CN219499131U - Resonance system and electric toothbrush - Google Patents
Resonance system and electric toothbrush Download PDFInfo
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- CN219499131U CN219499131U CN202320753707.4U CN202320753707U CN219499131U CN 219499131 U CN219499131 U CN 219499131U CN 202320753707 U CN202320753707 U CN 202320753707U CN 219499131 U CN219499131 U CN 219499131U
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Abstract
The utility model discloses a resonance system and an electric toothbrush, wherein the resonance system comprises an elastic component, an output component and a mass block, the elastic component comprises a steel shaft, an axis, a connecting cylinder with flexibility, a first elastic unit and a second elastic unit, the connecting cylinder and the steel shaft extend along the axial direction of the axis, the first elastic unit and the second elastic unit are arranged at intervals along the axial direction of the axis and are integrally formed with the connecting cylinder, the steel shaft is arranged in the connecting cylinder in a penetrating manner, and protruding parts are arranged on the first elastic unit and the second elastic unit. The resonance system has the advantages of simple structure, low cost and the like.
Description
Technical Field
The present utility model relates to personal care appliances, and in particular to a resonant system 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 resonant structure of the electric toothbrush is unreasonable to set up, and the service life is short.
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 patent number CN 113543748A-flexible spring and motor assembly, when the rotating member is connected by the shaft, since the first plurality of flexible springs and the second plurality of flexible springs are suspended in the housing by the torsion bar, and the torsion bar is arranged to be flexible or twisted in the first rotation direction RD1 and the second rotation direction RD2, the torsion bar is caused to bend during use by the gravity of the first plurality of flexible springs and the second plurality of flexible springs, resulting in a reduction in the service life of the torsion bar.
The present utility model aims to solve at least one of the technical problems in the related art to some extent.
Therefore, the embodiment of the utility model provides a resonance system with simple structure and long service life.
The embodiment of the utility model provides an electric toothbrush with low cost and reasonable resonant structure.
The resonance system according to an embodiment of the present utility model includes: the elastic assembly comprises a steel shaft, an axis, a connecting cylinder with flexibility, a first elastic unit and a second elastic unit, wherein the connecting cylinder and the steel shaft extend along the axial direction of the axis, the first elastic unit and the second elastic unit are arranged at intervals along the axial direction of the axis and are integrally formed with the connecting cylinder, the steel shaft is arranged in the connecting cylinder in a penetrating manner, and protruding parts are arranged on the first elastic unit and the second elastic unit; the output assembly is arranged on one side of the elastic assembly, the output assembly and the elastic assembly are arranged at intervals along the axial direction of the axis, the output assembly comprises an output shaft, a mounting frame and a bearing, the mounting frame is provided with a first through hole penetrating through the mounting frame along the axial direction of the axis, the bearing is arranged in the first through hole, and at least part of the output shaft is rotatably supported in the first through hole through the bearing; the mass block is arranged between the elastic component and the output component, the elastic component, the mass block and the output component are sequentially arranged at intervals along the axial direction of the axis, the mass block is connected with the output shaft, one side of the mass block, which faces the elastic component, is provided with a plug-in connection part, the plug-in connection part is provided with a plug-in connection groove extending along the axial direction of the axis, and the protruding part can be inserted into the plug-in connection groove; when one of the first elastic unit and the second elastic unit is excited to rotate, the other of the first elastic unit and the second elastic unit is driven to rotate in an opposite direction through the steel shaft, so that resonance is generated between the first elastic unit and the second elastic unit, and resonance energy is transmitted to the output shaft through the mass block.
According to the resonance system provided by the embodiment of the utility model, the steel shaft, the first elastic unit and the second elastic unit are arranged, so that the rigidity of the steel shaft is relatively high and the steel shaft is not easy to bend relative to the rigidity of the steel shaft in the related art, the bending strength of the steel shaft is improved, and the service life of the elastic assembly is prolonged.
In some embodiments, at least one of the first elastic unit and the second elastic unit comprises: the annular body surrounds the axis to form a closed-loop cavity along the circumferential direction of the axis, the protruding part is in operative engagement with the annular body, one end of the connecting cylinder penetrates through the annular body, and the outer circumferential surface of the connecting cylinder and the inner circumferential surface of the annular body are arranged at intervals along the radial direction of the axis; the flexible first plate, the one end of first plate the inner peripheral face of annular body links to each other, the other end of first plate with the connecting cylinder links to each other, the first plate is in the radial direction of axis extends, the first plate with the bulge is followed the circumference interval setting of axis when the connecting cylinder rotates, the first plate with the annular body can produce elastic deformation and resist the connecting cylinder rotates, or when the bulge drives the annular body rotates, the first plate can produce elastic deformation in order to resist the annular body rotates.
