Electromagnetic lock with reserved emergency unlocking function

Abstract

The utility model provides an electromagnetic lock with a reserved emergency unlocking function, and relates to the technical field of electromagnetic locks. The electromagnetic lock with the reserved emergency unlocking function comprises a lock body, a microswitch is arranged on one side of the lock body, an emergency unlocking rod is arranged on the other side of the lock body, a connecting wire is arranged in the middle of the side, close to the emergency unlocking rod, of the lock body, and a spring bolt is rotationally connected to the side, close to the microswitch, of the lock body. Two sliding grooves are formed in the side, close to the spring bolt, of the lock body, connecting structures are arranged on the inner walls of the two sliding grooves, and rubber pads are arranged on the connecting structures. The connecting structure can drive the rubber pad to move in the depth direction of the sliding groove. According to the electromagnetic lock with the reserved emergency unlocking function, the lock hook collides with the rubber pad to conduct moving operation, the stress buffering effect is achieved, the effect of prolonging the service life of the electromagnetic lock is achieved, the limiting frame is driven to be separated from the stabilizing groove through continuous movement of the rubber pad, the closing limiting effect is achieved, and the effect of improving the using effect of the electromagnetic lock is achieved.

Description

Technical Field

[0001] The utility model relates to an electromagnetic lock with a reserved emergency unlocking function, belonging to the technical field of electromagnetic locks. Background Art

[0002] Electromagnetic locks use the principle of electromagnetism. When current passes through silicon steel sheets, the electromagnetic lock will generate a strong suction force to tightly absorb the adsorption iron plate to achieve the effect of locking the door. Nowadays, the application scope of electromagnetic locks is very wide. For example, electromagnetic locks are used in vending machines, display cabinets, storage cabinets, lockers, express cabinets and other lockers.

[0003] The existing electromagnetic lock includes a mounting base, a lock catch, a lock hook, a cam, a transmission assembly, an electromagnetic assembly, an iron core column and a micro switch. The lock catch, the cam, the transmission assembly, the electromagnetic assembly and the iron core column are all installed in the mounting base, the lock catch abuts against the cam, the transmission assembly is connected between the cam and the iron core column, and the iron core column is connected to the electromagnetic assembly. Taking a locker as an example, generally, the lock hook is suitable for being installed on the door of the locker, and the mounting base is suitable for being installed on the cabinet body of the locker. The electromagnetic lock is switched on and off by making the lock hook engage or separate with the cam in the mounting base, and an external force is applied to the lock hook to push it. The movable cam rotates counterclockwise, and the rotation of the cam drives the lock buckle to rotate counterclockwise. The cam rotates until it engages with the lock hook, and the lock buckle rotates clockwise again until it engages with the cam to fix the cam. At this time, the electromagnetic lock is in a locked state; when unlocking is required, the electromagnetic component is energized, and the electromagnetic component drives the iron core column to move in the direction of the electromagnetic component. Then the iron core column drives the lock buckle to rotate counterclockwise through the transmission component, so that the lock buckle is disengaged from the cam. The cam rotates clockwise under the action of the driving force, thereby separating the cam from the lock hook and driving the micro switch to push the cabinet door open. At this time, the electromagnetic lock is in an unlocked state.

[0004] Although the existing electromagnetic lock can be used in daily life, in actual use, since the lock tongue can only be closed by the lock hook hitting the lock tongue when closing the door, the impact force generated by the impact is completely applied to the lock body, which can easily damage the lock body over time, thereby shortening the service life of the electromagnetic lock. In addition, in order to make the lock hook close better, the lock hook should be designed to be longer so that the lock tongue can react immediately after the impact. This causes a certain gap between the lock hook and the lock tongue when closing, so that the cabinet door connected to the lock hook is easily blown by the wind on windy days and hits the cabinet connected to the lock body, causing noise and disturbing people, thereby making the use effect of the electromagnetic lock not good enough. Utility Model Content

[0005] 1. Technical issues to be solved

[0006] The utility model provides an electromagnetic lock with a reserved emergency unlocking function, so as to solve the problems in the prior art that the electromagnetic lock has a short service life and the use effect of the electromagnetic lock is not good enough.

