Anti-disassembly device for access control terminal
The door access control terminal with a self-locking latch and backup mechanism enhances security by preventing unauthorized disassembly and ensuring timely alerts, addressing vulnerabilities in existing systems.
Patent Information
- Application Number
- CN202421901432.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-07
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-08-07
AI Technical Summary
The anti-tamping function of the existing access control system is easily cracked by proficient people, resulting in safety risks, and the complexity of installation and maintenance causes the anti-tamping function to be not widely enabled or correctly configured.
It adopts a combination of self-locking latch, elastic parts and one-way solenoids. Through the buckle of self-locking latch with the terminal panel and the bottom plate, combined with anti-tamper sensor and anti-dust line design, it ensures a firm connection between the panel and the bottom plate, and triggers an alarm during illegal disassembly.
Effectively prevent illegal disassembly, enhance the safety and reliability of the access control system, ensure the safety and order of specific areas, and improve the convenience of installation and maintenance.
Smart Images
Figure CN223110300U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of access control and security, and more specifically, to an anti-disassembly device for an access control terminal. Background Art
[0002] With the increasing social demand for security, the access control system, as the first line of defense for protecting the security of a specific area, its stability and reliability are highly emphasized. The security protection ability of the access control system not only needs to prevent the intrusion of external unauthorized personnel, but also be able to resist potential threats from internal personnel, including system engineers and administrators.
[0003] Currently, the installation of most access control products realizes the physical security of the access control terminal by fixing it with screws in the card slots under the bottom plate and the panel of the access control terminal. However, the only screw for opening the panel is usually exposed within the reach of the controlled personnel, posing a risk of tampering and intrusion into the system by those with proficient technology.
[0004] To enhance the security of the access control terminal, some products have introduced an anti-disassembly switch mechanism to prevent the illegal opening of the terminal panel. However, due to the diversity of the installation environment, the uneven technical levels of construction workers, and the complexity of maintenance operations, these anti-disassembly functions are often not widely enabled or correctly configured. In addition, the anti-disassembly switch designs on the market currently also have defects. Whether it is a non-self-locking push-button switch or the method using a reed switch and a magnet, there is a risk of being cracked by professional intruders. Existing anti-disassembly measures are easily bypassed by sophisticated tools or through precise understanding of the triggering mechanism.
[0005] Technicians can easily bypass the security measures by taking advantage of these security loopholes in the existing access control system and enter restricted areas, posing a security hazard. Even if access control products with anti-disassembly functions are installed, due to various reasons, they are not activated or are cracked, resulting in multiple illegal intrusion incidents. Therefore, a new solution is needed to solve the problem of the poor security of the anti-disassembly function of the current access control system. Summary of the Utility Model
[0006] Aiming at the deficiencies of the existing technology, the purpose of the utility model is to provide an anti-disassembly device for an access control terminal, and achieve the purpose of improving the security of the anti-disassembly function of the access control system through the structural setting.
[0007] The above-mentioned technical purpose of the utility model is achieved through the following technical solutions: an access control terminal anti-disassembly device, comprising a terminal base plate installed outside the door and a terminal panel detachably connected to the terminal base plate, a terminal inner cavity is formed between the terminal base plate and the terminal panel, a self-locking latch is arranged on the inner side of the terminal panel, an elastic member and a positioning member for limiting the elastic member from being separated from the lock handle are sequentially sleeved on the self-locking latch from bottom to top, the elastic member is in a compressed state, and the elastic member applies a force to the self-locking latch close to the bottom end of the terminal panel, the lower ends of the terminal base plate and the terminal panel are buckled by the self-locking latch, and a driving device for driving the self-locking latch to move to the terminal base plate and the terminal panel to disconnect is arranged in the access control inner cavity.
[0008] The utility model is further configured as follows: the terminal panel is fixedly connected with a bracket, the bracket is slidably connected to the self-locking pin, the bottom end of the terminal base plate is fixedly connected with a convex edge, the convex edge has a lock groove facing upward, the self-locking pin includes a lock tongue and a lock handle fixedly connected to each other, and the lock tongue penetrates into the lock groove when the terminal panel and the terminal base plate are buckled.
