CN202672872U - Mechanical electronic door lock - Google Patents
Mechanical electronic door lock Download PDFInfo
- Publication number
- CN202672872U CN202672872U CN 201220321581 CN201220321581U CN202672872U CN 202672872 U CN202672872 U CN 202672872U CN 201220321581 CN201220321581 CN 201220321581 CN 201220321581 U CN201220321581 U CN 201220321581U CN 202672872 U CN202672872 U CN 202672872U
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- Prior art keywords
- door lock
- electronic door
- mechano
- control system
- chip microcomputer
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Abstract
The utility model discloses a mechanical electronic door lock. The mechanical electronic door lock is connected with a residential central control unit through an electrical signal circuit; the mechanical electronic door lock is provided with an infrared communication control system, namely an infrared data transmitting circuit is arranged in a remote controller; and the mechanical electronic door lock is also provided with an infrared data receiving circuit corresponding to infrared data signals transmitted by the infrared data transmitting circuit. Various other facilities and appliances in a residence are controlled through the residential central control unit by using the signals transmitted by the mechanical electronic door lock; if the mechanical electronic door lock is artificially damaged, the residential central control unit communicates with a communication operating network and transmits information to a mobile phone carried by a family member, and the family member calls the police and timely processes the information; and the mechanical electronic door lock can be unlocked or locked by using the infrared communication control system and inputting a preset unlocking password to the remote controller at certain distance, so the mechanical electronic door lock is easy and convenient to operate, and the safety performance is greatly improved.
Description
Technical field
The utility model belongs to the technical field of lockset.The technology that relates to remote control gate lock.More particularly, the utility model relates to the mechano-electronic door lock at the dwelling house gate that is applied to esidential building.
Background technology
In the prior art, the door lock at the dwelling house gate of esidential building is comprised of key, lock core, lock body and snap close.Rotate when key inserts lockhole, snap close is moved, play and unblank and the function of locking.
Also have a lot of other domestic installations in the general esidential building, comprise apparatus, the utensils such as electric, water supply, combustion gas, can carry out centralized Control to them by central control unit now, and described central control unit arranges communicating terminal, and described communicating terminal is by signal of telecommunication circuit and the networking of communication Operation Network.
Described communication Operation Network is exactly the service network of present public telecommunication operators such as China Mobile, CHINAUNICOM and China Telecom; Or the internet, all can provide the home terminal service.
Described communicating terminal can be a telephone or mobile phone, or computer, central control unit carries out wired or wireless the connection with it, by the state live signal of communicating terminal with the various utensils of the premises that obtains, and the real time environment signal of premises is by the communication Operation Network, the mobile phone that carries with the family member communicates, and can in real time the situation of dwelling house inside be reported to the family member, and by the family member facility in the family be carried out Artificial Control.For example, can be before going home, open in advance air-conditioning and freeze or heat; Can the pre-cooling miscellaneous equipment.Like this, just can be when not needing to open electrical appliance in, it is closed, such as ligthing paraphernalia, electric heating appliance, refrigerator, washing machine, air-conditioner and television set etc., play the effect of using electricity wisely.
But the large door lock of dwelling house of the prior art is not but also set up safety and managerial the contact with them.
For example, in keyless situation, take special mode, as: under the destruction of master key, screwdriver, electric drill etc., the dwelling house gate is opened, so can not get reliable guarantee at secure context; And the profile of key is basic identical, easily obscures, and also brings unnecessary trouble to the user.
Particularly the owner at dwelling house stays out, and occurs that door lock is destroyed, the dwelling house gate is by in the undesired situation about opening, and owner can't in time be warned.
From the integrated management aspect of home amenity, apparatus utensil, go out the owner of dwelling house, on the dwelling house gate lock after, can't to the various facilities in the family, manage such as apparatus utensils such as electric, water supply, combustion gas, signals.
The utility model content
The problem that the utility model solves provides a kind of mechano-electronic door lock, its objective is the security performance and the operating characteristics that improve lockset.
