A lock for use with an external electronic lock

Abstract

This application belongs to the field of door lock technology, specifically relating to a lock for use with an external electronic lock. It includes a housing, a secondary latch slidably mounted on the housing to keep the door closed, a primary latch for locking the door, a drive shaft mounted on the housing, and a linkage assembly connecting the drive shaft, the primary latch, and the secondary latch. Rotation of the drive shaft drives the linkage assembly to extend and retract the primary latch and the secondary latch relative to the housing. By adding a secondary latch and utilizing the linkage assembly to make it extend and retract synchronously with the primary latch, the pain point of existing external electronic locks requiring manual door-holding assistance for alignment is cleverly solved. When closing the door, the secondary latch can pre-lock and position the door, similar to a latch bolt, stably maintaining it in a precise closed position. This creates perfect alignment conditions for the smooth extension of the primary latch, ensuring the reliability of subsequent locking. The entire process requires no manual intervention; the user can simply close the door and leave, greatly improving ease of use.

Description

[Technical Field] This application belongs to the field of door lock technology, specifically relating to a lock used in conjunction with an external electronic lock. [Background Technology] To facilitate users upgrading traditional mechanical door locks to smart locks, external electronic locks have emerged on the market that do not require large-scale modifications to the door. However, existing external electronic locks generally use square bolts for locking. Because square bolts lack a guiding function, if the door is slightly misaligned when closing, the bolt cannot smoothly extend into the lock. This forces users to hold the door shut with their hand after closing, waiting for the bolt to extend and lock before leaving. This extra step not only violates the user's natural habit of "closing and leaving," reducing convenience, but also poses a security risk of the door not being properly locked due to forgetting to hold the door shut. [Utility Model Content] To address the problem in existing external electronic locks that require manual intervention to ensure alignment with the door when closing due to the presence of only a square latch, this application provides a lock for use with external electronic locks.

[0001] This application is achieved through the following technical solution: A lock for use with an external electronic lock includes a housing, a secondary latch slidably disposed on the housing for keeping the door closed, a primary latch for locking the door, a drive shaft disposed on the housing, and a linkage assembly connecting the drive shaft, the primary latch and the secondary latch. The rotation of the drive shaft drives the linkage assembly to extend and retract the primary latch and the secondary latch relative to the housing.

[0002] As described above, a lock used with an external electronic lock includes a linkage component comprising a locking connector, a locking lever rotatably connected to the locking connector, a linkage component rotatably disposed within the housing and rotatably connected to one side of the locking lever, and a main bolt connector connected to the main bolt. The linkage component is connected to the main bolt connector, and the linkage component rotates counterclockwise to drive the main bolt connector to cause the main bolt to extend relative to the housing.

[0003] As described above, a lock for use with an external electronic lock includes a linkage member with a drive post and a first connecting hole, a main bolt connector with a drive hole for the drive post to pass through, a first elastic member between the locking connector and the housing for resetting the locking connector, a first sliding groove corresponding to the first connecting hole for sliding relative to the linkage member, a drive shaft rotating counterclockwise causing the locking connector to drive the linkage member to rotate counterclockwise, and the drive post pushing against the drive hole causing the main bolt to extend out of the housing.

[0004] As described above, in a lock used with an external electronic lock, the linkage component further includes an unlocking connector and an unlocking lever rotatably connected to the unlocking connector. The unlocking lever is rotatably connected to the other side of the linkage component. The clockwise rotation of the linkage component drives the main bolt connector to retract the main bolt relative to the housing.

[0005] As described above, in a lock used with an external electronic lock, the linkage is further provided with a second connecting hole, and the unlocking rod is provided with a second sliding groove corresponding to the second connecting hole and allowing the unlocking rod to slide relative to the linkage. The drive shaft rotates clockwise, driving the unlocking connector to drive the linkage to rotate clockwise, and the drive column pushes against the drive hole, causing the main lock tongue to retract into the outer shell.

