Active anti-theft electromagnetic lock with actuating structure and signal feedback

Abstract

The invention discloses an active anti-theft electromagnetic lock with an actuating structure and signal feedback. It includes a lock housing assembly, an electromagnetic transmission assembly, a lock body transmission assembly and a lock seat assembly; the electromagnetic transmission assembly is installed on the lock body transmission assembly by screws; the lock housing assembly and the lock body transmission assembly are both installed on the lock seat assembly; the electromagnetic transmission assembly and the lock body transmission assembly are both located between the lock housing assembly and the lock seat assembly; the electromagnetic transmission assembly includes a magnet box assembly, a cylindrical spiral spring, an armature, a coil support frame assembly, a micro switch I, a cable assembly, an actuating rod assembly, a coil assembly and a copper sleeve; the cable assembly is welded to the micro switch I and the coil assembly; the cable assembly is welded to the micro switch II and the micro switch III; the locking transmission rod assembly, the lock buckle and the lock tongue transmission assembly are arranged in sequence from top to bottom. The invention has the advantages of being able to directly feedback the position of the actuating structure to determine whether the electromagnetic lock is unlocked or locked; and being able to feedback whether the lock tongue extends into the lock buckle.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical electromagnetic locks, and more specifically to an active anti-theft electromagnetic lock with an actuating structure and signal feedback. Background Art

[0002] At present, most of the existing electromagnetic lock structures are electromagnetic door locks (installed on the door), and electromagnetic lock buckles (installed inside the door frame) are rarely used. Due to the different installation positions of electromagnetic door locks and electromagnetic lock buckles, the actuation structures are also very different. Electromagnetic door locks focus on the actuation of the lock tongue, while electromagnetic lock buckles focus on the actuation of the lock buckle. In addition, the existing electromagnetic locks have less monitoring of the actuation structure, and cannot quickly determine whether the electromagnetic lock is unlocked, locked, or faulty, which cannot meet the application requirements of higher security occasions.

[0003] The Chinese patent (Announcement No.: CN 109653603 B, Announcement Date: 2020.07.14) authorizes a dual redundant hot backup actuator electromagnetic lock unlocking detection circuit, which includes a DSP controller, an actuator electromagnetic lock, an unlocking and monitoring circuit including two control circuits, two locking and unlocking circuits, two voltage monitoring circuits, and two current monitoring circuits. The monitoring circuit can realize the unlocking and locking status check and circuit health status assessment, and transmit it to the remote master control station.

[0004] The above method has the following shortcomings:

[0005] ① Whether the electromagnetic lock is unlocked or locked is determined only by whether the feedback voltage or current is within the set threshold range. When the control circuit is disturbed or fails, misjudgment is likely to occur;

[0006] ② There is no feasible mechanical structure, and it is impossible to determine whether the mechanical structure for unlocking or locking has been fully actuated;

[0007] ③ It is impossible to determine whether the lock tongue is inserted into the lock buckle, posing a safety hazard.

[0008] Therefore, it is necessary to develop an electromagnetic lock that can directly feedback the position of the actuating structure to determine whether the electromagnetic lock is unlocked or locked, and can feedback whether the coil assembly is normal and whether the lock tongue is extended into the lock buckle. Summary of the invention

[0009] The purpose of the present invention is to provide an active anti-theft electromagnetic lock with an actuating structure with signal feedback, which can directly feedback the position of the actuating structure to determine whether the electromagnetic lock is unlocked or locked, without indirectly feedback whether the electromagnetic lock is unlocked or locked through setting a threshold value through a circuit; it can also feedback whether the coil assembly is normal and whether the lock tongue extends into the lock.

[0010] In order to achieve the above-mentioned purpose, the technical solution of the present invention is: an active anti-theft electromagnetic lock with an actuating structure and signal feedback, characterized in that it includes a lock housing assembly, an electromagnetic transmission assembly, a lock body transmission assembly and a lock seat assembly;

[0011] The electromagnetic transmission assembly is mounted on the lock body transmission assembly by means of screws;

[0012] The lock housing assembly and the lock body transmission assembly are both installed on the lock seat assembly;

[0013] The electromagnetic transmission assembly and the lock body transmission assembly are both located between the lock housing assembly and the lock seat assembly;

[0014] The electromagnetic transmission assembly includes a magnet box assembly, a cylindrical helical spring, an armature, a coil support frame assembly, a micro switch I, a cable assembly, an actuating rod assembly, a coil assembly and a copper sleeve; the magnet box assembly, the cylindrical helical spring, the armature, the micro switch I, the cable assembly, the actuating rod assembly, the coil assembly and the copper sleeve are all installed on the coil support frame assembly; the cable assembly is welded and connected with the micro switch I and the coil assembly; a closed magnetic circuit can be formed when the coil assembly is energized; when the coil assembly is energized, the magnet box assembly moves with the electromagnetic attraction of the armature to touch the micro switch I; when the coil assembly is de-energized, the magnet box assembly is separated from the contact with the micro switch I under the action of the elastic force of the cylindrical helical spring; when the coil assembly is in a de-energized state, the locking assembly touches the micro switch II; when the coil assembly is energized, the locking assembly is separated from the contact with the micro switch II under the action of the torsion spring II;

