Self-locking type anti-loosening locking strip and using method thereof

Abstract

The invention discloses a self-locking type anti-loosening locking strip and a using method thereof.The locking strip comprises a rotating head, a sliding block limiting base, a sliding block, a screw, a moving block, a top block and a fixed block, the sliding block is arranged in the sliding block limiting base, one end of the rotating head extends into the sliding block limiting base and is rotationally connected with the sliding block, and the other end of the rotating head is rotationally connected with the screw. One end of the screw rod extends into the sliding block limiting seat and is rotationally connected with the sliding block, the other end of the screw rod penetrates through the movable block and then is in threaded connection with the fixed block, the screw rod is in threaded connection with the movable block, and the movable block and the fixed block are both arranged in an inner cavity of the top block and are in sliding connection with the top block. A tool can be used for controlling locking and unlocking of the locking strip through the rotating head, the locking state is stably kept through the arrangement of the sliding block and the elastic piece, and the possibility that the locking strip is loosened in the high-frequency vibration environment is effectively avoided. The device is simple in structure, is prevented from being influenced by an electromagnetic environment due to a pure mechanical structure design, and can adapt to most aerospace use environments.

Description

Technical Field

[0001] This invention belongs to the field of locking device technology, and particularly relates to a self-locking anti-loosening locking strip and its usage method. Background Technology

[0002] In most aerospace applications, electronic equipment operates in complex environments with stringent requirements for module mounting standards within the chassis. These standards must meet environmental testing standards such as GJB150.16A-2009 and GJB150.18A-2009. Currently available locking strips, which use screws to secure standard modules within the chassis, are prone to loosening in high-frequency vibration environments. Therefore, for applications requiring high-frequency vibration, a locking strip that ensures stability during use and is easy to use and adjust is needed. Summary of the Invention

[0003] To solve the above-mentioned technical problems, the present invention provides a self-locking anti-loosening locking strip and its usage method.

[0004] The present invention is achieved through the following technical solutions.

[0005] This invention provides a self-locking anti-loosening locking strip, comprising a rotating head, a slider limiting seat, a slider, a screw, a moving block, a top block, and a fixed block. The slider is disposed within the slider limiting seat. One end of the rotating head extends into the slider and is rotatably connected to it. One end of the screw extends into the slider limiting seat and is rotatably connected to it. The other end of the screw passes through the moving block and is threadedly connected to the fixed block. The moving block and the fixed block are both disposed within the cavity of the top block and are slidably connected to it.

[0006] Preferably, a first limiting ring is provided on the screw, a first retaining tooth is provided on one side of the first limiting ring, and a second retaining tooth is provided on the other side of the first limiting ring.

[0007] Preferably, the screw is fitted with an elastic element, which is located inside the slider limit seat.

[0008] Preferably, one end of the rotating head is provided with a rotating groove, and the other end is provided with a second limiting ring, with a third locking tooth provided on the outer side of the second limiting ring.

[0009] Preferably, the slider has a mounting hole, and a fourth retaining tooth is provided at the bottom of the mounting hole.

[0010] Preferably, a first slider is provided on one side of the movable block, and the first slider is triangular.

[0011] Preferably, the inner cavity of the top block is provided with a first sliding groove, and the two ends of the first sliding groove are provided with second sliding grooves.

[0012] Preferably, a rubber pad layer is provided on one side of the top block.

[0013] Preferably, a second slider is provided on the outside of the fixing block, and the second slider is provided with an inclined surface.

