Charging device and intelligent door lock

Abstract

The utility model relates to intelligent lock technical field discloses a kind of charging device and intelligent door lock.The charging device includes pivot, generator, gear transmission structure and charging circuit, and the pivot is fixedly connected with the door handle of target intelligent door lock;When the door handle is pressed, the pivot rotates along the circumference;The first end of the gear transmission structure is fixedly connected with the pivot;The second end of the gear transmission structure is fixedly connected with the generator;The gear transmission structure is used to transmit power to the generator when the pivot rotates along the circumference, to generate electricity for the generator;Charging circuit, electrically connected with the generator, for transmitting the electric energy generated by the generator to the circuit board of target intelligent door lock, to power supply the circuit board.The above-mentioned charging device can temporarily charge the circuit board of target intelligent door lock when the power supply of target intelligent door lock is insufficient, so that users can smoothly open the door, flexible and convenient.

Description

Technical Field

[0001] This utility model relates to the field of smart lock technology, specifically to a charging device and a smart door lock. Background Technology

[0002] With the development of technology, smart locks are becoming increasingly common in daily life. Smart locks are typically powered by batteries. Natural battery drain or automatic restarts of the circuit board in the smart lock can deplete the battery, preventing it from supplying power and thus rendering the smart lock unusable.

[0003] In related technologies, the battery's remaining power is frequently checked to ensure normal power supply. Users can also carry battery charging equipment to charge the battery or carry a mechanical key to solve the problem of opening the door when the battery is low. However, these solutions are not flexible and convenient enough. Utility Model Content

[0004] In view of this, the present invention provides a charging device and a smart door lock to solve the problem of insufficient power supply to the smart door lock, making opening the door less flexible and convenient. The technical solution is as follows:

[0005] In a first aspect, a charging device is provided, the device comprising:

[0006] A pivot is fixedly connected to the door handle of the target smart door lock; the pivot rotates circumferentially when the door handle is pressed down.

[0007] dynamo;

[0008] A gear transmission structure; the first end of the gear transmission structure is fixedly connected to the rotating shaft; the second end of the gear transmission structure is fixedly connected to the generator; the gear transmission structure is used to transmit the power of the rotating shaft when it rotates in the circumferential direction to the generator so that the generator can generate electricity;

[0009] A charging circuit, electrically connected to the generator, is used to transfer the electrical energy generated by the generator to the circuit board of the target smart door lock to supply power to the circuit board.

[0010] In one optional embodiment, the gear transmission structure includes a first gear; the first gear is coaxially and fixedly connected to the rotating shaft; when the rotating shaft rotates circumferentially, it drives the first gear to rotate.

[0011] In one optional embodiment, the gear transmission structure further includes a second gear; the second gear meshes with the first gear, and the rotation of the first gear drives the second gear to rotate.

[0012] In one optional embodiment, the gear transmission structure further includes a third gear; the third gear meshes with the second gear, and the rotation of the second gear drives the third gear to rotate; the number of teeth of the second gear is greater than the number of teeth of the third gear.

[0013] In one optional embodiment, the gear transmission structure further includes a fourth gear; the fourth gear is coaxially and fixedly connected to the third gear; the number of teeth of the fourth gear is greater than the number of teeth of the third gear.

[0014] In one optional embodiment, the gear transmission structure further includes a fifth gear; the fifth gear is coaxially and fixedly connected to the generator; the fifth gear meshes with the fourth gear, and the rotation of the fourth gear drives the fifth gear to rotate; the number of teeth of the fourth gear is greater than the number of teeth of the fifth gear.

[0015] In one alternative embodiment, the gear transmission structure has a transmission ratio ranging from 1:7 to 1:10.

[0016] In one alternative embodiment, the first end of the gear transmission structure further includes a coupling; the coupling is fixedly connected to the rotating shaft.

[0017] In one optional embodiment, the gear transmission structure further includes a one-way bearing; the one-way bearing is sleeved on the coupling; the one-way bearing is also coaxially and fixedly connected to the first end of the gear transmission structure.

[0018] Secondly, a smart door lock is provided, the smart door lock comprising:

[0019] Door handle;

[0020] Circuit board;

[0021] The charging device as described in the first aspect or any corresponding embodiment; when the door handle is pressed down, the charging device generates electrical energy to supply power to the circuit board.

