Drive device used for oral cleaning, brush handle assembly, and oral cleaner

Abstract

Disclosed in the present application are a drive device used for oral cleaning, a brush handle assembly, and an oral cleaner. The drive device at least comprises a drive body and a motion detection component. The drive body extending along a first axis comprises a stationary assembly and a rotating assembly, the rotating assembly being rotatably mounted on the stationary assembly, the stationary assembly at least partially surrounding the rotating assembly, and an accommodation chamber being formed in the stationary assembly. The motion detection component located in the accommodation chamber comprises a motion detection assembly and a motion feedback assembly, the motion feedback assembly being connected to the rotating assembly and rotating along with the rotating assembly, the motion detection assembly being directly connected to the stationary assembly, and the motion detection assembly determining a motion position of the rotating assembly by means of the motion feedback assembly. The present application can improve the control effect on oral cleaners, thereby improving the use experience of users.

Description

Drive device for oral cleaning, brush handle assembly and oral cleaner TECHNICAL FIELD

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

[0002] In the related art, an electric toothbrush is connected to a brush head by a drive shaft of a motor component inside the electric toothbrush, so as to realize reciprocating swing of the brush head and improve cleaning efficiency.

[0003] However, the motor component of the electric toothbrush usually moves at a set number of vibration frequencies and / or vibration amplitudes, and cannot provide more desired vibrations. The motor component can control the movement of the output shaft by setting a movement detection component, but the installation structure of the movement detection component in the prior art is complex and the installation precision is insufficient, which leads to poor control effect on the brush head assembly and has certain adverse effects on tooth cleaning effect and oral health.

[0004] SUMMARY

[0005] The present application aims to provide a drive device for oral cleaning, a brush handle assembly and an oral cleaner, which can improve the control effect on the oral cleaner and improve the user experience.

[0006] To achieve the above-mentioned purpose, the present application provides a drive device for oral cleaning, which at least comprises a drive body and a movement detection component, wherein the drive 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 forms an accommodation cavity, and at least one end of the rotating component extends along the first axis and protrudes outside the stationary component; the movement detection component at least partially located in the accommodation cavity comprises a movement detection component and a movement feedback component, wherein the movement feedback component is connected with the rotating component and rotates with the rotating component, and the movement detection component is directly connected with the stationary component, and the movement detection component detects the movement position of the rotating component through the movement feedback component.

[0007] Compared with the similar need for twice positioning and assembling processes of the motion detection assembly in the related art through the corresponding support and the stationary assembly, the motion detection assembly is directly connected with the stationary assembly in the driving device, so that the motion detection assembly only needs one positioning and assembling operation to complete the positioning and assembling, the assembling process is simplified, the assembling complexity is significantly reduced, and the problem of large assembling precision difference caused by multiple assembling is solved. When the driving device is applied to an oral cleaning device such as an electric toothbrush and a flushing integrated machine, the improved scheme of the present application can greatly improve the assembling precision of the motion detection assembly, thereby ensuring the control precision of the driving device, improving the control effect of the oral cleaning device, solving the harm and discomfort caused by unstable motion or errors of the oral cleaning device due to poor control effect, and improving the user experience.

[0008] Meanwhile, the motion detection component composed of the motion detection assembly and the motion feedback assembly is installed in the accommodation chamber. That is, the motion detection component is built-in the driving body, avoiding forming an outwardly expanding structure outside the driving body, so that the overall size of the driving device is reduced, and a more compact and miniaturized design is realized. When the driving device is applied to an oral cleaning device such as an electric toothbrush and a flushing integrated machine, the compact structure of the present application not only makes the oral cleaning device thinner and smaller to optimize the aesthetics of the electric toothbrush, but also leaves more space for water storage inside the oral cleaning device to accommodate more flushing liquid, thereby enhancing the overall functionality of the product.

[0009] To achieve the above object, the present application further provides a brush handle assembly, which at least comprises a holding shell, and an energy storage component and a driving device for oral cleaning as described above installed in the holding shell; the energy storage component is electrically connected with the driving device, and the power output shaft of the driving device extends out of the holding shell.

[0010] To achieve the above object, the present application further provides an oral cleaning device, which at least comprises a treatment head and a brush handle assembly as described above; the treatment head is detachably connected with the power output shaft.

[0011] To achieve the above object, the present application further provides an oral cleaning device, which at least comprises a treatment head and a brush handle assembly as described above; the treatment head has a fluid passage and a flow outlet in communication with the fluid passage, the power output shaft is connected with the treatment head and drives the treatment head to perform displacement movement, and the fluid outlet of the axial passage is in communication with the fluid passage, and the oral cleaning device outputs water flow through the flow outlet. BRIEF DESCRIPTION OF DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained without creative effort based on these drawings.

[0013] Fig. 1 is a perspective view of a driving device according to an embodiment of the present application;

[0014] Fig. 2 is a half cutaway view of the driving device according to an embodiment of the present application;

[0015] Fig. 3 is a half cutaway view of a housing according to an embodiment of the present application;

[0016] Fig. 4 is an assembly view of a stator element and a motion detection assembly according to an embodiment of the present application;

[0017] Fig. 5 is an enlarged view of a connection between the stator element and the motion detection assembly according to an embodiment of the present application;

[0018] Fig. 6 is a top view of the connection between the stator element and the motion detection assembly according to an embodiment of the present application;

[0019] Fig. 7 is a partial cutaway view of an assembly of a coupling portion and the motion detection assembly according to an embodiment of the present application;

[0020] Fig. 8 is an exploded view of a mounting seat and a position feedback element according to an embodiment of the present application;

[0021] Fig. 9 is a top view of the mounting seat and the position feedback element according to an embodiment of the present application;

[0022] Fig. 10 is a top view of the mounting seat and the position feedback element according to another embodiment of the present application;

[0023] Fig. 11 is a top view of the mounting seat and the position feedback element according to another embodiment of the present application;

[0024] Fig. 12 is a top view of the mounting seat and the position feedback element according to another embodiment of the present application;

[0025] Fig. 13 is a cross-sectional view of the driving device according to an embodiment of the present application;

[0026] Fig. 14 is a view of a brush handle assembly according to an embodiment of the present application;

[0027] Fig. 15 is a view of an oral cleaner according to an embodiment of the present application.

