CN118282118A

CN118282118A - Resonant assembly

Info

Publication number: CN118282118A
Application number: CN202310254024.9A
Authority: CN
Inventors: 曾梦伟; 魏宏敏; 李舟健
Original assignee: Shenzhen Sushi Technology Co Ltd
Current assignee: Shenzhen Sushi Technology Co Ltd
Priority date: 2022-12-30
Filing date: 2023-03-06
Publication date: 2024-07-02
Also published as: WO2024140837A1

Abstract

The invention discloses a resonance assembly, which comprises an axis, a resonance component and an output assembly, wherein the resonance component comprises a first resonance unit, a second resonance unit and a first shaft, the first shaft extends along the axis direction and is collinear with the central line of the first shaft, the first resonance unit and the second resonance unit are arranged on the first shaft in a penetrating way, the output assembly comprises a support frame, a second shaft, a connecting piece and a bearing, the support frame is arranged on one side of the resonance component in the axis direction, the support frame and the resonance component are arranged at intervals along the axis direction, the support frame is provided with a through hole penetrating the support frame along the axis direction, the second shaft extends along the axis direction, one end of the second shaft is operatively combined with the connecting piece, the other end of the second shaft penetrates through the through hole, the second shaft can rotate around the axis direction, and the outer peripheral surface of the second shaft and the inner peripheral surface of the through hole are arranged at intervals along the radial direction of the axis. The resonance component has the advantages of low cost, compact structure and the like.

Description

Resonant assembly

Technical Field

The present invention relates to personal care appliances, and in particular, to a resonant assembly.

Background

The electric toothbrush drives the spring through the motor to enable the brush head of the electric toothbrush to generate high-frequency vibration, and the toothpaste is instantaneously decomposed into fine foam to deeply clean the gaps between the teeth, so that the purpose of whitening the teeth is achieved.

In the related art, the internal structure of the electric toothbrush is unreasonable to be arranged, and the size of the internal structure is large.

Disclosure of Invention

The present invention aims to solve at least one of the technical problems in the related art to some extent. Therefore, the embodiment of the invention provides the resonance assembly which is compact in structure and reasonable in structural arrangement.

The resonance assembly of the embodiment of the invention comprises: an axis; the resonance component comprises a first resonance unit, a second resonance unit and a first shaft, wherein the first shaft extends along the axial direction and is collinear with the central line of the first shaft, and the first resonance unit and the second resonance unit are arranged on the first shaft in a penetrating way; the output assembly comprises a support frame, a second shaft, a connecting piece and a bearing, wherein the support frame is arranged on one side of the resonance component, the support frame and the resonance component are arranged at intervals along the axis direction, the support frame is provided with a through hole penetrating through the support frame along the axis direction, the first resonance unit is positioned between the output assembly and the second resonance unit and is connected with the connecting piece, the second shaft extends along the axis direction, one end of the second shaft is operatively combined with the connecting piece, the other end of the second shaft penetrates through the through hole, the second shaft can rotate around the axis direction, the outer peripheral surface of the second shaft and the inner peripheral surface of the through hole are arranged at intervals along the radial direction of the axis, and the bearing is supported in the through hole and is arranged on the second shaft; the input assembly is arranged on one side of the resonance component, which is far away from the output assembly, and is connected with the second resonance unit; and exciting the second resonance unit to rotate at the input assembly, driving the first resonance unit to rotate in opposite directions through the first shaft so as to enable the first resonance unit and the second resonance unit to resonate, and transmitting resonance energy to the second shaft through the connecting piece.

According to the resonant assembly provided by the embodiment of the invention, the supporting frame is arranged, so that an installation foundation is provided for the resonant component, the supporting frame is not arranged between the first resonant unit and the second resonant unit, the length of the resonant assembly is reduced, and the transmission efficiency of the resonant assembly is improved.

In some embodiments, the resonant assembly further comprises a support having a mounting cavity, the resonant member and the output assembly are disposed within the mounting cavity, the first resonant unit and the second resonant unit are disposed with the support along a radial spacing of the axis, and the support is disposed within the mounting cavity and is coupled to the support.

In some embodiments, at least one of the first resonant unit and the second resonant unit comprises a first flexible spring and a mass block, the mass block of the first resonant assembly is connected with the output assembly, the mass block of the second resonant assembly is connected with the input assembly, one of the first flexible spring and the mass block is provided with a first protrusion, the other of the first flexible spring and the mass block is provided with a first groove, the first protrusion is penetrated in the first groove, and the first flexible spring is penetrated on the first shaft; the first shaft drives the first flexible spring to rotate, the first flexible spring drives the mass block to rotate, or the mass block drives the first flexible spring to rotate, and the first flexible spring drives the first shaft to rotate.

In some embodiments, at least one of the first resonant unit and the second resonant unit further comprises a second flexible spring, the second flexible spring and the second flexible spring are arranged opposite to each other along the axis at intervals, the mass block is arranged between the first flexible spring and the second flexible spring, one of the second flexible spring and the mass block is provided with a second protrusion, the other of the second flexible spring and the mass block is provided with a second groove, and the second protrusion is arranged in the second groove in a penetrating manner.

In some embodiments, each of the first and second flexible springs comprises: an annular body surrounding along a circumference of the axis to form a closed-loop chamber, the axis passing through a center point of the chamber; the mounting part is arranged in the cavity, and a first hole penetrating through the mounting part along the axis direction is formed in the mounting part; a first connecting portion having flexibility, the first connecting portion having a first end operatively engaged with an inner peripheral surface of the annular body and a second end operatively engaged with an outer peripheral surface of the mounting portion, the first connecting portion extending in a radial direction of the axis; the second connecting part is connected with the annular body and is arranged at intervals along the circumferential direction of the axis with the first connecting part; when the installation part rotates, the first connecting part can generate elastic deformation to drive the annular body to rotate around the axis, or when the second connecting part drives the annular body to rotate, the first connecting part can generate elastic deformation to drive the installation part to rotate around the axis.

In some embodiments, the second connection portion includes a first segment integrally interposed with the annular body, and a second segment protruding from an end surface of the annular body, the protruding direction extending along the axis.

In some embodiments, each of the first and second flexible springs further includes a web having flexibility, the web extending in a radial direction of the axis and disposed within the chamber, the web having a first end operatively engaged with an inner peripheral surface of the annular body and a second end operatively engaged with an outer peripheral surface of the second connecting portion, the outer peripheral surface of the second connecting portion and the outer peripheral surface of the mounting portion being disposed at radial intervals along the axis, the web and the first connecting portion being disposed at circumferential intervals along the axis.

In some embodiments, the mass block is provided with a third connecting portion and a fourth connecting portion, the third connecting portion and the fourth connecting portion are arranged at intervals along the circumferential direction of the axis, one of the second connecting portion and the third connecting portion of the first flexible spring is the first groove, the other of the second connecting portion and the third connecting portion of the first flexible spring is the first protrusion, the first protrusion is arranged in the first groove in a penetrating manner so that the first flexible spring is connected with the mass block, one of the second connecting portion and the fourth connecting portion of the second flexible spring is the second groove, the other of the second connecting portion and the fourth connecting portion of the second flexible spring is the second protrusion, and the second protrusion is arranged in the second groove in a penetrating manner so that the second flexible spring is connected with the mass block.