In some embodiments, at least one of the first elastic unit and the second elastic unit further includes a second plate disposed in the chamber, one end of the second plate is connected to the inner circumferential surface of the annular body, the protruding portion is disposed at the other end of the second plate, and an outer circumferential surface of the protruding portion and an outer circumferential surface of the connecting cylinder are disposed at a radial interval along the axis.
In some embodiments, the cross-sectional area of the first plate decreases gradually in a direction away from the connecting cylinder, and the cross-sectional area of the second plate decreases gradually in a direction away from the connecting cylinder, as seen in an axial direction of the axis.
In some embodiments, the first plates are a plurality of first plates spaced circumferentially along the axis; and/or the second plates are a plurality of, the second plates are arranged at intervals along the circumferential direction of the axis, and at least one first plate is arranged between two adjacent second plates.
In some embodiments, the number of the first plates and the number of the second plates are equal, and the first plates and the second plates are arranged at equal intervals along the circumferential direction of the axis
In some embodiments, at least part of the first plate of the second elastic unit is located within a projection of the first elastic unit, seen in an axial direction of the axis.
In some embodiments, the outer circumferential profile of the annular body is circular, elliptical or polygonal, as seen in the axial direction of the axis.
In some embodiments, the outer circumferential profile of the protrusion is circular, the inner circumferential profile of the socket groove is circular arc, the diameter of the socket groove is equal to the diameter of the protrusion, and the corresponding circumferential angle of the inner circumferential profile of the socket groove is greater than 180 ° as viewed in the axial direction of the axis.
An electric toothbrush according to an embodiment of the present utility model includes: a housing; a resonance system provided in the housing, the resonance system being any one of the above embodiments, the output assembly of the elastic assembly being provided in the housing, an outer peripheral surface of the elastic assembly of the resonance system and an inner peripheral surface of the housing being disposed at a radial interval along an axial direction of an axis of the resonance system; the motor component is arranged in the shell and is connected with the elastic component; the motor assembly is excited to drive one of the first elastic unit and the second elastic unit of the elastic assembly to rotate, one of the first elastic unit and the second elastic unit of the elastic assembly drives the steel shaft of the resonance system to rotate so as to drive the other one of the first elastic unit and the second elastic unit of the elastic assembly to rotate, so that one of the first elastic unit and the second elastic unit of the elastic assembly rotates and the other one of the first elastic unit and the second elastic unit of the elastic assembly resonates, and the elastic assembly drives the brush head assembly to vibrate.
Drawings
Fig. 1 is a schematic structural diagram of a resonance system according to an embodiment of the present utility model.
Fig. 2 is an exploded schematic view of a resonance system of an embodiment of the present utility model.
Fig. 3 is a cross-sectional view of a resonant system of an embodiment of the present utility model.
Fig. 4 is an assembly view of a first elastic unit and a mass of the resonant system of the present utility model.
A resonance system 100;
an axis 1;
an elastic component 2; a steel shaft 21; a first elastic unit 22; an annular body 221; a first plate 223; a projection 224; a second plate 225; a second elastic unit 23;
an output assembly 3; an output shaft 31; a mounting frame 32; a bearing 33;
a mass 4; a plug-in portion 41; a connecting cylinder 5; a motor assembly 6; a housing 7.
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. 1-4, an electric toothbrush according to an embodiment of the present utility model includes a housing 7, a resonant system 100 disposed within the housing 7, and a motor assembly 6 disposed within the housing 7.
The resonance system 100 includes an elastic member 2, an output member 3 provided at one side of the elastic member 2, and a mass 4 provided between the elastic member 2 and the output member 3.
The elastic assembly 2 comprises a steel shaft 21, a first elastic unit 22, a second elastic unit 23, a flexible connecting cylinder 5 and an axis 1, wherein the connecting cylinder 5 and the steel shaft 21 extend along the axial direction of the axis 1 (the left-right direction as shown in fig. 1), the first elastic unit 22 and the second elastic unit 23 are arranged at intervals along the axial direction of the axis 1 and are integrally formed with the connecting cylinder 5, the steel shaft 21 is arranged in the connecting cylinder 5 in a penetrating mode, and protruding portions 224 are arranged on the first elastic unit 22 and the second elastic unit 23.
