CN212295960U

CN212295960U - Electromagnetic lock

Info

Publication number: CN212295960U
Application number: CN202020329259.1U
Authority: CN
Inventors: 董磊; 李元东; 曲秋莳
Original assignee: Beijing Jing Rui Rui Mechanical And Electrical Equipment Co ltd
Current assignee: Beijing Jing Rui Rui Mechanical And Electrical Equipment Co ltd
Priority date: 2020-03-16
Filing date: 2020-03-16
Publication date: 2021-01-05
Anticipated expiration: 2030-03-16

Abstract

The utility model discloses an electromagnetic lock, which comprises a slide block and a travel switch; the slide is configured to be movable between a first position and a second position; the travel switch is configured to be capable of sending a door opening in-place signal and a door closing in-place signal; when the sliding block moves to the first position, the electromagnetic lock can unlock two sliding doors to allow the two sliding doors to be opened, and the sliding block can touch the travel switch to enable the travel switch to send the door opening-in-place signal when the sliding block moves to the first position; when the sliding block moves to the second position, the electromagnetic lock can lock the two sliding doors which are closed in place, and the sliding block can be separated from the travel switch when moving to the second position, so that the travel switch sends the door closing in-place signal. The utility model discloses an electromagnetic lock can realize the miniaturization to can be applicable to the limited occasion of installation space, and also reduced the fault rate.

Description

Electromagnetic lock

Technical Field

The utility model relates to a lock technical field specifically relates to an electromagnetic lock.

Background

Among the prior art, the locking sheave of the electromagnetic lock among the subway platform door system is overall structure, and one of the horizontal sliding door at first closes the door and targets in place, and when another did not close the door and targets in place, the locking sheave of electromagnetic lock still can rotate to the locking position and the lock that falls, consequently, prior art's electromagnetic lock must be provided with and closes the door and target in place travel switch in order to guarantee to know that two sliding doors all close the door and target in place: when the two sliding doors are closed in place and locked, the door closing in-place travel switch sends door closing information to the train, so that the safety of passengers is guaranteed. Because prior art's electromagnetic lock must set up the travel switch that targets in place that opens the door, consequently it is provided with the travel switch that targets in place that closes the door simultaneously and opens the door to the condition of the travel switch that targets in place, and the structure can't realize simplifying to cause the unable miniaturized problem of the whole volume of electromagnetic lock, and set up two travel switches simultaneously and also increased the fault rate of electromagnetic lock.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the problem that prior art exists, providing an electromagnetic lock, this electromagnetic lock can realize the miniaturization to can be applicable to the limited occasion of installation space, and also reduced the fault rate.

In order to achieve the above object, the present invention provides an electromagnetic lock for unlocking and locking two sliding doors of a subway platform door, the electromagnetic lock comprising a slider and a travel switch; the slide is configured to be movable between a first position and a second position; the travel switch is configured to be capable of sending a door opening in-place signal and a door closing in-place signal; when the sliding block moves to the first position, the electromagnetic lock can unlock the two sliding doors to allow the two sliding doors to be opened, and the sliding block can touch the travel switch to enable the travel switch to send the door opening-in-place signal when the sliding block moves to the first position; when the sliding block moves to the second position, the electromagnetic lock can lock the two sliding doors which are closed in place, and the sliding block can be separated from the travel switch when moving to the second position, so that the travel switch sends the door closing in-place signal.

Optionally, the electromagnetic lock includes a stopping mechanism configured to prevent the slider from moving to the second position when the two sliding doors are opened, and to allow the slider to move to the second position when the two sliding doors are closed.