[0006] As described above, a lock used with an external electronic lock further includes a secondary latch connector connected to the secondary latch, the unlocking connector having a pushing part that abuts against the secondary latch connector, and a second elastic member for driving the secondary latch connector and the secondary latch connector to reset.

[0007] As described above, in a lock used with an external electronic lock, the secondary latch connector includes a connecting part and a limiting part. The outer shell is provided with a baffle for limiting the movement distance of the limiting part. The pushing part abuts against the limiting part. The second elastic member is sleeved on the outside of the connecting part and located between the secondary latch and the baffle.

[0008] As described above, in a lock used with an external electronic lock, the clockwise rotation of the drive shaft causes the pusher on the unlocking connector to push against the secondary latch connector, thereby causing the secondary latch to retract into the housing.

[0009] In the lock used with an external electronic lock as described above, the secondary bolt is a beveled bolt.

[0010] As described above, in a lock used with an external electronic lock, the drive shaft is provided with a limiting block, and the unlocking connector and the locking connector are respectively provided with a first limiting groove and a second limiting groove for the limiting block to pass through. The first limiting groove and the second limiting groove each include a first holding part and a second holding part. The drive shaft rotates counterclockwise to drive the limiting block to make the first holding part on the locking connector correspond to the first holding part on the unlocking connector; the drive shaft rotates clockwise to drive the limiting block to make the second holding part on the unlocking connector correspond to the second holding part on the locking connector.

[0011] Compared with the prior art, this application has the following advantages: This application discloses a lock for use with an external electronic lock. By adding a secondary bolt and utilizing a linkage component to make it extend and retract synchronously with the main bolt, it cleverly solves the pain point of existing external electronic locks requiring manual assistance in aligning the door. When closing the door, the secondary bolt can first act as a positioning and pre-locking function similar to a latch, stably holding the door in a precise closed position. This creates perfect alignment conditions for the smooth extension of the main bolt, ensuring the reliability of subsequent locking. The entire process requires no human intervention; the user can simply close the door and leave, greatly improving the convenience and automation of use, and bringing a smooth and natural user experience. [Attached Image Description] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 It is a three-dimensional representation in the embodiments of this application. Figure 1 ; Figure 2 yes Figure 1 Exploded view; Figure 3 It is a three-dimensional representation in the embodiments of this application. Figure 2 ; Figure 4 yes Figure 3 Exploded view; Figure 5 This is a schematic diagram of the internal structure of an embodiment of this application; Figure 6 This is an assembly diagram of the drive shaft with the locking and unlocking connectors; Figure 7 yes Figure 6 Exploded view.

Detailed Implementation Methods

[0013] Please see Figures 1 to 7A lock for use with an external electronic lock includes a housing 1, a secondary latch 2 slidably mounted on the housing 1 for keeping the door closed, a primary latch 3 for locking the door, a drive shaft 4 mounted on the housing 1, and a linkage assembly 5 connecting the drive shaft 4, the primary latch 3, and the secondary latch 2. The rotation of the drive shaft 4 drives the linkage assembly 5 to extend and retract the primary latch 3 and the secondary latch 2 relative to the housing 1.

[0014] This application fundamentally solves the technical pain points of existing external electronic locks by setting up a secondary latch and a primary latch, all driven by the same drive shaft and linkage component. It achieves automatic positioning and reliable locking after the door is closed, eliminating the need for the user to manually hold the door. The secondary latch, typically a beveled latch, positions and temporarily locks the door upon closing, securing it in the correct position and facilitating the smooth extension of the primary latch (e.g., a square latch). This significantly improves ease of use, smoothness, and locking reliability, conforming to the user's natural habit of "closing and leaving." When the user closes the door, the secondary latch 2 first contacts the strike plate on the door frame and automatically retracts due to its beveled structure. Once the door is fully closed, it springs out under internal spring force and engages with the strike plate, keeping the door closed. When the electronic lock's motor drives the drive shaft 4 to rotate, the linkage component 5 is triggered, converting the rotational motion of the drive shaft into linear extension and retraction motion of the primary latch 3 and the secondary latch 2. When locking the door, the linkage component drives the main bolt to extend, completing the final rigid locking; when opening the door, the linkage component retracts the main bolt and the auxiliary bolt simultaneously or sequentially, allowing the door to be opened.

