Vibration device and electric toothbrush

Abstract

The utility model discloses a vibrating device and an electric toothbrush, the vibrating device for the electric toothbrush comprises a driving source with a rotating shaft and a driving shaft, and the vibrating device further comprises an eccentric swing assembly arranged between the rotating shaft and the driving shaft; the eccentric swing assembly comprises an eccentric part and a connecting part, the eccentric part is fixedly arranged on the rotating shaft, the connecting part is fixedly arranged on the driving shaft, the rotating shaft drives the eccentric part to rotate, and the eccentric part drives the connecting part to swing back and forth so as to drive the driving shaft to rotate back and forth around the swing axis of the driving shaft. And the rotating axis of the rotating shaft and the swinging axis of the driving shaft are coaxially or parallelly arranged. The current direction does not need to be changed frequently, so that the energy loss is reduced, the power consumption of the whole device is reduced, frequent charging is not needed, the device can be continuously used for a long time, the internal vibration frequency is reduced, internal parts can be protected, and the service life is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to oral cavity cleaner technical field especially, it relates to a vibrating device and electric toothbrush. BACKGROUND

[0002] Most electric toothbrushes are through the fast rotation or vibration of linear oscillator, make the brush head produce high frequency vibration, instantaneously decompose toothpaste into fine foam, in-depth cleaning interdental, at the same time, the tremor of bristle can promote the blood circulation of oral cavity, has the massage effect to gingival tissue.

[0003] Some technologies, linear oscillator is by the interaction of permanent magnet and electromagnet after electrification, when the current direction changes, the magnetic pole of electromagnet also changes and switches between N pole and S pole in time, so the change of interaction appears, when this high frequency changes, motor will appear left and right reciprocating motion, thereby generating high frequency oscillation.

[0004] The high frequency vibration of this kind of electric toothbrush can easily cause the damage of internal parts, and the manufacturing cost is higher, the power consumption is big, cannot long time continuous use, needs frequent charging. INVENTION CONTENTS

[0005] The utility model solves the technical problem in at, provide a vibrating device and electric toothbrush.

[0006] The utility model adopts the technical scheme in solving its technical problem: construct a vibrating device for electric toothbrush, including the drive source and drive shaft with pivot, the vibrating device still includes the eccentric swing subassembly of setting between pivot and drive shaft;The eccentric swing subassembly includes eccentric part and connecting piece, the eccentric part is fixedly arranged on pivot, the connecting piece is fixedly arranged on drive shaft, pivot drives eccentric part rotation, and is driven by eccentric part reciprocating swing to drive drive shaft reciprocating rotation around its swing axis, the rotation axis of pivot and the swing axis of drive shaft are coaxial or parallel arrangement.

[0007] Further, the first drive groove is arranged on the connecting piece, the eccentric part includes the plug-in part that can be rotatable and is inserted in the first drive groove, the plug-in part is cylindrical;The length direction of first drive groove and the axis of plug-in part are perpendicular;The eccentric part sleeve joint part axis and pivot axis are parallel and do not coincide with each other.

[0008] Further, the eccentric part is cylindrical as a whole, and the upper part thereof is the plug-in part;The eccentric hole is formed in the eccentric part for fixedly inserting the pivot;The axis of eccentric hole and the axis of eccentric part are parallel and do not coincide with each other;

[0009] Or, two ends of the eccentric member are a connecting end and a plug-in end respectively; the connecting end is provided with a shaft hole for fixed plug-in of the rotating shaft; the plug-in end is the plug-in part, which is rotatably plugged in the first driving groove; the axis of the shaft hole and the axis of the plug-in part are parallel to each other and do not coincide.

[0010] Further, the connecting member is provided with a first driving shaft hole for fixed plug-in of the driving shaft; the first driving shaft hole is located at one side of the first driving groove.

[0011] Further, a gap is arranged between the plug-in part and two side ends in the first driving groove; or, the plug-in part is tangent to the side wall of the first driving groove.

[0012] Further, the vibration device further comprises a linkage member and a dial shaft; the linkage member is provided with a second driving groove and a second driving shaft hole arranged at one side of the second driving groove; the length direction of the second driving groove is perpendicular to the axis of the plug-in part; one end of the dial shaft is fixedly connected with the connecting member and swings with the connecting member, and the other end is slidably plugged in the second driving groove; the driving shaft is fixedly plugged in the second driving shaft hole.

[0013] Further, the connecting member is provided with a stabilizing mechanism for stabilizing swing of the connecting member.

[0014] Further, the stabilizing mechanism comprises guide rods which are arranged outwardly at two sides in the swing direction of the connecting member;

[0015] Or, the stabilizing mechanism comprises a pin hole which is arranged on the connecting member and is located away from one end of the dial shaft, and a positioning pin which is rotatably plugged in the pin hole.

[0016] Further, the stabilizing mechanism is integrally formed on the connecting member; or, the stabilizing mechanism is detachably installed on the connecting member.

[0017] In addition, the utility model also provides a kind of electric toothbrush, including above-mentioned vibration device.

