CN214835488U

CN214835488U - Electronic lock core

Info

Publication number: CN214835488U
Application number: CN202120048815.2U
Authority: CN
Inventors: 李治江; 蔡智恒
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-01-09
Filing date: 2021-01-09
Publication date: 2021-11-23
Anticipated expiration: 2031-01-09

Abstract

The utility model relates to an electronic lock core, which comprises a rotating shaft, a main control board, a motor and a locking pin, wherein the rotating shaft is provided with a mounting hole and a square hole; an eccentric nail is eccentrically arranged on a rotating shaft of the motor, a locking pin is slidably arranged in the square hole, and an elastic piece is arranged between the locking pin and the rotating shaft; the locking pin is provided with a through groove, the eccentric nail extends into the through groove, and the square hole is provided with an avoiding part and a stopping surface; the lower side wall of the eccentric nail acting through groove enables the locking pin to downwards move against the action of the elastic piece until the eccentric nail touches the stopping surface and the motor is locked; eccentric rotary motion is made along the counter-clockwise to eccentric nail, and eccentric nail touches to the prevention face and the motor is locked up changeing, the utility model has the advantages of simple structure, it is stable, can accurately confirm that the lock core is in the state of unblanking or locking.

Description

Electronic lock core

Technical Field

The utility model relates to an electronic lock core.

Background

In the prior art, people often utilize the positioning switch to cooperate with the positioning detection to judge that the lock cylinder is in the state of unblanking or locking, and the circuit is complicated under this kind of mode, and components and parts are many, and the assembly degree of difficulty is big. In order to solve the problem, in chinese patent application No. 2020222220067 entitled electronic lock core, fingerprint lock and fingerprint lock with key lock core, an electronic lock core with simple and stable structure and low standby power consumption is provided, when in use, when an eccentric nail touches the side wall of a notch of a locking pin, a motor is locked, and a main control board judges the completion of unlocking or locking action by detecting the increase of current caused by the locked motor.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a simple structure in addition, it is stable, can confirm accurately that the lock core is in the electronic lock core of unblanking or the state of locking.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

an electronic lock cylinder comprises a rotating shaft, a main control board, a motor and a locking pin, wherein the rotating shaft is provided with a mounting hole in an axial extending manner, and a square hole communicated with the mounting hole is formed in the side wall of the rotating shaft; the motor is controlled by the main control board and is fixedly installed in the installation hole, an eccentric nail is arranged on a rotating shaft of the motor, and the eccentric nail is arranged by deviating from the center of the rotating shaft; the locking pin can be arranged in the square hole in a sliding mode, an elastic piece is arranged between the locking pin and the rotating shaft to enable the locking pin to keep the trend that the top end of the locking pin extends out of the rotating shaft, and the rotating shaft of the motor is arranged coaxially with the rotating shaft; a through groove which penetrates through two adjacent side surfaces in the length direction is formed in one side surface of the locking pin, the eccentric nail extends into the through groove, an avoiding part used for avoiding the operation of the eccentric nail is arranged on one side surface of the square hole, which is parallel to the axial direction of the rotating shaft, and the other side surface is defined as a stopping surface; the motor is connected to the main control board to send an unlocking instruction and then drives the eccentric nail on the rotating shaft to do eccentric rotation motion along the clockwise direction, the lower side wall of the through groove acted by the eccentric nail enables the locking pin to downwards move by overcoming the action of the elastic piece until the eccentric nail touches the stopping surface and the motor is locked, and the main control board judges that the unlocking motion is finished by detecting the current increase caused when the motor is locked; after the set fixed time, the main control board sends a locking instruction to the motor, the motor drives the eccentric nail on the rotating shaft of the motor to do eccentric rotation motion along the anticlockwise direction after receiving the locking instruction, the locking pin keeps the upward movement trend under the action of the elastic piece until the eccentric nail touches the stopping surface and the motor is locked, and the main control board judges that the locking motion is completed by detecting the current increase caused when the motor is locked.

The utility model has the advantages that: the lock cylinder locking device is simple and stable in structure, and can accurately determine that the lock cylinder is in an unlocking or locking state.

Drawings

Fig. 1 is a schematic three-dimensional state diagram of the overall structure of an electronic lock cylinder in the embodiment.

Fig. 2 is an exploded structural schematic diagram of an electronic lock cylinder in the embodiment.

Fig. 3 is a schematic structural diagram of an exploded state of an electronic lock cylinder in another view angle in the embodiment.

Fig. 4 is a front view schematic structure diagram of an electronic lock cylinder in the embodiment.

