Driving device for oral cavity cleaning, brush handle assembly and oral cavity cleaner

Abstract

The utility model discloses a driving device used for oral cavity cleaning, a brush handle assembly and an oral cavity cleaner, the driving device at least comprises a driving body and a motion detection component, the driving body comprises a shell element and a rotating assembly, the rotating assembly is rotatably installed on the shell element, and the motion detection component is installed on the shell element. At least one end of the rotating assembly extends to the outside of the shell element along the first axis, the shell element comprises an outer shell and a tail cover, the tail cover is arranged at the end, along the first axis, of the outer shell, and the outer shell and the tail cover define a containing cavity; the motion detection component at least partially located in the containing cavity comprises a motion detection assembly and a motion feedback assembly, the motion feedback assembly is connected with the rotating assembly, the motion detection assembly is directly connected with the outer shell through the mounting support, and the motion detection assembly detects the motion position of the rotating assembly through the motion feedback assembly. According to the technical scheme, the control effect on the oral cavity cleaner can be improved, and the use experience of a user is improved.

Description

Technical Field

[0001] The present application relates to the technical field of oral cleaning appliances, and in particular to a driving device, a brush handle assembly, and an oral cleaner for oral cleaning. Background Art

[0002] In the related art, an electric toothbrush is connected to a brush head through a drive shaft of an internal motor component thereof, so as to achieve reciprocating swing of the brush head, thereby improving cleaning efficiency.

[0003] However, the motor components of electric toothbrushes typically operate at a few predetermined frequencies and / or amplitudes, failing to provide the desired vibrations. While the motor components can be equipped with motion detectors to control the motion of the output shaft, existing motion detectors often have complex mounting structures and lack precision, ultimately resulting in poor control of the brush head assembly, negatively impacting tooth cleaning effectiveness and oral health. Utility Model Content

[0004] The purpose of this application is to provide a drive device, a brush handle assembly and an oral cleaner for oral cleaning, which can improve the control effect of the oral cleaner and improve the user experience.

[0005] To achieve the above-mentioned objectives, the present application provides, on the one hand, a driving device for oral cleaning, wherein the driving device for oral cleaning comprises at least a driving body and a motion detection component, wherein the driving body extending along a first axis comprises a shell element and a rotating component, the rotating component is rotatably mounted on the shell element, at least one end of the rotating component extends along the first axis to the outside of the shell element, the shell element comprises an outer shell and a tail cover, the tail cover is arranged at one end of the outer shell along the first axis, the outer shell and the tail cover are arranged to form a accommodating chamber; the motion detection component at least partially located in the accommodating chamber comprises a motion detection component and a motion feedback component, wherein the motion feedback component is connected to the rotating component and rotates with the rotating component, the motion detection component is directly connected to the outer shell via a mounting bracket, and the motion detection component detects the motion position of the rotating component through the motion feedback component.

[0006] Compared with the related art that first connects the tail cover to the outer shell and then connects the motion detection component to the tail cover through the corresponding support, which requires three positioning and assembly processes, the technical solution provided by this application is precisely through the above-mentioned method of directly connecting the motion detection component in the drive device to the outer shell through the mounting bracket, so that the motion detection component only needs two positioning and installation operations to complete the positioning and assembly, which simplifies the assembly process, significantly reduces the assembly complexity, and solves the problem of large differences in assembly accuracy caused by multiple assemblies. When the drive device is used in oral cleaners such as electric toothbrushes and all-in-one flushing machines, the modified solution of this application can greatly improve the consistency of the assembly accuracy of the motion detection component, thereby helping to provide a control effect on the cleaning motion of the electric toothbrush and improve the user experience.

[0007] At the same time, the motion detection component composed of the motion detection component and the motion feedback component is installed in the accommodating chamber. In other words, the motion detection component is built into the driving body, avoiding the formation of an outward-expanding structure outside the driving body, so that the overall size of the driving device can be reduced, and a more compact miniaturized design is achieved. When the driving device is applied to oral cleaners such as electric toothbrushes and all-in-one flushing machines, the compact structure of the present application can not only make the oral cleaner thinner to optimize the aesthetics of the electric toothbrush, but also leave a larger water storage space inside the oral cleaner to accommodate more flushing liquid, thereby enhancing the overall functionality of the product.

[0008] Optionally, the mounting bracket has an annular support base; the support base is connected to the outer shell and extends along the first axis, the motion detection component is installed at one end of the support base, and the motion feedback component is at least partially located in the area surrounded by the support base.

[0009] Optionally, the mounting bracket has a ring-shaped support base; the mounting bracket also has an inner support platform; the inner support platform is connected to the support base and extends inward from the inner wall surface of the support base, and the side of the inner support platform away from the motion feedback component forms a first support surface, and the motion detection component is supported on the first support surface and connected to the inner support platform through fasteners.

[0010] Optionally, a first limiting portion is provided on the first supporting surface, and a second limiting portion is provided on the motion detection assembly, and the first limiting portion cooperates with the second limiting portion to limit the position of the motion detection assembly on the mounting bracket.

[0011] Optionally, the support seat has an inner step surface, which is flush with the first support surface, and the inner step surface divides the inner wall surface of the support seat into a first inner wall surface and a second inner wall surface arranged along the first axis, and the second inner wall surface is located on the side of the inner step surface adjacent to the motion detection component; the motion feedback component is at least partially located in the area surrounded by the first inner wall surface, and the second inner wall surface is adapted to the outer wall surface of the motion detection component.

[0012] Optionally, the driving body further includes a stator element accommodated in the accommodating chamber; the stator element is fixedly connected to the outer shell, and the motion detection component is located at one end of the stator element adjacent to the tail cover.

