Anti-loosening fastener and method of use

Abstract

The application relates to an anti-loose fastener and a use method thereof, which comprises a locking nut, one end of the locking nut is provided with a pressing plate and a sheet metal plate, the pressing plate, the sheet metal plate and the locking nut are provided with coaxial first screw holes on the end face of one end of the pressing plate, first screws are threadedly connected in the first screw holes, the sheet metal plate and the pressing plate are fixedly connected with the locking nut through the first screw holes and the first screws, and the sheet metal plate is fixed between the end face of the pressing plate and the locking nut. Advantages are that the press-fitting fixation of the sheet metal plate is changed into screw connection fixation, the sheet metal plate is still limited by the screws even if the pressing plate is deformed, and the sheet metal plate cannot be pulled out due to loosening; meanwhile, the locking nut and the screw port connection structure are arranged, the screw port guarantees the connection strength of the locking nut and the locking nut, the locking nut can effectively prevent the loosening of the locking nut on one hand, and can press the end face pressing plate on the other hand, so that the loosening of the sheet metal plate is avoided, and the loosening of the locking nut is further prevented.

Description

Technical Field

[0001] This invention relates to the field of fastener technology, and more particularly to an anti-loosening fastener and its method of use. Background Technology

[0002] like Figure 1 The diagram shown is a cross-sectional view of an existing anti-loosening fastener, which is a lock nut with a sheet metal plate fixed to one end by press-fitting. The process of screwing the bolt into the lock nut is as follows: Figures 2 to 4 As shown, the bolt's thread overcomes the resistance of the sheet metal sheet as it screws in. The sheet metal sheet deforms as it passes through the thread, and once the bolt is fully screwed in, the sheet metal sheet is secured within the bolt's thread, effectively preventing the bolt from loosening. The reason for using a sheet metal sheet here is that it has deformability, allowing the bolt to screw in. If a high-strength steel material like that used for nuts were used, the bolt would not be able to screw in properly due to its poor deformability.

[0003] However, the above structure has the following drawbacks: such as Figure 1 As shown, the sheet metal is fixed to the nut by a pressure plate on one side. During the process of screwing the bolt into the nut, the sheet metal undergoes... Figure 1 The deformation in the direction of the middle arrow causes the tablet compression to also change. Figure 1 The deformation in the direction shows that after the bolt is screwed in, the connection strength between the sheet metal and the nut decreases. Under high-frequency vibration conditions, this can easily cause the sheet metal to loosen and come out, resulting in the bolt loosening.

[0004] Therefore, this case is brought. Summary of the Invention

[0005] One of the objectives of this invention is to provide an anti-loosening fastener to prevent bolts from loosening.

[0006] To achieve the above objectives, the technical solution of the present invention is as follows:

[0007] An anti-loosening fastener includes a locking nut, one end of which is provided with a pressure plate and a sheet metal plate. The pressure plate, the sheet metal plate, and the end face of the locking nut with the pressure plate are provided with a coaxial first screw hole. A first screw is threaded into the first screw hole. Through the first screw hole and the first screw, the sheet metal plate and the pressure plate are fixedly connected to the locking nut, and the sheet metal plate is fixed between the end faces of the pressure plate and the locking nut.

[0008] Furthermore, the pressure plate includes an integrally formed end face pressure plate and a side face pressure plate. The first screw hole is provided on the end face pressure plate. The side face pressure plate and the side of the locking nut are provided with a coaxial second screw hole. A second screw is threaded into the second screw hole. The side face pressure plate and the locking nut are fixedly connected through the second screw hole and the second screw.

[0009] Furthermore, it includes a clamping nut, which is located at the end of the locking nut where the sheet metal plate is located.

[0010] Furthermore, the end face pressure plate is provided with an external threaded opening, the first threaded hole is located outside the external threaded opening, and the end face of the clamping nut is provided with an internal threaded opening that mates with the external threaded opening, and the end face of the internal threaded opening can be pressed on the end face pressure plate.