[0015] The linkage component 5 and the latch itself can be designed to accommodate both left and right door opening directions, with a centrally symmetrical structure. During manufacturing or installation, by flipping a key component within the linkage component 180 degrees or inverting the entire lock body for installation, adjustments to the outer casing are required to easily adapt to either left or right door openings, resolving installation compatibility issues arising from different door opening directions. Furthermore, the secondary latch 2 can be designed as a detachable and flip-up module. During installation, simply adjust the bevel of the secondary latch to the correct direction according to the door's opening direction and then lock it. This provides significant installation flexibility.

[0016] Drive shaft 4 is the core component connecting the power source and the lock cylinder mechanism. By replacing different types of drive shafts, this lock can flexibly adapt to three mainstream application modes, as follows: Purely mechanical type: The end of the drive shaft is designed to insert into a hole corresponding to the lever or square bar of a traditional mechanical key lock cylinder. The user rotates the mechanical key to turn the drive shaft, thereby driving the linkage component to complete the extension and retraction of the main and auxiliary bolts. This solution solves the problem of purely mechanical use in situations where there is no power or specific security requirements, such as fire escape doors.

[0017] Semi-automatic: The drive shaft is connected to a clutch with a motor reduction gearbox via a square rod or tube, while retaining an interface for emergency unlocking with a mechanical key. Normally, all unlocking commands (such as facial recognition, fingerprint, password, card, APP, etc.) are driven by an electronic motor to disengage the clutch, allowing for manual unlocking. In the event of a power outage or other emergency, the clutch can be disengaged using a mechanical key, followed by manual unlocking.

[0018] Fully automatic: The drive shaft is rigidly connected directly to a closed motor gearbox, and the end of the drive shaft is designed with a pry hole for an emergency mechanical key lock cylinder. Normally, all unlocking commands (such as facial recognition, fingerprint, password, card, App, etc.) are driven by the motor via electronic control. Unlocking can be achieved without human assistance. In the event of a power outage or other emergency, the mechanical key can be used to turn the drive shaft to unlock the lock.

[0019] Furthermore, as a preferred embodiment of this solution and not a limitation thereof, the linkage component 5 includes a locking connector 51, a locking rod 52 rotatably connected to the locking connector 51, a linkage component 53 rotatably disposed within the housing 1 and rotatably connected to one side of the locking rod 52, and a main tongue connector 54 connected to the main locking tongue 3. The linkage component 53 is connected to the main tongue connector 54, and the linkage component 53 rotates counterclockwise to drive the main tongue connector 54 to cause the main locking tongue 3 to extend relative to the housing 1.

[0020] Furthermore, as a preferred embodiment of this solution and not a limitation, the linkage 53 is provided with a drive post 531 and a first connecting hole 532, the main tongue connector 54 is provided with a drive hole 541 through which the drive post 531 passes, the locking connector 51 and the outer shell 1 are provided with a first elastic element 511 for driving the locking connector 51 to reset, the locking rod 52 is provided with a first sliding groove 521 corresponding to the first connecting hole 532 and for the locking rod 52 to slide relative to the linkage 53, the drive shaft 4 rotates counterclockwise to drive the locking connector 51 to drive the linkage 53 to rotate counterclockwise, and the drive post 531 pushes against the drive hole 541 to make the main locking tongue 3 extend out of the outer shell 1.

