CN219826500U - Electromagnetic lock and locker - Google Patents

Abstract

The utility model provides an electromagnetic lock and a locker, and relates to the technical field of locks. The electromagnetic lock comprises a shell, a lock hook and a stop piece which are arranged in the shell, and an electromagnet, wherein the lock hook and the stop piece are both rotationally connected with the shell, the lock hook is provided with a locking position and an unlocking position, and the stop piece is provided with a first position and a second position; the electromagnet is used for driving the stop piece to rotate between a first position and a second position; when the lock hook is located at the locking position and the stop piece is located at the first position, the stop piece is meshed with the lock hook and prevents the lock hook from rotating to the unlocking position, the meshing position of the stop piece and the lock hook is configured to enable the lock hook to rotate to the unlocking position if external force acts, the acting force direction of the lock hook on the stop piece is directed to the rotation center of the stop piece or the stop piece has a trend of rotating along a set direction, and the set direction is the direction of the stop piece from the second position to the first position. The electromagnetic lock provided by the embodiment has good shockproof performance because the stop piece can always lock the position of the lock hook.

Description

Electromagnetic lock and locker

Technical Field

The utility model relates to the technical field of locks, in particular to an electromagnetic lock and a locker.

Background

Generally, the cabinet body of locker is equipped with the electromagnetic lock, and the cabinet door is equipped with the hasp, and when the cabinet door was closed, electromagnetic lock and hasp cooperation lock the position of cabinet door. In the prior art, the electromagnetic lock comprises a lock hook, a stop piece and an electromagnet in transmission connection with the stop piece, wherein the lock hook is provided with a locking position and an unlocking position, is in clamping fit with the lock catch when the lock hook is positioned at the locking position, the cabinet door is locked at the moment, and is separated from the lock catch when the lock hook is positioned at the unlocking position, and the cabinet door can be opened at the moment; the stop piece is provided with a first position and a second position, the lock hook is locked at the locking position when the stop piece is positioned at the first position, and the lock of the lock hook position is released when the stop piece is positioned at the second position; the electromagnet comprises a solenoid, an armature and a pressure spring, wherein the pressure spring is sleeved on the armature, the armature is in transmission connection with the stop piece, when the solenoid is powered off, the armature stretches out under the pressure action of the pressure spring, the stop piece is driven to be located at a first position, and when the solenoid is powered on, magnetic force is generated to attract the armature, so that the armature overcomes the pressure of the pressure spring to retract, and the armature drives the stop piece to be located at a second position. The electromagnetic lock is characterized in that the stop piece is positioned at the first position by means of pressure of the pressure spring, so that the lock hook is locked at the locking position, and once the cabinet door is shaken and pulled under high force, the lock hook is possibly separated from the stop piece when the cabinet door drives the lock hook to rotate towards the unlocking position with the lock catch, so that the stop piece rotates to the second position under the action of vibration or other external forces, and abnormal unlocking is caused. Therefore, the electromagnetic lock has poor vibration-proof performance.

Disclosure of Invention

The utility model aims to provide an electromagnetic lock and a locker with good shockproof performance.

Embodiments of the present utility model are implemented as follows:

in a first aspect, the utility model provides an electromagnetic lock, comprising a shell, a lock hook, a stop piece and an electromagnet, wherein the lock hook and the stop piece are installed in the shell, the lock hook and the stop piece are both rotationally connected with the shell, the lock hook is provided with a locking position and an unlocking position, and the stop piece is provided with a first position and a second position; the electromagnet is in transmission connection with the stop piece and is used for driving the stop piece to rotate between a first position and a second position; when the lock hook is positioned at the locking position and the stop piece is positioned at the first position, the stop piece is meshed with the lock hook and prevents the lock hook from rotating towards the unlocking position; when the locking member is located at the second position, the locking member can rotate to the unlocking position, when the locking member is located at the locking position and the locking member is located at the first position, the engagement position of the locking member and the locking member is configured to enable the locking member to rotate towards the unlocking position if external force acts, the acting force direction of the locking member on the locking member is directed to the rotation center of the locking member or the locking member has a trend of rotating along a set direction, and the set direction is the direction of the locking member from the second position to the first position.