Specifically, as shown in fig. 1-4, the connecting cylinder 5, the steel shaft 21 and the axis 1 all extend along the left-right direction, the first elastic unit 22 and the second elastic unit 23 are all arranged on the steel shaft 21 in a penetrating manner and are arranged at intervals along the left-right direction, the connecting cylinder 5 is provided with a mounting cavity penetrating the connecting cylinder 5 along the left-right direction, the left end of the connecting cylinder 5 is connected with the right end face of the inner ring of the first elastic unit 22 and is integrally formed, the right end of the connecting cylinder 5 is connected with the right end face of the inner ring of the second elastic unit 23 and is integrally formed, therefore, the first elastic unit 22, the connecting cylinder 5 and the second elastic unit 23 form an organic whole, the steel shaft 21 is penetrated in the mounting cavity of the connecting cylinder 5, the torsion capability between the first elastic unit 22 and the second elastic unit 23 can be improved through the connecting cylinder 5, the arrangement of the elastic assembly 2 is more reasonable, the connecting cylinder 5 is integrally formed with the first elastic unit 22 and the second elastic unit 23 respectively, the first elastic unit 22, the second elastic unit 23 and the connecting cylinder 5 can be directly manufactured by using the bending die for manufacturing the first elastic unit 22 and the second elastic unit 23, and the processing cost of the connecting cylinder 2 is reduced, and the processing resistance of the elastic assembly 2 is reduced. The first elastic unit 22 and the second elastic unit 23 are respectively provided with a convex part 224, the convex part 224 on the first elastic unit 22 is integrally formed with the first elastic unit 22, and the convex part 224 on the second elastic unit 23 is integrally formed with the first elastic unit 22.
The output assembly 3 and the elastic assembly 2 are arranged at intervals along the axial direction of the axis 1, the output assembly 3 comprises an output shaft 31, a mounting frame 32 and a bearing 33, the mounting frame 32 is provided with a first through hole penetrating through the mounting frame 32 along the axial direction of the axis 1, the bearing 33 is arranged in the first through hole, and at least part of the output shaft 31 is rotatably supported in the first through hole through the bearing 33. Specifically, as shown in fig. 1 to 4, the output member 3 is provided at the right end of the elastic member 2 and is fixed in the housing 7, the mounting bracket 32 has a first through hole penetrating the mounting bracket 32 in the left-right direction, the annular body 221 of the bearing 33 is fitted in the first through hole, the mounting portion 222 of the bearing 33 is fitted on the output shaft 31 such that the output shaft 31 is rotatably penetrated in the first through hole through the bearing 33, and the brush head is mounted at the left end of the output shaft 31.
The elastic component 2, the quality piece 4 and the output component 3 are arranged at intervals along the axial direction of the axis 1 in sequence, the quality piece 4 is connected with the output shaft 31, one side of the quality piece 4, which faces the elastic component 2, is provided with a plug-in part 41, the plug-in part 41 is provided with a plug-in groove extending along the axial direction of the axis 1, the protruding part 224 can be inserted in the plug-in groove, the output component 3 of the elastic component 2 is arranged in the shell 7, and the outer peripheral surface of the elastic component 2 of the resonance system 100 and the inner peripheral surface of the shell 7 are arranged at intervals along the radial direction of the axis 1 of the resonance system 100. Specifically, as shown in fig. 1-4, the right parts of the elastic component 2, the mass block 4 and the output component 3 are all disposed in the housing 7, and the output component 3 is fixed on the right end of the housing 7, the output component 3, the mass block 4 and the elastic component 2 are sequentially disposed at intervals along the left-right direction, the mass block 4 is the mass block 4 and may be circular, rectangular, triangular, oval or any irregular shape, the mass block 4 can adjust the resonance frequency of the resonance system 100 by adjusting its own weight, and the mass block 4 can be connected with the left end of the output shaft 31 (including without limitation, integrally forming, bonding, clamping, threaded connection, interference fit, etc.), so that the mass block 4 and the output shaft 31 form a whole, and the mass block 4 is suspended in the housing 7 through the output shaft 31, the left end of the property component is provided with a protruding portion 224, the right end surface of the mass block 4 may be provided with a plugging portion 41 extending from left to right, the plugging portion 41 is provided with an opening toward the protruding portion 224 and extending along the left-right direction, thereby, the protruding portion 224 is plugged into the slot, and the protruding portion 224 is also made to suspend the protruding portion 2 in the slot, and the elastic component can be made to suspend the output component 2 to generate resonance energy through the second component 3 and the output component 2 via the adjusting component to suspend in the housing 2.