Optionally, the first position and the second position are arranged from top to bottom along a vertical direction; the electromagnetic lock includes a drive mechanism configured to: the driving force can be provided for the slider to enable the slider to overcome the self-gravity to move from the second position to the first position, and at least part of the driving force can be removed to enable the slider to move from the first position to the second position under the self-gravity; the stopping mechanism comprises a stopping block, a stopping pin and a pin shaft, the pin shaft is fixedly arranged, the stopping block is of an eccentric structure and comprises a shaft hole matched with the pin shaft, the stopping pin is fixedly arranged on the stopping block, and the stopping block is arranged on the pin shaft through the shaft hole and can rotate around the pin shaft; the lower part of the sliding block is provided with a groove matched with the stop pin; the stop block can rotate around the pin shaft under the action of the eccentric dead weight to drive the stop pin to rotate to a stop position, and the stop block can be pushed by the sliding door to rotate around the pin shaft against the eccentric dead weight so as to drive the stop pin to rotate to a release position; in the stop position, the stop pin is able to enter the groove of the slider to prevent the slider from moving to the second position, and in the release position, the stop pin is disengaged from the groove of the slider to allow the slider to move to the second position.

Optionally, a lock tongue adapted to the lock groove of the sliding door is arranged at the lower part of the sliding block; and/or, the stopping mechanism comprises a roller, the roller is rotatably arranged on the stopping block, and the sliding door drives the stopping block to rotate around the pin shaft by pushing the roller.

Optionally, the number of the grooves is two, the two grooves are symmetrically arranged on two sides of the lower portion of the sliding block, the number of the stopping mechanisms is two, and the two stopping mechanisms are respectively arranged corresponding to the two grooves.

Optionally, the driving mechanism includes an electromagnetic coil and an armature, the electromagnetic coil is fixedly disposed, the armature is disposed on the slider, and the electromagnetic coil can attract the armature when being electrified to move the slider from the second position to the first position.

Optionally, the number of the electromagnetic coils is two, the two electromagnetic coils are arranged at intervals in the horizontal direction and are connected in parallel, the number of the armatures is two, and the two armatures are respectively arranged on two sides of the sliding block so as to respectively correspond to the two electromagnetic coils.

Optionally, the driving mechanism includes a manual transmission rod, and the manual transmission rod is fixedly disposed on the slider to push the slider to move from the second position to the first position under the action of external pushing force.

Optionally, the travel switch includes two switch bodies and two spring pieces, the two switch bodies are arranged at intervals, the two spring pieces are respectively arranged on the two switch bodies, and an end of the spring piece, which is far away from the switch body connected with the spring piece, is located between the two switch bodies; the travel switch is configured to: the two elastic sheets can enable the switch body to send the door opening in-place signal when the end parts of the two elastic sheets are far away from each other and deform, and enable the switch body to send the door closing in-place signal when the two elastic sheets reset; the sliding block comprises a push rod, the push rod can push the two end parts to be away from each other when the sliding block moves to the first position, and the push rod can be separated from the two end parts when the sliding block moves to the second position so as to enable the two elastic pieces to reset.

Optionally, the electromagnetic lock includes a bottom plate, the slider is parallel to the bottom plate, and the travel switch is disposed on the bottom plate and between the slider and the bottom plate.

The utility model discloses in, work as the slider removes extremely during the first position, the touching travel switch, travel switch sends open the door and target in place signal to outside platform door accuse ware, in order to show the electromagnetic lock unblock targets in place, platform door gate accuse ware can control two sliding door removes in order to realize opening the door to both sides respectively. When two after the sliding door closed in place, the slider removed to the second position, the electromagnetic lock is to closing two that the door put in place the sliding door carries out the locking, simultaneously, is located the second position the slider breaks away from travel switch, travel switch sends close the door and put in place the signal, inform operating personnel or passenger two the sliding door has closed the door and put in place, and the train can normally travel, can not appear because of the sliding door does not close the door and puts in place and lead to the passenger to fall down or fall orbital unexpected condition. The utility model discloses only can realize sending through a travel switch and open the door the function of the signal that targets in place and sending the signal that targets in place of closing the door, compare in prior art, the quantity of travel switch that has significantly reduced has not only reduced the fault rate of electromagnetic lock, also makes simultaneously the utility model discloses an electromagnetic lock can realize the miniaturization to can be applicable to the limited occasion of installation space.

