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

Abstract

The utility model discloses a driving device 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 extending along a first axis comprises a static component and a rotating component, the rotating component is rotatably mounted on the static component, and the motion detection component is mounted on the rotating component. The static assembly at least partially surrounds the rotating assembly, and a containing cavity is formed in the static assembly; the motion detection part 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 and rotates along with the rotating assembly, and the motion detection assembly is directly connected with the static assembly and rotates along with the static assembly. The motion detection assembly detects the motion position of the rotating assembly through the motion feedback assembly. The control effect of 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 cleaning device for oral cleaning. Background Art

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

[0003] However, the motor components of electric toothbrushes usually move at several set vibration frequencies and / or vibration amplitudes, and cannot provide more desired vibrations. The motor components can control the movement of the output shaft by setting a motion detection component, but the installation structure of the motion detection component in the prior art is complex and the installation accuracy is insufficient, resulting in poor control of the brush head assembly, which will have a certain adverse effect on the teeth cleaning effect and oral health. Utility Model Content

[0004] The purpose of the present application is to provide a driving 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, the driving device for oral cleaning comprising at least a driving body and a motion detection component, wherein the driving body extending along a first axis comprises a stationary component and a rotating component, the rotating component is rotatably installed on the stationary component, the stationary component at least partially surrounds the rotating component, the stationary component is formed with a accommodating chamber, at least one end of the rotating component extends along the first axis and extends to the outside of the stationary component; 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 stationary component, and the motion detection component detects the movement position of the rotating component through the motion feedback component.

[0006] Compared with the related art in which the motion detection component is connected to the stationary component through the corresponding support and requires two positioning and assembly processes, the technical solution provided by the present application directly connects the motion detection component in the driving device with the stationary component, so that the motion detection component can be positioned and assembled with only one positioning and installation operation, 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 driving device is used in oral cleaners such as electric toothbrushes and integrated flushing machines, the modified solution of the present application can greatly improve the assembly accuracy of the motion detection component, thereby ensuring the control accuracy of the driving device, improving the control effect of the oral cleaner, solving the problems of harm and discomfort caused by unstable movement or errors of the oral cleaner due to poor control effect, and improving 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 outwardly 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 integrated 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 liquids, thereby enhancing the overall functionality of the product.

[0008] Optionally, the stationary component includes a housing element and a stator element accommodated in the housing element; the stator element is fixedly connected to the housing element, and the motion detection component is located at one end of the stator element along the first axis.

[0009] Optionally, the housing element includes an outer shell and a back cover; the outer shell is constructed as a cylindrical structure, and an opening is formed at one end of the outer shell; the back cover is connected to the outer shell and at least partially covers the opening, and the motion detection component is located at one end of the stator element adjacent to the back cover.

[0010] Optionally, the housing element includes an outer shell and a back cover; the outer shell is constructed as a cylindrical structure, and an opening is formed at one end of the outer shell; the back cover is connected to the outer shell and at least partially covers the opening, and the motion detection component is located at one end of the stator element away from the back cover.

[0011] Optionally, the stator element includes a stator bracket, and the motion detection component is connected to the stator bracket or the outer shell.

[0012] Optionally, the stator element includes a stator bracket and a surface covering element; the surface covering element is at least partially covered on the stator bracket, and the motion detection component is connected to the surface covering element.

[0013] Optionally, the surface covering element extends along the first axis, and one end of the surface covering element extends to the outside of the stator bracket to form a connecting portion, so that the surface covering element is connected to the motion detection component through the connecting portion.

[0014] Optionally, a supporting surface for supporting the motion detection assembly and a positioning connector extending from the supporting surface in a direction away from the stator bracket are formed at one end of the connecting portion away from the stator bracket; a positioning hole adapted to the positioning connector is formed on the motion detection assembly, and when the motion detection assembly is positioned and installed to the connecting portion along the extension direction of the first axis through the positioning connector cooperating with the positioning hole, the motion detection assembly abuts against the supporting surface, and the portion of the positioning connector passing through the positioning hole is plastically deformed to form a blocking structure extending in a direction perpendicular to the first axis and abutting against the side of the motion detection assembly away from the supporting surface, so as to block the motion detection assembly from moving along the extension direction of the first axis.

[0015] Optionally, the portion of the positioning connector that passes through the positioning hole is plastically deformed by force or by thermal deformation and curing.

[0016] Optionally, there are at least two connecting parts, and the at least two connecting parts are arranged at circumferential intervals around the stator bracket; each of the connecting parts has a supporting surface for supporting the motion detection component formed at one end away from the stator bracket, and at least some of the connecting parts are provided with the positioning connecting piece extending from the supporting surface in a direction away from the stator bracket.

[0017] Optionally, viewed from a cross section of a straight line perpendicular to the first axis, before the positioning connector undergoes plastic deformation, the cross-sectional shape of the positioning hole and the positioning connector is the same and is at least one of circular, rectangular, fan-shaped and elliptical.

[0018] Optionally, the positioning hole is arranged adjacent to the outer peripheral wall of the motion detection component; the positioning hole is communicated with the outer peripheral wall of the motion detection component, and when the positioning connector is positioned and matched with the positioning hole, the positioning connector is roughly flush with the outer peripheral wall of the motion detection component, so that the projection of the motion detection component on the stator element along the first axis is located within the range of the stator element.

[0019] Optionally, the positioning hole is arranged adjacent to the outer peripheral wall of the motion detection assembly, and the positioning hole is not connected to the outer peripheral wall of the motion detection assembly.

[0020] Optionally, the inner circumferential wall of the motion detection component forms an avoidance space; when the motion detection component is connected to the connecting portion of the surface covering element, the axis of the avoidance space is colinear with the axis of the rotating component, so that the rotating component can at least partially extend from the stator element through the avoidance space.

[0021] Optionally, an elastic buckle and a support surface for supporting the motion detection component are formed at one end of the connecting portion away from the stator bracket; a through hole is formed on the motion detection component, and when the motion detection component is connected to the connecting portion along the extension direction of the first axis, the motion detection component squeezes the elastic buckle, and the elastic buckle generates elastic deformation and passes through the through hole, and after the elastic buckle passes through the through hole, the elastic buckle returns to its initial state to be buckled on the side of the motion detection component away from the support surface, and the motion detection component abuts against the support surface to prevent the motion detection component from moving along the extension direction of the first axis.

[0022] Optionally, the rotating component includes a power output shaft and a rotor element, the power output shaft is rotatably mounted on the stationary component, and the rotor element is fixedly connected to the power output shaft; the motion feedback component is fixedly connected to the power output shaft, and the rotor element, the motion feedback component and the motion detection component are spaced apart along the extension direction of the first axis, the motion feedback component is located between the rotor element and the motion detection component, or the motion feedback component is located on a side of the motion detection component away from the rotor element.

