CN106930620B - Electronic lock and control method thereof - Google Patents

Abstract

The invention relates to a lockset, and aims to provide an electronic lock with high practicability and safety and a control method of the electronic lock, so that the problem that a user cannot normally unlock the electronic lock or unlock the electronic lock by an illegal molecular technology is solved. The electronic lock comprises an electronic lock core and a control system, wherein the electronic lock core comprises a lock core shell, an unlocking rotating shaft and an electromagnetic element locking mechanism, the control system is electrically connected with the electromagnetic element locking mechanism and controls the electromagnetic element locking mechanism to perform unlocking action on the unlocking rotating shaft, the electronic lock core also comprises a mechanical key mechanism and a detection mechanism, the detection mechanism is electrically connected with the control system, the detection mechanism is connected with the mechanical key mechanism and is used for detecting the unlocking action of the mechanical key mechanism and generating an unlocking state signal of the mechanical key mechanism, and the control system can control the electromagnetic element locking mechanism to perform locking action according to the unlocking state signal.

Description

Electronic lock and control method thereof

Technical Field

The present invention relates to a lock, and more particularly, to an electronic lock and a control method thereof.

Background

The existing fingerprint anti-theft lock needs to be provided with a 'rear door' (namely, the existing fingerprint anti-theft lock can be directly unlocked by using a mechanical key under the condition of power failure or emergency) under the safety standard of an industry standard. In order to meet the standard, the fingerprint anti-theft lock generally uses a mechanical emergency mode. The user can twist the lock cylinder to unlock only by inserting a proper mechanical key. The mode has great potential safety hazard, and lawbreakers can easily use the 'back door' to bypass the fingerprint function and can easily open the lock by directly using a master key or some technical unlocking skills. The fingerprint lock loses its security by virtue of the "back door" arrangement.

If the fingerprint anti-theft lock is not arranged according to the mode, the electronic lock cylinder is adopted, the solenoid is set to be in a locking state in a default mode, namely, one end of the solenoid can stretch into the lock cylinder groove under the default position, and when lawbreakers unlock the lock by utilizing machinery, the solenoid limits the lock cylinder to rotate, so the lock cannot be unlocked. However, this method cannot meet the safety regulations, and the user cannot directly unlock the lock with the key in case of power failure or other emergency.

Therefore, the industry needs a lock which can meet the safety standard, avoid potential safety hazards and prevent lawbreakers from unlocking easily.

Disclosure of Invention

Based on the above, the technical problem to be solved by the invention is to provide the electronic lock with high practicability and safety and the control method of the electronic lock, so that the problem that a user cannot normally unlock the electronic lock or unlock the electronic lock by an illegal molecular technology is avoided.

The utility model provides an electronic lock, includes electronic lock core and control system, electronic lock core includes lock core casing, unblock pivot and electromagnetic component blocked mechanical system, control system with electromagnetic component blocked mechanical system electricity is connected, and control electromagnetic component blocked mechanical system unlocks the action to the unblock pivot, electronic lock core still includes mechanical key mechanism and detection mechanism, detection mechanism with the control system electricity is connected, detection mechanism with mechanical key mechanism connects, is used for detecting mechanical key mechanism's unblock action and production mechanical key mechanism's unblock state signal, control system can be according to unblock state signal control electromagnetic component blocked mechanical system carries out the locking action.

In one embodiment, the mechanical key mechanism comprises a mechanical unlocking component and a lock bolt, wherein the mechanical unlocking component and the lock bolt are arranged in the unlocking rotating shaft, and the lock bolt is used for unlocking the unlocking rotating shaft; the detection mechanism comprises a detection thimble, and the detection thimble is in separable contact with the lock bolt; when an unlocking key is inserted into the mechanical unlocking part and is correctly matched with the mechanical unlocking part, the lock plunger can be separated from the detection thimble and generates an unlocking state signal of the mechanical key mechanism.

In one embodiment, the head of the detection thimble is of an arc-shaped structure, and the lock bolt is correspondingly provided with a groove for accommodating the head of the detection thimble.