When one of the first elastic unit 22 and the second elastic unit 23 is excited to rotate, the other of the first elastic unit 22 and the second elastic unit 23 is driven to rotate in opposite directions by the steel shaft 21 so as to resonate the first elastic unit 22 and the second elastic unit 23, and resonance energy is transmitted to the output shaft 31 through the mass block 4. Specifically, when the first elastic unit 22 is driven, the steel shaft 21 may drive the second elastic unit 23 to rotate so that the first elastic unit 22 and the second elastic unit 23 rotate in opposite directions, so that the first elastic unit 22 and the second elastic unit 23 resonate and transmit resonance energy to the brush head through the mass block 4 and the output shaft 31, or when the second elastic unit 23 is driven, the steel shaft 21 may drive the first elastic unit 22 to rotate so that the first elastic unit 22 and the second elastic unit 23 rotate in opposite directions, so that the first elastic unit 22 and the second elastic unit 23 resonate and transmit resonance energy to the brush head through the mass block 4 and the output shaft 31.
The motor assembly 6 is arranged in the housing 7 and is connected to the elastic assembly 2. Specifically, as shown in fig. 1 to 4, a motor assembly 6 is provided in the housing 7 at the right side of the resonance system 100, and the motor assembly 6 is connected to the second elastic unit 23 such that the motor excites the second elastic unit 23 to rotate.
The motor assembly 6 is excited to drive one of the first elastic unit 22 and the second elastic unit 23 of the elastic assembly 2 to rotate, one of the first elastic unit 22 and the second elastic unit 23 of the elastic assembly 2 drives the steel shaft 21 of the resonance system 100 to rotate so as to drive the other of the first elastic unit 22 and the second elastic unit 23 of the elastic assembly 2 to rotate, so that one of the first elastic unit 22 and the second elastic unit 23 of the elastic assembly 2 rotates and the other of the first elastic unit 22 and the second elastic unit 23 of the elastic assembly 2 resonates, and the elastic assembly 2 drives the brush head assembly to vibrate. Specifically, by adjusting the frequency of the motor assembly 6 such that the first elastic unit 22 and the second elastic unit 23 can resonate, the first elastic unit 22 and the second elastic unit 23 rotate in opposite directions, in other words, the first elastic unit 22 rotates clockwise, the second elastic unit 23 rotates counterclockwise, or the first elastic unit 22 rotates counterclockwise, the second elastic unit 23 rotates clockwise to resonate the first elastic unit 22 and the second elastic unit 23, and such an abnormal rotation reduces transmission of torsional vibration that may be transmitted to a user during an operation, and transmits resonance energy to the brush head assembly through the output shaft 31.
According to the resonance system 100 provided by the embodiment of the utility model, the steel shaft 21, the connecting cylinder 5, the first elastic unit 22 and the second elastic unit 23 are arranged, and the rigidity of the steel shaft 21 is high, so that the bending strength of the elastic assembly 2 is improved through the connecting cylinder 5 and the torsion capability between the first elastic unit 22 and the second elastic unit 23 is improved through the steel shaft 21 compared with the related art by utilizing the rigidity of the steel shaft 21, the rigidity of the connecting cylinder 5 is high, the bending rigidity and the torsion capability of the output shaft 31 are improved, the service life of the elastic assembly 2 is prolonged, the elastic assembly 2 is more reasonable, and the output assembly 3 is additionally arranged, so that the output shaft 32 is supported on the mounting frame 31 through the bearing 33, the integral bending and torsion rigidity of the output shaft 31 is improved, the deformation of the output shaft 31 is reduced, and the harmful vibration of the electric toothbrush is reduced.
In some embodiments, at least one of the first and second elastic units 22 and 23 includes an annular body 221, a mounting portion 222 disposed within the chamber, and a first plate 223 having flexibility.
The annular body 221 forms a closed-loop chamber circumferentially around the axis 1, the projection 224 is operatively engaged with the annular body 221, one end of the connecting tube 5 is penetrated in the annular body 221, and the outer peripheral surface of the connecting tube 5 and the inner peripheral surface of the annular body 221 are disposed at intervals in the radial direction of the axis 1. Specifically, as shown in fig. 4, the annular body 221 is a flexible material and may be any one of a circular ring shape, an elliptical ring shape, a polygonal ring shape, etc., the annular body 221 has an outer circumferential surface and an inner circumferential surface in an inner-outer direction, a center line of a chamber of the annular body 221 coincides with the axis 1, one end of the connection cylinder 5 is penetrated in the annular body 221 and is disposed at an interval in the inner-outer direction with the annular body 221, and the steel shaft 21 may be penetrated in the connection cylinder 5, so that the first elastic unit 22 and the second resonance are assembled into one body by the cooperation of the connection cylinder 5 and the steel shaft 21, so that the first elastic unit 22 and the second elastic unit 23 are assembled into one body.