[0011] Furthermore, a rubber pad is provided on the end face of the locking nut away from the pressure plate.

[0012] Furthermore, the rubber pad is provided with hemispherical protrusions.

[0013] The second objective of this invention is to provide a method for using the aforementioned anti-loosening fastener, comprising the following steps:

[0014] S1. Place the sheet metal sheet and pressure plate on the lock nut, aligning the first screw hole on the sheet metal sheet, end face pressure plate, and lock nut, and aligning the second screw hole on the side pressure plate and lock nut at the same time;

[0015] S2. Screw in the first and second screws to fix the pressure plate, sheet metal plate and locking nut, and fix the sheet metal plate between the end faces of the pressure plate and the locking nut;

[0016] S3. Bolt and lock nut connection;

[0017] S4. Screw the clamping nut onto the bolt, connecting the internal thread of the clamping nut with the external thread of the locking nut, until the internal thread of the clamping nut presses against the end face pressure plate.

[0018] The third objective of this invention is to provide a method for using the aforementioned anti-loosening fastener, comprising the following steps:

[0019] S1. Connect the bolt and lock nut;

[0020] S2. Place the sheet metal sheet and pressure plate on the lock nut, aligning the first screw hole on the sheet metal sheet, end face pressure plate, and lock nut, and aligning the second screw hole on the side pressure plate and lock nut at the same time;

[0021] S3. Screw in the first and second screws to fix the pressure plate, sheet metal plate and locking nut, and fix the sheet metal plate between the end faces of the pressure plate and the locking nut;

[0022] S4. Screw the clamping nut onto the bolt, connecting the internal thread of the clamping nut with the external thread of the locking nut, until the internal thread of the clamping nut presses against the end face pressure plate.

[0023] The advantages of this invention are: the pressing and fixing of the sheet metal sheet is changed to screw connection and fixing. Even if the sheet metal sheet is deformed, the screw will still limit the sheet metal sheet and it will not come out due to loosening; at the same time, a clamping nut and screw connection structure are set. The screw ensures the connection strength of the locking nut and the clamping nut. The clamping nut can effectively prevent the locking nut from loosening on the one hand, and can press the end face of the sheet metal sheet on the other hand, thus preventing the sheet metal sheet from loosening, thereby further preventing the locking nut from loosening. Attached Figure Description

[0024] Figure 1 This is a cross-sectional schematic diagram of anti-loosening fasteners in the background art;

[0025] Figure 2 This is a schematic diagram of the connection between the anti-loosening fastener and the bolt after the anti-loosening fastener in the background technology is adopted. At this time, the bolt has not yet been screwed into the nut.

[0026] Figure 3 This is a schematic diagram showing the connection between the anti-loosening fastener and the bolt after adopting the anti-loosening fastener in the background technology. At this point, the bolt has just been screwed into the nut.

[0027] Figure 4 This is a schematic diagram showing the connection between the anti-loosening fastener described in the background technology and the bolt, at which point the bolt has been screwed into the nut;

[0028] Figure 5 This is a cross-sectional view of the anti-loosening fastener in the embodiment;

[0029] Figure 6 for Figure 5 Enlarged diagram of part A in the diagram;

[0030] Figure 7 This is a schematic diagram showing the connection between the locking nut and the clamping nut in the embodiment;

[0031] Label Explanation

[0032] 1-Locking nut; 2-Pressure nut; 3-Pressure plate; 301-End face pressure plate; 302-Side pressure plate; 4-Sheet metal plate; 5-First screw hole; 6-First screw; 7-Second screw hole; 8-Second screw; 9-External threaded opening; 10-Internal threaded opening; 11-Rubber pad; 12-Hemispherical protrusion; 13-Bolt. Detailed Implementation

[0033] The present invention will be further described in detail below with reference to embodiments. It should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., used in this document indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the present invention.

