Separated electronic lock

Abstract

The utility model discloses a separated electronic lock which has the advantages of simple structure, low cost and the like, and door state sensing devices do not need to be additionally mounted at positions such as a cabinet body, a door frame and a lock catch. The separated electronic lock comprises a front-end controller, a rear-end lock body and a lock catch; the rear end lock body comprises a lock shell, a motor installed in the lock shell, a lock bolt, a circuit board, a travel switch, a sliding block, a spring and a fixing pin. A movable notch is formed in one side of the lock shell; the motor drives the lock bolt to be telescopically matched in the movable notch. The travel switch is arranged on the circuit board, and an elastic contact of the travel switch is opposite to the movable notch; the sliding block is in sliding fit in the movable notch, and a spring and a fixing pin are arranged on one surface, facing the elastic contact, of the sliding block; in an unlocking state, the lock catch is separated from the sliding block, and the fixing pin, the spring and the sliding block are pushed by the elastic force of the travel switch; in the locking state, the lock catch makes contact with the sliding block and pushes the sliding block, and then the sliding block pushes the spring, the fixing pin and the elastic contact to trigger the travel switch. And the front-end controller is in signal connection with the circuit board to realize control.

Description

Technical Field

[0001] This utility model belongs to the field of electronic lock technology, and specifically refers to a split electronic lock. Background Technology

[0002] Separate electronic locks typically separate the front-end controller (such as a keypad, card reader, or biometric module) from the rear-end lock body (the actual locking mechanism). This allows users to unlock the door without directly touching the lock body, increasing flexibility and security. For example, a user can control the lock by entering a password through a keypad mounted on the side of the door, while the lock body is located on the other side.

[0003] Most existing separate electronic locks lack door status sensing functionality, relying on a front-end controller to open and close the lock via buttons, card swipes, or other methods. A few incorporate magnets or other devices in the cabinet, door frame, or latch to achieve door status sensing. The drawbacks of these existing technologies are: the former requires a front-end controller to lock due to the lack of door status sensing; the latter is more complex to install, and the door sensing devices are easily damaged. This invention provides a door status sensing design integrated into the rear lock body, eliminating the need for additional door status sensing devices on the cabinet, door frame, or latch. Utility Model Content

[0004] The main purpose of this utility model is to provide a separate electronic lock that solves the problems existing in the prior art. It can realize the door status sensing function without the need to install additional door status sensing devices in the cabinet, door frame, lock buckle, etc., and also has the advantages of simple structure and low cost.

[0005] To achieve the above objectives, the solution of this utility model is:

[0006] A detachable electronic lock includes a front-end controller, a rear-end lock body, and a latch. The rear-end lock body includes a lock housing, and a motor, a bolt, a circuit board, a limit switch, a slider, a spring, and a retaining pin installed within the lock housing. A movable notch is provided on one side of the lock housing. The motor drives the bolt to extend and retract within the movable notch, thereby locking the latch within the notch. The limit switch is mounted on the circuit board, with its elastic contact facing the movable notch. The slider slides within the movable notch, and its side facing the elastic contact has a spring and a retaining pin. In the unlocked state, the latch disengages from the slider, and the elastic force of the limit switch pushes the retaining pin, spring, and slider. In the locked state, the latch contacts the slider and pushes it, causing the slider to push the spring, retaining pin, and elastic contact, triggering the limit switch. The front-end controller is signal-connected to the circuit board for control.

[0007] A slide block is installed within the movable notch. The slide block has a movable groove for the latch to move and engage. Both ends of the movable groove are open ports to allow the latch to move in and out. The bolt moves through the two side walls of the movable groove under the drive of the motor. The slider slides within the slide block along the pressing direction of the elastic contact.

[0008] Preferably, the movable groove of the slide block is provided with a step for the slider to slide and engage, and a limiting flange is provided on the side of the step near the limit switch. The circumferential surface of the fixing pin is provided with a limiting ring that movably abuts against the limiting flange on the side opposite to the limit switch.

[0009] Preferably, the slider has a groove on the side facing the limit switch; one end of the spring is embedded in the groove, and the other end is sleeved on the fixing pin and abuts against the limiting ring.

