CN215651692U - Electric tooth brush - Google Patents

Abstract

The embodiment of the utility model provides an electric toothbrush. The utility model provides an electric toothbrush which comprises a handle, wherein the handle comprises a shell, a display screen, a main control unit and a battery; the main control unit, the display screen and the battery are arranged inside the shell, the battery and the display screen are electrically connected with the main control unit, and the display screen is used for displaying the current state of the battery, wherein the current state of the battery comprises the current electric quantity information of the battery; the area of the housing covering the display screen is made of a material that is light transmissive. According to the electric toothbrush provided by the utility model, the display screen and the main control unit are arranged on the handle of the electric toothbrush, so that a user can clearly, timely and comprehensively know the current state of the battery of the electric toothbrush, such as the current electric quantity information of the battery, and for the user who needs to go out frequently, whether the electric toothbrush needs to be charged in advance or not can be selected according to the current electric quantity information of the battery.

Description

Electric tooth brush

Technical Field

The embodiment of the utility model relates to the technology of electronic products, in particular to an electric toothbrush.

Background

At present, along with the gradual improvement of living standard, people pay more and more attention to oral hygiene. Investigation shows that compared with a manual toothbrush, the electric toothbrush can more thoroughly remove dental plaque, reduce oral diseases such as gingivitis, periodontal disease and gingival bleeding, and gradually enter the broad families.

In the related art, a driving motor is disposed in a handle of an electric toothbrush, and an output shaft of the driving motor is fastened to a brush head after extending out of the handle, so as to drive the brush head to vibrate. The power supply of the driving motor is provided by a battery inside the handle, in some electric toothbrushes, in order to display the specific electric quantity of the electric toothbrush in the use process, a display lamp is arranged on the handle, and when the battery is fully charged or low, the display lamp displays colors or flickers so as to remind a user.

However, the display lamp can only display the full charge of the battery or the low power, and the user cannot obtain detailed information of the power of the battery, which brings inconvenience to the user who needs to go out frequently.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides an electric toothbrush, and aims to solve the problems that the existing electric toothbrush display lamp can only display full power or low power of a battery, a user cannot obtain detailed information of the power of the battery, and inconvenience is brought to the user who needs to go out frequently

The embodiment of the utility model provides an electric toothbrush, wherein a handle comprises a shell, a display screen, a main control unit and a battery;

the main control unit, the display screen and the battery are arranged inside the shell, the battery and the display screen are electrically connected with the main control unit, and the display screen is used for displaying the current state of the battery, wherein the current state of the battery comprises the current electric quantity information of the battery;

the area of the shell covering the display screen is made of a material which can transmit light.

In an optional implementation manner, the casing includes an opaque main body and a transparent soft film, a mounting opening is formed in a side wall of the opaque main body, the mounting opening is opposite to the display screen, and the transparent soft film is located in the mounting opening and is in sealed connection with the mounting opening. As can be understood by those skilled in the art, through the above arrangement, the user can see the information displayed on the display screen from the outer side of the transparent soft film.

In an optional implementation manner, an outer brim is arranged around the edge of the transparent flexible film, and the outer brim is in lap joint and sealing connection with the inner surface of the shell. As can be understood by those skilled in the art, the waterproof performance of the handle can be improved through the arrangement, namely, external water cannot enter the interior of the handle from the joint between the transparent soft film and the opaque main body.

In an optional implementation manner, the transparent soft film and the opaque main body are both plastic pieces, and the transparent soft film and the opaque main body are formed into a whole piece through injection molding. As can be appreciated by those skilled in the art, the strength of the connection between the transparent flexible film and the opaque body can be improved by making the transparent flexible film and the opaque body as a single body through injection molding.

In an optional implementation manner, the casing further comprises a transparent cover body, the transparent cover body is located in the installation opening and covers the outer side of the transparent soft film, the transparent cover body is fixedly connected with the transparent soft film, and the outer surface of the transparent cover body is flush with the outer surface of the opaque main body. As can be understood by those skilled in the art, the aesthetic property of the handle can be improved by arranging the transparent cover body, and on the other hand, the transparent cover body is fixed with the transparent soft film, so that the light transmission effect of the transparent soft film can be improved.

In an alternative implementation, the housing is made of a black translucent material and the brightness of the display screen is configured such that text and/or graphics displayed on the display screen are visible from outside the housing. As will be appreciated by those skilled in the art, the housing is made of a black translucent material so that when the display screen displays information, the user can see the information displayed on the display screen from the outside and when the display screen is off, the user cannot see the components inside the handle.

