An electric shaver

Abstract

The utility model provides an electric shaver, belonging to the technical field of daily necessities, including: a charging control module for charging management, an energy storage battery for energy storage, a power conversion element for power conversion, a driving module for driving the electric shaver, a main control chip for calculating data, a switch sensing module for switch control, a charge and discharge indicator light for indicating charging information, an operating mechanism and a blade for driving the blade, a signal connection between the main control chip and the switch sensing module, and a signal connection between the main control chip and the charge and discharge indicator light. In order to save power, the touch sensing chip is often in a dormant state, wakes up every 25ms, reads the capacitance sensing value, and enters dormancy again if there is no trigger. If there is a touch trigger, the corresponding operation is executed, and then the dormancy is entered after the execution, so as to ensure the stable and efficient triggering of the sensing switch and avoid a large amount of power consumption.

Description

Technical Field

[0001] The utility model belongs to the technical field of daily necessities, and in particular relates to an electric shaver. Background Art

[0002] As the name suggests, daily necessities are items needed in life. They include daily necessities such as towels, toothbrushes, shampoo, shower gel, bedding, etc. There are many kinds of daily necessities, covering all aspects of people’s daily life, from basic toiletries to household items, to personal care products, etc. The existence of these supplies makes people’s lives more convenient and comfortable.

[0003] An electric shaver is a convenient and fast shaving tool that uses electric power to drive the blade for shaving. Compared with traditional manual shavers, electric shavers have the following advantages: Convenient and fast: Electric shavers do not require tedious steps such as foaming and shaving like manual shavers. You only need to press the switch to quickly complete the shaving, saving time and effort: Since the blades of electric shavers rotate very fast, you can quickly shave your beard, and there is no need for repeated shaving, saving time and effort. High safety: The blades of electric shavers are usually sharper than those of manual shavers, so they can shave your beard more thoroughly, reducing the risk of irritation and damage to the skin. Multiple functions: Modern electric shavers generally have multiple functions such as cleaning, drying, and trimming. They can not only be used for shaving, but also for facial cleaning and styling. There are many types of electric shavers, including rotary, reciprocating, portable, etc. You can choose according to your personal needs and preferences. At the same time, you also need to pay attention to maintenance and cleaning when using an electric shaver to avoid problems such as bacterial growth and cross infection.

[0004] The shortcomings of existing circuits of electric shavers mainly include the following aspects:

[0005] Long charging time: Traditional electric shavers generally use conventional charging methods, which take a long time to be fully charged and cannot meet the needs of modern people's fast-paced life.

[0006] Short battery life: Since the battery capacity of electric shavers is limited and charging times are frequent, the battery life is relatively short and the battery needs to be replaced frequently, which increases the cost of use and the difficulty of maintenance.

[0007] Charging safety hazards: Traditional electric shavers generally use direct plug-in charging, which has safety hazards such as leakage and short circuit, and is prone to safety accidents.

[0008] Inconvenient charging management: Traditional electric shavers do not have an intelligent charging management system, and cannot intelligently control and adjust the charging process, nor can they intelligently detect and protect the battery, resulting in poor charging effects, shortened battery life and other problems.

[0009] Switch standby power consumption: The induction switch has a high false alarm rate, and there is a problem of long-term power consumption and standby, and there is a problem of service life. Utility Model Content

[0010] The purpose of the utility model is to provide an electric shaver, aiming to solve the problems raised by the background technology.

[0011] A control circuit for an electric shaver, comprising:

[0012] Charging control module, used for charging management;

[0013] Energy storage batteries, used for energy storage;

[0014] Power conversion components, used for power conversion;

[0015] A driving module, used for driving the electric shaver;

[0016] Main control chip, used for calculating data;

[0017] On / off sensor module, used for on / off control;

[0018] Charging and discharging indicator light, used to indicate charging information;

[0019] The operating mechanism and the blade are used to drive the blade;

[0020] There is a signal connection between the main control chip and the power on / off sensing module, a signal connection between the main control chip and the charge and discharge indicator light, a signal connection between the main control chip and the charging control module, a signal connection between the main control chip and the drive module, a signal connection between the main control chip and the power conversion element, an electrical connection between the charging control module and the energy storage battery, an electrical connection between the energy storage battery and the drive module, and a signal connection between the drive module and the operating mechanism and the blade.

