Intelligent door lock

Abstract

The utility model discloses an intelligent door lock which comprises a door lock front cover and a door lock rear cover. The door lock comprises a door lock front cover and a door lock rear cover, the door lock rear cover is arranged on the side deviating from the door lock front cover, a lock body is installed between the door lock front cover and the door lock rear cover, and a lock cylinder and a transmission square shaft are installed in the middle of the lock body. After unlocking is completed, the straight opening handle is loosened, the elastic part enables the rectangular rod to be separated from the transmission square shaft, unlocking cannot be achieved by rotating the straight opening handle at the moment, and children are effectively prevented from opening the door lock through misoperation; a lock block matched with the lock hole is arranged between the battery cover and the battery box, the end part of the lock block is provided with a chamfer structure, and the lock block is reset through a metal rod and a spring; when the battery cover is disassembled, the locking block needs to be pressed and then slides upwards, the battery cover slides downwards after the battery is replaced, the locking block is retracted by utilizing the chamfered inclined surface, and the locking block is clamped in the locking hole by the spring, so that children are prevented from opening the battery cover by misoperation.

Description

Technical Field

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

[0002] Fully automatic smart door locks are door locks that employ advanced electronic technology, intelligent control systems, and multiple security mechanisms, featuring automation, remote control, and convenience. Compared to traditional mechanical door locks, smart door locks not only provide basic anti-theft functions but also offer greater convenience and security.

[0003] Fully automatic smart door locks have an indoor direct-open handle (or inner handle) which enhances the ease of use and emergency operation. However, existing direct-open handles do not have an anti-accidental-touch function. When children are playing indoors, they may accidentally trigger the direct-open handle, which may cause the door to open and potentially lead to accidents, such as when children go out alone, especially when there is no one else at home, which poses a certain safety hazard. Utility Model Content

[0004] The purpose of this invention is to provide an intelligent door lock to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an intelligent door lock, comprising:

[0006] Door lock front cover;

[0007] A door lock rear cover is located on the side opposite to the door lock front cover. A lock body is installed between the door lock front cover and the door lock rear cover. A lock cylinder and a transmission square shaft are installed in the middle of the lock body. A clutch that is connected to the lock cylinder is installed inside the door lock rear cover.

[0008] An interior door opening assembly includes a fixed housing movably installed inside the door lock back cover, a square tube rotatably connected to the middle of the fixed housing, a straight-opening handle slidably connected to the outside of the square tube, and a rectangular rod for driving the rotation of a transmission square shaft installed inside the square tube.

[0009] The elastic part is located inside the square tube. The elastic part includes a spring for driving the rectangular rod to separate from the transmission square shaft. When opening the door, the straight handle needs to be pushed inward and rotated by hand to open the door lock, thereby preventing children from opening the lock.

[0010] Preferably, a battery box is provided above the back cover of the door lock, a battery cover is slidably connected to the outside of the battery box, a lock block is installed inside the battery box, and the battery cover has a lock hole that cooperates with the lock block.

[0011] Preferably, a reset drive plate is fixedly connected to the outer side of the square tube, and a torsion spring is sleeved on the outer side of the square tube between the reset drive plate and the fixed housing. One end of the torsion spring is fixedly connected to the fixed housing, and the other end of the torsion spring is fixedly connected to the reset drive plate.

[0012] Preferably, one end of the rectangular rod is fixedly connected to a limiting square shaft, the limiting square shaft is slidably connected to the square tube, and a pin is fixedly connected to the end of the limiting square shaft away from the rectangular rod, with one end of the pin inserted into the straight-open handle.

[0013] Preferably, one end of the square tube is fixedly connected to a limiting plate, and the spring is sleeved on the outside of the rectangular rod and located between the limiting square axis and the limiting plate.

[0014] Preferably, one end of the transmission square shaft has a rectangular hole that mates with the rectangular rod.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: For indoor door opening, the door lock can only be opened by pushing and rotating the straight handle inwards. After unlocking, releasing the straight handle causes the elastic part to separate the rectangular rod from the transmission shaft. At this point, rotating the straight handle will not unlock the door, effectively preventing children from accidentally opening the lock. A lock block is provided between the battery cover and the battery box to engage with the lock hole. The end of the lock block has a chamfered structure and is reset by a metal rod and spring. When removing the battery cover, the lock block must be pressed and then slid upwards. After replacing the battery, the battery cover is slid down, and the chamfered bevel causes the lock block to retract. The spring locks the lock block in the lock hole, preventing children from accidentally opening the battery cover. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the door lock back cover of this utility model;

[0018] Figure 3 This is a schematic diagram of the lock body of this utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the lock block of this utility model;

[0020] Figure 5 This is a schematic diagram of the structure of the limiting square shaft of this utility model;

[0021] Figure 6 This is a schematic diagram of the rectangular hole structure of this utility model;

[0022] Figure 7 This is a schematic diagram of the position and structure of the torsion spring of this utility model.

