Passive electronic lock core and lock

Abstract

A passive electronic lock core and lock, when not powered on, the solenoid stops working, and the lock pin is located at two limit grooves provided on the side wall of the lock body assembly under the elastic force of the limit spring built into the solenoid, and the limit spring elastic force ensures that the lock pin will not shift; when the electronic drive part is powered, the solenoid acts on the T-shaped magnet, and through the movement of the solenoid, the lock pin is driven to leave the limit position of the two limit grooves of the lock body assembly, and the rotation of the lock core assembly and the lock core sleeve assembly relative to the lock body assembly is driven by the rotation of the electronic key to realize the unlocking and locking operations. The advantage of the present invention is that the solenoid will not have a magnetic effect with the external magnetic field when not powered on, so the external strong magnetic field cannot unlock or lock, thereby improving the safety and reliability of the electronic lock; this passive electronic lock has the characteristics of simple structure, easy installation, waterproof and anti-theft, and low cost of use.

Description

Technical Field

[0001] The present invention relates to the technical field of locks, and in particular to a passive electronic lock core and a lock. Background Art

[0002] Locks are an indispensable anti-theft tool in daily life management in all walks of life. They are widely used in civil, railway, electric power, public security, telecommunications, tap water industry, etc. In civil use, they can prevent thieves from breaking into houses. In industry applications, they can protect key items from being stolen and facilitate unified management in the background. There are many types of locks on the market, including traditional mechanical locks and emerging electronic locks. Different types of locks have different structures and functions.

[0003] The current electronic locks are generally composed of two parts: the electronic drive part and the mechanical drive part. The core is to drive the lock pin away from the limit position through the electronic drive part, and then realize the unlocking and locking operations through the mechanical drive part. The electronic drive part is the core of the entire passive electronic lock. There are currently two ways to implement it, namely the motor drive method and the electromagnetic solenoid drive method:

[0004] 1. Motor drive mode: The structure is complex and the cost is high, and it is difficult to achieve waterproofing. Water ingress to the motor can easily cause the motor to be damaged and the switch lock cannot be operated;

[0005] Second, the electromagnetic solenoid drive method has a simple structure, simple waterproof treatment, and low cost. At present, the mainstream electromagnetic drive method is fixed electromagnetic solenoid. The solenoid has two permanent magnets built in. The principle of repulsion between the same polarity of permanent magnets is used. One of the permanent magnets is fixed, and the relative displacement of the other permanent magnet is used to control the switch of the lock, that is, the electromagnet is used as a lock pin; this method is easily interfered by the strong magnetic field from the outside. Without inserting the electronic key, the lock can be easily opened maliciously, thus posing a hidden danger to safety and reducing the safety and reliability of the electronic lock; at the same time, the passive electronic locks on the market currently do not have the function of unlocking and locking records. After the passive electronic lock is turned on and off, the system cannot confirm the last open and close state of the lock, which brings great trouble to system management; Summary of the invention

[0006] The present invention adopts electromagnetic solenoid drive mode, and solves the technical problem of preventing the electronic lock from being accidentally unlocked due to strong external magnetic field or other external unpredictable factors when no electronic key is inserted. The state of the lock core is sensed and recorded by the Hall cylindrical permanent magnet and the Hall magnetic induction unit.

[0007] In order to achieve the above purpose, the technical solution adopted by the present invention is:

[0008] A passive electronic lock core, characterized in that: a T-shaped magnet, a solenoid and a lock pin are arranged inside the lock core plastic part; the T-shaped magnet is positioned and connected to the lock core plastic part; the lock pin is installed and connected to the solenoid; when the power is on, the solenoid magnetic field and the T-shaped magnet generate a force, the solenoid drives the lock pin to move, and the limit between the lock pin and the lock body is released.

[0009] One end of the T-shaped magnet is positioned and connected to the lock core plastic part, and the other end is inserted into the solenoid; one end of the lock pin passes through the lock core plastic part, and the other end is installed and connected to the solenoid; inside the solenoid, a limit spring is provided between the insertion end of the T-shaped magnet and the lock pin; when the solenoid is energized, the solenoid drives the lock pin to retract into the lock core sleeve.

[0010] The solenoid is wound with an energized coil and is made of non-magnetic material.

[0011] The lock core plastic part is provided with a Hall magnetic induction unit which rotates synchronously with the lock core.

[0012] The lock core plastic part is covered with a lock core sleeve, and a positioning hole is provided at a position where the outer wall of the lock core sleeve and the lock core plastic part are relative to each other.

[0013] A lock communication board is arranged inside the lock core plastic part.

[0014] A lock mainboard is arranged inside the lock core plastic part, and the lock switch operation is recorded through the lock mainboard.