[0022] The technical solution provided by this utility model can include the following beneficial effects:

[0023] The charging device provided by this utility model includes a rotating shaft, a generator, a gear transmission structure, and a charging circuit. The rotating shaft is fixedly connected to the door handle of the target smart door lock; when the door handle is pressed down, the rotating shaft rotates circumferentially. The first end of the gear transmission structure is fixedly connected to the rotating shaft; the second end of the gear transmission structure is fixedly connected to the generator; the gear transmission structure is used to transmit the power of the rotating shaft rotating circumferentially to the generator to generate electricity; the charging circuit is electrically connected to the generator and is used to transmit the electrical energy generated by the generator to the circuit board of the target smart door lock to supply power to the circuit board. The above-mentioned charging device can temporarily charge the circuit board of the target smart door lock when the power supply to the target smart door lock is insufficient, so that the user can open the door smoothly, flexibly and conveniently. Attached Figure Description

[0024] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of the charging device according to an embodiment of the present utility model;

[0026] Figure 2 This is a front view of the gear transmission structure according to an embodiment of the present utility model;

[0027] Figure 3 This is a bottom view of the gear transmission structure according to an embodiment of the present utility model;

[0028] Figure 4 This is a schematic diagram of the charging circuit according to an embodiment of the present utility model.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1-Shaft; 2-Gear transmission structure; 21-First gear; 22-Second gear; 23-Third gear; 24-Fourth gear; 25-Fifth gear; 26-Coupling; 27-One-way bearing; 3-Generator; 4-Charging circuit; 5-Target smart door lock; 51-Door handle; 52-Circuit board. Detailed Implementation

[0031] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0032] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0033] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0034] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0035] With the development of technology, smart locks are becoming increasingly common in daily life. Smart locks are typically powered by batteries. Natural battery drain or automatic restarts of the circuit board in the smart lock can deplete the battery, preventing it from supplying power and thus rendering the smart lock unusable.

[0036] In related technologies, the battery's remaining power is frequently checked to ensure normal power supply. Users can also carry battery charging equipment to charge the battery or carry a mechanical key to solve the problem of opening the door when the battery is low. However, these solutions are not flexible and convenient enough.

[0037] Figure 1 This is a structural schematic diagram of a charging device according to an embodiment of the present utility model. Figure 1 As shown, the charging device includes a rotating shaft 1, a gear transmission structure 2, a generator 3, and a charging circuit 4.

[0038] The pivot 1 is fixedly connected to the door handle 51 of the target smart door lock 5. When the door handle 51 is pressed down, the pivot 1 rotates circumferentially.

[0039] The first end of the gear transmission structure 2 is fixedly connected to the rotating shaft 1. The second end of the gear transmission structure 2 is fixedly connected to the generator 3. The gear transmission structure 2 is used to transmit the power of the rotating shaft 1 when it rotates in the circumferential direction to the generator 3 so that the generator 3 can generate electricity.

[0040] The charging circuit 4 is electrically connected to the generator 3 and is used to transfer the electrical energy generated by the generator 3 to the circuit board 52 of the target smart door lock 5 to supply power to the circuit board 52.

[0041] Figure 1 The working principle of the charging device shown is as follows:

[0042] The target smart lock 5 can be a smart lock that requires the installation of the charging device. The target smart lock 5 includes a battery, door handle 51, circuit board 52, numeric keypad, fingerprint unlocking device, etc., and can provide users with numeric keypad unlocking or fingerprint unlocking services when the battery is fully charged. When installing the charging device, the rotating shaft 1, gear transmission structure 2, generator 3, and charging circuit 4 are installed inside the target smart lock 5. The charging circuit 4 is electrically connected to the circuit board 52 of the target smart lock 5.

[0043] When the user presses down on the door handle 51 of the target smart door lock 5, the door handle 51 is pressed down, causing the rotating shaft 1 to rotate circumferentially, driving the gears in the gear transmission structure 2 to rotate, which in turn transmits power to the generator 3, causing the generator 3 to rotate and generate electricity. After generating electricity, the generator 3 transfers the electrical energy to the charging circuit 4 through an electrical connection. The charging circuit 4 then temporarily supplies power to the circuit board 52 of the target smart door lock 5, thereby enabling power to the circuit board 52 of the target smart door lock 5 by pressing down the door handle. This avoids the user being unable to open the door due to insufficient battery power of the target smart door lock 5, making it flexible and convenient.

