Electronic lock

Abstract

The utility model provides an electronic lock. The electronic lock comprises a shell assembly; an electric motor accommodated in the housing assembly, capable of rotating an output shaft of the electric motor in a first direction in response to input of positive electromotive force, and capable of rotating the output shaft in a second direction opposite to the first direction in response to input of negative electromotive force; the semi-linkage gear assembly is contained in the shell assembly and suitable for transmitting power output by the output shaft to a lock rod of the electronic lock so that the lock rod can stretch out and retract, and therefore the electronic lock can be switched between a locking state and an unlocking state. The semi-linkage gear assembly is configured to enable the output shaft to transmit power through the semi-linkage gear assembly after passing through an idling stroke so as to enable the lock rod to be converted from the stretching-out state to the retracting state.

Description

Technical Field

[0001] The present application relates to an electronic lock, and in particular to an electronic lock comprising a half-linked gear assembly. Background Art

[0002] In existing electronic locks, when the lock rod moves to the locked position, the electric motor is powered off. This is because the electric motor generates a momentary back electromotive force at the moment of power failure, causing the electric motor to rotate in the opposite direction, thereby retracting the lock rod a certain distance, thereby reducing the security of the electronic lock. Utility Model Content

[0003] In order to overcome at least one of the above and other problems and defects in the prior art, the present application is proposed.

[0004] The present application provides an electronic lock, which includes: a housing assembly; an electric motor, which is accommodated in the housing assembly and can rotate the output shaft of the electric motor in a first direction in response to an input of a positive electromotive force, and can rotate the output shaft in a second direction opposite to the first direction in response to an input of a negative electromotive force; and a semi-linked gear assembly, which is accommodated in the housing assembly and is suitable for transmitting power output from the output shaft to a lock rod of the electronic lock to extend and retract the lock rod, thereby switching the electronic lock between a locked state and an unlocked state; wherein the semi-linked gear assembly is configured to transmit power through the semi-linked gear assembly after the output shaft passes through an idling stroke to switch the lock rod from an extended state to a retracted state.

[0005] In some embodiments, the semi-coupled gear assembly is configured to enable the output shaft to transmit power through the semi-coupled gear assembly after another idle stroke to convert the locking bar from the retracted state to the extended state.

[0006] In some embodiments, the half-linked gear assembly includes: a rack connected to the locking rod and causing the locking rod to switch between the extended state and the retracted state; a first half-linked gear, meshing with the rack to convert the rotational motion of the first half-linked gear into a linear reciprocating motion of the rack; and a second half-linked gear, being in a half-linked connection state with the first half-linked gear and suitable for rotating coaxially with the first half-linked gear, wherein one of the first half-linked gear and the second half-linked gear includes a first stop portion protruding from the end face of its main body, and the first stop portion is eccentrically arranged relative to the center of the circle of the half-linked gear; and the other of the first half-linked gear and the second half-linked gear includes a groove recessed from the end face of its main body, the groove being an arc centered on the center of the circle of the half-linked gear and including a second stop portion, wherein the first stop portion is suitable for moving in the groove.

[0007] In some embodiments, when the first stop portion abuts against the second stop portion, the first half-linked gear and the second half-linked gear rotate coaxially, thereby transmitting the power of the output shaft through the half-linked gear assembly to the locking rod; and when the first stop portion is not in contact with the second stop portion and moves in the groove, the rotation of the second half-linked gear cannot be transmitted to the first half-linked gear, thereby the power of the output shaft cannot be transmitted through the half-linked gear assembly, so that the output shaft is in an idling stroke.

[0008] In some embodiments, one of the first half-linked gear and the second half-linked gear also includes a cylindrical recess located at its center; the other of the first half-linked gear and the second half-linked gear also includes a cylindrical protruding shaft located at its center, the cylindrical protruding shaft protruding beyond the end face of the half-linked gear and suitable for being inserted into the cylindrical recess, so that the first half-linked gear and the second half-linked gear are coaxially arranged.

