Intelligent mechanical door lock

Abstract

The utility model provides a kind of intelligent mechanical door lock belongs to mechanical door lock technical field, this intelligent mechanical door lock includes shell, control module, driving mechanism and protective storehouse subassembly;Shell is divided into detachable upper part and lower part, both are open sleeve structure, and the both are connected by guide shaft or clamping groove, and the top surface of junction is equipped with the first semicircular groove and the second semicircular groove of equal radius, the first semicircular groove is located upper part, and the second semicircular groove is located lower part, and the bottom surface is equipped with the first slot and the second slot of equal width, for avoiding mechanical lock original accessory;Upper part is built-in control module, and outside is equipped with operating panel, and top is equipped with battery box and USB charging port, and bottom is electrically connected with upper part driving mechanism by cable hole;Upper part includes decorative sealing plate and movement support, and movement support is integrated with driving mechanism;Protective storehouse subassembly is embedded in the top surface of upper part, solve the problem that traditional intelligent lock installation is complex, and compatibility is poor.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical door lock technology, and more specifically, relates to an intelligent mechanical door lock. Background Technology

[0002] Intelligent mechanical door locks are a product of the integration of traditional mechanical locks and electronic information technology. They aim to endow mechanical locks with intelligent functions such as remote control, password recognition, and status monitoring by adding electronic control modules, communication components, and sensors. Their core principle is to retain the physical structure of the original mechanical lock cylinder and drive its rotation through external devices, achieving a composite mode of "mechanical lock body + electronic control." These products inherit the stable and reliable characteristics of mechanical locks while overcoming the shortcomings of traditional mechanical locks, such as easy key duplication and limited operation. They are widely used in homes, offices, and public facilities.

[0003] Despite technological advancements in smart mechanical door locks, existing solutions still suffer from several significant drawbacks: Traditional solutions typically require a complete replacement of the existing mechanical lock's lock body, cylinder, and interior panel, necessitating professional disassembly of the old lock, re-drilling, and adjustment of the new lock. This process involves complex mechanical adaptations and circuit modifications, resulting in lengthy installation times and high material costs. For renters or residents of older buildings, such modifications may damage the original door structure or even prevent installation due to lock incompatibility. Some products rely excessively on electronic systems and lack mechanical backup mechanisms. When the battery runs out, the motor malfunctions, or the communication module fails, users may be unable to unlock the door, potentially posing safety hazards in emergency situations such as fires or first aid. Furthermore, traditional protective structures (such as plastic protective covers) have weak impact resistance, making them highly vulnerable to forced entry. Utility Model Content

[0004] In view of this, the present invention provides an intelligent mechanical door lock that solves the problem that traditional intelligent locks require a complete replacement of the original mechanical lock structure, resulting in complex installation and poor compatibility.

[0005] This utility model is implemented as follows: This utility model provides an intelligent mechanical door lock, which includes a shell, a control module, a drive mechanism, and a protective compartment assembly; The housing is divided into a detachable upper part and a lower part, both of which are open sleeve structures. The two are connected by a guide shaft or a slot. The top surface of the connection point is provided with a first semicircular groove and a second semicircular groove with equal radii. The first semicircular groove is located in the upper part, and the second semicircular groove is located in the lower part. The bottom surface is provided with a first slot and a second slot with equal width to avoid the original mechanical lock accessories. The upper part has a built-in control module, an operation panel on the outside, a battery box and a USB charging port on the top, and is electrically connected to the upper drive mechanism through a cable hole at the bottom. The upper part includes a decorative panel and a movement support, with the drive mechanism integrated within the movement support; The protective compartment assembly is embedded in the top surface of the upper part, including the protective compartment body with hooks. The hooks at the bottom of the protective compartment are inserted into the arc grooves set around the openings on the top surface of the upper part, and a mechanical combination lock is provided on the outside of the protective compartment.

[0006] The technical effects of the intelligent mechanical door lock provided by this utility model are as follows: The upper and lower parts of the alloy shell are connected by a guide shaft / slot to form an open sleeve structure, which can be directly inserted into the gap between the mechanical lock and the door panel without damaging the original lock body. The semi-circular groove on the top surface and the slot design on the bottom surface can avoid the mechanical lock installation screws, lock cylinder and other accessories. The protective compartment integrates a mechanical combination lock, fingerprint sensor and camera to realize triple verification of "password + fingerprint + visual monitoring".

[0007] Based on the above technical solution, the intelligent mechanical door lock of this utility model can be further improved as follows: The upper and lower parts of the housing are fixed by screws on the interior door panel. After the screws are tightened, the upper and lower parts of the housing are pressed into the gap between the mechanical lock and the door panel, and the edge of the housing is pressed by the edge of the mechanical lock to fix it.