To achieve these goals, the technical scheme taked of the utility model is:
The mechano-electronic door lock that the utility model provides is applied to the dwelling house gate of esidential building, is provided with the dwelling house central control unit in the described esidential building, and described mechano-electronic door lock comprises mechano-electronic Door lock and remote controller;
Described mechano-electronic door lock is connected with described dwelling house central control unit by signal of telecommunication circuit;
Described mechano-electronic door lock is provided with the infrared communication control system, and described infrared communication control system is provided with the infrared data radiating circuit at described remote controller;
Described infrared communication control system also is provided with the corresponding infrared data receiving circuit of the infrared data signal of launching with described infrared data radiating circuit at described mechano-electronic Door lock;
Described mechano-electronic Door lock is provided with electric lock head, and described electric lock head is driven by direct current generator, and the control circuit of described direct current generator is connected with described infrared communication control system.
Described infrared communication control system is provided with single-chip microcomputer at described mechano-electronic Door lock, and the control signal circuit of described direct current generator is connected with described single-chip microcomputer.
The structure of described electric lock head is: establish the snap close tooth bar at snap close, and described snap close tooth bar and the engagement of snap close gear, described snap close gear is driven by described direct current generator.
Described infrared communication control system is established LED light, and described LED light is connected by signal line with described single-chip microcomputer.
Described infrared communication control system is established buzzer, and described buzzer is connected by signal line with described single-chip microcomputer.
The infrared communication control system is established the charactron display, and described charactron display is connected by signal line with described single-chip microcomputer.
Described mechano-electronic door lock is established power supply interface, and the voltage of described power supply interface is 12V, and described power supply interface is connected with described single-chip microcomputer by the voltage-stabilized power supply of 5V; Described power supply interface is connected with the motor circuit of described direct current generator.
Described infrared communication control system is established memory, and described memory is connected by signal line with described single-chip microcomputer.
Described infrared communication control system is established expansion interface, and described expansion interface is connected by signal line with described single-chip microcomputer.
Described single-chip microcomputer adopts the STC89C52 chip.
The utility model adopts technique scheme, utilizes locking that the mechano-electronic door lock sends or the signal of unlatching, by the dwelling house central control unit other all kinds of facilities, apparatus in the dwelling house is controlled; If the mechano-electronic door lock by artificial destruction, can contact by dwelling house central control unit and communication Operation Network, information is passed to the mobile phone that the family member carries, reported to the police by the family member and also in time process; Utilize the infrared communication control system, in certain distance, to the default unlocking cipher of remote controller input, by different key, can unblank or lock, easy and simple to handle, greatly improve security performance; Simple in structure, solid durable, the scope of application is wide, can not cause potential safety hazard because of losing with random containing key.
Description of drawings
The below is briefly described the expressed content of each width of cloth accompanying drawing of this manual and the mark among the figure:
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the schematic diagram of infrared emission special chip HT6221 of the present utility model;
Fig. 3 is the structural representation of electric lock head;
Fig. 4 is the schematic top plan view of structure shown in Figure 3;
Fig. 5 is power circuit diagram of the present utility model;
Fig. 6 is the control circuit figure of direct current generator;
Fig. 7 is the utility model main program block diagram;
Fig. 8 is the pin key diagram of single-chip microcomputer.
Part numeral and letter among Fig. 2, Fig. 5, Fig. 6 and Fig. 8 are the numbering of circuit, pin and port, not as Reference numeral.
Reference numeral is among Fig. 1, Fig. 3 and Fig. 4:
1, single-chip microcomputer, 2, direct current generator, 3, electric lock head, 4, buzzer, 5, the charactron display, 6, voltage-stabilized power supply, 7, power supply interface, 8, LED light, 9, memory, 10, expansion interface, 11, snap close, 12, the snap close tooth bar, 13, the snap close gear, 14, the tapered end housing.
The specific embodiment
The below contrasts accompanying drawing, by the description to embodiment, the specific embodiment of the present utility model is described in further detail, and to help those skilled in the art inventive concept of the present utility model, technical scheme is had more complete, accurate and deep understanding.
The of the present utility model structure expressed such as Fig. 1 for a kind of mechano-electronic door lock, comprises mechano-electronic Door lock and remote controller.This mechano-electronic door lock is applied to the dwelling house gate of esidential building, is provided with the dwelling house central control unit in the described esidential building.Described dwelling house central control unit arranges communicating terminal, and described communicating terminal is by signal of telecommunication circuit and the networking of communication Operation Network.
