Lock nut assembly

Abstract

The utility model discloses a locknut assembly which comprises a part, a screw hole is formed in the part in a penetrating mode, a bolt rod is arranged in the screw hole in a penetrating mode, and the bottom end of the bolt rod is integrally and fixedly connected with a bolt head. According to the locknut assembly, when two parts need to be fixedly connected, the disc spring is arranged on the bolt rod in a sleeving mode, the bolt rod is inserted into the screw hole, the nut gasket and the nut are arranged at the other end of the screw hole in a sleeving mode, the nut gasket drives the positioning block to enter the positioning groove, and then the nut is tightened; the nut drives the second anti-loosening helical teeth to move to the dislocation position of the first anti-loosening helical teeth through deformation of the disc spring, so that the first anti-loosening helical teeth abut against the second anti-loosening helical teeth, relative rotation between the nut gasket and a part is avoided through the positioning block and the positioning groove, reverse rotation of the nut is avoided through the first anti-loosening helical teeth and the second anti-loosening helical teeth, and the anti-loosening effect is achieved. And therefore, looseness caused by reverse rotation of the nut can be effectively avoided, and the stability of part connection is effectively guaranteed.

Description

Technical Field

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

[0002] Nut assemblies are mainly used to fasten two parts with through holes; this type of connection is called a bolted connection.

[0003] The patent application, with publication number CN221896953U and publication date October 25, 2024, entitled "An Anti-Loosening Toothed Structure, Washer, Nut, and Bolt Assembly," describes a toothed structure comprising multiple stepped teeth. A first and second tooth surface of a triangular frustum ABCDEF is formed by cutting away from the surface of the washer, nut, or other parts that mate with the bolt. The edges AD and BE of the triangular frustum ABCDEF intersect at vertex O, the angle ∠AOB is 360° / N, and N≥2. The thread pitch of the bolt corresponding to the washer or nut is S, the maximum axial clearance between the bolt and nut is L, and the length of the side BC of the top triangle ABC of the triangular frustum ABCDEF, L1≥L+S / N; the length of the side EF of the bottom triangle DEF of the triangular frustum ABCDEF, L2≥L+S / N. Based on the above data, the tooth depth of the second tooth surface reaches a certain depth, effectively causing the washer to block the nut, thereby enhancing the anti-loosening capability of the washer, nut, and bolt assembly.

[0004] Existing anti-loosening nut assemblies, while achieving a certain loosening structure through the formation of the first and second tooth surfaces, have been found in practical use to prevent relative rotation between the washer and the nut. However, slippage can occur between the washer and the surface of the part to be tightened. When the nut is under force, the nut and washer will rotate, causing the nut to loosen again, making it inconvenient to use. Therefore, we propose an anti-loosening nut assembly to solve the problems mentioned above. Utility Model Content

[0005] 1. The technical problem to be solved by the utility model:

[0006] The purpose of this invention is to provide an anti-loosening nut assembly to solve the problems currently existing in the market as described in the background.

[0007] 2. Technical Solution:

[0008] To achieve the above objectives, this utility model provides the following technical solution: an anti-loosening nut assembly, comprising a component having a threaded hole through it, and a bolt rod passing through the threaded hole, wherein...

[0009] The bottom end of the bolt rod is integrally fixed with a bolt head. A disc spring is sleeved on the bolt rod between the bolt head and the part. A nut washer is sleeved on the bolt rod on the side of the part away from the bolt head. The part has positioning grooves equidistantly opened on the side corresponding to the nut washer.

[0010] The nut washer is fixedly connected to the bottom of the positioning groove with a positioning block. A nut is threaded onto the bolt rod on the side of the nut washer away from the part. The nut washer is fixedly connected to the first anti-loosening helical teeth at equal intervals on the side of the nut washer close to the nut. The nut is fixedly connected to the bottom of the first anti-loosening helical teeth with a second anti-loosening helical tooth.

[0011] Preferably, both the disc spring and the nut washer are annular, and the outer diameter of the disc spring and the nut washer is larger than the inner diameter of the screw hole.

[0012] Preferably, the positioning groove and the positioning block are distributed in a ring at equal intervals on the part and the nut washer.

[0013] Preferably, the positioning block is a cylinder, and the outer diameter of the positioning block matches the inner diameter of the positioning groove.