[0008] The advantages of adopting the above-mentioned improved solution are as follows: the radii of the semi-circular grooves (first / second semi-circular grooves) at the connection between the upper and lower shells are equal, and the widths of the slots (first / second slots) are matched, ensuring a tight fit after installation and preventing shaking. The slot design avoids the original mounting screws, anti-theft pins, and other components of the mechanical lock, eliminating the need for additional modifications to the door panel or lock.

[0009] Furthermore, the operation panel integrates a touch keyboard, an RFID card sensing area, a display, and a facial recognition camera. The operation panel is fixed to the upper housing by clips or screws, and the display and touch keyboard are arranged at an angle.

[0010] Furthermore, the drive motor is connected to a reduction gear set through a worm gear transmission mechanism. The worm axis is perpendicular to the turbine axis, and the turbine drives the reduction gear through an intermediate gear, thereby causing the drive gear to rotate.

[0011] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the protective chamber is made of metal, and the bottom hook is a long strip protrusion that can be inserted into the arc groove and rotated to lock, thereby improving the ability to resist external damage.

[0012] Furthermore, the drive mechanism includes a drive motor, a worm gear, a worm wheel, a reduction gear set, and a drive gear. The center of the drive gear is concentric with the keyhole of the mechanical lock cylinder and is connected to the mechanical key through a key bracket.

[0013] Furthermore, the protective compartment body is a cylindrical metal compartment with a latch on the right side. Pushing it to the left allows it to be inserted into the upper housing. The mechanical combination lock of the protective compartment integrates a semiconductor fingerprint sensor, a human proximity sensor, and a visible light or infrared camera. The camera inside the protective compartment faces the direction of the mechanical keyhole, and the human proximity sensor is located at the top of the protective compartment.

[0014] The beneficial effects of adopting the above-mentioned improved solution are as follows: the face recognition camera and the visible light / infrared light camera are integrated at the front end of the protective compartment to form a binocular vision module for light-adaptive recognition. The control module integrates a WiFi communication module, which is connected to the sensors inside the protective compartment through a cable hole, supporting remote unlocking and status monitoring via a mobile APP.

[0015] The combination lock is linked to the control panel via levers, buttons, and control devices. It supports both electronic combination unlocking and retains the emergency function of the mechanical key to ensure availability in extreme situations.

[0016] Furthermore, the lithium battery is connected to a USB charging port via a charging circuit, which integrates an overcharge protection module. The battery case cover is fixed to the top of the upper housing via a snap-fit ​​mechanism.

[0017] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the key drive gear inside the protective compartment is coaxially set with the mechanical lock keyhole, and dual-mode unlocking can be achieved by electronically controlling the gear rotation or manually inserting the key.

[0018] Furthermore, the mechanism support is divided into upper and lower parts. The upper part of the housing is inserted through a slot, and the inner wall of the support is provided with a guide shaft hole, which cooperates with the guide shaft of the housing for fixation.

[0019] Furthermore, a waterproof cover is provided on the top surface of the upper part to cover the top of the drive mechanism. The edge of the waterproof cover is fixed to the housing by a pressure plate to prevent water vapor from entering.

[0020] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: when the control board is driven to rotate by the combination lock, the protrusion abuts against the protective compartment baffle to prevent the protective compartment from rotating in the opposite direction and ensure that the unlocking process is unidirectionally controllable.

[0021] Furthermore, the rear of the housing is provided with two circular openings for aligning with the original mounting holes of the mechanical lock.

[0022] The beneficial effects of adopting the above-mentioned improvement scheme are: the semi-circular groove at the connection position of the upper and lower shells is precisely matched with the slot, and the guide shaft is used for positioning during installation to avoid interference of accessories or functional failure due to misalignment.

