Nut assembly for sheet metal part

Abstract

The utility model discloses a nut assembly for a sheet metal part, and relates to the field of nut assemblies. The anti-theft bolt comprises a screw rod and an anti-theft nut, the screw rod penetrates through a sheet metal part and is locked and fixed through the anti-theft nut, the outer side of the screw rod is connected with a binding nut, the binding nut abuts against the anti-theft nut, a steel ball locking mechanism is arranged on the inner side of the anti-theft nut and comprises a groove and a steel ball, and the steel ball is arranged in the groove. According to the anti-theft nut, the steel ball is directly placed into the anti-theft nut through the groove of the opening structure in the surface of the anti-theft nut through the anti-theft nut and the binding nut, the limitation of the narrow installation space of a traditional anti-theft nut is thoroughly broken through, an operator can rapidly complete installation of the steel ball without disassembling the nut or with the help of a special tool, and the anti-theft nut is simple in structure and convenient to use. The installation convenience and efficiency are remarkably improved, the installation smoothness is further improved, and meanwhile the anti-theft performance and the installation effectiveness of the nut assembly are further improved in cooperation with limiting abutting connection of the binding nut.

Description

Technical Field

[0001] This utility model relates to the field of nut assemblies, specifically a nut assembly for sheet metal parts. Background Technology

[0002] Nut assemblies are common fastening devices in the mechanical field, consisting of nuts, bolts or screws, and sometimes auxiliary components such as washers and spring washers. Their working principle is to achieve fastening by rotating the nut, which moves it along the axial direction of the bolt or screw, using friction. Nut assemblies come in various types, such as ordinary hexagonal nuts, lock nuts, and cap nuts, to meet different application scenarios.

[0003] The inspection institute has published two publications: CN206770373U, "Anti-theft Nut Assembly and Anti-theft Nut"; and CN202203259U, "Internal Assembly of Anti-theft Nut". Both publications provide detailed descriptions of existing ball-bearing anti-theft nuts. However, a problem exists in actual use: traditionally, when installing anti-theft nuts, steel balls need to be placed inside the nut before tightening. This method suffers from limited space for the steel balls, resulting in poor ease of installation and use. Therefore, the inventor urgently needs to design a nut structure that allows for quick and convenient installation of steel balls, thereby improving the ease of use of anti-theft nuts. Utility Model Content

[0004] Based on this, the purpose of this utility model is to provide a nut assembly for sheet metal parts to solve the technical problem that traditional anti-theft nuts require steel balls to be placed inside before tightening the nut during installation, but the space for placing the steel balls is small, resulting in poor installation convenience.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a nut assembly for sheet metal parts, including a screw and an anti-theft nut. The screw passes through the sheet metal part and is locked and fixed by the anti-theft nut. A fastening nut is connected to the outside of the screw, and the fastening nut abuts against the anti-theft nut. A steel ball locking mechanism is provided on the inside of the anti-theft nut. The steel ball locking mechanism includes a groove and a steel ball. The groove has an open structure on one side, providing a channel for the steel ball to be placed into the groove.

[0006] By adopting the above technical solution, the composite structure of screw, anti-theft nut and fastening nut is used to achieve efficient locking and fixing of sheet metal parts. The steel ball locking mechanism inside the anti-theft nut adopts an open groove, which completely solves the industry pain point of narrow steel ball installation space and inconvenient operation in traditional anti-theft nuts. Operators can quickly put the steel ball into the groove without the need for special tools, which significantly improves the installation efficiency.

[0007] Furthermore, the groove has an open structure on the surface of the anti-theft nut.

[0008] By adopting the above technical solution, the open structure of the groove is directly set on the surface of the anti-theft nut, making the placement path of the steel ball completely visible. Operators can complete the installation of the steel ball without disassembling the nut or using auxiliary tools, which greatly reduces the requirements for installation space and allows the nut assembly to maintain excellent operability in complex assembly environments.

[0009] Furthermore, an elastic element is installed on the inner side of the groove, and a movable block is elastically connected to one side of the elastic element. The movable block is slidably connected to the inner side of the groove.

[0010] By adopting the above technical solution, automatic positioning and locking of steel balls are achieved. When the steel ball is placed in the groove, the elastic element is pressed and drives the movable block to slide along the arc surface, pressing the steel ball evenly to the locking position with the screw. A reliable anti-loosening torque can be formed without manual adjustment, completely eliminating the dependence of traditional anti-theft nuts on installation experience and significantly improving the installation success rate and efficiency.

[0011] Furthermore, one side of the inner wall of the groove has an arc-shaped structure, and the steel ball abuts against one side of the movable block.