In an alternative implementation, the housing is made of a transparent material, the housing comprises a non-display area and a display area opposite to the display screen, and the outer surface of the non-display area is coated with an opaque coating. As can be appreciated by those skilled in the art, with the above arrangement, the user can see the information displayed on the display screen while being unable to see the components inside the handle.

In an optional implementation manner, the main control unit comprises a control module and an electric quantity acquisition module, an input end of the electric quantity acquisition module is in communication connection with the battery, an output end of the electric quantity acquisition module is in communication connection with an input end of the main control module, and an output end of the main control module is in communication connection with the display screen. As can be understood by those skilled in the art, the power acquisition module can acquire detailed information of the power of the battery and transmit the signal to the main control module, and the main control module controls the display screen to display the current power information of the battery.

In an optional implementation manner, the handle further comprises a receiving coil, the receiving coil is electrically connected with the battery, and the receiving coil is used for being matched with an output coil of a charger so as to wirelessly charge the battery; alternatively, the first and second electrodes may be,

the handle still includes the joint that charges, charge the joint with the battery electricity is connected. It will be appreciated by those skilled in the art that the arrangement described above may be a wireless or wired charging of the battery.

In an optional implementation manner, the display screen is an LED display screen or an LCD display screen; and/or the presence of a gas in the gas,

the main control unit is an MCU, and the MCU and the display screen are welded on a circuit board arranged in the shell. The technical personnel in the field can understand that LED display screen or LCD display screen intensity is higher, and anti falling performance is strong, is difficult to take place to damage, sets up the main control unit into MCU and all welds on the circuit board with the display screen, and the main control unit drive display screen display information of being convenient for.

As can be appreciated by those skilled in the art, the electric toothbrush of the present invention comprises a handle including a housing, a display screen, a main control unit and a battery; the main control unit, the display screen and the battery are arranged inside the shell, the battery and the display screen are electrically connected with the main control unit, and the display screen is used for displaying the current state of the battery, wherein the current state of the battery comprises the current electric quantity information of the battery; the area of the housing covering the display screen is made of a material that is light transmissive. Therefore, the display screen and the main control unit are arranged on the handle of the electric toothbrush, a user can clearly, timely and comprehensively know the current state of the battery of the electric toothbrush, such as the current electric quantity information of the battery, and the user who needs to go out frequently can select whether to charge the electric toothbrush in advance according to the current electric quantity information of the battery.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive labor.

FIG. 1 is a schematic view of an exploded structure of a power toothbrush provided in accordance with an embodiment of the present invention;

FIG. 2 is a schematic view of the electric toothbrush provided in the present embodiment with the housing removed;

fig. 3 is a schematic structural diagram of a housing according to an embodiment of the present invention;

FIG. 4 is an exploded view of the housing of FIG. 3;

FIG. 5 is a schematic view of a portion of a powered toothbrush according to an embodiment of the present invention;

fig. 6 is a schematic diagram of a main control unit controlling a display screen according to an embodiment of the present invention;

FIG. 7 is a schematic view of a charging mode of the electric toothbrush according to the present invention;

FIG. 8 is a schematic view illustrating a charge control of the electric toothbrush according to the embodiment of the present invention;

FIG. 9 is a schematic view of another charge control for the electric toothbrush according to the present invention;

fig. 10 is a schematic structural diagram of a display screen according to an embodiment of the present invention;

fig. 11 is a schematic structural diagram of a main control unit according to an embodiment of the present invention;

FIG. 12 is a schematic view of a discharge control of the electric toothbrush provided in accordance with the present embodiment;

fig. 13 is a schematic view illustrating another discharge control of the electric toothbrush according to the embodiment of the present invention.

Description of reference numerals:

100-a housing; 110-an opaque body;

111-a mounting port; 120-transparent soft film;

121-outer eaves; 130-a transparent cover;

200-a display screen; 300-a master control unit;

310-electric quantity acquisition module; 320-a control module;

400-a battery; 500-a receiving coil;

600-a circuit board; 610-a rectifying circuit;

620-a filter circuit; 710-an output coil;

720-AC-DC converter; 730-a frequency converter;

800-charging chip; 910-a motor;

920-drive the chip.

Detailed Description

First, it should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present invention, and are not intended to limit the scope of the present invention. And can be modified as needed by those skilled in the art to suit particular applications.

