Intelligent door lock with child lock function

Abstract

The utility model provides a kind of intelligent door lock with child lock function belongs to intelligent door lock technical field, including front lock and rear lock and square tongue, front lock includes front shell, and front shell side is equipped with front cover, and is equipped with touch mouth and lock core groove and display screen groove on front shell, is equipped with vane lock core on front shell, and is equipped with touch plate mainboard on front shell, and front shell side is equipped with fingerprint module, and the other side is equipped with USB charging seat, and is equipped with OLED display screen in front shell;Rear lock includes rear shell, and rear shell side is equipped with rear cover, and is equipped with first motor in rear shell, and clutch assembly is equipped in rear shell, clutch assembly includes second motor and lock tongue, and second motor is fixed on rear shell by bolt, and lock tongue is connected with second motor, and knob is equipped in rear shell, and battery is equipped in rear shell, and magnet box is equipped on rear shell;Vane rod is equipped on vane lock core;Square tongue is connected with vane rod, and front lock is connected with rear lock by vane rod. By making clutch assembly catch knob, indoor cannot twist knob to open lock.

Description

Technical Field

[0001] This utility model belongs to the field of smart door lock technology, and more specifically, it relates to a smart door lock with a child lock function. Background Technology

[0002] In home security, commercial offices, and residential settings, door locks are frequently used for access control. In both daily use and special scenarios, door locks need to offer multiple unlocking methods and user-friendly features to balance security and convenience. However, traditional devices often lack multiple unlocking modes and child safety features. This leads to issues like forgetting or losing keys, as users rely solely on them. In households with children, the lack of dedicated safety mechanisms makes it easy for children to accidentally open doors, posing a safety risk. This not only affects user convenience and reduces access efficiency but also increases management complexity due to the limited functionality, hindering the integration and upgrading of home security systems. Utility Model Content

[0003] To address the aforementioned technical problems, this utility model provides an intelligent door lock with a child lock function, thereby solving the technical problem that traditional devices in the prior art do not have multiple unlocking modes and child safety protection functions.

[0004] The purpose and function of this utility model of a smart door lock with a child lock function are achieved by the following specific technical means:

[0005] A smart door lock with child lock function includes a front lock, a rear lock, and a square latch. The front lock includes a front shell with a front cover plate on one side, a touch port, a lock cylinder slot, and a display screen slot on the front shell, a blade lock cylinder on the front shell, a touch panel mainboard on the front shell, a fingerprint module on one side of the front shell, a USB charging dock on the other side, and an OLED display screen inside the front shell. The rear lock includes a rear shell with a rear cover plate on one side, a first motor inside the rear shell, a clutch assembly inside the rear shell, the clutch assembly including a second motor and a latch, the second motor being fixed to the rear shell by bolts, the latch being connected to the second motor, a knob inside the rear shell, a battery inside the rear shell, and a magnet box on the rear shell. The blade lock cylinder has a blade rod; the square latch is connected to the blade rod, and the front lock and the rear lock are connected through the blade rod.

[0006] According to a preferred embodiment, a lens is provided on one side of the front shell via adhesive, a screen support is provided inside the front shell, the OLED display screen is connected to the display screen slot via the screen support, a support is provided on one side of the touchpad motherboard, and the touchpad motherboard is connected to the front shell via the support.

[0007] According to a preferred embodiment, the front cover is provided with a first cable outlet groove, a limiting bracket is provided on one side of the front cover, the front cover is connected to the front shell through the limiting bracket, the fingerprint module is connected to the touch port through the adhesive backing and the screen bracket, and the blade lock core is fixed to the front shell through the adhesive backing.

[0008] According to a preferred embodiment, the rear housing is provided with a knob hole, the knob is fixed in the knob hole by a retaining spring, the rear lock is connected to the blade rod through the knob, the first motor and the knob are both provided with square rod grooves, the knob is provided with a blade rod groove and a retaining groove, one end of the blade rod passes through the blade rod groove, and the clutch assembly is connected to the retaining groove.

[0009] According to a preferred embodiment, the rear housing is provided with a battery slot, the battery is secured in the battery slot, and a Hall sensor for detecting the door opening / closing status and a power board are provided inside the rear housing. The Hall sensor is electrically connected to the power board, and a child mode button is provided on the rear housing. When the child mode is turned on, the second motor drives the latch to move and engage in the slot. When the child mode is turned off, the second motor drives the latch to move and disengage from the slot.