[0015] The lock body transmission assembly includes a torsion spring II, a locking assembly, a safety block assembly, a torsion spring I, a micro switch III, a fixing frame assembly and a micro switch II; the locking assembly, the safety block assembly, the micro switch II and the micro switch III are installed on the fixing frame assembly; the cable assembly is welded to the micro switch II and the micro switch III; the locking assembly can turn on or off the micro switch II when it moves (the micro switch is turned on or off as feedback signals); when the locking assembly moves to the bottom of the locking transmission rod assembly, the electromagnetic lock buckle described in the present invention is locked; when the locking assembly is under the locking transmission rod assembly and supports the locking transmission rod assembly, the supported locking transmission rod assembly restricts the movement of the lock buckle, and the electromagnetic lock buckle is locked; when the locking assembly is out of the locking transmission rod assembly, the restriction of the locking transmission rod assembly is released, and it can rotate around its own axis. When the locking transmission rod assembly can move, the lock buckle can also move, and the electromagnetic lock buckle is unlocked (such as Figure 6 , Figure 7 , Figure 8 shown).

[0016] When the electromagnetic transmission assembly is powered on, the armature can be attracted. When the attraction movement is completed, the magnet box assembly can support the micro switch I installed on the coil support frame assembly; the actuator rod assembly can be linked with the safety block assembly; the locking assembly can be linked with the locking assembly (such as Figure 6-Figure 12 As shown, the actuating rod assembly and the safety block assembly form a linkage structure, the safety block assembly hooks the actuating rod assembly, and the actuating rod assembly moves linearly with the armature under the magnetic force of the coil assembly, driving the safety block assembly to rotate around its own axis, pulling or releasing the locking assembly, and completing the linkage action of the actuating rod assembly and the safety block assembly); the safety block assembly can rotate around the axis and can return to its original position under the action of torsion spring I; the locking assembly can rotate around the axis and can return to its original position under the action of torsion spring II, and trigger micro switch II; as shown Figure 8 As shown, when the electromagnetic lock of the present invention is powered off, the armature returns to its original position under the action of the spiral cylindrical spring, and the actuating rod assembly installed on the armature pulls back the safety block assembly, and the safety block assembly pulls (pull back) the locking assembly to complete the unlocking action. When the electromagnetic lock of the present invention is powered on, the armature moves toward the side of the safety block assembly under the action of the magnetic force, causing the safety block assembly to rotate around its own axis, loosening the locking assembly, and the unlocking assembly rotates and moves to the bottom of the locking transmission rod assembly under the action of the torsion spring II to complete the locking action.

[0017] The lock seat assembly includes a locking transmission rod assembly, a torsion spring IV, a lock catch, a torsion spring III, a lock tongue transmission assembly, a torsion spring V, a lock seat and a lock catch rod; the locking transmission rod assembly, the torsion spring IV, the lock catch, the torsion spring III, the lock tongue transmission assembly, the torsion spring V and the lock catch rod are all installed on the lock seat; the locking transmission rod assembly, the lock catch and the lock tongue transmission assembly are arranged in sequence from top to bottom; when the lock tongue transmission assembly moves, the transmission block is driven, and the transmission block moves linearly and touches the micro switch III.

[0018] In the above technical solution, the micro switch I is mounted on the upper end of the coil support frame assembly by means of screws;

[0019] The coil assembly is inserted into the copper sleeve and installed in the coil support frame assembly;

[0020] The cylindrical helical spring is mounted on an armature, and the armature is mounted in a coil support frame assembly;

[0021] The magnet box assembly and the actuator rod assembly are respectively installed on both sides of the coil support frame assembly; the armature is installed on the inner surface of the coil support frame assembly (the axis of the armature and the coil support frame assembly).

[0022] A magnet box assembly is installed at one end of the armature and an actuator rod assembly is installed at the other end; the magnet box assembly is installed at one end of the armature through screws; the actuator rod assembly is installed at the other end of the armature; the magnet box assembly and the actuator rod assembly are both installed on the outer side of the coil support frame assembly.

[0023] In the above technical solution, micro switch III and micro switch II are respectively installed on both sides of the fixing frame assembly; the locking assembly is hingedly installed on the fixing frame assembly; the torsion spring II is installed on the locking assembly and is located between the locking assembly and the fixing frame assembly;

[0024] The safety block assembly is hingedly mounted on the fixing frame assembly and is located above the locking assembly side; the torsion spring I is mounted on the safety block assembly and is located between the safety block assembly and the fixing frame assembly.

[0025] In the above technical solution, the lock body transmission assembly further includes a transmission block, which is mounted on the fixing frame assembly and movably connected to the fixing frame assembly;

[0026] The transmission block is located below the micro switch III (such as Figure 4 shown).

