An electromagnet automatic lock device

Abstract

The utility model provides a kind of electromagnet automatic lock device, belong to lock technical field. Including installation base plate, push-pull electromagnet, rotary electromagnet, lock tongue, lock tongue block, lock tongue guide block and manual lock assembly. Push-pull electromagnet and lock tongue guide block are fixedly installed on installation base plate, push-pull electromagnet has electromagnet push rod, and lock tongue is connected in electromagnet push rod;Rotary electromagnet is fixedly installed on the side of lock tongue guide block away from rotary electromagnet and its output end is connected lock tongue block, for driving lock tongue block rotation to limit or allow the movement of lock tongue respectively;Manual lock assembly is installed on installation base plate, including mechanical lock cylinder and the manual dial piece connected to one end of mechanical lock cylinder, and manual lock assembly is configured to drive lock tongue to carry out horizontal reciprocating motion by mechanical key. Overall small space occupation, installation and use are simple, and use adaptability and reliability can be effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of lock technology, and in particular to an electromagnet automatic lock device. Background Technology

[0002] As a core component ensuring door security, door locks have always been developed and iterated around the dual goals of security and convenience. Early mechanical locks relied entirely on the mechanical cooperation of physical keys and lock cylinders. Although simple in structure, they suffered from many inconveniences such as keys being easily lost, copied, or forgotten. With the advancement of mechatronics technology, the door lock industry has undergone a profound transformation from purely mechanical structures to intelligent automatic locks, realizing a fundamental shift from "opening the door with a key" to "automatically opening / closing the door," bringing users a completely new user experience.

[0003] Existing automatic locks typically use a motor as the drive source, converting the motor's rotational motion into the linear motion of the bolt via transmission mechanisms such as worm gears and gear sets, thereby achieving automatic locking and unlocking. For identity authentication, electronic verification units such as fingerprint recognition modules, password input keyboards, and contactless card readers are widely integrated. Once the system successfully verifies the user's identity, it sends a signal to the control board, which then activates the motor to complete the unlocking action. The entire process requires no physical key, significantly improving the level of intelligence.

[0004] However, existing automatic lock structures still have significant drawbacks. First, their integrated design includes a motor, transmission mechanism, multiple electronic verification modules, and a main control circuit board, resulting in a large number of components, complex structure, and large size. Installation requires significant space to be carved into the door, occupying valuable door space and posing a challenge to the door's structural strength. Second, and more critically, the aforementioned fingerprint, password, and card unlocking methods are all highly dependent on a continuous power supply. In the event of a power outage, the electronic system malfunctions, rendering these convenient unlocking functions completely ineffective and potentially preventing users from entering. In such cases, complex emergency mechanical lock cylinders or external temporary power supplies are typically required, leading to cumbersome repair and restoration processes, high maintenance costs, and exposing the shortcomings of existing technology in terms of reliability and emergency response. Utility Model Content

[0005] This utility model provides an automatic electromagnet lock device that occupies little space, is simple to install and use, and effectively improves adaptability and reliability. The technical solution is as follows: This utility model provides an automatic electromagnet lock device, including: a mounting base plate, a push-pull electromagnet, a rotating electromagnet, a bolt, a bolt stop, a bolt guide block, and a manual lock assembly. Both the push-pull electromagnet and the latch guide block are fixedly mounted on the mounting base plate. The push-pull electromagnet has an electromagnet push rod, and the latch is connected to the electromagnet push rod and moves horizontally back and forth under the guidance of the latch guide block. The rotating electromagnet is fixedly installed on the side of the latch guide block away from the rotating electromagnet and its output end is connected to the latch stop block. It is used to drive the latch stop block to rotate to a limit position to block the electromagnet push rod, or to rotate to a release position to avoid the electromagnet push rod, thereby restricting or allowing the movement of the latch respectively. The manual lock assembly is mounted on the mounting base plate and includes a mechanical lock cylinder and a manual lever connected to one end of the mechanical lock cylinder. The manual lock assembly is configured to drive the mechanical lock cylinder and the manual lever with a mechanical key to move the bolt or the bolt stop to achieve horizontal reciprocating motion of the bolt.