[0044] In one optional embodiment, the gear transmission structure 2 includes a first gear 21, which is coaxially and fixedly connected to the rotating shaft 1. When the rotating shaft 1 rotates in the circumferential direction, it drives the first gear 21 to rotate.

[0045] In one optional embodiment, the gear transmission structure 2 further includes a second gear 22, which meshes with the first gear 21. The rotation of the first gear 21 drives the second gear 22 to rotate. The main function of the second gear 22 is to transmit the kinetic energy generated by the rotation of the first gear 21 to subsequent gears. The transmission ratio of the first gear 21 and the second gear 22 can be set according to requirements, for example, 1:1, indicating that the first gear 21 and the second gear 22 rotate at the same speed.

[0046] In one optional embodiment, the gear transmission structure 2 further includes a third gear 23, which meshes with the second gear 22. When the second gear 22 rotates, it drives the third gear 23 to rotate. The number of teeth of the second gear 22 is greater than the number of teeth of the third gear 23. That is, the transmission ratio between the second gear 22 and the third gear 23 is less than 1, and the rotational speed of the third gear 23 is greater than the rotational speed of the second gear 22. In other words, the second gear 22 and the third gear 23 cooperate with each other to increase the rotational speed.

[0047] In an optional embodiment, the gear transmission structure 2 further includes a fourth gear 24. The fourth gear 24 is coaxially and fixedly connected to the third gear 23, meaning that the third gear 23 and the fourth gear 24 rotate at the same speed. The fourth gear 24 has a greater number of teeth than the third gear 23, and is used to transmit the larger rotational speed of the third gear 23 to the subsequent gears.

[0048] In one optional embodiment, the gear transmission structure 2 further includes a fifth gear 25. The fifth gear 25 is coaxially and fixedly connected to the generator 3, meaning that the fifth gear 25 rotates at the same speed as the rotor of the generator 3. Rotation of the fifth gear 25 drives the rotor of the generator 3 to rotate, thereby generating electrical energy. The fifth gear 25 meshes with the fourth gear 24, and rotation of the fourth gear 24 drives rotation of the fifth gear 25. The number of teeth on the fourth gear 24 is greater than the number of teeth on the fifth gear 25, meaning the transmission ratio between the fourth gear 24 and the fifth gear 25 is less than 1. The rotational speed of the fifth gear 25 is greater than the rotational speed of the fourth gear 24; that is, the fourth gear 24 and the fifth gear 25 cooperate to increase the rotational speed.

[0049] Figure 2 This is a front view of the gear transmission structure according to an embodiment of the present utility model. Figure 3This is a bottom view of the gear transmission structure according to an embodiment of the present invention. It can be seen that the gear transmission structure 2 can transmit the kinetic energy generated by the user pressing down on the door handle to drive the rotating shaft, increase the rotational speed, and finally transmit it to the rotor of the generator 3, enabling the generator 3 to generate electricity. The first gear 21, the second gear 22, and the third gear 23 are located in the same plane, and the fourth gear 24 and the fifth gear 25 are also located in the same plane.

[0050] In one optional embodiment, the transmission ratio of the gear transmission structure 2 is in the range of 1:7 to 1:10. That is, the gear transmission structure 2 can increase the rotational speed transmitted by the shaft 1 by 7 to 10 times and then transmit it to the rotor of the generator 3. In other words, the rotor speed of the generator 3 is 7 to 10 times the rotational speed of the shaft 1. When the user presses down the door handle 51 20 times, the electrical energy generated by the generator 3 can support the circuit board 52 to work for about 20 seconds. This allows the user to temporarily charge the circuit board 52 through the charging device to open the door when the target smart door lock 5 is underpowered.

[0051] In one optional embodiment, the first end of the gear transmission structure 2 further includes a coupling 26, which is fixedly connected to the rotating shaft 1. Specifically, the first end of the gear transmission structure 2 may be the first gear 21, and the coupling 26 is coaxially and fixedly connected to the first gear 21. The coupling 26 is also coaxially and fixedly connected to the rotating shaft 1. The coupling 26 can connect the rotating shaft 1 and the first gear 21, so that the rotating shaft 1 and the first gear 21 can rotate together and transmit motion and torque.

[0052] In one optional embodiment, the shaft 1 is a square steel bar, and the coupling 26 is a square steel coupling 26. The square steel coupling and the square steel bar can be fitted together to achieve a fixed connection.

