Lock nut assembly

Abstract

The utility model discloses a locknut assembly which comprises a nut body, a locknut is further arranged on the nut body in a matched mode, a locknut containing cavity is formed in the nut body, the locknut is completely or partially contained in the locknut containing cavity, a frustum part is arranged on the locknut, and the frustum part is provided with a conical surface. The outer side wall of the frustum part is used for being correspondingly matched with the inner cavity wall of the anti-loosening containing cavity, at least one expansion joint is formed in the anti-loosening nut, and the expansion joint is a gap penetrating up and down. By utilizing a double-nut structure, particularly combining with the design of the locknut, and utilizing the acting force of the expansion joint and the inclined plane, the overall contraction and clasping are realized, and the anti-loosening performance is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of anti-loosening nuts, in particular to a anti-loosening nut assembly. Background Art

[0002] With the rapid development of mechanical devices in my country, many require replaceable mechanisms for assembly. Bolts and nuts are the most widely used removable fasteners. The use of removable fasteners can significantly reduce the difficulty of mechanical device production and improve the efficiency of mechanical device repair.

[0003] In actual applications, bolt and nut fastening devices are often used in high-frequency vibration conditions. Ordinary bolts and nuts can become loose under such conditions, posing a significant risk to production and construction. Utility Model Content

[0004] In view of the above problems, the present invention aims to provide a locking nut assembly, which can realize overall shrinkage and tightening by utilizing the force of expansion joints and inclined surfaces, thereby improving the locking performance.

[0005] The technical problem solved by the present invention can be achieved by adopting the following technical solutions:

[0006] A locking nut assembly includes a nut body, the nut body is also equipped with a locking nut, an locking accommodating cavity is provided in the nut body, the locking nut is fully or partially accommodated in the locking accommodating cavity, a frustum is provided on the locking nut, the outer wall of the frustum is used to correspond to the inner wall of the locking accommodating cavity, and at least one expansion joint is provided on the locking nut, and the expansion joint is a gap running through the upper and lower parts.

[0007] A first internal thread portion is further provided in the nut body, and a second internal thread portion is provided in the anti-loosening nut. The first internal thread portion and the second internal thread portion are internal threads of the same size.

[0008] The anti-loosening nut is further provided with a nut seat, the nut seat is exposed outside the nut body, and a resistance surface is provided on the nut seat.

[0009] When the frustum portion is completely embedded in the anti-loosening accommodation cavity, the abutment surface abuts against the end surface of one end of the nut body.

[0010] The anti-loosening accommodating cavity is a truncated cone cavity structure.

[0011] The frustum portion is further provided with at least one slotted seam, which is a blind seam.

[0012] The inner wall of the anti-loosening accommodating cavity and / or the outer wall of the frustum portion are provided with tooth-shaped patterns.

[0013] Compared with the prior art, the present invention has the following beneficial effects: the present invention utilizes a double nut structure, especially in combination with an anti-loosening nut design, utilizes the force of the expansion joint and the inclined surface to achieve overall contraction and tightening, thereby improving the anti-loosening performance.

[0014] The features of the present invention can be clearly understood by referring to the drawings and the following detailed description of preferred embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The overall structure of the utility model is shown in FIG. Figure 1 ;

[0016] Figure 2 This is a schematic diagram of the overall decomposition structure of the utility model;

[0017] Figure 3 The overall cross-sectional structure of the utility model is shown as follows Figure 1 ;

[0018] Figure 4 The overall structure of the utility model is shown in FIG. Figure 2 ;

[0019] Figure 5 This is a schematic diagram of the cross-sectional structure of the nut body of the present invention;

[0020] Figure 6 This is a schematic diagram of the anti-loosening nut structure of the utility model;

[0021] Figure 7 The overall cross-sectional structure of the utility model is shown as follows Figure 2 . DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below with reference to specific illustrations.

[0023] Combine Figures 1 to 7 As shown, the utility model discloses an anti-loosening nut assembly, including a nut body 100, on which an anti-loosening nut 200 is matched. An anti-loosening accommodating cavity 120 is provided in the nut body 100, and the nut body 100 and the anti-loosening nut 200 are used to match the bolts for fastening.

[0024] In one of the preferred embodiments, the anti-loosening nut 200 is partially accommodated in the anti-loosening accommodating cavity 120, and a frustum portion 210 is provided on the anti-loosening nut 200. The lower part of the frustum portion 210 is a nut seat 220, and the nut seat 220 is exposed outside the nut body 100. The outer wall of the frustum portion 210 is used to correspond to the inner wall of the anti-loosening accommodating cavity 120. At least one expansion joint 230 is provided on the anti-loosening nut 200, and the expansion joint 230 is a gap that runs through the top and bottom. The structure of the expansion joint 230 is optimized and designed to run through the top and bottom, so that there is deformation space in the anti-loosening nut 200.