[0021] In this embodiment, stable and reliable force transmission is achieved. The cooperation between the drive column 531 and the drive hole 541 provides a precise thrust point. The first elastic element 511, such as a spring, ensures that the locking assembly can automatically reset after the action is completed, preparing for the next unlocking action. The design of the first slide groove 521 plays a role in tolerance and buffering, allowing the components to slide smoothly in complex geometric movements, avoiding mechanical interference and jamming, and significantly improving the smoothness of the mechanism's movement and the reliability of long-term use. During the locking process, the drive shaft 4 rotates counterclockwise, driving the locking connector 51 to push the locking rod 52, and the locking rod 52 then pushes the linkage 53 to rotate counterclockwise. During the rotation, the drive column 531 on the linkage 53 will push against the inner wall of the drive hole 541 on the main tongue connector 54, thereby smoothly pushing the main lock tongue 3 out of the outer shell 1 to complete the locking. After the action is completed, the first elastic element 511 pulls the locking connector 51 back to the initial position. In addition, the drive hole 541 can be designed as an irregular hole, such as an oblong hole, in which the drive column 531 slides. By changing the shape of the hole, the speed and acceleration curve during the extension of the main bolt can be altered. For example, designing a curve that is slow at first and then fast can reduce the initial impact; designing it to decelerate at the end can reduce locking noise. This solves the technical problem of having higher requirements for the operational quality of locks, such as quietness and smoothness.

[0022] Furthermore, as a preferred embodiment of this solution and not a limitation, the linkage component 5 also includes an unlocking connector 55 and an unlocking rod 56 rotatably connected to the unlocking connector 55. The unlocking rod 56 is rotatably connected to the other side of the linkage component 53. The clockwise rotation of the linkage component 53 drives the main tongue connector 54 to retract the main locking tongue 3 relative to the outer shell 1.

[0023] Furthermore, as a preferred embodiment of this solution and not a limitation, the linkage 53 is also provided with a second connecting hole 533, and the unlocking rod 56 is provided with a second sliding groove 561 corresponding to the second connecting hole 533 and allowing the unlocking rod 56 to slide relative to the linkage 53. The clockwise rotation of the drive shaft 4 drives the unlocking connector 55 to drive the linkage 53 to rotate clockwise, and the drive column 531 pushes against the drive hole 541, causing the main locking tongue 3 to retract into the outer shell 1.

[0024] In this embodiment, the clockwise rotation of the drive shaft is used for driving, realizing a fully functional and logically clear bidirectional drive system. This allows the same core component, the linkage 53, to execute two opposite commands, simplifying the overall structure, reducing the number of parts, and lowering manufacturing costs and failure rates. During the unlocking process, the drive shaft 4 rotates clockwise, driving the unlocking connector 55 to push the unlocking lever 56, which in turn causes the linkage 53 to rotate clockwise. At this time, the drive column 531 will push against the inner wall of the other side of the drive hole 541, pulling the main tongue connector 54 and the main lock tongue 3 back into the outer casing 1, completing the unlocking. Similarly, the second slide groove 561 also ensures the smoothness of this process.

[0025] Furthermore, as a preferred embodiment of this solution and not a limitation, it also includes a secondary tongue connector 6 connected to the secondary locking tongue 2, wherein the unlocking connector 55 is provided with a pushing part 551 that abuts against the secondary tongue connector 6, and a second elastic member 61 for driving the secondary tongue connector 6 and the secondary tongue connector 6 to reset.

[0026] Furthermore, as a preferred embodiment of this solution and not a limitation, the secondary tongue connector 6 includes a connecting portion 62 and a limiting portion 63. The outer shell 1 is provided with a baffle 11 for limiting the movement distance of the limiting portion 63. The pushing portion 551 abuts against the limiting portion 63. The second elastic member 61 is sleeved on the outside of the connecting portion 62 and located between the secondary tongue 2 and the baffle 11.

[0027] Furthermore, as a preferred embodiment of this solution and not a limitation, the clockwise rotation of the drive shaft 4 causes the push portion 551 on the unlocking connector 55 to push against the secondary tongue connector 6, thereby causing the secondary locking tongue 2 to retract into the housing 1.