[0021] Furthermore, the charging control module includes a charging interface and a charging module, and the main control chip includes an LED1 terminal, an LED2 terminal, an LED3 terminal, a TK1 terminal, a TK2 terminal, an AD3 terminal, an AD4 terminal, a CHRG terminal and an MTCTR terminal.

[0022] Furthermore, the driving module includes a motor control switch, a detection circuit and a motor.

[0023] Further, the main control chip includes the charging interface including six USB ports, a positive pole and a negative pole, two of which are electrically connected to the positive pole, two of which are electrically connected to the negative pole, and the remaining two USB ports are electrically connected to the negative pole through a 5.1 kilo-ohm resistor. The charging module includes a charging control chip, a 100 kilo-ohm resistor, a 2.2 kilo-ohm resistor and a 106 microfarad capacitor. The charging control chip includes eight IO ports, the first IO port is electrically connected to the negative pole and grounded, the two ends of the 106 microfarad capacitor are electrically connected to one end of the positive pole and the negative pole respectively, one end of the 100 kilo-ohm resistor is electrically connected to the 106 microfarad capacitor, and the other end of the 100 kilo-ohm resistor is electrically connected to the eighth IO port, the third IO port is electrically connected to one end of the 106 microfarad capacitor, one end of the 106 microfarad capacitor is electrically connected to the 2.2 kilo-ohm resistor, and the other end of the 2.2 kilo-ohm resistor is electrically connected to the second IO port, and the fifth IO port is electrically connected to the positive pole and the negative pole. A 106 microfarad capacitor is electrically connected to the positive electrode and grounded, one end of the 106 microfarad capacitor is electrically connected to the energy storage battery, one end of the 106 microfarad capacitor is electrically connected to the power conversion element, the power conversion element includes a three-port integrated circuit, two 106 microfarad capacitors, a 104 microfarad capacitor and a 10 ohm resistor, the out end of the three-port integrated circuit is electrically connected to the positive electrode, the out end of the three-port integrated circuit is electrically connected to the 106 microfarad capacitor, and the other end of the 106 microfarad capacitor is electrically connected to the three-port integrated circuit. The gnd terminal of the integrated circuit is electrically connected, the 106 microfarad capacitor is electrically connected to the 104 microfarad capacitor in parallel, the 106 microfarad capacitor and the 104 microfarad capacitor are electrically connected to the gnd terminal of the three-port integrated circuit, the 106 microfarad capacitor and the 104 microfarad capacitor are electrically connected to the VDD terminal, one end of the 106 microfarad capacitor is electrically connected to the 10 ohm resistor, one end of the 10 ohm resistor is electrically connected to the fifth IO port, and one end of the 10 ohm resistor is electrically connected to the IN terminal of the three-port integrated circuit.

