Lock

Abstract

The lock comprises a shell, a spring bolt, a motor and a radio frequency antenna, the spring bolt is movably installed on the shell and can move to a locking state and an unlocking state, and at least part of the spring bolt is located outside the shell in the locking state; the motor is arranged in the shell and is in transmission connection with the spring bolt; the radio frequency antenna is electrically connected with the motor and used for obtaining external energy and supplying power to the motor so that the motor can drive the spring bolt to move. The lock has the advantage of being high in safety.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of security and defense, and particularly relates to a lock. BACKGROUND

[0002] The plug-in core lock is usually installed on a door body, a cabinet door or the like. Taking the case where the plug-in core lock is installed on the door body as an example, in the process of use, the plug-in core lock drives the lock tongue to the outside of the shell to be clamped to the corresponding door frame, thereby locking the door body.

[0003] In the related art, some plug-in core locks are also provided with an electromagnetic module. After the electromagnetic module is powered on, the lock tongue can be driven to move towards the inside of the shell to be unlocked. However, the safety of the electromagnetic module is low. CONTENT OF THE UTILITY MODEL

[0004] The embodiments of the application provide a lock, which can improve the safety of the lock.

[0005] The embodiments of the application provide a lock, which comprises:

[0006] a shell;

[0007] a lock tongue movably installed on the shell and capable of moving to a locking state and an unlocking state, the lock tongue being at least partially located outside the shell in the locking state;

[0008] a motor provided in the shell, the motor being in transmission connection with the lock tongue; and

[0009] a radio frequency antenna electrically connected with the motor, the radio frequency antenna being used to acquire external energy and supply power to the motor, so that the motor can drive the lock tongue to move.

[0010] In some embodiments, the shell is also provided with a mounting cavity and a mounting opening in communication with each other, and the motor is installed in the mounting cavity;

[0011] the lock further comprises an anti-disassembly plate provided in the mounting cavity and located on the side of the motor facing the mounting opening, and the shell is connected to the anti-disassembly plate from the end of the anti-disassembly plate away from the mounting opening; and

[0012] a control circuit board electrically connected with the motor and the radio frequency antenna respectively, the control circuit board being configured to be loaded into the mounting cavity via the mounting opening, and the control circuit board and the motor are both located on the side of the anti-disassembly plate away from the mounting opening.

[0013] In some embodiments, the anti-disassembly plate is provided with a threaded hole.

[0014] The inner wall of the mounting cavity is provided with a first mounting hole, which is located on the side of the anti-tamper plate away from the mounting opening.

[0015] The lock also includes a first fastening bolt configured to pass through the first mounting hole from the side of the first mounting hole opposite to the threaded hole to be screwed into the threaded hole.

[0016] In some embodiments, the radio frequency antenna is disposed on the side of the tamper-evident plate facing the mounting port; or,

[0017] The radio frequency antenna is located on the side of the anti-tamper plate opposite to the mounting port.

[0018] In some embodiments, the peripheral surface of the motor is provided with a first positioning structure, and the inner wall of the housing is provided with a second positioning structure. The first positioning structure abuts against the second positioning structure to restrict the motor from rotating around the motor axis.

[0019] In some embodiments, the end of the latch facing the motor is provided with a transmission groove, and the output shaft of the motor is provided with a transmission protrusion. The transmission protrusion engages with the transmission groove so that the output shaft of the motor can drive the latch to rotate.

[0020] In some embodiments, the housing is further provided with a clearance groove; the locking tongue includes:

[0021] A connecting portion, wherein the connecting portion is provided with the transmission groove, so that the output shaft of the motor can drive the connecting portion to rotate; and,

[0022] The first protrusion is provided on the outer peripheral surface of the connecting part to rotate with the connecting part; when the latch is in the unlocked state, the first protrusion is accommodated in the clearance groove; when the latch is in the locked state, the first protrusion protrudes from the outer surface of the housing.

[0023] In some embodiments, the housing includes:

[0024] A first annular wall, wherein the inner circumferential surface of the first annular wall forms at least a partial mounting cavity, and the motor is disposed in the mounting cavity; and,

[0025] The second protrusion protrudes from the outer peripheral surface of the first annular wall and is provided with a second mounting hole and / or the clearance groove.