In one embodiment, the electronic lock cylinder further comprises a code reading mechanism, wherein the code reading mechanism is electrically connected with the control system and is used for reading an ID code on an unlocking key; the control system can control the electromagnetic element locking mechanism to perform corresponding unlocking action according to the unlocking state signal and the read ID code.

In one embodiment, the code reading mechanism comprises a code reading thimble, the unlocking key is provided with a code reading area, and when the unlocking key is inserted into the mechanical unlocking part, the code reading thimble is in contact with the code reading area.

In one embodiment, the code reading thimble comprises a first code reading thimble arranged in the unlocking rotating shaft and a second code reading thimble arranged in the lock cylinder shell, one end of the first code reading thimble can be connected with a code reading area on an inserted unlocking key, and the other end of the first code reading thimble is abutted against one end of the second code reading thimble; the first code reading thimble can be separated from the second code reading thimble when rotating and unlocking along with the mechanical key mechanism.

In one embodiment, the second reading head part is of a circular arc-shaped structure.

In one embodiment, the electromagnetic component locking mechanism further comprises a detection device for detecting the change of the unlocking state of the electromagnetic component locking mechanism and outputting an unlocking state signal of the electromagnetic component locking mechanism to the control system, and the control system can control the electromagnetic component locking mechanism to return to the unlocking state before the change according to the unlocking state signal.

A control method of an electronic lock adopts the electronic lock, and the method comprises the following steps: the detection mechanism detects the unlocking action of the mechanical key mechanism, and when the mechanical key mechanism is unlocked, the detection mechanism generates an unlocking signal; and the control system controls the electromagnetic element locking mechanism to perform locking action according to the unlocking signal.

A control method of an electronic lock adopts the electronic lock, the electronic lock further comprises a code reading mechanism connected with a control system, and the method is characterized by comprising the following steps: the detection mechanism detects the unlocking action of the mechanical key mechanism, and when the mechanical key mechanism is unlocked, the detection mechanism generates an unlocking signal; the code reading mechanism reads the ID code of the unlocking key; when the ID code is correct, the control system controls the electromagnetic element locking mechanism to keep an unlocked state; when the ID code is wrong, the control system controls the electromagnetic element locking mechanism to perform locking action.

According to the electronic lock, under the condition that the electronic lock has an electric or fingerprint lock and has a normal function, if an unlocking key with a correct tooth profile is inserted for mechanical unlocking, the detection system detects the unlocking action of the mechanical key mechanism and generates an unlocking state signal of the mechanical key mechanism, the control system detects the generated unlocking state signal, and the control system controls the electromagnetic element locking mechanism to be locked, so that the mechanical key mechanism cannot drive the unlocking shaft to rotate, technical unlocking by lawbreakers can be prevented under the condition that the lock has an electric or fingerprint lock and has a normal function, and only fingerprint or password unlocking can be adopted, so that the safety of the door lock is improved. Under the condition that an electronic system is abnormal, a proper unlocking key is inserted, the detection system can also detect the unlocking action of the mechanical key mechanism and generate an unlocking state signal of the mechanical key mechanism, but the control system cannot normally work and cannot control the electromagnetic element locking mechanism to lock, and at the moment, the mechanical key mechanism can rotate and unlock, so that the safety specification of the industry is met, and the electronic system can be unlocked by directly using the key under the abnormal condition.

Drawings

FIG. 1 is a cross-sectional view of an electronic lock and an unlocking key according to the present invention;

FIG. 2 is an enlarged cross-sectional view of the electronic lock cylinder of FIG. 1;

FIG. 3 is an enlarged view taken at I in FIG. 2;

FIG. 4 is an enlarged view taken at II in FIG. 2;

description of the drawings:

an unlocking key 100; an ID code chip 110; a code-reading conductive strip 120;

an electronic lock cylinder 200; unlocking the rotating shaft 210;

an electromagnetic element locking mechanism 220; a solenoid 221; a plunger 222; a magnet 223; a return spring 224;

a mechanical key authority 230; a mechanical unlocking member 231; a latch 232;

a detection thimble 240;

a code reading mechanism 250; a first code reading thimble 251; a second code reading thimble 252; a first elastic member 253; a second elastic member 254; a stopper 255;

a cylinder housing 260;

an infrared sensor 300.

