limit block 10, a fixing plate 13 is fixedly connected to the inner wall of each first limit block 2 and the inner wall of the second limit block 10, and a second force spring 14 is fixedly connected to the two side surfaces of each fixing plate 13, a handle 4 is provided above the waterproof cap 3, and the bottom surface of the handle 4 is fixedly connected to the upper surface of the waterproof cap 3, and by providing the handle 4, the waterproof cap 3 can be driven to move upward by the handle 4, thereby facilitating the application of pulling force to the waterproof cap 3.

[0025] One end of each group of second force springs 14 that is away from each other is fixedly connected to a limiting plate 15, and a sealing gasket 7 is fixedly connected to the bottom surface of the circular plate 8. The inner wall of the sealing gasket 7 is fixedly connected to the outer surface of the stud 1. By providing the sealing gasket 7, the stud 1 can be sealed by the sealing gasket 7 to prevent water from penetrating into the surface of the stud 1.

[0026] The working principle of the utility model is as follows: when in use, the stud 1 is placed at the position to be tightened, and then the waterproof cap 3 and the cross plate 5 are pulled out from the inside of the cross groove 6 by the handle 4, and then a tool is used to extend into the inside of the cross groove 6, and then the circular plate 8 is rotated to drive the stud 1 to rotate. When the stud 1 is rotated to the limit, the sealing gasket 7 will be tightly squeezed on the surface of the object to be tightened, and at this time, the first limit block 2 and the second limit block 10 will be pushed out of the square opening 9 under the action of the first force spring 12 after losing the squeeze, so that the bolt is locked by the first limit block 2 and the second limit block 10, and at the same time, the limit Similarly, when the positioning plate 15 lacks the squeezing of the stud 1, the second force spring 14 will push the limiting plate 15 out, thereby limiting the first limiting block 2 and the second limiting block 10 through the second limiting plate 15, thereby ensuring that the first limiting block 2 and the second limiting block 10 will not return to the inside of the stud 1 due to external forces. When the stud 1 is locked, the cross plate 5 is re-engaged in the inside of the cross groove 6, so that the waterproof cap 3 is indirectly fixed on the circular plate 8, thereby effectively avoiding the problem that when the device is in use, the screws lack the automatic locking function, resulting in the need to use nuts to lock the screws, which is inconvenient.

[0027] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0028] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0029] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A screw with a self-tightening and locking function, comprising a stud (1), characterized in that: The outer surface of the stud (1) is provided with two square openings (9); the inner bottom wall of the stud (1) is fixedly connected to a force-bearing plate (11); the front side and the back side of the force-bearing plate (11) are fixedly connected to a first force-bearing spring (12); the ends of the two first force-bearing springs (12) that are away from each other are fixedly connected to a first limit block (2) and a second limit block (10), respectively; the left side surface of each first limit block (2) and the left side surface of the second limit block (10) are provided with a rectangular opening (16); the inner wall of each first limit block (2) and the inner wall of the second limit block (10) are fixedly connected to a fixing plate (13); the two side surfaces of each fixing plate (13) are fixedly connected to a second force-bearing spring (14); and the ends of each group of the second force-bearing springs (14) that are away from each other are fixedly connected to a limit plate (15).

2. A screw with self-tightening and locking function according to claim 1, characterized in that: A circular plate (8) is arranged above the stud (1), and the bottom surface of the circular plate (8) is fixedly connected to the top end of the stud (1).

3. A screw with self-tightening and locking function according to claim 2, characterized in that: A cross groove (6) is provided on the upper surface of the circular plate (8), and a cross plate (5) is clamped inside the cross groove (6).

4. A screw with self-tightening and locking function according to claim 3, characterized in that: A waterproof cap (3) is fixedly connected to the upper surface of the cross plate (5), and the inner wall of the waterproof cap (3) is in contact with the outer surface of the circular plate (8).

5. The screw with self-tightening and locking function according to claim 4, characterized in that: A handle (4) is provided above the waterproof cap (3), and the bottom surface of the handle (4) is fixedly connected to the upper surface of the waterproof cap (3).

6. The screw with self-tightening and locking function according to claim 2, characterized in that: A sealing gasket (7) is fixedly connected to the bottom surface of the circular plate (8), and an inner wall of the sealing gasket (7) is fixedly connected to the outer surface of the stud (1).

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