[0023] In the diagram: 1. Front cover of the door lock; 2. Lock body; 3. Rear cover of the door lock; 4. Battery cover; 5. Lock block; 6. Straight-open handle; 7. Clutch; 8. Lock cylinder; 9. Lock hole; 10. Transmission square shaft; 11. Reset drive plate; 12. Torsion spring; 13. Fixed housing; 14. Square tube; 15. Ejector pin; 16. Limiting square shaft; 17. Spring; 18. Limiting plate; 19. Rectangular hole; 20. Rectangular rod. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1 , 2 As shown in Figures 3, 4, 5, 6, and 7, this utility model provides a technical solution: an intelligent door lock, comprising: a front cover 1, with a fingerprint recognition area and a numeric keypad area on the outer side of the front cover 1 for unlocking the door lock in conjunction with a fingerprint sensor and a password input; a rear cover 3, which houses a battery and a main control chip, and is located on the side opposite to the front cover 1; a lock body 2 is installed between the front cover 1 and the rear cover 3; a lock cylinder 8 and a transmission square shaft 10 are installed in the middle of the lock body 2; and a transmission square shaft 10 is installed inside the rear cover 3. The clutch 7 is dynamically connected; the interior door opening assembly includes a fixed housing 13 movably installed inside the door lock back cover 3, a square tube 14 is rotatably connected to the middle of the fixed housing 13, a straight opening handle 6 is slidably connected to the outer side of the square tube 14, and a rectangular rod 20 that drives the transmission square shaft 10 to rotate is installed inside the square tube 14; the elastic part is placed inside the square tube 14, and the elastic part includes a spring 17 for driving the rectangular rod 20 to separate from the transmission square shaft 10. When opening the door, the straight opening handle 6 needs to be pushed inward and rotated by hand to open the door lock, thereby preventing children from opening the lock.

[0026] It should be noted that in this embodiment, the corresponding fingerprint or password is input from the outside of the door lock front cover 1. The main control chip controls the clutch 7 to work. The clutch 7 drives the lock body 2 through the lock cylinder 8, thereby switching the lock body 2 between locking and unlocking states. When unlocking from the inside, the hand holds the straight handle 6 and pushes it into the door lock rear cover 3 and rotates it, so that the rectangular rod 20 is connected to the transmission square shaft 10. The straight handle 6 and the square tube 14 drive the rectangular rod 20 to rotate, thereby driving the transmission square shaft 10 to work. The transmission square shaft 10 drives the lock body 2 to work, and the lock body 2 retracts the corresponding lock tongue. After unlocking, the straight handle 6 is rotated back to its original position and released. The spring part pushes the straight handle 6 towards one end of the square tube 14, thereby separating the rectangular rod 20 from the transmission square shaft 10. At this time, when the straight handle 6 is rotated, it cannot be unlocked, preventing children from opening the lock.

[0027] In one embodiment, a battery box is provided above the door lock back cover 3, a battery cover 4 is slidably connected to the outside of the battery box, a lock block 5 is installed inside the battery box, and a lock hole 9 is provided on the battery cover 4 to cooperate with the lock block 5.

[0028] It should be noted that in this embodiment, the end of the locking block 5 is provided with a chamfered structure. Two metal rods that slide with the locking block 5 are fixed inside the battery cover 4. A spring that drives the locking block 5 to reset is sleeved on the outside of the metal rods. When disassembling the battery cover 4, press the locking block 5 with your finger and slide the battery cover 4 upward to remove the locking block 5. After the battery is replaced, slide the battery cover 4 from top to bottom. The bottom of the battery cover 4 contacts the chamfered bevel of the locking block 5. Under the pressure, the locking block 5 retracts into the battery compartment. When the locking block 5 corresponds to the lock hole 9, the spring locks the locking block 5 in the lock hole 9 to prevent children from accidentally opening the battery cover 4.

[0029] In one embodiment, a reset drive plate 11 is fixedly connected to the outside of the square tube 14, and a torsion spring 12 is sleeved on the outside of the square tube 14 and between the reset drive plate 11 and the fixed housing 13. One end of the torsion spring 12 is fixedly connected to the fixed housing 13, and the other end of the torsion spring 12 is fixedly connected to the reset drive plate 11.

[0030] It should be noted that in this embodiment, when the straight-opening handle 6 drives the square tube 14 to rotate, the square tube 14 rotates and compresses the torsion spring 12 driven by the reset drive plate 11. When the external force applied to the straight-opening handle 6 is removed, the torsion spring 12 drives the square tube 14 to reset through the reset drive plate 11.