Detailed Description

Reference will now be made in detail to the present embodiments of the invention, examples of which are illustrated in the accompanying drawings, but which can be embodied in many different forms and varied in the manner defined and covered by the claims.

Referring to fig. 1 and 2, in one embodiment of the present invention, an electronic lock includes an electronic lock cylinder 200, a control system, and a detection device. The electronic lock cylinder 200 comprises a lock cylinder shell 260, an electromagnetic element locking mechanism 220 and an unlocking rotating shaft 210, wherein the electromagnetic element locking mechanism 220 is arranged in the lock cylinder shell 260, and a control system is electrically connected with the electromagnetic element locking mechanism 220 and controls the electromagnetic element locking mechanism 220 to unlock the unlocking rotating shaft 210; the detection device is connected to the control system, and is configured to detect a change in an unlocking state of the electromagnetic element locking mechanism 220, and output an unlocking state signal of the electromagnetic element locking mechanism 220 to the control system, and the control system can control the electromagnetic element locking mechanism 220 to return to the unlocking state before the change according to the unlocking state signal.

In the electronic lock of the above embodiment, when the electromagnetic element locking mechanism 220 is in the unlocked state, the door lock is subjected to an external force, the electromagnetic element locking mechanism 220 is switched from the unlocked state to the locked state, the detection device detects that the state of the electromagnetic element locking mechanism 220 is changed, and the control system controls the electromagnetic element locking mechanism 220 to return to the original unlocked state. The situation that a user cannot unlock the lock by using electronic unlocking modes such as fingerprints and passwords or by using a key in an emergency is avoided, and the stability of using the door lock by the user is ensured.

When the electromagnetic element locking mechanism 220 is in the locked state, the door lock is subjected to an external force, the electromagnetic element locking mechanism 220 is switched from the locked state to the unlocked state, the detection device detects that the state of the electromagnetic element locking mechanism 220 is changed, and the control system controls the electromagnetic element locking mechanism 220 to return to the original locked state. The problem that the control system cannot accurately control the locking of the electromagnetic element locking mechanism 220 when a lawless person unlocks the door technically is avoided, and the safety performance of the door lock is ensured.

In one embodiment, referring to fig. 3, the electromagnetic element locking mechanism 220 includes an electromagnetic element, a first retaining member and a second retaining member, wherein a locking member driven by the electromagnetic element is disposed in the electromagnetic element, the locking member can extend into and out of the unlocking rotary shaft for unlocking and locking, the first retaining member is used for maintaining an unlocking state of the locking member, and the second retaining member is used for maintaining a locking state of the locking member. Specifically, the electromagnetic element is a solenoid 221, the latch is a plunger 222 provided in the solenoid 221, the first holding member is a magnet 223 for attracting the plunger 222, and the second holding member is a return elastic member 224 for holding the plunger 222 away from the magnet 223. When the magnet 223 attracts the plunger 222, the electromagnetic element locking mechanism 220 is unlocked. The return elastic element 224 is preferably a spring, and is sleeved at one end of the plunger 222, and the other end of the plunger 222 can be inserted into the unlocking rotating shaft 210 of the electronic lock to lock the electronic lock. In order to save energy consumption, the solenoid 221 is designed to have a bistable structure, that is, when the coil of the solenoid 221 is energized with a forward voltage, the magnetism generated by the movable iron core 222 is different from the magnetism of the magnet 223 arranged at the bottom of the key cylinder housing 260, according to the principle of opposite attraction, the magnet 223 overcomes the elastic force of the spring to attract the movable iron core 222, and at this time, the movable iron core 222 is separated from the unlocking rotating shaft 210 and is in an unlocking state. At this time, even if the power is turned off, the magnet 223 attracts the plunger 222 by its own magnetic force, and the plunger 222 maintains a stable state by the magnet 223. When the coil is energized with reverse voltage, the magnetism generated by the movable iron core 222 is the same as that of the magnet 223, and according to the principle that like poles repel each other, the movable iron core 222 moves towards the direction away from the magnet 223, so that when a certain distance is reached, even if power is off, the magnetic force of the magnet 223 is not enough to overcome the spring force to attract the movable iron core 222 back, and the movable iron core 222 keeps another stable state under the action of the spring.