[0007] (II) Technical solution

[0008] The utility model is realized by the following technical scheme: an electromagnetic lock with reserved emergency unlocking, comprising a lock body, a micro switch is arranged on one side of the lock body, an emergency unlocking rod is arranged on the other side of the lock body, a connecting wire is arranged in the middle of a side of the lock body close to the emergency unlocking rod, and a lock tongue is rotatably connected to a side of the lock body close to the micro switch;

[0009] The lock body is provided with two slide grooves on one side close to the lock tongue, and the inner walls of the two slide grooves are provided with connecting structures, and rubber pads are provided on the connecting structures; the connecting structure can move with the rubber pads in the depth direction of the slide groove to buffer the impact force when the lock is closed.

[0010] Preferably, the connection structure comprises two sliding plates, a spring is fixed to one end of the two sliding plates away from the locking tongue, a connecting rod is fixed to one end of the two sliding plates close to the locking tongue, and a rubber pad is fixed to the other end of the two connecting rods.

[0011] Preferably, the outer surfaces of the two sliding plates are slidably connected to the inner walls of the two sliding grooves, one end of the two springs is fixed to the inner wall of the two sliding grooves away from the end of the lock tongue, and the other end of the two springs is fixed to one end of the two sliding plates.

[0012] Preferably, one end of the two connecting rods is fixed to the middle of the two sliding plates, and the other ends of the two connecting rods are fixed to both ends of the rubber pads. The two connecting rods pass through the two sliding grooves near one end of the lock tongue, and the outer surface of the rubber pad is in contact with the outer surface of the lock tongue.

[0013] Preferably, a stabilizing groove is provided in the middle of the two connecting rods, and a limiting frame is provided on the inner walls of the two stabilizing grooves. The upper ends of the two limiting frames are rotatably connected to the middle of the two stabilizing frames.

[0014] Preferably, the upper ends of the two stabilizing frames are fixed on both sides of the lock body, the vertical sections of the two stabilizing frames are both U-shaped, and the middle parts of the upper ends of the two limiting frames are rotatably connected to the middle parts of the two stabilizing frames.

[0015] Preferably, outer surfaces of the two limit frames are in contact with the inner wall of the stabilizing groove, the limit frames are arranged in a V-shape with two sides having different lengths, and the cross-section of the stabilizing groove is arranged in a T-shape.

[0016] The utility model provides an electromagnetic lock with a reserved emergency unlocking function, which has the following beneficial effects:

[0017] (1) The electromagnetic lock with reserved emergency unlocking is moved by the lock hook hitting the rubber pad, so that the rubber pad, connecting rod, sliding plate, sliding groove and spring work together to achieve the effect of force buffering, and fully protect the lock body to avoid the impact force generated by the collision from acting on the lock body and causing damage to the lock body, thereby achieving the effect of extending the service life of the electromagnetic lock.

[0018] (2) The electromagnetic lock with a reserved emergency unlocking feature drives the limit frame to detach from the stable groove through the continuous movement of the rubber pad, so that the rubber pad, the limit frame, the connecting rod, the stable groove, and the stable frame cooperate with each other to achieve the effect of closing the limit, thereby avoiding the cabinet door connected to the lock hook and the cabinet connected to the lock body 1 from colliding with each other, causing noise disturbance to the public, thereby achieving the effect of improving the use effect of the electromagnetic lock. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional diagram of the utility model;

[0020] Figure 2 This is a cross-sectional view of the lock body of the utility model;

[0021] Figure 3 For this utility model Figure 2 A magnified view of the structure of part A;

[0022] Figure 4 This is a schematic diagram of the connecting rod structure of the utility model.

[0023]

Main component symbol description

[0024] 1. Lock body; 2. Micro switch; 3. Emergency unlocking rod; 4. Connecting wires; 5. Lock tongue; 6. Slide groove; 7. Slide plate; 8. Spring; 9. Connecting rod; 10. Rubber pad; 11. Stabilizing groove; 12. Limiting frame; 13. Stabilizing frame. DETAILED DESCRIPTION

[0025] The embodiment of the utility model provides an electromagnetic lock with a reserved emergency unlocking function.

