An electric latch

Abstract

The utility model discloses an electric suction lock, including the lock body, the lock body lower end rotationally arranged with the lock piece and the secondary lock piece, the lock body upper end is provided with the drive assembly, is used for driving the lock piece or secondary lock piece rotation realizes full lock or unlocking. Secondary lock piece, drive assembly and lock piece place are provided with first switch, second switch and third switch respectively, and the lock body is equipped with emergency unlocking assembly, and emergency unlocking assembly connects secondary lock piece, and realizes emergency unlocking under the failure state through the drive secondary lock piece. Adopt above -mentioned structure design, through the setting of first switch, second switch and third switch, can obtain the position state of lock piece and secondary lock piece, and then determine that the electric suction lock is in the open, half lock or full lock state, when the electric suction lock is in the half lock state, can drive the lock piece through drive assembly and complete full lock, and then guarantee the close fit between the door plate and the cabinet. Meanwhile, the setting of emergency unlocking assembly, when the drive assembly does not work under the failure condition, can be driven through manual emergency unlocking.

Description

Technical Field

[0001] This utility model relates to the field of lock technology, specifically to an electric suction lock. Background Technology

[0002] Medical consumable cabinets are key pieces of equipment in medical institutions used to store medicines, reagents, medical devices, and other medical consumables. They must not only meet the requirements for cleanliness and stability of the storage environment, but also possess reliable safety protection and convenient operation. With the development of medical technology, higher requirements are being placed on the EMC (Electromagnetic Compatibility) of hospital environments. When consumable cabinets are located in important areas such as operating rooms, the electromagnetic wave signals generated by the ultra-high frequency antennas inside the cabinets can easily interfere with other equipment. Therefore, it is necessary to shield the electromagnetic wave signals inside the consumable cabinets.

[0003] In addition, to ensure the rapid access of consumables in emergency medical scenarios, the cabinet door lock must balance locking reliability and emergency operation convenience. Therefore, the rationality of the door lock structure is crucial to the overall performance of the medical consumable cabinet.

[0004] Currently, there are two main solutions for selecting door locks for medical consumable cabinets in the industry, but both have significant technical flaws: First, some solutions borrow from electric suction locks in the automotive field. However, existing automotive electric suction locks are mostly custom-designed for specific car models. Their installation dimensions, locking stroke, and control logic are all tied to the car model, resulting in extremely poor versatility and making it difficult to adapt to medical consumable cabinets of different specifications and structural designs. More importantly, the emergency opening mechanism of automotive electric suction locks usually relies on the vehicle's own electronic control system. In abnormal scenarios such as system power failure or module malfunction, the cabinet door cannot be quickly opened manually, which seriously affects the efficiency of accessing consumables in medical emergencies and poses a safety hazard. Secondly, another option uses ordinary electronic locks. These locks have a simple locking structure and can only achieve basic "lock-unlock" functions. They cannot guarantee a tight fit between the door panel and the cabinet. On the one hand, the gap between the door panel and the cabinet will interrupt the electromagnetic wave shielding path, and the shielding effect is far from meeting the requirements of medical scenarios. On the other hand, a large external force is required to fully engage the latch when closing the door, which is laborious and prone to failure to engage properly due to insufficient closing force. This not only reduces the user experience but also further exacerbates the defects in sealing and shielding performance, failing to meet the comprehensive performance requirements of medical consumable cabinets for locks.

[0005] In summary, existing electric locking locks are prone to malfunctions that prevent them from being opened manually, and they also have poor locking performance, resulting in inadequate electromagnetic wave shielding. Utility Model Content

[0006] In view of the above-mentioned shortcomings of the existing technology, the purpose of this utility model is to provide an electric suction lock that solves the problems of electric suction locks in the prior art being prone to failure and unable to be opened manually, as well as poor locking effect, resulting in poor electromagnetic wave shielding effect.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] An electric locking lock includes a lock body, with a locking plate and a secondary locking plate rotatably mounted at the lower end of the lock body for mutual cooperation. A driving assembly is provided at the upper end of the lock body for driving the locking plate or the secondary locking plate to rotate to achieve full locking or unlocking. A first switch, a second switch, and a third switch are respectively provided at the secondary locking plate, the driving assembly, and the locking plate. An emergency unlocking assembly is provided on the lock body, which is connected to the secondary locking plate and drives the secondary locking plate to achieve emergency unlocking in case of failure.