[0006] Optionally, the latch guide block has a guide opening along the axial direction of the electromagnet push rod, and a latch guide opening is provided at the top of the guide opening. The electromagnet push rod passes through the guide opening, and the latch is provided at the top of the electromagnet push rod and slidably embedded in the latch guide opening. Optionally, the latch guide block is provided with a reed switch arranged towards the opening, and the latch is provided with an electromagnet that matches the reed switch. The positions of the reed switch and the electromagnet are matched to detect the extension or retraction position of the latch.

[0007] Optionally, a limiting groove is provided on the top of the latch guide block, and the reed switch is embedded in the limiting groove. Optionally, the driving end of the rotating electromagnet is connected to the locking tongue block via a torsion spring, so that when the rotating electromagnet is not energized, the locking tongue block rotates to a limit position that blocks the electromagnet push rod; when the rotating electromagnet is energized, it overcomes the elastic force of the torsion spring and drives the locking tongue block to rotate to a release position that allows the electromagnet push rod to pass.

[0008] Optionally, the manual lever has a toggle part at its end, the pivot of the manual lever is parallel to the pivot of the bolt stop, the electromagnet push rod has a first headless screw facing the mechanical lock cylinder at its end, and the bolt stop has a second headless screw facing the mechanical lock cylinder. When rotated by the mechanical key, the toggle part presses against the first headless screw when rotating in the first direction to drive the bolt to retract and unlock, and presses against the second headless screw when rotating in the opposite direction to drive the bolt stop to rotate and extend the electromagnet push rod to lock. Optionally, a reset spring is sleeved on the electromagnet push rod. The reset spring is located between the push-pull electromagnet and the retaining ring disposed on the electromagnet push rod, and pushes the electromagnet push rod to extend and reset when the push-pull electromagnet is de-energized. Optionally, the push-pull electromagnet, the latch guide block, the rotary electromagnet, and the manual lock assembly are all fixedly mounted on the mounting base plate by screws.

[0009] Optionally, the locking tongue is detachably connected to the electromagnet push rod.

[0010] Optionally, the locking tongue block is detachably connected to the output end of the rotating electromagnet.

[0011] The beneficial effects of the technical solution provided by this utility model embodiment include at least the following: By employing a rational component layout and integrated design, the lock structure becomes more compact, maximizing internal space utilization and resulting in a small overall size. Compared to the generally bulky and space-consuming nature of traditional door locks, this invention significantly reduces the lock body size, making it suitable for space-constrained installation environments and saving installation space.

[0012] This utility model features an emergency mechanical key unlocking / locking structure. In the event of a power failure or power outage, the door lock can be opened and closed directly using the mechanical key, ensuring that the door lock can still be opened and closed normally even without power. This emergency mechanical channel ensures unimpeded mechanical operation (such as key unlocking) even when the electronic system fails or is powered off, fundamentally avoiding the safety hazard of "mechanical locking due to electronic failure," and improving the reliability and safety of the device in emergency situations.

[0013] This invention employs a latch control scheme combining push-pull and rotary electromagnets. Each electromagnet performs the functions of linear push-pull and rotary drive of the latch, respectively. Their coordinated operation ensures rapid and smooth latch movement, sensitive response of the electric components, and safe and stable opening and locking processes with a low failure rate. The rotary electromagnet exhibits bistable holding characteristics, allowing the latch to remain in its original position by mechanical holding force when unlocked or locked, eliminating the need for continuous energization and effectively reducing energy consumption. The division of labor between the two electromagnetic actuators reduces the risk of overheating or malfunction of a single mechanism under prolonged energization, further enhancing the stability and reliability of the system.

