CN113622751B

CN113622751B - Electromagnetic anti-theft door

Info

Publication number: CN113622751B
Application number: CN202110908492.4A
Authority: CN
Inventors: 李翠翠; 吕吉祥; 田俊佳; 黄向阳; 王川川; 郭延杰; 罗梅青; 陈明磊
Original assignee: Zhejiang Xingyue Security Technology Co ltd
Current assignee: Zhejiang Xingyue Security Technology Co ltd
Priority date: 2021-08-09
Filing date: 2021-08-09
Publication date: 2022-05-20
Anticipated expiration: 2041-08-09
Also published as: CN113622751A

Abstract

The invention relates to the technical field of anti-theft doors, and discloses an electromagnetic anti-theft door which comprises a door frame, a door leaf and an anti-theft lock positioned on the door leaf, wherein the anti-theft lock comprises a lock body and a key, the lock body comprises at least one lock tongue and a lock cylinder fixed in the lock body, the expansion and contraction of the lock tongue are controlled by the power on or power off of a first electromagnet, the power on or power off of the first electromagnet is controlled by a first control circuit, one side of the lock cylinder facing the outside of the door is recessed with a slot, a control module capable of connecting or disconnecting the control circuit is arranged in the lock cylinder, the control module comprises N (N is more than or equal to 8) through slots recessed along the circumferential direction and/or the axial direction of the inner wall of the slot, a contact module fixedly arranged at one end of at most N-1 through slots far away from the slot and an expansion piece elastically and telescopically arranged in each through slot, the key comprises an inserted bar and an unlocking piece which is telescopically arranged on the outer ring wall of the inserted bar and can drive the first control circuit to be connected, a thief can not open the anti-theft door by utilizing the traditional hook needle unlocking and tin foil filling unlocking modes.

Description

Electromagnetic anti-theft door

Technical Field

The invention relates to the technical field of security doors, in particular to an electromagnetic security door.

Background

The anti-theft essence of the anti-theft door lies in an anti-theft lock arranged on the anti-theft door, the anti-theft lock is generally divided into an A-level lock, a B-level lock and a C-level lock, the difficulty of unlocking the anti-theft lock is gradually increased, generally, the A-level lock needs at least one minute when being unlocked by adopting a technology, the B-level lock needs more than 5 minutes when being unlocked by adopting the technology, the unlocking time of the C-level lock is very long, and needs several hours, generally, a thief can directly give up the C-level lock, the C-level lock is difficult to unlock due to the fact that the C-level lock is inherently the unlocking probability problem, a marble structure on the anti-theft door is formed by locking a double-row 48 blades and a double-type side column, but the manufacturing of the anti-theft door needs extremely high precision, the manufacturing cost is high, and people mainly adopt the A-level lock and the B-level lock based on the cost consideration.

The unlocking skills adopted by thieves generally comprise hook needle unlocking (aiming at a simple A-level linear lock), and tin foil key slot unlocking (mainly aiming at anti-theft locks with different lock holes, such as linear locks, cross locks, circular locks, arc locks, and kaba locks), and the second method has extremely high unlocking probability and over 90% success rate.

Along with the update of the anti-theft lock, an electromagnetic lock appears, Chinese patent with publication No. CN203594337U discloses an anti-theft door with an automatic electromagnetic locking device, the structure comprises an anti-theft door main body, a door frame, a handle, a lock cylinder, a lock head and a power supply, the handle is arranged at the inner side of the anti-theft door main body, magnetic frames are arranged at the upper side, the lower side and the right side of the anti-theft door main body, electromagnets are respectively arranged at the four sides of the door frame, the electromagnets are connected into a whole through wires, a through hole is arranged at the position of the door frame corresponding to the lock head, a binding post connected with the power supply is arranged in the through hole, the lock head just falls into the through hole when the door is closed, the wires are connected with the binding post, the electromagnets are electrified through the power supply, and the electromagnets are firmly adsorbed on the magnetic frames at the upper side, the lower side and the right side of the anti-theft door main body, thereby realizing the automatic electromagnetic locking. When the door is opened, the lock core is rotated to enable the lock head to slide out of the through hole, at the moment, the wire is disconnected from the wiring terminal, the power supply stops charging the electromagnet, and the antitheft door is opened by pulling the handle.

