Personal care device and cleaning part

Abstract

Provided is a personal care device, wherein the personal care device comprises a cleaning part (1), a holding part (2), and a transmission mechanism. The cleaning part (1) comprises at least two cleaning units (11, 12). The holding part (2) comprises a driving unit and a control unit accommodated therein, the driving unit being configured to output an initial motion in response to one or a plurality of control signals sent by the control unit. The transmission mechanism attached to the driving unit is in transmission connection with the cleaning units (11, 12), and is configured to transmit the initial motion output by the driving unit to the cleaning units (11, 12), such that the at least two cleaning units (11, 12) move in two motion modes, respectively. The personal care device enable the at least two cleaning units (11, 12) to move in two motion modes, and achieve deep and efficient cleaning for various cleaning surfaces / grooves / crevices and other areas of the oral cavity, thereby meeting diverse cleaning needs inside the oral cavity.

Description

A personal care device and cleaning part

[0001] The present application claims priority to the Chinese patent application No. 202411378103.1, filed on September 29, 2024, and entitled "A personal care device and cleaning part", the whole content of which is incorporated herein by reference. TECHNICAL FIELD

[0002] The present disclosure relates to the technical field of electrical appliances, and more particularly, the present disclosure relates to a personal care device and cleaning part. BACKGROUND

[0003] Most of the electric toothbrushes on the current market adopt open-loop direct drive control technology, such as eccentric wheel motor, sonic motor and linear motor, to drive the brush head to perform high-frequency reciprocating vibration or rotary motion for oral cleaning.

[0004] In the face of the diversified cleaning needs inside the oral cavity, such as different shapes and positions of different areas such as interdental spaces, tooth surfaces and grooves, the cleaning needs are naturally different, and the single function brush head configuration of the existing products is difficult to meet.

[0005] SUMMARY

[0006] Therefore, the embodiments of the present disclosure provide a personal care device and cleaning part to solve the technical defects in the prior art.

[0007] To achieve the above-mentioned purpose, the present disclosure adopts the following technical solutions:

[0008] According to a first aspect of the present disclosure, the present disclosure provides a personal care device, comprising:

[0009] a cleaning part, the cleaning part comprising at least two cleaning units;

[0010] a holding part, the holding part comprising a drive unit and a control unit accommodated therein, the drive unit being configured to output an initial motion in response to one or more control signals sent by the control unit;

[0011] a transmission mechanism attached to the drive unit, in transmission connection with the cleaning units, and configured to convert the initial motion output by the drive unit to at least one cleaning unit to drive the at least two cleaning units to move in two different motion modes respectively.

[0012] In an embodiment of the present disclosure, the personal care device further comprises:

[0013] the control unit is configured to determine a driving parameter in response to a trigger signal;

[0014] The driving unit is configured to output an initial motion based on a driving parameter determined by the control unit.

[0015] In one embodiment of the present disclosure, the personal care device further comprises a sensing unit electrically connected to the control unit, the control unit being configured to adjust the driving parameter by an electrical signal of the sensing unit, so that the driving unit maintains the initial motion state.

[0016] In one embodiment of the present disclosure, the driving unit comprises a driving shaft, and the driving parameter comprises, but is not limited to, a driving shaft rotation angle, a driving shaft rotation direction, a driving shaft reciprocating rotation frequency, and / or a driving shaft target position.

[0017] In one embodiment of the present disclosure, the initial motion is a multi-modal motion, including but not limited to an x-y axis compound motion, a circumferential-axial compound motion, and a two-circumferential compound motion, wherein the x-y axis compound motion is an independent or coordinated compound motion in the x-axis and y-axis directions, the circumferential-axial compound motion is an independent or coordinated compound motion of a rotation motion and a displacement motion in a preset axial extension direction, and the two-circumferential compound motion is a motion along two circumferential paths.

[0018] In one embodiment of the present disclosure, the transmission mechanism comprises at least a first transmission unit and a second transmission unit, and the cleaning part comprises at least a first cleaning unit and a second cleaning unit.

[0019] The first transmission unit converts the initial motion into a first motion to drive the first cleaning unit to perform a first cleaning action.

[0020] The second transmission unit converts the initial motion into a second motion or transmits the initial motion to the second cleaning unit to drive the second cleaning unit to perform a second cleaning action.

[0021] The motion modalities of the first cleaning unit and the second cleaning unit are different.

[0022] In one embodiment of the present disclosure, the first motion and the second motion at least include one of the following differences: different motion paths, different motion frequencies, different reciprocating motion angles, and different motion strokes; and / or,

[0023] The motion modalities of the first cleaning unit and the second cleaning unit at least include one of the following differences: different motion paths, different motion frequencies, different reciprocating motion angles, and different motion strokes; and / or,

[0024] The motion modalities of the first cleaning action and the second cleaning action at least include one of the following differences: different motion paths, different motion frequencies, different reciprocating motion angles, and different motion strokes.

[0025] In one embodiment of the present disclosure, the first transmission unit and the second transmission unit are integrally formed or are assembled to form a transmission mechanism.

[0026] In one embodiment of the present disclosure, the first transmission unit and the second transmission unit are respectively in transmission connection with the driving unit, and the first transmission unit and the second transmission unit are independently driven.

[0027] In one embodiment of the present disclosure, the motion path includes but is not limited to: a pivoting path, a reciprocating rotation path, a tapping motion path, a reciprocating vibration path, a reciprocating sweeping path, a transverse linear motion, a longitudinal linear motion, and / or a pendulum motion, wherein the pivoting path is a path of rotation around a fulcrum or a pivot, the tapping motion path is the motion trajectory of the tapping point from the tapping point to the contact point, the transverse linear motion is a transverse motion based on the extension axis of the personal care device or the driving unit, and the longitudinal linear motion is a longitudinal motion based on the extension axis of the personal care device or the driving unit.

[0028] In one embodiment of the present disclosure, the cleaning portion further comprises one or more receiving units cooperating with the transmission mechanism, and the one or more receiving units are driven by the transmission mechanism to drive the one or more cleaning units to perform cleaning actions.

[0029] In one embodiment of the present disclosure, the transmission structure is configured to transmit the initial motion to one of the plurality of cleaning units to make the one cleaning unit perform a cleaning action.

[0030] In one embodiment of the present disclosure, the initial motion is a periodic motion, and the periodic motion at least includes one or more parameter different motion combinations: driving shaft rotation angle, driving shaft rotation direction, and driving shaft reciprocating rotation frequency.

[0031] According to a second aspect of the present disclosure, the present disclosure provides a cleaning portion connected with a driving unit in a holding portion for cleaning the oral cavity, the cleaning portion comprising: at least two cleaning units; a transmission mechanism configured to be in transmission connection with the cleaning units and configured to convert an initial motion output by the driving unit to at least one cleaning unit to make at least two cleaning units move in two motion modalities, respectively.

[0032] In one embodiment of the present disclosure, the transmission mechanism comprises at least a first transmission unit and a second transmission unit, and the cleaning part comprises at least a first cleaning unit and a second cleaning unit;

[0033] The first transmission unit converts the initial motion into a first motion, and drives the first cleaning unit to perform a first cleaning action.

