CN219351501U - Driving assembly and electric toothbrush - Google Patents

Driving assembly and electric toothbrush Download PDF

Info

Publication number
CN219351501U
CN219351501U CN202223613437.1U CN202223613437U CN219351501U CN 219351501 U CN219351501 U CN 219351501U CN 202223613437 U CN202223613437 U CN 202223613437U CN 219351501 U CN219351501 U CN 219351501U
Authority
CN
China
Prior art keywords
assembly
elastic
mass
extension axis
connecting portion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202223613437.1U
Other languages
Chinese (zh)
Inventor
魏宏敏
曾梦伟
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen Sushi Technology Co Ltd
Original Assignee
Shenzhen Sushi Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shenzhen Sushi Technology Co Ltd filed Critical Shenzhen Sushi Technology Co Ltd
Priority to CN202223613437.1U priority Critical patent/CN219351501U/en
Application granted granted Critical
Publication of CN219351501U publication Critical patent/CN219351501U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Brushes (AREA)

Abstract

The driving assembly comprises a supporting frame, a shaft with first rigidity and a plurality of elastic assemblies penetrating through the shaft, wherein a cavity is formed in the supporting frame, the shaft comprises a central node and an extending axis, a first section where the central node is located is penetrated in the cavity, the elastic assemblies are arranged at two sides of the central node of the shaft at intervals along the extending axis, each elastic assembly comprises a first flexible spring and a mass block, one of the first flexible spring and the mass block is provided with a first bulge, the other of the first flexible spring and the mass block is provided with a first groove, the first bulge penetrates through the first groove, when one of the elastic assemblies is excited to rotate, the shaft drives the other elastic assemblies to rotate in different directions, and torque generated by rotation of the spring assemblies at two sides of the central node is basically counteracted at the central node. The driving component has the advantages of low shock feeling, high power and the like.