[0028] BRIEF DESCRIPTION OF DRAWINGS 110, first axis; 120, accommodating chamber; 200, stationary assembly; 210, housing element; 211, housing body; 2111, anti-rotation protrusion; 2112, end cap; 2113, cylindrical portion; 212, rear cap; 213, opening; 220, stator element; 221, stator support; 222, surface covering element; 2221, engagement portion; 22211, support surface; 22212, positioning connector; 22213, elastic snap; 223, anti-rotation groove; 300, rotating assembly; 310, power output shaft; 311, axial passage; 320, rotor element; 400, motion detection assembly; 410, positioning hole; 420, clearance space; 430, via hole; 440, wire bundle; 500, motion feedback assembly; 510, mounting seat; 511, connecting hole; 512, mounting slot; 513, limiting block; 520, position feedback element; 521, limiting slot; 600, tensioning element; 710, holding housing; 720, energy storage component; 730, fluid storage chamber; 740, fluid pumping unit; 750, care head; 751, fluid passage; 752, fluid outlet. DETAILED DESCRIPTION

[0029] For the purpose of the present application, the technical solutions and advantages will be more apparent, the embodiments of the present application will be described in further detail below with reference to the drawings. The terms such as "upper", "above", "lower", "below", "first end", "second end", "one end", "the other end" and the like used by the present application to describe the relative position of one unit or feature with respect to another unit or feature are for the purpose of convenience of description. The spatially relative terms can be intended to include different orientations of the device in use or operation in addition to the orientation shown in the figures. For example, if the device in the figure is turned over, the unit described as being "below" or "under" the other unit or feature will be located "above" the other unit or feature. 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 descriptions used herein will be interpreted accordingly.

[0030] In addition, the terms "mounting", "provision", "provided with", "connection", "sliding connection", "fixing", "sleeving" should be broadly understood. For example, "connection" can be fixed connection, detachable connection, or integral structure; can be mechanical connection, or electrical connection; can be direct connection, or indirect connection through intermediate medium, or internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood according to the specific circumstances by those skilled in the art.

[0031] With the improvement of people's living standards, more and more families begin to use various oral cavity cleaners to clean the oral cavity, such as electric toothbrushes, oral irrigators and flush integrated machines and other tools to assist cleaning and improve the oral environment. Taking the electric toothbrush as an example, in the related art, the electric toothbrush is connected to the brush head through the driving shaft of the internal motor component to realize the reciprocating swing of the brush head, so as to improve the cleaning efficiency of the teeth.

[0032] However, most of the electric toothbrushes in the related art realize the swing motion by using ordinary motors, and the ordinary motors usually have a set of swing frequency / swing amplitude motion, which cannot provide more expected vibrations. Compared with ordinary motors, the motor with a Hall sensor has the advantages of high precision and high repeatability of position, speed and torque control, fast dynamic response and tracking performance, can reach the set speed in a very short time and accurately track the instructions, and can realize smooth speed regulation in a wide speed range. Therefore, the motor with a Hall sensor is used as the power part of the oral cavity cleaner in the present application, so as to improve the user experience.

[0033] However, the motor with a Hall sensor needs precise control instructions and feedback signals to achieve the above effects. However, the existing motor motion detection component installation structure is complex, the installation precision is insufficient, and the provided or feedback instructions and feedback signals are not accurate enough, resulting in poor motor control effect, and further resulting in poor cleaning motion control effect of the electric toothbrush driven by the motor.

[0034] Specifically, in the in-depth study of the installation structure of the motor motion detection component provided with the Hall sensor, the inventors noticed that the circuit board needs to be fixed on the motor shell through a special bracket. This design requires two precise assembly operations between the motor shell and the circuit board to ensure the accuracy of the Hall sensor circuit board. However, due to the dimensional tolerance in the machining process of each component, this double assembly method further increases the total assembly error of the system, and further affects the control effect of the cleaning motion of the electric toothbrush. At the same time, the fixing method of the magnetic ring is also under review. In the traditional technology, the magnetic ring is usually fixed on its mounting seat by an adhesive, but as the use time increases, the adhesive may age and cause the magnetic ring to displace or even fall off, thereby affecting the control effect of the cleaning motion of the electric toothbrush. In addition, the inventors have observed that in the related art, the Hall sensor circuit board and the magnetic ring are fixed outside the motor shell by setting an additional mounting bracket, which seriously increases the volume of the entire motor component, and further increases the volume of the electric toothbrush in which the motor component is installed. This not only affects the aesthetics of the electric toothbrush, but also may adversely affect its portability.

[0035] Based on this, the 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 with the stationary part of the motor assembly, which simplifies the assembly process and completes the installation with only one operation, significantly reducing assembly complexity and improving assembly accuracy. This change ensures the accurate placement of the Hall sensor circuit board, which helps to improve motion control effect. At the same time, the magnetic ring in the design and its corresponding mounting seat add a limiting structure, effectively preventing the displacement of the magnetic ring relative to the mounting seat, ensuring the relative position accuracy between the magnetic ring and the Hall sensor, thereby further ensuring 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, avoiding the expansion of external structures, so that the overall size of the motor can be reduced, realizing a more compact and small design. This compact structure not only makes the electric toothbrush thinner and smaller to optimize the aesthetics of the electric toothbrush, but also leaves more space for the electric toothbrush to store water, so as to accommodate more flushing liquid and enhance the overall functionality of the product.

[0036] In addition, some people expect to use a mouth irrigator or dental floss in combination with a toothbrush to solve the inconvenience of using a waterpik and an electric toothbrush separately when caring for the oral cavity.

[0037] Based on this, the application then makes an improved design of the motor assembly, specifically, the power output shaft of the motor assembly is designed as a hollow structure, which can not only transmit power but also be used as a liquid flow channel and transmit liquid to the brush head, thereby realizing a mechanical transmission of the device with both flushing and brushing functions.

[0038] The technical solutions in the embodiments of the application will be described clearly and completely below with reference to the drawings. Obviously, the embodiments described in the application are only part of the embodiments of the application, not all the embodiments. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the application.

[0039] The 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 a flushing all-in-one machine to drive the brush head of the electric toothbrush or the flushing all-in-one machine to vibrate at high frequency and / or reciprocate, so as to improve the cleaning efficiency. Of course, the driving device can also be applied to other cleaning equipment that needs high-frequency vibration and / or reciprocation, which is not limited in the application.