[0027] In the above technical solution, a first V-shaped surface is provided on the transmission block;

[0028] A second V-shaped surface is provided on the lock tongue transmission assembly;

[0029] The first V-shaped surface matches the second V-shaped surface and is arranged in parallel; when the door is closed, the lock tongue on the door is inserted into the lock buckle, holding the lock tongue transmission assembly and causing the lock tongue transmission assembly to rotate. The second V-shaped surface of the lock tongue transmission assembly actuates the first V-shaped surface of the transmission block, causing the transmission block to move linearly along the fixed frame assembly until it touches the micro switch III;

[0030] When the door is opened, the lock tongue on the door leaves the lock buckle and disengages from the lock tongue transmission assembly, and the lock tongue transmission assembly rotates back to its original position. The second V-shaped surface of the lock tongue transmission assembly returns to a state parallel to the first V-shaped surface of the transmission block. The transmission block is pushed open linearly under the thrust of the contact on the micro switch III, and no longer triggers the micro switch III (such as Figure 4 , Figure 5 shown).

[0031] In the above technical solution, the lock catch is hingedly mounted on the lock seat through the lock catch rod and is located below the locking transmission rod assembly; the torsion spring III is mounted on the lock catch and is located between the lock catch and the lock seat, and the lock catch can rotate around the lock catch rod and can return to its original position under the action of the torsion spring III;

[0032] The locking transmission rod assembly is hingedly mounted on the lock seat; the torsion spring IV is mounted on the locking transmission rod assembly and is located between the locking transmission rod assembly and the lock seat; the locking transmission rod assembly can rotate around the axis and return to its original position under the action of the torsion spring IV. The locking transmission rod assembly can limit and release the rotation function of the lock by rotating around the axis and returning to its original position;

[0033] The lock tongue transmission assembly is hingedly mounted on the lock seat and is located below the lock buckle side. The torsion spring V is mounted on the lock tongue transmission assembly and is located between the lock tongue transmission assembly and the lock seat. When the lock tongue on the door presses against or loosens the lock tongue transmission assembly, the lock tongue transmission assembly will rotate; the torsion spring V can restore the lock tongue transmission assembly to its original position.

[0034] In the above technical solution, the lock housing assembly is a sheet metal part, which is installed on the lock seat by screws, and can fix the cable assembly and protect the internal structure of the active anti-theft electromagnetic lock with signal feedback of the actuating structure of the present invention.

[0035] In the above technical solution, the locking transmission rod assembly and the locking rod are both installed on the lock seat through a shaft retaining ring, which limits the locking transmission rod assembly and the locking rod from escaping in the axial direction of the mounting hole of the lock seat.

[0036] One end of the cylindrical coil spring abuts against the magnet box assembly, and the other end abuts against the coil support frame assembly. When the coil assembly is energized, the armature is attracted to drive the magnet box assembly installed on the armature to move toward the coil support frame assembly to play a restoring role.

[0037] In the above technical scheme, a permanent magnet is installed in the magnet box assembly; a high level is passed to the coil assembly to generate a relatively strong magnetic force, so that the armature moves instantly to the side of the locking assembly 15 under the action of the magnetic force; after the movement is completed, the high level cannot be passed for a long time (the coil assembly will heat up seriously if the high level is energized for about 10 seconds, and the coil assembly may be burned); when working for a long time, the coil assembly is powered by a low level (the coil assembly is powered by a low level, and the coil assembly does not heat up), but the magnetic force generated by the coil assembly being powered by a low level is small, and the cylindrical coil spring cannot restore the armature and the actuator rod assembly installed thereon and other components to their original positions. Therefore, the permanent magnet installed in the magnet box assembly is used to supplement the magnetic force (the permanent magnet in the present invention has the function of increasing the magnetic force), so that the armature and the actuator rod assembly installed thereon maintain the attracted position under long-term low-level conditions.

[0038] The actuating rod assembly, locking assembly, safety block assembly and fixing frame assembly are made of weak magnetic or non-magnetic materials to avoid the problem of electromagnetic lock transmission being disturbed due to magnetization of the actuating rod assembly, locking assembly, safety block assembly and fixing frame assembly after the permanent magnet and coil assembly are energized.

[0039] The coil support frame assembly is made of magnetic conductive material, so that the coil support frame assembly is magnetized after the coil assembly is energized; the magnetized coil support frame assembly is attracted to the moving armature and the permanent magnet installed on the armature, thereby enhancing the suction force and the firmness after attraction.

[0040] The applicant has conducted tests such as vibration test, impact drop test, and 50kg pendulum impact door body (impact force will be transmitted to the electromagnetic lock) according to relevant standards of electromagnetic locks on the present invention, which are used to verify the suction force of the coil assembly and the coil support frame assembly, the armature and the permanent magnet, as well as the firmness after attraction under low-level conditions. The present invention has passed the vibration test, impact drop test, and 50kg pendulum impact door body (impact force will be transmitted to the electromagnetic lock) according to relevant standards of electromagnetic locks. The above tests prove that the suction force and firmness after attraction are reliable by using low-level power to supply power to the coil assembly for a long time and supplementing it with the magnetic force of the permanent magnet at the same time.