[0026] See also Figure 1 , Figure 2 , Figure 3 and Figure 4, including a lock body 1, the lock body 1 is an electromagnetic lock body that uses the principle of electromagnetism. When current passes through the silicon steel sheet, the electromagnetic lock will generate a strong suction force to tightly absorb the adsorption iron plate to achieve the effect of locking the door. A micro switch 2 is arranged on one side of the lock body 1. The micro switch 2 can provide door opening feedback and push the door open when opening the door. An emergency unlocking rod 3 is arranged on the other side of the lock body 1. The emergency unlocking rod 3 can be pressed down in an emergency to drive the lock tongue 5 to open. It has been fully disclosed and will not be elaborated on here; the lock body 1 is close to the emergency unlocking rod 3 A connecting wire 4 is provided in the middle of one side, and the connecting wire 4 is used to connect to the power supply. A lock tongue 5 is rotatably connected to the side of the lock body 1 close to the micro switch 2, and the lock tongue 5 cooperates with the lock hook to realize the function of the switch; two sliding grooves 6 are provided on the side of the lock body 1 close to the lock tongue 5, and a connecting structure is provided on the inner walls of the two sliding grooves 6. The connecting structure includes two sliding plates 7, and springs 8 are fixed to the ends of the two sliding plates 7 away from the lock tongue 5. Connecting rods 9 are fixed to the ends of the two sliding plates 7 close to the lock tongue 5, and rubber pads 10 are fixed to the other ends of the two connecting rods 9.

[0027] Please refer again Figure 1 , Figure 2 , Figure 3 and Figure 4 It is worth specifying that the outer surfaces of the two sliding plates 7 are slidably connected to the inner walls of the two sliding grooves 6, one end of the two springs 8 is fixed to the inner wall of the two sliding grooves 6 away from the lock tongue 5, the other end of the two springs 8 is fixed to one end of the two sliding plates 7, one end of the two connecting rods 9 is fixed to the middle of the two sliding plates 7, the other end of the two connecting rods 9 is fixed to the two ends of the rubber pads 10, the two connecting rods 9 pass through the two sliding grooves 6 close to the lock tongue 5, and the outer surface of the rubber pad 10 is in contact with the outer surface of the lock tongue 5.

[0028] Please refer again Figure 1 , Figure 2 , Figure 3 and Figure 4 It is worth mentioning that a stabilizing groove 11 is provided in the middle of the two connecting rods 9, and a limiting frame 12 is provided on the inner walls of the two stabilizing grooves 11. The upper ends of the two limiting frames 12 are rotatably connected to the middle of the two stabilizing frames 13, and the upper ends of the two stabilizing frames 13 are fixed on both sides of the lock body 1. The vertical sections of the two stabilizing frames 13 are both U-shaped. The middle parts of the upper ends of the two limiting frames 12 are rotatably connected to the middle of the two stabilizing frames 13. The outer surfaces of the two limiting frames 12 are in contact with the inner walls of the stabilizing groove 11. The limiting frames 12 are V-shaped and the lengths of the two sides are different. The cross-section of the stabilizing groove 11 is T-shaped. When closed, the limiting frames 12 are separated from the stabilizing groove 11. When opened, due to the different lengths of the two sides of the limiting frames 12, the longer end will lean down and fall back into the stabilizing groove 11 of the connecting rod 9.

[0029] When the utility model is in use, first, the lock hook hits the rubber pad 10 to move, so that the rubber pad 10 drives the connecting rods 9 connected at both ends to move and drives the lock tongue 5 to rotate under the stability of the lock body 1. The two moving connecting rods 9 drive the two sliding plates 7 to slide on the inner walls of the two sliding grooves 6. The sliding sliding plates 7 compress the fixedly connected springs 8. The compressed springs 8 generate elastic support to buffer the impact force generated by the lock hook collision, thereby achieving the effect of force buffering, fully protecting the lock body 1, and preventing the impact force generated by the collision from acting on the lock body 1 and causing damage to the lock body 1. The service life of the electromagnetic lock is thereby extended, and as the lock hook is pushed, the rubber pad 10 and the lock tongue 5 continue to shift until the lock tongue 5 is closed, and then the limit frame 12 is driven to disengage from the stabilizing groove 11 through the continuous movement of the rubber pad 10, and rotates under the stability of the stabilizing frame 13, one end of the rotating limit frame 12 is stuck on the lock body 1, and the other end is stuck between the lock tongue 5 and the lock hook, and under the limitation of the lock tongue 5, the lock hook is firmly stuck here, completing the closing limit effect, avoiding the cabinet door connected to the lock hook from colliding with the cabinet connected to the lock body 1, causing noise disturbance, thereby achieving the effect of improving the use effect of the electromagnetic lock.

