Access controller with magnetic force anti-disassembly function
By combining ball bearings, fixing pins, fixing cylinders, and tapered tubes, along with a magnetic anti-tamper design, the problem of easy disassembly of the access control machine's connection points is solved, achieving stable connection and efficient anti-theft performance for the access control machine.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DONGGUAN YOULIAN YINUO BIOTECHNOLOGY CO LTD
- Filing Date
- 2025-08-08
- Publication Date
- 2026-07-14
AI Technical Summary
After installation, the screws and nuts of existing access control machines are exposed to the air, making them easy to loosen and separate, which can lead to the theft of the main body of the access control machine and affect its anti-theft performance.
It uses a combination of ball bearings, fixing pins, fixing cylinders and tapered tubes, connected by elastic components, combined with a magnetic anti-tamper design to hide the connection points, and the main body of the access control machine can only be disassembled by a magnet.
This achieved the camouflage of the access control machine's connection point, enhanced anti-theft performance, and improved the stability and anti-theft effect of the access control machine.
Smart Images

Figure CN224498126U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of access control technology, and more specifically to an access control machine with magnetic anti-tamper function. Background Technology
[0002] Access control machines are the core control devices of access control systems. They integrate functions such as access control control boards, card readers, and authentication modules, and achieve secure control of entrances and exits through automated management.
[0003] A search revealed a multi-functional access control machine disclosed in announcement number CN219978897U. This machine solves the problems of existing access control machines being cumbersome to install and having limited functionality, mostly limited to card swiping or fingerprint recognition. However, after installation, the screws and nuts fixing the main body of the access control machine to the mounting block are exposed to the air, making them very easy to loosen and separate. This makes the main body of the access control machine easy to steal, thus affecting the anti-theft performance of the access control machine. Utility Model Content
[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides an access control machine with magnetic anti-tamper function to solve the problems existing in the background art.
[0005] This utility model provides the following technical solution: an access control machine with magnetic anti-tamper function, including an access control machine body and a fixing base. Two fixing pins are glued to one side of the access control machine body. Two fixing cylinders are integrally formed on one side of the fixing base. A tapered tube is glued inside each fixing cylinder. A sliding tube is provided between the tapered tube and the fixing cylinder, and the sliding tube and the fixing cylinder are connected by an elastic component. Multiple sliding grooves are opened on the outer circumference of the sliding tube, and ball bearings are placed in the sliding grooves. A clearance hole is opened at one end of the tapered tube, and the fixing pins pass through the clearance hole and contact the multiple ball bearings.
[0006] As a further embodiment of this utility model, the elastic component is a spring, which is disposed between the slide tube and the fixed cylinder, and the spring is fixed to the slide tube.
[0007] As a further embodiment of this invention, a magnetic block is attached to one end of the outer circumference of the sliding tube.
[0008] As a further embodiment of this utility model, one end of the access control machine body is provided with an insertion port, a protective cover is slidably connected inside the insertion port, and a fixing cylinder is located inside the protective cover. The access control machine body is provided with a limiting component for fixing the position of the protective cover.
[0009] As a further embodiment of this utility model, the limiting component includes at least one mounting groove opened on the top of the protective cover, in which a rubber ball is placed. Two elastic plates are integrally formed on one side of the inner wall of the access control machine's main body housing. An arc-shaped groove is opened at the bottom of the elastic plate, and the rubber ball is located in the arc-shaped groove.
[0010] As a further embodiment of this utility model, slots are provided on both sides of the bottom outer wall of the main body of the access control machine, and card holders are integrally formed on both sides of the top of the fixing base, and the card holders are inserted into the slots.
[0011] As a further embodiment of this utility model, a USB external interface is provided on one side of the main housing of the access control machine, and a rubber cover is inserted into the USB external interface.
[0012] As a further embodiment of this invention, a wire groove is provided at the bottom of the main housing of the access control machine to avoid obstructing the wires.
[0013] The technical effects and advantages of this utility model are as follows:
[0014] 1. This utility model, through the combined use of ball bearings, fixing pins, fixing cylinders, and tapered tubes, can ensure that there are no pinholes, screws, or nuts at the connection between the main body of the access control machine and the fixed base, thereby greatly disguising the connection point of the access control machine and enhancing its anti-theft performance.
[0015] 2. This utility model, by providing an elastic component, can provide power for the reset of the slide tube, so that the ball bearing keeps the fixing pin locked, maintaining the stability of the connection between the access control machine body and the fixed base.
[0016] 3. By providing a protective cover, this utility model can conceal the fixing cylinder, further deceiving the installation and connection method of the access control machine body, and further improving the anti-theft performance of the access control machine. Attached Figure Description
[0017] Figure 1 This is a three-dimensional structural diagram of the present invention.
[0018] Figure 2 For the present utility model Figure 1 A schematic diagram of its decomposed structure.
[0019] Figure 3 This is a partial cross-sectional view of the present invention.
