Electronic lock

Abstract

When the power supply to the electric motor of an electronic lock is interrupted, a momentary back electromotive force is generated in the electric motor, causing it to reverse and retract the lock lever by a predetermined distance, thereby reducing security. [Solution] The device includes a housing assembly, an electric motor capable of rotating the output shaft of the electric motor in a first direction in response to a positive electromotive force input and rotating the output shaft in a second direction opposite to the first direction in response to a negative electromotive force input, and a semi-interlocking gear assembly capable of transmitting the power output from the output shaft to the lock lever of the electronic lock, thereby converting the electronic lock between a locked state and an unlocked state, wherein the semi-interlocking gear assembly is configured to convert the lock lever from an extended state to a retracted state by transmitting power through the semi-interlocking gear assembly after the output shaft has passed one idle stroke.

Description

Technical Field

[0005]

[0001] This application relates to an electronic lock, and particularly to an electronic lock including a semi - interlocking gear assembly.

Background Art

[0002] In a conventional electronic lock, after the lock lever of the electronic lock moves to the locking position, the power supply to the electric motor is cut off. At the moment when the power supply is cut off, an instantaneous back electromotive force occurs in the electric motor. Therefore, by reversing this electric motor to retract the lock lever by a predetermined distance, the safety of the electronic lock is reduced.

Summary of the Invention

[0003] In order to overcome at least one of the above - mentioned and other problems and defects in the prior art, this application has been proposed. [[ID=2...]]This application includes a housing assembly, an electric motor housed in the housing assembly that can rotate the output shaft of the electric motor in a first direction in response to the input of a positive electromotive force and can rotate the output shaft in a second direction opposite to the first direction in response to the input of a negative electromotive force, and a semi - interlocking gear assembly housed in the housing assembly that can transmit the power output from the output shaft to the lock lever of the electronic lock and convert the electronic lock between a locked state and an unlocked state by causing the lock lever to protrude and retract. The semi - interlocking gear assembly is configured to convert the lock lever from a protruding state to a retracted state by transmitting power through the semi - interlocking gear assembly after the output shaft has passed through one idle stroke, providing an electronic lock.

[0004]

[0005] In some embodiments, the semi-linked gear assembly includes a rack connected to a lock lever and converting the lock lever between the protruding state and the retracted state; a first semi-linked gear that meshes with the rack to convert rotational motion into linear reciprocating motion of the rack; and a second semi-linked gear that is semi-linked with the first semi-linked gear and can rotate coaxially with the first semi-linked gear, wherein one of the first semi-linked gear and the second semi-linked gear includes a first stopper portion protruding from the end face of its body, the first stopper portion being eccentric with respect to the center of the semi-linked gear, and the other of the first semi-linked gear and the second semi-linked gear includes a recessed groove extending from the end face of its body, the groove forming an arc centered on the center of the semi-linked gear and including a second stopper portion, and the first stopper portion being able to move within the groove.

[0006] In some embodiments, when the first stopper portion contacts the second stopper portion, the first semi-linked gear and the second semi-linked gear rotate coaxially, transmitting power from the output shaft to the lock lever via the semi-linked gear assembly. When the first stopper portion does not contact the second stopper portion and moves within the groove, the rotation of the second semi-linked gear cannot be transmitted to the first semi-linked gear. Therefore, power from the output shaft cannot be transmitted via the semi-linked gear assembly, and the output shaft is in an idle stroke.

[0007] In some embodiments, one of the first and second semi-linked gears further includes a cylindrical recess located at its center, and the other of the first and second semi-linked gears further includes a cylindrical projection shaft located at its center, the cylindrical projection shaft protruding from the end face of the second semi-linked gear and being insertable into the cylindrical recess, so that the first and second semi-linked gears are coaxially arranged. In some embodiments, the first semi-interlocking gear includes the first stopper portion and the cylindrical recess, wherein the first stopper portion has an arc shape surrounding the edge of the cylindrical recess, and the second semi-interlocking gear includes the groove and the cylindrical projection shaft, wherein the groove has an arc shape surrounding the cylindrical projection shaft, and the length of the arc of the first stopper portion is smaller than the length of the arc of the groove.

