TWI750878B - Electromagnetic lock - Google Patents

Abstract

An electromagnetic lock, comprising a locking unit suitable for being installed on a door and comprising an adsorption plate and at least one buckle, and a locking unit suitable for being arranged on a door frame and comprising an electromagnetic device, at least one locking device and at least one limiter The device's magnetic lock unit. The electromagnetic device is used for adsorbing the adsorption plate, and when the door is in the door closing position, the adsorption plate faces the electromagnetic device. The lock device includes a lock with a lock portion and an elastic element. When the door is in the door-closing position, the lock is in a locked state in which the lock portion blocks the lock, and when the door is in the closed position When changing from the door-closing position to the door-opening position, the catch drives the lock catch toward one of the lock parts to release the catch to change the unlocked state. The limiting device includes a limiting block and a driver for driving the limiting block to change between a release state and a limiting state. When the limiting block is in the releasing state, the limiting block is in the release state. The block does not restrict the lock from changing from the locked state to the unlocked state, and when the limiting block is in the limiting state, the limiting block restricts the lock from changing from the locked state to the unlocked state.

Description

Electromagnetic lock

The present invention relates to a lock, in particular to an electromagnetic lock.

As shown in FIG. 1 , a conventional magnetic lock 1 includes a suction plate 101 disposed on a door 2 and an electromagnet module 102 disposed on a door frame 3 , so that when the door 2 is closed, the user The electromagnet module 102 can be energized through a switch (not shown in the figure), so that the electromagnet module 102 can generate electromagnetic attraction force to attract the suction plate 101 to lock the door 2. However, The electromagnetic attraction force generated by the electromagnet module 102 is proportional to the size of its own electromagnet. For higher portal security, the electromagnet module 102 with a larger size should be used. However, the larger size The electromagnet module 102 not only takes up space and is bulky, but also consumes more power.

Accordingly, it is an object of the present invention to provide an electromagnetic lock that overcomes at least one of the disadvantages of the prior art.

Therefore, the electromagnetic lock of the present invention is suitable for being installed on a door and a door frame. The door can be changed between a door opening position and a door closing position relative to the door frame. The electromagnetic lock includes a clamping unit and a magnetic lock unit.

The clamping unit is suitable for being arranged on the door, and includes an adsorption plate and at least one buckle, and the adsorption plate has an adsorption plane.

The magnetic lock unit is suitable for being arranged on the door frame, and includes an electromagnetic device, at least one locking device corresponding to the locking device, and at least one limiting device corresponding to the locking device.

The electromagnetic device is used for adsorbing the adsorption plate, and has a magnetic surface. When the door is in the closed position, the surface of the adsorption plate faces the electromagnetic device, and the magnetic surface and the adsorption surface can be in contact with each other.

The lock device includes a lock and an elastic element connected with the lock. The lock has a lock portion, and the lock can be in a locked state in which the lock portion blocks the lock and a lock portion of the lock. When the door is in the closed position, the latch is in the locked state, and when the door is changed from the closed position to the open position, the latch drives The lock is transformed from the locked state to the unlocked state, and the elastic element has potential energy that drives the lock to change from the unlocked state to the locked state.

The limit device includes a limit block and a driver. The limit block can be changed between a release state and a limit state. When the limit block is in the release state, the limit block without restricting the lock from changing from the locked state to the unlocked state, When the limiting block is in the limiting state, the limiting block restricts the lock from changing from the locking state to the unlocking state, and the driver is used for driving the limiting block in the releasing state and the limiting state change between.

The effect of the present invention is: the present invention utilizes the locking device and the limiting device to cooperate with the design of the electromagnetic device and the suction plate, in addition to the electromagnetic suction of the electromagnetic device to attract the suction plate, but also through the lock The buckle of the buckle device locks the buckle, and greatly increases the locking force of the suction plate. In this way, the present invention can effectively improve the security of the portal without using a larger size electromagnetic device.