[0010] The slider has a guide slope on its side for the latch to slide and engage.

[0011] The rigidity of the spring is greater than the pressing rigidity of the elastic contact of the limit switch.

[0012] A transmission gear is mounted on the output shaft of the motor, and a sliding member is slidably fitted inside the lock housing. The sliding member is provided with a rack for the transmission gear to mesh with; one end of the locking bolt is mounted on the sliding member.

[0013] The circuit board is provided with connection terminals for the front-end controller to be plugged in and mated.

[0014] Preferably, the lock housing is provided with a plug-in port opposite to the connection terminal.

[0015] The detachable electronic lock also includes a cover plate that fits over the lock housing.

[0016] After adopting the above technical solution, the present invention has the following technical effects:

[0017] This invention provides a door status sensing design for a split electronic lock. This design eliminates the need for additional door status sensing devices in the cabinet, door frame, or latch, while also offering advantages such as simple structure and low cost. Based on door status sensing, this invention enables locking upon closing the door, eliminating the need to operate the front-end controller after closing. Specifically, the slider and limit switch are not rigidly connected; instead, force is transmitted via a spring and a fixing pin. By limiting the position of the fixing pin, when the limit switch is triggered, the latch continues to push the slider, compressing the spring but not the limit switch. This prevents excessive slider travel that could impact the limit switch, while maintaining the sensitivity of the door status sensing. Furthermore, in the locked state, the spring can push the slider in the opposite direction to hold the latch in place, reducing the movement gap of the latch within the rear lock body after locking. Attached Figure Description

[0018] Figure 1 This is a perspective view of a specific embodiment of the present utility model.

[0019] Figure 2 This is a front view of a specific embodiment of the present utility model.

[0020] Figure 3 This is an exploded view of the rear lock body and latch of a specific embodiment of this utility model.

[0021] Figure 4 This is a perspective view of the unlocked state of a specific embodiment of the present utility model.

[0022] Figure 5 This is a front view of the unlocked state (hidden cover plate) of a specific embodiment of this utility model.

[0023] Figure 6 This is a cross-sectional view of the unlocked state of a specific embodiment of this utility model.

[0024] Figure 7 This is a perspective view of the locked state of a specific embodiment of the present invention.

[0025] Figure 8 This is a front view of the locked state (hidden cover plate) of a specific embodiment of the present invention.

[0026] Figure 9 This is a cross-sectional view of the locked state of a specific embodiment of the present utility model.

[0027] Explanation of icon numbers:

[0028] 1-Front-end controller;

[0029] 2-Rear lock body; 21-Lock housing; 211-Modible notch; 212-Plug-in port; 22-Motor; 221-Drive gear; 23-Lock bolt; 24-Circuit board; 241-Connecting terminal; 25-Limit switch; 251-Resilient contact; 26-Slider; 261-Groove; 262-Sliding ramp; 27-Spring; 28-Fixing pin; 281-Limit ring; 29-Sliding component; 291-Rack;

[0030] 3-Lock;

[0031] 4-Slide; 41-Modular groove; 42-Step; 43-Limiting flange. Detailed Implementation

[0032] To further explain the technical solution of this utility model, the following detailed description is provided through specific embodiments.

[0033] refer to Figure 1-9 As shown, this utility model discloses a split electronic lock, including a front controller 1, a rear lock body 2 and a latch 3; wherein, the rear lock body 2 includes a lock shell 21, and a motor 22, a bolt 23, a circuit board 24, a limit switch 25, a slider 26, a spring 27 and a fixing pin 28 installed in the lock shell 21.

[0034] A movable notch 211 is provided on one side of the lock case 21;

[0035] The motor 22 is used to drive the bolt 23 to extend and retract within the movable notch 211, so as to realize the locking latch 3 that is engaged within the movable notch 211;

[0036] Limit switch 25 is mounted on circuit board 24, with its elastic contact 251 facing the movable notch 211;

[0037] The slider 26 is slidably fitted in the movable notch 211, and a spring 27 and a fixing pin 28 are provided on the side facing the elastic contact 251.