[0023] Optionally, the motion feedback component includes a mounting seat and a position feedback member; the mounting seat is provided with a connecting hole and a mounting groove, the mounting seat is fixedly sleeved on the power output shaft through the connecting hole, the mounting groove is provided on the peripheral side of the connecting hole, and the notch of the mounting groove is arranged toward the motion detection component; the position feedback member is installed in the mounting groove and rotates with the rotating component.

[0024] Optionally, the distance between the motion detection component and the position feedback component ranges from 1 mm to 3 mm.

[0025] Optionally, the mounting groove extends around the axis of the connecting hole to form a continuous ring, and the position feedback member is constructed as a ring structure to be adapted to be installed in the mounting groove.

[0026] Optionally, the outer circumferential wall of the mounting groove is provided with a limit block extending radially inward, and the outer circumferential wall of the position feedback member is formed with a limit groove adapted to the limit block; or, the inner circumferential wall of the mounting groove is provided with a limit groove extending radially inward, and the outer circumferential wall of the position feedback member is formed with a limit block adapted to the limit groove; or, the outer circumferential wall of the mounting groove is provided with a limit groove extending radially outward, and the outer circumferential wall of the position feedback member is formed with a limit block adapted to the limit groove; or, the inner circumferential wall of the mounting groove is provided with a limit block extending radially outward, and the outer circumferential wall of the position feedback member is formed with a limit groove adapted to the limit block.

[0027] Optionally, an anti-rotation groove is formed on the outer peripheral wall of the stator element of the stationary component, and the anti-rotation groove extends in a direction parallel to the first axis, and the anti-rotation groove passes through the opposite ends of the stator element along the first axis; an anti-rotation protrusion matched with the anti-rotation groove is formed on the inner peripheral wall of the outer shell of the stationary component, and when the stator element is positioned and installed in the outer shell through the anti-rotation groove and the anti-rotation protrusion, the anti-rotation groove and the anti-rotation protrusion cooperate to prevent the stator element from rotating relative to the outer shell.

[0028] Optionally, bearings are respectively installed at both ends of the housing element of the stationary component along the extension direction of the first axis; the power output shaft of the rotating component is rotatably connected to the housing element through the two bearings, the rotor element of the rotating component is located in the stationary component, and a tensioning member is sleeved on the power output shaft, the tensioning member has elastic properties, and the tensioning member is compressed and located between the rotor element and one of the bearings.

[0029] Optionally, the rotating component includes a power output shaft rotatably mounted on the stationary component; the power output shaft has an axial channel, and a fluid inlet and a fluid outlet connected to the axial channel.

[0030] To achieve the above-mentioned purpose, the present application also provides a brush handle assembly on the other hand, which comprises at least a holding shell, an energy storage component installed in the holding shell, and a driving device for oral cleaning as described above; the energy storage component is electrically connected to the driving device, and the power output shaft of the driving device extends out of the holding shell.

[0031] Optionally, the brush handle assembly also includes a liquid storage chamber and a fluid pumping unit located in the grip shell; so the power output shaft has an axial channel, and a fluid inlet and a fluid outlet connected to the axial channel, the fluid inlet of the axial channel can be connected to the liquid storage chamber, and the fluid pumping unit is connected in series to the flow channel connecting the fluid inlet of the axial channel and the liquid storage chamber, so that the fluid pumping unit can extract the fluid in the liquid storage chamber and let the fluid flow out from the fluid outlet of the axial channel through the axial channel.

[0032] To achieve the above objectives, the present application further provides an oral care device, which comprises at least a care head and the brush handle assembly as described above, and the care head is detachably connected to the power output shaft.

[0033] To achieve the above-mentioned purpose, the present application also provides an oral cleaner, which comprises at least a care head and the brush handle assembly as described above; 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

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. 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 creative work.

[0035] Figure 1 is an axonometric schematic diagram of a driving device in one embodiment provided in the present application;

[0036] Figure 2 is a half-section schematic diagram of a driving device in one embodiment provided in the present application;

[0037] Figure 3 is a half-section schematic diagram of an outer shell in one embodiment provided in the present application;

[0038] Figure 4 is a schematic diagram of the assembly of a stator element and a motion detection assembly in an embodiment provided by the present application;

[0039] Figure 5 It is an enlarged schematic diagram of the connection between the stator element and the motion detection assembly in one embodiment provided by the present application;

[0040] Figure 6It is a top view schematic diagram of the connection between the stator element and the motion detection assembly in one embodiment provided by the present application;

[0041] Figure 7 It is a partial cross-sectional schematic diagram of the assembly of the connecting portion and the motion detection component in one embodiment provided by the present application;

[0042] Figure 8 is an exploded schematic diagram of a mounting base and a position feedback member in an embodiment provided in the present application;

[0043] Fig. 9 is a top view schematic diagram of a mounting seat and a position feedback member in an embodiment provided in the present application;

[0044] Fig.10 is a top view schematic diagram of a mounting base and a position feedback member in another optional implementation manner provided by the present application;

[0045] Fig.11 is a top view schematic diagram of a mounting base and a position feedback member in another optional implementation manner provided by the present application;

[0046] Fig.12 is a top view schematic diagram of a mounting base and a position feedback member in another optional implementation manner provided by the present application;

[0047] Fig.13 is a cross-sectional schematic diagram of a driving device in an embodiment provided by the present application;

[0048] Fig.14 is a schematic diagram of a brush handle assembly in one embodiment provided in the present application;

[0049] Fig.15 It is a schematic diagram of an oral cleaner according to an embodiment of the present application.

[0050] Description of reference numerals:

[0051] 110, first axis; 120, accommodating chamber;

[0052] 200, stationary component; 210, housing element; 211, housing body; 2111, anti-rotation protrusion; 2112, end cover; 2113, barrel; 212, rear cover; 213, opening; 220, stator element; 221, stator bracket; 222, surface covering element; 2221, connecting part; 22211, supporting surface; 22212, positioning connector; 22213, elastic buckle; 223, anti-rotation groove;

[0053] 300, rotating assembly; 310, power output shaft; 311, axial channel; 320, rotor element;

[0054] 400, motion detection component; 410, positioning hole; 420, avoidance space; 430, via hole; 440, wiring harness;

[0055] 500, motion feedback component; 510, mounting seat; 511, connecting hole; 512, mounting slot; 513, limit block; 520, position feedback member; 521, limit slot;

[0056] 600, tensioning piece;

[0057] 710. Holding shell; 720. Energy storage component; 730. Liquid storage chamber; 740. Fluid pumping unit; 750. Care head; 751. Fluid channel; 752. Outlet. DETAILED DESCRIPTION

[0058] To make the purpose, technical solutions and advantages of the present application clearer, the embodiments of the present application will be further described in detail below in conjunction with the accompanying drawings. Terms such as "upper", "above", "lower", "below", "first end", "second end", "one end", "the other end" used in the present application to represent spatial relative positions are used to describe the relationship between a unit or feature as shown in the accompanying drawings relative to another unit or feature for the purpose of convenience of explanation. Terms of spatial relative position may be intended to include different orientations of the device in use or work other than the orientation shown in the figure. For example, if the device in the figure is turned over, the unit described as being "below" or "below" other units or features will be located "above" other units or features. Therefore, the exemplary term "below" can encompass both the above and below orientations. The device can be oriented in other ways (rotated 90 degrees or other orientations), and the spatially related descriptors used herein are interpreted accordingly.