In one embodiment, the detection device includes a position sensor, preferably an infrared sensor 300, and the movement of the plunger 222 when the solenoid latching mechanism 220 is unlatched is detected by the infrared sensor 300. Other contact sensors or hall sensors can also be used as the position sensor.

Specifically, the two infrared sensors 300 are arranged and respectively arranged on two sides of the movable iron core 222 in the radial direction, when one end of the movable iron core 222 is separated from the magnet 223 and the other end of the movable iron core is inserted into a groove on the unlocking rotating shaft 210 of the electronic lock to be locked, communication between the two infrared sensors 300 is communicated to generate a locking state signal, the movable iron core 222 is adsorbed on the magnet 223, and when the movable iron core retracts from the groove on the unlocking rotating shaft 210 to be unlocked, communication between the two infrared sensors 300 is interrupted to generate an unlocking state signal.

Alternatively, the movable core 222 is provided with a reflecting surface capable of reflecting infrared rays, and the infrared sensor 300 receives the infrared rays reflected by the reflecting surface and generates an unlocking state signal. The end face of the movable iron core 222 close to the magnet 223 is a reflecting surface, the infrared sensor 300 is arranged in the magnet 223 and can emit infrared rays to the reflecting surface, and whether the movable iron core 222 moves or not is judged by utilizing the characteristic that different voltages are generated in a circuit by the distance between the reflecting surface of the movable iron core 222 and the infrared sensor 300. When the plunger 222 is detached from the magnet 223, the infrared sensor 300 generates a lock state signal, and when the plunger 222 is attached to the magnet 223, the infrared sensor 300 generates an unlock state signal. The reflective surface may be provided on the circumferential surface of the plunger 222, and the infrared sensor 300 may be provided on one side of the plunger 222 in the radial direction thereof, so as to determine the position of the plunger 222 based on whether or not the infrared reflected by the plunger 222 is detected. When the movable iron core 222 is separated from the magnet 223, the infrared sensor 300 generates a locking state signal, and when the movable iron core 222 is adsorbed on the magnet 223, the infrared sensor 300 generates an unlocking state signal.

In order to increase the security of the electronic lock and prevent a lawless person from easily unlocking the electronic lock, the electronic lock core 200 is further provided with a mechanical key mechanism 230 and a detection mechanism. The detection mechanism is electrically connected to the control system, the detection mechanism is connected to the mechanical key mechanism 230, and is configured to detect an unlocking operation of the mechanical key mechanism 230 and generate an unlocking state signal of the mechanical key mechanism 230, and the control system can control the electromagnetic element locking mechanism 220 to perform a locking operation according to the unlocking state signal.

Under the condition that the electronic lock has an electric or fingerprint lock with normal function, if an unlocking key with correct tooth profile is inserted for mechanical unlocking, the detection system detects the unlocking action of the mechanical key mechanism and generates an unlocking state signal of the mechanical key mechanism, the control system detects the generated unlocking state signal and controls the electromagnetic element locking mechanism to be locked, so that the mechanical key mechanism cannot drive the unlocking rotating shaft to rotate, and therefore, lawless persons can be prevented from technically unlocking under the condition that the lock has the electric or fingerprint lock with normal function, and only fingerprint or password unlocking can be adopted, and the safety of the door lock is improved. Under the condition that an electronic system is abnormal, a proper unlocking key is inserted, the detection system can also detect the unlocking action of the mechanical key mechanism and generate an unlocking state signal of the mechanical key mechanism, but the control system cannot normally work and cannot control the electromagnetic element locking mechanism to lock, and at the moment, the mechanical key mechanism can rotate and unlock, so that the safety specification of the industry is met, and the electronic system can be unlocked by directly using the key under the abnormal condition.