100: Electromagnetic lock

10: Card unit

11: Adsorption plate

111: Adsorption plane

12: Snap

20: Magnetic lock unit

30: Shell

31: End Wall

32: First side wall

321: The first oblong hole

322: The first fixing hole

33: Second side wall

331: Second oblong hole

332: Second fixing hole

40: protective case

50: Electromagnetic device

51: Electromagnetic body

511: Magnetic plane

512: Install the back

513: Side

514: The first fixed column

515: Second fixed column

516: Shaft hole

52: Coil

60: Locking device

61: lock

611: Locking part

612: Pivot part

613: Card Department

614: Buffer

62: Elastic element

63: bumper

631: Protruding block

64: lock body

641: Axle block

70: Limiting device

71: Limit stop

711: Limiting part

712: Pivot part

713: Driven Department

714: Groove

72: Drive

721: valve body

722: Stem

723: Return spring

80: Control device

81: circuit board module

811: circuit board

812: Magnetic induction element

82: Trigger Module

821: Trigger pin

822: Magnetic Components

823: Compression spring

824: Front end

825: rear end

X: horizontal direction

Y: vertical direction

Z: height direction

200: Door

300: door frame

1: Magnetic lock

101: adsorption plate

102: Electromagnet module

2: Door

3: door frame

Other features and effects of the present invention will be clearly presented in the embodiments with reference to the drawings, wherein: FIG. 1 is a schematic diagram of the use state of a conventional magnetic lock; FIG. 2 is a part of an embodiment of the electromagnetic lock of the present invention. exploded perspective view; FIG. 3 is an exploded perspective view of this embodiment; FIG. 4 is a cross-sectional view of this embodiment, illustrating that a clamping unit of this embodiment is installed on a door, and a magnetic lock unit of this embodiment is installed on a door frame 5 is a sectional view taken along the line VV in FIG. 4; FIG. 6 is a combined perspective view of one of the two locking devices of the magnetic lock unit; Fig. 7 is an exploded perspective view of the locking device; Fig. 8 is a partially exploded perspective view illustrating two limiting devices of the magnetic lock unit; Fig. 9 is a view similar to Fig. 4, illustrating the door with the latch The two latches of the unit moving to the locking unit are in contact with the latches of the latching devices, and a trigger pin of a trigger module of a control device of the magnetic lock unit is in a non-triggered position; FIG. 10 is a similar In the view of FIG. 9, it is illustrated that the latches push the latches of the latching devices from a locked state to an unlocked state; FIG. 11 is a view similar to FIG. 10, illustrating that the door is in a closed position, The locks of the locking devices are reset to the locked state, the limiting blocks of the limiting devices swing to a limiting state, and the trigger pin is in a triggering position; FIG. 12 is a view similar to FIG. 11 , Fig. 13 is a view similar to Fig. 12, illustrating the movement of the door with the locking unit to the latches of the locking devices The latch is pushed from the locked state to the unlocked state; FIG. 14 is a view similar to FIG. 13 , illustrating that the door is in an opening position, and the latching unit moves with the door to the latches to release the locks Figure 15 is a view similar to Figure 11, illustrating that the door is pulled open by external force, and the buckles drive the locks The latch of the device pushes the limit stops of the limit devices inward until it is blocked by an electromagnetic body of an electromagnetic device of the magnetic lock unit; and FIG. 16 is a cross-sectional view taken along the line XVI-XVI in FIG. 15 .

Referring to FIGS. 2, 3, and 4, it is an embodiment of the electromagnetic lock 100 of the present invention, which is suitable for being installed on a door 200 and a door frame 300. The door 200 can be in a door opening position (see FIG. 4 ) and a door frame 300 relative to the door frame 300. The electromagnetic lock 100 includes a locking unit 10 and a magnetic lock unit 20 for changing between the door closing positions (see FIG. 11 ).

The clamping unit 10 is suitable for being installed on the door 200 and includes a suction plate 11 and two buckles 12 disposed at both ends of the suction plate 11 at intervals in a horizontal direction X. The suction plate 11 has a suction plate 11 . A plane 111, the adsorption plane 111 is located between the buckles 12 in the lateral direction X. It can be understood that, in other variations of this embodiment, the number of the buckles 12 may also be one.

As shown in FIGS. 3 , 4 and 5 , the magnetic lock unit 20 is suitable for being arranged on the door frame 300 , and includes a casing 30 suitable for being arranged on the door frame 300 , a casing 30 covering the casing 30 and having a U-shaped cross section The protective shell 40, an electromagnetic device 50, two corresponding to the locking devices 60 of the buckles 12, respectively corresponding to the limiting device 70 of the locking devices 60, and a control device 80. It can be understood that, in other variations of this embodiment, the number of the locking device 60 and the limiting device 70 may also be one.

In this embodiment, the housing 30 has two end walls 31 opposite to each other in the lateral direction X, a first side wall extending along the lateral direction X and locked to the end walls 31 32 , and a second side wall 33 opposite to the first side wall 32 in a height direction Z and locked to the end walls 31 .

The first side wall 32 has two first oblong holes 321 extending along the lateral direction X and spaced apart from each other in the lateral direction X, and two first fixing holes 322 spaced apart from each other in the lateral direction X.

