CN111622614A

CN111622614A - Lock driving mechanism and electronic lock

Info

Publication number: CN111622614A
Application number: CN202010520942.8A
Authority: CN
Inventors: 黄志刚; 陈杨; 韦方俊; 柴多意; 江继生; 郭迪
Original assignee: Ningbo Rayonics Technology Co ltd; Beijing Huada Zhibao Electronic System Co Ltd
Current assignee: Ningbo Rayonics Technology Co ltd; Beijing Huada Zhibao Electronic System Co Ltd
Priority date: 2020-06-10
Filing date: 2020-06-10
Publication date: 2020-09-04

Abstract

The invention discloses a lock driving mechanism and an electronic lock, which comprise a control circuit, a motor, a lock beam and a lock tongue for locking the lock beam, wherein the control circuit controls the motor to rotate; the control circuit comprises a first sensor, and the eccentric wheel is provided with at least one trigger element which can trigger the motor to stop rotating; after the motor drives the lock tongue to a preset position for locking or releasing the lock beam, the first sensor detects a signal of the trigger element and sends a signal to the control circuit to stop the motor from rotating, so that the large-current loss caused by the locked rotation of the motor at the limited position is avoided, and the standby time of the lock is prolonged.

Description

Lock driving mechanism and electronic lock

Technical Field

The invention relates to an electronic lock or an intelligent lock, in particular to a driving mechanism of the electronic lock.

Background

An intelligent lock or an electronic lock is different from a traditional mechanical lock, is a lock which is more intelligent in the aspects of user identification, safety and manageability, and is an execution component of an access control system, equipment safety, anti-theft measures and the like.

The micro electronic lock with the authorization notice number of CN101435290B comprises a lock body and a U-shaped lock beam, wherein an electronic driving mechanism comprises a motor connected with a driving signal output end of a control circuit, and the motor drives a lock plug mechanism to be in two position states of separating unlocking or embedding matching locking at the U-shaped lock beam.

The lock driving mechanism with the authorization notice number of CN104196364B for the electronic seal lock is characterized in that a lock beam jack is arranged in a lock shell, a speed reducing motor and a guide seat are fixed in the lock shell, a lead screw nut transmission mechanism is arranged in the guide seat, and the speed reducing motor is used for driving a lead screw and a lock tongue in the lock driving mechanism, so that the lock is opened and closed.

Application publication is CN 110185332A's intelligent tool to lock, microcontroller control motor are rotatory, and the spring bolt breaks away from the second draw-in groove, and first spring is outwards decided the locking lever and is unblanked.

The intelligent electronic lock disclosed by the existing document has a complex structure and relatively insufficient reliability; and the large current loss caused by the locked rotor of the motor exists, and the standby time of the lockset is reduced.

Disclosure of Invention

The invention aims to provide a driving mechanism of a novel electronic lock, and further provides an electronic lock with the driving mechanism, wherein the lock has a function of preventing a motor from being locked.

The technical scheme adopted by the invention for solving the technical problems is as follows: the lock driving mechanism comprises a control circuit, a motor, a lock beam and a lock tongue for locking the lock beam, wherein the control circuit controls the motor to rotate, an output shaft of the motor is connected with an eccentric wheel, one end of the lock tongue is connected to the eccentric wheel, and the motor transversely drives the lock tongue to lock or release the lock beam through the eccentric wheel so as to realize locking and unlocking; the control circuit comprises a first sensor, and the eccentric wheel is provided with at least one trigger element which can trigger the motor to stop rotating; after the motor drives the bolt to a preset position for locking or releasing the lock beam, the first sensor detects a signal of the trigger element and sends a signal to the control circuit to enable the motor to stop rotating.

The technical scheme adopted by the invention for further optimizing the technical problem is as follows: the eccentric wheel is provided with a first trigger element and a second trigger element; in the locking state of the lock beam, the first trigger element triggers the first sensor to stop the motor from rotating; in a lock beam releasing state, the second trigger element triggers the first sensor to stop the motor from rotating.