[0008] In some embodiments, the second stopper portion is fan-shaped and is connected to the cylindrical projection shaft across the groove. In some embodiments, the cylindrical recess is shaped like a blind hole to accommodate a lubricant. In some embodiments, the semi-interlocking gear assembly further includes an axle gear, the axle gear including a shaft that crosses the rack and a first gear portion and a second gear portion located at both ends of the shaft, the first gear portion meshing with the second semi-interlocking gear, and the rotation axis of the axle gear being perpendicular to the direction of linear reciprocating motion of the rack.

[0009] In some embodiments, the semi-interlocking gear assembly further includes a screw gear that rotates coaxially with the output shaft of the electric motor, a helical gear that can mesh with the screw gear, and a spur gear that rotates coaxially with the helical gear and can mesh with the second gear portion of the shaft gear.

[0010] In some embodiments, the helical gear and the spur gear are integrated, and the common axis of rotation of the helical gear and the spur gear is perpendicular to the axis of rotation of the screw gear and parallel to the axis of rotation of the shaft gear.

[0011] In some embodiments, the first semi-interlocking gear, the second semi-interlocking gear, the first gear section, and the second gear section are each of the spur gear type.

[0012] In some embodiments, the first semi-interlocking gear, the second semi-interlocking gear, the first gear section, the second gear section, the spur gear, the helical gear, and the screw gear are fixed in position relative to the housing assembly, while the rack and the lock lever can reciprocate relative to the housing assembly.

[0013] In some embodiments, the housing assembly includes a first housing and a second housing, and the locking lever can move through the first housing. In some embodiments, the system further includes a power line for supplying the electric motor with the positive or negative electromotive force, and a switch connected to the power line and the electric motor, which is configured to switch between the positive and negative electromotive forces and to interrupt the power supply to the electric motor.

[0014] The various different embodiments of the present invention include a semi-interlocking gear assembly, which allows power to be transmitted to the lock lever via the semi-interlocking gear assembly only after the output shaft of the electric motor has completed an idle stroke, and further allows the lock lever to be converted from an extended state to a retracted state. With this method, when the power supply is cut off, a momentary back electromotive force is generated in the electric motor, causing the output shaft of the electric motor to reverse, but the lock lever does not retract due to the presence of the idle stroke. The lock lever can only be retracted and the lock released when a back electromotive force is continuously input to the electric motor, thereby improving the security of the electronic lock.

[0015] The following explanation of this application, with reference to the drawings, will clarify its other objectives and merits, and allow for a full understanding of the application. [Brief explanation of the drawing]

[0016] To more clearly explain the technical concept of the embodiments of this application, the drawings of the embodiments will be briefly described below. However, it should be understood that the drawings described below relate only to some embodiments of this application and are not intended to limit this application. [Figure 1] This is a perspective view of the electronic lock relating to the present invention. [Figure 2] This is a perspective view of the electronic lock shown in Figure 1 after the first housing has been removed. [Figure 3] This is a perspective view of the electronic lock with the first and second housings removed, viewed from a different angle than in Figure 2. [Figure 4] Figure 3 is a plan view of the electronic lock in the locked state. [Figure 5] Figure 3 is a plan view of the electronic lock in the unlocked state. [Figure 6] This is a perspective view of the assembled first and second semi-interlocking gears of the electronic lock according to the present invention. [Figure 7] This is a perspective view of the first and second semi-interlocking gears of the electronic lock according to the present invention, which are separated from each other. [Figure 8] This is a front view of the first and second semi-interlocking gears of the electronic lock according to the present invention. [Modes for carrying out the invention]