[0014] This utility model adopts a modular and detachable design for all components, with the main components of the lock body integrated on a standardized mounting base plate. During installation, simply fix the mounting base plate to the pre-reserved position on the door and connect the necessary components to complete the quick and easy assembly of the lock. The components are connected by screws or snap-fits, making disassembly equally convenient. This structural design makes subsequent maintenance more convenient; individual components can be removed for inspection without disassembling the entire lock. Under stable conditions, the lock body can be quickly maintained, significantly improving the ease of maintenance. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is an exploded structural diagram of the electromagnet automatic locking device provided in this embodiment of the utility model; Figure 2 This is a schematic diagram of the electromagnet automatic lock device provided in this embodiment of the present invention in the unlocked state; Figure 3 This is a schematic diagram of the electromagnet automatic lock device provided in this embodiment of the present invention in the locked state; Figure 4 This is a schematic diagram of the structure of the other side of the electromagnet automatic lock device provided in this embodiment of the utility model; Figure 5 This is a schematic diagram of the push-pull electromagnet and locking tongue provided in an embodiment of this utility model; Figure 6 This is a schematic diagram of the structure of the rotating electromagnet and the locking tongue block provided in this embodiment of the utility model; Figure 7 This is a schematic diagram of the manual lever provided in an embodiment of the present invention.

[0017] In the diagram: 1-Mounting base plate; 2-Push-pull electromagnet; 3-Rotating electromagnet; 4-Lock tongue; 5-Lock tongue stop; 6-Lock tongue guide block; 7-Manual lock assembly; 8-Reed switch; 21-Electromagnet push rod; 41-Magnet; 51-Second headless screw; 52-Notch; 61-Guide opening; 62-Lock tongue guide opening; 63-Limiting groove; 71-Mechanical lock cylinder; 72-Manual lever; 211-First headless screw; 212-Return spring; 213-Snap ring; 721-Actuating part. Detailed Implementation To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0018] Figure 1 This is an exploded structural diagram of the electromagnet automatic locking device provided in this embodiment of the utility model; Figure 2 This is a schematic diagram of the electromagnet automatic lock device provided in this embodiment of the present invention in the unlocked state; Figure 3 This is a schematic diagram of the electromagnet automatic lock device provided in this embodiment of the present invention in the locked state. Figure 4 This is a schematic diagram of the structure of the other side of the electromagnet automatic lock device provided in this embodiment of the utility model; Figure 5 This is a schematic diagram of the push-pull electromagnet and locking tongue provided in an embodiment of this utility model; Figure 6 This is a schematic diagram of the structure of the rotating electromagnet and the locking tongue block provided in this embodiment of the utility model; Figure 7 This is a schematic diagram of the manual lever provided in an embodiment of the present invention. Figures 1 to 7 As shown, this utility model embodiment provides an electromagnet automatic lock device, including a mounting base plate 1, a push-pull electromagnet 2, a rotating electromagnet 3, a locking tongue 4, a locking tongue stop block 5, a locking tongue guide block 6, and a manual lock assembly 7.

[0019] The push-pull electromagnet 2 and the locking tongue guide block 6 are both fixedly installed on the mounting base plate 1. The push-pull electromagnet 2 has an electromagnet push rod 21, and the locking tongue 4 is connected to the electromagnet push rod 21 and moves horizontally back and forth under the guidance of the locking tongue guide block 6.