[0009] In some embodiments, the first half-linked gear includes the first stop portion and the cylindrical recess, and the first stop portion is in an arc shape around the edge of the cylindrical recess; and the second half-linked gear includes the groove and the cylindrical protruding shaft, and the groove is in an arc shape around the cylindrical protruding shaft, wherein the arc length of the first stop portion is less than the arc length of the groove.

[0010] In some embodiments, the second stopper is fan-shaped and spans the groove to connect to the cylindrical protruding shaft.

[0011] In some embodiments, the cylindrical recess is in the form of a blind hole for receiving lubricant.

[0012] In some embodiments, the half-linked gear assembly also includes a shaft gear, wherein the shaft gear includes a shaft rod spanning the rack and a first gear portion and a second gear portion located at both ends of the shaft rod, wherein the first gear portion is engaged with the second half-linked gear, wherein the rotation axis of the shaft gear is perpendicular to the linear reciprocating motion direction of the rack.

[0013] In some embodiments, the semi-coupled gear assembly also includes: a screw gear, which is coaxially connected and rotates with the output shaft of the electric motor; a helical gear, which is suitable for engaging with the screw gear; and a spur gear, which is suitable for being coaxially connected and rotated with the helical gear and engaging with the second gear portion of the shaft gear.

[0014] In some embodiments, the helical gear is integral with the spur gear, and a common rotation axis of the helical gear and the spur gear is perpendicular to the rotation axis of the screw gear and parallel to the rotation axis of the shaft gear.

[0015] In some embodiments, the first half gear, the second half gear, the first gear portion, and the second gear portion are each of a spur gear type.

[0016] In some embodiments, the positions of the first half-linked gear, the second half-linked gear, the first gear portion, the second gear portion, the spur gear, the helical gear and the screw gear relative to the housing assembly are fixed; and the rack and the locking rod can reciprocate relative to the housing assembly.

[0017] In some embodiments, the housing assembly includes a first housing and a second housing, wherein the locking bar is adapted to move through the first housing.

[0018] In some embodiments, the electronic lock further includes: a power line for providing the positive electromotive force or the negative electromotive force to the electric motor; a switch connected to the power line and the electric motor and configured to switch the positive electromotive force and the negative electromotive force and to cut off power to the electric motor.

[0019] According to various embodiments of the present application, the provided electronic lock includes a semi-coupled gear assembly, so that the output shaft of the electric motor can only transmit power through the semi-coupled gear assembly to the lock rod after an idle stroke, thereby causing the lock rod to transition from an extended state to a retracted state. In this way, when the electric motor generates a transient back electromotive force at the moment of power failure, causing the output shaft of the electric motor to rotate in the opposite direction, the existence of the idle stroke prevents the lock rod from retracting. Only when the electric motor receives a continuous input of back electromotive force can the lock rod be retracted to reach the unlocked state, thereby improving the security of the electronic lock.

[0020] Other objects and advantages of the present application will be apparent from the following description of the present application with reference to the accompanying drawings, and will help to provide a comprehensive understanding of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings of the embodiments will be briefly described below. It should be noted that the drawings described below only relate to some embodiments of the present application and are not intended to limit the present application. In the drawings:

[0022] Figure 1 is a perspective view of an electronic lock according to the present application.

[0023] Figure 2 yes Figure 1 A perspective view of the electronic lock is shown with the first housing removed.

[0024] Figure 3 It is from Figure 2 Perspective views of the electronic lock with the first housing and the second housing removed, viewed from different angles.

[0025] Figure 4 yes Figure 3 A top view of the electronic lock shown in the locked state.

[0026] Figure 5 yes Figure 3 A top view of the electronic lock shown in the unlocked state.

[0027] Figure 6 2 is a perspective view of a first half linkage gear and a second half linkage gear assembled together in an electronic lock according to the present application.