[0059] In addition, the terms "installed", "set", "provided with", "connected", "slidingly connected", "fixed", and "sleeved" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0060] As people's living standards improve, more and more families begin to use various oral cleaning devices for oral cleaning, such as electric toothbrushes, water flossers, and all-in-one water flossers to assist in cleaning and improve the oral environment. Taking electric toothbrushes as an example, in the relevant technology, electric toothbrushes are connected to the brush head through the drive shaft of their internal motor components to achieve reciprocating swing of the brush head to improve the cleaning efficiency of teeth.

[0061] However, in the related art, most electric toothbrushes use ordinary motors to achieve swing motion, and ordinary motors usually move at several set swing frequencies / amplitudes and cannot provide more desired vibrations. Compared with ordinary motors, the advantages of adding Hall sensors to motors 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 range of speeds. Therefore, the present application uses a motor with a Hall sensor added as the power part of the oral cleaner, thereby improving the user experience.

[0062] However, the motor with the Hall sensor needs precise control instructions and feedback signals to achieve the above effect. The existing motor motion detection components have complex installation structures and insufficient installation precision, and the instructions and feedback signals provided or fed back are not precise enough, resulting in poor motor control effect, which in turn leads to poor cleaning motion control effect of the electric toothbrush driven by the motor.

[0063] Specifically, when deeply studying the installation structure of the existing motor motion detection component with a Hall sensor, the inventor noticed that the circuit board needs to be fixed to the motor housing through a special bracket. This design requires two precise assembly operations between the motor housing and the circuit board to ensure the accuracy of the Hall sensor circuit board. However, due to the dimensional tolerances in the processing of each component, this double assembly method further increases the assembly error of the system, which in turn affects the control effect of the cleaning motion of the electric toothbrush. At the same time, the fixing method of the magnetic ring has also been scrutinized. In traditional technology, the magnetic ring is usually fixed to its mounting seat with an adhesive, but as the use time increases, the adhesive may age and cause the magnetic ring to shift or even fall off, thereby affecting the control effect of the cleaning motion of the electric toothbrush. In addition, the inventor also observed that in the related art, an additional mounting bracket is set to fix the Hall sensor circuit board and the magnetic ring externally 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, which not only affects the aesthetics of the electric toothbrush, but may also have an adverse effect on its portability.

[0064] 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 directly connects the Hall sensor circuit board to the stationary part of the motor assembly. Such a structure simplifies the assembly process, and the installation can be completed in one operation, which significantly reduces the assembly complexity and improves the assembly accuracy. This modification ensures the precise placement of the Hall sensor circuit board, which helps to improve the motion control effect. At the same time, a limiting structure is added between the magnetic ring and its corresponding mounting seat in the present design, which effectively prevents the displacement of the magnetic ring relative to the mounting seat, ensures the relative position between the magnetic ring and the Hall sensor is accurate, and further ensures the control effect of the electric toothbrush cleaning motion. In addition, 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 is achieved. This compact structure can not only make the electric toothbrush thinner to optimize the aesthetics of the electric toothbrush, but also leave a larger water storage space inside the electric toothbrush to accommodate more flushing liquid, enhancing the overall functionality of the product.

[0065] 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.

[0066] Based on this, 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 be used as a flow channel for liquid and transmit the liquid to the brush head, thereby realizing the mechanical transmission of the device with both flushing and brushing functions.

[0067] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the embodiments described in this application are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of this application.

[0068] The present application provides a driving device, which can be used in 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 flushing machine to drive the brush head of the electric toothbrush or the all-in-one flushing machine to vibrate at a high frequency and / or reciprocate 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 swing, and the present application does not specifically limit this.

[0069] For details, please refer to Figure 1 and Figure 2In an achievable embodiment, the driving device may at least include a driving body. The driving body is used to convert electrical energy into mechanical energy to output high-frequency vibration and / or reciprocating swing. The driving body may include a stationary component 200 and a rotating component 300, wherein the rotating component 300 is rotatably installed in the stationary component 200, and at least one end of the rotating component 300 extends along the first axis 110 and extends to the outside of the stationary component 200 for connecting other accessories. When the driving body is running, the stationary component 200 remains relatively stationary, and the rotating component 300 rotates relative to the stationary component 200, thereby driving the corresponding accessories to move. The stationary component 200 at least partially surrounds the rotating component 300, and the stationary component 200 is formed with a accommodating chamber 120. In practical applications, the driving body may be constructed in a cylindrical shape, and the first axis 110 is the center line of the driving body, that is, the center point of each cross section of the driving body may be located on the first axis 110, and the driving body extends along the first axis 110.

[0070] 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 rotation speed of the rotating component 300 relative to the static component 200, and / or detect the rotation 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. Wherein, 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 static component 200, so that 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 practical 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 wire harness 440 such as a wire or an FPC connecting wire.

[0071] It is worth mentioning that, compared with the related art in which the motion detection component 400 is connected to the stationary component 200 through the corresponding support and requires two positioning and assembly processes, the present application directly connects the motion detection component 400 in the driving device to the stationary component 200, so that the motion detection component 400 only needs one positioning and installation operation 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 driving device is used in oral cleaners such as electric toothbrushes and integrated flushing machines, the modification scheme of the present application can greatly improve the consistency of the assembly accuracy of the motion detection component 400, thereby helping to provide a control effect on the cleaning motion of the electric toothbrush and improving the user experience.

[0072] 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 outwardly 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 integrated 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 liquids, thereby enhancing the overall functionality of the product.

[0073] Please refer to Figure 2 and Figure 3 As shown, in an achievable embodiment, the stationary component 200 may include a housing element 210 and a stator element 220 accommodated in the housing element 210. The stator element 220 is fixedly connected to the housing element 210 so that when the drive device is running, the stator element 220 follows the housing element 210 and remains stationary. The stator element 220 and the housing element 210 are at least one end of the extension direction of the first axis 110 (such as Figure 2 and Figure 3 A predetermined distance is left between the left end and / or the right end (as shown in FIG. 1 ) so that the motion detection component is located at one end of the stator element 220 along the first axis 110 .

[0074] The housing element 210 may be formed in one piece, for example, the housing element 210 may be formed in one piece by bending.

[0075] The housing element 210 may also be of a split design, for example, the housing element 210 includes a housing 211 and a back cover 212. The housing 211 is constructed as a cylindrical structure, the axis of the housing 211 is colinear with the first axis 110, and an opening 213 is formed at one end of the housing 211, so that the stator element 220, the rotating assembly 300 and the motion detection component can be installed into the housing 211 through the opening 213. The back cover 212 is connected to the housing 211 and at least partially covers the opening 213. When the stator element 220, the rotating assembly 300 and the motion detection component are installed into the housing 211 through the opening 213, the back cover 212 can at least partially seal the opening 213 to prevent foreign objects from entering the interior of the housing 211 and affecting the normal operation of the drive device.

