Toothbrush handle, electric toothbrush and wake-up method

Abstract

The application discloses a toothbrush handle, an electric toothbrush and a wake-up method, and relates to the technical field of oral cleaning. The toothbrush handle comprises a main shell, a motor unit, a capacitance sensing unit and a main control unit, wherein the motor unit, the capacitance sensing unit and the main control unit are all installed in the main shell; wherein the main shell comprises a handheld area; the motor unit comprises a conductor shell, and the conductor shell is opposite to the handheld area; an input end of the capacitance sensing unit is connected with the conductor shell, and the capacitance sensing unit detects the sensing capacitance obtained by the conductor shell; and an output end of the capacitance sensing unit is connected with the main control unit. The toothbrush handle provided by the application can simplify the internal structure of the toothbrush handle and improve the detection sensitivity.

Description

Technical Field

[0001] This application relates to the field of oral hygiene technology, and in particular to a toothbrush handle, an electric toothbrush, and a wake-up method. Background Technology

[0002] As people's living standards continue to improve, consumers are paying more attention to the diversification of product experiences. As a result, electric toothbrushes have also begun to have more intelligent features.

[0003] However, existing electric toothbrushes typically require a metal sensor plate to be installed on the inner wall of the handle casing to provide sensing functionality, and the metal sensor plate is connected to the control board, resulting in problems such as complex internal structure and low sensing sensitivity. Summary of the Invention

[0004] The purpose of this application is to provide a toothbrush handle, an electric toothbrush, and a wake-up method, which aims to solve the problems of complex internal structure and low sensitivity of existing electric toothbrushes.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0006] In a first aspect, embodiments of this application provide a toothbrush handle, including a main housing, a motor unit, a capacitive sensing unit, and a main control unit, wherein the motor unit, the capacitive sensing unit, and the main control unit are all installed in the main housing;

[0007] The main housing includes a handheld area;

[0008] The motor unit includes a conductor shell, which is opposite to the handheld area;

[0009] The input terminal of the capacitance sensing unit is connected to the conductor shell and detects the sensing capacitance obtained by the conductor shell. The output terminal of the capacitance sensing unit is connected to the main control unit.

[0010] In one embodiment of the first aspect, the toothbrush handle further includes a first conductive pad and a sensor disk;

[0011] The input terminal is electrically connected to the induction disk;

[0012] One side surface of the first conductor pad is in contact with the induction disk, and the other side surface of the first conductor pad is in contact with the conductor shell.

[0013] In one embodiment of the first aspect, the conductor shell includes a contact area and a sensing area;

[0014] The contact area is in contact with the surface of the first conductor pad away from the induction disk;

[0015] The sensing area is opposite to the handheld area.

[0016] In one embodiment of the first aspect, the first conductor pad is made of conductive foam or conductive silicone.

[0017] In one embodiment of the first aspect, the contact area has a planar structure.

[0018] In one embodiment of the first aspect, the toothbrush handle further includes a second conductor pad, which is disposed around the periphery of the conductor shell and at least in contact with the sensing area;

[0019] The second conductor pad extends from the side of the conductor shell toward the main shell.

[0020] In one embodiment of the first aspect, the second conductor pad is a flexible conductor pad, and the side surface of the second conductor pad away from the conductor shell is attached to the main shell.

[0021] Secondly, embodiments of this application provide an electric toothbrush, including the toothbrush handle as described in the above embodiments.

[0022] Thirdly, embodiments of this application provide an electric toothbrush wake-up method for use with the electric toothbrush described in the above embodiments, the electric toothbrush wake-up method comprising:

[0023] Obtain the capacitance value induced by the conductor shell;

[0024] The capacitance value is determined to be within a preset capacitance range. When the capacitance value is within the preset capacitance range, the capacitance sensing unit outputs a first detection signal and triggers the electric toothbrush to enter a wake-up state.