[0028] Figure 7 2 is a perspective view of a first half linkage gear and a second half linkage gear separated from each other of an electronic lock according to the present application.

[0029] Figure 8 This is a front view of the first half linkage gear and the second half linkage gear of the electronic lock according to the present application. DETAILED DESCRIPTION

[0030] Hereinafter, embodiments of the present application will be described with reference to the accompanying drawings. The same reference numerals and symbols shown in the drawings of the present application refer to elements or components that perform substantially the same functions.

[0031] In addition, the terms used herein are used to describe embodiments and are not intended to limit and / or constrain this application. Unless the context clearly indicates otherwise, the singular forms "a", "an", "the", and "the" are also intended to include plural forms. In this application, "including", "comprising", "having" and similar terms are used to list features, quantities, steps, operations, elements, parts, or combinations thereof, but do not exclude the presence or addition of one or more of the features, quantities, steps, operations, elements, parts, or combinations thereof.

[0032] Although the terms "first," "second," "third," etc. may be used herein to describe a variety of different elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first element may be referred to as a second element, and a second element may be referred to as a first element, without departing from the scope of this application. The term "and / or" includes multiple combinations of associated items or any one of multiple associated items.

[0033] In the following detailed description, for ease of explanation, numerous specific details are set forth to provide a comprehensive understanding of the disclosed embodiments. However, it will be apparent that one or more embodiments may be practiced without these specific details. In other cases, well-known structures and devices are shown schematically to simplify the accompanying drawings.

[0034] An embodiment of the present application provides an electronic lock, which includes a housing assembly, an electric motor, and a semi-linked gear assembly. The electric motor is housed in the housing assembly and is capable of rotating the output shaft of the electric motor in a first direction in response to an input of a positive electromotive force, and is capable of rotating the output shaft in a second direction opposite to the first direction in response to an input of a negative electromotive force. The semi-linked gear assembly is housed in the housing assembly and is suitable for transmitting power output from the output shaft to a lock rod of the electronic lock to extend and retract the lock rod, thereby switching the electronic lock between a locked state and an unlocked state. The semi-linked gear assembly is configured so that after the output shaft passes through an idling stroke, power is transmitted through the semi-linked gear assembly to switch the lock rod from an extended state to a retracted state.

[0035] like Figure 1As shown, the electronic lock according to the present application includes a housing assembly for accommodating its various components, the housing assembly including a first housing 11 and a second housing 12, wherein the lock rod 14 of the electronic lock is adapted to move through the first housing 11 to switch between an extended state and a retracted state. In some embodiments, when the electronic lock is in a locked state, the lock rod 14 in the retracted state is completely retracted into the housing assembly. In other embodiments, when the electronic lock is in a locked state, the lock rod 14 in the retracted state is not completely retracted into the housing assembly. That is, a portion of the lock rod 14 in the retracted state is still located outside the housing assembly, but the length of the portion of the lock rod 14 in the retracted state that is located outside the housing assembly is less than the length of the portion of the lock rod 14 in the extended state that is located outside the housing assembly.

[0036] The electronic lock according to the present application includes an electric motor 13 that converts electricity into mechanical power. The electric motor 13 is capable of rotating its output shaft 131 in a first direction in response to the input of a positive electromotive force, and is capable of rotating the output shaft 131 in a second direction in response to the input of a negative electromotive force. The second direction is opposite to the first direction. For example, the first direction and the second direction can be clockwise and counterclockwise, respectively. In other words, the electric motor 13 is capable of rotating in a first direction or a second direction opposite to each other, depending on the input of a positive electromotive force or a negative electromotive force. If a positive electromotive force is continuously input to the electric motor 13, the output shaft 131 rotates continuously in the first direction. If a negative electromotive force is continuously input to the electric motor 13, the output shaft 131 rotates continuously in the second direction.

