CN216341503U - Door lock anti-prying alarm device and door lock adopting door lock anti-prying alarm device - Google Patents
Door lock anti-prying alarm device and door lock adopting door lock anti-prying alarm device Download PDFInfo
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- CN216341503U CN216341503U CN202122630246.5U CN202122630246U CN216341503U CN 216341503 U CN216341503 U CN 216341503U CN 202122630246 U CN202122630246 U CN 202122630246U CN 216341503 U CN216341503 U CN 216341503U
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Abstract
The utility model relates to a door lock anti-prying alarm device which comprises an opening and closing selection module, an induction module, an alarm module and a power supply module, wherein the opening and closing selection module, the induction module, the alarm module and the power supply module are connected in series to form a trigger loop; the opening and closing selection module is used for controlling the opening and closing of the anti-prying alarm circuit; the sensing module is used for monitoring the relative distance between the door lock and the door body, and when the relative distance reaches or exceeds a critical value, the sensing module is connected with the anti-prying alarm circuit; the alarm module is used for sending out an alarm signal or an alarm sound. The induction module acquires relative distance information between the door lock and the door body, when a thief destroys the door lock, the relative distance between the door lock and the door body reaches a critical value, an internal circuit of the induction module is conducted, and then the triggering loop is conducted to enable the alarm module to be electrified to work, the alarm module sends out an alarm signal or alarm sound to remind a user, and the user can know that the door lock is pried through the alarm information, so that the safety is improved.
Description
Technical Field
The utility model relates to the field of door locks, in particular to a door lock anti-prying alarm device and a door lock adopting the door lock anti-prying alarm device.
Background
Along with the popularization of electronic lock products and the gradual improvement of user safety awareness, the existing electronic lock does not only need to support diversified unlocking modes, but also is often required to support security functions such as pick-proof alarm and the like. For designing lockset products which are produced and used in batch without considering the realization of the anti-prying alarm function in the early stage, if the anti-prying alarm function needs to be added, a controller scheme needs to be redesigned, and the scheme design usually needs to consider the problems of but not limited to circuit principle, hardware logic, system interruption, code capacity space, compatibility of new and old components, controller layout size, structural space interference and the like. Therefore, lockshop or solution suppliers need to redesign and test the electronic, structural and process solutions, and the development and verification period is long and the cost is high.
For example, chinese patent document No. CN101603386B discloses a pick-proof alarm door lock, the pick-proof alarm device of the door lock monitors a pick-proof event by using a combination of a permanent magnet in a lock catch box and a magnetic induction switch, and when the permanent magnet is far away from the lock tongue due to the pick-proof event and no longer triggers the magnetic induction switch, the alarm circuit is closed to trigger an alarm, the pick-proof alarm device has certain feasibility, but only a magnet is placed at the lock tongue housing, the magnetic induction switch can be continuously triggered, the pick-proof alarm function is disabled, and the reliability is low. Meanwhile, if the anti-prying alarm device is transplanted to other door lock products, the structural schemes of the door lock main body and the lock catch box need to be redesigned.
For example, chinese patent document No. CN101487363B discloses a pick-proof alarm lock body, which mainly comprises a lock bolt, a housing and an elastic support device, wherein when the door is subjected to an acting force in a larger opening direction, the door and the lock bolt will compress or stretch the elastic support device together, the elastic support point will shift towards the force direction to cause the lock bolt to shift, so that the door and the door frame will shift, and a pick-proof event is monitored by a displacement sensor. Although this scheme can monitor the lock picking incident to a certain extent, still need collocation warning circuit can send out the alarm response, and this scheme needs the space that occupies more simultaneously, and the structure cost is too high.
To the tool to lock that has accomplished the design and put into use, be difficult to additionally add pick-proof alarming function on the basis that does not change original lock controller, structural scheme, independent pick-proof alarm module is not found in the market at present, can install and adapt to in the tool to lock under the condition that does not change original design to accomplish the tool to lock upgrading fast reliably.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a door lock anti-prying alarm device which is simple in structure, operates independently and is strong in universality.
The second purpose of the utility model is to provide a door lock with a door lock pick-proof alarm function.
