Electric toothbrush

Abstract

The embodiment of the utility model provides an electric toothbrush. The electric toothbrush comprises a handle shell, a machine core and a detection assembly. The movement is arranged in the handle shell and comprises a mounting support and a motor, the motor is arranged on the mounting support, and at least part of an output shaft of the motor penetrates through the handle shell and can rotate by any angle relative to the handle shell. One part of the structure of the detection assembly is arranged on the output shaft, the other part of the structure of the detection assembly is arranged on the movement and / or the handle shell, and the detection assembly is used for detecting the pressure borne by the output shaft. And a part of structure, arranged on the output shaft, of the detection assembly is in non-contact fit or sliding electric contact fit with a part of structure arranged on the movement and / or the handle shell. According to the electric toothbrush provided by the embodiment of the invention, the problem of wire twisting cannot occur in the rotating process of the output shaft relative to the handle shell, so that the working stability and reliability of the electric toothbrush can be ensured.

Description

Technical Field

[0001] This application relates to the technical field of oral care, and particularly to an electric toothbrush. Background Art

[0002] An electric toothbrush is an electronic device used for cleaning the oral cavity. In related technologies, an electric toothbrush includes a brush handle and a toothbrush head. The brush handle includes a handle shell and a movement disposed in the handle shell. The rotor of the motor in the movement can rotate 360° relative to the stator of the motor. The rotor has an output shaft, and the output shaft is connected to the toothbrush head and can drive the toothbrush head to vibrate to clean teeth. Generally, the electric toothbrush further includes an electronic pressure sensor. The electronic pressure sensor is disposed on the output shaft, and obtains the brushing pressure by detecting the deformation amount of the output shaft. The electronic pressure sensor is fixedly connected to the output shaft and is electrically connected to the circuit board in the handle shell through a wire. However, since the rotor can rotate 360° relative to the stator, the wire is prone to be twisted, that is, the wire is easily wound around the output shaft, affecting the normal operation of the electric toothbrush. Summary of the Utility Model

[0003] In view of the above problems, this application provides an electric toothbrush that can avoid the problem of wire twisting when the rotor rotates 360° relative to the stator.

[0004] The electric toothbrush according to an embodiment of this application includes a handle shell, a movement, and a detection component. The movement is disposed in the handle shell. The movement includes a mounting bracket and a motor. The motor is disposed on the mounting bracket. At least a part of the output shaft of the motor passes through the handle shell and can rotate at any angle relative to the handle shell. A part of the structure of the detection component is disposed on the output shaft, and another part of the structure is disposed on the movement and / or the handle shell. The detection component is used to detect the pressure received by the output shaft. During the process that the output shaft rotates at any angle relative to the handle shell, the part of the structure of the detection component disposed on the output shaft is in non-contact cooperation or sliding electrical contact cooperation with the part of the structure disposed on the movement and / or the handle shell.

[0005] In the electric toothbrush according to an embodiment of this application, during the process that the output shaft rotates at any angle relative to the handle shell, the part of the structure of the detection component disposed on the output shaft is in non-contact cooperation or sliding electrical contact cooperation with the part of the structure disposed on the movement and / or the handle shell, that is, the part of the structure of the detection component disposed on the output shaft can maintain a non-contact state or a state of relative sliding and electrical connection with the part of the structure disposed on the movement and / or the handle shell. Thus, compared with the electric toothbrush in related technologies, no wire twisting problem will occur during the rotation of the output shaft relative to the handle shell, thereby ensuring the stability and reliability of the operation of the electric toothbrush.

[0006] In some embodiments, the detection component includes a first detection member and a second detection member. The first detection member is a non-electric component, which is disposed on the output shaft. The second detection member is disposed on the movement or the handle housing. The second detection member cooperates with the first detection member to obtain the pressure applied to the output shaft by detecting the deformation amount of the output shaft under pressure.

[0007] Wherein, since the first detection member is a non-electric component, that is, the first detection member is a component that does not require power-on, and does not require electric energy conversion and transmission. Thus, the first detection member and the second detection member can achieve non-contact cooperation. Therefore, there will be no problem of wire twisting during the rotation of the output shaft relative to the handle housing, thereby ensuring the stability and reliability of the operation of the electric toothbrush.

[0008] In some embodiments, the first detection member is a reflecting member, and the second detection member includes a transmitter and a receiver. The transmitter is used to emit energy towards the first detection member, and the receiver is used to receive the energy reflected back by the first detection member to determine the deformation amount of the output shaft under pressure according to the change in the received energy.

[0009] In some embodiments, the detection component further includes a third detection member. Both the first detection member and the third detection member are reflecting members. The third detection member is disposed on the output shaft, the movement or the handle housing. The second detection member includes a transmitter and a receiver. The transmitter is used to emit energy towards the first detection member, and the receiver is used to receive the energy reflected back by the first detection member and then by the third detection member in sequence to determine the deformation amount of the output shaft under pressure according to the change in the received energy.

[0010] Wherein, the third detection member can reflect the energy reflected by the first detection member. Compared with the case where the third detection member is not provided, the change amount of the energy received by the receiver is larger, so that the deformation amount of the output shaft under pressure can be more accurately reflected, improving the detection accuracy of the detection component.

[0011] In some embodiments, the transmitter is a light emitting unit, and the receiver is a light receiving unit. The light emitting unit is used to emit light, and the light receiving unit is used to receive the reflected light and determine the deformation amount of the output shaft under pressure according to the change in the received light.

[0012] In some embodiments, the transmitter is a sound wave emitting unit, and the receiver is a sound wave receiving unit. The sound wave emitting unit is used to emit sound waves, and the sound wave receiving unit is used to receive the reflected sound waves and determine the deformation amount of the output shaft under pressure according to the change in the received sound waves.

