A stainless steel bolt

Abstract

The utility model relates to bolt technical field especially a stainless steel bolt, including the nut subassembly, the nut subassembly inboard rotation is connected with screw rod subassembly, the nut subassembly inboard is installed transmission subassembly, screw rod subassembly includes screw rod body, the annular ring is fixedly connected with the screw rod body top, the screw rod body inboard is set up and is expanded hole, square groove and sliding hole, transmission subassembly includes cylinder shell, the square board is fixedly connected with the cylinder shell upper end, the square board position close to lower extreme is set up and is chamfered, the cylinder shell top is fixedly connected with permanent magnet block, the cylinder shell set up and are fixedly connected with the duckbill valve in the air passage, the cylinder shell bottom is fixedly connected with the expansion board, the expansion board outboard is fixedly connected with rubber seal ring, in the utility model, the device realizes the authorized controllable disassembly of stainless steel bolt, prevents the unauthorized removal of ordinary tools and single magnetic means, ensures that the unauthorized state is not disassembled, improves the valuable equipment connection security and the security against theft, and does not affect normal maintenance.

Description

Technical Field

[0001] This utility model relates to the field of bolt technology, specifically to a stainless steel bolt. Background Technology

[0002] Stainless steel bolts are standardized fasteners made of stainless steel. They achieve detachable connections between components through a threaded structure. They combine the high strength, corrosion resistance, and rust resistance of metallic materials with good machinability and environmental adaptability. They are widely used in machinery manufacturing, construction engineering, chemical equipment, electronic equipment, shipbuilding and marine industries. They can be divided into various specifications according to head shape, thread type and installation method. They are the core basic components for fixing, positioning and detachable connection of components in industrial production and engineering assembly. To facilitate the disassembly and maintenance of valuable equipment, bolts are commonly used as fasteners. However, when stainless steel bolts are used to fix valuable equipment, the disassembly tools for these bolts are universal, readily available, and easy to imitate. Unauthorized personnel can easily obtain these tools and carry out disassembly operations, directly threatening the safety of the valuable equipment and property. Therefore, a stainless steel bolt is proposed to address the above issues. Utility Model Content

[0003] The purpose of this invention is to provide a stainless steel bolt to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: A stainless steel bolt includes a nut assembly, a screw assembly rotatably connected to the inner side of the nut assembly, a transmission assembly installed inside the nut assembly, the screw assembly including a screw body, an annular ring fixedly connected to the top end of the screw body, an expansion hole, a square groove and a sliding hole formed inside the screw body, the transmission assembly including a cylindrical shell, a square plate fixedly connected to the upper end of the cylindrical shell, a chamfered surface formed near the lower end of the square plate, a permanent magnet fixedly connected to the top end of the cylindrical shell, a duckbill valve fixedly connected to the inner side of the vent passage formed in the cylindrical shell, an expansion plate fixedly connected to the bottom end of the cylindrical shell, and a rubber sealing ring fixedly connected to the outer side of the expansion plate.

[0005] As a further optimization of this utility model, the nut assembly includes a nut body, an insert groove is provided on the inner side of the nut body, and a magnetic flux hole and an insertion hole are provided on the upper end of the nut body near the insert groove, both of which are connected to the insert groove.

[0006] As a further optimization of this utility model, the nut body is provided with an annular limiting groove near its lower end. The annular limiting groove is annular in shape, and its inner side is rotatably connected to an annular ring.

[0007] As a further optimization of this utility model, the inner side of the annular ring is a hollow structure, the inner side of the annular ring, the square groove, the sliding hole and the expansion hole are connected, and a spring is fixedly connected to the bottom end of the expansion hole of the screw body, and the top end of the spring is in contact with the bottom end of the expansion plate.

[0008] As a further optimization of this utility model, the expansion plate is slidably connected to the inside of the expansion hole, the outer side of the rubber sealing ring is in contact with the inner side of the expansion hole, and the cylindrical shell slides inside the sliding hole.