The first object of the present invention is achieved by:
a door lock anti-prying alarm device comprises an opening and closing selection module, a sensing module, an alarm module and a power supply module, wherein the opening and closing selection module, the sensing module, the alarm module and the power supply module are connected in series to form a trigger loop;
the opening and closing selection module is used for controlling the opening and closing of the anti-prying alarm circuit;
the sensing module is used for monitoring the relative distance between the door lock and the door body, and when the relative distance reaches or exceeds a critical value, the sensing module is connected with the anti-prying alarm circuit;
the alarm module is used for sending out an alarm signal or an alarm sound.
The induction module acquires relative distance information between the door lock and the door body, when a thief destroys the door lock, when the relative distance between the door lock and the door body reaches a critical value, an internal circuit of the induction module is conducted, and then a trigger circuit is conducted to enable the alarm module to be electrified to work, the alarm module sends out an alarm signal or alarm sound to remind a user, the user can know that the door lock is prized through the alarm information, and the alarm sound also plays a role in scaring away a thief, so that the safety is greatly improved.
The first object of the present invention can also be solved by the following technical measures:
furthermore, the opening and closing selection module is provided with a toggle switch which controls the connection and disconnection of the trigger loop, so that the door lock is opened/closed to prevent prying and alarm. The user can break or electrically conduct the trigger circuit through the toggle switch, thereby independently selecting the anti-prying and alarming functions of opening/closing the door lock, and meeting the requirements of different users.
Further, the alarm module is a buzzer. The buzzer can convert an electric signal into an acoustic signal, can generate a buzzing alarm response when the trigger circuit is conducted, can work without a control chip and a vibration starting circuit, and is simple in principle.
Furthermore, the intelligent alarm device further comprises a PCB, wherein the PCB is provided with a through hole convenient to mount, a trigger circuit is integrated on the PCB, and the opening and closing selection module, the induction module, the alarm module and the power supply module are welded on the PCB to be connected with the trigger circuit. The door lock anti-prying alarm device is independent of a door lock controller and a working circuit thereof, the door lock anti-prying alarm device can work independently by switching on a battery, a user can lock the door lock anti-prying alarm device on a door lock by utilizing a bolt to penetrate through a PCB (printed circuit board), the door lock anti-prying alarm device is realized to be 'plug and play', the possibility that the door lock which is installed on a door body or is put into use for years is upgraded in field functions is realized, and the practicability of the door lock anti-prying alarm device is greatly improved.
Furthermore, the induction module is a photoelectric switch, a stroke induction switch, a pulley switch or a non-self-locking key switch.
When the induction module adopts the photoelectric switch, the stroke induction switch acquires the relative distance information between the door lock and the door body, when a thief damages the door lock and causes the relative distance between the door lock and the door body to reach a critical value, the photoelectric switch is exposed to the outside, the photoelectric switch is not shielded, so that the internal circuit of the photoelectric switch is conducted, the trigger circuit is conducted to enable the alarm module to be electrified to work, the alarm module sends out an alarm signal or an alarm sound to remind a user, the user can know that the door lock is pried through the alarm information, and the alarm sound plays a role in scaring away a thief, so that the safety is greatly improved.
When the induction module of the utility model adopts a stroke induction switch, a pulley switch or a non-self-locking key switch, because the door lock is arranged on the door body, a relative distance is formed between the door lock and the door body, meanwhile, the door lock always presses the pulley switch or the non-self-locking key switch, when a thief destroys the door lock and causes the relative distance between the door lock and the door body to reach a critical value, the pressing stroke of the door lock on the pulley switch or the non-self-locking key switch is changed, so that the internal circuit of the pulley switch or the non-self-locking key switch is conducted, further to lead the triggering loop to be conducted, lead the alarm module to be electrified and work, and adopt a pulley switch or a non-self-locking key switch, the mechanical switch has the advantages of no electric energy loss in a non-working state, good energy-saving effect, no need of detecting an input signal in real time through a controller, no misjudgment or misoperation caused by the fault of the controller, and high functional reliability.
The power supply module comprises a power supply battery and a switch assembly, the power supply battery, the switch assembly and the trigger circuit are connected in series, the power supply battery supplies power for the alarm module, and the switch assembly controls the trigger circuit to be switched on and off. And a power supply battery of the power supply module independently supplies power for the alarm module, so that the door lock anti-prying alarm device can independently work.
