Oral cleaning device and control method thereof

Abstract

The present invention discloses an oral cleaning appliance and a control method thereof. The oral cleaning appliance includes a housing, a mounting bracket, a drive assembly, a piezoelectric sensing assembly, and a main control board. The housing has a pressing portion, and a mounting cavity is defined within the housing. The mounting bracket is disposed in the mounting cavity, the drive assembly is disposed in the mounting cavity and mounted on the mounting bracket, the piezoelectric sensing assembly is disposed on a wall surface of the mounting cavity and is arranged opposite to the pressing portion. The piezoelectric sensing assembly is spaced apart from the mounting bracket and the drive assembly. When the button portion is pressed, the piezoelectric sensing assembly and the button portion deform together and generate a piezoelectric signal. The main control board is used to detect the piezoelectric signal of the piezoelectric sensing assembly and change the operating parameters of the drive assembly based on the piezoelectric signal. The oral cleaning appliance according to the present invention has good signal judgment accuracy and convenient operation.

Description

Technical Field

[0001] The present invention relates to the technical field of oral cleaning, and in particular to an oral cleaning device and a control method thereof. Background Art

[0002] As electronic personal care products, oral cleaning appliances such as electric toothbrushes are becoming increasingly popular. However, in related technologies, when using an electric toothbrush, the user presses a button on the electric toothbrush, and the electric control board recognizes the press command and performs the corresponding operation. Due to unreasonable structural design and user operation errors, erroneous commands may be generated. The electric control board cannot effectively distinguish erroneous commands, resulting in the risk of misjudgment of the electric toothbrush operation and a poor user experience. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides an oral cleaning device that has good signal judgment accuracy and convenient operation.

[0004] The present invention also provides a control method for the oral cleaning appliance.

[0005] According to the first aspect of the present invention, the oral cleaning device includes: a casing, the casing having a pressing portion, the pressing portion forming at least one button portion, and a mounting cavity defined in the casing; a mounting bracket, the mounting bracket being arranged in the mounting cavity; a driving component, the driving component being arranged in the mounting cavity and mounted on the mounting bracket; a piezoelectric sensing component, the piezoelectric sensing component being arranged on the wall surface of the mounting cavity and being arranged opposite to the pressing portion, the piezoelectric sensing component being spaced apart from the mounting bracket and the driving component, and when the button portion is pressed, the piezoelectric sensing component and the button portion are deformed together and generate a piezoelectric signal; a main control board, the main control board being used to detect the piezoelectric signal of the piezoelectric sensing component and to change the operating parameters of the driving component based on the piezoelectric signal.

[0006] According to the oral cleaning device of an embodiment of the present invention, the piezoelectric sensing component is arranged on the wall of the mounting cavity and opposite to the pressing part, and the piezoelectric sensing component is spaced apart from the mounting bracket and the driving component. No matter the button part is pressed to deform the piezoelectric sensing component, or the driving component vibrates during operation, it is convenient to avoid the piezoelectric sensing component from contacting the mounting bracket and causing the piezoelectric sensing component to be subjected to the force applied by the mounting bracket, and to avoid the piezoelectric sensing component from contacting the driving component and causing the piezoelectric sensing component to be subjected to the force applied by the driving component, thereby avoiding the mounting bracket and the driving component from touching the piezoelectric sensing component, causing the piezoelectric sensing component to generate a signal, causing the main control board to misjudge, thereby improving the signal judgment accuracy and operation convenience of the oral cleaning device, and avoiding the reduction of user experience due to misjudgment of the oral cleaning device.

[0007] In some embodiments, when the button portion is pressed, the distance between the piezoelectric sensing component and the driving component is smaller than the distance between the piezoelectric sensing component and the driving component when the button portion is released. When the button portion is pressed, the minimum distance between the piezoelectric sensing component and the driving component is greater than 0 and the minimum distance between the piezoelectric sensing component and the mounting bracket is greater than 0.

[0008] In some embodiments, when the button portion is released, a distance between the piezoelectric sensing component and the driving component in a radial direction of the mounting cavity is greater than 0.3 mm.

[0009] In some embodiments, the oral cleaning device further includes: a power supply assembly, which is disposed in the mounting cavity and mounted on the mounting bracket, and the power supply assembly and the drive assembly are arranged in sequence along the axial direction of the mounting cavity; a shock absorber, which is disposed at one end of the mounting bracket corresponding to the power supply assembly and abuts against the housing.

[0010] In some embodiments, the main control board is disposed in the mounting cavity, and the main control board is electrically connected to the piezoelectric sensing component and the driving component, respectively. The main control board is disposed on the side of the mounting bracket facing the piezoelectric sensing component, and is spaced apart from the piezoelectric sensing component in the radial direction of the mounting cavity.

[0011] In some embodiments, the piezoelectric sensing component includes: a mounting circuit board, which is arranged on the wall of the mounting cavity and is electrically connected to the main control board through a flexible connector; and a piezoelectric sensing device, which is installed on the radial inner side of the mounting circuit board in the radial direction of the mounting cavity.

[0012] In some embodiments, at least a portion of the flexible connector extends along a curve.

[0013] In some embodiments, the mounting bracket is formed with an avoidance gap, and the avoidance gap is used to avoid the joint between the flexible connector and the mounting circuit board.

[0014] In some embodiments, the mounting circuit board is a rigid circuit board; or, the mounting circuit board is a rigid-flexible board and includes a flexible board and a reinforcing board, wherein the reinforcing board is arranged on the wall of the mounting cavity, and the flexible board is arranged between the reinforcing board and the piezoelectric sensing device.

[0015] In some embodiments, the piezoelectric sensing devices are multiple and mounted on the same mounting circuit board. The mounting circuit board is formed with a material reduction hole, and the material reduction hole is located between two adjacent piezoelectric sensing devices.

[0016] In some embodiments, a first abutment portion is provided on the outer peripheral wall of the drive assembly and / or the mounting bracket, and a second abutment portion is provided on the peripheral wall of the mounting cavity, and the second abutment portion abuts against the first abutment portion along the radial direction of the mounting cavity.

[0017] In some embodiments, the first abutting portion and the second abutting portion are slidably engaged in the axial direction of the installation cavity and are positionally engaged in the circumferential direction of the installation cavity.

[0018] In some embodiments, the piezoelectric sensing component is spaced apart from the first abutting portion and the second abutting portion in a circumferential direction of the mounting cavity.

[0019] In some embodiments, the main control board is disposed in the mounting cavity and is electrically connected between the piezoelectric sensing component and the driving component. In the circumferential direction of the mounting cavity, the main control board is spaced apart from the first abutting portion and the second abutting portion, respectively.

[0020] In some embodiments, in the axial direction of the mounting cavity, at least a portion of the pressing portion is offset from the driving assembly.

[0021] In some embodiments, the housing has a center plane, which is perpendicular to the central axis of the mounting cavity. In the axial direction of the mounting cavity, the pressing portion is arranged on the side of the center plane close to the tooth cleaning piece of the oral cleaning appliance; or, in the axial direction of the mounting cavity, the pressing portion extends from one axial side of the center plane to the other axial side of the center plane.

[0022] In some embodiments, the pressing portion extends axially along the mounting cavity, the button portions are multiple and are spaced apart axially along the mounting cavity, the piezoelectric sensing assembly includes multiple piezoelectric sensing devices, and each button portion corresponds to one piezoelectric sensing device.

[0023] In some embodiments, the pressing portion is integrally formed with the housing.

[0024] In some embodiments, the housing further has a gripping portion, which is arranged around the pressing portion, and a thickness of the gripping portion is greater than a thickness of the pressing portion.