[0017] Embodiments of the present application will be described below with reference to the drawings. The same drawing markings and reference numerals shown in the drawings of the present application refer to elements or components that perform substantially the same function. Furthermore, the terms used herein are for the purpose of describing embodiments and are not intended to limit and / or restrict this application. Unless otherwise specifically indicated in the context, the singular forms “one,” “one kind,” and “the said,” and “the said,” also include the plural forms. In this application, “including,” “containing,” “having,” and similar terms are used to enumerate features, quantities, steps, operations, elements, components, or combinations thereof, but do not exclude the presence or addition of one or more of the said features, quantities, steps, operations, elements, components, or combinations thereof.

[0018] In this specification, various different elements can be described using terms such as "first", "second", "third", etc., but these elements should not be limited to these terms. These terms are only used to distinguish one element from another. For example, without departing from the scope of the present application, the first element may be referred to as the second element, and the second element may also be referred to as the first element. The term "and / or" includes a combination of a plurality of related items or any one of the plurality of related items.

[0019] In the following detailed description, for the sake of convenience of explanation, in order to comprehensively understand the embodiments of the present application, many specific details have been described. However, obviously, one or more embodiments can also be implemented without these specific details. In other cases, known structures and devices are schematically shown in order to simplify the drawings.

[0020] Embodiments of the present application provide an electronic lock including a housing assembly, an electric motor, and a semi-coupled gear assembly. The electric motor is housed within the housing assembly and can rotate the output shaft of the electric motor in a first direction in response to an input of positive electromotive force, and can also rotate the output shaft in a second direction opposite to the first direction in response to an input of negative electromotive force. The semi-coupled gear assembly is housed within the housing assembly and can transmit the power output from the output shaft to the lock lever of the electronic lock to cause the lock lever to protrude and retract, thereby converting the electronic lock between a locked state and an unlocked state. The semi-coupled gear assembly is configured to convert the lock lever from a protruding state to a retracted state by transmitting power through the semi-coupled gear assembly after the output shaft has passed through one idle stroke.

[0021] As shown in FIG. 1, the electronic lock according to the present application includes a housing assembly for accommodating various components thereof. The housing assembly includes a first housing 11 and a second housing 12. The lock lever 14 of the electronic lock can be converted between a protruding state and a retracted state by moving through the first housing 11. In some embodiments, when the electronic lock is in the locked state, the lock lever 14 in the retracted state is completely retracted into the housing assembly. In some other embodiments, when the electronic lock is in the locked state, the lock lever 14 in the retracted state is not completely retracted into the housing assembly. That is, the lock lever 14 in the retracted state still has a portion located outside the housing assembly, but the length of the portion of the lock lever 14 in the retracted state located outside the housing assembly is smaller than the length of the portion of the lock lever 14 in the protruding state located outside the housing assembly.

[0022] The electronic lock according to the present application includes an electric motor 13 that converts electric power into mechanical power. The electric motor 13 can rotate the output shaft 131 thereof in a first direction in response to the input of a positive electromotive force, and can rotate 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 are, respectively, the clockwise direction and the counterclockwise direction. That is, the electric motor 13 can rotate in the first direction or the second direction opposite to each other based on the input of a positive electromotive force or a negative electromotive force. When a positive electromotive force is continuously input to the electric motor 13, the output shaft 131 continuously rotates in the first direction. When a negative electromotive force is continuously input to the electric motor 13, the output shaft 1 continuously rotates in the second direction. >

[0023] As shown in Figure 2, the electronic lock according to the present invention may include a power line 15 and a switch 16. The power line 15 can continuously supply power to the electric motor 13, for example, by providing a positive or negative electromotive force. The switch 16 is connectable to the power line 15 and the electric motor 13, and is configured to switch between a positive and a negative electromotive force to change the rotation direction of the output shaft 131. The switch 16 can position the lock lever 14 in an extended or retracted state by cutting off the power supply to the electric motor 13. The rotational power output from the output shaft 131 passes through the semi-interlocking gear assembly and then reaches the lock lever 14, thereby converting the lock lever between an extended state and a retracted state, and further converting the electronic lock between a locked state and an unlocked state.