In some embodiments, the line connecting the third connection of the mass and the center of the mass is a first straight line, the line connecting the fourth connection of the mass and the center of the mass is a second straight line, and the first straight line and the second straight line intersect and are 90 ° as seen in the direction of the axis.

In some embodiments, the input component comprises: a stator assembly having at least one coil, the stator assembly further comprising a stator core having first and second stator cores extending in the axial direction and disposed opposite each other in a radial direction of the axis, and a third core disposed at an angle to the axis, the at least one coil being disposed on the third core around an outside of the third core; and the rotor assembly is at least partially rotatably arranged between the first stator core and the second stator core, and is connected with the second resonance unit so that the rotor assembly drives the second resonance unit to rotate.

In some embodiments, the rotor assembly includes a first magnet assembly, a second magnet assembly, and a rotor support extending at least partially between the first stator core and the second stator core, an outer circumferential surface of the rotor support being spaced apart from an inner circumferential surface of the first stator core, an inner circumferential surface of the second stator core along a radial direction of the axis, the first magnet assembly and the second magnet assembly being disposed on the rotor support in opposition to each other along the radial direction of the axis, at least a portion of the first stator core and the first magnet assembly forming an air gap between end surfaces that are proximate to each other, at least a portion of the second stator core and the second magnet assembly forming an air gap between end surfaces that are proximate to each other; the first magnet assembly and the second magnet assembly both comprise a first magnetization area and a second magnetization area with opposite magnetic poles, the first magnetization area of the first magnet assembly and the first magnetization area of the second magnet assembly are adjacently arranged at intervals when seen along the axial direction, and the second magnetization area of the first magnet assembly and the second magnetization area of the second magnet assembly are adjacently arranged at intervals.

In some embodiments, the input assembly further includes a third shaft and a mounting base, the mounting base is disposed between the stator assembly and the rotor assembly, the stator assembly, the rotor assembly and the mounting base are disposed along the axial direction at intervals, the first stator core and the second stator core are connected with the mounting base, a mounting hole extending along the axial direction is disposed on one side of the mounting base facing the rotor assembly, the third shaft extends along the axial direction, one end of the third shaft is operatively combined with the rotor support, the other end of the third shaft rotatably penetrates through the mounting hole, and an outer circumferential surface of the third shaft and an inner circumferential surface of the mounting hole are disposed along the radial direction of the axial line at intervals.

Drawings

Fig. 1 is a schematic structural view of a resonance assembly according to a first embodiment of the present invention.

Fig. 2 is an exploded view of a resonant assembly of a first embodiment of the present invention.

Fig. 3 is a schematic structural view of a resonance member according to a first embodiment of the present invention.

Fig. 4 is a schematic structural view of a resonance assembly according to a second embodiment of the present invention.

Fig. 5 is a cross-sectional view of a resonating assembly according to a second embodiment of the present invention.

Fig. 6 is an exploded view of a resonating assembly according to a second embodiment of the present invention.

Fig. 7 is a schematic structural view of a first flexible spring according to a second embodiment of the present invention.

Fig. 8 is a schematic view of the installation of a first flexible spring and plug portion of a second embodiment of the invention.

Reference numerals:

A resonating assembly 100;

An axis 1;

a resonance member 2; a first resonance unit 21; a second resonance unit 22; a first shaft 23;

An output assembly 3; a support frame 31; a through hole 311; a second shaft 32; a connecting member 33; a bearing 34;

A bracket 4; a mounting cavity 41;

A first flexible spring 5; a second connection portion 51; a first section 511; a second section 512; an annular body 52; a mounting portion 53; a first hole 531; a first connection portion 54; a connection plate 55;

a mass block 6; a second hole 61; a first groove 62; a second groove 63; a third hole 64; a plug-in portion 65;

A second flexible spring 7;

an input assembly 9; a stator assembly 91; a first stator core 911; a second stator core 912; a third iron core 913; a coil 914;

A rotor assembly 92; a first magnet assembly 921; a second magnet assembly 922; a rotor bracket 923;

A third shaft 93; and a mounting seat 94.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.

An electric toothbrush according to an embodiment of the present invention is described below with reference to the accompanying drawings.

As shown in fig. 1-8, an electric toothbrush according to an embodiment of the present invention includes a housing (not shown) and a resonant assembly 100 mounted within the housing.

As shown in fig. 1-2, the resonant assembly 100 includes an axis 1, a resonant member 2, an output assembly 3, and an input assembly 9.

The resonance member 2 includes a first resonance unit 21, a second resonance unit 22, and a first shaft 23, the first shaft 23 extending in the direction of the axis 1 (the left-right direction as viewed in fig. 1) and the axis 1 being collinear with the axis of the first shaft 23, the first resonance unit 21 and the second resonance unit 22 being provided to pass through the first shaft 23. Specifically, as shown in fig. 1-2, the axis 1 extends in the left-right direction and the axis 1 passes through the axis 1 of the first shaft 23, the first shaft 23 is a transmission shaft and extends in the left-right direction, the first resonance unit 21 and the second resonance unit 22 are both provided on the first shaft 23 in a penetrating manner and are sequentially provided in the left-right direction, and the first resonance unit 21 is provided on the left side of the second resonance unit 22.

The output assembly 3 includes a support frame 31, a second shaft 32, a connecting member 33 and a bearing 34, the support frame 31 is provided at one side of the resonance member 2, the support frame 31 and the resonance member 2 are arranged at intervals along the axis 1 direction, the support frame 31 is provided with a through hole 311 penetrating the support frame 31 along the axis 1 direction, the first resonance unit 21 is located between the output assembly 3 and the second resonance unit 22 and is connected with the connecting member 33, the second shaft 32 extends along the axis 1 direction, one end of the second shaft 32 is operatively combined with the connecting member 33, the other end of the second shaft 32 penetrates through the through hole 311, the second shaft 32 can rotate around the axis 1 direction, the outer peripheral surface of the second shaft 32 and the inner peripheral surface of the through hole are arranged at intervals along the radial direction of the axis 1, and the bearing 34 is supported in the through hole 311 and is mounted on the second shaft 32. Specifically, as shown in fig. 1-4, the supporting frame 31 is fixed in the housing and is located at the left side of the resonance component 2, a through hole 311 penetrating the supporting frame 31 along the left-right direction is provided on the supporting frame 31, the second shaft 32 is an output shaft and extends along the left-right direction, the axis 1 penetrates the axis 1 of the second shaft 32, the connecting piece 33 is an elliptical connecting block, a circular connecting block, a polygonal connecting block and the like, the connecting piece 33 is located between the supporting frame 31 and the first resonance unit 21, the supporting frame 31, the connecting piece 33 and the first resonance unit 21 are sequentially arranged at intervals along the left-right direction, the right end of the second shaft 32 penetrates the through hole 311 to be fixed with the connecting piece 33, the right end of the connecting piece 33 is connected with the first resonance unit 21, so that the connecting piece 33, the second shaft 32 and the first resonance unit 21 are installed together, the outer ring of the bearing 34 is fixed in the through hole 311, the second shaft 32 penetrates the inner ring of the bearing 34, and the second shaft 32 is supported on the supporting frame 31 through the bearing 34.