The second side wall 33 has two second oblong holes 331 extending along the lateral direction X and spaced apart from each other in the lateral direction X, and two second fixing holes 332 spaced apart from each other in the lateral direction X. The second oblong holes The holes 331 are respectively opposite to the first oblong holes 321 , and the second fixing holes 332 are respectively opposite to the first fixing holes 322 . It can be understood that, in other variations of this embodiment, the number of the first oblong holes 321 , the first fixing holes 322 , the second oblong holes 331 and the first fixing holes 322 can also be for one.

The electromagnetic device 50 is disposed on the housing 30 and is used for adsorbing the suction plate 11 . The electromagnetic device 50 includes an electromagnetic body 51 and a coil 52 wound around the electromagnetic body 51 .

The electromagnetic body 51 has a magnetic attraction plane 511 , a mounting back side 512 opposite to the magnetic attraction plane 511 , and two side surfaces connected between the magnetic attraction plane 511 and the mounting back side 512 and oppositely arranged in the height direction Z 513, two first fixing posts 514 arranged on one of the side surfaces 513 and corresponding to the first fixing holes 322 respectively, and two second fixing posts 514 arranged on the other side 513 and corresponding to the second fixing holes 332 respectively column 515, and a shaft hole 516 extending from the magnetic attraction plane 511 to the mounting back surface 512 along a longitudinal direction Y, when the first side wall 32 and the second side wall 33 are locked to the end walls 31, the The first fixing posts 514 are respectively inserted into the first fixing holes 322 of the first side wall 32 , and the second fixing posts 515 are respectively inserted into the second fixing holes 332 of the second side wall 33 . It can be understood that, in other variations of this embodiment, the number of the first fixing pillars 514 and the number of the second fixing pillars 515 may also be one.

As shown in FIG. 11 , when the door 200 is in the closed position, the suction plate 11 faces the electromagnetic device 50 , and the magnetic suction plane 511 can be in contact with the suction plane 111 .

As shown in FIGS. 3 , 4 and 5 , the locking devices 60 are disposed on the housing 30 at intervals in the lateral direction X. Each locking device 60 includes a locking device 61 , and a locking device 61 is connected to the locking device 61 . the elastic element 62.

As shown in FIGS. 4 , 6 and 7 , the lock 61 includes two anti-collision pieces 63 spaced apart from each other, and a lock main body 64 sandwiched between the anti-collision pieces 63 . In this embodiment, the The material of the anti-collision sheet 63 is plastic, and the material of the lock body 64 is metal.

The lock 61 has a lock portion 611 , a pivot portion 612 pivoted on the housing 30 , a locking portion 613 , and a buffer portion 614 , and the pivot portion 612 is located between the lock portion 611 and the lock portion 612 . between the locking parts 613 . In this embodiment, the outer contour of the anti-collision pieces 63 at the locking portion 611 exceeds the locking body 64 , and the outer contour of the anti-collision pieces 63 at the buffer portion 614 exceeds the locking buckle body 64.

In this embodiment, the locking portion 611 is formed by the front end of the anti-collision pieces 63 and the front end of the locking main body 64 . The pivoting part 612 is composed of the axial blocks 641; the locking part 613 is composed of the rear end of the locking body 64; each anti-collision piece 63 has a convex The protruding blocks 631 and the buffer portion 614 are formed by the protruding blocks 631 of the anti-collision pieces 63 , but not limited thereto.

The locks 61 of each locking device 60 can be in a locked state in which the locking portion 611 blocks the respective buckles 12 (see FIG. 11 ) and an unlocking state where the locking portion 611 releases the respective buckles 12 state (see Figure 10).

As shown in FIG. 11 , when the door 200 is in the closed position, the latch 61 is in the locked state, and when the latch 61 is in the locked state, the buffer portion 614 and the outer casing 30 are in the locked state. One end wall 31 abuts to assist in constraining the latch 61 in the locked state, and to reduce the 10 , when the lock 61 is in the unlocked state, the buffer portion 614 is disengaged from the end wall 31 of the housing 30 .

As shown in FIGS. 12 , 13 and 14 , when the door 200 is changed from the closed position (see FIG. 12 ) to the open position (see FIG. 14 ), each latch 12 actuates the lock of the respective latch 60 The buckle 61 is transformed from the locked state (see FIG. 12 ) to the unlocked state (see FIG. 13 ), and the elastic element 62 has the function of urging the locking buckle 61 from the unlocked state (see FIG. 13 ). 13) The potential energy transformed towards the locked state (see Figure 14).

