Electronic lock device and its inductive activation method

Abstract

An electronic lock device includes a sensing unit, a power supply unit, a control unit, and an actuation unit. The sensing unit includes an antenna circuit and a read-charge module. The antenna circuit receives a wireless signal and outputs a power signal and a communication signal via the read-charge module. The power supply unit receives the power signal and charges, supplying power to the control unit and the actuation unit. After verifying that the authentication data corresponding to the communication signal is correct, the control unit controls the actuation unit to operate, thereby enabling the actuation unit to unlock and lock. Thus, the electronic lock device can obtain power from the wireless signal to achieve wireless charging, and can use the received power to perform unlocking and relocking functions.

Claims

1. An electronic lock device, comprising: a sensing unit including an antenna circuit and a read / charge module, the antenna circuit receiving a wireless signal and outputting a corresponding transmission signal, the read / charge module receiving the transmission signal and outputting at least one of a power signal and a communication signal; a power supply unit electrically connected to the read / charge module, receiving the power signal and charging; a control unit electrically connected to the read / charge module and the power supply unit, receiving power from the power supply unit and receiving the communication signal, and outputting a drive signal when authentication data corresponding to the communication signal matches verification data stored in the control unit; and an actuation unit electrically connected to the power supply unit and the control unit, receiving power from the power supply unit and operating upon receiving the drive signal, and including a motor module having a rotating shaft and a transmission module, the transmission module having a worm gear connected to the rotating shaft, a spring disposed on the worm gear, a clutch assembly connected to the spring, and a cam disengagingly connected to the clutch assembly, the worm gear having The device comprises a helical segment, a propulsion segment and a reset segment located at opposite ends of the helical segment, and a helical toothed section that is not distributed in the propulsion segment and the reset segment. The spring has a sleeve portion that is connected to the worm. When the motor module is running, the shaft drives the worm to rotate forward or backward. The sleeve portion is pushed by the helical toothed section, which causes the spring to move back and forth along the axial direction of the worm. This causes the spring to push against the clutch assembly and move between an unlocked position connected to the cam and a locked position away from the cam. When the sleeve portion moves to the propulsion segment or the reset segment, the spring idles and does not substantially continue to move along the axial direction of the worm.

2. The electronic lock device as claimed in claim 1, wherein, The power supply unit includes a charging circuit electrically connected to the reading and charging module, and a capacitor electrically connected to the charging circuit. The charging circuit receives the power signal and charges the capacitor.

3. The electronic lock device as claimed in claim 2, wherein, This capacitor is a supercapacitor.

4. The electronic lock device as claimed in claim 1, wherein, The clutch assembly has an extension sleeve mounted on the spring and a clutch block connected to the extension sleeve. When the sleeve is helically pushed by the teeth, the spring abuts against the extension sleeve, thereby causing the clutch block to move back and forth along the axial direction of the worm gear, so that the clutch assembly moves between the unlocked position and the locked position.

5. The electronic lock device as claimed in claim 1, wherein, The spring has an open helical structure and is helically fitted onto the helical segment.

6. The electronic lock device as claimed in claim 5, wherein, The connecting part is in the shape of a bent hook and fits onto the spiral section.

7. A method for inductively activating an electronic lock device, applied to the electronic lock device as described in claim 1, and comprising the following steps: a sensing step, wherein the antenna circuit receives a wireless signal and outputs a corresponding transmission signal, and the reading and charging module receives the transmission signal and outputs at least one of a power signal and a communication signal; a charging step, wherein the power supply unit is charged by receiving the power signal from the reading and charging module, and provides power to the control unit and the actuation unit; In one authentication step, the control unit receives the communication signal from the reading charging module. When the authentication data corresponding to the communication signal matches the verification data stored in the control unit, it outputs a drive signal. In another driving step, the actuation unit receives the drive signal from the control unit and causes the motor module to first drive the worm gear to rotate in a first direction, causing the teeth to push the sleeve portion to move towards the advance section, thereby causing the spring to push against the clutch assembly along the advance direction, and causing the clutch assembly to move from the locked position to the unlocked position. Then, the motor module drives the worm gear to rotate in the opposite direction of the first direction, causing the teeth to push the sleeve portion to move towards the reset section, and causing the clutch assembly to move in the opposite direction of the advance direction, and reset to the locked position.

8. The inductive activation method of the electronic lock device as described in claim 7, wherein, In this driving step, the motor module drives the worm gear to rotate in the first direction for a propulsion time, then stops for an unlocking time, and then drives the worm gear to rotate in the opposite direction in the first direction for a reset time before stopping.

9. The inductive activation method of the electronic lock device as described in claim 7, wherein, During this charging step, the control unit is activated after the power supply unit is charged to a predetermined control voltage.

10. The inductive activation method of the electronic lock device as described in claim 9, wherein, The predetermined control voltage is between 2.7V and 3.3V.

11. The inductive activation method of the electronic lock device as described in claim 7, wherein, After the power supply unit is charged to a voltage not less than a predetermined motor voltage, and the control unit determines that the certification data matches the verification data, the control unit controls the operation of the actuation unit.

12. The inductive activation method of the electronic lock device as described in claim 7, wherein, In this sensing step, the duration of the wireless signal is less than a transmission time, which is less than or equal to 5 seconds.

13. The inductive activation method of the electronic lock device as described in claim 7, wherein, In this sensing step, the antenna circuit receives the wireless signal output by an electronic key and maintains a distance of more than 0.5 cm from the electronic key.

14. The inductive activation method of the electronic lock device as described in claim 7, wherein, In this sensing step, the reading charging module decodes the transmitted signal according to the NFC communication protocol to output at least one of the power signal and the communication signal.

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