The second object of the present invention is achieved by:
a door lock comprises a front handle seat, a lock body, a rear handle seat, an intelligent unlocking module and a battery, wherein the lock body is arranged in a door body;
the intelligent unlocking module and the door lock anti-prying alarm device are arranged on the front handle seat, the battery is arranged on the front handle seat or the rear handle seat, the intelligent unlocking module and the door lock anti-prying alarm device are respectively electrically connected with the battery, the sensing end of the sensing module faces the surface of the door body, and the sensing module monitors the relative distance between the front handle seat and the surface of the door body.
The door lock anti-prying alarm device is independent of a door lock controller and a working circuit thereof, the door lock anti-prying alarm device can work independently by connecting a battery, the door lock anti-prying alarm device is 'plug and play', the possibility that a door lock which is installed on a door body or is put into use for years is upgraded, the practicability of the door lock anti-prying alarm device is greatly improved, the induction module acquires relative distance information between the door lock and the door body, when the distance reaches a critical value, an internal circuit of the induction module is conducted, a trigger circuit is conducted to enable the alarm module to be electrified to work, the alarm module sends out an alarm signal or alarm sound to remind a user, the user can know that the door lock is pried through the alarm information, and the alarm sound also plays a role of scaring away a thief, so that the safety is greatly improved.
The second object of the present invention can also be solved by the following technical measures:
the intelligent unlocking device comprises a door lock pick-proof alarm device, a battery, a deconcentrator and an intelligent unlocking module, wherein the head of the deconcentrator is connected with the battery, the tail of the deconcentrator is divided into two paths, one path is connected with a power supply module of the door lock pick-proof alarm device, and the other path is connected with the intelligent unlocking module. The door lock anti-prying alarm device utilizes the deconcentrator to connect the battery of the door lock, so that the door lock anti-prying alarm device can work independently of a door lock controller, the circuit principle, the hardware logic, the system interruption sequence, the code capacity and the board distribution size of the original door lock controller are not changed, and under the condition that the controller schemes are difficult to change greatly, such as the lack of a controller chip interface, the insufficient code capacity, the insufficient board distribution space of the controller and the like, if an anti-prying alarm function needs to be added, the anti-prying alarm module directly adopted can greatly reduce the difficulty and the cost of the electronic scheme upgrading of the lock, and greatly shorten the development period.
Furthermore, the door lock anti-prying alarm device also comprises room temperature vulcanized silicone rubber, and the door lock anti-prying alarm device is stuck on the front handle seat or the lock body through the room temperature vulcanized silicone rubber.
The door lock anti-prying alarm device is independent of a door lock controller and a working circuit thereof, the door lock anti-prying alarm device can work independently by being connected with a battery, a user directly fixes the door lock anti-prying alarm device at a proper position of a door lock through room temperature vulcanized silicone Rubber (RTV), the module is used for realizing plug and play, the possibility that the lock which is installed on a door body or is put into use for years is upgraded in field functions is realized, and the practicability of the door lock anti-prying alarm device is greatly improved.
Furthermore, the intelligent unlocking module is a face recognition unlocking module or a password unlocking module.
The utility model has the following beneficial effects:
the door lock anti-prying alarm device is independent of a door lock controller and a working circuit thereof, the door lock anti-prying alarm device can work independently by connecting a battery, the door lock anti-prying alarm device is 'plug-and-play', the possibility that a door lock which is installed on a door body or is put into use for years is improved, the practicability of the door lock anti-prying alarm device is greatly improved, the induction module acquires the relative distance information between the door lock and the door body, when the distance reaches a critical value, the internal circuit of the induction module is conducted, so that a trigger circuit is conducted to enable the alarm module to be powered on to work, the alarm module sends out an alarm signal or an alarm sound to remind a user, the user can know that the door lock is pried through the alarm information, and the alarm sound also plays a role of scaring away thieves, so that the safety is greatly improved.
The utility model relates to a door lock anti-prying alarm device, which utilizes a deconcentrator to connect a battery of a door lock, so that the door lock anti-prying alarm device can work independently of a door lock controller, does not change the circuit principle, hardware logic, system interruption sequence, code capacity and board distribution size of the original door lock controller, and can greatly reduce the difficulty and cost of upgrading an electronic scheme of a lock and greatly shorten the development period if an anti-prying alarm function needs to be added under the condition that the controller schemes are difficult to change greatly, such as the shortage of chip interfaces of the controller, the shortage of code capacity, the shortage of board distribution space of the controller and the like.
