Electromagnetic door lock safety device

Abstract

The utility model discloses an electromagnetic door lock safety device which comprises a transmission part, limiting devices are fixedly installed at the top end and the bottom end of the transmission part, an iron plate is connected to the side end of each limiting device in a sliding and sleeved mode, and each limiting device comprises a displacement plate, a first spring, a supporting cavity, a rack and a safety inserting rod. The first springs are symmetrically and fixedly installed in the supporting cavity, the displacement plate is fixedly installed at one ends of the first springs, the safety inserting rod slidably penetrates through the supporting cavity and is fixedly connected to the end, away from the first springs, of the displacement plate, and the rack is fixedly connected to the bottom end of the displacement plate. The transmission part comprises micro motors, gears, alignment guide rods, an electromagnetic lock and alignment devices, the alignment devices are symmetrically and fixedly installed at one end of the interior of the electromagnetic lock, and the micro motors are symmetrically and fixedly installed on one side of the electromagnetic lock. Through the arrangement of the limiting device and the transmission part, the purpose of tight connection of the door lock is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of door lock equipment, in particular to an electromagnetic door lock safety device. Background Art

[0002] The design of electromagnetic door lock is the same as that of electromagnet, which uses the principle of electromagnetism. When the 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. As long as the current is small, the electromagnetic lock will generate a huge magnetic force. The access control system that controls the power supply of the electromagnetic lock will cut off the power after identifying the correct person, and the electromagnetic lock will lose its suction and the door can be opened.

[0003] For example, a door lock with an intelligent anti-theft lock safety device with Chinese patent publication number CN205277079U includes a door lock body and a mechanical electromagnetic control safety device. A locking hole is provided at a corresponding position on the linkage mechanism of the door lock body. The mechanical electromagnetic control safety device includes a latch, a locking spring, a transmission connecting rod, a bracket, an iron block, an electromagnet, an electronic control device and an outdoor switch. The latch corresponds to the locking hole of the linkage mechanism of the door lock body, the transmission connecting rod is assembled on the bracket, the position of the electromagnet corresponds to the iron block, and the locking spring is connected to the latch.

[0004] The electromagnetic door lock in the above patent can only realize multi-function control when in use, while the existing electromagnetic door lock cannot effectively guarantee the tightness of the fit between the door locks due to the use of electromagnetic adsorption when in use. Therefore, a device is needed to improve the above problem. Utility Model Content

[0005] The purpose of the utility model is to provide an electromagnetic door lock safety device to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an electromagnetic door lock safety device, comprising a transmission component, wherein a limiting device is fixedly installed at the top and bottom ends of the transmission component, and an iron plate is slidably sleeved on the side end of the limiting device, and the limiting device comprises a displacement plate, a first spring, a support cavity, a rack and a safety rod, the first spring is symmetrically fixedly installed inside the support cavity, the displacement plate is fixedly installed on one end of the first spring, the safety rod slides through the support cavity and is fixedly connected to the end of the displacement plate away from the first spring, and the rack is fixedly connected to the bottom end of the displacement plate.

[0007] Preferably, the transmission component includes a micro motor, a gear, an alignment guide rod, an electromagnetic lock and an alignment device, the alignment device is symmetrically fixedly installed at one end inside the electromagnetic lock, the micro motor is symmetrically fixedly installed on one side of the electromagnetic lock, the gear is fixedly installed at the side end center of the micro motor, and the alignment guide rod is slidably inserted on the other side of the electromagnetic lock.

[0008] Preferably, the alignment device includes a supporting cross frame, a supporting sleeve, a limiting rod, a second spring, a movable round rod and a connecting rope, the second spring is fixedly installed at the inner bottom end of the supporting sleeve, the limiting rod slides through the supporting sleeve and is connected to the top end of the second spring, the movable round rod slides through the supporting sleeve and is connected to the bottom end of the limiting rod, the connecting rope is fixedly connected to the bottom end of the movable round rod, and the supporting cross frame is fixedly connected to the bottom end of the connecting rope.

[0009] Preferably, the support cavity is fixedly mounted on the top and bottom ends of the electromagnetic lock, and the support sleeve is symmetrically fixedly connected to an inner end of the electromagnetic lock away from the micro motor.

[0010] Preferably, a circular hole is provided at the center of the bottom end of the displacement plate, and a 45° slope is provided at the side end of the circular hole close to the safety plug rod.