[0025] In some embodiments, the pressing portion defines a pressing groove, and in the axial direction of the mounting cavity, both side walls of the pressing groove smoothly transition to the bottom wall of the pressing groove.

[0026] According to the control method of the oral cleaning appliance of the second embodiment of the present invention, the oral cleaning appliance is the oral cleaning appliance according to the above-mentioned first embodiment of the present invention, and the control method includes the following steps: pressing the button part, the main control board receives the signal output by the piezoelectric sensing component; the main control board receives the signal for a duration reaching a preset duration, and controls the driving component to perform a corresponding operation.

[0027] According to the control method of the oral cleaning appliance of the embodiment of the present invention, it is convenient to effectively distinguish the instructions expected by the user from the erroneous operation instructions not expected by the user, reduce the probability of misjudgment, and improve the accuracy of instruction judgment.

[0028] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments with reference to the accompanying drawings, in which:

[0030] Figure 1 is a schematic diagram of an oral cleaning appliance according to one embodiment of the present invention;

[0031] Figure 2 yes Figure 1 An exploded view of the oral cleaning appliance shown in ;

[0032] Figure 3 yes Figure 1 A cross-sectional view of the oral cleaning appliance shown in ;

[0033] Figure 4 yes Figure 1 A cross-sectional view of the housing shown in ;

[0034] Figure 5 is an exploded view of an oral cleaning appliance according to another embodiment of the present invention;

[0035] Figure 6 yes Figure 5 Another exploded view of the oral cleaning appliance shown in ;

[0036] Figure 7 yes Figure 6 An enlarged view of the circled section A;

[0037] Figure 8 is a flow chart of a method for controlling an oral cleaning appliance according to an embodiment of the present invention;

[0038] Figure 9 is a system block diagram of an oral cleaning appliance according to one embodiment of the present invention.

[0039] Reference numerals:

[0040] Oral cleaning device 100,

[0041] Housing 1, center surface 1a, installation cavity 10, second abutting portion 10a,

[0042] Pressing portion 11, button portion 11a, pressing groove 11b,

[0043] Grip 12,

[0044] Tooth cleaning parts 2,

[0045] Mounting bracket 3, avoidance notch 30, first abutment portion 3a,

[0046] Drive component 4,

[0047] Piezoelectric sensing component 5, mounting circuit board 51, material reduction hole 51a, piezoelectric sensing device 52,

[0048] Flexible plate 511, reinforcing plate 512, first material reduction hole section 51b, second material reduction hole section 51c,

[0049] Main control board 6, power supply assembly 7, shock absorber 8, flexible connector 9. DETAILED DESCRIPTION

[0050] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0051] The disclosure below provides many different embodiments or examples for realizing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. In addition, the present invention may repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides examples of various specific processes and materials, but those skilled in the art will appreciate the applicability of other processes and / or the use of other materials.

[0052] Hereinafter, an oral cleaning appliance 100 according to an embodiment of the first aspect of the present invention will be described with reference to the accompanying drawings.

[0053] like Figure 1 and Figure 2 As shown, the oral cleaning appliance 100 includes a housing 1, which defines a mounting cavity 10. The housing 1 has a pressing portion 11, which is formed with at least one button portion 11a. The user can operate the oral cleaning appliance 100 by pressing the button portion 11a.

[0054] The oral cleaning device 100 also includes a mounting bracket 3 and a drive assembly 4. The mounting bracket 3 is arranged in the mounting cavity 10, and the drive assembly 4 is also arranged in the mounting cavity 10. The drive assembly 4 is installed on the mounting bracket 3 to facilitate reliable and stable installation of the drive assembly 4.

[0055] like Figure 2 and Figure 3 As shown, the oral cleaning device 100 also includes a piezoelectric sensing component 5 and a main control board 6. The piezoelectric sensing component 5 is arranged on the wall of the installation cavity 10. For example, the piezoelectric sensing component 5 is bonded to the wall of the installation cavity 10 through an adhesive layer. The piezoelectric sensing component 5 is arranged opposite to the pressing portion 11, that is, the piezoelectric sensing component 5 is installed on the inner wall surface of the pressing portion 11 that defines the installation cavity 10; when the button portion 11a is pressed, the piezoelectric sensing component 5 and the button portion 11a are deformed together and the piezoelectric sensing component 5 generates a piezoelectric signal. The button portion 11a can force the piezoelectric sensing component 5 and the button portion 11a to deform together. The piezoelectric sensing component 5 is subjected to a force to generate a piezoelectric signal, or the piezoelectric sensing component 5 detects the deformation of the button portion 11a and generates a piezoelectric signal. The main control board 6 is used to detect the piezoelectric signal of the piezoelectric sensing component 5, and the main control board 6 changes the operating parameters of the driving component 4 based on the piezoelectric signal, so that the driving component 4 can perform corresponding operations.

[0056] It can be seen that the main control board 6 realizes the communication connection between the piezoelectric sensing component 5 and the driving component 4, so that the driving component 4 can perform corresponding operations according to the piezoelectric signal generated by the piezoelectric sensing component 5.

[0057] Among them, the piezoelectric sensing component 5 is spaced apart from the mounting bracket 3 and the driving component 4, that is, the piezoelectric sensing component 5 is spaced apart from the mounting bracket 3, and the piezoelectric sensing component 5 is also spaced apart from the driving component 4. Therefore, whether the button part 11a is pressed to deform the piezoelectric sensing component 5, or the driving component 4 vibrates during operation, it is convenient to avoid the piezoelectric sensing component 5 from contacting the mounting bracket 3 so that the piezoelectric sensing component 5 is subjected to the force applied by the mounting bracket 3, and to avoid the piezoelectric sensing component 5 from contacting the driving component 4 so that the piezoelectric sensing component 5 is subjected to the force applied by the driving component 4, thereby avoiding the mounting bracket 3 and the driving component 4 from touching the piezoelectric sensing component 5, causing the piezoelectric sensing component 5 to generate a signal, causing the main control board 6 to misjudge, thereby improving the signal judgment accuracy and operation convenience of the oral cleaning device 100, and avoiding the reduction of user experience due to misjudgment of the oral cleaning device 100.

[0058] It can be understood that during the process of pressing the button portion 11a, the piezoelectric sensing component 5 will undergo slight deformation in the direction close to the central axis of the mounting cavity 10, so that the piezoelectric sensing component 5 will be close to the mounting bracket 3 and the driving component 4. The present application sets the piezoelectric sensing component 5 and the mounting bracket 3 and the driving component 4 at intervals to provide sufficient space for the deformation of the piezoelectric sensing component 5 to avoid the piezoelectric sensing component 5 from touching the mounting bracket 3 and the driving component 4; the driving component 4 will inevitably vibrate during operation, causing the driving component 4 and the mounting bracket 3 to be close to the piezoelectric sensing component 5 or even to contact the piezoelectric sensing component 5 during vibration. The present application sets the piezoelectric sensing component 5 and the mounting bracket 3 and the driving component 4 at intervals to provide sufficient space for the vibration of the driving component 4 and the mounting bracket 3 to avoid the driving component 4 and the mounting bracket 3 from touching the piezoelectric sensing component 5.

[0059] According to the oral cleaning device 100 of an embodiment of the present invention, the piezoelectric sensing component 5 is arranged on the wall of the mounting cavity 10 and opposite to the pressing portion 11, and the piezoelectric sensing component 5 is spaced apart from the mounting bracket 3 and the driving component 4. Whether the button portion 11a is pressed to deform the piezoelectric sensing component 5, or the driving component 4 generates vibration during operation, it is convenient to avoid the piezoelectric sensing component 5 from contacting the mounting bracket 3 so that the piezoelectric sensing component 5 is subjected to the force applied by the mounting bracket 3, and to avoid the piezoelectric sensing component 5 from contacting the driving component 4 so that the piezoelectric sensing component 5 is subjected to the force applied by the driving component 4, thereby avoiding the mounting bracket 3 and the driving component 4 from touching the piezoelectric sensing component 5, causing the piezoelectric sensing component 5 to generate a signal, causing the main control board 6 to misjudge, thereby improving the signal judgment accuracy and operation convenience of the oral cleaning device 100, and avoiding the reduction of user experience due to misjudgment of the oral cleaning device 100.