Next, it should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "inside", "outside", and the like are based on the direction or positional relationship shown in the drawings, which are merely for convenience of description, and do not indicate or imply that a device or a member must have a specific orientation, be configured in a specific orientation, and operate, and thus, should not be construed as limiting the present invention.

In the existing electric toothbrush, a driving motor is arranged in a handle, and an output shaft of the driving motor is fixedly connected with a brush head after extending out of the handle so as to drive the brush head to vibrate. The power supply of the driving motor is provided by a battery inside the handle, in some electric toothbrushes, in order to display the specific electric quantity of the electric toothbrush in the use process, a display lamp is arranged on the handle, and when the battery is fully charged or low, the display lamp displays colors or flickers so as to remind a user. However, the display lamp can only display the full charge of the battery or the low power, and the user cannot obtain detailed information of the power of the battery, which brings inconvenience to the user who needs to go out frequently.

After repeated thinking and verification, the inventor finds that if a display screen is arranged inside a handle of the electric toothbrush, the display screen is controlled by a main control unit, and the main control unit acquires the current electric quantity information of a battery, for example, and controls the display screen to display the current electric quantity information. Therefore, the user can directly obtain the current electric quantity of the battery through the display screen, and for the user who needs to go out frequently, whether the electric toothbrush needs to be charged in advance or not can be selected according to the current electric quantity information of the battery.

In view of this, the inventor has designed an electric toothbrush, which includes a handle, and the handle includes a housing, a display screen, a main control unit and a battery. The main control unit, the display screen and the battery are installed in the shell, the battery and the display screen are electrically connected with the main control unit, the display screen is used for displaying the current state of the battery, and the current state of the battery comprises the current electric quantity information of the battery. The area of the housing covering the display screen is made of a material that is light transmissive. Therefore, the user can check the current electric quantity information of the battery through the display screen.

FIG. 1 is a schematic view of an exploded structure of a power toothbrush provided in accordance with an embodiment of the present invention; FIG. 2 is a schematic view of the electric toothbrush provided in the present embodiment with the housing removed; fig. 3 is a schematic structural diagram of a housing according to an embodiment of the present invention; FIG. 4 is an exploded view of the housing of FIG. 3; FIG. 5 is a schematic view of a portion of a powered toothbrush according to an embodiment of the present invention; fig. 6 is a schematic diagram of a main control unit controlling a display screen according to an embodiment of the present invention; FIG. 7 is a schematic view of a charging mode of the electric toothbrush according to the present invention; FIG. 8 is a schematic view illustrating a charge control of the electric toothbrush according to the embodiment of the present invention; FIG. 9 is a schematic view of another charge control for the electric toothbrush according to the present invention; fig. 10 is a schematic structural diagram of a display screen according to an embodiment of the present invention; fig. 11 is a schematic structural diagram of a main control unit according to an embodiment of the present invention; FIG. 12 is a schematic view of a discharge control of the electric toothbrush provided in accordance with the present embodiment; fig. 13 is a schematic view illustrating another discharge control of the electric toothbrush according to the embodiment of the present invention.

As shown in fig. 1, the electric toothbrush provided in this embodiment includes a handle, and it is easy to understand that the handle is in transmission connection with the brush head of the electric toothbrush through an internal motor, and when an output shaft of the motor vibrates, the brush head is driven to vibrate. The handle comprises a shell 100, a display screen 200, a main control unit 300 and a battery, wherein the main control unit 300, the display screen 200 and the battery are installed inside the shell 100, the battery and the display screen 200 are electrically connected with the main control unit 300, the display screen 200 is used for displaying the current state of the battery, and the current state of the battery comprises the current electric quantity information of the battery. Illustratively, the display screen 200 may be disposed near the tail of the handle, and of course, the display screen 200 may be disposed at the middle of the handle or near the head of the handle by those skilled in the art, and the embodiment is not limited thereto. It should be noted that the main control unit 300 can collect the current power of the battery and control the display screen 200 to display the current power of the battery.

The Display screen 200 may be a Light-Emitting Diode (LED) Display screen or a Liquid Crystal Display (LCD), and those skilled in the art can understand that the LED Display screen or the LCD Display screen has higher structural strength than an OLED (Organic Light-Emitting Diode) or an AMOLED (Active Matrix/Organic Light Emitting Diode, Active Matrix Organic Light Emitting Diode panel) LCD Display screen, and the electric toothbrush is not easily damaged after falling from a high place.