[0025] In one embodiment of the third aspect, the electric toothbrush wake-up method further includes:

[0026] When the capacitance value is not within the preset capacitance range, the capacitance sensing unit outputs a second detection signal and triggers the electric toothbrush to enter a sleep state.

[0027] The beneficial effects of this application are as follows: This application proposes a toothbrush handle, an electric toothbrush, and a wake-up method. The electric toothbrush includes the toothbrush handle. The toothbrush handle includes a main housing, a motor unit, a capacitive sensing unit, and a main control unit. The motor unit includes a conductive shell opposite to the handheld area in the main housing. The input terminal of the capacitive sensing unit is connected to the conductive shell and can detect the capacitance sensed by the conductive shell. When the user picks up the electric toothbrush, the user's hand can cooperate with the conductive shell to form a capacitor with a certain capacitance value. The capacitive sensing unit can detect the capacitance value sensed by the conductive shell, and the main control unit can wake up the electric toothbrush or put it into sleep mode based on the detection result of the capacitive sensing unit.

[0028] In this application, the motor housing (i.e., the conductor housing) within the motor unit is used as one plate of the sensing capacitor, eliminating the need for an additional metal sensing plate inside the toothbrush handle. This reduces the internal structure of the toothbrush handle, simplifies the assembly process, and improves production efficiency. It also reduces material usage and lowers costs. Furthermore, the conductor housing provides a larger sensing area compared to a traditional metal sensing plate, effectively increasing the area of ​​the plate structure within the sensing capacitor. This allows the capacitor formed by the conductor housing and the user's hand to have a larger capacitance value, facilitating detection by the capacitance sensing unit and thus improving detection sensitivity and user experience. Attached Figure Description

[0029] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 Schematic diagrams of the electric toothbrush in some embodiments are shown;

[0031] Figure 2 A partial cross-sectional structural diagram of the toothbrush handle is shown in some embodiments;

[0032] Figure 3 A schematic diagram of the assembly relationship between the motor unit and the first conductor pad is shown in some embodiments;

[0033] Figure 4 Exploded view diagrams of the motor unit, the first conductor pad, and the circuit board in some embodiments are shown;

[0034] Figure 5 A schematic diagram of a portion of the structure in the toothbrush handle is shown in some embodiments;

[0035] Figure 6A cross-sectional structural schematic diagram of the toothbrush handle is shown in some other embodiments;

[0036] Figure 7 A flowchart illustrating the electric toothbrush wake-up method in some embodiments is shown.

[0037] Explanation of key component symbols:

[0038] 100-Handle; 10-Main housing; 101-Mounting cavity; 102-Handheld area; 20-Motor unit; 21-Conductor housing; 211-Contact area; 212-Sensing area; 22-Output shaft; 30-Capacitive sensing unit; 40-Main control unit; 51-Sensing disk; 52-First conductor pad; 53-Second conductor pad; 60-Circuit board; 200-Brush head. Detailed Implementation

[0039] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0040] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0041] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0042] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0043] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0044] Example 1

[0045] The embodiment provides an electric toothbrush that can be used for oral hygiene.

[0046] like Figure 1 As shown, an electric toothbrush may include a toothbrush handle (hereinafter referred to as handle 100) and a brush head 200. The brush head 200 is connected to the handle 100 and can be driven by the handle 100 to vibrate, thereby providing a cleaning function for the user's oral cavity.

[0047] like Figure 2 and Figure 5 As shown, the handle 100 may include a main housing 10, a motor unit 20, a capacitive sensing unit 30, and a main control unit 40.

[0048] The main housing 10 serves as the mounting carrier for the handle 100, and other structural components of the handle 100 can be attached to the main housing 10 for installation. In this embodiment, the interior of the main housing 10 is hollow, forming a mounting cavity 101. The motor unit 20, the capacitive sensing unit 30, and the main control unit 40 can all be installed within the mounting cavity 101 of the main housing 10, and the main housing 10 can provide protection for these structures.