[0030] Working principle: The lock hook hits the rubber pad 10 to move, so that the connecting rod 9 connected to the rubber pad 10 drives the sliding plate 7 to compress the spring 8, thereby achieving the effect of force buffering, and fully protecting the lock body 1 to avoid the impact force generated by the collision from acting on the lock body 1 and causing damage to the lock body 1, thereby achieving the effect of extending the service life of the electromagnetic lock, and then the continuous movement of the rubber pad 10 drives the limit frame 12 to disengage from the stable groove 11, so that the limit frame 12 clamps the lock hook to achieve the effect of closing the limit, thereby avoiding the cabinet door connected to the lock hook and the cabinet connected to the lock body 1 from colliding, causing noise disturbance to the public, thereby achieving the effect of improving the use effect of the electromagnetic lock.

[0031] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. An electromagnetic lock with a reserved emergency unlocking function, comprising a lock body (1), characterized in that: A micro switch (2) is arranged on one side of the lock body (1), an emergency unlocking rod (3) is arranged on the other side of the lock body (1), a connecting wire (4) is arranged in the middle of a side of the lock body (1) close to the emergency unlocking rod (3), and a lock tongue (5) is rotatably connected to a side of the lock body (1) close to the micro switch (2); The lock body (1) is provided with two slide grooves (6) on one side close to the lock tongue (5), and the inner walls of the two slide grooves (6) are provided with connection structures, and the connection structures are provided with rubber pads (10); the connection structures can move with the rubber pads (10) in the depth direction of the slide grooves (6) to buffer the impact force when the lock is closed.

2. The electromagnetic lock with reserved emergency unlocking according to claim 1, characterized in that: The connection structure comprises two sliding plates (7), one end of the two sliding plates (7) away from the locking tongue (5) is fixed with a spring (8), one end of the two sliding plates (7) close to the locking tongue (5) is fixed with a connecting rod (9), and the other end of the two connecting rods (9) is fixed with a rubber pad (10).

3. The electromagnetic lock with reserved emergency unlocking according to claim 2, characterized in that: The outer surfaces of the two sliding plates (7) are slidably connected to the inner walls of the two sliding grooves (6), one end of the two springs (8) is fixed to the inner wall of the two sliding grooves (6) away from the lock tongue (5), and the other end of the two springs (8) is fixed to one end of the two sliding plates (7).

4. The electromagnetic lock with reserved emergency unlocking according to claim 2, characterized in that: One end of the two connecting rods (9) is fixed to the middle of the two sliding plates (7), and the other end of the two connecting rods (9) is fixed to the two ends of the rubber pad (10). The two connecting rods (9) pass through the two sliding grooves (6) near one end of the lock tongue (5), and the outer surface of the rubber pad (10) is in contact with the outer surface of the lock tongue (5).

5. The electromagnetic lock with reserved emergency unlocking according to claim 2, characterized in that: A stabilizing groove (11) is provided in the middle of the two connecting rods (9), and a limiting frame (12) is provided on the inner wall of the two stabilizing grooves (11). The upper ends of the two limiting frames (12) are rotatably connected to the middle of the two stabilizing frames (13).

6. The electromagnetic lock with reserved emergency unlocking according to claim 5, characterized in that: The upper ends of the two stabilizing frames (13) are fixed on both sides of the lock body (1), the vertical sections of the two stabilizing frames (13) are both U-shaped, and the middle parts of the upper ends of the two limiting frames (12) are rotatably connected to the middle parts of the two stabilizing frames (13).

7. The electromagnetic lock with reserved emergency unlocking according to claim 5, characterized in that: The outer surfaces of the two limiting frames (12) are in contact with the inner wall of the stable groove (11); the limiting frames (12) are arranged in a V-shape and the lengths of the two sides are different; and the cross section of the stable groove (11) is arranged in a T-shape.

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