One end of the first plate 223 is connected to the inner peripheral surface of the annular body 221, the other end of the first plate 223 is connected to the connecting cylinder 5, the first plate 223 extends in the radial direction of the axis 1 (the inside-outside direction as shown in fig. 4), and the first plate 223 and the projection 224 are disposed at intervals in the circumferential direction of the axis 1. Specifically, as shown in fig. 4, the first plate 223 is a flexible long plate, one end of the first plate 223 is integrally formed with the inner circumferential surface of the annular body 221, and the other end of the first plate 223 is integrally formed with the outer circumferential surface of the connecting cylinder 5, as seen from the left-right direction, whereby the annular body 221 and the connecting cylinder 5 are formed as a unit through the first plate 223, and the protruding portion 224 and one end of the first plate 223 are disposed at intervals in the circumferential direction of the annular body 221, whereby, when the first elastic unit 22 and the second elastic unit 23 are rotated, the first plate 223 can be caused to rotate by the annular body 221 driving the protruding portion 224, the displacement of the protruding portion 224 on the annular body 221 is improved, and the resonance energy of the first elastic unit 22 and the second elastic unit 23 is improved.
The first plate 223 and the ring body 221 may be elastically deformed to resist the rotation of the connecting cylinder 5 when the connecting cylinder 5 rotates, or the first plate 223 may be elastically deformed to resist the rotation of the ring body 221 when the protrusion 224 drives the ring body 221 to rotate. Specifically, when the connecting cylinder 5 rotates clockwise or counterclockwise around its circumference, the first plate 223 is driven to rotate, the first plate 223 drives the annular body 221 to rotate, the annular body 221 drives the protrusion 224 to rotate, so that the annular body 221, the first plate 223 and the protrusion 224 can be elastically deformed to resist the rotation of the connecting cylinder 5, or when the protrusion 224 drives the annular body 221 to rotate, the first plate 223 is driven to rotate, so that the annular body 221, the first plate 223 and the protrusion 224 can be elastically deformed to resist the rotation of the protrusion 224.
In some embodiments, at least one of the first elastic unit 22 and the second elastic unit 23 further includes a second plate 225 provided in the chamber, one end of the second plate 225 is connected to the inner circumferential surface of the annular body 221, the protrusion 224 is provided at the other end of the second plate 225, and the outer circumferential surface of the protrusion 224 is disposed at a radial interval from the outer circumferential surface of the connection cylinder 5 along the axis 1. Specifically, as shown in fig. 4, the second plate 225 is a flexible long plate and is located in the cavity of the outer ring, the length of the second plate 225 in the inner and outer directions is smaller than the length of the first plate 223 in the inner and outer directions, one end of the second plate 225 is integrally formed with the inner circumferential surface of the annular body 221, the other end of the second plate 225 is integrally formed with the outer circumferential surface of the protrusion 224, and the outer circumferential surface of the protrusion 224 and the outer circumferential surface of the inner ring are spaced in the inner and outer directions, thereby, the annular body 221 and the connecting cylinder 5 are formed into a whole through the second plate 225, and the elastic deformation capacity of the whole of the first elastic unit 22 and the second elastic unit 23 can be improved through the arrangement of the second plate 225, and the resonance energy of the first elastic unit 22 and the second elastic unit 23 can be further improved.
In some embodiments, the cross-sectional area of the first plate 223 decreases gradually in a direction away from the connecting cylinder 5, and the cross-sectional area of the second plate 225 decreases gradually in a direction away from the connecting cylinder 5, as seen in the axial direction of the axis 1. Specifically, as shown in fig. 4, the cross-sectional area of the first plate 223 connected to the connecting cylinder 5 is larger than the cross-sectional area of the first plate 223 connected to the annular body 221, because the connecting cylinder 5 drives the annular body 221 to rotate through the first plate 223, the cross-sectional area of the first plate 223 connected to the connecting cylinder 5 is larger, the stability of the first elastic unit 22 and the second elastic unit 23 is improved, the cross-sectional area of the first plate 223 connected to the annular body 221 is smaller, the elastic deformation of the first plate 223 is improved, the annular body 221 is driven to rotate around the circumferential direction of the axis 1 through the first plate 223, in addition, the cross-sectional area of the first plate 223 is gradually increased along the direction adjacent to the connecting cylinder 5, the stress concentration caused by deformation of the first plate 223 is eliminated, the fatigue life of the first plate 223 is prolonged, the cross-sectional area of the second plate 225 adjacent to the connecting cylinder 5 is larger than the cross-sectional area of the second plate 225 connected to the annular body 221, and the fatigue life of the second plate 225 is prolonged.