[0060] In addition, compared with some technologies, the piezoelectric sensing component is clamped between two components, and the piezoelectric sensing component contacts the above two components respectively. This assembly method has higher requirements on assembly tolerance accuracy and is more difficult to process and manufacture. In this application, the piezoelectric sensing component 5 only needs to ensure that it fits with the wall of the mounting cavity 10 and is separated from the mounting bracket 3 and the drive component 4 respectively, which reduces the requirements on assembly tolerance accuracy and reduces the processing difficulty, which is conducive to improving assembly efficiency, improving performance consistency, and facilitating the guarantee of performance and quality stability.

[0061] For example, in Figure 3 In the example, in the radial direction of the mounting cavity 10, the piezoelectric sensing component 5 is spaced apart from the driving component 4 and the mounting bracket 3, and the side surface of the piezoelectric sensing component 5 facing away from the pressing portion 11 is spaced apart from the mounting bracket 3 and the driving component 4, that is, the mounting bracket 3 is spaced apart from the side surface of the piezoelectric sensing component 5 facing away from the pressing portion 11, and the driving component 4 is spaced apart from the side surface of the piezoelectric sensing component 5 facing away from the pressing portion 11, so that the mounting bracket 3 and the driving component 4 do not contact the side surface of the piezoelectric sensing component 5 facing away from the pressing portion 11, so as to effectively ensure that the mounting bracket 3 and the driving component 4 will not exert force on the piezoelectric sensing component 5 and cause misjudgment.

[0062] like Figure 1 and Figure 2 As shown, the tooth cleaning piece 2 of the oral cleaning device 100 is arranged outside the mounting cavity 10, and the tooth cleaning piece 2 is arranged at one end of the housing 1 in the axial direction of the mounting cavity 10. The tooth cleaning piece 2 is used to clean the oral cavity, such as cleaning teeth, tongue coating, etc.; wherein, the driving component 4 is used to drive the tooth cleaning piece 2 to operate, for example, the driving component 4 can drive the tooth cleaning piece 2 to rotate or vibrate, etc. to achieve the effect of cleaning the oral cavity.

[0063] Optionally, the tooth cleaning member 2 is detachably connected to the housing 1, which facilitates cleaning and replacement of the tooth cleaning member 2. Furthermore, the same housing 1 can be equipped with tooth cleaning members 2 of different structures, sizes, or functions. For example, the tooth cleaning member 2 can be a toothbrush head, a cleaning needle, a cleaning spoon, or other oral cleaning member. When a housing 1 is equipped with multiple different tooth cleaning members 2, the functions of the oral cleaning device 100 can be enriched. For example, the oral cleaning device 100 is an electric toothbrush.

[0064] The cleaning direction of the tooth cleaning element 2 is consistent with the setting position of the pressing portion 11, that is, the pressing portion 11 is located on the corresponding side of the housing 1 in the direction in which the tooth cleaning element 2 cleans. Figure 2In the example, the tooth cleaning component 2 is a toothbrush head, the bristles of the toothbrush head are arranged upward, so that the toothbrush head cleans upward, and the pressing part 11 is arranged on the upper part of the casing 1. When the user holds the casing 1, it is convenient for the user to operate the pressing part 11, especially convenient for the user to press the pressing part 11 with the thumb, and there is no need to frequently rotate the casing 1 to adjust the position of the pressing part 11, thereby improving the convenience of operation.

[0065] In some embodiments, as Figure 2 and Figure 3 As shown, when the button portion 11a is pressed, the distance between the piezoelectric sensing component 5 and the driving component 4 is smaller than the distance between the piezoelectric sensing component 5 and the driving component 4 when the button portion 11a is released. It can be seen that in the process of pressing the button portion 11a, the piezoelectric sensing component 5 is deformed, so that the distance between the piezoelectric sensing component 5 and the driving component 4 is reduced. That is to say, the process of pressing the button portion 11a can be understood as the process of reducing the distance between the piezoelectric sensing component 5 and the driving component 4; wherein, when the button portion 11a is pressed, the minimum distance between the piezoelectric sensing component 5 and the driving component 4 is greater than 0, and the minimum distance between the piezoelectric sensing component 5 and the mounting bracket 3 is also greater than 0, that is, in the entire process of pressing the button portion 11a, there is always a certain distance between the piezoelectric sensing component 5 and the driving component 4, and there is always a certain distance between the piezoelectric sensing component 5 and the mounting bracket 3, so as to effectively ensure that pressing the button portion 11a will not cause the driving component 4 and the mounting bracket 3 to accidentally touch the piezoelectric sensing component 5 and cause a misjudgment.

[0066] It can be understood that when the button portion 11a is pressed, the distance between the piezoelectric sensing component 5 and the mounting bracket 3 is smaller than the distance between the piezoelectric sensing component 5 and the mounting bracket 3 when the button portion 11a is released. It can be seen that in the process of pressing the button portion 11a, the piezoelectric sensing component 5 is deformed, so that the distance between the piezoelectric sensing component 5 and the mounting bracket 3 is reduced. In other words, the process of pressing the button portion 11a can be understood as the process of reducing the distance between the piezoelectric sensing component 5 and the mounting bracket 3.

[0067] Optionally, when the button portion 11a is pressed, the minimum distance between the piezoelectric sensing component 5 and the driving component 4 is greater than the vibration amplitude of the driving component 4 and also greater than the vibration amplitude of the mounting bracket 3. The minimum distance between the piezoelectric sensing component 5 and the mounting bracket 3 is also greater than the vibration amplitude of the mounting bracket 3 and also greater than the vibration amplitude of the driving component 4. Then, whether the button portion 11a is pressed or released, the distance between the piezoelectric sensing component 5 and the driving component 4 always provides sufficient space for the vibration of the driving component 4 and the vibration of the mounting bracket 3. The distance between the piezoelectric sensing component 5 and the mounting bracket 3 always provides sufficient space for the vibration of the mounting bracket 3 and the driving component 4. That is to say, in the following multiple situations, the piezoelectric sensing component 5 can effectively avoid the vibration of the driving component 4 and the mounting bracket 3 to avoid misjudgment: 1. Press the button portion 11a, and the driving component 4 does not run; 2. Release the button portion 11a, and the driving component 4 does not run; 3. Press the button portion 11a, and the driving component 4 runs; 4. Release the button portion 11a, and the driving component 4 is still running.

[0068] In some embodiments, the button portion 11a is released, and in the radial direction of the mounting cavity 10, the distance between the piezoelectric sensing component 5 and the driving component 4 is greater than 0.3 mm to ensure that the piezoelectric sensing component 5 will not contact the driving component 4 during the entire process of pressing the button portion 11a, thereby ensuring that the piezoelectric sensing component 5 will not contact the mounting bracket 3, so as to effectively avoid misjudgment.

[0069] It should be noted that, in the description of the present application, the radial direction of the installation cavity 10 is perpendicular to the axial direction of the installation cavity 10 , and the axial direction of the installation cavity 10 is the extension direction of the central axis of the installation cavity 10 .