[0009] With the above structural design, the position status of the lock plate, the auxiliary lock plate, and the drive assembly can be obtained through the setting of the first switch, the second switch, and the third switch, thereby determining whether the electric suction lock is in the open, half-locked, or fully-locked state. When the electric suction lock is in the half-locked state, the lock plate can be driven by the drive assembly to complete the full lock, thereby ensuring a tight fit between the door panel and the cabinet. At the same time, the setting of the emergency unlocking assembly allows for manual emergency unlocking in case of failure when the drive assembly is not working.

[0010] As a further improvement, the lower ends of the locking plate and the auxiliary locking plate are rotatably mounted on the lock body via a rotating shaft, and each rotating shaft is equipped with a torsion spring so that the locking plate and the auxiliary locking plate can automatically reset.

[0011] As a further improvement, the torsion springs on the locking plate and the auxiliary locking plate are arranged in opposite directions, with the locking plate rotating counterclockwise to reset and the auxiliary locking plate rotating clockwise to reset.

[0012] As a further improvement, the lower end of the lock plate is provided with a lock slot to engage with an externally provided bolt. The lock plate is also provided with a half-lock slot and a full-lock slot, and the auxiliary lock plate is provided with a corresponding locking block to engage with the half-lock slot and the full-lock slot.

[0013] As a further improvement, the drive assembly includes a drive motor, a drive gear, a rack, a top plate, and a mounting plate. The mounting plate is movably mounted on the upper end of the lock body. The drive motor is fixedly mounted on the mounting plate. The drive gear is connected to the drive motor in a transmission manner. The rack is slidably mounted on the mounting plate, and the top plate is mounted on the rack. The drive gear meshes with the rack and is used to drive the rack and the top plate to move left and right.

[0014] As a further improvement, the top plate is located between the locking plate and the auxiliary locking plate. The drive motor drives the top plate to move left and right, and the top plate contacts the top of the locking plate or the auxiliary locking plate and pushes the locking plate or the auxiliary locking plate to rotate clockwise or counterclockwise, thereby achieving full locking or unlocking.

[0015] As a further improvement, the emergency unlocking assembly includes a multi-link structure disposed on the back of the lock body. The multi-link structure is movably disposed on the back of the lock body. The two ends of the multi-link structure are respectively connected to the secondary lock plate and the drive assembly, and one end of the multi-link structure is connected to a cable to pull the multi-link structure.

[0016] As a further improvement, the multi-link structure includes a first link, a second link, and a third link that are movably connected in sequence. The lock body is provided with a first limiting groove and a second limiting groove. The upper ends of the lock plate and the auxiliary lock plate are provided with limiting posts, which are movably disposed in the first limiting groove and the second limiting groove.

[0017] The first link is connected to the limiting post at the upper end of the secondary locking plate, the third link is connected to the drive assembly, and the cable is connected to the first link or the third link.

[0018] As a further improvement, a controller is also included, which is electrically connected to the drive assembly, the first switch, the second switch, and the third switch.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. This utility model sets a first switch, a second switch, and a third switch at the positions of the secondary lock plate, the drive assembly, and the lock plate. Based on the open and closed state of the switches, the position state of the rack of the lock plate, the secondary lock plate, and the drive assembly can be obtained, thereby determining whether the electric suction lock is in an open, half-locked, or fully-locked state. When the electric suction lock is in a half-locked state, the lock plate can be driven by the drive assembly to complete the full lock, thereby ensuring a tight fit between the door panel and the cabinet and effectively improving the electromagnetic wave shielding effect of the medical consumables cabinet.

[0021] 2. This utility model, by setting an emergency unlocking component, can unlock the medical consumable cabinet by pulling the auxiliary lock plate to rotate, thereby avoiding the problem of the medical consumable cabinet being unable to function in case of malfunction.