[0041] The positive effects of the present invention are as follows:

[0042] (1) The feedback signal of the present invention is generated when the mechanical actuation structure actually moves to the corresponding position, and the feedback signal result is more reliable; the electromagnetic transmission component is provided with a micro switch I, which can feed back the actuation state of the electromagnetic transmission component to the control system, and the control system can recognize that the electromagnetic transmission component is working normally; the micro switch II can feed back the actuation state of the locking component to the control system, and the control system can recognize that the electromagnetic lock has been locked; the micro switch III on the lock body transmission component can feed back the actuation state of the lock tongue transmission component to the control system, and the control system can recognize that the door has been opened;

[0043] (2) The present invention can provide feedback on whether the lock tongue on the door is inserted into the lock catch, thereby improving safety;

[0044] (3) When the present invention is abnormally unlocked or locked, the micro switch I, the micro switch II and the micro switch III are turned on and off in a non-preset logic manner, and the control system can identify and issue an alarm, thereby playing an active anti-theft role.

[0045] The invention discloses an electromagnetic lock with an active anti-theft structure, wherein the active anti-theft function is realized by feedback of a micro switch signal.

[0046] When the monitoring system (the prior art) detects an abnormal signal from the micro switch, an alarm is activated;

[0047] When the electromagnetic lock is in standby mode (i.e. locked for a long time, the monitoring system recognizes the status of three micro switches, and the on and off states of the three micro switches are fixed), when entry is made without a normal request (violent means), the signal of the micro switch will be affected. For example, if the door is opened without a normal request, the on and off signal of the micro switch III will be recognized by the monitoring system, and a corresponding warning (such as an abnormal signal) will be issued; if the electromagnetic lock fails to lock due to violence, the on and off signal of the micro switch II will be recognized by the monitoring system, and a corresponding warning will be issued. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 It is a component structure diagram of the present invention.

[0049] Figure 2 It is a structural diagram of the electromagnetic transmission component of the present invention.

[0050] Figure 3 The side structure of the lock body transmission assembly of the present invention Figure 1 .

[0051] Figure 4 The side structure of the lock body transmission assembly of the present invention Figure 2 .

[0052] Figure 5 It is a structural diagram of the lock seat assembly of the present invention.

[0053] Figure 6 It is a structural diagram of the locking working steps of the present invention.

[0054] Figure 7 It is a structural diagram of the unlocking working steps of the present invention.

[0055] Figure 8 This is a schematic diagram of the unlocking structure of the electromagnetic lock of the present invention.

[0056] Fig. 9 for Figure 8 Zoom in on A Figure 1 .

[0057] Fig.10 for Figure 8 Zoom in on A Figure 2 .

[0058] Fig.11 It is a structural schematic diagram of the safety block assembly in the present invention.

[0059] Fig.12 It is a structural schematic diagram of the actuating rod assembly in the present invention.

[0060] Fig.13 It is a schematic diagram of the top structure of the present invention.

[0061] Fig.14 for Fig.13 AA section view.

[0062] Fig.15 It is the locking logic flow chart of the present invention.

[0063] Fig.16 It is the unlocking logic flow chart of the present invention.

[0064] Figure 8 In the figure, E represents the rotation direction of the locking assembly, and the locking assembly can rotate along the arrow of E; F represents the rotation direction of the locking transmission rod assembly, and the locking transmission rod assembly can rotate along the arrow of F.

[0065] Fig. 9 A in the figure represents the rotation axis of the safety block assembly, and the safety block assembly rotates around the axis of rotation axis A.

[0066] In the figure, 1-lock housing assembly, 2-electromagnetic transmission assembly, 3-lock body transmission assembly, 4-lock seat assembly, 5-magnet box assembly, 6-cylindrical spiral spring, 7-armature, 8-coil support frame assembly, 9-micro switch I, 10-cable assembly, 11-actuating rod assembly, 12-coil assembly, 12.1-main coil assembly, 12.2-spare coil assembly, 13-copper sleeve, 14-torsion spring II, 15-locking assembly, 16-safety block assembly, 17-torsion spring Ⅰ, 18-micro switch III, 19-fixing frame assembly, 20-micro switch II, 21-locking transmission rod assembly, 22-torsion spring IV, 23-locking buckle, 24-torsion spring III, 25-lock tongue transmission assembly, 25.1-second V-shaped surface, 26-torsion spring V, 27-lock seat, 28-locking buckle rod, 29-transmission block, 29.1-first V-shaped surface, 101-screw, 102-shaft retaining ring I, 103-shaft retaining ring II, 104-shaft retaining ring III. DETAILED DESCRIPTION

[0067] The following is a detailed description of the implementation of the present invention in conjunction with the accompanying drawings, but they do not constitute a limitation of the present invention and are only given as examples. At the same time, the advantages of the present invention are made clearer and easier to understand through the description.