In some embodiments, the first plates 223 are a plurality of, the plurality of first plates 223 being circumferentially spaced along the axis 1; and/or, the second plates 225 are plural, the plural second plates 225 are disposed at intervals along the circumferential direction of the axis 1, and at least one first plate 223 is disposed between two adjacent second plates 225. Specifically, as shown in fig. 4, the first plates 223 are disposed at equal intervals along the circumferential direction of the connecting cylinder 5, and the second plates 225 are disposed at equal intervals along the circumferential direction of the connecting cylinder 5, so that the stability and the force transmission performance of the first elastic unit 22 and the second elastic unit 23 are improved, the arrangement of the first elastic unit 22 and the second elastic unit 23 is more reasonable, and the first plates 223 and the second plates 225 are alternately disposed in sequence in the circumferential direction of the connecting cylinder 5, so that the deformation of each position of the annular body 221 is further ensured to be substantially consistent, the stress distribution to which the annular body 221 is subjected is more uniform, and the service life of the annular body 221 is ensured.
In some embodiments, the number of the plurality of first plates 223 and the number of the plurality of second plates 225 are equal, the plurality of first plates 223 and the plurality of second plates 225 are equally spaced along the circumference of the axis 1, and at least one first plate 223 is disposed between two adjacent second plates 225, the plurality of first plates 223 and the plurality of second plates 225 are equally spaced along the circumference of the axis 1. Thus, when the connecting cylinder 5 transmits force to the annular body 221 through the first plate 223 or transmits force to the annular body 221 through the second plate 225, since the number of the first plates 223 and the number of the second plates 225 are equal, deformation of each position of the annular body 221 can be made to be substantially uniform, so that stress of the annular body 221 is more balanced, stress distribution is more uniform, and service life of the annular body 221 is prolonged.
It will be appreciated that the number of first plates 223 and the number of second plates 225 in embodiments of the present utility model may also be varied according to actual needs, for example: the number of first plates 223 is greater than the number of second plates 225, or the number of first plates 223 is less than the number of second plates 225.
In some embodiments, at least part of the first plate 223 of the second resilient unit 23 is located within the projection 224 of the first resilient unit 22, seen in the axial direction of the axis 1 (seen from left to right or seen from right to left). Specifically, as shown in fig. 4, the second plate 225 of the second elastic unit 23 and the first plate 223 of the first elastic unit 22 are disposed opposite to each other in the left-right direction, thereby causing the first elastic unit 22 and the second elastic unit 23 to have a phase difference when rotated, facilitating the first elastic unit 22 and the second elastic unit 23 to resonate.
In some embodiments, the outer circumferential profile of the annular body 221 is circular, elliptical or polygonal, as seen in the axial direction of the axis 1. Thus, the annular body 221 has a variety, so that a user can manufacture the annular body 221 according to actual conditions.
In some embodiments, seen in the axial direction of the axis 1, the outer circumferential profile of the projection 224 is circular, the inner circumferential profile of the insertion groove is circular arc-shaped, the diameter of the insertion groove is equal to the diameter of the projection 224, and the corresponding circumferential angle of the inner circumferential profile of the insertion groove is greater than 180 °. Specifically, as shown in fig. 4, the protruding portion 224 is cylindrical, oval cylindrical, polygonal and fixed on the second plate 225, and the inner peripheral outline of the slot may be cylindrical, oval cylindrical, polygonal, so that the protrusion is inserted into the slot, so that the elastic component 2 and the adjusting device are assembled into a whole, so that resonance energy is transferred to the mass block 4, and the diameter of the insertion slot is equal to that of the protruding portion 224, so that the outer peripheral surface of the protruding portion 224 is attached to the inner peripheral surface of the insertion slot, and the protruding portion 224 is prevented from shaking when inserted into the insertion slot, and the corresponding peripheral angle of the inner peripheral outline of the insertion slot is greater than 180 °, so that the protruding portion 224 is prevented from sliding out of the insertion slot when inserted into the insertion slot, and the elastic component 2 is more stably matched with the mass block 4.