[0076] When the housing element 210 is a split design formed by connecting the housing body 211 and the rear cover 212, in an achievable embodiment, the motion detection component can be located at one end of the stator element 220 adjacent to the rear cover 212 (e.g. Figure 2 In another optional embodiment, the motion detection component may also be located at an end of the stator element 220 away from the rear cover 212, which is not specifically limited in the present application.

[0077] The present application provides a variety of achievable implementation methods regarding the specific connection method of the motion detection component 400 that can complete the positioning and assembly with a single positioning and installation operation. Please refer to the following content for details.

[0078] In an achievable implementation, the motion detection assembly 400 is directly connected to the outer shell 211. Specifically, Figure 3 As shown, the outer shell 211 includes an integrally formed end cap 2112 and a barrel 2113, and the motion detection assembly 400 is directly connected to the inner circumferential wall of the barrel 2113. When the motion detection component is located at the end of the stator element 220 away from the rear cover 212, the outer shell 211 can also be directly connected to the inner side of the end cap 2112.

[0079] In another optional embodiment, the stator element 220 may include a stator bracket 221. The stator bracket 221 is used to provide a stable support for the stator in the driving device and keep the stator in a correct position in the driving device. The motion detection assembly 400 is directly connected to the stator bracket 221.

[0080] In another optional embodiment, if Figure 4 As shown, the stator element 220 may include a stator support 221 and a surface covering element 222 , wherein the surface covering element 222 at least partially covers the stator support 221 to form an insulating layer to prevent current leakage and accidental short circuit. The motion detection assembly 400 is directly connected to the surface covering element 222 .

[0081] It is worth mentioning that the surface covering element 222 is formed as a whole with the stator bracket 221 by injection molding, that is, the surface covering element 222 is formed by injection molding, and its manufacturing precision can be higher, so that the assembly precision of the motion detection component 400 and the surface covering element 222 can be further improved, thereby improving the control performance of the drive device, and further ensuring the consistency of the brush head swing. The material of the surface covering element 222 can be plastic or rubber or thermoplastic elastomer. Therefore, the present application preferably adopts the method of directly connecting the motion detection component 400 and the surface covering element 222, and the subsequent description will be made accordingly.

[0082] The motion detection assembly 400 may be connected to the inner wall of the surface covering element 222, or may be connected to the outer wall of the surface covering element 222, or the motion detection assembly 400 may be connected to the end of the surface covering element 222. For ease of understanding, the specific connection structure of the motion detection assembly 400 and the surface covering element 222, please refer to Figure 4 As shown, taking the connection between the end of the motion detection component 400 and the surface covering element 222 as an example, in a feasible embodiment, the surface covering element 222 extends along the first axis 110, and one end of the surface covering element 222 extends to the outside of the stator bracket 221 to form a connecting portion 2221, so that the surface covering element 222 is connected to the motion detection component 400 through the connecting portion 2221.

[0083] In an achievable implementation, the connecting portion 2221 can be connected to the motion detection component 400 by plastic deformation. Figure 5 As shown, the end of the connecting portion 2221 away from the stator bracket 221 is formed with a support surface 22211 and a positioning connector 22212 extending from the support surface 22211 to a direction away from the stator bracket 221. The support surface 22211 is used to support the motion detection assembly 400, and the support surface 22211 is substantially perpendicular to the first axis 110, so that the support surface 22211 can be parallel to the motion detection assembly 400, so as to increase the contact area between the support surface 22211 and the motion detection assembly 400 and improve the support stability. The positioning connector 22212 is used to position and connect the motion detection assembly 400.

[0084] The motion detection assembly 400 is formed with a positioning hole 410 adapted to the positioning connector 22212, and the inner contour of the positioning hole 410 matches the outer contour of the positioning connector 22212 to position the motion detection assembly 400. In addition, the extension length of the positioning connector 22212 is greater than the hole depth of the positioning hole 410. When the motion detection assembly 400 is positioned and installed on the connecting portion 2221 along the extension direction of the first axis 110 through the positioning connector 22212 and the positioning hole 410, the motion detection assembly 400 abuts against the support surface 22211, the positioning connector 22212 passes through the positioning hole 410, and the portion of the positioning connector 22212 that passes through the positioning hole 410 is formed by plastic deformation to extend in a direction perpendicular to the first axial direction 110 and abut against a side of the motion detection assembly 400 away from the support surface 22211, and the blocking structure cooperates with the support surface 22211 to block the motion detection assembly 400 from extending in the direction of the first axis 110 (such as Figure 2 left and right directions) movement.

[0085] Among them, plastic deformation refers to the permanent shape change of a material when it is subjected to an external force. When the external force is removed, the material cannot return to its original shape or size. In a feasible embodiment, the portion of the positioning connector 22212 passing through the positioning hole 410 is plastically deformed by curing due to thermal deformation. In practical applications, the portion of the positioning connector 22212 passing through the positioning hole 410 is plastically deformed by bending deformation after being heated, and then curing. Of course, the portion of the positioning connector 22212 passing through the positioning hole 410 is deformed by hot melting after being heated to form a "lump", and then plastically deformed by curing. In another optional embodiment, the portion of the positioning connector 22212 passing through the positioning hole 410 can also be directly plasticized by force, that is, the portion of the positioning connector 22212 passing through the positioning hole 410 is subjected to a permanent shape change caused by a stress exceeding its elastic limit.

[0086] Please see again Figure 5 As shown, in an achievable implementation, the above-mentioned connecting parts 2221 have at least two, and the at least two connecting parts 2221 are arranged at intervals around the circumference of the stator bracket 221, so as to be connected to the motion detection component 400 through multiple connecting parts 2221, so as to improve the stability of the connection to the motion detection component 400, and avoid the problem of connection failure of the motion detection component 400 in the environment of high-frequency vibration of the driving device. At the same time, the at least two connecting parts 2221 are arranged at intervals, and a heat dissipation channel can also be formed between two adjacent connecting parts 2221, so that the heat in the stationary component 200 and the rotating component 300 is transferred out through the heat dissipation channel, thereby improving the heat dissipation effect.

[0087] In another optional embodiment, the plurality of connecting parts 2221 may also be adjacent to each other in sequence to form a continuous integrated structure, for example, to form a continuous annular structure (O-shaped) or an open annular structure (C-shaped). Of course, some of the connecting parts 2221 may form a continuous integrated structure, while the other connecting parts 2221 may be arranged at intervals, which is not specifically limited in the present application.

[0088] The supporting surface 22211 is formed at one end of each connecting portion 2221 away from the stator support 221, and the positioning connector 22212 is provided on at least part of the connecting portions 2221. In other words, the supporting surface 22211 and the positioning connector 22212 may be formed on each connecting portion 2221; or, the supporting surface 22211 is formed on each connecting portion 2221, but the positioning connector 22212 is formed on only part of the connecting portions 2221. In practical applications, the number of the positioning connectors 22212 may be one, two, three, four or five, etc., and this application does not specifically limit this.