[0023] Compared with existing technologies, the advantages of the intelligent mechanical door lock provided by this utility model are: This utility model systematically solves the technical pain points of traditional intelligent mechanical door locks through four core innovations: open sleeve structure, adjustable center distance design, dual mechanical and electronic safety mechanism, and modular integration. Its beneficial effects are as follows: No disassembly or modification required for installation, significantly reducing costs and barriers to entry: The controller housing adopts an open-sleeve structure with upper and lower sections, connected by two guide shafts to form a whole. During installation, the housing can be directly inserted into the gap between the mechanical lock handle panel and the door panel, without the need to disassemble the original lock body, lock cylinder, or panel. This design avoids the damage to the door structure caused by traditional solutions; The position of the opening on the lower top surface can be adjusted within the range of 50-92mm from the center of the semi-circular groove. Combined with the multi-specification design of the arc groove, and the fact that the first and second semi-circular grooves (equal radii) and the first and second slots (matching widths) at the housing connection form an "avoidance structure," effectively avoiding through-hole components such as mechanical lock mounting screws, anti-theft pins, and square iron bars. This ensures that regardless of the lock's internal structure, the device can be quickly positioned and installed. This "plug-and-play" characteristic significantly improves the product's versatility, making it particularly suitable for scenarios such as bulk property renovations and intelligent upgrades of rental housing. Dual security mechanisms enhance protection: The protective compartment is a cylindrical metal structure with a long hook and a barrier at the bottom. The hook inserts into the upper arc groove and rotates to lock, forming a mechanical lock. The barrier abuts against a protruding part of the control board; only when the correct combination lock is entered will the control board rotate around its axis, disengaging the protruding part from the barrier, thus unlocking the protective compartment. This design requires unauthorized opening to bypass both the "password verification" and "physical locking" barriers. The rear end of the control board abuts against the battery compartment cover control lever, and the electronic system can monitor the lock cylinder's movement in real time via the rotation of the drive gears (e.g., feedback from photoelectric sensors). In case of abnormal unlocking (e.g., 5 consecutive incorrect password attempts), the system automatically locks the protective compartment and triggers an alarm, while simultaneously sending a notification to the user via WiFi. A mechanical lock keyhole is retained inside the protective compartment; if the electronic module fails, the user can unlock the compartment with the correct password and manually unlock it using the mechanical key, ensuring usability even in extreme situations. Optimized ease of operation and maintenance efficiency: The combination lock achieves a single-step "verify-unlock" operation via a lever and button, and the rotation of the control panel drives the protective compartment movement intuitively and easily. The battery cover is fixed to the bottom surface of the lower part with a clip, eliminating the need for tools when replacing the battery; the control panel, combination lock, and other components are connected to the housing via slots, supporting individual disassembly and maintenance; Structural innovation enhances reliability: The control panel is linked to the combination lock via a rotating shaft, and the protrusion precisely abuts against the protective compartment's retaining surface, preventing key breakage or lock cylinder damage due to excessive twisting; a pressure plate on the top surface of the upper part secures the battery cover and drive mechanism, and combined with a waterproof and dustproof design, it can operate stably in environments with varying temperatures and humidity, covering scenarios with different climates in the north and south. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model 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.

[0025] Figure 1 This is an example diagram of a smart mechanical door lock; Figure 2 This is a rear view of an intelligent mechanical door lock; Figure 3 A diagram of a component for a smart mechanical door lock without a protective compartment; Figure 4 This is an example diagram of the internal drive mechanism of the upper part of this utility model; The attached diagram lists the components represented by each number as follows: 10. Housing; 11. Upper part; 111. First semicircular groove; 112. Operation panel; 113. Waterproof cover; 114. Mechanism support; 12. Lower part; 121. Second semicircular groove; 20. Drive mechanism; 21. Drive motor; 22. Battery box cover; 30. Protective compartment assembly. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0027] like Figures 1-4 The image shown is a first embodiment of an intelligent mechanical door lock provided by this utility model. In this embodiment, it includes a housing 10, a control module, a drive mechanism 20, and a protective chamber assembly 30. The housing 10 is divided into a detachable upper part 11 and a lower part 12, both of which are open sleeve structures. The two are connected by a guide shaft or a slot. The top surface of the connection is provided with a first semicircular groove 111 and a second semicircular groove 121 with equal radii. The first semicircular groove 111 is located in the upper part 11, and the second semicircular groove 121 is located in the lower part 12. The bottom surface is provided with a first slot and a second slot with equal width to avoid the original mechanical lock accessories. The upper part has a built-in control module, an operation panel 112 on the outside, a battery box and a USB charging port on the top, and is electrically connected to the drive mechanism 20 of the upper part 11 through a cable hole at the bottom. The upper part 11 includes a decorative panel and a movement bracket 114, the movement bracket 114 of which integrates a drive mechanism 20; The protective compartment assembly 30 is embedded in the top surface of the upper part 11, including the protective compartment body with hooks. The bottom hook of the protective compartment is inserted into the arc groove around the opening on the top surface of the upper part 11, and a mechanical combination lock is provided on the outside of the protective compartment.

[0028] The mechanical combination lock is linked to the protective compartment body. When the password is correct, the control plate rotates around the rotating axis, and the protrusion disengages from the protective compartment's blocking surface, allowing the protective compartment to move to the left and be removed.