As shown in FIGS. 4 , 5 and 8 , the limiting devices 70 are disposed on the housing 30 at intervals in the lateral direction X. Each limiting device 70 includes a limiting block 71 and a driver 72 . In this embodiment, the electromagnetic device 50 is located between the locking devices 60 and the limiting blocks 71 of the limiting devices 70 in the lateral direction X. As shown in FIG.

The limit block 71 can be changed between a release state (as shown in FIG. 9 ) and a restricted state (as shown in FIG. 11 ). The limit block 71 has a limit portion 711 and a pivot portion 712 , and a driven portion 713 between the limiting portion 711 and the pivot portion 712 .

The pivot portion 712 is slidably connected to one of the first oblong holes 321 and one of the second oblong holes 331 corresponding to the first side wall 32 and the second side wall 33 . In this embodiment, it can be understood that the The pivoting portion 712 can be rotated relative to the corresponding one of the first oblong holes 321 and the one of the second oblong holes 331 . In addition, the pivoting portion 712 can also be relative to the corresponding one of the first oblong holes. 321 and one of the second oblong holes 331 move along the lateral direction X.

In this embodiment, the driven part 713 has two inserting grooves 714 (see FIG. 8 ) spaced apart in the height direction Z. As shown in FIG.

The driver 72 is used for driving the limit stopper 71 to change between the release state (as shown in FIG. 9 ) and the restriction state (as shown in FIG. 11 ).

The driver 72 has a valve body 721, a A valve stem 722 placed on the valve body 721 and connected to the driven part 713, and a return spring 723 arranged between the valve stem 722 and the valve body 721, the return spring 723 has the function of driving the valve stem 722 along the The potential energy that extends outward in the lateral direction X. In this embodiment, the driver 72 is a solenoid valve.

In this embodiment, the driver 72 of one of the limiting devices 70 is fixed on the first side wall 32 , and the valve stem 722 of the driver 72 of the one of the limiting devices 70 is the limiter of the one of the limiting devices 70 . One of the higher insertion grooves 714 of the driven portion 713 of the stopper 71 is slidably engaged, and the driver 72 of the other limit device 70 is fixed to the second side wall 33 , and the driver of the other limit device 70 The valve stem 722 of 72 is slidably engaged with one of the lower inserting grooves 714 of the driven portion 713 of the limiting block 71 of the other limiting device 70 .

As shown in FIG. 12 , when the limit block 71 is in the released state, the limit block 71 does not restrict the locking portion 613 of the lock 61 . The locking portion 711 will not prevent the locking portion 613 of the lock catch 61 from swinging inward, so that the limit stop 71 does not restrict the lock catch 61 from changing from the locked state (see FIG. 12 ) to the unlocked state (see FIG. 13 ). ).

As shown in FIG. 11 , when the limiting block 71 is in the limiting state, the limiting block 71 limits the locking portion 613 of the lock catch 61 , and further, the limiting portion of the limiting block 71 711 will block the locking portion 613 of the lock catch 61 from swinging inward, so that the limit stop 71 restricts the lock catch 61 from changing from the locked state (see FIG. 11 ) to the unlocked state (see Figure 13).

As shown in FIG. 11 , when the latch 61 is in the locked state and the limiting block 71 is in the limiting state, the limiting portion 711 of the limiting block 71 is located between the electromagnetic field in the lateral direction X Between the electromagnetic body 51 of the device 50 and the locking portion 613 of the lock 61 , the locking portion 613 of the lock 61 is between the limiting portion 711 of the limiting block 71 and the pivot connection in the lateral direction X between sections 712.

As shown in FIGS. 3 and 4 , the control device 80 is disposed on the casing 30 , and the control device 80 is electrically connected to the electromagnetic device 50 and the driver 72 , and is used to control whether the electromagnetic device 50 generates electromagnetic attraction force, and to control Whether to drive the driver 72.

The control device 80 includes a circuit board module 81 disposed on the mounting back surface 512 of the electromagnetic body 51 , and a trigger module 82 .

The circuit board module 81 is electrically connected to the electromagnetic device 50 and the driver 72, and has a circuit board 811 and a magnetic induction element 812 disposed on the circuit board 811. In this embodiment, the magnetic induction element 812 is a Hall element.

The trigger module 82 has a trigger pin 821 movably disposed in the shaft hole 516 of the electromagnetic body 51 along the longitudinal direction Y, a magnetic element 822 disposed in the trigger pin 821 and corresponding to the magnetic induction element 812 , and A compression spring 823 abuts between the trigger pin 821 and the circuit board module 81. In this embodiment, the magnetic element 822 is a magnet.