[0037] like Figure 2 As shown, the electronic lock according to the present application may include a power cord 15 and a switch 16. The power cord 15 can continuously provide power to the electric motor 13, for example, providing a positive electromotive force or a negative electromotive force. The switch 16 can be connected to the power cord 15 and the electric motor 13 and is configured to switch between positive and negative electromotive forces to change the rotational direction of the output shaft 131. The switch 16 can de-energize the electric motor 13, thereby positioning the lock bar 14 in an extended state or a retracted state.

[0038] The rotational power output by the output shaft 131 can reach the lock rod 14 after passing through the semi-coupled gear assembly, thereby switching the lock rod between the extended state and the retracted state, and further switching the electronic lock between the locked state and the unlocked state.

[0039] The semi-linked gear assembly is accommodated in the housing assembly and is connected between the output shaft 131 and the lock rod 14 to transmit the power output by the electric motor 13. According to various embodiments of the present application, the semi-linked gear assembly can be configured so that the output shaft 131 transmits power through the semi-linked gear assembly after an idling stroke so that the lock rod 14 is converted from the extended state to the retracted state. In addition, the semi-linked gear assembly can also be configured so that the output shaft 131 transmits power through the semi-linked gear assembly after another idling stroke so that the lock rod 14 is converted from the retracted state to the extended state. In an embodiment, the rotation direction of the idling stroke through which the lock rod 14 is converted from the extended state to the retracted state is opposite to the rotation direction of the other idling stroke through which the lock rod 14 is converted from the retracted state to the extended state.

[0040] As used herein, the term "idle travel" refers to a state in which the output shaft 131 of the electric motor 13 is able to rotate but is unable to drive the lock rod 14 to move. Specifically, before the half-gear assembly can transmit the power generated by the electric motor 13 to the lock rod 14, the rotation of one of the first and second half-gears 22 and 23 cannot drive the rotation of the other. Therefore, although the output shaft 131 of the electric motor 13 rotates, this rotational power cannot be transmitted through the half-gear assembly (particularly through the first and second half-gears 22 and 23) to reach the lock rod 14, causing it to extend or retract. After this idle travel, the rotational power of the output shaft 131 can be transmitted through the half-gear assembly to reach the lock rod 14, causing it to extend or retract. Due to the idle travel caused by the half-gear assembly, the lock rod 14 can delay transitioning between the extended and retracted states in response to changes in the rotational direction of the output shaft 131. In other words, when the electric motor 13 changes the direction of rotation of the output shaft 131 due to a change in electromotive force, the lock lever 14 does not immediately shift from the extended state to the retracted state, or vice versa, in response to the change in the rotational direction of the output shaft 131. Furthermore, when the output shaft 131 shifts from stationary to rotating in response to the input electromotive force, the lock lever 14 does not immediately move, i.e., its extension or retraction is delayed. In other words, the semi-clutch gear assembly temporarily interrupts the transmission of power, preventing it from being transmitted to the lock lever 14 via the semi-clutch gear assembly, thereby keeping the lock lever stationary.

[0041] In the prior art, when the electric motor generates an instantaneous back electromotive force at the moment of power failure, causing the output shaft to rotate in the opposite direction, the lock rod will immediately switch from the extended state to the retracted state, thereby causing the lock rod to retract a certain distance, thereby reducing the security of the electronic lock.

[0042] In contrast, in this application, when the electric motor 13 generates a momentary back electromotive force at the moment of power failure, causing the output shaft 131 to rotate in the opposite direction, the idling stroke prevents power from being transmitted to the lock rod 14 via the semi-clutch gear assembly, preventing the lock rod from retracting. Only when the electric motor 13 receives a continuous input of back electromotive force can the lock rod 14 be fully retracted, allowing the electronic lock to be unlocked, thereby improving the security of the electronic lock.

[0043] According to an embodiment of the present application, the half-linked gear assembly may include a rack 21, a first half-linked gear 22, and a second half-linked gear 23. In some cases, the electric motor may directly drive the second half-linked gear 23, thereby switching the locking bar 14 between the extended and retracted states. In other cases, the electric motor may indirectly drive the second half-linked gear 23, that is, another transmission device, such as a gear, may be provided between the electric motor and the second half-linked gear 23.