[0026] In some embodiments, the lock further includes an elastic element that is elastically connected to the bolt, the elastic element being used to drive the bolt to rotate toward the locked state.

[0027] In some embodiments, the latch is rotatably mounted on the housing, the latch is provided with a first limiting structure, and the housing is provided with a second limiting structure. The first limiting structure and the second limiting structure cooperate to limit the rotation angle of the latch.

[0028] Technical effects of the embodiments of this application:

[0029] On the one hand, the torque provided by the motor is usually greater than that provided by the electromagnetic module, so the motor in this embodiment can drive a larger bolt. On the other hand, since the lock in this application is equipped with a radio frequency antenna to obtain external energy, there is no need to build a battery inside the lock. Thus, with the limited size of the lock, a larger motor can be installed inside the lock to drive a larger bolt, or a larger bolt can be directly installed. Furthermore, by increasing the size of the bolt, the strength of the bolt can be improved, ultimately improving the security of the mortise lock. Attached Figure Description

[0030] The technical solution and its beneficial effects will become apparent from the following detailed description of specific embodiments of this application, in conjunction with the accompanying drawings.

[0031] Figure 1 This is a schematic diagram of the lock provided in an embodiment of this application.

[0032] Figure 2 for Figure 1 An exploded view of the first structure of the lock shown.

[0033] Figure 3 for Figure 2 Exploded view of some parts of the lock shown Figure 1 .

[0034] Figure 4 for Figure 1 An exploded view of the second structure of the lock shown.

[0035] Figure 5 for Figure 2 Exploded view of some parts of the lock shown Figure 2 .

[0036] Figure 6 for Figure 2 Exploded view of some parts of the lock shown Figure 3 .

[0037] Figure 7 for Figure 2 Exploded view of some parts of the lock shown Figure 4 .

[0038] Explanation of reference numerals in the attached figures:

[0039] 100. Housing; 11. First housing; 111. First annular wall; 1111. Second limiting structure; 112. Second outward protrusion; 1121. Alternating groove; 1122. Second mounting hole; 12. Second housing; 121. Mounting cavity; 122. Mounting opening; 123. First mounting hole; 124. Second positioning structure; 125. Second annular wall; 126. Second top wall; 13. First fastening bolt;

[0040] 200. Locking tongue; 21. Transmission groove; 22. Connecting part; 23. First outward protrusion; 24. First limiting structure;

[0041] 300. Motor; 31. First positioning structure; 32. Transmission protrusion;

[0042] 400. Radio frequency antenna;

[0043] 500. Anti-tamper plate; 51. Threaded hole; 52. Cable routing hole;

[0044] 600. Control circuit board;

[0045] 700. Cover;

[0046] 800. Elastic components. Detailed Implementation

[0047] The embodiments of this application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0048] To enable those skilled in the art to better understand the solutions of this application, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0049] In the embodiments of this application, "at least one" refers to one or more; "multiple" refers to two or more. In the description of this application, the terms "first," "second," "third," etc., are used only for the purpose of distinguishing descriptions and should not be construed as indicating or implying relative importance, nor should they be construed as indicating or implying order.

[0050] References such as “one embodiment” or “some embodiments” as described in this specification mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the terms “comprising,” “including,” “having,” and variations thereof, as used in this specification, mean “including, but not limited to,” unless otherwise specifically emphasized.

[0051] Please combine Figure 1 , Figure 2 and Figure 3 This application provides a lock, which includes a housing 100, a bolt 200, a motor 300, and a radio frequency antenna 400.

[0052] The latch 200 is movably mounted on the housing 100 and can move to a locked state and an unlocked state. In the locked state, the latch 200 is at least partially located outside the housing 100. A motor 300 is disposed within the housing 100 and is drively connected to the latch 200. A radio frequency antenna 400 is electrically connected to the motor 300 and is used to acquire external energy and supply power to the motor 300, enabling the motor 300 to drive the latch 200.

[0053] On the one hand, the torque provided by the motor 300 is usually greater than the torque provided by the electromagnetic module, so the motor 300 in this embodiment can drive the larger bolt 200. On the other hand, since the lock of this application is equipped with a radio frequency antenna 400 to obtain external energy, there is no need to build a battery inside the lock. Thus, with the limited size of the lock, a larger motor 300 can be set inside the lock to drive the larger bolt 200, or a larger bolt 200 can be directly set. Furthermore, by increasing the size of the bolt 200, the strength of the bolt 200 can be improved, ultimately improving the security of the mortise lock.