It should be noted that the information displayed by the display 200 includes, but is not limited to, the current charge information of the battery, and for example, the display 200 mainly displays the charge and the charging status of the battery during the charging process of the electric toothbrush; in the discharging process of the electric toothbrush, according to different use conditions, the display screen 200 displays information for reminding a user of the battery power condition and prompting a user to clean and the like. In addition, the display 200 may further integrate a voice prompt module for performing voice prompt when the usable time of the electric toothbrush is less than a preset value.

Fig. 1 shows that the housing 100 is a hollow cylindrical structure with two open ends, it should be noted that the cross section of the cylindrical structure is not limited to a circle, and the cross section dimensions of the cylindrical structure may be equal or different. It is easily understood that the region of the housing 100 covering the display screen 200 is made of a light-transmittable material, that is, the region of the housing 100 opposite to the display screen 200 is made of a light-transmittable material so that the user can see the information displayed by the display screen 200 from the outside.

As can be understood by those skilled in the art, by arranging the display screen 200 and the main control unit 300 inside the handle of the electric toothbrush, the main control unit 300 can acquire the capacity value of the battery and control the display screen 200 to display the capacity value during the use or charging process of the electric toothbrush. Therefore, the user can clearly, timely and comprehensively know the current capacity of the battery, and judge whether the electric toothbrush needs to be charged in advance according to the current capacity of the battery.

Several implementations of the housing 100 are described below, but it should be understood by those skilled in the art that the specific implementations of the housing 100 described below should not be considered as specific limitations on the housing 100.

As shown in fig. 1 to 4, in one possible implementation, the housing 100 includes an opaque body 110 and a transparent soft film 120, and a mounting opening 111 is formed in a side wall of the opaque body 110. The mounting opening 111 is opposite to the display 200, that is, the mounting opening 111 is located outside the display 200 and faces the display 200. It should be noted that the area of the mounting hole is not smaller than the display area of the display screen 200, and fig. 1 to 4 show that the cross-sectional area of the display screen 200 is rectangular, and the cross-section of the mounting hole 111 is rectangular matching with the display screen 200, so as to ensure that the opaque main body 110 does not cover the information displayed on the display screen 200. The transparent soft rubber sheet 120 is located in the mounting opening 111 and is connected to the mounting opening 111 in a sealing manner, wherein the transparent soft rubber sheet 120 may be made of a transparent TPE (Thermoplastic Elastomer) material. It is easy to understand that the mounting opening 111 of the opaque body 110 is opposite to the display screen 200 inside the housing 100, and the transparent soft film 120 is disposed in the mounting opening 111, so that the user can see the information displayed on the display screen 200 from the outside of the transparent soft film 120.

Specifically, as shown in fig. 1 to 5, an outer brim 121 is disposed around an edge of the transparent flexible film 120, as shown in fig. 4, the transparent flexible film 120 is a rectangular sheet structure, and the outer brim 121 is formed as a rectangular ring structure surrounding a main body of the transparent flexible film 120, in this embodiment, the length of the outer brim 121 exceeding the main body of the transparent flexible film 120 is not shown, and those skilled in the art can set the outer brim according to actual needs. Fig. 5 shows that the main body of the transparent soft film 120 is embedded inside the mounting opening 111, the outer eaves 121 overlaps and is hermetically connected with the inner surface of the housing 100, i.e., the edge of the mounting opening 111, and the outer eaves 121 may be bonded with the edge of the mounting opening 111 by a sealant. The outer eaves 121 are arranged at the edges of the transparent soft film 120, the outer eaves 121 are in lap joint with the inner surface of the shell 100 and are in sealing connection with the inner surface of the shell 100, and therefore the waterproof performance of the shell 100 can be improved, and external water cannot enter the handle from the connection position between the transparent soft film 120 and the opaque main body 110.

Preferably, the transparent soft film 120 and the opaque body 110 are both plastic pieces, and the transparent soft film 120 and the opaque body 110 are formed into an integral piece through injection molding. Specifically, the housing 100 may be formed by two-shot molding or two-shot molding such that the transparent soft film 120 and the opaque body 110 are formed as one piece. It is easily understood that the transparent soft film 120 is formed as one body with the opaque body 110, which can improve the coupling strength between the transparent soft film 120 and the opaque body 110.