The technical scheme adopted by the invention for further optimizing the technical problem is as follows: the control circuit comprises a second sensor, and a third trigger element capable of triggering locking information is arranged on the lock beam; after the lock beam is pressed down, the third trigger element on the lock beam triggers the second sensor to enable the motor to rotate for a certain angle, and the motor drives the eccentric wheel to enable the lock tongue to slide into the lock groove of the lock beam, so that locking action is achieved.

The technical scheme adopted by the invention for further optimizing the technical problem is as follows: the control circuit receives an external unlocking signal to enable the motor to rotate for a certain angle, and the motor drives the eccentric wheel to enable the lock tongue to move out of the lock groove in the lock beam, so that unlocking action is achieved.

The technical scheme adopted by the invention for further optimizing the technical problem is as follows: in the unlocking or locking action, the rotation angle of the driving motor is 180 degrees, and the rotation direction of the unlocking motor and the rotation direction of the locking motor are the same direction.

The technical scheme adopted by the invention for further optimizing the technical problem is as follows: the first trigger element and the second trigger element are positioned on the lower surface of the eccentric wheel and positioned on two sides of the axis of the eccentric wheel.

The technical scheme adopted by the invention for further optimizing the technical problem is as follows: the first sensor and the second sensor are Hall sensors, and the first trigger element, the second trigger element and the third trigger element are magnetic elements.

The technical scheme adopted by the invention for further optimizing the technical problem is as follows: one end of the lock tongue is provided with a clamping groove with a downward opening, the eccentric wheel is provided with an eccentric column, and the eccentric column is adaptive to the clamping groove so that the lock tongue is connected to the eccentric wheel.

The technical scheme adopted by the invention for further optimizing the technical problem is as follows: the lock shell is internally provided with an installation frame for installing a control circuit and a motor, and modular assembly parts are formed.

Another protection topic of the present invention is: an electronic lockset comprises the lockset driving mechanism.

Compared with the prior art, the invention has the advantages that the eccentric wheel is driven by the motor, the locking and the releasing of the lock bolt to the lock beam are realized, the first sensor is arranged on the control circuit, the trigger element is arranged on the eccentric wheel, the first sensor detects the signal of the trigger element and sends a signal to the control circuit to stop the motor after the motor drives the lock bolt to a preset position for locking or releasing the lock beam, the rotating and positioning action of the eccentric wheel is realized to enable the lock bolt to reach the preset position, the large current loss caused by the rotation blockage of the motor on a limited position is avoided, and the standby time of the lock is prolonged.

Drawings

The present invention will be described in further detail below with reference to the drawings and preferred embodiments, but those skilled in the art will appreciate that the drawings are only drawn for the purpose of illustrating the preferred embodiments and therefore should not be taken as limiting the scope of the invention. Furthermore, unless specifically stated otherwise, the drawings are merely schematic representations based on conceptual representations of elements or structures depicted and may contain exaggerated displays and are not necessarily drawn to scale.

FIG. 1 is a schematic diagram of a preferred embodiment of the present invention;

FIG. 2 is an exploded view of a preferred embodiment of the present invention;

FIG. 3 is an exploded view of a preferred embodiment of the present invention;

FIG. 4 is a schematic illustration of an unlocked state of a preferred embodiment of the present invention;

FIG. 5 is a cross-sectional view of a preferred embodiment of the present invention in an unlocked state;

FIG. 6 is a schematic illustration of the latched condition of a preferred embodiment of the present invention;

FIG. 7 is a cross-sectional view of the latched condition of a preferred embodiment of the present invention;

FIG. 8 is an enlarged partial schematic view of FIG. 3 in accordance with a preferred embodiment of the present invention;

fig. 9 is a schematic view of a locking bolt of a preferred embodiment of the present invention.

Detailed Description

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Those skilled in the art will appreciate that the description is illustrative only, and is not to be construed as limiting the scope of the invention. It should be noted that: like reference numerals refer to like items in the following figures, and thus, once an item is defined in one figure, it may not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships conventionally arranged when products of the present invention are used, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have specific orientations, be constructed in specific orientations, and operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1-3, the electronic lock includes a housing 100, a driving mechanism 200 inside the housing 100 for facilitating the unlocking and locking of the lock, and an external circuit 300.