[0053] In an optional embodiment, the gear transmission structure 2 further includes a one-way bearing 27, which is sleeved on the coupling 26. The one-way bearing 27 is also coaxially and fixedly connected to the first end of the gear transmission structure 2; specifically, the one-way bearing 27 is also coaxially and fixedly connected to the first gear 21. The one-way bearing 27 can only rotate freely in one direction, for example, only clockwise, to prevent reverse rotation. In other words, the one-way bearing 27 allows the shaft 1, the various components in the gear transmission structure 2, and the rotor of the motor 3 to rotate only in one direction, preventing damage caused by reverse rotation of the generator 3.

[0054] In one alternative embodiment, the charging circuit 4 includes a bridge rectifier for rectifying the alternating current generated by the generator 3 into pulsating direct current, which is used to power the circuit board 52 of the target smart lock.

[0055] In one alternative embodiment, the charging circuit 4 further includes an RC filter for smoothing the pulsating DC current, reducing noise and interference, and improving circuit stability.

[0056] Figure 4 This is a schematic diagram of the charging circuit according to an embodiment of the present utility model. Figure 4 As shown, the AC power supply corresponds to generator 3. The positive terminal of the AC power supply is connected to the first terminal of the load in sequence through a first resistor, a first diode, and a second resistor. The positive terminal of the AC power supply is also connected to the first diode through a first capacitor. The negative terminal of the AC power supply is grounded. The negative terminal of the AC power supply is also connected to the second resistor through a second diode. The second terminal of the load is connected to the first diode through a third diode. The second terminal of the load is also connected to the second diode through a fourth diode. The load is also connected in parallel with the second capacitor. This load corresponds to the circuit board 52 of the target smart door lock 5. The first resistor and the first capacitor form an RC filter. The first diode, the second diode, the third diode, and the fourth diode form a bridge rectifier. The second resistor is used for current limiting protection. The second capacitor is used for charging and energy storage.

[0057] The charging device provided in this embodiment includes a rotating shaft, a generator, a gear transmission structure, and a charging circuit. The rotating shaft is fixedly connected to the door handle of the target smart door lock; when the door handle is pressed down, the rotating shaft rotates circumferentially. The first end of the gear transmission structure is fixedly connected to the rotating shaft; the second end of the gear transmission structure is fixedly connected to the generator. The gear transmission structure is used to transmit the power of the rotating shaft rotating circumferentially to the generator to generate electricity. The charging circuit is electrically connected to the generator and is used to transmit the electrical energy generated by the generator to the circuit board of the target smart door lock to supply power to the circuit board. The above-mentioned charging device can temporarily charge the circuit board of the target smart door lock when the power supply to the target smart door lock is insufficient, allowing the user to open the door smoothly and flexibly.

[0058] This embodiment provides a smart door lock, which includes a door handle, a circuit board, and other components. Figure 1 The charging device described in the embodiment or any of its corresponding implementations. In this embodiment, the smart door lock can be the target smart door lock on which the charging device is installed. When the user presses down on the door handle, the door handle is pressed down, causing the charging device to generate electrical energy to supply power to the circuit board.

[0059] Optionally, the smart lock also includes a numeric keypad and a fingerprint sensor. When the door handle is pressed down, the charging device generates electrical energy to power the smart lock's circuit board, numeric keypad, and fingerprint sensor, allowing the user to open the door by entering a password via the numeric keypad or by verifying their fingerprint using the fingerprint sensor.

[0060] As one or more specific application embodiments of this utility model, the optimal implementation scheme or the scheme that the applicant most wants to embody is described below in conjunction with specific application scenarios.

[0061] In this embodiment, when installing the charging device, the thickness of the rear panel of the target smart door lock 5 is increased by 9mm so that the target smart door lock 5 can accommodate the two rows of gears (gears located on two planes) in the gear transmission structure 2. When the user presses down the door handle 51, the square steel drives the rotor of the generator 3 to rotate through the gear transmission structure 2 to generate electromotive force, which provides power to the charging circuit 4 and then supplies power to the circuit board 52.