[0009] The utility model is further configured as follows: the elastic member is sleeved on the lock handle, and the driving device comprises a one-way electromagnet arranged at one end of the elastic member away from the lock tongue.
[0010] The utility model is further configured as follows: when the one-way electromagnet is not energized, the elastic member is in a compressed state, the elastic member applies a force on the lock tongue in a direction close to the lock slot, and when the one-way electromagnet is energized, the lock tongue applies a force in a direction away from the lock slot.
[0011] The utility model is further configured as follows: the lock handle is fixedly connected with an anti-fool wire, a wire passing hole is provided in the middle position of the terminal bottom plate, a slip ring is provided in the access control inner cavity, and the anti-fool wire passes through the slip ring and then passes through the wire passing hole.
[0012] The utility model is further configured as follows: an anti-disassembly sensor is installed in the terminal panel, and when the terminal panel is illegally disassembled, the anti-disassembly sensor triggers an alarm signal.
[0013] The utility model is further configured as follows: a panel hook is fixedly connected to a position near the top of the terminal panel, a card slot is opened near the top of the terminal base plate, and the upper ends of the terminal base plate and the terminal panel are snap-fitted with the card slot through the panel hook.
[0014] The utility model is further configured as follows: the terminal bottom plate is provided with a plurality of fixing holes.
[0015] In summary, the utility model has the following beneficial effects:
[0016] The anti-disassembly device of this access control terminal realizes the firm connection between the panel and the bottom plate through the combination of a self-locking bolt, an elastic member, and a positioning member, effectively preventing illegal disassembly, constructing a more rigorous security loop, ensuring the stable and reliable operation of the access control system, and effectively guaranteeing the safety and order of a specific area. The built-in anti-disassembly sensor can quickly trigger an alarm when detecting unauthorized operations, enhancing the timeliness of security prevention. The one-way electromagnet, as a driving device, unlocks only when powered on, which not only facilitates the use of authorized personnel but also improves the security of the system. It also adopts a foolproof wire and slip ring design as a backup opening solution to ensure the accuracy of operations and the durability of the device, improving the convenience of installation and maintenance. Description of the Drawings
[0017] Figure 1 is a cross-sectional view of the present utility model;
[0018] Figure 2 is a cross-sectional view when the terminal bottom plate and the terminal panel are buckled;
[0019] Figure 3 is a structural schematic diagram of the terminal bottom plate.
[0020] In the figure: 1, terminal bottom plate; 2, terminal panel; 3, terminal inner cavity; 4, elastic member; 5, bracket; 6, convex edge; 61, lock groove; 71, lock tongue; 72, lock handle; 8, one-way electromagnet; 9, positioning member; 10, foolproof wire; 11, wire passing hole; 12, slip ring; 13, anti-disassembly sensor; 14, card slot; 15, fixing hole. Detailed Embodiment
[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model; obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.
[0022] Embodiment:
[0023] As Figure 1 and Figure 3As shown in the figure, the anti-disassembly device of the access control terminal includes a terminal bottom plate 1 installed outside the door and a terminal panel 2 detachably connected to the terminal bottom plate 1. A terminal inner cavity 3 is formed between the terminal bottom plate 1 and the terminal panel 2. The terminal bottom plate 1 is provided with four circular fixing holes 15 distributed in an array for fixing the terminal bottom plate 1 on the wall outside the door. The terminal bottom plate 1 and the terminal panel 2 are made of ABS material added with PET, providing sufficient material strength for the terminal bottom plate 1 and the terminal panel 2. An inward-clamping panel hook is integrally formed at a position near the top of the terminal panel 2, and a slot 14 matching the panel hook is opened at a position near the top of the terminal bottom plate 1. The connection above the terminal bottom plate 1 and the terminal panel 2 is clamped by the panel hook and the slot 14, enhancing the overall structural stability. A circular wire passing hole 11 with a diameter of 30 mm is opened at the center of the terminal bottom plate 1.
