Building security access control device
By using a fixed backplate connected to the access control intercom's slot and latch assembly in the building security access control device, the time-consuming and labor-intensive problems of the existing technology are solved, enabling quick disassembly and installation of the intercom and improving maintenance efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HANGZHOU ANGUANG ELECTRONIC EQUIPMENT CO LTD
- Filing Date
- 2025-05-28
- Publication Date
- 2026-05-05
AI Technical Summary
The existing building video intercom system requires tools to remove and install bolts during installation and maintenance, which is time-consuming and labor-intensive.
A building security access control device was designed, which uses a fixed back plate to connect with the access control intercom's slot and locking tongue assembly. The intercom can be quickly disassembled and installed using a special wrench.
It simplifies the disassembly and assembly process of walkie-talkies, saves time and effort, facilitates repair and replacement, and improves maintenance efficiency.
Smart Images

Figure CN224203717U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of access control equipment technology, specifically a building security access control device. Background Technology
[0002] With the increasing number of modern residential communities, building access control intercom systems have gradually entered people's lives. Building video intercom main units have become an indispensable part of building access control intercom systems. Building doors are usually locked to prevent unauthorized personnel from entering the building. Residents can freely enter and exit using keys or passwords. When a visitor arrives, they need to enter the room number of the resident they are visiting on the keypad of the access control video intercom main unit outside the building door. After confirming the visitor's identity through dialogue and video images, the resident manager allows the visitor to enter.
[0003] Currently, most building video intercom systems are fixed to the downstairs door using multiple bolts or other fasteners during installation. Over time, these systems inevitably experience malfunctions, requiring them to be removed from the door for repairs and then reinstalled. Each disassembly and reassembly requires tools to remove and install the bolts and other fasteners, which is time-consuming and labor-intensive. Utility Model Content
[0004] This utility model provides a building security access control device to solve the problems in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a building security access control device, including a fixed back plate and an access control intercom, wherein the fixed back plate is provided with a slot and a keyhole is provided on the side wall of the slot, the access control intercom is inserted into the slot, and the access control intercom is provided with an assembly compartment inside, wherein a locking tongue assembly is installed in the assembly compartment, and the head end of the locking tongue assembly extends outward from the assembly compartment and engages with the keyhole;
[0006] The access control intercom includes a housing and a control motherboard. The control motherboard is installed in the housing and is equipped with a camera module, a display screen, a numeric keypad module, an ID card reader, a microphone, and a speaker.
[0007] The locking tongue assembly includes a dial, a locking plate, a spring, and a special wrench. The dial and the locking plate are both provided with toothed grooves, which are connected to each other through interlocking. The tail end of the locking plate is connected to a spring. The dial is provided with a box-shaped socket, and the special wrench is inserted into the box-shaped socket.
[0008] Furthermore, the fixed back plate is riveted with internally threaded posts, which are located around it.
[0009] Furthermore, the camera module and display screen are located at the top of the access control intercom, the digital keypad module is located in the middle of the access control intercom, and the ID card reader, microphone, and speaker are located at the bottom of the access control intercom.
[0010] Furthermore, the lower part of the housing is provided with a sound hole, and the microphone and speaker are respectively located at the sound hole.
[0011] Furthermore, the lower part of the outer casing is provided with a through hole, and the through hole corresponds to the position of the plum blossom socket.
[0012] Furthermore, the dial is mounted in the assembly chamber via a bearing, and one end of the spring is fixed to the inner wall of the assembly chamber.
[0013] Furthermore, the inner wall of the assembly compartment is provided with a strip-shaped hole, and the side wall of the locking plate is provided with a limiting post, which is movably engaged in the strip-shaped hole.
[0014] Compared with the prior art, this utility model provides a building security access control device, which has the following features:
[0015] Beneficial effects:
[0016] This building security access control device has a pre-installed backplate on the wall. The intercom is inserted into the slot of the backplate, and the head of the latch assembly is engaged with the keyhole, thus locking the intercom to the backplate. When disassembly and maintenance are required, simply insert a special wrench into the mortise and tenon joint, turn the dial to retract the lock plate and separate it from the keyhole, and the intercom will slide out of the slot. This saves time and effort and facilitates future maintenance and replacement of the building access control system. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the structure of this utility model;
[0018] Figure 2 This is a side view of the present invention;
[0019] Figure 3 This is a cross-sectional view of the access control intercom of this utility model;
[0020] Figure 4 This is a side sectional view of the assembly compartment of this utility model.