[0034] The second transmission unit converts the initial motion into a second motion or transmits the initial motion to the second cleaning unit, and drives the second cleaning unit to perform a second cleaning action.

[0035] The first cleaning unit and the second cleaning unit have different motion modalities.

[0036] In one embodiment of the present disclosure, the first motion and the second motion differ at least in one of the following aspects: different motion paths, different motion frequencies, different reciprocating motion angles, and different motion strokes.

[0037] In one embodiment of the present disclosure, the first transmission unit and the second transmission unit are integrally formed or are joined and assembled to form the transmission mechanism.

[0038] In one embodiment of the present disclosure, the first transmission unit and the second transmission unit are respectively in transmission connection with the driving unit, and the first transmission unit and the second transmission unit are independently driven.

[0039] In one embodiment of the present disclosure, the motion path includes but is not limited to a pivoting path, a reciprocating rotation path, a knocking motion path, a reciprocating vibration path, a reciprocating sweeping path, a transverse linear motion, a longitudinal linear motion, and / or a pendulum motion, wherein the pivoting path is a path of rotation around a fulcrum or a pivot, the knocking motion path is a motion trajectory of a knocking point from a knocking point to a contact point, the transverse linear motion is a transverse motion based on an extension axis of the personal care device or the driving unit, and the longitudinal linear motion is a longitudinal motion based on the extension axis of the personal care device or the driving unit.

[0040] In one embodiment of the present disclosure, the cleaning part further comprises one or more receiving units cooperating with the transmission mechanism, and the one or more receiving units are driven by the transmission mechanism to drive the one or more cleaning units to perform a cleaning action.

[0041] The personal care device provided by the present disclosure comprises a cleaning part, a holding part, and a transmission mechanism, through which the initial motion output by the driving unit is converted to at least one cleaning unit, so that the at least two cleaning units can move in two motion modes, realizing deep and efficient cleaning of various cleaning surfaces / grooves and other areas in the oral cavity, thereby meeting the diversified cleaning needs of the oral cavity.

[0042] The cleaning unit provided by the present disclosure can realize multi-mode motion mode, realizing more efficient and comprehensive cleaning.

[0043] Other features and advantages of the present disclosure will become apparent from the following detailed description of exemplary embodiments thereof, which description should be taken in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0044] Fig. 1 is a module diagram of a personal care device provided by another embodiment of the present disclosure;

[0045] Fig. 2 is a partial structural schematic diagram of a personal care device provided by another embodiment of the present disclosure;

[0046] Fig. 3 is a motion state schematic diagram of a personal care device provided by an embodiment of the present disclosure;

[0047] Fig. 4 is a partial structural schematic diagram of a personal care device provided by another embodiment of the present disclosure;

[0048] Fig. 5 is a motion state schematic diagram of a personal care device provided by another embodiment of the present disclosure;

[0049] Fig. 6 is a partial structural schematic diagram of a personal care device provided by another embodiment of the present disclosure;

[0050] Fig. 7 is a motion state schematic diagram of a personal care device provided by another embodiment of the present disclosure;

[0051] Fig. 8 is a partial structural schematic diagram of a personal care device provided by another embodiment of the present disclosure;

[0052] Fig. 9 is a motion state schematic diagram of a personal care device provided by another embodiment of the present disclosure;

[0053] Fig. 10 is a motion state schematic diagram of a personal care device provided by another embodiment of the present disclosure;

[0054] Fig. 11 is a structural schematic diagram of a holding part of a personal care device provided by another embodiment of the present disclosure. 1 - cleaning part; 11 - first cleaning unit; 12 - second cleaning unit; 2 - holding part; 3 - brush head body; 41 - first transmission unit; 42 - second transmission unit; 5 - limiting part; 6 - rotating shaft; 7 - eccentric cylinder; 8 - spring; 9 - servo motor; 10 - main control board; 13 - battery; 14 - button. DETAILED DESCRIPTION

[0055] The present disclosure provides a personal care device, which comprises a cleaning part, a holding part and a transmission mechanism. The holding part is configured to be suitable for holding, which can include a housing and a driving unit, a control unit and other components such as a circuit board, a power supply and the like located in the housing. The cleaning part comprises at least two cleaning units, which can be brush heads or other devices with care functions.

[0056] The cleaning part is configured to be mounted with the holding part, so that the cleaning units are in transmission connection with the driving unit through the transmission mechanism. The cleaning part is mounted on the holding part in a detachable manner, so that the cleaning part can be replaced when it is worn out or reaches the end of its service life. The driving unit is configured to output an initial motion in response to one or more control signals sent by the control unit, and the transmission mechanism converts the initial motion output by the driving unit into a motion with a different motion mode from that of the initial motion for at least one cleaning unit, and also converts the initial motion output by the driving unit into a motion with a different motion mode for at least another cleaning unit or directly transmits the initial motion to at least another cleaning unit, so as to drive the at least two cleaning units to move in two motion modes respectively, so that the at least two cleaning units correspondingly perform cleaning actions. The motion modes of at least two of the plurality of cleaning units are different, the corresponding cleaning actions are different, and the motion mode of at least one cleaning unit is different from that of the initial motion.

[0057] The motion mode of the present disclosure refers to the form, state, posture or mode of the motion of the cleaning unit, which can be different in motion direction, different in motion mode, different in motion parameters, etc. As long as the two cleaning units do not maintain the same motion mode at the same time, they are within the scope of the present disclosure, which will not be listed one by one here.

[0058] In an embodiment of the present disclosure, the transmission structure is further configured to transmit the initial motion to one or more of the at least two cleaning units, so that the one or more cleaning units perform the cleaning action. Specifically, the transmission structure can not convert the motion mode of the initial motion, but only transmit the motion, so that one or more of the at least two cleaning units maintain the same motion mode as the initial motion and perform the cleaning action. Thus, among the cleaning units included in the cleaning part, at least one cleaning unit performs a cleaning action different from the motion mode of the initial motion, and at least one cleaning unit performs a cleaning action identical to the motion mode of the initial motion, the motion modes of the two cleaning units are different, which can provide more in-depth and more adaptive cleaning for the user's oral cavity.

[0059] As an implementation, the transmission structure converts the initial motion of the driving unit into at least one same or different target motion, which is different from the motion mode of the initial motion, so as to drive the motion of at least one cleaning unit, which performs a cleaning action, and the motion mode of the at least one cleaning unit is different from the initial motion; at the same time, the transmission structure also directly transmits the initial motion of the driving unit to other cleaning units, which can be one or more, so as to drive the other cleaning units to perform a cleaning action, and the motion mode of the other cleaning units is the same as the initial motion. As another implementation, the transmission structure converts the initial motion of the driving unit into at least two different target motions, so as to drive the motion of at least two cleaning units, which perform different cleaning actions, and the motion mode of the at least two cleaning units is different from the initial motion and different from each other.