The mechanical key mechanism 230 includes a mechanical unlocking component 231, the mechanical unlocking component 231 is installed on the unlocking rotating shaft 210 of the electronic lock, the unlocking rotating shaft 210 can be driven to rotate and unlock by rotating the mechanical unlocking component 231, and the mechanical unlocking component can be a lock blade or other structure in the prior art. A lock bolt 232 is arranged in the unlocking rotating shaft 210 and used for unlocking the unlocking rotating shaft. The detection mechanism comprises a detection thimble 240, and the detection thimble 240 is separably contacted with the latch 232; when the unlocking key 100 is inserted into the mechanical unlocking member 231 and is correctly matched with the mechanical unlocking member 231, the latch 232 retracts into the unlocking spindle, and the latch 232 is disengaged from the detection pin 240 to generate an unlocking state signal of the mechanical key mechanism 230. When the unlocking key 100 is improperly matched with the mechanical unlocking member 231, the plunger 232 cannot be retracted into the unlocking shaft, and the unlocking shaft 210 cannot be rotated for unlocking. The thimble is adopted to combine with the lock plunger 232 to realize the function of detecting the trigger switch, the cost is low, the structure is simple, the wiring is easy, and the service life and the quality are reliable.

The head of the detecting thimble 240 is of an arc-shaped structure, and the latch 232 is correspondingly provided with a groove for accommodating the head of the detecting thimble 240. The arc head is more conveniently inserted into the groove, and better contact can be realized by adopting a groove structure, so that the reliability is improved.

The electronic lock may further include a code reading function, as shown in fig. 4, the electronic lock cylinder 200 further includes a code reading mechanism 250, and the code reading mechanism 250 is electrically connected to the control system for reading the ID code on the unlocking key 100. As shown in fig. 1, the ID code information is stored in an ID code chip 110 inside the key. The control system can control the electromagnetic element locking mechanism to perform corresponding unlocking action according to the unlocking state signal and the read ID code. When the control system receives the unlocking state signal and verifies that the ID code on the unlocking key 100 is wrong, the control system controls the electromagnetic element locking mechanism 220 to perform locking action; when the control system receives the unlock state signal and verifies that the ID code on the unlock key 100 is correct, the control system controls the electromagnetic component locking mechanism 220 to maintain the unlock state. Namely, the tooth profile and the ID code on the unlocking key 100 are both correct, the unlocking key 100 can be used for unlocking directly, and the security is also ensured because of the double verification of the tooth profile and the ID code of the key, and the security problem of technical unlocking is not worried about. And only millisecond-level time difference exists from the moment when the unlocking state signal is received to the moment when the ID code is verified, so that a lawless person does not need to worry about technical unlocking by utilizing the time difference, and meanwhile, the unlocking action is executed after the double verification is passed, so that the energy consumption can be saved, and the electric energy waste caused by frequent control can be avoided.

Specifically, the code reading mechanism 250 includes a first code reading thimble 251 and a second code reading thimble 252, and the unlocking key 100 is provided with a code reading area, specifically, the code reading area is a code reading conductive strip 120 connected with an ID chip code, and the code reading conductive strip 120 is connected with the control system. The first code reading thimble 251 is disposed in the unlocking rotation shaft, and has one end capable of being connected to a code reading area of the inserted unlocking key 100 and the other end connected to one end of the second code reading thimble 252. The first code reading pin 251 can be separated from the second code reading pin 252 when the mechanical key mechanism 230 is unlocked by rotation.