The trigger pin 821 has a front end 824 and a rear end 825, the magnetic The sexual element 822 is disposed on the rear end portion 825, and the trigger pin 821 can move relative to the electromagnetic body 51 between a non-triggered position (see FIG. 4 ) and a trigger position (see FIG. 11 ), as shown in FIG. 4 . , when the door 200 is at the opening position, the trigger pin 821 is at the non-triggered position, and when the trigger pin 821 is at the non-triggered position, the front end 824 protrudes out of the magnetic attraction plane 511 , The magnetic element 822 is far away from the magnetic induction element 812 and does not trigger the magnetic induction element 812. As shown in FIG. 11 , when the door 200 is in the closed position, the trigger pin 821 is at the trigger position, and when the trigger pin 821 is at the closed position In the trigger position, the front end 824 is retracted into the shaft hole 516 , the magnetic element 822 is adjacent to the magnetic induction element 812 , and the magnetic induction element 812 is triggered.

The compression spring 823 has potential energy that urges the trigger pin 821 to move from the trigger position (see Figure 11 ) towards the non- trigger position (see Figure 4 ).

Thereby, as shown in FIGS. 9 and 10 , when the user closes the door 200 from the opening position (see FIG. 4 ) to the door closing position (see FIG. 11 ), each buckle 12 of the locking unit 10 It will first come into contact with the locking portion 611 of the locking buckle 61 of the respective locking device 60 , and then each buckle 12 will push the locking portion 611 of the locking buckle 61 of the respective locking device 60 outward. , so that the locks 61 of the respective locking devices 60 swing from the locked state (see FIG. 9 ) to the unlocked state (see FIG. 10 ); then, as shown in FIGS. 10 and 11 , when the door 200 moves When reaching the door closing position, each buckle 12 will slide inward along the longitudinal direction Y through the locking portion 611 of the locking buckle 61 of the respective locking device 60 . At this time, the elastic element of each locking device 60 The elastic restoring force of 62 will release the lock 61 of each locking device 60 from the The unlocked state (see FIG. 10 ) is pushed back to the locked state (see FIG. 11 ), so that the locking portion 611 of the locking buckle 61 of each locking device 60 blocks the outer side of the respective locking buckle 12 to limit the The door 200 drives the locking unit 10 to move outward, and at the same time, the suction plane 111 of the suction plate 11 contacts with the magnetic suction plane 511 of the electromagnetic body 51, thereby forcing the trigger pin 821 to move to the trigger position, So that the magnetic element 822 triggers the magnetic induction element 812, the circuit board module 81 of the control device 80 will control the electromagnetic device 50 to generate electromagnetic attraction force, so that the magnetic attraction plane 511 of the electromagnetic body 51 attracts the attraction plate 11 , the circuit board module 81 of the control device 80 will also control the driver 72 of each limit device 70 to drive the limit stopper 71 of each limit device 70 from the release state (see FIG. 10 ) Swing to the restricted state (see FIG. 11 ) to restrict the latches 61 of the respective latching devices 60 in the locked state, thereby locking the door 200 , preferably, the circuit board of the control device 80 The module 81 will firstly control the electromagnetic device 50 to generate electromagnetic suction, and then control the driver 72 of each limiting device 70 to make the limiting block 71 of each limiting device 70 swing to the limiting state (see FIG. 11 ). .

On the contrary, as shown in Figs. 12, 13 and 14, when the user wants to open the door 200 from the closed door position (see Fig. 12) to the open door position (see Fig. 14), the user can use a control device that communicates with the control device. A switch (not shown) or a remote control (not shown) to which the circuit board module 81 of 80 is electrically connected, transmits control signals to the circuit board module 81 of the control device 80, so that the circuit of the control device 80 is The board module 81 controls the driver 72 of each limiting device 70 to drive the limiting block 71 of each limiting device 70 from the limiting state (see FIG. 11 ) swing to the release state (see FIG. 12 ), so as to no longer restrict the locks 61 of the respective locking devices 60 , and allow the circuit board module 81 of the control device 80 to control the electromagnetic device 50 stops generating the electromagnetic suction force, so that the electromagnetic device 50 releases the suction plate 11 to unlock the door 200 , preferably, the circuit board module 81 of the control device 80 will first control the driver 72 to make each limit The limit stop 71 of the device 70 swings to the release state, and then the electromagnetic device 50 is controlled to stop generating the electromagnetic suction force. In this way, when the user moves the door 200 from the closing position (see FIG. 12 ) to the opening position (see FIG. 12 ) 14) During the opening process, as shown in FIGS. 12 and 13, each buckle 12 of the locking unit 10 will first contact the locking portion 611 of the locking buckle 61 of the respective locking device 60, and then, Each buckle 12 will automatically push the locking portion 611 of the locking buckle 61 of the respective locking device 60 outward, so that the locking buckle 61 of the respective locking device 60 is released from the locked state (see FIG. 12 ). Swing to the unlocked state (see FIG. 13 ), after that, as shown in FIG. 14 , each latch 12 slides outward along the longitudinal direction Y through the latch portion 611 of the latch 61 of the respective latch device 60 . After that, the elastic restoring force of the elastic element 62 of each locking device 60 will push the locking buckle 61 of each locking device 60 from the unlocked state (see FIG. 13 ) back to the locked state (see FIG. 14 ) , for the next closing.

