Special-shaped nut with self-locking anti-loosening structure

Abstract

The utility model relates to the technical field of nuts and bolts, and discloses a special-shaped nut with a self-locking anti-loosening structure, which comprises a screw rod, a stud is fixedly connected to the top end of the screw rod, a first nut is detachably connected to the outer wall of the screw rod through threads, a threaded sleeve is detachably connected to the outer wall of the stud through threads, and a connecting plate is rotatably connected to the outer wall of the threaded sleeve. The connecting plate is connected with the first nut through the fixing assembly, the screw rod is provided with clockwise threads, and the stud is provided with anticlockwise threads. According to the utility model, the first nut is clockwise rotated to the screw rod, and then the sleeve is anticlockwise rotated to the stud, so that the thread bushing drives the connecting plate and the first nut to abut against each other and be tightened, and meanwhile, the fixing block on the connecting plate is fixed in the slot on the first nut; the first nut and the threaded sleeve are mechanically interlocked and connected together, so that the first nut and the threaded sleeve are prevented from loosening, and the stability of the connecting piece is improved.

Description

Technical Field

[0001] This utility model relates to the field of nut and bolt technology, and in particular to a special-shaped nut with a self-locking anti-loosening structure. Background Technology

[0002] In the field of mechanical connections, nuts are important fasteners, and their anti-loosening performance is directly related to the safety and reliability of equipment operation. Traditional nuts are prone to loosening when subjected to dynamic loads or alternating stresses such as vibration, impact, and temperature changes, which can lead to connection failure and even safety accidents.

[0003] Traditional nuts (such as hexagonal nuts) mainly rely on the friction of the thread pair to prevent loosening (such as with spring washers or nylon rings). However, under vibration, impact, or variable load conditions, the friction will decrease due to wear of the thread pair and attenuation of elastic elements (such as fatigue of spring washers), leading to loosening and thus affecting the stability of the fastening between the connecting parts.

[0004] In response to the technical problem that traditional nuts may loosen under vibration and impact, thus affecting the stability of the connecting parts, this application proposes a special-shaped nut with a self-locking anti-loosening structure. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of traditional nuts, which tend to loosen under vibration and impact, thus affecting the stability of the connecting parts. This invention proposes a non-circular nut with a self-locking anti-loosening structure. In this invention, by rotating the first nut clockwise onto the screw and then rotating the sleeve counterclockwise onto the stud, the threaded sleeve drives the connecting plate to tighten against the first nut. Simultaneously, the fixing block on the connecting plate is fixed in the slot on the first nut, mechanically interlocking the first nut and the threaded sleeve together. This prevents the first nut and the threaded sleeve from loosening and improves the stability of the connecting parts.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a non-circular nut with a self-locking anti-loosening structure, comprising a screw rod, a stud fixedly connected to the top end of the screw rod, a first nut detachably connected to the outer wall of the screw rod, a threaded sleeve detachably connected to the outer wall of the stud, a connecting plate rotatably connected to the outer wall of the threaded sleeve, and the connecting plate being connected to the first nut through a fixing component.

[0007] Furthermore, the fixing component includes fixing blocks fixedly connected to both sides of the bottom end of the connecting plate, and slots are provided on both sides of the top end of the first nut, with the fixing blocks matching the shape of the slots.

[0008] Furthermore, slots are provided on both sides of the outer wall of the fixing block, and a block is slidably connected to both sides of the inner wall of the slot, the block and the slot being shaped to match.

[0009] Furthermore, springs are fixedly connected to the opposite ends of the left and right side blocks, and the other ends of the springs are fixedly connected to the inner wall of the first nut.

[0010] Furthermore, the bottom left and right corners of the fixing block are both arc-shaped, and the top corners of the opposite ends of the left and right card blocks are also arc-shaped.

[0011] Furthermore, a second nut is fixedly connected to the outer wall of the threaded sleeve for driving the threaded sleeve to rotate.

[0012] Furthermore, the screw has a clockwise thread, and the stud has a counterclockwise thread.

[0013] This utility model has the following beneficial effects:

[0014] In this invention, by rotating the first nut clockwise onto the screw and then rotating the sleeve counterclockwise onto the stud, the threaded sleeve drives the connecting plate to tighten against the first nut. At the same time, the fixing block on the connecting plate is fixed in the slot on the first nut, so that the first nut and the threaded sleeve are mechanically interlocked together, thereby preventing the first nut and the threaded sleeve from loosening and improving the stability of the connector. Attached Figure Description

[0015] Figure 1 This is a perspective view of an irregularly shaped nut with a self-locking anti-loosening structure proposed in this utility model;

[0016] Figure 2 This is an unfolded view of an irregularly shaped nut with a self-locking anti-loosening structure proposed in this utility model;

[0017] Figure 3 This is a cross-sectional view of the first nut of the irregular-shaped nut with a self-locking anti-loosening structure proposed in this utility model;

[0018] Figure 4 This is a cross-sectional view of the second nut of an irregularly shaped nut with a self-locking anti-loosening structure proposed in this utility model.