[0024] Further, the motor includes a motor, a 4148 diode and a 104 microfarad capacitor, the motor, the 4148 diode and the 104 microfarad capacitor are electrically connected in parallel, one end of the 104 microfarad capacitor is electrically connected to the M-terminal, the motor control switch and detection circuit includes a 47 ohm resistor, an adjustable resistor, two 10 kilo-ohm resistors, a winding resistor, a 2.2 kilo-ohm resistor and two 104 microfarad capacitors, the MTCTR terminal is electrically connected to the 47 ohm resistor, the 47 ohm resistor is electrically connected to one end of the adjustable resistor One end of the 7 ohm resistor is electrically connected to the 10 kilo-ohm resistor, one end of the 10 kilo-ohm resistor is electrically connected to the winding resistor, one end of the winding resistor is grounded, one end of the winding resistor is electrically connected to one end of the adjustable resistor, one end of the winding resistor is electrically connected to the 2.2 kilo-ohm resistor, one end of the 2.2 kilo-ohm resistor is electrically connected to the 104 microfarad capacitor, one end of the 104 microfarad capacitor is electrically connected to the AD3 terminal, and the AD4 terminal is electrically connected to the remaining 10 kilo-ohm resistor. The AD4 terminal is electrically connected to the remaining 104 microfarad capacitor, one end of the 104 microfarad capacitor is grounded, and the other end of the remaining 10 kilo-ohm resistor is set as the M-terminal. The switch sensing module includes a sensing chip, two 10 ohm resistors and a 104 microfarad capacitor. The two ports of the sensing chip are electrically connected to the 10 ohm resistors respectively, and the other ends of the two 10 ohm resistors, the TK1 terminal and the TK2 terminal are electrically connected. One end of the sensing chip is electrically connected to the 104 microfarad capacitor. One end of the 104 microfarad capacitor is electrically connected to the positive electrode, and the other end of the 104 microfarad capacitor is grounded. The charge and discharge indicator light includes five LED lights and three 471 ohm resistors. One end of the five LED lights is grounded, the other end of one of the LED lights is electrically connected to the 471 ohm resistor, and the remaining four LED lights are divided into two groups and electrically connected in parallel. The other end of each group of LED lights is electrically connected to the 471 ohm resistor, and one end of the three 71 ohm resistors, LED1 end, LED2 end and LED3 end are electrically connected.

[0025] An electric shaver also includes a housing, a core assembly, a head assembly and a protective cover;

[0026] The core component is embedded in the inner wall of the shell, the head component matches the core component, the protection cover is rotatably hingedly arranged on the outer wall of the shell, and the protection cover matches the head component.

[0027] Compared with the prior art, the beneficial effects of the utility model are:

[0028] In order to save power, the touch sensing chip is often in sleep mode, wakes up every 25ms, reads the capacitance sensing value, and goes into sleep mode again if there is no trigger. If there is a touch trigger, the corresponding operation is executed and then goes into sleep mode again to ensure stable and efficient triggering of the sensing switch and avoid large power consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0030] Figure 1 This is the principle diagram of the sensing chip of the utility model;

[0031] Figure 2 This is a schematic diagram of the touch sensing layout of the present invention;

[0032] Figure 3 It is a schematic diagram of the induction process of the utility model;

[0033] Figure 4 It is a schematic diagram of the electric shaver of the utility model;

[0034] Figure 5 It is a schematic diagram of the overall system of the utility model;

[0035] Figure 6 It is a schematic diagram of the control circuit of the utility model;

[0036] Figure 7 It is a structural schematic diagram of the induction plate in the utility model.

[0037] In the figure: 1. Shell; 2. Movement assembly; 3. Head assembly; 4. Protective cover; 110. Charging control module; 120. Energy storage battery; 130. Power conversion element; 140. Drive module; 150. Main control chip; 160. Power on / off sensing module; 170. Charge and discharge indicator light; 180. Operating mechanism and blade. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0039] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0040] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0041] See also Figure 1-6 , the technical solution provided by this embodiment is as follows:

[0042] A control circuit for an electric shaver, comprising:

[0043] A charging control module 110, used for charging management;

[0044] Energy storage battery 120, used for energy storage;

[0045] A power conversion element 130, used for power conversion;

[0046] A driving module 140, used for driving the electric shaver;

[0047] A main control chip 150, used for calculating data;

[0048] The on / off sensing module 160 is used for on / off control;

[0049] A charging and discharging indicator light 170, used to indicate charging information;

[0050] The operating mechanism and the blade 180 are used to drive the blade;

[0051] There is a signal connection between the main control chip 150 and the power on / off sensing module 160, a signal connection between the main control chip 150 and the charge and discharge indicator light 170, a signal connection between the main control chip 150 and the charging control module 110, a signal connection between the main control chip 150 and the driving module 140, a signal connection between the main control chip 150 and the power conversion element 130, an electrical connection between the charging control module 110 and the energy storage battery 120, an electrical connection between the energy storage battery 120 and the driving module 140, and a signal connection between the driving module 140 and the operating mechanism and the blade 180.