[0068] The present invention generates an on-off signal through a micro switch to give unlocking and locking signals, can feedback whether the lock tongue is inserted into the lock buckle, and may also judge whether the electromagnetic lock buckle coil assembly is functioning normally. It is an electromagnetic lock buckle that integrates three signal feedback functions. The present invention is a structural form of an electromagnetic lock buckle installed on a door column. The present invention locks and unlocks by rotating the lock buckle. And the mechanical actuating structure in the present invention actually moves to the corresponding position to trigger the micro switch to give unlocking and locking signals, which can directly feedback the position of the actuating structure to judge whether the electromagnetic lock is unlocked or locked, can accurately feedback whether the lock tongue is inserted into the lock buckle, and can also accurately judge whether the electromagnetic lock buckle coil assembly is functioning normally; it overcomes the shortcomings of the prior art that the electromagnetic lock is unlocked or locked by judging whether the feedback voltage or current is within the set threshold range, which is prone to misjudgment, and there is no feasible mechanical structure, and it cannot judge whether the mechanical structure for unlocking or locking is actuated in place.

[0069] like Figure 1As shown, the present invention discloses an active anti-theft electromagnetic lock with an actuating structure and signal feedback, comprising: a lock housing assembly 1, an electromagnetic transmission assembly 2, a lock body transmission assembly 3 and a lock seat assembly 4. The electromagnetic transmission assembly 2 is mounted on the lock body transmission assembly 3 by screws; after the electromagnetic transmission assembly 2 is mounted on the lock body transmission assembly 3, the lock body transmission assembly 3 is mounted on the lock seat assembly 4 by screws; the lock housing assembly 1 is mounted on the lock seat assembly 4 by screws, which can fix the cable assembly 10 and protect the internal structures of the electromagnetic transmission assembly 2, the lock body transmission assembly 3 and the lock seat assembly 4.

[0070] like Figure 2 As shown, the electromagnetic transmission assembly 2 is provided with a coil assembly 12, a copper sleeve 13, a coil support frame assembly 8, an armature 7, a magnet box assembly 5, a cylindrical helical spring 6, an actuating rod assembly 11, a micro switch I9 and a cable assembly 10. The coil assembly 12 is inserted into the copper sleeve 13 and mounted on the coil support frame assembly 8; the cylindrical helical spring 6 is mounted on the armature 7 and then mounted together on the coil support frame assembly 8; the magnet box assembly 5 is mounted on one end of the armature 7 by screws; the actuating rod assembly 11 is mounted on the other end of the armature 7; the micro switch I9 is ​​mounted on the coil support frame assembly 8 by screws; and the cable assembly 10 is welded and connected to the coil assembly 12 and the micro switch I9.

[0071] like Figure 3 As shown, the lock body transmission assembly 3 is provided with a fixing frame assembly 19, a locking assembly 15, a safety block assembly 16, a micro switch II 20, a micro switch III 18, a torsion spring II 14 and a torsion spring I 17. The electromagnetic transmission component 2, the locking component 15, the safety block component 16, the micro switch II 20 and the micro switch III 18 are installed on the fixing frame component 19; the permanent magnet is installed in the magnet box component 5 for magnetization; the electromagnetic transmission component 2 can attract the armature 7 when it is energized, and the magnet box component 5 can support the micro switch I 9 installed on the coil support frame component 8 at the end of the attraction movement, and at the same time, the armature 7 can support the coil support frame component 8; the actuator rod component 11 can be linked with the safety block component 16; the safety block component 16 can be linked with the locking component 15; the safety block component 16 can rotate around the axis and can return to its original position under the action of the torsion spring I 17; the locking component 15 can rotate around the axis and can return to its original position under the action of the torsion spring II 14, and trigger the micro switch II 20; the micro switch II 20 and the micro switch III 18 are welded and connected to the cable component 10.

[0072] like Figure 4 As shown, the transmission block 29 can move linearly to trigger the micro switch III18.

[0073] like Figure 5As shown, the lock seat assembly 4 is provided with a lock seat 27, a lock catch 23, a lock catch rod 28, a locking transmission rod assembly 21, a torsion spring III 24, a torsion spring IV 22, a torsion spring V 26 and a lock tongue transmission assembly 25. The lock catch 23 is installed on the lock seat 27 through the lock catch rod 28, and the lock catch 23 can rotate around the lock catch rod 28 and can return to its original position under the action of the torsion spring III 24; the torsion spring IV 22 is installed on the locking transmission rod assembly 21, and then installed together on the lock seat 27; the locking transmission rod assembly 21 can rotate around the axis and can return to its original position under the action of the torsion spring IV 22; the locking transmission rod assembly 21 can limit and release the rotation function of the lock catch 23; the lock tongue transmission assembly 25 is installed on the lock seat 27, and when the lock tongue on the door presses against or releases the lock tongue transmission assembly 25, the lock tongue transmission assembly 25 will rotate; the torsion spring V 26 can return the lock tongue transmission assembly 25 to its original position.