[0024] As Figures 1 - 3 shown in the figure, a bracket 5 is installed inside the terminal panel 2, and an iron self-locking bolt is installed on the bracket 5. The self-locking bolt includes a lock tongue 71 and a long strip-shaped lock handle 72 integrally formed. One end of the lock tongue 71 away from the lock handle 72 is a bevel tip. An elastic member 4, a one-way electromagnet 8, and a positioning member 9 are sequentially sleeved on the lock handle 72 from bottom to top. The elastic member 4 is a spring, and the positioning member 9 is a circlip. The terminal bottom plate 1 and the terminal panel 2 are buckled by the self-locking bolt at the lower part. The elastic member 4 is in a compressed state, applying a force to the lock tongue 71 to move it closer to the bottom end of the terminal panel 2. The lower ends of the terminal bottom plate 1 and the terminal panel 2 are buckled by the self-locking bolt, and the compressed elastic member 4 is used to provide a continuous force, so that the self-locking bolt always stays in the correct position, increasing the durability and reliability of the anti-disassembly device of the access control terminal. A driving device for driving the self-locking bolt to move to disconnect the terminal bottom plate 1 and the terminal panel 2 is provided inside the access control inner cavity. When the system issues a maintenance command, the self-locking bolt is opened by controlling the driving device.
[0025] As Figure 1 and Figure 2 shown in the figure, a convex edge 6 is integrally formed at the bottom end of the terminal bottom plate 1, and a square lock groove 61 is opened upward on the convex edge 6. During the process of the terminal panel 2 being buckled with the terminal bottom plate 1, one end of the convex edge 6 away from the terminal bottom plate 1 first abuts against the bevel of the lock tongue 71. While the terminal panel 2 gradually approaches the terminal bottom plate 1, the lock tongue 71 gradually moves upward, and the compression degree of the elastic member 4 increases. Subsequently, the lock tongue 71 moves to the lock groove 61, and the elastic member 4 pushes the tip of the lock tongue 71 into the lock groove 61, thus forming a closed state that cannot be opened from the outside. In the case of unauthorized access, the self-locking bolt remains locked to prevent illegal disassembly.
[0026] As Figure 1 and Figure 2As shown, the one-way electromagnet 8 is respectively connected to a direct current with a voltage value of 12V and a ground wire or a neutral wire. When not powered on, the elastic member 4 is in a compressed state, and the elastic member 4 applies a force on the lock tongue 71 in a direction close to the lock slot 61. When the one-way electromagnet 8 is powered on, the one-way electromagnet 8 generates a magnetic field to attract the lock tongue 71 to move in a direction away from the lock slot 61. The one-way electromagnet 8 does not need to be powered on for a long time, and is only powered on when the access control terminal needs to be opened, thereby saving energy.
[0027] like Figure 2 and Figure 3 As shown, in order to prevent the terminal panel 2 from being unable to be opened due to electrical failure, an anti-fool wire 10 is installed. The anti-fool wire 10 is a steel wire. A through hole is opened at the end of the lock handle 72 away from the lock tongue 71. One end of the anti-fool wire 10 is tied to the lock handle 72 through the through hole, and then passes through the slip ring 12 in the terminal cavity 3, and then passes through the wire hole 11 of the terminal bottom plate 1. The other end of the anti-fool wire 10 passes through the wall and is led to the switch box of the panel inside the door. The direction of the pulling force is changed from horizontal to vertical upward through the slip ring 12, so that the lock handle 72 can be moved vertically upward by pulling the anti-fool wire 10 horizontally in the door. When the opening circuit of the terminal panel 2 fails, the maintenance personnel can open the switch box of the panel inside the door and mechanically open the self-locking bolt by pulling the anti-fool wire 10, thereby ensuring the normal operation of the access control system.
[0028] like Figure 3 As shown, a press-type anti-dismantling sensor 13 is installed in the terminal panel 2. The anti-dismantling sensor 13 can be installed on the inner side of the terminal base plate 1 or the terminal panel 2. The anti-dismantling sensor 13 is arranged above the lock tongue 71. When the terminal panel 2 is illegally disassembled, after the terminal panel 2 is opened, the pressing of the anti-dismantling sensor 13 by the terminal panel 2 or the terminal base plate 1 fails, and the anti-dismantling sensor 13 triggers an alarm signal. The lock tongue 71 is used to prevent illegal use of sheet objects from being inserted into the terminal panel 2 from the bottom of the access control terminal to press against the anti-dismantling sensor 13, so as to prevent the anti-dismantling sensor 13 from failing to trigger an alarm signal when the terminal panel 2 is opened due to the sheet objects pressing against the anti-dismantling sensor 13.