The input assembly 9 is arranged on the side of the resonator element 2 remote from the output assembly 3, and one side of the input assembly 9 is connected to the second resonator element 22, so that the input assembly 9 excites and drives the second resonator element 22 to rotate. Specifically, as shown in fig. 1-2, the input assembly 9 is disposed in the bracket 4 and located at the right end of the resonance component 2, and is connected to the second resonance unit 22 through the input assembly 9, so that the input assembly 9 drives the second resonance unit 22 to rotate, thereby providing power to the resonance component 2 through the input assembly 9.

When the input assembly 9 excites the second resonance unit 22 to rotate, the first resonance unit 21 is driven to rotate in opposite directions by the first shaft 23 (for example, the first resonance unit 21 rotates clockwise, the second resonance unit 22 rotates counterclockwise, or the first resonance unit 21 rotates counterclockwise, and the second resonance unit 22 rotates clockwise), so that the first resonance unit 21 and the second resonance unit 22 resonate and resonance energy is transmitted to the second shaft 32 through the connecting member 33. Specifically, the input assembly 9 drives the second resonance unit to rotate to drive the first shaft 23 to rotate, and the first shaft 23 drives the first resonance unit 21 to rotate, so that the first resonance unit 21 and the second resonance unit 22 resonate and transmit resonance energy to the second shaft 32 through the connecting piece 33.

According to the resonance assembly 100 provided by the embodiment of the invention, the support frame 31 is arranged, so that the resonance component 2 is arranged in the shell, a mounting foundation is provided for the resonance component 2, the support frame 31 is not arranged between the first resonance unit 21 and the second resonance unit 22, the length of the resonance assembly 100 is reduced, the transmission efficiency of the resonance assembly 100 is improved, the resonance assembly 100 is more compact in structure, the redundant space can increase the length (namely the capacity) of a battery, the endurance capacity of the electric toothbrush is improved, and the bearing 34 is arranged to be supported in the second shaft 32 and the through hole, so that the second shaft 32 is prevented from moving in the left-right direction, the torsion output moment of the second shaft 32 is ensured, and the bending resistance capacity of the second shaft 32 is improved.

In some embodiments, the resonant assembly 100 further includes a support 4, the support 4 has a mounting cavity 41, the resonant member 2 and the output assembly 3 are disposed in the mounting cavity 41, the first resonant unit 21 and the second resonant unit 22 are disposed at intervals along a radial direction (an inner-outer direction as shown in fig. 4) of the axis 1 from the support 4, and the support 31 is disposed in the mounting cavity 41 and connected to the support 4. Specifically, as shown in fig. 1-2 and 4, the support frame 4 is a rib plate support frame 4, the support frame 31 is installed in the installation cavity 41 and is connected with the support frame 4, the outer circumferential surface of the first resonance unit 21 and the outer circumferential surface of the second resonance unit 22 are arranged at intervals along the inner and outer directions of the installation cavity 41, and the first resonance unit 21 and the second resonance unit 22 are prevented from being bumped and ground with the inner circumferential surface of the installation cavity 41 when rotating, so that the resonance component 2 and the output component 3 are installed in the support frame 4 to form a whole, and subsequent assembly of the resonance component 100 is facilitated.

It will be appreciated that the support 31 may be integrally formed with the support 4, the support 31 and the support 4 may be bonded together, the support 31 and the support 4 may be mated by fasteners, etc.

In some embodiments, the input assembly 9 includes a stator assembly 91 having at least one coil 914 and a rotor assembly 92.

The stator assembly 91 further includes a stator core having a first stator core 911 and a second stator core 912 extending in the direction of the axis 1 and disposed opposite to each other at intervals in the radial direction of the axis 1, and a third core 913 disposed at an angle to the axis 1, at least one coil 914 being disposed on the third core 913 around the outside of the third core 913. Specifically, as shown in fig. 1-2, the first stator core 911 and the second stator core 912 each extend in the left-right direction, the third core 913 extends in the up-down direction, the third core 913, the first stator core 911 and the second stator core 912 are each provided in the housing and located at the left side of the driving assembly, the right end of the first stator core 911 is fixed at the upper end of the third core 913, the right end of the second stator core 912 is fixed at the lower end of the third core 913, and the coil 914 is wound on the third core 913, so that the first stator core 911 and the second stator core 912 are oppositely disposed at intervals in the up-down direction, so that the third core 913, the coil 914, the first stator core 911 and the second stator core 912 form the stator assembly 91.

The rotor assembly 92 is at least partially rotatably disposed between the first stator core 911 and the second stator core 912, and the rotor assembly 92 is coupled to the second resonant unit 22 such that the rotor assembly 92 rotates the second resonant unit 22. Specifically, as shown in fig. 1-2, the rotor assembly 92 is rotatably disposed between the first stator core 911 and the second stator core 912 in a penetrating manner, and the outer peripheral surface of the rotor assembly 92 and the first stator core 911 and the second stator core 912 are disposed at intervals in the inner-outer direction, so that the rotor assembly 92 can smoothly rotate between the first stator core 911 and the second stator core 912, the rotor assembly 92, the first stator core 911 and the second stator core 912 are prevented from being bumped and ground, the service lives of the first stator core 911, the second stator core 912 and the rotor assembly 92 are ensured, the left end surface of the rotor assembly 92 is provided with a protrusion, the second resonance unit 22 is provided with a groove, the protrusion is disposed in the groove in a penetrating manner, so that the rotor assembly 92 is connected with the second resonance unit 22, the rotor assembly 92 drives the second resonance unit 22 to rotate, and an installation basis is provided for the rotor assembly 92 through the cooperation of the protrusion and the groove, so that the rotor assembly 92 is suspended between the first stator core 911 and the second stator core 912.

In some embodiments, the rotor assembly 92 includes a first magnet assembly 921, a second magnet assembly 922, and a rotor bracket 923 at least partially extending between the first stator core 911 and the second stator core 912, an outer circumferential surface of the rotor bracket 923 being spaced apart from an inner circumferential surface of the first stator core 911 and an inner circumferential surface of the second stator core 912 in a radial direction of the axis 1, the first magnet assembly 921 and the second magnet assembly 922 being disposed on the rotor bracket 923 opposite to each other in the radial direction of the axis 1, at least a portion of the first stator core 911 and the first magnet assembly 921 forming an air gap between end surfaces close to each other, and at least a portion of the second stator core 912 and the second magnet assembly 922 forming an air gap between end surfaces close to each other. Specifically, as shown in fig. 1-2, the rotor support 923 is cylindrical and rotatably installed between the left end portion of the first stator core 911 and the left end portion of the second stator core 912, and the inner circumferential surface of the first stator core 911 and the inner circumferential surface of the second stator core 912 are both disposed at intervals with the outer circumferential surface of the rotor support 923 to form an air gap, and the rotor support 923 is connected with the second resonance unit 22, not only the rotor support 923 can drive the second resonance unit 22 to rotate, but also the second resonance unit 22 provides an installation basis for the rotor support 923, so that the rotor support 923 is suspended between the first stator core 911 and the second stator core 912.