[0089] Preferably, there should be at least three positioning connectors 22212, and at least three positioning connectors 22212 are not in the same line. In this way, when the motion detection assembly 400 is positioned and connected to the connecting portion 2221 through at least three positioning connectors 22212, at least three positioning connectors 22212 can provide a stable support structure for the motion detection assembly 400, so that the motion detection assembly 400 is kept in a predetermined position, and the motion detection assembly 400 is prevented from moving or rotating in space. At the same time, at least three positioning connectors 22212 can help to distribute the load more evenly, reduce the stress concentration or deformation of some positioning connectors 22212 due to load concentration, and thus cause the motion detection assembly 400 to shake or shift.

[0090] In a feasible embodiment, from the section of the straight line perpendicular to the first axis 110, that is, from the section of the cross section, before the positioning connector 22212 is plastically deformed, the cross-sectional shape of the positioning hole 410 and the positioning connector 22212 is the same, and is at least one of a circle, a rectangle, a sector and an ellipse. Of course, the cross-sectional shape of the positioning hole 410 can also be other special-shaped shapes, and the present application does not specifically limit this. In practical applications, the cross-sectional shapes of multiple positioning holes 410 can be the same or different. For example, when there are four positioning holes 410, the cross-sectional shapes of the four positioning holes 410 can all be sectors. Of course, one positioning hole 410 can also be circular and three can be sectors.

[0091] like Figure 5 and Figure 6As shown, in a feasible embodiment, a plurality of positioning holes 410 can be provided adjacent to the outer peripheral wall of the motion detection assembly 400. In this way, more positioning holes 410 can be arranged in the peripheral area of ​​the motion detection assembly 400 having a larger area to increase the connection points between the motion detection assembly 400 and the connecting portion 2221, thereby providing better structural stability, and further more evenly distributing the load acting on the object and reducing stress concentration.

[0092] Further, such as Figure 5 As shown, the positioning hole 410 is connected to the outer peripheral wall of the motion detection component 400, so that the motion detection component 400 can be installed with a clear reference edge, simplifying the installation process. When the positioning connector 22212 is positioned and matched with the positioning hole 410, the positioning connector 22212 is roughly flush with the outer peripheral wall of the motion detection component 400. In this way, on the one hand, the aesthetics of the connection between the motion detection component 400 and the connecting portion 2221 can be ensured; on the other hand, the projection of the motion detection component 400 on the stator element 220 along the first axis 110 can be located within the range of the stator element 220, that is, the motion detection component 400 is prevented from protruding outward in the radial direction of the stator element 220 to increase the overall volume of the drive device, which is conducive to the miniaturized design of the drive device. In another optional embodiment, as Figure 6 As shown, the positioning hole 410 is not connected to the outer peripheral wall of the motion detection component 400 , that is, a certain distance is left between the positioning hole 410 and the outer peripheral wall of the motion detection component 400 .

[0093] 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 420 formed by the inner peripheral wall of the motion detection assembly 400. When the motion detection assembly 400 is connected to the connecting portion 2221 of the surface covering element 222, the axis of the escape space 420 is substantially colinear with the axis of the rotating assembly 300, so that the rotating assembly 300 can at least partially extend from the stator element 220 through the escape space 420.

[0094] In practical applications, the motion detection assembly 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 positioning hole 410 is provided on the circuit board, and the circuit board may be constructed as a continuous annular structure or an open annular structure, so that the inner peripheral wall of the circuit board surrounds and forms the avoidance space 420.

[0095] In another optional embodiment, the connecting portion 2221 can be connected to the motion detection component 400 by elastic deformation. Figure 7As shown, an elastic buckle 22213 and a support surface 22211 for supporting the motion detection assembly 400 are formed at one end of the connecting portion 2221 away from the stator bracket 221. Accordingly, a through hole 430 is formed on the motion detection assembly 400. When the motion detection assembly 400 is connected to the connecting portion 2221 along the extension direction of the first axis 110, the motion detection assembly 400 squeezes the elastic buckle 22213 so that the elastic buckle 22213 is elastically deformed and passes through the through hole 430. After the elastic buckle 22213 passes through the through hole 430, the elastic buckle 22213 returns to the initial state to be buckled on the side of the motion detection assembly 400 away from the support surface 22211, and the motion detection assembly 400 abuts against the support surface 22211, so that the motion detection assembly 400 is blocked from moving along the extension direction of the first axis 110 under the joint action of the elastic buckle 22213 and the support surface 22211.

[0096] Furthermore, the elastic buckle 22213 can also be used in conjunction with the positioning pin. For example, the end of the connecting portion 2221 away from the stator bracket 221 is formed with both the elastic buckle 22213 and the positioning pin. Accordingly, the motion detection component 400 is provided with both the through hole 430 and the positioning hole 410 adapted to the positioning pin. In this way, the motion detection component 400 can be positioned and matched on the connecting portion 2221 by the matching of the positioning pin and the positioning hole 410, and can be connected by the elastic buckle 22213 to achieve precise fixation.

[0097] See again Figure 2 As shown, in an achievable 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 stationary assembly 200, 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 together. The motion feedback assembly 500 is fixedly connected to the power output shaft 310 so that the motion feedback assembly 500 rotates following the rotation of the power output shaft 310, so that 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.

[0098] Among them, the rotor element 320, the motion feedback component 500 and the motion detection component 400 are arranged at intervals along the extension direction of the first axis 110. The motion feedback component 500 can be located between the rotor elements 320, and the motion feedback component 500 can also be located on the side of the motion detection component 400 away from the rotor element 320. This application does not make specific limitations here.

[0099] Please also see Figure 2 and Figure 8As shown, in an achievable implementation, the motion feedback component 500 includes a mounting seat 510 and a position feedback member 520. The mounting seat 510 is provided with a connecting hole 511, and the mounting seat 510 is fixedly sleeved on the power output shaft 310 through the connecting hole 511 to rotate with the power output shaft 310. The mounting seat 510 is also provided with a mounting groove 512, and the mounting groove 512 is arranged on the peripheral side of the connecting hole 511. The position feedback member 520 is installed in the mounting groove 512, so that the position feedback member 520 can rotate with the power output shaft 310 through the mounting seat 510. Among them, the notch of the mounting groove 512 is arranged toward the motion detection component 400, and the motion detection component 400 is used to detect the moving position of the position feedback member 520.

[0100] It is worth mentioning that by installing the position feedback member 520 on the power output shaft 310 through the mounting seat 510, the installation stability of the position feedback member 520 can be improved, and the squeezing force on the position feedback member 520 during the installation process can be reduced to avoid damage to the position feedback member 520 or unstable movement process. Since the installation stability and structural stability of the position feedback member 520 are improved, the reliability of the position detection result of the position feedback member 520 by the motion detection component 400 can be improved, thereby improving the control effect of the brush head swing process.