Optionally, the stop member is in surface contact with the latch hook at the engagement position, and an included angle between any point on the engagement surface of the stop member and the latch hook and a connecting line of the rotation centers of the latch hook and the stop member is a right angle or an obtuse angle.

Optionally, the electromagnetic lock further includes a first limiting portion fixedly connected with the housing, and the first limiting portion is used for preventing the stop member located at the first position from rotating away from the first position along a set direction, wherein the set direction is a rotation direction when the stop member is turned from the second position to the first position.

Optionally, the electromagnetic lock further comprises a second limiting part and an elastic piece, the second limiting part is fixedly connected with the shell, and when the lock hook is positioned at the unlocking position, the lock hook is abutted with the second limiting part; the elastic piece is connected with the latch hook, and the elastic force of the elastic piece enables the latch hook to always have a tendency of rotating towards the unlocking position.

Optionally, the shell is provided with a first supporting shaft which is arranged at intervals with the second limiting part, and the latch hook is sleeved with the first supporting shaft; the elastic piece is a torsion spring and is sleeved with the first supporting shaft, the first torsion arm of the torsion spring is abutted with the second limiting part, and the second torsion arm of the torsion spring is abutted with the lock hook.

Optionally, a first support shaft and a second support shaft which are parallel and are arranged at intervals are arranged in the shell, the lock hook is sleeved with the first support shaft and can rotate around the first support shaft between a locking position and an unlocking position, and the lock hook is provided with a first occlusal surface; the locking piece is sleeved with the second supporting shaft and can rotate between a first position and a second position around the second supporting shaft, the locking piece is provided with a second meshing surface, the second meshing surface is an arc surface taking the second supporting shaft as a circle center, and when the locking hook is located at the locking position and the locking piece is located at the first position, the second meshing surface is abutted with the first meshing surface and prevents the locking hook from rotating towards the unlocking position.

Optionally, the latch hook is further provided with a first matching surface connected with the first engagement surface at an included angle, and the first matching surface is an arc surface taking the first supporting shaft as a circle center; the locking piece is also provided with a second matching surface which is connected with the second engagement surface in an included angle, and when the locking hook is positioned at the unlocking position and the locking piece is positioned at the second position, the first matching surface is matched with the second matching surface.

Optionally, when the latch hook is located at the locking position and the stopper is located at the first position, the size of the second engagement surface engaged with the first engagement surface is greater than or equal to 1.5mm along the set direction.

Optionally, the electromagnet comprises a pressure spring and a telescopic armature, the armature is provided with a long groove extending along the telescopic direction of the armature, and the stop piece is spliced with the long groove; the pressure spring is sleeved on the armature and used for enabling the armature to have a stretching movement trend all the time; when the electromagnet is powered on, the armature is positioned at the retracted position and drives the stop piece to rotate to the second position, and when the electromagnet is powered off, under the action of the pressure spring, the armature is positioned at the extended position and drives the stop piece to rotate to the first position.

In a second aspect, the utility model further provides a storage cabinet, which comprises a cabinet body, a cabinet door, a lock catch and the electromagnetic lock, wherein the cabinet body is provided with an opening, and the cabinet door is movably connected with the cabinet body and is used for closing or opening the opening; the lock catch is arranged on one of the cabinet door and the cabinet body, and the electromagnetic lock is arranged on the other of the cabinet door and the cabinet body; when the cabinet door is closed and opened, the lock hook of the electromagnetic lock is matched with the lock catch so as to lock the cabinet door at the position of closing and opening.

The beneficial effects of the utility model are as follows:

the embodiment of the utility model provides an electromagnetic lock, which comprises a shell, a lock hook and a stop piece, wherein the lock hook and the stop piece are arranged in the shell, the electromagnet is rotationally connected with the shell, the lock hook is provided with a locking position and an unlocking position, and the stop piece is provided with a first position and a second position; the electromagnet is in transmission connection with the stop piece and is used for driving the stop piece to rotate between a first position and a second position; when the lock hook is positioned at the locking position and the stop piece is positioned at the first position, the stop piece is meshed with the lock hook and prevents the lock hook from rotating towards the unlocking position; when the locking member is located at the second position, the locking member can rotate to the unlocking position, when the locking member is located at the locking position and the locking member is located at the first position, the engagement position of the locking member and the locking member is configured to enable the locking member to rotate towards the unlocking position if external force acts, the acting force direction of the locking member on the locking member is directed to the rotation center of the locking member or the locking member has a trend of rotating along a set direction, and the set direction is the direction of the locking member from the second position to the first position. Therefore, when the external force pulls the locking hook to collide with the stop piece, the direction of the force points to the rotation center of the stop piece or the stop piece has a trend of rotating along the set direction, and the set direction is the direction that the stop piece is turned from the second position to the first position, so that the stop piece can be prevented from being turned from the first position to the second position, and further the stop piece can be kept at the first position all the time, and after the external force is eliminated, the stop piece kept at the first position can reliably lock the locking hook at the locking position to avoid unexpected unlocking.

The utility model also provides a locker, which has the advantages of good shockproof performance and high reliability because the locker uses the electromagnetic lock.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a locker according to an embodiment of the present utility model;

fig. 2 is a schematic structural diagram of an electromagnetic lock of a locker according to an embodiment of the present utility model when the electromagnetic lock is matched with a lock catch;

FIG. 3 is a schematic diagram of a partial structure of an electromagnetic lock and a lock catch of a locker according to an embodiment of the present utility model;

FIG. 4 is an exploded view of an electromagnetic lock according to an embodiment of the present utility model;

fig. 5 is a schematic structural diagram of the locker according to the present embodiment when the latch hook of the electromagnetic lock of the locker is engaged with the latch;

fig. 6 is a schematic structural diagram of the electromagnetic lock of the locker according to the present utility model when the locking hook is separated from the lock catch;

fig. 7 is a partial enlarged view at III in fig. 5.

Icon:

010-storing cabinet; 100-electromagnetic lock; 200-locking; 020-cabinet body; 030-cabinet doors; 040-open; 101-latch hooks; 103-a housing; 105-stop; 107-an electromagnet; 109-opening; 111-open slots; 113-a first housing; 115-a second housing; 117-a first support shaft; 119-a second support shaft; 121-a through hole; 123-elastic member; 125-a first occlusal surface; 127-a second occlusal surface; 129-first mating face; 131-a second mating surface; 133-armature; 135-a compression spring; 137-elongated slots; 139-a first limit part; 141-a second limit part; 143-emergency pole; 145-ejector pins; 147-ejector rod spring; 149-micro switch.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present utility model, it should be noted that, the azimuth or positional relationship indicated by the terms "inner", "outer", etc. are based on the azimuth or positional relationship shown in the drawings, or the azimuth or positional relationship in which the inventive product is conventionally put in use, are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific azimuth, be configured and operated in a specific azimuth, and therefore, should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed", "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Fig. 1 is a schematic structural diagram of a locker 010 according to an embodiment of the present utility model, and fig. 2 is a schematic structural diagram of a locker 010 when an electromagnetic lock 100 of the locker 010 according to an embodiment of the present utility model is matched with a lock catch 200. As shown in fig. 1 and 2, the storage cabinet 010 comprises a cabinet body 020, a cabinet door 030, a lock catch 200 and an electromagnetic lock 100, wherein the cabinet body 020 is provided with an opening 040, the cabinet door 030 is movably connected with the cabinet body 020 and is used for closing or opening the opening 040, when the cabinet door 030 is opened with the opening 040, a user can place articles into the cabinet body 020 or take out articles in the cabinet body 020 through the opening 040, and when the cabinet door 030 is closed with the opening 040, the articles in the cabinet body 020 are isolated from the outside; the lock catch 200 is arranged on one of the cabinet door 030 and the cabinet body 020, the electromagnetic lock 100 is arranged on the other of the cabinet door 030 and the cabinet body 020, and when the cabinet door 030 closes the opening 040, the lock hook 101 of the electromagnetic lock 100 is matched with the lock catch 200 to lock the cabinet door 030 at the position of closing the opening 040, so that the safety of articles in the cabinet body 020 can be ensured; when the shackle 101 of the electromagnetic lock 100 is separated from the shackle 200, the cabinet door 030 may be opened. The electromagnetic lock 100 in this embodiment is mounted to the cabinet 020, and the lock catch 200 is mounted to the cabinet door 030.

