A locking screw

Abstract

The application discloses a kind of anti-loose screws, including: slider A, spring A, screw A, spring B, slider B, screw B, fixed block and press plate;Spring A and slider A are respectively loaded into the mounting hole above screw B;Notch is provided on slider A, and mounting hole is provided on slider B;Wherein, the notch position of slider A is aligned with the mounting hole of slider B;Slider B and spring B are respectively loaded into the mounting hole in the side of screw B, are compressed using press plate, and are fixed using screw A;The whole of slider A, spring A, screw A, spring B, slider B, screw B and press plate is loaded in fixed block.The application is designed based on the purpose of improving the anti-loose effect, compact structure, easy installation, not occupying equipment installation space, aims to solve the anti-loose problem of screw, and is widely used.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of mechanical and electrical machinery assembly, and particularly relates to a locking screw. BACKGROUND

[0002] When using a screw, it is always desired that the surface of the connected object can always have the initial pre-tightening force, but in the actual use process, with the continuous change of the bearing load, the relative movement of the internal and external threads is caused, and the existing screw inevitably produces loosening, causing the connection to be loose and invalid, reducing the pre-tightening force, and causing accidents. In particular, when the existing screw is applied to a place that needs to be frequently disassembled, the following shortcomings exist: A, the locking operation is relatively cumbersome; B, the locking effect is not ideal and is prone to loosening.

[0003] At present, screw locking mainly adopts the methods of applying thread glue, spring washer, damaging the thread pair, and connecting steel wire. In the place that needs to be frequently disassembled, the above-mentioned methods have problems such as inconvenient operation or poor locking effect. SUMMARY

[0004] The technical problem of the present application is to overcome the shortcomings of the prior art, provide a locking screw, and design based on the purposes of improving the locking effect, compact structure, easy installation, and not occupying the equipment installation space, aiming to solve the locking problem of the screw and widely applied.

[0005] In order to solve the above technical problems, the present application discloses a locking screw, comprising: a sliding block A, a spring A, a screw A, a spring B, a sliding block B, a screw B, a fixed block and a pressing plate.

[0006] The spring A and the sliding block A are respectively arranged in the mounting hole above the screw B;

[0007] The sliding block A is provided with a notch, and the sliding block B is provided with a mounting hole; wherein the notch position of the sliding block A is aligned with the mounting hole of the sliding block B;

[0008] The sliding block B and the spring B are respectively arranged in the mounting hole on the side of the screw B, and are pressed by the pressing plate and fixed by the screw A;

[0009] The sliding block A, the spring A, the screw A, the spring B, the sliding block B, the screw B and the pressing plate are arranged in the fixed block.

[0010] In the above locking screw, the bottom of the fixed block is designed with a boss, and the locking part matched with the fixed block is designed with a recess, and the boss of the fixed block is matched with the recess of the locking part to prevent the fixed block from rotating.

[0011] In the above locking screw, a limiting hole is arranged on the circumference of the fixed block, which is used to limit the sliding block B after the locking screw is tightened in place.

[0012] In the above anti-loose screw, when the tool is used to tighten the anti-loose screw, the slider A is pressed, at this time the slider B is retracted into the screw B body, ensuring normal tightening; after the anti-loose screw is tightened in place, the slider A is bounced back to the normal position under the action of the spring A, and the slider B is extended into the limiting hole under the action of the spring B, and the rotation of the anti-loose screw ensures reliable anti-loose.

[0013] In the above anti-loose screw, the tool is a flathead screwdriver.

[0014] In the above anti-loose screw, the diameter of the spring A is: Ф4mm.

[0015] In the above anti-loose screw, the diameter of the spring B is: Ф3mm.

[0016] In the above anti-loose screw, the screw A is an M1.6 screw.

[0017] The present application has the following advantages:

[0018] (1) The present application discloses an anti-loose screw, which does not rely on the use of existing thread glue, spring washer, destruction of threaded pair, series steel wire and other anti-loose methods, and uses a special mechanism to prevent screw loosening during use, and can realize quick disassembly and assembly, saving installation and maintenance time.

[0019] (2) The present application discloses an anti-loose screw, which can effectively prevent screw loosening, is suitable for frequent disassembly occasions, and is simple to operate without the need for special tools

[0020] (3) The present application discloses an anti-loose screw, which is compact in structure and small in space occupation, and the minimum installation space is: diameter Ф20mm, height 22mm.

[0021] (4) The present application discloses an anti-loose screw, which is suitable for all anti-loose screws and can replace existing screw anti-loose measures under the premise of ensuring sufficient installation space. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is an assembled rear view of an anti-loose screw in an embodiment of the present application;

[0023] Figure 2 is a structural exploded view of an anti-loose screw in an embodiment of the present application;

[0024] Figure 3 is a structural view of a fixing block in an embodiment of the present application. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the present application clearer, the following will further describe the disclosed embodiments of the present application in conjunction with the drawings.

