Lock nut

Abstract

The utility model provides a locknut, which relates to the technical field of nuts, and comprises a nut body, the inner side wall of the nut body is provided with internal threads, a first anti-off clamping block and a second anti-off clamping block are embedded and inserted in the left and right side ends of the nut body, the side ends of the first anti-off clamping block and the second anti-off clamping block are welded with clamping heads, and the first anti-off clamping block and the second anti-off clamping block are connected with the clamping heads. The clamping head extends out to be located on the inner side of the nut body, a limiting column penetrates through the lower end face of the first anti-disengaging clamping block and the lower end face of the second anti-disengaging clamping block, the limiting column is inserted into a limiting groove in the nut body, and the upper end of the limiting column is connected with an elastic piece through an external thread column head. The lock nut solves the problem that in the prior art, a reverse clamping mechanism of a lock nut needs to be used in cooperation with a specific screw to achieve the loosening effect, and consequently the practicability of the lock nut is low.

Description

Technical Field

[0001] This utility model relates to the field of nut technology, specifically to an anti-loosening nut. Background Technology

[0002] Anti-loosening nuts, also known as self-tightening nuts, are a common type of fastening anti-loosening nut. They include mechanical anti-loosening, riveting anti-loosening, friction anti-loosening, and structural anti-loosening methods. A search revealed an existing technology (publication number: CN202221250875.3) for an easy-to-assemble anti-loosening nut. The description states that "the anti-locking mechanism of this utility model includes a retaining ring, multiple positioning feet, and a check spring. The inner diameter of the retaining ring is the same as the inner diameter of the screw connection. The positioning feet are fixedly connected to the retaining ring and cooperate with the positioning holes. The check springs are evenly fixedly connected to the inner wall of the retaining ring. During assembly, the positioning feet are simply fixedly connected to the positioning holes, resulting in accurate positioning, convenient assembly, improved efficiency, and rapid production." However, the anti-loosening nut's anti-loosening mechanism in this existing technology requires specific screws to achieve the loosening effect, leading to its limited practicality. Utility Model Content

[0003] To overcome the shortcomings of the existing technology, a locking nut is provided to solve the problem that the locking mechanism of the locking nut in the existing technology needs to be used in conjunction with a specific screw to achieve the loosening effect, resulting in the low practicality of the locking nut.

[0004] To achieve the above objectives, a lock nut is provided, comprising: a nut body, wherein the inner side wall of the nut body is provided with an internal thread.

[0005] The nut body has a first anti-disengagement block and a second anti-disengagement block embedded in the left and right sides. Both the first and second anti-disengagement blocks have a locking connector welded to their sides. The locking connector extends out and is located inside the nut body. The lower end faces of the first and second anti-disengagement blocks have a limiting post through them. The limiting post is inserted into a limiting groove inside the nut body. The upper end of the limiting post is connected to an elastic element through an external threaded post head.

[0006] Furthermore, a retaining ring is welded to the lower surface of the nut body, and the retaining ring has symmetrical connecting holes on its surface.

[0007] Furthermore, the lower end face of the nut body is provided with two sets of limiting grooves; and the lower end of the limiting grooves is connected to the connecting hole.

[0008] Furthermore, the first anti-disengagement block and the second anti-disengagement block are inserted at an angle into the side wall of the nut body; and the outer ends of the first anti-disengagement block and the second anti-disengagement block are flush with the outer surface of the nut body.

[0009] Furthermore, threaded slots are provided on the inner side of the upper end face of the first and second anti-detachment blocks.

[0010] Furthermore, the upper end of the limiting post is screwed to the threaded slot through an external threaded post head.

[0011] Furthermore, the lower end face of the limiting post is provided with a cross-shaped groove, and the annular side of the external threaded post head is provided with threads.

[0012] Furthermore, the snap-fit ​​connector is located at the vertical spacing of the internal thread.