Description

Driving assembly and electric toothbrush
Technical Field
The present utility model relates to personal care appliances, and in particular, to a drive assembly and an electric toothbrush.
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 assembly process of the electric toothbrush is complex, and the processing and manufacturing costs are high.
Disclosure of Invention
The present utility model has been made based on the findings and knowledge of the inventors regarding the following facts and problems:
in the related art, the spring structure of the electric toothbrush is complicated in process, for example: patent number CN 113543748A-flexible spring and motor assembly, the internal structure of the electric toothbrush is complex, the spring is assembled by a plurality of fasteners, the assembly cost is high, the process is troublesome, the assembly is difficult, and the cost is high.
The present utility model aims to solve at least one of the technical problems in the related art to some extent. For this purpose, embodiments of the utility model provide a drive assembly that is simple in construction and assembly.
The embodiment of the utility model provides an electric toothbrush with low cost and simple internal structure.
The driving assembly of the embodiment of the utility model comprises: the support frame is provided with a cavity; a shaft having a first stiffness, the shaft comprising a central node and an extension axis, a first section in which the central node is located being disposed through the cavity; the elastic assemblies are arranged on two sides of a central node of the shaft at intervals along the extending axis, each elastic assembly comprises a first flexible spring and a mass block, one of the first flexible spring and the mass block is provided with a first bulge, the other of the first flexible spring and the mass block is provided with a first groove, and the first bulge is arranged in the first groove in a penetrating mode; when one of the elastic components is excited to rotate, the shaft drives the other elastic components to rotate in opposite directions, and torque generated by rotation of the spring components on two sides of the center node is basically counteracted at the center node.
The driving component provided by the embodiment of the utility model is provided with the supporting frame, the shaft and the elastic component, so that the driving component has fewer parts compared with the related art, and is simple in assembly procedure and low in cost, thereby reducing the processing and manufacturing cost of the driving component.
In some embodiments, the plurality of elastic components includes a first elastic component and a second elastic component, the first elastic component being equidistant from the center node and the second elastic component being equidistant from the center node.
In some embodiments, each elastic assembly further comprises a second flexible spring, the second flexible springs and the second flexible springs are arranged opposite to each other along the extension axis at intervals, the mass block is arranged between the first flexible springs and the second flexible springs, one of the second flexible springs and the mass block is provided with a second protrusion, the other of the second flexible springs 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 in a circumferential direction of the extension axis to form a closed-loop chamber, the extension 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 extending 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 extension axis; the second connecting part comprises a first section integrally penetrating with the annular body and a second section protruding from the end face of the annular body, and the protruding direction extends along the extending axis; when the installation part rotates, the first connecting part can generate elastic deformation to drive the annular body to rotate around the extension 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 extension 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 extension 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, and 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 extension axis.
In some embodiments, the first projection and the second projection each comprise a first section and a second section, the first section being provided on the annular body, the second section being provided at one end of the first section, the second section being located within the first section as seen in the direction of the extension axis.
In some embodiments, the first connection portion has an orientation that gradually expands from an inner peripheral surface of the annular body to an outer peripheral surface of the mounting portion, as viewed in a cross section where an extension line of the first connection portion is located.
In some embodiments, the first connecting portions are a plurality of, the plurality of first connecting portions are disposed at intervals along the circumference of the extension axis, and/or the second connecting portions are a plurality of, the plurality of second connecting portions are disposed at intervals along the circumference of the extension axis.
In some embodiments, the connection point of the other end of the first connection portion with the annular body and the second connection portion are disposed at a circumferential interval of the extension axis.
In some embodiments, the first hole includes a straight section and an arc section, 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 section has a circular arc length greater than one half of the same circle, or the first hole has a circular peripheral contour.
In some embodiments, the support stand comprises: the first section of the shaft is rotatably arranged in the cavity of the body in a penetrating way. The first clamping part and the second clamping part are oppositely arranged along the radial interval of the extension axis in the inner and outer directions, and the first clamping part and the second clamping part are suitable for being matched with the clamping of the shell of the electric toothbrush.
An electric toothbrush according to an embodiment of the present utility model includes: a housing for holding; a driving assembly provided in the housing, the driving assembly being any one of the driving assemblies described in the above embodiments, a supporting frame of the driving assembly being supported in the housing, an outer peripheral surface of a first elastic assembly of the driving assembly and an inner peripheral surface of the housing being disposed at intervals in a radial direction of the extension axis, an outer peripheral surface of a second elastic assembly of the driving assembly and an inner peripheral surface of the housing being disposed at intervals in an inner-outer direction; the motor is arranged in the shell and is connected with the first elastic component; and a toothbrush assembly connected to the second resilient assembly; the motor is excited to drive the first elastic component to rotate, the first elastic component drives the shaft of the driving component to drive the second elastic component to rotate, so that the first elastic component and the second elastic component resonate, and the second elastic component drives the toothbrush component to vibrate.
The electric toothbrush provided by the embodiment of the utility model is provided with the shell, the driving assembly, the motor and the toothbrush assembly, so that the assembly process of the electric toothbrush is simple, and the internal parts of the electric toothbrush are reduced, thereby reducing the processing and manufacturing cost of the electric toothbrush
In some embodiments, the motor comprises: a stator assembly having at least one coil, the stator assembly being provided within the housing, the stator assembly further comprising a stator core having first and second stator cores extending in the direction of the extension axis and disposed in opposition at intervals in a radial direction of the extension axis, and a third core disposed at an angle to the extension axis, the at least one coil being disposed on the third core around an outside of the third core; and a rotor assembly provided in the housing, the rotor assembly including a first magnet assembly, a second magnet assembly, and a rotor bracket that extends at least partially between the first stator core and the second stator core, an outer circumferential surface of the rotor bracket 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 extension axis, the first magnet assembly and the second magnet assembly being disposed on the rotor bracket at radial intervals along the extension axis, at least a portion of the first stator core and the first magnet assembly forming an air gap between end surfaces that are adjacent 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 adjacent 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 extending axis 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 motor further comprises a mounting bracket mounted in the housing, the mounting bracket is located between the third core and the rotor support, and the first stator core and the second stator core are threaded on the mounting bracket.
In some embodiments, the electric toothbrush further comprises an output support, two ends of the output support are respectively connected with the toothbrush component and the mass block of the first elastic component of the driving component, the rotor support is connected with the mass block of the second elastic component of the driving component, so that when the mass block of the first elastic component is excited to rotate by the motor of the rotor support, the mass block of the first elastic component drives the shaft to rotate, and the shaft drives the mass block of the second elastic component to rotate, so that the output support is driven to rotate.
In some embodiments, the mass block of the driving assembly is further provided with a third hole penetrating through the mass block along the extending axis, a third protrusion penetrating through the third hole is arranged on one side of the output support, facing the first elastic assembly of the driving assembly, the third protrusion penetrates through the third hole of the mass block of the first elastic assembly of the driving assembly, a fourth protrusion penetrating through the third hole of the mass block of the second elastic assembly of the driving assembly is arranged on one side of the rotor support, facing the second elastic assembly of the driving assembly, of the output support, and the fourth protrusion penetrates through the third hole of the mass block of the second elastic assembly of the driving assembly.
In some embodiments, the support frame of the driving assembly further includes a protrusion provided at an outer circumferential side of the support frame, the protrusion being connected to the housing.
Drawings
Fig. 1 is a perspective view of an electric toothbrush in accordance with an embodiment of the present utility model.
Fig. 2 is a schematic view of the structure of an electric toothbrush according to an embodiment of the present utility model.
Fig. 3 is a schematic view of the structure of a removed portion of a housing of an electric toothbrush in accordance with an embodiment of the present utility model.
Fig. 4 is an exploded view of an electric toothbrush according to an embodiment of the present utility model.
Fig. 5 is a cross-sectional view of a rotor support of an electric toothbrush in accordance with an embodiment of the present utility model.
Fig. 6 is a schematic structural view of a first elastic member of an electric toothbrush according to an embodiment of the present utility model.
Fig. 7 is a schematic structural view of a mass of an electric toothbrush in accordance with an embodiment of the present utility model.
Fig. 8 is a schematic structural view of a first flexible spring of an electric toothbrush according to an embodiment of the present utility model.
Fig. 9 is a schematic structural view of a supporting frame of an electric toothbrush according to an embodiment of the present utility model.