[0049] In some embodiments, the main housing 10 is made of an insulating material. Exemplarily, the main housing 10 may be made of polyvinyl chloride (PVC). In embodiments, the main housing 10 may include a handhold area 102. It is understood that when a user picks up the electric toothbrush, the user's hand can hold it in the handhold area 102.

[0050] Combined again Figure 3 The motor unit 20 may include a conductor shell 21. It is understood that the conductor shell 21 can serve as a mounting carrier for other structural components within the motor unit 20. The conductor shell 21 can be fixedly installed within the main housing 10, and the conductor shell 21 can be positioned opposite to the handheld area 102. In this embodiment, the conductor shell 21 may be made of a conductor, i.e., the conductor shell 21 may have conductive properties.

[0051] In this embodiment, the capacitive sensing unit 30 may include an input terminal and an output terminal. The input terminal of the capacitive sensing unit 30 is electrically connected to the conductor housing 21, and the output terminal of the capacitive sensing unit 30 may be electrically connected to the main control unit 40.

[0052] Understandably, when a user's hand approaches or touches the handheld area 102, the user's hand can cooperate with the conductive shell 21 to form an inductive capacitor with a certain capacitance value. The conductive shell 21 can serve as one plate structure of the inductive capacitor, referred to as the first plate structure. The user's hand can serve as the other plate structure of the inductive capacitor, i.e., the second plate structure. Furthermore, the capacitance value of the inductive capacitor formed by the cooperation of the conductive shell 21 and the user's hand can be referred to as the touch capacitance.

[0053] Correspondingly, when the user's hand moves away from the handheld area 102, the conductor shell 21 can also sense a certain capacitance due to external environmental factors, which can be recorded as the ambient capacitance. It is understood that the ambient capacitance can be significantly different from the touch capacitance. In this embodiment, a preset capacitance range can be set in the main control unit 40 based on the touch capacitance. For example, the preset capacitance range can be set to 0.2pF-50pF.

[0054] The capacitance sensing unit 30 can detect the capacitance value sensed by the conductor shell 21 and send a corresponding detection signal to the main control unit 40 based on the detection result. Then, the main control unit 40 can control the electric toothbrush to operate based on the detection signal.

[0055] When the capacitive sensing unit 30 detects that the capacitance value sensed by the conductor shell 21 is within a preset capacitance range, it indicates that the user's hand is close to or touching the handle 100. The capacitive sensing unit 30 can send a first detection signal to the main control unit 40, and the main control unit 40 can put the electric toothbrush into a wake-up state based on the first detection signal.

[0056] When the capacitive sensing unit 30 detects that the capacitance value sensed by the conductor shell 21 is not within the preset capacitance range, it indicates that the user's hand is not close to or touching the handle 100. The capacitive sensing unit 30 can send a second detection signal to the main control unit 40, and the main control unit 40 can put the electric toothbrush into a sleep state according to the second detection signal.

[0057] In some embodiments, the first detection signal and the second detection signal can be set as needed. For example, the first detection signal can be a low level, such as 0V. The second detection signal can be a high level, such as 3.3V.

[0058] This enables the electric toothbrush to be picked up and woken up, preparing the user for subsequent operations, such as mode switching.

[0059] Of course, in other embodiments, other functions of the electric toothbrush, such as audio playback and indicator / scrolling light illumination, can also be controlled by detecting whether the user is near or touches the handle 100.

[0060] In existing technologies, multiple metal sensors are typically arranged inside the handle 100 to provide sensing functionality. This increases material costs and also complicates the internal structure of the handle 100, increasing assembly difficulty and reducing production efficiency.

[0061] In this embodiment, the conductor shell 21 is used as one plate of the sensing capacitor, eliminating the need for an additional metal sensing plate inside the main housing 10. This simplifies the internal structure of the handle 100, reduces assembly difficulty, improves assembly efficiency, and also reduces material costs.