[0013] The beneficial effect of this utility model is that the anti-loosening nut of this utility model uses a first anti-loosening block, a second anti-loosening block, a locking connector, an elastic element, a limiting post, and an external threaded post to form an anti-loosening structure. The locking connector on the side end of the anti-loosening block presses against the surface of the stud, and the limiting post is screwed into the limiting groove of the anti-loosening nut. This allows the locking connector to restrict the loosening and rotation of the nut, effectively preventing the nut connected to the stud from loosening or being accidentally rotated by external force. It does not require the use of a stud of a specific shape, ensuring that the anti-loosening nut is more firmly screwed onto the surface of the stud, thus improving the practicality of the anti-loosening nut. Attached Figure Description

[0014] Figure 1 This is a front view cross-sectional structural diagram of the anti-loosening nut according to an embodiment of the present utility model.

[0015] Figure 2 This is a side view of the anti-loosening nut according to an embodiment of the present invention.

[0016] Figure 3 This is a schematic diagram of the lower end face structure of the anti-loosening nut according to an embodiment of the present invention.

[0017] Figure 4 This is a front view cross-sectional structural diagram of the anti-detachment block and the limiting post according to an embodiment of the present utility model.

[0018] Figure 5 This is a top view of the anti-detachment block according to an embodiment of the present invention.

[0019] In the diagram: 1. Nut body; 11. Internal thread; 12. Retaining ring; 13. Connecting hole; 14. Limiting groove; 2. First anti-loosening block; 21. Second anti-loosening block; 22. Connector; 23. Threaded groove; 3. Elastic element; 4. Limiting post; 41. Cross-shaped groove; 42. External threaded post head. Detailed Implementation

[0020] 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.

[0021] Reference Figures 1 to 5 As shown, this utility model provides an anti-loosening nut, including: a nut body 1, the inner side wall of which is provided with an internal thread 11.

[0022] The left and right sides of the nut body 1 are fitted with a first anti-disengagement block 2 and a second anti-disengagement block 21. Both the first anti-disengagement block 2 and the second anti-disengagement block 21 are welded with a clamping connector 22. The clamping connector 22 extends out and is located inside the nut body 1. The lower end face of the first anti-disengagement block 2 and the second anti-disengagement block 21 passes through a limit post 4. The limit post 4 is inserted into the limit groove 14 inside the nut body 1. The upper end of the limit post 4 is connected to an elastic element 3 through an external threaded post head 42.

[0023] When using the anti-loosening nut, first screw the nut body 1 into the appropriate position on the stud. Then, insert the first anti-loosening block 2 and the second anti-loosening block 21 into the inner left and right sides of the nut body 1. Using a Phillips screwdriver, insert it into the limiting groove 14 through the connecting hole 13 of the fixing ring 12 and match it with the cross-shaped groove 41 at the lower end of the limiting post 4. Then, rotate the limiting post 4 so that it rotates down and inserts into the limiting groove 14. This will position the first anti-loosening block 2 and the second anti-loosening block 21 in the nut body 1. At this time, the locking joints 22 of the first anti-loosening block 2 and the second anti-loosening block 21 press against the surface of the stud to restrict the loosening and rotation of the nut body 1, thereby preventing the nut connected to the stud from becoming loose or being accidentally rotated by external force.

[0024] In this embodiment, a retaining ring 12 is welded to the lower surface of the nut body 1, and connecting holes 13 are symmetrically formed on the surface of the retaining ring 12. Two sets of limiting grooves 14 are formed on the lower end face of the nut body 1; and the lower end of the limiting grooves 14 is connected to the connecting holes 13.

[0025] In a preferred embodiment, the retaining ring 12 is the outer end face of the nut body 1, and the connecting hole 13 on the surface of the retaining ring 12 facilitates the insertion of a Phillips screwdriver into the limiting groove 14, thereby driving the limiting post 4 to rotate.