In addition, as shown in FIGS. 15 and 16 , after the door 200 is locked, if an outsider wants to open the door violently, but forcefully pulls the door 200 outward until the suction plate 11 is released from the electromagnetic body 51 , this , since the limiting portion 711 of the limiting block 71 of each limiting device 70 is located between the electromagnetic body 51 of the electromagnetic device 50 and the respective electromagnetic body 51 in the lateral direction X Between the locking portions 613 of the locks 61 of the locking device 60 , and the pivoting portions 712 of the limiting blocks 71 of each limiting device 70 are slidably connected to the first side wall 32 and the second side wall 33 Correspondingly, one of the first oblong holes 321 and one of the second oblong holes 331 correspond to each other. Therefore, when the door 200 is equipped with each latch 12, the latch portion of the latch 61 of the respective latch device 60 is locked. When 611 is pushed outward, and the locking portion 613 of the locking buckle 61 of the respective locking device 60 is forced to swing inward, the locking portion 613 of the locking buckle 61 of each locking device 60 can only hold the respective locking portion 613 at most. The limiting portion 711 of the limiting block 71 of the limiting device 70 is pushed inward along the lateral direction X to abut against one end of the electromagnetic body 51, and thereafter the respective limiting device 70 cannot be pushed further inward. In this way, the door 200 can be prevented from being violently unlocked and the limiting blocks 71 and the driver 72 of each limiting device 70 are forcibly torn apart.

Through the above description, the advantages of the present invention can be summarized as follows:

1. The present invention utilizes the locking devices 60 and the limiting devices 70 to cooperate with the design of the electromagnetic device 50 and the suction plate 11 , in addition to being able to absorb the suction plate 11 through the electromagnetic suction of the electromagnetic device 50 , more The buckles 12 can be buckled through the buckles 61 of the locking devices 60, thereby greatly increasing the locking force of the suction plate 11. Compared with the prior art, the present invention does not need to use a larger size specification. The electromagnetic device 50 can effectively improve the security of the portal.

2. In the present invention, after the door 200 is locked, the present invention utilizes the limiting portion 711 of the limiting block 71 of each limiting device 70 to be located between the electromagnetic field in the lateral direction X Between the electromagnetic body 51 of the device 50 and the locking portion 613 of the lock 61 of the respective lock device 60, the pivot portion 712 of the limit block 71 of each limit device 70 is slidably connected to the first side wall The design of the first oblong hole 321 of 32 and the second oblong hole 331 of the second side wall 33 can block the limit stop of each limit device 70 by the electromagnetic body 51 when an outsider tries to open the door violently. The limiting portion 711 of the 71 allows the limiting block 71 of each limiting device 70 in the limiting state to slide inwardly along the lateral direction X only to a limited extent, so not only can it effectively prevent each locking device The lock 61 of 60 is pushed open to the unlocking device by the external force, and can prevent the limit block 71 and the driver 72 of each limit device 70 from being torn apart by the external force, so that the limit of each limit device 70 is prevented. The block 71 can be designed with a lightweight structure, so that each limiting device 70 can use a driver 72 with a smaller size, thereby saving power.

3. In the present invention, before the door 200 is locked or unlocked, the control device 80 will control the electromagnetic device 50 to attract the adsorption plate 11 to prevent the door from being driven by an external force (such as wind) to link the adsorption plate 11, so that the buckles 12 located at both ends of the suction plate 11 will not mistakenly drive the buckles 61 of the locking devices 60 to lock the limit stops 71 of the limiting devices 70, so as to ensure the limit The limit stops 71 of the position device 70 can be smoothly changed between the release state and the limit state, so that the locks 61 of the lock devices 60 can be normally blocked by the limit blocks of the limit devices 70 Block 71 restrains or releases to smoothly lock or unlock the door 200 .