[0013] Optionally, the motion detection assembly is located at an end of the support base away from the stator element, and the motion feedback assembly is located between the motion detection assembly and the stator element.

[0014] Optionally, a buckle is provided at one end of the support seat away from the stator element; a slot is provided at one end of the outer shell adjacent to the tail cover, and the support seat is connected to the outer shell through the cooperation of the buckle and the slot.

[0015] Optionally, the rotating component includes a power output shaft and a rotor element, the power output shaft is rotatably mounted on the housing element, and the rotor element is fixedly connected to the power output shaft; the motion feedback component is fixedly connected to the power output shaft, the rotor element, the motion feedback component and the motion detection component are spaced apart along the extension direction of the first axis, and the motion feedback component is located between the rotor element and the motion detection component.

[0016] Optionally, the motion feedback assembly includes a mounting seat and a position feedback member, wherein the mounting seat has a sleeve and a support backplate, the sleeve is fixedly mounted on the power output shaft, the support backplate is located at the end of the sleeve away from the motion detection assembly, and the support backplate extends radially outward from the outer wall surface of the sleeve to form a ring shape; the ring-shaped position feedback member is fixedly mounted on the sleeve, and the position feedback member is fitly connected to the support backplate on the side away from the motion detection assembly.

[0017] Optionally, the rotor element includes a rotor core and a plurality of magnets, wherein the rotor core is fixedly mounted on the power output shaft, the plurality of magnets are mounted on the rotor core, and the plurality of magnets are arranged in a circular array around the power output shaft; viewed from a cross-section perpendicular to the first axis, the thickness of the magnet decreases gradually from the middle of the magnet to both ends.

[0018] To achieve the above-mentioned purpose, the present application also provides a brush handle assembly on the other hand, which includes at least a grip shell, an energy storage component installed in the grip shell, and the above-mentioned drive device for oral cleaning; the energy storage component is electrically connected to the drive device, and the power output shaft of the drive device extends out of the grip shell.

[0019] Optionally, the power output shaft has an axial passage, and a fluid inlet and a fluid outlet communicating with the axial passage.

[0020] To achieve the above-mentioned purpose, the present application further provides an oral cleaner on the other hand, which comprises at least a care head and the above-mentioned brush handle assembly, and the care head is detachably connected to the power output shaft.

[0021] To achieve the above-mentioned purpose, the present application also provides an oral cleaner on the other hand, which includes at least a care head and the above-mentioned brush handle assembly; the care head has a fluid channel and a flow outlet connected to the fluid channel, the power output shaft is connected to the care head and drives the care head to perform displacement movement, and the fluid outlet of the axial channel is connected to the fluid channel, and the oral cleaner outputs water flow impact through the flow outlet. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0023] Figure 1 is an axonometric schematic diagram of a driving device in one embodiment provided by the present application;

[0024] Figure 2 This is an exploded schematic diagram of a driving device in one embodiment provided by the present application;

[0025] Figure 3 is a half-section schematic diagram of a driving device in one embodiment provided in the present application;

[0026] Figure 4 yes Figure 3 A magnified view of some structures in ;

[0027] Figure 5 This is a schematic structural diagram of an installation bracket in an embodiment provided by the present application;

[0028] Figure 6This is a partial structural diagram of a driving device in one embodiment provided by the present application;

[0029] Figure 7 This is a schematic structural diagram of an outer shell in one embodiment provided by the present application;

[0030] Figure 8 This is a schematic structural diagram of a rotation component and a motion feedback component connected in one embodiment provided by the present application;

[0031] Figure 9 This is an exploded schematic diagram of a motion feedback component in one embodiment provided by the present application;

[0032] Figure 10 is a three-dimensional schematic diagram of a rotating assembly in one embodiment provided in the present application;

[0033] Figure 11 is a schematic diagram of a brush handle assembly in one embodiment provided in the present application;

[0034] Figure 12 Schematic diagram of an oral cleaner according to an embodiment of the present application.

[0035] Description of reference numerals:

[0036] 110. First axis; 120. Accommodating chamber;

[0037] 200, stationary component; 210, housing component; 211, housing; 2111, slot; 212, tail cover; 220, stator component;

[0038] 300, rotating assembly; 310, power output shaft; 311, axial channel; 320, rotor element; 321, rotor core; 322, magnet;

[0039] 400, motion detection component; 410, second limiting portion;

[0040] 500, motion feedback assembly; 510, mounting seat; 511, sleeve; 512, support back plate; 520, position feedback member;

[0041] 600, mounting bracket; 610, support base; 611, inner step surface; 612, first inner wall surface; 613, second inner wall surface; 620, inner support platform; 621, first supporting surface; 622, first limiting portion; 630, buckle; 640, fastener;

[0042] 710. Grip shell; 720. Energy storage component; 730. Liquid storage chamber; 740. Fluid pumping unit; 750. Care head; 751. Fluid channel; 752. Outlet. DETAILED DESCRIPTION

[0043] As people's living standards improve, more and more families are turning to various oral cleaning devices, such as electric toothbrushes, oral irrigators, and integrated toothbrushes, to assist with cleaning and improve the oral environment. For example, in related technologies, electric toothbrushes are connected to the brush head via a drive shaft within their internal motor, enabling the brush head to oscillate back and forth, improving cleaning efficiency.

[0044] However, most electric toothbrushes in the related art use ordinary motors to achieve oscillating motion. Ordinary motors usually move at a set number of oscillation frequencies / amplitudes and cannot provide more desired vibrations. Compared to ordinary motors, the advantages of motors with Hall sensors are that they can achieve high-precision and high-repeatability position, speed, and torque control, have fast dynamic response and tracking performance, can reach the set speed in a very short time and accurately track instructions, and can achieve smooth speed regulation within a wide speed range. Therefore, this application uses a motor with Hall sensors as the power part of the oral cleaner, thereby improving the user experience.