[0040] Specifically, please refer to FIG. 1 and FIG. 2, in an implementable embodiment, the driving device can at least include a driving body. The driving body is used to convert electric energy into mechanical energy to output high-frequency vibration and / or reciprocating swing. Wherein, the driving body can include a stationary assembly 200 and a rotating assembly 300, the rotating assembly 300 is rotatably installed in the stationary assembly 200, at least one end of the rotating assembly 300 extends along the first axis 110 and extends to the outside of the stationary assembly 200 for connecting other accessories. When the driving body is running, the stationary assembly 200 remains relatively stationary, and the rotating assembly 300 rotates relative to the stationary assembly 200, thereby driving the corresponding accessory to move. The stationary assembly 200 at least partially surrounds the rotating assembly 300, and the stationary assembly 200 is formed with an accommodation cavity 120. In actual application, the driving body can be configured in a column 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 can be located on the first axis 110, and the driving body extends along the first axis 110.

[0041] In the embodiment, the driving device further includes a motion detection component, which is at least partially located in the accommodation cavity 120. The motion detection component can be used to detect the rotation speed of the rotating assembly 300 relative to the stationary assembly 200, and / or detect the rotation position of the rotating assembly 300 to perform commutation operation, thereby controlling the rotating assembly 300 to reverse rotation at a preset position. Wherein, the motion detection component includes a motion detection assembly 400 and a motion feedback assembly 500. The motion feedback assembly 500 is connected with the rotating assembly 300 and rotates with the rotating assembly 300. The motion detection assembly 400 is directly connected with the stationary assembly 200, so that the motion detection assembly 400 can determine the position of the rotating assembly 300 by detecting the position of the motion feedback assembly 500, thereby realizing the above-mentioned detection function. In actual application, the motion detection assembly 400 can include a circuit board and a position sensor integrated on the circuit board, wherein the position sensor can be a laser sensor or a Hall sensor, etc., which is not limited in the present application. The motion detection assembly 400 can be connected to the control assembly outside the accommodation cavity 120 through a wire harness 440 such as a wire, an FPC connecting line, etc.

[0042] It is worth mentioning that, compared with the similar need of twice positioning assembly process of the motion detection assembly 400 connected with the static assembly 200 through the corresponding support in the related art, the motion detection assembly 400 only needs to be positioned and installed once through the above-mentioned manner of directly connecting the motion detection assembly 400 in the driving device with the static assembly 200, which simplifies the assembly process, significantly reduces the assembly complexity, and solves the problem of large assembly precision difference caused by multiple assembly. When the driving device is applied to an oral cleaner such as an electric toothbrush and a flushing integrated machine, the improved scheme of the present application can greatly improve the consistency of the assembly precision of the motion detection assembly 400, thereby helping to provide control effect of the cleaning motion of the electric toothbrush and improving the user experience.

[0043] At the same time, the motion detection assembly 400 and the motion feedback assembly 500 constitute a motion detection component installed in the accommodation chamber 120. That is, 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 is reduced, and a more compact and miniaturized design is achieved. When the driving device is applied to an oral cleaner such as an electric toothbrush and a flushing integrated machine, the compact structure of the present application not only makes the oral cleaner thinner and smaller to optimize the aesthetics of the electric toothbrush, but also leaves more space for the oral cleaner to store water to accommodate more flushing liquid, thereby enhancing the overall functionality of the product.

[0044] Please refer to FIGS. 2 and 3, in an implementable embodiment, the static assembly 200 can include a housing element 210 and a stator element 220 accommodated in the housing element 210. The stator element 220 is fixedly connected with the housing element 210, so that the stator element 220 remains static with the housing element 210 during operation of the driving device. The stator element 220 and the housing element 210 leave a predetermined distance between the end (such as the left end and / or the right end shown in FIGS. 2 and 3) of at least one end of the housing element 210 along the extension direction of the first axis 110, so that the motion detection component is located at one end of the stator element 220 along the first axis 110.

[0045] The housing element 210 can be integrally designed, for example, the housing element 210 is integrally formed by bending.

[0046] The housing element 210 can also be designed in a split body structure. For example, the housing element 210 includes a housing body 211 and a back cover 212. The housing body 211 is configured as a cylindrical structure, and the axis of the housing body 211 is collinear with the first axis 110. An opening 213 is formed at one end of the housing body 211 to facilitate the installation of the stator element 220, the rotating assembly 300, and the motion detection component into the housing body 211 through the opening 213. The back cover 212 is connected to the housing body 211 and covers the opening 213 at least partially. After the stator element 220, the rotating assembly 300, and the motion detection component are installed into the housing body 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 body 211 and affecting the normal operation of the driving device.

[0047] When the housing element 210 is designed in a split body structure formed by the mutual connection of the housing body 211 and the back cover 212, in one possible implementation, the motion detection component can be located at the end of the stator element 220 adjacent to the back cover 212 (as shown in FIG. 2). In another alternative implementation, the motion detection component can also be located at the end of the stator element 220 away from the back cover 212, which is not specifically limited in the present application.

[0048] The present application provides various possible implementations regarding the specific connection mode of the motion detection assembly 400, which can achieve one-time positioning installation and assembly. For details, please refer to the following content.

[0049] In one possible implementation, the motion detection assembly 400 is directly connected to the housing body 211. Specifically, as shown in FIG. 3, the housing body 211 includes an integrally formed end cover 2112 and a cylindrical portion 2113. The motion detection assembly 400 is directly connected to the inner circumferential wall of the cylindrical portion 2113. When the motion detection component is located at the end of the stator element 220 away from the back cover 212, the housing body 211 can also be directly connected to the inner side of the end cover 2112.

[0050] In another alternative implementation, the stator element 220 can include a stator support 221. The stator support 221 is used to provide stable support for the stator in the driving device and maintain the correct position of the stator in the driving device. The motion detection assembly 400 is directly connected to the stator support 221.

[0051] In another alternative implementation, as shown in FIG. 4, the stator element 220 can include a stator support 221 and a surface covering element 222. The surface covering element 222 at least partially covers the stator support 221 to form an insulation layer, preventing current leakage and accidental short circuit. The motion detection assembly 400 is directly connected to the surface covering element 222.