[0060] Compared with the traditional single motion mode, the cleaning units with different motion modes can simultaneously perform deep cleaning on different to-be-cleaned parts, solve the problem of cleaning blind area or low cleaning efficiency caused by different positions and shapes of the to-be-cleaned parts, and meet the diversified cleaning needs of users. In addition, the motion mode can be selected according to the shape and position of the to-be-cleaned part, so as to improve the cleaning efficiency and cleaning effect and improve the cleaning experience of users.

[0061] The cleaning part provided by the present disclosure includes at least two cleaning units and a transmission structure, the transmission structure is in transmission connection with the cleaning units, and converts the initial motion output by the driving unit into a motion different from the motion mode of the initial motion to the at least one cleaning unit, so that the at least two cleaning units move in two motion modes respectively.

[0062] For ease of understanding, the specific structure and working principle of the personal care device and the cleaning part of the present disclosure will be described in detail below with reference to FIGS. 1-11 in combination with an embodiment. The present disclosure provides a personal care device, which can be an electric toothbrush, a massager, a facial cleaner or other personal care devices known to those skilled in the art.

[0063] As shown in FIG. 1, the personal care device of the present disclosure includes a cleaning part, a holding part and a transmission mechanism.

[0064] The cleaning part of the present disclosure comprises a cleaning part body and at least two cleaning units arranged on the cleaning part body, which can clean the same or different cleaning areas. The user holds the grip part still or moves, and the cleaning units can continuously or discontinuously clean the surface of the cleaning part. In the embodiment shown in FIG. 1, two cleaning units are arranged, which are respectively referred to as the first cleaning unit and the second cleaning unit. The first cleaning unit and the second cleaning unit are arranged on the cleaning part body, and the movement modes of the first cleaning unit and the second cleaning unit on the cleaning part body are different.

[0065] In the embodiment of the personal care device of the present disclosure as an electric toothbrush, the cleaning unit is a brush head unit provided with bristles, each of which can work independently or cooperatively to clean different tooth surfaces and gaps. The design and arrangement of the bristles can optimize the cleaning effect, and bristles of different hardness or shape can also be used to meet different cleaning needs, which are not specifically limited in the present disclosure. When the personal care device of the present disclosure is a facial massager or a fascia gun, the cleaning unit is a movable massage head, and the surface of the massage head can be provided with soft material to avoid damaging the user's skin during cleaning.

[0066] The movement mode of the present disclosure refers to the form, state, posture or mode of movement, which can be different in movement direction, different in movement mode, different in movement parameters, etc. For example, the first cleaning unit is rotationally connected to the cleaning part body and can rotate around the central axis on the cleaning part body; the second cleaning unit is configured to move linearly on the cleaning part body, which makes the movement postures of the two cleaning units different. For another example, the first cleaning unit and the second cleaning unit are both rotationally connected to the cleaning part body, but the rotation directions of the two cleaning units are different, or the rotation speeds are different, etc. For another example, the first cleaning unit and the second cleaning unit are configured to swing on the cleaning part body, but the swinging directions of the two cleaning units are different, or the swinging amplitudes, the swinging frequencies are different, etc. As long as the two cleaning units do not maintain the same movement mode, they are within the scope of the present disclosure, which will not be listed one by one here.

[0067] With continued reference to FIG. 1, the holding portion can include a housing and a drive unit, a control unit, a circuit board, a power supply and other components contained in the housing. The drive unit is configured to output an initial motion in response to one or more control signals sent by the control unit. The cleaning portion is configured to be mounted with the holding portion via a transmission mechanism, whereby the cleaning unit can be in transmission connection with the drive unit via the transmission mechanism. The transmission mechanism is in transmission connection with the drive unit of the holding portion. As an embodiment, the transmission mechanism can be detachably mounted on the drive shaft of the drive unit via a buckle or other structure. In addition, the transmission mechanism can be arranged in the cavity of the cleaning portion body and extend into the cleaning unit in the cavity. As an embodiment, part of the components of the transmission mechanism can be arranged on or assembled with the cleaning unit, such as on the side opposite to the cleaning surface of the cleaning unit or on the back plate. In an embodiment of the present disclosure, the cleaning portion is mounted on the holding portion in a detachable manner, whereby the cleaning portion can be replaced when it is worn out or reaches the end of its service life.

[0068] Specifically, the holding portion is a part for the user to hold, and the interior of the holding portion contains a drive unit for generating an original power output and a control unit for receiving user input (such as switch button operation) or a preset program and generating a control signal according to the user input or the preset program to control the working state and mode of the drive unit.

[0069] The transmission mechanism of the present disclosure is in transmission connection with the cleaning unit and is configured to convert the initial motion output by the drive unit to at least one cleaning unit to make at least two cleaning units move in two motion modalities, respectively.

[0070] The drive unit converts the output initial motion to a motion different from the motion modality of the initial motion to at least one cleaning unit via the transmission mechanism, converts the output initial motion to a motion different from the motion modality of the initial motion to at least another cleaning unit or directly transmits the output initial motion to at least another cleaning unit, so that at least two cleaning units move in two motion modalities, respectively. Specifically, the transmission mechanism transmits and converts the initial motion output by the drive unit to the cleaning unit, so that the cleaning unit can move in two motion modalities, such as rotary motion or reciprocating motion, etc., thereby achieving the effect of comprehensive cleaning.

[0071] Compared with a traditional single motion mode, the personal care device can simultaneously perform deep cleaning on different to-be-cleaned parts through the cleaning units of different motion modes, solve the problem of cleaning blind spots or low cleaning efficiency caused by different positions and shapes of the to-be-cleaned parts, and meet the diversified cleaning needs of users. In addition, the motion mode can be selected according to the shape and position of the to-be-cleaned part, so as to improve the cleaning efficiency and cleaning effect and improve the cleaning experience of the user.

[0072] The oral cavity region of the human body has a complex structure, including tooth side surfaces, masticatory surfaces, and grooves. Due to the differences in the surface shape, position, and space limitation of the teeth, in order to achieve a better cleaning effect, the brush head shape and cleaning motion mode required for cleaning each region have diversity and specificity. However, the mainstream electric toothbrushes currently mainly realize full-effect cleaning coverage of multiple regions through the combination design of a single brush head or the provision of multiple specific brush head assemblies. The former scheme still has limited contact effect on particularly narrow groove regions, and the latter scheme needs to replace the cleaning assembly during the cleaning process, which is complicated and complex to operate and cannot meet the full-effect and efficient cleaning needs of different regions of the oral cavity.

[0073] In one embodiment of the present disclosure, the cleaning part further comprises one or more receiving units cooperating with the transmission mechanism, and the one or more receiving units are connected with the one or more cleaning units and driven by the transmission mechanism to drive the one or more cleaning units to perform cleaning actions. Specifically, the transmission mechanism converts the initial motion into one or more target motions and outputs the target motions to the receiving units, and the receiving units are driven by the target motions to drive the cleaning units to move. Of course, the transmission mechanism can also output the initial motion to the receiving units, and the receiving units are driven by the initial motion to drive the cleaning units to move and perform cleaning actions. The receiving units can adjust the power received from the transmission mechanism according to the characteristics and needs of the cleaning units. When the cleaning part contains multiple cleaning units, the receiving units are also responsible for coordinating the motions between these units to ensure that they can work synchronously and complete the cleaning task together to realize a composite motion mode. The receiving units can be customized for different users or different cleaning needs to provide a more personalized and targeted cleaning experience.