[0014] Preferably, the slopes of the first anti-loosening helical tooth and the second anti-loosening helical tooth face opposite directions.

[0015] 3. Beneficial effects:

[0016] Compared with the prior art, the anti-loosening nut assembly of this utility model has the following specific features:

[0017] (1) When it is necessary to fix two parts together, put the disc spring on the bolt rod, insert the bolt rod into the bolt hole, put the nut washer and nut on the other end of the bolt hole, so that the nut washer drives the positioning block into the positioning groove, and then tighten the nut. The deformation of the disc spring causes the nut to drive the second anti-loosening helical tooth to move to the misalignment of the first anti-loosening helical tooth, so that the first anti-loosening helical tooth and the second anti-loosening helical tooth abut against each other. The positioning block and the positioning groove prevent the nut washer and the parts from rotating relative to each other. The nut is prevented from rotating in reverse by the first anti-loosening helical tooth and the second anti-loosening helical tooth, thus effectively preventing the nut from rotating in reverse and causing loosening, and effectively ensuring the stability of the connection of the parts. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a three-dimensional structural diagram of the nut washer of this utility model;

[0020] Figure 3 This is a three-dimensional structural diagram of the part of this utility model;

[0021] Figure 4 This utility model Figure 1 A magnified schematic diagram of the structure at point A in the middle.

[0022] In the diagram: 1. Part; 2. Screw hole; 3. Bolt rod; 4. Bolt head; 5. Disc spring; 6. Nut washer; 7. Positioning groove; 8. Positioning block; 9. Nut; 10. First anti-loosening helical tooth; 11. Second anti-loosening helical tooth. Detailed Implementation

[0023] To facilitate understanding of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0024] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "page", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0026] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," and "equipped with" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. Example

[0027] Please see Figures 1 to 4An anti-loosening nut assembly includes a part 1, on which a threaded hole 2 is formed, and a bolt shank 3 passes through the threaded hole 2.

[0028] The bottom end of the bolt rod 3 is integrally fixed with a bolt head 4. A disc spring 5 is sleeved on the bolt rod 3 between the bolt head 4 and the part 1. A nut washer 6 is sleeved on the bolt rod 3 on the side of the part 1 away from the bolt head 4. Positioning grooves 7 are equidistantly opened on the side of the part 1 corresponding to the nut washer 6.

[0029] The nut washer 6 is fixedly connected to the bottom of the positioning groove 7 with a positioning block 8. The nut washer 6 is threadedly connected to the bolt rod 3 on the side away from the part 1 with a nut 9. The nut washer 6 is fixedly connected to the side of the nut 9 with a first anti-loosening helical tooth 10 at equal intervals. The nut 9 is fixedly connected to the bottom of the first anti-loosening helical tooth 10 with a second anti-loosening helical tooth 11.

[0030] When it is necessary to fix two parts 1 together, the disc spring 5 is put on the bolt rod 3, so that the bolt rod 3 is inserted into the bolt hole 2. The nut washer 6 and nut 9 are put on the other end of the bolt hole 2, so that the nut washer 6 drives the positioning block 8 into the positioning groove 7. Then the nut 9 is tightened. The deformation of the disc spring 5 causes the nut 9 to drive the second anti-loosening helical tooth 11 to move to the misalignment of the first anti-loosening helical tooth 10, so that the first anti-loosening helical tooth 10 and the second anti-loosening helical tooth 11 abut against each other. The positioning block 8 and the positioning groove 7 prevent the nut washer 6 and part 1 from rotating relative to each other. The nut 9 is prevented from rotating in reverse by the first anti-loosening helical tooth 10 and the second anti-loosening helical tooth 11, thus effectively preventing the nut 9 from rotating in reverse and causing loosening, and effectively ensuring the stability of the connection of part 1.

[0031] Please see Figures 1 to 4 Both the disc spring 5 and the nut washer 6 are annular, and the outer diameter of the disc spring 5 and the nut washer 6 is larger than the inner diameter of the screw hole 2. The positioning groove 7 and the positioning block 8 are annularly distributed at equal intervals on the part 1 and the nut washer 6. When the nut washer 6 is in use, the nut washer 6 drives the positioning block 8 into the positioning groove 7. Through the positioning groove 7 and the positioning block 8 with matching dimensions, the relative rotation between the nut washer 6 and the part 1 is prevented after the nut 9 is tightened.