The code reading mechanism 250 further includes an elastic member, preferably a spring, through which the first code reading pin 251 and the second code reading pin 252 extend and retract. The elastic members include a first elastic member 253 and a second elastic member 254. A limiting frame 255 is arranged in the unlocking rotating shaft, a first limiting through hole is formed in the limiting frame 255, the first code reading thimble 251 is connected with the first elastic piece 253 and is arranged in the first limiting through hole, one end of the first code reading thimble 251 extends out of the first limiting through hole, and the other end of the first code reading thimble 251 is limited in the first limiting through hole. A second limiting through hole is formed in the lock cylinder housing 260 corresponding to the first limiting through hole, the first limiting through hole and the second limiting through hole are coaxially communicated, and the second code reading thimble 252 is connected with the second elastic piece 254 and is arranged in the second limiting through hole. The first code reading thimble 251 is connected with one end of the second code reading thimble 252 through a first elastic member 253, and the other end of the second code reading thimble 252 is connected with a second elastic member 254. When the unlocking key 100 is inserted, under the elastic force action of the first elastic piece 253 and the second elastic piece 254, one end of the first code reading thimble 251 is pressed into the first limiting through hole and abuts against the code reading conductive strip 120 of the key, the contact surface between the second code reading thimble 252 and the first elastic piece 253 is just a separation surface of the unlocking rotating shaft 210 and the lock cylinder shell 260, and at this time, the unlocking rotating shaft 210 can be rotated, so that the second code reading thimble 252 is separated from the first elastic piece 253. The ejector pin is arranged in two sections, the structure does not influence the rotation of the unlocking rotating shaft 210, and the effective connection of a code reading signal transmission path can be realized.

The first code reading thimble 251 and the second code reading thimble 252 are respectively isolated or separated from or in insulated contact with the unlocking rotating shaft 210 and the lock cylinder shell, so that the electric signal is correctly conducted, and an effective switching function is realized. The head of the second code-reading thimble 252 is of an arc-shaped structure, so that the unlocking rotary shaft 210 is prevented from being clamped by the second code-reading thimble 252 when rotating, and the unlocking rotary shaft 210 can rotate more smoothly.

An anti-theft door adopts foretell electronic lock.

In one embodiment, a method for controlling an electronic lock includes the steps of:

step 1, detecting whether the unlocking state of the electromagnetic element locking mechanism 220 is changed;

step 2, when the unlocking state of the electromagnetic element locking mechanism 220 is changed, judging whether the unlocking state is changed under the control of the control system;

and 3, when the state is not changed under the control of the control system, the control system sends a control signal to enable the electromagnetic element locking mechanism 220 to return to the unlocking state before the change.

In another embodiment, a control method of an electronic lock, which uses the above electronic lock, includes the following steps:

step 1, a detection mechanism detects the unlocking action of a mechanical secret key mechanism, and when the mechanical secret key mechanism is unlocked, the detection mechanism generates an unlocking signal;

and 2, controlling the electromagnetic element locking mechanism to perform locking action by the control system according to the unlocking signal.

In another embodiment, a method for controlling an electronic lock includes the steps of:

step 1, a detection mechanism detects the unlocking action of a mechanical secret key mechanism, and when the mechanical secret key mechanism is unlocked, the detection mechanism generates an unlocking signal;

step 2, reading the ID code of the unlocking key by a code reading mechanism;

step 3, when the ID code is correct, the control system controls the electromagnetic element locking mechanism to keep an unlocked state; when the ID code is wrong, the control system controls the electromagnetic element locking mechanism to perform locking action.

The specific working process of the electronic lock is as follows:

1. the working process of the detection device is as follows:

when the movable iron core 222 is in the unlocking state (i.e. the movable iron core 222 does not extend into the groove of the electronic lock unlocking rotating shaft 210), the door lock is subjected to an external force, the iron core is switched from the unlocking state to the locking state (i.e. one end of the movable iron core 222 extends into the groove of the electronic lock unlocking rotating shaft 210), the movable iron core 222 leaves the magnet 223, the communication between the infrared sensors 300 is switched on to generate a locking state signal, the control system judges that the position of the movable iron core 222 is changed according to the locking state signal, and the forward current is introduced to the coil of the solenoid 221 to control the movable iron core 222 to return to the original unlocking state.