[0013] In some embodiments, the second detecting member further includes a body, on which both the transmitter and the receiver are disposed, and the transmitter and the receiver are spaced apart in a direction parallel to the axis of the output shaft. Thus, compared with the case where the transmitter and the receiver are separately disposed, the integration degree of the second detecting member is higher, so that on the one hand, the assembly of the second detecting member can be facilitated, and the assembly efficiency of the detecting assembly can be improved; on the other hand, the size of the second detecting member can be reduced, which is beneficial to the miniaturization of the detecting assembly.

[0014] In some embodiments, the second detecting member further includes a body, on which both the transmitter and the receiver are disposed, and the transmitter and the receiver are spaced apart in a direction parallel to the radial direction of the output shaft. Thus, compared with the case where the transmitter and the receiver are separately disposed, the integration degree of the second detecting member is higher, so that on the one hand, the assembly of the second detecting member can be facilitated, and the assembly efficiency of the detecting assembly can be improved; on the other hand, the size of the second detecting member can be reduced, which is beneficial to the miniaturization of the detecting assembly.

[0015] In some embodiments, in the radial direction of the output shaft, the distance between the receiver and the output shaft is greater than the distance between the receiver and the inner wall of the handle housing. Thus, compared with the case where in the radial direction of the output shaft, the distance between the receiver and the output shaft is less than or equal to the distance between the receiver and the inner wall of the handle housing, the change amount of the energy received by the receiver is larger, so that the deformation amount of the output shaft under pressure can be more accurately reflected, and the detection accuracy of the detecting assembly can be improved.

[0016] In some embodiments, the first detecting member and the second detecting member are spaced opposite to each other in the radial direction of the output shaft; or, the first detecting member and the second detecting member are spaced opposite to each other in the axial direction of the output shaft. Thus, the setting positions of the first detecting member and the second detecting member can be adaptively adjusted according to different specifications of the electric toothbrush, so that the applicability of the detecting assembly can be improved.

[0017] In some embodiments, the first detecting member is a non-electric first inductance element, and the second detecting member is an electric second inductance element, and the second inductance element is used to detect the inductance of the first inductance element and determine the deformation amount of the output shaft under pressure according to the change of the inductance.

[0018] Wherein, since the first detecting member is a non-electric first inductance element, non-contact cooperation can be achieved between the first detecting member and the second detecting member. Thus, there will be no problem of wire twisting during the rotation of the output shaft relative to the handle housing, so that the stability and reliability of the operation of the electric toothbrush can be ensured.

[0019] In some embodiments, the detection component includes a fourth detection member, a first conductive member, and a second conductive member. The fourth detection member and the first conductive member are electrically connected and are both disposed on the output shaft. The fourth detection member and the first conductive member can rotate following the output shaft. The second conductive member is provided with an electricity connection portion, and the first conductive member is electrically connected to the electricity connection portion. The contact position between the first conductive member and the electricity connection portion changes synchronously with the rotation of the output shaft, so that the first conductive member and the second conductive member are always kept electrically connected.

[0020] Among them, the contact position between the first conductive member and the electricity connection portion changes synchronously with the rotation of the output shaft, so that the first conductive member and the second conductive member are always kept electrically connected. That is, the first conductive member and the electricity connection portion are in sliding electrical contact and cooperation. Compared with the case where the first conductive member is fixedly connected to the electricity connection portion, there will be no problem of wire twisting during the rotation of the output shaft relative to the handle housing in this embodiment, thereby ensuring the stability and reliability of the operation of the electric toothbrush.

[0021] In some embodiments, the second conductive member is provided with a guiding groove, and at least a part of the electricity connection portion is disposed in the guiding groove.

[0022] Among them, the provision of the guiding groove can, on the one hand, provide an accommodation space for the electricity connection portion, reduce the possibility of the user directly contacting the electricity connection portion, and improve the safety performance; on the other hand, it can provide guidance for the movement of the first conductive member relative to the second conductive member, and improve the stability of the sliding electrical contact and cooperation between the first conductive member and the second conductive member.

[0023] In some embodiments, the output shaft is provided with a notch that recesses from the outer peripheral wall of the output shaft towards the central axis of the output shaft, and the partial structure disposed on the output shaft is located in the notch.

[0024] Among them, the provision of the notch can, on the one hand, provide positioning for the installation of the first structure, improve the assembly efficiency of the detection component; on the other hand, it can reduce the possibility of interference between the first structure and other structures of the electric toothbrush, and ensure the normal operation of the detection component; on the third hand, it can reduce the space size occupied by the first structure and the output shaft together, thus facilitating the miniaturization design of the electric toothbrush.

[0025] In addition, the provision of the notch can also facilitate the deformation of the output shaft when it is pressed. In this way, when the first structure is disposed at the notch, the position change degree of the first structure is relatively large, so that the deformation amount of the output shaft when it is pressed can be more accurately reflected, and the detection accuracy of the detection component is improved.

[0026] In some embodiments, the output shaft includes opposite first and second ends, and the first end of the output shaft passes through the handle housing and is located outside the handle housing. The electric toothbrush further includes a seal, which is disposed on the output shaft and closer to the first end of the output shaft than the partial structure disposed on the output shaft, and the seal is used to seal the gap between the output shaft and the handle housing.

[0027] Wherein, the seal is disposed on the output shaft and closer to the first end of the output shaft than the first structure, thereby preventing impurities such as external water or dust from entering the handle housing and affecting the first structure, and thus improving the stability and reliability of the detection component during operation.

[0028] The above description is only an overview of the technical solution of the present application. In order to be able to understand the technical means of the present application more clearly, it can be implemented in accordance with the content of the description. And in order to make the above and other objects, features and advantages of the present application more obvious and understandable, the specific embodiments of the present application are specifically exemplified below. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The above and / or additional aspects and advantages of the present application will become apparent and easier to understand from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0030] Figure 1 is a perspective structural view of an electric toothbrush according to some embodiments of the present application;

[0031] Figure 2 is Figure 1 a perspective exploded view of the electric toothbrush shown;

[0032] Figure 3 is Figure 1 a structural view of a partial structure in the electric toothbrush shown;

[0033] Figure 4 is Figure 1 a structural view of a partial structure in the electric toothbrush shown.