[0028] In this embodiment, the retraction of the secondary bolt is linked to the unlocking action of the primary bolt. By providing a pushing part 551 on the unlocking connector 55, the secondary bolt can be retracted simultaneously when the unlocking command is executed. The second elastic element 61 ensures that the secondary bolt is always in a ready-to-go state when not unlocked. The baffle 11 plays a crucial limiting role, preventing the secondary bolt from traveling too far or the components from coming off. This entire design ensures the integrity and efficiency of the door opening action: both bolts retract simultaneously in one operation. During the retraction of the secondary bolt, when performing the clockwise unlocking action, the unlocking connector 55 moves, and the pushing part 551 on it impacts and pushes the limiting part 63 of the secondary bolt connector 6. This thrust overcomes the elasticity of the second elastic element 61, causing the secondary bolt 2 to retract into the housing. Since this action is synchronized with the retraction of the primary bolt, it ensures that the door lock is fully opened. Once the unlocking action is complete and the external force disappears, the second elastic element 61 will push the secondary latch 2 and the secondary latch connector 6 back to their initial extended state. Furthermore, the interaction between the pushing part 551 and the secondary latch connector 6 can be a roller-type contact. That is, a small roller is installed on the pushing part or the pushed-up limiting part, changing sliding friction into rolling friction. This significantly reduces friction, making the unlocking action easier and smoother, and greatly reducing wear and tear from long-term use, solving the lifespan and noise problems caused by traditional pure sliding friction.

[0029] Furthermore, as a preferred embodiment of this solution and not a limitation, the secondary locking tongue 2 is a slanted tongue.

[0030] In this embodiment, the secondary latch automatically compresses when the door is closed and automatically ejects after reaching its designated position. This function enables automatic positioning and pre-locking of the door, thus solving the fundamental problem in the prior art where manual intervention is required to wait for the latch to lock. When the door is closed, the beveled surface of the latch contacts the strike plate on the door frame. Due to the force decomposition, this contact force generates a component force that pushes the latch into the lock body. The latch retracts against the elastic force of its internal spring, namely the aforementioned second elastic element 61. When the door is fully closed, the latch passes the edge of the strike plate and aligns with the hole in the strike plate. The spring force immediately ejects it, locking it into the hole with a "click" sound, at which point the door is firmly positioned. Besides the beveled latch, the secondary latch can also be a magnetic latch or a roller-type latch. Magnetic latch: The secondary latch consists of a permanent magnet or electromagnet, with a metal plate or magnet installed at the corresponding position on the door frame. When the door is closed, the magnetic force attracts the door into place. Its advantages include completely silent closing, with no mechanical collision noise, solving the application problem in places with high noise requirements (such as bedrooms and conference rooms). Roller-type latch: The head of the secondary latch is a rolling ball or roller. When closing the door, the roller smoothly rolls against the door frame with minimal friction. Its advantages include very effortless closing, less wear on the door leaf, and solves the problems of lifespan and convenience for frequently opened or heavy doors.

[0031] Furthermore, as a preferred embodiment of this solution and not a limitation, the drive shaft 4 is provided with a limiting block 41, and the unlocking connector 55 and the locking connector 51 are respectively provided with a first limiting groove 552 and a second limiting groove 512 for the limiting block 41 to pass through. The first limiting groove 552 and the second limiting groove 512 each include a first holding part 100 and a second holding part 200. The drive shaft 4 rotates counterclockwise to drive the limiting block 41 to make the first holding part 100 on the locking connector 51 correspond to the first holding part 100 on the unlocking connector 55; the drive shaft 4 rotates clockwise to drive the limiting block 41 to make the second holding part 200 on the unlocking connector 55 correspond to the second holding part 200 on the locking connector 51.