Fig. 10 is a schematic structural view of an output holder of an electric toothbrush according to an embodiment of the present utility model.
Fig. 11 is a schematic structural view of a rotor holder of an electric toothbrush according to an embodiment of the present utility model
Reference numerals:
an electric toothbrush 100;
a drive assembly 1; a support frame 11; a body 111; a first clamping portion 112; a second engaging portion 113; a projection 114; a cavity 115;
a shaft 12; an elastic member 13; a first elastic member 131; a second elastic member 132;
a first flexible spring 1321; a first protrusion 13211; a first segment 132111; a second section 132112;
a mass 1322; a second bore 13221; a first groove 13222; a second groove 13223; a third bore 13224;
a second flexible spring 1323; a second protrusion 13231;
an annular body 14; a mounting portion 15; a first hole 151; a straight section 1511; an arcuate segment 1512; a first connection portion 16;
a motor 2; a coil 21; a first stator core 22; a second stator core 23; a rotor holder 25; a fifth hole 251; a fourth protrusion 252; a third groove 253; a first magnet assembly 26; a first magnetized region 261; second magnetization tends 26 to second magnet assembly 27; a mounting bracket 28; an output bracket 29; first connection plate 291; a third projection 292; a toothbrush assembly 3; a housing 4; and a battery 5.
Detailed Description
Reference will now be made in detail to embodiments of the present utility model, 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 utility model and should not be construed as limiting the utility model.
An electric toothbrush according to an embodiment of the present utility model is described below with reference to the accompanying drawings.
As shown in fig. 1 to 11, the electric toothbrush 100 according to the embodiment of the present utility model includes a housing 4, a driving assembly 1 provided in the housing 4, and a toothbrush assembly 3 in which a motor 2 provided in the housing 4 is connected to a second elastic assembly 132.
The drive assembly 1 includes a support frame 11, a shaft 12 having a first rigidity, and a plurality of elastic assemblies 13 penetrating the shaft 12.
The housing 4 is for holding. The supporting frame 11 of the driving assembly 1 is supported in the housing 4, a cavity 115 is provided on the supporting frame 11, and the outer peripheral surfaces of the plurality of elastic assemblies 13 of the driving assembly 1 and the inner peripheral surface of the housing 4 are arranged at intervals along the radial direction of the extension axis (the inner and outer directions as shown in fig. 3). Specifically, as shown in fig. 1-4, the supporting frame 11 is fixed in the housing 4, the supporting frame 11 is provided with a cavity 115 penetrating the supporting frame 11 along the left-right direction, and the aperture of the cavity 115 is larger than the outer diameter of the shaft 12, so that the shaft 12 can be rotatably penetrated in the cavity 115, in addition, the plurality of elastic components 13 are penetrated on the shaft 12, and the outer circumferential surfaces of the plurality of elastic components 13 and the inner circumferential surface of the housing 4 are arranged at intervals along the inner-outer direction, so that the plurality of elastic components 13 are suspended in the housing 4 through the supporting frame 11, and when the plurality of elastic components 13 rotate, the plurality of elastic components 13 collide with or wear with the housing 4, thereby prolonging the service lives of the plurality of elastic components 13 and the housing 4.
The shaft 12 includes a central node and an axis of extension, with a first section of the central node passing through the cavity 115. Specifically, as shown in fig. 2-3, the shaft 12 has a first section extending from the center stage in the left-right direction, respectively, and the portion of the shaft that extends through the cavity 115 is more reasonable.
The plurality of elastic assemblies 13 are disposed at two sides of a central node of the shaft 12 at intervals along the extension axis, each elastic assembly 13 comprises a first flexible spring 1321 and a mass block 1322, one of the first flexible spring 1321 and the mass block 1322 is provided with a first protrusion 13211, the other of the first flexible spring 1321 and the mass block 1322 is provided with a first groove 13222, and the first protrusion 13211 is arranged in the first groove 13222 in a penetrating manner. In particular, as shown in fig. 6 to 8, the plurality of elastic assemblies 13 are all penetrated on the shaft 12 and uniformly distributed on both left and right sides of the center node of the shaft 12, in other words, one part of the elastic assemblies 13 is distributed on the left side of the support frame 11 and penetrated on the shaft 12, and the other part of the elastic assemblies 13 is distributed on the right side of the support frame 11 and penetrated on the shaft 12, each elastic assembly 13 includes a first flexible spring 1321 and a mass block 1322, and the first flexible spring 1321 and the mass block 1322 are penetrated together in cooperation through the first protrusion 13211 and the first groove 13222, so that the plurality of elastic assemblies 13 are installed in the housing 4.
When one of the elastic components 13 is excited to rotate, the shaft 12 drives the other elastic components 13 to rotate in opposite directions, and torque generated by rotation of the spring components 13 at the two sides of the center node is basically counteracted at the center node. Specifically, rotation of one part of the elastic member 13 and the other part of the elastic member 13 in opposite directions, in other words, rotation of one part of the elastic member 13 in a clockwise direction, rotation of the other part of the elastic member 13 in a counterclockwise direction, or rotation of one part of the elastic member 13 in a counterclockwise direction, rotation of the other part of the elastic member 13 in a clockwise direction, is reduced, so that torsional vibration that may be transmitted to a user during operation is reduced, so that torque generated by one part of the elastic member 13 and the other part of the elastic member 13 in a center node can be canceled, so that the user has no shock feeling, and cleaning effect of the electric toothbrush 100 is improved.
The motor 2 is connected to a part of the elastic assembly 13. Specifically, as shown in fig. 2-4, the motor 2 is disposed on the right side of a part of the elastic components 13 and is connected to a part of the elastic components 13, so that the motor 2 drives a part of the elastic components 13 to rotate, wherein a part of the elastic components 13 drives the shaft 12 to rotate, and the shaft 12 drives another part of the elastic components 13 to rotate, and by adjusting the frequency of the motor 2, the part of the elastic components 13 and the another part of the elastic components 13 generate resonance.
The toothbrush assembly 3 is connected to another part of the elastic assembly 13. In particular, as shown in fig. 1 to 4, the toothbrush assembly 3 is provided at the left side of the other part of the elastic assembly 13 and is connected to the mass 1322 of the other part of the elastic assembly 13, whereby the mass 1322 of the other part of the elastic assembly 13 vibrates the toothbrush assembly 3, thereby transmitting the high frequency vibration generated by the driving assembly 1 to the toothbrush assembly 8 so that the toothbrush assembly 8 cleans the teeth of the person.
The motor 2 is excited to drive one part of the elastic components 13 to rotate, wherein one part of the elastic components 13 drives the shaft 12 of the driving component 1 to drive the other part of the elastic components 13 to rotate, so that one part of the elastic components 13 and the other part of the elastic components 13 resonate, and the other part of the elastic components 13 drive the toothbrush component 3 to vibrate. Thereby, the driving assembly 1 is driven to resonate by the motor 2, and resonance energy is transmitted into the toothbrush assembly 3.
In the driving assembly 1 according to the embodiment of the utility model, the supporting frame 11, the shaft 12 and the elastic assembly 13 are arranged, so that the first elastic assembly 131 and the second elastic assembly 132 in the elastic assembly 13 rotate reciprocally along the axial direction of the shaft 12, the rotation directions of the first elastic assembly 131 and the second elastic assembly 132 are opposite, the first elastic assembly 131 and the second elastic assembly 132 form a resonance system to clean teeth of a user, and in addition, compared with the related art, the first flexible spring 1321 and the mass block 1322 are arranged, parts are fewer, assembly procedures are simple, and the cost is low, so that the processing and manufacturing cost of the driving assembly 1 is reduced.
The electric toothbrush 100 of the embodiment of the present utility model, provided with the first protrusions 13211 and the first grooves 13222, reduces the assembly process of the driving assembly 1, and reduces the internal parts of the electric toothbrush 100 relative to the related art, thereby reducing the manufacturing cost of the electric toothbrush 100.
In some embodiments, the plurality of elastic components 13 includes a first elastic component 131 and a second elastic component 132, the first elastic component 131 being equidistant from the center node and the second elastic component 132 being equidistant from the center node. Specifically, as shown in fig. 2-3, a part of the elastic components 13 is a first elastic component 131, another part of the elastic components 13 is a second elastic component 132, and the first elastic component 131 and the second elastic component 132 are symmetrically arranged along the center node in the left-right direction, so that the torque generated by the first elastic component 131 and the second elastic component 13 can be further offset at the center node, and the torsional vibration possibly transmitted to the user during the operation is further reduced.
In some embodiments, at least one of the first elastic component 131 and the second elastic component 132 includes a first flexible spring 1321 and a mass block 1322, one of the first flexible spring 1321 and the mass block 1322 is provided with a first protrusion 13211, the other of the first flexible spring 1321 and the mass block 1322 is provided with a first groove 13222, the first protrusion 13211 is inserted into the first groove 13222, the shaft 12 is inserted into the first flexible spring 1321 and drives the first flexible spring 1321 to rotate, and the first flexible spring 1321 is connected with the mass block 1322.
Specifically, as shown in fig. 6, at least one of the first elastic member 131 and the second elastic member 132 includes a first flexible spring 1321 and a mass block 1322, the mass block 1322 is used to adjust the resonant frequency of the driving member 1, and the first flexible spring 1321 is located at the left side of the mass block 1322, and the first groove 13222 and the first protrusion 13211 may be configured according to practical situations, for example: the first groove 13222 is formed on the right end face of the first flexible spring 1321, the first protrusion 13211 is formed on the left end face of the mass block 1322, or the first protrusion 13211 is formed on the right end face of the first flexible spring 1321, the first groove 13222 is formed on the left end face of the mass block 1322, so that the mass block 1322 of the first elastic assembly 131 and the first flexible spring 1321 are assembled together through the cooperation of the first protrusion 13211 and the first groove 13222, the first flexible spring 1321 is arranged on the shaft 12 in a penetrating manner and can rotate synchronously with the shaft 12, the mass block 1322 and the first flexible spring 1321 are assembled together, the mass block 1322 is driven to rotate by the first flexible spring 1321 through the first flexible spring 1321, compared with the related art, the assembly process of the elastic assembly 13 is reduced, the manufacturing cost of the elastic assembly 13 is reduced, the mass block 1322 of the first elastic assembly 131 is connected with the motor 2, the motor 2 drives the mass block 1322 of the first elastic assembly 131 to rotate, the mass block 1322 of the first elastic assembly 131 drives the first elastic assembly to rotate, the mass block 1322 of the first elastic assembly 131 drives the first flexible assembly 1321 to rotate, the first flexible assembly 132 drives the first elastic assembly 131 to rotate, and the second elastic assembly 132 is driven to rotate by the first elastic assembly 132 to rotate.