[0054] In some embodiments, the housing 100 further comprises an interconnected mounting cavity 121 and a mounting opening 122. The motor 300 is mounted within the mounting cavity 121. The lock also includes an anti-tamper plate 500 and a control circuit board 600. The anti-tamper plate 500 is disposed within the mounting cavity 121 and located on the side of the motor 300 facing the mounting opening 122. The housing 100 is configured to connect to the anti-tamper plate 500 from the side facing away from the mounting opening 122. The control circuit board 600 is electrically connected to both the motor 300 and the radio frequency antenna 400. The control circuit board 600 is configured to be inserted into the mounting cavity 121 via the mounting opening 122, and both the control circuit board 600 and the motor 300 are located on the side of the anti-tamper plate 500 facing away from the mounting opening 122.

[0055] Therefore, once the lock is installed on the target object such as the door, even if the mounting port 122 of the housing 100 is opened, the lock can still block the control circuit board 600 and the motor 300 through the anti-tamper plate 500, so as to prevent the user from directly operating the control circuit board 600 and / or the motor 300 to unlock the lock, thereby improving the security of the lock.

[0056] Furthermore, during the installation of the lock onto a target object such as a door, the side of the housing 100 with the mounting opening 122 usually faces outwards. Therefore, apart from the side of the housing 100 with the mounting opening 122 facing outdoors, the rest of the lock is concealed inside the door or indoors. In this case, since the housing 100 is configured to connect to the anti-tamper plate 500 from the end opposite to the mounting opening 122, even if the mounting opening 122 is opened while the lock is locked, the user cannot remove the anti-tamper plate 500. This prevents the user from operating the control circuit board 600 and / or the motor 300 to unlock the lock, thereby improving the lock's security.

[0057] For example, the tamper plate 500 is provided with a threaded hole 51. The inner wall of the mounting cavity 121 is provided with a first mounting hole 123, which is located on the side of the tamper plate 500 opposite to the mounting opening 122. The lock also includes a first fastening bolt 13, which is configured to pass through the first mounting hole 123 from the side of the first mounting hole 123 opposite to the threaded hole 51 to be screwed into the threaded hole 51.

[0058] For example, the outer surface of the housing 100 includes a stepped surface, which is located on the side of the anti-disassembly plate 500 away from the mounting opening 122, and the first mounting hole 123 is provided through the stepped surface.

[0059] The number of first mounting holes 123 can be one, or it can be multiple, such as two, three, four or even five. This application embodiment does not limit this.

[0060] When there are multiple first mounting holes 123, there are also multiple first fastening bolts 13 and threaded holes 51, so that multiple connections and fixations are formed between the anti-disassembly plate 500 and the housing 100, thereby improving the stability and reliability of the anti-disassembly plate 500 installation.

[0061] It is also understandable that when there are multiple first mounting holes 123, the multiple first mounting holes 123 can be arranged at intervals around the circumference of the housing 100 so that the force on the anti-tamper plate 500 is more even.

[0062] In some embodiments, the threaded hole 51 may be a blind hole, thereby preventing the end of the first fastening bolt 13 facing the mounting opening from protruding from the threaded hole 51.

[0063] Optionally, the threaded hole 51 can also be a through hole, and this application embodiment does not limit this.

[0064] In some implementations, the radio frequency antenna 400 may be disposed on the side of the tamper plate 500 facing the mounting port 122.

[0065] In practical use, taking the installation of the lock on the door as an example, the lock can face outwards from the side where the mounting port 122 is located (e.g., outdoors). Correspondingly, the radio frequency antenna 400 can be positioned on the side of the anti-tamper plate 500 facing the mounting port 122, allowing the radio frequency antenna 400 to be closer to the outdoors. This enables outdoor users to place mobile terminals such as mobile phones against the lock and closer to the radio frequency antenna 400, thereby improving the transmission efficiency when the mobile terminal communicates with the radio frequency antenna 400. Ultimately, this allows the radio frequency antenna 400 to more efficiently acquire the radio frequency energy emitted by the mobile terminal.