[0021] In the diagram: 1. Fixed back plate; 11. Card slot; 12. Keyhole; 13. Internal threaded post; 2. Access control intercom; 21. Housing; 22. Control motherboard; 23. Camera module; 24. Display screen; 25. Numeric keypad module; 26. ID card reader; 27. Microphone; 28. Speaker; 29. Sound hole; 210. Through hole; 3. Assembly compartment; 31. Strip hole; 4. Lock tongue assembly; 41. Dial wheel; 42. Lock plate; 43. Spring; 44. Special wrench; 45. Toothed groove; 46. Torx socket; 47. Limit post. Detailed Implementation
[0022] 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.
[0023] Please see Figures 1-4 This utility model discloses a building security access control device, including a fixed back plate 1 and an access control intercom 2. The fixed back plate 1 is provided with a slot 11, and a keyhole 12 is provided on the side wall of the slot 11. The access control intercom 2 is inserted into the slot 11, and the inside of the access control intercom 2 is provided with an assembly compartment 3. A latch assembly 4 is installed in the assembly compartment 3. The head end of the latch assembly 4 extends outward from the assembly compartment 3 and engages with the keyhole 12, thus securing the fixed back plate 1. When installed on the wall, the intercom 2 is inserted into the slot 11 of the fixed back plate 1, and the head of the latch assembly 4 is engaged in the keyhole 12, thereby locking the intercom 2 to the fixed back plate 1. When disassembly and maintenance are required, simply insert the special wrench 44 into the plum blossom socket 46, turn the dial 41 to make the lock plate 42 retract and separate from the keyhole 12, and the intercom 2 can slide out from the slot 11. This saves time and effort and facilitates the maintenance and replacement of the building access control system in the future.
[0024] The access control intercom 2 includes a housing 21 and a control motherboard 22. The control motherboard 22 is installed in the housing 21 and is equipped with a camera module 23, a display screen 24, a numeric keypad module 25, an ID card reader 26, a microphone 27 and a speaker 28.
[0025] The locking tongue assembly 4 includes a dial 41, a locking plate 42, a spring 43, and a special wrench 44. The dial 41 and the locking plate 42 are both provided with toothed grooves 45, and are connected to each other through the toothed grooves 45. The tail end of the locking plate 42 is connected to the spring 43. The dial 41 is provided with a plum blossom socket 46, and the special wrench 44 is inserted into the plum blossom socket 46.
[0026] Specifically, the fixed back plate 1 is riveted with internal threaded posts 13, and the internal threaded posts 13 are located around it.
[0027] In this embodiment, the internally threaded post 13 is used to engage with screws to pre-install the fixing back plate 1 onto the wall.
[0028] Specifically, the camera module 23 and the display screen 24 are located at the top of the access control intercom 2, the digital keypad module 25 is located in the middle of the access control intercom 2, and the ID card reader 26, microphone 27 and speaker 28 are located at the bottom of the access control intercom 2.
[0029] In this implementation plan, the access control intercom 2 is an intercom system installed on the access control system, capable of video calls. Visitors can conveniently call residents and have video conversations with them through the main unit in front of the unit door downstairs. Residents control the opening and closing of the control door from inside their units. The main unit of the community can receive alarm signals from residents at any time and transmit them to the duty main unit to notify the community security personnel. The system not only enhances the security of high-rise residential buildings but also greatly facilitates residents, reducing many unnecessary inconveniences of going up and down stairs. The access control intercom 2 is a commonly used security device, mainly used for access control management and security monitoring. Due to its wide application, it will not be described in detail here, but only the functions of the built-in modules will be briefly described. The camera module 23 is responsible for capturing image information outside the door and transmitting it to the indoor split screen or mobile APP for users to view. Residents can verify the identity of visitors to ensure that only authorized personnel are allowed to enter. Personnel can enter, and the camera can also perform video surveillance, recording the activities in front of the door to provide evidence for subsequent security checks. The door is opened only after the visitor's identity is confirmed. The display screen 24 is used to display facial, card, password and other identification information to ensure that users can clearly see the identification results and proceed to the next step. Through the built-in camera module 23 and microphone 27, the display screen 24 supports video calls and voice communication with visitors. Users can remotely confirm the visitor's identity and communicate in real time. The numeric keypad module 25 is used to input numbers or execute corresponding functions. Generally, numeric keys 1-9 are used to select the corresponding channel or function, and numeric key 0 is used to turn on the power or turn off the intercom. The ID card reader 26 is mainly used to read ID card information and verify identity through the access control system to control the opening or closing of the door.
[0030] Specifically, the lower part of the outer casing 21 is provided with a sound hole 29, and the microphone 27 and the speaker 28 are respectively located at the position of the sound hole 29.
[0031] In this embodiment, the sound hole 29 is mainly used for sound transmission. It allows sound signals to pass through, ensuring that the user can clearly hear the visitor's voice, while the visitor can also hear the user's response.