[0020] Figure 4 This is a partially enlarged structural schematic diagram of the present invention.
[0021] Figure 5 For the present utility model Figure 4 A schematic diagram of its decomposed structure.
[0022] The attached diagram is labeled as follows: 1. Access control machine body; 2. Fixing base; 3. Rubber cover; 4. USB external interface; 5. Cable tray; 6. Protective cover; 7. Socket; 8. Fixing pin; 9. Card slot; 10. Fixing cylinder; 11. Card holder; 12. Spring; 13. Magnetic block; 14. Sliding tube; 15. Ball bearing; 16. Alternating hole; 17. Sliding groove; 18. Tapered tube; 19. Elastic plate; 20. Arc-shaped groove; 21. Rubber ball; 22. Mounting slot. Detailed Implementation
[0023] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. This utility model is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0024] Reference Figures 1-5 This utility model provides an access control machine with magnetic anti-tamper function, including an access control machine body 1 and a fixing base 2. Two fixing pins 8 are glued to one side of the access control machine body 1. Two fixing cylinders 10 are integrally formed on one side of the fixing base 2. A tapered tube 18 is glued inside each of the two fixing cylinders 10. A sliding tube 14 is provided between the tapered tube 18 and the fixing cylinder 10. The sliding tube 14 and the fixing cylinder 10 are connected by an elastic component. Multiple sliding grooves 17 are opened on the outer circumference of the sliding tube 14. Ball bearings 15 are placed in the sliding grooves 17. A clearance hole 16 is opened at one end of the tapered tube 18. The fixing pins 8 pass through the clearance hole 16 and contact the multiple ball bearings 15. A magnetic block 13 is glued to one end of the outer circumference of the sliding tube 14.
[0025] When installing the access control machine body 1 and the mounting base 2, the fixing pin 8 is inserted into the fixing cylinder 10 through the clearance hole 16. The fixing pin 8 will squeeze the ball 15 and the slide tube 14 to move backward, so that the ball 15 can move in the slide groove 17, and the fixing pin 8 can pass through multiple balls 15. After the fixing pin 8 passes through multiple balls 15, the elastic component will squeeze the slide tube 14 to reset, so that multiple balls 15 contact the fixing pin 8 and the tapered tube 18, thereby fixing the fixing pin 8 and completing the installation of the access control machine body 1 and the mounting base 2.
[0026] Since there are no pinholes, screws, or nuts on the outside, the connection points of the access control machine can be greatly disguised, thereby enhancing the anti-theft performance of the access control machine.
[0027] When it is necessary to disassemble the access control machine body 1 and the fixing base 2, a magnet that attracts the magnetic block 13 is attached to one side of the fixing cylinder 10. When the attraction between the magnet and the magnetic block 13 is much greater than the elastic force of the elastic component, the magnet will attract the magnetic block 13 and the slide tube 14 to move towards the magnet, thereby releasing the fixing pin 8, so that the access control machine body 1 and the fixing base 2 can be disassembled. Only by using a magnet can the access control machine body 1 be disassembled, realizing the magnetic anti-tamper function of the access control machine.
[0028] The elastic component is a spring 12, which is located between the slide tube 14 and the fixed cylinder 10 and is fixed to the slide tube 14. Alternatively, it can be an elastic rubber ring, with both ends of the elastic rubber ring bonded to the slide tube 14 and the fixed cylinder 10 respectively. This ring provides power for the slide tube 14 to reset, so that the ball bearing 15 keeps holding the fixed pin 8, maintaining the stability of the connection between the access control machine body 1 and the fixed base 2.
[0029] The access control machine body 1 has an opening 7 at one end, a protective cover 6 is slidably connected inside the opening 7, and a fixing cylinder 10 is located inside the protective cover 6. The access control machine body 1 is provided with a limiting component to fix the position of the protective cover 6.
[0030] When the access control machine body 1 is installed with the mounting base 2, the mounting cylinder 10 is pulled and slid in the socket 7 so that the mounting cylinder 10 can enter the protective cover 6, thereby hiding the mounting cylinder 10 and further confusing the installation and connection method of the access control machine body 1, thus further improving the anti-theft performance of the access control machine.
[0031] The limiting component includes at least one mounting groove 22 on the top of the protective cover 6, in which a rubber ball 21 is placed. Two elastic plates 19 are integrally formed on one side of the inner wall of the access control machine body 1. An arc-shaped groove 20 is provided at the bottom of the elastic plate 19, and the rubber ball 21 is located in the arc-shaped groove 20.
[0032] After the access control machine body 1 and the fixed base 2 are installed, push the protective cover 6 to reset, thereby restoring the rubber ball 21 that has been squeezed and deformed, and then let the rubber ball 21 be inserted into the arc-shaped groove 20, thereby assisting in fixing the position of the protective cover 6, so that the protective cover 6 will not fall off easily, and improving the stability of the protective cover 6 in disguise.