[0052] It is worth mentioning that the surface covering element 222 is formed integrally with the stator support 221 by injection molding, that is, the surface covering element 222 is formed by injection molding, and the manufacturing precision can be higher, so as to further improve the assembly precision of the motion detection assembly 400 and the surface covering element 222, and further improve the control performance of the driving device, and further ensure 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 application preferably adopts the mode that the motion detection assembly 400 is directly connected with the surface covering element 222, and the subsequent description will also be based on this.

[0053] The motion detection assembly 400 can be connected with the inner circumferential wall of the surface covering element 222, or can be connected with the outer circumferential wall of the surface covering element 222, or the motion detection assembly 400 can be connected with the end of the surface covering element 222. For the convenience of understanding, the specific connection structure of the motion detection assembly 400 and the surface covering element 222, please refer to Fig. 4, taking the end of the motion detection assembly 400 and the surface covering element 222 as an example, in an implementable 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 support 221 to form a connecting portion 2221, so that the surface covering element 222 is connected with the motion detection assembly 400 through the connecting portion 2221.

[0054] In an implementable embodiment, the connecting portion 2221 can be connected with the motion detection assembly 400 by plastic deformation. Specifically, as shown in Fig. 5, the end of the connecting portion 2221 away from the stator support 221 is formed with a supporting surface 22211 and a positioning connector 22212 extending from the supporting surface 22211 away from the stator support 221. Among them, the supporting surface 22211 is used to support the motion detection assembly 400, and the supporting surface 22211 is substantially perpendicular to the first axis 110, so that the supporting surface 22211 can be parallel to the motion detection assembly 400, so as to increase the contact area between the supporting surface 22211 and the motion detection assembly 400, and improve the supporting stability. The positioning connector 22212 is used to position and connect the motion detection assembly 400.

[0055] The motion detection assembly 400 is formed with a positioning hole 410 which is adapted to the positioning connector 22212. The inner profile of the positioning hole 410 is matched with the outer profile 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 adapter 2221 along the first axis 110 in the extension direction through the positioning connector 22212 matched with 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 part of the positioning connector 22212 passing through the positioning hole 410 is formed into a blocking structure extending in a direction perpendicular to the first axis 110 by plastic deformation and abutting against the side of the motion detection assembly 400 away from the support surface 22211. The blocking structure cooperates with the support surface 22211 to block the motion of the motion detection assembly 400 along the first axis 110 (e.g., the left-right direction in FIG. 2).

[0056] In the present embodiment, the plastic deformation of the part of the positioning connector 22212 passing through the positioning hole 410 is caused by the heat deformation and solidification. In actual application, the part of the positioning connector 22212 passing through the positioning hole 410 is caused to be deformed by bending after being heated, and then is caused to be deformed by heat melting, and then is caused to be deformed by solidification. Of course, the part of the positioning connector 22212 passing through the positioning hole 410 is caused to be deformed by heat melting after being heated, and then is caused to be deformed by solidification. In another alternative embodiment, the part of the positioning connector 22212 passing through the positioning hole 410 is directly caused to be deformed by stress, i.e., the permanent shape change of the part of the positioning connector 22212 passing through the positioning hole 410 caused by stress exceeding the elastic limit.

[0057] Referring again to FIG. 5, in an embodiment, the adapter 2221 has at least two adapters 2221 which are arranged at intervals around the circumference of the stator support 221 to connect the motion detection assembly 400 through the plurality of adapters 2221 to improve the stability of the connection of the motion detection assembly 400 and avoid the problem of connection failure of the motion detection assembly 400 in the environment of high-frequency vibration of the driving device. In addition, the at least two adapters 2221 are arranged at intervals, and a heat dissipation channel can be formed between the adjacent two adapters 2221 to make the heat in the stationary assembly 200 and the rotating assembly 300 pass out through the heat dissipation channel to improve the heat dissipation effect.

[0058] In another alternative embodiment, the plurality of connecting portions 2221 can also be sequentially and adjacently formed into a continuous and integral structure, for example, a continuous ring structure (O-shaped) or an open ring structure (C-shaped). Of course, part of the plurality of connecting portions 2221 can form a continuous and integral structure, and the other part of the plurality of connecting portions 2221 can be spaced apart, which is not specifically limited in the present application.

[0059] Each connecting portion 2221 is formed with the above-mentioned support surface 22211 at an end away from the stator support 221, and at least part of the connecting portions 2221 is provided with the above-mentioned positioning connector 22212. That is, each connecting portion 2221 can be formed with the support surface 22211 and the positioning connector 22212; or each connecting portion 2221 is formed with the support surface 22211, but only part of the connecting portions 2221 is formed with the positioning connector 22212. In actual application, the number of positioning connectors 22212 can be one, two, three, four or five, etc., which is not specifically limited in the present application.

[0060] As preferred, the positioning connector 22212 should be at least three, and the at least three positioning connectors 22212 are different lines. In this way, when the motion detection assembly 400 is positioned and connected to the connecting portion 2221 through the at least three positioning connectors 22212, the 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 remains in a predetermined position and prevents the motion detection assembly 400 from moving or rotating in space. At the same time, the at least three positioning connectors 22212 can help to more evenly distribute the load, reduce stress concentration or deformation of part of the positioning connectors 22212 due to load concentration, thereby causing the motion detection assembly 400 to shake or shift.

[0061] In an implementable embodiment, from the cross-sectional view of the straight line perpendicular to the first axis 110, i.e. from the cross-sectional view, the cross-sectional shape of the positioning hole 410 and the positioning connector 22212 is the same before the positioning connector 22212 produces plastic deformation, 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 shapes, which is not specifically limited in the present application. In actual application, the cross-sectional shapes of the plurality of positioning holes 410 can be the same or different, for example, when the positioning hole 410 has four, the cross-sectional shapes of the four positioning holes 410 can be sectors. Of course, one positioning hole 410 can be circular and three can be sectors.

[0062] As shown in FIG. 5 and FIG. 6, in an implementable embodiment, the plurality of positioning holes 410 can be arranged adjacent to the outer peripheral wall of the motion detection assembly 400, so that more positioning holes 410 can be arranged in the peripheral region of the motion detection assembly 400 with a larger area, so as to increase the connection points of the motion detection assembly 400 and the connecting portion 2221, provide better structural stability, and further more evenly distribute the load acting on the object, thereby reducing stress concentration.