[0024] The semi-interlocking gear assembly is housed within the housing assembly and is connected to the output shaft 131 and the lock lever 14, thereby transmitting power output from the electric motor 13. According to each embodiment of the present application, the semi-interlocking gear assembly is configured to convert the lock lever 14 from an extended state to a retracted state by transmitting power through the semi-interlocking gear assembly after the output shaft 131 has completed one idle stroke. The semi-interlocking gear assembly may also be configured to convert the lock lever 14 from a retracted state to an extended state by transmitting power through the semi-interlocking gear assembly after the output shaft 131 has completed another idle stroke. In the embodiment, the rotational direction of the idle stroke that occurs when the lock lever 14 is converted from an extended state to a retracted state is opposite to the rotational direction of the other idle stroke that occurs when the lock lever 14 is converted from a retracted state to an extended state.

[0025] In this specification, the term "idle stroke" means that the output shaft 131 of the electric motor 13 can rotate but cannot move the lock lever 14, i.e., the output shaft 131 is in an idle state. Specifically, before the semi-linked gear assembly can transmit power from the electric motor 13 to the lock lever 14 through itself, one of the semi-linked gears, the first semi-linked gear 22 and the second semi-linked gear 23, rotates but cannot rotate the other semi-linked gear. Therefore, even if the output shaft 131 of the electric motor 13 rotates, it is not possible to transmit the rotational power to the lock lever 14 through the semi-linked gear assembly (particularly through the first semi-linked gear 22 and the second semi-linked gear 2) to cause the lock lever to protrude or retract. After the idle stroke has elapsed, the rotational power of the output shaft 131 can be transmitted to the lock lever 14 through the semi-linked gear assembly to cause the lock lever to protrude or retract. Due to the presence of an idle stroke provided by the semi-interlocking gear assembly, the lock lever 14 can be converted between an extended and retracted state in a delayed response to changes in the rotational direction of the output shaft 131. In other words, when the electric motor 13 changes the rotational direction of the output shaft 131 due to a change in electromotive force, the lock lever 14 does not immediately convert from the extended state to the retracted state or from the retracted state to the extended state in response to the change in the rotational direction of the output shaft 131. Furthermore, when the output shaft 131 rotates from a stationary state in response to the input of electromotive force, the lock lever 14 does not move immediately, i.e., it extends or retracts with a delay. That is, the semi-interlocking gear assembly temporarily interrupts the transmission of power, preventing power from being transmitted to the lock lever 14 via the semi-interlocking gear assembly, thereby keeping the lock lever in a stationary state.

[0026] In conventional technology, when the power supply is interrupted, an instantaneous back electromotive force is generated in the electric motor, causing the output shaft to reverse. As a result, the lock lever immediately changes from an extended state to a retracted state, causing the lock lever to retract by a predetermined distance, thereby reducing the security of the electronic lock.

[0027] In contrast, in the present invention, when the power supply is interrupted, an instantaneous back electromotive force is generated in the electric motor 13, causing the output shaft 131 to reverse. However, due to the presence of an idle stroke, the power cannot be transmitted to the lock lever 14 via the semi-interlocking gear assembly, and the lock lever does not retract. Only when a back electromotive force is continuously input to the electric motor 13 can the lock lever 14 be fully retracted, thereby unlocking the electronic lock and improving the security of the electronic lock.

[0028] According to embodiments of the present invention, the semi-linked gear assembly may include a rack 21, a first semi-linked gear 22, and a second semi-linked gear 23. In some cases, the electric motor may directly drive the second semi-linked gear 23 to convert the lock lever 14 between an extended state and a retracted state. In some other cases, the electric motor may indirectly drive the second semi-linked gear 23, that is, there may be further transmission devices, such as gears, between the electric motor and the second semi-linked gear 23.