[0034] MAIN ELEMENT SYMBOL DESCRIPTION:

[0035] Electric toothbrush 100;

[0036] Handle housing 10;

[0037] Movement 20, mounting bracket 21, motor 23, output shaft 231, outer peripheral wall 2311, first end 2313, second end 2315;

[0038] Detection component 30, first detection piece 31, second detection piece 33, transmitter 331, receiver 333, body 335, third detection piece 35, fourth detection piece 37, first conductive piece 38, second conductive piece 39, first part 391, second part 393, power connection part 395, guide groove 397; seal 40; electric toothbrush head 50. Detailed implementation manners

[0039] The implementation manners of the present application will be described in detail below. Examples of the implementation manners are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The implementation manners described below with reference to the accompanying drawings are exemplary only for explaining the implementation manners of the present application and should not be construed as limiting the implementation manners of the present application.

[0040] In the description of the present application, it should be understood that the orientation or positional relationship indicated by terms such as "thickness", "upper", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present application. Also, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" and "second" may explicitly or implicitly include one or more features. In the description of the present application, the meaning of "a plurality" is two or more unless otherwise specifically defined.

[0041] In the description of the present application, it should be noted that unless otherwise clearly specified and defined, the terms "mounted", "connected" and "coupled" should be understood in a broad sense. In one example, it may be a fixed connection, or a detachable connection, or an integral connection; it may be a mechanical connection, or an electrical connection, or may communicate with each other; it may be directly connected, or indirectly connected through an intermediate medium, and may be the internal communication of two elements or the interaction relationship between two elements.

[0042] An electric toothbrush is an electronic device for cleaning the oral cavity. In related technologies, the electric toothbrush includes a brush handle and a toothbrush head. The brush handle includes a handle shell and a movement disposed in the handle shell. The rotor of the motor in the movement can rotate 360° relative to the stator of the motor. The rotor has an output shaft, and the output shaft is connected to the toothbrush head and can drive the toothbrush head to vibrate to clean teeth. Generally, the electric toothbrush further includes an electronic pressure sensor. The electronic pressure sensor is disposed on the output shaft and obtains the brushing pressure by detecting the deformation amount of the output shaft. The electronic pressure sensor is fixedly connected to the output shaft and is electrically connected to the circuit board in the handle shell through a wire. However, since the rotor can rotate 360° relative to the stator, the wire is prone to be twisted, that is, the wire is easily wound around the output shaft, affecting the normal operation of the electric toothbrush. To solve this problem, please refer to Figure 1 , an embodiment of the present application provides an electric toothbrush 100.

[0043] Please refer to Figure 1 and Figure 2 , the electric toothbrush 100 according to the embodiment of the present application includes a handle shell 10, a movement 20 and a detection assembly 30. The movement 20 is disposed in the handle shell 10. The movement 20 includes a mounting bracket 21 and a motor 23. The motor 23 is disposed on the mounting bracket 21. At least a part of the output shaft 231 of the motor 23 penetrates through the handle shell 10 and can rotate at any angle relative to the handle shell 10. A part of the structure of the detection assembly 30 is disposed on the output shaft 231, and another part of the structure is disposed on the movement 20 and / or the handle shell 10. The detection assembly 30 is used to detect the pressure received by the output shaft 231. During the process that the output shaft 231 rotates at any angle relative to the handle shell 10, the part of the structure of the detection assembly 30 disposed on the output shaft 231 is in non-contact cooperation or sliding electrical contact cooperation with the part of the structure disposed on the movement 20 and / or the handle shell 10.

[0044] Wherein, the handle shell 10 is a structure for loading the movement 20 and other components of the electric toothbrush 100. The handle shell 10 is generally a shell structure with a length greater than the width and diameter. The length direction of the handle shell 10 is the same as the axial direction X of the output shaft 231. On the axial direction X of the output shaft 231, one end of the handle shell 10 is provided with a through hole 11 for the output shaft 231 to extend out. The material of the handle shell 10 can be a metal material or a non-metal material. The metal materials include but are not limited to aluminum, iron, steel or aluminum alloy, etc. The non-metal materials include but are not limited to plastics, etc. In one example, the handle shell 10 can be made of a metal material, whereby the structural strength of the handle shell 10 can be higher, preventing the handle shell 10 from being damaged during the operation of the electric toothbrush 100, thereby improving the working stability and reliability of the electric toothbrush 100. In another example, the handle shell 10 can be made of a non-metal material, whereby the weight of the handle shell 10 can be lighter, which is beneficial to realize the light weight of the electric toothbrush 100.

[0045] In some embodiments, the electric toothbrush 100 may further include an electric toothbrush head 50. The electric toothbrush head 50 is connected to the output shaft 231. When the motor 23 operates stably, the motor 23 can drive the electric toothbrush head 50 to vibrate at a high frequency through the output shaft 231. In this way, the electric toothbrush 100 can clean the parts to be cleaned in the oral cavity through the high-frequency vibrating electric toothbrush head 50. Among them, the output shaft 231 of the motor 23 and the electric toothbrush head 50 can be connected in a detachable connection manner. On the one hand, this can facilitate the replacement of electric toothbrush heads 50 of different models or different materials; on the other hand, when the service life of the electric toothbrush head 50 is long enough to cause a decline in the cleaning effect, it is convenient to replace the new electric toothbrush head 50, so as to ensure the cleaning effect of the electric toothbrush 100. It should be noted that, in some embodiments, the motor 23 includes but is not limited to a linear motor, a rotary motor, a bidirectional motor, etc.