[0010] According to a preferred embodiment, the knob is provided with a square rod, the square rod is connected to the square rod groove, the rear shell is provided with a normally open button, the rear cover is provided with a second cable outlet groove, and the rear cover is connected to the rear shell by connecting bolts.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. This utility model, through the inclusion of a fingerprint module, a blade lock cylinder, and a Bluetooth APP unlocking function, enables users to unlock the door lock in multiple ways, enhancing the device's ease of use. In daily use, users can choose fingerprint unlocking, key unlocking, or Bluetooth APP unlocking according to their needs. After successful fingerprint verification, key turning, or mobile APP verification, the door lock can quickly respond and unlock, allowing users to conveniently enter and exit without carrying a key, thus improving the device's versatility in unlocking methods.

[0013] 2. When using this device, the user can activate the child mode via the child mode button, which locks the knob using the small motor clutch assembly, preventing the knob from being turned to unlock from inside the device, thus enhancing its safety. Then, through the cooperation of the Hall sensor and the magnetic box, the door automatically locks when closed. The normally open mode can be activated via the normally open button for convenient frequent entry and exit, providing a more user-friendly experience and improving the device's intelligence and user-friendliness. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the assembled structure of this utility model;

[0015] Figure 2 This is an internal structural view of the assembled version of this utility model;

[0016] Figure 3 This is a schematic diagram of the internal structure of the left side of this utility model;

[0017] Figure 4 This is a schematic diagram of the internal parts of the rear lock of this utility model;

[0018] Figure 5 This is a schematic diagram of the clutch assembly of this utility model.

[0019] In the diagram, the correspondence between component names and drawing numbers is as follows:

[0020] 1. Front lock; 2. Rear lock; 3. Square bolt; 4. Leaf lock cylinder; 5. Touchpad motherboard; 6. OLED display; 8. Lens; 9. Front shell; 10. Fingerprint module; 12. Front cover plate; 13. Bracket; 14. Limiting bracket; 15. USB charging dock; 16. Leaf rod; 17. Leaf rod slot; 18. First cable outlet slot; 19. Rear shell; 20. Rear cover plate; 21. First motor; 22. Clutch assembly; 23. Magnet box; 24. Knob; 25. Battery; 26. Child mode button; 27. Snap ring; 28. Square rod slot; 29. ​​Power board; 30. Hall sensor; 31. Normally open button; 32. Second cable outlet slot; 33. Second motor; 34. Lock bolt; 35. Slot. Detailed Implementation

[0021] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate the technical solution of this utility model, but should not be used to limit the scope of protection of this utility model.

[0022] Example:

[0023] like Figures 1 to 2As shown, this utility model provides a smart door lock with child lock function, including a front lock 1, a rear lock 2, and a square latch 3. The front lock 1 includes a front shell 9, with a front cover plate 12 on one side. The front shell 9 has a touch port, a lock cylinder slot, and a display screen slot. The front shell 9 has a blade lock cylinder 4 and a touch panel mainboard 5. A fingerprint module 10 is located on one side of the front shell 9, and a USB charging dock 15 is located on the other side. An OLED display screen 6 is located inside the front shell 9. The rear lock 2 includes a rear shell 19. A rear cover plate 20 is provided on one side, a first motor 21 is provided inside the rear shell 19, a clutch assembly 22 is provided inside the rear shell 19, the clutch assembly 22 includes a second motor 33 and a locking tongue 34, the second motor 33 is fixed to the rear shell 19 by bolts, the locking tongue 34 is connected to the second motor 33, a knob 24 is provided inside the rear shell 19, a battery 25 is provided inside the rear shell 19, and a magnet box 23 is provided on the rear shell 19; a blade rod 16 is provided on the blade lock core 4; the square tongue 3 is connected to the blade rod 16, and the front lock 1 and the rear lock 2 are connected through the blade rod 16.