[0070] In some embodiments, as Figure 4 As shown, the inner wall surface of the pressing portion 11 is a uniform surface, for example, the inner wall surface of the pressing portion 11 is a plane, so as to provide a flat installation surface with the piezoelectric sensing component 5, facilitate the stable installation of the piezoelectric sensing component 5, and at the same time facilitate the piezoelectric sensing component 5 to accurately detect the micro-deformation of the pressing portion 11, which is beneficial to improving the detection accuracy of the piezoelectric sensing component 5.

[0071] In some embodiments, as Figure 2As shown, the oral cleaning device 100 also includes a power supply assembly 7, which is arranged in the mounting cavity 10 so that the housing 1 can provide a certain degree of protection for the power supply assembly 7, and at the same time facilitates the assembly of the oral cleaning device 100 into a whole, which is convenient for the user to take and put. The power supply assembly 7 can be electrically connected to the drive assembly 4 to provide power to the drive assembly 4, and the power supply assembly 7 can also be electrically connected to the main control board 6 to provide power to the main control board 6. Among them, the power supply assembly 7 is installed on the mounting bracket 3, which can increase the total weight of the mounting bracket 3 and the components fixed on the mounting bracket 3, thereby helping to reduce the vibration amplitude of the drive assembly 4 when the drive assembly 4 is in operation, reducing the vibration amplitude of the mounting bracket 3 and reducing the vibration amplitude of the power supply assembly 7, and further reducing the probability of misjudgment caused by the components in the mounting cavity 10 touching the piezoelectric sensing component 5; the power supply assembly 7 and the drive assembly 4 are arranged in sequence along the axial direction of the mounting cavity 10 to adapt to the layout space in the mounting cavity 10. For example, the power supply component 7 is arranged on the side of the drive component 4 away from the tooth cleaning component 2, so as to ensure that the power supply component 7 does not interfere with the cooperation between the drive component 4 and the tooth cleaning component 2, and at the same time helps to reduce the distance between the drive component 4 and the tooth cleaning component 2, thereby facilitating the cooperation between the drive component 4 and the tooth cleaning component 2.

[0072] The oral cleaning device 100 also includes a shock absorber 8, which is provided at the end of the mounting bracket 3 corresponding to the power supply component 7. The axial ends of the mounting bracket 3 can be the first end and the second end respectively. The drive component 4 is arranged adjacent to the first end, and the power supply component 7 is arranged adjacent to the second end, that is, the drive component 4 and the power supply component 7 are arranged in sequence from the first end to the second end, and the shock absorber 8 is provided at the second end of the mounting bracket 3; and the shock absorber 8 is stopped against the housing 1, so the shock absorber 8 can play a role of buffering and shock absorption, reducing the vibration transmitted to the housing 1 when the drive component 4 is running, so as to avoid the housing 1 driving the piezoelectric sensing component 5 to vibrate too much, causing the piezoelectric sensing component 5 to touch the components in the mounting cavity 10 and cause misjudgment.

[0073] For example, in Figure 2 In the example, the shock absorber 8, the power supply component 7, the drive component 4 and the tooth cleaning component 2 can be arranged in sequence along the axial direction of the installation cavity 10, so as to ensure the reasonable setting of the center of gravity position of the entire oral cleaning device 100. For example, the center of gravity of the entire oral cleaning device 100 can be roughly set in the middle position of the housing 1.

[0074] Optionally, in Figure 2 In the example, the shock absorber 8 is formed into an annular structure, the housing 1 includes a main body and a base, the base is arranged at one end of the main body away from the tooth cleaning element 2, and the base and the main body jointly define an installation cavity 10, and the shock absorber 8 is stopped between the base and the mounting bracket 3.

[0075] In some embodiments, as Figure 2As shown, the main control board 6 is arranged in the installation cavity 10, and the casing 1 can protect the main control board 6, making it easy to achieve waterproof and dustproof properties of the main control board 6; the main control board 6 is electrically connected to the piezoelectric sensing component 5 and the driving component 4 respectively, so that the main control board 6 can effectively realize the communication connection between the piezoelectric sensing component 5 and the driving component 4. Among them, the main control board 6 is arranged on the side of the mounting bracket 3 facing the piezoelectric sensing component 5, and the main control board 6 and the piezoelectric sensing component 5 are spaced apart in the radial direction of the mounting cavity 10. On the premise of ensuring that there is a sufficient "safety distance" between the main control board 6 and the piezoelectric sensing component 5 so that the main control board 6 will not accidentally touch the piezoelectric sensing component 5, the distance between the main control board 6 and the piezoelectric sensing component 5 is appropriately reduced, thereby shortening the wiring distance between the main control board 6 and the piezoelectric sensing component 5, facilitating the wiring connection between the main control board 6 and the piezoelectric sensing component 5, and at the same time avoiding the wiring between the main control board 6 and the piezoelectric sensing component 5 being too long, which may cause the wiring to scratch or collide with other components in the mounting cavity 10, effectively protecting the wiring, and avoiding the noise generated by collision between components, which is beneficial to improving the sound quality of the oral cleaning device 100.

[0076] Of course, the setting position of the main control board 6 is not limited to this; in other embodiments, the main control board 6 can also be set on the side of the mounting bracket 3 facing away from the piezoelectric sensing component 5; or, on the cross section of the mounting cavity 10, the corresponding central angle between the main control board 6 and the piezoelectric sensing component 5 is 60°, or 90°, or 150°, etc.

[0077] For example, in the radial direction of the mounting cavity 10, taking the position of the pressing portion 11 as the top of the mounting cavity 10, the piezoelectric sensing component 5 can be arranged at the top of the mounting cavity 10, and the main control board 6 can be arranged on the left side, or the right side, or the upper side, or the lower side, or the upper left side, or the upper right side, or the lower left side, or the lower right side of the mounting bracket 3.

[0078] In some embodiments, as Figure 2 As shown, the piezoelectric sensing component 5 includes a mounting circuit board 51 and a piezoelectric sensing device 52. The mounting circuit board 51 is arranged on the wall surface of the mounting cavity 10, and the mounting circuit board 51 is arranged on the inner wall surface of the pressing portion 11 that defines the mounting cavity 10. The mounting circuit board 51 is electrically connected to the main control board 6 through a flexible connector 9. Since the flexible connector 9 has good flexibility, the flexible connector 9 can adapt to the flexible setting of the mounting circuit board 51 and the main control board 6, which is beneficial to reducing the setting requirements of the relative position of the mounting circuit board 51 and the main control board 6; in the radial direction of the mounting cavity 10, the piezoelectric sensing device 52 is installed on the radial inner side of the mounting circuit board 51, that is, the piezoelectric sensing device 52 is installed on the side of the mounting circuit board 51 that is away from the pressing portion 11, so as to achieve reliable and stable installation of the piezoelectric sensing device 52, and at the same time facilitate the piezoelectric sensing device 52 to sensitively sense the micro-deformation of the pressing portion 11.

[0079] In addition, since the flexible connector 9 has good flexibility, the flexible connector 9 can better adapt to the vibration of the mounting circuit board 51 and the main control board 6, reducing the influence of the vibration between the mounting circuit board 51 and the main control board 6.

[0080] Optionally, in Figure 2 In the example, the piezoelectric sensing device 52 can be formed as a circular flat plate structure, and the shape of the piezoelectric sensing device 52 matches the deformation of the button portion 11a when the user presses it, so as to sensitively sense the micro-deformation of the pressing portion 11; for example, the diameter D of the piezoelectric sensing device 52 satisfies 8mm≤D≤15mm.

[0081] Optionally, in Figure 2 In the example, the piezoelectric sensing device 52 can be formed as a circular flat plate structure, and the shape of the piezoelectric sensing device 52 matches the deformation of the button portion 11a when the user presses it, so as to sensitively sense the micro-deformation of the pressing portion 11; for example, the diameter D of the piezoelectric sensing device 52 satisfies 8mm≤D≤15mm.