[0063] Further, as shown in FIG. 5, the positioning holes 410 are in communication with the outer peripheral wall of the motion detection assembly 400, so that the motion detection assembly 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 substantially flush with the outer peripheral wall of the motion detection assembly 400. In this way, on the one hand, the appearance of the connection between the motion detection assembly 400 and the connecting portion 2221 can be ensured; on the other hand, the projection of the motion detection assembly 400 on the stator element 220 along the first axis 110 can be located within the range of the stator element 220, i.e., the motion detection assembly 400 is prevented from protruding outward along the radial direction of the stator element 220 to increase the overall volume of the driving device, which is conducive to the miniaturization design of the driving device. In another alternative embodiment, as shown in FIG. 6, the positioning holes 410 are not in communication with the outer peripheral wall of the motion detection assembly 400, i.e., there is a certain distance between the positioning holes 410 and the outer peripheral wall of the motion detection assembly 400.

[0064] Considering that the rotating assembly 300 needs to extend from the stator element 220 and be rotationally connected to the two ends of the housing element 210, the motion detection assembly 400 also needs to be provided with an avoidance space 420 formed by the inner peripheral wall of the motion detection assembly 400. When the motion detection assembly 400 is connected with the connecting portion 2221 of the surface covering element 222, the axis of the avoidance space 420 is substantially collinear 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 avoidance space 420.

[0065] In actual application, the motion detection assembly 400 can include a circuit board and a position sensor integrated on the circuit board, wherein the position sensor can be a laser sensor or a Hall sensor, etc., which is not specifically limited in the present application. The above-mentioned positioning holes 410 are opened on the circuit board, and the circuit board can be configured as a continuous annular structure or an open annular structure, so that the inner peripheral wall of the circuit board surrounds the above-mentioned avoidance space 420.

[0066] In another optional embodiment, the adapter 2221 can be connected with the motion detection assembly 400 through elastic deformation. Specifically, as shown in FIG. 7, the end of the adapter 2221 away from the stator support 221 is formed with an elastic buckle 22213 and a support surface 22211 for supporting the motion detection assembly 400. Correspondingly, the motion detection assembly 400 is formed with a through hole 430, when the motion detection assembly 400 is connected with the adapter 2221 along the extending direction of the first axis 110, the motion detection assembly 400 extrudes the elastic buckle 22213, so that the elastic buckle 22213 elastically deforms to pass through the through hole 430, and after the elastic buckle 22213 passes through the through hole 430, the elastic buckle 22213 restores 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 as to block the motion detection assembly 400 from moving along the extending direction of the first axis 110 under the joint action of the elastic buckle 22213 and the support surface 22211.

[0067] Further, the elastic buckle 22213 can also be used in cooperation with the positioning pin, for example, the end of the adapter 2221 away from the stator support 221 is simultaneously formed with the elastic buckle 22213 and the positioning pin, and correspondingly, the motion detection assembly 400 is simultaneously formed with the through hole 430 and the positioning hole 410 matched with the positioning pin. In this way, the motion detection assembly 400 can be positioned and matched on the adapter 2221 through the cooperation of the positioning pin and the positioning hole 410, and be connected through the elastic buckle 22213, so as to realize accurate fixing.

[0068] Again, referring to FIG. 2, in an implementable embodiment, the rotating assembly 300 can include a power output shaft 310 and a rotor element 320. The power output shaft 310 is rotatably installed on the stationary assembly 200, and the rotor element 320 is fixedly connected with the power output shaft 310. When the rotor element 320 rotates in response to the interaction of 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 with 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.

[0069] Among them, the rotor element 320, the motion feedback assembly 500 and the motion detection assembly 400 are arranged in the extending direction of the first axis 110, the motion feedback assembly 500 can be located between the rotor elements 320, or the motion feedback assembly 500 can be located on the side of the motion detection assembly 400 away from the rotor element 320, which is not specifically limited in the present application.

[0070] Please refer to FIG. 2 and FIG. 8, in an implementation, the motion feedback assembly 500 comprises a mounting base 510 and a position feedback element 520. The mounting base 510 is provided with a connecting hole 511, and the mounting base 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 base 510 is further provided with a mounting groove 512, which is arranged on the circumferential side of the connecting hole 511, and the position feedback element 520 is installed in the mounting groove 512, so that the position feedback element 520 can rotate with the power output shaft 310 through the mounting base 510. The slot of the mounting groove 512 is arranged towards the motion detection assembly 400, and the motion detection assembly 400 is used to detect the motion position of the position feedback element 520.

[0071] It is worth mentioning that the position feedback element 520 is installed on the power output shaft 310 through the mounting base 510, which can improve the installation stability of the position feedback element 520 and reduce the extrusion force of the position feedback element 520 during installation, so as to avoid damage or unstable motion of the position feedback element 520. Since the installation stability and structural stability of the position feedback element 520 are improved, the reliability of the position detection result of the motion detection assembly 400 on the position feedback element 520 can be improved, thereby improving the control effect on the brush head swinging process.

[0072] In actual application, 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 by key connection, bonding, welding, hot sleeve or cold shrink, etc. The application does not make specific limitation here.

[0073] In an implementation, the circuit board of the motion detection assembly 400 is integrated with a Hall sensor, and correspondingly, the position feedback element 520 is a magnetic element. The motion detection assembly 400 detects the motion position of the position feedback element 520 by magnetic induction to determine the motion position of the rotor element 320, thereby improving the reliability of the detection result.

[0074] In actual application, the position feedback member 520 has at least two opposite magnetic poles. Correspondingly, two Hall sensors are integrated on the circuit board of the motion detection assembly 400, and the two Hall sensors are arranged along the circumference of the first axis 110 and 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 partitioning a same magnet to form two different magnetic poles, which is not limited herein, as long as the magnetic member has two opposite magnetic poles. The two Hall sensors are respectively installed corresponding to two preset positions of the position feedback member 520, and 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.

[0075] In an implementable embodiment, the distance between the motion detection assembly 400 and the position feedback member 520 ranges from 1 mm to 3 mm. In this way, the position feedback member 520 can be detected by the Hall sensor on the motion detection assembly 400, and the motion detection assembly 400 is not interfered by the magnetic field of the position feedback member 520, thereby providing a clear output signal and ensuring the control effect of the driving device.

[0076] In an implementable embodiment, 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 configured in a ring structure to be fitted in the mounting groove 512. In actual application, the position feedback member 520 can be connected with the mounting seat 510 by bonding, so that the above structure design can increase the bonding area of the position feedback member 520 and the mounting seat 510 and improve the installation stability.