This scheme compares in current electromagnetic lock, combines with mechanical structure, and the slip through key rotation lock core control tapered end realizes the disconnection or the UNICOM of wire and terminal to replace the controller to control the switch of electro-magnet, and is more safe, but its structure is similar with A level lock, and the thief adopts the mode that the tin paper filled the key groove just can order about the lock core very easily and slide, and the thief that the technique is conscientious utilizes 1-5 minutes just can open this kind of burglary-resisting door, so, and the theftproof performance is relatively poor.

Disclosure of Invention

The invention aims to overcome the defect of low anti-theft performance of the existing electromagnetic lock in the background art and aims to provide an electromagnetic anti-theft door with remarkably improved anti-theft performance.

In order to solve the technical problems, the invention provides the following technical scheme: an electromagnetic anti-theft door comprises a door frame, a door leaf and an anti-theft lock positioned on the door leaf, wherein the anti-theft lock comprises a lock body and a key, the lock body comprises at least one bolt which is elastically and telescopically arranged at one side of the lock body close to the door frame and is inserted and locked with the door frame when extending out and a lock cylinder fixed in the lock body, the bolt is telescopically controlled by the power on or power off of a first electromagnet arranged in the lock body, the power on or power off of the first electromagnet is controlled by a first control circuit, one side of the lock cylinder facing the door is sunken with an insertion groove, a control module capable of being communicated or disconnected with the control circuit is arranged in the lock cylinder, the control module comprises N (N is more than or equal to 8) through grooves which are sunken along the circumferential direction and/or the axial direction of the inner wall of the insertion groove, a contact module fixedly arranged at one end of at most N-1 through grooves far away from the insertion groove and a telescopic piece which is elastically and telescopically arranged in each through groove, the extensible member is in seamless connection with the inner wall of the slot when stretching out, the key comprises an inserted bar which can be inserted into the slot and an unlocking piece which can be arranged on the outer annular wall of the inserted bar in a telescopic mode and can be completely retracted into the inserted bar or locally stretch out of the inserted bar and then drive the extensible member provided with the contact module to completely retract so as to communicate with a first control circuit, when the first control circuit is communicated, the first electromagnet is powered on, the spring bolt retracts to unlock, and the extensible member is controlled by a driving mechanism.

Through the scheme, the slot is arranged in the lock cylinder, the control module is arranged in the lock cylinder and comprises N through grooves, at most N-1 contact modules are arranged in the through grooves, so at least 1 through groove is a confusion point, when the number of the through grooves is more, the number of the contact modules and the confusion point is unknown, hundreds of attempts or even dozens of thousands of attempts are possible, only the key can be used for unlocking, namely only the unlocking piece arranged on the key extends out completely and pushes the telescopic piece onto the contact module to communicate the first control circuit, the first electromagnet can be driven to be electrified, the lock tongue can retract to unlock, and the thief cannot determine the number and the set position of the contacts at all, so the thief cannot unlock by using a hook needle mode, and likewise, only the shape of the slot can be obtained by using the tin foil for filling, the set number and the set position of the contacts cannot be known at all, the event, utilize two kinds of traditional very high very fast unblock modes of rate of unblanking to open this lock at all, showing and having increased the theftproof performance, in addition, traditional mechanical lock is because inner structure is complicated, needs the key to rotate and unblanks, in case can not open the lock, the user often can wrench movement key and open by force and lead to the key fracture in the key hole, and the key of this scheme need not to wrench movement and opens the door, so, can not have cracked problem, improved the life of pickproof lock.

Furthermore, one side of the telescopic piece close to the slot is consistent with the shape of the inner wall of the slot and is in seamless connection with the inner wall of the slot when the telescopic piece extends out.

Through the scheme, the through grooves are perfectly hidden by the telescopic piece when the telescopic piece extends out, so that a thief cannot know the positions of the through grooves, and the concealment is improved.

Furthermore, the contact module comprises an insulating seat which is fixedly inserted into the through groove and far away from one end of the slot, two contact sections which are inserted into the insulating seat at intervals, and a conductive section which is arranged at one end of the telescopic piece far away from the slot in a protruding mode and can be contacted with the two contact sections simultaneously.

Furthermore, the setting range of N is 8-40.

Through the scheme, the number of the N is more than 8, and the probability of unlocking by a thief is considered to be when the number of the N is 8

P is probability, C is the possible number of time occurrences

Furthermore, the setting number of the contact modules ranges from 1/3N to 2/3N.