When the induction module adopts the photoelectric switch, the stroke induction switch acquires the relative distance information between the door lock and the door body, when a thief damages the door lock and causes the relative distance between the door lock and the door body to reach a critical value, the photoelectric switch is exposed to the outside, the photoelectric switch is not shielded, so that the internal circuit of the photoelectric switch is conducted, the trigger circuit is conducted to enable the alarm module to be electrified to work, the alarm module sends out an alarm signal or an alarm sound to remind a user, the user can know that the door lock is pried through the alarm information, and the alarm sound plays a role in scaring away a thief, so that the safety is greatly improved.
When the induction module of the utility model adopts a stroke induction switch, a pulley switch or a non-self-locking key switch, because the door lock is arranged on the door body, a relative distance is formed between the door lock and the door body, meanwhile, the door lock always presses the pulley switch or the non-self-locking key switch, when a thief destroys the door lock and causes the relative distance between the door lock and the door body to reach a critical value, the pressing stroke of the door lock on the pulley switch or the non-self-locking key switch is changed, so that the internal circuit of the pulley switch or the non-self-locking key switch is conducted, further to lead the triggering loop to be conducted, lead the alarm module to be electrified and work, and adopt a pulley switch or a non-self-locking key switch, the mechanical switch has the advantages of no electric energy loss in a non-working state, good energy-saving effect, no need of detecting an input signal in real time through a controller, no misjudgment or misoperation caused by the fault of the controller, and high functional reliability.
The door lock anti-prying alarm device is independent of a door lock controller and a working circuit thereof, the door lock anti-prying alarm device can work independently by being connected with a battery, a user directly fixes the door lock anti-prying alarm device at a proper position of a door lock through room temperature vulcanized silicone Rubber (RTV), the plug-and-play of a module is realized, the possibility of completing the field function upgrade of a lock which is installed on a door body or is put into use for years is realized, and the practicability of the door lock anti-prying alarm device is greatly improved.
According to the utility model, the door lock anti-prying alarm device is independent of the door lock controller and the working circuit thereof, the door lock anti-prying alarm device can work independently when being connected with a battery, a user can lock the door lock anti-prying alarm device on the door lock by penetrating a PCB (printed circuit board) through a bolt, the 'plug and play' of the door lock anti-prying alarm device is realized, the possibility of field function upgrading of the door lock which is installed on a door body or is put into use for years is realized, and the practicability of the door lock anti-prying alarm device is greatly improved.
Drawings
Fig. 1 is a schematic view of a door lock anti-prying alarm device according to embodiment 1.
Fig. 2 is a schematic circuit diagram of the door lock anti-prying alarm device according to embodiment 1.
Fig. 3 is a schematic circuit diagram of the door lock anti-prying alarm device according to embodiment 2.
Fig. 4 is a schematic view of a door body mounted to the door lock of embodiment 3.
Fig. 5 is a schematic diagram showing the door lock and the door body separated in embodiment 3.
Fig. 6 is a schematic diagram of the door lock anti-prying alarm device and the intelligent unlocking module according to embodiment 3, which are connected with a battery through a wire divider.
Fig. 7 is a schematic circuit diagram of an alarm module of the door lock anti-prying alarm device according to embodiment 3.
Fig. 8 is a schematic view of a tamper-proof alarm determining method of the door lock tamper-proof alarm device according to embodiment 3.
Detailed Description
The utility model is further described with reference to the following figures and examples:
The PCB circuit board 5 is provided with a through hole 51 convenient to install, the trigger circuit is integrated on the PCB circuit board 5, the opening and closing selection module 1, the induction module 2, the alarm module 3 and the power supply module 4 are processed in the PCB circuit board 5 in a plug-in welding mode, the trigger circuit is formed by connecting internal copper wires in series, and coating processes such as paint sealing and the like are adopted to avoid short circuit or misoperation caused by exposed electric shock of the modules due to moisture or dust interference.
The opening and closing selection module 1 is provided with a toggle switch 11, and the toggle switch 11 controls the on and off of the trigger circuit, so that the door lock is opened/closed to prevent prying and alarm.