[0022] 3. This utility model uses a drive assembly to drive the lock plate and auxiliary lock plate to rotate, thereby achieving automatic unlocking and locking, making it more convenient to use;

[0023] 4. In this utility model, the drive motor, drive gear, rack and top plate of the drive assembly are all integrated on the mounting plate, and the mounting plate is movably mounted on the lock body. When a malfunction occurs and emergency unlocking is required, the emergency unlocking assembly pulls the secondary lock plate and simultaneously pulls the entire drive assembly to move, thus preventing the position of the top plate of the drive assembly from affecting the rotation of the lock plate and thus affecting emergency unlocking. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the present invention in the unlocked state and after the drive component has been reset;

[0025] Figure 2 This is the book Figure 1 A schematic diagram of the structure after removing the outer housing of the locking plate;

[0026] Figure 3 This is a schematic diagram of the structure of this utility model in a semi-locked state;

[0027] Figure 4 This is a schematic diagram of the drive assembly of this utility model driving the lock plate to complete the fully locked state;

[0028] Figure 5 This is a schematic diagram of the drive component driving the secondary lock plate to unlock;

[0029] Figure 6 This is a diagram showing the state of the device after it has been unlocked using the emergency unlocking component.

[0030] Figure 7 yes Figure 6 A structural diagram of the back after emergency unlocking.

[0031] In the picture:

[0032] Lock body 1, first limiting groove 1a, second limiting groove 1b, blocking post 1c, opening 1d, limiting structure 1e, sliding groove 1f, lock plate 2, lock mouth 2a, half lock slot 2b, full lock slot 2c, auxiliary lock plate 3, locking block 3a, drive assembly 4, drive motor 4a, drive gear 4b, rack 4c, top plate 4d, mounting plate 4e, elongated hole 4f, first switch 5, second switch 6, third switch 7, emergency unlocking assembly 8, first connecting rod 8a, first pull groove 81a, first mounting part 82a, second connecting rod 8b, third connecting rod 8c, second mounting part 81c, connecting shaft 8d, rotating shaft 9, torsion spring 10, limiting post 11, strike bolt 100. Detailed Implementation

[0033] To explain in detail the technical content, structural features, objectives and effects of this utility model, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0034] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0035] Please see Figures 1 to 6 An electric suction lock includes a lock body 1. A locking plate 2 and a secondary locking plate 3 are rotatably mounted on the lower end of the lock body 1 for mutual cooperation. A drive assembly 4 is provided on the upper end of the lock body 1 for driving the locking plate 2 or the secondary locking plate 3 to rotate and achieve full locking or unlocking. A first switch 5, a second switch 6, and a third switch 7 are respectively provided at the secondary locking plate 3, the drive assembly 4, and the locking plate 2 to determine whether the electric suction lock is in an open, partially locked, or fully locked state. An emergency unlocking assembly 8 is provided on the lock body 1, which is connected to the secondary locking plate 3 and enables emergency unlocking in case of a malfunction by driving the secondary locking plate 3. The electric suction lock also includes a controller, which is electrically connected to the drive assembly 4, the first switch 5, the second switch 6, and the third switch 7. This electric suction lock can be installed in a medical consumables cabinet. The controller is integrated into the cabinet and opens and closes the electric suction lock via a drive assembly 4. The controller can also provide feedback from the opening and closing signals of the first switch 5, the second switch 6, and the third switch 7. When the electric suction lock is in a half-locked state, the drive assembly 4 can drive the lock plate 2 to complete the full lock, thereby ensuring a tight fit between the door panel and the cabinet body and effectively improving the electromagnetic wave shielding effect of the medical consumables cabinet. The control principle of the controller is existing technology and will not be described in detail here.

[0036] The specific structure is as follows:

[0037] Please continue reading. Figure 2 , Figure 3 and Figure 4The lower ends of the locking plate 2 and the auxiliary locking plate 3 are rotatably mounted on the lock body 1 via a rotating shaft 9, and each rotating shaft 9 is equipped with a torsion spring 10 to enable the locking plate 2 and the auxiliary locking plate 3 to automatically reset. The torsion springs 10 on the locking plate 2 and the auxiliary locking plate 3 are arranged in opposite directions; the locking plate 2 resets by rotating counterclockwise, and the auxiliary locking plate 3 resets by rotating clockwise. The lock body 1 has a first limiting groove 1a and a second limiting groove 1b. The upper ends of the locking plate 2 and the auxiliary locking plate 3 are each equipped with a limiting post 11, which is movably disposed within the first limiting groove 1a and the second limiting groove 1b. Both the first limiting groove 1a and the second limiting groove 1b are designed with an arc shape according to the rotation trajectory of the locking plate 2 and the auxiliary locking plate 3. A blocking post 1c is provided between the locking plate 2 and the auxiliary locking plate 3 to limit and block their rotation.