[0031] In one embodiment, one end of the rectangular rod 20 is fixedly connected to a limiting square shaft 16, which is slidably connected to a square tube 14. A pin 15 is fixedly connected to one end of the limiting square shaft 16 away from the rectangular rod 20. One end of the pin 15 is inserted into the straight-open handle 6. One end of the square tube 14 is fixedly connected to a limiting plate 18. A spring 17 is sleeved on the outside of the rectangular rod 20 and located between the limiting square shaft 16 and the limiting plate 18. One end of the transmission square shaft 10 is provided with a rectangular hole 19 that mates with the rectangular rod 20.

[0032] It should be noted that in this embodiment, a limit ring is fixed to one end of the straight-opening handle 6 to prevent the straight-opening handle 6 from separating from the door lock back cover 3. A through hole is provided at one end of the square tube 14, through which the ejector pin 15 protrudes. A round rod is fixed to one end of the rectangular rod 20. When the rectangular rod 20 separates from the rectangular hole 19, the end of the round rod is located inside the rectangular hole 19 and tangent to the inner wall of the rectangular hole 19. When unlocking, the straight-opening handle 6 is grasped and pushed inwards. As the straight-opening handle 6 slides on the outside of the square tube 14, the ejector pin 15 is pushed towards one end of the square tube 14. The pin 15 drives the rectangular rod 20 to move to one end through the limiting square shaft 16, while compressing the spring 17. The rectangular rod 20 is inserted into the rectangular hole 19 in the transmission square shaft 10. The straight-open handle 6 is rotated, and the straight-open handle 6 drives the limiting square shaft 16 and the rectangular rod 20 to rotate through the square tube 14. The rectangular rod 20 drives the transmission square shaft 10 to drive the lock body 2, thereby opening the corresponding lock tongue. After the constraint on the straight-open handle 6 is released, the torsion spring 12 drives the straight-open handle 6 to reset, and the lock body 2 drives the transmission square shaft 10 to reset.

[0033] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0034] Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "third," or "fourth" may explicitly or implicitly include at least one of those features.

[0035] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A smart door lock, characterized in that: include: Door lock front cover (1); A door lock rear cover (3) is located on the side opposite to the door lock front cover (1). A lock body (2) is installed between the door lock front cover (1) and the door lock rear cover (3). A lock cylinder (8) and a transmission square shaft (10) are installed in the middle of the lock body (2). A clutch (7) that is connected to the lock cylinder (8) is installed inside the door lock rear cover (3). The interior door opening assembly includes a fixed housing (13) movably installed inside the door lock back cover (3), a square tube (14) is rotatably connected to the middle of the fixed housing (13), a straight opening handle (6) is slidably connected to the outside of the square tube (14), and a rectangular rod (20) for driving the transmission square shaft (10) to rotate is installed inside the square tube (14). The elastic part is placed inside the square tube (14). The elastic part includes a spring (17) for driving the rectangular rod (20) to separate from the transmission square shaft (10). When opening the door, the straight handle (6) needs to be pushed inward and rotated by hand to open the door lock, thereby preventing children from opening the lock.

2. The smart door lock according to claim 1, characterized in that: A battery box is provided above the door lock back cover (3), and a battery cover (4) is slidably connected to the outside of the battery box. A lock block (5) is installed inside the battery box, and the battery cover (4) has a lock hole (9) that cooperates with the lock block (5).

3. The smart door lock according to claim 1, characterized in that: A reset drive plate (11) is fixedly connected to the outside of the square tube (14). A torsion spring (12) is sleeved on the outside of the square tube (14) and between the reset drive plate (11) and the fixed housing (13). One end of the torsion spring (12) is fixedly connected to the fixed housing (13), and the other end of the torsion spring (12) is fixedly connected to the reset drive plate (11).

4. The smart door lock according to claim 1, characterized in that: One end of the rectangular rod (20) is fixedly connected to a limiting square shaft (16), the limiting square shaft (16) is slidably connected to the square tube (14), and a pin (15) is fixedly connected to the end of the limiting square shaft (16) away from the rectangular rod (20). One end of the pin (15) is inserted into the straight handle (6).

5. A smart door lock according to claim 1, characterized in that: One end of the square tube (14) is fixed to a limiting plate (18), and the spring (17) is sleeved on the outside of the rectangular rod (20) and located between the limiting square shaft (16) and the limiting plate (18).

6. A smart door lock according to claim 1, characterized in that: One end of the transmission square shaft (10) is provided with a rectangular hole (19) that mates with the rectangular rod (20).

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