Further, the casing 100 further includes a transparent cover 130, and the transparent cover 130 is located in the installation opening 111 and covers the outer side of the transparent soft film 120. Illustratively, the shape and size of the transparent cover 130 are matched with the mounting opening 111, so that the gap between the transparent cover 130 and the mounting opening 111 can be reduced. It should be noted that the inner surface of the transparent cover 130 is attached and fixedly connected to the outer surface of the transparent flexible film 120, for example, the transparent cover 130 and the transparent flexible film 120 may be fixed by ultrasonic melting. Those skilled in the art can understand that the transparent flexible film 120 and the transparent cover 130 are fixed, so that the effect of the display area of the display screen 200 can be improved, that is, the light emitted by the display screen 200 passes through the transparent flexible film 120 and the transparent cover 130 without scattering, that is, the display screen 200 does not generate "atomization" phenomenon. Preferably, the outer surface of the transparent cover is flush with the outer surface of the opaque body 110, so that the surface of the housing 100 is relatively flat, the overall structure of the handle is more compact, and the overall aesthetic performance of the electric toothbrush is improved.

In another possible implementation, as shown in fig. 1, the housing 100 is made of a black translucent material, and the housing 100 is exemplarily a plastic member, and the injection molding material of the housing 100 is a black fog-permeable material. It is worth mentioning that the brightness of the display screen 200 is configured to enable the text and/or graphics displayed on the display screen 200 to be seen from the outside of the casing 100. When the display screen 200 displays information, light emitted from the display screen 200 can pass through the housing 100 and be seen by a user; when the display screen 200 does not display information, the black translucent casing 100 can shield the display screen 200 and other parts inside the casing 100, thereby improving the aesthetic property of the handle.

In yet another possible implementation manner, the casing 100 is made of a transparent material, and the casing 100 includes a display area and a non-display area, it is easy to understand that the display area is located opposite to the position of the display screen 200 inside the casing 100, and preferably, the size of the display area is the same as the size of the display screen 200. The outer surface of the non-display area is coated with an opaque coating. Through setting up the light-tight coating, make the non-display area of casing 100 form into light-tight state, avoid the user can directly observe the inside spare part of casing 100 from the outside, promote the whole aesthetic property of handle. Illustratively, the housing 100 is a plastic member, the injection molding material of the housing 100 is selected from a transparent material, a coating layer is coated on the surface of the housing 100 after the housing 100 is injection molded, and the coating layer is removed in an area of the surface of the housing 100 opposite to the display screen 200 by using a laser etching process, so that a display area and a non-display area opposite to the display screen 200 are formed on the housing 100.

As shown in fig. 1 and fig. 2, a Circuit Board 600, that is, a PCB (Printed Circuit Board), is further mounted in the housing 100, the Circuit Board 600 may be a long strip-shaped sheet structure, the main control unit 300 and the display screen 200 may be both soldered on the Circuit Board 600, and exemplarily, the main control unit 300 and the display screen 200 are soldered on a surface of the Circuit Board 600 on the same side. The specific structure of the circuit board 600 is not limited herein, and those skilled in the art can set the structure according to actual needs. By soldering the main control unit 300 and the display screen 200 on the circuit board 600, the communication connection between the main control unit 300 and the display screen 200 is realized and the main control unit 300 can drive the display screen 200.

In one possible implementation, as shown in fig. 10 and 11, the main control unit 300 includes eight outputs, SEG0-SEG7, and correspondingly, the display screen 200 includes eight inputs, SEG0-SEG 7. The output terminal of the master control unit 300 is electrically connected to the input terminal of the display screen 200 with the same reference number, for example, the SEG0 of the master control unit 300 is electrically connected to the SEG0 of the display screen 200, and the SEG1 of the master control unit 300 is electrically connected to the SEG1 of the display screen 200. The output end of the main control unit 300 is electrically connected with the input end with the same label of the display screen 200, so that the constant current driving of the main control unit 300 on the display screen 200 can be realized, the display screen 200 is ensured to keep consistent brightness in the using process, and the user experience is further increased.

As shown in fig. 6, the main control unit 300 includes a control module 320 and an electric quantity collecting module 310, an input end of the electric quantity collecting module 310 is communicatively connected to the battery 400, an output end of the electric quantity collecting module 310 is communicatively connected to an input end of the main control module, and an output end of the main control module is communicatively connected to the display screen 200. For example, the power collection module 310 and the Control module 320 may be integrated into a whole, for example, an MCU (Micro Control Unit) may be used as the main Control Unit 300, the MCU is welded on the circuit board 600 inside the casing 100, and the power collection module 310 is a collection module of the MCU.