[0015] A lock including a passive electronic lock core, the lock including a lock body, wherein the lock body is provided with a lock body limiting groove I and a lock body limiting groove II; in a locked state, a lock pin extends from a lock core plastic part and a lock core sleeve positioning hole and is inserted into the lock body limiting groove I; in an unlocked state, the lock pin is retracted into the lock core sleeve and the lock core is rotated; in an unlocked state, the lock pin extends from a lock core plastic part and a lock core sleeve positioning hole and is inserted into the lock body limiting groove II.

[0016] A Hall cylindrical permanent magnet is fixed inside the lock body, and the Hall cylindrical permanent magnet and the Hall magnetic induction unit arranged in the lock core are mutually inductive.

[0017] A positioning pin is arranged inside the lock body, one end of which is limited at the hexagonal tip fastening screw of the lock body, and the other end is inserted into the positioning pin limiting groove of the connecting part of the lock core sleeve to position and connect the lock body and the lock core sleeve.

[0018] The beneficial effects of the present invention are:

[0019] The present invention adopts the movement of the solenoid to drive the lock pin to leave the limit position to realize the function of unlocking and locking, rather than fixing the solenoid and moving the permanent magnet, which can effectively prevent external intentional unlocking; at the same time, through the position of the Hall sensing unit of the lock core assembly relative to the Hall cylindrical permanent magnet fixed in the lock body assembly, the open and closed position of the lock is monitored and the lock opening and closing records are generated. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is an overall cross-sectional view of the present invention;

[0021] Figure 2 for Figure 1 One of the structural diagrams when the lock is in the closed state;

[0022] Figure 3 for Figure 1 One of the structural diagrams when the lock is in the open state;

[0023] Figure 4 for Figure 1 Schematic diagram of the connector position structure when the lock is closed;

[0024] Figure 5 for Figure 1 Schematic diagram of the connector position structure when the lock is open;

[0025] Figure 6 for Figure 1 Schematic diagram of the Hall magnetic sensing unit position structure when the lock is closed;

[0026] Figure 7 Bit Figure 1 Schematic diagram of the Hall magnetic sensing unit position structure when the lock is open;

[0027] Figure 8 A three-dimensional view of the lock core of the present invention after installation;

[0028] Fig. 9 It is a schematic diagram of the exploded view of the lock core of the present invention. DETAILED DESCRIPTION

[0029] A passive electronic lock core comprises an electronic part and a mechanical part.

[0030] The lock core sleeve 20 is sleeved with a lock core plastic part 40, and the lock core plastic part 40 is provided with a solenoid 41, a limit spring 42, a lock pin 43, a T-shaped magnet 44, a Hall magnetic induction unit 46, a positive power supply contact spring pin 47, a lock communication board 48, a lock main board 49, a lock connection board 50, and a negative power supply spring pin 51.

[0031] Positioning holes for the lock pin 43 to extend are provided at corresponding positions of the lock core sleeve 20 and the lock core plastic part 40. One end of the T-shaped magnet 44 is positioned and connected with the lock core plastic part 40, and the other end is inserted into the solenoid 41; one end of the lock pin 43 passes through the lock core sleeve 20 and the lock core plastic part 40 through the positioning hole, and the other end is installed and connected with the solenoid 41; inside the solenoid 41, a limit spring 42 is provided between the insertion end of the T-shaped magnet 44 and the lock pin 43. The solenoid 41 is wound with an energized coil, and the solenoid 41 is made of non-magnetic material.

[0032] When the electronic drive part is not powered, the lock pin 43 extends through the positioning hole. At this time, the lock core cannot rotate in the lock and is in a locked position, and cannot be unlocked. When the electronic drive part is powered, the solenoid 41 is powered to generate a magnetic field. At this time, the magnetic field of the solenoid 41 interacts with the T-shaped magnet 44, so that the solenoid 41 is subjected to force and moves toward the T-shaped magnet 44. The solenoid 41 drives the lock pin 43 to compress the limit spring 42, so that the lock pin 43 retracts from the positioning hole into the lock core sleeve 20. At this time, the position between the lock core and the lock body 1 is unlocked, and the lock core can rotate in the lock body 1.

[0033] The Hall magnetic induction unit 46 is arranged in the lock core and rotates synchronously with the lock core. The Hall magnetic induction unit 46 cooperates with the Hall cylindrical permanent magnet 5 on the lock body 1 to sense that the lock core is in an open / locked state.

[0034] The positive power contact spring pin 47 is embedded in the lock core plastic part 40. One end of the contact point of the positive power contact spring pin 47 is exposed from the head of the lock core plastic part 40, and the other end of the spring pin part is in contact with the lock communication board 48. When the lock is turned on and off, the electronic key supplies power to the lock.

