Explosion-proof magnetic lock

Abstract

The utility model discloses an anti-explosion magnetic lock, and belongs to the technical field of magnetic locks. Comprising an anti-explosion shell, a metal plate and an access control card reader, an electromagnet is arranged on the outer wall of the front portion of the anti-explosion shell, a fire sensor is arranged on the inner wall of the anti-explosion shell, and a control element electrically connected with the access control card reader is arranged at the top of a mounting plate. The wave rubber strip is arranged in the anti-explosion shell, so that the wave rubber strip is better attached to the sealed surface, the sealing effect is improved, a silica gel drying plate is arranged in the mounting plate, accumulation of moisture in the anti-explosion shell can be reduced, the corrosion and short circuit conditions of control elements are reduced, a fire sensor is further arranged in the anti-explosion shell, temperature changes in the anti-explosion shell can be monitored, and the anti-explosion effect is improved. Once the temperature rises abnormally, the alarm can be triggered to inform related personnel to process in time, and the adsorption area can be cleaned more conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of magnetic locks, and more specifically to an explosion-proof magnetic lock. Background Art

[0002] A magnetic lock is a security device that uses the electromagnetic principle to generate attraction to lock doors or other devices. It is also called an electromagnetic door lock, an electromagnetic suction lock, etc. A magnetic lock is usually composed of an electromagnet, a lock body, and a control system. Magnetic locks are usually used in situations that require higher security and sealing, such as anti-theft doors, security doors, etc. It has the characteristics of simple structure, easy use, safety and reliability, and is widely used in access control systems, security systems and other fields.

[0003] The existing magnetic locks still have the following problems: the sealing of the existing magnetic locks is not ideal. When used in a relatively humid environment, moisture often accumulates inside, resulting in circuit short circuits, corrosion and other problems. In addition, magnetic locks are used in certain specific occasions, such as chemical plants, oil and gas fields, coal mines, etc., where there are explosive and dangerous environments such as flammable gases, dust or steam. If the electromagnetic lock circuit generates sparks due to a short circuit, and these flammable gases enter the interior, it is very easy to cause an explosion. In addition, when the internal circuit of the existing magnetic lock is short-circuited and high temperature occurs, it is difficult for personnel to discover it in time, which brings great trouble to the use;

[0004] Moreover, when the magnetic lock is used in dusty or dusty places, dust, debris and oil are easily accumulated in the adsorption area of ​​the magnetic lock. These dust, debris and oil will affect the adsorption effect of the magnetic lock, causing the magnetic force to weaken, affecting the stability of the lock, and also increasing the failure rate of the magnetic lock, causing it to fail to work properly or abnormal situations, bringing many inconveniences to use.

[0005] In view of this, we propose explosion-proof magnetic locks. Utility Model Content

[0006] 1. Technical issues to be solved

[0007] The purpose of the utility model is to provide an explosion-proof magnetic lock to solve the problems raised in the above background technology.

[0008] 2. Technical solution

[0009] An explosion-proof magnetic lock comprises an explosion-proof shell, a metal plate and an access control card reader, wherein an alarm is arranged on the top of the access control card reader, movable grooves are provided on the outer walls on both sides of the explosion-proof shell, a plurality of reset springs are arranged at the bottom of the inner cavities of the movable grooves, a cleaning component is connected to the end of the reset spring, and the cleaning component comprises a movable guide rod, an electromagnet is arranged on the front outer wall of the explosion-proof shell, a fire sensor is arranged on the inner wall of the explosion-proof shell, the fire sensor, the alarm and a control element are electrically connected in series, a sealing bottom plate is fixedly installed on the top of the explosion-proof shell by screws, a mounting plate is arranged on the top of the sealing bottom plate, a control element electrically connected to the access control card reader is arranged on the top of the mounting plate, and the control element is electrically connected to the electromagnet.

[0010] Preferably, baffles are provided on both sides of the inner walls of the plurality of movable grooves, and the plurality of baffles are flush with the side walls of the explosion-proof housing.