[0038] Furthermore, the lower end of the locking plate 2 is provided with a locking opening 2a that engages with an externally installed bolt 100. The bolt 100 is installed on the door of the medical consumables cabinet. The lock body 1 has an opening 1d corresponding to the locking opening 2a. The locking plate 2 is also provided with a half-locking slot 2b and a full-locking slot 2c. The secondary locking plate 3 is provided with a corresponding locking block 3a that engages with the half-locking slot 2b and the full-locking slot 2c. When the cabinet door is open, the electric suction lock is in the unlocked state, and the lock plate 2 and the auxiliary lock plate 3 are in a free state (unlocked state). When the cabinet door is closed, the bolt 100 is inserted into the lock slot 2a of the lock plate 2, pushing the lock plate 2 to rotate clockwise by a certain angle. At this time, under the action of its torsion spring 10, the locking block 3a of the auxiliary lock plate 3 is engaged with the half-locking slot 2b at the upper end of the lock plate 2, and the electric suction lock is in a half-locked state. When the drive assembly 4 pushes the auxiliary lock plate 3 to the right and continues to rotate clockwise, the locking block 3a of the auxiliary lock plate 3 is engaged with the full-locking slot 2c at the lower end of the lock plate 2, and the electric suction lock is in a fully locked state.

[0039] The drive assembly 4 includes a drive motor 4a, a drive gear 4b, a rack 4c, a top plate 4d, and a mounting plate 4e. The mounting plate 4e is movably mounted on the upper end of the lock body 1. Specifically, the mounting plate 4e has multiple elongated holes 4f, and the lock body 1 has corresponding limiting structures 1e located within the elongated holes 4f. The mounting plate 4e can move along the limiting structures 1e. The limiting structure 1e is fixedly mounted in the middle of the mounting plate 4e, and this limiting structure 1e cooperates with a corresponding sliding groove 1f on the lock body 1. The drive motor 4a is fixedly mounted on the mounting plate 4e, the drive gear 4b is drive-connected to the drive motor 4a, the rack 4c is slidably mounted on the mounting plate 4e, and the top plate 4d is mounted on the rack 4c. The drive gear 4b meshes with the rack 4c to drive the rack 4c and the top plate 4d to move left and right.

[0040] In this embodiment, the top plate 4d is located between the locking plate 2 and the auxiliary locking plate 3. The drive motor 4a drives the top plate 4d to move left and right. The top plate 4d contacts the top of the locking plate 2 or the auxiliary locking plate 3 and pushes the locking plate 2 or the auxiliary locking plate 3 to rotate clockwise or counterclockwise. When the drive motor 4a drives the rack 4c to move to the left, the top plate 4d on the rack 4c moves to the left and contacts the upper end of the auxiliary locking plate 3 and pushes the auxiliary locking plate compression torsion spring 10 to rotate counterclockwise until the locking block 3a of the auxiliary locking plate 3 disengages from the full-locking slot 2c at the lower end of the locking plate 2, thus completing the unlocking. Conversely, when the top plate 4d moves to the right and contacts the upper end of the locking plate 2, it pushes the locking plate 2 to rotate clockwise until the locking block 3a of the auxiliary locking plate 3 engages with the full-locking slot 2c at the lower end of the locking plate 2, thus completing the full locking.