[0046] The mounting bracket 21 is used to load the motor 23 and other components of the electric toothbrush 100 (such as a battery, etc.). The material of the mounting bracket 21 is a metal material or a non-metal material. Among them, the metal materials include but are not limited to aluminum, iron, steel, aluminum alloy, etc., and the non-metal materials include but are not limited to plastics, etc. In one example, the mounting bracket 21 can be made of a combination of metal materials and non-metal materials, so that the structural strength of the mounting bracket 21 can be higher, preventing the mounting bracket 21 from being damaged during the operation of the electric toothbrush 100, and improving the stability and reliability of the operation of the electric toothbrush 100. In another example, the mounting bracket 21 can be made of a non-metal material, so that the weight of the mounting bracket 21 can be lighter, which is beneficial to the lightweight of the electric toothbrush 100.

[0047] Please combine Figure 3 and Figure 4 , the detection component 30 is a device for detecting the pressure received by the output shaft 231 when the electric toothbrush 100 performs a brushing operation. Specifically, a part of the structure of the detection component 30 is arranged on the output shaft 231, and another part of the structure is arranged on the movement 20 and / or the handle housing 10. In this way, the part of the structure (hereinafter referred to as the first structure) of the detection component 30 arranged on the output shaft 231 and the part of the structure (hereinafter referred to as the second structure) arranged on the movement 20 (the mounting bracket 21 of the movement 20) and / or the handle housing 10 can cooperate to detect the pressure received by the output shaft 231. It should be noted that, in some embodiments, the pressure received by the output shaft 231 may be: the acting force generated on the output shaft 231 when the electric toothbrush head 50 is stressed; or, the acting force directly applied by the user to the output shaft 231. Among them, the pressure received by the electric toothbrush head 50 may be: the mutual acting force between the electric toothbrush head 50 and the part to be cleaned when the electric toothbrush head 50 cleans the part to be cleaned; or, the acting force directly applied by the user to the electric toothbrush head 50.

[0048] In some embodiments, the electric toothbrush 100 further includes a circuit board disposed within the handle housing 10. The second structure and the circuit board can be electrically connected by components such as wires, copper bars, or elastic pieces. When the detection assembly 30 detects that the pressure on the output shaft 231 is too high, the circuit board can control the electric toothbrush 100 to issue a prompt message or control the electric toothbrush 100 to stop working according to the detection result of the detection assembly 30. In this way, on the one hand, it can prevent the electric toothbrush 100 from damaging the oral cavity and ensure the oral health of the user; on the other hand, it can prevent the electric toothbrush 100 from being damaged and extend the service life of the electric toothbrush 100. It should be noted that in some embodiments, during the process of the output shaft 231 rotating at any angle relative to the handle housing 10, the detection assembly 30 can output the detection result to the circuit board.

[0049] If the first structure and the second structure are electrically connected by a wire, that is, the first end of the wire is fixedly connected to the first structure, and the second end of the wire (opposite to the first end of the wire) is fixedly connected to the second structure, then during the process of the first structure rotating relative to the handle housing 10 together with the output shaft 231, the first end of the wire rotates together with the first structure, and the second end of the wire is fixed relative to the handle housing 10. Therefore, the wire will be wound around the output shaft 231, which may not only cause the electrical connection between the wire and the first structure and / or the second structure to be disconnected, affecting the normal operation of the detection assembly, but also cause the output shaft 231 to be unable to continue rotating, affecting the normal operation of the electric toothbrush 100.

[0050] In some embodiments of the present application, the first structure and the second structure are in non-contact cooperation, that is, the first structure and the second structure do not rely on physical contact to achieve cooperation. In other words, the first structure and the second structure can achieve interaction through wireless, inductive, or other non-physical contact methods. Thus, compared with the electrical connection between the first structure and the second structure by a wire, no wire twisting problem will occur during the process of the output shaft 231 rotating at any angle relative to the handle housing 10, thereby ensuring the stability and reliability of the operation of the electric toothbrush 100.

[0051] The first structure and the second structure are in sliding electrical contact cooperation, that is, the first structure and the second structure maintain contact during sliding (including translation and rotation, etc.) and can achieve signal and current transmission. In other words, the first structure and the second structure are in dynamic contact during sliding to achieve signal and current transmission. Thus, compared with the electrical connection between the first structure and the second structure by a wire, no wire twisting problem will occur during the process of the output shaft 231 rotating at any angle relative to the handle housing 10, thereby ensuring the stability and reliability of the operation of the electric toothbrush 100.

[0052] It should be noted that in the above embodiments, the output shaft 231 can rotate relative to the handle housing 10 by any angle, which can be: the output shaft 231 can rotate relative to the handle housing 10 by 10°, 30°, 50°, 70°, 180°, 360°, 540°, 720°, 1080° and any other angles.

[0053] In the electric toothbrush 100 according to the embodiment of the present application, during the process of the output shaft 231 rotating relative to the handle housing 10 by any angle, a partial structure of the detection assembly 30 disposed on the output shaft 231 is in non-contact cooperation or sliding electrical contact cooperation with a partial structure disposed on the movement 20 and / or the handle housing 10, that is, a partial structure of the detection assembly 30 disposed on the output shaft 231 can maintain a non-contact state or a state of relative sliding and electrical connection with a partial structure disposed on the movement 20 and / or the handle housing 10. Thus, compared with the electric toothbrush in the related art, no wire twisting problem will occur during the rotation of the output shaft 231 relative to the handle housing 10, thereby ensuring the stability and reliability of the operation of the electric toothbrush 100.

[0054] The electric toothbrush 100 will be further described below with reference to the accompanying drawings.