When the movable iron core 222 is in a locked state (i.e. the movable iron core 222 extends into the groove of the unlocking rotating shaft 210 of the electronic lock), the door lock is subjected to an external force, the iron core is switched from the unlocked state to the unlocked state (i.e. the movable iron core 222 slides out of the groove of the unlocking rotating shaft 210 of the electronic lock), the movable iron core 222 is attracted with the magnet 223, communication between the infrared sensors 300 is interrupted to generate an unlocked state signal, the control system judges that the position of the movable iron core 222 is changed according to the unlocked state signal, and reverse current is introduced to the coil to control the movable iron core 222 to return to the original locked state.

2. The working process of the mechanical key mechanism and the detection mechanism is as follows:

when the solenoid 221 is in the default position, the plunger 222 does not extend into the recess of the electronic lock unlocking spindle 210.

Under the condition that the electronic lock has the electricity or the fingerprint lock has normal functions, if the unlocking key 100 with the correct tooth profile is inserted, the lock plunger 232 retracts into the unlocking rotating shaft 210, the detection thimble 240 is disconnected with the lock plunger 232, so that the electric connection between the thimble 240 and the lock plunger 232 is disconnected, and the control system detects an unlocking state signal generated by the interruption, so that the key is judged to be proper, the control system controls the movable iron core 222 to pop out and extend into the groove of the unlocking rotating shaft 210, so that the unlocking rotating shaft 210 cannot rotate, so that lawless persons can be prevented from technically unlocking under the condition that the lock has the electricity or the fingerprint lock has normal functions, and only the fingerprint or the password can be used for unlocking, so that the safety of the door lock is improved. Under the condition that the electronic system is abnormal, a proper unlocking key 100 is inserted, the lock plunger 232 can also retract into the unlocking rotating shaft 210, the detection thimble 240 is disconnected with the lock plunger 232, but the control circuit cannot normally work and cannot control the movable iron core 222 to bounce, and the unlocking rotating shaft 210 can rotate and unlock, so that the safety standard of the industry is met, and the unlocking can be directly realized by using the key under the condition that the electronic system is abnormal.

If the key is incorrect, either in the presence or absence of power, the lock bolt 232 remains stationary and cannot rotate the unlocking spindle 210 to unlock the lock.

3. The working process of the code reading mechanism comprises the following steps:

under the condition that the electronic lock is electrified or the lock is normal, if a correct unlocking key 100 is inserted, the lock plunger 232 retracts into the unlocking rotating shaft 210, the thimble 240 is detected to be disconnected with the lock plunger 232, so that the electric connection between the thimble 240 and the lock plunger 232 is disconnected, and the control system detects an unlocking state signal generated by the disconnection, the code is read through the code reading mechanism 250. If the read ID code on the unlocking key 100 is correct, the movable iron core 222 remains stationary, and the unlocking key 100 is rotated to unlock the lock; if the read ID code is incorrect, the movable iron core 222 is immediately controlled to bounce and extend into the groove, so that the key cannot rotate to unlock the lock. Therefore, technical unlocking by lawbreakers can be prevented under the condition that the lock has electricity or a fingerprint function is normal, and the safety of the door lock is improved by utilizing double detection of a mechanical key and an ID code. The whole code reading detection process is very fast, only the millisecond time difference exists, and the situation that the movable iron core 222 is unlocked quickly before not acting is not worried about. Meanwhile, the mode of executing the unlocking action after the double verification is passed can save energy consumption and avoid electric energy waste caused by frequent control.

Under the condition of no electricity or other emergency, if the correct unlocking key 100 is inserted, the lock plunger 232 can also retract into the unlocking rotating shaft 210, the detection thimble 240 is disconnected with the lock plunger 232, the control system is not electrified and cannot work, the movable iron core 222 cannot be controlled to bounce, and the unlocking rotating shaft 210 can rotate and unlock, so that the safety specification of the industry is met, and the unlocking can be directly realized by using the key under the condition of no electricity or other emergency.