[0041] Please see Figure 6 and Figure 7 The emergency unlocking assembly 8 includes a multi-link structure disposed on the back of the lock body 1. This multi-link structure is movably disposed on the back of the lock body 1. Both ends of the multi-link structure are connected to the secondary lock plate 3 and the drive assembly 4, respectively. One end of the multi-link structure is connected to a cable to pull the multi-link structure. Specifically, the multi-link structure includes a first link 8a, a second link 8b, and a third link 8c connected sequentially. The first link 8a is connected to a limiting post 11 at the upper end of the secondary lock plate 3. That is, the first link 8a has a first groove 81a. One end of the limiting post 11 at the upper end of the secondary lock plate 3 is located within the first groove 81a. One end of the first link 8a has a first mounting part 82a for connection with the cable. The other end of the first link 8a is rotatably connected to the second link 8b via a connecting shaft 8d. One end of the connecting shaft 8d is located within a long, narrow sliding groove 1f on the lock body 1 and is limited by the sliding groove 1f. The third link 8c is connected to the second link 8b through the lower end of the limiting structure 1e provided in the middle of the mounting plate 4e, and the second mounting part 81c provided at the free end of the third link 8c is used to connect with the cable. The third link 8c can be moved by pulling the cable. Since the third link 8c is connected to the limiting structure 1e in the middle of the mounting plate 4e, the movement of the third link 8c can drive the entire drive assembly 4 to move.

[0042] The working principle of this utility model is as follows:

[0043] When the cabinet door is open, please refer to Figure 2 When the electric locking lock is in the unlocked state, locking plate 2 and auxiliary locking plate 3 are in a free state (no jamming state). Locking plate 2 contacts and presses against auxiliary locking plate 3, which in turn presses against the first switch 5. At this time, the drive motor 4a and rack 4c are in a reset state, and the top plate 4d is not in contact with locking plate 2 and auxiliary locking plate 3. At this time, rack 4c contacts the second switch 6. In the unlocked state, the first switch 5 and the second switch 6 are closed, and the third switch 7 is open.

[0044] When the cabinet door is closed, please refer to Figure 3 and Figure 4 The bolt 100 is inserted into the locking slot 2a of the locking plate 2, pushing the locking plate 2 to rotate clockwise by a certain angle. At this time, under the action of its torsion spring 10, the locking block 3a of the auxiliary locking plate 3 engages with the half-locking slot 2b at the upper end of the locking plate 2, and the electric suction lock is in a half-locked state. In the half-locked state, the first switch 5 and the third switch 7 are open, and the second switch 6 is closed. The switch signals are fed back to the controller, and the controller issues a command to drive the motor 4a to rotate, the rack 4c moves to the right, and the top plate 4d on the rack 4c contacts the upper end of the locking plate 2, pushing the locking plate 2 to rotate clockwise and abut against the third switch 7. At this time, the auxiliary locking plate 3 rotates clockwise under the action of the torsion spring 10, and the locking block 3a of the auxiliary locking plate 3 engages with the full-locking slot 2c at the lower end of the locking plate 2. The bolt 100 is pulled into a deeper position, and the cabinet door is locked. At this time, the electric suction lock is in a fully locked state. In the fully locked state, the first switch 5 is open, the second switch 6 is open, and the third switch 7 is closed. Then, the controller issues a reset command, driving motor 4a to operate, and rack 4c moves to the left. The first switch 5 opens, the second switch 6 closes, and the third switch 7 closes, completing the reset and the electric suction lock is fully engaged. Therefore, this electric suction lock can automatically identify the half-lock state and automatically control the full lock, thus ensuring a tight fit between the cabinet door and the cabinet body, effectively improving the electromagnetic wave shielding effect of the medical consumables cabinet.

[0045] When you need to unlock the door, please refer to Figure 5 The controller issues a command, driving motor 4a to move rack 4c to the left, causing top plate 4d to push the upper end of secondary locking plate 3 to rotate counterclockwise. The locking block 3a of secondary locking plate 3 disengages from the full-locking slot 2c of locking plate 2, locking plate 2 rotates counterclockwise, bolt 100 is released, the cabinet door opens, first switch 5 and second switch 6 close, and third switch 7 opens. The controller then issues a reset command, driving motor 4a to move rack 4c to the right back to the reset position.

[0046] When the electric latch malfunctions and cannot be opened, please refer to [the relevant documentation]. Figure 6 and Figure 7 When the drive motor 4a stops working, and an emergency unlocking is required, the cable can be pulled. The cable drives the first connecting rod 8a to rotate the secondary lock plate 3 counterclockwise. The locking block 3a of the secondary lock plate 3 disengages from the full-locking slot 2c of the lock plate 2, and the lock plate 2 rotates counterclockwise. At this time, the third connecting rod 8c pulls the drive assembly 4 to move as a whole, preventing the top plate 4d from blocking the rotation of the lock plate 2. The rotation of the lock plate 2 releases the bolt 100, and the cabinet door opens. Therefore, the above structure realizes emergency unlocking in case of failure.