This dwelling house central control unit is microcomputer; Cell controller on each utensil in household electrical appliance in the described esidential building, water supply and the gas appliance all is connected with described dwelling house central control unit by signal of telecommunication circuit.
Described cell controller with regard to electrical appliance, comprises switch, the time relay etc.; For the water supply apparatus, be mainly the water pipe electromagnetic switch valve; For gas appliance, be mainly Gas Pipe electromagnetic switch valve etc.
Described dwelling house central control unit comprises control module arithmetic unit, control module memory, input port and output port, above-described each utensil converts the real time data of himself to data signal, send the input port of dwelling house central control unit to, after the analysis of process dwelling house central control unit, the judgement, send the execution instruction by output port to each utensil again.
Adopt technique scheme, realize the centralized Control of all kinds of water, electricity and gas appliance in the family, and other facility is controlled, improve safety, the environmental protection of using and the convenience of controlling; Its control system adopts computer control, realizes Based Intelligent Control, and reliability is high, be quick on the draw, accuracy of judgement, and compatible with existing communication apparatus, versatility is good.
The problem that exists in order to solve prior art, overcome the defective of existing door lock, realize improving the security performance of lockset and the goal of the invention of operating characteristics, this mechano-electronic door lock that the utility model provides, not only security performance is high, and is easy to use, and is installed in the inboard at dwelling house gate, outward appearance is invisible, is to reach the purpose of unblanking under the state without remote controller.
For this reason, the technical scheme taked of the utility model is:
The mechano-electronic door lock that the utility model provides is connected with described dwelling house central control unit by signal of telecommunication circuit; Described signal of telecommunication circuit is wireless signal circuit or wire signal circuit.
Described mechano-electronic door lock is provided with the infrared communication control system, and described infrared communication control system is provided with the infrared data radiating circuit at described remote controller;
Described infrared communication control system also is provided with the corresponding infrared data receiving circuit of the infrared data signal of launching with described infrared data radiating circuit at described mechano-electronic Door lock.
This mechano-electronic door lock is carried out machinery and the dual snap close of electronics, and the layman leaves, when door lock is from the stock lock, send signal for the dwelling house central control unit, by the dwelling house central control unit, no electrical equipment in the family is cut off the electricity supply, such as ligthing paraphernalia, electric heating appliance and television set etc.; And by the dwelling house central control unit other utensil is judged, if do not close, then it is closed, such as utensils such as water supply, combustion gas.
In addition, if unmanned in the family, described mechano-electronic door lock is by artificial destruction, namely stolen in the family, can contact by dwelling house central control unit and communication Operation Network, information is passed to the mobile phone that the family member carries, be reported to the police by the family member and also in time process.
An embodiment of the present utility model is:
Described mechano-electronic door lock is provided with machinery control and the electronically controlled interlocking mechanism of dual snap close.The purpose of this interlocking mechanism is: only have when opening simultaneously the dwelling house gate with electron key and mechanical key, just can open it; And only the dwelling house gate cannot be opened with one of them key, this has just increased the security performance at dwelling house gate, has played the effect of double insurance, the generation of the event that avoids theft.
Described mechano-electronic Door lock is provided with electric lock head 3, and described electric lock head 3 is driven by direct current generator 2, and the control circuit of described direct current generator 2 is connected with described infrared communication control system.
The utility model adopts Infrared Remote Control Lock(to be called for short IRCL) technology, namely adopt the infrared data transmission technology, its technical scheme is that the information exchange of user's input is crossed infrared emitting in reception control circuit, and each functional circuit was controlled in domination after reception control circuit gathered infrared data.Be also referred to as IRCL.
The theory diagram of IRCL of the present utility model as shown in Figure 1, overall plan the function of the required realization of each several part circuit of whole system, and the function of expansion.
The utility model is widely used in management, the safe antitheft field of home amenity apparatus, and intelligentized management, anti-theft technique have been protected family's goods and materials property of user effectively.
Below will introduce in detail and analyze the each several part design main points of the utility model system.
