Intelligent fingerprint lock
The robust battery board mounting structure and charging interface design solve the problems of battery replacement and power management in smart fingerprint locks, enabling convenient battery management and stable battery connection, thus improving the practicality and security of smart locks.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG YUNGUO SMART HOME CO LTD
- Filing Date
- 2025-05-15
- Publication Date
- 2026-05-12
AI Technical Summary
Existing smart fingerprint locks require users to replace batteries when the battery is low, and there is a self-discharge problem, which affects battery recycling and ease of operation.
It features a robust solar panel mounting structure and charging interface, supports solar panel replacement or charging, and is equipped with indicator lights to display the battery level, providing a convenient battery management method.
It improves the ease of battery installation and removal, ensures stable battery connection, avoids the smart lock becoming unusable due to insufficient power, and enhances both ease of use and security.
Smart Images

Figure CN224228417U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of smart locks, and more particularly to a smart fingerprint lock. Background Technology
[0002] A smart fingerprint lock is a modern door lock that integrates multiple advanced technologies. It mainly identifies fingerprints through two methods: optical fingerprint recognition and semiconductor fingerprint recognition. The lock contains an electronic chip and circuit board. When the fingerprint recognition module detects the correct fingerprint information, the electronic control system sends a signal to the actuator such as a motor or electromagnet to drive the lock cylinder to rotate, thereby unlocking the door.
[0003] In the existing technology, when the battery power inside the smart lock is insufficient, users often remove the old battery, replace it with a new one, and recharge the old battery to achieve the purpose of battery recycling. However, the old battery may self-discharge when stored after being fully charged, which will affect the battery recycling. Moreover, it is inconvenient for users to operate when replacing the battery, which will affect the practicality of the smart lock. Utility Model Content
[0004] To reduce the steps involved in replacing batteries and improve the practicality of smart locks, this application provides a smart fingerprint lock.
[0005] The intelligent fingerprint lock provided in this application adopts the following technical solution:
[0006] A smart fingerprint lock includes a main body, an outer handle mounted on one side of the main body, an inner handle mounted on the other side of the main body, and a lock body mounted inside the main body. The two ends of the lock cylinder inside the lock body are respectively connected to one end of the inner handle and one end of the outer handle. A fingerprint module is mounted on the outer handle. A mounting groove is provided on the side of the main body near the inner handle. A battery board is mounted on the inner wall of the mounting groove. Multiple positioning components for fixing the battery board are mounted on the inner side of the mounting groove. A cover plate for covering the mounting groove is connected to one side of the main body. A power connector connected to an internal circuit board is fixedly connected to the inner wall of the mounting groove. One end of the power connector is connected to the lower end of the battery board. An indicator light connected to the circuit board is mounted on one side of the main body.
[0007] By adopting the above technical solution, firstly, multiple positioning components can fix the battery panel inside the mounting slot, ensuring stable installation of the battery panel inside the lock body and guaranteeing the stability of the connection between the battery and the inner wall of the mounting slot; secondly, the design of the charging connector allows users to choose to replace the battery panel or charge it directly as needed, meeting user needs and improving the practicality of the smart fingerprint lock; thirdly, the indicator light can intuitively display the battery level, allowing users to understand the battery level in a timely manner and avoid the smart lock becoming unusable due to insufficient power.
[0008] Optionally, the positioning component includes a sliding plate, a locking block, and a return spring. The inner wall of the mounting groove is provided with a positioning groove for the sliding plate to slide. The locking block is fixedly connected to one side of the sliding plate and one end extends out of the positioning groove to abut against one side of the battery panel. The return spring is fixedly connected between the sliding plate and the inner wall of the positioning groove.
[0009] By adopting the above technical solution, the battery panel can be firmly fixed, preventing it from shaking or shifting in the mounting slot, ensuring the stability of the power connection, and improving the reliability and service life of the fingerprint lock. Moreover, the installation and removal process of the battery panel is more convenient and quick, and users can easily replace or repair the battery panel as needed, reducing maintenance costs and difficulty.
[0010] Optionally, a charging connector is fixedly connected to the upper side of the mounting slot, the lower end of the charging connector is connected to the upper end of the battery panel, and a charging interface is fixedly installed on the upper end of the charging connector.
[0011] By adopting the above technical solution, a convenient charging method can be provided for fingerprint locks. Users do not need to disassemble the battery board or the entire lock body. They can simply plug the charger into the charging port to charge the battery board, which improves the convenience of use. It can also ensure stable current transmission during the charging process, avoid charging failures or damage to the battery board due to poor contact, and improve the safety of charging.