[0055] Please refer to Figure 2 and Figure 3 , in some embodiments, the detection assembly 30 includes a first detection member 31 and a second detection member 33. The first detection member 31 is a non-electrical component. The first detection member 31 is disposed on the output shaft 231, and the second detection member 33 is disposed on the movement 20 or the handle housing 10. The second detection member 33 cooperates with the first detection member 31 to obtain the pressure received by the output shaft 231 by detecting the deformation amount of the output shaft 231 under pressure. It can be understood that in this embodiment, the first structure includes the first detection member 31, and the second structure includes the second detection member 33.

[0056] Specifically, in some embodiments, when the output shaft 231 is compressed and deformed, the position of the first detector 31 will change with the deformation of the output shaft 231. Thus, the second detector 33 cooperates with the first detector 31 to detect the deformation amount of the output shaft 231 under compression, and obtain the pressure value received by the output shaft 231 through the deformation amount of the output shaft 231 under compression. It should be noted that, in some embodiments, the first detector 31 is a non-electricity component, that is, the first detector 31 is a component that does not require power supply, and does not require electric energy conversion and transmission. Thus, the first detector 31 and the second detector 33 can achieve non-contact cooperation. Among them, the first detector 31 can be an optical element, a magnetic element or a metal, etc. Optical elements include but are not limited to prisms and mirrors, etc., and magnetic elements include but are not limited to magnets and magnetic cores, etc. The second detector 33 is an electric component, and the second detector 33 can cooperate with the first detector 31. Among them, the second detector 33 can be an electromagnetic sensor (such as a Hall sensor, etc.), an optoelectronic sensor or an acoustic wave sensor, etc.

[0057] In some embodiments, the first detector 31 and the second detector 33 are spaced relative to each other in the axial direction X of the output shaft 231; or, the first detector 31 and the second detector 33 are spaced relative to each other in the radial direction of the output shaft 231 (the direction perpendicular to the axial direction X). Thus, the installation positions of the first detector 31 and the second detector 33 can be adaptively adjusted according to the different specifications of the electric toothbrush 100, thereby improving the applicability of the detection assembly 30.

[0058] In some embodiments, the first detector 31 and the output shaft 231 are combined together by an irreversible connection method, and the irreversible connection method includes but is not limited to bonding or welding, etc. Thus, the connection stability between the first detector 31 and the output shaft 231 can be improved, preventing the first detector 31 from loosening or falling off the output shaft 231 during the movement of the motor 23. Thus, on the one hand, the cooperation stability between the first detector 31 and the second detector 33 can be ensured, ensuring the normal operation of the detection assembly 30; on the other hand, it can prevent the first detector 31 from falling off the output shaft 231 and affecting the normal operation of the motor 23, improving the working stability and reliability of the motor 23. In other embodiments, the first detector 31 and the output shaft 231 are combined together by a detachable connection method, and the detachable connection method includes but is not limited to snap connection or screw connection, etc.

[0059] In some embodiments, the second detection member 33 and the movement 20 or the handle housing 10 are combined together by a non-detachable connection method, and the non-detachable connection method includes but is not limited to bonding or welding, etc. In other embodiments, the second detection member 33 and the movement 20 or the handle housing 10 are combined together by a detachable connection method, and the detachable connection method includes but is not limited to snap connection or threaded connection, etc.

[0060] Further, please continue to refer to Figure 2 and Figure 3 , in some embodiments, the first detection member 31 is a reflector, and the second detection member 33 includes a transmitter 331 and a receiver 333. The transmitter 331 is configured to emit energy towards the first detection member 31, and the receiver 333 is configured to receive the energy reflected back by the first detection member 31, so as to determine the deformation amount of the output shaft 231 deformed under pressure according to the change of the received energy.

[0061] Specifically, in certain embodiments, when the second detection member 33 is powered on, the transmitter 331 can emit energy towards the first detection member 31, and the receiver 333 can receive the energy reflected back by the first detection member 31, and determine the deformation amount of the output shaft 231 deformed under pressure according to the change of the received energy (such as energy intensity change or receiving position change, etc.). Exemplarily, when the output shaft 231 is deformed under pressure, the position of the first detection member 31 will change with the deformation of the output shaft 231. At this time, the angle of the energy reflected by the first detection member 31 will shift. Thus, the position of the energy received by the receiver 333 will also shift, and the receiver 333 can determine the deformation amount of the output shaft 231 deformed under pressure according to the position offset amount. It can be understood that when the first detection member 31 rotates relative to the handle housing 10 together with the output shaft 231, the first detection member 31 can always reflect the energy emitted by the transmitter 331 back to the receiver 333, thereby ensuring the stability and reliability of the detection assembly 30.

[0062] Please refer to Figure 3 , in other embodiments, the detection assembly 30 further includes a third detection member 35. Both the first detection member 31 and the third detection member 35 are reflectors. The third detection member 35 is disposed on the output shaft 231, the movement 20 or the handle housing 10. The second detection member 33 includes a transmitter 331 and a receiver 333. The transmitter 331 is configured to emit energy towards the first detection member 31, and the receiver 333 is configured to receive the energy reflected back by the first detection member 31 and the third detection member 35 in sequence, so as to determine the deformation amount of the output shaft 231 deformed under pressure according to the change of the received energy.

[0063] Specifically, in some embodiments, when the second detector 33 is powered on, the transmitter 331 can emit energy towards the first detector 31, and the receiver 333 can receive the energy reflected back by the first detector 31 and the third detector 35 in sequence, and determine the deformation amount of the output shaft 231 under pressure deformation according to the change in the received energy (such as energy intensity change or reception position change, etc.). It can be understood that, in some embodiments, the third detector 35 can be disposed on the propagation path of the energy between the first detector 31 and the receiver 333. In this way, the third detector 35 can reflect the energy reflected by the first detector 31. Compared with the case where the third detector 35 is not provided, the change amount of the energy received by the receiver 333 is larger, so that the deformation amount of the output shaft 231 under pressure deformation can be more accurately reflected, and the detection accuracy of the detection component 30 is improved.