[0077] Considering that the motion feedback assembly 500 needs to perform reciprocating motion synchronously with the power output shaft 310, i.e., needs to experience high-frequency vibration in the normal working state, which makes the connection interface between the position feedback member 520 and the mounting seat 510 prone to fatigue failure. Such failure can cause the relative displacement or decoupling of the position feedback member 520 relative to the mounting seat 510, thereby affecting the accuracy and reliability of system control.

[0078] To solve the above problems, please refer to FIG. 8 and FIG. 9 again, in an implementable embodiment, the outer circumferential wall of the mounting groove 512 can be provided with a limiting block 513 extending radially inward, and the outer circumferential wall of the position feedback member 520 is formed with a limiting groove 521 matched with the limiting block 513. In this way, when the motion feedback assembly 500 needs to perform reciprocating motion synchronously with the power output shaft 310, the force can be offset by the cooperation of the limiting block 513 and the limiting groove 521, so as to reduce the stress of the connecting interface between the position feedback member 520 and the mounting seat 510, and reduce the possibility of fatigue damage of the connecting interface between the position feedback member 520 and the mounting seat 510. At the same time, during the installation of the position feedback member 520 into the mounting groove 512, the installation can be performed by referring to the limiting block 513, so as to avoid the installation error affecting the accuracy of system control.

[0079] In another optional embodiment, as shown in FIG. 10, the inner circumferential wall of the mounting groove 512 is provided with a limiting groove 521 extending radially inward, and the outer circumferential wall of the position feedback member 520 is formed with a limiting block 513 matched with the limiting groove 521.

[0080] In another optional embodiment, as shown in FIG. 11, the outer circumferential wall of the mounting groove 512 is provided with a limiting groove 521 extending radially outward, and the outer circumferential wall of the position feedback member 520 is formed with a limiting block 513 matched with the limiting groove 521.

[0081] In another optional embodiment, as shown in FIG. 12, the inner circumferential wall of the mounting groove 512 is provided with a limiting block 513 extending radially outward, and the outer circumferential wall of the position feedback member 520 is formed with a limiting groove 521 matched with the limiting block 513.

[0082] It should be noted that the limiting block 513 and the limiting groove 521 can have at least one or multiple, which is not limited in the present application.

[0083] As shown in FIG. 13, in an implementable embodiment, the outer circumferential wall of the stator element 220 of the stationary assembly 200 is formed with an anti-rotation groove 223 extending in the direction parallel to the first axis 110, and the anti-rotation groove 223 penetrates through the opposite ends of the stator element 220 along the first axis 110. The inner circumferential wall of the outer housing 211 of the stationary assembly 200 is formed with an anti-rotation protrusion 2111 matched with the anti-rotation groove 223. When the stator element 220 is positioned and installed into the outer housing 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 block the rotation of the stator element 220 relative to the outer housing 211, thereby reducing the noise generated by the driving device.

[0084] Meanwhile, the cooperation between the anti-rotation groove 223 and the anti-rotation protrusion 2111 can also receive part of the force tending to rotate the stator element 220 relative to the outer housing 211, so as to reduce the force on the connection interface between the stator element 220 and the outer housing 211, and reduce the possibility of fatigue damage of the connection interface between the stator element 220 and the outer housing 211, thereby ensuring the relative position of the motion detection assembly 400 and the motion feedback assembly 500 installed on the stator element 220, and improving the accuracy of system control.

[0085] In actual application, the surface covering element 222 can only cover the inner wall of the coil groove of the stator support 221 and the end face of the stator support 221, and will not be involved in the outer peripheral wall of the stator support 221. Therefore, the anti-rotation groove 223 can be directly formed on the outer peripheral wall of the stator support 221, so as to improve the connection stability of the stator element 220 and the outer housing 211 by using the high-strength characteristics of the stator support 221. The anti-rotation groove 223 can have one or more. When the anti-rotation groove 223 has multiple, the multiple anti-rotation grooves 223 are arranged at intervals along the circumferential direction 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.

[0086] Please refer to Fig. 2 again. In an implementable embodiment, the outer housing element 210 of the stationary assembly 200 is provided with bearings at both ends (e.g. the left end and the right end in Fig. 2) along the extension direction of the first axis 110. The power output shaft 310 of the rotating assembly 300 is rotationally connected to the outer housing element 210 through the two bearings, and the rotor element 320 of the rotating assembly 300 is located in the stationary assembly 200. The power output shaft 310 is sleeved with a tensioning element 600, which has elastic characteristics, and the tensioning element 600 is compressed between the rotor element 320 and one of the bearings. In this way, the elastic characteristics of the tensioning element 600 can provide necessary preload to maintain the close fit between the bearing and the rotor element 320, reduce axial movement, avoid the influence of the detection effect of the motion detection component, and improve the operation accuracy of the driving device.

[0087] In actual application, the tensioning element 600 can adopt an elastic structure such as a spring or a rubber sleeve, which is not limited in the present application.

[0088] Further, the tensioning element 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, which realizes the rationalization and optimization of the internal space of the driving mechanism through distributed layout. Meanwhile, arranging the tensioning element 600 and the motion detection component at both ends along the first axis 110 helps to reduce the potential electromagnetic interference of the tensioning element on the detection accuracy of the motion detection unit.

[0089] In an implementable embodiment, the power output shaft 310 can have an axial channel 311 extending 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 in communication with 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 not only transmit power to drive the brush head to oscillate, but also be used as a flow channel for liquid and transmit liquid to the brush head, thereby achieving the functions of both rinsing and brushing to meet the user's expectation of using a rinsing device in combination with a toothbrush.

[0090] In actual applications, the fluid inlet and the fluid outlet are usually located at the two ends of the power output shaft 310, and their opening directions can be towards the circumferential surface or the end surface of the power output shaft 310.

[0091] As shown in FIG. 14, based on the same inventive concept, the present application also provides a brush handle assembly. Specifically, the brush handle assembly can at least include a holding shell 710, and an energy storage component 720 and the above-mentioned driving device for oral cleaning installed in the holding shell 710. The energy storage component 720 is electrically connected with the driving device, and the power output shaft 310 of the driving device extends out of the holding shell 710.

[0092] In actual applications, in order to facilitate user holding, the holding shell 710 can be shaped like an elongated body, and the cross-sectional shape of the holding shell 710 can be circular or non-circular (such as D-shaped, oval, polygonal, etc.). The specific structure of the energy storage component 720 can refer to the existing battery, which will not be described here.