[0074] The shaft retaining rings include shaft retaining ring I 102 , shaft retaining ring II 103 and shaft retaining ring III 104 .

[0075] The locking transmission rod assembly 21 is mounted on the lock seat 27 through the shaft retaining ring Ⅰ102;

[0076] Both ends of the lock rod 28 are respectively installed on the lock seat 27 through the shaft retaining ring II 103 and the shaft retaining ring III 104 to limit the lock rod 28 from escaping from the axial direction of the mounting hole of the lock seat.

[0077] The present invention has three micro switches and three signal feedbacks, namely, signal feedback of whether the coil assembly is normal, signal feedback of unlocking and unlocking, and signal feedback of opening and closing the door; the three signal feedback modes are as follows:

[0078] 1) Signal feedback of whether the coil assembly is normal: The micro switch Ⅰ9 installed on the coil support frame assembly 8 can judge whether the coil assembly (such as Figure 1 , Figure 2As shown, there are two coil assemblies 12, namely a main coil assembly 12.1 and a spare coil assembly 12.2. Both the main coil assembly 12.1 and the spare coil assembly 12.2 are installed on the coil support frame assembly 8. Both the main coil assembly 12.1 and the spare coil assembly 12.2 are installed with thermal protection resistors and are independent of each other. When the main coil assembly 12.1 fails, the spare coil assembly 12.2 can relay the lock in the low-level state, and when the main coil assembly 12.1 heats up and the electromagnetic attraction decreases, it does not affect the state and use of the spare coil assembly; the high-level to low-level power-on switching time is within 1s, and the main coil assembly 12 .1 can realize the function in the normal locking working steps; the main coil component 12.1 switches to the backup coil component within 300 milliseconds, and the backup coil component 12.2 can realize the relay locking function of the present invention;) is normal, after the coil component is energized, it generates electromagnetic force to attract the armature 7 and the magnet box component 5 installed on the armature 7, and the magnet box component 5 touches the micro switch Ⅰ9. If the coil component cannot produce magnetic force after power is turned on (it means that the coil component is damaged), the magnet box component 5 cannot touch the micro switch Ⅰ9, and the micro switch Ⅰ9 signal will be abnormal (that is, it does not conform to the predetermined logic of the monitoring system, and the predetermined logic of the monitoring system is as follows Fig.15 , Fig.16 As shown), it is identified by the monitoring system (the monitoring system is the prior art);

[0079] 2) Unlocking and unlocking signal feedback: The micro switch II 20 installed on one side of the fixing frame assembly 19 can directly feedback the position of the actuating structure to determine whether the electromagnetic lock is unlocked or locked. The principle is: when power is turned on, the locking assembly 15 is hinged on the fixing frame assembly 19 and rotates. When it leaves the micro switch II 20, it obtains a locking signal and moves to the bottom of the locking transmission rod assembly 21. At this time, the locking assembly 15 presses against the locking transmission rod assembly 21 (that is, the locking transmission rod assembly 21 is limited). When the locking transmission rod assembly 21 is pressed, the lock buckle 23 is also stuck and fixed. The lock buckle 23 is fixed, that is, the electromagnetic lock buckle of the present invention is locked (the locking logic is as shown in FIG. 2 ). Fig.15 shown);

[0080] On the contrary, after power failure, the locking assembly 15 returns to its original position under the action of the torsion spring II 14, and the micro switch II 20 is touched, and an unlocking signal is obtained, the limit of the locking transmission rod assembly 21 is released, and the electromagnetic lock of the present invention is unlocked (the unlocking logic is as follows Fig.16 shown).

[0081] 3) Door opening and closing signal feedback: The micro switch III 18 can feedback whether the door is closed; the principle is: when the door is closed, the lock tongue on the door presses against the lock tongue transmission assembly 25 of the electromagnetic lock, and the second V-shaped surface 25.1 of the lock tongue transmission assembly 25 pushes the first V-shaped surface 29.1 on the transmission block 29, causing it to move linearly, triggering the micro switch III 18, and the electromagnetic lock feedback door closing signal is recognized by the monitoring system. On the contrary, the lock tongue on the door is separated from the lock tongue transmission assembly 25 of the electromagnetic lock, and the switch button of the micro switch III 18 rebounds, and the electromagnetic lock feedback door opening signal is recognized by the monitoring system.

[0082] Therefore, the present invention has the ability to feedback a signal of whether the electromagnetic lock coil assembly is normal, a signal of whether the electromagnetic lock is unlocked or locked, and a signal of whether the door is closed.