[0035] The lock communication board 48 is arranged at the communication board fixing groove inside the lock core plastic part 40 and contacts the positive contact spring pin 47 of the power supply. The lock communication board 48 has a wireless communication unit for communicating between the passive electronic lock and the electronic key.

[0036] The lock main board 49 is arranged at the main board fixing groove inside the lock core plastic part 40. The main board has a processor and a control circuit for realizing the operation of unlocking and locking.

[0037] The lock connection plate 50 connects the lock communication plate 48 and the lock main plate 49 together. There are two negative power supply spring pins 51 on the lock connection plate 50, which are used as the negative pole of the power supply when the lock communicates with the key; and there is a Hall magnetic induction unit 46 on the lock connection plate 50, which cooperates with the Hall cylindrical permanent magnet 5 on the lock body 1 to sense that the lock core is in an open / locked state;

[0038] A lock including a passive electronic lock core, the lock including a lock body 1, a lock beam 2, a limit ball 3, a lock beam spring 4, a Hall cylindrical permanent magnet 5, a positioning pin 6, a hexagon socket tip set screw 7, a connector 21, and a cross pan head screw 22.

[0039] A lock body limiting groove I8 and a lock body limiting groove II9 are provided in the lock body 1; in the locked state, the lock pin 43 extends from the lock core plastic part 40 and the lock core sleeve 20 positioning hole, and is inserted into the lock body limiting groove I8; in the unlocked state, the lock pin 43 retracts into the lock core sleeve 20, and the lock core can be rotated at this time; in the unlocked state, the lock pin 43 extends from the lock core plastic part 40 and the lock core sleeve 20 positioning hole, and is inserted into the lock body limiting groove II9.

[0040] A Hall cylindrical permanent magnet 5 is fixed inside the lock body 1; when in the locked state, the Hall magnetic induction unit 46 is away from the Hall cylindrical permanent magnet 5; when in the unlocked state, the Hall magnetic induction unit 46 is close to the Hall cylindrical permanent magnet 5, and the lock main board 49 records the opening and closing state of the lock body and uploads the recorded information through the lock communication board 48.

[0041] The connecting piece 21 is fixed to the lock core sleeve 20 by a cross pan head screw 22. The connecting piece 21 rotates synchronously with the lock core. The outer ring of the connecting piece 21 is provided with an arc-shaped positioning pin limiting groove 23. The degree of the arc-shaped positioning pin limiting groove 23 is the same as the rotation degree of the lock core. One end of the positioning pin 6 is limited to the hexagonal tip set screw 7 of the lock body 1, and the other end is inserted into the positioning pin limiting groove 23 to position and connect the lock body assembly with the lock core sleeve 20.

[0042] The locking beam 2 is installed in the lock body 1, fixing and compressing the locking beam spring 4; when unlocking, the limiting ball 3 enters the platforms on both sides of the connecting piece 21, and the locking beam spring 4 pops out the locking beam 2. The limiting ball 3 is installed in the lock body 1, used to limit the locking beam 2; when unlocking, the limiting ball 3 enters the platforms on both sides of the connecting piece 21, the limiting ball 3 is canceled, and the lock is unlocked. The locking beam spring 4 is installed in the lock body 1; when unlocking, the locking beam 2 pops out. The hexagon socket tip set screw 7 is installed in the lock body 1, used to fix the positioning pin 6.

[0043] When used specifically:

[0044] When unlocking, the key is inserted into the lock core, and the positive pin of the key power source contacts the positive pin 47 of the lock core assembly power source. At this time, the solenoid 41 is powered and acts on the T-shaped magnet 44, and the solenoid 41 drives the lock pin 43 to compress the limit spring 42. At this time, the position of the Hall cylindrical permanent magnet 5 of the lock body assembly and the Hall sensing unit 46 of the lock core assembly is as shown in FIG. Figure 6 At this time, the position of the lock body assembly locating pin 6 and the connecting member 21 of the lock cylinder sleeve assembly is as shown Figure 4As shown; at this time, the key is turned to drive the lock core sleeve assembly to rotate together with the lock core assembly, so that the lock pin 43 leaves the lock body limiting groove I8. Under the limitation of the lock body assembly positioning pin 6, the lock core sleeve assembly rotates in the positioning pin limiting groove 23 of the connecting member 21; when the Hall cylindrical permanent magnet 5 of the lock body assembly and the Hall sensing unit 46 of the lock core assembly are as shown Figure 7 When the solenoid 41 is in the position shown, the solenoid 41 is powered off, and under the action of the limit spring 42, the lock pin 43 is driven by the solenoid 41 to enter the lock body limit groove II9. At this time, the position of the lock body assembly locating pin 6 and the connection piece 21 of the lock core sleeve assembly is as shown in FIG. Figure 5 As shown; the lock is now open;