With the above arrangement, in the range in which a plurality of contact modules can be set, even if the number of contact modules is known, when the number of contact modules is set to be near the middle of the total number, the probability of unlocking by a thief is lower.

Furthermore, the depth of the through grooves is the same or different, and the length of the telescopic piece is matched with the through grooves matched with the telescopic piece.

Through above-mentioned scheme, it has the difference to mean to lead to the groove angle when leading to the groove degree of depth difference, and the thief is harder to utilize the instrument to drive the extensible member and stretches out and draws back.

Furthermore, a protective sleeve which is detachably connected with the lock body is sleeved outside the lock cylinder, an interval through which a line can pass is arranged between the protective sleeve and the lock cylinder, and a line passing groove through which the line can pass is formed in the protective sleeve.

Furthermore, a reinforced locking structure is arranged between the door leaf and the door frame, the reinforced locking structure comprises an inserting locking block which is elastically and telescopically arranged at the upper end of the door leaf and/or at one side and/or the lower end of one end far away from the lock tongue, the telescopic function of the inserting locking block is controlled by the power on or power off of a second electromagnet embedded in the door leaf, and the power on or power off of the second electromagnet is controlled by the connection or disconnection of a first control circuit.

Through above-mentioned scheme, strengthen locking structure and spring bolt and by control of first control circuit, it is more simple and convenient to operate, but its theftproof performance is stronger, even the thief utilizes under the condition of violence harm pickproof lock, because the existence of grafting locking piece, also can't break the door and go into, unless destroy all grafting locking pieces or whole door leaf totally, this can obviously not accomplish in the short time, so, can further show the increase theftproof performance.

Furthermore, a control button capable of simultaneously controlling the first electromagnet and the second electromagnet to be powered on or powered off is arranged on one side of the lock body facing the indoor space, and the control button, the first electromagnet and the second electromagnet are connected in series on a second control circuit.

Furthermore, the driving mechanism comprises a containing groove which is sunken in the outer annular wall of the inserted bar and a third electromagnet which is fixedly arranged at the bottom of the containing groove, the unlocking piece can be completely retracted into the containing groove or partially extended out of the containing groove, a third spring is arranged between the unlocking piece and the third electromagnet, two ends of the third spring are respectively fixedly connected with the unlocking piece and the third electromagnet, and the power-on or power-off of the third electromagnet is controlled by a third control circuit.

Compared with the prior art, the invention has the following beneficial effects:

1. the inside slot that sets up of lock core to built-in control module in the lock core, control module has included N logical groove, the contact module that sets up in N-1 logical groove at most, so, 1 logical groove exists at least and is for obscuring the point, it is more to set up when leading to the groove number, the number of contact module and obscuring the point is because unknown, so, there is tens of thousands or even tens of thousands of attempts possible, and only can to unblank be the key, the thief can't utilize the mode that crochet hook and tinfoil were filled to unblank, the theftproof performance has been showing and has been increased, in addition, traditional mechanical lock is because inner structure is complicated, need the key to rotate to unblank, lead to its fracture easily in the key hole after the key card is astringent, the key of this scheme need not to twist to open the door, so, there can not have the cracked problem of key, the life of lock and key has been improved.

2. The extensible member is when stretching out and slot inner wall seamless joint, even can not see the fit clearance of extensible member and lock core from the slot even with the magnifying glass, the thief can't find the position place of extensible member, can't learn the setting number of extensible member, set up the position and set up the angle, further increased the theftproof performance.

3. Add and strengthen the locking structure, utilize the key can realize synchro control with the spring bolt, but strengthen the locking structure under the normality and be in synchronous state of stretching out with the spring bolt, even the thief utilizes the violence mode of unblanking to pound bad whole lock body, also can't part door leaf and doorframe, further increased the theftproof performance.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

fig. 1 is an isometric view of an electromagnetic security door of embodiment 1;

fig. 2 is an isometric view of the pickproof lock of embodiment 1;

fig. 3 is an exploded view of the antitheft lock of embodiment 1;

FIG. 4 is an enlarged view of A of FIG. 3;

fig. 5 is an enlarged view of B of fig. 4;

fig. 6 is a front view of the key of embodiment 1;

FIG. 7 is a sectional view A-A of FIG. 6;

fig. 8 is a front view of a door leaf in the electromagnetic antitheft door according to embodiment 2.