[0025] In combination with the above, a first internal threaded portion 110 is further provided in the nut body 100, and a second internal threaded portion 210 is provided in the anti-loosening nut 200. The first internal threaded portion 110 and the second internal threaded portion 210 are internal threads of the same size; when the nut body 100 is twisted by external force, due to the interference between the frustum portion 210 in the anti-loosening nut 200 and the anti-loosening accommodating cavity 120, as the twisting is continued, the nut body 100 will drive the anti-loosening nut 200 to rotate. As it contacts the surface of the workpiece and is continuously twisted, the deformation space formed between the frustum portion 210 and the anti-loosening accommodating cavity 120 due to the action of the oblique force and the expansion joint 230 enables the anti-loosening nut 200 to cover and tighten the internal bolt.

[0026] In a specific structure, a contact surface 221 is provided on the nut seat 220 . When the frustum portion 210 is completely embedded in the anti-loosening accommodating cavity 120 , the contact surface 221 contacts and cooperates with an end surface of the nut body.

[0027] In a specific structure, the anti-loosening accommodating cavity 120 is a truncated cone cavity structure.

[0028] In one of the preferred embodiments, the frustum portion 210 is further provided with at least one slotted seam 211, which is a blind seam; wherein, preferably, there are two slotted seams 211, which are arranged at intervals. By utilizing the slotted seam 211 structure, as the frustum portion 210 and the anti-loosening accommodating cavity 120 continue to contact each other, the force between the inclined surfaces is utilized to make the slotted seams 211 form a deformation internal lock, thereby increasing the clamping effect on the internal bolts.

[0029] In one of the preferred embodiments, a tooth-shaped pattern 300 is provided on the inner wall of the anti-loosening cavity 120 and / or the outer wall of the frustum portion 210. The tooth-shaped pattern 300 is used to increase the friction between the frustum portion 210 and the anti-loosening cavity 120, improve the inclined surface force, and make the fit between the nut body 100 and the anti-loosening nut 200 more compact.

[0030] In one embodiment, the anti-loosening nut 200 is completely accommodated in the anti-loosening accommodating cavity 120 , the anti-loosening nut 200 does not have a nut seat, and the anti-loosening nut 200 is completely embedded in the nut body 100 .

[0031] In combination with the above, the nut body 100 and the lock nut 200 are preferably hexagonal nuts.

[0032] The utility model utilizes a double nut structure, especially combines the anti-loosening nut design, utilizes the expansion joint and the inclined surface force, realizes the overall shrinkage and tightening, and improves the anti-loosening performance.

[0033] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Any simple modification, equivalent change or modification made to the above embodiment based on the technical principle of the present invention still falls within the scope of the technical solution of the present invention.

Claims

1. A locking nut assembly, comprising a nut body, characterized in that: The nut body is also equipped with an anti-loosening nut, and an anti-loosening accommodating cavity is provided in the nut body. The anti-loosening nut is fully or partially accommodated in the anti-loosening accommodating cavity. The anti-loosening nut is provided with a frustum portion, and the outer wall of the frustum portion is used to correspond to the inner wall of the anti-loosening accommodating cavity. The anti-loosening nut is provided with at least one expansion joint, and the expansion joint is a gap that passes through the upper and lower parts.

2. The anti-loosening nut assembly according to claim 1, characterized in that: A first internal thread portion is further provided in the nut body, and a second internal thread portion is provided in the anti-loosening nut. The first internal thread portion and the second internal thread portion are internal threads of the same size.

3. The anti-loosening nut assembly according to claim 2, characterized in that: The anti-loosening nut is further provided with a nut seat, the nut seat is exposed outside the nut body, and a resistance surface is provided on the nut seat.

4. The anti-loosening nut assembly according to claim 3, characterized in that: When the frustum portion is completely embedded in the anti-loosening accommodation cavity, the abutment surface abuts against the end surface of one end of the nut body.

5. The anti-loosening nut assembly according to claim 1, characterized in that: The anti-loosening accommodating cavity is a truncated cone cavity structure.

6. The anti-loosening nut assembly according to claim 1, characterized in that: The frustum portion is further provided with at least one slotted seam, which is a blind seam.

7. The anti-loosening nut assembly according to any one of claims 1 to 6, characterized in that: The inner wall of the anti-loosening accommodating cavity and / or the outer wall of the frustum portion are provided with tooth-shaped patterns.

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