[0019] Legend:

[0020] 1. Screw; 2. Stud; 3. First nut; 4. Slot; 5. Locking block; 6. Spring; 7. Threaded sleeve; 8. Second nut; 9. Connecting plate; 10. Fixing block; 11. Slot. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Reference Figures 1-3 This utility model provides an embodiment of an irregularly shaped nut with a self-locking anti-loosening structure, comprising a screw rod 1, a stud 2 fixedly connected to the top end of the screw rod 1, a first nut 3 detachably connected to the outer wall of the screw rod 1, and a threaded sleeve 7 detachably connected to the outer wall of the stud 2. (Refer to...) Figure 4 A connecting plate 9 is rotatably connected to the outer wall of the threaded sleeve 7. A fixing block 10 is fixedly connected to both sides of the bottom end of the connecting plate 9. A slot 4 is opened on both sides of the top of the first nut 3. The fixing block 10 fits the shape of the slot 4. A slot 11 is opened on both sides of the outer wall of the fixing block 10. A locking block 5 is slidably connected to both sides of the inner wall of the slot 4. The locking block 5 fits the shape of the slot 11. A spring 6 is fixedly connected to one opposite end of the left and right locking blocks 5. The other end of the spring 6 is fixedly connected to the inner wall of the first nut 3. The left and right corners of the bottom end of the fixing block 10 are arc-shaped. The top corners of the opposite ends of the left and right locking blocks 5 are arc-shaped. A second nut 8 is fixedly connected to the outer wall of the threaded sleeve 7 to drive the threaded sleeve 7 to rotate. The screw 1 adopts a clockwise thread and the stud 2 adopts a counterclockwise thread.

[0023] Specifically, screw 1 uses a clockwise thread, while stud 2 uses a counterclockwise thread. This causes the first nut 3 and threaded sleeve 7 to rotate in opposite directions. When the first nut 3 and threaded sleeve 7 are tightened together, screw 1 and stud 2 are pulled back within the helical section, while the first nut 3 and threaded sleeve 7 are compressed, forming a longitudinal compression of the threaded connection pair. This ensures that the engaged threads are always subjected to additional pressure and friction. The corner of the locking block 5 is arc-shaped, and the corner of the fixing block 10 is also arc-shaped. This allows the fixing block 10 to directly press the locking block 5 to both sides. An elastic washer can be added between the first nut 3 and the connector during use.

[0024] Working principle: In use, first pass the screw 1 through the fixing hole on the connector, then pass the first nut 3 through the stud 2, align it with the screw 1, and rotate it clockwise on the screw 1 to tighten the first nut 3 with the fastener. Then align the threaded sleeve 7 with the stud 2 and rotate the second nut 8. The second nut 8 drives the threaded sleeve 7 to rotate counterclockwise on the stud 2, while simultaneously aligning the fixing block 10 at the bottom of the connecting plate 9 with the slot 4 on the first nut 3. The second nut 8 will continue to drive the threaded sleeve 7 downward until the connecting plate 9 presses against the first nut 3, thus... The first nut 3 and the threaded sleeve 7 are tightened together, and at the same time, the fixing block 10 will enter the slot 4. The fixing block 10 will push the locking block 5 in the slot 4 to both sides, so that the locking block 5 compresses the spring 6. When the fixing block 10 moves to the bottom of the slot 4, the spring 6 will rebound the locking block 5, so that the locking block 5 enters the locking groove 11 on the fixing block 10, connecting the first nut 3 to the connecting plate 9, thereby connecting the first nut 3 to the threaded sleeve 7. The first nut 3 and the threaded sleeve 7 rotate in opposite directions, thereby strengthening the anti-loosening property of the first nut 3 and the threaded sleeve 7.

[0025] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A special-shaped nut with a self-locking anti-loosening structure, characterized in that, Includes a screw (1), a stud (2) fixedly connected to the top of the screw (1), a first nut (3) detachably connected to the outer wall of the screw (1), a threaded sleeve (7) detachably connected to the outer wall of the stud (2), a connecting plate (9) rotatably connected to the outer wall of the threaded sleeve (7), and the connecting plate (9) is connected to the first nut (3) through a fixing component.

2. The irregularly shaped nut with a self-locking anti-loosening structure according to claim 1, characterized in that: The fixing component includes fixing blocks (10) fixedly connected to both sides of the bottom end of the connecting plate (9). The first nut (3) has slots (4) on both sides of its top end. The fixing blocks (10) and slots (4) are shaped to fit together.

3. A special-shaped nut with a self-locking anti-loosening structure according to claim 2, characterized in that: The outer walls of the fixing block (10) are provided with slots (11) on both sides, and the inner walls of the slot (4) are slidably connected with blocks (5), and the blocks (5) are in shape to match the slots (11).

4. A special-shaped nut with a self-locking anti-loosening structure according to claim 3, characterized in that: The left and right sides of the locking blocks (5) are each fixedly connected to a spring (6) at one end opposite to the other end, and the other end of the spring (6) is fixedly connected to the inner wall of the first nut (3).

5. A special-shaped nut with a self-locking anti-loosening structure according to claim 3, characterized in that: The bottom left and right corners of the fixed block (10) are both arc-shaped, and the top corners of the left and right side of the card blocks (5) are both arc-shaped.

6. A special-shaped nut with a self-locking anti-loosening structure according to claim 1, characterized in that: The outer wall of the threaded sleeve (7) is fixedly connected to a second nut (8) for driving the threaded sleeve (7) to rotate.

7. A special-shaped nut with a self-locking anti-loosening structure according to claim 1, characterized in that: The screw (1) has a clockwise thread, and the stud (2) has a counterclockwise thread.

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