[0083] like Figures 1 to 12 As shown, the working steps of the active anti-theft electromagnetic lock with actuating structure and signal feedback described in the present invention are as follows:

[0084] 1) Locking working steps:

[0085] When the door is closed, the lock tongue on the door is inserted into the lock buckle 23, pressing against the lock tongue transmission assembly 25, and causing the lock tongue transmission assembly 25 to rotate. The second V-shaped surface 25.1 of the lock tongue transmission assembly 25 actuates the V-shaped surface of the transmission block 29, causing the transmission block 29 to move linearly until it touches the micro switch III 18. The micro switch III 18 generates an on-off signal to the control system, and the control system can recognize that the lock tongue on the door is inserted into the lock buckle 23. The control system (i.e., the monitoring system) switches according to the preset logic (the preset locking logic of the control system is as follows: Fig.15As shown in the figure, the coil assembly 12 is energized, and the coil assembly 12 forms a closed magnetic circuit under the action of the coil support frame assembly 8, overcomes the elastic force of the cylindrical coil spring 6, attracts the armature 7 and the magnet box assembly 5 to move toward the coil assembly 12, until the armature 7 abuts against the coil support frame assembly 8, and the magnetic attraction movement generated by the coil assembly 12 ends. At this time, the magnet box assembly 5 triggers the micro switch Ⅰ9 with the movement of the armature 7, and the micro switch Ⅰ9 generates an on-off signal to the control system, and the control system can recognize that the coil assembly 12 is working normally. During the attraction process, the actuator rod assembly 11 moves with the armature 7 toward the coil assembly 12, and is linked with the safety block assembly 16. At this time, the safety block assembly 16 is separated from the locking assembly 15 under the action of the torsion spring Ⅰ17, and is in a position against the locking assembly 15, which plays a safety role. When the locking assembly 15 rotates around the axis to the bottom of the locking transmission rod assembly 21 under the action of the torsion spring II 14, it is just restricted by the fixing frame assembly 19. At this time, the locking assembly 15 is separated from the micro switch II 20, and the micro switch II 20 generates an on-off signal to the control system, and the control system can recognize that the locking assembly 15 is working normally. The locking transmission rod assembly 21 can only be restricted in the direction of rotation of the locking assembly 15. When the movement of the locking transmission rod assembly 21 is restricted by the locking assembly 15, the rotation direction of the lock buckle 23 is also restricted by the locking transmission rod assembly 21, and the active anti-theft electromagnetic lock buckle with signal feedback of the actuating structure is locked.

[0086] 2) Unlocking steps:

[0087] When the door needs to be opened, the coil assembly 12 is powered off, the armature 7 returns to its original position under the elastic force of the cylindrical coil spring 6, the magnet box assembly 5 moves with the armature 7 and leaves the micro switch Ⅰ9, and the micro switch Ⅰ9 generates an on-off signal to the control system, and the control system can recognize that the coil assembly 12 has stopped working, and the control system (i.e., the monitoring system) opens the door according to the preset logic (the preset unlocking logic of the control system is as follows). Fig.16 As shown), the coil assembly 12 is de-energized. The actuating rod assembly 11 mounted on the armature 7 is linked to the safety block assembly 16, and the safety block assembly 16 is linked to the locking assembly 15, so that the locking assembly 15 leaves the bottom of the locking transmission rod assembly 21, and the rotation restriction of the locking transmission rod assembly 21 is released. As a result, the rotation restriction of the lock catch 23 restricted by the locking transmission rod assembly 21 is also released. As the locking assembly 15 leaves the bottom of the locking transmission rod assembly 21, the micro switch II 20 generates an on-off signal to the control system, and the control system can recognize that the active anti-theft electromagnetic lock catch with signal feedback of the actuating structure is in the unlocked state, and there is no need to rotate the door handle and insert the key to unlock, and the door can be opened by pushing it.

[0088] 3) Door opening signal feedback:

[0089] When the door is opened, the lock tongue on the door leaves the lock buckle 23, disengages from the lock tongue transmission assembly 25, and rotates the lock tongue transmission assembly 25 back to its original position, and the second V-shaped surface 25.1 of the lock tongue transmission assembly 25 returns to a state parallel to the first V-shaped surface 29.1 of the transmission block 29. The transmission block 29 is pushed open linearly under the contact thrust of the micro switch III 18, and the micro switch III 18 is no longer triggered. The micro switch III 18 generates an on-off signal to the control system, and the control system can recognize that the door is opened.

[0090] It is worth noting that the control system is easy to implement in identifying the on / off signal and turning on and off the power according to the preset logic, so it will not be described in detail.

[0091] Other parts not described belong to the prior art.