[0082] Optionally, in Figure 2 and Figure 3 In the example, at least part of the flexible connector 9 extends along the curve, so that the flexible connector 9 can better adapt to the arrangement of the components in the installation cavity 10, avoid interference between the flexible connector 9 and other components, and at the same time make full use of the arrangement space of the installation cavity 10, and the part of the flexible connector 9 extending along the curve can also have good deformation ability to better adapt to the vibration between the components, thereby reducing the probability of misjudgment of the piezoelectric sensing device 52 due to the pulling of the flexible connector 9 by the vibration of the drive component 4, and at the same time, it can avoid the flexible connector 9 from being separated from the installation circuit board 51 and the main control board 6 due to the vibration of the drive component 4.

[0083] For example, in Figure 5 and Figure 6 In the example, one end of the flexible connector 9 is connected to the side of the mounting circuit board 51 away from the drive assembly 4, and the other end of the flexible connector 9 is connected to the side of the main control board 6 away from the drive assembly 4. The flexible connector 9 has an "overlapping section", for example, the flexible connector 9 extends into a U-shaped structure.

[0084] Optionally, the flexible connector 9 may include at least one of a flexible printed circuit board (FPC), a flexible flat cable, and a spring pin. Figure 2 and Figure 5 In the example, the flexible connector 9 is a flexible circuit board, which makes full use of the layout space of the installation cavity 10 and facilitates the electrical connection between the flexible connector 9 and the installation circuit board 51 and the main control board 6.

[0085] Of course, in other embodiments of the present application, the flexible connector 9 may also extend along a straight line.

[0086] In some embodiments, as Figure 2 and Figure 5 As shown, the mounting bracket 3 is formed with an avoidance gap 30, which is used to avoid the joint between the flexible connector 9 and the mounting circuit board 51, so as to provide sufficient setting space for the joint between the flexible connector 9 and the mounting circuit board 51, which is conducive to making full use of the internal space of the mounting cavity 10. At the same time, the wall of the avoidance gap 30 can be set around the joint. To a certain extent, the wall of the avoidance gap 30 can play a role in protecting the joint, preventing other components from colliding with the joint and causing joint failure.

[0087] Optionally, in Figure 2 In the example, the mounting circuit board 51 is a rigid circuit board (i.e., a PCB), which ensures that the mounting circuit board 51 has good structural strength, allowing the mounting circuit board 51 to stably support the piezoelectric sensing device 52. Furthermore, the mounting circuit board 51 provides a relatively flat mounting surface for the piezoelectric sensing assembly 5, facilitating reliable installation of the piezoelectric sensing assembly 5. In this case, the piezoelectric sensing device 52 can be fixed to the rigid circuit board by welding or bonding, facilitating assembly of the piezoelectric sensing assembly 5.

[0088] Optionally, in Figure 5 and Figure 6 In the example, the mounting circuit board 51 is a rigid-flexible board, and includes a flexible board 511 and a reinforcing board 512. The reinforcing board 512 is disposed on the wall of the mounting cavity 10. Due to its good structural strength, the reinforcing board 512 stably supports the flexible board 511 and the piezoelectric sensing device 52. At the same time, the reinforcing board 512 provides a relatively flat mounting surface, facilitating the reliable installation of the piezoelectric sensing component 5. The flexible board 511 is disposed between the reinforcing board 512 and the piezoelectric sensing device 52, that is, the flexible board 511 is disposed on the side of the reinforcing board 512 facing away from the pressing portion 11, which also enables reliable installation of the piezoelectric sensing device 52. In this case, the piezoelectric sensing device 52 can be fixed to the flexible board 511 by welding or adhesive bonding.

[0089] Optionally, when the installed circuit board 51 includes a flexible board 511 and a reinforcing board 512, the flexible board 511 and the flexible connector 9 can be an integrated part, or the flexible board 511 and the flexible connector 9 can be set separately. At this time, the flexible board 511 is transferred to the main control board 6 through the flexible connector 9.

[0090] It can be understood that the thickness of the mounting circuit board 51 can be appropriately set to be thinner to free up installation space for other components. At the same time, the distance between the piezoelectric sensing device 52 and the drive component 4 and the mounting bracket 3 can be appropriately increased to further reduce the impact of the vibration of the drive component 4 and the vibration of the mounting bracket 3 on the piezoelectric sensing device 52.

[0091] Therefore, the structure of the mounting circuit board 51 is flexible, which is convenient for adapting to the differentiated requirements of different oral cleaning appliances 100 .

[0092] It is understandable that the structure of the mounting circuit board 51 is not limited thereto, and it is only necessary to ensure that the mounting circuit board 51 is reliably disposed on the wall surface of the mounting cavity 10 and that the piezoelectric sensing device 52 is reliably mounted.

[0093] In some embodiments, as Figure 6 and Figure 7 As shown, there are multiple piezoelectric sensing devices 52, and the multiple piezoelectric sensing devices 52 are installed on the same mounting circuit board 51. The mounting circuit board 51 is formed with a material reduction hole 51a, and the material reduction hole 51a is located between two adjacent piezoelectric sensing devices 52. The material reduction hole 51a can appropriately reduce the rigidity of the mounting circuit board 51, so that when the user presses the button part 11a to make one of the two adjacent piezoelectric sensing devices 52 issue a corresponding instruction, it is avoided that the other of the two adjacent piezoelectric sensing devices 52 is also touched due to the high rigidity of the mounting circuit board 51, resulting in misjudgment, thereby avoiding false touches caused by linkage and improving the operational accuracy of the oral cleaning device 100.

[0094] Optionally, the material reduction hole 51 a may be a blind hole or a through hole.

[0095] For example, in Figure 7 In the example, two adjacent piezoelectric sensing devices 52 can be spaced apart along the length direction of the mounting circuit board 51, the material reduction hole 51a is a through hole, and the material reduction hole 51a is spaced apart between the two adjacent piezoelectric sensing devices 52, the material reduction hole 51a can include a first material reduction hole section 51b, and the first material reduction hole section 51b extends into an S shape; the material reduction hole 51a can also include a second material reduction hole section 51c, and there are two second material reduction hole sections 51c, each second material reduction hole section 51c passes through the width edge of the mounting circuit board 51, and the two second material reduction hole sections 51c are arranged in a centrally symmetrical manner about the center of the first material reduction hole section 51.

[0096] Of course, the present application is not limited to this; in other embodiments, when there are multiple piezoelectric sensing devices 52, the multiple piezoelectric sensing devices 52 can also be installed on different mounting circuit boards 51. For example, the number of mounting circuit boards 51 is equal to the number of piezoelectric sensing devices 52, and each piezoelectric sensing device 52 is installed on the corresponding mounting circuit board 51.

[0097] In some embodiments, as Figure 2 and Figure 4 As shown, a first abutting portion 3a is provided on the outer peripheral wall of the driving component 4 and / or the mounting bracket 3, and a second abutting portion 10a is provided on the peripheral wall of the mounting cavity 10. The second abutting portion 10a abuts against the first abutting portion 3a along the radial direction of the mounting cavity 10, and the second abutting portion 10a can apply a force along the radial direction of the mounting cavity 10 to the first abutting portion 3a, so as to realize the radial limitation of the driving component 4 in the mounting cavity 10, ensure that the driving component 4 is reliably and stably arranged in the mounting cavity 10, avoid the driving component 4 from shaking relative to the casing 1, facilitate reducing the vibration amplitude of the driving component 4 at the "vibration source", and help reduce the noise of the oral cleaning device 100.