[0033] The access control machine body 1 has slots 9 on both sides of the bottom outer wall of the housing, and the top of the fixed base 2 has a bracket 11 integrally formed on both sides. When the access control machine body 1 and the fixed base 2 are installed, the bracket 11 will be inserted into the slots 9, increasing the connection points between the fixed base 2 and the access control machine body 1, making the fixation between the access control machine body 1 and the fixed base 2 more stable.
[0034] The access control machine body 1 has a USB external interface 4 on one side of its housing. A rubber cover 3 is inserted into the USB external interface 4. The USB external interface 4 can connect external devices to the access control machine body 1 and transmit data. The bottom of the access control machine body 1 has a cable groove 5 to avoid the power cord or data cable of the access control machine body 1, so that the access control machine body 1 can fit tightly with the mounting base 2.
[0035] It should be noted that the access control machine body 1 in this utility model is existing technology, including access control board, card reader, fingerprint recognition module, etc. Those skilled in the art can purchase and set it up according to actual needs, which will not be described in detail here.
[0036] The specific installation steps for the access control machine in this application are as follows:
[0037] Fix the mounting base 2 to the wall or support frame with screws, pull the protective cover 6 to connect the main body 1 of the access control machine to the mounting base 2. At this time, the fixing cylinder 10 is located inside the protective cover 6, and the card holder 11 is located inside the card slot 9.
[0038] Then, the fixing pin 8 is inserted into the fixing cylinder 10 through the clearance hole 16. The fixing pin 8 will squeeze the ball 15 and the slide tube 14 to move backward, so that the ball 15 can move in the slide groove 17, and thus the fixing pin 8 can pass through the multiple balls 15. After the fixing pin 8 passes through the multiple balls 15, the spring 12 will squeeze the slide tube 14 to reset, so that the multiple balls 15 contact the fixing pin 8 and the tapered tube 18, thereby fixing the fixing pin 8 and completing the installation of the access control machine body 1 and the fixing base 2.
[0039] Finally, the following points should be noted: In the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection" and "linkage" should be interpreted broadly, and can be mechanical or electrical connection, or internal connection between two components, or direct connection. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationship. When the absolute position of the described object changes, the relative positional relationship may change.
[0040] The electronic components and modules used in this utility model can all be parts that are commonly used in the market and can achieve the specific functions in this case. The specific models and sizes can be selected and adjusted according to actual needs.
[0041] The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.
Claims
1. An access control machine with magnetic anti-tamper function, comprising an access control machine body (1) and a fixing base (2), characterized in that: Two fixing pins (8) are glued to one side of the main body (1) of the access control machine. Two fixing cylinders (10) are integrally formed on one side of the fixing seat (2). A tapered tube (18) is glued inside each of the two fixing cylinders (10). A sliding tube (14) is provided between the tapered tube (18) and the fixing cylinder (10). The sliding tube (14) and the fixing cylinder (10) are connected by an elastic component. Multiple sliding grooves (17) are opened on the outer circumference of the sliding tube (14). Ball bearings (15) are placed in the sliding grooves (17). A clearance hole (16) is opened at one end of the tapered tube (18). The fixing pins (8) pass through the clearance hole (16) and contact the multiple ball bearings (15).
2. The access control machine with magnetic anti-tamper function according to claim 1, characterized in that: The elastic component is a spring (12), which is disposed between the slide tube (14) and the fixed cylinder (10), and the spring (12) is fixed to the slide tube (14).
3. The access control machine with magnetic anti-tamper function according to claim 1, characterized in that: A magnetic block (13) is attached to one end of the outer circumference of the slide tube (14).
4. The access control machine with magnetic anti-tamper function according to claim 1, characterized in that: One end of the access control machine body (1) is provided with a socket (7), a protective cover (6) is slidably connected inside the socket (7), and a fixing cylinder (10) is located inside the protective cover (6). The access control machine body (1) is provided with a limiting component to fix the position of the protective cover (6).
5. An access control machine with magnetic anti-tamper function according to claim 4, characterized in that: The limiting component includes at least one mounting groove (22) on the top of the protective cover (6), and a rubber ball (21) is placed in the mounting groove (22). The inner wall of one side of the access control machine body (1) has two elastic plates (19) integrally formed. The bottom of the elastic plate (19) is provided with an arc-shaped groove (20), and the rubber ball (21) is located in the arc-shaped groove (20).
6. The access control machine with magnetic anti-tamper function according to claim 1, characterized in that: The access control machine body (1) has slots (9) on both sides of the bottom outer wall of the housing, and the top of the fixed base (2) has a card holder (11) integrally formed on both sides, and the card holder (11) is inserted into the slot (9).
7. An access control machine with magnetic anti-tamper function according to claim 1, characterized in that: The access control machine body (1) has a USB external interface (4) on one side of its housing, and a rubber cover (3) is inserted into the USB external interface (4).
8. An access control machine with magnetic anti-tamper function according to claim 7, characterized in that: The bottom of the main body (1) of the access control machine has a wire groove (5) for avoiding the wires.