[0045] When the lock is closed, the key is inserted into the lock core, and the positive electrode spring pin of the key power source contacts the positive electrode spring pin 47 of the lock core assembly power source. At this time, the solenoid 41 is powered and acts on the T-shaped magnet 44, and the solenoid 41 drives the lock pin 43 to compress the limit spring 42. Figure 3 As shown, at this time, the positions of the Hall cylindrical permanent magnet 5 of the lock body assembly and the Hall sensing unit 46 of the lock core assembly are as shown in FIG. Figure 7 At this time, the position of the lock body assembly locating pin 6 and the connecting member 21 of the lock cylinder sleeve assembly is as shown Figure 5 As shown; at this time, turn the key to drive the lock core sleeve assembly to rotate together with the lock core assembly, so that the lock pin 43 leaves the lock body limiting groove II9. Under the limitation of the lock body assembly positioning pin 6, the lock core sleeve assembly rotates in the positioning pin limiting groove 23 of the connecting member 21; when the Hall cylindrical permanent magnet 5 of the lock body assembly and the Hall sensing unit 46 of the lock core assembly are as shown Figure 6 When the solenoid 41 is in the position shown, the solenoid 41 is de-energized, and under the action of the limit spring 42, the lock pin 43 is driven by the solenoid 41 to enter the lock body limit groove 18. At this time, the position of the lock body assembly locating pin 6 and the connection piece 21 of the lock core sleeve assembly is as shown in FIG. Figure 4 As shown; the lock is now closed.

Claims

1. A passive electronic lock cylinder, characterized in that: A T-shaped magnet (44), a solenoid (41) and a lock pin (43) are provided inside the lock core plastic part (40); the T-shaped magnet (44) is connected to the lock core plastic part (40) in a fixed position; the lock pin (43) is connected to the solenoid (41) in an installed manner; when the power is on, the magnetic field of the solenoid (41) and the T-shaped magnet (44) generate a force, the solenoid (41) drives the lock pin (43) to move, and the limit between the lock pin (43) and the lock body (1) is released; one end of the T-shaped magnet (44) is connected to the lock core plastic part (40) in a fixed position, and the other end is inserted into the solenoid (41) to lock the lock pin (43). The lock pin (43) is inserted into the wire tube (41); one end of the lock pin (43) passes through the lock core plastic part (40), and the other end is installed and connected to the solenoid (41); inside the solenoid (41), a limit spring (42) is provided between the insertion end of the T-shaped magnet (44) and the lock pin (43); when the solenoid (41) is energized, the solenoid (41) drives the lock pin (43) to retract into the lock core sleeve (20); the lock core plastic part (40) is covered with the lock core sleeve (20), and a positioning hole is provided at a relative position between the outer wall of the lock core sleeve (20) and the lock core plastic part (40).

2. A passive electronic lock cylinder according to claim 1, characterized in that: The solenoid (41) is wound with an energized coil, and the solenoid (41) is made of non-magnetic material.

3. The passive electronic lock cylinder according to claim 1, characterized in that: The lock core plastic part (40) is provided with a Hall magnetic induction unit (46) which rotates synchronously with the lock core.

4. The passive electronic lock cylinder according to claim 1, characterized in that: A lock communication board (48) is provided inside the lock core plastic part (40).

5. The passive electronic lock cylinder according to claim 1, characterized in that: A lock mainboard (49) is provided inside the lock core plastic part (40), and the lock switch operation is recorded via the lock mainboard (49).

6. A lock, characterized in that: The passive electronic lock core comprises a lock body (1), wherein the lock body (1) is provided with a lock body limiting groove I (8) and a lock body limiting groove II (9); in a locked state, a lock pin (43) extends from a lock core plastic part (40) and a lock core sleeve (20) at a positioning hole and is inserted into the lock body limiting groove I (8); in an unlocked state, the lock pin (43) is retracted into the lock core sleeve (20) and the lock core is rotated; in an unlocked state, the lock pin (43) extends from a lock core plastic part (40) and a lock core sleeve (20) at a positioning hole and is inserted into the lock body limiting groove II (9).

7. The lock according to claim 6, characterized in that: A Hall cylindrical permanent magnet (5) is fixed inside the lock body (1), and the Hall cylindrical permanent magnet (5) and a Hall magnetic induction unit (46) arranged in the lock core are mutually inductive.

8. The lock according to claim 6, characterized in that: A positioning pin (6) is provided inside the lock body (1), one end of the positioning pin (6) is limited at the hexagon socket tip fastening screw (7) of the lock body (1), and the other end is inserted into the positioning pin limiting groove (23) of the connecting piece (21) of the lock core sleeve (20), so as to position and connect the lock body (1) and the lock core sleeve (20).

Images