[0093] In an implementable embodiment, the above-mentioned brush handle assembly can be applied to an oral cleaner such as an electric toothbrush as a power part and a holding part. When the brush handle assembly is applied to an oral cleaner, the power output shaft 310 of the brush handle assembly is detachably connected with a care head 750 (such as a toothbrush head or other accessories with bristles) to drive the care head 750 to move by the power output shaft 310.

[0094] Further, as shown in FIG. 2 and FIG. 15, the brush handle assembly can also be integrated with a swing and flush function, and be applied to a flush-all-in-one machine. Specifically, the brush handle assembly further comprises a liquid storage chamber 730 and a fluid pumping unit 740 in the holding housing 710. The power output shaft 310 has an axial channel 311, a fluid inlet and a fluid outlet in communication with the axial channel 311. The fluid inlet of the axial channel 311 is in communication with the liquid storage chamber 730, and the fluid pumping unit 740 is connected in series on the flow channel of the liquid storage chamber 730 and the fluid inlet of the axial channel 311, so that the fluid pumping unit 740 can extract the fluid in the liquid storage chamber 730 and flow out from the fluid outlet of the axial channel 311 through the axial channel 311.

[0095] In an implementable embodiment, the brush handle assembly can be applied to a flush-all-in-one machine and other oral cleaning devices. When the brush handle assembly is applied to an oral cleaning device, the care head 750 (such as a flush-all-in-one head or other accessories with bristles) of the oral cleaning device has a fluid channel 751 and a fluid outlet 752 in communication with the fluid channel 751. The power output shaft 310 is connected with the care head 750 and drives the care head 750 to perform displacement movement, and the fluid outlet of the axial channel 311 is in communication with the fluid channel 751, and the oral cleaning device outputs water flow through the fluid outlet 752.

[0096] It should be noted that the specific structure of the driving device can refer to the above description, and the present application will not be repeated here.

[0097] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A drive device for oral cleaning, characterized in that The driving device for oral cleaning comprises at least a driving body and a motion detecting component, wherein, The driving body extending along the first axis (110) comprises a static component (200) and a rotating component (300), the rotating component (300) is rotatably installed on the static component (200), the static component (200) at least partially surrounds the rotating component (300), the static component (200) is formed with an accommodating cavity (120), at least one end of the rotating component (300) extends along the first axis (110) and protrudes to the outside of the static component (200); The motion detecting component at least partially located in the accommodating cavity (120) comprises a motion detecting component (400) and a motion feedback component (500), wherein, the motion feedback component (500) is connected with the rotating component (300) and rotates with the rotating component (300), the motion detecting component (400) is directly connected with the static component (200), the motion detecting component (400) detects the motion position of the rotating component (300) through the motion feedback component (500).

2. The drive device for oral cleaning according to claim 1, characterized in that, The static component (200) comprises a shell element (210) and a stator element (220) accommodated in the shell element (210); The stator element (220) is fixedly connected with the shell element (210), and the motion detecting component is located at one end of the stator element (220) along the first axis (110).

3. The drive device for oral cleaning according to claim 2, characterized in that, The shell element (210) comprises a shell body (211) and a back cover (212); The shell body (211) is configured as a cylindrical structure, and one end of the shell body (211) is formed with an opening (213); The back cover (212) is connected with the shell body (211) and at least partially covers the opening (213), and the motion detecting component is located at one end of the stator element (220) adjacent to the back cover (212).

4. The drive device for oral cleaning according to claim 2, characterized in that, The shell element (210) comprises a shell body (211) and a back cover (212); The shell body (211) is configured as a cylindrical structure, and one end of the shell body (211) is formed with an opening (213); The back cover (212) is connected with the shell body (211) and at least partially covers the opening (213), and the motion detecting component is located at one end of the stator element (220) away from the back cover (212). The stator element (220) comprises a stator support (221), and the motion detecting component (400) is connected with the stator support (221) or the shell body (211).

5. Drive device for oral cleaning according to claim 3 or 4, characterized in that The stator element (220) comprises a stator support (221) and a surface covering element (222); 6. The drive device for oral cleaning according to claim 2, characterized by The surface covering element (222) at least partially covers the stator support (221), and the motion detecting component (400) is connected with the surface covering element (222). ​ 7. The drive 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 support (221) to form a connecting portion (2221), so that the surface covering element (222) is connected with the motion detection assembly (400) through the connecting portion (2221).

8. The drive device for oral cleaning according to claim 7, characterized in that, The connecting portion (2221) is formed with a supporting surface (22211) supporting the motion detection assembly (400) at one end away from the stator support (221), and a positioning connector (22212) extending away from the stator support (221) from the supporting surface (22211); The motion detection assembly (400) is formed with a positioning hole (410) matched with the positioning connector (22212), when the motion detection assembly (400) is positioned and installed to the connecting portion (2221) through the positioning connector (22212) and the positioning hole (410) matched in the extending direction of the first axis (110), the motion detection assembly (400) abuts against the supporting surface (22211), and the part 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 the side of the motion detection assembly (400) away from the supporting surface (22211), so as to block the motion of the motion detection assembly (400) in the extending direction of the first axis (110).

9. The drive device for oral cleaning according to claim 8, characterized in that, The part of the positioning connector (22212) passing through the positioning hole (410) is plastically deformed by force or deformation and solidification due to heat.

10. The drive device for oral cleaning according to claim 8, characterized in that, The connecting portion (2221) has at least two, and the at least two connecting portions (2221) are arranged at intervals around the circumference of the stator support (221); Each of the connecting portions (2221) is formed with the supporting surface (22211) for supporting the motion detection assembly (400) at one end away from the stator support (221), and at least part of the connecting portions (2221) is provided with the positioning connector (22212) extending away from the stator support (221) from the supporting surface (22211).

11. The drive device for oral cleaning according to claim 10, wherein From the cross section of a straight line perpendicular to the first axis (110), the cross-sectional shape of the positioning hole (410) and the positioning connector (22212) is the same before the positioning connector (22212) is plastically deformed, and is at least one of a circle, a rectangle, a sector, and an ellipse.