4. The lock 61 of the lock device 60 of the present invention utilizes the anti-collision pieces 63 to The outer contour of the locking portion 611 exceeds the locking body 64 and the outer contours of the anti-collision tabs 63 at the buffer portion 614 exceed the design of the locking body 64 , so that the buckles 12 can strike When the locking portions 611 of the locking buckles 61 of the locking devices 60 , or when the buffer portions 614 of the locking buckles 61 of the locking devices 60 hit the housing 30 , the material of the anti-collision pieces 63 is used. Reduce impact noise.

To sum up, the electromagnetic lock of the present invention can effectively improve the security of the portal, so it can indeed achieve the purpose of the present invention.

However, the above are only examples of the present invention, and should not limit the scope of the present invention. Any simple equivalent changes and modifications made according to the scope of the application for patent of the present invention and the content of the patent specification are still within the scope of the present invention. within the scope of the invention patent.

100: Electromagnetic lock

10: Card unit

11: Adsorption plate

111: Adsorption plane

12: Snap

20: Magnetic lock unit

30: Shell

31: End Wall

33: Second side wall

331: Second oblong hole

40: protective case

50: Electromagnetic device

51: Electromagnetic body

511: Magnetic plane

512: Install the back

516: Shaft hole

52: Coil

60: Locking device

61: lock

611: Locking part

612: Pivot part

613: Card Department

614: Buffer

62: Elastic element

70: Limiting device

71: Limit stop

711: Limiting part

712: Pivot part

713: Driven Department

72: Drive

721: valve body

722: Stem

723: Return spring

80: Control device

81: circuit board module

811: circuit board

812: Magnetic induction element

82: Trigger Module

821: Trigger pin

822: Magnetic Components

823: Compression spring

824: Front end

825: rear end

X: horizontal direction

Y: vertical direction

Z: height direction

200: Door

300: door frame

Claims (10)