[0044] The rack 21 can be connected to the locking rod 14 and promote the locking rod to switch between the extended state and the retracted state. The rack 21 can perform linear reciprocating motion, thereby driving the locking rod 14 to perform linear reciprocating motion, thereby causing the locking rod 14 to switch between the extended state and the retracted state. Figures 2 to 5 As best shown, a row of teeth is provided on one side of the main body of the rack 21, and one end of the rack 21 is connected to the locking bar 14. In the illustrated embodiment, the locking bar 14 is detachably connected to the rack 21. In other embodiments, the locking bar 14 can be permanently connected to the rack 21.

[0045] The first half-linked gear 22 can mesh with the rack 21, in particular, with the teeth located on the main portion of the rack 21, thereby converting the rotational motion of the first half-linked gear 22 into a linear reciprocating motion of the rack 21. The second half-linked gear 23 is arranged side by side with the first half-linked gear 22 and is in a semi-linked connection state, and is adapted to rotate coaxially with the first half-linked gear 22.

[0046] In some embodiments, one of the first half linkage gear 22 and the second half linkage gear 23 may include a first stopper 221 protruding from an end surface of its body. In the illustrated embodiment, the first half linkage gear 22 may include the first stopper 221. In other embodiments, the second half linkage gear 23 may include the first stopper. Figure 7 and Figure 8 As shown, the first stopper 221 is eccentrically arranged relative to the center of the half-linked gear. In other words, the first stopper 221 is not located at the center of the half-linked gear and can rotate around the center.

[0047] The other of the first half linkage gear 22 and the second half linkage gear 23 may include a groove 230 recessed from the end surface of its body. In the illustrated embodiment, the second half linkage gear 23 may include the groove 230. In other embodiments, the first half linkage gear 22 may include a groove. Figure 7 and Figure 8 As best shown, the groove 230 is in the shape of an arc centered on the center of the second half gear and includes a second stop 231. In the illustrated embodiment, the second stop 231 is formed by the end of the arc-shaped groove 230. In other embodiments, the groove 230 may be annular about the center of rotation, and the second stop 231 may be a raised portion located within the groove 230.

[0048] In the illustrated embodiment, the first stopper 221 can move within the groove 230. In other words, when the first half-linked gear 22 and the second half-linked gear 23 rotate relative to each other, the first stopper 221 of the first half-linked gear 22 can move within the groove 230 of the second half-linked gear 23. In this case, the first stopper 221 does not contact the second stopper 231, and the rotation of the second half-linked gear 23 cannot be transmitted to the first half-linked gear 22. As a result, the power of the output shaft 131 cannot be transmitted through the half-linked gear assembly, causing the output shaft 131 to be in an idle stroke.

[0049] When the first stop portion 221 abuts against the second stop portion 231, the second stop portion 231 can push the first stop portion 221, so that the first half-linked gear 22 and the second half-linked gear 23 can rotate coaxially, so that the power of the output shaft 131 of the electric motor is transmitted through the half-linked gear assembly to reach the locking rod 14.

[0050] One of the first half-linked gear 22 and the second half-linked gear 23 may include a cylindrical recess 222 located at the center thereof. In the illustrated embodiment, the first half-linked gear 22 may include a cylindrical recess 222. In some embodiments, the cylindrical recess 222 is in the form of a blind hole to accommodate a lubricant, such as grease. The side of the first half-linked gear 22 opposite to the cylindrical recess 222 may include a protrusion that is suitable for being installed in the housing assembly so as to fix the position of the first half-linked gear 22 relative to the housing assembly. In other embodiments, the cylindrical recess 222 may be in the form of a through hole, through which a cylindrical protruding shaft 232 described later may pass to be installed in the housing assembly, thereby fixing the position of the first half-linked gear 22 and the second half-linked gear 23 relative to the housing assembly.