Fig. 5 is a cross-sectional view at a-a in fig. 4.

Fig. 6 is a sectional view at B-B in fig. 4.

Fig. 7 is a cross-sectional view at C-C in fig. 5 (the tip of the locking pin is retracted out of the axis of rotation as the eccentric pin is rotated to its lowest point and continues to rotate into contact with the stop surface).

Fig. 8 is a cross-sectional view at C-C in fig. 5 (the eccentric pin rotates toward the escape portion, the locking pin is kept in a tendency of springing upward by the spring action, and the eccentric pin is always kept in contact with the lower side wall of the through groove).

Fig. 9 is a cross-sectional view at C-C in fig. 5 (the eccentric pin rotated to the highest point and continued to contact the stop surface, the tip of the locking pin extending into the rotational axis).

Fig. 10 is a cross-sectional view at C-C in fig. 5 (the locking pin is spring-loaded, in a pop-up tendency condition).

Fig. 11 is a schematic three-dimensional state of the overall structure of the locking pin in the embodiment.

FIG. 12 is a schematic diagram showing the relationship between the eccentric travel locus of the eccentric pin and the position of the stop surface in the embodiment. Reference numerals:

Detailed Description

As shown in fig. 1 to 8, an electronic key cylinder 100 includes a knob 1, a main control board 2, a fingerprint sensor 3, and a locking pin 4.

Fingerprint sensor 3 and main control board 2 are connected and fixed mounting in knob 1, and specifically, knob 1 is formed with the installation cavity, is provided with support 11 through the bolt fastening in the installation cavity, and fingerprint sensor 3 is integrated on main control board 2, has a casting die 12 to link together main control board 2 through bolt and support 11.

The installation cavity is also internally provided with a rechargeable battery 13 for supplying power to the main control panel 2, the side surface of the knob 1 is provided with a TYPE-C interface 14 which is integrated on the main control panel 2 and used for charging the rechargeable battery 13, and the rechargeable battery 13 is preferably a lithium battery in practical use.

The side cover of knob 1 is equipped with soft rubber ring 15 that covers TYPE-C interface 14, and the surface interval of soft rubber ring 15 is provided with a plurality of anti-skidding recesses.

A rotary shaft 16 extends axially from one end surface of the knob 1, a mounting hole 161 extends axially from the rotary shaft 16, and a square hole 162 communicating with the mounting hole 161 is provided in a side wall of the rotary shaft 16. More specifically, the square hole 162 has a square shape in cross section perpendicular to the axial direction thereof 162. And the center axis of the square hole 162 is located in a radial direction of the rotation axis 16 passing through the center of the rotation axis 16.

The fixed motor 5 that is provided with in the mounting hole 161 and receives the control of main control board 2, specifically, be provided with on the fuselage of motor 5 and prevent changeing platform 51, support 11 corresponds the platform 51 that prevents changeing of motor 5 and is provided with spacing draw-in groove 111, and when motor 5 installed in mounting hole 161, prevent changeing platform 51 card and establish in spacing draw-in groove 111.

An eccentric nail 52 is arranged on the rotating shaft of the motor 5, and the eccentric nail 52 is arranged by deviating from the center of the rotating shaft; the shape of the locking pin 4 matches the square hole to be slidably disposed in the square hole 162, an elastic member (in this embodiment, the elastic member is a spring 6) is disposed between the locking pin 4 and the rotating shaft 16 to keep the locking pin 4 in a tendency that its tip end protrudes out of the rotating shaft 16, and the rotating shaft of the motor 5 is disposed coaxially with the rotating shaft 16. The depth of the square hole is greater than the length of the locking pin.

As shown in fig. 11, a through groove 41 penetrating through two adjacent side surfaces in the length direction is formed on one side surface of the lock pin 4, the eccentric pin 52 extends into the through groove 41, the maximum diameter D1 of the running track of the eccentric pin 52 is larger than the length L of the through groove 41, one side surface of the square hole 162 parallel to the axial direction of the rotating shaft 16 is provided with an escape portion 164 for escaping the running of the eccentric pin 52, and the other side surface is defined as a stop surface 165.

The motor 5 is connected to the main control board 2 to send out an unlocking instruction and then drives the eccentric nail 52 on the rotating shaft to do eccentric rotation motion along the clockwise direction, the eccentric nail 52 acts on the lower side wall 42 of the through groove 41 to enable the locking pin 4 to downwards move under the action of the elastic piece until the eccentric nail 52 touches the stopping surface 165 and the motor 5 is locked, and the main control board 2 judges that the unlocking motion is finished by detecting the current increase caused when the motor 5 is locked; after the set fixed time, the main control board 2 sends a locking instruction to the motor 5, the motor 5 drives the eccentric nail 52 on the rotating shaft to do eccentric rotation movement along the counterclockwise direction after receiving the locking instruction, the locking pin 4 keeps the upward movement trend under the action of the elastic element until the eccentric nail 52 touches the stopping surface 165 and the motor 5 is locked, and the main control board 2 judges that the locking movement is completed by detecting the current increase caused when the motor 5 is locked.