After the MCU is electrically connected to the battery 400, the electric quantity of the battery 400 is increased during the charging process and decreased during the discharging process, and the electric quantity is accurately calculated according to the conversion efficiency and the internal resistance of the battery 400, so as to obtain the electric quantity of the battery 400. The current battery 400 charge uptime is calculated based on characteristics of the electric toothbrush, such as power of the electric toothbrush. The display screen 200 is electrically connected with the MCU to display the current electric quantity of the battery 400 and the available time of the electric toothbrush, thereby playing a role of prompting for a user.

The electric toothbrush provided by the present embodiment can be charged in two ways, and one possible way is wireless charging, specifically, as shown in fig. 7, the handle includes a receiving coil 500, and the receiving coil 500 is used to cooperate with an output coil 710 of a charger to wirelessly charge the battery 400. The receiving coil 500 is electrically connected to the battery 400, and illustratively, a rectifying circuit 610 is further disposed between the receiving coil 500 and the battery 400, the rectifying circuit 610 may be disposed on the circuit board 600, an input end of the rectifying circuit 610 is connected to an output end of the receiving coil 500, and an output end of the rectifying circuit 610 is connected to the battery 400.

In the process of charging the electric toothbrush, the ac/dc converter 720 of the charger converts ac power into dc power, the inverter 730 converts dc power into ac power matched with the electric toothbrush and outputs the ac power to the output coil 710, the output coil 710 generates a magnetic field, current is generated in the receiving coil 500 according to the electromagnetic induction principle, and the current is rectified by the rectifying circuit 610 and regulated to be supplied to the battery 400 for charging. It should be noted that the output voltage and power of the rectifying circuit 610 can be modulated and demodulated to send signals to the output coil 710, and the output coil 710 adjusts the output power according to the signals of the receiving coil 500, so that the charger can be matched with the electric toothbrush. The embodiment is not limited to the specific modulation and demodulation manner, and those skilled in the art can set the modulation and demodulation manner according to actual needs.

In another possible implementation, the electric toothbrush is charged using a wired charging method. Specifically, the handle is provided with a charging connector, the charging connector can be a USB (Universal Serial Bus) connector, the charging connector can be arranged at the bottom of the handle, it is easy to understand that the charging connector is electrically connected with the battery 400, the charger can directly provide charging voltage for the battery 400 after being connected with the charging connector of the handle, the electric toothbrush is charged by using a wired charging mode, the power limitation of the receiving coil 500 for receiving energy is avoided in the charging process, and faster charging power can be provided for the electric toothbrush.

The battery 400 can be charged by using the charging chip 800 during the charging process of the electric toothbrush, as shown in fig. 8, an external power source enters the charging chip 800 through the filter circuit 620, and the battery 400 is charged by the charging chip 800, wherein the charging chip 800 is in communication connection with the main control unit 300. After the main control unit 300 is in communication connection with the charging chip 800, the charging capacity can be accurately calculated, and an accurate capacity value of the battery 400 can be obtained according to parameters such as the conversion rate, the voltage and the internal resistance of the battery 400. The specific structure of the charging chip 800 is not limited in this embodiment, and a person skilled in the art may select any suitable charging chip 800 according to actual needs, and of course, may also select the existing charging chip 800 on the market.

The main control unit 300 may also be used to control the charging voltage and current to charge the battery 400 during the charging process of the electric toothbrush, as shown in fig. 9, the current input from the external power source may enter the battery 400 through the filter circuit 620, and the main control unit 300 controls the current entering the battery 400 from the filter circuit 620 to further charge the battery 400. Illustratively, a Metal-Oxide-Semiconductor Field-Effect Transistor (MOS Transistor) may be disposed between the filter circuit 620 and the battery 400, the main control unit 300 is electrically connected to the MOS Transistor, the MOS Transistor is controlled to control charging voltage and current, the main control unit 300 performs precise calculation on the charging electric quantity, and a precise capacity value of the battery 400 is obtained according to parameters such as a conversion rate, voltage, and internal resistance of the battery 400.

The electric toothbrush provided in this embodiment has its discharge mainly controlled by the main control unit 300, and it is easy to understand that the discharge of the electric toothbrush mainly refers to the operation of the motor 910 inside the handle, wherein the motor 910 may be a dc brush motor or a cross linear motor.