[0045] However, the addition of Hall effect sensors to the motor requires precise control instructions and feedback signals to achieve the above effects. The related motor's motion detection components have complex mounting structures and lack precision, resulting in inaccurate instructions and feedback signals, which in turn leads to poor motor control and, consequently, poor control of the cleaning motion of the motor-driven electric toothbrush.

[0046] Specifically, when conducting an in-depth study of the installation structure of the relevant motion detection components, the inventors noticed that the circuit board with the Hall sensor installed needs to be installed on a special bracket first, and then installed on the tail cover through the special bracket, and the tail cover needs to be installed on the motor housing. This design requires three precise assembly operations between the motor housing and the special bracket for installing the circuit board to ensure the accuracy of the circuit board. At the same time, due to the dimensional tolerances in the processing of each component, this double assembly method further increases the overall assembly error of the system, thereby affecting the control effect of the cleaning motion of the electric toothbrush. In addition, the inventors also observed that in the related art, the Hall sensor circuit board and the magnetic ring are externally fixed to the motor housing, which seriously increases the volume of the entire motor component, thereby increasing the volume of the electric toothbrush on which the motor component is installed. This not only affects the aesthetics of the electric toothbrush, but may also have an adverse effect on its portability.

[0047] Based on this, the present application redesigns the installation position and installation method of the Hall sensor circuit board and the magnetic ring. Specifically, the design connects the Hall sensor circuit board directly to the motor housing through a mounting bracket. This structure simplifies the assembly process, significantly reduces the assembly complexity and improves the assembly accuracy. This change ensures the precise placement of the Hall sensor circuit board, which helps to improve the motion control effect. At the same time, the Hall sensor circuit board and the magnetic ring are built into the motor assembly to avoid the expansion of the external structure, so that the overall size of the motor can be reduced and a more compact miniaturized design can be achieved. This compact structure not only makes the electric toothbrush thinner to optimize the aesthetics of the electric toothbrush, but also leaves a larger water storage space inside the electric toothbrush to accommodate more flushing liquid, thereby enhancing the overall functionality of the product.

[0048] In addition, some people expect to use an oral irrigator or dental floss in combination with a toothbrush to solve the inconvenience of using an oral irrigator and an electric toothbrush separately when caring for the oral cavity.

[0049] To this end, the present application has made a further improvement to the design of the motor assembly. Specifically, the power output shaft of the motor assembly is designed to be a hollow structure, so that it can transmit power and serve as a flow channel for liquid and transmit the liquid to the brush head, thereby realizing the mechanical transmission of a device with both flushing and brushing functions. At the same time, it can be understood that the above-mentioned method of integrating the Hall sensor circuit board and the magnetic ring into the motor assembly can also facilitate the connection between the tail end of the power output shaft and the upstream pipe fitting, avoiding the interference of the external Hall sensor circuit board and the magnetic ring on the related connection operations.

[0050] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments.

[0051] The present application provides a driving device that can be used for oral cleaning. For example, the driving device can be used as a power source and applied to an electric toothbrush or an all-in-one toothbrush to drive the brush head of the electric toothbrush or the all-in-one toothbrush to vibrate and / or oscillate at high frequencies to improve cleaning efficiency. Of course, the driving device can also be applied to other cleaning devices that require high-frequency vibration and / or reciprocating oscillation, and this application does not specifically limit this.

[0052] For details, please refer to Figures 1 to 3In one feasible embodiment, the drive device may include at least a drive body. The drive body is used to convert electrical energy into mechanical energy to output high-frequency vibration and / or reciprocating oscillation. The drive body may be constructed in a cylindrical shape, with the first axis 110 being the centerline of the drive body. That is, the center point of each cross-section of the drive body may be located on the first axis 110, and the drive body extends along the first axis 110. The drive body may include a stationary component 200 and a rotating component 300. When the drive body is in operation, the stationary component 200 remains relatively stationary, while the rotating component 300 rotates relative to the stationary component 200, thereby driving the corresponding accessory to move. The stationary component 200 may include at least a housing element 210, and the rotating component 300 is rotatably mounted within the housing element 210. At least one end of the rotating component 300 extends along the first axis 110 and extends to the outside of the housing element 210 for connection to other accessories. The housing element 210 may include an outer shell 211 and a tail cover 212. The tail cover 212 is disposed at one end of the outer shell 211 along the first axis 110 . The outer shell 211 and the tail cover 212 surround and form a receiving chamber 120 .

[0053] In this embodiment, the drive device also includes a motion detection component, which is at least partially located in the accommodating chamber 120. The motion detection component can be used to detect the rotational speed, angle, torque of the rotating component 300 relative to the static component 200, and / or detect the rotational position of the rotating component 300 to perform a reversing operation, thereby controlling the rotating component 300 to rotate in the opposite direction at a preset position. The motion detection component includes a motion detection component 400 and a motion feedback component 500. The motion feedback component 500 is connected to the rotating component 300 and rotates with the rotating component 300. The motion detection component 400 is directly connected to the outer shell 211 via the mounting bracket 600. In this way, the motion detection component 400 can determine the position of the rotating component 300 by detecting the position of the motion feedback component 500, thereby realizing the above-mentioned detection function. In actual applications, the motion detection component 400 may include a circuit board and a position sensor integrated on the circuit board, wherein the position sensor may be a laser sensor or a Hall sensor, etc., which is not specifically limited in this application. The motion detection component 400 can be connected to the control component outside the accommodating chamber 120 through a wiring harness such as a wire or an FPC connecting wire.