[0026] In this embodiment, the first anti-disengagement block 2 and the second anti-disengagement block 21 are inserted at an angle into the side wall of the nut body 1; and the outer ends of the first anti-disengagement block 2 and the second anti-disengagement block 21 are flush with the outer surface of the nut body 1. The clamping connector 22 is inserted at the vertical spacing of the internal thread 11.

[0027] In a preferred embodiment, the first anti-disengagement block 2 and the second anti-disengagement block 21 are inclined at the same angle as the internal thread 11. The insertion of the first anti-disengagement block 2 and the second anti-disengagement block 21 facilitates preventing the locking connector 22 from disengaging from the inside of the nut body 1.

[0028] In this embodiment, the upper inner surface of the first anti-detachment block 2 and the second anti-detachment block 21 is provided with a threaded slot 23. The upper end of the limiting post 4 is screwed to the threaded slot 23 through an external threaded post head 42. The lower end surface of the limiting post 4 is provided with a cross-shaped groove 41, and the annular side of the external threaded post head 42 is provided with threads.

[0029] As a preferred implementation, the cross-shaped groove 41 on the lower end face of the limiting post 4 is easy to match with a Phillips screwdriver, thereby driving the limiting post 4 to rotate, so that the external thread post head 42 is located in the threaded slot hole 23 and rotates upward (rotating upward will move the limiting post 4 out of the limiting slot 14) or downward (rotating upward will insert the limiting post 4 into the limiting slot 14). This effectively prevents the nut connected to the stud from loosening or being accidentally rotated by external force. It does not require the use of a stud of a specific shape, ensuring that the anti-loosening nut is more firmly screwed onto the stud surface.

[0030] This invention effectively solves the problem that the anti-loosening nut in the prior art requires a specific screw to achieve the loosening effect due to the anti-locking mechanism, resulting in low practicality. It efficiently prevents the nut connected to the stud from loosening or being accidentally rotated by external force, without the need for a stud of a specific shape. This ensures that the anti-loosening nut is more firmly screwed onto the stud surface, improving its practicality. It is suitable for anti-loosening nuts.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A lock nut comprising: Nut body (1), wherein the inner sidewall of the nut body (1) is provided with an internal thread (11), characterized in that: The nut body (1) has a first anti-disengagement block (2) and a second anti-disengagement block (21) embedded in the left and right sides. The first anti-disengagement block (2) and the second anti-disengagement block (21) are both welded with a connector (22). The connector (22) extends out and is located inside the nut body (1). The lower end face of the first anti-disengagement block (2) and the second anti-disengagement block (21) passes through a limit post (4). The limit post (4) is inserted into the limit groove (14) inside the nut body (1). The upper end of the limit post (4) is connected to an elastic element (3) through an external threaded post head (42).

2. A lock nut according to claim 1, wherein A retaining ring (12) is welded to the lower surface of the nut body (1), and connecting holes (13) are symmetrically opened on the surface of the retaining ring (12).

3. A lock nut according to claim 2, wherein The lower end face of the nut body (1) is provided with two sets of limiting grooves (14); and the lower end of the limiting groove (14) is connected to the connecting hole (13).

4. A lock nut according to claim 1 wherein, The first anti-detachment block (2) and the second anti-detachment block (21) are inserted into the side wall of the nut body (1) at an angle; and the outer ends of the first anti-detachment block (2) and the second anti-detachment block (21) are flush with the outer surface of the nut body (1).

5. The lock nut of claim 1 wherein, The first anti-detachment block (2) and the second anti-detachment block (21) have threaded slots (23) on the inner side of their upper surfaces.

6. A lock nut according to claim 1 wherein, The upper end of the limiting post (4) is screwed to the threaded slot (23) through the external threaded post head (42).

7. A lock nut according to claim 1 wherein: The lower end face of the limiting post (4) is provided with a cross-shaped groove (41), and the annular side of the external thread post head (42) is provided with threads.

8. A lock nut according to claim 1 wherein, The snap-fit ​​connector (22) is inserted at the upper and lower spacing of the internal thread (11).

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