Toothbrush control circuit supporting brush head replacement reminding

Abstract

The utility model relates to a toothbrush control circuit supporting brush head replacement reminding. The toothbrush control circuit comprises a main control unit, a dry battery and a boosting unit. Wherein the voltage of the dry battery is first direct-current voltage, and the boosting unit boosts the first direct-current voltage into second direct-current voltage, so that the electric energy of the dry battery is dried, the electric quantity is used up, and the service time is prolonged; the motor driving unit is controlled by the main control unit to drive the hollow cup motor to work; the main control unit counts the working time length of the coreless motor, and controls the three-color lamp to perform corresponding display when the working time length of the coreless motor reaches the rated time length; the three-color lamp also displays the charging state and the electric quantity; therefore, replacement reminding of the brush head of the electric toothbrush is achieved, the circuit is simple, the size is small, and the cost is low.

Description

Technical Field

[0001] The utility model relates to the technical field of electric toothbrush circuits, and more specifically to a toothbrush control circuit supporting a brush head replacement reminder. Background Art

[0002] Most existing electric toothbrushes do not have a brush head replacement reminder function, and users are required to observe with the naked eye whether the brush head needs to be replaced. This often results in a bad brushing experience due to untimely replacement. In addition, the circuits of existing electric toothbrushes are mostly complex and large in size, and the size of the electric toothbrushes cannot be further reduced, which makes it very inconvenient to carry around and can no longer meet people's usage needs. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a toothbrush control circuit which has a simple circuit, a small volume, a low cost and supports a reminder for brush head replacement in view of the above-mentioned defects of the prior art.

[0004] The technical solution adopted by the utility model to solve its technical problems is:

[0005] A toothbrush control circuit supporting brush head replacement reminder is constructed, comprising a main control unit, a dry battery and a boost unit; wherein the voltage of the dry battery is a first DC voltage, the boost unit is connected to the dry battery, and the boost unit boosts the first DC voltage into a second DC voltage;

[0006] The boost unit is connected to a motor drive unit, the motor drive unit includes a coreless motor, and the motor drive unit is controlled by the main control unit to drive the coreless motor to work;

[0007] The main control unit counts the working time of the coreless motor, and controls the three-color light to display accordingly when the working time of the coreless motor reaches the rated time;

[0008] The motor drive unit and the boost unit are both connected to the main control unit, and the main control unit is also connected to the three-color light, which also displays the charging status and power level.

[0009] The toothbrush control circuit supporting brush head replacement reminder of the utility model, wherein the boost unit comprises: a boost chip, an inductor and a jog switch;

[0010] The SW end of the boost chip is connected to the inductor, the other end of the inductor is connected to the positive electrode of the dry battery, and the negative electrode of the dry battery is grounded;

[0011] The EN end of the boost chip is connected to a first resistor and a second resistor, the other end of the first resistor is connected to the momentary switch, the other end of the momentary switch is connected to the VOUT end of the boost chip, the other end of the second resistor is grounded, and the GND end of the boost chip is also grounded.

[0012] The toothbrush control circuit supporting brush head replacement reminder described in the utility model, wherein the model of the boost chip is WDT638B.

[0013] The toothbrush control circuit supporting brush head replacement reminder described in the utility model, wherein the main control unit includes: a microcontroller; the microcontroller model is WDT8M1010C.

[0014] The toothbrush control circuit supporting brush head replacement reminder described in the utility model, wherein the EN end of the boost chip is connected to a third resistor, and the other end of the third resistor is connected to the P12 end of the microcontroller; the EN end of the boost chip is also connected to the P01 end of the microcontroller.

[0015] The toothbrush control circuit supporting brush head replacement reminder of the utility model, wherein the motor drive unit further comprises: a field effect tube and a capacitor;

[0016] The drain of the field effect tube is connected to the capacitor and the first end of the coreless cup motor, and the other end of the capacitor and the second end of the coreless cup motor are both connected to the VOUT end of the boost chip;

[0017] The gate of the field effect tube is connected to the P04 terminal of the microcontroller and the source is grounded.

