Locking nut with limiting structure

Abstract

The utility model discloses a locking nut with a limit structure, which comprises side cavities arranged on two sides of an inner cavity of the nut, arc-shaped steel is arranged in inner cavities of the side cavities, round holes are arranged on two sides of the top of the nut, inner cavities of the round holes are communicated with the side cavities, the middle of one side of the arc-shaped steel extends to the inner cavities of the round holes, and the middle of the other side of the arc-shaped steel extends to the inner cavities of the round holes. A movable pin is installed in an inner cavity of the round hole, and an internal thread is arranged at the top of the inner cavity of the round hole. The nut is screwed on the surface of the screw rod, then the movable pins are sequentially inserted into the inner cavities of the two round holes, and then the movable pins are rotated, so that the movable pins move towards the deep positions of the inner cavities of the round holes due to matching of the internal threads and the external threads, the surfaces of the movable pins abut against the arc-shaped steel, and the arc-shaped steel deforms towards the inner side to abut against the surface of the screw rod; therefore, the purposes that the deformable arc-shaped steel is adopted on the inner side of the nut to abut against the surface of the screw rod, the rotation of the nut is limited, and the locking effect is improved are achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of nuts, and in particular relates to a locking nut with a limiting structure. Background Art

[0002] Locking nut is a kind of nut widely used in machinery and other industries. Its working principle is to use the friction between the nut and the bolt for self-locking. However, the reliability of this self-locking will be reduced under dynamic load. In some important occasions, we will take some anti-loosening measures to ensure the reliability of nut locking.

[0003] During use, the locking nut can be rotated with a wrench to unscrew it from the screw. In order to further enhance the locking effect of the locking nut, we have designed a locking nut with a limiting structure. A deformable arc-shaped steel is used on the inner side of the nut to press against the surface of the screw, limiting the rotation of the nut and improving the locking effect. Utility Model Content

[0004] The purpose of the utility model is to provide a locking nut with a limiting structure, which has the advantages of using deformable arc steel on the inner side of the nut to press against the surface of the screw, limiting the rotation of the nut and improving the locking effect, so as to solve the above-mentioned background technical problems.

[0005] The technical solution of the utility model for solving the above-mentioned technical problems is as follows: a locking nut with a limiting structure, which includes side cavities opened on both sides of the inner cavity of the nut, the inner cavity of the side cavity is provided with arc-shaped steel, circular holes are opened on both sides of the top of the nut, the inner cavity of the circular hole is connected with the side cavity, the middle part of one side of the arc-shaped steel extends to the inner cavity of the circular hole, the inner cavity of the circular hole is installed with a movable pin, the top of the inner cavity of the circular hole is provided with an internal thread, the top of the surface of the movable pin is provided with an external thread adapted to the internal thread, and the surface of the movable pin is against the outer side of the arc-shaped steel.

[0006] Preferably, a cross groove is provided on the top of the movable pin.

[0007] Preferably, the bottom of the movable pin surface is in the shape of a frustum.

[0008] Preferably, anti-slip grooves are provided on both sides of the inner cavity of the side cavity, and anti-slip strips matching the anti-slip grooves are provided at both ends of the arc steel.

[0009] Preferably, a lower gasket integrally formed with the nut is provided at the bottom of the nut.

[0010] The beneficial effects of the utility model are:

[0011] 1. The utility model screws a nut onto the surface of the screw, then inserts a movable pin into the inner cavity of the two circular holes in sequence, and then rotates the movable pin. Due to the cooperation between the internal thread and the external thread, the movable pin moves deep into the inner cavity of the circular hole, so that the surface of the movable pin abuts against the arc steel, causing the arc steel to deform inwardly and abut against the surface of the screw, thereby limiting the rotation of the nut. This can achieve the purpose of using the deformable arc steel on the inner side of the nut to abut against the surface of the screw, thereby limiting the rotation of the nut and improving the locking effect.

[0012] 2. The utility model provides a cross groove, and the user can use a cross screwdriver to operate the movable pin to rotate, which provides convenience for the rotation of the movable pin;

[0013] 3. The utility model adopts a frustum-shaped setting. After the movable pin is inserted into the inner cavity of the circular hole, the frustum-shaped surface will contact the arc-shaped steel. When the user operates the movable pin to move downward, there will be no obstruction, which facilitates the movement of the movable pin.

[0014] The utility model uses the anti-slip groove and the anti-slip strip in combination, so that the arc-shaped steel placed in the inner cavity of the side cavity will not easily fall out of the inner cavity of the side cavity, and can play a limiting role for the arc-shaped steel. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The above and / or other advantages of the present invention will become clearer and easier to understand through the detailed description made in conjunction with the following drawings. These drawings are only illustrative and do not limit the present invention, wherein:

[0016] Figure 1 This is a three-dimensional schematic diagram of an embodiment of the utility model;

[0017] Figure 2 This is a three-dimensional cross-sectional schematic diagram of an embodiment of the present invention;

[0018] Figure 3 This is a three-dimensional cross-sectional schematic diagram of a nut body according to an embodiment of the present invention;

[0019] Figure 4 This is an embodiment of the utility model Figure 2 A partial enlarged view of point A.