[0074] In one embodiment of the present disclosure, the transmission structure transmits the initial motion generated by the driving unit to one of the plurality of cleaning units, which performs a specific cleaning action in a specific motion state, thereby improving the cleaning effect and ensuring the safety and comfort of use. Referring to FIG. 2, in one embodiment of the present disclosure, the transmission mechanism includes at least a first transmission unit 41 and a second transmission unit 42, and the cleaning part 1 includes at least a first cleaning unit 11 and a second cleaning unit 12; the first transmission unit 41 converts the initial motion into a first motion to drive the first cleaning unit 11 to perform a first cleaning action; converts the initial motion into a second motion or transmits the initial motion to the second cleaning unit 12 to drive the second cleaning unit 12 to perform a second cleaning action; the motion modalities of the first cleaning unit 11 and the second cleaning unit 12 are different. As one way, the motion modality of the first motion is different from the initial motion, and / or the motion modality of the second motion is different from the initial motion. As another way, the motion modality of the first cleaning unit 11 is different from the initial motion, and / or the motion modality of the second cleaning unit 12 is different from the initial motion.

[0075] Specifically, the first transmission unit 41 receives the initial motion from the driving unit, which can be but is not limited to a structure such as a connecting rod, a gear, a lever, a screw, a chain, a spring, etc., and the first transmission unit 41 converts the initial motion into a first motion suitable for the first cleaning unit 11 to adapt to specific cleaning needs. Similarly, the second transmission unit 42 also receives the same initial motion, converts the initial motion into a second motion or directly transmits the initial motion to the second transmission unit 42 to drive the second cleaning unit 12.

[0076] The transmission mechanism converts or transmits the initial motion generated by the driving unit to different cleaning units to make them move in different motion modalities, i.e., even if the driving unit only provides a single initial motion, the transmission mechanism can make the first cleaning unit 11 and the second cleaning unit 12 make the first cleaning action and the second cleaning action most suitable for their cleaning targets through the differential design of the first transmission unit 41 and the second transmission unit 42. For example, the first cleaning unit 11 can be designed to perform a cleaning action at a higher frequency and a smaller amplitude to deal with sensitive tooth areas, while the second cleaning unit 12 can perform a cleaning action at a lower frequency and a larger amplitude to clean harder tartar, ensuring that the device can efficiently and specifically clean different areas in the oral cavity.

[0077] In one embodiment of the present disclosure, the first transmission unit 41 and the second transmission unit 42 are integrally formed or joined and assembled to form the transmission mechanism.

[0078] Specifically, when the first transmission unit 41 and the second transmission unit 42 are integrally formed, better structural stability and precision can be provided, reducing assembly errors and relative movements between parts, thereby reducing noise and energy loss. When the first transmission unit 41 and the second transmission unit 42 are assembled to form a transmission mechanism, the first transmission unit 41 and the second transmission unit 42 are assembled together through an interface or a connecting piece to form a complete transmission mechanism. In this way, the flexibility of the transmission mechanism can be improved, and each transmission unit can be optimized independently to meet specific functional requirements or spatial limitations. In addition, the assembly also facilitates maintenance and replacement of parts, and damaged units can be replaced individually without replacing the entire transmission mechanism.

[0079] In one embodiment of the present disclosure, the first transmission unit 41 and the second transmission unit 42 are respectively in transmission connection with the driving unit, and the first transmission unit 41 and the second transmission unit 42 are independently transmitted to each other.

[0080] Specifically, the first transmission unit 41 and the second transmission unit 42 are directly connected to the driving unit and can independently receive power and control signals without being affected by the other transmission unit, thereby performing independent motion adjustment. Since each transmission unit can be controlled independently, the device can provide different cleaning modes for different cleaning units. For example, one cleaning unit can vibrate at a high frequency to remove stains on the surface of the teeth, while the other unit can clean the interdental space at a lower frequency and with a larger amplitude. The independent transmission design enables the device to perform efficient cleaning at multiple cleaning points simultaneously, each point can achieve independent cleaning action, thereby improving the overall cleaning efficiency.

[0081] In one embodiment of the present disclosure, the initial motion is a reciprocating rotation, a reciprocating vibration, or a rotation around the extension axis of the driving shaft as the rotation center.

[0082] In one embodiment of the present disclosure, the initial motion is a multi-modal motion, including but not limited to: x-y axis compound motion, circumferential-axial compound motion, and two circumferential compound motion, wherein the x-y axis compound motion is an independent or coordinated compound motion in the x-axis and y-axis directions, the circumferential-axial compound motion is a compound motion of independent or coordinated motion of rotational motion and displacement motion in the direction of the preset axis extension, and the two circumferential compound motion is a motion along two circumferential paths.

[0083] Specifically, the initial motion output by the driving unit is a multi-modal motion, and the multi-modal motion refers to the ability of the device to perform two or more different types of motion patterns.

[0084] In the X-Y axis compound motion mode, the cleaning part 1 moves not only in one axis, but also simultaneously in two perpendicular axes (for example, the horizontal X axis and the vertical Y axis). This compound motion can simulate the natural rotation and up-and-down movement of the wrist when brushing manually, helping to clean the interdental space and the dental crevice, while covering multiple surfaces of the teeth. The circumferential-axial compound motion mode combines rotational (circumferential) and linear (axial) motion. The cleaning part 1 moves back and forth along the length direction of the teeth (axial direction) while rotating or reciprocating to clean the teeth, simulating the horizontal brush while cleaning the teeth in the up-and-down direction. The two circumferential compound motion modes refer to the cleaning part 1 rotating simultaneously in two different circumferential paths. The multi-modal motion form can adapt to the changes of different parts of the oral cavity and different cleaning needs, achieving more efficient and thorough cleaning.

[0085] In one embodiment of the present disclosure, the first motion and the second motion at least include one of the following differences: different motion paths, different motion frequencies, different reciprocating motion angles, and different motion strokes. In one embodiment of the present disclosure, the motion modalities of the first cleaning unit 11 and the second cleaning unit 12 at least include one of the following differences: different motion paths, different motion frequencies, different reciprocating motion angles, and different motion strokes. In one embodiment of the present disclosure, the motion modalities of the first cleaning action and the second cleaning action at least include one of the following differences: different motion paths, different motion frequencies, different reciprocating motion angles, and different motion strokes.