[0011] Preferably, the connecting rope is vertically aligned with the alignment guide rod, and the top and bottom of the side end of the iron plate close to the transmission component are provided with insertion holes.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0013] When the device is in use, the micro motor can drive the gear to rotate at the bottom end of the rack when it is started, so that the safety plug rod can be inserted into the plug hole inside the side end of the iron plate close to the transmission component, thereby preventing the electromagnetic lock from being misaligned with the iron plate. At the same time, when the safety plug rod moves to the extreme position, it can drive the displacement plate to contact the limiting plug rod, thereby preventing the safety plug rod from resetting to the rear end, and by pressing the alignment guide rod to contact the connecting rope, the limiting plug rod can be driven to move downward, thereby unlocking the limiting plug rod, facilitating the resetting of the safety plug rod, and completing the work of contacting and locking the safety plug rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the main structure of the utility model;

[0015] Figure 2 It is a partial cutaway schematic diagram of the restriction device of the utility model;

[0016] Figure 3 It is a partial cutaway schematic diagram of the transmission component of the utility model;

[0017] Figure 4 It is a partial cutaway schematic diagram of the alignment device of the utility model.

[0018] In the figure: 1-limiting device, 2-transmission component, 3-iron plate, 4-displacement plate, 5-first spring, 6-support cavity, 7-rack, 8-safety plug rod, 9-micro motor, 10-gear, 11-alignment guide rod, 12-electromagnetic lock, 13-alignment device, 14-support cross frame, 15-support sleeve, 16-limiting plug rod, 17-second spring, 18-movable round rod, 19-connecting rope. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-4 The utility model provides an embodiment: an electromagnetic door lock safety device, including a transmission component 2, a limiting device 1 is fixedly installed on the top and bottom ends of the transmission component 2, and an iron plate 3 is slidably sleeved on the side end of the limiting device 1. The limiting device 1 includes a displacement plate 4, a first spring 5, a support cavity 6, a rack 7 and a safety plug 8. The first spring 5 is symmetrically fixedly installed inside the support cavity 6, the displacement plate 4 is fixedly installed on one end of the first spring 5, the safety plug 8 slides through the support cavity 6 and is fixedly connected to the end of the displacement plate 4 away from the first spring 5, and the rack 7 is fixedly connected to the bottom end of the displacement plate 4.

[0021] The transmission component 2 includes a micro motor 9, a gear 10, an alignment guide rod 11, an electromagnetic lock 12 and an alignment device 13. The alignment device 13 is symmetrically fixedly installed at one end of the inside of the electromagnetic lock 12. The micro motor 9 is symmetrically fixedly installed on one side of the electromagnetic lock 12. The gear 10 is fixedly installed at the center of the side end of the micro motor 9. The alignment guide rod 11 is slidably inserted on the other side of the electromagnetic lock 12. When the micro motor 9 is powered off, the gear 10 will lose the driving force, so that the first spring 5 can drive the safety plug 8 to reset.

[0022] The alignment device 13 includes a supporting cross frame 14, a supporting sleeve 15, a limiting rod 16, a second spring 17, a movable round rod 18 and a connecting rope 19. The second spring 17 is fixedly installed at the inner bottom end of the supporting sleeve 15. The limiting rod 16 slides through the supporting sleeve 15 and is connected to the top of the second spring 17. The movable round rod 18 slides through the supporting sleeve 15 and is connected to the bottom end of the limiting rod 16. The connecting rope 19 is fixedly connected to the bottom end of the movable round rod 18. The supporting cross frame 14 is fixedly connected to the bottom end of the connecting rope 19. A sliding hole matched with the movable round rod 18 is opened through the center of the bottom end of the supporting sleeve 15, so that the movable round rod 18 can be allowed to pass through the bottom end of the supporting sleeve 15.

[0023] The support cavity 6 is fixedly installed at the top and bottom ends of the electromagnetic lock 12, and the support sleeve 15 is symmetrically fixedly connected to the inner end of the electromagnetic lock 12 away from the micro motor 9, which can support the support sleeve 15 to work.

[0024] A circular hole is provided at the center of the bottom end of the displacement plate 4 , and a 45° slope is provided at the side end of the circular hole close to the safety plug rod 8 , so as to improve the smoothness of the displacement plate 4 when passing through the limiting plug rod 16 .

[0025] The connecting rope 19 is vertically aligned with the alignment guide rod 11 , and the top and bottom of the side end of the iron plate 3 close to the transmission component 2 are provided with insertion holes to facilitate the insertion of the safety plug rod 8 into the interior of the iron plate 3 .