[0029] The rack 21 is connected to the lock lever 14 and may convert the lock lever between an extended state and a retracted state. The rack 21 may also reciprocate linearly to cause the lock lever 14 to reciprocate linearly, thereby converting the lock lever 14 between an extended state and a retracted state. As preferably shown in Figures 2 to 5, 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 lock lever 14. In the illustrated embodiment, the lock lever 14 is detachably connected to the rack 21. In other embodiments, the lock lever 14 may be permanently connected to the rack 21.

[0030] The first semi-linked gear 22 may mesh with the rack 21, and in particular with the teeth on the main body of the rack 21, thereby converting the rotational motion of the first semi-linked gear 22 into the linear reciprocating motion of the rack 21. The second semi-linked gear 23 is arranged in parallel with the first semi-linked gear 22 and is in a semi-linked state, and can rotate coaxially with the first semi-linked gear 22.

[0031] In some embodiments, one of the first semi-linked gear 22 and the second semi-linked gear 23 may include a first stopper portion 221 protruding from the end face of its body. In the illustrated embodiment, the first semi-linked gear 22 may include the first stopper portion 221. In other embodiments, the second semi-linked gear 23 may include the first stopper portion. As preferably shown in Figures 7 and 8, the first stopper portion 221 is positioned eccentrically with respect to the center of the semi-linked gear. That is, the first stopper portion 221 is not located at the center of the semi-linked gear and can rotate about the center.

[0032] The other of the first semi-linked gear 22 and the second semi-linked gear 23 may include a recessed groove 230 extending from the end face of its body. In the illustrated embodiment, the second semi-linked gear 23 may include the groove 230. In other embodiments, the first semi-linked gear 22 may include the groove. As preferably shown in Figures 7 and 8, the groove 230 has the shape of an arc centered on the center of the second semi-linked gear and includes a second stopper portion 231. In the illustrated embodiment, the second stopper portion 231 is formed at the end of the arc-shaped groove 230. In other embodiments, the groove 230 may have the shape of an annular ring surrounding the center of rotation, and the second stopper portion 231 may be a projection located within the groove 230.

[0033] In the illustrated embodiment, the first stopper portion 221 can move within the groove 230. In other words, when the first semi-linked gear 22 and the second semi-linked gear 23 rotate relative to each other, the first stopper portion 221 of the first semi-linked gear 22 can move within the groove 230 of the second semi-linked gear 23. In this case, the first stopper portion 221 does not come into contact with the second stopper portion 231, and the rotation of the second semi-linked gear 23 cannot be transmitted to the first semi-linked gear 22. Therefore, the power of the output shaft 131 cannot be transmitted through the semi-linked gear assembly, and the output shaft 131 is in idle stroke.

[0034] When the first stopper portion 221 comes into contact with the second stopper portion 231, the second stopper portion 231 can move the first stopper portion 221, causing the first semi-interlocking gear 22 and the second semi-interlocking gear 23 to rotate coaxially, thereby transmitting the power from the output shaft 131 of the electric motor to the lock lever 14 via the semi-interlocking gear assembly.

[0035] One of the first semi-linked gear 22 and the second semi-linked gear 23 may include a cylindrical recess 222 located in its center. In the illustrated embodiment, the first semi-linked gear 22 may include the 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 semi-linked gear 22 opposite to the cylindrical recess 222 may include a projection that is attached to the housing assembly to fix the position of the first semi-linked gear 22 relative to the housing assembly. In other embodiments, the cylindrical recess 222 may be in the form of a through hole, and a cylindrical projection shaft 232, described later, may be attached to the housing assembly by passing through the through hole to fix the position of the first semi-linked gear 22 and the second semi-linked gear 23 relative to the housing assembly.