[0054] In actual use, the outer shell 211 is constructed as a cylindrical structure. The axis of the outer shell 211 can be collinear with the first axis 110. An opening is formed at one end of the outer shell 211 to facilitate installation of the stator element, the rotating assembly 300, and the motion detection component into the outer shell 211 through the opening. The tail cover 212 is connected to the outer shell 211 and at least partially covers the opening. After the stator element, the rotating assembly 300, and the motion detection component are installed into the outer shell 211 through the opening, the tail cover 212 can at least partially seal the opening to prevent foreign objects from entering the interior of the outer shell 211 and affecting the normal operation of the drive device.

[0055] It is worth mentioning that, compared to the related art which first connects the tail cover 212 to the outer shell 211 and then connects the motion detection assembly 400 to the tail cover 212 through the corresponding support, which requires three positioning and assembly processes, the present application connects the motion detection assembly 400 in the drive device directly to the outer shell 211 through the mounting bracket 600, so that the motion detection assembly 400 only needs two positioning and installation operations to complete the positioning and assembly, which simplifies the assembly process, significantly reduces the assembly complexity, and solves the problem of large differences in assembly accuracy caused by multiple assemblies. When the drive device is used in oral cleaners such as electric toothbrushes and all-in-one flushing machines, the modified solution of the present application can greatly improve the consistency of the assembly accuracy of the motion detection assembly 400, thereby helping to provide a control effect on the cleaning motion of the electric toothbrush and improving the user experience.

[0056] At the same time, the motion detection component composed of the motion detection component 400 and the motion feedback component 500 is installed in the accommodating chamber 120. In other words, the motion detection component is built into the driving body, avoiding the formation of an outward-expanding structure outside the driving body, so that the overall size of the driving device can be reduced, and a more compact miniaturized design is achieved. When the driving device is applied to oral cleaners such as electric toothbrushes and all-in-one flushing machines, the compact structure of the present application can not only make the oral cleaner thinner to optimize the aesthetics of the electric toothbrush, but also leave a larger water storage space inside the oral cleaner to accommodate more flushing liquid, thereby enhancing the overall functionality of the product.

[0057] Regarding the specific structure of the mounting bracket 600, as shown in FIG. Figure 4 and Figure 5As shown, in one feasible embodiment, the mounting bracket 600 has an annular support base 610. The support base 610 is connected to the outer shell 211 and extends along the first axis 110. The motion detection assembly 400 is mounted on one end of the support base 610. The motion feedback assembly 500 may be partially or completely located in the area surrounded by the support base 610, that is, the motion feedback assembly 500 is located in the inner cavity of the support base 610, or in other words, the motion feedback assembly 500 and the support base 610 are at least partially overlapped on the first axis 110. In this way, the motion detection assembly 400 and the motion feedback assembly 500 do not need to be separated by the thickness of the entire support base 610, which can reduce the distance between the motion detection assembly 400 and the motion feedback assembly 500, improve the detection accuracy, and also make the structure of the drive device more compact, further achieving the purpose of miniaturization. Accordingly, the distance between the motion detection component 400 and the motion feedback component 500 does not need to be limited by the thickness of the support base 610. The thickness of the support base 610 can also be increased accordingly to increase the contact area between the support base 610 and the inner wall of the outer shell 211, thereby improving the installation stability of the support base 610 in the outer shell 211.

[0058] In order to facilitate the installation of the motion detection assembly 400 on the support base 610, as shown in FIG. Figure 5 As shown, in one feasible embodiment, the mounting bracket 600 further includes an inner support platform 620. The inner support platform 620 is adjacent to the support base 610 and extends inward from the inner wall surface of the support base 610. A first support surface 621 is formed on a side of the inner support platform 620 away from the motion feedback assembly 500. The motion detection assembly 400 is supported on the first support surface 621 and connected to the inner support platform 620 via a fastener 640.

[0059] In this embodiment, the first support surface 621 can be perpendicular to the first axis 110. In this way, when the motion detection component 400 is installed on the inner support platform 620, the contact surface between the first support surface 621 and the motion detection component 400 can be fully in contact, thereby improving the support stability of the inner support platform 620 on the motion detection component 400.

[0060] The internal support platform 620 may be one or more, for example, two, three, or four. To further improve the stability of the internal support platform 620 in supporting the motion detection assembly 400 and prevent the motion detection assembly 400 from shaking and affecting its detection accuracy, the present application preferably uses multiple internal support platforms 620, so that the motion detection assembly 400 is supported by multiple internal support platforms 620. Furthermore, the multiple internal support platforms 620 can be arranged in a circular array along the axis of the support base 610 to provide more uniform and stable support.

[0061] In practical applications, the fastener 640 can be a screw. Accordingly, a threaded hole is provided on the first support surface 621 of the inner support platform 620, and a clearance hole is provided on the motion detection assembly 400. The screw passes through the clearance hole and is threadedly connected to the threaded hole, thereby fixing the motion detection assembly 400 to the inner support platform 620. The inner support platform 620 and the support base 610 can be integrally formed by methods such as injection molding, die casting, and machining, thereby simplifying the production process and improving processing accuracy. Of course, the inner support platform 620 and the support base 610 can also be designed separately and then connected to each other, and this application does not specifically limit this.

[0062] like Figure 5 and Figure 6 As shown, in one feasible embodiment, a first position-limiting portion 622 is provided on the first support surface 621, and a second position-limiting portion 410 is provided on the motion detection assembly 400. The first position-limiting portion 622 cooperates with the second position-limiting portion 410 to limit the position of the motion detection assembly 400 on the mounting bracket 600. In other words, the motion detection assembly 400 can first be positioned and mounted on the mounting bracket 600 by cooperating with the first position-limiting portion 622 and the second position-limiting portion 410, and then connected via the fastener 640, thereby improving the relative position accuracy of the motion detection assembly 400 and the motion feedback assembly 500, thereby improving the accuracy of system control.