Fig. 3 is a schematic diagram of a partial structure of an electromagnetic lock 100 of a locker 010 according to an embodiment of the present utility model when the electromagnetic lock 100 is matched with a lock catch 200; fig. 4 is an exploded view of the electromagnetic lock 100 according to the embodiment of the present utility model; fig. 5 is a schematic structural diagram of the electromagnetic lock 100 of the locker 010 according to the present embodiment when the lock hook 101 is matched with the lock catch 200; fig. 6 is a schematic structural diagram of the electromagnetic lock 100 of the locker 010 according to the present utility model when the locking hook 101 is separated from the lock catch 200. As shown in fig. 3 to 6, the electromagnetic lock 100 provided in the present embodiment includes a housing 103, a latch hook 101, a stopper 105 and an electromagnet 107 mounted in the housing 103, wherein the latch hook 101 and the stopper 105 are both rotatably connected with the housing 103, the latch hook 101 has a locking position and an unlocking position, and the stopper 105 has a first position and a second position; the electromagnet 107 is in driving connection with the stop member 105 for driving the stop member 105 to rotate between a first position and a second position; when the lock hook 101 is in the locking position and the stopper 105 is in the first position, the stopper 105 is engaged with the lock hook 101 and prevents the lock hook 101 from rotating toward the unlocking position; when the stopper 105 is located at the second position, the latch hook 101 can be rotated to the unlocking position. Wherein when the latch hook 101 is located at the locking position and the stopper 105 is located at the first position, the engagement position of the stopper 105 and the latch hook 101 is configured such that if the latch hook 101 is rotated toward the unlocking position by an external force, the direction of the force of the latch hook 101 to the stopper 105 is directed toward the rotation center of the stopper 105 or the stopper 105 has a tendency to rotate in a set direction, wherein the set direction is the direction in which the stopper 105 is turned from the second position to the first position. When the external force pulls the latch hook 101 to collide with the stopper 105, at the engagement position of the latch hook 101 and the stopper 105, the force of the latch hook 101 to the stopper 105 can prevent the stopper 105 from rotating from the first position to the second position, so that the stopper 105 can be always kept at the first position, and after the external force is eliminated, the stopper 105 kept at the first position can still reliably lock the latch hook 101 at the locking position, thereby avoiding abnormal unlocking.

Optionally, the housing 103 is provided with a notch 109, the latch hook 101 has an opening slot 111, as shown in fig. 6, when the latch hook 101 is located at the unlocking position, the opening of the opening slot 111 faces the notch 109, and when the cabinet door 030 is closed, the latch 200 may enter the opening slot 111 through the notch 109, when the latch hook 101 is located at the locking position, the opening direction of the opening slot 111 forms an included angle with the opening and closing direction of the cabinet door 030 (i.e., the moving direction of the latch 200), so that the latch 200 cannot be separated from the opening slot 111, thereby locking the position of the cabinet door 030, and when the latch hook 101 is located at the unlocking position, the latch 200 may be separated from the latch hook 101 through the opening of the opening slot 111, thereby the cabinet door 030 may be opened.

Optionally, the housing 103 includes a first housing 113 and a second housing 115, where the first housing 113 and the second housing 115 are fastened and connected to form an installation space therebetween, and the latch hook 101, the stopper 105, and the electromagnet 107 are located in the installation space, and the housing 103 can protect the latch hook 101, the stopper 105, and the electromagnet 10 from collision with other parts. Optionally, be equipped with parallel and the first back shaft 117 and the second back shaft 119 that the interval set up in the casing 103, the first end of first back shaft 117, the first end of second back shaft 119 all with first casing 103 fixed connection, the second end of first back shaft 117, the second end of second back shaft 119 all with second casing 103 butt, and the second end of first back shaft 117, the second end of second back shaft 119 all is equipped with the screw hole, be provided with through-hole 121 on the second casing 103 correspondingly, two fasteners pass through the screw hole threaded connection on through-hole 121 and first back shaft 117 and the second back shaft 119 respectively, so set up both realized the connection of first shell 113 and second shell 115, and the stability of installation space has been guaranteed again.