[0064] In one example, the first detector 31 and the third detector 35 are exactly the same, that is, the structures, materials, dimensions, etc. of the first detector 31 and the third detector 35 are exactly the same. In another example, the first detector 31 and the third detector 35 are different, that is, at least one of the structures, materials, dimensions, etc. of the first detector 31 and the third detector 35 is different.

[0065] Furthermore, in some embodiments, the transmitter 331 is a light emitting unit, and the receiver 333 is a light receiving unit. The light emitting unit is used to emit light, and the light receiving unit is used to receive the reflected light and determine the deformation amount of the output shaft 231 under pressure deformation according to the change in the received light. It should be noted that, in some embodiments, the transmitter 331 includes but is not limited to a laser emitting unit or an infrared light emitting unit, etc., and the receiver 333 includes but is not limited to a laser receiving unit or an infrared light receiving unit, etc. The reflector can be an element such as a reflector that can reflect the light emitted by the transmitter 331.

[0066] Specifically, in some embodiments, when the detection component 30 only includes the first detector 31 and the second detector 33, when the transmitter 331 emits light towards the first detector 31, the receiver 333 can receive the light reflected back by the first detector 31 and determine the deformation amount of the output shaft 231 under pressure deformation according to the change in the received light (such as intensity change or reception position change, etc.).

[0067] In some other embodiments, when the detection component 30 includes the first detection member 31, the second detection member 33, and the third detection member 35, when the emitter 331 emits light toward the first detection member 31, the receiver 333 can receive the light reflected back by the first detection member 31 and the third detection member 35 in sequence, and determine the deformation amount of the output shaft 231 under pressure deformation according to the change of the received light (such as intensity change or receiving position change, etc.). Among them, the setting of the third detection member 35 can increase the offset amount of the light, so as to more accurately reflect the deformation amount of the output shaft 231 under pressure deformation, and improve the detection accuracy of the detection component 30.

[0068] In some other embodiments, the emitter 331 is a sound wave emitting unit, the receiver 333 is a sound wave receiving unit, the sound wave emitting unit is used to emit sound waves, the sound wave receiving unit is used to receive the reflected sound waves, and determine the deformation amount of the output shaft 231 under pressure deformation according to the change of the received sound waves. It should be noted that in some embodiments, the emitter 331 can be an ultrasonic wave emitting unit, etc., the receiver 333 can be an ultrasonic wave receiving unit, etc., and the reflector can be an element such as metal that can reflect the sound waves emitted by the emitter 331.

[0069] Specifically, in some embodiments, when the detection component 30 only includes the first detection member 31 and the second detection member 33, when the emitter 331 emits sound waves toward the first detection member 31, the receiver 333 can receive the sound waves reflected back by the first detection member 31, and determine the deformation amount of the output shaft 231 under pressure deformation according to the change of the received sound waves (such as intensity change, receiving position change, etc.).

[0070] In some other embodiments, when the detection component 30 includes the first detection member 31, the second detection member 33, and the third detection member 35, when the emitter 331 emits sound waves toward the first detection member 31, the receiver 333 can receive the sound waves reflected back by the first detection member 31 and the third detection member 35 in sequence, and determine the deformation amount of the output shaft 231 under pressure deformation according to the change of the received sound waves (such as intensity change or receiving position change, etc.). Among them, the setting of the third detection member 35 can increase the change amount of the sound waves, so as to more accurately reflect the deformation amount of the output shaft 231 under pressure deformation, and improve the detection accuracy of the detection component 30.

[0071] Please refer to Figure 3 , in some embodiments, the second detection member 33 further includes a body 335, and both the emitter 331 and the receiver 333 are arranged on the body 335. Thus, compared with the separate arrangement of the emitter 331 and the receiver 333, the integration degree of the second detection member 33 is higher. On the one hand, it is convenient for the assembly of the second detection member 33 and improves the assembly efficiency of the detection component 30; on the other hand, it can reduce the size of the second detection member 33, which is beneficial to the miniaturization of the detection component.

[0072] In some embodiments, the transmitter 331 and the receiver 333 are spaced apart in a direction parallel to the axis of the output shaft 231; alternatively, the transmitter 331 and the receiver 333 are spaced apart in a direction parallel to the radial direction of the output shaft 231. Thus, the transmitter 331 and the receiver 333 can be adaptively adjusted according to the installation space and the specifications of the first detecting member 31, thereby improving the applicability of the second detecting member 33.

[0073] In some embodiments, a detachable connection method can be adopted between the transmitter 331 and the body 335, and between the receiver 333 and the body 335. The detachable connection methods include but are not limited to snap connection or threaded connection, etc. In other embodiments, a non-detachable connection method can be adopted between the transmitter 331 and the body 335, and between the receiver 333 and the body 335. The non-detachable connection methods include but are not limited to bonding or welding, etc.

[0074] Please refer to Figure 2 and Figure 3 , in some embodiments, in the radial direction of the output shaft 231, the distance between the receiver 333 and the output shaft 231 is greater than the distance between the receiver 333 and the inner wall of the handle housing 10. Thus, compared with the situation where in the radial direction of the output shaft 231, the distance between the receiver 333 and the output shaft 231 is less than or equal to the distance between the receiver 333 and the inner wall of the handle housing 10, the change amount of the energy received by the receiver 333 is greater, so that the deformation amount of the output shaft 231 under pressure can be more accurately reflected, and the detection accuracy of the detection assembly 30 is improved.

[0075] Please refer to Figure 3 , in some embodiments, the first detecting member 31 is a non-electrical first inductance element, and the second detecting member 33 is an electrical second inductance element. The second inductance element is used to detect the inductance of the first inductance element and determine the deformation amount of the output shaft 231 under pressure according to the change of the inductance.

