Anti-theft bolt assembly

Abstract

The anti-theft bolt assembly includes a bolt body and a nut sleeve. By setting the nut sleeve and through the buckle connection of the buckle end and the buckle groove, the stable connection of the nut sleeve and the nut part is realized. The design of the cross groove facilitates normal tightening or loosening operation with a cross screwdriver and the like. After the nut sleeve is installed in place, the anti-theft structure can cover the cross groove, effectively preventing unauthorized disassembly behavior, increasing the safety of the bolt assembly and avoiding the possibility of illegal disassembly. This design not only improves the anti-theft performance of the bolt assembly, but also ensures its convenience in normal use.

Description

Technical Field

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

[0002] A bolt is a mechanical part, a cylindrical threaded fastener used with a nut. It consists of a head and a shank (a cylinder with external threads), and is used to fasten two parts with through holes. Traditional bolt assemblies are often easily disassembled by unauthorized personnel, posing a safety hazard. Summary of the Invention

[0003] In view of this, the present invention provides an anti-theft bolt assembly.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] An anti-theft bolt assembly includes a bolt body and a nut sleeve. The bolt body has a threaded portion and a nut portion. The nut sleeve is fitted onto the nut portion and is detachably connected to the nut portion. A groove is formed by the recessed edge of the end face of the nut portion near the threaded portion. A snap-fit ​​end is formed by the protrusion of the inner wall of the nut sleeve near the bolt body. The snap-fit ​​end extends into the groove and snaps into the nut portion. An anti-theft structure is provided on the nut sleeve. A cross groove is formed on the end face of the nut portion away from the threaded portion, and the anti-theft structure covers the cross groove.

[0006] Preferably, the nut sleeve is cylindrical in shape, and the anti-theft structure includes an annular support portion disposed on the inner wall of the nut sleeve and a rotatable cover disposed on the annular support portion. A rotating groove is formed between the annular support portion and the inner wall of the nut sleeve, and one side of the cover extends into the rotating groove. The cover and the inner wall of the rotating groove are fitted with a clearance.

[0007] Preferably, the cover is arranged in an arc shape, and a cover limiting part is formed on the inner wall of the rotating groove away from the annular support. The cover limiting part limits the axial position of the cover in the rotating groove.

[0008] Preferably, the cover body has a cross groove formed by an inward concave arc surface on the side away from the annular support.

[0009] Preferably, the cover limiting part is arranged in a ring structure, the width of the cover limiting part is smaller than the width of the cover support part, and a cover ring groove corresponding to the cover limiting part is opened on the cover, and the cover limiting part extends into the cover ring groove and connects with the cover.

[0010] Preferably, both the nut sleeve and the bolt body are made of stainless steel.

[0011] Preferably, the cover is made of stainless steel.

[0012] The beneficial effects of this utility model are as follows: by setting a nut sleeve and connecting it to the snap-fit ​​groove through a snap-fit ​​end, a stable connection between the nut sleeve and the nut is achieved. The cross-shaped groove design facilitates normal tightening or loosening operations using tools such as Phillips screwdrivers. When the nut sleeve is installed in place, the anti-theft structure covers the cross-shaped groove, effectively preventing unauthorized disassembly, increasing the security of the bolt assembly, and avoiding the possibility of illegal disassembly. This design not only improves the anti-theft performance of the bolt assembly but also ensures its convenience during normal use. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Appendix Figure 1 This is a schematic diagram of the structure of this utility model. Detailed Implementation

[0015] 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.

[0016] The present invention will now be further described with reference to the accompanying drawings.

[0017] This utility model provides the following technical solution:

[0018] As attached Figure 1As shown, this utility model discloses an anti-theft bolt assembly, including a bolt body 1 and a nut sleeve 2. The bolt body 1 has a threaded portion 3 and a nut portion 4. The nut sleeve 2 is sleeved on the nut portion 4, and the nut sleeve 2 and the nut portion 4 are detachably connected. A groove 5 is formed inwardly on the edge of the end face of the nut portion 4 near the threaded portion 3. A snap-fit ​​end 6 is formed on the inner wall of the nut sleeve 2 near the bolt body 1. The snap-fit ​​end 6 extends into the groove 5 and snaps into the nut portion 4. An anti-theft structure 7 is provided on the nut sleeve 2. A cross groove 8 is formed on the end face of the nut portion 4 away from the threaded portion 3, and the anti-theft structure 7 covers the cross groove 8. Specifically, in this design, by setting the nut sleeve 2 and snapping it into the groove 5 with the snap-fit ​​end 6, a stable connection between the nut sleeve 2 and the nut portion 4 is achieved. The cross-shaped groove 8 is designed for easy tightening or loosening with tools such as Phillips screwdrivers. When the nut sleeve 2 is installed, the anti-theft structure 7 covers the cross-shaped groove 8, effectively preventing unauthorized disassembly, increasing the security of the bolt assembly, and avoiding the possibility of illegal disassembly. This design not only enhances the anti-theft performance of the bolt assembly but also ensures its convenience during normal use.