[0086] Specifically, the motion modalities of the first and second motions, the first and second cleaning units 11 and 12, and / or the first and second cleaning actions are different, so that different cleaning units can move along different paths, move at different frequencies, reciprocate at different angles, and / or perform different strokes to adapt to different positions and shapes of teeth. For example, referring to FIG. 2, the second cleaning unit 12 rotates along the outer surface of the teeth, while the first cleaning unit 11 moves linearly between the teeth to clean the interdental space. The motion frequency of the cleaning units can be adjusted according to the characteristics of the area to be cleaned, for example, the first cleaning unit 11 can vibrate at a higher frequency to effectively remove stains on the tooth surface, while the second cleaning unit 12 can work at a lower frequency to avoid irritating sensitive gums. The reciprocation angle refers to the maximum angle of oscillation or rotation of the cleaning unit when it reciprocates. The first and second cleaning units 11 and 12 have different reciprocation angles to better adapt to the cleaning needs of different parts. For example, cleaning the tooth surface may require a smaller angle, while cleaning the interdental space may require a larger angle. The motion stroke refers to the area covered by the cleaning unit in a single motion, and different cleaning units have different motion strokes to ensure that all areas that need to be cleaned are fully covered. For example, the first cleaning unit 11 can have a longer stroke to clean the longer tooth surface, while the second cleaning unit 12 can have a shorter stroke to focus on a specific small area.

[0087] By distinguishing the motion modalities of the first and second motions, the first and second cleaning units 11 and 12, and / or the first and second cleaning actions, the diversified cleaning needs in the oral cavity are achieved, providing a more efficient, gentle and comprehensive oral cleaning experience to meet the individual needs of different users.

[0088] In an embodiment of the present disclosure, the motion path includes but is not limited to a pivoting path, a reciprocating rotation path, a tapping motion path, a reciprocating vibration path, a reciprocating sweeping path, a transverse linear motion, a longitudinal linear motion, and / or a pendulum motion, wherein the pivoting path is a path of rotation about a fulcrum or pivot, the tapping motion path is the motion trajectory of the tapping point from the tapping point to the contact point during movement, the transverse linear motion is a transverse motion based on the extension axis of the personal care device, the drive unit or the drive shaft, and the longitudinal linear motion is a longitudinal motion based on the extension axis of the personal care device, the drive unit or the drive shaft.

[0089] Specifically, the pivoting path is a path of rotation around a fulcrum or pivot, which can mimic the wrist rotation during manual tooth brushing, helping to clean various surfaces of the teeth. The reciprocating rotation path refers to the cleaning unit rotating back and forth around a center point, which can reach deep into the interdental space and effectively remove embedded food debris and plaque. The tapping motion path refers to the cleaning unit starting from a tapping point and quickly moving to a contact point to produce a slight tapping sensation, which can loosen stubborn tartar and calculus and is suitable for cleaning the posterior teeth and masticatory surface. The reciprocating vibration path is a high-frequency small-angle vibration path, which refers to the cleaning unit rapidly vibrating back and forth in a predetermined direction, which can promote the generation of cleaning agent foam, increase the contact area between the cleaning agent and the tooth surface, and improve the cleaning efficiency. The reciprocating sweeping path is a low-frequency large-angle sweeping path, which refers to the cleaning unit sweeping back and forth within a range, similar to the horizontal sweeping motion during manual tooth brushing, which can clean the outer and inner surfaces of the teeth. The horizontal linear motion refers to the cleaning unit moving horizontally based on the extension axis of the toothbrush, which is suitable for cleaning the biting surface and top of the teeth and helps to remove dirt from the flat area. The vertical linear motion refers to the cleaning unit moving vertically along the extension axis of the toothbrush, which can reach deep into the interdental space and clean the remaining substances in the interdental space. The pendulum motion refers to the cleaning unit swinging back and forth within a certain angle like a pendulum, which can simulate the professional cleaning method of a dentist and provide comprehensive and gentle cleaning of the teeth. Different motion paths can be used to clean different parts of the teeth and oral cavity and meet different cleaning needs, providing more efficient cleaning.

[0090] The personal care device of the present disclosure is applied to an electric toothbrush in the oral care field, which can achieve deep and efficient cleaning of various surfaces / grooves of the oral cavity by making at least two cleaning units move in two motion modes, thereby meeting the diversified cleaning needs of the oral cavity and achieving more efficient and comprehensive cleaning. For ease of description, the structure and working principle of the personal care device of the present disclosure are described in detail with an electric toothbrush as an example.

[0091] Fig. 2, Fig. 3 show one embodiment of the electric toothbrush of the present disclosure, in which the electric toothbrush of the present disclosure comprises a cleaning part 1, a holding part 2 and a transmission mechanism. The cleaning part 1 comprises a brush head body 3 and a first cleaning unit 11 and a second cleaning unit 12 arranged on the brush head body 3, wherein the second cleaning unit 12 is rotationally connected to the brush head body 3 through a rotating shaft 6. The transmission mechanism comprises a first transmission unit 41 and a second transmission unit 42. The first transmission unit 41 extends from the cavity of the cleaning part 1 to the brush head body 3 and drives the first cleaning unit 11 on the brush head body 3 to vibrate under the driving of a power source, wherein the brush head body 3 is driven by the first transmission unit 41 to vibrate as a receiving unit. A limiting part 5 is arranged in the cleaning part 1 to limit the second transmission unit 42. The second transmission unit 42 extends from one end in the cleaning part 1 to cooperate with the first transmission unit 41 and extends from the other end in the brush head body 3 to eccentrically cooperate with the second cleaning unit 12. The first transmission unit 41 vibrates under the action of the power source, thereby driving the first cleaning unit 11 to reciprocate. When the first transmission unit 41 drives one end of the second transmission unit 42 to vibrate, the other end of the second transmission unit 42 drives the second cleaning unit 12 to reciprocate around the rotating shaft 6.

[0092] Fig. 4, Fig. 5 show one embodiment of the electric toothbrush of the present disclosure, in which the electric toothbrush of the present disclosure comprises a cleaning part 1, a holding part 2 and a transmission mechanism. The cleaning part 1 comprises a brush head body 3 and a first cleaning unit 11 and a second cleaning unit 12 arranged on the brush head body 3. The brush head body 3 has a first end and a second end. The first cleaning unit 11 and the second cleaning unit 12 are arranged on the first end of the brush head body 3. The second cleaning unit 12 is rotationally connected to the brush head body 3 through a rotating shaft 6. The transmission mechanism comprises a first transmission unit 41 and a second transmission unit 42. The first transmission unit 41 is fixed on the brush head body 3 and drives the brush head body 3 to vibrate under the control of an external vibration source. The second transmission unit 42 is connected to the first transmission unit 41. One end of the second transmission unit 42 is configured to extend to the first end of the brush head body 3 to eccentrically connect to the second cleaning unit 12 through an eccentric cylinder 7. The other end of the second transmission unit 42 extends to the second end of the brush head body 3 to cooperate with a limiting part arranged on the holding part 2. The first transmission unit 41 drives the brush head body 3 to vibrate under the control of the external vibration source, thereby driving the first cleaning unit 11 to reciprocate, driving the second transmission unit 42 to vibrate, and further driving the second cleaning unit 12 to reciprocate within a predetermined angle through the eccentric cylinder 7.