As shown in fig. 11 and 12, the width D of the through slot 41 is greater than or equal to the maximum diameter D1 of the running track of the eccentric nail 52, so as to ensure that the eccentric nail 52 is not jammed by the through slot 41 during the eccentric motion. The depth H of the through slot 41 is greater than the longest length of the eccentric pin 52 that can extend into the through slot 41.

The action of the locking pin 4 with the locking pin 4 will be briefly described below.

As shown in fig. 7, when the lock cylinder is in the unlocking state, the eccentric pin 52 rotates to the lowest point C and continues to rotate to contact with the stop surface 165, the eccentric pin 52 is stopped by the stop surface 165, and is in the locked state, at this time, the locking pin 4 is driven by the eccentric pin 52 to completely retract into the revolving shaft 16 against the action of the spring 6 and is located at the lowest point, and the main control board 2 determines that the locking pin 4 is in the retracting state by detecting the current increase caused by the locked rotation of the motor 5, that is, determines that the lock cylinder is in the unlocking state. In practical application, as shown in fig. 12, another control method may be used: the eccentric nail 52 rotates to the lowest point C, continues to rotate to contact with the stopping surface 165, the eccentric nail 52 is kept at the unlocking rotation stopping point D by the stopping surface 165 and is in a rotation stopping state, the main control board 2 detects the rotation stopping of the motor 5, the rotation is carried out, the eccentric nail 52 rotates to the lowest point C, and the motor stops rotating.

After the set fixed time, the main control board 2 sends a locking instruction to the motor 5, and the motor 5 drives the eccentric nail 52 on the rotating shaft to do eccentric rotation motion along the counterclockwise direction after receiving the locking instruction.

In the process, as shown in fig. 8, the eccentric pin 52 rotates toward the escape portion 164, the locking pin 4 is kept in a tendency of springing upward by the spring 6, and the eccentric pin 52 is kept in contact with the lower side wall 42 of the through groove 41.

The eccentric nail 52 continuously rotates to the highest point B and continuously rotates to be in contact with the stopping surface 165 (A), the motor 5 is in a locked state at the moment, the locking pin 4 reaches the maximum extending length under the action of the spring 6 at the moment, and the main control board 2 judges that the locking pin 4 is in the extending state by detecting the current increase caused by the locked rotation of the motor 5, namely judges that the lock cylinder is in the locking state. As shown in fig. 9. In practical application, as shown in fig. 12, another control method may be used: the eccentric nail 52 rotates to the highest point B, continues to rotate to contact with the stopping surface 165, the eccentric nail 52 is kept at the unlocking rotation stopping point A by the stopping surface 165 and is in a rotation stopping state, the main control board 2 detects the rotation stopping of the motor 5, the eccentric nail 52 rotates to the highest point B through rotation, and the motor stops rotating.

When the eccentric pin 52 is blocked by the blocking surface 165, the main control board 2 determines the position state of the locking pin 4, and at this time, the locking pin 4 is in a pop-up tendency state under the action of the spring 6, and at this time, if pressed from the direction F by an external force, the locking pin 4 can retract the swiveling spindle 16 without being blocked by the motor 5. As shown in fig. 10.

In this way, the position state of the locking pin 4 can be accurately judged, the locking pin 4 is not pressed by the motor 5 and only acted by the force of the spring 6, and is in a floating state, as shown in the state of fig. 9 and 10, the eccentric nail 52 of the motor 5 only plays a role of limiting the position of the locking pin 4, when the locking pin 4 is pressed by external force, the motor 5 is not influenced, and therefore the motor 5 can be prevented from being damaged.

Still another control mode is that the time required for the eccentric nail 52 to rotate to the lowest point and to move to the highest point when the eccentric nail 52 rotates continuously and contacts with the stop surface 165 (point D) is set as T, the time required for the motor 5 to move when the switch is locked is set as T, when the switch is locked for the first time, the eccentric nail 52 is limited to the point A or the point D under the combined action of the time T and the stop surface 165, and when the switch is locked again, the motor 5 can just move from one point of the point A or the point D to the other point, so that the motor 5 can be prevented from stalling as much as possible, and the electric quantity loss is reduced. And the locking pin 4 is not pressed by the motor 5, only acted by the spring 6 force, and is in a floating state, and at the point A or the point D, the eccentric nail 52 only plays a role of limiting the position of the locking pin 4. When the locking pin 4 is pressed by external force, the motor 5 is not influenced, and the motor 5 can be prevented from being damaged.