[0038] In the unlocked state, the latch 3 disengages from the slider 26, and the elastic force of the limit switch 25 pushes the fixing pin 28, the spring 27, and the slider 26; in the locked state, the latch 3 contacts the slider 26 and pushes the slider 26, which in turn causes the slider 26 to push the spring 27, the fixing pin 28, and the elastic contact 251, triggering the limit switch 25.

[0039] The front-end controller 1 is connected to the circuit board 24 via signals to achieve control.

[0040] Through the above solution, this utility model provides a door status sensing design for a split electronic lock. This design eliminates the need for additional door status sensing devices in the cabinet, door frame, and latch, while also offering advantages such as simple structure and low cost. Based on door status sensing, this utility model enables locking upon closing the door, eliminating the need to operate the front-end controller to lock after closing the door. Specifically, the slider 26 and the limit switch 25 are not rigidly connected, but rather the force is transmitted through a spring 27 and a fixing pin 28. By limiting the fixing pin 28, when the limit switch 25 is triggered, the latch 3 continues to push the slider 26, only compressing the spring 27 without pushing the limit switch 25. This avoids excessive travel of the slider 26, which could cause the limit switch 25 to be impacted, while maintaining the sensitivity of the door status sensing. Furthermore, in the locked state, the spring 27 can push the slider 26 in the opposite direction to hold the latch 3, reducing the movement gap of the latch 3 within the rear lock body 2 after locking.

[0041] The following are specific embodiments of the present invention.

[0042] The aforementioned front-end controller 1 can output an unlocking signal to the circuit board 24 of the rear lock body 2 through keypad password, card swipe or physical plug-in. After receiving the new unlocking signal, the circuit board 24 controls the motor 22 to work, so that it drives the bolt 23 to move so that the bolt 23 disengages from the latch 3, thereby completing the unlocking.

[0043] Furthermore, the aforementioned circuit board 24 is provided with connection terminals 241 for the front-end controller 1 to be plugged into and cooperate with.

[0044] Secondly, the aforementioned lock housing 21 is provided with a plug-in port 212 opposite to the connection terminal 241, for guiding the front-end controller 1 to be inserted into the connection terminal 241.

[0045] A slide block 4 is installed within the aforementioned movable notch 211. The slide block 4 has a movable groove 41 for the latch 3 to move and engage. Both ends of the movable groove 41 are open ports to allow the latch 3 to enter and exit. The bolt 23 moves through the two side walls of the movable groove 41 under the drive of the motor 22. The slider 26 slides within the slide block 4 along the pressing direction of the elastic contact 251. The slide block 4, independent of the lock housing 21, can be made of a more rigid material to ensure the firmness of the latch 3 after locking.

[0046] Furthermore, the movable groove 41 of the slide block 4 is provided with a step 42 for the sliding engagement of the slider 26. A limiting flange 43 is provided on the side of the step 42 near the limit switch 25, and a limiting ring 281 is provided on the circumferential surface of the fixing pin 28 to movably abut against the limiting flange 43 on the side opposite to the limit switch 25. Thus, the fixing pin 28 is limited by the limiting flange 43 and the limiting ring 281. When the limit switch 25 is triggered, even if the latch 3 continues to push the slider 26, it will only compress the spring 27 and will not push the limit switch 25. This avoids the limit switch 25 from being impacted due to excessive stroke of the slider 26, while maintaining the sensitivity of the door status sensing.

[0047] Secondly, the slider 26 has a groove 261 on the side facing the limit switch 25; one end of the spring 27 is embedded in the groove 261, and the other end is sleeved on the fixing pin 28 and abuts against the limiting ring 281.

[0048] The slider 26 is provided with a guide ramp 262 on its side for sliding engagement of the latch 3. By designing the sliding ramp 261, a guide can be provided when the latch 3 is pressed into the movable notch 211, making it easier to push the slider 26 to move.

[0049] The rigidity of the spring 27 is greater than the pressing rigidity of the elastic contact 251 of the limit switch 25, so that the limit switch 25 can be triggered after the latch 3 pushes the slider 26 to move a short distance.