[0093] Fig. 6 and Fig. 7 show one of the embodiments of the electric toothbrush of the present disclosure, in which the electric toothbrush of the present disclosure comprises a cleaning part 1, a holding part 2 and a transmission mechanism. The cleaning part 1 comprises a brush head body 3 and a first cleaning unit 11 and a second cleaning unit 12 arranged on the brush head body 3. The opposite ends of the first cleaning unit 11 and the second cleaning unit 12 are respectively marked as a first end and a second end. The first cleaning unit 11 is rotatably connected to the brush head body 3 through a rotating shaft 6. The second cleaning unit 12 is linearly slidably fitted on the brush head body 3. The transmission mechanism comprises a first transmission unit 41 rotatably connected to the brush head body 3. During the reciprocating rotation relative to the brush head body 3, the first transmission unit 41 drives the first cleaning unit 11 to reciprocate, and at the same time, the second cleaning unit 12 is driven to reciprocate linearly along the axis of the brush head body 3 through the stop blocks on the two sides of the rod of the first transmission unit 41.

[0094] Fig. 8 and Fig. 9 show one of the embodiments of the electric toothbrush of the present disclosure, in which the electric toothbrush of the present disclosure comprises a cleaning part 1, a holding part 2 and a transmission mechanism. The cleaning part 1 comprises a brush head body 3 and a first cleaning unit 11 and a second cleaning unit 12 arranged on the brush head body 3. The first cleaning unit 11 and the second cleaning unit 12 are hingedly connected to the brush head body 3. The opposite ends of the first cleaning unit 11 and the second cleaning unit 12 are respectively marked as a first end and a second end. The first ends of the first cleaning unit 11 and the second cleaning unit 12 are pre-pressed on the brush head body 3 through a spring 8. The transmission mechanism comprises a first transmission unit 41 extending in the brush head body 3 to cooperate with the second ends of the first cleaning unit 11 and the second cleaning unit 12. During the reciprocating rotation in the brush head body 3, the first transmission unit 41 alternately applies a deflection torque to the second ends of the first cleaning unit 11 and the second cleaning unit 12, converts the reciprocating rotation into a deflection push, and makes the first cleaning unit 11 and the second cleaning unit 12 reciprocate in the brush head body 3.

[0095] As shown in Fig. 1, in one embodiment of the present disclosure, the personal care device further comprises a control unit configured to determine a drive parameter in response to a trigger signal, and a drive unit configured to output an initial motion based on the drive parameter determined by the control unit.

[0096] Specifically, the trigger signal originates from the user's operation, which can be the user starting, adjusting the mode, etc. through the handle button / app control, or based on sensor sensing starting, adjusting the mode, etc. The trigger signal is the initial indication of the device starting or changing the working mode. After the control unit receives the trigger signal, it analyzes the trigger signal and determines the driving parameters according to the preset program or algorithm, which are used to drive the unit to output the initial motion. The driving unit outputs the initial motion based on the driving parameters received from the control unit. The user can select or adjust the cleaning mode to generate a trigger signal, and the control unit determines the driving parameters according to the trigger signal, thereby ensuring the cleaning effect while making the personal care device adapt to different users' oral conditions and personal preferences, providing a more personalized and efficient cleaning experience.

[0097] In one embodiment of the present disclosure, the driving unit includes a driving shaft, and the driving parameters include, but are not limited to, the driving shaft rotation angle, the driving shaft rotation direction, the driving shaft reciprocating rotation frequency, and / or the driving shaft target position.

[0098] Specifically, the driving unit converts electrical energy into mechanical motion to drive the cleaning unit 1 to complete the cleaning action. The driving parameters include, but are not limited to, the rotation angle, the rotation direction, the reciprocating rotation frequency, and the target position of the driving shaft.

[0099] The driving shaft rotation angle is the angle of each rotation of the driving shaft, and the size of the driving shaft rotation angle can affect the coverage range and cleaning mode of the cleaning unit. For example, small-angle fast continuous rotation is suitable for fine cleaning, while large-angle rotation can be used to remove stubborn stains. The driving shaft can rotate forward or reverse, or alternate between forward and reverse directions. Different combinations of rotation directions can produce different cleaning effects, for example, forward rotation can clean deep into the gaps between teeth, and reverse rotation can help loosen and remove plaque. The driving shaft reciprocating rotation frequency refers to the number of forward and reverse rotations of the driving shaft per unit time, which can be selected based on the consideration of the mildness of tooth and gum cleaning while ensuring the cleaning effect. The driving shaft target position refers to the position of the driving shaft in rotation and / or extension, etc. to ensure that the cleaning unit can accurately reach or fully cover each part that needs to be cleaned.

[0100] The control unit can achieve precise control of the driving shaft motion by adjusting these driving parameters, so that the cleaning unit can perform efficient cleaning action. For example, in sensitive tooth areas, the control unit sets a lower rotation frequency and a smaller rotation angle, while in places that need strong cleaning, a higher frequency and a larger rotation angle are used. Combined with the user's needs and the intelligent algorithm of the device, the personal care device can provide an efficient and comfortable cleaning experience.

[0101] In one embodiment of the present disclosure, the initial motion is a periodic motion, which at least includes one or more motion combinations with different parameters: rotation angle of the drive shaft, rotation direction of the drive shaft, and reciprocating rotation frequency of the drive shaft.

[0102] Specifically, in the periodic motion, the rotation angle of the drive shaft can be periodically changed. For example, the device can first rotate at a small angle quickly in one cycle, and then increase the rotation angle in the next cycle to cover the cleaning area more comprehensively, which helps to flexibly switch between meticulous cleaning and deep cleaning. Periodically changing the rotation direction of the drive shaft, such as switching between forward and reverse, can enhance the cleaning effect. Periodically adjusting the reciprocating rotation frequency of the drive shaft can provide different intensities of cleaning at different times. For example, a higher frequency is used at the beginning of cleaning to quickly remove surface dirt, and then the frequency is reduced to handle sensitive areas more gently.

[0103] Through the periodic motion of different motion combinations, not only the comprehensiveness and efficiency of cleaning are improved, but also the tooth wear and gum irritation caused by long-time high-intensity cleaning are reduced, achieving the dual goals of cleaning and protection.

[0104] Currently, the mainstream electric toothbrush mainly uses open-loop direct-drive control form motors (eccentric wheel motor, sonic motor, linear motor, etc.) to drive the cleaning brush head to realize high-frequency reciprocating swing or reciprocating rotation of the cleaning assembly for oral cleaning.

[0105] The electric toothbrush with a composite motion mode usually has one or more cleaning units on a single brush head, and the brush head body 3 and the combined cleaning units perform left and right reciprocating swing, knocking, rotation, left and right or up and down movement / swing, etc. motion to realize the combination of cleaning motion forms, usually using eccentric wheel motors, sonic motors or linear motors, etc. Open-loop drive motors are used in independent or two-by-two combination mode, and the power is transmitted to each cleaning unit on the brush head through connecting rods, crankshafts, etc. structure to realize combined motion.