[0020] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0021] 1. Nut, 2. Lower gasket, 3. Side cavity, 4. Arc steel, 5. Round hole, 6. Movable pin, 7. Internal thread, 8. External thread, 9. Cross groove, 10. Frustum, 11. Anti-slip groove, 12. Anti-slip strip. DETAILED DESCRIPTION

[0022] Hereinafter, an embodiment of a locking nut with a limiting structure according to the present invention will be described with reference to the accompanying drawings.

[0023] Figure 1-4 The present invention shows a locking nut with a limiting structure according to an embodiment of the present invention, which includes side cavities 3 provided on both sides of the inner cavity of the nut 1, a lower gasket 2 integrally formed with the nut 1 is provided at the bottom of the nut 1, an arc-shaped steel 4 is provided in the inner cavity of the side cavity 3, anti-slip grooves 11 are provided on both sides of the inner cavity of the side cavity 3, and anti-slip strips 12 adapted to the anti-slip grooves 11 are provided at both ends of the arc-shaped steel 4. Through the coordinated use of the anti-slip grooves 11 and the anti-slip strips 12, the arc-shaped steel 4 placed in the inner cavity of the side cavity 3 will not easily fall out of the inner cavity of the side cavity 3, and the arc-shaped steel 4 can be limited. Circular holes 5 are provided on both sides of the top of the nut 1, and the inner cavity of the circular hole 5 is connected to the side cavity 3. The middle part of one side of the arc-shaped steel 4 extends to the circular hole 5. The inner cavity of the hole 5, the inner cavity of the circular hole 5 is installed with a movable pin 6, the top of the inner cavity of the circular hole 5 is provided with an internal thread 7, the top of the surface of the movable pin 6 is provided with an external thread 8 compatible with the internal thread 7, the surface of the movable pin 6 is against the outside of the arc steel 4, and the top of the movable pin 6 is provided with a cross groove 9. Through the setting of the cross groove 9, the user can operate the movable pin 6 to rotate by a cross screwdriver, which provides convenience for the rotation of the movable pin 6. The bottom of the surface of the movable pin 6 is a frustum 10. Through the setting of the frustum 10, after the movable pin 6 is inserted into the inner cavity of the circular hole 5, the surface of the frustum 10 will contact the arc steel 4, and there will be no obstruction when the user operates the movable pin 6 to move downward, which facilitates the movement of the movable pin 6.

[0024] Working principle: When the present invention is used, the nut 1 is screwed onto the surface of the screw, and then the movable pin 6 is inserted into the inner cavity of the two circular holes 5 in turn. Then, a cross screwdriver is inserted into the inner cavity of the cross groove 9 to rotate the movable pin 6. Due to the cooperation between the internal thread 7 and the external thread 8, the movable pin 6 moves deep into the inner cavity of the circular hole 5, and the cone shape 10 causes the arc steel 4 to deform inwardly until the surface of the movable pin 6 presses against the arc steel 4, and the inner side of the arc steel 4 is deformed and extends to the inner cavity of the nut 1, so that the arc steel 4 is deformed inwardly and presses against the surface of the screw, thereby limiting the rotation of the nut 1 and improving the locking effect.

[0025] To sum up: the locking nut with a limiting structure is achieved by screwing the nut 1 onto the surface of the screw, and then inserting the movable pin 6 into the inner cavity of the two circular holes 5 in turn, and then rotating the movable pin 6. Due to the cooperation between the internal thread 7 and the external thread 8, the movable pin 6 moves deep into the inner cavity of the circular hole 5, so that the surface of the movable pin 6 presses against the arc steel 4, so that the arc steel 4 deforms inwardly and presses against the surface of the screw, limiting the rotation of the nut 1, and thus achieving the purpose of using deformable arc steel on the inner side of the nut to press against the surface of the screw, limiting the rotation of the nut, and improving the locking effect.

Claims

1. A locking nut with a limiting structure, characterized in that: The invention comprises side cavities (3) provided on both sides of the inner cavity of the nut (1), wherein the inner cavity of the side cavity (3) is provided with arc-shaped steel (4), and circular holes (5) are provided on both sides of the top of the nut (1), wherein the inner cavity of the circular hole (5) is connected with the side cavity (3), and the middle part of one side of the arc-shaped steel (4) extends to the inner cavity of the circular hole (5), and a movable pin (6) is installed in the inner cavity of the circular hole (5), and the top of the inner cavity of the circular hole (5) is provided with an internal thread (7), and the top of the surface of the movable pin (6) is provided with an external thread (8) adapted to the internal thread (7), and the surface of the movable pin (6) is against the outer side of the arc-shaped steel (4).

2. The locking nut with a limiting structure according to claim 1, characterized in that: A cross groove (9) is provided on the top of the movable pin (6).

3. The locking nut with a limiting structure according to claim 2, characterized in that: The bottom of the surface of the movable pin (6) is in a frustum shape (10).

4. The locking nut with a limiting structure according to claim 3, characterized in that: Anti-slip grooves (11) are provided on both sides of the inner cavity of the side cavity (3), and anti-slip strips (12) adapted to the anti-slip grooves (11) are provided on both ends of the arc-shaped steel (4).

5. The locking nut with a limiting structure according to claim 4, characterized in that: The bottom of the nut (1) is provided with a lower gasket (2) integrally formed with the nut (1).

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