[0052] Specifically, the charging control module 110 includes a charging interface and a charging module, and the main control chip 150 includes an LED1 terminal, an LED2 terminal, an LED3 terminal, a TK1 terminal, a TK2 terminal, an AD3 terminal, an AD4 terminal, a CHRG terminal and an MTCTR terminal.

[0053] Specifically, the driving module 140 includes a motor control switch, a detection circuit, and a motor.

[0054] Specifically, the main control chip 150 includes a charging interface including six USB ports, a positive pole and a negative pole, two of which are electrically connected to the positive pole, two of which are electrically connected to the negative pole, and the remaining two USB ports are electrically connected to the negative pole through a 5.1 kilo-ohm resistor. The charging module includes a charging control chip, a 100 kilo-ohm resistor, a 2.2 kilo-ohm resistor and a 106 microfarad capacitor. The charging control chip includes eight IO ports, the first IO port is electrically connected to the negative pole and grounded, the two ends of the 106 microfarad capacitor are electrically connected to one end of the positive pole and the negative pole respectively, one end of the 100 kilo-ohm resistor is electrically connected to the 106 microfarad capacitor, and the other end of the 100 kilo-ohm resistor is electrically connected to the eighth IO port, the third IO port is electrically connected to one end of the 106 microfarad capacitor, one end of the 106 microfarad capacitor is electrically connected to the 2.2 kilo-ohm resistor, and the other end of the 2.2 kilo-ohm resistor is electrically connected to the second IO port, and the fifth IO port is electrically connected to 10 6 microfarad capacitor is electrically connected to ground, one end of the 106 microfarad capacitor is electrically connected to the energy storage battery 120, one end of the 106 microfarad capacitor is electrically connected to the power conversion element 130, the power conversion element 130 includes a three-port integrated circuit, two 106 microfarad capacitors, a 104 microfarad capacitor and a 10 ohm resistor, the out end of the three-port integrated circuit is electrically connected to the positive electrode, the out end of the three-port integrated circuit is electrically connected to the 106 microfarad capacitor, the other end of the 106 microfarad capacitor is electrically connected to the gnd end of the three-port integrated circuit, the 106 microfarad capacitor and the 104 microfarad capacitor are electrically connected in parallel, the 106 microfarad capacitor and the 104 microfarad capacitor are electrically connected to the gnd end of the three-port integrated circuit, the 106 microfarad capacitor and the 104 microfarad capacitor are electrically connected to the VDD end, one end of the 106 microfarad capacitor is electrically connected to the 10 ohm resistor, one end of the 10 ohm resistor is electrically connected to the fifth IO port, and one end of the 10 ohm resistor is electrically connected to the IN end of the three-port integrated circuit.