[0101] In practical applications, the mounting seat 510 can be a plastic part or a metal part, such as a copper part, to improve the structural strength of the mounting seat 510 and the connection stability between the mounting seat 510 and the power output shaft 310. The mounting seat 510 and the power output shaft 310 can be connected to each other by key connection, bonding, welding, heat sleeve or cold shrinkage, etc., which is not specifically limited in this application.

[0102] 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 movement position of the position feedback component 520 by magnetic induction to determine the movement position of the rotor element 320, thereby improving the reliability of the detection result.

[0103] In practical 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 can be formed by magnetizing the same magnet in different areas to form two different magnetic poles. There is no limitation here, and it is only necessary that 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 reciprocate between the two preset positions of the position feedback member 520.

[0104] In an achievable implementation, the distance between the motion detection component 400 and the position feedback component 520 is in the range of 1 mm to 3 mm. In this way, the position feedback component 520 can be detected by the Hall sensor on the motion detection component 400, and the motion detection component 400 is not disturbed by the magnetic field of the position feedback component 520, thereby providing a clear output signal and ensuring the control effect of the drive device.

[0105] In an achievable implementation, the mounting groove 512 extends around the axis of the connecting hole 511 to form a continuous ring, and the position feedback member 520 is constructed as a ring structure, so as to be adapted to be installed in the mounting groove 512. In practical applications, the position feedback member 520 can be connected to the mounting seat 510 by bonding, so that the above structural design can increase the bonding area between the position feedback member 520 and the mounting seat 510 and improve the installation stability.

[0106] Considering that the motion feedback assembly 500 needs to reciprocate synchronously with the power output shaft 310, that is, it needs to experience high-frequency vibration under normal working conditions, the connection interface between the position feedback member 520 and the mounting seat 510 is susceptible to fatigue damage. Such damage may cause the position feedback member 520 to be relatively displaced or decoupled relative to the mounting seat 510, thereby affecting the accuracy and reliability of system control.

[0107] To solve the above problem, please refer to Figure 8 and Fig. 9As shown, in a feasible embodiment, the outer peripheral wall of the mounting groove 512 may be provided with a limit block 513 extending radially inward, and a limit groove 521 adapted to the limit block 513 is formed on the outer peripheral wall of the position feedback member 520. In this way, when the motion feedback assembly 500 needs to reciprocate synchronously with the power output shaft 310, the limit block 513 cooperates with the limit groove 521 to offset part of the force, so as to reduce the force on the connection interface between the position feedback member 520 and the mounting seat 510, and reduce the possibility of fatigue damage to the connection interface between the position feedback member 520 and the mounting seat 510. At the same time, in the process of installing the position feedback member 520 into the mounting groove 512, the limit block 513 can be referred to for installation to avoid the influence of installation misalignment on the accuracy of system control.

[0108] In another optional embodiment, if Fig.10 As shown, the inner peripheral wall of the installation groove 512 is provided with a limiting groove 521 extending radially inward, and the outer peripheral wall of the position feedback member 520 is formed with a limiting block 513 matched with the limiting groove 521 .

[0109] In another optional embodiment, if Fig.11 As shown, the outer peripheral wall of the installation groove 512 is provided with a limiting groove 521 extending radially outward, and the outer peripheral wall of the position feedback member 520 is formed with a limiting block 513 matched with the limiting groove 521 .

[0110] In another optional embodiment, if Fig.12 As shown, the inner peripheral wall of the installation groove 512 is provided with a limiting block 513 extending radially outward, and the outer peripheral wall of the position feedback member 520 is formed with a limiting groove 521 matched with the limiting block 513 .

[0111] It should be noted that the above-mentioned limiting block 513 and limiting groove 521 may have at least one or more, respectively, and the present application does not make any specific limitation on this.

[0112] like Fig.13 As shown, in an achievable embodiment, an anti-rotation groove 223 is formed on the outer peripheral wall of the stator element 220 of the stationary component 200, and the anti-rotation groove 223 extends in a direction parallel to the first axis 110, and the anti-rotation groove 223 passes through the two opposite ends of the stator element 220 along the first axis 110. An anti-rotation protrusion 2111 matched with the anti-rotation groove 223 is formed on the inner peripheral wall of the outer shell 211 of the stationary component 200. When the stator element 220 is positioned and installed in the outer shell 211 through the anti-rotation groove 223 and the anti-rotation protrusion 2111, the anti-rotation groove 223 cooperates with the anti-rotation protrusion 2111 to prevent the stator element 220 from rotating relative to the outer shell 211, thereby reducing the noise generated by the drive device.

[0113] At the same time, the cooperation between the anti-rotation groove 223 and the anti-rotation protrusion 2111 can also bear part of the force of the stator element 220 rotating relative to the outer shell 211, so as to reduce the force on the connection interface between the stator element 220 and the outer shell 211, and reduce the possibility of fatigue damage of the connection interface between the stator element 220 and the outer shell 211, thereby ensuring the relative position of the motion detection component 400 and the motion feedback component 500 installed on the stator element 220, so as to improve the accuracy of system control.

[0114] In practical applications, the surface covering element 222 may only cover the inner wall of the coil slot of the stator support 221 and the end surface of the stator support 221, and will not cover the outer peripheral wall of the stator support 221. Therefore, the anti-rotation groove 223 may be directly opened on the outer peripheral wall of the stator support 221, thereby utilizing the high strength characteristics of the stator support 221 to improve the connection stability between the stator element 220 and the outer shell 211. The anti-rotation groove 223 may have one or more. When there are multiple anti-rotation grooves 223, the multiple anti-rotation grooves 223 are arranged at intervals along the circumference of the stator support 221, and the number of the anti-rotation protrusions 2111 is less than or equal to the number of the anti-rotation grooves 223.

[0115] Please see again Figure 2 As shown, in an achievable embodiment, the housing element 210 of the stationary component 200 has two ends (such as Figure 2 The left and right ends of the rotating assembly 300 are respectively provided with bearings. The power output shaft 310 of the rotating assembly 300 is rotatably connected to the housing element 210 through the two bearings. The rotor element 320 of the rotating assembly 300 is located in the stationary assembly 200. A tensioning member 600 is sleeved on the power output shaft 310. The tensioning member 600 has elastic properties, and the tensioning member 600 is compressed and located between the rotor element 320 and one of the bearings. In this way, the elastic properties of the tensioning member 600 can provide the necessary preload to maintain a tight fit between the bearing and the rotor element 320, reduce axial movement, avoid affecting the detection effect of the motion detection component, and improve the operating accuracy of the drive device.

[0116] In practical applications, the tensioning member 600 may be an elastic structure such as a spring or a rubber sleeve, and this application does not make any specific limitation on this.

[0117] Furthermore, the tensioning member 600 and the motion detection component can be located at opposite ends of the rotor element 320 along the extension direction of the first axis 110. Through the distributed layout, the rationalization and optimal utilization of the internal space of the driving mechanism are achieved. At the same time, arranging the tensioning member 600 and the motion detection component at both ends of the first axis 110 helps to reduce the potential electromagnetic interference of the tensioning element on the detection accuracy of the motion detection unit.