In the figure: 1. a door frame; 2. a door leaf; 3. a lock body; 4. a handle; 5. a lock cylinder; 6. a key; 601. rotating the head; 602. inserting a rod; 603. a drive switch; 604. unlocking the lock; 7. a latch bolt; 8. a first electromagnet; 9. a first spring; 10. a thread groove; 11. a protective sleeve; 12. a wire passing groove; 13. an external thread; 14. a slot; 15. a guide block; 16. a guide groove; 17. a through groove; 18. a telescoping member; 19. a conductive segment; 20. a fourth spring; 21. an insulating base; 22. a contact section; 23. a third electromagnet; 24. a third spring; 25. a wire accommodating groove; 26. a second electromagnet; 27. a second spring; 28. and a locking block is inserted.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Example 1

The utility model provides an electromagnetism burglary-resisting door, refer to fig. 1-6 and show, including door frame 1, articulate door leaf 2 on door frame 1 and be located the pickproof lock on door leaf 2, all be provided with handle 4 in the both sides of pickproof lock, door frame 1 is fixed on the wall, door frame 1 is made by the stainless steel, door leaf 2 includes inside prevent fire door core and parcel stainless steel layer outside, stainless steel layer thickness is greater than 0.5cm, in this scheme, the modified is the pickproof lock, thereby the theftproof performance of whole burglary-resisting door is improved to theftproof performance through increasing the pickproof lock.

The anti-theft lock is shown by referring to fig. 2-3, and comprises a lock body 3 and a key 6, wherein the lock body 3 comprises at least one lock tongue 7 which is elastically and telescopically arranged at one side of the lock body 3 close to a door frame 1 and is inserted and locked with the door frame 1 when extending out, and a lock cylinder 5 fixed in the lock body 3, a plurality of lock tongues 7 are longitudinally arranged at intervals, 3 lock tongues 7 are arranged in the scheme, the shapes of the lock tongues 7 are the same or different, a lock groove into which each lock tongue 7 can be respectively inserted is arranged on the door frame 1, the extension and retraction of all the lock tongues 7 are simultaneously controlled by the power on or power off of a first electromagnet 8 arranged in the lock body 3, the specific arrangement structure between the lock tongues and the lock body is that the lock groove is sunken at one side of the lock body 3 close to the door frame 1, the lock tongues 7 can be completely retracted into the lock groove or partially extend out of the lock groove to be inserted and matched with the lock groove, the first electromagnet 8 is fixedly arranged at the bottom of the lock groove, and set up first spring 9 between spring bolt 7 and first electro-magnet 8, the both ends of first spring 9 respectively with spring bolt 7 and first electro-magnet welded fastening.

The first electromagnet 8 is controlled by a first control circuit when power is switched on or off, the first control circuit comprises the first electromagnet 8 and a control module which can be connected with or disconnected from the control circuit, the first electromagnet 8 is connected with the control module in series, a slot 14 is formed in one side, facing the door, of the lock cylinder 5 in a concave mode, the control module is arranged in the lock cylinder 5, the shape of the slot 14 is circular or oval or regular polygon, and the circular shape is adopted in the embodiment and is convenient to produce.

The control module is specifically shown by referring to fig. 3-5, and comprises N (N is more than or equal to 8) through grooves 17 recessed along the circumferential direction and/or the axial direction of the inner wall of the slot 14, a contact module fixedly arranged at one end of at most N-1 through grooves 17 far away from the slot 14, and a telescopic piece 18 elastically and telescopically arranged in each through groove 17, wherein one side of the telescopic piece 18 close to the groove is arranged into a concave arc shape and is in seamless connection with the inner wall of the slot 14 when extending out, the through grooves 17 are perfectly hidden by the telescopic piece 18, a thief can only obtain the shape of the groove after inserting the tin foil into the slot 14, the arrangement positions and the number of the through grooves cannot be known, in order to increase the anti-theft performance, the more the through grooves 17 are, based on the manufacturing cost and the manufacturing difficulty, the preferable number of N is 15-40, the arrangement number and the arrangement positions of the electric shock modules are different on each anti-theft lock, the preferable arrangement number of the contact modules is 1/3N-2/3N, in the above structure, to the thief that adopts crochet hook or the mode that the tinfoil was filled and is unblanked, at first, the thief can't discern the existence that has logical groove 17, even spend a large amount of time groping, also can hardly find whole extensible member 18, because extensible member sets up the number a lot, and the contact module sets up the number and is less than the extensible member, the thief does not know at all that the contact module has several and distributes in the rear of which extensible member, so, the root cause is not followed, and in this scheme, only the first control circuit intercommunication can be ordered about to all contact modules, the degree of depth that leads to logical groove 17 can be the same or different, preferred degree of depth is different, because the existence of the degree of depth difference certainly leads to logical groove 17 to be irregular setting on lock core 5, the discernment and the unblock degree of thief's further has increased.