In some embodiments, at least one of each elastic assembly 13 further includes a second flexible spring 1323, the first flexible spring 1321 and the second flexible spring 1323 are disposed opposite to each other at intervals, the mass 1322 is disposed between the first flexible spring 1321 and the second flexible spring 1323, one of the second flexible spring 1323 and the mass 1322 is provided with a second protrusion 13231, the other of the second flexible spring 1323 and the mass 1322 is provided with a second groove 13223, and the second protrusion 13231 is disposed through the second groove 13223. Specifically, as shown in fig. 4, at least one of the first elastic component 131 and the second elastic component further includes a second flexible spring 1323, where the second flexible spring 1323 is disposed opposite to the first flexible spring 1321 along a left-right direction interval, the second flexible spring 1323 is disposed on a right side of the mass block 1322, and the second groove 13223 and the second protrusion 13231 may be disposed according to practical situations, for example: the second groove 13223 is provided on the left end surface of the second flexible spring 1323, the second protrusion 13231 is provided on the right end surface of the mass block 1322, or the second protrusion 13231 is provided on the left end surface of the second flexible spring 1323, and the second groove 13223 is provided on the right end surface of the mass block 1322, so that the mass block 1322 and the second flexible spring 1323 are assembled together by the cooperation of the first protrusion 13211 and the first groove 13222.
It is understood that the mass 1322, the first flexible spring 1321 and the second flexible spring 1323 are all injection molded from plastic resin, and the mass 1322, the first flexible spring 1321 and the second flexible spring 1323 may be integrally molded.
In some embodiments, each of the first and second flexible springs 1321, 1323 includes an annular body 14, a mounting portion 15 disposed within the chamber, a first connection portion 16 having flexibility, and a second connection portion.
The annular body 14 forms a closed loop chamber circumferentially around an axis of extension that passes through a center point of the chamber. Specifically, as shown in fig. 8, the ring-shaped body 14 is a flexible material, and the ring-shaped body 14 may be any of a circular ring shape, a polygonal shape, an elliptical shape, or the like, the ring-shaped body 14 having an outer peripheral surface and an inner peripheral surface in the inner-outer direction, and the center line of the chamber of the ring-shaped body 14 coinciding with the extension axis.
The mounting portion 15 is provided with a first hole 151 penetrating the mounting portion 15 in the extending axis direction. Specifically, as shown in fig. 8, the mounting portion 15 includes, but is not limited to, a rectangular block, a cylindrical block, an elliptic cylindrical block, a polygonal block, etc., the mounting portion 15 is provided in the chamber, and the outer circumferential surface of the mounting portion 15 and the inner circumferential surface of the ring-shaped body 14 are disposed at intervals in the inner and outer directions, a first hole 151 penetrating the mounting portion 15 in the left-right direction is provided in the mounting portion 15, the shaft 12 of the electric toothbrush 100 may penetrate the first hole 151 to rotate the mounting portion 15, preferably, the mounting portion 15 may be connected to the shaft 12 of the electric toothbrush 100 such that the mounting portion 15 is rotated by the rotating shaft 12 of the electric toothbrush 100.
The first connecting portion 16 has a first end operatively engaged with the inner peripheral surface of the ring-shaped body 14, and a second end operatively engaged with the outer peripheral surface of the mounting portion 15, the first connecting portion 16 extending in the radial direction of the extension axis. As shown in fig. 8, the first connecting portion 16 is provided between the mounting portion 15 and the ring-shaped body 14, one end of the first connecting portion 16 is connected to the inner peripheral surface of the ring-shaped body 14, and the other end of the first connecting portion 16 is connected to the outer peripheral surface of the mounting portion 15, whereby the mounting portion 15 and the ring-shaped body 14 are connected by the first connecting portion 16, the first connecting portion 16 is elongated and the first connecting portion 16 is a flexible material as seen in the direction of the extending axis, and the mounting portion 15 rotates relative to the ring-shaped body 14 by the first connecting portion 16.
The second connection portion includes a first segment 132111 integrally inserted into the annular body 14, and a second segment 132112 protruding from an end surface of the annular body 14, and the protruding direction extends along the extension axis. Specifically, as shown in fig. 8, a second connecting portion extending in the left-right direction is disposed on a side of the ring-shaped body 14 facing the mass block 1322, a first segment 132111 of the second connecting portion is disposed on the ring-shaped body 14, and a second segment 132112 of the second connecting portion is disposed at one end of the first segment 132111 and is disposed in the mass block 1322 in a penetrating manner, so that the second connecting portion is connected with the mass block 1322 of the electric toothbrush 100, and the mass block 1322 is driven to rotate by a flexible spring.
When the mounting portion 15 rotates, the first connecting portion 16 may elastically deform to drive the annular body 14 to rotate around the extension axis, or when the second connecting portion drives the annular body 14 to rotate, the first connecting portion 16 may elastically deform to drive the mounting portion 15 to rotate around the extension axis. Specifically, the first connection portion 16 is a main spring, the annular body 14 is an auxiliary spring, the first connection portion 16 and the annular body 14 together form a spring body, when the mounting portion 15 rotates along the extending axis circumferential direction R1, the annular body 14 deforms, the second stiffness of the first connection portion 16 and the first stiffness of the annular body 14 resist rotation of the mounting portion 15 along the R1 direction, or when the second connection portion 15 rotates along the extending axis circumferential direction R2, the annular body 14 deforms, the second stiffness of the first connection portion 16 and the first stiffness of the annular body 14 resist rotation of the second connection portion along the R2 direction, so that the mounting portion 15 resists rotation of the second connection portion along the R2 direction. Wherein the R1 direction and the R2 direction may be the same or opposite.
In some embodiments, the mass block 1322 is provided with a third connecting portion and a fourth connecting portion, where the third connecting portion and the fourth connecting portion are disposed at intervals along the circumferential direction of the extension axis, one of the second connecting portion and the third connecting portion of the first flexible spring 1321 is a first groove 13222, the other of the second connecting portion and the third connecting portion of the first flexible spring 1321 is a first protrusion 13211, and the first protrusion 13211 is disposed in the first groove 13222 in a penetrating manner, so that the first flexible spring 1321 is connected with the mass block 1322. One of the second connection portion and the fourth connection portion of the second flexible spring 1323 is a second groove 13223, the other of the second connection portion and the fourth connection portion of the second flexible spring 1323 is a second protrusion 13231, and the second protrusion 13231 is inserted into the second groove 13223, so that the second flexible spring 1323 is connected to the mass block 1322.
Specifically, the second connection portion of the first flexible spring 1321 may be the first protrusion 13211 of the above embodiment, the third connection portion may be the first groove 13222 of the above embodiment, or the second connection portion of the first flexible spring 1321 may be the first groove 13222 of the above embodiment, the third connection portion may be the first protrusion 13211 of the above embodiment, the second connection portion of the second flexible spring 1323 may be the second protrusion 13231 of the above embodiment, the fourth connection portion may be the second groove 13223 of the above embodiment, or the second connection portion of the second flexible spring 1323 may be the second groove 13223 of the above embodiment, the fourth connecting portion may be the second protrusion 13231 in the above embodiment, and the third connecting portion and the fourth connecting portion are alternately arranged along the circumferential direction of the mass block 1322, when the first flexible spring 1321 and the second flexible spring 1322 are mounted on the mass block 1322, a straight line between two second connecting portions of the first flexible spring 1321 is a first straight line, a straight line between two second connecting portions of the second flexible spring 1322 is a second straight line, and in a projection plane orthogonal to the left-right direction, the first straight line and the second straight line intersect to form an included angle, so that the stress of the mass block 5 is more balanced, and the stability of the rotation of the transmission assembly 12 is ensured.
In some embodiments, the line connecting the third connection of the mass 1322 to the center of the mass 1322 is a first straight line, the line connecting the fourth connection of the mass 1322 to the center of the mass 1322 is a second straight line, and the first and second straight lines intersect and are 90 ° as viewed from the direction of the extension axis. Therefore, a 90-degree phase difference exists between the first flexible spring 1321 and the second flexible spring 1322 when the first flexible spring 1321 and the second flexible spring 1322 rotate, so that the rotation stability of the transmission assembly 12 is further improved, and the first flexible spring 1321 and the second flexible spring 1322 are beneficial to generate resonance.
In some embodiments, first projection 13211 and second projection 13231 each include a first segment 132111 and a second segment 132112, the first segment 132111 being disposed on the annular body 14, the second segment 132112 being disposed at one end of the first segment 132111, the second segment 132112 being disposed within the first segment 132111, as viewed in the direction of the axis of extension (left to right or right to left). Specifically, as shown in fig. 8, the first segment 132111 is formed on the outer circumferential surface of the ring-shaped body 14, the second segment 132112 extends from left to right from the left end face of the first segment 132111, and the cross-sectional area of the second segment 132112 is smaller than that of the first segment 132111, so that the left end face of the first segment 132111 can be abutted against the right end face of the groove, thereby positioning the third connection portion and the second connection portion to the left and right, so that the first protrusion 13211 and the second protrusion 13231 are more reasonably arranged.