The first magnet assembly 921 and the second magnet assembly 922 each include a first magnetization region and a second magnetization region having opposite magnetic poles, and the first magnetization region of the first magnet assembly 921 and the first magnetization region of the second magnet assembly 922 are disposed at an adjacent interval when viewed along the axis 1 direction, and the second magnetization region of the first magnet assembly 921 and the second magnetization region of the second magnet assembly 922 are disposed at an adjacent interval.

Specifically, as shown in fig. 1-2, the upper end and the lower end of the rotor bracket 923 are both provided with grooves, the first magnet assembly 921 is disposed in the groove at the upper end of the rotor bracket 923, the second magnet assembly 922 is disposed in the groove at the lower end of the rotor bracket 923, the outer circumferential surface of the first magnet assembly 921 and the inner circumferential surface of the first stator core 911 are disposed opposite to each other in the vertical direction at intervals, the outer circumferential surface of the second magnet assembly 922 and the inner circumferential surface of the second stator core 912 are disposed opposite to each other in the vertical direction at intervals, the first magnet assembly 921 and the second magnet assembly 922 each include a first magnetization region and a second magnetization region having opposite magnetic poles, for example, the first magnetization region is an N pole, the second magnetization region is an S pole, or the first magnetization region is an S pole, the second magnetization region is an N pole, in other words, the first magnet assembly 921 and the second magnet assembly 922 each include at least two permanent magnets, and the two permanent magnets are disposed in the groove and have opposite magnetic poles on the side facing away from the groove. The first magnetization region of the first magnet assembly 921 and the first magnetization region of the second magnet assembly 922 are disposed to face each other at an interval in the inner-outer direction, and the second magnetization region of the first magnet assembly 921 and the second magnetization region of the second magnet assembly 922 are disposed to face each other at an interval in the inner-outer direction. Therefore, when the coil 914 is electrified, the first stator core 911 and the second stator core 912 generate opposite magnetic poles, so as to drive the first magnetization region and the second magnetization region to drive the rotor support 923 to reciprocally rotate around the shaft with a certain swing angle, and the protrusions are fixed on the left side surface of the rotor support 923, so that the rotor support 923 can drive the second resonance unit 22 to rotate.

In some embodiments, the input assembly 9 further includes a third shaft 93 and a mounting seat 94, the mounting seat 94 is disposed between the stator assembly 91 and the rotor assembly 92, the stator assembly 91, the rotor assembly 92 and the mounting seat 94 are disposed at intervals along the direction of the axis 1, the first stator core 911 and the second stator core 912 are connected to the mounting seat 94, and a mounting hole (not illustrated) extending along the direction of the axis 1 is provided on a side of the mounting seat 94 facing the rotor assembly 92. Specifically, as shown in fig. 1-2, the mounting base 94 may be fixed on the bracket 4 by a fastener and located between the stator assembly 91 and the rotor assembly 92, the stator assembly 91, the mounting base 94 and the rotor assembly 92 are disposed at intervals along the left-right direction, the first stator core 911 is fixed at the upper end of the mounting base 94, and the second stator core 912 is fixed at the lower end of the mounting base 94, so that the first stator core 911 and the second stator core 912 are mounted more firmly by the mounting base 94, and the left side surface of the mounting base 94 is provided with a mounting hole extending along the left-right direction.

In some embodiments, the third shaft 93 extends along the axis 1 direction and one end of the third shaft 93 is operatively coupled to the rotor bracket 923, and the other end of the third shaft 93 is rotatably inserted into the mounting hole, and an outer circumferential surface of the third shaft 93 and an inner circumferential surface of the mounting hole are disposed at intervals in a radial direction of the axis 1. Specifically, as shown in fig. 1-2, the third shaft 93 is a connecting shaft and extends in the left-right direction, the left end of the third shaft 93 is fixed with the rotor bracket 923, the right end of the third shaft 93 is inserted into the mounting hole, and the inner peripheral surface of the mounting hole and the outer peripheral surface of the third shaft 93 are arranged at intervals, so that the third shaft 93 is limited to jump in the circumferential direction thereof through the mounting hole, and the rotation of the rotor bracket 923 is also limited.

It will be appreciated that the third shaft 93 and mounting hole may also be connected by a bearing 34, namely: the outer ring of the bearing 34 is fixed in the mounting hole, and the inner ring of the bearing 34 is fitted on the outer peripheral surface of the third shaft 93.

In some embodiments, the first resonant cell 21 and the second resonant cell 22 are equidistant from the center node of the first resonant cell 21 to the first axis 23 and the second resonant cell 22 to the center node. Specifically, as shown in the figure, the first and second resonance units 21 and 22 are symmetrically arranged in the left-right direction along the center node of the first axis 23, so that the torque generated by the first and second resonance units 21 and 22 can be further offset at the center node, further reducing torsional vibration that may be transmitted to the user during operation.

In some embodiments, at least one of the first resonant unit 21 and the second resonant unit 22 includes a first flexible spring 5 and a mass block 6, the mass block 6 of the first resonant assembly 21 is connected with the output assembly 3, the mass block 6 of the second resonant assembly 22 is connected with the input assembly 9, one of the first flexible spring 5 and the mass block 6 is provided with a first protrusion, the other of the first flexible spring 5 and the mass block 6 is provided with a first groove 62, the first protrusion is arranged in the first groove 62 in a penetrating manner, the first shaft 23 is arranged in the first flexible spring 5 in a penetrating manner and drives the first flexible spring 5 to rotate, the first shaft 23 drives the first flexible spring 5 to rotate, the first flexible spring 5 drives the mass block 6 to rotate, or the mass block 6 drives the first flexible spring 5 to rotate, and the first flexible spring 5 drives the first shaft 23 to rotate.

Specifically, as shown in fig. 1 to 3, at least one of the first resonance unit 21 and the second resonance unit 22 includes a first flexible spring 5 and a mass 6, the mass 6 is used to adjust the resonance frequency of the driving assembly, and the first flexible spring 5 is located at the left side of the mass 6, and the first recess 62 and the first protrusion may be provided according to practical situations, for example: the first groove 62 is formed in the right end face of the first flexible spring 5, the first bulge is formed in the left end face of the mass block 6, or the first bulge is formed in the right end face of the first flexible spring 5, the first groove 62 is formed in the left end face of the mass block 6, accordingly, the mass block 6 and the first flexible spring 5 are assembled together through the cooperation of the first bulge and the first groove 62, the first flexible spring 5 penetrates through the first shaft 23 and can rotate synchronously with the first shaft 23, the mass block 6 and the first flexible spring 5 are assembled together, the mass block 6 is driven to rotate through the first flexible spring 5, a plurality of flexible springs are assembled together through fasteners relative to the related art, the assembly process of a resonance unit is reduced, the manufacturing cost of the resonance unit is reduced, the mass block 6 of the first resonance unit 21 is connected with a motor, the motor drives the mass block 6 of the first resonance unit 21 to rotate, the mass block 6 of the first resonance unit 21 drives the first flexible spring 5 of the first resonance unit 21 to rotate, the first flexible spring 5 of the first resonance unit 21 drives the first shaft 23 to rotate, and the second resonance unit 22 drives the first resonance unit 22 to rotate, and the first resonance unit 22 drives the first resonance unit 22 to rotate.