[0009] As a further optimization of this utility model, the square plate and the cylindrical shell are embedded in the inner side of the mounting groove, and a gap is provided between the bottom end of the square plate and the top end of the square groove.

[0010] As a further optimization of this utility model, the permanent magnet block is aligned vertically with the magnetic flux hole, and the duckbill valve is aligned vertically with the insertion hole.

[0011] Compared with the prior art, the beneficial effects of this utility model are: In this invention, the device, through the provision of a nut assembly, a screw assembly, and a transmission assembly, enables authorized and controllable disassembly of stainless steel bolts. This effectively prevents unauthorized personnel from performing disassembly operations using ordinary tools or a single magnetic means. Utilizing a mechanical structure linkage and a unidirectional gas flow control mechanism, the bolt body can be separated from the external operating components by free rotation when no special tools are used. This ensures the bolt's non-removability in an unauthorized state after installation, significantly improving the security and anti-theft properties of fixed connections for valuable equipment, while not affecting the convenience of normal maintenance and disassembly in authorized scenarios. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a cross-sectional view of the overall structure of this utility model; Figure 3 This is an exploded structural diagram of the entire utility model; Figure 4 This is a schematic diagram of the nut assembly structure of this utility model; Figure 5 This is a schematic diagram of the screw assembly structure of this utility model; Figure 6 This is a schematic diagram of the transmission component structure of this utility model.

[0013] In the diagram: 1. Nut assembly; 11. Nut body; 12. Insertion groove; 13. Magnetic flux hole; 14. Insertion hole; 15. Annular limiting groove; 2. Screw assembly; 21. Screw body; 22. Annular ring; 23. Expansion hole; 24. Spring; 25. Square groove; 26. Sliding hole; 3. Transmission assembly; 31. Cylinder shell; 32. Square plate; 33. Chamfered surface; 34. Permanent magnet block; 35. Ventilation duct; 36. Duckbill valve; 37. Extension plate; 38. Rubber sealing ring. Detailed Implementation

[0014] 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.

[0015] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0016] Please see Figures 1-6 This utility model provides a technical solution: A stainless steel bolt includes a nut assembly 1, a screw assembly 2 rotatably connected to the inner side of the nut assembly 1, and a transmission assembly 3 installed inside the nut assembly 1. The screw assembly 2 includes a screw body 21, an annular ring 22 fixedly connected to the top end of the screw body 21, and an expansion hole 23, a square groove 25, and a sliding hole 26 opened inside the screw body 21. The transmission assembly 3 includes a cylindrical shell 31, a square plate 32 fixedly connected to the upper end of the cylindrical shell 31, a chamfered surface 33 opened near the lower end of the square plate 32, a permanent magnet block 34 fixedly connected to the top end of the cylindrical shell 31, a duckbill valve 36 fixedly connected inside the vent 35 opened in the cylindrical shell 31, an expansion plate 37 fixedly connected to the bottom end of the cylindrical shell 31, and a rubber sealing ring 38 fixedly connected to the outer side of the expansion plate 37.