[0062] The target smart lock 5's printed circuit board (PCB) has a standby current of 50uA and an operating current of 0.1–20mA. The PCB requires approximately 0.4 joules of energy to operate for 20 seconds, plus an additional 0.2 joules for startup. The target smart lock 5's numeric keypad module has an operating current of 10–30mA and requires approximately 0.6 joules of energy to operate for 20 seconds. The target smart lock 5's fingerprint module has an operating current of 50–150mA and requires approximately 2 joules of energy to operate for 20 seconds. The target smart lock 5's wireless module has an operating current of 20–100mA and requires approximately 2 joules of energy to operate for 20 seconds. The target smart lock 5's camera module has an operating current of 200–500mA and requires approximately 10 joules of energy to operate for 20 seconds. The target smart lock 5's bolt motor has an operating current of 300–1000mA and requires approximately 3 joules of energy per action. Therefore, two working states can be designed for the circuit board 52 of the target smart door lock 5. One is the standard state, which is the normal full-power working state, in which all components work normally. The other is the energy storage and one-grip-open state, in which only the circuit board 52, numeric keypad and fingerprint head (fingerprint sensor) enter the working state. After the clutch is verified, the user still needs to manually press down the handle to turn the lock cylinder. After powering on, the numeric keypad module and fingerprint module need about 3 joules of power to work for 20 seconds.

[0063] For example, in the gear transmission structure 2 of the charging device, the tooth ratio between the second gear 22 and the third gear 23 is 28:10, that is, the transmission ratio is 10:28. The tooth ratio between the fourth gear 24 and the fifth gear 25 is 28:10, and the transmission ratio is 10:28. At this time, the total transmission ratio of the gear transmission structure is 10:28 squared. As a result, the potential generated by the generator 3 driven by the gear transmission structure 2 is about 5 volts. When the user presses down the door handle 20 times, it can charge the second capacitor to store 3 joules of energy, which can support the circuit board, numeric keypad, and fingerprint sensor to work for about 20 seconds (the force of pressing down the door handle will vary).

[0064] For example, the first resistor in the charging circuit has a resistance of 300 kiloohms, the second resistor has a resistance of 330 ohms, the first capacitor has a capacitance of 500 nanofarads (nF), and the second capacitor has a capacitance of 1000 microfarads (μF).

[0065] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this utility model.

Claims

1. A charging device, characterized in that, The device includes: A pivot is fixedly connected to the door handle of the target smart door lock; the pivot rotates circumferentially when the door handle is pressed down. dynamo; A gear transmission structure; the first end of the gear transmission structure is fixedly connected to the rotating shaft; the second end of the gear transmission structure is fixedly connected to the generator; the gear transmission structure is used to transmit the power of the rotating shaft when it rotates in the circumferential direction to the generator so that the generator can generate electricity; A charging circuit, electrically connected to the generator, is used to transfer the electrical energy generated by the generator to the circuit board of the target smart door lock to supply power to the circuit board.

2. The apparatus according to claim 1, characterized in that, The gear transmission structure includes a first gear; the first gear is coaxially and fixedly connected to the rotating shaft; when the rotating shaft rotates circumferentially, it drives the first gear to rotate.

3. The apparatus according to claim 2, characterized in that, The gear transmission structure further includes a second gear; the second gear meshes with the first gear, and the rotation of the first gear drives the second gear to rotate.

4. The apparatus according to claim 3, characterized in that, The gear transmission structure further includes a third gear; the third gear meshes with the second gear, and the rotation of the second gear drives the third gear to rotate; the number of teeth of the second gear is greater than the number of teeth of the third gear.

5. The apparatus according to claim 4, characterized in that, The gear transmission structure further includes a fourth gear; the fourth gear is coaxially and fixedly connected to the third gear; the number of teeth of the fourth gear is greater than the number of teeth of the third gear.

6. The apparatus according to claim 5, characterized in that, The gear transmission structure further includes a fifth gear; the fifth gear is coaxially and fixedly connected to the generator; the fifth gear meshes with the fourth gear, and the rotation of the fourth gear drives the fifth gear to rotate; the number of teeth of the fourth gear is greater than the number of teeth of the fifth gear.

7. The apparatus according to any one of claims 1 to 6, characterized in that, The transmission ratio of the gear transmission structure ranges from 1:7 to 1:

10.

8. The apparatus according to claim 7, characterized in that, The first end of the gear transmission structure also includes a coupling; the coupling is fixedly connected to the rotating shaft.

9. The apparatus according to claim 8, characterized in that, The gear transmission structure also includes a one-way bearing; the one-way bearing is sleeved on the coupling; the one-way bearing is also coaxially and fixedly connected to the first end of the gear transmission structure.

10. A smart door lock, characterized in that, The smart lock includes: Door handle; Circuit board; The charging device as described in any one of claims 1 to 9; when the door handle is pressed down, the charging device generates electrical energy to supply power to the circuit board.

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