[0026] Working principle: When the device is in use, the iron plate 3 is first installed on the door frame, and the electromagnetic lock 12 is installed on the door. When the door is in a closed state, the electromagnetic lock 12 can be started, so that the iron plate 3 can be adsorbed to complete the door locking work. At the same time, the micro motor 9 can be started at the same time, so that the gear 10 can be driven to rotate, and the rack 7 is meshed with the gear 10, so that when the gear 10 rotates, it can drive the rack 7 to move, and the displacement plate 4 is fixedly connected to the top of the rack 7, so that when the rack 7 moves, it can drive the displacement plate 4 and the safety plug 8 to move away from the first One end of the spring 5 moves until the safety plug rod 8 penetrates the supporting cavity 6 and moves into the plug hole inside the iron plate 3, thereby preventing the door from losing the locking ability when the electromagnetic lock 12 is powered off. At the same time, when the safety plug rod 8 moves to the limit position, it can drive the circular hole at the bottom of the displacement plate 4 to be vertically aligned with the limiting plug rod 16, and a 45° slope is provided at the bottom of the side end of the displacement plate 4 close to the safety plug rod 8, and the slope is aligned with the limiting plug rod 16, so that the contact smoothness between the limiting plug rod 16 and the displacement plate 4 can be improved. When the circular hole at the bottom of the displacement plate 4 is aligned with the limiting plug rod 16, the contact between the limiting plug rod 16 and the displacement plate 4 is smooth. 6 is vertically aligned, the elasticity of the second spring 17 drives the limiting rod 16 to slide and be inserted into the circular hole at the bottom of the displacement plate 4, so that the limiting rod 16 can limit the displacement plate 4 to prevent the safety rod 8 from resetting when the micro motor 9 and the electromagnetic lock 12 are powered off. Afterwards, when the safety rod 8 needs to be unlocked, the alignment guide rod 11 can be pressed toward the inside of the electromagnetic lock 12, so that the alignment guide rod 11 can squeeze the connecting rope 19 to bend, so that the connecting rope 19 can pull the movable round rod 18 and the limiting rod 16 to slide downward at the same time until the limiting rod 16 is released from the bottom of the displacement plate 4. The safety plug 8 is moved out of the circular hole at the end. At this time, the elasticity of the first spring 5 will drive the safety plug 8 to reset quickly, so that the safety plug 8 can be moved out of the socket inside the iron plate 3. After that, the electromagnetic lock 12 is powered off, so that the iron plate 3 and the electromagnetic lock 12 lose attraction, which is convenient for opening the door. In addition, when the alignment guide rod 11 is released, the elasticity of the second spring 17 will drive the connecting rope 19 to reset. When the connecting rope 19 is reset, it can drive the alignment guide rod 11 to reset outward at the same time, so that when the alignment guide rod 11 is pressed again, the connecting rope 19 is driven to bend, and the work is completed.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An electromagnetic door lock safety device, comprising a transmission component (2), wherein a limiting device (1) is fixedly mounted at the top and bottom ends of the transmission component (2), and an iron plate (3) is slidably sleeved on the side end of the limiting device (1), characterized in that: The limiting device (1) comprises a displacement plate (4), a first spring (5), a support cavity (6), a rack (7) and a safety plug (8); the first spring (5) is symmetrically fixedly mounted inside the support cavity (6); the displacement plate (4) is fixedly mounted on one end of the first spring (5); the safety plug (8) slides through the support cavity (6) and is fixedly connected to one end of the displacement plate (4) away from the first spring (5); and the rack (7) is fixedly connected to the bottom end of the displacement plate (4).

2. The electromagnetic door lock safety device according to claim 1, characterized in that: The transmission component (2) comprises a micro motor (9), a gear (10), an alignment guide rod (11), an electromagnetic lock (12) and an alignment device (13); the alignment device (13) is symmetrically fixedly mounted on one end of the interior of the electromagnetic lock (12); the micro motor (9) is symmetrically fixedly mounted on one side of the electromagnetic lock (12); the gear (10) is fixedly mounted at the center of the side end of the micro motor (9); and the alignment guide rod (11) is slidably inserted on the other side of the electromagnetic lock (12).

3. The electromagnetic door lock safety device according to claim 2, characterized in that: The alignment device (13) comprises a supporting cross frame (14), a supporting sleeve (15), a limiting rod (16), a second spring (17), a movable round rod (18) and a connecting rope (19); the second spring (17) is fixedly mounted on the inner bottom end of the supporting sleeve (15); the limiting rod (16) slides through the supporting sleeve (15) and is connected to the top end of the second spring (17); the movable round rod (18) slides through the supporting sleeve (15) and is connected to the bottom end of the limiting rod (16); the connecting rope (19) is fixedly connected to the bottom end of the movable round rod (18); and the supporting cross frame (14) is fixedly connected to the bottom end of the connecting rope (19).

4. The electromagnetic door lock safety device according to claim 3, characterized in that: The support cavity (6) is fixedly mounted at the top and bottom ends of the electromagnetic lock (12), and the support sleeve (15) is symmetrically fixedly connected to an inner end of the electromagnetic lock (12) away from the micro motor (9).

5. The electromagnetic door lock safety device according to claim 4, characterized in that: A circular hole is provided at the center of the bottom end of the displacement plate (4), and a 45° slope is provided at the side end of the circular hole close to the safety plug rod (8).

6. The electromagnetic door lock safety device according to claim 5, characterized in that: The connecting rope (19) is vertically aligned with the alignment guide rod (11), and the top and bottom of the side end of the iron plate (3) close to the transmission component (2) are both provided with insertion holes.

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