When the motor 910 is a dc brush motor, as shown in fig. 12, the battery 400 supplies power to the motor 910, the main control unit 300 is connected to a power supply circuit of the motor 910, for example, the power supply circuit of the motor 910 is provided with a MOS transistor, the main control unit 300 is connected to the MOS transistor, and the operating state of the motor 910 is switched by controlling the on/off of the MOS transistor. When the motor 910 is a cross linear motor, as shown in fig. 13, by setting the driving chip 920, as shown in fig. 13, the driving chip 920 is connected with the main control unit 300 through the PWM1 and the PWM2, the M1 and the M2 of the driving chip 920 are used for connecting two input ends of the cross linear motor, the cross linear motor is driven through the driving chip 920 and the working state of the motor 910 is switched, the specific structure of the driving chip 920 is not limited in this embodiment, a person skilled in the art can set the driving chip 920 according to actual needs, and of course, an existing driving chip 920 on the market can also be selected.

In summary, in the electric toothbrush provided in this embodiment, by providing the display screen 200 and the main control unit 300, the main control unit 300 obtains the current power of the battery 400 and controls the display screen 200 to display information. The area of the housing 100 covering the display screen 200 is made of a material that is light transmissive so that the user can see the information displayed on the display screen 200 from outside the housing 100. The display screen 200 may also display information such as charging time, usable time, and the present use time, so that the user can clearly grasp the information of the electric toothbrush.

In the description of the present invention, it is to be understood that the terms "top," "bottom," "upper," "lower" (if any), and the like, as used herein, refer to an orientation or positional relationship as shown in the drawings, which are used for convenience in describing the present invention and to simplify description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The terms "first" and "second" in the description and claims of the present application and the description of the above-described figures are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. An electric toothbrush is characterized by comprising a handle, wherein the handle comprises a shell, a display screen, a main control unit and a battery;

the main control unit, the display screen and the battery are arranged inside the shell, the battery and the display screen are electrically connected with the main control unit, and the display screen is used for displaying the current state of the battery, wherein the current state of the battery comprises the current electric quantity information of the battery;

the area of the shell covering the display screen is made of a material which can transmit light.

2. The electric toothbrush according to claim 1, wherein the housing comprises an opaque body and a transparent soft film, a mounting opening is formed in a side wall of the opaque body, the mounting opening is opposite to the display screen, and the transparent soft film is located in the mounting opening and is in sealed connection with the mounting opening.

3. The electric toothbrush according to claim 2, wherein an outer rim is provided around the edge of the transparent flexible sheet, and the outer rim overlaps and is hermetically connected with the inner surface of the housing.

4. The electric toothbrush according to claim 3, wherein the transparent soft film and the opaque body are both plastic pieces and are formed as a single piece by injection molding.

5. The electric toothbrush according to claim 3, wherein the housing further comprises a transparent cover, the transparent cover is located in the mounting opening and covers the outer side of the transparent soft film, the transparent cover is fixedly connected with the transparent soft film, and the outer surface of the transparent cover is flush with the outer surface of the opaque main body.

6. The electric toothbrush according to claim 1, wherein the housing is made of a black translucent material, and a brightness of the display screen is configured such that text and/or graphics displayed on the display screen are visible from outside the housing.

7. The electric toothbrush of claim 1, wherein the housing is made of a transparent material, the housing includes a non-display area and a display area located opposite the display screen, an outer surface of the non-display area being coated with an opaque coating.

8. The electric toothbrush according to any one of claims 1 to 7, wherein the main control unit comprises a control module and a power collection module, an input end of the power collection module is in communication connection with the battery, an output end of the power collection module is in communication connection with an input end of the main control module, and an output end of the main control module is in communication connection with the display screen.

9. The electric toothbrush according to any one of claims 1 to 7 wherein the handle further comprises a receiving coil electrically connected to the battery, the receiving coil for cooperating with an output coil of a charger to wirelessly charge the battery; alternatively, the first and second electrodes may be,

the handle still includes the joint that charges, charge the joint with the battery electricity is connected.

10. The electric toothbrush according to any one of claims 1 to 7, wherein the display screen is an LED display screen or an LCD display screen; and/or the presence of a gas in the gas,

the main control unit is an MCU, and the MCU and the display screen are welded on a circuit board arranged in the shell.

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