Drawings

Fig. 1 is a schematic view of an electromagnetic lock of the present invention used for a door of a subway platform;

FIG. 2 is a front view of an embodiment of the electromagnetic lock of the present invention with the slide block in a first position;

FIG. 3 is an isometric view of FIG. 2;

FIG. 4 is an isometric view of FIG. 2;

FIG. 5 is a top view of FIG. 2;

FIG. 6 is a front view of an embodiment of the electromagnetic lock of the present invention with the slide block in a second position;

FIG. 7 is an isometric view of FIG. 6;

fig. 8 is a schematic structural diagram of the electromagnetic coil of the electromagnetic lock of the present invention;

FIG. 9 is a front view of a slider of the electromagnetic lock of the present invention;

FIG. 10 is an isometric view of FIG. 9;

FIG. 11 is a side view of FIG. 9;

fig. 12 is a front view of the travel switch of the electromagnetic lock of the present invention;

fig. 13 is an isometric view of fig. 12.

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.

As shown in fig. 1, the electromagnetic lock of the present invention is used for unlocking and locking two sliding doors S of a subway platform door, and the electromagnetic lock includes a slider 100 and a travel switch 200; the slider 100 is configured to be movable between a first position and a second position; the travel switch 200 is configured to be able to send a door open in-place signal and a door closed in-place signal; when the sliding block 100 moves to the first position, the electromagnetic lock can unlock the two sliding doors S to allow the two sliding doors S to be opened, and when the sliding block 100 moves to the first position, the sliding block 100 can touch the travel switch 200 to enable the travel switch 200 to send a door opening in-place signal; when the slider 100 moves to the second position, the electromagnetic lock can lock the two sliding doors S closed in place, and the slider 100 can disengage from the travel switch 200 when moving to the second position so that the travel switch 200 sends a door closing in-place signal.

Through the technical scheme, when the sliding block 100 moves to the first position, the travel switch 200 is touched, the travel switch 200 sends a door opening in-place signal to the external platform door controller to indicate that the electromagnetic lock is unlocked in place, and the platform door controller can control the two sliding doors S to respectively move towards two sides to realize door opening. After the two sliding doors S are closed in place, the sliding block 100 moves to the second position, the electromagnetic lock locks the two sliding doors S closed in place, meanwhile, the sliding block 100 located at the second position is separated from the travel switch 200, the travel switch 200 sends a door closing in-place signal to inform an operator or a passenger that the two sliding doors S are closed in place, the train can normally run, and the accident that the passenger falls down or falls off the track due to the fact that the sliding doors S are not closed in place can be avoided. The utility model discloses only can realize sending through a travel switch 200 and open the door the function of the signal that targets in place and sending the signal that targets in place of closing the door, compare in prior art, the quantity of travel switch that has significantly reduced has not only reduced the fault rate of electromagnetic lock, also makes simultaneously the utility model discloses an electromagnetic lock can realize the miniaturization to can be applicable to the limited occasion of installation space.

When the two sliding doors S are opened, if the sliding block 100 moves to the second position, the door closing operation of the sliding doors S may be affected, so that the sliding doors S cannot be closed normally, and therefore, the sliding block 100 needs to be controlled so as not to move to the second position when the sliding doors S are opened. It should be understood that there are various ways to control the slider 100, and in order to more effectively prevent the slider 100 from moving to the second position when the sliding doors S are in the open state, in an embodiment of the present invention, the electromagnetic lock includes a stopping mechanism configured to prevent the slider 100 from moving to the second position when the two sliding doors S are open, and to allow the slider 100 to move to the second position when the two sliding doors S are closed.

It should be understood that the stopping mechanism may be provided in various forms, for example, the slider 100 is controlled not to move to the second position by electromagnetic means, but the physical contact type stopping is more reliable and effective compared to the electromagnetic control type stopping, and for this reason, the stopping mechanism may block the slider 100 from moving to the second position by physical contact.