[0024] Specifically, the front lock 1 and the rear lock 2 are located on the inner and outer sides of the door, respectively, and are mechanically connected by the blade rod 16 to ensure that the operation on both sides can synchronously control the extension and retraction of the bolt 3, thereby opening and closing the door lock; the blade lock cylinder 4, as a traditional mechanical lock cylinder, can be operated by the key to drive the bolt 3 to move, serving as a backup method for unlocking and improving security; the touchpad motherboard 5, the fingerprint module 10, and the OLED display screen 6 together constitute the unlocking system, allowing users to unlock the door via touch operation and fingerprint recognition. The OLED display screen 6 can display information such as the door lock status and operation prompts; the USB charging dock 15 can be used when the battery 25 is low on power. The door lock is powered in an emergency to prevent it from being locked due to power failure. The first motor 21 in the rear housing 19 and the second motor 33 in the clutch assembly 22 provide power for the extension and retraction of the bolt 34, enabling controlled locking and unlocking. The connection between the second motor 33 and the bolt 34 controls the movement of the bolt 34. When used with the child lock function, it can restrict the unlocking operation of the bolt 34 to prevent children from accidentally opening it. The knob 24 can directly control the bolt 34 mechanically from inside the room, facilitating quick unlocking in emergencies. The battery 25 provides power to the electronic components of the entire door lock. The magnet box 23 can assist in the positioning and installation of the front lock 1 and the rear lock 2, improving assembly accuracy.

[0025] A lens 8 is attached to one side of the front shell 9 via adhesive backing. A screen bracket is installed inside the front shell 9. The OLED display 6 is connected to the display slot via the screen bracket. A bracket 13 is installed on one side of the touchpad motherboard 5. The touchpad motherboard 5 is connected to the front shell 9 via the bracket 13.

[0026] Specifically, the lens 8 on the front shell 9 is fixed with adhesive, which can protect the touch port and fingerprint module 10 area and improve the aesthetics of the door lock; the screen bracket provides support for the OLED display 6, allowing it to be installed in the display slot, preventing the display from falling off due to vibration or impact, and ensuring the flatness of the displayed image; the touchpad motherboard 5 is connected to the front shell 9 through the bracket 13, which can improve the installation stability of the touchpad motherboard 5, prevent it from shifting due to touch operation during use, and ensure the sensitivity of touch sensing.

[0027] The front cover plate 12 is provided with a first cable outlet groove 18, and a limiting bracket 14 is provided on one side of the front cover plate 12. The front cover plate 12 is connected to the front shell 9 through the limiting bracket 14. The fingerprint module 10 is connected to the touch port through the back adhesive and the screen bracket. The blade lock core 4 is fixed to the front shell 9 through the back adhesive.

[0028] Specifically, the first wiring groove 18 of the front cover plate 12 provides a passage for the wiring inside the door lock, preventing damage to the wiring due to pressure and ensuring the stability of the circuit connection; the limiting bracket 14 makes the connection between the front cover plate 12 and the front shell 9 more convenient, preventing the front cover plate 12 from loosening or shifting, while also providing shielding protection for the internal components; the fingerprint module 10 is fixed to the touch port with the screen bracket by adhesive, which can ensure the flat fit of the fingerprint recognition area and improve its installation stability, ensuring accurate fingerprint collection; the blade lock cylinder 4 is fixed to the front shell 9 by adhesive, which simplifies the installation process and avoids gaps between the lock cylinder and the front shell 9, reducing dust and moisture intrusion and extending the service life of the lock cylinder.

[0029] like Figures 2 to 5 As shown, in use, the rear lock 2 includes a rear housing 19, a rear cover plate 20 on one side of the rear housing 19, a first motor 21 inside the rear housing 19, a clutch assembly 22 inside the rear housing 19, the clutch assembly 22 includes a second motor 33 and a locking tongue 34, the second motor 33 is fixed to the rear housing 19 by bolts, the locking tongue 34 is connected to the second motor 33, a knob 24 is inside the rear housing 19, a battery 25 is inside the rear housing 19, and a magnet box 23 is on the rear housing 19; a blade rod 16 is provided on the blade lock cylinder 4; a square tongue 3 is connected to the blade rod 16, and the front lock 1 and the rear lock 2 are connected through the blade rod 16. The rear housing 19 is provided with a knob hole, and the knob 24 is fixed in the knob hole by a retaining spring 27. The rear lock 2 is connected to the blade rod 16 through the knob 24. The first motor 21 and the knob 24 are both provided with square rod grooves 28. The knob 24 is provided with a blade rod groove 17 and a retaining groove 35. One end of the blade rod 16 passes through the blade rod groove 17, and the clutch assembly 22 is connected to the retaining groove 35.

