Intelligent lock with video recording function
By adding a second fingerprint reader and a linear motor scraper combination to the fixed handle of the smart lock, dual fingerprint recognition and automatic cleaning are achieved, solving the theft risk caused by fingerprint residue and improving the security and practicality of the smart lock.
Patent Information
- Application Number
- CN202423253832.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-25
- Publication Date
- 2026-01-09
- Estimated Expiration
- 2034-12-25
AI Technical Summary
Existing smart locks are prone to leaving fingerprint residue when unlocked with fingerprints, posing a risk of being copied and used for theft.
A second fingerprint reader is added to the fixed handle of the smart lock. A linear motor and guide rail work together with a scraper to clean the dirt. The fingerprint reader is combined with a semiconductor fingerprint sensor for dual fingerprint recognition. The second fingerprint reader is located on the back of the fixed handle and is not easily visible.
It effectively reduces the risk of fingerprint theft, improves the security of fingerprint recognition, and automatically cleans the fingerprint reader, enhancing the security and practicality of the lock.
Smart Images

Figure CN223781280U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of smart lock technology, specifically to a smart lock with video recording function. Background Technology
[0002] Smart locks are improved versions of traditional mechanical locks, offering greater intelligence and convenience in terms of user security, identification, and management. They offer a variety of unlocking methods, such as fingerprint recognition, facial recognition, digital password, remote unlocking via mobile phone, and NFC card unlocking, and their actual performance is better than that of traditional mechanical locks.
[0003] Most existing smart locks use fingerprint unlocking, but fingerprints can easily remain on the panel, leading to the possibility of fingerprints being copied and used to make fingerprint films, thus posing a risk of theft. Utility Model Content
[0004] Therefore, the purpose of this utility model is to provide a smart lock with video recording function to solve the technical problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a smart lock with video recording function, comprising a door body and an outer panel, a fixed handle fixed below the outer surface of the outer panel, a first fingerprint reader installed on the outer surface of the fixed handle, a second fingerprint reader installed on the back of the fixed handle, guide rails installed on both sides of the back of the fixed handle, and a linear motor installed inside the guide rails, with a scraper connected to the output end of the linear motor.
[0006] By adopting the above technical solution, when a user unlocks the door with their fingerprint, this solution adds a second fingerprint reader to the original first fingerprint reader. When the user opens the door, they grasp the fixed handle, their thumb contacts the first fingerprint reader, and the other fingers contact the second fingerprint reader. This dual fingerprint recognition, using semiconductor fingerprint sensors, effectively reduces the risk of thieves opening the door by fingerprint recognition. Furthermore, the second fingerprint reader is located on the back of the fixed handle, making it difficult for thieves to see directly, thus preventing them from noticing the need for fingerprint recognition on the back and further preventing entry by fingerprint recognition. Additionally, a linear motor can be activated, causing it to move back and forth along the guide rail once, which in turn moves the scraper left and right once, effectively removing dirt from the second fingerprint reader and providing a cleaning effect.
[0007] Furthermore, the length and height of the second fingerprint reader are greater than those of the first fingerprint reader.
[0008] By adopting the above technical solution, the second fingerprint identifier has a larger size, facilitating the detection of the fingerprint of the user placed on the back of the fixed handle, enabling blind operation without the user pressing their finger at a designated position, thus enhancing practicality.
[0009] Furthermore, both the first fingerprint identifier and the second fingerprint identifier are semiconductor fingerprint identification sensors.
[0010] By adopting the above technical solution, both the first fingerprint identifier and the second fingerprint identifier are semiconductor fingerprint identification sensors, effectively reducing the risk of a thief opening the door by stealing the fingerprint for fingerprint identification.
[0011] Furthermore, the cross-section of the guide rail is in a "C" shape, and the cross-section of the linear motor is in a "convex" shape.
[0012] By adopting the above technical solution, the shapes of the guide rail and the linear motor can effectively prevent the linear motor and the scraper from falling off, ensuring the stability of the structure.
[0013] Furthermore, the linear motor is slidably connected to the guide rail, and the scraper is slidably connected to the second fingerprint identifier.
[0014] By adopting the above technical solution, the linear motor can be activated to move reciprocally left and right along the guide rail once, causing the scraper to move left and right once, so as to scrape away the stains on the second fingerprint identifier, thereby facilitating a certain cleaning effect.