[0032] Please see Figures 1 to 4 The positioning block 8 is a cylinder, and the outer diameter of the positioning block 8 matches the inner diameter of the positioning groove 7. The slopes of the first anti-loosening helical tooth 10 and the second anti-loosening helical tooth 11 face opposite directions. When the nut 9 rotates in the tightening direction, the slopes of the first anti-loosening helical tooth 10 and the second anti-loosening helical tooth 11 fit together, allowing the nut 9 to rotate normally. When the nut 9 is subjected to force and rotates in the opposite direction, the first anti-loosening helical tooth 10 abuts against the second anti-loosening helical tooth 11, which can prevent the nut 9 from rotating in the opposite direction.

[0033] Working principle: When using this anti-loosening nut assembly, if... Figures 1 to 4As shown, firstly, when it is necessary to fix two parts 1 together, the disc spring 5 is put on the bolt rod 3, so that the bolt rod 3 is inserted into the bolt hole 2. The nut washer 6 and nut 9 are put on the other end of the bolt hole 2, so that the nut washer 6 drives the positioning block 8 into the positioning groove 7. Then the nut 9 is tightened. The deformation of the disc spring 5 causes the nut 9 to drive the second anti-loosening helical tooth 11 to move to the misalignment of the first anti-loosening helical tooth 10, so that the first anti-loosening helical tooth 10 and the second anti-loosening helical tooth 11 abut against each other. The positioning block 8 and the positioning groove 7 prevent the nut washer 6 and part 1 from rotating relative to each other. The nut 9 is prevented from rotating in reverse by the first anti-loosening helical tooth 10 and the second anti-loosening helical tooth 11, thus effectively preventing the nut 9 from rotating in reverse and causing loosening, effectively ensuring the stability of the connection of part 1.

[0034] When the nut washer 6 is used, it causes the nut washer 6 to drive the positioning block 8 into the positioning groove 7. Through the matching positioning groove 7 and positioning block 8, the relative rotation between the nut washer 6 and part 1 is prevented after the nut 9 is tightened. When the nut 9 rotates in the tightening direction, the inclined surfaces of the first anti-loosening helical tooth 10 and the second anti-loosening helical tooth 11 are engaged, allowing the nut 9 to rotate normally. When the nut 9 is subjected to force and rotates in the opposite direction, the first anti-loosening helical tooth 10 abuts against the second anti-loosening helical tooth 11, which can prevent the nut 9 from rotating in the opposite direction.

[0035] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0036] Although the present invention 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 invention should be included within the protection scope of the present invention.

Claims

1. A locking nut assembly, characterized in that, Includes a component (1), on which a screw hole (2) is passed through, and a bolt rod (3) passes through the interior of the screw hole (2), wherein, The bottom end of the bolt rod (3) is integrally fixed with a bolt head (4). A disc spring (5) is sleeved on the bolt rod (3) between the bolt head (4) and the part (1). A nut washer (6) is sleeved on the bolt rod (3) on the side of the part (1) away from the bolt head (4). A positioning groove (7) is equidistantly opened on the side of the part (1) corresponding to the nut washer (6). The nut washer (6) is fixedly connected to the bottom of the positioning groove (7) with a positioning block (8). The nut washer (6) is threaded onto the bolt rod (3) on the side away from the part (1) with a nut (9). The nut washer (6) is fixedly connected to the side of the nut (9) with a first anti-loosening helical tooth (10) at equal intervals. The nut (9) is fixedly connected to the bottom of the first anti-loosening helical tooth (10) with a second anti-loosening helical tooth (11).

2. The anti-loosening nut assembly according to claim 1, characterized in that: Both the disc spring (5) and the nut washer (6) are annular, and the outer diameter of the disc spring (5) and the nut washer (6) is larger than the inner diameter of the screw hole (2).

3. The anti-loosening nut assembly according to claim 1, characterized in that: The positioning groove (7) and positioning block (8) are distributed in a ring at equal intervals on the part (1) and the nut washer (6).

4. The anti-loosening nut assembly according to claim 1, characterized in that: The positioning block (8) is a cylinder, and the outer diameter of the positioning block (8) matches the inner diameter of the positioning groove (7).

5. The anti-loosening nut assembly according to claim 1, characterized in that: The slopes of the first anti-loosening helical tooth (10) and the second anti-loosening helical tooth (11) face opposite directions.

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