The end of the shaft 16 remote from the knob is provided with a toggle protrusion 163 offset from the central axis thereof for interlocking connection with other structure of the lock to lock or unlock the lock.

The lock cylinder has multiple identity authentication modes, not only is a fingerprint authentication mode, but also can adopt modes such as Bluetooth authentication, NFC/IC card authentication and the like, and the above various authentication modes can be used independently or combined in multiple modes to adapt to different use environment requirements.

The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited thereto, and any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principle of the present invention are equivalent replacement modes, and are all included in the scope of the present invention.

Claims

1. An electronic lock cylinder comprises a rotating shaft, a main control board, a motor and a locking pin, wherein the rotating shaft is provided with a mounting hole in an axial extending manner, and a square hole communicated with the mounting hole is formed in the side wall of the rotating shaft; the motor is controlled by the main control board and is fixedly installed in the installation hole, an eccentric nail is arranged on a rotating shaft of the motor, and the eccentric nail is arranged by deviating from the center of the rotating shaft; the locking pin can be arranged in the square hole in a sliding mode, an elastic piece is arranged between the locking pin and the rotating shaft to enable the locking pin to keep the trend that the top end of the locking pin extends out of the rotating shaft, and the locking pin is characterized in that the rotating shaft of the motor is coaxial with the rotating shaft; a through groove which penetrates through two adjacent side surfaces in the length direction is formed in one side surface of the locking pin, the eccentric nail extends into the through groove, an avoiding part used for avoiding the operation of the eccentric nail is arranged on one side surface of the square hole, which is parallel to the axial direction of the rotating shaft, and the other side surface is defined as a stopping surface; the motor is connected to the main control board to send an unlocking instruction and then drives the eccentric nail on the rotating shaft to do eccentric rotation motion along the clockwise direction, the lower side wall of the through groove acted by the eccentric nail enables the locking pin to downwards move by overcoming the action of the elastic piece until the eccentric nail touches the stopping surface and the motor is locked, and the main control board judges that the unlocking motion is finished by detecting the current increase caused when the motor is locked; after the set fixed time, the main control board sends a locking instruction to the motor, the motor drives the eccentric nail on the rotating shaft of the motor to do eccentric rotation motion along the anticlockwise direction after receiving the locking instruction, the locking pin keeps the upward movement trend under the action of the elastic piece until the eccentric nail touches the stopping surface and the motor is locked, and the main control board judges that the locking motion is completed by detecting the current increase caused when the motor is locked.

2. An electronic lock according to claim 1, wherein the square hole depth is greater than the length of the locking pin.

3. An electronic lock cylinder according to claim 1, wherein the center axis of the square hole is located in a radial direction of the rotation axis passing through the center of the rotation axis.

4. An electronic lock cylinder according to claim 1, wherein the width of the through slot is greater than or equal to the maximum diameter of the locus of travel of the eccentric pin.

5. An electronic lock cylinder according to claim 1, wherein the maximum diameter of the locus of travel of the eccentric pin is greater than the length of the through slot.

6. An electronic lock according to claim 1, wherein the depth of the through slot is greater than the longest length of the through slot into which the eccentric pin can extend.

7. The electronic lock cylinder according to any one of claims 1 to 6, further comprising a knob and a fingerprint sensor, wherein the fingerprint sensor and the main control board are connected and fixedly mounted on an end surface of the knob, the other end of the knob extends axially to form the rotating shaft, and the main control board is disposed in the knob.

8. The electronic lock core as claimed in claim 7, wherein the knob is formed with a mounting cavity, a bracket is fixedly disposed in the mounting cavity by a bolt, the fingerprint sensor is integrated on the main control board, and a pressing member connects the main control board to the bracket by the bolt.

9. The electronic lock core of claim 8, wherein a rechargeable battery is further disposed in the mounting cavity for supplying power to the main control panel, and a TYPE-C interface integrated with the main control panel for recharging the rechargeable battery is disposed on a side surface of the knob.

10. The electronic lock core according to claim 7, wherein the body of the motor is provided with an anti-rotation platform, the bracket is provided with a limit slot corresponding to the anti-rotation platform of the motor, and when the motor is installed in the installation hole, the anti-rotation platform is clamped in the limit slot.