[0076] Specifically, in some embodiments, when the second detecting member 33 is energized, the second detecting member 33 can detect the inductance of the first detecting member 31. Since the position of the first detecting member 31 will change with the deformation of the output shaft 231 when the output shaft 231 is deformed under pressure, the inductance of the first detecting member 31 will also change. Thus, the second detecting member 33 can determine the deformation amount of the output shaft 231 under pressure according to the change of the inductance (such as intensity change, etc.). Among them, since the first detecting member 31 is a non-electrical first inductance element, a non-contact cooperation can be achieved between the first detecting member 31 and the second detecting member 33.

[0077] Please refer toFigure 2 and Figure 4 , in some embodiments, the detection component 30 includes a fourth detection member 37, a first conductive member 38, and a second conductive member 39. The fourth detection member 37 and the first conductive member 38 are electrically connected and are both disposed on the output shaft 231. The fourth detection member 37 and the first conductive member 38 can rotate following the output shaft 231. The second conductive member 39 is provided with an electricity connection portion 395. The first conductive member 38 is electrically connected to the electricity connection portion 395. The contact position between the first conductive member 38 and the electricity connection portion 395 changes synchronously following the rotation of the output shaft 231, so that the first conductive member 38 and the second conductive member 39 are always kept electrically connected. It can be understood that, in this embodiment, the first structure includes the fourth detection member 37 and the first conductive member 38, and the second structure includes at least a part of the second conductive member 39.

[0078] Specifically, in some embodiments, the first conductive member 38 is electrically connected to the fourth detection member 37, and the first conductive member 38 can also be electrically connected to the electricity connection portion 395 of the second conductive member 39. In this way, the transmission of electric energy and data can be realized, that is, electric energy can be transmitted to the fourth detection member 37 through the second conductive member 39 and the first conductive member 38 for the normal operation of the fourth detection member 37; the detection data of the fourth detection member 37 can be output to the circuit board or other structures of the electric toothbrush 100 through the first conductive member 38 and the second conductive member 39. In addition, the contact position between the first conductive member 38 and the electricity connection portion 395 changes synchronously following the rotation of the output shaft 231, so that the first conductive member 38 and the second conductive member 39 are always kept electrically connected, that is, the first conductive member 38 and the electricity connection portion 395 are in a sliding electrical contact fit. Compared with the case where the first conductive member 38 is fixedly connected to the electricity connection portion 395, no wire twisting problem will occur during the relative rotation of the output shaft 231 with respect to the handle housing 10 in this embodiment, thereby ensuring the stability and reliability of the operation of the electric toothbrush 100. It should be noted that, in some embodiments, the fourth detection member 37 can be a pressure sensor or the like.

[0079] In some embodiments, the second conductive member 39 is disposed on the movement 20 or the handle housing 10. In this way, when the output shaft 231 rotates relative to the handle housing 10, the second conductive member 39 is fixed relative to the handle housing 10. In other embodiments, the second conductive member 39 includes a first portion 391 and a second portion 393, and the first portion 391 and the second portion 393 can rotate relative to each other. Specifically, the first portion 391 can be disposed on the output shaft 231, and the second portion 393 can be disposed on the movement 20 or the handle housing 10. When the output shaft 231 rotates relative to the handle housing 10, the first portion 391 rotates relative to the handle housing 10 and the second portion 393 together with the output shaft 231, and the second portion 393 is fixed relative to the handle housing 10. It should be noted that, in some embodiments, the second conductive member 39 can be a conductive slip ring.

[0080] Further, in some embodiments, a guiding groove 397 is provided on the second conductive member 39, and at least a part of the power connection portion 395 is disposed in the guiding groove 397.

[0081] Specifically, in some embodiments, the guiding groove 397 may be recessed from the side of the second conductive member 39 facing the first conductive member 38 ( Figure 4 the upper side of the second conductive member 39 in the figure) in a direction away from the first conductive member 38, and at least a part of the power connection portion 395 is disposed in the guiding groove 397. In this way, on the one hand, the setting of the guiding groove 397 can provide an accommodation space for the power connection portion 395, reduce the possibility of the user directly contacting the power connection portion 395, and improve the safety performance; on the other hand, it can guide the movement of the first conductive member 38 relative to the second conductive member 39, and improve the stability of the sliding electrical contact fit between the first conductive member 38 and the second conductive member 39.

[0082] In some embodiments, a notch is provided on the output shaft 231. The notch is recessed from the outer peripheral wall 2311 of the output shaft 231 toward the central axis of the output shaft 231, and a part of the structure (i.e., the first structure) disposed on the output shaft 231 is located in the notch. Among them, the setting of the notch can, on the one hand, provide positioning for the installation of the first structure and improve the assembly efficiency of the detection component 30; on the other hand, it can reduce the possibility of interference between the first structure and other structures of the electric toothbrush 100 and ensure the normal operation of the detection component 30; on the third hand, it can reduce the space size occupied by the first structure and the output shaft 231 together, which is beneficial to the miniaturized design of the electric toothbrush 100.

[0083] In addition, the setting of the notch can also facilitate the deformation of the output shaft 231 when it is pressed. In this way, when the first structure is disposed at the notch, the position change degree of the first structure is relatively large, so that the deformation amount of the output shaft 231 when it is pressed can be more accurately reflected, and the detection accuracy of the detection component 30 is improved.

[0084] Please refer to Figure 2 , in some embodiments, the output shaft 231 includes opposite first end 2313 and second end 2315. The first end 2313 of the output shaft 231 passes through the handle housing 10 and is located outside the handle housing 10. The electric toothbrush 100 further includes a seal 40. The seal 40 is disposed on the output shaft 231 and is closer to the first end 2313 of the output shaft 231 than the part of the structure (the first structure) disposed on the output shaft 231. The seal 40 is used to seal the gap between the output shaft 231 and the handle housing 10.