In some embodiments, the dimension of the first elastic unit 22 in the axial direction of the axis 1 is L1, the dimension of the second elastic unit 23 in the axial direction of the axis 1 is L2, the distance between the first elastic unit 22 and the second elastic unit 23 in the axial direction of the axis 1 is L3, the dimension of the steel shaft 21 in the axial direction of the axis 1 is L4, and the sum of L1, L2, and L3 is equal to L4. Specifically, the thickness of the first elastic unit 22 in the left-right direction is L1, the thickness of the second elastic unit 23 in the left-right direction is L2, the distance between the left end surface of the first elastic unit 22 and the right end surface of the second elastic unit 23 in the left-right direction is L3, the length of the steel shaft 21 in the left-right direction is L4, and l4=l1+l2+l3, in other words, the length of the steel shaft 21 in the left-right direction is equal to the horizontal distance between the right end surface of the first elastic unit 22 and the left end surface of the second elastic unit 23, when l4> l1+l2+l3, the length of the steel shaft 21 in the left-right direction is excessively long, which leads to an increase in the processing and manufacturing cost of the steel shaft 21 and also leads to an increase in the length of the elastic assembly 2, thereby being unfavorable for the assembly of the electric toothbrush, and when l4+l1+l3, the length of the steel shaft 21 is excessively short, which leads to an influence on the service life of the steel shaft 21, whereby the service life of the steel shaft 21 is also lower than that of the steel shaft 21 is ensured by the service life of the steel shaft 21, and the service life of the steel shaft 21 is lower than that of the steel shaft 21, and the service life of the steel shaft 21 is ensured by l4+l2+l3.
The resonance system 100 of the embodiment of the present utility model realizes reciprocating torsional vibration (oscillation) based on the resonance principle, and the shape of the mass block 4 of the resonance system 100 of the embodiment of the present utility model has no special requirement, the size of the elastic component 2 has no requirement, the two must be designed in a matching manner according to the required resonance frequency, the resonance frequency calculation formula f=1/2, k is the spring stiffness, and m is the mass. The coil is energized by a battery direct current power supply, and according to the electro-magnetic principle, the magnet part mass system of the motor assembly 6 is twisted to generate torsional vibration, and the first elastic unit 22 and the second elastic unit 23 are twisted to deform, so that force is transmitted along the connecting part, and finally the torsion is transmitted into the output shaft 31. When the vibration system is designed, the vibration mode is torsional vibration mode, and the movement directions of the first elastic unit 22 and the second elastic unit 23 are 180 degrees out of phase, namely the front direction and the rear direction are opposite, at the moment, the cleaning assembly realizes rotation, the center node of the steel shaft 21 is zero point, the front torque and the rear torque counteract, and harmful vibration is reduced. The direction of rotation depends on the direction of energization, and the frequency of operation of the electric toothbrush is mostly around 260Hz, and the frequency of rotation depends on the frequency of energization.
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.
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 utility model. 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 embodiments of the present utility model have been shown and described above, it will 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 may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.
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.
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 utility model. 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 embodiments of the present utility model have been shown and described above, it will 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 may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.
Claims (10)
1. A resonant system, comprising: the elastic assembly comprises a steel shaft, an axis, a connecting cylinder with flexibility, a first elastic unit and a second elastic unit, wherein the connecting cylinder and the steel shaft extend along the axial direction of the axis, the first elastic unit and the second elastic unit are arranged at intervals along the axial direction of the axis and are integrally formed with the connecting cylinder, the steel shaft is arranged in the connecting cylinder in a penetrating manner, and protruding parts are arranged on the first elastic unit and the second elastic unit; the output assembly is arranged on one side of the elastic assembly, the output assembly and the elastic assembly are arranged at intervals along the axial direction of the axis, the output assembly comprises an output shaft, a mounting frame and a bearing, the mounting frame is provided with a first through hole penetrating through the mounting frame along the axial direction of the axis, the bearing is arranged in the first through hole, and at least part of the output shaft is rotatably supported in the first through hole through the bearing; the mass block is arranged between the elastic component and the output component, the elastic component, the mass block and the output component are sequentially arranged at intervals along the axial direction of the axis, the mass block is connected with the output shaft, one side of the mass block, which faces the elastic component, is provided with a plug-in connection part, the plug-in connection part is provided with a plug-in connection groove extending along the axial direction of the axis, and the protruding part can be inserted into the plug-in connection groove; when one of the first elastic unit and the second elastic unit is excited to rotate, the other of the first elastic unit and the second elastic unit is driven to rotate in an opposite direction through the steel shaft, so that resonance is generated between the first elastic unit and the second elastic unit, and resonance energy is transmitted to the output shaft through the mass block.