[0030] Specifically, the knob hole in the rear housing 19 provides a mounting position for the knob 24, and the retaining spring 27 fixes the knob 24 to prevent it from falling off, ensuring that the knob 24 rotates stably; the knob 24 is connected to the blade rod 16 through the blade rod groove 17, realizing the power transmission from the operation of the rear lock 2 to the blade rod 16, thereby controlling the action of the square tongue 3; the first motor 21 cooperates with the square rod groove 28 of the knob 24, and can drive the knob 24 to rotate through the motor to realize intelligent unlocking; the locking tongue 34 of the clutch assembly 22 is connected to the knob 24 retaining groove 35, which can lock the knob 24 when the child lock function is activated, restricting its rotation and preventing children from accidentally unlocking; the blade rod 16 connects the front lock 1 and the rear lock 2, ensuring the synchronization of the operation on both sides and ensuring that the action of the square tongue 3 is consistent.

[0031] The rear cover 19 has a battery slot, and the battery 25 is clipped into the battery slot. The rear cover 19 has a Hall sensor 30 for detecting the door opening and closing status and a power board 29. The Hall sensor 30 and the power board 29 are electrically connected. The rear cover 19 has a child mode button 26. When the child mode is turned on, the second motor 33 drives the bolt 34 to move and engage with the slot 35. When the child mode is turned off, the second motor 33 drives the bolt 34 to move and disengage from the slot 35.

[0032] Specifically, the battery slot provides installation space for the battery 25, and the snap-fit ​​design facilitates battery replacement; the Hall sensor 30 can detect the door's open / closed status and transmit the signal to the control system via the power board 29 to ensure door lock status feedback; the child mode button 26 is used to trigger the child lock function. When open, the second motor 33 drives the bolt 34 to engage with the slot 35, locking the knob 24 so that it cannot be turned, thus achieving the child lock effect and preventing children from accidentally opening the door from the inside; when closed, the bolt 34 disengages from the slot 35, and the knob 24 resumes its rotation function, balancing safety and normal use needs.

[0033] The knob 24 has a square rod, which is connected to the square rod groove 28. The rear cover 19 has a normally open button 31, and the rear cover 20 has a second cable outlet groove 32. The rear cover 20 is connected to the rear cover 19 by connecting bolts.

[0034] Specifically, the square rod of the knob 24 cooperates with the square rod slot 28 to enhance the stability of the connection between the knob 24 and the first motor 21, ensuring reliable power transmission when the motor is driven; the normally open button 31 can keep the door lock in the normally open state, facilitating entry and exit in specific scenarios; the second wiring slot 32 of the rear cover plate 20 provides a storage channel for the internal wiring, preventing the wiring from being damaged by pressure; the connecting bolts fix the rear cover plate 20 and the rear shell 19 to ensure the sealing of the internal components of the rear lock 2, preventing dust and moisture from entering, and facilitating later maintenance.

[0035] The specific usage and function of this embodiment are as follows:

[0036] In use, the front lock 1 and the rear lock 2 are first connected via the blade rod 16. One end of the blade rod 16 passes through the blade rod groove 17 of the knob 24 of the rear lock 2, and the other end is connected to the square latch 3, ensuring that the front and rear lock operations can synchronously control the extension and retraction of the square latch 3. The magnet box 23 of the rear cover 19 assists in aligning the front and rear locks on both sides of the door. The battery 25 is inserted into the battery slot of the rear cover 19 to power the door lock. The lens 8 of the front cover 9 is fixed with adhesive to protect the touch port and fingerprint module 10. The rear cover 20 is connected to the rear cover 19 with connecting bolts to form a closed space.

[0037] Next, during routine unlocking operations, external users can verify their fingerprints via the fingerprint module 10 on the front housing 9 or enter a password via the touch port on the touchpad motherboard 5. After successful verification, the first motor 21 inside the rear housing 19 drives the knob 24 to rotate, causing the blade lever 16 to retract the latch 3 and complete the unlocking. The OLED display 6 shows the operation status. If the smart function malfunctions, a key can be inserted into the blade lock cylinder 4 to rotate the blade lever 16 for mechanical unlocking. Indoor users can directly rotate the knob 24 on the rear housing 19 to control the latch 3, and pressing the normally open button 31 will keep the door lock in the normally open state.

[0038] When the child lock function needs to be activated, press the child mode button 26 on the rear cover 19. The second motor 33 drives the latch 34 to engage with the slot 35 of the knob 24, locking the knob 24 to prevent children from accidentally opening the door. To release, press the button again, and the latch 34 will disengage from the slot 35, restoring the knob 24 to its original function. During use, the Hall sensor 30 inside the rear cover 19 detects the door's open / closed status and transmits this information to the system via the power board 29, where it is displayed on the OLED screen 6. The first wiring channel 18 of the front cover 12 and the second wiring channel 32 of the rear cover 20 store the wiring to prevent damage. The front cover 12 is connected to the front cover 9 via a limiting bracket 14, allowing for disassembly and inspection of internal components.