As shown in fig. 2 to 13, in order to automate the stopping action of the stopping mechanism as much as possible, thereby reducing the labor burden or the electric control cost, in an embodiment of the present invention, the first position and the second position are arranged from top to bottom in a vertical direction; the electromagnetic lock includes a drive mechanism configured to: a driving force can be provided to the slider 100 to enable the slider 100 to overcome self gravity so as to be movable from the second position to the first position, and at least part of the driving force can be removed to enable the slider 100 to be movable from the first position to the second position under self gravity; the stopping mechanism comprises a stopping block 310, a stopping pin 320 and a pin shaft 330, the pin shaft 330 is fixedly arranged, the stopping block 310 is of an eccentric structure and comprises a shaft hole matched with the pin shaft 330, the stopping pin 320 is fixedly arranged on the stopping block 310, and the stopping block 310 is arranged on the pin shaft 330 through the shaft hole and can rotate around the pin shaft 330; the lower part of the slider 100 is provided with a groove 110 matched with the stop pin 320; the stop block 310 can rotate around the pin shaft 330 under the action of the eccentric self-weight to drive the stop pin 320 to rotate to the stop position, and the stop block 310 can be pushed by the sliding door S to rotate around the pin shaft 330 against the eccentric self-weight to drive the stop pin 320 to rotate to the release position; in the stop position, the stop pin 320 can enter the groove 110 of the slider 100 to prevent the slider 100 from moving toward the second position, and in the release position, the stop pin 320 is disengaged from the groove 110 of the slider 100 to allow the slider 100 to move toward the second position. It should be noted that the eccentric structure of the stop block 310 can be implemented in various ways as long as it is ensured that the center of gravity of the stop block 310 is not coincident with the shaft hole, for example, the stop block 310 itself is irregular shape, so that the center of gravity is not coincident with the shaft hole, or the stop block 310 itself is regular shape, and the shaft hole is located at the center thereof, but the center of gravity of the stop block 310 is not coincident with the shaft hole by arranging a mass block on the stop block 310.

To facilitate disengagement of the stop pin 320 from the groove 110, the notch of the groove 110 should be at least partially oriented toward the side wall of the slider 100, i.e., the bottom of the groove 110 can be seen directly through the notch of the groove 110 when looking from one side of the slider 100 toward the slider 100. In an embodiment of the present invention, the lowest portion of the side wall of the slider 100 is bent inward to form the groove 110, i.e. the groove bottom of the groove 110 can be seen through the notch no matter seen from a side of the slider 100 to the slider 100 or seen from the lower side of the slider 100 to the slider 100, so that the advantage of the arrangement is that the groove 110 does not obstruct the stop pin 320 from entering and exiting from the side of the slider 100 or from the lower side of the slider 100, and the possibility of malfunction is greatly reduced.

When the sliding block 100 is located at the second position, in order to ensure that the electromagnetic lock can lock the sliding door S, specifically, as shown in fig. 1, a locking tongue 120 adapted to the locking groove of the sliding door S is disposed at the lower portion of the sliding block 100, and when the sliding block 100 is located at the second position, the locking tongue 120 is just inserted into the locking groove of the sliding door S.

In order to enable the stopper block 310 to be more smoothly pushed by the sliding door S to drive the stopper pin 320 to the release position, and to improve the service life of the stopper block 310 and the sliding door S, as shown in fig. 3 and 4, the stopper mechanism includes a roller 340, the roller 340 is rotatably disposed on the stopper block 310, and the sliding door S drives the stopper block 310 to rotate about the pin 330 by pushing the roller 340.

In order to improve the stopping effect of the stopping mechanisms and ensure the balance of the slider 100 during the moving process, optionally, the number of the grooves 110 is two, the two grooves 110 are symmetrically arranged on two sides of the lower portion of the slider 100, the number of the stopping mechanisms is two, and the two stopping mechanisms are respectively arranged corresponding to the two grooves 110.