The contact module is shown in fig. 4-5, and includes an insulating base 21 inserted and fixed at one end of the through slot 17 far from the slot 14, two contact sections 22 inserted and fixed at the insulating base 21 with an interference distance, and a conductive section 19 protruding from one end of the telescopic member 18 far from the slot 14 and capable of contacting with the two contact sections, a fourth spring 20 is arranged between the telescopic member 18 and the insulating base 21, two ends of the fourth spring 20 are respectively fixedly connected with the telescopic member 18 and the insulating base 21, the insulating base 21 is made of plastic or rubber, the unlocking member 604 and the lock cylinder 5 are made of the same metal material, and the contact sections 22 and the conductive section 19 are made of copper with good conductivity.

In order to hide the contact module and the subsequent maintenance, a protective sleeve 11 detachably connected with the lock body 3 is sleeved outside the lock core 5, as shown in fig. 3, one end of the outer ring wall of the lock core 5 close to the outside of the door is welded on the lock body 3, a thread groove 10 for inserting the sleeve is recessed on one side of the lock body 3 facing the indoor, an external thread 13 matched with the thread groove 10 is arranged on the outer ring wall of the protective sleeve 11, after the protective sleeve 11 is fixed with the lock body 3, an interval for passing the line is arranged between the protective sleeve 11 and the lock core 5, a line passing groove 12 for passing the line out is arranged on the protective sleeve 11, a rotating piece convenient for rotating the sleeve is arranged on the outer wall of one end of the sleeve far away from the slot 14, when the line and the contact module on the first control circuit need to be checked, the conditions of the contact module and the line on the lock core can be checked by screwing down the protective sleeve 11, the protective sleeve can be installed to have the advantage of hiding the contact module on the lock core, plays a certain protection role.

The purpose of key 6 is can be with all contact module intercommunications in order to communicate first control circuit, just so, can order to actuate first electro-magnet 8 and have received the electricity and actuate spring bolt 7 shrink and carry out the unblock.

Therefore, the specific structure of the key 6 is shown in fig. 6 to 7: the key 6 includes a rotating head 601, an insertion rod 602 extending from one end of the rotating head 601 and capable of being inserted into the slot 14, and an unlocking member 604 telescopically disposed on an outer circumferential wall of the insertion rod 602, wherein the insertion rod 602 and the rotating head 601 are made of an insulating material, the unlocking member 604 can be completely retracted into the insertion rod 602 or partially extended out of the insertion rod 602 to drive the telescopic member 18 provided with the contact module to be completely retracted, and when the telescopic member 18 is retracted, the conductive section 19 thereon is inserted between the two contact sections 22 and simultaneously contacts with the two contact sections 22 to communicate a circuit.

The extension and retraction of the unlocking piece 604 is controlled by a driving mechanism, the driving mechanism comprises a containing groove recessed in the outer ring wall of the inserted rod 602 and a third electromagnet 23 fixedly arranged at the bottom of the containing groove, the unlocking piece 604 can be completely retracted into the containing groove or partially extended out of the containing groove, a third spring 24 is arranged between the unlocking piece 604 and the third electromagnet 23, the unlocking piece 604 is integrally made of iron or combined by insulating materials and iron, when the unlocking piece 604 is made of insulating materials and iron and combined parts, one end close to the third spring 24 is made of iron, one end far away from the third spring 24 is made of plastic, two ends of the third spring 24 are respectively welded and fixed with an iron block and the third electromagnet 23, the power on or power off of the third electromagnet 23 is controlled by a third control circuit, a wire containing groove 25 is arranged in the inserted rod 602 along the axial direction thereof, the bottom of the containing groove is communicated with the partial wire containing groove 25, the third control circuit comprises a driving switch 603 and the third electromagnet 23 which are mutually connected in series, the driving switch 603 is arranged at one end of the rotating head 601 far away from the inserting rod 602, a battery connected with the third electromagnet 23 and the driving switch 603 is arranged inside the inserting rod 602 or inside the rotating head 601, in a normal state, the third electromagnet 23 is in a power-off state, and all unlocking pieces 604 partially extend out of the accommodating groove; in order to reduce the floor area, the driving switch 603 may be switched as required to drive the third electromagnet 23 to be powered, at this time, all the unlocking pieces 604 may be retracted into the accommodating groove, and preferably, one end of the unlocking piece 604 far away from the third spring 24 is set to be a convex arc surface, which may increase the contact area with the telescopic piece 18.