[0063] In practical applications, the first limiting portion 622 can be implemented as either a positioning pin or a positioning hole, and correspondingly, the second limiting portion 410 can be implemented as either a positioning pin or a positioning hole. However, considering that the circuit board structure of the motion detection assembly 400 is not convenient for adding raised portions, it is preferred that the first limiting portion 622 be a positioning pin and the second limiting portion 410 be a positioning hole. When the motion detection assembly 400 is connected to the inner support 620, the positioning pin enters the positioning hole, thereby limiting the circumferential and radial movement of the motion detection assembly 400.

[0064] Furthermore, the support base 610 may further include an inner stepped surface 611, which is flush with the first supporting surface 621. Thus, when the motion detection assembly 400 is mounted on the mounting bracket 600, the inner stepped surface 611 and the first supporting surface 621 can jointly support the motion detection assembly 400, thereby improving the installation stability of the motion detection assembly 400.

[0065] At the same time, the inner step surface 611 also divides the inner wall surface of the support seat 610 into a first inner wall surface 612 and a second inner wall surface 613 arranged along the first axis 110, wherein the second inner wall surface 613 is located on the side of the inner step surface 611 adjacent to the motion detection component 400, the motion feedback component 500 is at least partially located in the area surrounded by the first inner wall surface 612, and the motion detection component 400 is at least partially located in the area surrounded by the second inner wall surface 613, and the second inner wall surface 613 is adapted to the outer wall surface of the motion detection component 400, so that the motion detection component 400 can be positioned and installed by abutting and matching between its outer wall surface and the second inner wall surface 613, so that the motion detection component 400 can be installed by double positioning, further improving the accuracy of the relative position of the motion detection component 400 and the motion feedback component 500.

[0066] Considering that the rotating assembly 300 needs to extend from the stator element 220 and be rotatably connected to both ends of the housing element 210, the motion detection assembly 400 also needs to be provided with an escape space formed by the inner circumferential wall of the motion detection assembly 400. When the motion detection assembly 400 is installed in the housing element 210 via the support base 610, the axis of the escape space is substantially collinear with the axis of the rotating assembly 300, allowing at least a portion of the rotating assembly 300 to extend through the escape space, through the motion detection assembly 400, and to the end of the housing element 210.

[0067] like Figure 5 As shown, in one feasible embodiment, the first inner wall surface 612 may further be provided with a support structure, such as a support ring. The support ring improves the overall strength of the support base 610, prevents the support base 610 from being damaged by pressure, and increases its service life. Furthermore, the internal hole of the support ring can also make way for the rotating assembly 300, so that at least a portion of the rotating assembly 300 can pass through the internal hole of the support ring and extend to the end of the housing element 210.

[0068] The static component 200 of the driving body may further include a stator element 220 , which is accommodated in the accommodation chamber 120 and fixedly connected to the outer shell 211 , so that when the driving device is running, the stator element 220 follows the outer shell element 210 and remains stationary.

[0069] In practical applications, the stator element 220 and the outer shell 211 are connected along at least one end of the first axis 110 (eg Figure 3212 ) is located at an end of the stator element 220 along the first axis 110. In other words, the motion detection component can be located at an end of the stator element 220 adjacent to the tail cover 212, or the motion detection component can be located at an end of the stator element 220 away from the tail cover 212. However, considering that the motion detection assembly 400 in the motion detection component has a wiring harness that needs to extend to the outside, the present application preferably arranges the motion detection component at an end of the stator element 220 adjacent to the tail cover 212, so that the wiring harness can be easily extended through the connection gap between the tail cover 212 and the outer shell 211, and the subsequent description will be based on this.

[0070] Regarding the arrangement of the motion detection component 400 and the motion feedback component 500 in the motion detection part, in one feasible embodiment, the motion detection component 400 is located at one end of the support base 610 adjacent to the stator element 220, and the motion detection component 400 is located between the motion feedback component 500 and the stator element 220.

[0071] Of course, if Figure 4 As shown, in another optional embodiment, the motion detection assembly 400 can also be located at the end of the support base 610 away from the stator element 220, and the motion feedback assembly 500 is located between the motion detection assembly 400 and the stator element 220. In this way, the motion detection assembly 400 is disposed closer to the tail cover 212, thereby further facilitating the extension of the wiring harness through the connection gap between the tail cover 212 and the outer shell 211.

[0072] The support base 610 can be connected to the outer shell 211 by means of interference fit, gluing or snap connection. Figures 5 to 7 As shown, in one feasible embodiment, a buckle 630 is provided at one end of the support base 610 away from the stator element 220, and a slot 2111 is provided at one end of the outer shell 211 adjacent to the tail cover 212. The support base 610 is connected to the outer shell 211 through the engagement of the buckle 630 and the slot 2111. In actual application, there may be multiple slots 2111, and accordingly, there may also be multiple buckles 630. The multiple buckles 630 correspond to the multiple slots 2111 and engage with each other in a one-to-one manner, thereby enhancing the stability of the connection between the support base 610 and the outer shell 211.