It should be understood that the driving mechanism may be designed in various forms as long as it can move the slider 100 to the first position against its own weight. In one embodiment of the present invention, as shown in fig. 8 to 11, the driving mechanism includes a solenoid 410 and an armature 420, the solenoid 410 is fixedly disposed, the armature 420 is disposed on the slider 100, and the solenoid 410 can attract the armature 420 when being powered on to move the slider 100 from the second position to the first position.

It should be understood that the number of the electromagnetic coils 410 and the number of the armatures 420 may be arbitrarily set, in an embodiment of the present invention, the number of the electromagnetic coils 410 is two, the two electromagnetic coils 410 are spaced apart in the horizontal direction and are connected in parallel with each other, the number of the armatures 420 is two, and the two armatures 420 are respectively disposed at both sides of the slider 100 to respectively correspond to the two electromagnetic coils 410. This arrangement has the advantage that the two electromagnetic coils 410 are arranged at intervals in the horizontal direction, and the electromagnetic coils 410 with a smaller size and a lighter weight can be used, thereby ensuring that the electromagnetic lock has a lighter weight and a smaller volume. However, if a single electromagnetic coil with a large size and a heavy mass is used to move the slider 100 with a certain weight to the first position against its own weight, the overall weight of the electromagnetic lock is heavy, and the size of the electromagnetic lock is increased, which is not favorable for installation and use in a limited space.

In some cases, such as when the electromagnetic coil 410 or the armature 420 fails, in order to ensure that the slider 100 can effectively move to the first position, in an embodiment of the present invention, as shown in fig. 9 to 11, the driving mechanism includes a manual transmission rod 430, and the manual transmission rod 430 is fixedly disposed on the slider 100 to push the slider 100 to move from the second position to the first position under the external pushing force. The manual transmission lever 430 is provided to ensure that the slider 100 is effectively moved toward the first position, on the one hand, and when the voltage of the external power source to the electromagnetic coil 410 is reduced to a holding voltage (which is 50% of the voltage required by the electromagnetic coil 410 to pull in the armature 420), the operator can push the manual transmission lever 430 with a smaller pushing force to move the slider 100 toward the first position.

It should be understood that the travel switch 200 may be designed in various forms, and in an embodiment of the present invention, as shown in fig. 12 and 13, the travel switch 200 includes two switch bodies 210 and two spring pieces 220, the two switch bodies 210 are disposed at intervals, the two spring pieces 220 are respectively disposed on the two switch bodies 210, and an end of the spring piece 220 far away from the switch body 210 connected thereto is located between the two switch bodies 210; the travel switch 200 is configured to: when the two spring pieces 220 are deformed due to the fact that the end parts of the two spring pieces are far away from each other, the switch body 210 can send a door opening in-place signal, and when the two spring pieces 220 are reset, the switch body 210 can send a door closing in-place signal; the slider 100 includes a push rod 130, the push rod 130 can push the two end portions away from each other when the slider 100 moves to the first position, and the push rod 130 can disengage the two end portions to reset the two resilient sheets 220 when the slider 100 moves to the second position. That is, when the elastic sheet 220 deforms, the switch body 210 is triggered to send a door opening in-place signal, and when the elastic sheet 220 resets, the switch body 210 is also triggered to send a door closing in-place signal.

In order to reduce the volume of the electromagnetic lock as much as possible, the electromagnetic lock optionally includes a bottom plate 500, the slider 100 is disposed parallel to the bottom plate 500, and the travel switch 200 is disposed on the bottom plate 500 and between the slider 100 and the bottom plate 500. The travel switch 200 is arranged between the bottom plate 500 and the sliding block 100, so that the gap between the bottom plate 500 and the sliding block 100 can be effectively utilized, the purpose of reducing the size of the electromagnetic lock is achieved, meanwhile, the travel switch 200 can be protected, and the service life of the travel switch is prolonged.