It is appreciated that the length of the second segment 132112 of the first flexible spring 1321 along the left-right direction is not greater than the depth of the first groove 13222, and the second segment 132112 of the first flexible spring 1321 and the first groove 13222 can be connected by interference fit, adhesion, clamping, or the like, the length of the second segment 132112 of the second flexible spring 1322 along the left-right direction is not greater than the depth of the second groove 13223, and the second segment 132112 of the second flexible spring 1322 and the second groove 13223 can be connected by interference fit, adhesion, clamping, or the like.
In some embodiments, the first connection portion 16 gradually expands in orientation having a component perpendicular to the extension line of the first connection portion 16 from the inner peripheral surface of the ring-shaped body 14 to the outer peripheral surface of the mounting portion 15, as seen in the direction of the extension axis. Specifically, as shown in fig. 8, the cross-sectional area of the first connecting portion 16 gradually decreases from outside to inside along the inside-outside direction, in other words, the cross-sectional area of the first connecting portion 16 connected with the mounting portion 15 is larger than the cross-sectional area of the first connecting portion 16 connected with the annular body 14, because the mounting portion 15 drives the annular body 14 to rotate through the first connecting portion 16, the cross-sectional area of the first connecting portion 16 connected with the mounting portion 15 is larger, the stability of the flexible spring is improved, the cross-sectional area of the first connecting portion 16 connected with the annular body 14 is smaller, the elastic deformation amount of the first connecting portion 16 is improved, and therefore the annular body 14 is driven to rotate around the circumferential direction of the annular body 14 through the first connecting portion 16.
In some embodiments, the first connecting portions 16 are a plurality of, and the plurality of first connecting portions 16 are disposed at intervals along the circumference of the extension axis. Specifically, as shown in fig. 6 and 8, the number of the first connecting portions 16 may be two or more, for example, two first connecting portions 16 (two as shown in fig. 8) in the embodiment of the present utility model are provided, and the two first connecting portions 16 are disposed at equal intervals along the circumferential direction of the annular body 14, so that the first flexible springs 1321 and the second flexible springs 1322 are disposed more reasonably, and the stability of the first flexible springs 1321 and the second flexible springs 1322 is improved.
In some embodiments, the plurality of second connecting portions are arranged at intervals along the circumference of the extension axis. Specifically, as shown in fig. 6 and 8, the number of the second connection portions may be two or more, for example, two second connection portions (two as shown in fig. 8) are provided in the embodiment of the present utility model, and the two second connection portions are disposed at equal intervals along the circumferential direction of the ring-shaped body 14, and the distances between the center lines of the two second connection portions and the center line of the mounting portion 15 are equal, so that the stability of the rotation of the mass block 1322 is improved.
In some embodiments, the connection point of the other end of the first connection portion 16 with the annular body 14 is spaced circumferentially from the second connection portion at the axis of extension. Specifically, as shown in fig. 8, the connection point of the other end of the first connection portion 16 with the annular body 14 is offset from the second connection portion in the circumferential direction of the annular body 14. Thereby, the rotational force on the mounting portion 15 is transmitted to the ring body 14 through the first connecting portion 16, and then transmitted to the second connecting portion through the ring body 14, so that the rotational displacement of the second connecting portion is improved through the deformation of the second connecting portion, and the rotational displacement of the mass block 1322 is further improved.
Preferably, the other ends of the first connecting portions 16 are alternately arranged at equal intervals on the ring-shaped body 14 with the connecting points of the ring-shaped body 14 and the second connecting portions, in other words, the plurality of first connecting portions 16 are arranged at equal intervals in the circumferential direction of the extension axis and the plurality of second connecting portions are arranged at equal intervals in the circumferential direction of the extension axis, and the first connecting portions 16 are provided between two adjacent first connecting portions 16, whereby the stability of the rotation of the mass block 1322 is further improved.
In some embodiments, the mass 1322 is provided with a second hole 13221 penetrating the mass 1322 along the extending axis direction, the shaft 12 is penetrated in the second hole 13221, and the outer peripheral surface of the shaft 12 and the inner peripheral surface of the second hole 13221 are disposed at intervals. Specifically, as shown in fig. 7, the mass block 1322 is provided with a second hole 13221 penetrating the mass block 1322 in the left-right direction, the shaft 12 may be inserted into the second hole 13221, and the outer circumferential surface of the shaft 12 and the inner circumferential surface of the second hole 13221 are disposed at intervals in the inner-outer direction, so that the shaft 12 and the mass block 1322 do not affect each other.
In some embodiments, the mounting portion 15 is provided with a first hole 151 penetrating the mounting portion 15 along the extending axis direction, and the shaft 12 is penetrated in the first hole 151, so that the shaft 12 drives the first hole 151 to rotate. Specifically, as shown in fig. 8, the mounting portion 15 is provided with a first hole 151 penetrating the mounting portion 15 in the left-right direction, and the shaft 12 of the electric toothbrush 100 may pass through the first hole 151 to rotate the mounting portion 15.
It will be appreciated that the first hole 151 may be a shaped hole, and the opposite hole includes, but is not limited to, an oval shape, a polygonal shape, etc., and the outer circumferential surface of the shaft 12 is provided with a shaped surface that mates with the opposite hole, so that the shaft 12 mates with the first hole 151, so that the shaft 12 drives the mounting portion 15 to rotate, or the first hole 151 mates with the shaft 12 in an interference fit, or through a fastener, etc.
In some embodiments, the first hole 151 includes a straight section 1511 and an arcuate section 1512 as viewed from the extension axis, one end of the straight section 1511 is connected to one end of the arcuate section 1512, the other end of the straight section 1511 is connected to the other end of the arcuate section 1512, and the arcuate section 1512 has a circular arc length greater than one-half of the same circle. Specifically, as shown in fig. 8, one end of the straight section 1511 is connected with one end of the arc-shaped section 1512, and the other end of the straight section 1511 is connected with the other end of the arc-shaped section 1512, so that a semicircular hole is formed in a projection plane orthogonal to the left-right direction of the first hole 151, a matching portion which is matched with the first hole 151 and has a semicircular cross section is arranged on the shaft 12, the matching portion of the shaft 12 is arranged in the first hole 151 in a penetrating manner, so that the shaft 12 drives the mounting portion 15 to rotate, in addition, the arc length of the arc-shaped section 1512 is greater than one half of the same circle, the cross section of the matching portion of the shaft 12 can not be too small, the rigidity of the shaft 12 is guaranteed, and the service life of the shaft 12 is prolonged.
In some embodiments, the support bracket 11 includes a body 111, a first clamping portion 112, and a second clamping portion 113.
The body 111 is provided in the housing 4, and the shaft 12 of the drive assembly 1 is rotatably provided in the body 111. Specifically, as shown in fig. 9, the body 111 may be a cylinder, a diamond column, an oval column, a polygonal column, etc., and the cavity 115 is formed on the body 111.
The first clamping portion 112 and the second clamping portion 113 are arranged opposite to each other along the inner-outer direction at intervals, and the first clamping portion 112 and the second clamping portion 113 are used for being matched with the clamping of the shell 4 of the electric toothbrush 100. Specifically, as shown in fig. 9, the first clamping portion 112 and the second clamping portion 113 are disposed on the outer peripheral side of the body 111 along the radial interval of the body 111, the first clamping portion 112 and the second clamping portion 113 are elastic plates, a first protruding portion is disposed on one side of the elastic plates away from the body 111, and a second protruding portion is disposed on the inner peripheral surface of the housing 4, so that the support frame 11 is fixed in the housing 4 through the engagement of the first protruding portion and the second protruding portion and the inner peripheral surface of the housing 4.
It is to be understood that the number of the first clamping portion 112 and the second clamping portion 113 is not limited in the present utility model, for example: the first clamping portions 112 and the second clamping portions 113 are multiple, and the first clamping portions 112 and the second clamping portions 113 are arranged at intervals along the circumferential direction of the body 111.
In some embodiments, the supporting frame 11 further includes a protruding portion 114, where the protruding portion 114 is disposed on the outer peripheral side of the body 111 and located between the first clamping portion 112 and the second clamping portion 113, and the protruding portion 114 is used to connect with the housing 4. Specifically, as shown in fig. 9, the protruding portion 114 extends outward in the inner and outer directions from the outer peripheral side of the body 111, the protruding portion 114 may be cylindrical and provided between the first and second engaging portions 112 and 113, and the inner peripheral surface of the protruding portion 114 is provided with threads, whereby the supporting frame 11 is further fixed in the housing 4 by the fastener through the threaded engagement of the fastener with the inner peripheral surface of the protruding portion 114 through the housing 4.
In some embodiments, the electric machine 2 includes a stator assembly and a rotor assembly having at least one coil 21.
The stator assembly is arranged in the housing, and further comprises a stator core, wherein the stator core is provided with a first stator core 22 and a second stator core 23 which extend along the extending axis direction and are oppositely arranged along the radial direction of the extending axis at intervals, and a third core which is arranged at an included angle with the extending axis, and at least one coil 21 is arranged on the third core around the outer side of the third core. Specifically, as shown in fig. 2 to 4, the third iron core extends in the up-down direction and is fixed in the housing, the first stator iron core 22 and the second stator iron core 23 each extend in the left-right direction, and the right end of the first stator iron core 22 and the right end of the second stator iron core 23 each are connected to the third iron core, and the first stator iron core 22 is located above the third iron core, the second stator iron core 23 is located below the third iron core, and the coil is wound around the outer peripheral side of the third iron core.