[0020] A rotating electromagnet 3 is fixedly installed on the side of the latch guide block 6 away from the rotating electromagnet 3, and its output end is connected to the latch stop block 5. This allows the latch stop block 5 to rotate to a limiting position to block the electromagnet push rod 21, or to a releasing position to avoid the electromagnet push rod 21, thereby respectively limiting or allowing the movement of the latch 4. Exemplarily, in this embodiment of the invention, the latch stop block 5 is elongated, with one end connected to the output end of the rotating electromagnet 3, and the other end having a notch 52 on its front side for engaging with the mating structure on the electromagnet push rod 21. When the electromagnet push rod 21 retracts horizontally, causing the latch 4 to move to the unlocking position, the latch stop block 5 rotates to the limiting position to engage with the electromagnet push rod 21 through the notch 52, thus limiting its forward movement and maintaining the unlocked state. When the output end of the rotating electromagnet 3 rotates in the opposite direction, it will drive the locking tongue block 5 to rotate in the opposite direction to the release position. At this time, the corresponding position of the electromagnet push rod 21 will slide out of the notch 52 to release the restriction. Then, under the drive of the push-pull electromagnet 2 or external force, it will extend forward to reset so that the upper locking tongue 4 moves to the locking position.

[0021] The manual lock assembly 7 is mounted on the mounting base plate 1 and includes a mechanical lock cylinder 71 and a manual lever 72 connected to one end of the mechanical lock cylinder 71. The manual lock assembly 7 is configured to drive the mechanical lock cylinder 71 and the manual lever 72 through a mechanical key to drive the bolt 4 or the bolt stop 5 to move so as to realize the horizontal reciprocating motion of the bolt 4.

[0022] Specifically, the latch guide block 6 has a guide opening 61 along the axial direction of the electromagnet push rod 21, and a latch guide opening 62 is provided at the top of the guide opening 61. The electromagnet push rod 21 passes through the guide opening 61, and the latch 4 is disposed at the top of the electromagnet push rod 21 and slidably embedded in the latch guide opening 62. Therefore, under the limiting guidance of the latch guide block 6, the latch 4 can only slide smoothly in the horizontal direction without deviation or jamming, ensuring the smoothness and reliability of the latch reciprocating motion. Optionally, a reed switch 8 is provided on the latch guide block 6, facing the opening, and a magnet 41 matching the reed switch 8 is provided on the latch 4. The positional cooperation between the reed switch 8 and the magnet is used to detect the extended or retracted position of the latch 4. To detect the positional state of the latch, a reed switch 8 is provided on the latch guide block 6, facing the guide opening 61, and a magnet 41 (e.g., a permanent magnet embedded and fixed on the latch 4) is installed on the latch 4 to cooperate with the reed switch 8. When the latch 4 is in the extended locked position or the retracted unlocked position, the magnet 41 will move to the position corresponding to the reed switch 8, causing the reed switch 8 to change its on / off state. By coordinating the positions of the reed switch 8 and the magnet 41, it is possible to detect and determine whether the latch 4 is extended (locked) or retracted (unlocked), thereby providing a door lock status signal to the control circuit or user interface, facilitating the indication and management of the lock's working status, and improving the intelligence and security of the device. Preferably, a limiting groove 63 is provided on the top of the latch guide block 6, and the reed switch 8 is embedded in the limiting groove 63 and fixed by applying glue to ensure that the reed switch 8 is reliably fixed and will not loosen or shift due to vibration or external force, thereby ensuring the accurate and stable detection of the latch position.