[0032] In this embodiment, the cooperation between the limiting block and the specially shaped limiting groove ensures that when the drive shaft rotates counterclockwise, its power is precisely and uniquely transmitted to the locking connector; when it rotates clockwise, it is precisely and uniquely transmitted to the unlocking connector. This completely avoids the erroneous driving of components in the other direction when rotating in one direction, ensuring clear separation and reliable execution of locking and unlocking commands, which is the core guarantee for the stable bidirectional operation of the entire mechanism. The limiting block 41 on the drive shaft 4 is a protrusion. The limiting grooves on the locking and unlocking connectors are through holes. When the drive shaft rotates counterclockwise, the limiting block engages with the first holding part 100 of the limiting groove of the locking connector, thereby pushing it. At this time, the limiting block slides freely in the limiting groove of the unlocking connector without generating thrust. Conversely, when the drive shaft rotates clockwise, the limiting block engages with the second holding part 200 of the limiting groove of the unlocking connector, pushing it, while the locking connector remains unaffected.

[0033] The working principle of this embodiment is as follows: Closing and locking process Automatic positioning and pre-locking: When the user pushes the door to close, the secondary latch 2, acting as a beveled latch, is the first to engage. Its beveled surface contacts the strike plate on the door frame and automatically retracts into its housing due to the force applied. Once the door is fully closed, the secondary latch 2 automatically pops out under the action of the internal second elastic element 61 and engages with the groove in the strike plate, producing a "click" sound. At this point, the door is precisely positioned and kept closed by the secondary latch 2, allowing the user to leave without any support.

[0034] Locking Execution: When the lock's control system issues a locking command, the drive shaft 4 begins to rotate counterclockwise. The drive shaft 4, through its limit block 41, drives the locking connector 51, which in turn pushes the locking lever 52, causing the linkage 53 to rotate counterclockwise. The drive column 531 on the linkage 53 abuts against and pushes the main bolt connector 54. Finally, the main bolt connector 54 causes the main bolt 3, used for rigid locking, to extend out of the outer casing 1 and enter the lock slot of the door frame, completing the final locking.

[0035] Unlocking and opening the door Unlocking: When the lock receives an unlocking command (such as fingerprint, password, etc.), drive shaft 4 begins to rotate clockwise.

[0036] Main bolt retraction: The limit block 41 on the drive shaft 4 will then drive the unlocking connector 55, which in turn drives the linkage 53 to rotate clockwise via the unlocking lever 56. The drive column 531 on the linkage 53 will pull the main bolt connector 54 in the opposite direction, thereby retracting the main bolt 3 from the lock opening of the door frame into the outer casing 1.

[0037] The secondary latch retracts synchronously: While the unlocking connector 55 moves, the specially designed push part 551 on it will abut against and push the secondary latch connector 6. This push force will overcome the elastic force of the second elastic member 61 and force the secondary latch 2 used for positioning to retract synchronously into the outer shell 1.

[0038] Door opening complete: At this point, both the main bolt and the auxiliary bolt have been fully retracted, the door lock is in the open position, and the user can easily pull the door open.

[0039] The above are implementation methods provided in conjunction with specific content, and it is not intended that the specific implementation of this application is limited to these descriptions. Any methods or structures that are similar to those of this application, or any technical deductions or substitutions made based on the concept of this application, should be considered within the scope of protection of this application.

Claims

1. A lock for use with an external electronic lock, characterized in that, The device includes a housing (1), a secondary latch (2) slidably disposed on the housing (1) for keeping the door closed, a primary latch (3) for locking the door, a drive shaft (4) disposed on the housing (1), and a linkage assembly (5) connecting the drive shaft (4), the primary latch (3) and the secondary latch (2). The drive shaft (4) rotates to drive the linkage assembly (5) to extend and retract the primary latch (3) and the secondary latch (2) relative to the housing (1).