The induction module 2 is a stroke induction switch, a pulley switch or a non-self-locking key switch, the induction module 2 is used for monitoring the relative distance between the door lock and the door body, and when the relative distance reaches or exceeds a critical value, the induction module 2 is connected with a prying-resistant alarm circuit.
The alarm module 3 can select an electronic buzzer such as an active buzzer to convert an electric signal into an acoustic signal, when the trigger circuit is conducted, the alarm module 3 can send out a buzzing alarm, and the alarm module can work without a control chip or a vibration starting circuit.
The power supply module 4 is a circuit board or a switch for adjusting voltage.
In embodiment 3, referring to fig. 4 to 8, a door lock 6 using a door lock anti-prying alarm device includes a front handle holder 61, a lock body 62, a rear handle holder 63, an intelligent unlocking module 64, a battery 65 and a wire divider 7, wherein the lock body 62 is disposed in the door body 8, the front handle holder 61 is disposed on the surface of the door body 8, the front handle holder 61 is connected to the lock body 62, the rear handle holder 63 is disposed on the back of the door body 8, and the rear handle holder 63 is connected to the lock body 62.
The user uses the bolt to pass through the through hole 51 of the PCB circuit board 5 and lock on the front handle seat 61, and the door lock anti-prying alarm device is installed on the front handle seat 61.
Further, after the door lock anti-prying alarm device is assembled, a user can fix the door lock anti-prying alarm device on the front handle seat 61 by using room temperature vulcanized silicone Rubber (RTV), which is not shown in the figure, on one hand, the door lock anti-prying alarm device can be reliably fixed on the door lock 6, and on the other hand, the door lock anti-prying alarm device can play a role in moisture prevention and static prevention.
If the induction module 2 adopts a travel induction switch, the battery 65 supplies power to the travel induction switch through the deconcentrator 7, the induction end of the travel induction switch faces the surface of the door body 8, and the travel induction switch monitors the relative distance between the front handle seat 61 and the surface of the door body 8, so that the on-off of the trigger circuit is controlled.
Furthermore, in order to reduce the cost of the door lock anti-prying alarm device and reduce the power loss in a non-alarm state, the sensing module 2 can be implemented by a pulley switch or a non-self-locking key switch, so that the power loss in the non-working state is zero.
If the door lock 6 is damaged, a relative distance is generated between the front handle seat 61 and the door body 8, meanwhile, the pressing stroke of the front handle seat 61 on the pulley switch or the non-self-locking key switch is changed, when the relative distance reaches a critical value, the internal circuit of the pulley switch or the non-self-locking key switch is conducted, and further, the trigger circuit is conducted, and the alarm module 3 is electrified to work.
Referring to fig. 8, a method for judging a tamper-proof alarm of a door lock tamper-proof alarm device includes the following steps:
the method comprises the following steps: a user controls the conduction of the anti-prying alarm circuit through the opening and closing selection module 1 to start the anti-prying alarm function;
step two: if the relative distance between the front handle seat 61 and the door body 8 reaches or exceeds a critical value, the sensing module 2 is connected with the anti-prying alarm circuit, the power supply module 4 supplies power to the alarm module 3 through the trigger circuit, and the alarm module 3 sends out an alarm signal or an alarm sound;
step three: if the relative distance between the front handle seat 61 and the door body 8 does not reach or exceed the critical value, the sensing module 2 disconnects the anti-prying alarm circuit, and the alarm module 3 stops working.
When the induction module 2 adopts the stroke induction switch, the stroke induction switch acquires the relative distance information between the door lock 6 and the door body 8, when a thief destroys the door lock 6 and the relative distance between the door lock 6 and the door body 8 reaches a critical value, the internal circuit of the stroke induction switch is conducted, so that the trigger circuit is conducted to enable the alarm module 3 to be electrified and operated, the alarm module 3 sends out an alarm signal or an alarm sound to remind a user, the user can know that the door lock 6 is pried through the alarm information, and the alarm sound also plays a role in scaring away thieves, so that the safety is greatly improved.