[0039] Its main functions are as follows: the blade rod 16 and the knob 24 work together to synchronize the front and rear lock operations, ensuring that the square bolt 3 moves in a consistent manner; the fingerprint module 10, the touchpad motherboard 5 and the OLED display screen 6 constitute an intelligent unlocking system, improving ease of use; the blade lock cylinder 4 serves as a backup to ensure unlocking reliability; the child lock function, through the linkage of the second motor 33 and the bolt 34, prevents children from accidentally opening the door, balancing safety and practicality; the Hall sensor 30 and the display screen provide feedback on the door lock status, making it easy for users to keep track of the situation; the wiring channel protects the circuit, and the cover plate connection structure ensures both sealing and easy maintenance, thus improving the overall safety, convenience and durability of the door lock.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments.

Claims

1. A smart door lock with child lock function, comprising a front lock (1), a rear lock (2), and a latch (3), characterized in that: The front lock (1) includes a front shell (9), a front cover plate (12) is provided on one side of the front shell (9), a touch port, a lock cylinder slot and a display screen slot are provided on the front shell (9), a blade lock cylinder (4) is provided on the front shell (9), a touch panel main board (5) is provided on the front shell (9), a fingerprint module (10) is provided on one side of the front shell (9), a USB charging dock (15) is provided on the other side, and an OLED display screen (6) is provided inside the front shell (9). The rear lock (2) includes a rear shell (19), a rear cover plate (20) is provided on one side of the rear shell (19), a first motor (21) is provided inside the rear shell (19), a clutch assembly (22) is provided inside the rear shell (19), the clutch assembly (22) includes a second motor (33) and a locking tongue (34), the second motor (33) is fixed to the rear shell (19) by bolts, the locking tongue (34) is connected to the second motor (33), a knob (24) is provided inside the rear shell (19), a battery (25) is provided inside the rear shell (19), and a magnet box (23) is provided on the rear shell (19). The blade lock core (4) is provided with a blade rod (16). The square tongue (3) is connected to the blade rod (16), and the front lock (1) and the rear lock (2) are connected through the blade rod (16).

2. The smart door lock with child lock function according to claim 1, characterized in that: A lens (8) is provided on one side of the front shell (9) with adhesive backing. A screen support is provided inside the front shell (9). The OLED display screen (6) is connected to the display screen slot through the screen support. A bracket (13) is provided on one side of the touchpad motherboard (5). The touchpad motherboard (5) is connected to the front shell (9) through the bracket (13).

3. A smart door lock with child lock function according to claim 2, characterized in that: The front cover plate (12) is provided with a first cable outlet groove (18), and a limiting bracket (14) is provided on one side of the front cover plate (12). The front cover plate (12) is connected to the front shell (9) through the limiting bracket (14). The fingerprint module (10) is connected to the touch port through the back adhesive and the screen bracket. The blade lock core (4) is fixed to the front shell (9) through the back adhesive.

4. A smart door lock with child lock function according to claim 1, characterized in that: The rear shell (19) is provided with a knob hole, and the knob (24) is fixed in the knob hole by a snap ring (27). The rear lock (2) is connected to the blade rod (16) through the knob (24). The first motor (21) and the knob (24) are both provided with square rod grooves (28). The knob (24) is provided with a blade rod groove (17) and a slot (35). One end of the blade rod (16) passes through the blade rod groove (17). The clutch assembly (22) is connected to the slot (35).

5. A smart door lock with child lock function according to claim 4, characterized in that: The rear shell (19) is provided with a battery slot, and the battery (25) is installed in the battery slot. The rear shell (19) is provided with a Hall sensor (30) for detecting the opening and closing status of the door and a power board (29). The Hall sensor (30) is electrically connected to the power board (29). The rear shell (19) is provided with a child mode button (26). When the child mode is activated, the second motor (33) drives the locking tongue (34) to move and engage with the slot (35). When the child mode is turned off, the second motor (33) drives the locking tongue (34) to move out of the slot (35).

6. A smart door lock with child lock function according to claim 5, characterized in that: The knob (24) is provided with a square rod, which is connected to the square rod groove (28). The rear shell (19) is provided with a normally open button (31). The rear cover plate (20) is provided with a second cable outlet groove (32). The rear cover plate (20) is connected to the rear shell (19) by connecting bolts.

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