2. The lock device according to claim 1, used in conjunction with an external electronic lock, characterized in that, The linkage component (5) includes a locking connector (51), a locking rod (52) rotatably connected to the locking connector (51), a linkage component (53) rotatably disposed inside the housing (1) and rotatably connected to one side of the locking rod (52), and a main tongue connector (54) connected to the main locking tongue (3). The linkage component (53) is connected to the main tongue connector (54). The linkage component (53) rotates counterclockwise to drive the main tongue connector (54) to drive the main locking tongue (3) to extend relative to the housing (1).

3. A lock for use with an external electronic lock according to claim 2, characterized in that, The linkage (53) is provided with a drive post (531) and a first connecting hole (532). The main tongue connector (54) is provided with a drive hole (541) through which the drive post (531) passes. The locking connector (51) and the outer shell (1) are provided with a first elastic element (511) for driving the locking connector (51) to reset. The locking rod (52) is provided with a first sliding groove (521) corresponding to the first connecting hole (532) and for the locking rod (52) to slide relative to the linkage (53). The drive shaft (4) rotates counterclockwise to drive the locking connector (51) to drive the linkage (53) to rotate counterclockwise. The drive post (531) pushes against the drive hole (541) so that the main locking tongue (3) extends out of the outer shell (1).

4. A lock for use with an external electronic lock according to claim 3, characterized in that, The linkage component (5) also includes an unlocking connector (55) and an unlocking lever (56) rotatably connected to the unlocking connector (55). The unlocking lever (56) is rotatably connected to the other side of the linkage component (53). The linkage component (53) rotates clockwise to drive the main tongue connector (54) to drive the main locking tongue (3) to retract relative to the outer shell (1).

5. A lock for use with an external electronic lock according to claim 4, characterized in that, The linkage (53) is also provided with a second connecting hole (533), and the unlocking rod (56) is provided with a second sliding groove (561) corresponding to the second connecting hole (533) and allowing the unlocking rod (56) to slide relative to the linkage (53). The drive shaft (4) rotates clockwise to drive the unlocking connector (55) to drive the linkage (53) to rotate clockwise. The drive column (531) pushes against the drive hole (541) to make the main locking tongue (3) retract into the outer shell (1).

6. A lock for use with an external electronic lock according to claim 4, characterized in that, It also includes a secondary tongue connector (6) connected to the secondary locking tongue (2), the unlocking connector (55) having a push portion (551) that abuts against the secondary tongue connector (6), and a second elastic member (61) for driving the secondary tongue connector (6) and the secondary tongue connector (6) to reset.

7. A lock for use with an external electronic lock according to claim 6, characterized in that, The auxiliary tongue connector (6) includes a connecting part (62) and a limiting part (63). The outer shell (1) is provided with a baffle (11) for limiting the movement distance of the limiting part (63). The pushing part (551) abuts against the limiting part (63). The second elastic member (61) is sleeved on the outside of the connecting part (62) and located between the auxiliary tongue (2) and the baffle (11).

8. A lock for use with an external electronic lock according to claim 7, characterized in that, The drive shaft (4) rotates clockwise, causing the push part (551) on the unlocking connector (55) to push against the secondary tongue connector (6), thereby causing the secondary locking tongue (2) to retract into the outer shell (1).

9. A lock for use with an external electronic lock according to claim 1, characterized in that, The secondary latch (2) is a slanted latch.

10. A lock for use with an external electronic lock according to claim 4, characterized in that, The drive shaft (4) is provided with a limiting block (41). The unlocking connector (55) and the locking connector (51) are respectively provided with a first limiting groove (552) and a second limiting groove (512) for the limiting block (41) to pass through. The first limiting groove (552) and the second limiting groove (512) each include a first holding part (100) and a second holding part (200). The drive shaft (4) rotates counterclockwise to drive the limiting block (41) to drive the first holding part (100) on the locking connector (51) to correspond with the first holding part (100) on the unlocking connector (55). The drive shaft (4) rotates clockwise to drive the limiting block (41) to drive the second holding part (200) on the unlocking connector (55) to correspond with the second holding part (200) on the locking connector (51).

Images