When the sensing module 2 of the utility model adopts a pulley switch or a non-self-locking key switch, because the door lock 6 is arranged on the door body 8, a relative distance is formed between the door lock 6 and the door body 8, and simultaneously the door lock 6 always presses the pulley switch or the non-self-locking key switch, when a thief damages the door lock 6 and causes that the relative distance between the door lock 6 and the door body 8 reaches a critical value, the pressing stroke of the door lock 6 to the pulley switch or the non-self-locking key switch is changed, so that the internal circuit of the pulley switch or the non-self-locking key switch is conducted, further the triggering circuit is conducted, the alarm module 3 is electrified to work, and the pulley switch or the non-self-locking key switch is adopted, the mechanical switch has no electric energy loss in a non-working state, has good energy-saving effect, does not need to detect an input signal in real time through a controller, so that misjudgment or misoperation can not occur due to the fault of the controller, the functional reliability is high.
Claims (9)
1. The utility model provides a lock pick-proof alarm device, is including opening and close selection module, response module, alarm module and power module, its characterized in that: the on-off selection module, the induction module, the alarm module and the power supply module are connected in series to form a trigger loop;
the opening and closing selection module is used for controlling the opening and closing of the anti-prying alarm circuit;
the sensing module is used for monitoring the relative distance between the door lock and the door body, and when the relative distance reaches or exceeds a critical value, the sensing module is connected with the anti-prying alarm circuit;
the alarm module is used for sending out an alarm signal or an alarm sound.
2. The door lock pick-proof alarm device according to claim 1, wherein: the opening and closing selection module is provided with a toggle switch which controls the on-off of the trigger circuit, so that the door lock is opened/closed and the anti-prying alarm function is realized.
3. The door lock pick-proof alarm device according to claim 1, wherein: still include the PCB circuit board, the PCB circuit board is opened has the through-hole of being convenient for the installation, and the integration has a trigger circuit on the PCB circuit board moreover, open and close selection module, response module, alarm module and power module welding switch-on trigger circuit on the PCB circuit board.
4. The door lock pick-proof alarm device according to claim 1, wherein: the induction module is a photoelectric switch, a stroke induction switch, a pulley switch or a non-self-locking key switch.
5. The door lock pick-proof alarm device according to claim 1, wherein: the power supply module comprises a power supply battery and a switch assembly, the power supply battery, the switch assembly and the trigger circuit are connected in series, the power supply battery supplies power for the alarm module, and the switch assembly controls the trigger circuit to be switched on and off.
6. A door lock adopting the anti-prying alarm device of the door lock according to any one of claims 1 to 4, comprising a front handle seat, a lock body, a rear handle seat, an intelligent unlocking module and a battery, wherein the lock body is arranged in the door body, the front handle seat is arranged on the surface of the door body, the front handle seat is connected with the lock body, the rear handle seat is arranged on the back surface of the door body, and the rear handle seat is connected with the lock body;
the intelligent unlocking module and the door lock anti-prying alarm device are arranged on the front handle seat, the battery is arranged on the front handle seat or the rear handle seat, the intelligent unlocking module and the door lock anti-prying alarm device are respectively electrically connected with the battery, the sensing end of the sensing module faces the surface of the door body, and the sensing module monitors the relative distance between the front handle seat and the surface of the door body.
7. A door lock with a tamper-proof alarm device according to claim 6, wherein: the anti-prying door lock alarm device further comprises a deconcentrator, the head of the deconcentrator is connected with the battery, the tail of the deconcentrator is divided into two paths, one path is connected with a power supply module of the door lock anti-prying alarm device, and the other path is connected with the intelligent unlocking module.
8. A door lock with a tamper-proof alarm device according to claim 6, wherein: the door lock anti-prying alarm device is adhered to the front handle seat or the lock body through the room-temperature silicon sulfide rubber.
9. A door lock with a tamper-proof alarm device according to claim 6, wherein: the intelligent unlocking module is a face recognition unlocking module or a password unlocking module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122630246.5U CN216341503U (en) | 2021-10-30 | 2021-10-30 | Door lock anti-prying alarm device and door lock adopting door lock anti-prying alarm device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122630246.5U CN216341503U (en) | 2021-10-30 | 2021-10-30 | Door lock anti-prying alarm device and door lock adopting door lock anti-prying alarm device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216341503U true CN216341503U (en) | 2022-04-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122630246.5U Active CN216341503U (en) | 2021-10-30 | 2021-10-30 | Door lock anti-prying alarm device and door lock adopting door lock anti-prying alarm device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216341503U (en) |
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2021
- 2021-10-30 CN CN202122630246.5U patent/CN216341503U/en active Active
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