Alternatively, the latch hook 101 is sleeved with the first support shaft 117 and can rotate around the first support shaft 117 between a locking position and an unlocking position; the stopper 105 is coupled to the second support shaft 119 and is rotatable about the second support shaft 119 between a first position and a second position. The electromagnetic lock 100 further includes an elastic member 123, where the elastic member 123 is connected to the lock hook 101, and the elastic force of the elastic member 123 makes the lock hook 101 always have a tendency to rotate about the first supporting axis 117 toward the unlock position. In other embodiments, the center of gravity of the shackle 101 causes the shackle 101 to always have a tendency to rotate about the first support axis 117 toward the unlocked position. The arrangement is such that when the electromagnet 107 drives the stop 105 to rotate to the second position, the shackle 101 can rotate to the unlocked position under the action of the elastic member 123 or its own weight. Optionally, in this embodiment, the elastic member 123 is a torsion spring, the torsion spring is sleeved on the first supporting shaft 117, and a first torsion arm of the torsion spring is connected with the latch hook 101, and a second torsion arm is connected with the housing 103. In other embodiments, the elastic member 123 may be a tension spring or a compression spring, etc.

Optionally, the stopper 105 is in surface contact with the latch hook 101 at the engagement position, and an angle between any point on the engagement surface of the stopper 105 and the latch hook 101 and a line connecting rotation centers of the latch hook 101 and the stopper 105 is a right angle or an obtuse angle. Specifically, as shown in fig. 5 to 7, the latch hook 101 is sleeved on the first supporting shaft 117, the opening slot 111 is disposed at a first end of the latch hook 101, and a second end of the latch hook 101 is provided with a first engaging surface 125 for engaging with the stopper 105; the stopper 105 is sleeved on the second supporting shaft 119, a first end of the stopper 105 is in transmission connection with the armature 133 of the electromagnet 107, a second end of the stopper 105 is provided with a second engaging surface 127, when the latch hook 101 is located at the locking position and the stopper 105 is located at the first position, the second engaging surface 127 abuts against the first engaging surface 125 surface and prevents the latch hook 101 from rotating towards the unlocking position, wherein an included angle between any point (hereinafter referred to as an engaging point for convenience of description) of the second engaging surface 127 abutting against the first engaging surface 125 surface and a connecting line of rotation centers of the latch hook 101 and the stopper 105 is a right angle or an obtuse angle, for example, the engaging point, the first supporting shaft 117 and the second supporting shaft 119 are distributed in a triangle, a connecting line between the engaging point and the first supporting shaft 117 is a first connecting line, a connecting line between the engaging point and the second supporting shaft 119 is a second connecting line, and an included angle a between the first connecting line and the second connecting line is a right angle or an obtuse angle. The arrangement is such that when the latch hook 101 applies a force f to the latch 105 at the engagement position of both the latch 105 and the latch hook 101, the force f will be directed to the rotation center of the latch 105 when the angle a of the first and second wires is 90 degrees, and when the angle of the first and second wires is obtuse, the force f will be directed between the latch 105 and the latch hook 101, causing the latch 105 to have a tendency to rotate in a set direction in which the latch 105 is turned from the second position to the first position, and thus the latch 105 will not rotate from the first position to the second position, and thus the latch will not be separated from the latch hook 101 and remain in the first position engaged with the latch hook 101.

Optionally, when the latch hook 101 is located at the locking position and the stopper 105 is located at the first position, the dimension of engagement between the second engagement surface 127 and the first engagement surface 125 is greater than or equal to 1.5mm along the set direction. That is, if the stopper 105 is to be rotated from the first position to the second position, the minimum distance by which the first engaging surface 125 and the second engaging surface 127 slide relative to each other is 1.5mm, and in this embodiment, the size by which the first engaging surface 125 engages with the second engaging surface 127 is 2mm. In the electromagnetic lock 100 provided in this embodiment, the larger the size of the engagement between the stopper 105 and the lock hook 101, the more difficult the separation between the lock hook 101 and the stopper 105, and the better the shockproof effect, and meanwhile, on the premise of avoiding unexpected unlocking, the smaller the size of the engagement between the stopper 105 and the lock hook, the smaller the telescopic size of the armature 133 of the electromagnet 107 during unlocking, so that the cheaper electromagnet 107 can be selected, which is beneficial to reducing the cost of the electromagnetic lock 100.