[0073] Please also see Figure 3 and Figure 8In one embodiment, the rotating assembly 300 may include a power output shaft 310 and a rotor element 320. The power output shaft 310 is rotatably mounted on the housing element 210, and the rotor element 320 is fixedly connected to the power output shaft 310. When the rotor element 320 rotates in response to the interaction between the current and the magnetic field, the rotor element 320 drives the power output shaft 310 to rotate. The motion feedback assembly 500 is fixedly connected to the power output shaft 310 so that the motion feedback assembly 500 rotates in accordance with the rotation of the power output shaft 310. Thus, the motion detection assembly 400 can determine the motion position of the rotor element 320 by detecting the motion position of the motion feedback assembly 500. The rotor element 320, the motion feedback assembly 500, and the motion detection assembly 400 are spaced apart along the direction in which the first axis 110 extends. The motion feedback assembly 500 can be located between the motion detection assembly 400 and the tail cover 212, or between the motion detection assembly 400 and the rotor element 320.

[0074] Please also see Figure 8 and Figure 9 In one feasible embodiment, the motion feedback assembly 500 includes a mounting base 510 and a position feedback member 520. The motion detection assembly 400 is used to detect the motion position of the position feedback member 520. The mounting base 510 includes a sleeve 511 and a support back plate 512. The sleeve 511 is fixedly mounted on the power output shaft 310 to rotate with the power output shaft 310. The position feedback member 520 is annular and fixedly mounted on the sleeve 511. Therefore, the position feedback member 520 can rotate with the power output shaft 310 through the mounting base 510.

[0075] Furthermore, the mounting seat 510 can also have a support backplate 512, which is located at one end of the sleeve 511 away from the motion detection component 400, and the support backplate 512 extends radially outward from the outer wall surface of the sleeve 511 to form a ring shape. The side of the position feedback component 520 away from the motion detection component 400 is fitly connected to the support backplate 512, thereby increasing the connection area between the mounting seat 510 and the position feedback component 520, and improving the installation stability of the position feedback component 520.

[0076] It is worth noting that the use of mounting bracket 510 to mount position feedback member 520 on power output shaft 310 improves the installation stability of position feedback member 520 and reduces the pressure on position feedback member 520 during installation, thereby preventing damage to position feedback member 520 or unstable movement. Due to the improved installation and structural stability of position feedback member 520, the reliability of the position detection results of position feedback member 520 by motion detection assembly 400 is improved, thereby improving the control effect of brush head swing process.

[0077] In practical applications, the mounting base 510 can be a plastic part or a metal part, such as a copper part, to improve the structural strength of the mounting base 510 and the connection stability between the mounting base 510 and the power output shaft 310. The mounting base 510 and the power output shaft 310 can be connected to each other by key connection, bonding, welding, shrink fitting, or shrink fitting, etc., which is not specifically limited in this application.

[0078] In one implementation, a Hall sensor is integrated on the circuit board of the motion detection component 400. Accordingly, the position feedback component 520 is a magnetic component. The motion detection component 400 detects the motion position of the position feedback component 520 by magnetic induction to determine the motion position of the rotor element 320, thereby improving the reliability of the detection results.

[0079] In actual applications, the position feedback member 520 has at least two opposite magnetic poles. Accordingly, two Hall sensors are integrated on the circuit board of the motion detection component 400. The two Hall sensors are arranged at circumferential intervals along the first axis 110, and the two Hall sensors are used to sense the two opposite magnetic poles of the position feedback member 520. The position feedback member 520 can be formed by connecting two magnets with different magnetic poles, or by magnetizing the same magnet to form two different magnetic poles. There is no limitation here, as long as the magnetic member has two opposite magnetic poles. The two Hall sensors are installed corresponding to the two preset positions of the position feedback member 520 respectively. The position feedback member 520 can be detected by the corresponding Hall sensor at any preset position, so that the circuit board can control the power output shaft 310 to rotate back and forth between the two preset positions of the position feedback member 520.

[0080] In one practicable embodiment, the distance between the motion detection assembly 400 and the position feedback element 520 ranges from 1 mm to 3 mm. This allows the position feedback element 520 to be detected by the Hall effect sensor on the motion detection assembly 400, while also preventing the motion detection assembly 400 from being disturbed by the magnetic field of the rotor element 320. This provides a clear output signal and ensures effective control of the drive device.

[0081] In one feasible embodiment, the rotor element 320 may include a rotor core 321 and a plurality of magnets 322, wherein the rotor core 321 is fixedly mounted on the power output shaft 310, the plurality of magnets 322 are mounted on the rotor core 321, and the plurality of magnets 322 are arranged in a circular array around the power output shaft 310. From a section perpendicular to the first axis 110, or in other words, from a cross-section, the thickness of the magnet 322 decreases from the middle to the ends of the magnet 322, thereby forming magnets with unequal thickness and non-uniform distribution. In this way, the unequal thickness design of the magnet 322 can reduce the circumferential force of the rotor element 320, reduce the cogging torque of the motor, thereby reducing the overall noise, reducing the torque fluctuation, reducing the eddy current and hysteresis loss caused by the alternating magnetic potential, and reducing the current fluctuation.

[0082] The magnet 322 may be a permanent magnet for generating a rotor magnetic field. The stator element 220 generates a stator magnetic field by energizing the stator element 220. The interaction between the stator magnetic field and the rotor magnetic field generates a torque that attempts to align the rotor magnetic field with the stator magnetic field, thereby continuously "pulling" the rotor element to rotate.

[0083] Please see again Figure 3 As shown, in an achievable embodiment, the housing element 210 of the stationary component 200 has two ends (such as Figure 3 Bearings are mounted on the left and right ends of the rotating assembly 300. The power take-off shaft 310 of the rotating assembly 300 is rotatably connected to the housing element 210 via these two bearings. The rotor element 320 of the rotating assembly 300 is located within the stationary assembly 200. A tensioning member is sleeved on the power take-off shaft 310. The tensioning member has elastic properties and is compressed between the rotor element 320 and one of the bearings. The elastic properties of the tensioning member provide the necessary preload to maintain a tight fit between the bearing and the rotor element 320, reducing axial movement, preventing any impact on the detection effect of the motion detection component, and improving the operating accuracy of the drive device.