In order to ensure that each unlocking member 604 can be aligned with the telescopic member provided with the contact module after the key 6 is inserted, a guiding mechanism is arranged between the slot 14 and the insert rod 602, and as shown in fig. 4, the guiding mechanism comprises a guide groove 16 recessed along the axial direction of the inner wall of the slot 14 and a guide block 15 protruding from one end of the insert rod 602 far away from the rotating head 601.

Be provided with a steerable first electro-magnet 8 and get electric or lose the control button of electricity towards indoor one side at the lock body, control button and first electro-magnet 8 establish ties on second control circuit, under the normality, first control circuit is in off-state all the time, only inserting of key 6 can order about its instantaneous power of getting electric and unblank, so, after door leaf 2 and 1 locking of door frame and the people is located indoorly, only need dabble control button, just order about the second circuit intercommunication to get electric, this moment, 7 contractions of spring bolt carry out the unblocks, it is convenient in order to improve, the optional electric switch of control button, electric switch is when the hand is loosened, automatic cutout second control circuit, under the exogenic action, door leaf 2 can with 1 locking of door frame.

When the door leaf 2 is locked with the door frame 1 and a user is located indoors, the door leaf 2 can be pushed outwards only by pressing the control button with one hand and pushing the door leaf 2 with the other hand; when the user is located outdoors, the key 6 is taken out, at this time, it is necessary to ensure that the third electromagnet 23 of the key 6 is in a powered state, the unlocking piece 604 is retracted into the insertion rod 602, the insertion rod 602 is inserted into the slot 14 along the guide slot 16, then the driving switch 603 is switched, the third electromagnet 23 is powered off, at this time, the unlocking piece 604 pops out to push the corresponding telescopic piece 18 to retract, the conductive section 19 on the telescopic piece 18 is inserted between the two contact sections 22 of the contact module to communicate with the first control circuit, at this time, the first electromagnet 8 is powered on, the lock tongue 7 is retracted, and the door leaf 2 is unlocked from the door frame 1.

The scheme can achieve the anti-theft performance of the same super C-level lock aiming at the crochet hook unlocking and the tinfoil filling unlocking of a thief, and the overall structure is simpler, and is easier to assemble and produce compared with the structure of the super C-level lock.

Example 2

This embodiment adds between door leaf 2 and door frame 1 and strengthens locking structure on embodiment 1's basis, and aim at increases the thief and exposes the degree of difficulty of opening the door, and after the thief damaged whole lock body 3 with exposing even cuts off spring bolt 7, strengthen locking structure still firmly fixed door leaf 2 and door frame 1 together.

The reinforced locking structure is shown in fig. 8, and comprises an inserting locking block 28 which is elastically and telescopically arranged at the upper end of the door leaf 2 and/or at one side and/or the lower end of one end far away from the bolt 7, a slotted hole for the inserting locking block 28 to be completely retracted or partially extended is sunken in the door leaf 2, the extension and retraction of the inserting locking block 28 are controlled by the power on or power off of a second electromagnet 26 fixed at the bottom of the slotted hole, the inserting locking block 28 is made of iron, a second spring 27 is arranged between the inserting locking block 28 and the second electromagnet 26, two ends of the second spring 27 are respectively and fixedly connected with the inserting locking block 28 and the second electromagnet 26, and the power on or power off of the second electromagnet 26 is controlled by the connection or disconnection of a first control circuit.

The first control circuit comprises a first electromagnet 8, a second electromagnet 26 and a contact module arranged in series with each other. Meanwhile, the second control circuit comprises a first electromagnet 8, a second electromagnet 26 and a control button which are mutually connected in series.