[0019] Furthermore, the nut sleeve 2 is cylindrical in shape. The anti-theft structure 7 includes an annular support 9 on the inner wall of the nut sleeve 2 and a cover 10 rotatably mounted on the annular support 9. A rotating groove 11 is formed between the annular support 9 and the inner wall of the nut sleeve 2. One side of the cover 10 extends into the rotating groove 11, and the cover 10 is clearance-fitted with the inner wall of the rotating groove 11. Specifically, in this embodiment, the cover 10 is rotatably mounted on the annular support 9 of the nut sleeve 2, and a cross groove 8 is formed on the arc surface of the cover 10 away from the annular support 9. This structure can use the cross groove 8 on the cover 10 to confuse unauthorized dismantling personnel. When unauthorized dismantling personnel use tools to rotate the cover 10, they can only rotate the cover 10, but cannot rotate the nut sleeve 2 or the bolt body 1, thereby further improving the anti-theft effect of the bolt assembly.

[0020] Furthermore, the cover 10 is arranged in an arc shape, and a cover limiting part 12 protrudes from the inner wall of the rotating groove 11 on the side away from the annular support part 9. The cover limiting part 12 limits the axial position of the cover 10 within the rotating groove 11. Specifically, in this embodiment, the cover limiting part 12 ensures that the cover 10 will not detach from the rotating groove 11 during rotation, thus guaranteeing the stability of the cover 10.

[0021] Furthermore, the cover limiting part 12 is arranged in a ring structure, and the width of the cover limiting part 12 is smaller than the width of the cover 10 support part. A cover annular groove 13 corresponding to the cover limiting part 12 is formed on the cover 10, and the cover limiting part 12 extends into the cover annular groove 13 to connect with the cover 10. Specifically, in this embodiment, the cooperative design of the cover limiting part 12 and the cover annular groove 13 restricts the axial movement of the cover 10 while allowing the cover 10 to rotate smoothly on the annular support part 9. This design not only enhances the stability of the structure but also ensures the reliability of the anti-theft function. In addition, the annular structure of the cover limiting part 12 and its compatibility with the cover annular groove 13 make the entire anti-theft structure 7 more compact and less prone to damage, further improving the overall security of the bolt assembly. Through such design details, this anti-theft bolt assembly effectively prevents illegal disassembly while maintaining good ease of use, meeting the security needs of various application scenarios.

[0022] Furthermore, both the nut sleeve 2 and the bolt body 1 are made of stainless steel. Specifically, in this embodiment, the nut sleeve 2 and the bolt body 1 are made of stainless steel, primarily based on the excellent corrosion resistance, high strength, and heat resistance of stainless steel. Stainless steel can effectively resist the erosion of moisture, oxygen, and other corrosive substances in the external environment, thereby ensuring the long-term stability and service life of the bolt assembly in harsh environments. Simultaneously, the high strength of stainless steel allows the bolt assembly to withstand significant mechanical stress, making it less prone to deformation or breakage, ensuring its safety and reliability during use. In addition, stainless steel also has good heat resistance, maintaining stable physical and chemical properties at high temperatures, which is particularly important for applications requiring operation in high-temperature environments.

[0023] Furthermore, the cover 10 is made of stainless steel. Specifically, in this embodiment, the cover 10 is also made of stainless steel, a design choice intended to maintain the overall corrosion resistance, high strength, and heat resistance of the anti-theft structure 7. Similar to the nut sleeve 2 and the bolt body 1, the stainless steel cover 10 can effectively resist corrosive factors in the external environment, extending the service life of the bolt assembly. At the same time, the high strength of the stainless steel cover 10 ensures that it is not easily deformed or damaged when subjected to external forces, further enhancing the reliability and stability of the anti-theft structure 7. In addition, the heat resistance of the stainless steel cover 10 also allows the bolt assembly to maintain stable performance over a wider operating temperature range.

[0024] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An anti-theft bolt assembly, characterized in that: The device includes a bolt body and a nut sleeve. The bolt body has a threaded portion and a nut portion. The nut sleeve is fitted onto the nut portion and is detachably connected to the nut portion. The edge of the end face of the nut portion near the threaded portion is recessed to form a groove. The inner wall of the nut sleeve near the bolt body protrudes to form a snap-fit ​​end. The snap-fit ​​end extends into the groove and snaps into the nut portion. The nut sleeve is provided with an anti-theft structure. A cross groove is formed on the end face of the nut portion away from the threaded portion, and the anti-theft structure covers the cross groove.

2. The anti-theft bolt assembly according to claim 1, characterized in that: The nut sleeve is cylindrical in shape. The anti-theft structure includes an annular support on the inner wall of the nut sleeve and a rotatable cover on the annular support. A rotating groove is formed between the annular support and the inner wall of the nut sleeve. One side of the cover extends into the rotating groove, and there is a clearance fit between the cover and the inner wall of the rotating groove.

3. The anti-theft bolt assembly according to claim 2, characterized in that: The cover is designed with an arc shape. A cover limiting part protrudes from the inner wall of the rotating groove on the side away from the annular support, and the cover limiting part limits the axial position of the cover in the rotating groove.

4. The anti-theft bolt assembly according to claim 2, characterized in that: The cover body has a cross groove formed by an inward concavity on the side of the arc surface away from the annular support.

5. The anti-theft bolt assembly according to claim 3, characterized in that: The cover limiting part is arranged in a ring structure. The width of the cover limiting part is smaller than the width of the cover support part. A cover ring groove corresponding to the cover limiting part is opened on the cover. The cover limiting part extends into the cover ring groove and connects with the cover.

6. The anti-theft bolt assembly according to claim 1, characterized in that: Both the nut sleeve and the bolt body are made of stainless steel.

7. The anti-theft bolt assembly according to claim 2, characterized in that: The cover is made of stainless steel.

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