[0084] In practical applications, the tensioning member may be an elastic structure such as a spring or a rubber sleeve, and this application does not make any specific limitations on this.

[0085] Furthermore, the tensioning element and motion detection component can be located at opposite ends of the rotor element 320 along the first axis 110. This distributed layout allows for rational and optimal utilization of the drive mechanism's internal space. Furthermore, arranging the tensioning element and motion detection component at opposite ends of the first axis 110 helps reduce potential electromagnetic interference from the tensioning element on the detection accuracy of the motion detection unit.

[0086] In one feasible embodiment, the power output shaft 310 may have an axial channel 311 extending along the first axis 110. The axis of the power output shaft 310 or the axial channel 311 is parallel, substantially parallel, or coincident with the first axis 110. The power output shaft 310 is provided with a fluid inlet and a fluid outlet communicating with the axial channel 311. Thus, when the drive device is used in an oral cleaner such as an electric toothbrush, the power output shaft 310 of the drive device can transmit power to drive the brush head to oscillate, and can also serve as a liquid flow channel to transfer the liquid to the brush head, thereby achieving both rinsing and brushing functions, thereby satisfying the user's desire to use the irrigator in combination with a toothbrush.

[0087] In practical applications, the fluid inlet and the fluid outlet are usually located at both ends of the power output shaft 310 , and their opening directions can be toward the circumferential surface or end surface of the power output shaft 310 .

[0088] like Figure 11 As shown, based on the same inventive concept, this application also provides a brush handle assembly. Specifically, the brush handle assembly may include at least a grip housing 710, an energy storage component 720 mounted within the grip housing 710, and the aforementioned drive device for oral cleaning. The energy storage component 720 is electrically connected to the drive device, and the power output shaft 310 of the drive device extends out of the grip housing 710.

[0089] In practical applications, to facilitate user gripping, the grip housing 710 may be shaped like an elongated body, and the cross-sectional shape of the grip housing 710 may be circular or non-circular (e.g., D-shaped, elliptical, polygonal, etc.). The specific structure of the energy storage component 720 can refer to existing batteries and will not be described in detail here.

[0090] In one practicable embodiment, the handle assembly can be used in an oral cleaner, such as an electric toothbrush, as both the power unit and the grip. When used in an oral cleaner, the power output shaft 310 of the handle assembly is detachably connected to a care head 750 (e.g., an accessory with bristles, such as a toothbrush head), so that the power output shaft 310 drives the care head 750 to move.

[0091] Further, such as Figure 3 and Figure 12As shown, the above-mentioned brush handle assembly can also integrate the swinging and flushing functions and be used in a flushing machine. Specifically, the brush handle assembly also includes a liquid storage chamber 730 and a fluid pumping unit 740 located in the gripping shell 710. Or the liquid storage chamber 730 and the fluid pumping unit 740 are placed outside the main machine that is in fluid communication with the brush handle assembly. The power output shaft 310 has an axial channel 311, and a fluid inlet and a fluid outlet that are in communication with the axial channel 311. The fluid inlet of the axial channel 311 can be in communication with the liquid storage chamber 730, and the fluid pumping unit 740 is connected in series to the flow channel connecting the fluid inlet of the axial channel 311 and the liquid storage chamber 730, so that the fluid pumping unit 740 can extract the fluid in the liquid storage chamber 730 and let the fluid flow out from the fluid outlet of the axial channel 311 through the axial channel 311.

[0092] In one feasible embodiment, the brush handle assembly can be applied to an oral cleaner such as an all-in-one irrigator. When the brush handle assembly is applied to the oral cleaner, the care head 750 of the oral cleaner (such as an all-in-one irrigator or an accessory with bristles) has a fluid channel 751 and an outflow port 752 connected to the fluid channel 751. The power output shaft 310 is connected to the care head 750 and drives the care head 750 to perform displacement movement, and the fluid outlet of the axial channel 311 is connected to the fluid channel 751. The oral cleaner outputs water flow impact through the outflow port 752.

[0093] Among them, the terms "upper" and "lower" are used to describe the relative position relationship of each structure in the accompanying drawings, which is only for the convenience of description and is not used to limit the scope of implementation of this application. Changes or adjustments to their relative relationships should also be regarded as the scope of implementation of this application without substantially changing the technical content.

[0094] It should be noted that, in this application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, a first feature being "above," "above," and "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is at a higher level than the second feature. A first feature being "below," "below," and "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0095] Furthermore, in this application, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connected," "fixed," and the like should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integration; they may refer to direct connection or indirect connection through an intermediate medium; they may refer to internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0096] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0097] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A driving device for oral cleaning, characterized in that: The driving device for oral cleaning comprises at least a driving body and a motion detection component, wherein: The driving body extending along the first axis (110) comprises a housing element (210) and a rotating assembly (300), wherein the rotating assembly (300) is rotatably mounted on the housing element (210), and at least one end of the rotating assembly (300) extends to the outside of the housing element (210) along the first axis (110). The housing element (210) comprises an outer shell (211) and a tail cover (212), wherein the tail cover (212) is provided at one end of the outer shell (211) along the first axis (110), and the outer shell (211) and the tail cover (212) are arranged to form a receiving chamber (120); The motion detection component at least partially located in the accommodating chamber (120) includes a motion detection component (400) and a motion feedback component (500), wherein the motion feedback component (500) is connected to the rotating component (300) and rotates with the rotating component (300), the motion detection component (400) is directly connected to the outer shell (211) through a mounting bracket (600), and the motion detection component (400) detects the motion position of the rotating component (300) through the motion feedback component (500).