[0062] Furthermore, it is understood that the outer surface of the conductor shell 21 typically has a large area, significantly larger than that of a traditional metal sensing sheet. In this embodiment, the conductor shell 21 serves as one electrode structure of the sensing capacitor, which significantly increases the sensing area compared to existing technologies. It is understood that the area of ​​the electrode structure is directly proportional to the capacitance of the capacitor. Therefore, the capacitance value of the sensing capacitor can be increased. For ease of understanding, the larger the capacitance value, the higher the probability of detection, i.e., the higher the chance of being detected by the capacitive sensing unit 30. This improves touch detection efficiency and sensitivity, enabling the electric toothbrush to respond quickly and enhancing the user experience.

[0063] Furthermore, in existing technologies, the metal sensor is typically attached to the mainboard of an electric toothbrush, resulting in a significant distance between it and the user's hand. Understandably, there is usually a small gap between the conductor shell 21 and the main housing 10. In this embodiment, by using the conductor shell 21 as one plate structure of the sensing capacitor, a smaller distance can be maintained between it and the user's hand, thus shortening the distance between the first and second plate structures in the sensing capacitor. It is well known that the distance between the two plate structures in a capacitor is inversely proportional to the capacitance. Therefore, the capacitance value of the sensing capacitor can be further increased, thereby improving the detection sensitivity.

[0064] like Figures 1 to 3 As shown, the motor unit 20 may further include a core (not shown) and an output shaft 22. The core may be located inside the conductor housing 21. One end of the output shaft 22 may be inserted into the conductor housing 21 and connected to the rotor in the core. The end of the output shaft 22 away from the core may pass through the main housing 10 and be exposed relative to the main housing 10.

[0065] In this embodiment, the brush head 200 can be detachably connected to the end of the output shaft 22 away from the motor by means of tight fitting, screw connection, or other methods. When the electric toothbrush is working, the motor drives the output shaft 22 to vibrate, which in turn drives the brush head 200 to vibrate, thereby providing oral cleaning function.

[0066] In some embodiments, the conductor shell 21 may be made of iron. Accordingly, the conductor shell 21 can have a larger dielectric constant, thus giving the plate structure of the sensing capacitor a larger dielectric constant. The capacitance value of the sensing capacitor can be further increased, i.e., the touch capacitance can be further increased, making it easier for the capacitive sensing unit 30 to detect the touch capacitance, and further improving the response speed of the electric toothbrush.

[0067] like Figures 3 to 5 As shown, the handle 100 also includes a circuit board 60. In some embodiments, the capacitive sensing unit 30 and the main control unit 40 can both be integrated on the circuit board 60 for mounting within the main housing 10. In the embodiments, the circuit board 60 can be fixedly connected to the main housing 10, the circuit board 60 can be located on one side of the motor unit 20, and the circuit board 60 can be opposite to the conductor shell 21.

[0068] In other embodiments, the handle 100 may also include a bracket (not shown), which can be fixed to the main housing 10 by means of screw connection, structural limiting, etc. The conductor shell 21 and the circuit board 60 can be installed on the bracket.

[0069] In some embodiments, the capacitive sensing unit 30 may include a capacitive sensing chip, which may be soldered to the side of the circuit board 60 away from the motor unit 20. The input pins of the capacitive sensing chip may serve as the input terminals of the capacitive sensing unit 30. Correspondingly, the input pins of the capacitive sensing chip may be electrically connected to the conductor housing 21.

[0070] During use, the capacitive sensing chip can monitor the capacitance value sensed by the conductor shell 21 in real time and compare the detected capacitance value with a preset capacitance range to send a corresponding detection signal to the main control unit 40. The main control unit 40 can then put the electric toothbrush into a wake-up state or a sleep state based on the detection signal sent by the capacitive sensing chip. Furthermore, when the electric toothbrush is in sleep mode, the capacitive sensing chip can also perform self-calibration and de-jitter operations on the ambient capacitance to ensure operational stability and anti-interference capabilities.