[0023] Optionally, the driving end of the rotating electromagnet 3 is connected to the latch stop 5 via a torsion spring, so that when the rotating electromagnet 3 is not energized, the latch stop 5 rotates to the limit position blocking the electromagnet push rod 21; when the rotating electromagnet 3 is energized, it overcomes the elastic force of the torsion spring and drives the latch stop 5 to rotate to the release position that allows the electromagnet push rod 21 to move out of the way. Furthermore, a return spring 212 is sleeved on the electromagnet push rod 21, located between the push-pull electromagnet 2 and the retaining spring 213 provided on the electromagnet push rod 21, and pushes the electromagnet push rod 21 out to reset when the push-pull electromagnet 2 is de-energized. Exemplarily, this device uses two electromagnets to control the movement and locking of the latch. Specifically, the driving end of the rotating electromagnet 3 is connected to the latch stop 5 via a torsion spring. The torsion spring provides elasticity, causing the latch stop 5 to maintain a tendency to rotate towards the limit position blocking the electromagnet push rod 21 when the rotating electromagnet 3 is not energized. When the rotating electromagnet 3 is energized, its output shaft overcomes the elasticity of the torsion spring, causing the latch stop 5 to rotate to the release position that allows the electromagnet push rod 21 to pass. That is, in the default power-off state, the latch stop 5 will rotate towards the limit position under the action of the torsion spring, blocking the movement of the retracted electromagnet push rod 21, so that the door lock remains open in the mechanical unlocking state when the power is off or in malfunction. When electric unlocking is required, the push-pull electromagnet 2 is first energized, and the electromagnet push rod 21 retracts under the action of magnetic force, causing the latch 4 to retract. At the same time, the rotating electromagnet 3 is kept de-energized and does not move. At this time, the torsion spring will rotate the latch stop 5 back to the limit position and block the electromagnet push rod 21. The latch 4 is blocked by the latch stop 5 and kept in the retracted position to prevent the return spring 212 from pushing it out, thereby completing the unlocking action. Conversely, when electronic locking is required, the push-pull electromagnet 2 is de-energized (at this time, the electromagnet push rod 21 can extend freely under the action of the return spring 212), and simultaneously the rotating electromagnet 3 is momentarily energized, driving the latch stop 5 to rotate to the release position to allow the electromagnet push rod 21 to move out. The electromagnet push rod 21 then extends rapidly under the push of the return spring 212, causing the latch 4 to pop out to the locked position. Subsequently, the power supply to the rotating electromagnet 3 is cut off, and the torsion spring immediately presses the latch stop 5 against the electromagnet push rod 21. At this time, the latch 4 remains extended and locked, and the locking action is completed. It can be seen that through the cooperative design of the two electromagnets, the return spring, and the torsion spring, electronic unlocking and locking of the latch 4 can be achieved without continuous power supply, and semi-automatic reset to the locked state can be achieved when the power is off, which greatly improves the reliability and safety of the device and reduces energy consumption.