An electromagnetic lock, suitable for being installed on a door and a door frame, the door can be changed between a door opening position and a door closing position relative to the door frame, the electromagnetic lock comprising: a clamping unit, suitable for being disposed on the door, and comprising an adsorption plate and at least one clip, the adsorption plate has an adsorption plane; and A magnetic lock unit, suitable for being installed on the door frame, and comprising an electromagnetic device, at least one locking device corresponding to the locking device, and at least one limiting device corresponding to the locking device, and the electromagnetic device is used for adsorption The suction plate has a magnetic suction plane. When the door is in the closed position, the suction plate faces the electromagnetic device, and the magnetic suction plane can be in contact with the suction plane. The lock device includes a lock. And an elastic element connected with the lock, the lock has a lock portion, the lock can be in a locked state where the lock portion blocks the lock and a lock portion releases the lock in an unlocked state When the door is in the closed position, the latch is in the locked state, and when the door is switched from the closed position to the open position, the latch drives the latch from the locked state to the open position. The unlocked state is changed, the elastic element has potential energy to drive the lock to change from the unlocked state to the locked state, the limiting device includes a limiting block, and a driver, the limiting block can be released after a release When the limit stop is in the release state, the limit stop does not restrict the lock from changing from the locked state to the unlocked state, when the limit stop is in the release state In the limiting state, the limiting block restricts the lock from changing from the locking state to the unlocking state, and the driver is used for driving the limiting block to change between the releasing state and the limiting state. The electromagnetic lock according to claim 1, wherein the magnetic lock unit further comprises a control device, the control device is electrically connected to the electromagnetic device and the driver, and is used for controlling whether the electromagnetic device generates electromagnetic attraction force, and for controlling Whether to drive the driver, when the door is in the closed position, the control device controls the electromagnetic device to generate electromagnetic attraction, so that the magnetic attraction plane attracts the attraction plane of the attraction plate, and the control device controls the driver to drive the limiter The stopper changes from the release state to the restriction state to lock the door, and when the door is about to change from the door closing position to the opening position, the control device controls the driver to drive the limit stopper from the restricting state After changing to the release state, the control device controls the electromagnetic device to stop generating the electromagnetic suction force, so that the electromagnetic device releases the suction plate to unlock the door. The electromagnetic lock according to claim 2, wherein the magnetic lock unit further comprises a casing suitable for being arranged on the door frame, the electromagnetic device is arranged on the casing, the locking device is arranged on the casing, and the limiting device is arranged on the casing On the casing, the control device is disposed on the casing. The electromagnetic lock according to claim 3, wherein the latch further has a pivot portion pivoted on the housing, and a locking portion, the elastic element abuts between the latch and the housing, the The pivoting portion is interposed between the locking portion and the locking portion. When the limiting block is in the release state, the limiting block does not limit the locking portion of the locking portion. In the restricting state, the limiting block restricts the locking portion of the lock. The electromagnetic lock of claim 4, wherein the housing has at least a first oblong hole extending in a lateral direction, and at least a second oblong hole opposite to the first oblong hole, and the limit stop has A limiting portion, a pivot portion slidably connected to the first oblong hole and the second oblong hole, and a driven portion between the limiting portion and the pivot portion, the driver has a valve body , a valve stem telescopically arranged on the valve body and connected with the driven part along the lateral direction, and a return spring arranged between the valve stem and the valve body, the return spring has the function of driving the valve stem The potential energy protruding outward along the lateral direction, when the limit block is in the release state, the limit part of the limit block does not block the locking part of the lock, when the limit block is in the release state In the limiting state, the limiting portion of the limiting block blocks the locking portion of the lock. The electromagnetic lock according to claim 5, wherein when the lock is in the locked state and the limit block is in the limit state, the limit part of the limit block is located between the limit block in the lateral direction Between the electromagnetic device and the locking portion of the lock, the locking portion of the lock is interposed between the limiting portion and the pivot portion of the limiting block in the lateral direction. The electromagnetic lock of claim 3, wherein the latching unit includes two latches disposed at both ends of the suction plate at intervals in a horizontal direction, and the suction plane is interposed between the latches in the lateral direction In between, the magnetic lock unit includes two locking devices corresponding to the buckles respectively, and two limiting devices corresponding to the locking devices respectively, and the locking devices are arranged at intervals in the horizontal direction. the housing, the limiting devices are arranged on the housing at intervals in the lateral direction, the electromagnetic device is interposed between the locking devices in the lateral direction, and between the limiting blocks of the limiting devices between. The electromagnetic lock of claim 3, wherein the electromagnetic device comprises an electromagnetic body and a coil wound around the electromagnetic body, the electromagnetic body has the magnetic attraction plane and a mounting back opposite to the magnetic attraction plane , and a shaft hole extending from the magnetic plane to the back of the installation along a longitudinal direction, the control device includes a circuit board module disposed on the back of the installation, and a trigger module, the circuit board module is electrically connected The electromagnetic device and the driver have a magnetic induction element, the trigger module has a trigger pin movably arranged in the shaft hole, a magnetic element arranged on the trigger pin and corresponding to the magnetic induction element, and a A compression spring abutting between the trigger pin and the circuit board module, the trigger pin has a front end portion and a rear end portion, the magnetic element is arranged at the rear end portion, and the trigger pin can be opposite to the electromagnetic The body moves between a non-triggered position and a triggering position. When the trigger pin is in the non-triggered position, the front end protrudes out of the magnetic attraction plane, and the magnetic element is far away from the magnetic induction element and does not trigger For the magnetic induction element, when the trigger pin is at the trigger position, the front end part retreats into the shaft hole, the magnetic element is adjacent to the magnetic induction element, and triggers the magnetic induction element, and the compression spring has the function of driving the trigger pin from the magnetic induction element. The potential energy of the trigger position moving toward the non-triggered position, when the door is in the open position, the trigger pin is in the non-triggered position, and when the door is in the door-closed position, the trigger pin is in the trigger position. The electromagnetic lock as claimed in claim 8, wherein the housing has at least one first fixing hole and at least one second fixing hole, and the electromagnetic body further has two connected between the magnetic attraction plane and the mounting back and located at the back. A side face opposite in the height direction, at least one first fixing column arranged on one side and corresponding to the first fixing hole, and at least one second fixing column arranged on the other side and corresponding to the second fixing hole a column, the first fixing column is inserted into the first fixing hole, and the second fixing column is inserted into the second fixing hole. The electromagnetic lock according to claim 4, wherein the lock includes two anti-collision pieces spaced apart from each other, and a lock main body sandwiched between the anti-collision pieces, and the lock also has a buffer portion, The outer contour of the anti-collision pieces at the lock portion exceeds the lock main body, and the outer contour of the anti-collision pieces at the buffer portion exceeds the lock main body. When the lock is in the locked state When the buffer is abutted against the housing to assist in limiting the lock in the locked state, and can reduce the impact of the lock against the housing when the lock is changed from the unlocked state to the locked state The impact noise is generated, and when the lock is in the unlocked state, the buffer part is disengaged from the casing.

Images