It should be noted that the connection manner of the mass block 6 to the output assembly 3 and the input assembly 9 is not limited, for example: the mass block 6 is clamped, adhered, inserted, integrally formed and the like with the output assembly 3 and the input assembly 9, and the insertion is taken as an example: the mass block 6 is provided with a third hole 64 penetrating through the axis 1 along the direction of the axis 1, the output component 3 and the input component 9 are both provided with connecting rods, and the connecting rods penetrate through the third hole 64, so that the mass block 6 is connected with the output component 3 and the input component 9.

In some embodiments, at least one of each resonance unit further includes a second flexible spring 7, the first flexible spring 5 and the second flexible spring 7 are disposed opposite to each other with a gap therebetween, the mass 6 is disposed between the first flexible spring 5 and the second flexible spring 7, one of the second flexible spring 7 and the mass 6 is provided with a second protrusion, and the other of the second flexible spring 7 and the mass 6 is provided with a second groove 63, the second protrusion being disposed to pass through the second groove 63. Specifically, as shown in fig. 3, at least one of the first resonance unit 21 and the second resonance unit 22 further includes a second flexible spring 7, the second flexible spring 7 is disposed opposite to the first flexible spring 5 along the left-right direction, the second flexible spring 7 is disposed on the right side of the mass block 6, and the second groove 63 and the second protrusion may be disposed according to practical situations, for example: the second groove 63 is provided on the left end face of the second flexible spring 7, the second protrusion is provided on the right end face of the mass block 6, or the second protrusion is provided on the left end face of the second flexible spring 7, and the second groove 63 is provided on the right end face of the mass block 6, so that the mass block 6 and the second flexible spring 7 are assembled together by the cooperation of the first protrusion and the first groove 62.

It will be appreciated that the mass 6, the first flexible spring 5 and the second flexible spring 7 are all injection molded from plastic resin, and that the mass 6, the first flexible spring 5 and the second flexible spring 7 may be integrally molded.

In some embodiments, each of the first and second flexible springs 5, 7 includes an annular body 52, a mounting portion 53 disposed within the chamber, a first connection portion 54 having flexibility, and a second connection portion 51.

The annular body 52 forms a closed-loop chamber circumferentially around the axis 1, the axis 1 passing through the centre point of the chamber. Specifically, as shown in fig. 3, the annular body 52 is a flexible material, and the annular body 52 may be any of a circular ring shape, a polygonal shape, an elliptical shape, or the like, the annular body 52 having an outer peripheral surface and an inner peripheral surface in the inner-outer direction, and the center line of the chamber of the annular body 52 coinciding with the axis 1.

The mounting portion 53 is provided with a first hole 531 penetrating the mounting portion 53 in the direction of the axis 1. Specifically, as shown in fig. 3, the mounting portion 53 includes, but is not limited to, a rectangular block, a cylindrical block, an elliptic cylindrical block, a polygonal block, etc., the mounting portion 53 is provided in the chamber, and the outer circumferential surface of the mounting portion 53 and the inner circumferential surface of the annular body 52 are disposed at intervals in the inner and outer directions, a first hole 531 penetrating the mounting portion 53 in the left-right direction is provided in the mounting portion 53, and the first shaft 23 of the electric toothbrush may penetrate the first hole 531 to rotate the mounting portion 53, preferably, the mounting portion 53 may be connected to the first shaft 23 of the electric toothbrush in such a manner that the first shaft 23 rotates the mounting portion 53.

The first connecting portion 54 has a first end operatively engaged with the inner peripheral surface of the annular body 52, and a second end operatively engaged with the outer peripheral surface of the mounting portion 53, the first connecting portion 54 extending in the radial direction of the axis 1. As shown in fig. 3, the first connecting portion 54 is provided between the mounting portion 53 and the annular body 52, one end of the first connecting portion 54 is connected to the inner peripheral surface of the annular body 52, and the other end of the first connecting portion 54 is connected to the outer peripheral surface of the mounting portion 53, whereby the mounting portion 53 and the annular body 52 are connected by the first connecting portion 54, the first connecting portion 54 is elongated and the first connecting portion 54 is a flexible material as seen in the direction of the axis 1, and the mounting portion 53 rotates relative to the annular body 52 by the first connecting portion 54.

The second connecting portion 51 is connected to the annular body 52 and is disposed at intervals along the circumferential direction of the axis 1 with the first connecting portion 54. Specifically, as shown in fig. 3, the second connection portion 51 may be directly or indirectly mounted on the annular body 52 according to the arrangement.

When the mounting portion 53 rotates, the first connecting portion 54 may elastically deform to drive the annular body 52 to rotate around the axis 1, or when the second connecting portion 51 drives the annular body 52 to rotate, the first connecting portion 54 may elastically deform to drive the mounting portion 53 to rotate around the axis 1. Specifically, the first connection portion 54 is a main spring, the annular body 52 is an auxiliary spring, the first connection portion 54 and the annular body 52 together form a spring body, when the mounting portion 53 rotates in the R direction along the axis 1, the annular body 52 deforms, the second stiffness of the first connection portion 54 and the first stiffness of the annular body 52 make the second connection portion 51 resist rotation of the mounting portion 53 in the R direction, or when the second connection portion 51 rotates in the R direction along the axis 1, the annular body 52 deforms, and the second stiffness of the first connection portion 54 and the first stiffness of the annular body 52 make the mounting portion 53 resist rotation of the second connection portion 51 in the R direction. Wherein the R direction and the R direction may be the same or opposite.

In some embodiments, the second connection portion 51 includes a first segment 511 integrally interposed with the annular body 52, and a second segment 512 protruding from an end surface of the annular body 52, the protruding direction extending along the axis 1. Specifically, as shown in fig. 3, a second connecting portion 51 extending in the left-right direction is provided on one side of the annular body 52 facing the mass block 6, a first section 511 of the second connecting portion 51 is provided on the annular body 52, and a second section 512 of the second connecting portion 51 is provided at one end of the first section 511 and is inserted into the mass block 6, so as to be connected with the mass block 6 of the electric toothbrush through the second connecting portion 51, so that the mass block 6 is driven to rotate by a flexible spring.

In some embodiments, the mass block 6 is provided with a third connecting portion and a fourth connecting portion, the third connecting portion and the fourth connecting portion are arranged at intervals along the circumferential direction of the axis 1, one of the second connecting portion 51 and the third connecting portion of the first flexible spring 5 is a first groove 62, the other of the second connecting portion 51 and the third connecting portion of the first flexible spring 5 is a first protrusion, and the first protrusion is arranged in the first groove 62 in a penetrating manner so that the first flexible spring 5 is connected with the mass block 6. One of the second connection part 51 and the fourth connection part of the second flexible spring 7 is a second groove 63, and the other of the second connection part 51 and the fourth connection part of the second flexible spring 7 is a second protrusion, and the second protrusion is penetrated in the second groove 63 so that the second flexible spring 7 is connected with the mass block 6.