The operation of the electromagnetic lock will be explained in conjunction with the preferred embodiment of the present invention.

The unlocking process of the electromagnetic lock comprises the following steps: when the sliding door S of the subway platform door is opened, the platform door controller energizes the two electromagnetic coils 410 of the electromagnetic lock, the armature 420 drives the sliding block 100 to move upwards, the bolt 120 at the lower end of the sliding block 100 is separated from the locking groove of the sliding door S, unlocking of the sliding door S is realized, the sliding block 100 continues to move upwards under the driving of the armature 420 until the ejector rod 130 pushes the two elastic pieces 220 to deform to trigger the switch body 210, the switch body 210 sends a door opening in-place signal to the platform door controller, and the platform door controller drives the motor power output shaft of the door machine to rotate again, so that the sliding door S moves towards the door opening direction. When the slider 100 moves to the first position, the stopper 310 rotates under the action of the eccentric self-weight, and the stopper pin 320 enters the groove 110 of the slider 100 to limit the slider 100 to the first position. When the slider 100 of the electromagnetic lock is in the first position, the voltage applied to the solenoid 410 by the platform door operator is reduced to the holding voltage.

The unlocking process can also be carried out manually: when the manual unlocking is performed, a manual unlocking key at the platform side of the sliding door S or a manual unlocking wrench at the rail side needs to be operated, when the manual transmission rod 430 of the electromagnetic lock is jacked up by the operation key or the manual unlocking wrench, the sliding block 100 moves upwards synchronously, and the subsequent process is the same as the unlocking process, which is not described herein again.

The locking process of the electromagnetic lock: when the platform door controller sends a door closing command, the platform door controller and the motor drive the sliding door S to move in the door closing direction, when the sliding door S contacts with the roller 340 of the electromagnetic lock, the roller 340 is pushed to drive the stop block 310 to rotate, so that the stop pin 320 is separated from the groove 110 of the slider 100, the slider 100 stops the stop mechanism and immediately falls, when the slider 100 falls, the sliding door S continues to move in the door closing direction and stops at the door closing position, and at this time, the lock tongue 120 of the slider 100 falls into the lock groove of the sliding door S, so that the locking of the sliding door S is completed.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited thereto. In the technical idea scope of the present invention, it is possible to provide a solution of the present invention with a plurality of simple modifications to avoid unnecessary repetition, and the present invention is not described separately for various possible combinations. These simple variations and combinations should also be considered as disclosed in the present invention, all falling within the scope of protection of the present invention.

Claims

1. An electromagnetic lock for unlocking and locking two sliding doors (S) of a subway platform door, characterized in that the electromagnetic lock comprises a slider (100) and a travel switch (200);

the slide (100) is configured to be movable between a first position and a second position;

the travel switch (200) is configured to be capable of sending a door opening in-place signal and a door closing in-place signal;

wherein the electromagnetic lock can unlock the two sliding doors (S) to allow the two sliding doors (S) to be opened when the sliding block (100) moves to the first position, and the sliding block (100) can touch the travel switch (200) to enable the travel switch (200) to send the door open-position signal when the sliding block (100) moves to the first position; when the sliding block (100) moves to the second position, the electromagnetic lock can lock the two sliding doors (S) which are closed in place, and when the sliding block (100) moves to the second position, the sliding block can be disengaged from the travel switch (200) to enable the travel switch (200) to send the closed-door-in-place signal.

2. An electromagnetic lock, according to claim 1, characterized in that it comprises a stop mechanism configured to prevent the slider (100) from moving to said second position when both sliding doors (S) are open and to allow the slider (100) to move to said second position when both sliding doors (S) are closed in position.