[0106] However, due to the limitations of the control principle, the motion amplitude of the open-loop drive mode motor cannot be accurately controlled, the motion range cannot be flexibly adjusted, and the anti-load capacity is poor (the motion attenuation of the open-loop control under high load is large). The power mode transmitted by the single motor is single, the composite structure brush head driven by the motor has multiple motion forms, but due to the weak power anti-load capacity and low power transmission structure efficiency, the composite motion power is insufficient, and the cleaning effect is poor; and the control mode is fixed and cannot be dynamically adjusted; the combination of multiple motors for driving brings the problem that multiple motion modes cannot be accurately synchronized, and the regional cleaning efficiency is reduced; the current scheme does not fundamentally realize the optimal multi-modal combined cleaning mode.

[0107] As shown in FIG. 11, in one embodiment of the present disclosure, the driving unit includes a servo motor 9 and a driving shaft, the servo motor is placed at the front end of the holding part 2, driving the driving shaft to output power, the main control board 10 provides control signals for the servo motor 9 with MCU, the battery 13 is used to provide power, and the button 14 is provided with multiple gears, which are used to reflect the user's demand to transmit signals to the MCU. The cleaning part 1 is sleeved on the driving shaft and receives the power output by the servo motor 9 through the built-in transmission mechanism cooperating with the driving shaft. In this embodiment, based on the closed-loop motion control characteristics of the servo motor 9 and the design of the multi-modal cleaning element, a multi-modal cleaning assembly motion scheme is provided under the multi-drive power mode of the servo motor 9, so as to realize efficient and full oral cleaning.

[0108] In one embodiment of the present disclosure, since the servo motor 9 can control the swing angle or rotation of the driving shaft, it provides rich choices for the design of the cleaning part 1. When the servo motor 9 swings at a high frequency, the cleaning part 1 can swing at a high frequency in combination with multiple movable parts as described above, or a single movable part can swing at a high frequency. As shown in FIG. 10, when the servo motor 9 rotates at a high frequency, a single movable part of the cleaning part 1 can swing at a high frequency, rotate at a high frequency, or perform various other motions.

[0109] In one embodiment of the present disclosure, the personal care device further includes a sensing unit electrically connected to the control unit, and the control unit is configured to adjust the driving parameters through the electrical signals of the sensing unit, so as to keep the driving unit in the initial motion state.

[0110] Specifically, the sensing unit is responsible for monitoring the real-time state of the driving unit, including but not limited to position, speed, acceleration, etc. For the current position of the driving shaft, the sensing unit is a rotary encoder, a Hall sensor, etc., which can accurately measure the rotation angle or position of the shaft and convert these physical quantities into electrical signals. The control unit receives the electrical signals from the sensing unit, compares them with the preset target value, and calculates the error. Based on this error signal, the control unit uses a control algorithm (such as PID control, fuzzy control, etc.) to adjust the driving parameters such as voltage, current or frequency of the motor to correct the error, so that the state of the driving unit tends to or remains at the set point. The feedback loop of the closed-loop control allows the system to self-adjust and resist disturbances. When the system detects a deviation from the set point, the control unit immediately responds to adjust the driving parameters to correct the deviation, thereby maintaining the stability and accuracy of the system.

[0111] When the system starts running, the control unit sets the initial motion state of the drive unit, such as speed, position or torque. The sensing unit continuously monitors the actual state, such as the current position of the drive shaft. The control unit compares the actual state with the set point, and if there is a deviation, it adjusts the drive parameters until the actual state matches the set point. The system continuously repeats the process of monitoring, comparing and adjusting throughout the entire running process to ensure that the drive unit always maintains the required motion state. Closed-loop control ensures high precision, high stability and high efficiency of the system.

[0112] In addition, in the present embodiment, the personal care device is also provided with a Hall sensor, which can measure the magnetic field strength and be used to detect the motor position or speed. The Hall sensor can be combined with a closed-loop control system to provide more accurate drive parameter regulation. For example, by monitoring the actual position and speed of the motor, the system can adjust the frequency, swing angle and rotation speed in real time to ensure that each cleaning action achieves the best effect.

[0113] In one embodiment of the present disclosure, the personal care device can also collect the user's brushing habits, preferences and health data, analyze these data through machine learning algorithms, and provide personalized cleaning solutions for the user. For example, for users who often eat pigmented foods, the device may suggest increasing the swing angle and rotation speed to enhance the whitening effect. By regulating the drive parameters, combined with closed-loop control and sensor technology, an efficient, safe and personalized cleaning experience can be provided. This not only improves the cleaning effect, but also ensures the comfort and health of the user.

[0114] The personal care device provided by the present disclosure includes a cleaning part, a holding part and a transmission mechanism. The initial motion output by the drive unit is converted to at least one cleaning unit through the transmission structure, which can realize the motion of at least two cleaning units in two motion modes, realize deep and efficient cleaning of various cleaning surfaces / grooves and other areas in the oral cavity, and meet the diversified cleaning needs of the oral cavity.

[0115] The cleaning part provided by the present disclosure is a cleaning part as described above, which is connected with the drive unit in the holding part 2 to clean the oral cavity. The cleaning part includes at least two cleaning units and a transmission structure. The transmission structure is in transmission connection with the cleaning units, and converts the initial motion output by the drive unit to at least one cleaning unit, so that at least two cleaning units move in two motion modes respectively.

[0116] In one embodiment of the present disclosure, the transmission mechanism comprises at least a first transmission unit 41 and a second transmission unit 42, and the cleaning part 1 comprises at least a first cleaning unit 11 and a second cleaning unit 12; the first transmission unit 41 converts the initial motion into the first motion and drives the first cleaning unit 11 to perform the first cleaning action; the second transmission unit 42 converts the initial motion into the second motion or transmits the initial motion to the second cleaning unit 12 and drives the second cleaning unit 12 to perform the second cleaning action; the motion modalities of the first cleaning unit 11 and the second cleaning unit 12 are different.

[0117] In one embodiment of the present disclosure, the first motion and the second motion are different at least in one of the following aspects: motion path, motion frequency, reciprocating motion angle, and motion stroke.

[0118] In one embodiment of the present disclosure, the first transmission unit 41 and the second transmission unit 42 are integrally formed or are jointed and assembled to form the transmission mechanism.

[0119] In one embodiment of the present disclosure, the first transmission unit 41 and the second transmission unit 42 are respectively in transmission connection with the driving unit and are independently driven by the driving unit.

[0120] In one embodiment of the present disclosure, the motion path includes but is not limited to: a pivoting path, a reciprocating rotation path, a knocking motion path, a reciprocating vibration path, a reciprocating sweeping path, a transverse linear motion, a longitudinal linear motion, and / or a pendulum motion, wherein the pivoting path is a path of rotation around a fulcrum or a pivot, the knocking motion path is a motion trajectory of a knocking point from a knocking point to a contact point, the transverse linear motion is a transverse motion based on an extension axis of the personal care device or the driving unit, and the longitudinal linear motion is a longitudinal motion based on the extension axis of the personal care device or the driving unit.