[0118] In a feasible embodiment, the power output shaft 310 may have an axial channel 311, which extends along the first axis. The axis of the power output shaft 310 or the axial channel 311 is parallel or substantially parallel or coincident with the first axis 110, and the power output shaft 310 is provided with a fluid inlet and a fluid outlet connected to the axial channel 311. In this way, when the driving device is applied to an oral cleaner such as an electric toothbrush, the power output shaft 310 of the driving device can transmit power to drive the brush head to swing, and can also be used as a flow channel for liquid and transmit the liquid to the brush head, thereby realizing both the rinsing function and the brushing function, so as to meet the user's expectation of combining the irrigator with the toothbrush.

[0119] In practical applications, the fluid inlet and the fluid outlet are usually located at two ends of the power output shaft 310 , and the opening directions thereof may be toward the circumferential surface or the end surface of the power output shaft 310 .

[0120] like Fig.14 As shown, based on the same inventive concept, the present application also provides a brush handle assembly. Specifically, the brush handle assembly may include at least a grip shell 710, an energy storage component 720 installed in the grip shell 710, and the above-mentioned driving device for oral cleaning. 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 grip shell 710.

[0121] In practical applications, in order to facilitate the user to hold, the grip shell 710 can be shaped like an elongated body, and the cross-sectional shape of the grip shell 710 can be circular or non-circular (such as D-shaped, elliptical, polygonal, etc.). The specific structure of the energy storage component 720 can refer to the existing battery, and will not be repeated here.

[0122] In an achievable implementation, the above-mentioned handle assembly can be applied to an oral cleaner such as an electric toothbrush as a power part and a gripping part. When the handle assembly is applied to an oral cleaner, the power output shaft 310 of the handle assembly is detachably connected to the care head 750 (such as an accessory with bristles such as a toothbrush head) so that the power output shaft 310 drives the care head 750 to move.

[0123] Further, such as Figure 2 and Fig.15As shown, the above-mentioned brush handle assembly can also integrate the swing and flushing functions and be applied to the integrated 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. The power output shaft 310 has an axial channel 311, and a fluid inlet and a fluid outlet connected to the axial channel 311. The fluid inlet of the axial channel 311 can be connected to 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.

[0124] In an achievable implementation, the brush handle assembly can be applied to an oral cleaner such as an all-in-one flushing machine. When the brush handle assembly is applied to the oral cleaner, the care head 750 of the oral cleaner (such as an accessory with bristles such as an all-in-one flushing head) 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.

[0125] It should be pointed out that the specific structure of the driving device can be referred to the above-mentioned contents, and the present application will not elaborate on it here.

[0126] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A driving device for oral cleaning, characterized in that: The driving device for oral cleaning at least comprises a driving body and a motion detection component, wherein: The driving body extending along the first axis (110) comprises a stationary component (200) and a rotating component (300), the rotating component (300) being rotatably mounted on the stationary component (200), the stationary component (200) at least partially surrounding the rotating component (300), the stationary component (200) being formed with a receiving chamber (120), and at least one end of the rotating component (300) extending along the first axis (110) and extending out of the stationary component (200); The motion detection component at least partially located in the accommodating chamber (120) comprises 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 stationary component (200), and the motion detection component (400) detects the moving 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 stationary component (200) comprises a housing element (210) and a stator element (220) accommodated in the housing element (210); The stator element (220) is fixedly connected to the housing element (210), and the motion detection component is located at one end of the stator element (220) along the first axis (110).

3. The driving device for oral cleaning according to claim 2, characterized in that: The housing element (210) comprises an outer housing (211) and a rear cover (212); The outer shell (211) is constructed as a cylindrical structure, and an opening (213) is formed at one end of the outer shell (211); The rear cover (212) is connected to the outer shell (211) and at least partially covers the opening (213); the motion detection component is located at one end of the stator element (220) adjacent to the rear cover (212).

4. The driving device for oral cleaning according to claim 2, characterized in that: The housing element (210) comprises an outer housing (211) and a rear cover (212); The outer shell (211) is constructed as a cylindrical structure, and an opening (213) is formed at one end of the outer shell (211); The rear cover (212) is connected to the outer shell (211) and at least partially covers the opening (213); the motion detection component is located at an end of the stator element (220) away from the rear cover (212).

5. The driving device for oral cleaning according to claim 3 or 4, characterized in that: The stator element (220) comprises a stator bracket (221), and the motion detection component (400) is connected to the stator bracket (221) or the outer shell (211).

6. The driving device for oral cleaning according to claim 2, characterized in that: The stator element (220) comprises a stator support (221) and a surface covering element (222); The surface covering element (222) at least partially covers the stator support (221), and the motion detection component (400) is connected to the surface covering element (222).

7. The driving device for oral cleaning according to claim 6, characterized in that: The surface covering element (222) extends along the first axis (110), and one end of the surface covering element (222) extends to the outside of the stator bracket (221) to form a connecting portion (2221), so that the surface covering element (222) is connected to the motion detection component (400) through the connecting portion (2221).

8. The driving device for oral cleaning according to claim 7, characterized in that: An end of the connecting portion (2221) away from the stator bracket (221) is formed with a supporting surface (22211) for supporting the motion detection component (400) and a positioning connecting piece (22212) extending from the supporting surface (22211) in a direction away from the stator bracket (221); A positioning hole (410) adapted to the positioning connector (22212) is formed on the motion detection component (400). When the motion detection component (400) is positioned and installed on the connecting portion (2221) along the extension direction of the first axis (110) through the positioning connector (22212) and the positioning hole (410), the motion detection component (400) abuts against the support surface (22211). The portion of the positioning connector (22212) passing through the positioning hole (410) is plastically deformed to form a blocking structure extending in a direction perpendicular to the first axis (110) and abutting against a side of the motion detection component (400) away from the support surface (22211), so as to block the motion detection component (400) from moving along the extension direction of the first axis (110).

9. The driving device for oral cleaning according to claim 8, characterized in that: The portion of the positioning connector (22212) that passes through the positioning hole (410) is plastically deformed by force or by thermal deformation and curing.

10. The driving device for oral cleaning according to claim 8, characterized in that: The connecting parts (2221) have at least two, and the at least two connecting parts (2221) are arranged at intervals in the circumferential direction around the stator support (221); The end of each connecting portion (2221) away from the stator bracket (221) is formed with the supporting surface (22211) for supporting the motion detection component (400), and at least part of the connecting portion (2221) is provided with the positioning connecting piece (22212) extending from the supporting surface (22211) in a direction away from the stator bracket (221).

11. The driving device for oral cleaning according to claim 10, characterized in that: From the perspective of a cross-section taken along a straight line perpendicular to the first axis (110), before the positioning connector (22212) undergoes plastic deformation, the cross-sectional shape of the positioning hole (410) and the positioning connector (22212) is the same and is at least one of a circular, rectangular, fan-shaped, and elliptical shape.