[0015] Furthermore, a camera, a human body sensor, a password panel, and a doorbell are respectively installed on the outer surface of the outer panel from top to bottom. A card reader is installed above the outer surface of the fixed handle, and a mechanical key cover plate is provided below the outer surface of the fixed handle.
[0016] By adopting the above technical solution, the human body sensor detects whether there is a person approaching. When a person approaches, the camera is activated to determine whether the person is an authorized user. If it is an authorized user, the door body can be opened; otherwise, if it is not an authorized user, the door body cannot be opened. The user can also input a digital password on the password panel to open the door, or place an NFC card on the surface of the card reader for information identification to open the door. If the battery of this smart lock runs out, the user can remove the mechanical key cover plate and then use the mechanical key to open the lock core, avoiding the situation where the user cannot open the door due to such drawbacks.
[0017] Furthermore, a lock core is installed inside the door body.
[0018] By adopting the above technical solution, when unlocking through the camera, password panel, card reader, first fingerprint identifier, or second fingerprint identifier, the lock core is opened to enable the door body to be opened.
[0019] Furthermore, an inner panel is installed on the back of the door, and a display screen, a switch button, a movable handle, and a mechanical lock are respectively installed on the back of the inner panel from top to bottom.
[0020] By adopting the above technical solution, users can press the switch button to turn on the display screen, take pictures through the camera and display them on the screen as a peephole, so as to make it easier to identify whether the person outside the door is an acquaintance, thus improving security. After confirming that it is an acquaintance, users can turn the movable handle to open the door. Before going to sleep at night, users can turn the mechanical lock to lock the door.
[0021] Furthermore, the camera setup includes three cameras: two wide-angle 3D face recognition cameras on either side and a monitoring camera in the middle.
[0022] By adopting the above technical solution, two wide-angle 3D face recognition cameras are used to scan both sides of the face symmetrically to construct a 3D face image, thereby determining whether the person is an authorized person. If the person is an authorized person, the door can be opened; otherwise, if the person is not an authorized person, the door cannot be opened. The monitoring camera in the middle records the video.
[0023] In summary, the present invention has the following main advantages:
[0024] 1. This utility model adds a second fingerprint reader to the original first fingerprint reader by setting up a first fingerprint reader and a second fingerprint reader. When the user opens the door, they grasp the fixed handle, with their thumb touching the first fingerprint reader and the other fingers touching the second fingerprint reader. This dual fingerprint recognition, using semiconductor fingerprint sensors, effectively reduces the risk of thieves opening the door by fingerprint recognition. Furthermore, the second fingerprint reader is located on the back of the fixed handle, making it difficult for thieves to see directly, further preventing them from noticing the need for fingerprint recognition on the back and thus avoiding entry by fingerprint recognition. This improves the security of fingerprint recognition and effectively prevents thieves from entering by fingerprint recognition.
[0025] 2. This utility model, through the arrangement of guide rail, linear motor and scraper, the linear motor moves back and forth left and right once along the guide rail after starting, so that the scraper moves left and right once, so as to scrape away the dirt on the second fingerprint reader, thus facilitating a certain cleaning effect; and facilitating automatic cleaning of the second fingerprint reader. Attached Figure Description
[0026] Figure 1 This is a schematic diagram of the structure of this utility model;
[0027] Figure 2 This is a schematic diagram of the back structure of this utility model;
[0028] Figure 3 This is a schematic diagram of the fixed handle structure of this utility model;
[0029] Figure 4 This is a side sectional view of the fixed handle structure of this utility model.
[0030] In the diagram: 1. Door body; 2. Outer panel; 3. Inner panel; 4. Lock cylinder; 5. Camera; 6. Human body sensor; 7. Password plate; 8. Doorbell; 9. Fixed handle; 10. Card reader; 11. First fingerprint reader; 12. Mechanical key cover; 13. Display screen; 14. Switch button; 15. Movable handle; 16. Mechanical lock; 17. Second fingerprint reader; 18. Guide rail; 19. Linear motor; 20. Scraper. Detailed Implementation
[0031] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.
[0032] The embodiments of this utility model will be described below based on its overall structure.