[0018] The toothbrush control circuit supporting brush head replacement reminder described in the utility model, wherein pin 4 of the three-color light is connected to a fourth resistor and pin 2 is connected to a fifth resistor, pin 1 of the three-color light is connected to a sixth resistor and pin 3 is connected to the VDD terminal of the microcontroller.

[0019] The beneficial effects of the utility model are: the boost unit boosts the first DC voltage into the second DC voltage to squeeze out the power of the dry battery and increase the usage time; the motor drive unit drives the hollow cup motor to work under the control of the main control unit; the main control unit counts the working time of the hollow cup motor, and controls the three-color light to display accordingly when the working time of the hollow cup motor reaches the rated time; the three-color light also displays the charging status and power; thereby realizing a reminder to replace the brush head of the electric toothbrush, and the circuit is simple, the size is small, and the cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the utility model will be further described below in conjunction with the accompanying drawings and embodiments. The drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work:

[0021] Figure 1 It is a circuit schematic diagram of a boost unit and a motor drive unit of a toothbrush control circuit supporting a brush head replacement reminder in a preferred embodiment of the utility model;

[0022] Figure 2 It is a circuit schematic diagram of a main control unit of a toothbrush control circuit supporting a brush head replacement reminder in a preferred embodiment of the utility model;

[0023] Figure 3 It is a circuit schematic diagram of a three-color light of a toothbrush control circuit supporting a brush head replacement reminder in a preferred embodiment of the utility model. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the following will be described clearly and completely in combination with the technical solution in the embodiments of the utility model. Obviously, the described embodiments are partial embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the protection scope of the utility model.

[0025] The toothbrush control circuit supporting the brush head replacement reminder in the preferred embodiment of the utility model is as follows Figure 1 See also Figures 2 to 3 ; including a main control unit 100 and a dry battery (not shown in the figure) and a boost unit 200; wherein the voltage of the dry battery is a first DC voltage, the boost unit 200 is connected to the dry battery, and the boost unit 200 boosts the first DC voltage into a second DC voltage;

[0026] The boost unit 200 is connected to a motor drive unit 300, the motor drive unit 300 includes a coreless motor M1, and the motor drive unit 300 is controlled by the main control unit 100 to drive the coreless motor M1 to work;

[0027] The main control unit 100 counts the working time of the coreless motor M1, and controls the three-color light LED1 to display accordingly when the working time of the coreless motor M1 reaches the rated time;

[0028] The motor drive unit 300 and the boost unit 200 are both connected to the main control unit 100, and the main control unit 100 is also connected to a three-color light LED1, which also displays the charging status and power level;

[0029] The boost unit 200 boosts the first DC voltage into a second DC voltage to squeeze out the power of the dry cell battery and increase the usage time; the motor drive unit 300 drives the coreless motor M1 to work under the control of the main control unit 100; the main control unit 100 counts the working time of the coreless motor M1, and when the working time of the coreless motor M1 reaches the rated time, controls the three-color light LED1 to display accordingly; the three-color light LED1 also displays the charging status and power; thereby realizing a reminder to replace the brush head of the electric toothbrush, and the circuit is simple, the size is small, and the cost is low.

[0030] like Figure 1 and Figure 2 As shown, the boost unit 200 includes: a boost chip U2, an inductor L1, and a momentary switch S1;

[0031] The SW end of the boost chip U2 is connected to the inductor L1, the other end of the inductor L1 is connected to the positive pole of the dry battery, and the negative pole of the dry battery is grounded; the inductor L1 is used to isolate the DC;

[0032] The EN end of the boost chip U2 is connected to a first resistor R5 and a second resistor R2, the other end of the first resistor R5 is connected to a moment switch S1, the other end of the moment switch S1 is connected to the VOUT end of the boost chip U2, the other end of the second resistor R2 is grounded, and the GND end of the boost chip U2 is also grounded; the first resistor R5 and the second resistor R2 are used as a voltage divider, and the moment switch S1 is used to momentarily start the boost chip U2 to work, thereby powering the microcontroller U1.

[0033] like Figure 1 As shown, the model of the boost chip U2 is WDT638B; it has low cost and small size.

[0034] like Figure 2 As shown, the main control unit 100 includes: a microcontroller U1; the microcontroller U1 model is WDT8M1010C; it has low cost and small size.