12. The drive device for oral cleaning according to claim 10, characterized by, The positioning hole (410) is arranged adjacent to the outer peripheral wall of the motion detection assembly (400); The positioning hole (410) is in communication with the outer peripheral wall of the motion detection assembly (400), and 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 drive device for oral cleaning according to claim 10, characterized by, The positioning hole (410) is arranged adjacent to the outer peripheral wall of the motion detection assembly (400), and the positioning hole (410) is not in communication with the outer peripheral wall of the motion detection assembly (400).

14. The drive device for oral cleaning according to claim 12, characterized by, The inner peripheral wall of the motion detection assembly (400) surrounds a clearance space (420); When the motion detection assembly (400) is connected with the connecting part (2221) of the surface covering element (222), the axis of the clearance space (420) is collinear with the axis of the rotating assembly (300), so that the rotating assembly (300) can at least partially extend out of the stator element (220) through the clearance space (420).

15. The drive device for oral cleaning according to claim 7, characterized by, The connecting part (2221) is formed with an elastic buckle (22213) and a supporting surface (22211) for supporting the motion detection assembly (400) at one end away from the stator support (221); The motion detection assembly (400) is formed with a through hole (430), when the motion detection assembly (400) is connected with the connecting part (2221) along the extension direction of the first axis (110), the motion detection assembly (400) extrudes the elastic buckle (22213), the elastic buckle (22213) elastically deforms to pass through the through hole (430), and after the elastic buckle (22213) passes through the through hole (430), the elastic buckle (22213) restores to the initial state to be buckled on the side of the motion detection assembly (400) away from the supporting surface (22211), and the motion detection assembly (400) abuts against the supporting surface (22211) to block the motion of the motion detection assembly (400) along the extension direction of the first axis (110).

16. The drive 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), the power output shaft (310) is rotatably installed on the stationary assembly (200), and the rotor element (320) is fixedly connected with the power output shaft (310); The motion feedback assembly (500) is fixedly connected with 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), or the motion feedback assembly (500) is located on the side of the motion detection assembly (400) away from the rotor element (320).

17. Drive device for oral cleaning according to claim 16, characterized in that The motion feedback assembly (500) comprises a mounting seat (510) and a position feedback element (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 arranged on the circumferential side of the connecting hole (511), and the opening of the mounting groove (512) faces the motion detection assembly (400); The position feedback element (520) is installed in the mounting groove (512) and rotates with the rotating assembly (300). The distance between the motion detection assembly (400) and the position feedback element (520) ranges from 1mm to 3mm.

18. The drive device for oral cleaning according to claim 17, characterized in that, The mounting groove (512) extends around the axis of the connecting hole (511) to form a continuous ring, and the position feedback element (520) is configured in a ring structure to be fitted in the mounting groove (512).

19. The drive device for oral cleaning according to claim 17, characterized in that, The outer peripheral wall of the mounting groove (512) is provided with a limiting block (513) extending radially inward, and the outer peripheral wall of the position feedback element (520) is formed with a limiting groove (521) matched with the limiting block (513); 20. The drive device for oral cleaning according to claim 19, characterized in that, Alternatively, the inner peripheral wall of the mounting groove (512) is provided with a limiting groove (521) extending radially inward, and the outer peripheral wall of the position feedback element (520) is formed with a limiting block (513) matched with the limiting groove (521); Alternatively, the outer peripheral wall of the mounting groove (512) is provided with a limiting groove (521) extending radially outward, and the outer peripheral wall of the position feedback element (520) is formed with a limiting block (513) matched with the limiting groove (521); Alternatively, the inner peripheral wall of the mounting groove (512) is provided with a limiting block (513) extending radially outward, and the outer peripheral wall of the position feedback element (520) is formed with a limiting groove (521) matched with the limiting block (513). The outer peripheral wall of the stator element (220) of the stationary assembly (200) is formed with an anti-rotation groove (223), the anti-rotation groove (223) extends in a direction parallel to the first axis (110), and the anti-rotation groove (223) penetrates through the stator element (220) and extends along the opposite ends of the first axis (110); 21. The drive device for oral cleaning according to any one of claims 1 to 4, characterized in that, ​ The inner circumferential wall of the outer housing (211) of the stationary assembly (200) is formed with an anti-rotation protrusion (2111) matched with the anti-rotation groove (223), when the stator element (220) is positioned and installed into the outer housing (211) through the anti-rotation groove (223) and the anti-rotation protrusion (2111), the anti-rotation groove (223) is matched with the anti-rotation protrusion (2111) to block the stator element (220) from rotating relative to the outer housing (211).

22. The drive device for oral cleaning according to any one of claims 1 to 4, characterized in that, The outer housing element (210) of the stationary assembly (200) is respectively installed with bearings at both ends along the extension direction of the first axis (110); The power output shaft (310) of the rotating assembly (300) is rotationally connected with the outer 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 between the rotor element (320) and one of the bearings.

23. The drive device for oral cleaning according to claim 1, characterized by, The rotating assembly (300) comprises a power output shaft (310) rotationally installed in the stationary assembly (200); The power output shaft (310) has an axial channel (311), and a fluid inlet and a fluid outlet in communication with the axial channel (311).

24. A handle assembly comprising: The brush handle assembly at least comprises a holding housing (710), and an energy storage component (720) and the driving device for oral cleaning according to any one of claims 1 to 22 installed in the holding housing (710); The energy storage component (720) is electrically connected with the driving device, and the power output shaft (310) of the driving device extends out of the holding housing (710).

25. The brush handle assembly of claim 24, wherein, The brush handle assembly further comprises a liquid storage chamber (730) and a fluid pumping unit (740) located in the holding housing (710); Therefore, the power output shaft (310) has an axial channel (311), and a fluid inlet and a fluid outlet in communication with the axial channel (311), the fluid inlet of the axial channel (311) is capable of communicating with the liquid storage chamber (730), and the fluid pumping unit (740) is connected in series on the flow channel communicating 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 flow out of the fluid outlet of the axial channel (311) through the axial channel (311).

26. An oral cleaner characterized by, The oral care device at least comprises 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 cleaner characterized by, The oral care device at least comprises a care head (750) and the brush handle assembly according to claim 25; The care head (750) has a fluid passage (751) and a flow outlet (752) in communication with the fluid passage (751), the power output shaft (310) is connected with the care head (750) and drives the care head (750) to perform displacement movement, and the fluid outlet of the axial passage (311) is in communication with the fluid passage (751), and the oral cleaner outputs water flow through the flow outlet (752).

Images