[0034] This embodiment proposes an anti-loosening fastener, such as... Figures 5 to 7 As shown, the device includes a locking nut 1 and a clamping nut 2. One end of the locking nut 1 is provided with a pressure plate 3 and a sheet metal sheet 4. The pressure plate 3 includes an integrally formed end face pressure plate 301 and a side face pressure plate 302. The end face pressure plate 301, sheet metal sheet 4, and locking nut 1 are provided with a coaxial first screw hole 5 on their end faces. A first screw 6 is internally threaded into the first screw hole 5. Through the first screw hole 5 and the first screw 6, the sheet metal sheet 4 and the pressure plate are fixedly connected to the locking nut 1, and the sheet metal sheet 4 is fixed between the end faces of the pressure plate and the locking nut 1. The side face pressure plate 302 and the side face of the locking nut 1 are provided with a coaxial second screw hole 7. A second screw 8 is internally threaded into the second screw hole 7. Through the second screw hole 7 and the second screw 8, the side face pressure plate 302 is fixedly connected to the locking nut 1.

[0035] The clamping nut 2 is located at the end of the locking nut 1 where the sheet metal plate 4 is located. The end face pressure plate 301 is provided with an external threaded opening 9, and the first threaded hole 5 is located outside the external threaded opening 9. The end face of the clamping nut 2 is provided with an internal threaded opening 10 that mates with the external threaded opening 9, and the end face of the internal threaded opening 10 can be pressed on the end face pressure plate 301.

[0036] This anti-loosening fastener has two installation methods. The first installation method includes the following steps:

[0037] S1. Place the sheet metal sheet 4 and the pressure plate on the locking nut 1, aligning the sheet metal sheet 4, the end face pressure plate 301, and the first screw hole 5 on the locking nut 1, while aligning the side pressure plate 302 and the second screw hole 7 on the locking nut 1.

[0038] S2. Screw in the first screw 6 and the second screw 8 to fix the pressure plate 3, the sheet metal plate 4 and the locking nut 1, and fix the sheet metal plate 4 between the end face pressure plate 301 and the end face of the locking nut 1. The side pressure plate further improves the connection strength between the pressure plate 3 and the locking nut 1.

[0039] S3. Bolt 13 and lock nut 1 are connected;

[0040] S4. Screw the clamping nut 2 onto the bolt 13, so that the internal thread 10 of the clamping nut 2 and the external thread 9 of the locking nut 1 are connected, until the internal thread 10 of the clamping nut 2 presses against the end face plate 301.

[0041] The first installation method is similar to the existing anti-loosening fastener installation method, but the press-fit fixing of the sheet metal plate 4 is changed to screw connection fixing. Even if the pressure plate 3 is deformed, the sheet metal plate 4 will still be limited by screws and will not come out due to loosening. At the same time, a clamping nut 2 and a screw connection structure are set. The screw ensures the connection strength of the locking nut 1 and the clamping nut 2. The clamping nut 2 can effectively prevent the locking nut 1 from loosening on the one hand, and can press the end face pressure plate 301 on the other hand to prevent the sheet metal plate 4 from loosening, thereby further preventing the locking nut 1 from loosening.

[0042] Another installation method includes the following steps:

[0043] S1. Connect bolt 13 and lock nut 1;

[0044] S2. Place the sheet metal sheet 4 and the pressure plate on the locking nut 1, aligning the sheet metal sheet 4, the end face pressure plate 301, and the first screw hole 5 on the locking nut 1, while aligning the side pressure plate 302 and the second screw hole 7 on the locking nut 1.

[0045] S3. Screw in the first screw 6 and the second screw 8 to fix the pressure plate, sheet metal plate 4 and locking nut 1, and fix the sheet metal plate 4 between the end face pressure plate 301 and the end face of locking nut 1. During the screwing in of the first screw 6, the sheet metal plate 4 will gradually be inserted into the thread of the bolt 13 to achieve locking.