[0066] Optionally, the radio frequency antenna 400 can also be positioned on the side of the tamper-evident plate 500 opposite to the mounting port 122. Thus, the tamper-evident plate 500 can also provide protection for the radio frequency antenna 400.

[0067] For example, please continue to refer to Figure 4 The radio frequency antenna 400 can be set on the control circuit board 600.

[0068] In some embodiments, the lock also includes a cover 700, which covers the mounting opening 122 to close it. Furthermore, the cover 700 can provide some decoration and protection for the tamper plate 500.

[0069] In some embodiments, the housing 100 and the tamper-evident plate 500 can be made of metal, the cover 700 can be made of plastic, and the radio frequency antenna 400 is disposed between the cover 700 and the tamper-evident plate 500. Thus, on the one hand, even if the mounting port 122 is opened, it can prevent the user from forcibly damaging the tamper-evident plate 500 and the housing 100 to operate the control circuit board 600 and the motor 300; on the other hand, the plastic cover 700 can also allow the radio frequency antenna 400 to communicate with external mobile terminals such as mobile phones to transmit radio frequency energy.

[0070] Correspondingly, the anti-tamper plate 500 may be provided with a wiring hole 52, and the radio frequency antenna 400 and the control circuit board 600 are electrically connected through a wire passing through the wiring hole 52.

[0071] In some embodiments, the cover 700 and the housing 100 can be detachably connected by means of snap-fit, screw-fit, or other methods. For example, the cover 700 may be provided with a buckle that snaps into the inner wall of the mounting opening 122.

[0072] In some implementations, the radio frequency antenna 400 may include a Qi coil, an NFC (Near Field Communication) coil, and a Bluetooth antenna, etc., but this application embodiment does not limit this.

[0073] It is also understandable that the RF antenna 400 can be used to transmit data.

[0074] For example, after a mobile terminal such as a mobile phone establishes communication with the radio frequency antenna 400, on the one hand, the radio frequency antenna 400 can receive the radio frequency energy sent by the mobile terminal and transmit it to the control circuit board 600. The control circuit board 600 converts the radio frequency energy and supplies power to the motor 300. On the other hand, the radio frequency antenna 400 also receives the unlocking command sent by the mobile terminal and transmits it to the control circuit board 600. After receiving the unlocking command, the control circuit board 600 drives the motor 300 to drive the lock tongue 200 to move to the unlocked state.

[0075] Please continue to refer to this. Figure 5 In some embodiments, the peripheral surface of the motor 300 is provided with a first positioning structure 31. The inner wall of the housing 100 (such as the inner wall of the mounting cavity 121) is provided with a second positioning structure 124, and the first positioning structure 31 abuts against the second positioning structure 124 to restrict the motor 300 from rotating about the axis of the motor 300.

[0076] For example, the first positioning structure 31 includes a first positioning plane disposed on the periphery of the motor 300, and the second positioning structure 124 includes a second positioning plane disposed on the inner wall of the mounting cavity 121, with the first positioning plane abutting against the second positioning plane.

[0077] Furthermore, on the one hand, it can prevent the motor 300 from being mistakenly positioned and quickly positioned during the assembly process; on the other hand, it can prevent the motor 300 from vibrating and rotating during the operation of the lock, thereby improving the stability and reliability of the motor 300 installation.

[0078] Please refer to this as well. Figure 5 and Figure 6 In some embodiments, the end of the latch 200 facing the motor 300 is provided with a transmission groove 21, and the output shaft of the motor 300 is provided with a transmission protrusion 32. The transmission protrusion 32 is engaged with the transmission groove 21 so that the output shaft of the motor 300 can drive the latch 200 to rotate.

[0079] Therefore, during the assembly of the lock, the transmission protrusion 32 can be directly snapped into the transmission groove 21 to realize the transmission connection between the motor 300 and the lock tongue 200, so that the lock has the advantages of simple structure and easy assembly.

[0080] It is also understood that the transmission protrusion 32 may be integrally formed on the output shaft of the motor 300 or may be detachably mounted on the output shaft of the motor 300. This application embodiment does not limit this.

[0081] In some embodiments, the housing 100 is further provided with a recessed groove 1121. The latch 200 includes a connected portion 22 and a first protrusion 23. The connected portion 22 is drivenly connected to the motor 300. When the latch 200 is in the unlocked state, the first protrusion 23 is accommodated within the housing 100 (such as the recessed groove 1121 of the housing 100). When the latch 200 is in the locked state, the first protrusion 23 protrudes from the outer surface of the housing 100.