[0050] A transmission gear 221 is mounted on the output shaft of the motor 22. A sliding member 29 is slidably fitted inside the lock housing 21. The sliding member 29 is provided with a rack 291 for the transmission gear 221 to mesh with. One end of the locking bolt 23 is mounted on the sliding member 29. Thus, the torque output by the motor 22 can be converted into a force that drives the locking bolt 23 to move linearly.

[0051] This utility model also includes a cover plate that fits onto the lock housing 21, thereby covering the internal components.

[0052] refer to Figure 4-9 As shown, the working principle of this utility model is as follows:

[0053] When the door is opened, the latch 3 disengages from the rear lock body 2, and the elastic force of the limit switch 25 can push the slider 26, spring 27 and fixing pin 28, switching from the pressure-triggered state to the free state (not triggered), thus completing the transmission of the door opening signal.

[0054] When the door is closed, the latch 3 fixed on the cabinet / door frame is pushed into the rear lock body 2; when the latch 3 is pushed into the rear lock body 2, it will press the slider 26 in, and the pressed slider 26 will push the fixing pin 28 through the spring 27. When the fixing pin 28 moves, it will trigger the limit switch 25 on the circuit board 24 to complete the transmission of the door closing signal.

[0055] The above embodiments and figures are not intended to limit the product form and style of this utility model. Any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the patent scope of this utility model.

Claims

1. A split electronic lock characterized in that: it comprises a front controller, a rear lock body and a lock catch; the rear lock body comprises a lock shell, and a motor, a lock bolt, a circuit board, a travel switch, a sliding block, a spring and a fixing pin installed in the lock shell; one side of the lock shell is provided with a movable notch; the motor is used to drive the lock bolt to extend or retract in the movable notch, so as to realize the movable locking of the lock catch in the movable notch; the travel switch is arranged on the circuit board, and its elastic contact is opposite to the movable notch; the sliding block is slidingly fitted in the movable notch, and one side of the sliding block facing the elastic contact is provided with the spring and the fixing pin; in the unlocking state, the lock catch is separated from the sliding block, and the elastic force of the travel switch pushes the fixing pin, the spring and the sliding block; in the locking state, the lock catch contacts the sliding block and pushes the sliding block, so that the sliding block pushes the spring, the fixing pin and the elastic contact, and triggers the travel switch; the front controller is signal connected with the circuit board to realize control.

2. The split electronic lock according to claim 1 characterized in that: a sliding seat is installed in the movable notch, the sliding seat is provided with a movable slot for the movable locking of the lock catch, and both ends of the movable slot are open ports so that the lock catch can go in and out; the lock bolt is movably penetrated through the two side walls of the movable slot under the driving of the motor; and the sliding block is slidingly fitted in the sliding seat along the pressing direction of the elastic contact.

3. The split electronic lock according to claim 2 characterized in that: a step for the sliding block to slidingly fit is arranged in the movable slot of the sliding seat, one side of the step close to the travel switch is provided with a limiting flange, and the circumferential surface of the fixing pin is provided with a limiting ring movably abutting against one side of the limiting flange away from the travel switch.

4. The split electronic lock according to claim 3 characterized in that: one side of the sliding block facing the travel switch is provided with a groove; one end of the spring is embedded in the groove, and the other end of the spring is sleeved on the fixing pin and abuts against the limiting ring.

5. The split electronic lock according to claim 1 characterized in that: one side of the sliding block is provided with a guide inclined surface for the sliding block to slidingly fit.

6. The split electronic lock according to claim 1 characterized in that: the rigidity of the spring is greater than the pressing rigidity of the elastic contact of the travel switch.

7. The split electronic lock according to claim 1 characterized in that: a transmission gear is installed on the output shaft of the motor, a sliding member is slidingly fitted in the lock shell, the sliding member is provided with a rack for the transmission gear to engage, and one end of the lock bolt is installed on the sliding member.

8. The split electronic lock according to claim 1 characterized in that: the circuit board is provided with a connection terminal for the front controller to plug-in fit.

9. The split electronic lock according to claim 8 characterized in that: the lock shell is provided with a plug-in port opposite to the connection terminal.

10. The split electronic lock according to claim 1 characterized in that: it further comprises a cover plate covering the lock shell.

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