If the key is incorrect, it indicates that the user is not a legitimate user, and the lock bolt 232 remains stationary and cannot rotate the unlocking spindle 210 to unlock the lock, whether in the presence of power or in the absence of power.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (9)

1. An electronic lock comprises an electronic lock cylinder and a control system, wherein the electronic lock cylinder comprises a lock cylinder shell, an unlocking rotating shaft and an electromagnetic element locking mechanism, the control system is electrically connected with the electromagnetic element locking mechanism and controls the electromagnetic element locking mechanism to perform unlocking action on the unlocking rotating shaft, and the electronic lock cylinder is characterized by further comprising a mechanical key mechanism and a detection mechanism, the detection mechanism is electrically connected with the control system, the detection mechanism is connected with the mechanical key mechanism and is used for detecting the unlocking action of the mechanical key mechanism and generating an unlocking state signal of the mechanical key mechanism, the control system can control the electromagnetic element locking mechanism to perform locking action according to the unlocking state signal, the electronic lock cylinder also comprises a detection device and a control device, the detection device is used for detecting the change of the unlocking state of the electromagnetic element locking mechanism and outputting the unlocking state signal of the electromagnetic element locking mechanism to the control system, when the unlocking state of the electromagnetic element locking mechanism changes, whether the electromagnetic element locking mechanism changes under the control of the control system is judged, and when the electromagnetic element locking mechanism does not change under the control system sends a control signal to enable the electromagnetic element locking mechanism to return to the unlocking state before the change.

2. The electronic lock of claim 1, wherein the mechanical key mechanism comprises a mechanical unlocking member and a lock plunger disposed in the unlocking rotating shaft, and the lock plunger is used for unlocking the unlocking rotating shaft; the detection mechanism comprises a detection thimble, and the detection thimble is separably contacted with the lock bolt; when the unlocking key is inserted into the mechanical unlocking part and is correctly matched with the mechanical unlocking part, the lock plunger can be separated from the detection thimble and generates an unlocking state signal of the mechanical key mechanism.

3. The electronic lock of claim 2, wherein the detecting pin head is a circular arc-shaped structure, and the lock plunger is correspondingly provided with a groove for accommodating the detecting pin head.

4. The electronic lock of claim 2, wherein the electronic lock cylinder further comprises a code reading mechanism electrically connected to the control system for reading an ID code on an unlock key; the control system can control the electromagnetic element locking mechanism to perform corresponding unlocking action according to the unlocking state signal and the read ID code.

5. The electronic lock of claim 4, wherein the code reading mechanism comprises a code reading thimble, and the unlocking key is provided with a code reading area, and the code reading thimble is in contact with the code reading area when the unlocking key is inserted into the mechanical unlocking member.

6. The electronic lock of claim 5, wherein the code reading thimble comprises a first code reading thimble arranged in the unlocking rotating shaft and a second code reading thimble arranged in the lock cylinder shell, one end of the first code reading thimble can be connected with a code reading area on an inserted unlocking key, and the other end of the first code reading thimble abuts against one end of the second code reading thimble; the first code reading thimble can be separated from the second code reading thimble when rotating and unlocking along with the mechanical key mechanism.

7. The electronic lock of claim 6, wherein the second code tip segment is a circular arc shaped structure.

8. A method of controlling an electronic lock using an electronic lock according to any one of claims 1 to 7, the method comprising:

the detection mechanism detects the unlocking action of the mechanical key mechanism, and when the mechanical key mechanism is unlocked, the detection mechanism generates an unlocking signal;

and the control system controls the electromagnetic element locking mechanism to perform locking action according to the unlocking signal.

9. A method of controlling an electronic lock using an electronic lock according to any of claims 1 to 7, the electronic lock further comprising a code reading mechanism connected to a control system, the method comprising:

the detection mechanism detects the unlocking action of the mechanical key mechanism, and when the mechanical key mechanism is unlocked, the detection mechanism generates an unlocking signal;

the code reading mechanism reads the ID code of the unlocking key;

when the ID code is correct, the control system controls the electromagnetic element locking mechanism to keep an unlocked state; when the ID code is wrong, the control system controls the electromagnetic element locking mechanism to carry out locking action.

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