[0082] Taking the lock installed on a door as an example, when the door needs to be closed and locked, the latch 200 can move until the first protrusion 23 protrudes from the outer surface of the housing 100, thus being in a locked state, so that the first protrusion 23 of the latch 200 extends and locks onto the door frame or other objects. When the door needs to be unlocked and opened, the latch 200 can move until the first protrusion 23 is housed within the housing 100, thus being in an unlocked state, so that the first protrusion 23 of the latch 200 retracts from the door frame.

[0083] For example, the connecting portion 22 may be provided with a transmission groove 21 so that the output shaft of the motor 300 can drive the connecting portion 22 to rotate. Correspondingly, the first outward protrusion 23 may protrude from the outer peripheral surface of the connecting portion 22 to follow the rotation of the connecting portion 22.

[0084] In some embodiments, the housing 100 includes a first annular wall 111 and a second outward protrusion 112. The inner peripheral surface of the first annular wall 111 forms at least a partial mounting cavity 121. The motor 300 is disposed in the mounting cavity 121. The second outward protrusion 112 protrudes from the outer peripheral surface of the first annular wall 111, and the second outward protrusion 112 is provided with a second mounting hole 1122 and / or a clearance groove 1121.

[0085] When the second protrusion 112 is provided with a second mounting hole 1122, after the lock is installed on a target object such as a door, a pin can be inserted into the door and the second mounting hole 1122 to fix the lock on the door. When the second protrusion 112 is provided with a recessed groove 1121, the bolt 200 can be accommodated in the second protrusion 112 to make the lock in the unlocked state.

[0086] It is also understandable that, compared to the case where the radius of the housing 100 at all points along the first annular wall 111 is the same as the radius of the second outward protrusion 112, in this embodiment, the radius of the portion of the housing 100 without the second outward protrusion 112 along the first annular wall 111 can be made smaller, thereby reducing the volume of the lock. Furthermore, on the one hand, when installing the lock onto a target object such as a door, the volume of the required opening on the door can be reduced, thus lowering the difficulty of drilling the hole; on the other hand, the volume of the lock can be reduced, thereby lowering the manufacturing cost of the lock.

[0087] In some embodiments, the housing 100 may include a first housing 11 and a second housing 12. The first housing 11 has a first annular wall 111 and a first outward protrusion 23. The second housing 12 includes a second annular wall 125 and a second top wall 126. The second annular wall 125 is disposed around the second top wall 126. The end of the second annular wall 125 away from the second top wall 126 forms the aforementioned mounting opening 122. The first annular wall 111 is disposed on the side of the second top wall 126 opposite to the mounting opening 122, such that the mounting cavity 121 is partially formed on the inner peripheral surface of the second annular wall 125 and partially formed on the inner peripheral surface of the first annular wall 111.

[0088] The outer diameter of the second annular wall 125 can be larger than the inner diameter of the first annular wall 111, so that the surface of the second top wall 126 facing away from the mounting opening 122 (i.e., the outer surface) forms the aforementioned stepped surface. The control circuit board 600 and the anti-tamper plate 500 can be disposed inside the second annular wall 125, and the first mounting hole 123 can be disposed through the second top wall 126.

[0089] In some embodiments, the lock also includes an elastic element 800, which is elastically connected to the bolt 200 and is used to drive the bolt 200 to rotate toward the locked state.

[0090] Furthermore, on the one hand, the motor 300 can be used only to drive the bolt 200 to rotate to the unlocked state. Compared to the motor 300 also being used to drive the bolt 200 to rotate to the locked state, the embodiments of this application can reduce the power consumption of the motor 300, thereby allowing the radio frequency antenna 400, which has a lower energy transmission efficiency, to obtain a small amount of energy in a shorter time to drive the motor 300. On the other hand, after the motor 300 is powered off, the elastic element 800 can automatically drive the bolt 200 to move to the locked state, so as to prevent the lock from automatically unlocking after the motor 300 is powered off, thereby improving the security of the lock.

[0091] For example, the elastic element 800 may include a torsion spring. The torsion spring may be sleeved on the latch 200 (such as the connecting portion 22 of the latch 200). One torsion arm of the torsion spring is disposed on the latch 200, and the other torsion arm of the torsion spring is disposed on the housing 100 (such as the first housing 11).