The lock case 100 includes an inner cavity for accommodating the driving mechanism 200, and the top surface of the lock case 100 is provided with first and

second locking holes

01 and 02 identical to the inner cavity of the lock case 100. The lock driving mechanism 200 includes a control circuit 1, a motor 2, an eccentric wheel 3, a lock beam 4, and a latch 5 for locking the lock beam 4.

Wherein, the lock beam 4 is in a U-shaped structure and is disposed at one side of the lock case 100. Specifically, the fixed end of the lock beam 4 extends into the lock case 100 through the second lock hole 02 at least partially, and the fixed end and the lock case 100 can slide up and down to some extent. The free end of the lock beam 4 can fall into or move out of the first lock hole 01 matched with the fixed end along with the sliding of the fixed end. When the free end of the arc 4 is adapted to fall into the first hole 01, a locking ring is formed between the arc 4 and the lock housing 100, thereby locking the object.

Further, a locking tongue 5 is transversely disposed in the lock case 100. And the fixed end of the arc 4 is provided with a lock slot 41, and the bolt 5 is transversely inserted into the lock slot 41, so that the arc 4 is locked and cannot move relative to the lock case 100. And when the bolt 5 exits the lock slot 41, the lock beam 4 can move.

3-8 in the embodiment, the bolt 5 is driven by the eccentric wheel 3, the eccentric wheel 3 is mounted on the output shaft 21 of the motor 2 and can rotate along with the motor 2, and the eccentric wheel 3 is provided with an eccentric column 31 on the upper surface, and the eccentric column 31 changes the position in the transverse direction along with the rotation of the eccentric wheel 3.

Meanwhile, referring to fig. 9, one end of the locking tongue 5 away from the lock beam 4 is provided with a clamping groove 51 with a downward opening, and the eccentric column 31 is adapted to the clamping groove 51, so that the locking tongue 5 is connected to the eccentric wheel 3. When the eccentric wheel 3 is driven by the motor 2 to rotate, the bolt 5 moves along with the eccentric wheel, so that the position of the bolt is changed in the transverse direction, the bolt 5 extends into or exits the lock groove 41, the lock beam 4 is locked or released, and locking and unlocking are achieved.

Further, as shown in fig. 3 and 8, the control circuit 1 controls the motor 2 to rotate, the control circuit 1 includes a first sensor 6, and two triggering elements capable of triggering the motor 2 to stop rotating are arranged on the eccentric wheel 3: the first trigger element 8 and the second trigger element 9, after the motor 2 drives the bolt 5 to a preset position for locking or releasing the lock beam 4, the first sensor 6 detects a signal of the trigger element (8 or 9) and sends a signal to the control circuit 1 to stop the motor 2 from rotating.

In the locking state of the lock beam 4, the first trigger element 8 triggers the first sensor 6 to stop the motor 2 from rotating; in the released state of the shackle 4, the second triggering element 9 triggers the first sensor 6 to stop the rotation of the motor 2. Thereby prevent the heavy current loss that motor 2 stall arouses through the cooperation of first sensor 6 and corresponding trigger component, prolonged the standby time of tool to lock.

Preferably, the first triggering element 8 and the second triggering element 9 are located on the lower surface of the eccentric 3 and are located on both sides of the axial center of the eccentric 3. During unlocking or locking action, the rotation angles of the driving motor 2 are all 180 degrees, and the rotation direction of the motor 2 during unlocking is the same as that of the motor 2 during locking.

Further preferably, the control circuit 1 is connected to the external circuit 300, the external circuit 300 can generate an unlocking signal, the control circuit 1 receives an external unlocking signal to rotate the motor 2 by a certain angle, and the motor 2 drives the eccentric wheel 3 to move the locking bolt 5 out of the locking groove 41 in the lock beam 4, so that the unlocking action is realized.

The control circuit 1 comprises a second sensor 10, and a third trigger element 11 which can trigger locking information is arranged on the lock beam 4; after the lock beam 4 is pressed down, the free end of the lock beam 4 enters the first lock hole 01, the third trigger element 11 on the lock beam 4 triggers the second sensor 10 to enable the motor 2 to rotate for a certain angle, the motor 2 drives the eccentric wheel 3 to enable the bolt 5 to slide into the clamping groove of the lock beam 4, and the lock beam 4 cannot move relative to the lock shell 100 to achieve locking action.