[0026] As Figure 1 and Figure 2 , in this embodiment, the anti-loose screw comprises: sliding block A1, spring A2, screw A3, spring B4, sliding block B5, screw B6, fixed block 7 and pressing plate 8. Wherein, spring A2 and sliding block A1 are respectively installed in the mounting hole above screw B6; the notch is arranged on sliding block A1, the mounting hole is arranged on sliding block B5, and the notch position of sliding block A1 is aligned with the mounting hole of sliding block B5; sliding block B5 and spring B4 are respectively installed in the mounting hole on the side of screw B6, and are pressed by using pressing plate 8 and fixed by using screw A3; the whole of sliding block A1, spring A2, screw A3, spring B4, sliding block B5, screw B6 and pressing plate 8 is installed in fixed block 7.

[0027] In this embodiment, as Figure 3 , the bottom of fixed block 7 is designed with a boss, and the locking part matched with fixed block 7 is designed with a recess, and the boss of fixed block 7 is matched with the recess of the locking part to prevent the rotary motion of fixed block 7.

[0028] In this embodiment, as Figure 3 , the limiting hole 71 is arranged on the circumference of fixed block 7, which is used to limit sliding block B5 after the anti-loose screw is tightened in place.

[0029] In this embodiment, when the anti-loose screw is tightened by using a tool, sliding block A1 is pressed, at this time, sliding block B5 is retracted into the body of screw B6, and normal tightening is ensured; after the anti-loose screw is tightened in place, sliding block A1 is bounced back to the normal position under the action of spring A2, sliding block B5 is extended into the limiting hole 71 under the action of spring B4, and the rotation of the anti-loose screw is ensured to be reliable. Wherein, the tool used can be a flathead screwdriver.

[0030] In this embodiment, the diameter of spring A2 is: Ф4mm. The diameter of spring B4 is: Ф3mm. Screw A3 is M1.6 screw.

[0031] In this embodiment, the minimum installation space of the anti-loose screw is: diameter Ф20mm, height 22mm.

[0032] Although the present application has been disclosed with the above preferred embodiments, it is not intended to limit the present application, and any person skilled in the art can make possible changes and modifications to the technical solutions of the present application by using the above disclosed methods and technical contents without departing from the spirit and scope of the present application. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present application, which does not deviate from the technical solutions of the present application, belongs to the protection scope of the technical solutions of the present application.

[0033] The description herein of any aspect of the application is not meant to be limiting of that aspect of the application. For example, features of one aspect of the application can be interchanged with features of another aspect of the application.

Claims

1. A locking screw, characterized in that, include: Slider A (1), spring A (2), screw A (3), spring B (4), slider B (5), screw B (6), fixing block (7) and pressure plate (8); Spring A(2) and slider A(1) are respectively installed into the mounting holes above screw B(6); A notch is provided on slider A(1), and a mounting hole is provided on the side of screw B(6); wherein, the notch of slider A(1) is aligned with the mounting hole on the side of screw B(6); Slider B(5) and spring B(4) are respectively installed in the mounting holes on the side of screw B(6), pressed with pressure plate (8), and fixed with screw A(3); The entire assembly consisting of slider A (1), spring A (2), screw A (3), spring B (4), slider B (5), screw B (6) and pressure plate (8) is installed in the fixed block (7); The fixing block (7) has a limiting hole (71) in the circumferential direction, which is used to limit the slider B (5) after the anti-loosening screw is tightened into place; When using a tool to tighten the anti-loosening screw, press down slider A (1). At this time, slider B (5) retracts into the body of screw B (6) to ensure normal tightening. After the anti-loosening screw is tightened to the correct position, slider A (1) springs back to the normal position under the action of spring A (2), and slider B (5) extends into the limiting hole (71) under the action of spring B (4) to prevent the screw from rotating and ensure reliable anti-loosening.

2. The anti-loosening screw according to claim 1, characterized in that, The bottom of the fixing block (7) is designed with a boss, and the locking part that cooperates with the fixing block (7) is designed with a recess. The boss of the fixing block (7) cooperates with the recess of the locking part to prevent the fixing block (7) from rotating.

3. The anti-loosening screw according to claim 1, characterized in that, The tool is a flathead screwdriver.

4. The anti-loosening screw according to claim 1, characterized in that, The diameter of spring A(2) is Ф4mm.

5. The anti-loosening screw according to claim 1, characterized in that, The diameter of spring B(4) is Ф3mm.

6. The anti-loosening screw according to claim 1, characterized in that, Screw A(3) is an M1.6 screw.

7. The anti-loosening screw according to claim 1, characterized in that, The minimum installation space for anti-loosening screws is: diameter Ф20mm, height 22mm.

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