[0032] Specifically, the lower part of the outer shell 21 is provided with a through hole 210, and the through hole 210 corresponds to the position of the plum blossom socket 46.
[0033] In this embodiment, the through hole 210 is a clearance structure to facilitate the insertion of the special wrench 44 into the Torx socket 46.
[0034] Specifically, the dial 41 is mounted in the assembly chamber 3 via a bearing, and one end of the spring 43 is fixed to the inner wall of the assembly chamber 3.
[0035] In this embodiment, when the dial 41 is rotated, the lock plate 42 can be retracted and separated from the keyhole 12, thereby allowing the access control intercom 2 to slide out of the slot 11.
[0036] Specifically, the inner wall of the assembly chamber 3 is provided with a strip hole 31, and the side wall of the locking piece 42 is provided with a limiting post 47, which is movably engaged in the strip hole 31.
[0037] In this embodiment, the locking piece 42 has reliable connectivity through the cooperation between the limiting post 47 and the strip hole 31.
[0038] When in use, the fixed back plate 1 is pre-installed on the wall, the access control intercom 2 is inserted into the slot 11 of the fixed back plate 1, and the head of the locking tongue assembly 4 is engaged in the keyhole 12, thereby locking the access control intercom 2 and the fixed back plate 1. When disassembly and maintenance are required, simply insert the special wrench 44 into the plum blossom socket 46, turn the dial 41 to make the locking plate 42 retract and separate from the keyhole 12, and the access control intercom 2 can slide out from the slot 11. This saves time and effort and facilitates the maintenance and replacement of the building access control system in the future.
[0039] In summary, this building security access control device pre-installs the fixed backplate 1 onto the wall, inserts the access control intercom 2 into the slot 11 of the fixed backplate 1, and engages the head of the latch assembly 4 into the keyhole 12, thereby locking the access control intercom 2 to the fixed backplate 1. When disassembly and maintenance are required, simply insert the special wrench 44 into the Phillips head socket 46, rotate the dial 41 to retract the locking plate 42 and separate it from the keyhole 12, and the access control intercom 2 will slide out of the slot 11. This saves time and effort and facilitates future maintenance and replacement of the building access control system.
[0040] 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 building security access control device, comprising a fixed backplate (1) and an access control intercom (2), characterized in that: The fixed back plate (1) is provided with a slot (11), and the side wall of the slot (11) is provided with a keyhole (12). The access control intercom (2) is inserted into the slot (11), and the access control intercom (2) is provided with an assembly compartment (3). The assembly compartment (3) is equipped with a latch assembly (4). The head end of the latch assembly (4) extends outward from the assembly compartment (3) and is inserted into the keyhole (12). The access control intercom (2) includes a housing (21) and a control motherboard (22). The control motherboard (22) is installed in the housing (21) and is equipped with a camera module (23), a display screen (24), a digital keypad module (25), an ID card reader (26), a microphone (27), and a speaker (28). The locking tongue assembly (4) includes a dial (41), a locking plate (42), a spring (43), and a special wrench (44). The dial (41) and the locking plate (42) are both provided with toothed grooves (45), and are connected to each other through the toothed grooves (45). The tail end of the locking plate (42) is connected to the spring (43). The dial (41) is provided with a plum blossom socket (46), and the special wrench (44) is inserted into the plum blossom socket (46).
2. The building security access control device according to claim 1, characterized in that: The fixed back plate (1) is riveted with internal threaded posts (13), and the internal threaded posts (13) are located around it.
3. The building security access control device according to claim 1, characterized in that: The camera module (23) and display screen (24) are located at the top of the access control intercom (2), the digital keypad module (25) is located in the middle of the access control intercom (2), and the ID card reader (26), microphone (27) and speaker (28) are located at the bottom of the access control intercom (2).
4. The building security access control device according to claim 1, characterized in that: The lower part of the outer casing (21) is provided with a sound hole (29), and the microphone (27) and the speaker (28) are respectively located at the position of the sound hole (29).
5. A building security access control device according to claim 1, characterized in that: The lower part of the outer shell (21) is provided with a through hole (210), and the through hole (210) corresponds to the position of the plum blossom socket (46).
6. A building security access control device according to claim 1, characterized in that: The dial (41) is mounted in the assembly chamber (3) via a bearing, and one end of the spring (43) is fixed to the inner wall of the assembly chamber (3).
7. A building security access control device according to claim 1, characterized in that: The inner wall of the assembly chamber (3) is provided with a strip hole (31), and the side wall of the locking piece (42) is provided with a limiting post (47), and the limiting post (47) is movably inserted into the strip hole (31).