[0071] like Figure 3 and Figure 4 As shown, the handle 100 also includes a sensing disk 51. The sensing disk 51 can be disposed on the side of the circuit board 60 near the conductor shell 21, and the sensing disk 51 can be opposite to the conductor shell 21. In this embodiment, the sensing disk 51 can be electrically connected to the input pin of the capacitive sensing chip through traces on the circuit board 60.

[0072] The handle 100 may also include a first conductor pad 52. The first conductor pad 52 may be sandwiched between the induction disk 51 and the conductor shell 21 to realize the electrical connection between the induction disk 51 and the conductor shell 21.

[0073] In other embodiments, the induction disk 51 may also be in direct contact with the conductor shell 21 for electrical connection.

[0074] In other embodiments, the input pins of the capacitive sensing chip may also be directly connected to the conductor shell 21, or connected via copper wires or other means.

[0075] like Figure 3 and Figure 4 As shown, the circumferential surface of the conductor shell 21 may include a contact area 211 and a sensing area 212. The contact area 211 may be opposite to the sensing disk 51, and the sensing area 212 may be opposite to the handheld area 102 of the main shell 10. The sensing area 212 may cooperate with the user's hand to form a sensing capacitor.

[0076] In this embodiment, one side surface of the first conductor pad 52 can be tightly bonded to the induction disk 51 by means of adhesive bonding, compression, or other methods, ensuring a tight connection between the first conductor pad 52 and the induction disk 51. The other side surface of the first conductor pad 52, away from the induction disk 51, can also be tightly bonded to the contact area 211 of the conductor shell 21 by means of adhesive bonding, compression, or other methods. Thus, the first conductor pad 52 and the induction disk 51 can achieve an electrical connection between the capacitive sensing chip and the conductor shell 21.

[0077] In some embodiments, the first conductor pad 52 may be a flexible conductor pad, thereby ensuring that the first conductor pad 52 fits tightly against the sensing pad 51 and the conductor shell 21 respectively. In some embodiments, the first conductor pad 52 may be made of conductive foam. The conductive foam has a relatively large dielectric constant, ensuring that the touch capacitor has a large capacitance value.

[0078] In other embodiments, the first conductor pad 52 may also be made of conductive silicone.

[0079] Of course, in other embodiments, the first conductor pad 52 may be made of a relatively rigid structure such as an iron pad.

[0080] like Figure 3 As shown, the contact area 211 can be further configured as a planar structure, which can increase the contact area between the conductor shell 21 and the first conductor pad 52, and further improve the connection performance between the first conductor pad 52 and the conductor shell 21.

[0081] In some embodiments, the area of ​​the contact area 211 may be greater than or equal to the area of ​​the surface of the first conductor pad 52 opposite to the conductor shell 21. That is, the surface of the first conductor pad 52 away from the circuit board 60 may be completely attached to the contact area 211.

[0082] Of course, in some other embodiments, it is not excluded that the area of ​​the contact area 211 is smaller than the area of ​​the surface of the first conductor pad 52 opposite to the conductor shell 21.

[0083] It is understandable that the transmission of electrical signals on circuit board 60 will inevitably cause certain parasitic capacitance, which may interfere with the detected capacitance signal.

[0084] In this embodiment, the trace spacing on the circuit board 60 can be greater than the trace width on the circuit board 60. In some embodiments, the trace spacing on the circuit board 60 can be set to 5 mil to 6 mil. This reduces the parasitic capacitance generated during the operation of the circuit board 60. Smaller parasitic capacitance reduces interference with the detected capacitance signal, resulting in higher sensitivity, allowing the capacitance sensing chip to accurately obtain the capacitance value sensed by the conductor shell 21. For example, the trace spacing on the circuit board 60 can be set to 5 mil, 5.2 mil, 5.35 mil, 5.5 mil, 5.7 mil, 6 mil, etc.

[0085] Understandably, the capacitive sensing unit 30 may also include multiple sets of peripheral circuits connected to the capacitive sensing chip, such as power supply circuits. The capacitive sensing chip can be connected to the power supply, main control unit 40, etc., through the peripheral circuits.