[0017] As a further implementation of this solution, the nut assembly 1 includes a nut body 11. An insert groove 12 is provided on the inner side of the nut body 11. A magnetic flux hole 13 and an insertion hole 14 are provided on the upper end of the nut body 11 near the insert groove 12. Both the magnetic flux hole 13 and the insertion hole 14 are connected to the insert groove 12. An annular limiting groove 15 is provided on the lower end of the nut body 11. The annular limiting groove 15 is annular in shape. The inner side of the annular limiting groove 15 is rotatably connected to the annular ring 22. Through the above settings, the rotational cooperation design of the annular limiting groove 15 and the annular ring 22 allows the nut body 11 to rotate relative to the screw body 21 when no special tools are used. This prevents unauthorized personnel from rotating the bolt body with ordinary tools, ensuring non-disassembly in the unauthorized state, while not affecting the stability of force transmission during authorized disassembly. The opening of the magnetic flux hole 13 can reduce interference with the magnetic repulsion force, and the opening of the insertion hole 14 facilitates the insertion of the iron rod into the insertion hole 14. As a further implementation of this solution, the inner side of the annular ring 22 is a hollow structure. The inner side of the annular ring 22, the square groove 25, the sliding hole 26 and the expansion hole 23 are connected. The bottom end of the expansion hole 23 opened in the screw body 21 is fixedly connected to a spring 24. The top end of the spring 24 is in contact with the bottom end of the expansion plate 37. Through the above arrangement, the connection design of each component provides a channel for the sliding of the expansion plate 37 and the gas flow. With the elastic support of the spring 24 on the expansion plate 37, the expansion plate 37 can be pushed in an unauthorized state to drive the cylinder shell 31 and the square plate 32 to reset and embed into the inner side of the mounting groove 12, so as to realize the free rotation separation of the bolt body and the external operating components. As a further implementation of this solution, the expansion plate 37 is slidably connected to the inside of the expansion hole 23, the outer side of the rubber sealing ring 38 is in contact with the inner side of the expansion hole 23, and the cylinder shell 31 slides inside the sliding hole 26. Through the above settings, the sliding fit structure of the expansion plate 37 and the expansion hole 23, and the cylinder shell 31 and the sliding hole 26, combined with the sealing effect of the rubber sealing ring 38, realizes the precise guidance of unidirectional gas flow control and mechanical linkage. This not only prevents unauthorized personnel from driving the structure to move downward by a single magnetic means, but also ensures that special tools can smoothly drive the cylinder shell 31 and the square plate 32 to move under authorized conditions, thereby improving the stability of the device operation and the reliability of anti-theft. As a further implementation of this solution, the square plate 32 and the cylindrical shell 31 are embedded in the inner side of the mounting groove 12. A gap is provided between the bottom end of the square plate 32 and the top end of the square groove 25. Through the above-mentioned settings, the embedding design and gap setting of the square plate 32 and the cylindrical shell 31 enable the square plate 32 to slide precisely into the square groove 25 to achieve force transmission during authorized disassembly, thereby driving the bolt body to rotate synchronously. In the unauthorized state, the separation of the square plate 32 and the square groove 25 ensures the idling effect, thus balancing the efficiency of authorized disassembly and the anti-theft properties in the unauthorized state. As a further implementation of this solution, the permanent magnet block 34 is aligned vertically with the magnetic flux hole 13, and the duckbill valve 36 is aligned vertically with the insertion hole 14. Through the above settings, this alignment design ensures that the permanent magnet of the special tool can form a precise magnetic repulsion with the permanent magnet block 34, while enabling the iron rod of the special tool to be precisely inserted into the duckbill valve 36 to achieve gas communication control. This ensures the coordinated effectiveness of the mechanical structure linkage and the gas control mechanism, realizes authorized and controllable disassembly, effectively prevents unauthorized personnel from disassembling the equipment using ordinary tools or a single magnetic means, and significantly improves the security and maintenance convenience of the connection of valuable equipment.