The rotor assembly is arranged in the shell, the rotor assembly comprises a first magnet assembly 26, a second magnet assembly 27 and a rotor bracket 25 which at least partially stretches into a space between the first stator iron core 22 and the second stator iron core 23, the outer peripheral surfaces of the rotor bracket 25 are respectively arranged with the inner peripheral surfaces of the first stator iron core 22 and the second stator iron core 23 along the radial direction of the extension axis at intervals, the first magnet assembly 26 and the second magnet assembly 27 are oppositely arranged on the rotor bracket 25 along the radial direction of the extension axis at intervals, at least part of the first stator iron core 22 and the first magnet assembly 26 form an air gap between the end surfaces close to each other, and at least part of the second stator iron core 23 and the second magnet assembly 27 form an air gap between the end surfaces close to each other. Specifically, as shown in fig. 2 to 4, the stator bracket 25 is cylindrical and rotatably installed between the left end portion of the first stator core 22 and the left end portion of the second stator core 23, and the rotor bracket 25 may be rotated at a certain angle, and the left ends of the first stator core 22 and the second stator core 23 are spaced apart from the outer circumferential surface of the rotor bracket 25 in the inner and outer directions to form an air gap, thereby preventing the rotor bracket 25 from being bumped with the first stator core 22 and the second stator core 23 when rotating, and thus improving the service lives of the rotor bracket 25, the first stator core 22 and the second stator core 23.
The first magnet assembly 26 and the second magnet assembly 27 each include a first magnetization region 261 and a second magnetization region 262 having opposite magnetic poles, and the first magnetization region 261 of the first magnet assembly 26 and the first magnetization region 262 of the second magnet assembly 27 are disposed adjacent to each other at a distance from each other, and the second magnetization region 261 of the first magnet assembly 26 and the second magnetization region 262 of the second magnet assembly 27 are disposed adjacent to each other at a distance from each other, as viewed in the direction of the axis 5. Specifically, as shown in fig. 7 to 8, the upper end and the lower end of the rotor bracket 25 are each provided with a third groove 253, the first magnet assembly 26 is provided in the third groove 253 at the upper end of the rotor bracket 25, the second magnet assembly 27 is provided in the third groove 253 at the lower end of the rotor bracket 25, the outer circumferential surface of the first magnet assembly 26 is provided opposite to the inner circumferential surface of the first stator core 22 in the up-down direction at a spacing, the outer circumferential surface of the second magnet assembly 27 is provided opposite to the inner circumferential surface of the second stator core 23 in the up-down direction, the first magnet assembly 26 and the second magnet assembly 27 each include a first magnetization region 261 and a second magnetization region 262 having opposite magnetic poles, for example, the first magnetization region 261 is N-pole, the second magnetization region 262 is S-pole, or, in other words, the first magnetization region 261 is S-pole, the second magnetization region 262 is N-pole, and the first magnet assembly 26 and the second magnet assembly 27 each include at least two permanent magnets are provided opposite magnetic poles in the third groove 253 and on the side facing away from the third groove 253. The first magnetization region of the first magnet assembly 26 and the first magnetization region of the second magnet assembly 27 are disposed opposite to each other at an interval in the inner-outer direction, and the second magnetization region of the first magnet assembly 26 and the second magnetization region of the second magnet assembly 27 are disposed opposite to each other at an interval in the inner-outer direction. Therefore, when the coil 21 is electrified, the first stator iron core 22 and the second stator iron core 23 generate opposite magnetic poles, and the first magnetization area and the second magnetization area are driven to drive the rotor bracket 25 to rotate reciprocally around the shaft and have a certain swing angle.
The first magnet assembly 26 and the second magnet assembly 27 have uniform thickness in the inner and outer directions, and the rotor bracket 25 is connected to the first elastic assembly 131 such that the rotor bracket 25 drives the first elastic assembly 131 to rotate. Specifically, as shown in fig. 2-5, the first magnet assembly 26 is disposed on the upper end surface of the rotor support 25 and is spaced from the left end of the first stator core 22 along the inner and outer directions, the second magnet assembly 27 is disposed on the lower end surface of the rotor support 25 and is spaced from the left end of the second stator core 23 along the inner and outer directions, so, when the coil 21 is energized, the rotor support 25 is driven to rotate reciprocally at a certain angle by the first stator core 22 and the second stator core 23, the rotor support 15 is connected with the mass block 1322 driving the second elastic assembly 132, so that the rotor support 25 drives the mass block 1322 of the second elastic assembly 132 to rotate, the mass block 1322 driving the first flexible spring 1321 of the second elastic assembly 132 and the second flexible spring 1323 of the second elastic assembly 132 to rotate, and then the driving shaft 12 rotates, and finally the first flexible spring 1321 and the second flexible spring 1323 of the first elastic assembly 131 drive the mass block 1322 of the first elastic assembly 131 to rotate. In addition, the thicknesses of the first magnet assembly 26 and the second magnet assembly 27 in the inner and outer directions are uniform, thereby reducing and eliminating unnecessary single-sided magnetic pulling force, and further improving vibration and noise of the motor 2 as a whole.
In some embodiments, the motor 2 further includes a mounting bracket 28, the mounting bracket 28 is disposed within the housing 4, the mounting bracket 28 is located between the third core and the rotor support 25, the first stator core 22 and the second stator core 23 are threaded on the mounting bracket 28 such that the mounting bracket 28 supports the first stator core 22 and the second stator core 23, and the rotor support 25 is rotatably connected to the mounting bracket 28 such that the mounting bracket 28 supports the rotor support 25. Specifically, as shown in fig. 2 to 4, the mounting bracket 28 is located between the right side of the rotor bracket 25 and the left side of the third core, and the mounting bracket 28 is disposed at intervals in the left-right direction with the rotor bracket 25 and the third core, respectively, and the first stator core 22 and the second stator core 23 are pierced on the mounting bracket 28, the rotor bracket 25 is provided with a fifth hole 251 penetrating the rotor bracket 25, the shaft 12 is rotatably pierced on the mounting bracket 28 through the rotor bracket 25, and the outer circumferential surface of the shaft 12 is disposed at intervals in the inner-outer direction with the inner circumferential surface of the fifth hole 251, thereby providing a mounting basis through the mounting bracket 28, the first stator core 22, the second stator core 23 and the rotor bracket 25.
In some embodiments, the electric toothbrush 100 further includes an output support 29, the output support 29, two ends of the output support 29 are respectively connected to the toothbrush assembly 3 and the mass block 1322 of the first elastic assembly 131 of the driving assembly 1, and the rotor support 25 is connected to the mass block 1322 of the second elastic assembly 132 of the driving assembly 1, so that when the mass block 1322 of the first elastic assembly 131 is excited to rotate by the motor 2 of the rotor support 25, the mass block 1322 of the first elastic assembly 131 drives the shaft 12 to rotate, and the shaft 12 drives the mass block 1322 of the second elastic assembly 132 to rotate, thereby driving the output support 29 to rotate. Therefore, the rotor bracket 25 drives the mass block 1322 of the second elastic component 132 to rotate, and can also be suspended between the first stator core 22 and the second stator core 23 through the rotor bracket 25.
The mass block 1322 of the driving assembly 1 is further provided with a third hole 13224 penetrating the mass block 1322 along the extending axis, one side of the output bracket 29 facing the first elastic assembly 131 of the driving assembly 1 is provided with a third protrusion 292 penetrating the third hole 13224, the third protrusion 292 penetrates the third hole 13224 of the mass block 1322 of the first elastic assembly 131 of the driving assembly 1, one side of the rotor bracket 25 facing the second elastic assembly 132 of the driving assembly 1 is provided with a fourth protrusion 252 penetrating the third hole 13224, and the fourth protrusion 252 penetrates the third hole 13224 of the mass block 1322 of the second elastic assembly 132 of the driving assembly 1. Specifically, as shown in fig. 2-4, 10 and 11, the left end surface of the rotor bracket 25 is provided with two fourth protrusions 252, the mass block 1322 is provided with a third hole 13224, the two fourth protrusions 252 penetrate through the chambers of the second flexible spring 1323 of the first elastic component 131 and are respectively penetrated in the third holes 13224, the output bracket 29 comprises a first connecting plate 291 and two third protrusions 292, the toothbrush component 3 penetrates through the first connecting plate 291 and rotates along with the first connecting plate 291, the two third protrusions 292 are arranged on the right end surface of the first connecting plate 291, the two third protrusions 292 are arranged at intervals along the inner and outer directions, and the two third protrusions 292 penetrate through the chambers of the first flexible spring 1321 of the second elastic component 132 and are respectively penetrated in the two third holes 13224, so that the second elastic component 132 transmits resonance energy generated by the driving component 1 to the toothbrush component 3 through the output bracket 29.
In some embodiments, as shown in fig. 2, the electric toothbrush 100 further includes a battery 5, the battery 5 being disposed within the housing 4 and on the right side of the motor 2, the battery 5 being electrically connected to the motor 2 such that the battery 5 powers the motor 2.
It is understood that the battery 5 includes, but is not limited to, a dry cell, a storage battery, etc., and that the resonance frequency of about 260hz is achieved by adjusting the frequency of the motor 2 (the frequency is about 260 hz), the weight of the mass, the stiffness of the spring.
In the description of the present utility model, 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 utility model 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 utility model.
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 utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present utility model, 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 utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present utility model, 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.
In the present disclosure, the terms "one embodiment," "some embodiments," "examples," "specific examples," 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 present disclosure. 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 various embodiments or examples described in this specification and the features of the various embodiments or examples may be combined and combined by those skilled in the art without conflict.
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 utility model, 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 utility model.