[0014] A method for using a self-locking anti-loosening locking strip includes the following steps: S1: When the self-locking anti-loosening locking strip is in the initial unlocked state, use a tool to insert into the rotating groove of the rotating head, press down and rotate. After pressing down, the slider moves towards the moving block, the elastic element is compressed, so that the fourth tooth in the slider no longer engages with the second tooth, and the first tooth engages with the third tooth, causing the rotating head to drive the screw to rotate. Under the action of the threaded connection, the screw rotates, causing the moving block to move towards the fixed block, and pushes the top block to move in that direction, so that the overall length of the self-locking anti-loosening locking strip increases, thus achieving the function of fixing the chassis module. S2: When the tool inserted into the rotating head is released, the slider is pushed towards the rotating head by the elastic element under the action of the elastic element restoring its elongation, and the rotating head moves in the same direction. The first tooth no longer engages with the third tooth, and the fourth tooth engages with the second tooth, so that the screw cannot rotate. The overall length of the self-locking anti-loosening locking strip can be maintained, and it is in the locked state at this time. S3: When unlocking is required, use a tool to insert into the rotating groove of the rotating head and press down while rotating in the opposite direction to step S1. After pressing down, the slider moves towards the moving block, so that the fourth locking tooth in the slider no longer engages with the second locking tooth, and the first locking tooth engages with the third locking tooth. The screw rotates and drives the moving block and the top block to move towards the rotating head, so that the overall length of the self-locking anti-loosening locking strip becomes shorter and restores the initial state of not being locked.

[0015] The beneficial effects of this invention are as follows: This invention allows for the use of a tool to control the locking and unlocking of the locking strip via a rotating head. The slider and elastic element ensure a stable locked state, effectively preventing the locking strip from loosening in high-frequency vibration environments. This application features a simple structure, and its purely mechanical design avoids the influence of electromagnetic environments, making it suitable for most aerospace applications. Attached Figure Description

[0016] Figure 1 This is an exploded view of the present invention; Figure 2 This is a schematic diagram of the structure of the present invention; Figure 3 This is a schematic diagram of the present invention; Figure 4 This is a schematic diagram of the structure of the rotating head of the present invention; Figure 5 This is a schematic diagram of the structure of the rotating head of the present invention; Figure 6 This is a schematic diagram of the slider of the present invention; Figure 7 This is a schematic diagram of the screw structure of the present invention; Figure 8 This is a schematic diagram of the screw structure of the present invention; Figure 9 This is a schematic diagram of the structure of the movable block of the present invention; Figure 10 This is a schematic diagram of the top block structure of the present invention; Figure 11 This is a schematic diagram of the structure of the fixing block of the present invention; Figure 12 This is a schematic diagram showing the disengagement of the rotating head and the screw in this invention; Figure 13 This is a schematic diagram of the engagement between the rotating head and the screw of the present invention; Figure 14 This is a schematic diagram showing the disengagement of the slider and screw in this invention; Figure 15 This is a schematic diagram of the engagement between the slider and the screw in this invention; In the diagram: 1-Rotating head, 11-Rotating groove, 12-Second limiting ring, 13-Third locking tooth, 2-Slider limiting seat, 3-Slider, 31-Mounting hole, 32-Fourth locking tooth, 4-Screw, 41-First limiting ring, 42-First locking tooth, 43-Second locking tooth, 5-Elastic element, 6-Moving block, 61-First slider, 7-Rubber pad layer, 8-Top block, 81-First sliding groove, 82-Second sliding groove, 9-Fixing block, 91-Second slider, 92-Inclined surface. Detailed Implementation

[0017] The technical solution of the present invention is further described below, but the scope of protection is not limited to what is described.

[0018] Example: like Figures 1 to 15 As shown, a self-locking anti-loosening locking strip includes a rotating head 1, a slider limiting seat 2, a slider 3, a screw 4, a moving block 6, a top block 8, and a fixed block 9. The slider 3 is disposed inside the slider limiting seat 2. One end of the rotating head 1 extends into the slider and is rotatably connected to the slider 3. One end of the screw 4 extends into the slider limiting seat 2 and is rotatably connected to the slider 3. The other end of the screw 4 passes through the moving block 6 and is threadedly connected to the fixed block 9. The moving block 6 and the fixed block 9 are both disposed in the inner cavity of the top block 8 and are slidably connected to the top block 8.