Specifically, the second connection portion 51 of the first flexible spring 5 may be the first protrusion in the above embodiment, the third connection portion may be the first groove 62 in the above embodiment, or the second connection portion 51 of the first flexible spring 5 may be the first groove 62 in the above embodiment, the third connection portion may be the first protrusion in the above embodiment, the second connection portion 51 of the second flexible spring 7 may be the second protrusion in the above embodiment, the fourth connection portion may be the second groove 63 in the above embodiment, or the second connection portion 51 of the second flexible spring 7 may be the second groove 63 in the above embodiment, the fourth connection portion may be the second protrusion in the above embodiment, and the third connection portion and the fourth connection portion are alternately arranged along the circumferential interval of the mass block 6, when the first flexible spring 5 and the second flexible spring 7 are mounted on the mass block 6, the straight line between the two second connection portions 51 of the first flexible spring 5 is the first straight line, the straight line between the two second connection portions 7 is the straight line, the second straight line between the two connection portions of the second flexible spring 7 is the straight line, and the right and the straight line between the two connection portions of the second flexible spring 7 is the straight line, the right and the straight line between the two connection portions of the first flexible spring 6 is more equal, thereby the right and left rotation forces are more balanced, and the right rotation forces are ensured.

In some embodiments, the line connecting the third connection of the mass 6 to the center of the mass 6 is a first straight line, the line connecting the fourth connection of the mass 6 to the center of the mass 6 is a second straight line, and the first and second straight lines intersect and are at 90 ° as seen in the direction of the axis 1. Therefore, a 180-degree phase difference exists when the first flexible spring 5 and the second flexible spring 7 rotate, the stability of rotation of the transmission assembly is further improved, and resonance of the first flexible spring 5 and the second flexible spring 7 is facilitated.

In some embodiments, the first protrusion and the second protrusion each comprise a first segment 511 and a second segment 512, the first segment 511 being provided on the annular body 52, the second segment 512 being provided at one end of the first segment 511, the second segment 512 being located within the first segment 511, as seen in the direction of the axis 1 (from left to right or from right to left). Specifically, as shown in fig. 3, the first section 511 is formed on the outer peripheral surface of the annular body 52, the second section 512 extends from the left end face of the first section 511 from left to right, and the cross-sectional area of the second section 512 is smaller than that of the first section 511, so that the left end face of the first section 511 can be abutted against the right end face of the groove, thereby positioning the third connection portion and the second connection portion 51 to the left and right, and making the first protrusion and the second protrusion more reasonable.

It will be appreciated that the length of the second section 512 of the first flexible spring 5 along the left-right direction is not greater than the depth of the first groove 62, and the second section 512 of the first flexible spring 5 and the first groove 62 may be connected by interference fit, adhesion, clamping, or the like, the length of the second section 512 of the second flexible spring 7 along the left-right direction is not greater than the depth of the second groove 63, and the second section 512 of the second flexible spring 7 and the second groove 63 may be connected by interference fit, adhesion, clamping, or the like.

In some embodiments, the first connection portion 54 gradually expands in orientation having a component perpendicular to the extension line of the first connection portion 54 from the inner peripheral surface of the annular body 52 to the outer peripheral surface of the mounting portion 53, as seen in the direction of the axis 1. Specifically, as shown in fig. 3, the cross-sectional area of the first connecting portion 54 gradually decreases from outside to inside along the inside-outside direction, in other words, the cross-sectional area of the first connecting portion 54 connected with the mounting portion 53 is larger than the cross-sectional area of the first connecting portion 54 connected with the annular body 52, because the mounting portion 53 drives the annular body 52 to rotate through the first connecting portion 54, the cross-sectional area of the first connecting portion 54 connected with the mounting portion 53 is larger, the stability of the flexible spring is improved, the cross-sectional area of the first connecting portion 54 connected with the annular body 52 is smaller, the elastic deformation amount of the first connecting portion 54 is improved, the annular body 52 is driven to rotate around the circumferential direction of the annular body 52 through the first connecting portion 54, in addition, the stress concentration caused by deformation of the first connecting portion 54 can be eliminated, and the fatigue life of the first connecting portion 54 can be improved.

In some embodiments, the first connection portion 54 is a plurality of first connection portions 54 that are circumferentially spaced along the axis 1. Specifically, as shown in the figures and the drawings, the number of the first connection portions 54 may be two or more, for example, two first connection portions 54 (two as shown in fig. 3) are provided in the embodiment of the present invention, and the two first connection portions 54 are disposed at equal intervals along the circumferential direction of the annular body 52, so that the first flexible spring 5 and the second flexible spring 7 are disposed more reasonably, and the stability of the first flexible spring 5 and the second flexible spring 7 is improved.

In some embodiments, the second connection portion 51 is a plurality of second connection portions 51 arranged at intervals along the circumference of the axis 1. Specifically, as shown in the figures and the drawings, the number of the second connection parts 51 may be two or more, for example, two second connection parts 51 (two as shown in fig. 3), and the two second connection parts 51 are disposed at equal intervals along the circumferential direction of the annular body 52, and the distances between the center lines of the two second connection parts 51 and the center line of the mounting part 53 are equal, so that the stability of the rotation of the mass block 6 is improved.

In some embodiments, the connection point of the other end of the first connection portion 54 with the annular body 52 is disposed at a circumferential interval of the axis 1 from the second connection portion 51. Specifically, as shown in fig. 3, the connection point of the other end of the first connection portion 54 with the annular body 52 is offset from the second connection portion 51 in the circumferential direction of the annular body 52. Thereby, the rotational force on the mounting portion 53 is transmitted to the ring-shaped body 52 through the first connecting portion 54, and is transmitted to the second connecting portion 51 through the ring-shaped body 52, so that the rotational displacement of the second connecting portion 51 is improved by the deformation amount of the second connecting portion 51, and the rotational displacement of the mass block 6 is further improved.

Preferably, the connection points of the other ends of the first connection portions 54 with the annular body 52 and the second connection portions 51 are alternately arranged on the annular body 52 at equal intervals, in other words, the plurality of first connection portions 54 are arranged at equal intervals in the circumferential direction of the axis 1 and the plurality of second connection portions 51 are arranged at equal intervals in the circumferential direction of the axis 1, and the first connection portions 54 are arranged between two adjacent first connection portions 54, whereby the stability of the rotation of the mass block 6 is further improved.

In some embodiments, the mass 6 is provided with a second hole 61 penetrating the mass 6 in the direction of the axis 1, the first shaft 23 is penetrated in the second hole 61, and the outer peripheral surface of the first shaft 23 and the inner peripheral surface of the second hole 61 are disposed at intervals. Specifically, as shown in fig. 3, the mass 6 is provided with a second hole 61 penetrating the mass 6 in the left-right direction, the first shaft 23 may be penetrated through the second hole 61, and the outer circumferential surface of the first shaft 23 and the inner circumferential surface of the second hole 61 are disposed at intervals in the inner-outer direction, so that the first shaft 23 and the mass 6 do not affect each other.