Claims (18)

1. A drive assembly, comprising: the support frame is provided with a cavity; a shaft having a first stiffness, the shaft comprising a central node and an extension axis, a first section in which the central node is located being disposed through the cavity; the elastic assemblies are arranged on two sides of a central node of the shaft at intervals along the extending axis, each elastic assembly comprises a first flexible spring and a mass block, one of the first flexible spring and the mass block is provided with a first bulge, the other of the first flexible spring and the mass block is provided with a first groove, and the first bulge is arranged in the first groove in a penetrating mode; when one of the elastic components is excited to rotate, the shaft drives the other elastic components to rotate in opposite directions, and torque generated by rotation of the spring components on two sides of the center node is basically counteracted at the center node.
2. The drive assembly of claim 1, wherein the plurality of elastic assemblies comprises a first elastic assembly and a second elastic assembly, the first elastic assembly being equidistant from the center node and the second elastic assembly being equidistant from the center node.
3. The drive assembly of claim 1, wherein each of the resilient assemblies further comprises a second flexible spring, the second flexible springs and the second flexible springs being disposed in spaced opposition along the extension axis, the mass being disposed between the first flexible springs and the second flexible springs, one of the second flexible springs and the mass being provided with a second protrusion, the other of the second flexible springs and the mass being provided with a second recess, the second protrusion being disposed through the second recess.
4. The drive assembly of claim 3, wherein each of the first and second flexible springs comprises:
an annular body surrounding in a circumferential direction of the extension axis to form a closed-loop chamber, the extension 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 extending 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 extension axis; the method comprises the steps of,
the second connecting part comprises a first section integrally penetrating with the annular body and a second section protruding from the end face of the annular body, and the protruding direction extends along the extending axis;
when the installation part rotates, the first connecting part can generate elastic deformation to drive the annular body to rotate around the extension 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 extension axis.
5. The drive assembly of claim 4, 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 extension 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.
6. The drive assembly of claim 5, wherein a line connecting the third connecting portion of the mass and a center of the mass as seen in a direction of the extension axis is a first straight line, a line connecting the fourth connecting portion of the mass and a center of the mass is a second straight line, and the first straight line and the second straight line intersect and are 90 °.
7. The drive assembly of claim 5, wherein the first projection and the second projection each comprise a first segment and a second segment, the first segment being disposed on the annular body, the second segment being disposed at one end of the first segment, the second segment being located within the first segment as viewed in the direction of the extension axis.
8. The drive assembly according to claim 4, wherein the first connecting portion has an orientation gradually expanding from an inner peripheral surface of the annular body to an outer peripheral surface of the mounting portion, as viewed in a section where an extension axis of the first connecting portion is located, with a perpendicular component to an extension line of the first connecting portion.
9. The drive assembly of claim 4, wherein the first connection portions are a plurality of and the first connection portions are circumferentially spaced along the extension axis and/or the second connection portions are a plurality of and the second connection portions are circumferentially spaced along the extension axis.
10. The drive assembly of claim 4, wherein a connection point of the other end of the first connection portion with the annular body is disposed at a circumferential interval of the extension axis from the second connection portion.
11. The drive assembly of claim 4, wherein the first bore comprises a straight section and an arcuate section as viewed from the extension axis, one end of the straight section being connected to one end of the arcuate section, the other end of the straight section being connected to the other end of the arcuate section, the arcuate section having a circular arc length greater than one-half of the same circle or the first bore having a circular peripheral contour.
12. The drive assembly of any one of claims 1-11, wherein the support bracket comprises:
the first section of the shaft is rotatably arranged in a cavity of the body in a penetrating manner;
The first clamping part and the second clamping part are oppositely arranged along the radial interval of the extension axis in the inner and outer directions, and the first clamping part and the second clamping part are suitable for being matched with the clamping of the shell of the electric toothbrush.
13. An electric toothbrush, comprising:
a housing for holding;
a driving assembly provided in the housing, the driving assembly being as set forth in any one of claims 1 to 12, a support frame of the driving assembly being supported in the housing, outer peripheral surfaces of a plurality of elastic assemblies of the driving assembly and an inner peripheral surface of the housing being disposed at intervals in an inner-outer direction;
the motor is arranged in the shell and is connected with one part of elastic components of the elastic components; and
a toothbrush assembly connected to another part of the plurality of elastic assemblies;
the motor is excited to drive one part of the elastic components to rotate, the first elastic component drives the shaft of the driving component to drive the other part of the elastic components to rotate, so that one part of the elastic components and the other part of the elastic components resonate, and the other part of the elastic components drives the toothbrush component to vibrate.
14. The electric toothbrush of claim 13, wherein the motor comprises:
a stator assembly having at least one coil, the stator assembly being provided within the housing, the stator assembly further comprising a stator core having first and second stator cores extending in the direction of the extension axis and disposed in opposition at intervals in a radial direction of the extension axis, and a third core disposed at an angle to the extension axis, the at least one coil being disposed on the third core around an outside of the third core; and
the rotor assembly is arranged in the shell and comprises a first magnet assembly, a second magnet assembly and a rotor bracket which at least partially stretches into the space between the first stator iron core and the second stator iron core, wherein the outer circumferential surfaces of the rotor bracket are respectively arranged at intervals with the inner circumferential surfaces of the first stator iron core and the second stator iron core along the radial direction of the extension axis, the first magnet assembly and the second magnet assembly are oppositely arranged on the rotor bracket along the radial interval of the extension axis, at least part of the first stator iron core and the first magnet assembly form an air gap between the end surfaces close to each other, and at least part of the second stator iron core and the second magnet assembly form an air gap between the end surfaces close 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 extending axis 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.
15. The electric toothbrush of claim 14, wherein the motor further comprises a mounting bracket mounted within the housing, the mounting bracket being located between the third core and the rotor support, the first stator core and the second stator core being threaded on the mounting bracket.
16. The electric toothbrush according to claim 14 further comprising an output carrier, each end of the output carrier being connected to the mass of one of the brush assembly and the drive assembly, the rotor carrier being connected to the mass of the other of the drive assembly such that when the mass of one of the spring assemblies is energized by the motor of the rotor carrier, the mass of the one of the spring assemblies rotates the shaft, which rotates the mass of the other of the spring assemblies, thereby rotating the output carrier.
17. The electric toothbrush according to claim 16, wherein the mass of the drive assembly is further provided with a third hole penetrating the mass along the extension axis, a third protrusion penetrating the third hole is provided on a side of the output support, which faces one of the elastic assemblies, of the drive assembly, the third protrusion penetrating the third hole of the mass of one of the elastic assemblies of the drive assembly, a fourth protrusion penetrating the fourth hole is provided on a side of the rotor support, which faces the other elastic assembly of the drive assembly, of the mass of the other elastic assembly of the drive assembly, and the fourth protrusion penetrates the third hole of the mass of the other elastic assembly of the drive assembly.
18. The electric toothbrush according to any one of claims 13 to 17, wherein the supporting frame of the driving assembly further comprises a protruding portion provided on an outer peripheral side of the supporting frame, the protruding portion being connected to an inner peripheral surface of the electric toothbrush.
CN202223613437.1U 2022-12-30 2022-12-30 Driving assembly and electric toothbrush Active CN219351501U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202223613437.1U CN219351501U (en) 2022-12-30 2022-12-30 Driving assembly and electric toothbrush