The same driving mode is adopted for door opening, but the embodiment has the advantages of the embodiment 1 and also increases the anti-theft performance of violent unlocking.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides an electromagnetism burglary-resisting door, includes door frame (1), door leaf (2) and is located the pickproof lock on door leaf (2), its characterized in that: the anti-theft lock comprises a lock body (3) and a key (6), wherein the lock body (3) comprises at least one bolt (7) which is elastically and telescopically arranged at one side of the lock body (3) close to a door frame (1) and is locked with the door frame (1) in an inserting mode when extending out, and a lock cylinder (5) fixed in the lock body (3), the bolt (7) is stretched and contracted under the control of the electrification or the power loss of a first electromagnet (8) built in the lock body (3), the electrification or the power loss of the first electromagnet (8) is controlled by a first control circuit, one side, facing the outside of a door, of the lock cylinder (5) is sunken with a slot (14), a control module capable of being communicated or disconnected with the control circuit is arranged in the lock cylinder (5), the control module comprises N (N) through grooves (17) which are sunken along the circumferential direction and/or the axial direction of the inner wall of the slot (14), a contact module fixedly arranged at most at one end, far away from the slot (14), of the N-1 through groove (17), and elastic telescopic arrangement in each through groove (17) The contact module comprises an insulating seat (21) which is fixedly inserted into the through groove (17) and is far away from one end of the slot (14), two contact sections (22) which are inserted into the insulating seat (21) at intervals, and a conductive section (19) which is convexly arranged at one end of the telescopic piece (18) far away from the slot (14) and can be contacted with the two contact sections (22), the key (6) comprises an insertion rod (602) which can be inserted into the slot (14) and an unlocking piece (604) which is telescopically arranged on the outer annular wall of the insertion rod (602) and can be completely retracted into the insertion rod (602) or partially extended out of the insertion rod (602) and then drives the telescopic piece (18) provided with the contact module to be completely retracted to communicate with the first control circuit, when the first control circuit is communicated, the first electromagnet (8) is electrified, the bolt (7) is retracted to unlock, and the extension of the unlocking piece (604) is controlled by a driving mechanism, the driving mechanism comprises a containing groove which is recessed in the outer annular wall of the inserted rod (602) and a third electromagnet (23) which is fixedly arranged at the bottom of the containing groove, the unlocking piece (604) can be completely retracted into the containing groove or partially extended out of the containing groove, a third spring (24) is arranged between the unlocking piece (604) and the third electromagnet (23), two ends of the third spring (24) are respectively and fixedly connected with the unlocking piece (604) and the third electromagnet (23), and the power-on or power-off of the third electromagnet (23) is controlled by a third control circuit.

2. An electromagnetic security door according to claim 1, wherein: one side of the telescopic piece (18) close to the slot (14) is consistent with the shape of the inner wall of the slot (14) and is in seamless joint with the inner wall of the slot (14) when the telescopic piece extends out.

3. An electromagnetic security door according to claim 1, wherein: the setting range of N is 8-40.

4. An electromagnetic security door according to claim 3, wherein: the setting number range of the contact modules is 1/3N-2/3N.

5. An electromagnetic security door according to claim 1, wherein: the through grooves (17) are arranged in the same or different depths, and the length of the telescopic piece (18) is matched with the through grooves (17) matched with the telescopic piece.

6. An electromagnetic security door according to claim 1, wherein: the lock cylinder (5) is externally sleeved with a protective sleeve (11) which is detachably connected with the lock body (3), an interval through which a line can pass is arranged between the protective sleeve (11) and the lock cylinder (5), and the protective sleeve (11) is provided with a line passing groove (12) through which the line can pass.

7. An electromagnetic security door according to claim 1, wherein: be provided with between door leaf (2) and door frame (1) and strengthen the locking structure, strengthen the locking structure and include in the upper end of door leaf (2) and/or keep away from one side and/or the grafting locking piece (28) that the lower extreme elasticity of the one end of spring bolt (7) set up telescopically, the flexible of grafting locking piece (28) is controlled by the second electro-magnet (26) of embedding in door leaf (2) the getting electric or losing the electricity, the getting electric or losing the electricity of second electro-magnet (26) is controlled by the intercommunication or the disconnection of first control circuit.

8. An electromagnetic security door according to claim 7, wherein: a control button capable of simultaneously controlling the first electromagnet (8) and the second electromagnet (26) to be electrified or deenergized is arranged on one side, facing the indoor, of the lock body (3), and the control button, the first electromagnet (8) and the second electromagnet (26) are connected in series on a second control circuit.