In some embodiments, each of the first and second flexible springs 5, 7 further includes a connection plate 55 having flexibility, the connection plate 55 extending in a radial direction of the axis and being provided within the chamber, the connection plate 55 having a first end operatively engaged with the inner peripheral surface of the annular body 52 and a second end operatively engaged with the outer peripheral surface of the second connection portion 51, the outer peripheral surface of the second connection portion 51 and the outer peripheral surface of the mounting portion 53 being disposed at radial intervals along the axis, the connection plate 55 and the first connection portion 54 being disposed at circumferential intervals along the axis. Specifically, as shown in fig. 4 to 8, the connection plate 55 is a flexible rectangular plate, the connection plate 55 is disposed in the chamber and one end of the connection plate 55 is connected to the inner circumferential surface of the annular body 52, the other end of the connection plate 55 is connected to the second connection portion 51, the second connection portion 51 may be a third protrusion, the outer circumferential surface of the second connection portion 51 and the inner circumferential surface of the mounting portion 53 are disposed at intervals in the inner-outer direction, thereby the annular body 52 and the mounting portion 53 are formed into a whole through the connection plate 55, and the first connection portion 54 and the connection plate 55 are disposed at intervals in the circumferential direction of the annular body 52, thereby, when the first flexible spring 5 and the second flexible spring 7 rotate, the connection plate 55 drives the second connection portion 51 to rotate through the annular body 52, the displacement of the second connection portion 51 on the annular body 52 is improved, and the resonance energy of the first flexible spring 5 and the second flexible spring 7 is improved.

In some embodiments, the connection plate 55 is gradually unfolded from an inner peripheral surface of the annular body 52 to an outer peripheral surface of the mounting portion 53 in a cross section where an extension line of the connection plate 55 is located, with an orientation of a perpendicular component to the extension line of the connection plate 55. Specifically, as shown in fig. 4 to 8, the cross-sectional area of the connection plate 55 is gradually reduced from inside to outside as seen in the cross-section of the connection plate 55, in other words, the cross-sectional area of the connection plate 55 adjacent to the mounting portion 53 is larger than the cross-sectional area of the connection plate 55 connected to the annular body 52, thereby eliminating stress concentration of the connection plate 55 due to deformation and improving the fatigue life of the connection plate 55.

In some embodiments, the first connection portion 54 is a plurality of first connection portions 54 that are circumferentially spaced along the axis. Specifically, as shown in fig. 4 to 8, the first connection portions 54 are disposed at equal intervals along the circumferential direction of the mounting portion 53, so that stability and force transmission performance of the first and second flexible springs 5 and 7 are improved, and the first and second flexible springs 5 and 7 are disposed more reasonably.

In some embodiments, the connection plate 55 is a plurality of connection plates 55, and the plurality of connection plates 55 are disposed at intervals along the circumferential direction of the axis. Specifically, as shown in fig. 4 to 8, the connection plates 55 are disposed at equal intervals along the circumferential direction of the mounting portion 53, so that stability and force transmission performance of the first and second flexible springs 5 and 7 are improved, and the first and second flexible springs 5 and 7 are disposed more reasonably.

In some embodiments, the number of first connection portions 54 and the number of connection plates 55 are equal. Therefore, when the mounting portion 53 transmits force to the annular body 52 through the first connecting portion 54 or transmits force to the annular body 52 through the second connecting portion 51 through the connecting plate 55, the number of the first connecting portions 54 and the number of the connecting plates 55 are equal, so that deformation of each position of the annular body 52 is substantially consistent, stress of the annular body 52 is balanced, stress distribution is uniform, and service life of the annular body 52 is prolonged.

It is to be understood that the number of the first connection portions 54 and the number of the connection plates 55 according to the embodiment of the present invention may be different according to actual needs, for example: the number of first connection portions 54 is greater than the number of connection plates 55, or the number of first connection portions 54 is less than the number of connection plates 55.

In some embodiments, at least one first connection portion 54 is provided between two adjacent connection plates 55, and the plurality of first connection portions 54 and the plurality of connection plates 55 are each provided at equal intervals along the circumferential direction of the axis. Specifically, as shown in fig. 4 to 8, a first connecting portion 54 and a connecting plate 55 are alternately arranged in turn in the circumferential direction of the mounting portion 53, so that the deformation of each position of the annular body 52 is further ensured to be substantially uniform, the stress distribution to which the annular body 52 is subjected is more uniform, and the service life of the annular body 52 is ensured.

In some embodiments, as shown in fig. 4-8, the mass 6 is located between the first flexible spring 5 and the output assembly 3, and the second shaft 32 is connected to the mass 6, where a plug portion 65 is provided on a side of the mass 6 facing the first flexible spring, a slot extending along the axial direction of the axis is provided on the plug portion 65, the plug portion 65 is disposed in the cavity in a penetrating manner, and the second connection portion 51 is plugged in the slot. Thereby, the first flexible spring and the mass 6 are assembled as one unit, so that the resonance energy is transferred to the second shaft 32 of the output assembly 3.

In some embodiments, the mounting portion 53 is provided with a first hole 531 penetrating the mounting portion 53 along the axis 1, and the first shaft 23 is disposed through the first hole 531, so that the first shaft 23 drives the first hole 531 to rotate. Specifically, as shown in fig. 3, the first hole 531 penetrating the mounting portion 53 in the left-right direction is formed in the mounting portion 53, and the first shaft 23 of the electric toothbrush may be passed through the first hole 531 to rotate the mounting portion 53.

It is understood that the first hole 531 may be a special-shaped hole, and the opposite hole includes, but is not limited to, an oval shape, a polygonal shape, and the like, and the outer peripheral surface of the first shaft 23 is provided with a special-shaped surface that mates with the opposite hole, so that the first shaft 23 mates with the first hole 531, so that the first shaft 23 drives the mounting portion 53 to rotate, or the first hole 531 mates with the first shaft 23 in an interference fit or through a fastener, and the like.

In some embodiments, the first hole 531 includes a straight section and an arc section, when viewed from the axis 1, one end of the straight section is connected to one end of the arc section, the other end of the straight section is connected to the other end of the arc section, and the arc length of the arc section is greater than one half of the same circle. Specifically, as shown in fig. 3, one end of the straight section is connected with one end of the arc section, and the other end of the straight section is connected with the other end of the arc section, so that a semicircular hole is formed in a projection plane orthogonal to the left-right direction of the first hole 531, a matching portion which is matched with the first hole 531 and has a semicircular cross section is arranged on the first shaft 23, the matching portion of the first shaft 23 is arranged in the first hole 531 in a penetrating manner, the first shaft 23 drives the mounting portion 53 to rotate, in addition, the arc length of the arc section is greater than one half of the same circle, the cross section of the matching portion of the first shaft 23 can not be too small, the rigidity of the first shaft 23 is guaranteed, and the service life of the first shaft 23 is prolonged.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

For purposes of this disclosure, the terms "one embodiment," "some embodiments," "example," "a particular example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While the above embodiments have been shown and described, it should be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives, and variations of the above embodiments may be made by those of ordinary skill in the art without departing from the scope of the invention.