[0011] Preferably, the plurality of movable guide rods are respectively matched with the gaps between the plurality of baffles, and the side walls of the plurality of movable guide rods are rotatably connected with a rotating rod.

[0012] Preferably, a connecting plate is connected between the plurality of movable guide rods, and a cleaning soft cloth is adhered to the front and rear outer walls of the connecting plate by using magic stickers.

[0013] Preferably, trapezoidal plates are provided on the outer walls on both sides of the metal plate, a handle is provided on the front outer wall of the metal plate, and the explosion-proof housing and the metal plate are both T-shaped.

[0014] Preferably, the four outer walls of the mounting plate are provided with corrugated rubber strips, a silica gel drying plate is clamped inside the mounting plate, and a fixing net is provided on the top of the mounting plate, and the fixing net is made of metal.

[0015] 3. Beneficial effects

[0016] Compared with the prior art, the utility model has the following advantages: during the installation of the electromagnetic lock, the sealing bottom plate carrying the mounting plate can be fixed to the bottom of the explosion-proof housing by screws; during the installation and clamping process, the design of the corrugated rubber strip can be used to increase the contact area, so that the corrugated rubber strip fits the sealed surface more closely, thereby improving the sealing effect and reducing the entry of external flammable gas and moisture into the explosion-proof housing; a silica gel drying plate is arranged inside the mounting plate, which can reduce the accumulation of moisture inside the explosion-proof housing, reduce the corrosion and short circuit of the control components; a fire sensor is also arranged inside the explosion-proof housing, which can monitor the temperature change inside the explosion-proof housing; once the temperature rises abnormally, an alarm will be triggered, and relevant personnel will be notified in time to handle the problem, thereby better improving the safety of use;

[0017] During the use of the electromagnetic lock, whenever the electromagnetic lock is closed, the trapezoidal plates on both sides of the metal plate will press against the rotating rod. At this time, the rotating rod will drive the movable guide rod to move down due to the pressure of the trapezoidal plates, and use multiple clean soft cloths to clean its adsorption area. Secondly, when opening, due to the removal of the trapezoidal plates, the reset spring will drive the movable guide rod to rebound and return to its initial position. The whole cleaning process is simpler and more convenient. The cleaning of the adsorption area is completed during the process of opening and closing the door to prevent dust, debris, and oil from affecting the adsorption effect of the magnetic lock. There is no need for manual cleaning by personnel, which improves its cleaning efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the mobile slot of the utility model;

[0020] Figure 3 This is a schematic diagram of the overall structure of the cleaning component of the utility model;

[0021] Figure 4 This is a schematic diagram of the internal structure of the explosion-proof housing of the utility model;

[0022] Explanation of the numbers in the figure: 100, explosion-proof housing; 110, electromagnet; 120, moving groove; 121, baffle; 122, reset spring; 130, fire sensor; 200, moving guide rod; 210, rotating rod; 220, connecting plate; 230, cleaning soft cloth; 300, sealing bottom plate; 310, mounting plate; 320, corrugated rubber strip; 330, silica gel drying plate; 340, fixing net; 350, control element; 400, metal magnetic plate; 410, ladder plate; 420, handle; 500, access control card reader; 510, alarm. DETAILED DESCRIPTION

[0023] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0024] In the description of the present invention, "plurality" means two or more than two, unless otherwise clearly and specifically defined.

[0025] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0026] Please refer to the figure, the utility model provides a technical solution:

[0027] The explosion-proof magnetic lock includes an explosion-proof housing 100, a metal plate 400 and an access control card reader 500. An alarm 510 is arranged on the top of the access control card reader 500. The alarm 510 and the access control card reader 500 belong to the prior art and can use common models on the market. Secondly, the alarm light 510 can use a sound alarm light. The outer walls on both sides of the explosion-proof housing 100 are provided with movable grooves 120, and the bottom of the inner cavity of the plurality of movable grooves 120 is provided with a return spring 122;

[0028] It is convenient to rebound the movable guide rod 200 and to perform cyclic cleaning on the adsorption area of ​​the magnetic lock;

[0029] The end of the return spring 122 is connected to a cleaning assembly, which includes a movable guide rod 200. The front outer wall of the explosion-proof housing 100 is provided with an electromagnet 110, and the inner wall of the explosion-proof housing 100 is provided with a fire sensor 130. The fire sensor 130, the alarm 510 and the control element 350 are electrically connected in series.