1, infrared communication principle:
Infrared rays is the electromagnetic wave of wavelength between 750nm to 1mm, and its frequency is higher than microwave and is lower than visible light, is the light that a kind of people's eyes be can't see.The general infrared wavelength that adopts of infrared communication is between 0.75um to 25um.
Infrared communication is to utilize infrared technique to realize the wireless near field communication of point-to-point transmission, and it generally is comprised of infrared emission and receiving system two parts.Emission system is modulated rear emission infrared signal to an infrared emitter, and receiving system is received by Optical devices and Infrared Detectors, thereby consists of infrared communication system.
The transmission principle of infrared data is:
Transmitting terminal is modulated into a series of burst signal (carrier signal) with binary data, launches by infrared transmitting tube and resolves and be reduced into binary data after the infrared signal receiving terminal receives the pulse signal string.
Fig. 2 is infrared transmitting circuit HT6221.Adopt 32 key infrared emission special chip HT6221 to finish this part circuit among the IRCL of the present utility model, the HT6221 pin function is with reference to Fig. 2.Only use 16 buttons of its K1～K16 in the actual fabrication.
Receiving terminal is by single-chip microcomputer 1(S52) to finish, infrared receiver device uses universal models H0038, and it is very simple with being connected of single-chip microcomputer 1, and signal output part is directly connected to the P32 mouth of single-chip microcomputer 1, connects power supply and gets final product.
Below in conjunction with components and parts should be used for describe that the utility model each several part hardware consists of and control principle in detail.
2, single-chip microcomputer and direct current generator:
Infrared communication control system described in the utility model is provided with single-chip microcomputer 1 at described mechano-electronic Door lock, and the control signal circuit of described direct current generator 2 is connected with described single-chip microcomputer 1.
Requirement to single-chip microcomputer: can gather infrared data, the peripheral hardwares such as growth data storage and output control IO get final product.Common single-chip microcomputer has the single-chip microcomputer of 8051 series, the single-chip microcomputer of 8096 series, the Ling Yang single-chip microcomputer of SPCE061A.
Direct current generator 2 adopts the 6V minitype speed reducing motor.The control circuit of direct current generator 2 as shown in Figure 6.
3, the structure of electric lock head described in the utility model is:
As shown in Figure 3 and Figure 4, establish snap close tooth bar 12 on the snap close 11 on the electric lock head 3, described snap close tooth bar 12 is driven by described direct current generator 2 with snap close gear 13 engagements, described snap close gear 13.When direct current generator 2 obtains to drive signal and rotate, drive snap close gear 13 and rotate; Rotating drive snap close tooth bar 12 rectilinear motions of snap close gear 13; Snap close tooth bar 12 is as a whole with snap close 11, so snap close 11 is also made same rectilinear motion, realizes locking or unblanking.
Shown in the figure, snap close 11, snap close tooth bar 12, snap close gear 13 and direct current generator 2 all are located in the tapered end housing 14.The modulus of snap close gear 13 and snap close tooth bar 12 is 0.5mm.
4, LED light:
Infrared communication control system described in the utility model is established LED light 8, and described LED light 8 and described single-chip microcomputer 1 are connected by signal line.
The LED light circuit is an indispensable part on many electronic products, because this is one of important channel of the information interaction between "smart" products and the people.
The circuit of the LED light 8 in the utility model is fairly simple, just can make it bright or go out as long as the IO of single-chip microcomputer 1 gives 8 one high or low level of LED light, the user can select the LED light of different colours light and different size size in design.
Should connect the in actual applications resistance in 100～1K Europe of LED light 8 is shunted, and crosses senior general LED with the filling electric current of the IO mouth that prevents single-chip microcomputer 1 and damages.
The utility model uses the effect of LED light to be: the result after user's operation shows; Password correctly unblanks to show; Password miscue and power work indication.
5, buzzer:
Infrared communication control system described in the utility model is established buzzer 4, and described buzzer 4 and described single-chip microcomputer 1 are connected by signal line.
As shown in Figure 1, send signal by single-chip microcomputer 1, control buzzer 4 sends the prompt tone of unblanking and locking.
6, charactron display:
The infrared communication control system is established charactron display 5, and described charactron display 5 and described single-chip microcomputer 1 are connected by signal line.Be that 6 charactrons show.