[0029] In the above technical solution, the upper part 11 and the lower part 12 of the housing are fixed by screws on the interior door panel. After the screws are tightened, the upper and lower parts of the housing 10 are pressed into the gap between the mechanical lock and the door panel, and the edge of the housing 10 is pressed by the edge of the mechanical lock to fix it.

[0030] Furthermore, in the above technical solution, the operation panel 112 integrates a touch keyboard, an RFID card sensing area, a display, and a face recognition camera. The operation panel 112 is fixed to the upper part 11 housing by buckles or screws, and the display and touch keyboard are arranged at an angle.

[0031] The touch keyboard can be a capacitive touch keyboard, and the RFID card sensing area can use an RC522 RFID module, such as those used for common access cards and public transport cards, to achieve card-swiping unlocking functionality. The display can be a TFT LCD screen, and the facial recognition camera can be an Orbbec Astra Mini 3D camera.

[0032] Furthermore, in the above technical solution, the drive mechanism 20 includes a drive motor 21, a worm gear, a turbine, a reduction gear set, and a drive gear. The center of the drive gear is concentric with the keyhole of the mechanical lock cylinder and is connected to the mechanical key through a key bracket.

[0033] Furthermore, in the above technical solution, the drive motor 21 is connected to the reduction gear set through a worm gear transmission mechanism. The worm axis is perpendicular to the turbine axis, and the turbine drives the reduction gear through an intermediate gear, thereby causing the drive gear to rotate.

[0034] The drive motor, serving as the power source, is securely mounted in a specific position within the mechanism's support frame. Its output shaft is connected to one end of a worm gear. The worm gear is a slender rod with helical teeth on its surface, meshing with the worm wheel, their axes perpendicular to each other. When the drive motor starts, the output shaft drives the worm gear to rotate at high speed, and the worm gear teeth push the worm wheel to rotate slowly, achieving the first reduction in speed and torque increase. The worm wheel's output shaft is connected to the starting gear in the reduction gear set. The reduction gear set consists of multiple meshing gears of different specifications. By using different gear ratios, the rotational speed is further reduced and the torque increased. Finally, the ending gear of the reduction gear set is connected to the drive gear. The drive gear is designed to be concentric with the keyhole of the mechanical lock cylinder, and is securely connected to the mechanical key via a key holder, transmitting torque to the mechanical key, thereby driving the lock cylinder to rotate and achieve the locking or unlocking action.

[0035] Furthermore, in the above technical solution, the protective compartment body is a cylindrical metal compartment with a latch on the right side. Pushing it to the left can latch into the upper part 11 shell. The mechanical combination lock of the protective compartment integrates a semiconductor fingerprint sensor, a human proximity sensor, and a visible light or infrared light camera. The camera inside the protective compartment faces the direction of the mechanical keyhole, and the human proximity sensor is located at the top of the protective compartment.

[0036] Regarding sensor and camera configurations, the integrated semiconductor fingerprint sensor on the inside of the mechanical combination lock can be a model such as FPC1020. For the human proximity sensor, a pyroelectric infrared sensor like the HC-SR501 can be used. This sensor can sensitively detect infrared radiation emitted by the human body and quickly trigger a signal when a person approaches within a set distance (generally adjustable from 1-10 meters), allowing the system to respond in advance, such as waking up relevant devices or turning on lighting. For visible light cameras, the Logitech C920 can be selected, clearly capturing the scene in front of the door. If an infrared camera is chosen, the Hikvision DS-2CD3T47WD-L day / night infrared camera is more suitable. In nighttime or low-light environments, it can provide clear imaging through infrared supplementary lighting, offering reliable security monitoring.

[0037] Furthermore, in the above technical solution, the lithium battery is connected to the USB charging port through a charging circuit, the charging circuit integrates an overcharge protection module, and the battery box cover 22 is fixed to the top of the upper part 11 housing by a buckle.

[0038] Furthermore, in the above technical solution, the movement bracket 114 is divided into upper and lower parts. The upper part 11 housing is inserted through a slot. The inner wall of the bracket is provided with a guide shaft hole, which cooperates with the guide shaft of the housing 10 for fixation.

[0039] Furthermore, in the above technical solution, a waterproof cover 113 is provided on the top surface of the upper part 11 to cover the top of the drive mechanism. The edge of the waterproof cover 113 is fixed to the housing 10 by a pressure plate to prevent water vapor from entering.

[0040] Furthermore, in the above technical solution, the rear of the housing 10 is provided with two circular openings for aligning with the original mounting holes of the mechanical lock.