[0047] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments disclosed and described above, and some modifications and changes to this utility model should also fall within the protection scope of the claims of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this utility model.

Claims

1. An electric suction lock, characterized in that, The lock includes a lock body (1), with a lock plate (2) and a secondary lock plate (3) rotatably mounted on the lower end of the lock body (1). A drive assembly (4) is mounted on the upper end of the lock body (1) to drive the lock plate (2) or the secondary lock plate (3) to rotate and achieve full locking or unlocking. A first switch (5), a second switch (6), and a third switch (7) are respectively mounted on the secondary lock plate (3), the drive assembly (4), and the lock plate (2). An emergency unlocking assembly (8) is mounted on the lock body (1). The emergency unlocking assembly (8) is connected to the secondary lock plate (3) and achieves emergency unlocking in the event of a fault by driving the secondary lock plate (3).

2. The electric suction lock according to claim 1, characterized in that, The lower ends of the locking plate (2) and the auxiliary locking plate (3) are rotatably mounted on the lock body (1) via a rotating shaft (9), and a torsion spring (10) is provided on the rotating shaft (9) so that the locking plate (2) and the auxiliary locking plate (3) can automatically reset.

3. An electric suction lock according to claim 2, characterized in that, The torsion springs (10) on the locking plate (2) and the auxiliary locking plate (3) are arranged in opposite directions. The locking plate (2) is reset by rotating counterclockwise, and the auxiliary locking plate (3) is reset by rotating clockwise.

4. An electric suction lock according to any one of claims 1-3, characterized in that, The lower end of the lock plate (2) is provided with a lock opening (2a) that engages with an externally provided bolt (100). The lock plate (2) is also provided with a half-lock slot (2b) and a full-lock slot (2c). The auxiliary lock plate (3) is provided with a corresponding locking block (3a) that engages with the half-lock slot (2b) and the full-lock slot (2c).

5. An electric suction lock according to claim 1, characterized in that, The drive assembly (4) includes a drive motor (4a), a drive gear (4b), a rack (4c), a top plate (4d), and a mounting plate (4e). The mounting plate (4e) is movably mounted on the upper end of the lock body (1). The drive motor (4a) is fixedly mounted on the mounting plate (4e). The drive gear (4b) is connected to the drive motor (4a) in a transmission manner. The rack (4c) is slidably mounted on the mounting plate (4e), and the top plate (4d) is mounted on the rack (4c). The drive gear (4b) meshes with the rack (4c) to drive the rack (4c) and the top plate (4d) to move left and right.

6. An electric suction lock according to claim 5, characterized in that, The top plate (4d) is located between the locking plate (2) and the auxiliary locking plate (3). The drive motor (4a) drives the top plate (4d) to move left and right. The top plate (4d) contacts the top of the locking plate (2) or the auxiliary locking plate (3) and pushes the locking plate (2) or the auxiliary locking plate (3) to rotate clockwise or counterclockwise, thereby achieving full locking or unlocking.

7. An electric suction lock according to claim 1, characterized in that, The emergency unlocking component (8) includes a multi-link structure disposed on the back of the lock body (1). The multi-link structure is movably disposed on the back of the lock body (1). The two ends of the multi-link structure are respectively connected to the secondary lock plate (3) and the drive component (4), and one end of the multi-link structure is connected to a cable to pull the multi-link structure.

8. An electric suction lock according to claim 7, characterized in that, The multi-link structure includes a first link (8a), a second link (8b), and a third link (8c) that are movably connected in sequence. The lock body (1) is provided with a first limiting groove (1a) and a second limiting groove (1b). The upper ends of the lock plate (2) and the auxiliary lock plate (3) are provided with limiting posts (11), which are movably disposed in the first limiting groove (1a) and the second limiting groove (1b). The first link (8a) is connected to the limiting post (11) at the upper end of the secondary locking plate (3), the third link (8c) is connected to the drive assembly (4), and the cable is connected to the first link (8a) or the third link (8c).

9. An electric suction lock according to claim 1, characterized in that, It also includes a controller, which is electrically connected to the drive assembly (4), the first switch (5), the second switch (6) and the third switch (7).

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