[0035] like Figure 1 and Figure 2 As shown, the EN terminal of the boost chip U2 is connected to the third resistor R6, and the other end of the third resistor R6 is connected to the P12 terminal of the microcontroller U1; the EN terminal of the boost chip U2 is also connected to the P01 terminal of the microcontroller U1; after the boost chip U2 is instantly started by the inching switch S1, the microcontroller U1 is powered on, and the P12 terminal or P01 terminal of the microcontroller U1 pulls up the EN terminal of the boost chip U2 to achieve self-locking.

[0036] like Figure 1 and Figure 2 As shown, the motor drive unit 300 further includes: a field effect transistor Q1 and a capacitor C3;

[0037] The drain of the field effect tube Q1 is connected to the capacitor C3 and the first end of the hollow cup motor M1, and the other end of the capacitor C3 and the second end of the hollow cup motor M1 are both connected to the VOUT end of the boost chip U2;

[0038] The gate of the field effect transistor Q1 is connected to the P04 terminal of the microcontroller U1 and the source is grounded; the circuit is simple and low in cost, and the capacitor C3 is used for filtering.

[0039] like Figure 2 and Figure 3 As shown, pin 4 of the three-color lamp LED1 is connected to the fourth resistor R2 and pin 2 is connected to the fifth resistor R3, pin 1 of the three-color lamp LED1 is connected to the sixth resistor R4 and pin 3 is connected to the VDD terminal of the microcontroller U1; small size and low cost.

[0040] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the claims attached to the utility model.

Claims

1. A toothbrush control circuit supporting brush head replacement reminder, comprising a main control unit, a dry cell battery and a boost unit; characterized in that: The voltage of the dry battery is a first DC voltage, the boost unit is connected to the dry battery, and the boost unit boosts the first DC voltage into a second DC voltage; The boost unit is connected to a motor drive unit, the motor drive unit includes a coreless motor, and the motor drive unit is controlled by the main control unit to drive the coreless motor to work; The main control unit counts the working time of the coreless motor, and controls the three-color light to display accordingly when the working time of the coreless motor reaches the rated time; The motor drive unit and the boost unit are both connected to the main control unit, and the main control unit is also connected to the three-color light, which also displays the charging status and power level.

2. The toothbrush control circuit supporting brush head replacement reminder according to claim 1, characterized in that: The boost unit includes: a boost chip, an inductor and a jog switch; The SW end of the boost chip is connected to the inductor, the other end of the inductor is connected to the positive electrode of the dry battery, and the negative electrode of the dry battery is grounded; The EN end of the boost chip is connected to a first resistor and a second resistor, the other end of the first resistor is connected to the momentary switch, the other end of the momentary switch is connected to the VOUT end of the boost chip, the other end of the second resistor is grounded, and the GND end of the boost chip is also grounded.

3. The toothbrush control circuit supporting brush head replacement reminder according to claim 2, characterized in that: The model of the boost chip is WDT638B.

4. The toothbrush control circuit supporting brush head replacement reminder according to claim 2, characterized in that: The main control unit includes: a microcontroller; the microcontroller model is WDT8M1010C.

5. The toothbrush control circuit supporting brush head replacement reminder according to claim 4, characterized in that: The EN terminal of the boost chip is connected to a third resistor, and the other end of the third resistor is connected to the P12 terminal of the microcontroller; the EN terminal of the boost chip is also connected to the P01 terminal of the microcontroller.

6. The toothbrush control circuit supporting brush head replacement reminder according to claim 4, characterized in that: The motor drive unit also includes: a field effect tube and a capacitor; The drain of the field effect tube is connected to the capacitor and the first end of the coreless cup motor, and the other end of the capacitor and the second end of the coreless cup motor are both connected to the VOUT end of the boost chip; The gate of the field effect tube is connected to the P04 terminal of the microcontroller and the source is grounded.

7. The toothbrush control circuit supporting brush head replacement reminder according to claim 4, characterized in that: Pin 4 of the three-color lamp is connected to a fourth resistor and pin 2 is connected to a fifth resistor, pin 1 of the three-color lamp is connected to a sixth resistor and pin 3 is connected to the VDD terminal of the microcontroller.

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