[0029] Operation steps: Figures 1 - 3As shown in the figure, when installing the access control terminal, tie the anti-fooling wire 10 to the lock handle 72, pass it through the slip ring 12 and then through the wire passing hole 11. The other end of the anti-fooling wire 10 passes through the wall and leads to the switch box on the inner panel of the door. Then install the anti-tampering sensor 13 in the inner cavity 3 of the terminal. When the terminal panel 2 is buckled, the inclined surface of the lock tongue 71 abuts against the convex edge 6. As the terminal panel 2 approaches the terminal bottom plate 1 and rises, the elastic member 4 is gradually compressed. The lock tongue 71 moves to the lock groove 61, and the elastic member 4 pushes the tip of the lock tongue 71 into the lock groove 61. After buckling, the access control terminal cannot be opened from the outside. When it is necessary to open the access control terminal for maintenance, the system issues a maintenance command to energize the one-way electromagnet 8. The one-way electromagnet 8 attracts the self-locking bolt to move upward, so that the terminal bottom plate 1 and the terminal panel 2 are disconnected. When there is a fault in the circuit for opening the terminal panel 2, the maintenance personnel open the switch box on the inner panel of the door and horizontally pull out the anti-fooling wire 10 to make the self-locking bolt move upward, so that the terminal bottom plate 1 and the terminal panel 2 are disconnected.
[0030] Performance Test
[0031] The access control terminal of the present invention performs excellently in terms of security, reliability, waterproofness, etc., and fully meets the expected technical indicators. The specific test conditions are as follows:
[0032] Security Test: Multiple security tests were carried out on the access control terminal of the embodiment, covering the situations of brute force cracking and technical intrusion. Since the access control terminal does not have a wireless module and wired cracking requires connecting the circuit, technical intrusion also requires disassembling the access control terminal.
[0033] Test Method: 1. Try to prevent the anti-tampering sensor 13 from alarming with a thin steel sheet, and use pliers, a flat screwdriver, a plastic pry bar, and a steel pry bar to perform brute force cracking from the four gaps at the joint of the terminal bottom plate 1 and the terminal panel 2; 2. Soften the outer shell by heating.
[0034] Table 1 shows the record of the security test situation.
[0035] Table 1
[0036] Disassembly method Number of tests Test results Brute force cracking 8 Tamper-proof sensor alarm Heat to soften the casing 3 Access control terminal offline alarm
[0037] The liquid crystal screen, outer shell, pick-up, speaker and self-locking mechanism of the access control terminal were damaged by brute force disassembly, but the anti-tampering sensor 13 always alarmed. The heat generated by heating caused the access control terminal to crash, and the server sent an alarm that the access control terminal was offline. Therefore, all disassembly attempts were unsuccessful. The test results strongly prove that the present invention can effectively prevent security problems such as illegal intrusion and seamless door opening, and the security has been greatly improved.
[0038] Reliability Test: Long-term reliability tests were carried out on the access control terminal of the embodiment, including testing the long-term continuous operation and the influence of interference on the working state of the access control terminal.
[0039] Test method: After installing the access control terminal, continuously operate it for 45 days (1090 h) to test its working state. Set two groups of interfering objects at a position 0.3 m away from the access control terminal to interfere with the access control terminal. The interfering objects are a walkie-talkie with a transmitting power of 10 W and a communication jammer with a power of 50 W, and test whether it has an impact on the working state.
[0040] Table 2 is the record of the reliability test situation.
[0041] Table 2
[0042] Continuous working time 0.5h 3h 1090h No interfering objects Normal operation Normal operation Normal operation 10W walkie-talkie Normal operation Normal operation Normal operation 50W communication jammer Normal operation Normal operation Normal operation
[0043] The test results show that the present invention can operate stably and reliably, fully meeting the requirements of practical applications.