Optionally, the electromagnet 107 further includes a compression spring 135, the armature 133 is provided with a long groove 137 extending along the extending direction, and the stopper 105 is inserted into the long groove 137; the pressure spring 135 is sleeved on the armature 133, and is used for enabling the armature 133 to have a stretching movement trend all the time; when the electromagnet 107 is powered on, the armature 133 is in the retracted position, driving the stop member 105 to rotate to the second position, and when the electromagnet 107 is powered off, the armature 133 is in the extended position under the action of the compression spring 135, driving the stop member 105 to rotate to the first position.

When the electromagnetic lock 100 in the embodiment is unlocked, the electromagnet 107 drives the stop member 105 to rotate to the second position, the lock hook 101 rotates to the unlocking position under the action of the elastic member 123 or the dead weight, and the cabinet door 030 can be opened; when the cabinet door 030 is closed, the cabinet door 030 moves towards the lock hook 101 with the lock catch 200, the lock catch 200 enters the opening groove 111 of the lock hook 101 from the notch 109 on the shell 103, the lock catch 200 drives the lock hook 101 to rotate to a locking position along with the continued closing of the cabinet door 030, the lock catch 101 is in clamping fit with the lock catch 200 to prevent the lock catch 200 from being separated from the lock hook 101, meanwhile, the stop piece 105 rotates to a first position under the action of the pressure spring 135 of the electromagnet 107, the stop piece 105 is meshed with the lock hook 101 to prevent the lock hook 101 from rotating towards an unlocking position, and the lock catch 200 cannot be separated from the lock hook 101, so that the cabinet door 030 cannot be opened due to locking.

When the lock hook 101 cooperates with the lock catch 200 to lock the position of the cabinet door 030, if an external force acts (for example, pulling the cabinet door 030 or knocking the cabinet door 030) to make the lock catch 200 drive the lock hook 101 to rotate toward the unlocking position, as shown in fig. 5 and 7, the lock hook 101 applies a force f to the lock catch 105 at the engagement position of both the lock catch 105 and the lock hook 101, the direction of the force f points to the rotation center of the lock catch 105 or makes the lock catch 105 have a tendency to rotate in a set direction, wherein the set direction is the direction in which the lock catch 105 is turned from the second position to the first position, and in either case, the lock catch 105 keeps the lock catch 101 in the locking position after the vibration is eliminated, so that the problem that the electromagnetic lock 100 is accidentally unlocked due to the vibration is avoided.

Optionally, the electromagnetic lock 100 further includes a first limiting portion 139 fixedly connected to the housing 103, where the first limiting portion 139 is configured to prevent the stop member 105 located at the first position from rotating away from the first position in a set direction, and the set direction is a rotation direction when the stop member 105 is turned from the second position to the first position. Optionally, the first limiting portion 139 is formed by bending the housing 103. In this embodiment, even if the vibration makes the locking hook 101 apply a great force to the stopper 105, the first limiting portion 139 makes the stopper 105 not leave the first position, so that the shockproof performance of the electromagnetic lock 100 is further improved, and the impact of the stopper 105 on the electromagnet 107 is also reduced, so that the service life of the electromagnet 107 is prolonged.

Optionally, as shown in fig. 6, the electromagnetic lock 100 further includes a second limiting portion 141, where the second limiting portion 141 is fixedly connected with the housing 103, when the lock hook 101 is located at the unlocking position, the lock hook 101 abuts against the second limiting portion 141, and the second limiting portion 141 stabilizes the position of the lock hook 101 when the lock hook 101 is located at the unlocking position, so that the lock hook 101 is in clamping engagement with the lock catch 200 when the cabinet door 030 is closed. In this embodiment, the elastic member 123 is a torsion spring, and is sleeved with the first supporting shaft 117, the first torsion arm of the torsion spring is abutted with the second limiting portion 141, and the second torsion arm of the torsion spring is abutted with the latch hook 101. Optionally, the second limiting portion 141 includes a third supporting shaft, the third supporting shaft is disposed at a distance parallel to the first supporting shaft 117, a first end of the third supporting shaft is fixedly connected with the first housing 103, a second end of the third supporting shaft is abutted to the second housing 103, a threaded hole is formed in the second end, a through hole 121 is correspondingly formed in the second housing 103, a fastener passes through the through hole 121 and is in threaded connection with the threaded hole on the third supporting shaft, and therefore the first housing 103 and the second housing 103 are fixedly connected through three fasteners, and the structure is more reliable.