[0086] The main control unit 40 may include a processor (not shown), a memory (not shown), etc., and can be used to control the operation of various electrical components in the handle 100. Of course, the circuit board 60 may also integrate adapter circuits such as a charging circuit module, a protection circuit module, and a step-down circuit module to ensure the normal operation of the handle 100, which will not be described in detail here.

[0087] Understandably, the handle 100 may also include a power supply (not shown), an operation button group, an indicator light group (not shown), etc., and the power supply, operation button group, and indicator light group can all be integrated on the circuit board 60. When using the electric toothbrush, the power supply can power the various electrical components in the handle 100. In some embodiments, the power supply can be a rechargeable battery. The operation button group may be exposed relative to the main housing 10, and the user can use the operation button group to perform operations such as mode switching and motor unit 20 switching. The indicator light group may also be exposed relative to the main housing 10, and the indicator light group can be used to display the working status, working mode, etc. of the electric toothbrush, so that the user can know the working status and working mode of the electric toothbrush, and can also improve the user experience. In the embodiment, the operation button group and the indicator light group may be exposed on the same side relative to the main housing 10. Correspondingly, the handheld area 102 may be located on the side of the main housing 10 away from the operation button group and indicator light group. Of course, the handheld area 102 may extend to the edge of the area where the operation button group and indicator light group are located.

[0088] When the user picks up the electric toothbrush, the capacitive sensing unit 30 detects that the capacitance sensed by the conductor shell 21 is within a preset capacitance range. The capacitive sensing unit 30 then sends a first detection signal to the main control unit 40, which wakes up the electric toothbrush based on the first detection signal to prepare for subsequent operations. Subsequently, the user can select the operating mode of the electric toothbrush using the operation button group and control the motor unit 20 to turn it on and off. When the user releases the electric toothbrush, the capacitive sensing unit 30 detects that the capacitance sensed by the conductor shell 21 is outside the preset capacitance range. The capacitive sensing unit 30 then sends a second detection signal to the main control unit 40, which puts the electric toothbrush into sleep mode based on the second detection signal.

[0089] Example 2

[0090] The embodiment provides an electric toothbrush, which, based on embodiment one, further includes:

[0091] like Figure 3 and Figure 6 As shown, the handle 100 also includes a second conductor pad 53. The second conductor pad 53 can be disposed around the circumference of the conductor shell 21, and the surface of the second conductor pad 53 near the conductor shell 21 can be tightly fitted with the sensing area 212 of the conductor shell 21. For example, the second conductor pad 53 and the conductor shell 21 can be tightly fitted by means of bonding, compression, etc. The second conductor pad 53 can cooperate with the conductor shell 21 to serve as one electrode structure of the sensing capacitor.

[0092] In other embodiments, the second conductor pad 53 may also extend to the side of the conductor shell 21 near the circuit board 60, but avoids the contact position of the first conductor pad 52.

[0093] The side of the second conductor pad 53 away from the conductor shell 21 can extend towards the main shell 10 and is opposite to the handheld area 102. In some embodiments, the surface of the second conductor pad 53 away from the conductor shell 21 can be tightly fitted with the surface of the main shell 10 near the mounting cavity 101. For example, the second conductor pad 53 and the main shell 10 can be tightly fitted by means of bonding, compression, etc.

[0094] In other embodiments, a gap may also be provided between the second conductor pad 53 and the main housing 10 on the side surface away from the conductor shell 21.

[0095] In this embodiment, the area of ​​the surface of the second conductor pad 53 near the main housing 10 is larger than the area of ​​the sensing area 212 in the conductor housing 21. This further expands the sensing area of ​​the electrode structure in the sensing capacitor. Additionally, it further reduces the distance between the two electrode structures in the sensing capacitor. This further increases the capacitance of the sensing capacitor and improves detection sensitivity. Simultaneously, it allows for a larger range of motion for the user's hand to cooperate with the conductor housing 21 to form the sensing capacitor, improving detection sensitivity and enhancing the user experience.