[0098] It can be understood that the setting of the first abutment portion 3a can include the following multiple setting methods: 1. The first abutment portion 3a is arranged on the outer peripheral wall of the driving component 4; 2. The first abutment portion 3a is arranged on the mounting bracket 3; 3. The first abutment portion 3a is respectively provided on the outer peripheral wall of the driving component 4 and the mounting bracket 3.

[0099] The number of the first abutting portions 3a and the number of the second abutting portions 10a can be set according to actual needs; for example, there can be one or more first abutting portions 3a, one or more second abutting portions 10a, one first abutting portion 3a can abut with one or more second abutting portions 10a, and one second abutting portion 10a can abut with one or more first abutting portions 3a. Figure 2 and Figure 4 In the example, there are multiple first abutting portions 3a and multiple second abutting portions 10a, and the multiple first abutting portions 3a can be arranged at intervals along the circumference of the installation cavity 10, and each first abutting portion 3a is respectively abutted and matched with one second abutting portion 10a.

[0100] In some embodiments, as Figure 2 and Figure 4 As shown, the first abutment portion 3a and the second abutment portion 10a are slidably matched in the axial direction of the mounting cavity 10, so as to facilitate the quick installation of the drive assembly 4 and the mounting bracket 3 in the mounting cavity 10. The first abutment portion 3a and the second abutment portion 10a are matched in the circumferential upper limit of the mounting cavity 10, and the second abutment portion 10a can apply a force along the circumference of the mounting cavity 10 to the first abutment portion 3a, so as to realize the circumferential limitation of the drive assembly 4 in the mounting cavity 10, and further ensure that the drive assembly 4 is stably arranged in the mounting cavity 10.

[0101] Optionally, in Figure 2 and Figure 4In the example, a slide groove is formed on one of the first abutting portion 3a and the second abutting portion 10a, and a slider is formed on the other of the first abutting portion 3a and the second abutting portion 10a. For example, the first abutting portion 3a is formed with a slide groove and the second abutting portion 10a has a slider, or the first abutting portion 3a has a slider and the second abutting portion 10a is formed with a slide groove. The slide groove extends along the axial direction of the mounting cavity 10, the slider slides with the slide groove, and the two side walls of the slide groove in the circumferential direction of the mounting cavity 10 are used to limit the movement of the slider in the circumferential direction of the mounting cavity 10. The first abutting portion 3a and the second abutting portion 10a have a simple structure, are easy to assemble, and have reliable matching.

[0102] It can be understood that the lengths of the first abutting portion 3 a and the second abutting portion 10 a in the axial direction of the mounting cavity 10 can be specifically set according to actual applications.

[0103] In some embodiments, as Figure 2 and Figure 4 As shown, in the circumferential direction of the installation cavity 10, the piezoelectric sensing component 5 and the first abutting portion 3a and the second abutting portion 10a are spaced apart from each other, which is beneficial to avoid interference between the piezoelectric sensing component 5 and the first abutting portion 3a and the second abutting portion 10a, and facilitates the avoidance setting of the piezoelectric sensing component 5 and the first abutting portion 3a and the second abutting portion 10a. There is no need to shorten the fitting length of the first abutting portion 3a and the second abutting portion 10a due to avoiding the piezoelectric sensing component 5, thereby ensuring that the driving component 4 is installed reliably.

[0104] For example, in Figure 2 and Figure 4 In the example, in the radial direction of the installation cavity 10, the position of the pressing portion 11 is the top of the installation cavity 10, and the piezoelectric sensing component 5 can be arranged at the top of the installation cavity 10, and the abutting first abutting portion 3a and the second abutting portion 10a can be arranged on the left and / or right side of the installation cavity 10; but it is not limited to this.

[0105] In some embodiments, as Figure 2 and Figure 4 As shown, the main control board 6 is disposed in the mounting cavity 10, which facilitates waterproofing and dustproofing of the main control board 6. The main control board 6 is electrically connected between the piezoelectric sensing assembly 5 and the drive assembly 4, so that the main control board 6 can achieve communication connection between the piezoelectric sensing assembly 5 and the drive assembly 4. In the circumferential direction of the mounting cavity 10, the main control board 6 and the first abutting portion 3a and the second abutting portion 10a are spaced apart, which helps to avoid interference between the main control board 6 and the first abutting portion 3a and the second abutting portion 10a, and facilitates the avoidance setting of the main control board 6 and the first abutting portion 3a and the second abutting portion 10a. There is no need to shorten the matching length of the first abutting portion 3a and the second abutting portion 10a to avoid the main control board 6, thereby ensuring reliable installation of the drive assembly 4.

[0106] For example, in the circumferential direction of the mounting cavity 10, the piezoelectric sensing component 5 is spaced apart from the first abutting portion 3a and the second abutting portion 10a, and the main control board 6 is spaced apart from the first abutting portion 3a and the second abutting portion 10a, and at the same time, in the radial direction of the mounting cavity 10, the piezoelectric sensing component 5 and the main control board 6 are also spaced apart. Figure 2 In the example, in the radial direction of the installation cavity 10, the position of the pressing portion 11 is the top of the installation cavity 10, the piezoelectric sensing component 5 can be arranged at the top of the installation cavity 10, the main control board 6 can be arranged on the top side or bottom side of the installation bracket 3, and the first abutting portion 3a and the second abutting portion 10a that abut against each other can be arranged on the left and / or right side of the installation cavity 10.

[0107] In some embodiments, as Figure 2 and Figure 3 As shown, in the axial direction of the installation cavity 10, at least a portion of the pressing portion 11 is offset from the drive assembly 4. Then, in the axial direction of the installation cavity 10, the entire pressing portion 11 is offset from the drive assembly 4. At this time, in any longitudinal section of the housing 1, the orthographic projection of the pressing portion 11 and the orthographic projection of the drive assembly 4 may not overlap. Alternatively, in the axial direction of the installation cavity 10, there is a longitudinal section of the housing 1 such that the orthographic projection of the pressing portion 11 partially overlaps with the orthographic projection of the drive assembly 4. Thus, it is convenient to offset at least a portion of the piezoelectric sensing component 5 from the drive assembly 4 in the axial direction of the installation cavity 10, ensuring that the piezoelectric sensing component 5 and the drive assembly 4 have a reasonable distance in the axial direction of the installation cavity 10, which is beneficial to reducing the impact of the operation of the drive assembly 4 on the piezoelectric sensing component 5 and further avoiding misjudgment.

[0108] In some embodiments, as Figure 2 As shown, the housing 1 has a central plane 1 a , which is perpendicular to the central axis of the installation cavity 10 , and the central plane 1 a is parallel to the cross section of the housing 1 .

[0109] In the axial direction of the mounting cavity 10, the pressing portion 11 is provided on the side of the center plane 1a close to the tooth cleaning piece 2 of the oral cleaning appliance 100. In this case, the pressing portion 11 is spaced apart from the center plane 1a, or the pressing portion 11 is not spaced apart from the center plane 1a. Alternatively, in the axial direction of the mounting cavity 10, the pressing portion 11 extends from one axial side of the center plane 1a to the other axial side of the center plane 1a. In this case, a portion of the pressing portion 11 is located on the side of the center plane 1a close to the tooth cleaning piece 2, and another portion of the pressing portion 11 is located on the side of the center plane 1a away from the tooth cleaning piece 2. Thus, in the axial direction of the mounting cavity 10, the pressing portion 11 is generally provided at the center of the housing 1, or is provided near the center of the housing 1. When the user holds the housing 1 for use, it is convenient for the user's hand to avoid the portion of the housing 1 corresponding to the pressing portion 11, thereby preventing the user from accidentally touching the pressing portion 11 while holding the pressing portion 11.