[0019] A first limiting ring 41 is provided on the screw 4. The first limiting ring 41 is placed in the mounting hole 31 to prevent the screw 4 from coming out of the mounting hole 31. A first retaining tooth 42 is provided on one side of the first limiting ring 41, and a second retaining tooth 43 is provided on the other side of the first limiting ring 41.

[0020] The screw 4 is sleeved with an elastic element 5, which is located in the inner cavity of the slider limit seat 2. The elastic element 5 can push the slider 3 to slide within the slider limit seat 2 to unlock or lock the locking strip.

[0021] One end of the rotating head 1 is provided with a rotating groove 11, the shape of which matches the shape of an internal hex wrench, so that the rotating head 1 can be rotated by using the wrench. The other end is provided with a second limiting ring 12, which is placed in the inner cavity of the slider limiting seat 2 to prevent the rotating head 1 from coming out of the inner cavity. A third retaining tooth 13 is provided on the outer side of the second limiting ring 12 for engaging with the first retaining tooth 42, so that the rotating head 1 can drive the screw 4 to rotate.

[0022] The slider 3 is provided with a mounting hole 31, and a fourth retaining tooth 32 is provided at the bottom of the mounting hole 31 for engaging with the second retaining tooth 43 to prevent the screw 4 from rotating.

[0023] A first slider 61 is provided on one side of the movable block 6. The first slider 61 is triangular. This arrangement facilitates the movable block 6 to push the top block 8 to move, or to be pushed by the top block 8.

[0024] The top block 8 has a first sliding groove 81 in its inner cavity, and a second sliding groove 82 is provided at both ends of the first sliding groove 81. The second sliding groove 82 is inclined, which facilitates the top block 8 to push the moving block 6 or the fixed block 9 to move.

[0025] A rubber pad 7 is bonded to one side of the top block 8. The rubber pad 7 has a certain degree of softness and plays a buffering role between the locking strip and the module in the chassis where it is installed.

[0026] A second slider 91 is provided on the outer side of the fixed block 9. An inclined surface 92 is provided on the second slider 91 to facilitate the fixed block 9 to push the top block 8 to move, or to be pushed by the top block 8.

[0027] A method for using a self-locking anti-loosening locking strip includes the following steps: S1: When the self-locking anti-loosening locking strip is in the initial state of being unlocked, use a tool to insert into the rotating groove 11 of the rotating head 1, press down and rotate. After pressing down, the slider 3 moves towards the moving block 6, the elastic element 5 is compressed, so that the fourth tooth 32 in the slider 3 no longer engages with the second tooth 43, and the first tooth 42 engages with the third tooth 13, so that the rotating head 1 drives the screw 4 to rotate. Under the action of the threaded connection, the screw 4 rotates, causing the moving block 6 to move towards the fixed block 9, and pushes the top block 8 to move in that direction, so that the overall length of the self-locking anti-loosening locking strip increases, thereby achieving the function of fixing the chassis module. S2: When the tool inserted into the rotating head 1 is released, under the action of the elastic element 5 restoring its elongation, the slider 3 is pushed towards the rotating head 1 by the elastic element 5, and the rotating head 1 moves in the same direction. The first locking tooth 42 no longer engages with the third locking tooth 13, and the fourth locking tooth 32 engages with the second locking tooth 43, so that the screw 4 cannot rotate. The overall length of the self-locking anti-loosening locking strip can be maintained, and it is in the locked state at this time. S3: When unlocking is required, use a tool to insert into the rotating groove 11 of the rotating head 1 and press down and rotate in the opposite direction to step S1. At this time, after pressing down, the slider 3 moves towards the moving block 6, so that the fourth locking tooth 32 in the slider 3 no longer engages with the second locking tooth 43, and the first locking tooth 42 engages with the third locking tooth 13. The screw 4 rotates and drives the moving block 6 and the top block 8 to move towards the rotating head 1, so that the overall length of the self-locking anti-loosening locking strip becomes shorter and restores the initial state of not being locked.