[0036] The other of the first semi-linked gear 22 and the second semi-linked gear 23 may include a cylindrical projection shaft 232 located at its center. In the illustrated embodiment, the second semi-linked gear 23 includes the cylindrical projection shaft 232. The cylindrical projection shaft 232 may project from the end face of the second semi-linked gear 23 and be inserted into a cylindrical recess 222 in the first semi-linked gear 22 so that the first semi-linked gear 22 and the second semi-linked gear 23 are coaxially positioned. The end of the second semi-linked gear 23 opposite to the cylindrical projection shaft 232 may include a projection that is attached to the housing assembly to fix the position of the second semi-linked gear 23 relative to the housing assembly.

[0037] As preferably shown in Figures 7 and 8, the first semi-interlocking gear 22 may include a first stopper portion 221 and a cylindrical recess 222, and the first stopper portion 221 has an arc shape surrounding the edge of the cylindrical recess 222. The second semi-interlocking gear 23 may include a groove 230 and a cylindrical projection shaft 232, and the groove 230 has an arc shape surrounding the cylindrical projection shaft 232. As preferably shown in Figure 8, the length of the arc of the first stopper portion 221 is smaller than the length of the arc of the groove 230, so that the first stopper portion 221 can move within the groove 230.

[0038] As preferably shown in Figures 7 and 8, the second stopper portion 231 has a fan shape and is connected to the cylindrical protruding shaft 232 across the groove 230, thereby improving the robustness of the second semi-interlocking gear 23.

[0039] In some embodiments of the present application, the semi-linked gear assembly may further include a shaft gear. As preferably shown in Figures 2 to 5, the shaft gear may include a shaft 29 that crosses the rack 21 and a first gear portion 24 and a second gear portion 25 located at both ends of the shaft 29. As shown, the first gear portion 24 may mesh with the second semi-linked gear 23 to rotate the second semi-linked gear 23. The axis of rotation of the shaft gear may be perpendicular to the direction of linear reciprocating motion of the rack 21.

[0040] In some cases, the electric motor may directly drive the second gear section 25 to convert the lock lever 14 between the extended and retracted states.

[0041] In other cases, the electric motor may indirectly drive the second gear section 25, meaning that there may be other transmission devices, such as gears, between the electric motor and the second gear section 25. As preferably shown in Figures 2 to 5, the semi-interlocking gear assembly may further include a screw gear 28 that rotates coaxially connected to the output shaft 131 of the electric motor 13, a helical gear 27 that can mesh with the screw gear 28, and a spur gear 26 that rotates coaxially connected to the helical gear 27 and can mesh with the second gear section 25 of the shaft gear. In some embodiments, the helical gear 27 and the spur gear 28 may be integrated. In some other embodiments, the helical gear 27 and the spur gear 28 may be separate and may be assembled in a manner that allows them to rotate together, for example, by coupling them together.

[0042] In the illustrated embodiment, when the first stopper portion 221 of the first semi-linked gear 22 contacts the second stopper portion 231 of the second semi-linked gear 23, the power from the output shaft 131 of the electric motor 13 is first transmitted to the screw gear 28, and then to the helical gear 27, spur gear 26, second gear portion 25, first gear portion 24, second semi-linked gear 23, first semi-linked gear 22 and rack 21 in that order, and further transmitted to the lock lever 14, causing the lock lever 14 to protrude or retract.

[0043] As preferably shown in Figures 2 to 5, the common axis of rotation of the helical gear 27 and the spur gear 28 is perpendicular to the axis of rotation of the screw gear 28 and parallel to the axis of rotation of the shaft gear. With this arrangement, the semi-interlocking gear assembly can be made more compact, and the volume of the electronic lock can be reduced.

[0044] In the illustrated embodiment, the first semi-linked gear 22, the second semi-linked gear 23, the first gear section 24, and the second gear section 25 are all spur gears. The transmission ratio between the rack 21, the first semi-linked gear 22, the second semi-linked gear 23, the first gear section 24, the second gear section 25, the spur gear 26, the helical gear 27, and the screw gear 28 may be selected depending on the situation, and this application does not limit this.