[0051] The other of the first half-linked gear 22 and the second half-linked gear 23 may include a cylindrical protruding shaft 232 located at its center. In the illustrated embodiment, the second half-linked gear 23 includes the cylindrical protruding shaft 232. The cylindrical protruding shaft 232 may protrude beyond the end surface of the second half-linked gear 23 and is adapted to be inserted into the cylindrical recess 222 located in the first half-linked gear 22, such that the first half-linked gear 22 and the second half-linked gear 23 are coaxially arranged. The side of the second half-linked gear 23 opposite the cylindrical protruding shaft 232 may include a protrusion adapted to be mounted in the housing assembly so as to secure the position of the second half-linked gear 23 relative to the housing assembly.

[0052] like Figure 7 and Figure 8 As shown, the first half linkage gear 22 may include a first stopper 221 and a cylindrical recess 222, and the first stopper 221 is in an arc shape around the edge of the cylindrical recess 222. The second half linkage gear 23 may include a groove 230 and a cylindrical protruding shaft 232, and the groove 230 is in an arc shape around the cylindrical protruding shaft 232. Figure 8 As shown, the arc length of the first stopper 221 is smaller than the arc length of the groove 230 , so that the first stopper 221 can move in the groove 230 .

[0053] like Figure 7 and Figure 8 As best shown, the second stopper 231 may be fan-shaped and span the groove 230 to be connected to the cylindrical protruding shaft 232 , thereby increasing the robustness of the second half linkage gear 23 .

[0054] In some embodiments of the present application, the half-linked gear assembly may further include a shaft gear. Figures 2 to 5 As best shown, the shaft gear may include a shaft 29 extending across the rack 21, and a first gear portion 24 and a second gear portion 25 located at either end of the shaft 29. As shown, the first gear portion 24 may mesh with the second half gear 23, thereby driving the second half gear 23 to rotate. The axis of rotation of the shaft gear may be perpendicular to the linear reciprocating motion direction of the rack 21.

[0055] In some cases, the electric motor may directly drive the second gear portion 25 to switch the locking bar 14 between the extended state and the retracted state.

[0056] In other cases, the electric motor may indirectly drive the second gear portion 25, that is, there may be other transmission devices, such as gears, between the electric motor and the second gear portion 25. Figures 2 to 5As best shown, the semi-linked gear assembly may further include: a screw gear 28, which is coaxially connected to and rotates with the output shaft 131 of the electric motor 13; a helical gear 27, which is adapted to mesh with the screw gear 28; and a spur gear 26, which is adapted to coaxially connect to and rotate with the helical gear 27 and mesh with the second gear portion 25 of the shaft gear. In some embodiments, the helical gear 27 may be integral with the spur gear 28. In other embodiments, the helical gear 27 may be separate from the spur gear 28 and may be assembled together, for example, by being keyed to each other, so that they rotate together.

[0057] In the illustrated embodiment, when the first stop portion 221 of the first half-linked gear 22 abuts the second stop portion 231 of the second half-linked gear 23, the power of the output shaft 131 of the electric motor 13 is first transmitted to the screw gear 28, and then transmitted in sequence through the bevel gear 27, the spur gear 26, the second gear portion 25, the first gear portion 24, the second half-linked gear 23, the first half-linked gear 22 and the rack 21, and then transmitted to the locking rod 14, thereby extending or retracting the locking rod 14.

[0058] like Figures 2 to 5 As shown, the common rotation axis of the helical gear 27 and the spur gear 28 is perpendicular to the rotation axis of the screw gear 28 and parallel to the rotation axis of the shaft gear. Based on this arrangement, the half-linked gear assembly can become more compact, thereby reducing the volume of the electronic lock.

[0059] In the illustrated embodiment, the first half gear 22, the second half gear 23, the first gear portion 24, and the second gear portion 25 are each spur gears. The transmission ratios among the rack 21, the first half gear 22, the second half gear 23, the first gear portion 24, the second gear portion 25, the spur gear 26, the helical gear 27, and the screw gear 28 can be selected as appropriate and are not limited in this application.