[0012] Optionally, the upper end of the cover plate is provided with a positioning hole for the upper end of the charging connector to be inserted.
[0013] By adopting the above technical solution, the cover plate can be accurately installed on the body, covering the mounting groove and preventing dust, debris and other objects from entering the mounting groove. This protects components such as the battery board and power connector, and also helps to maintain the cleanliness and aesthetics of the fingerprint lock.
[0014] Optionally, a protective pad for covering the charging interface is rotatably connected to the inner side of the positioning hole.
[0015] By adopting the above technical solution, the protective pad can cover the charging interface. When the charging function is not in use, the protective pad can prevent dust, moisture and other substances from entering the charging interface, avoid contamination or damage to the charging interface, extend the service life of the charging interface, and improve the safety and reliability of charging.
[0016] Optionally, both sides of the cover plate are fixedly connected to insert rods, and the upper end of the body is provided with a slot for inserting the insert rods.
[0017] By adopting the above technical solution, the cover plate can be firmly fixed to the body, preventing it from loosening or falling off during use, ensuring the sealing and protection effect of the mounting groove, and also improving the overall structural stability of the fingerprint lock.
[0018] Optionally, a deadbolt is installed at the lower end of the main body near the inner handle, and the deadbolt is connected to the lower end of the lock body.
[0019] By adopting the above technical solution, users can easily lock the door indoors by turning the deadbolt knob, without the need for keys or other tools, which improves the convenience and security of the deadbolt operation and enhances the privacy and safety of people indoors.
[0020] Optionally, a digital panel connected to a circuit board is installed on the side of the body near the outer handle.
[0021] By adopting the above technical solution, the digital panel's password unlocking function can set complex passwords. Combined with fingerprint recognition, this improves the security of the fingerprint lock. Even if the fingerprint recognition malfunctions or misjudges, the user can still unlock the door with a password. At the same time, the password can also serve as a backup unlocking method to prevent situations where the door cannot be opened due to damage to the fingerprint recognition module.
[0022] In summary, this application has the following beneficial effects:
[0023] 1. This application allows users to charge the battery panel without disassembling it, simply by inserting the charger into the charging port. This provides users with a more convenient charging method, improves ease of use, and securely fixes the battery panel, making the installation and disassembly process more convenient and faster.
[0024] 2. This application uses indicator lights to visually display the battery level, allowing users to know the battery level in a timely manner and avoid the smart lock becoming unusable due to insufficient power. This allows users to charge or replace the battery in advance, ensuring the normal operation of the smart lock. Attached Figure Description
[0025] Figure 1 This is a schematic diagram of the structure of the smart fingerprint lock according to an embodiment of this application;
[0026] Figure 2 This is a schematic diagram of the structure of the body and handle according to an embodiment of this application;
[0027] Figure 3 This is a schematic diagram of the mounting groove and the battery panel in an embodiment of this application;
[0028] Figure 4 This is a schematic diagram of the mounting groove and positioning element according to an embodiment of this application;
[0029] Figure 5 This is a plan view of the body and the mounting slot according to an embodiment of this application;
[0030] Figure 6 yes Figure 5 A cross-sectional view along line AA.
[0031] Explanation of reference numerals in the attached diagram: 1. Main body; 11. Lock body; 12. Slot; 2. Outer handle; 21. Fingerprint module; 3. Inner handle; 4. Mounting slot; 41. Power connector; 42. Charging connector; 421. Charging interface; 43. Positioning slot; 5. Battery board; 6. Positioning component; 61. Slide plate; 62. Locking block; 63. Return spring; 7. Cover plate; 71. Positioning hole; 72. Protective pad; 73. Insert rod; 8. Indicator light; 9. Deadbolt knob; 10. Digital panel. Detailed Implementation
[0032] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.
[0033] This application discloses an intelligent fingerprint lock.