2. The driving device for oral cleaning according to claim 1, characterized in that: The mounting bracket (600) has a ring-shaped support seat (610); The support base (610) is connected to the outer shell (211) and extends along the first axis (110), the motion detection component (400) is installed at one end of the support base (610), and the motion feedback component (500) is at least partially located in the area surrounded by the support base (610).

3. The driving device for oral cleaning according to claim 1, characterized in that: The mounting bracket (600) has a ring-shaped support seat (610); the mounting bracket (600) also has an inner support platform (620); The inner support platform (620) is connected to the support base (610) and extends inward from the inner wall surface of the support base (610). The side of the inner support platform (620) away from the motion feedback component (500) forms a first support surface (621). The motion detection component (400) is supported on the first support surface (621) and is connected to the inner support platform (620) via a fastener (640).

4. The driving device for oral cleaning according to claim 3, characterized in that: A first limiting portion (622) is provided on the first supporting surface (621), and a second limiting portion (410) is provided on the motion detection assembly (400). The first limiting portion (622) cooperates with the second limiting portion (410) to limit the position of the motion detection assembly (400) on the mounting bracket (600).

5. The driving device for oral cleaning according to claim 4, characterized in that: The support seat (610) has an inner step surface (611), the inner step surface (611) is flush with the first support surface (621), and the inner step surface (611) divides the inner wall surface of the support seat (610) into a first inner wall surface (612) and a second inner wall surface (613) arranged along the first axis (110), and the second inner wall surface (613) is located on a side of the inner step surface (611) adjacent to the motion detection assembly (400); The motion feedback component (500) is at least partially located within the area surrounded by the first inner wall surface (612), and the second inner wall surface (613) is adapted to the outer wall surface of the motion detection component (400).

6. The driving device for oral cleaning according to any one of claims 2 to 5, characterized in that: The driving body further includes a stator element (220) accommodated in the accommodation chamber (120); The stator element (220) is fixedly connected to the outer shell (211), and the motion detection component is located at one end of the stator element (220) adjacent to the tail cover (212).

7. The driving device for oral cleaning according to claim 6, characterized in that: The motion detection assembly (400) is located at one end of the support seat (610) away from the stator element (220), and the motion feedback assembly (500) is located between the motion detection assembly (400) and the stator element (200).

8. The driving device for oral cleaning according to claim 7, characterized in that: A buckle (630) is provided at one end of the support seat (610) away from the stator element (220); A snap-in slot (2111) is provided at one end of the outer shell (211) adjacent to the tail cover (212), and the support seat (610) is connected to the outer shell (211) through the engagement of the snap-in (630) and the snap-in slot (2111).

9. The driving device for oral cleaning according to claim 1, characterized in that: The rotating assembly (300) includes a power output shaft (310) and a rotor element (320), wherein the power output shaft (310) is rotatably mounted on the housing element (210), and the rotor element (320) is fixedly connected to the power output shaft (310); The motion feedback assembly (500) is fixedly connected to the power output shaft (310); the rotor element (320), the motion feedback assembly (500) and the motion detection assembly (400) are arranged at intervals along the extension direction of the first axis (110); and the motion feedback assembly (500) is located between the rotor element (320) and the motion detection assembly (400).

10. The driving device for oral cleaning according to claim 9, characterized in that: The motion feedback assembly (500) includes a mounting seat (510) and a position feedback member (520), wherein: The mounting seat (510) comprises a sleeve (511) and a support back plate (512), wherein the sleeve (511) is fixedly sleeved on the power output shaft (310), the support back plate (512) is located at an end of the sleeve (511) away from the motion detection assembly (400), and the support back plate (510) extends radially outward from the outer wall surface of the sleeve (511) to form a ring shape; The annular position feedback member (520) is fixedly sleeved on the sleeve (511), and the side of the position feedback member (520) away from the motion detection assembly (400) is in close contact with the support back plate (512).

11. The driving device for oral cleaning according to claim 9, characterized in that: The rotor element (320) includes a rotor core (321) and a plurality of magnets (322), wherein: The rotor core (321) is fixedly sleeved on the power output shaft (310), the plurality of magnets (322) are mounted on the rotor core (321), and the plurality of magnets (322) are arranged in a ring array around the power output shaft (310); Viewed from a cross section perpendicular to the first axis (110), the thickness of the magnet (322) decreases gradually from the middle to both ends of the magnet (322).

12. A brush handle assembly, characterized in that: The brush handle assembly comprises at least a grip shell (710), an energy storage component (720) installed in the grip shell (710), and a driving device for oral cleaning according to any one of claims 1 to 11; The energy storage component (720) is electrically connected to the driving device, and the power output shaft (310) of the driving device extends out of the gripping housing (710).

13. The brush handle assembly according to claim 12, characterized in that: Therefore, the power output shaft (310) has an axial channel (311), and a fluid inlet and a fluid outlet communicating with the axial channel (311).

14. An oral cleaner, characterized in that: The oral cleaner comprises at least a care head (750) and the brush handle assembly according to claim 12, and the care head (750) is detachably connected to the power output shaft (310).

15. An oral cleaner, characterized in that: The oral cleaner comprises at least a care head (750) and the brush handle assembly according to claim 13; The care head (750) has a fluid channel (751) and a flow outlet (752) connected to the fluid channel (751), the power output shaft (310) is connected to the care head (750) and drives the care head (750) to perform displacement movement, and the fluid outlet of the axial channel (311) is connected to the fluid channel (751), and the oral cleaner outputs water flow impact through the flow outlet (752).

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