[0085] Among them, the seal 40 is a flexible structure for sealing the gap between the output shaft 231 and the handle housing 10 to prevent impurities such as external water or dust from entering the interior of the handle housing 10. The material of the seal 40 includes but is not limited to silicone, polyurethane, rubber, or plastic, etc. In some embodiments of the present application, the seal 40 is disposed on the output shaft 231 and is closer to the first end 2313 of the output shaft 231 than the first structure, thereby preventing external water or dust and other impurities from entering the handle housing 10 and affecting the first structure, thus improving the stability and reliability of the detection component 30 during operation. Exemplarily, when the first structure includes a first detection member 31 and the first detection member 31 is a reflector, the arrangement of the seal 40 can prevent external water or dust and other impurities from contacting the first detection member 31, resulting in the first detection member 31 being unable to effectively reflect energy.

[0086] In the description of this specification, the descriptions with reference to terms such as "certain embodiments", "in an example", "exemplarily", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiments or examples are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0087] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present application. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present application.

Claims

1. An electric toothbrush, characterized in that: include: Handle shell; A movement, the movement is arranged in the handle shell, the movement comprises a mounting bracket and a motor, the motor is arranged in the mounting bracket, at least a part of the output shaft of the motor passes through the handle shell and can rotate at any angle relative to the handle shell; and A detection component, wherein a portion of the structure of the detection component is arranged on the output shaft, and another portion of the structure is arranged on the movement and / or the handle shell. The detection component is used to detect the pressure applied to the output shaft. During the process of the output shaft rotating at any angle relative to the handle shell, the portion of the structure of the detection component arranged on the output shaft is non-contactly matched or slidingly electrically contacted with the portion of the structure arranged on the movement and / or the handle shell.

2. The electric toothbrush according to claim 1, characterized in that: The detection component includes a first detection member and a second detection member, the first detection member is a non-electrical element, the first detection member is arranged on the output shaft, the second detection member is arranged on the movement or the handle shell, and the second detection member cooperates with the first detection member to obtain the pressure on the output shaft by detecting the deformation amount of the output shaft under pressure.

3. The electric toothbrush according to claim 2, characterized in that: The first detection member is a reflective member, and the second detection member includes a transmitter and a receiver. The transmitter is used to transmit energy toward the first detection member, and the receiver is used to receive energy reflected back by the first detection member, so as to determine the deformation amount of the output shaft under compression according to the change of the received energy.

4. The electric toothbrush according to claim 2, characterized in that: The detection component also includes a third detection member, the first detection member and the third detection member are both reflective members, the third detection member is arranged on the output shaft, the movement or the handle shell, the second detection member includes a transmitter and a receiver, the transmitter is used to transmit energy toward the first detection member, and the receiver is used to receive energy reflected back by the first detection member and the third detection member in turn, so as to determine the deformation amount of the output shaft under compression according to the change of the received energy.

5. The electric toothbrush according to claim 3 or 4, characterized in that: The transmitter is a light emitting unit, and the receiver is a light receiving unit. The light emitting unit is used to emit light, and the light receiving unit is used to receive reflected light, and determine the amount of compression deformation of the output shaft according to the change of the received light; or, The transmitter is a sound wave transmitting unit, and the receiver is a sound wave receiving unit. The sound wave transmitting unit is used to transmit sound waves, and the sound wave receiving unit is used to receive reflected sound waves, and determine the deformation amount of the output shaft under compression according to the change of the received sound waves.

6. The electric toothbrush according to claim 3 or 4, characterized in that: The second detection member further comprises a body, and the transmitter and the receiver are both arranged on the body; The transmitter and the receiver are spaced apart in a direction parallel to the axis of the output shaft; or The transmitter and the receiver are spaced apart in a direction parallel to a radial direction of the output shaft.

7. The electric toothbrush according to claim 3 or 4, characterized in that: In the radial direction of the output shaft, the distance between the receiver and the output shaft is greater than the distance between the receiver and the inner wall of the handle housing.

8. The electric toothbrush according to claim 2, characterized in that: The first detection member and the second detection member are spaced apart and opposite to each other in the radial direction of the output shaft; or, The first detection member and the second detection member are spaced apart from each other in the axial direction of the output shaft.

9. The electric toothbrush according to claim 2, characterized in that: The first detection member is a non-electrical first inductance element, and the second detection member is an electrical second inductance element. The second inductance element is used to detect the inductance of the first inductance element and determine the amount of compression deformation of the output shaft according to the change of the inductance.

10. The electric toothbrush according to claim 1, characterized in that: The detection component includes a fourth detection member, a first conductive member and a second conductive member. The fourth detection member is electrically connected to the first conductive member and are both arranged on the output shaft. The fourth detection member and the first conductive member can rotate with the output shaft. The second conductive member is provided with a power connection part. The first conductive member is electrically connected to the power connection part. The contact position of the first conductive member and the power connection part changes synchronously with the rotation of the output shaft, so that the first conductive member and the second conductive member always maintain electrical connection.

11. The electric toothbrush according to claim 10, characterized in that: The second conductive member is provided with a guide groove, and at least a part of the power connection portion is arranged in the guide groove.

12. The electric toothbrush according to claim 1, characterized in that: The output shaft is provided with a notch, the notch is recessed from the outer peripheral wall of the output shaft toward the central axis of the output shaft, and the partial structure arranged on the output shaft is located in the notch.

13. The electric toothbrush according to claim 1, characterized in that: The output shaft comprises a first end and a second end opposite to each other, the first end of the output shaft passes through the handle shell and is located outside the handle shell; the electric toothbrush further comprises: A sealing member is arranged on the output shaft and is closer to the first end of the output shaft than the partial structure arranged on the output shaft, and is used for sealing the gap between the output shaft and the handle shell.

Images