[0033] Example 1:
[0034] A smart lock with video recording function, such as Figure 1 , Figure 2 and Figure 4As shown, the device includes a door body 1 and an outer panel 2. A fixed handle 9 is fixed to the lower surface of the outer surface of the outer panel 2. A first fingerprint reader 11 is installed on the outer surface of the fixed handle 9, and a second fingerprint reader 17 is installed on the back of the fixed handle 9. Both the first fingerprint reader 11 and the second fingerprint reader 17 are semiconductor fingerprint sensors. The length and height of the second fingerprint reader 17 are greater than the length and height of the first fingerprint reader 11. Guide rails 18 are installed on both sides of the back of the fixed handle 9. The cross-section of the guide rails 18 is "C"-shaped. A linear motor 19 is installed inside the guide rails 18. The cross-section of the linear motor 19 is "convex". The linear motor 19 is slidably connected to the guide rails 18. A scraper 20 is connected to the output end of the linear motor 19. The scraper 20 is slidably connected to the second fingerprint reader 17. When the user unlocks the door with their fingerprint, this technical solution replaces the original first fingerprint reader. Based on the first fingerprint reader 11, a second fingerprint reader 17 is added. When the user opens the door, they grasp the fixed handle 9, with their thumb touching the first fingerprint reader 11 and the other fingers touching the second fingerprint reader 17. This dual fingerprint recognition, using semiconductor fingerprint sensors, effectively reduces the risk of thieves opening the door by fingerprint recognition. Furthermore, the second fingerprint reader 17 is located on the back of the fixed handle 9, making it difficult for thieves to see directly and thus less likely to notice that fingerprint recognition is required from the back. This further prevents thieves from entering by fingerprint recognition. The linear motor 19 can be activated, causing it to move back and forth along the guide rail 18 once, which in turn causes the scraper 20 to move left and right once, thus scraping away dirt from the second fingerprint reader 17 and providing a cleaning effect.
[0035] See Figures 1-4In the above embodiment, a camera 5, a human body sensor 6, a keypad 7, and a doorbell 8 are respectively installed on the outer surface of the outer panel 2 from top to bottom. A card reader 10 is installed above the outer surface of the fixed handle 9, and a mechanical key cover 12 is provided below the outer surface of the fixed handle 9. A lock cylinder 4 is installed inside the door body 1, and an inner panel 3 is installed on the back of the door body 1. A display screen 13, a switch button 14, a movable handle 15, and a mechanical lock 16 are respectively installed on the back of the inner panel 3 from top to bottom. The human body sensor 6 detects whether a person is approaching. When a person approaches, the camera 5 will activate to determine whether the person is authorized. If the person is authorized, the door body 1 can be opened; otherwise, if the person is not authorized, the door body 1 cannot be opened. Users can also enter a numerical keypad 7. The door can be opened by scanning a code or by placing an NFC card on the surface of the card reader 10 for information recognition. If the smart lock runs out of power, the user can remove the mechanical key cover 12 and then open the lock cylinder 4 with the mechanical key to avoid the user being unable to open the door due to the disadvantage. When the user is indoors, visitors outside can press the doorbell 8 to remind the user inside. The user can press the switch button 14 to turn on the display screen 13, and the camera 5 takes a picture and displays it on the display screen 13 as a peephole, so as to make it easier to identify whether the person outside the door is familiar, thus improving security. After confirming that it is a familiar person, the user can turn the movable handle 15 to open the door. Before going to sleep at night, the user can turn the mechanical lock 16 to lock the door 1.
[0036] Example 2:
[0037] Based on the above embodiment one, in order to increase the security of face recognition, the following settings are now implemented.
[0038] See Figure 1 In the above embodiment, three cameras 5 are provided. The three cameras 5 include two wide-angle 3D face recognition cameras on both sides and a monitoring camera in the middle. The two wide-angle 3D face recognition cameras 5 scan the two sides of the face symmetrically to construct a 3D face image, thereby determining whether the person is an authorized person. If the person is an authorized person, the door 1 can be opened; otherwise, if the person is not an authorized person, the door 1 cannot be opened. The monitoring camera in the middle records the video.