[0121] In one embodiment of the present disclosure, the cleaning part 1 further comprises one or more receiving units cooperating with the transmission mechanism, and the one or more receiving units are driven by the transmission mechanism to drive the one or more cleaning units to perform the cleaning action.

[0122] The cleaning part provided by the present disclosure can refer to the above-mentioned embodiments of the personal care device, which will not be described here again.

Claims

1. A personal care device characterized in that, The application relates to a cleaning device, comprising: a cleaning part (1) comprising at least two cleaning units; a holding part (2) comprising a driving unit accommodated therein and a control unit, the driving unit being configured to output initial motion in response to one or more control signals sent by the control unit; a transmission mechanism attached to the driving unit and in transmission connection with the cleaning units, and configured to convert the initial motion output by the driving unit into at least one cleaning unit to drive the at least two cleaning units to move in two different motion modes respectively.

2. The personal care device of claim 1, wherein, Further comprising: the control unit being configured to determine a driving parameter in response to a trigger signal; the driving unit being configured to output the initial motion based on the driving parameter determined by the control unit.

3. The personal care device of claim 1, wherein, Further comprising a sensing unit in electrical connection with the control unit, the control unit being configured to adjust the driving parameter through the electrical signal of the sensing unit to make the driving unit maintain the initial motion state.

4. The personal care device of claim 3, wherein, The driving unit comprises a driving shaft, and the driving parameter comprises but is not limited to the rotation angle of the driving shaft, the rotation direction of the driving shaft, the reciprocating rotation frequency of the driving shaft and / or the target position of the driving shaft.

5. The personal care device of claim 1, wherein, The initial motion is a multi-mode motion, which comprises but is not limited to x-y axis composite motion, circumferential-axial composite motion and two circumferential composite motion, wherein the x-y axis composite motion is independent or coordinated composite motion in the x-axis and y-axis directions, the circumferential-axial composite motion is independent or coordinated composite motion of the rotation motion and the displacement motion in the extension direction of the preset axis, and the two circumferential composite motion is motion along two circumferential paths.

6. The personal care device of claim 1, wherein, The transmission mechanism comprises at least a first transmission unit (41) and a second transmission unit (42), and the cleaning part (1) comprises at least a first cleaning unit (11) and a second cleaning unit (12); the first transmission unit (41) converts the initial motion into a first motion to drive the first cleaning unit (11) to perform a first cleaning action; the second transmission unit (42) converts the initial motion into a second motion or transmits the initial motion to the second cleaning unit (12) to drive the second cleaning unit (12) to perform a second cleaning action; the motion modes of the first cleaning unit (11) and the second cleaning unit (12) are different.

7. The personal care device of claim 6, wherein, The first motion and the second motion at least comprise one of the following differences: different motion paths, different motion frequencies, different reciprocating motion angles and different motion strokes; and / or, the motion modes of the first cleaning unit (11) and the second cleaning unit (12) at least comprise one of the following differences: different motion paths, different motion frequencies, different reciprocating motion angles and different motion strokes; and / or, the motion modes of the first cleaning action and the second cleaning action at least comprise one of the following differences: different motion paths, different motion frequencies, different reciprocating motion angles and different motion strokes.

8. The personal care device of claim 6, wherein, The first transmission unit (41) and the second transmission unit (42) are integrally formed or are jointed and assembled to form the transmission mechanism.

9. The personal care device of claim 6, wherein, The first transmission unit (41) and the second transmission unit (42) are respectively in transmission connection with the driving unit, and the first transmission unit (41) and the second transmission unit (42) are independently driven.

10. The personal care device of claim 7, wherein, The movement path includes but is not limited to: a pivot path, a reciprocating rotation path, a tapping movement path, a reciprocating vibration path, a reciprocating sweeping path, a transverse linear motion, a longitudinal linear motion and / or a pendulum motion, wherein the pivot path is a path of rotation around a fulcrum or pivot, the tapping movement path is the movement trajectory of the tapping point from the tapping point to the contact point, the transverse linear motion is a transverse motion based on the extension axis of the personal care device or the driving unit, and the longitudinal linear motion is a longitudinal motion based on the extension axis of the personal care device or the driving unit.

11. The personal care device of claim 1, wherein, The cleaning part (1) further comprises one or more receiving units cooperating with the transmission mechanism, and the one or more receiving units are driven by the transmission mechanism to drive the one or more cleaning units to perform cleaning actions.

12. The personal care device of claim 1, wherein, The initial movement is a periodic movement, and the periodic movement includes at least one or more parameter different movement combinations: driving shaft rotation angle, driving shaft rotation direction, and driving shaft reciprocating rotation frequency.

13. A cleaning section (1) connected to a drive unit in a holding section (2) for cleaning the oral cavity, characterized in that, The cleaning part (1) comprises: At least two cleaning units; The transmission mechanism is configured to be in transmission connection with the cleaning units, and is configured to convert the initial movement output by the driving unit to at least one cleaning unit, so that at least two cleaning units move on two movement modes respectively.

14. Cleaning part (1) according to claim 13, characterized in that The transmission mechanism at least includes a first transmission unit (41) and a second transmission unit (42), and the cleaning part (1) at least includes a first cleaning unit (11) and a second cleaning unit (12); The first transmission unit (41) converts the initial movement into a first movement, and drives the first cleaning unit (11) to perform a first cleaning action; The second transmission unit (42) converts the initial movement into a second movement or transmits the initial movement to the second cleaning unit (12), and drives the second cleaning unit (12) to perform a second cleaning action; The movement modes of the first cleaning unit (11) and the second cleaning unit (12) are different. The first movement and the second movement at least include one of the following differences: different movement paths, different movement frequencies, different reciprocating movement angles, and different movement strokes.

15. Cleaning part (1) according to claim 14, characterized in that The first transmission unit (41) and the second transmission unit (42) are integrally formed or are jointed and assembled to form a transmission mechanism.

16. A cleaning part (1) according to claim 14, characterized in that The first transmission unit (41) and the second transmission unit (42) are respectively in transmission connection with the driving unit, and the first transmission unit (41) and the second transmission unit (42) are independently driven.

17. A cleaning part (1) according to claim 14, characterized in that ​ 18. A cleaning part (1) according to claim 15, characterized in that The movement paths include, but are not limited to, a pivoting path, a reciprocating rotation path, a tapping movement path, a reciprocating vibration path, a reciprocating sweeping path, a transverse linear movement, a longitudinal linear movement and / or a pendulum movement, wherein the pivoting path is a path of rotation about a fulcrum or pivot, the tapping movement path is a movement trajectory of a tapping point during movement from a tapping point to a contact point, the transverse linear movement is a transverse movement based on an extension axis of the personal care device or the drive unit, and the longitudinal linear movement is a longitudinal movement based on the extension axis of the personal care device or the drive unit.

19. A cleaning part (1) according to claim 13, characterized in that The cleaning part (1) further comprises one or more receiving units cooperating with the transmission mechanism, which are driven by the transmission mechanism to drive the one or more cleaning units to perform cleaning actions.

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