[0030] In some embodiments: the fire sensor 130 is a prior art. The principle of the fire sensor 130 is to determine whether a fire occurs by monitoring the temperature changes of the surrounding environment. A temperature sensor can be used. When the temperature inside the explosion-proof housing 100 passes through a certain threshold, the data can be transmitted to the inside of the control element 350. Then the control element 350 will control the alarm 510 to warn people, thereby improving the safety of its use.

[0031] In some embodiments: the control element 350 includes a power supply, a controller and a protection device, wherein the power supply can use a common type of battery, which can be charged for use. The controller is the core component for controlling the on and off of the electromagnetic lock, usually a microprocessor or a dedicated access control controller. The controller controls the switch of the electromagnetic lock by receiving a signal from the access control card reader 500. In order to protect the electromagnetic lock and the control system, overvoltage protection, overcurrent protection, temperature protection and other devices are usually added to the system to ensure the safe and reliable operation of the system. In specific use, when the access control controller 500 receives an unlocking signal, it will send a signal to the controller. After receiving the signal, the controller will apply voltage to the electromagnet 110, so that the electromagnet 110 is energized, thereby generating a magnetic field to attract the metal plate 400 and close the door lock. For the same reason, when the lock needs to be unlocked, the controller will cut off the power supply of the electromagnet 110, so that the electromagnet 110 loses its magnetism and the door lock opens. The interior of the electromagnet 110 is composed of a winding and an iron core. When the winding is energized, a magnetic field is generated, which makes the iron core attractive.

[0032] A sealing bottom plate 300 is fixedly mounted on the top of the explosion-proof housing 100 by screws. A mounting plate 310 is arranged on the top of the sealing bottom plate 300. A control element 350 electrically connected to the access control card reader 500 is arranged on the top of the mounting plate 310. The control element 350 is electrically connected to the electromagnet 110.

[0033] In some embodiments, the explosion-proof housing 100 is made of aluminum alloy.

[0034] Specifically, baffles 121 are provided on both sides of the inner walls of the plurality of movable grooves 120 , and the plurality of baffles 121 are flush with the side walls of the explosion-proof housing 100 , so as to facilitate the limiting of the internal reset springs 122 .

[0035] Furthermore, the multiple movable guide rods 200 are respectively matched with the gaps between the multiple baffles 121, and the side walls of the multiple movable guide rods 200 are rotatably connected with the rotating rods 210, so as to facilitate the guiding of the movable guide rods 200.

[0036] Furthermore, a connecting plate 220 is connected between the plurality of movable guide rods 200 , and a cleaning soft cloth 230 is adhered to the front and rear outer walls of the connecting plate 220 by means of magic stickers, so as to facilitate cleaning of dirt on the surface of the adsorption area.

[0037] Furthermore, trapezoidal plates 410 are provided on the outer walls on both sides of the metal plate 400, and a handle 420 is provided on the front outer wall of the metal plate 400. The explosion-proof housing 100 and the metal plate 400 are both T-shaped, which makes it easier to press and move the cleaning component.

[0038] It is worth mentioning that corrugated rubber strips 320 are provided on the four outer walls of the mounting plate 310, a silica gel drying plate 330 is clamped inside the mounting plate 310, and a fixed net 340 is provided on the top of the mounting plate 310. The fixed net 340 is made of metal to facilitate dehumidification of the interior and avoid damage to the controller component 350 caused by moisture.

[0039] In addition, the circuits, electronic components and modules involved in the utility model are all existing technologies and can be fully implemented by those skilled in the art. Needless to say, the content protected by the utility model does not involve improvements to the internal structure and methods.