Claims

1. A resonant assembly comprising:

an axis;

The resonance component comprises a first resonance unit, a second resonance unit and a first shaft, wherein the first shaft extends along the axial direction and is collinear with the central line of the first shaft, and the first resonance unit and the second resonance unit are arranged on the first shaft in a penetrating way;

The output assembly comprises a support frame, a second shaft, a connecting piece and a bearing, wherein the support frame is arranged on one side of the resonance component, the support frame and the resonance component are arranged at intervals along the axis direction, the support frame is provided with a through hole penetrating through the support frame along the axis direction, the first resonance unit is positioned between the output assembly and the second resonance unit and is connected with the connecting piece, the second shaft extends along the axis direction, one end of the second shaft is operatively combined with the connecting piece, the other end of the second shaft penetrates through the through hole, the second shaft can rotate around the axis direction, the outer peripheral surface of the second shaft and the inner peripheral surface of the through hole are arranged at intervals along the radial direction of the axis, and the bearing is supported in the through hole and is arranged on the second shaft;

The input assembly is arranged on one side of the resonance component, which is far away from the output assembly, and is connected with the second resonance unit;

And exciting the second resonance unit to rotate at the input assembly, driving the first resonance unit to rotate in opposite directions through the first shaft so as to enable the first resonance unit and the second resonance unit to resonate, and transmitting resonance energy to the second shaft through the connecting piece.

2. The resonating assembly of claim 1, further comprising a bracket having a mounting cavity, wherein the resonating member and the output assembly are both disposed within the mounting cavity, wherein the first resonating unit and the second resonating unit are both disposed radially spaced from the bracket along the axis, and wherein the bracket is disposed within the mounting cavity and is coupled to the bracket.

3. The resonant assembly of claim 1, wherein at least one of the first resonant unit and the second resonant unit comprises a first flexible spring and a mass, the mass of the first resonant assembly is connected to the output assembly, the mass of the second resonant assembly is connected to the input assembly, one of the first flexible spring and the mass is provided with a first protrusion, the other of the first flexible spring and the mass is provided with a first groove, the first protrusion is disposed in the first groove in a penetrating manner, and the first flexible spring is disposed in the first shaft in a penetrating manner;

The first shaft drives the first flexible spring to rotate, the first flexible spring drives the mass block to rotate, or the mass block drives the first flexible spring to rotate, and the first flexible spring drives the first shaft to rotate.

4. A resonant assembly according to claim 3, wherein at least one of the first and second resonant elements further comprises a second flexible spring, the second flexible spring and the second flexible spring being disposed in spaced opposition along the axis, the mass being disposed between the first and second flexible springs, one of the second flexible spring and the mass being provided with a second protrusion, the other of the second flexible spring and the mass being provided with a second recess, the second protrusion being disposed through the second recess.

5. The drive assembly of claim 4, wherein each of the first and second flexible springs comprises:

An annular body surrounding along a circumference of the axis to form a closed-loop chamber, the axis passing through a center point of the chamber;

the mounting part is arranged in the cavity, and a first hole penetrating through the mounting part along the axis direction is formed in the mounting part;

A first connecting portion having flexibility, the first connecting portion having a first end operatively engaged with an inner peripheral surface of the annular body and a second end operatively engaged with an outer peripheral surface of the mounting portion, the first connecting portion extending in a radial direction of the axis; and

The second connecting part is connected with the annular body and is arranged at intervals along the circumferential direction of the axis with the first connecting part;

When the installation part rotates, the first connecting part can generate elastic deformation to drive the annular body to rotate around the axis, or when the second connecting part drives the annular body to rotate, the first connecting part can generate elastic deformation to drive the installation part to rotate around the axis.

6. The drive assembly of claim 5, wherein the second connection portion includes a first segment integrally interposed with the annular body and a second segment protruding from an end face of the annular body, the protruding direction extending along the axis.

7. The drive assembly of claim 5, wherein each of the first and second flexible springs further comprises a web having flexibility, the web extending in a radial direction of the axis and being disposed within the chamber, the web having a first end operatively engaged with an inner peripheral surface of the annular body and a second end operatively engaged with an outer peripheral surface of the second connecting portion, the outer peripheral surface of the second connecting portion and the outer peripheral surface of the mounting portion being disposed at radial intervals along the axis, the web and the first connecting portion being disposed at circumferential intervals along the axis.

8. The drive assembly of claim 5, wherein the mass is provided with a third connecting portion and a fourth connecting portion, the third connecting portion and the fourth connecting portion are circumferentially spaced along the axis, one of the second connecting portion and the third connecting portion of the first flexible spring is the first groove, the other of the second connecting portion and the third connecting portion of the first flexible spring is the first protrusion, the first protrusion is inserted into the first groove so that the first flexible spring and the mass are connected,

One of the second connecting part and the fourth connecting part of the second flexible spring is the second groove, the other one of the second connecting part and the fourth connecting part of the second flexible spring is the second bulge, and the second bulge is arranged in the second groove in a penetrating way so that the second flexible spring is connected with the mass block.

9. The drive assembly of claim 5, wherein a line connecting the third connection of the mass and the center of the mass is a first straight line, and a line connecting the fourth connection of the mass and the center of the mass is a second straight line, the first and second straight lines intersecting and being 90 ° as viewed in the direction of the axis.

10. The resonating assembly of claim 1, wherein the input assembly comprises:

A stator assembly having at least one coil, the stator assembly further comprising a stator core having first and second stator cores extending in the axial direction and disposed opposite each other in a radial direction of the axis, and a third core disposed at an angle to the axis, the at least one coil being disposed on the third core around an outside of the third core; and

And the rotor assembly is at least partially rotatably arranged between the first stator core and the second stator core, and is connected with the second resonance unit so that the rotor assembly drives the second resonance unit to rotate.

11. The resonant assembly of claim 1, wherein the rotor assembly comprises a first magnet assembly, a second magnet assembly, and a rotor support extending at least partially between the first stator core and the second stator core, the outer circumferential surface of the rotor support being spaced apart from the inner circumferential surface of the first stator core, the inner circumferential surface of the second stator core along a radial direction of the axis, the first magnet assembly and the second magnet assembly being disposed on the rotor support in radially spaced opposition along the axis, at least a portion of the first stator core and the first magnet assembly forming an air gap between end surfaces that are in close proximity to each other, and at least a portion of the second stator core and the second magnet assembly forming an air gap between end surfaces that are in close proximity to each other;

The first magnet assembly and the second magnet assembly both comprise a first magnetization area and a second magnetization area with opposite magnetic poles, the first magnetization area of the first magnet assembly and the first magnetization area of the second magnet assembly are adjacently arranged at intervals when seen along the axial direction, and the second magnetization area of the first magnet assembly and the second magnetization area of the second magnet assembly are adjacently arranged at intervals.

12. The resonant assembly of claim 11, wherein the input assembly further comprises a third shaft and a mounting seat, the mounting seat is arranged between the stator assembly and the rotor assembly, the stator assembly, the rotor assembly and the mounting seat are arranged at intervals along the axial direction, the first stator core and the second stator core are connected with the mounting seat, a mounting hole extending along the axial direction is arranged on one side of the mounting seat facing the rotor assembly,

The third shaft extends along the axis direction, one end of the third shaft is operatively combined with the rotor support, the other end of the third shaft is rotatably arranged in the mounting hole in a penetrating mode, and the outer peripheral surface of the third shaft and the inner peripheral surface of the mounting hole are arranged at intervals along the radial direction of the axis.