[0110] It is understandable that, in the circumferential direction of the mounting cavity 10, the pressing portion 11 does not correspond to the entire circle of the housing 1, that is, the central angle corresponding to the pressing portion 11 is less than 360°; for example, Figure 2 and Figure 4 In the example, on the cross section of the mounting cavity 10 , with the orthographic projection of the central axis of the mounting cavity 10 as the center of the circle, the central angle α corresponding to the pressing portion 11 may satisfy 20°≤α≤90°.

[0111] In some embodiments, as Figure 2 As shown, the pressing portion 11 extends along the axial direction of the mounting cavity 10, so as to ensure that the pressing portion 11 has a sufficient operating area, and at the same time, the length of the pressing portion 11 in the circumferential direction of the mounting cavity 10 can be appropriately reduced, further reducing the probability of accidental touching by the user when holding it; there are multiple button portions 11a, and the multiple button portions 11a are arranged at intervals along the axial direction of the mounting cavity 10, and the piezoelectric sensing component 5 includes multiple piezoelectric sensing devices 52, each button portion 11a corresponds to a piezoelectric sensing device 52, and the multiple piezoelectric sensing devices 52 can be arranged along the axial direction of the mounting cavity 10. At the same time, when the user holds the casing 1 for use, all the button portions 11a can be operated without rotating the casing 1, that is, the user can implement all execution commands of the oral cleaning device 100 without rotating it, which improves the convenience of operation and improves the cleaning efficiency.

[0112] It is understandable that when there are multiple button parts 11a, the arrangement of the multiple mounting parts is not limited to this. For example, the multiple button parts 11a can also be arranged in a semicircle or a circle along the circumference, etc.

[0113] In some embodiments, as Figure 4 As shown, the pressing portion 11 is integrally formed with the casing 1, so there will be no gap between the pressing portion 11 and the casing 1, realizing an integrated design of seamless buttons of the casing 1. During use by the user, water, toothpaste foam, toothpaste particles, tooth powder, etc. that come into contact with the casing 1 will not be hidden in the gap between the pressing portion 11 and the casing 1 to generate stains, breed bacteria, etc. The stains on the outer surface of the casing 1 can be directly washed away by water flow, which effectively ensures the cleanliness of the oral cleaning device 100, and also facilitates the cleaning of the oral cleaning device 100, which is beneficial to the user's personal hygiene.

[0114] Therefore, compared with some technologies in which a separate physical button is set on the pressing part, or a separate soft-glue button is set on the pressing part, which causes dirt to hide in the gaps around the physical button or the soft-glue button, the present application cancels the design of separate physical buttons and soft-glue buttons, and directly integrally forms the pressing part 11 into the housing 1, eliminating the gap between the housing 1 and the separate button, avoiding the risk of hiding dirt, and avoiding dirt and mold in the gaps around the button, which may easily lead to failure of the sealing of the housing 1, etc. At the same time, it improves the waterproof performance and sealing performance of the housing 1, which is beneficial to improving the overall appearance and appearance texture of the oral cleaning device 100.

[0115] In some embodiments, as Figure 4 As shown, the housing 1 also has a gripping portion 12. When a user uses the oral cleaning device 100, they grip the gripping portion 12. The gripping portion 12 is arranged around the pressing portion 11. The gripping portion 12 can define a pressing opening. The pressing portion 11 is integrally formed at the edge of the pressing opening to ensure that the gripping portion 12 has a sufficient gripping area and that the user can hold the oral cleaning device 100 stably. The thickness of the gripping portion 12 is greater than the thickness of the pressing portion 11, that is, the thickness of the pressing portion 11 is less than the thickness of the edge of the pressing opening. Therefore, when the pressing portion 11 is pressed, it is easy for the pressing portion 11 to deform and generate stress concentration, so that it can be detected by the piezoelectric sensor component.

[0116] In addition, since the thickness of the pressing portion 11 is relatively small, when the pressing portion 11 is pressed, relatively concentrated stress changes and stress concentrations are generated in the pressing portion 11 , which further facilitates detection by the piezoelectric sensing component 5 .

[0117] Optionally, the thickness of the pressing portion 11 is t, and the thickness of the gripping portion 12 is T, with 0.4T≤t≤0.8T. For example, t can be 0.4T, 0.5T, 0.6T, 0.72T, 0.8T, and so on. This can prevent the pressing portion 11 from being too thin, which could easily lead to injection molding thickness marks between the pressing portion 11 and the housing 1 during the molding process. It can also prevent the pressing portion 11 from being too thick, which could easily affect the stress and deformation of the pressing portion 11 and the detection sensitivity of the piezoelectric sensing component 5. For example, if T = 2mm, then 0.8mm≤t≤1.6mm; further, 0.9mm≤t≤1.2mm.

[0118] Optionally, the button portion 11a is configured with non-uniform thickness, so that when the pressing portion 11 is pressed, stress concentration is more likely to occur on the button portion 11a, causing micro-deformation, which can be detected by the piezoelectric sensing component 5. Of course, the button portion 11a can also be configured with uniform thickness, in which case the strength of the piezoelectric signal can be identified by a software algorithm.

[0119] Optionally, the thickness of the pressing portion 11 is smaller than the thickness of the remaining portion of the housing 1 except the pressing portion 11. It is understood that the thickness of the pressing portion 11 can be specifically set according to the material of the pressing portion 11, etc.

[0120] Optionally, the outer surface area S of the pressing portion 11 satisfies 50 mm 2 ≤S≤500mm 2 , so as to ensure that the button portion 11a has sufficient setting area, and at the same time, the pressing portion 11 does not occupy an area that is too large to easily cause accidental touch. For example, the shape of the pressing portion 11 can be circular, or an elongated strip (such as an oblong), etc. When the pressing portion 11 is circular, the diameter d of the pressing portion 11 satisfies 8mm≤d≤25mm, so that the pressing portion 11 can adapt to oral cleaning appliances 100 of different sizes and meet the differentiated usage needs of different users. Furthermore, 10mm≤d≤15mm is suitable for better ergonomic design.

[0121] In some embodiments, as Figure 2 and Figure 4 As shown, the pressing portion 11 defines a pressing groove 11b. In the axial direction of the installation cavity 10, the side walls of the pressing groove 11b are smoothly transitioned to the bottom wall of the pressing groove 11b. Therefore, it is not easy to define a cleaning blind area between the side walls of the pressing groove 11b and the bottom wall of the pressing groove 11b, which is conducive to avoiding dirt and grime on the edge of the pressing groove 11b, and further facilitates the cleaning of the casing 1.

[0122] Optionally, in Figure 4 In the example of FIG, the side wall of the pressing groove 11 b transitions to the bottom wall of the pressing groove 11 b through an arc.

[0123] Other structures and operations of the oral cleaning appliance 100 according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail here.

[0124] According to the control method of the oral cleaning appliance 100 of the second embodiment of the present invention, the oral cleaning appliance 100 is the oral cleaning appliance 100 according to the first embodiment of the present invention, such as Figure 8 As shown, the control method includes the following steps:

[0125] When the button portion 11a is pressed, the main control board 6 receives the signal output by the piezoelectric sensing component 5; when the main control board 6 receives the signal continuously for a preset time, it controls the drive component 4 to perform the corresponding operation. Therefore, when the drive component 4 is running and causes the housing 1 to vibrate, the high-frequency vibration of the user's finger in the short period of time when the user presses the button portion 11a can easily cause the piezoelectric sensing component 5 to output multiple piezoelectric signals, thereby causing the main control board 6 to output multiple instructions accordingly. These multiple instructions are inconsistent with the instructions the user expects to execute, resulting in misjudgment. However, the present application controls the drive component 4 to perform the corresponding operation only when the main control board 6 receives the signal continuously for a preset time, so as to effectively distinguish the instructions expected by the user from the erroneous operation instructions that the user does not expect, thereby reducing the probability of misjudgment and improving the accuracy of instruction judgment.