[0012] By adopting the above technical solution, the arc-shaped structure of the inner wall of the groove and the sliding cooperation of the movable block optimize the force distribution of the steel ball. The arc-shaped design enables the movable block to push the steel ball evenly under the action of the elastic element, which significantly improves the durability of the locking structure.

[0013] Furthermore, a retaining ring is fixed below the fastening nut, and a slot is provided on the surface of the anti-theft nut at a position opposite to the retaining ring. The slot is inserted into the retaining ring to cover the gap between the anti-theft nut and the fastening nut.

[0014] By adopting the above technical solution, the insert ring below the fastening nut and the slot on the surface of the anti-theft nut form an interlocking structure, which completely covers the connection gap between the two. This not only improves the appearance of the nut assembly, but also effectively prevents external tools from damaging the locking structure through a physical barrier, thus enhancing the anti-tampering capability.

[0015] In summary, the present invention has the following main advantages:

[0016] 1. This utility model uses an anti-theft nut and a fastening nut to directly insert steel balls through the groove of the open structure on the surface of the anti-theft nut, completely breaking through the narrow installation space limitation of traditional anti-theft nuts. Operators can quickly complete the installation of steel balls without disassembling the nut or using special tools, which significantly improves the convenience and efficiency of installation and further enhances the smoothness of installation. At the same time, the limiting and abutting of the fastening nut further enhances the anti-theft performance and installation effectiveness of the nut assembly.

[0017] 2. This utility model uses slots and insert rings to cooperate with the installation of fastening nuts. The insert ring below and the slot on the surface of the anti-theft nut form an interlocking structure, which not only covers the connection gap, but also enhances the anti-tampering capability through physical barriers, and is conducive to further shielding and protecting the inner steel ball locking mechanism. Attached Figure Description

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

[0019] Figure 2 This is a schematic diagram of the exploded structure of this utility model;

[0020] Figure 3 This is a top view cross-sectional structural diagram of the anti-theft nut of this utility model.

[0021] In the diagram: 1. Screw; 2. Anti-theft nut; 3. Fastening nut; 401. Slot; 402. Insert ring; 5. Steel ball locking mechanism; 501. Groove; 502. Elastic element; 503. Moving block; 504. Steel ball. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0023] Example 1:

[0024] A nut assembly for sheet metal parts, such as Figure 1-3 As shown, the device includes a screw 1 and an anti-theft nut 2. The screw 1 passes through the sheet metal part and is locked in place by the anti-theft nut 2. A locking nut 3 is connected to the outside of the screw 1, and the locking nut 3 abuts against the anti-theft nut 2. A steel ball locking mechanism 5 is provided on the inside of the anti-theft nut 2. The steel ball locking mechanism 5 includes a groove 501 and a steel ball 504. The groove 501 has an open structure on one side, allowing the steel ball 504 to be placed into the channel of the groove 501. Through the composite structure of the screw 1, the anti-theft nut 2, and the locking nut 3, efficient locking and fixing of the sheet metal part is achieved. The inner steel ball locking mechanism 5 adopts an open groove 501, which completely solves the industry pain point of narrow installation space and inconvenient operation of traditional anti-theft nuts with steel balls 504. Operators can quickly put the steel balls 504 into the groove 501 without the need for special tools, which significantly improves the installation efficiency. It is especially suitable for sheet metal parts installation scenarios with limited space. At the same time, the abutment design of the fastening nut 3 and the anti-theft nut 2 forms a double locking mechanism, which not only enhances the reliability of the connection, but also further improves the anti-theft performance through physical isolation, effectively preventing external tools from damaging the locking structure.

[0025] See Figure 1 , Figure 2 , Figure 3 The open structure of the groove 501 is set on the surface of the anti-theft nut 2. By directly setting the open structure of the groove 501 on the surface of the anti-theft nut 2, the placement path of the steel ball 504 is completely visible. Operators can complete the installation of the steel ball without disassembling the nut or using auxiliary tools, which greatly reduces the requirements for installation space. This allows the nut assembly to maintain excellent operability in complex assembly environments. At the same time, the open structure reduces the frictional contact between the steel ball 504 and the inner wall of the nut, avoiding the problem of easy jamming in traditional narrow channels, and further improving the smoothness of installation and the service life of the steel ball 504.