[0044] Waterproofness test: The waterproofness test was carried out on the access control terminal of the embodiment. After continuously showering the access control terminal for a period of time, check whether it can work normally.
[0045] Test method: Take a Φ16 mm hose to connect to tap water, and use a shower head to spray water on the powered-on access control terminal. Continuously spray at an angle of 45° from a height of 0.5 m above the access control terminal, and observe whether the access control terminal can work normally after a period of time.
[0046] Table 3 is the record of the waterproofness test situation.
[0047] Table 3
[0048] Showering time 30 min 1h 2h Test results Normal operation Normal operation Normal operation
[0049] The test results show that the present invention has excellent waterproof performance and can operate stably in a humid environment.
[0050] Finally, it should be noted that in the description of the present utility model, the orientation or positional relationship indicated by the terms "vertical", "upper", "lower", "horizontal", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.
[0051] In the description of the present utility model, it should also be noted that, unless otherwise clearly specified and defined, the terms "arranged", "installed", "connected" and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0052] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.
Claims
1. Door access terminal anti-disassembly device, comprising a terminal bottom plate (1) installed outside the door and a terminal panel (2) detachably connected to the terminal bottom plate (1), a terminal inner cavity (3) is formed between the terminal bottom plate (1) and the terminal panel (2), and it is characterized in that: A self-locking bolt is provided inside the terminal panel (2). An elastic member (4) and a positioning member (9) that restricts the elastic member (4) from detaching from the self-locking bolt are sequentially sleeved on the self-locking bolt from bottom to top. The elastic member (4) is in a compressed state, and the elastic member (4) exerts a force on the self-locking bolt towards the bottom end of the terminal panel (2). The lower ends of the terminal base plate (1) and the terminal panel (2) are fastened by the self-locking bolt. A driving device for driving the self-locking bolt to move to disconnect the terminal base plate (1) and the terminal panel (2) is provided inside the access control cavity.
2. The anti-disassembly device for the access control terminal according to claim 1, wherein: The terminal panel (2) is fixedly connected to a bracket (5). The bracket (5) is slidably connected to the self-locking bolt. A convex edge (6) is fixedly connected to the bottom end of the terminal base plate (1). A lock groove (61) is formed upward in the convex edge (6). The self-locking bolt includes a locking tongue (71) and a locking handle (72) that are fixedly connected to each other. When the terminal panel (2) and the terminal base plate (1) are fastened, the locking tongue (71) penetrates into the lock groove (61).
3. The anti-disassembly device for the access control terminal according to claim 2, wherein: The elastic member (4) is sleeved on the locking handle (72). The driving device includes a one-way electromagnet (8) disposed between the elastic member (4) and the positioning member (9).
4. The anti-disassembly device for an access control terminal according to claim 3, characterized in that: When the one-way electromagnet (8) is not energized, the elastic member (4) is in a compressed state, and the elastic member (4) exerts a force on the locking tongue (71) towards the direction close to the lock groove (61). When the one-way electromagnet (8) is energized, it exerts a force on the locking tongue (71) to move in the direction away from the lock groove (61).
5. The anti-disassembly device for the access control terminal according to claim 2, wherein: The locking handle (72) is fixedly connected to an anti-fooling wire (10). A wire passing hole (11) is formed at the middle position of the terminal base plate (1). A slip ring (12) is provided inside the access control cavity. The anti-fooling wire (10) passes through the slip ring (12) and then passes out through the wire passing hole (11).
6. The anti-disassembly device for the access control terminal according to claim 5, wherein: An anti-disassembly sensor (13) is installed inside the terminal panel (2). When the terminal panel (2) is illegally disassembled, the anti-disassembly sensor (13) triggers an alarm signal.
7. The anti-disassembly device for the access control terminal according to claim 1, wherein: A panel hook is fixedly connected to the position of the terminal panel (2) close to the top. A card slot (14) is formed at the position of the terminal base plate (1) close to the top. The upper ends of the terminal base plate (1) and the terminal panel (2) are snap-fastened by the panel hook and the card slot (14).
8. The anti-disassembly device for the access control terminal according to claim 1, wherein: A plurality of fixing holes (15) are formed in the terminal base plate (1).