[0034] Reference Figure 1 The smart fingerprint lock includes a main body 1, which connects to the door panel. A lock body 11 is fixedly installed on the inner side of the main body 1, and an outer handle 2 and an inner handle 3, respectively, are rotatably connected to the lock body 11 on both sides. The lock body 11 consists of a shell, lock cylinder, bolt, connecting components, transmission mechanism, electronic components, and mounting components. The shell of the lock body 11 protects the internal mechanical components; the lock cylinder is the core component of the lock body 11, used to control the opening and closing of the lock. The bolt is the actuating component of the lock body 11, used to lock and unlock the lock. A deadbolt 9 is installed on the lower end of the main body 1 near the inner handle 3, connected to the bolt at the lower end of the lock body 11, allowing for easy deadbolt locking from the inside. The connecting components connect the lock body 11 to the outer handle 2, inner handle 3, lock cylinder, and other components, ensuring coordinated operation between the components. The transmission mechanism transmits the rotation of the outer handle 2 and inner handle 3 to the lock cylinder, thereby enabling the extension and retraction of the bolt. In smart fingerprint locks, electronic components are used to realize functions such as fingerprint recognition, password input, and power display. Mounting components are used to fix the lock body to the door, ensuring its stability and security.
[0035] Reference Figure 1 , Figure 2 and Figure 3The electronic components mainly include a circuit board, a fingerprint module 21, a digital panel 10, an indicator light 8, and a battery board 5. The circuit board is the core of the electronic components, used to control functions such as fingerprint recognition and password input. The fingerprint module 21 is fixedly installed on the inner wall of one end of the outer handle 2 to collect the user's fingerprint information. The digital panel 10 is used for password input. The indicator light 8 consists of red and green lights. When the battery board 5 has insufficient power, the red light illuminates and flashes, reminding the user to charge the battery board 5. When the battery board 5 is fully charged, the green light illuminates and turns off after the charger is unplugged, displaying the battery board 5's power level. A mounting slot 4 is provided on the upper part of the main body 1 near the inner handle 3 for installing the battery board 5. The battery board 5 provides power to the electronic components, ensuring the normal operation of the smart lock. Multiple positioning parts 6 are installed on the inner wall of the mounting slot 4 to secure the battery board 5, ensuring the stability of the connection between the battery board 5 and the inner wall of the mounting slot 4.
[0036] Reference Figure 3 , Figure 4 A power connector 41, which connects to the internal circuit board of the main body 1, is fixedly connected to the inner side of the mounting slot 4. The upper end of the power connector 41 has a socket for the lower end of the battery panel 5 to be inserted, ensuring the normal operation of the smart lock. A charging connector 42 is fixedly connected to the upper end of the mounting slot 4. The lower end of the charging connector 42 has a socket for the battery panel 5 to be inserted, ensuring the stability of charging. A charging interface 421 for the charger to be inserted is fixedly connected to the upper end of the charging connector 42 for charging the battery panel 5.
[0037] Reference Figure 3 , Figure 4 The upper end of the main body 1 is equipped with a cover plate 7 for covering the mounting groove 4. The upper end of the cover plate 7 has a positioning hole 71 for inserting the upper end of the charging connector 42. The positioning hole 71 is used to ensure the stability of the charging connector 42 and prevent misalignment. A protective pad 72 for covering the upper side of the charging connector 42 is rotatably connected to the inner side of one end of the positioning hole 71. The protective pad 72 is used to prevent dust, moisture, etc. from entering the charging interface 421, avoiding contamination or damage to the charging interface 421 and extending the service life of the charging interface 421. Two plug rods 73 are fixedly connected to the inner side of the cover plate 7, and the upper end of the main body 1 has a slot 12 for inserting the plug rods 73 to ensure the stability of the connection between the cover plate 7 and the main body 1.
[0038] Reference Figure 5 , Figure 6In this application, there are four positioning elements 6. In other embodiments, the number of positioning elements 6 may be two, six, or more. Each positioning element 6 consists of a sliding plate 61, a locking block 62, and two return springs 63. The locking block 62 is fixedly installed on one side of the sliding plate 61, and the two return springs 63 are fixedly connected to the other side of the sliding plate 61. The inner wall of the mounting groove 4 has a positioning groove 43 for sliding the sliding plate 61 and the locking block 62. The other ends of the two return springs 63 are fixedly connected to one side of the positioning groove 43. The return springs 63 are used to push the sliding plate 61 to slide along the inner wall of the positioning groove 43 until one side of the locking block 62 extends out of the positioning groove 43, thus ensuring the stability of the structure. When installing the battery panel 5, inserting it into the mounting slot 4 will push the inclined surface of the locking block 62, causing the locking block 62 to retract into the inner side of the positioning slot 43, and causing the return spring 63 to retract until the plugs on both sides of one side of the battery panel 5 are inserted into the sockets of the power connector 41 and the charging connector 42 respectively. At this time, one end of the locking block 62 is disengaged from the side wall of the battery panel 5. Then, with the help of the elastic force of the return spring 63, one side of the sliding plate 61 is pushed to fit against one side of the positioning slot 43 until one side of the locking block 62 is pressed against one side of the battery panel 5, thus completing the installation of the battery panel 5.