[0039] The implementation principle of this utility model is as follows: First, this smart lock has a high degree of integration. It detects whether a person is approaching through the human body sensor 6. When a person approaches, three cameras 5 will be turned on simultaneously. Two wide-angle 3D face recognition cameras will scan the two sides of the face symmetrically to construct a 3D face image, thereby determining whether the person is an authorized person. If the person is an authorized person, the door 1 can be opened; otherwise, if the person is not an authorized person, the door 1 cannot be opened. The monitoring camera in the middle will record the video. Users can also open the door by entering a digital password through the password plate 7 or by placing an NFC card on the surface of the card reader 10 for information recognition.
[0040] When a user unlocks the door with their fingerprint, this technical solution adds a second fingerprint reader 17 to the original first fingerprint reader 11. When the user opens the door, they grasp the fixed handle 9, with their thumb touching the first fingerprint reader 11 and the other fingers touching the second fingerprint reader 17. This dual fingerprint recognition, using semiconductor fingerprint sensors, effectively reduces the risk of thieves opening the door by fingerprint recognition. Furthermore, the second fingerprint reader 17 is located on the back of the fixed handle 9, making it difficult for thieves to see directly and thus less likely to notice that fingerprint recognition is required from the back. This further prevents thieves from entering by fingerprint recognition. Additionally, the linear motor 19 can be activated, causing it to move back and forth along the guide rail 18 once, which in turn causes the scraper 20 to move left and right once, thus scraping away dirt from the second fingerprint reader 17 and providing a cleaning effect.
[0041] If the smart lock runs out of power, the user can remove the mechanical key cover 12 and then open the lock cylinder 4 with the mechanical key to avoid the user being unable to open the door due to the defect.
[0042] When the user is indoors, visitors outside can press the doorbell 8 to remind the user inside. The user can press the switch button 14 to turn on the display screen 13, and the camera 5 will take a picture and display it on the display screen 13 as a peephole, so as to make it easier to identify whether the person outside the door is an acquaintance, thus improving security. After confirming that it is an acquaintance, the user can turn the movable handle 15 to open the door. Before going to sleep at night, the user can turn the mechanical lock 16 to lock the door 1 from the inside.
[0043] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.
Claims
1. A smart lock with video recording function, comprising a door body (1) and an outer panel (2), characterized in that: A fixed handle (9) is fixed below the outer surface of the outer panel (2), and a first fingerprint recognition device (11) is installed on the outer surface of the fixed handle (9). A second fingerprint recognition device (17) is installed on the back of the fixed handle (9). Guide rails (18) are installed on both sides of the back of the fixed handle (9), and a linear motor (19) is installed inside the guide rails (18). The output end of the linear motor (19) is connected to a scraper (20).
2. The smart lock with video recording function according to claim 1, characterized in that: The length and height of the second fingerprint recognition device (17) are greater than the length and height of the first fingerprint recognition device (11).
3. The smart lock with video recording function according to claim 2, characterized in that: Both the first fingerprint recognition device (11) and the second fingerprint recognition device (17) are semiconductor fingerprint recognition sensors.
4. The smart lock with video recording function according to claim 1, characterized in that: The cross-section of the guide rail (18) is "C"-shaped, and the cross-section of the linear motor (19) is "convex"-shaped.
5. The smart lock with video recording function according to claim 4, characterized in that: The linear motor (19) is slidably connected to the guide rail (18), and the scraper (20) is slidably connected to the second fingerprint recognition device (17).
6. The smart lock with video recording function according to claim 1, characterized in that: A camera (5), a human body sensor (6), a password panel (7) and a doorbell (8) are respectively installed on the outer surface of the outer panel (2) from top to bottom. A card reader (10) is installed above the outer surface of the fixed handle (9), and a mechanical key cover plate (12) is arranged below the outer surface of the fixed handle (9).
7. The smart lock with video recording function according to claim 6, characterized in that: A lock core (4) is installed inside the door body (1).
8. The smart lock with video recording function according to claim 7, characterized in that: An inner panel (3) is installed on the back of the door body (1), and a display screen (13), a switch button (14), a movable handle (15) and a mechanical lock (16) are respectively installed on the back of the inner panel (3) from top to bottom.
9. The smart lock with video recording function according to claim 6, characterized in that: There are three cameras (5), and the three cameras (5) include two long wide-angle 3D face recognition cameras on both sides and a monitoring camera in the middle.