[0041] Specifically, the principle of this utility model is as follows: Based on the split-type open sleeve structure design of the controller housing, its upper and lower parts are connected by a guide shaft to form a whole. It can be inserted through the gap between the mechanical lock handle panel and the door panel. The top semi-circular groove and bottom slot avoid existing lock components. The adjustable opening position adapts to mechanical locks with different center distances, achieving installation without disassembly or modification. The hook at the bottom of the protective compartment is inserted into the upper arc groove and rotated to lock. Its blocking surface abuts against the protrusion of the control board to form a mechanical lock. When the combination lock is entered correctly, the lever drives the control device to rotate the control board around the rotation axis. The protrusion disengages from the blocking surface, unlocking the protective compartment and driving the internal key drive gear. Unlocking is achieved through electronic control of the gear rotation or manual mechanical key operation. The tail end of the control board simultaneously controls the opening permission of the battery compartment cover. The power module is fixed to the top surface of the upper part by the battery cover buckle. The control board integrated circuit module is connected to the housing through the slot, forming a triple collaborative mechanism of "mechanical limit + password verification + electronic drive". It retains the stability of mechanical lock, gives intelligent control function, and improves maintenance convenience through modular design.

Claims

1. An intelligent mechanical door lock, characterized in that, Includes housing, control module, drive mechanism, and protective enclosure components; The housing is divided into a detachable upper part and a lower part, both of which are open sleeve structures. The two are connected by a guide shaft or a slot. The top surface of the connection point is provided with a first semicircular groove and a second semicircular groove with equal radii. The first semicircular groove is located in the upper part, and the second semicircular groove is located in the lower part. The bottom surface is provided with a first slot and a second slot with equal width to avoid the original mechanical lock accessories. The upper part has a built-in control module, an operation panel on the outside, a battery box and a USB charging port on the top, and is electrically connected to the upper drive mechanism through a cable hole at the bottom. The upper part includes a decorative panel and a movement support, with the drive mechanism integrated within the movement support; The protective compartment assembly is embedded in the top surface of the upper part, including the protective compartment body with hooks. The hooks at the bottom of the protective compartment are inserted into the arc grooves set around the openings on the top surface of the upper part, and a mechanical combination lock is provided on the outside of the protective compartment.

2. The intelligent mechanical door lock according to claim 1, characterized in that, The upper and lower parts of the housing are fixed by screws on the interior door panel. After the screws are tightened, the upper and lower parts of the housing are pressed into the gap between the mechanical lock and the door panel, and the edge of the housing is pressed by the edge of the mechanical lock to fix it.

3. The intelligent mechanical door lock according to claim 2, characterized in that, The operation panel integrates a touch keyboard, an RFID card sensing area, a display, and a face recognition camera. The operation panel is fixed to the upper housing by buckles or screws, and the display and touch keyboard are arranged at an angle.

4. The intelligent mechanical door lock according to claim 3, characterized in that, The drive mechanism includes a drive motor, a worm gear, a worm, a reduction gear set, and a drive gear. The center of the drive gear is concentric with the keyhole of the mechanical lock cylinder and is connected to the mechanical key through a key bracket.

5. The intelligent mechanical door lock according to claim 4, characterized in that, The drive motor is connected to a reduction gear set through a worm gear transmission mechanism. The worm axis is perpendicular to the turbine axis. The turbine drives the reduction gear through an intermediate gear, thereby causing the drive gear to rotate.

6. The intelligent mechanical door lock according to claim 5, characterized in that, The protective compartment is a cylindrical metal compartment with a latch on the right side. Pushing it to the left will allow it to be inserted into the upper housing. The mechanical combination lock of the protective compartment integrates a semiconductor fingerprint sensor, a human proximity sensor, and a visible light or infrared camera. The camera inside the protective compartment faces the mechanical keyhole, and the human proximity sensor is located at the top of the protective compartment.

7. The intelligent mechanical door lock according to claim 6, characterized in that, The lithium battery is connected to the USB charging port via a charging circuit. The charging circuit integrates an overcharge protection module, and the battery case cover is fixed to the top of the upper housing with clips.

8. The intelligent mechanical door lock according to claim 7, characterized in that, The mechanism support is divided into upper and lower parts. The lower part of the housing is inserted through a slot. The inner wall of the support is provided with a guide shaft hole, which cooperates with the guide shaft of the housing for fixation.

9. The intelligent mechanical door lock according to claim 8, characterized in that, The upper part is provided with a waterproof cover on the top surface, which covers the top of the drive mechanism. The edge of the waterproof cover is fixed to the housing by a pressure plate to prevent water vapor from entering.

10. The intelligent mechanical door lock according to claim 9, characterized in that, The rear of the housing has two circular openings for aligning with the original mounting holes of the mechanical lock.

Images