[0096] In some embodiments, the second conductor pad 53 may be a flexible conductor pad, ensuring a tight fit between the second conductor pad 53 and the conductor shell 21. In some embodiments, the second conductor pad 53 may be made of conductive foam or conductive silicone.

[0097] In other embodiments, the second conductor pad 53 may be made of a structure such as an iron pad.

[0098] Example 3

[0099] like Figure 7 As shown, this embodiment provides a method for waking up an electric toothbrush, which can be applied to the electric toothbrush provided in this embodiment. The electric toothbrush wake-up method may include:

[0100] S100, obtain the capacitance value sensed by the conductor shell 21.

[0101] Specifically, the capacitance value sensed by the conductor shell 21 can be obtained in real time by the capacitance sensing chip in the capacitance sensing unit 30.

[0102] S200 determines whether the capacitance value is within the preset capacitance range.

[0103] When the capacitance value sensed by the conductor shell 21 is within a preset capacitance range, it can be determined that the user has picked up the electric toothbrush. The capacitance sensing unit 30 can send a first detection signal to the main control unit 40. After receiving the first detection signal, the main control unit 40 can put the electric toothbrush into a wake-up state and prepare for subsequent operations.

[0104] When the capacitance value sensed by the conductor shell 21 is not within the preset range, it indicates that no user's hand is near the electric toothbrush. The capacitance sensing unit 30 can send a second detection signal to the main control unit 40. When the main control unit 40 receives the second detection signal, it switches the electric toothbrush to sleep mode.

[0105] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0106] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A toothbrush handle, characterized in that, It includes a main housing, a motor unit, a capacitive sensing unit, and a main control unit, wherein the motor unit, the capacitive sensing unit, and the main control unit are all installed in the main housing; The main housing includes a handheld area; The motor unit includes a conductor shell, which is opposite to the handheld area; The input terminal of the capacitance sensing unit is connected to the conductor shell and detects the induced capacitance obtained by the conductor shell; the output terminal of the capacitance sensing unit is connected to the main control unit. The toothbrush handle also includes a first conductor pad and a sensor plate; The input terminal is electrically connected to the induction disk; One side surface of the first conductor pad is in contact with the induction disk, and the other side surface of the first conductor pad is in contact with the conductor shell.

2. The toothbrush handle according to claim 1, characterized in that, The conductor shell includes a contact area and a sensing area; The contact area is in contact with the surface of the first conductor pad away from the induction disk; The sensing area is opposite to the handheld area.

3. The toothbrush handle according to claim 2, characterized in that, The first conductor pad is made of conductive foam or conductive silicone.

4. The toothbrush handle according to claim 2, characterized in that, The contact area has a planar structure.

5. The toothbrush handle according to claim 2, characterized in that, The toothbrush handle also includes a second conductor pad, which is disposed around the periphery of the conductor shell and at least in contact with the sensing area; The second conductor pad extends from the side of the conductor shell toward the main shell.

6. The toothbrush handle according to claim 5, characterized in that, The second conductor pad is a flexible conductor pad, and the side surface of the second conductor pad away from the conductor shell is in contact with the main shell.

7. An electric toothbrush, characterized in that, Includes the toothbrush handle as described in any one of claims 1 to 6.

8. A method for waking up an electric toothbrush, characterized in that, The electric toothbrush used in claim 7, wherein the electric toothbrush wake-up method comprises: Obtain the capacitance value induced by the conductor shell; The capacitance value is determined to be within a preset capacitance range. When the capacitance value is within the preset capacitance range, the capacitance sensing unit outputs a first detection signal and triggers the electric toothbrush to enter a wake-up state.

9. The electric toothbrush wake-up method according to claim 8, characterized in that, The electric toothbrush wake-up method also includes: When the capacitance value is not within the preset capacitance range, the capacitance sensing unit outputs a second detection signal and triggers the electric toothbrush to enter a sleep state.

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