3. An electromagnetic lock according to claim 2, wherein said first position and said second position are vertically aligned from top to bottom;

the electromagnetic lock includes a drive mechanism configured to: -a driving force is able to be provided to the slider (100) to enable the slider (100) to move from the second position to the first position against its own weight, and at least part of the driving force is able to be removed to enable the slider (100) to move from the first position to the second position under its own weight;

the stopping mechanism comprises a stopping block (310), a stopping pin (320) and a pin shaft (330), the pin shaft (330) is fixedly arranged, the stopping block (310) is of an eccentric structure and comprises a shaft hole matched with the pin shaft (330), the stopping pin (320) is fixedly arranged on the stopping block (310), and the stopping block (310) is installed on the pin shaft (330) through the shaft hole and can rotate around the pin shaft (330);

the lower part of the sliding block (100) is provided with a groove (110) matched with the stop pin (320);

the stop block (310) can rotate around the pin shaft (330) under the action of eccentric self-weight to drive the stop pin (320) to rotate to a stop position, and the stop block (310) can be pushed by the sliding door (S) to rotate around the pin shaft (330) against the eccentric self-weight so as to drive the stop pin (320) to rotate to a release position; in the stop position, the stop pin (320) is capable of entering the groove (110) of the slider (100) to prevent the slider (100) from moving to the second position, and in the release position, the stop pin (320) is disengaged from the groove (110) of the slider (100) to allow the slider (100) to move to the second position.

4. The electromagnetic lock according to claim 3, characterized in that the lower part of the slider (100) is provided with a bolt (120) adapted to the lock groove of the sliding door (S); and/or the stopping mechanism comprises a roller (340), the roller (340) is rotatably arranged on the stopping block (310), and the sliding door (S) drives the stopping block (310) to rotate around the pin shaft (330) by pushing the roller (340).

5. The electromagnetic lock according to claim 3, characterized in that the number of the grooves (110) is two, two of the grooves (110) are symmetrically arranged on both sides of the lower portion of the slider (100), and the number of the catching mechanisms is two, and two of the catching mechanisms are respectively arranged corresponding to the two grooves (110).

6. The electromagnetic lock according to claim 5, characterized in that the drive mechanism comprises an electromagnetic coil (410) and an armature (420), the electromagnetic coil (410) being fixedly arranged, the armature (420) being arranged on the slide (100), the electromagnetic coil (410) being capable of attracting the armature (420) to move the slide (100) from the second position to the first position when energized.

7. The electromagnetic lock according to claim 6, characterized in that the number of the electromagnetic coils (410) is two, two of the electromagnetic coils (410) are arranged at intervals in the horizontal direction and are connected in parallel with each other, the number of the armatures (420) is two, and the two armatures (420) are respectively arranged on both sides of the slider (100) to respectively correspond to the two electromagnetic coils (410).

8. An electromagnetic lock according to claim 5, characterized in that the drive mechanism comprises a manual transmission lever (430), said manual transmission lever (430) being fixedly arranged on said slider (100) to be able to push said slider (100) from said second position to said first position under the influence of an external pushing force.

9. The electromagnetic lock according to any one of claims 1 to 8, characterized in that the travel switch (200) comprises two switch bodies (210) and two spring plates (220), the two switch bodies (210) are arranged at intervals, the two spring plates (220) are respectively arranged on the two switch bodies (210), and the end of the spring plate (220) far away from the switch body (210) connected with the spring plate is positioned between the two switch bodies (210);

the travel switch (200) is configured to: when the two elastic sheets (220) are deformed due to the fact that the end parts of the two elastic sheets are far away from each other, the switch body (210) can send the door opening in-place signal, and when the two elastic sheets (220) reset, the switch body (210) can send the door closing in-place signal;

the sliding block (100) comprises a top rod (130), the top rod (130) can push the two end parts to be away from each other when the sliding block (100) moves to the first position, and the top rod (130) can be separated from the two end parts when the sliding block (100) moves to the second position so as to reset the two elastic sheets (220).

10. The electromagnetic lock according to claim 9, characterized in that it comprises a base plate (500), said slider (100) being arranged parallel to said base plate (500), said travel switch (200) being arranged on said base plate (500) and between said slider (100) and said base plate (500).