[0060] In addition, the positions of the first half linkage gear 22, the second half linkage gear 23, the first gear portion 24, the second gear portion 25, the spur gear 26, the helical gear 27 and the screw gear 28 relative to the housing assembly are fixed; and the rack 21 and the lock rod 14 can reciprocate relative to the housing assembly. Figure 4 and Figure 5 As best shown, the position of the rack 21 and the locking bar 14 relative to the electric motor 13 fixed to the housing assembly can be changed.

[0061] As described above, the provided electronic lock includes a semi-coupled gear assembly, which allows the electric motor's output shaft to transmit power through the semi-coupled gear assembly to the lock rod only after an idle stroke, thereby causing the lock rod to transition from an extended state to a retracted state. In this way, when the electric motor generates a transient back electromotive force at the moment of power failure, causing the electric motor's output shaft to rotate in the opposite direction, the idle stroke prevents the lock rod from retracting. Only when the electric motor receives a continuous input of back electromotive force can the lock rod retract to reach the unlocked state, thereby improving the security of the electronic lock.

[0062] Those skilled in the art will appreciate that the embodiments described above are exemplary and that they may be improved upon. The structures described in the various embodiments may be freely combined without causing any conflict in structure or principle.

[0063] The above embodiments are merely illustrative of the principles and structures of the present application and are not intended to limit the present application. Those skilled in the art should understand that any changes and improvements made to the present application without departing from the overall concept of the present application are within the scope of the present application. The scope of protection of the present application shall be based on the scope defined in the claims of the present application.

Claims

1. An electronic lock, characterized in that: include: housing assembly; an electric motor (13) housed in the housing assembly, capable of rotating an output shaft (131) of the electric motor in a first direction in response to an input of a positive electromotive force, and capable of rotating the output shaft (131) in a second direction opposite to the first direction in response to an input of a negative electromotive force; and a semi-linked gear assembly housed in the housing assembly and adapted to transmit power output from the output shaft (131) to a lock rod (14) of the electronic lock to extend and retract the lock rod, thereby switching the electronic lock between a locked state and an unlocked state; The semi-linked gear assembly is configured such that the output shaft (131) transmits power through the semi-linked gear assembly after an idling stroke to convert the locking rod (14) from an extended state to a retracted state.

2. The electronic lock according to claim 1, characterized in that: The semi-linked gear assembly is configured to enable the output shaft (131) to transmit power through the semi-linked gear assembly after another idling stroke so as to convert the locking rod (14) from the retracted state to the extended state.

3. The electronic lock according to claim 2, characterized in that: The semi-linked gear assembly comprises: a rack (21) connected to the locking rod (14) and causing the locking rod to switch between the extended state and the retracted state; a first half-linked gear (22) meshing with the rack (21) to convert the rotational motion of the first half-linked gear into a linear reciprocating motion of the rack; and The second half-linked gear (23) is in a half-linked connection state with the first half-linked gear (22) and is adapted to rotate coaxially with the first half-linked gear. wherein one of the first half-linked gear (22) and the second half-linked gear (23) comprises a first stopper (221) protruding from an end surface of its main body, the first stopper being eccentrically arranged relative to the center of the circle of the half-linked gear; and The other of the first half-linked gear (22) and the second half-linked gear (23) includes a groove (230) recessed from the end surface of its body, the groove being in the form of an arc centered at the center of the half-linked gear and including a second stopper (231). Wherein, the first stop portion (221) is suitable for moving in the groove (230).