[0045] Furthermore, the first semi-linked gear 22, the second semi-linked gear 23, the first gear section 24, the second gear section 25, the spur gear 26, the helical gear 27, and the screw gear 28 are fixed in position relative to the housing assembly, while the rack 21 and the lock lever 14 can reciprocate relative to the housing assembly. As preferably shown in Figures 4 and 5, the position of the rack 21 and the lock lever 14 is changeable relative to the electric motor 13 fixed to the housing assembly.

[0046] As mentioned above, the electronic lock includes a semi-interlocking gear assembly, which allows power to be transmitted to the lock lever via the semi-interlocking gear assembly only after the output shaft of the electric motor has completed an idle stroke, and furthermore, the lock lever can be converted from the extended state to the retracted state. With this system, when the power supply is cut off, a momentary back electromotive force is generated in the electric motor, causing the output shaft of the electric motor to reverse, but the lock lever does not retract due to the presence of the idle stroke. The lock lever can only be retracted and the lock released if a back electromotive force is continuously input to the electric motor, thus improving the security of the electronic lock.

[0047] As those skilled in the art will understand, the embodiments described above are all illustrative, and those skilled in the art can improve them and modify or freely combine the structures described in each embodiment, provided that no structural or fundamental contradictions arise.

[0048] The above embodiments are merely illustrative examples illustrating the principles and structure of the present application and do not limit it. A person skilled in the art should understand that any modifications and improvements made to the present application, as long as they do not deviate from the overall concept of the present application, fall within the scope of the present application. The scope of protection of the present application should be limited to the scope defined by the claims of the present application.

Claims

1. Housing assembly and An electric motor (13) is housed within the housing assembly and is capable of rotating the output shaft (131) of the electric motor in a first direction in response to a positive electromotive force input, and rotating the output shaft (131) in a second direction opposite to the first direction in response to a negative electromotive force input, The housing assembly includes a semi-interlocking gear assembly that is housed within the housing assembly and transmits power output from the output shaft (131) to the lock lever (14) of the electronic lock, thereby causing the lock lever to extend and retract, thereby converting the electronic lock between a locked state and an unlocked state. The semi-interlocking gear assembly is configured to convert the lock lever (14) from an extended state to a retracted state by transmitting power through the semi-interlocking gear assembly after the output shaft (131) has completed one idle stroke. An electronic lock characterized by the following features.

2. The semi-linked gear assembly is configured to transmit power through the semi-linked gear assembly after the output shaft (131) has passed another idle stroke, thereby converting the lock lever (14) from the retracted state to the extended state. The electronic lock according to feature 1.

3. The aforementioned semi-interlocking gear assembly is A rack (21) connected to the lock lever (14) and capable of converting the lock lever between the protruding state and the retracted state, A first semi-interlocking gear (22) that meshes with the rack (21) to convert rotational motion into linear reciprocating motion of the rack, It includes a second semi-interlocking gear (23) that is in a semi-interlocking state with the first semi-interlocking gear (22) and can rotate coaxially with the first semi-interlocking gear, One of the first semi-interlocking gear (22) and the second semi-interlocking gear (23) includes a first stopper portion (221) protruding from the end face of its body, and the first stopper portion is arranged eccentrically with respect to the center of the semi-interlocking gear. The other of the first semi-interlocking gear (22) and the second semi-interlocking gear (23) includes a recessed groove (230) extending from the end face of its body, the groove forming an arc centered on the center of the semi-interlocking gear and including a second stopper portion (231), The first stopper portion (221) can move within the groove (230). The electronic lock according to feature 2.