The formation of LED digital pipe display circuit and numerical character:
LED is digital to show that it can provide directly perceived, eye-catching digital information to the user on the many electronic products that are widely used in the daily life, and it is relatively using not fragile, easy care in the rugged environment.
Be the LED charactron pictorial diagram of one-bit digital such as Fig. 3.
7, system power supply circuit of the present utility model:
The power circuit of system as shown in Figure 5.
That is: described mechano-electronic door lock is established power supply interface 7, and the voltage of described power supply interface 7 is 12V, and described power supply interface 7 is connected with described single-chip microcomputer 1 by the voltage-stabilized power supply 6 of 5V; Described power supply interface 7 is connected with the motor circuit of described direct current generator 2.
Because the electric lock head operating voltage is DC12V, therefore the outside 12V Power supply of hardware using socket, with modal three-terminal voltage-stabilizing module LM7805 the 12V voltage stabilizing is supplied with SCM system to 5V, 10R1W resistance of input serial connection of 12V, prevent that the LM7805 operating current is excessive and increase calorific value, be provided with simultaneously power supply indicator.
8, memory:
Infrared communication control system described in the utility model is established memory 9, and described memory 9 and described single-chip microcomputer 1 are connected by signal line.
Memory 9 is used for the storage of growth data, is (Flsah) data storage in the sheet.
9, expansion interface:
Described infrared communication control system is established expansion interface 10, and described expansion interface 10 and described single-chip microcomputer 1 are connected by signal line.
10, single-chip microcomputer 1 described in the utility model adopts the STC89C52 chip.
The characteristics of single-chip microcomputer STC89C52:
8 8051 single-chip microcomputers are commonplace for the electronic production aspect, all can grasp fast instruction also can skillfully use, therefore to select the STC89C52 of 8051 series be master chip to IRCL in the utility model, this chip has low-power consumption, high performance characteristics, is 8 single-chip microcomputers that adopt CMOS technique.
The pin of STC89C52 as shown in Figure 8, DIP40 increases the P4 mouth, and 36 I/O are arranged.
11, the design of software:
Software code uses the KEIL compiler to write, and program is comprised of the control function of several circuit, and the FB(flow block) of main program as shown in Figure 7.
12, user's operating process:
(1), unblank:
Press acknowledgement key (EN) behind 6 passwords of input continuously, if the correct buzzing of password one, demonstration " OPEN ", green LED indication and driving electric lock head 3 open the door; If password mistake buzzing one, demonstration " Err " and red LED indication password mistake.If inputting continuously 3 bad password systems will lock in 10 seconds and can not operate.
(2), Modify password:
Press and key (S) is set enters current password verification state, show " Set " this moment, inputs continuously 6 Old Passwords again by acknowledgement key (EN);
A: Old Password correctly will show " PASS " and a prompting of buzzing, then input 6 new passwords and confirm to get final product by acknowledgement key (EN), return holding state after 5 seconds.
B: the Old Password mistake will show " Err ", a prompting of buzzing and red LED misdirection information, return holding state without operation after 5 seconds, and continuous 3 input error cryptographic systems will lock in 10 seconds and can not operate.
(3), cancellation Password Input:
Can return holding state by cancel key (ES) when inputing password.
(4), Password Input is overtime:
Can not surpass 5 seconds the blanking time of input digit when inputing password, otherwise need to re-enter password after returning holding state.
(5), reset:
6 passwords that reset are " 000000 "; Press and key (S) is set enters the state of setting, show " Set " this moment, inputs continuously to press after 6 " 8 " key (S) once is set again, and returns holding state after showing " PASS " and locking 5 seconds, resets successfully.
(6), the user in 5 seconds, switch lock at any time.But behind the overtime, must input password.
(7), pressing the A1 key closes.
(8), in the situation that lock is out, be inoperative by unblanking again; It also is like this shutting equally.
The above has carried out exemplary description to the utility model by reference to the accompanying drawings; obviously the utility model specific implementation is not subjected to the restriction of aforesaid way; as long as adopted the improvement of the various unsubstantialities that method of the present utility model design and technical scheme carry out; or without improving design of the present utility model and technical scheme are directly applied to other occasion, all within protection domain of the present utility model.