[0040] Working principle: First, during the installation of the electromagnetic lock, the sealing bottom plate 300 carrying the mounting plate 310 can be fixed to the bottom of the explosion-proof housing 100 by screws. During the installation and clamping process, the design of the corrugated rubber strip 320 can be used to increase the contact area, so that the corrugated rubber strip 320 fits the sealed surface more closely, thereby improving the sealing effect and reducing the external flammable gas and moisture from entering the explosion-proof housing 100. A silica gel drying plate 330 is arranged inside the mounting plate 310 to reduce the accumulation of moisture inside the explosion-proof housing 100 and reduce the corrosion and short circuit of the control components. A fire sensor 130 is also arranged inside the explosion-proof housing to monitor the temperature change inside the explosion-proof housing 100. Once the temperature rises abnormally, the alarm 510 will be triggered to notify relevant personnel in time for processing, thereby better improving the safety of use.

[0041] During the use of the electromagnetic lock, whenever the electromagnetic lock is closed, the trapezoidal plates 410 on both sides of the metal plate 400 will press against the rotating rod 210. At this time, the rotating rod 210 will drive the movable guide rod 200 to move down due to the pressure of the trapezoidal plates 410, and use multiple cleaning soft cloths 230 to clean its adsorption area. Secondly, when opening, due to the removal of the trapezoidal plates 410, the return spring 122 will drive the movable guide rod 200 to rebound and return it to its initial position. The entire cleaning process is simpler and more convenient. The cleaning of the adsorption area is completed during the process of opening and closing the door, which prevents dust, debris, and oil from affecting the adsorption effect of the magnetic lock. There is no need for personnel to manually clean it, thereby improving its cleaning efficiency.

[0042] The above shows and describes the basic principle, main features and 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 preferred examples of the utility model and are not used to limit 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 of the utility model is defined by the attached claims and their equivalents.

Claims

1. An explosion-proof magnetic lock, comprising an explosion-proof housing (100), a metal plate (400) and an access control card reader (500), wherein an alarm (510) is arranged on the top of the access control card reader (500), characterized in that: The explosion-proof housing (100) is provided with movable grooves (120) on the outer walls on both sides, and a plurality of return springs (122) are provided at the bottom of the inner cavities of the movable grooves (120). The ends of the return springs (122) are connected to a cleaning assembly, and the cleaning assembly includes a movable guide rod (200). The front outer wall of the explosion-proof housing (100) is provided with an electromagnet (110). The inner wall of the explosion-proof housing (100) is provided with a fire sensor (130). The fire sensor (130), the alarm (510) and the control element (350) are electrically connected in series. The top of the explosion-proof housing (100) is fixed with a sealing bottom plate (300) by screws, and the top of the sealing bottom plate (300) is provided with a mounting plate (310). The top of the mounting plate (310) is provided with a control element (350) electrically connected to the access control card reader (500), and the control element (350) is electrically connected to the electromagnet (110).

2. The explosion-proof magnetic lock according to claim 1, characterized in that: Baffles (121) are provided on both sides of the inner walls of the plurality of movable grooves (120), and the plurality of baffles (121) are flush with the side walls of the explosion-proof housing (100).

3. The explosion-proof magnetic lock according to claim 2, characterized in that: The plurality of movable guide rods (200) are respectively matched with the gaps between the plurality of baffles (121), and the side walls of the plurality of movable guide rods (200) are rotatably connected to a rotating rod (210).

4. The explosion-proof magnetic lock according to claim 3, characterized in that: A connecting plate (220) is connected between the plurality of movable guide rods (200), and a cleaning soft cloth (230) is adhered to the front and rear outer walls of the connecting plate (220) by means of magic stickers.

5. The explosion-proof magnetic lock according to claim 4, characterized in that: Trapezoidal plates (410) are provided on the outer walls on both sides of the metal plate (400), a handle (420) is provided on the front outer wall of the metal plate (400), and both the explosion-proof housing (100) and the metal plate (400) are T-shaped.

6. The explosion-proof magnetic lock according to claim 5, characterized in that: The four outer walls of the mounting plate (310) are all provided with corrugated rubber strips (320), a silica gel drying plate (330) is clamped inside the mounting plate (310), and a fixing net (340) is provided on the top of the mounting plate (310), and the fixing net (340) is made of metal.

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