12. The driving device for oral cleaning according to claim 10, characterized in that: The positioning hole (410) is arranged adjacent to the outer peripheral wall of the motion detection component (400); The positioning hole (410) is in communication with the outer peripheral wall of the motion detection assembly (400); when the positioning connector (22212) is positioned and matched with the positioning hole (410), the positioning connector (22212) is substantially flush with the outer peripheral wall of the motion detection assembly (400), so that the projection of the motion detection assembly (400) on the stator element (220) along the first axis (110) is located within the range of the stator element (220).

13. The driving device for oral cleaning according to claim 10, characterized in that: The positioning hole (410) is arranged adjacent to the outer peripheral wall of the motion detection component (400), and the positioning hole (410) is not connected to the outer peripheral wall of the motion detection component (400).

14. The driving device for oral cleaning according to claim 12, characterized in that: The inner peripheral wall of the motion detection component (400) is surrounded to form an escape space (420); When the motion detection component (400) is connected to the connecting portion (2221) of the surface covering element (222), the axis of the avoidance space (420) is colinear with the axis of the rotating component (300), so that the rotating component (300) can at least partially extend from the stator element (220) through the avoidance space (420).

15. The driving device for oral cleaning according to claim 7, characterized in that: An end of the connecting portion (2221) away from the stator bracket (221) is formed with an elastic buckle (22213) and a supporting surface (22211) for supporting the motion detection component (400); A through hole (430) is formed on the motion detection component (400). When the motion detection component (400) is connected to the connecting portion (2221) along the extension direction of the first axis (110), the motion detection component (400) squeezes the elastic buckle (22213), and the elastic buckle (22213) generates elastic deformation and passes through the through hole (430). After the elastic buckle (22213) passes through the through hole (430), the elastic buckle (22213) returns to its initial state to be buckled on the side of the motion detection component (400) away from the support surface (22211), and the motion detection component (400) abuts against the support surface (22211) to prevent the motion detection component (400) from moving along the extension direction of the first axis (110).

16. The driving device for oral cleaning according to any one of claims 1 to 4, characterized in that: The rotating assembly (300) comprises a power output shaft (310) and a rotor element (320), wherein the power output shaft (310) is rotatably mounted on the stationary assembly (200), and the rotor element (320) is fixedly connected to the power output shaft (310); The motion feedback component (500) is fixedly connected to the power output shaft (310); the rotor element (320), the motion feedback component (500) and the motion detection component (400) are arranged at intervals along the extension direction of the first axis (110); the motion feedback component (500) is located between the rotor element (320) and the motion detection component (400); or, the motion feedback component (500) is located on a side of the motion detection component (400) away from the rotor element (320).

17. The driving device for oral cleaning according to claim 16, characterized in that: The motion feedback component (500) comprises a mounting seat (510) and a position feedback member (520); The mounting seat (510) is provided with a connecting hole (511) and a mounting groove (512); the mounting seat (510) is fixedly sleeved on the power output shaft (310) through the connecting hole (511); the mounting groove (512) is provided on the peripheral side of the connecting hole (511), and the notch of the mounting groove (512) faces the moving Detection assembly (400) is set; The position feedback component (520) is installed in the installation groove (512) and rotates along with the rotating component (300).

18. The driving device for oral cleaning according to claim 17, characterized in that: The distance between the motion detection component (400) and the position feedback component (520) ranges from 1 mm to 3 mm.

19. The driving device for oral cleaning according to claim 17, characterized in that: The installation groove (512) extends around the axis of the connecting hole (511) to form a continuous ring, and the position feedback member (520) is constructed as a ring structure to be adapted to be installed in the installation groove (512).

20. The driving device for oral cleaning according to claim 19, characterized in that: The outer peripheral wall of the installation groove (512) is provided with a limit block (513) extending radially inward, and the outer peripheral wall of the position feedback member (520) is formed with a limit groove (521) adapted to the limit block (513); Alternatively, the inner peripheral wall of the installation groove (512) is provided with a limiting groove (521) extending radially inward, and the outer peripheral wall of the position feedback member (520) is formed with a limiting block (513) adapted to the limiting groove (521); Alternatively, the outer peripheral wall of the installation groove (512) is provided with a limiting groove (521) extending radially outward, and the outer peripheral wall of the position feedback member (520) is formed with a limiting block (513) adapted to the limiting groove (521); Alternatively, the inner peripheral wall of the installation groove (512) is provided with a limit block (513) extending radially outward, and the outer peripheral wall of the position feedback member (520) is formed with a limit groove (521) adapted to the limit block (513).

21. The driving device for oral cleaning according to any one of claims 1 to 4, characterized in that: An anti-rotation groove (223) is formed on the outer peripheral wall of the stator element (220) of the stationary component (200), and the anti-rotation groove (223) extends in a direction parallel to the first axis (110), and the anti-rotation groove (223) passes through two opposite ends of the stator element (220) along the first axis (110); The inner peripheral wall of the outer shell (211) of the stationary component (200) is formed with an anti-rotation protrusion (2111) adapted to the anti-rotation groove (223); when the stator element (220) is positioned and installed in the outer shell (211) through the anti-rotation groove (223) and the anti-rotation protrusion (2111), the anti-rotation groove (223) and the anti-rotation protrusion (2111) cooperate to prevent the stator element (220) from rotating relative to the outer shell (211).

22. The driving device for oral cleaning according to any one of claims 1 to 4, characterized in that: The housing element (210) of the stationary component (200) is provided with bearings at both ends along the extension direction of the first axis (110); The power output shaft (310) of the rotating component (300) is rotatably connected to the housing element (210) via the two bearings; the rotor element (320) of the rotating component (300) is located in the stationary component (200); a tensioning member (600) is sleeved on the power output shaft (310); the tensioning member (600) has elastic properties, and the tensioning member (600) is compressed and located between the rotor element (320) and one of the bearings.

23. The driving device for oral cleaning according to claim 1, characterized in that: The rotating component (300) includes a power output shaft (310) rotatably mounted on the stationary component (200); The power output shaft (310) has an axial channel (311), and a fluid inlet and a fluid outlet communicated with the axial channel (311).

24. A brush handle assembly, characterized in that: The brush handle assembly at least comprises 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 22; 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 holding shell (710).

25. The brush handle assembly according to claim 24, characterized in that: The brush handle assembly further comprises a liquid storage chamber (730) and a fluid pumping unit (740) located in the grip shell (710); Therefore, the power output shaft (310) has an axial channel (311), and a fluid inlet and a fluid outlet connected to the axial channel (311); the fluid inlet of the axial channel (311) can be connected to 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).

26. An oral cleaning device, characterized in that: The oral cleaner comprises at least a care head (750) and the brush handle assembly according to claim 24, and the care head (750) is detachably connected to the power output shaft (310).

27. An oral cleaning device, characterized in that: The oral cleaner comprises at least a care head (750) and the brush handle assembly according to claim 25; 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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