Claims (10)
1. mechano-electronic door lock is applied to the dwelling house gate of esidential building, is provided with the dwelling house central control unit in the described esidential building; Described mechano-electronic door lock comprises mechano-electronic Door lock and remote controller;
It is characterized in that:
Described mechano-electronic door lock is connected with described dwelling house central control unit by signal of telecommunication circuit;
Described mechano-electronic door lock is provided with the infrared communication control system, and described infrared communication control system is provided with the infrared data radiating circuit at described remote controller;
Described infrared communication control system also is provided with the corresponding infrared data receiving circuit of the infrared data signal of launching with described infrared data radiating circuit at described mechano-electronic Door lock;
Described mechano-electronic Door lock is provided with electric lock head (3), and described electric lock head (3) is driven by direct current generator (2), and the control circuit of described direct current generator (2) is connected with described infrared communication control system.
2. according to mechano-electronic door lock claimed in claim 1, it is characterized in that: described infrared communication control system is provided with single-chip microcomputer (1) at described mechano-electronic Door lock, and the control signal circuit of described direct current generator (2) is connected with described single-chip microcomputer (1).
3. according to mechano-electronic door lock claimed in claim 2, it is characterized in that: the structure of described electric lock head (3) is: establish snap close tooth bar (12) at snap close (11), described snap close tooth bar (12) and snap close gear (13) engagement, described snap close gear (13) is driven by described direct current generator (2).
4. according to mechano-electronic door lock claimed in claim 2, it is characterized in that: described infrared communication control system is established LED light (8), and described LED light (8) is connected by signal line with described single-chip microcomputer (1).
5. according to mechano-electronic door lock claimed in claim 2, it is characterized in that: described infrared communication control system is established buzzer (4), and described buzzer (4) is connected by signal line with described single-chip microcomputer (1).
6. according to mechano-electronic door lock claimed in claim 2, it is characterized in that: described infrared communication control system is established charactron display (5), and described charactron display (5) is connected by signal line with described single-chip microcomputer (1).
7. according to mechano-electronic door lock claimed in claim 2, it is characterized in that: described mechano-electronic door lock is established power supply interface (7), the voltage of described power supply interface (7) is 12V, and described power supply interface (7) is connected with described single-chip microcomputer (1) by the voltage-stabilized power supply (6) of 5V; Described power supply interface (7) is connected with the motor circuit of described direct current generator (2).
8. according to mechano-electronic door lock claimed in claim 2, it is characterized in that: described infrared communication control system is established memory (9), and described memory (9) is connected by signal line with described single-chip microcomputer (1).
9. according to mechano-electronic door lock claimed in claim 2, it is characterized in that: described infrared communication control system is established expansion interface (10), and described expansion interface (10) is connected by signal line with described single-chip microcomputer (1).
10. according to mechano-electronic door lock claimed in claim 2, it is characterized in that: described single-chip microcomputer (1) adopts the STC89C52 chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220321581 CN202672872U (en) | 2012-07-05 | 2012-07-05 | Mechanical electronic door lock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220321581 CN202672872U (en) | 2012-07-05 | 2012-07-05 | Mechanical electronic door lock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202672872U true CN202672872U (en) | 2013-01-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220321581 Expired - Fee Related CN202672872U (en) | 2012-07-05 | 2012-07-05 | Mechanical electronic door lock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202672872U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108708654A (en) * | 2018-05-24 | 2018-10-26 | 夏文斌 | A kind of environmental protection toilet door-locking system device |
| CN110796766A (en) * | 2019-11-08 | 2020-02-14 | 北京工业大学 | Multifunctional door opening system applied to student dormitory door lock |
-
2012
- 2012-07-05 CN CN 201220321581 patent/CN202672872U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108708654A (en) * | 2018-05-24 | 2018-10-26 | 夏文斌 | A kind of environmental protection toilet door-locking system device |
| CN110796766A (en) * | 2019-11-08 | 2020-02-14 | 北京工业大学 | Multifunctional door opening system applied to student dormitory door lock |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130116 Termination date: 20130705 |