[0046] S4. Screw the clamping nut 2 onto the bolt 13, so that the internal thread 10 of the clamping nut 2 and the external thread 9 of the locking nut 1 are connected, until the internal thread 10 of the clamping nut 2 presses against the end face plate 301.

[0047] The second installation method is slightly more difficult than the first, but the deformation of the pressure plate itself will be less. Tightening the nut 2 produces the same effect as the first installation method.

[0048] As a preferred embodiment, a rubber pad 11 is provided on the end face of the locking nut 1 away from the pressure plate to increase the friction between the nut and the bolt 13; at the same time, a hemispherical protrusion 12 is provided on the rubber pad 11. When the nut and the bolt 13 are pressed together, the rebound force of the hemispherical protrusion 12 makes the threads of the nut and the bolt 13 press against each other, which further prevents loosening.

[0049] The above embodiments are only used to explain the concept of the present invention, and are not intended to limit the protection of the present invention. Any non-substantial modifications made to the present invention using this concept should fall within the protection scope of the present invention.

Claims

1. A fastener designed to prevent loosening, characterized in that, The device includes a locking nut, one end of which is provided with a pressure plate and a sheet metal plate. The pressure plate, sheet metal plate, and locking nut are provided with a coaxial first screw hole on the end face of the pressure plate. A first screw is threaded into the first screw hole. Through the first screw hole and the first screw, the sheet metal plate and the pressure plate are fixedly connected to the locking nut, and the sheet metal plate is fixed between the end faces of the pressure plate and the locking nut. The pressure plate includes an integrally formed end face pressure plate and a side face pressure plate. The first screw hole is provided on the end face pressure plate. The side face pressure plate and the side of the locking nut are provided with a coaxial second screw hole. A second screw is threaded into the second screw hole. The side face pressure plate and the locking nut are fixedly connected through the second screw hole and the second screw. It includes a clamping nut, which is located at the end of the locking nut where the sheet metal plate is located; the end face pressure plate is provided with an external threaded opening, the first threaded hole is located outside the external threaded opening, and the end face of the clamping nut is provided with an internal threaded opening that mates with the external threaded opening, and the end face of the internal threaded opening can be pressed on the end face pressure plate.

2. The anti-loosening fastener as described in claim 1, characterized in that, A rubber pad is provided on the end face of the locking nut away from the pressure plate.

3. The anti-loosening fastener as described in claim 2, characterized in that, The rubber pad has hemispherical protrusions.

4. A method of using the anti-loosening fastener according to any one of claims 1 to 3, characterized in that, Includes the following steps: S1. Place the sheet metal sheet and pressure plate on the lock nut, aligning the first screw hole on the sheet metal sheet, end face pressure plate, and lock nut, and aligning the second screw hole on the side pressure plate and lock nut at the same time; S2. Screw in the first and second screws to fix the pressure plate, sheet metal plate and locking nut, and fix the sheet metal plate between the end faces of the pressure plate and the locking nut; S3. Bolt and lock nut connection; S4. Screw the clamping nut onto the bolt, connecting the internal thread of the clamping nut with the external thread of the locking nut, until the internal thread of the clamping nut presses against the end face pressure plate.

5. A method of using the anti-loosening fastener according to any one of claims 1 to 3, characterized in that, Includes the following steps: S1. Connect the bolt and lock nut; S2. Place the sheet metal sheet and pressure plate on the lock nut, aligning the first screw hole on the sheet metal sheet, end face pressure plate, and lock nut, and aligning the second screw hole on the side pressure plate and lock nut at the same time; S3. Screw in the first and second screws to fix the pressure plate, sheet metal plate and locking nut, and fix the sheet metal plate between the end faces of the pressure plate and the locking nut; S4. Screw the clamping nut onto the bolt, connecting the internal thread of the clamping nut with the external thread of the locking nut, until the internal thread of the clamping nut presses against the end face pressure plate.

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