[0024] Optionally, the manual lever 72 has an actuating part 721 at its end. The rotation axis of the manual lever 72 is parallel to the rotation axis of the bolt stop 5. The end of the electromagnet push rod 21 has a first headless screw 211 facing the mechanical lock cylinder 71, and the bolt stop 5 has a second headless screw 51 facing the mechanical lock cylinder 71. When rotated by the mechanical key, the actuating part 721 presses against the first headless screw 211 to drive the bolt 4 to retract and unlock. When rotated in the opposite direction, it presses against the second headless screw 51 to drive the bolt stop 5 to rotate and extend the electromagnet push rod 21 to lock. In terms of mechanical emergency unlocking / locking, the two first headless screws 211 and the second headless screw 51 respectively serve as the force contact points when the manual lever 72 is actuated. When the mechanical key is inserted into the mechanical lock cylinder 71 and rotated, it will drive the manual lever 72 to rotate synchronously. When the key is rotated in the unlocking direction, the actuating part 721 first presses against the first headless screw 211 at the end of the electromagnet push rod 21, pushing the electromagnet push rod 21 to retract, causing the bolt 4 to retract against the return spring 212, thereby unlocking (the bolt 4 retracts into the door frame and is no longer inserted into the door strike plate hole). When the key is rotated in the opposite locking direction, the actuating part 721 presses against the second headless screw 51 on the bolt stop block 5, pushing the bolt stop block 5 to rotate around its axis to a position that allows the electromagnet push rod 21 to be released. At this time, the electromagnet push rod 21 pops out under the action of the return spring 212, causing the bolt 4 to extend into the door strike plate to lock. Through the design of the above-described mechanical key drive mechanism, even in the event of a power outage or electronic control failure, the user can still unlock or lock the door by rotating the key to drive the manual lever 72, providing excellent emergency reliability. Furthermore, by adjusting the position and extension length of the first headless screw 211 and the second headless screw 51 on their respective components, the contact timing and stroke of the manual lever 72 when it is turned can be finely adjusted, thereby calibrating the matching relationship between the rotation angle of the mechanical key and the stroke of the bolt 4, facilitating the installation and debugging of the device, and ensuring a smooth and effective manual unlocking / locking process. Optionally, the push-pull electromagnet 2, the latch guide block 6, the rotary electromagnet 3, and the manual lock assembly 7 are all fixedly mounted on the mounting base plate 1 with screws. The latch 4 is detachably connected to the electromagnet push rod 21. Optionally, the latch stop block 5 is detachably connected to the output end of the rotary electromagnet 3. For example, in structural installation, the push-pull electromagnet 2, the latch guide block 6, the rotary electromagnet 3, and the manual lock assembly 7 are all fixedly mounted on the mounting base plate 1 with screws. Using screws for fastening ensures that each component is securely positioned, preventing loosening during operation and facilitating assembly and subsequent maintenance. For instance, the latch 4 is detachably connected to the electromagnet push rod 21 with screws: the top of the electromagnet push rod 21 may have a hole or slot for installing the latch. After the latch 4 is inserted and positioned, it is locked with screws. Thus, when it is necessary to replace the latch 4 with one of different lengths or shapes, the screws can be removed directly to disassemble and replace the latch 4 without replacing the entire push-pull electromagnet assembly, resulting in low maintenance costs and strong adaptability. Similarly, the locking tongue block 5 and the output end of the rotating electromagnet 3 are also fixed by a detachable connection, for example, by locking the locking tongue block 5 to the output shaft of the rotating electromagnet 3 with fastening screws. When it is necessary to replace the rotating electromagnet 3 or the locking tongue block 5, simply loosen the fastening screws to separate them and replace the corresponding parts, which is very convenient. In addition, during assembly and debugging, the angle and position of the locking tongue block 5 on the output shaft can be adjusted by loosening the fastening screws, so that the locking tongue block 5 is exactly in the ideal limit position and release position, and then the screws are tightened to fix it. This adjustable and detachable connection structure ensures the accuracy of the position of the locking tongue block 5 relative to the output end of the rotating electromagnet 3, and also greatly improves the convenience of assembly and maintenance of the device.

[0025] In summary, this invention achieves automatic extension and reliable locking of the latch 4 through the cooperation of the push-pull electromagnet 2 and the rotating electromagnet 3. The structure is compact and small in size. The torsion spring and return spring ensure that the device automatically locks during power failure and will not unlock due to power outage, providing high security. Simultaneously, the manual lock assembly 7 with a mechanical key provides an emergency unlocking / locking method, ensuring normal operation even without power. This electromagnet automatic lock device is easy to install and use, has strong mechanical stability and high reliability, and good environmental adaptability. It meets the requirements of small footprint and resistance to power failure, and has high practical value.

[0026] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains. The terms “first,” “second,” and similar terms used in this patent application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms “an” or “a” and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms “comprising” or “including” and similar terms mean that the elements or objects preceding “comprising” or “including” encompass the elements or objects listed following “comprising” or “including” and their equivalents, and do not exclude other elements or objects. The terms “connected” or “linked” and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms “upper,” “lower,” “left,” and “right” are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0027] The above description is only an optional embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An electromagnet automatic lock device, characterized in that, include: Mounting base plate (1), push-pull electromagnet (2), rotating electromagnet (3), latch (4), latch stop block (5), latch guide block (6), and manual lock assembly (7). The push-pull electromagnet (2) and the latch guide block (6) are both fixedly installed on the mounting base plate (1). The push-pull electromagnet (2) has an electromagnet push rod (21). The latch (4) is connected to the electromagnet push rod (21) and moves horizontally back and forth under the guidance of the latch guide block (6). The rotating electromagnet (3) is fixedly installed on the side of the latch guide block (6) away from the rotating electromagnet (3) and its output end is connected to the latch stop block (5). It is used to drive the latch stop block (5) to rotate to a limit position to block the electromagnet push rod (21), or to rotate to a release position to avoid the electromagnet push rod (21), thereby restricting or allowing the movement of the latch (4) respectively. The manual lock assembly (7) is mounted on the mounting base plate (1) and includes a mechanical lock cylinder (71) and a manual lever (72) connected to one end of the mechanical lock cylinder (71). The manual lock assembly (7) is configured to drive the mechanical lock cylinder (71) and the manual lever (72) with a mechanical key to drive the bolt (4) or the bolt stop (5) to move so as to realize the horizontal reciprocating motion of the bolt (4).