2. The resonance system according to claim 1, wherein at least one of the first elastic unit and the second elastic unit comprises:
the annular body surrounds the axis to form a closed-loop cavity along the circumferential direction of the axis, the protruding part is in operative engagement with the annular body, one end of the connecting cylinder penetrates through the annular body, and the outer circumferential surface of the connecting cylinder and the inner circumferential surface of the annular body are arranged at intervals along the radial direction of the axis;
a flexible first plate, one end of the first plate is connected with the inner peripheral surface of the annular body, the other end of the first plate is connected with the connecting cylinder, the first plate extends in the radial direction of the axis, the first plate and the protruding part are arranged at intervals along the circumferential direction of the axis,
when the connecting cylinder rotates, the first plate and the annular body can generate elastic deformation to resist the rotation of the connecting cylinder, or when the protruding part drives the annular body to rotate, the first plate can generate elastic deformation to resist the rotation of the annular body.
3. The resonance system according to claim 2, wherein at least one of the first elastic unit and the second elastic unit further comprises a second plate provided in the chamber, one end of the second plate is connected to the inner peripheral surface of the annular body, the protruding portion is provided at the other end of the second plate, and the outer peripheral surface of the protruding portion and the outer peripheral surface of the connecting cylinder are provided at a radial interval along the axis.
4. A resonance system according to claim 3, wherein the cross-sectional area of the first plate decreases gradually in a direction away from the connecting cylinder, and the cross-sectional area of the second plate decreases gradually in a direction away from the connecting cylinder, seen in an axial direction of the axis.
5. A resonant system according to claim 3, wherein the first plates are a plurality of first plates spaced circumferentially along the axis; and/or the second plates are a plurality of, the second plates are arranged at intervals along the circumferential direction of the axis, and at least one first plate is arranged between two adjacent second plates.
6. The resonant system of claim 5, wherein a number of the plurality of first plates and a number of the plurality of second plates are equal, the plurality of first plates and the plurality of second plates being equally spaced circumferentially along the axis.
7. The resonance system according to claim 1, characterized in that at least part of the first plate of the second elastic unit is located in a projection of the first elastic unit, seen in the axial direction of the axis.
8. The resonance system according to claim 2, wherein the outer circumferential profile of the annular body is circular, elliptical or polygonal as seen in the axial direction of the axis.
9. The resonance system according to claim 1, wherein the outer circumferential profile of the projection is circular, the inner circumferential profile of the insertion groove is circular arc-shaped, the diameter of the insertion groove is equal to the diameter of the projection, and the corresponding circumferential angle of the inner circumferential profile of the insertion groove is greater than 180 ° as seen in the axial direction of the axis.
10. An electric toothbrush, comprising:
a housing;
a resonance system provided in the housing, the resonance system being as set forth in any one of claims 1 to 9, the output assembly of the elastic assembly being provided in the housing, the outer peripheral surface of the elastic assembly of the resonance system and the inner peripheral surface of the housing being disposed at a radial interval in the axial direction of the axis of the resonance system;
the motor component is arranged in the shell and is connected with the elastic component;
the motor assembly is excited to drive one of the first elastic unit and the second elastic unit of the elastic assembly to rotate, one of the first elastic unit and the second elastic unit of the elastic assembly drives the steel shaft of the resonance system to rotate so as to drive the other one of the first elastic unit and the second elastic unit of the elastic assembly to rotate, so that one of the first elastic unit and the second elastic unit of the elastic assembly rotates and the other one of the first elastic unit and the second elastic unit of the elastic assembly resonates, and the elastic assembly drives the brush head assembly to vibrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320753707.4U CN219499131U (en) | 2023-03-30 | 2023-03-30 | Resonance system and electric toothbrush |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320753707.4U CN219499131U (en) | 2023-03-30 | 2023-03-30 | Resonance system and electric toothbrush |
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| Publication Number | Publication Date |
|---|---|
| CN219499131U true CN219499131U (en) | 2023-08-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320753707.4U Active CN219499131U (en) | 2023-03-30 | 2023-03-30 | Resonance system and electric toothbrush |
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| Country | Link |
|---|---|
| CN (1) | CN219499131U (en) |
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2023
- 2023-03-30 CN CN202320753707.4U patent/CN219499131U/en active Active
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