[0039] The implementation principle of the smart fingerprint lock in this application embodiment is as follows: First, the lock body 11 is installed inside the main body 1; then, the inner handle 3 and the outer handle 2 are respectively installed on both sides of the main body 1 and connected to the lock body 11; Second, the fingerprint module 21 is installed on the inner wall of one end of the outer handle 2, and its circuit is connected to the circuit board inside the main body 1, and then the circuit board is connected to the digital panel 10 on one side of the main body 1; Third, the cover plate 7 is pushed upward to remove it, and then the battery plate 5 is placed in the mounting slot 4. Then, the battery plate 5 is pushed until the two plugs on one side of the battery plate 5 are respectively inserted into the plugs of the power connector 41. The charging connector 42 is inserted into the socket. At this time, the return spring 63 pushes the slide plate 61 to slide on the inner wall of the positioning groove 43 until one side of the locking block 62 abuts against one side of the battery plate 5, completing the installation of the battery plate 5. The fourth step is to move the cover plate 7 to insert the two plug rods 73 into the slot 12 until the lower side of the cover plate 7 fits against the body 1 and the positioning hole 71 is locked on the outside of the charging connector 42, completing the installation of the cover plate 7. The fifth step is to install the deadbolt 9 at the lower end of the body 1 and connect it to the lock body 11, completing the assembly of the smart fingerprint lock. Finally, the smart fingerprint lock can be installed on the door panel using the installation components.
[0040] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A smart fingerprint lock, comprising a body (1), an outer handle (2) installed on one side of the body (1), an inner handle (3) installed on the other side of the body (1), and a lock body (11) installed inside the body (1), characterized in that: The two ends of the lock cylinder inside the lock body (11) are respectively connected to one end of the inner handle (3) and the outer handle (2). The outer handle (2) is equipped with a fingerprint module (21). The main body (1) is provided with a mounting groove (4) on the side near the inner handle (3). A battery board (5) is installed on the inner wall of the mounting groove (4). Multiple positioning parts (6) for fixing the battery board (5) are installed on the inner side of the mounting groove (4). A cover plate (7) for covering the mounting groove (4) is connected to one side of the main body (1). A power connector (41) connected to the internal circuit board of the main body (1) is fixedly connected to the inner wall of the mounting groove (4). One end of the power connector (41) is connected to the lower end of the battery board (5). An indicator light (8) connected to the circuit board is installed on one side of the main body (1).
2. The smart fingerprint lock according to claim 1, characterized in that: The positioning component (6) includes a sliding plate (61), a locking block (62), and a return spring (63). The inner wall of the mounting groove (4) is provided with a positioning groove (43) for the sliding plate (61) to slide. The locking block (62) is fixedly connected to one side of the sliding plate (61) and one end extends out of the positioning groove (43) to abut against one side of the battery panel (5). The return spring (63) is fixedly connected between the sliding plate (61) and the inner wall of the positioning groove (43).
3. The smart fingerprint lock according to claim 1, characterized in that: A charging connector (42) is fixedly connected to the upper side of the mounting slot (4). The lower end of the charging connector (42) is connected to the upper end of the battery plate (5). A charging interface (421) is fixedly installed on the upper end of the charging connector (42).
4. The smart fingerprint lock according to claim 3, characterized in that: The upper end of the cover plate (7) is provided with a positioning hole (71) for the upper end of the charging connector (42) to be inserted.
5. The intelligent fingerprint lock according to claim 4, characterized in that: The inner side of the positioning hole (71) is rotatably connected to a protective pad (72) for covering the charging interface (421).
6. The smart fingerprint lock according to claim 1, characterized in that: Both sides of the cover plate (7) are fixedly connected to the insert rod (73), and the upper end of the body (1) is provided with a slot (12) for inserting the insert rod (73).
7. The intelligent fingerprint lock according to claim 1, characterized in that: The main body (1) is equipped with a deadbolt (9) near the lower end of the inner handle (3), and the deadbolt (9) is connected to the lower end of the lock body (11).
8. The smart fingerprint lock according to claim 1, characterized in that: The main body (1) has a digital panel (10) connected to the circuit board installed on the side near the outer handle (2).