In the practical application process, the locking and unlocking process of the electronic lock is as follows:

as shown in fig. 4-5, during unlocking, the external circuit 300 supplies power to the lock, the external circuit 300 sends an unlocking command to the control circuit 1, and the control circuit 1 starts the motor 2 after receiving the unlocking command, drives the eccentric wheel 3 to rotate counterclockwise, and drives the lock tongue 5 to move from right to left, so that one end of the lock tongue 5 is separated from the lock groove 41 of the lock beam 4 to release the lock.

At this time, the first sensor 6 detects a signal of the second trigger element 9, so that the motor 2 stops rotating, the eccentric wheel 3 is rotated and positioned, the bolt 5 reaches a preset position, and loss caused by idle running of the motor 2 at a limited position is avoided.

After releasing the card, the bolt 5 loses the up-and-down direction limit to the fixed end of the lock beam 4, so that the lock beam 4 can be lifted upwards and the free end of the lock beam 4 is separated from the first lock hole 01, and a locking ring formed by the lock beam 4 and the lock shell 100 is opened to realize unlocking.

As shown in fig. 6-7, during locking, the lock beam 4 is pressed downward, the third trigger element 11 on the lock beam 4 is close to the second sensor 10, so that the second sensor 10 is triggered by a detected signal, the second sensor 10 sends a signal for rotating the motor 2 to the control circuit 1, at this time, the motor 2 continues to rotate 180 degrees forward, and further the lock tongue 5 is driven to move laterally from left to right, so that one end of the lock tongue 5 falls into the lock groove 41 to be clamped.

At this time, the first sensor 6 detects a signal of the first trigger element 8, so that the motor 2 stops rotating, the bolt 5 limits the lock beam 4 in the vertical direction, the lock beam 4 cannot be lifted upwards, the free end of the lock beam 4 cannot be separated from the first lock hole 01, and the lock beam 4 and the lock shell 100 form a ring lock to realize locking.

In this embodiment, preferably, the first sensor 6 and the second sensor 10 are hall sensors, and the first trigger element 8, the second trigger element 9, and the third trigger element 11 are magnetic elements. The first sensor 6 and the second sensor 10 convert the signals into level signals by detecting the magnetic signals emitted by the magnetic elements and transmit the level signals to the control circuit 1, so that the corresponding control function is realized. And preferably, the magnetic element is a rare-element magnet of ru iron boron. It is noted that the first sensor 5 and the second sensor 10 may also be reed switches.

As shown in fig. 3 to 7, as a specific structure of the shackle 4, the fixed end of the shackle 4 is provided with a stopper groove 42, and the stopper groove 42 is disposed below the shackle 41. When the lock is unlocked, the lock tongue 5 is separated from the lock groove 41, the free end of the lock beam 4 is separated from the first lock hole 01, and the fixed end of the lock beam 4 moves upwards from the second lock hole 02 until the front edge of the lock tongue 5 contacts the bottom of the limiting groove 42, so that the lock beam 4 cannot move upwards further, and the fixed end of the lock beam 4 is connected into the lock shell 100.

Further, the fixed end of the lock beam 4 is further provided with a limiting convex part 43, and the limiting convex part 43 is arranged above the lock groove 41 and is larger than the second lock hole 2. When locking, the lock beam 4 is pressed down until the lower edge of the limit convex part 43 touches the top surface of the lock case 100, thereby limiting the lock beam to be pressed down continuously and realizing the positioning function. At this time, the free end of the lock beam 4 extends into the first lock hole 01, and the bolt 5 is driven to be clamped into the lock groove of the lock beam, so that locking is realized.

In this embodiment, the external circuit 300 preferably includes an unlocking device and a battery, and the battery is electrically connected to the control circuit 1 and the motor 2 through a wire, so as to provide electric support for the control circuit 1 and the motor 2. The unlocking device provides an external unlocking command.