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202223613437.1U CN219351501U (en) 2022-12-30 2022-12-30 Driving assembly and electric toothbrush

Publications (1)

Publication Number Publication Date
CN219351501U true CN219351501U (en) 2023-07-14

Family

ID=87097682

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202223613437.1U Active CN219351501U (en) 2022-12-30 2022-12-30 Driving assembly and electric toothbrush

Country Status (1)

Country Link
CN (1) CN219351501U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024139681A1 (en) * 2022-12-30 2024-07-04 深圳素士科技股份有限公司 Elastic member and resonance assembly

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024139681A1 (en) * 2022-12-30 2024-07-04 深圳素士科技股份有限公司 Elastic member and resonance assembly

Similar Documents

Publication Publication Date Title
CN219351501U (en) Driving assembly and electric toothbrush
CN219287352U (en) Motor and electric toothbrush
CN219247617U (en) Resonance device and electric toothbrush
CN219345348U (en) Flexible spring and transmission assembly
CN219499131U (en) Resonance system and electric toothbrush
CN207021878U (en) Toothbrush motor
CN117439363A (en) Vibrating motor and electric toothbrush
CN219184248U (en) Elastic device
CN110266170B (en) Vibration motor of electric toothbrush
CN108173404B (en) Ultrasonic vibration motor
WO2021129088A1 (en) Motor support for mounting permanent magnet and coil, magnetic suspension sonic motor, and oral cavity cleaning appliance
WO2024140837A1 (en) Resonance module
CN212162943U (en) Motor and stator core thereof
CN213402583U (en) Permanent magnet motor
CN118282110A (en) Support assembly and electric toothbrush
CN211127518U (en) Motor bracket for mounting permanent magnet and coil, magnetic suspension sound wave motor and oral cavity cleaning appliance
CN216490171U (en) Telescopic swing motor
CN213585535U (en) Reluctance motor and electric toothbrush
CN214959221U (en) Magnetic suspension electric toothbrush vibrating motor
CN214380586U (en) Vibration motor and electrical appliance comprising same
CN215871130U (en) Motor for electric toothbrush and electric toothbrush with motor
CN219322161U (en) Motor
CN217469724U (en) Miniature brushless motor device
CN215186391U (en) AC brushless vibration micromotor and electric toothbrush
CN210839090U (en) Permanent magnet vibration motor

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant