Locking nut with metal block

Abstract

The utility model discloses a locking nut with a metal block, which comprises a nut body, the nut body is hollowed out along the axis of the nut body, a connecting block is slidably connected to the hollowed-out position of the nut body, a threaded groove is formed in the connecting block, a sliding groove is formed in the outer wall of the nut body, and the metal block is arranged in the sliding groove. Inserting blocks are fixedly connected to the inner walls of the two sets of arc-shaped connecting plates, the positions of the inserting blocks correspond to the positions of the two sets of inserting grooves, the inserting blocks are inserted into the adjacent inserting grooves, the two sets of connecting plates are connected through an elastic mechanism, and the connecting blocks are made of metal materials. The arc-shaped connecting plate capable of sliding along the sliding groove is arranged and matched with the spring in the elastic mechanism to push the wedge-shaped face of the inserting block to be tightly attached to the inserting groove, direct abrasion of the nut body is avoided, the connecting plate can be independently replaced after being abraded, and the nut does not need to be wholly replaced. The problem that a traditional small-diameter nut cannot be disassembled due to the fact that the outer surface is rounded is solved, and the maintenance cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of locking nut technology, specifically a locking nut with a metal block. Background Technology

[0002] In the fields of machinery manufacturing, electronic equipment and precision instruments, small-diameter metal lock nuts are widely used for fastening small-diameter bolts due to their small size and strong adaptability. They achieve anti-loosening through friction or mechanical structure, ensuring the stability of threaded connections under dynamic conditions such as vibration and impact.

[0003] The existing publication number CN222963157U discloses a small-diameter metal locking nut. This device, through the cooperation of the nut, screw, and threaded groove, allows for quick and convenient removal of the outer casing from the nut body. However, due to the limited size of the small-diameter nut, the contact area between its outer surface and tools such as wrenches is small. During repeated tightening or disassembly, the outer surface of the nut is prone to localized wear due to friction with the tools. Over time, the edges and corners of the nut gradually become rounded, and the force becomes uneven, making it difficult for tools to engage. In severe cases, it may even be impossible to unscrew the bolt, forcing the replacement of the entire connecting part, increasing maintenance costs and downtime. Therefore, this utility model proposes a locking nut with a metal block to solve the above problems. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies where small-diameter nuts are prone to wear on their outer surface, are difficult to disassemble, and require complete replacement, this invention incorporates a replaceable arc-shaped connecting plate, a square anti-rotation structure with metal connecting blocks, and an elastic mechanism. This allows for individual replacement and stable fastening of worn parts, avoiding the difficulties of complete replacement and disassembly, and reducing maintenance costs.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a locking nut with a metal block, comprising a nut body, the nut body being hollowed out along its axis, a connecting block being slidably connected to the hollowed-out portion of the nut body, a threaded groove being formed in the connecting block, a sliding groove being formed on the outer wall of the nut body, the inner wall of the sliding groove being circular, two sets of arc-shaped connecting plates being slidably connected in the sliding groove, the inner wall of the connecting plate being in close contact with the inner wall of the sliding groove, two sets of slots being formed on the hollowed-out inner wall of the nut body, and inserting blocks being fixedly connected to the inner walls of the two sets of arc-shaped connecting plates, the positions of which correspond to the positions of the two sets of slots and are inserted into adjacent slots, the two sets of connecting plates being connected to each other by an elastic mechanism, and the connecting blocks being made of metal material;

[0008] The elastic mechanism is used to improve the stability of the plug insertion in the slot.

[0009] Preferably, the elastic mechanism includes a slide rod, and the ends of the two sets of connecting plates are provided with positioning grooves through the nut body axis. The slide rod is slidably connected in the two sets of positioning grooves, and a spring is sleeved on the outer wall of the slide rod. The two ends of the spring are respectively fixedly connected to the ends of the two sets of connecting plates.

[0010] Preferably, both ends of the slide rod are threaded, and a fixing nut is threadedly connected to each thread.

[0011] Preferably, the corresponding position of the hollow inner wall of the nut body is a suitable square, and the outer wall of the connecting block is in close contact with the hollow inner wall of the nut body.

[0012] Preferably, the end of the insert block away from the connecting plate is wedge-shaped, the inner wall of the slot is wedge-shaped at the corresponding position, and the wedge-shaped surface of the insert block is in contact with the wedge-shaped surface of the slot.

[0013] (III) Beneficial Effects

[0014] Compared with the prior art, the present invention provides a locking nut with a metal block, which has the following advantages:

[0015] 1. By setting an arc-shaped connecting plate that can slide along the groove, and cooperating with the spring in the elastic mechanism to push the wedge-shaped surface of the insert block to fit tightly into the slot, it not only avoids direct wear of the nut body, but also allows for individual replacement after the connecting plate wears out, without the need to replace the entire nut. This solves the problem of traditional small-diameter nuts being unable to be disassembled due to the rounding of the outer surface, and reduces maintenance costs.

[0016] 2. By setting a metal connecting block that matches the square structure of the nut body, the wear resistance and anti-rotation stability of the threaded connection are enhanced. At the same time, the engagement of the wedge-shaped insert with the slot and the limiting of the elastic mechanism by the sliding rod and the fixed nut ensure that the tool does not slip when it engages with the connecting plate, improving the smoothness of operation and extending the service life of the nut. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a locking nut with a metal block proposed in this utility model;

[0018] Figure 2 for Figure 1 Structural diagram;

[0019] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure of the middle nut body;

[0020] Figure 4 for Figure 3 Schematic diagram of the structure at the connecting plate;

[0021] In the diagram: 1. Nut body; 2. Connecting block; 3. Threaded groove; 4. Slide groove; 5. Slot; 6. Insert block; 7. Connecting plate; 8. Slide rod; 9. Spring; 10. Fixing nut; 11. Positioning groove. Detailed Implementation

[0022] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0023] This utility model provides a technical solution for a locking nut with a metal block:

[0024] Please see Figure 1-4 A locking nut with a metal block includes a nut body 1, which is hollowed out along its axis. A connecting block 2 is slidably connected to the hollowed-out part of the nut body 1. A threaded groove 3 is opened in the connecting block 2. A sliding groove 4 is opened on the outer wall of the nut body 1. The inner wall of the sliding groove 4 is circular. Two sets of arc-shaped connecting plates 7 are slidably connected in the sliding groove 4. The inner wall of the connecting plate 7 is in close contact with the inner wall of the sliding groove 4. Two sets of slots 5 are opened on the hollowed-out inner wall of the nut body 1. Insert blocks 6 are fixedly connected to the inner walls of the two sets of arc-shaped connecting plates 7, and their positions correspond to the positions of the two sets of slots 5 and are inserted into adjacent slots 5. The two sets of connecting plates 7 are connected to each other by an elastic mechanism. The connecting block 2 is made of metal material.

[0025] The flexible mechanism is used to improve the stability of the plug 6 when it is inserted into the slot 5;

[0026] Furthermore, the use of metal material in the connecting block 2 enhances the wear resistance of the overall structure. The two sets of arc-shaped connecting plates 7, as force-bearing components in contact with the tool, can reduce the direct wear on the outer wall of the nut body 1 and avoid the inability to disassemble due to rounded edges. The cooperation between the insert block 6 and the slot 5 ensures that the connecting plate 7 is securely installed, facilitating later maintenance and replacement.

[0027] The elastic mechanism includes a slide rod 8, and two sets of connecting plates 7 are provided with positioning grooves 11 through the ends along the axis of the nut body 1. The slide rod 8 is slidably connected in the two sets of positioning grooves 11. A spring 9 is sleeved on the outer wall of the slide rod 8, and the two ends of the spring 9 are fixedly connected to the ends of the two sets of connecting plates 7 respectively.

[0028] Furthermore, the elasticity of the spring 9 allows the arc-shaped connecting plate 7 to always fit against the inner wall of the slide groove 4, ensuring that the insert 6 is tightly inserted into the slot 5, preventing the connecting plate 7 from becoming loose and causing unstable tool engagement, reducing wear caused by vibration, and solving the problem of traditional nuts easily slipping after long-term use.

[0029] Both ends of the slide rod 8 are threaded, and each threaded part is connected to a fixing nut 10;

[0030] Furthermore, the fixing nut 10 can limit the sliding range of the slide bar 8 in the positioning groove 11, prevent the spring 9 from being excessively deformed or failing, ensure the long-term stable operation of the elastic mechanism, prevent the arc-shaped connecting plate 7 from disengaging from the slide groove 4, ensure that the tool can always effectively engage the connecting plate 7, and reduce the difficulty of disassembly.

[0031] The corresponding position of the hollow inner wall of the nut body 1 is a matching square, and the outer wall of the connecting block 2 is in close contact with the hollow inner wall of the nut body 1.

[0032] Furthermore, the square structure prevents relative rotation between the connecting block 2 and the nut body 1, avoiding additional stress and wear on the arc-shaped connecting plate 7. At the same time, it enhances the load-bearing capacity of the connecting block 2, and the metal material improves the overall structural strength and extends the service life.

[0033] The end of the insert 6 away from the connecting plate 7 is wedge-shaped, and the corresponding position on the inner wall of the slot 5 is wedge-shaped, and the wedge-shaped surface of the insert 6 is in contact with the wedge-shaped surface of the slot 5.

[0034] Furthermore, the wedge-shaped surface fit can enhance the locking force between the insert 6 and the slot 5 under the elastic force of the spring 9, prevent the arc-shaped connecting plate 7 from shifting due to frequent operation, ensure that the outer wall of the connecting plate 7 always maintains an intact force-bearing surface, avoid the corners from being rounded, and facilitate repeated engagement and disassembly of tools.

[0035] In practical use, the working principle of this utility model is as follows:

[0036] First, the connecting block 2 engages with the nut body 1. The square outer wall of the connecting block 2 slides against the square inner wall of the hollowed-out part of the nut body 1, forming a stable anti-rotation structure and preventing additional friction caused by relative rotation. The metal connecting block 2 engages with the bolt through the threaded groove 3, enhancing the wear resistance and load-bearing capacity of the threaded connection and providing a reliable foundation for overall fastening.

[0037] At this time, the two sets of arc-shaped connecting plates 7 are installed in the slide groove 4 of the nut body 1 through the elastic mechanism. The spring 9 is in a naturally extended state, pushing the connecting plate 7 to unfold along the slide groove 4, so that the wedge-shaped surface of the insert block 6 on the inner wall fits tightly with the wedge-shaped surface of the slot 5, ensuring that the connecting plate 7 is firmly fixed and will not loosen due to vibration. The slide rod 8 passes through the positioning groove 11 of the connecting plate 7, and the fixing nuts 10 at both ends limit its sliding range, preventing the spring 9 from being excessively deformed and ensuring the long-term stable operation of the elastic mechanism.

[0038] Due to the wedge-shaped fit between the insert 6 and the slot 5 and the continuous elastic force of the spring 9, the connecting plate 7 always fits tightly against the slide groove 4, ensuring a stable tool engagement and preventing slippage, thus ensuring smooth operation.

[0039] If the arc-shaped connecting plate 7 wears out after prolonged use, the operator can pull both sets of connecting plates 7 outwards, pressing the tension spring 9 to make the slide rod 8 slide along the positioning groove 11. The insert block 6 will then disengage from the slot 5, allowing the worn connecting plate 7 to be removed from the slide groove 4 for replacement. After replacement, the connecting plate 7 is released, the spring 9 returns to its original position, pushing the insert block 6 back into the slot 5. The wedge-shaped surfaces then fit tightly again, restoring the locking state. This eliminates the need to replace the entire nut, reducing maintenance costs and downtime.

[0040] The replaceable arc-shaped connecting plate 7 bears the friction of tools, and the wear-resistant metal connecting block 2 and the square anti-rotation structure effectively solve the problem of traditional small-diameter nuts being difficult to disassemble and requiring overall replacement due to wear on the outer surface. At the same time, the elastic mechanism and wedge-shaped fit ensure stability and ease of operation during long-term use.

[0041] The above are merely specific embodiments of this utility model, but the technical features of this utility model are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on this utility model to solve essentially the same technical problems and achieve essentially the same technical effects are all covered within the protection scope of this utility model.

Claims

1. A locking nut with metal insert comprising a nut body (1) characterized in that: The nut body (1) is hollowed out along its axis. A connecting block (2) is slidably connected to the hollowed-out part of the nut body (1). A threaded groove (3) is opened in the connecting block (2). A sliding groove (4) is opened on the outer wall of the nut body (1). The inner wall of the sliding groove (4) is circular. Two sets of arc-shaped connecting plates (7) are slidably connected in the sliding groove (4). The inner wall of the connecting plate (7) is in close contact with the inner wall of the sliding groove (4). Two sets of slots (5) are opened on the hollowed-out inner wall of the nut body (1). Inserts (6) are fixedly connected to the inner walls of the two sets of arc-shaped connecting plates (7). The positions correspond to the positions of the two sets of slots (5) and are inserted into the adjacent slots (5). The two sets of connecting plates (7) are connected to each other through an elastic mechanism. The connecting block (2) is made of metal material. The elastic mechanism is used to improve the stability of the plug (6) when it is inserted into the slot (5).

2. A locking nut with metal insert according to claim 1, characterized in that: The elastic mechanism includes a slide rod (8), and two sets of connecting plates (7) have positioning grooves (11) extending through the ends of the nut body (1) along the axis. The slide rod (8) is slidably connected in the two sets of positioning grooves (11). A spring (9) is sleeved on the outer wall of the slide rod (8), and the two ends of the spring (9) are fixedly connected to the ends of the two sets of connecting plates (7) respectively.

3. A locking nut with metal insert according to claim 2, characterized in that: Both ends of the slide rod (8) are threaded, and a fixing nut (10) is threaded to each thread.

4. A locking nut with a metal block according to claim 3, characterized in that: The corresponding position of the hollow inner wall of the nut body (1) is a square, and the outer wall of the connecting block (2) is in close contact with the hollow inner wall of the nut body (1).

5. A locking nut with a metal block according to claim 4, characterized in that: The end of the insert (6) away from the connecting plate (7) is wedge-shaped, and the inner wall of the slot (5) is wedge-shaped at the corresponding position, and the wedge-shaped surface of the insert (6) is in contact with the wedge-shaped surface of the slot (5).

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