[0092] Please continue to refer to this. Figure 7 In some embodiments, the latch 200 is rotatably mounted on the housing 100. The latch 200 is provided with a first limiting structure 24, and the housing 100 is provided with a second limiting structure 1111. The first limiting structure 24 and the second limiting structure 1111 cooperate to limit the rotation angle of the latch 200, thereby improving the stroke accuracy of the latch 200 rotation and ensuring that the latch 200 can rotate more accurately to the locked state and the unlocked state.

[0093] For example, the first limiting structure 24 can be a limiting protrusion, and the second limiting structure 1111 can be a limiting groove.

[0094] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0095] The locks provided in the embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are only for the purpose of helping to understand the methods and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A lock, characterized in that, include: case; A locking tongue, which is movably mounted on the housing and can move to a locked state and an unlocked state, wherein the locking tongue is at least partially located outside the housing in the locked state; An electric motor is disposed within the housing and is connected to the locking tongue via a transmission connection. and, A radio frequency antenna is electrically connected to the motor. The radio frequency antenna is used to acquire external energy and supply power to the motor so that the motor can drive the locking tongue to move.

2. The lock according to claim 1, characterized in that, The housing is also provided with an interconnected mounting cavity and mounting port, and the motor is mounted in the mounting cavity; The lock also includes an anti-disassembly plate, which is disposed in the mounting cavity and located on the side of the motor facing the mounting opening. The housing is configured to be connected to the anti-disassembly plate from the side of the anti-disassembly plate away from the mounting opening. and, A control circuit board is electrically connected to the motor and the radio frequency antenna respectively. The control circuit board is configured to be inserted into the mounting cavity via the mounting port, and both the control circuit board and the motor are located on the side of the anti-tamper plate away from the mounting port.

3. The lock according to claim 2, characterized in that, The anti-disassembly plate is provided with threaded holes; The inner wall of the mounting cavity is provided with a first mounting hole, which is located on the side of the anti-tamper plate away from the mounting opening. The lock also includes a first fastening bolt configured to pass through the first mounting hole from the side of the first mounting hole opposite to the threaded hole to be screwed into the threaded hole.

4. The lock according to claim 2, characterized in that, The radio frequency antenna is positioned on the side of the tamper-evident plate facing the mounting opening; or, The radio frequency antenna is located on the side of the anti-tamper plate opposite to the mounting port.

5. The lock according to any one of claims 1 to 3, characterized in that, The motor has a first positioning structure on its peripheral surface and a second positioning structure on the inner wall of the housing. The first positioning structure abuts against the second positioning structure to restrict the motor from rotating around its axis.

6. The lock according to any one of claims 1 to 3, characterized in that, The locking tongue has a transmission groove at one end facing the motor, and the output shaft of the motor has a transmission protrusion. The transmission protrusion engages with the transmission groove so that the output shaft of the motor can drive the locking tongue to rotate.

7. The lock according to claim 6, characterized in that, The housing is also provided with a clearance groove; the locking tongue includes: A connecting portion, wherein the connecting portion is provided with the transmission groove, so that the output shaft of the motor can drive the connecting portion to rotate; and, The first protrusion is provided on the outer peripheral surface of the connecting part to rotate with the connecting part; when the latch is in the unlocked state, the first protrusion is accommodated in the clearance groove; when the latch is in the locked state, the first protrusion protrudes from the outer surface of the housing.

8. The lock according to claim 7, characterized in that, The housing includes: A first annular wall, wherein the inner circumferential surface of the first annular wall forms at least a partial mounting cavity, and the motor is disposed in the mounting cavity; and, The second protrusion protrudes from the outer peripheral surface of the first annular wall and is provided with a second mounting hole and / or the clearance groove.

9. The lock according to any one of claims 1 to 3, characterized in that, The lock also includes an elastic element, which is elastically connected to the bolt, and the elastic element is used to drive the bolt to rotate toward the locked state.

10. The lock according to any one of claims 1 to 3, characterized in that, The latch is rotatably mounted on the housing. The latch is provided with a first limiting structure, and the housing is provided with a second limiting structure. The first limiting structure and the second limiting structure cooperate to limit the rotation angle of the latch.

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