[0055] Specifically, the motor includes a motor, a 4148 diode and a 104 microfarad capacitor, the motor, the 4148 diode and the 104 microfarad capacitor are electrically connected in parallel, one end of the 104 microfarad capacitor is electrically connected to the M-end, the motor control switch and the detection circuit include a 47 ohm resistor, an adjustable resistor, two 10 kilo-ohm resistors, a winding resistor, a 2.2 kilo-ohm resistor and two 104 microfarad capacitors, the MTCTR end is electrically connected to the 47 ohm resistor, the 47 ohm resistor is electrically connected to one end of the adjustable resistor, one end of the 7 ohm resistor is electrically connected to the 10 kilo-ohm resistor, and one end of the 10 kilo-ohm resistor is electrically connected to the The winding resistor is electrically connected, one end of the winding resistor is grounded, one end of the winding resistor is electrically connected to one end of the adjustable resistor, one end of the winding resistor is electrically connected to the 2.2 kilo-ohm resistor, one end of the 2.2 kilo-ohm resistor is electrically connected to the 104 microfarad capacitor, one end of the 104 microfarad capacitor is electrically connected to the AD3 terminal, the AD4 terminal is electrically connected to the remaining 10 kilo-ohm resistor, the AD4 terminal is electrically connected to the remaining 104 microfarad capacitor, one end of the 104 microfarad capacitor is grounded, and the other end of the remaining 10 kilo-ohm resistor is set to the M-terminal. The power on / off sensing module 160 includes a sensing chip, two The two ports of the sensing chip are electrically connected to the 10 ohm resistors, the other ends of the two 10 ohm resistors, the TK1 end and the TK2 end are electrically connected, one end of the sensing chip is electrically connected to the 104 microfarad capacitor, one end of the 104 microfarad capacitor is electrically connected to the positive electrode, and the other end of the 104 microfarad capacitor is grounded. The charge and discharge indicator light 170 includes five LED lights and three 471 ohm resistors. One end of the five LED lights is grounded, the other end of one of the LED lights is electrically connected to the 471 ohm resistor, and the remaining four LED lights are divided into two groups electrically connected in parallel. The other end of each LED group is electrically connected to a 471 ohm resistor, and one end of the three 71 ohm resistors, LED1, LED2 and LED3 are electrically connected. This application adopts capacitive sensing and uses 2-way touch input to detect 3 positions, left / middle / right. The touch stays for 60ms at each position. If it is less than 60ms, it is judged as a false touch. The time interval between each position does not exceed 300ms. If it exceeds 300ms, it is judged as a timeout, and the previous recognition status is cleared to 0. For example: left---middle---if "right" is not detected within 300ms, the touch status of left / middle is cleared to 0, as follows Figure 3 As shown in the figure, in order to save power, the touch sensing chip is often in a dormant state, wakes up every 25ms, reads the capacitance sensing value, and enters dormancy again if there is no trigger. If there is a touch trigger, the corresponding operation is executed and then enters dormancy again. The capacitance value is affected by the ambient temperature and humidity. When the environment changes, the sampled capacitance value will also change. This solution adopts a comparison method, as shown above Figure 2As shown, the left touch and the right touch are affected by the environment in the same way, and the capacitance values ​​increase or decrease at the same time. Then, when the capacitance value on the left changes, the capacitance value on the left is subtracted from the capacitance value on the right and the absolute value is taken, and then compared with the fixed threshold. If the difference is greater than the threshold, it can be determined as a valid trigger. Similarly, when the capacitance value on the right changes, the capacitance value on the right is subtracted from the capacitance value on the left and the absolute value is taken, and then compared with the fixed threshold. If the difference is greater than the threshold, it can be determined as a valid trigger. If sliding to the right, the capacitance value in the middle position is subtracted from the capacitance value in the right position; if sliding to the left, the capacitance value in the middle position is subtracted from the capacitance value in the left position. Because the left and right touch pads are different in size and shape, they are also affected after the shell is installed. The initial values ​​of the left and right capacitance values ​​are also different, so after assembly, it is necessary to read the reference value (manual calibration). During calibration, the touch pad cannot touch other objects.

[0056] An electric shaver comprises: a control circuit as described in any one of the above.

[0057] It also includes a housing 1, a movement assembly 2, a head assembly 3 and a protective cover 4;

[0058] The core assembly 2 is embedded in the inner wall of the housing 1, the head assembly 3 matches the core assembly 2, the protective cover 4 is rotatably hingedly arranged on the outer wall of the housing 1, and the protective cover 4 matches the head assembly 3. The power on / off sensing module 160 matches the opening of the housing 1 for installing the power on / off sensing module 160.