Alternatively, the second engaging surface 127 is an arc surface centered on the second supporting shaft 119, and when the latch hook 101 is in the locking position and the stopper 105 is in the first position, the second engaging surface 127 abuts against the first engaging surface 125. Since the second engaging surface 127 is an arc surface with the second supporting shaft 119 at the center, and the first engaging surface 125 abuts against the second engaging surface 127, that is, the first engaging surface 125 is also an arc surface with the second supporting shaft 119 as the center, if the latch hook 101 rotates toward the unlock position under the action of an external force, the force f of the latch hook 101 to the latch 105 at each engaging point of the two points directs to the rotation center of the latch 105, so that the latch 105 is kept at the first position without shaking even if being impacted by the latch hook 101, and the shockproof performance of the electromagnetic lock 100 is further improved.

Optionally, the first end of the stopper 105 is provided with an emergency rod 143, and after the emergency rod 143 is inserted into the long groove 137 on the armature 133, the emergency rod 143 extends to the outside of the housing 103, and when the electromagnet 107 cannot drive the stopper 105 to rotate to the second position due to power failure, the emergency rod 143 can be pulled to rotate the stopper 105 to the second position, so that unlocking is achieved.

Optionally, the latch hook 101 is further provided with a first mating surface 129 connected to the first engaging surface 125 at an included angle, where the first mating surface 129 is an arc surface with the first supporting shaft 117 as a center of a circle; the stop member 105 is further provided with a second mating surface 131 connected to the second engaging surface 127 at an angle, and when the latch hook 101 is in the unlocked position and the stop member 105 is in the second position, the first mating surface 129 is in surface fit with the second mating surface 131. Since the first mating surface 129 is an arc surface with the first supporting shaft 117 as a center, when the latch hook 101 rotates from the unlocking position to the locking position, the first mating surface 129 rotates around the first supporting shaft 117 and slides and rubs against the second mating surface 131 of the stopper 105, so that the friction resistance of the latch hook 101 is small, and the latch hook 101 can smoothly rotate to the locking position.

Optionally, the electromagnetic lock 100 further includes a push rod 145 and a push rod spring 147, where the push rod 145 is slidably connected to the housing 103, and a first end of the push rod 145 extends out of the housing 103, and can abut against the first end of the push rod 145 when the cabinet door 030 is closed; the ejector rod spring 147 is connected between the housing 103 and the ejector rod 145, when the cabinet door 030 is closed, the ejector rod spring 147 enables the ejector rod 145 to be elastically abutted against the cabinet door 030, so that when the electromagnet 107 drives the stop piece 105 to rotate to the second position, the lock hook 101 rotates to the unlocking position under the action of the elastic piece 123, the ejector rod 145 pushes the cabinet door 030 outwards under the action of the ejector rod spring 147, and a user can conveniently open the cabinet door 030.

Optionally, the electromagnetic lock 100 further includes a detecting member for detecting the position of the stopper 105, and the electromagnet 107 may be controlled to be turned on or off according to the detection result of the detecting member. In this embodiment, the detecting member includes a micro switch 149, the micro switch 149 is fixedly mounted in the housing 103, when the stopper 105 is located at the first position, the stopper 105 is separated from the micro switch 149, the micro switch 149 outputs a first detecting signal, and when the stopper 105 is located at the second position, the stopper 105 cooperates with the micro switch 149 to trigger the micro switch 149 to output a second detecting signal.