4. When the first stopper portion (221) comes into contact with the second stopper portion (231), the first semi-interlocking gear (22) and the second semi-interlocking gear (23) rotate coaxially, thereby transmitting the power of the output shaft (131) to the lock lever (14) via the semi-interlocking gear assembly. When the first stopper portion (221) does not come into contact with the second stopper portion (231) and moves within the groove (230), the rotation of the second semi-linked gear (23) cannot be transmitted to the first semi-linked gear (22). Therefore, the power of the output shaft (131) cannot be transmitted through the semi-linked gear assembly, and the output shaft (131) remains in idle stroke. The electronic lock according to feature 3.

5. One of the first semi-interlocking gear (22) and the second semi-interlocking gear (23) further includes a cylindrical recess (222) located in its center, The other of the first semi-interlocking gear (22) and the second semi-interlocking gear (23) further includes a cylindrical projection shaft (232) located at its center, the cylindrical projection shaft (232) protruding from the end face of the second semi-interlocking gear (23) and being insertable into the cylindrical recess (222), so that the first semi-interlocking gear (22) and the second semi-interlocking gear (23) are arranged coaxially. The electronic lock according to feature 4.

6. The first semi-interlocking gear (22) includes the first stopper portion (221) and the cylindrical recess (222), and the first stopper portion (221) has an arc shape that surrounds the edge of the cylindrical recess (222). The second semi-interlocking gear (23) includes the groove (230) and the cylindrical projection shaft (232), and the groove (230) has an arc shape surrounding the cylindrical projection shaft (232), The arc length of the first stopper portion (221) is smaller than the arc length of the groove (230). The electronic lock according to feature 5.

7. The second stopper portion (231) is fan-shaped and is connected to the cylindrical projection shaft (232) across the groove (230). The electronic lock according to feature 6.

8. The cylindrical recess (222) is shaped like a blind hole to accommodate the lubricant. The electronic lock according to feature 5.

9. The aforementioned semi-interlocking gear assembly further includes a shaft gear, The shaft gear includes a shaft rod (29) that crosses the rack (21) and a first gear portion (24) and a second gear portion (25) located at both ends of the shaft rod (29), the first gear portion (24) meshing with the second semi-interlocking gear (23), The axis of rotation of the aforementioned shaft gear is perpendicular to the direction of linear reciprocating motion of the rack (21). The electronic lock according to any one of claims 3 to 8.

10. The aforementioned semi-interlocking gear assembly is A screw gear (28) is coaxially connected to the output shaft (131) of the electric motor (13) and rotates therein, A helical gear (27) that can mesh with the screw gear (28), The above further includes a spur gear (26) that is coaxially connected to the helical gear (27) and rotates, and that can mesh with the second gear portion (25) of the shaft gear. The electronic lock according to feature 9.

11. The helical gear (27) and the spur gear (28) are integrated, and the common axis of rotation of the helical gear (27) and the spur gear (28) is perpendicular to the axis of rotation of the screw gear (28) and parallel to the axis of rotation of the shaft gear. The electronic lock according to feature 10.

12. The first semi-interlocking gear (22), the second semi-interlocking gear (23), the first gear section (24), and the second gear section (25) are all of the spur gear type. The electronic lock according to feature 11.

13. The first semi-interlocking gear (22), the second semi-interlocking gear (23), the first gear section (24), the second gear section (25), the spur gear (26), the helical gear (27), and the screw gear (28) are fixed in position with respect to the housing assembly (11, 12). The rack (21) and the lock lever (14) can reciprocate relative to the housing assembly (11, 12). The electronic lock according to feature 12.

14. The housing assembly (11, 12) includes a first housing (11) and a second housing (12), The lock lever (14) can move through the first housing (11). The electronic lock according to any one of claims 1 to 8 and 10 to 13.

15. A power line (15) for supplying the positive electromotive force or the negative electromotive force to the electric motor (13), The system further includes a switch (16) connected to the power line (15) and the electric motor (13), and configured to switch between the positive electromotive force and the negative electromotive force and to interrupt the power supply to the electric motor (13). The electronic lock according to any one of claims 1 to 8 and 10 to 13.

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