[0059] Working principle:

[0060] The main control chip 150 is used to control the charging control module 110, so that the charging interface and the charging module can stably charge the energy storage battery 120. The power conversion element 130 is used to convert the power supply, and the energy storage battery 120 supplies power to the driving module 140. When the user triggers the switch sensing module 160, the switch signal is given to the main control chip 150. The driving module 140 is used to drive the motor control switch and the detection circuit and the motor, and then drive the operating mechanism and the blade 180 to achieve driving. Then, the remaining power of the energy storage battery 120 can be displayed using the charge and discharge indicator light 170 to help the user pay attention to the power level.

[0061] The existing electric shavers mainly include push-button shavers and induction shavers. Push-button shavers are electric shavers that are turned on and off by physical buttons. Users need to manually press the button to start or turn off the device. Induction shavers are usually equipped with a touch sensor, and users only need to touch the device to turn it on. However, both types of electric shavers have the disadvantage of low sensitivity in turning on and off.

[0062] This electric shaver has the characteristics of high sensitivity in opening and closing. Specifically, it is:

[0063] See also Figure 7 As shown, the electric shaver has a sensor plate 200, which is connected to the power on / off sensor module 160, and a long strip sliding touch area 210 is provided on the sensor plate 200, and a plurality of light-transmitting holes 220 are evenly spaced on the sliding touch area 210, and LED lights are arranged in the light-transmitting holes 220, and the LED lights are electrically connected to the main control chip 150, and a sliding mark 230 is provided below the sliding touch area 210.

[0064] The specific process of turning on and off this electric shaver:

[0065] Power on: In the power-off state, a finger touches the sliding touch area 210 and slides across the entire sensing area along the AB or BA direction (the action cannot be too fast or too slow), and the machine is turned on after all the LED lights light up and then turn off in sequence.

[0066] Power off: In the power on state, the finger touches the sliding touch area 210 and slides across the entire sensing area along the AB or BA direction (the action cannot be too fast or too slow), and all the LED lights light up and then go out in sequence, and then the machine is turned off.

[0067] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An electric shaver, characterized in that: include: A charging control module (110), used for charging management; An energy storage battery (120) for storing energy; A power conversion element (130) for power conversion; A driving module (140), used for driving the electric shaver; A main control chip (150), used for calculating data; A switch sensing module (160) for switch control; A charging and discharging indicator light (170), used to indicate charging information; A running mechanism and a blade (180) for driving the blade; The main control chip (150) is signal-connected to the on / off sensing module (160), the main control chip (150) is signal-connected to the charging and discharging indicator light (170), the main control chip (150) is signal-connected to the charging control module (110), the main control chip (150) is signal-connected to the driving module (140), the main control chip (150) is signal-connected to the power conversion element (130), the charging control module (110) is electrically connected to the energy storage battery (120), the energy storage battery (120) is electrically connected to the driving module (140), and the driving module (140) is signal-connected to the operating mechanism and the blade (180).

2. An electric shaver according to claim 1, characterized in that: The charging control module (110) comprises a charging interface and a charging module.

3. An electric shaver according to claim 2, characterized in that: The driving module (140) comprises a motor control switch, a detection circuit and a motor.

4. An electric shaver according to claim 1, characterized in that: The power on / off sensing module (160) adopts capacitive sensing, uses two-way touch input, detects three positions, left / middle / right, and each position is touched for 60ms. If it is less than 60ms, it is judged as a false touch. The time interval of each position does not exceed 300ms. If it exceeds 300ms, it is judged as a timeout, and the previous recognition state is cleared to 0.

5. The electric shaver according to claim 1, characterized in that: The on / off sensing module (160) matches the opening of the housing (1) and is used for installing the on / off sensing module (160).

6. An electric shaver according to any one of claims 1 to 5, characterized in that: It also includes a housing (1), a movement assembly (2), a head assembly (3) and a protective cover (4); The movement assembly (2) is embedded in the inner wall of the shell (1), the head assembly (3) and the movement assembly (2) are matched with each other, and the protective cover (4) is rotatably hingedly arranged on the outer wall of the shell (1), and the protective cover (4) and the head assembly (3) are matched with each other.

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