Claims

1. A self-locking anti-loosening locking strip, characterized in that: The device includes a rotating head (1), a slider limiting seat (2), a slider (3), a screw (4), a moving block (6), a top block (8), and a fixed block (9). The slider (3) is located inside the slider limiting seat (2). One end of the rotating head (1) extends into the slider and is rotatably connected to the slider (3). One end of the screw (4) extends into the slider limiting seat (2) and is rotatably connected to the slider (3). The other end of the screw (4) passes through the moving block (6) and is threadedly connected to the fixed block (9). The screw (4) is threadedly connected to the moving block (6). The moving block (6) and the fixed block (9) are both located in the inner cavity of the top block (8) and are slidably connected to the top block (8).

2. The self-locking anti-loosening locking strip as described in claim 1, characterized in that: A first limiting ring (41) is provided on the screw (4), a first locking tooth (42) is provided on one side of the first limiting ring (41), and a second locking tooth (43) is provided on the other side of the first limiting ring (41).

3. The self-locking anti-loosening locking strip as described in claim 1, characterized in that: The screw (4) is fitted with an elastic element (5), which is located in the inner cavity of the slider limit seat (2).

4. The self-locking anti-loosening locking strip as described in claim 1, characterized in that: The rotating head (1) has a rotating groove (11) at one end and a second limiting ring (12) at the other end. A third locking tooth (13) is provided on the outside of the second limiting ring (12).

5. A self-locking anti-loosening locking strip as described in claim 1, characterized in that: The slider (3) is provided with a mounting hole (31), and a fourth locking tooth (32) is provided at the bottom of the mounting hole (31).

6. A self-locking anti-loosening locking strip as described in claim 1, characterized in that: A first slider (61) is provided on one side of the movable block (6), and the first slider (61) is triangular.

7. A self-locking anti-loosening locking strip as described in claim 1, characterized in that: The top block (8) has a first groove (81) inside its cavity, and a second groove (82) is provided at both ends of the first groove (81).

8. A self-locking anti-loosening locking strip as described in claim 1, characterized in that: A rubber pad layer (7) is provided on one side of the top block (8).

9. A self-locking anti-loosening locking strip as described in claim 1, characterized in that: A second slider (91) is provided on the outside of the fixed block (9), and an inclined surface (92) is provided on the second slider (91).

10. A method of using a self-locking anti-loosening locking strip as described in any one of claims 1-9, characterized in that, Includes the following steps: S1: When the self-locking anti-loosening locking strip is in the initial state of not being locked, use a tool to insert into the rotating groove (11) of the rotating head (1) to press down and rotate. After pressing down, the slider (3) moves towards the moving block (6), the elastic element (5) is compressed, so that the fourth tooth (32) in the slider (3) no longer meshes with the second tooth (43), the first tooth (42) meshes with the third tooth (13), so that the rotating head (1) drives the screw (4) to rotate. Under the action of the threaded connection, the screw (4) rotates, causing the moving block (6) to move towards the fixed block (9), and pushes the top block (8) to move in that direction, so that the overall length of the self-locking anti-loosening locking strip increases, thereby achieving the function of fixing the chassis module. S2: When the tool inserted into the rotating head (1) is released, the slider (3) is pushed towards the rotating head (1) by the elastic element (5) under the action of the elastic element (5) to restore its elongation, and the rotating head (1) moves in the same direction. The first tooth (42) no longer engages with the third tooth (13), and the fourth tooth (32) engages with the second tooth (43), so that the screw (4) cannot rotate. The overall length of the self-locking anti-loosening locking strip can be maintained. At this time, it is in the locked state. S3: When unlocking is required, use a tool to insert into the rotating groove (11) of the rotating head (1) and press down and rotate in the opposite direction to step S1. At this time, after pressing down, the slider (3) moves towards the moving block (6), so that the fourth tooth (32) in the slider (3) no longer engages with the second tooth (43), and the first tooth (42) engages with the third tooth (13). The screw (4) rotates and drives the moving block (6) and the top block (8) to move towards the rotating head (1), so that the overall length of the self-locking anti-loosening locking strip becomes shorter and restores the initial state of not being locked.

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