[0026] See Figure 1 , Figure 2 , Figure 3 An elastic element 502 is installed inside the groove 501. A movable block 503 is elastically connected to one side of the elastic element 502. The movable block 503 slides inside the groove 501, realizing the automatic positioning and locking of the steel ball 504. When the steel ball is placed into the groove 501, the elastic element 502 is pressed and drives the movable block 503 to slide along the arc surface, uniformly pressing the steel ball 504 to the locking position with the screw 1. A reliable anti-loosening torque can be formed without manual adjustment, completely eliminating the dependence of traditional anti-theft nuts on installation experience, significantly improving the installation success rate and efficiency. At the same time, the elastic self-locking mechanism effectively compensates for the loosening of the connection caused by vibration or thermal expansion by continuously applying pre-tightening force, further enhancing the long-term anti-loosening performance of the nut assembly.

[0027] See Figure 1 , Figure 2 , Figure 3 The inner wall of the groove 501 has an arc-shaped structure on one side, and the steel ball 504 abuts against one side of the movable block 503. The arc-shaped structure of the inner wall of the groove 501 and the sliding fit of the movable block 503 optimize the force distribution of the steel ball 504. The arc-shaped design allows the movable block 503 to push the steel ball 504 evenly under the action of the elastic element 502, which significantly improves the durability of the locking structure. At the same time, the arc-shaped sliding trajectory reduces the frictional resistance between the movable block 503 and the groove 501, so that the steel ball 504 can still maintain a stable locked state under vibration or impact load, which enhances the vibration resistance and anti-loosening ability of the nut assembly.

[0028] Example 2:

[0029] See Figure 1 , Figure 2 , Figure 3A retaining ring 402 is fixed below the fastening nut 3. A slot 401 is provided on the surface of the anti-theft nut 2 opposite to the retaining ring 402. The slot 401 is inserted into the retaining ring 402 to cover the gap between the anti-theft nut 2 and the fastening nut 3. The retaining ring 402 below the fastening nut 3 and the slot 401 on the surface of the anti-theft nut 2 form an interlocking structure, which completely covers the connection gap between the two. This not only improves the appearance of the nut assembly, but also effectively prevents external tools from damaging the locking structure through a physical barrier, enhancing the anti-tampering capability. At the same time, the precise insertion of the retaining ring 402 and the slot 401 achieves axial positioning, further improving the reliability of the connection, and is also conducive to further shielding and protecting the inner steel ball locking mechanism 5.

[0030] The implementation principle of this embodiment is as follows: During installation, firstly, the anti-theft nut 2 is threadedly connected to the screw 1. Then, the steel ball 504 is directly inserted through the groove 501 of the open structure on the surface of the anti-theft nut 2, completely breaking through the limitations of traditional narrow space operation. After the elastic element 502 is pressed, it pushes the movable block 503 to slide along the inner wall of the groove 501 of the arc structure, pressing the steel ball 504 to the locking position, forming a self-locking engagement with the screw 1. Then, the fastening nut 3 is tightened, and the insertion ring 402 below it is precisely inserted into the slot 401 on the surface of the anti-theft nut 2, which not only covers the connection gap, but also enhances the anti-tampering capability through the interlocking structure. This process improves the installation efficiency of the steel ball through the synergistic effect of the open steel ball channel, the elastic self-locking mechanism, and the anti-disassembly plug-in component, while maintaining reliable anti-theft and anti-loosening performance.

[0031] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A nut assembly for sheet metal parts, characterized by: Including screw rod (1), anti-theft nut (2), the screw rod (1) passes through sheet metal parts and is locked and fixed by anti-theft nut (2), the outer side of the screw rod (1) is connected with buckle nut (3), and the buckle nut (3) is abutted with anti-theft nut (2), the inner side of the anti-theft nut (2) is provided with steel ball locking mechanism (5), the steel ball locking mechanism (5) includes recess (501) and steel ball (504), the recess (501) is provided with open structure on the side top, for the passage of steel ball (504) to be placed into recess (501).

2. The nut assembly for sheet metal parts according to claim 1, characterized in that: The open structure of the recess (501) is arranged on the surface of the anti-theft nut (2).

3. The nut assembly for sheet metal parts of claim 1, wherein: The inner side of the recess (501) is provided with elastic member (502), one side of the elastic member (502) is elastically connected with movable block (503), and the movable block (503) is slidably connected on the inner side of the recess (501).

4. The nut assembly for sheet metal parts of claim 1, wherein: The inner wall of the recess (501) is provided with arc surface structure on one side, and the steel ball (504) is abutted with one side of the movable block (503).

5. The nut assembly for sheet metal parts of claim 1, wherein: The lower side of the buckle nut (3) is fixed with the insertion ring (402), the surface of the anti-theft nut (2) is provided with the insertion slot (401) at the position opposite to the insertion ring (402), the insertion slot (401) is inserted with the insertion ring (402), and the gap between the anti-theft nut (2) and the buckle nut (3) is shielded.

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