[0018] Workflow: When disassembling stainless steel bolts, a special socket wrench is used. A cylindrical iron rod is welded near the center of the socket wrench for insertion into the insertion hole 14 and the duckbill valve 36. Simultaneously, two permanent magnets are welded near the front and rear ends of the iron plate. These permanent magnets align with the magnetic flux hole 13, generating a magnetic repulsive force with the permanent magnet block 34. When the socket wrench is placed on the outside of the nut body 11, the iron rod first inserts into the insertion hole 14, and then, upon further movement, inserts into the duckbill valve 36. This repulsion is achieved by adjusting the angle of the rod. The lower end of the spout valve 36 is supported, creating a gap at the port of the duckbill valve 36, allowing the gas inside the vent 35 to communicate with the outside. At the same time, the repulsive force of the permanent magnet causes the permanent magnet block 34 to drive the cylinder shell 31 to move downward, causing the square plate 32 to slide into the interior of the square groove 25. The extension plate 37 compresses the spring 24. At this time, the nut body 11 is rotated by the socket wrench. Since the square plate 32 is embedded in the square groove 25 and the mounting groove 12, the nut body 11 will drive the screw body 21 to rotate through the square plate 32, thereby removing the bolt. Without a dedicated socket wrench, the spring force of spring 24 pushes the extension plate 37 and the cylindrical shell 31 upward, causing the square plate 32 to be fully embedded in the mounting groove 12. The square plate 32 is far from the square groove 25. When the nut body 11 is turned with a regular wrench, the nut body 11 drives the square plate 32 and the cylindrical shell 31 to rotate freely. The cylindrical shell 31 and the extension plate 37 will only rotate inside the sliding hole 26 and the expansion hole 23. At the same time, the annular limiting groove 15 and the annular ring 22 rotate and engage. Thus, the screw body 21 cannot be removed after it is installed inside the equipment. In addition, the duckbill valve 36 can prevent non-staff members from simply moving the permanent magnet block 34 and the square plate 32 downward by using a magnet. Because the rubber sealing ring 38 seals the gas flow of the duckbill valve 36 in one direction, the transmission component 3 cannot be moved downward by a single magnetic repulsion force, thereby improving safety performance.

[0019] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A stainless steel bolt, comprising a nut assembly (1), characterized in that: The screw assembly (2) is rotatably connected to the inside of the nut assembly (1), and a transmission assembly (3) is installed inside the nut assembly (1). The screw assembly (2) includes a screw body (21), an annular ring (22) is fixedly connected to the top of the screw body (21), and an expansion hole (23), a square groove (25) and a sliding hole (26) are provided on the inner side of the screw body (21). The transmission assembly (3) includes a cylindrical shell (31), a square plate (32) is fixedly connected to the upper end of the cylindrical shell (31), a chamfered surface (33) is provided near the lower end of the square plate (32), a permanent magnet block (34) is fixedly connected to the top of the cylindrical shell (31), a duckbill valve (36) is fixedly connected to the inner side of the ventilation channel (35) opened in the cylindrical shell (31), an extension plate (37) is fixedly connected to the bottom end of the cylindrical shell (31), and a rubber sealing ring (38) is fixedly connected to the outer side of the extension plate (37).

2. A stainless steel bolt according to claim 1, characterized in that: The nut assembly (1) includes a nut body (11), an insert groove (12) is provided on the inner side of the nut body (11), and a magnetic flux hole (13) and a insertion hole (14) are provided on the upper end of the nut body (11) near the insert groove (12), and the magnetic flux hole (13) and the insertion hole (14) are both connected to the insert groove (12).

3. A stainless steel bolt according to claim 2, characterized in that: The nut body (11) has an annular limiting groove (15) near the lower end. The annular limiting groove (15) is annular in shape and is rotatably connected to the annular ring (22) on the inner side.

4. A stainless steel bolt according to claim 1, characterized in that: The inner side of the annular ring (22) is hollow. The inner side of the annular ring (22), the square groove (25), the sliding hole (26) and the expansion hole (23) are connected. A spring (24) is fixedly connected to the bottom end of the expansion hole (23) opened on the screw body (21). The top end of the spring (24) is attached to the bottom end of the expansion plate (37).

5. A stainless steel bolt according to claim 1, characterized in that: The expansion plate (37) is slidably connected to the inside of the expansion hole (23), the outer side of the rubber sealing ring (38) is in contact with the inner side of the expansion hole (23), and the cylindrical shell (31) slides inside the sliding hole (26).

6. A stainless steel bolt according to claim 1, characterized in that: The square plate (32) and the cylindrical shell (31) are embedded in the inner side of the mounting groove (12), and a gap is provided between the bottom end of the square plate (32) and the top end of the square groove (25).

7. A stainless steel bolt according to claim 1, characterized in that: The permanent magnet block (34) is aligned vertically with the magnetic flux hole (13), and the duckbill valve (36) is aligned vertically with the insertion hole (14).

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