4. The electronic lock according to claim 3, characterized in that: When the first stopper (221) abuts against the second stopper (231), the first half-linked gear (22) and the second half-linked gear (23) rotate coaxially, whereby the power of the output shaft (131) is transmitted through the half-linked gear assembly to the locking rod (14); and When the first stop portion (221) is not in contact with the second stop portion (231) and moves in the groove (230), the rotation of the second half-linked gear (23) cannot be transmitted to the first half-linked gear (22), thereby the power of the output shaft (131) cannot be transmitted through the half-linked gear assembly, so that the output shaft (131) is in an idling stroke.

5. The electronic lock according to claim 4, characterized in that: One of the first half-linked gear (22) and the second half-linked gear (23) further includes a cylindrical recess (222) located at the center thereof; The other of the first half-linked gear (22) and the second half-linked gear (23) further includes a cylindrical protruding shaft (232) located at the center thereof, wherein the cylindrical protruding shaft protrudes beyond the end face of the half-linked gear and is suitable for being inserted into the cylindrical recess (222), so that the first half-linked gear (22) and the second half-linked gear (23) are coaxially arranged.

6. The electronic lock according to claim 5, characterized in that: The first half-linked gear (22) comprises the first stopper (221) and the cylindrical recess (222), and the first stopper (221) is in an arc shape surrounding the edge of the cylindrical recess (222); as well as The second half-linked gear (23) comprises the groove (230) and the cylindrical protruding shaft (232), and the groove (230) is in an arc shape surrounding the cylindrical protruding shaft (232). Wherein, the arc length of the first stop portion (221) is smaller than the arc length of the groove (230).

7. The electronic lock according to claim 6, characterized in that: The second stopper (231) is fan-shaped and spans the groove (230) to connect to the cylindrical protruding shaft (232).

8. The electronic lock according to claim 5, characterized in that: The cylindrical recess (222) is in the form of a blind hole for receiving lubricant.

9. The electronic lock according to any one of claims 3 to 8, characterized in that: The semi-linked gear assembly also includes a shaft gear, The shaft gear includes a shaft (29) spanning the rack (21) and a first gear portion (24) and a second gear portion (25) located at both ends of the shaft (29), wherein the first gear portion (24) is engaged with the second half-linked gear (23). The rotation axis of the shaft gear is perpendicular to the linear reciprocating motion direction of the rack (21).

10. The electronic lock according to claim 9, characterized in that: The semi-linked gear assembly also includes: a screw gear (28) coaxially connected to and rotating with the output shaft (131) of the electric motor (13); a helical gear (27) adapted to mesh with the screw gear (28); and A spur gear (26) is adapted to be coaxially connected to and rotate with the helical gear (27) and to mesh with the second gear portion (25) of the shaft gear.

11. The electronic lock according to claim 10, characterized in that: The helical gear (27) is integrated with the spur gear (26), and a common rotation axis of the helical gear (27) and the spur gear (26) is perpendicular to the rotation axis of the screw gear (28) and parallel to the rotation axis of the shaft gear.

12. The electronic lock according to claim 11, characterized in that: The first half-linked gear (22), the second half-linked gear (23), the first gear portion (24) and the second gear portion (25) are respectively of spur gear type.

13. The electronic lock according to claim 12, characterized in that: The positions of the first half-linked gear (22), the second half-linked gear (23), the first gear portion (24), the second gear portion (25), the spur gear (26), the helical gear (27) and the screw gear (28) relative to the housing assembly (11, 12) are fixed; and The rack (21) and the locking rod (14) are capable of reciprocating motion relative to the housing assembly (11, 12).

14. The electronic lock according to any one of claims 1 to 8 and 10 to 13, characterized in that The housing assembly (11, 12) comprises a first housing (11) and a second housing (12), wherein the locking rod (14) is adapted to move through the first housing (11).

15. The electronic lock according to any one of claims 1 to 8 and 10 to 13, characterized in that The electronic lock further comprises: a power line (15) for providing the positive electromotive force or the negative electromotive force to the electric motor (13); A switch (16) is connected to the power line (15) and the electric motor (13), and is configured to switch the positive electromotive force and the negative electromotive force and to cut off power to the electric motor (13).

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