The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (10)

1. An electromagnetic lock is characterized by comprising a shell, a lock hook, a stop piece and an electromagnet, wherein the lock hook and the stop piece are installed in the shell, the lock hook and the stop piece are both rotationally connected with the shell, the lock hook is provided with a locking position and an unlocking position, and the stop piece is provided with a first position and a second position; the electromagnet is in transmission connection with the stop piece and is used for driving the stop piece to rotate between the first position and the second position; when the lock hook is positioned at the locking position and the stop piece is positioned at the first position, the stop piece is meshed with the lock hook and prevents the lock hook from rotating towards the unlocking position; the lock hook is rotatable to the unlock position when the lock hook is located at the second position, and the engagement position of the lock hook and the lock hook is configured such that if an external force acts to rotate the lock hook to the unlock position, the direction of the force of the lock hook on the lock hook is directed to the rotation center of the lock hook or the lock hook has a tendency to rotate in a set direction, which is a direction in which the lock hook is turned from the second position to the first position, when the lock hook is located at the lock position and the lock hook is located at the first position.

2. The electromagnetic lock according to claim 1, wherein the stopper is in surface contact with the lock hook at an engagement position, and an angle between any point on the engagement surface of the stopper and the lock hook and a line connecting rotation centers of the lock hook and the stopper is a right angle or an obtuse angle.

3. The electromagnetic lock according to claim 1, further comprising a first stop fixedly coupled to the housing, the first stop being configured to prevent the stop in the first position from rotating in the set direction away from the first position.

4. The electromagnetic lock according to claim 1, further comprising a second limiting portion and an elastic member, wherein the second limiting portion is fixedly connected with the housing, and the lock hook abuts against the second limiting portion when the lock hook is located at the unlock position; the elastic piece is connected with the lock hook, and the elastic force of the elastic piece enables the lock hook to always have a tendency of rotating towards the unlocking position.

5. The electromagnetic lock according to claim 4, wherein a first supporting shaft is arranged in the shell at intervals with the second limiting part, and the lock hook is sleeved with the first supporting shaft; the elastic piece is a torsion spring and is sleeved with the first supporting shaft, a first torsion arm of the torsion spring is abutted with the second limiting part, and a second torsion arm of the torsion spring is abutted with the lock hook.

6. The electromagnetic lock according to claim 1, wherein a first support shaft and a second support shaft are arranged in parallel and at intervals in the housing, the lock hook is sleeved with the first support shaft and can rotate around the first support shaft between the locking position and the unlocking position, and the lock hook is provided with a first engagement surface; the locking piece is sleeved with the second supporting shaft and can rotate between the first position and the second position around the second supporting shaft, the locking piece is provided with a second meshing surface, the second meshing surface is an arc surface taking the second supporting shaft as a circle center, and when the locking hook is positioned at the locking position and the locking piece is positioned at the first position, the second meshing surface is abutted with the first meshing surface and prevents the locking hook from rotating towards the unlocking position.

7. The electromagnetic lock according to claim 6, wherein the lock hook is further provided with a first mating surface connected with the first engagement surface at an included angle, and the first mating surface is an arc surface with the first supporting shaft as a center of a circle; the locking piece is also provided with a second matching surface which is connected with the second engagement surface in an included angle, and when the locking hook is positioned at the unlocking position and the locking piece is positioned at the second position, the first matching surface is matched with the second matching surface.

8. The electromagnetic lock according to claim 6, wherein the dimension of engagement of the second engagement surface with the first engagement surface is not less than 1.5mm in the set direction when the shackle is in the locked position and the stopper is in the first position.

9. The electromagnetic lock according to claim 6, wherein the electromagnet comprises a compression spring and a telescopic armature, a long groove extending along the telescopic direction of the armature is formed in the armature, and the stop piece is spliced with the long groove; the pressure spring is sleeved on the armature and is used for enabling the armature to have a stretching movement trend all the time; when the electromagnet is powered on, the armature is positioned at the retracted position and drives the stop piece to rotate to the second position, and when the electromagnet is powered off, under the action of the pressure spring, the armature is positioned at the extended position and drives the stop piece to rotate to the first position.

10. A storage cabinet, characterized by comprising a cabinet body, a cabinet door, a lock catch and an electromagnetic lock according to any one of claims 1 to 9, wherein the cabinet body is provided with an opening, and the cabinet door is movably connected with the cabinet body and is used for closing or opening the opening; the lock catch is arranged on one of the cabinet door and the cabinet body, and the electromagnetic lock is arranged on the other of the cabinet door and the cabinet body; when the cabinet door seals the opening, the lock hook of the electromagnetic lock is matched with the lock catch so as to lock the cabinet door at the position for sealing the opening.