Claims

1. An active anti-theft electromagnetic lock with actuating structure and signal feedback, Features: It comprises a lock housing assembly (1), an electromagnetic transmission assembly (2), a lock body transmission assembly (3) and a lock seat assembly (4); The electromagnetic transmission component (2) is mounted on the lock body transmission component (3); The lock housing assembly (1) and the lock body transmission assembly (3) are both mounted on the lock base assembly (4); The electromagnetic transmission assembly (2) and the lock body transmission assembly (3) are both located between the lock housing assembly (1) and the lock seat assembly (4); The electromagnetic transmission assembly (2) comprises a magnet box assembly (5), a cylindrical helical spring (6), an armature (7), a coil support frame assembly (8), a micro switch I (9), a cable assembly (10), an actuating rod assembly (11), a coil assembly (12) and a copper sleeve (13); the magnet box assembly (5), the cylindrical helical spring (6), the armature (7), the micro switch I (9), the cable assembly (10), the actuating rod assembly (11), the coil assembly (12) and the copper sleeve (13) are all mounted on the coil support frame assembly (8); the cable assembly (10) is connected to the micro switch I (9) and the coil assembly (12) by welding; The lock body transmission assembly (3) comprises a torsion spring II (14), a locking assembly (15), a safety block assembly (16), a torsion spring I (17), a micro switch III (18), a fixing frame assembly (19) and a micro switch II (20); the locking assembly (15), the safety block assembly (16), the micro switch II (20) and the micro switch III (18) are mounted on the fixing frame assembly (19); the cable assembly (10) is welded to the micro switch II (20) and the micro switch III (18); The lock base assembly (4) comprises a locking transmission rod assembly (21), a torsion spring IV (22), a lock catch (23), a torsion spring III (24), a lock tongue transmission assembly (25), a torsion spring V (26), a lock base (27) and a lock catch rod (28); the locking transmission rod assembly (21), the torsion spring IV (22), the lock catch (23), the torsion spring III (24), the lock tongue transmission assembly (25), the torsion spring V (26) and the lock catch rod (28) are all installed on the lock base (27); the locking transmission rod assembly (21), the lock catch (23) and the lock tongue transmission assembly (25) are arranged in sequence from top to bottom.

2. The active anti-theft electromagnetic lock with actuation structure and signal feedback according to claim 1, Features: The micro switch I (9) is mounted on the upper end of the coil support frame assembly (8); The coil assembly (12) is inserted into the copper sleeve (13) and installed in the coil support frame assembly (8); The cylindrical helical spring (6) is mounted on the armature (7), and the armature (7) is mounted in the coil support frame assembly (8) and in the coil assembly (12); The magnet box assembly (5) and the actuating rod assembly (11) are respectively mounted on both sides of the coil supporting frame assembly (8).

3. The active anti-theft electromagnetic lock with actuation structure and signal feedback according to claim 1 or 2, Features: A micro switch III (18) and a micro switch II (20) are respectively mounted on both sides of the fixing frame assembly (19); the locking assembly (15) is hingedly mounted on the fixing frame assembly (19); and the torsion spring II (14) is mounted on the locking assembly (15) and is located between the locking assembly (15) and the fixing frame assembly (19); The safety block assembly (16) is hingedly mounted on the fixing frame assembly (19) and is located above the locking assembly (15); the torsion spring I (17) is mounted on the safety block assembly (16) and is located between the safety block assembly (16) and the fixing frame assembly (19).

4. The active anti-theft electromagnetic lock with actuation structure and signal feedback according to claim 3, Features: The lock body transmission assembly (3) also includes a transmission block (29), which is mounted on the fixing frame assembly (19) and is movably connected to the fixing frame assembly (19); The transmission block (29) is located below the micro switch III (18).

5. The active anti-theft electromagnetic lock with actuation structure and signal feedback according to claim 4, Features: A first V-shaped surface (29.1) is provided on the transmission block (29); A second V-shaped surface (25.1) is provided on the bolt transmission assembly (25); The first V-shaped surface (29.1) matches the second V-shaped surface (25.1) and is arranged in parallel.

6. The active anti-theft electromagnetic lock with actuation structure and signal feedback according to claim 5, Features: The lock catch (23) is hingedly mounted on the lock seat (27) through a lock catch rod (28) and is located below the locking transmission rod assembly (21); the torsion spring III (24) is mounted on the lock catch (23) and is located between the lock catch (23) and the lock seat (27); The locking transmission rod assembly (21) is hingedly mounted on the lock seat (27); the torsion spring IV (22) is mounted on the locking transmission rod assembly (21) and is located between the locking transmission rod assembly (21) and the lock seat (27); The bolt transmission assembly (25) is hingedly mounted on the lock seat (27) and is located below the lock catch (23). The torsion spring V (26) is mounted on the bolt transmission assembly (25) and is located between the bolt transmission assembly (25) and the lock seat (27).

7. The active anti-theft electromagnetic lock with actuation structure and signal feedback according to claim 6, Features: The lock housing assembly (1) is a sheet metal part and is mounted on the lock seat (27) by screws.

8. The active anti-theft electromagnetic lock with actuation structure and signal feedback according to claim 7, Features: The locking transmission rod assembly (21) and the locking rod (28) are both mounted on the lock seat (27) via a shaft retaining ring; One end of the cylindrical helical spring (6) abuts against the magnet box assembly (5), and the other end abuts against the coil support frame assembly (8).

9. The active anti-theft electromagnetic lock with actuation structure and signal feedback according to claim 8, Features: A permanent magnet is installed in the magnet box assembly (5); The actuating rod assembly (11), the locking assembly (15), the safety block assembly (16) and the fixing frame assembly (19) are made of weak magnetic or non-magnetic materials; The coil support frame assembly (8) is made of magnetic conductive material.

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