Further preferably, the unlocking means may be a fingerprint processor, which is in communication with the control circuit 1. The signal transmission can be realized for wired connection, and the electromagnetic induction connection of wireless communication connection and wireless power supply transmission and reception can also be realized. The external surface of the lock case 100 or the bottom surface of the external circuit 300 board at the bottom is provided with a fingerprint sensor connected with a fingerprint processor, and a user sends unlocking information to the unlocking device through the fingerprint sensor.

In addition, the unlocking device can also be an external unlocking device, including a remote controller, a mobile phone APP and the like, and the external unlocking device performs wireless data interaction with the electronic lock through Bluetooth or other wireless communication modes, so as to send an unlocking signal to the control circuit 1.

As shown in fig. 2 and 3, a mounting frame 400 for mounting the control circuit 1 and the motor 2 is provided in the lock case 100. The mounting frame 400 is nested in the lock case 100, and the mounting frame 400 is provided with an accommodating space for accommodating the control circuit 1 and the motor 2, which spatially divides the inner cavity of the lock case 100 to form a modular assembly part.

Meanwhile, the lower end of the installation frame 400 is connected with a power supply bottom shell provided with an external circuit 300, the installation frame 400 penetrates into the inner cavity of the lock shell 100 from the bottom opening of the lock shell 100, and the power supply bottom shell seals the bottom end of the lock shell 100, so that the electronic lockset is assembled and sealed. And the modular assembly mode enables the assembly and the sealing to be more convenient and faster.

The lock driving mechanism and the electronic lock provided by the invention are described in detail, and the principle and the implementation mode of the invention are explained by applying specific examples, and the description of the embodiments is only used for helping to understand the invention and the core idea. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.

Claims

1. The lock driving mechanism is characterized by comprising a control circuit, a motor, a lock beam and a lock tongue for locking the lock beam, wherein the control circuit controls the motor to rotate, an output shaft of the motor is connected with an eccentric wheel, one end of the lock tongue is connected to the eccentric wheel, and the motor transversely drives the lock tongue to lock or release the lock beam through the eccentric wheel so as to realize locking and unlocking; the control circuit comprises a first sensor, and the eccentric wheel is provided with at least one trigger element which can trigger the motor to stop rotating; after the motor drives the bolt to a preset position for locking or releasing the lock beam, the first sensor detects a signal of the trigger element and sends a signal to the control circuit to enable the motor to stop rotating.

2. The lock driving mechanism as claimed in claim 1, wherein said eccentric is provided with a first trigger member and a second trigger member; in the locking state of the lock beam, the first trigger element triggers the first sensor to stop the motor from rotating; in a lock beam releasing state, the second trigger element triggers the first sensor to stop the motor from rotating.

3. The lock actuating mechanism according to claim 1, wherein said control circuit includes a second sensor, said strike being provided with a third triggering member for triggering locking information; after the lock beam is pressed down, the third trigger element on the lock beam triggers the second sensor to enable the motor to rotate for a certain angle, and the motor drives the eccentric wheel to enable the lock tongue to slide into the lock groove of the lock beam, so that locking action is achieved.

4. The lock driving mechanism as claimed in claim 1, wherein the control circuit receives an external unlocking signal to rotate the motor by a predetermined angle, and the motor drives the eccentric wheel to move the locking bolt out of the locking groove in the lock beam to perform an unlocking operation.

5. The lock drive mechanism as claimed in claim 3, wherein the rotational angle of the drive motor is 180 degrees for both the unlocking and locking actions, and the direction of the unlocking motor is the same as the direction of the locking motor.

6. The lock driving mechanism according to claim 5, wherein the first trigger member and the second trigger member are located on a lower surface of the eccentric wheel and are located on both sides of an axial center of the eccentric wheel.

7. The lock actuation mechanism of claim 3, wherein the first and second sensors are Hall sensors and the first, second and third trigger elements are magnetic elements.

8. The lock driving mechanism as defined in claim 1, wherein a slot with a downward opening is formed at one end of said latch, and an eccentric post is disposed on said eccentric wheel, said eccentric post being adapted to be positioned in said slot, so that said latch is connected to said eccentric wheel.

9. The lock drive mechanism according to claim 1, including a lock housing having a mounting frame for mounting the control circuit and the motor therein and forming a modular assembly.

10. Electronic lock, characterized in that it comprises a lock drive mechanism according to any of claims 1-9.