2. The electromagnet automatic lock device according to claim 1, characterized in that, The locking tongue guide block (6) has a guide opening (61) along the axial direction of the electromagnet push rod (21). The top of the guide opening (61) is provided with a locking tongue guide opening (62). The electromagnet push rod (21) passes through the guide opening (61). The locking tongue (4) is located on the top of the electromagnet push rod (21) and is slidably embedded in the locking tongue guide opening (62).

3. The electromagnet automatic lock device according to claim 2, characterized in that, The latch guide block (6) is provided with a reed switch (8) facing the opening, and the latch (4) is provided with a magnet (41) that matches the reed switch (8). The positions of the reed switch (8) and the magnet are matched to detect the extension or retraction position of the latch (4).

4. The electromagnet automatic lock device according to claim 3, characterized in that, The top of the latch guide block (6) has a limiting groove (63), and the reed switch (8) is embedded in the limiting groove (63).

5. The electromagnet automatic lock device according to claim 1, characterized in that, The driving end of the rotating electromagnet (3) is connected to the locking tongue block (5) via a torsion spring, so that when the rotating electromagnet (3) is not energized, the locking tongue block (5) rotates to the limit position that blocks the electromagnet push rod (21); when the rotating electromagnet (3) is energized, it overcomes the elastic force of the torsion spring and drives the locking tongue block (5) to rotate to the release position that allows the electromagnet push rod (21) to pass.

6. The electromagnet automatic lock apparatus according to claim 1, wherein The manual lever (72) is provided with a lever part (721) at its end. The rotation axis of the manual lever (72) is parallel to the rotation axis of the latch block (5). The end of the electromagnet push rod (21) is provided with a first headless screw (211) arranged towards the side of the mechanical lock cylinder (71). The latch block (5) is provided with a second headless screw (51) arranged towards the side of the mechanical lock cylinder (71). When the mechanical key rotates, the lever part (721) presses against the first headless screw (211) when rotating in the first direction to drive the latch (4) to retract and unlock. When rotating in the opposite direction, it presses against the second headless screw (51) to drive the latch block (5) to rotate and cause the electromagnet push rod (21) to extend and lock.

7. The electromagnet automatic lock apparatus according to claim 1, wherein A reset spring (212) is sleeved on the electromagnet push rod (21). The reset spring (212) is located between the push-pull electromagnet (2) and the snap ring (213) set on the electromagnet push rod (21). When the push-pull electromagnet (2) is de-energized, it pushes the electromagnet push rod (21) to extend and reset.

8. The electromagnet automatic lock device according to any one of claims 1 to 7, characterized by The push-pull electromagnet (2), the latch guide block (6), the rotary electromagnet (3), and the manual lock assembly (7) are all fixedly mounted on the mounting base plate (1) by screws.

9. The electromagnet automatic lock device according to any one of claims 1 to 7, characterized in that, The locking tongue (4) is detachably connected to the electromagnet push rod (21).

10. The electromagnet automatic lock device according to any one of claims 1 to 7, characterized in that, The locking tongue block (5) is detachably connected to the output end of the rotating electromagnet (3).

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