[0126] It is understandable that the main control board 6 can output one or more types of instructions; when the main control board 6 can output multiple types of instructions, the preset time lengths corresponding to the multiple instructions can be the same or different.

[0127] According to the control method of the oral cleaning appliance 100 of the embodiment of the present invention, it is convenient to effectively distinguish the instructions expected by the user from the erroneous operation instructions not expected by the user, reduce the probability of misjudgment, and improve the accuracy of instruction judgment.

[0128] Optionally, the preset duration x satisfies 0.08s≤x≤2s, for example, x may be 0.08s, or 0.1s, or 0.5s, or 1s, or 1.6s, or 2s, etc.

[0129] For example, Figure 9 As shown, when a user uses the oral cleaning device 100, they press the button portion 11a. The piezoelectric sensing component 5 detects the micro-deformation of the button portion 11a through the piezoelectric effect and generates a piezoelectric signal. The piezoelectric signal generated by the piezoelectric sensing component 5 is transmitted to the main control board 6 (e.g., MCU). The main control board 6 receives the piezoelectric signal and outputs a corresponding control instruction based on the edited program and logic algorithm stored in the main control board 6, so that the driving component 4 (e.g., motor) performs the corresponding operation. Of course, the oral cleaning device 100 can also charge the power supply component 7 through the charging port.

[0130] The pressing force F applied by the user to the button portion 11 a generally satisfies 0.5N≤F≤5N; further, 1N≤F≤2N.

[0131] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention 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 therefore cannot be understood as limiting the present invention. In addition, features defined as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0132] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0133] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative uses 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 any one or more embodiments or examples.

[0134] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. An oral cleaning device, characterized in that: include: A housing, the housing having a pressing portion, the pressing portion being formed with at least one button portion, and a mounting cavity being defined within the housing; a mounting bracket, the mounting bracket being arranged in the mounting cavity; a drive assembly, the drive assembly being disposed in the mounting cavity and mounted on the mounting bracket; a piezoelectric sensing component disposed on a wall surface of the mounting cavity and opposite to the pressing portion, the piezoelectric sensing component being spaced apart from the mounting bracket and the driving component, and deforming together with the button portion when the button portion is pressed to generate a piezoelectric signal; a main control board, the main control board being used to detect a piezoelectric signal from the piezoelectric sensing component and to change an operating parameter of the driving component based on the piezoelectric signal; A first abutting portion is provided on the outer peripheral wall of the driving assembly and / or the mounting bracket, and a second abutting portion is provided on the peripheral wall of the mounting cavity. The second abutting portion abuts against the first abutting portion along the radial direction of the mounting cavity.

2. The oral cleaning appliance according to claim 1, characterized in that When the button portion is pressed, the distance between the piezoelectric sensing component and the driving component is smaller than the distance between the piezoelectric sensing component and the driving component when the button portion is released. When the button portion is pressed, the minimum distance between the piezoelectric sensing component and the driving component is greater than 0 and the minimum distance between the piezoelectric sensing component and the mounting bracket is greater than 0.

3. The oral cleaning appliance according to claim 1, characterized in that When the button portion is released, the distance between the piezoelectric sensing component and the driving component in the radial direction of the installation cavity is greater than 0.3 mm.

4. The oral cleaning appliance according to claim 1, characterized in that Also includes: A power supply assembly, the power supply assembly being disposed in the mounting cavity and mounted on the mounting bracket, the power supply assembly and the drive assembly being sequentially disposed along the axial direction of the mounting cavity; A shock absorbing member is provided at one end of the mounting bracket corresponding to the power supply assembly and abuts against the housing.

5. The oral cleaning appliance according to claim 1, characterized in that The main control board is arranged in the installation cavity, and the main control board is electrically connected to the piezoelectric sensing component and the driving component respectively. The main control board is arranged on the side of the installation bracket facing the piezoelectric sensing component, and is spaced apart from the piezoelectric sensing component in the radial direction of the installation cavity.

6. The oral cleaning appliance according to claim 1, characterized in that The piezoelectric sensing component includes: An installation circuit board is provided on a wall surface of the installation cavity and is electrically connected to the main control board via a flexible connector; The piezoelectric sensing device is installed on the radial inner side of the mounting circuit board in the radial direction of the mounting cavity.

7. The oral cleaning appliance according to claim 6, characterized in that At least a portion of the flexible connector extends along a curve.

8. The oral cleaning appliance according to claim 6, characterized in that The mounting bracket is formed with an avoidance gap, and the avoidance gap is used to avoid the joint portion between the flexible connector and the mounting circuit board.

9. The oral cleaning appliance according to claim 6, characterized in that The mounting circuit board is a rigid circuit board; or, The mounting circuit board is a hard-flex board and includes a flexible board and a reinforcing board. The reinforcing board is arranged on the wall surface of the mounting cavity, and the flexible board is arranged between the reinforcing board and the piezoelectric sensing device.

10. The oral cleaning appliance according to claim 6, characterized in that There are multiple piezoelectric sensing devices installed on the same mounting circuit board. A material reduction hole is formed on the mounting circuit board. The material reduction hole is located between two adjacent piezoelectric sensing devices.

11. The oral cleaning appliance according to claim 1, characterized in that The first abutting portion and the second abutting portion are slidably engaged in the axial direction of the installation cavity and are positionally engaged in the circumferential direction of the installation cavity.

12. The oral cleaning appliance according to claim 1, characterized in that In the circumferential direction of the installation cavity, the piezoelectric sensing component is spaced apart from the first abutting portion and the second abutting portion.

13. The oral cleaning appliance according to claim 1, characterized in that The main control board is disposed in the installation cavity and is electrically connected between the piezoelectric sensing component and the driving component. In the circumferential direction of the installation cavity, the main control board is spaced apart from the first abutting portion and the second abutting portion.

14. The oral cleaning appliance according to claim 1, characterized in that In the axial direction of the installation cavity, at least a portion of the pressing portion is offset from the driving assembly.

15. The oral cleaning appliance according to claim 1, characterized in that The housing has a central plane, and the central plane is perpendicular to the central axis of the installation cavity. In the axial direction of the mounting cavity, the pressing portion is provided on a side of the central surface close to the tooth cleaning piece of the oral cleaning appliance; or In the axial direction of the installation cavity, the pressing portion extends from one axial side of the central plane to the other axial side of the central plane.

16. The oral cleaning appliance according to claim 1, characterized in that The pressing portion extends along the axial direction of the installation cavity. The button portions are multiple and are arranged at intervals along the axial direction of the installation cavity. The piezoelectric sensing assembly includes multiple piezoelectric sensing devices, and each button portion corresponds to one piezoelectric sensing device.

17. The oral cleaning appliance according to any one of claims 1 to 16, characterized in that The pressing portion is integrally formed with the housing.

18. The oral cleaning appliance according to claim 17, characterized in that The housing further comprises a gripping portion, which is arranged around the pressing portion, and a thickness of the gripping portion is greater than a thickness of the pressing portion.

19. The oral cleaning appliance according to claim 17, wherein The pressing portion defines a pressing groove, and in the axial direction of the mounting cavity, both side walls of the pressing groove smoothly transition to the bottom wall of the pressing groove.

20. A method for controlling an oral cleaning appliance, characterized in that: The oral cleaning appliance is an oral cleaning appliance according to any one of claims 1 to 19, and the control method comprises the following steps: Press the button portion, and the main control board receives the signal output by the piezoelectric sensing component; The main control board receives the signal for a duration that reaches a preset duration, and controls the driving component to perform a corresponding operation.

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