[0018] The implementation of the utility model has the following beneficial effects: through the eccentric swing assembly arranged between the rotating shaft and the driving shaft, the eccentric swing assembly includes an eccentric piece and a connecting piece, the eccentric piece is fixedly arranged on the rotating shaft, the connecting piece is fixedly arranged on the driving shaft, the rotating shaft drives the eccentric piece to rotate, and the eccentric piece drives the connecting piece to swing back and forth to drive the driving shaft to rotate back and forth around its swing axis, the rotating axis of the rotating shaft is coaxial or parallel to the swing axis of the driving shaft, when the driving source drives the rotating shaft to rotate, the rotating shaft will drive the eccentric piece to rotate, because the axis of the connection part of the eccentric piece and the connecting piece does not coincide with the axis of the rotating shaft, the eccentric piece will rotate around the rotating shaft when rotating. The axis rotates, and the rotating eccentric member drives the connecting member to rotate back and forth around the axis of the drive shaft, and the connecting member drives the drive shaft fixed thereon to rotate back and forth around its own axis for angular deflection, and is connected to the brush rod through the drive shaft, and then the drive shaft drives the brush rod to rotate back and forth for angular deflection to achieve the effect of vibration. Since the eccentric swing component converts the surrounding rotation into a reciprocating angular deflection, the surrounding rotation can reduce internal vibration and protect internal parts, and the reciprocating angular deflection occurs at the front end of the entire device, away from the internal parts, further protecting the internal parts and extending the service life. During the entire operation process inside the device, only the drive source needs to drive the shaft to rotate to achieve the vibration effect. There is no need to frequently change the direction of the current, thereby reducing energy loss and reducing the power consumption of the entire device. It does not require frequent charging and can be used continuously for a long time, reducing the internal vibration frequency, protecting the internal parts and extending the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solution of the present invention, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0020] In the attached figure:

[0021] Figure 1 is a schematic structural diagram of a vibration device in some embodiments of the present utility model;

[0022] Figure 2 This is a structural diagram of the eccentric member and the connecting member of the utility model;

[0023] Figure 3 This is a schematic structural diagram of the eccentric member and the first driving groove of the utility model;

[0024] Figure 4 It is a structural diagram of the connecting end and the plugging end of the utility model;

[0025] Figure 5 is a structural schematic view of the linkage member of the utility model;

[0026] Figure 6 is a structural schematic view of the linkage member and the driving shaft of the utility model;

[0027] Figure 7 is a sectional schematic view of the connecting member and the linkage member of the utility model;

[0028] Figure 8 is a structural schematic view of the pin hole and the connecting member of the utility model.

[0029] Legend to the Figures

[0030] rotating shaft 1, driving source 2, driving shaft 3, eccentric swing assembly 4, eccentric member 41, plug-in part 411, eccentric hole 412, connecting end 413, plug-in end 414, shaft hole 415, connecting member 42, first driving groove 421, first driving shaft hole 422, linkage member 5, second driving groove 51, second driving shaft hole 52, driving shaft 6, stabilizing mechanism 7, guide rod 71, pin hole 72. DETAILED DESCRIPTION

[0031] In order to have a clearer understanding of the technical features, objects and effects of the utility model, the specific implementation manners of the utility model will be described in detail with reference to the drawings. In the following description, it should be understood that the directions or position relations indicated by "front", "back", "up", "down", "left", "right", "vertical", "horizontal", "vertical", "horizontal", "top", "bottom", "inner", "outer", "head", "tail" are based on the directions or position relations shown in the drawings, the specific directions are constructed and operated, and are only for the convenience of describing the technical scheme, and cannot be understood as indicating that the indicated device or element must have a specific direction, so it cannot be understood as a limitation on the utility model.

[0032] It should be noted that, unless otherwise explicitly specified and limited, the terms such as "mounting", "connecting", "connecting", "fixing", "arranging" and the like should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or it can be the internal communication of two elements or the interaction relationship between two elements. When an element is referred to as "on" or "under" another element, the element can be "directly" or "indirectly" located on another element, or one or more intermediate elements can exist. The terms "first", "second", "third" and the like are only for the convenience of describing the technical solutions, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features with "first", "second", "third" and the like can be explicitly or implicitly included one or more of the features. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0033] In the following description, specific details such as specific system structures, techniques, etc. are presented for the purpose of explanation, not for the purpose of limitation, so that the embodiments of the present application can be thoroughly understood. However, it should be clear to those skilled in the art that the present application can also be implemented in other embodiments without these specific details. In other cases, detailed description of well-known systems, devices, circuits and methods is omitted to avoid unnecessary details that hinder the description of the present application.

[0034] Please refer to Figures 1 to 4 In some embodiments, the vibration device for electric toothbrush includes a driving source 2 with a rotating shaft 1 and a driving shaft 3, and further includes an eccentric swinging assembly 4 arranged between the rotating shaft 1 and the driving shaft 3. The eccentric swinging assembly 4 includes an eccentric part 41 and a connecting part 42. The eccentric part 41 is fixedly arranged on the rotating shaft 1, and the connecting part 42 is fixedly arranged on the driving shaft 3. The rotating shaft 1 drives the eccentric part 41 to rotate, and the connecting part 42 is driven by the eccentric part 41 to reciprocate to drive the driving shaft 3 to reciprocate around the swinging axis of the driving shaft 3. The rotating axis of the rotating shaft 1 is coaxial or parallel with the swinging axis of the driving shaft 3.

[0035] The rotating axis of the rotating shaft 1 is coaxial or parallel with the swinging axis of the driving shaft 3. When the rotating axis of the rotating shaft 1 is coaxial with the swinging axis of the driving shaft 3, the vibration of the whole device is more biased to the center, so that the internal parts are subjected to smaller and more uniform vibration, which can further protect the internal parts, and the customer can use it more conveniently and comfortably, and it is convenient to operate.

[0036] When the rotation axis of the rotating shaft 1 is arranged different from the oscillation axis of the driving shaft 3, the internal parts of the whole device are less, the linkage connection is less, the volume of the whole device can be reduced, it is convenient for customers to carry, and since the parts are less, the probability of failure of the device is lower, and the service life can be prolonged.

[0037] Wherein, the eccentric member 41 is matched with the connecting member 42, and since the distance between the eccentric member 41 and the axis of the driving shaft 3 is greater than the distance between the rotating shaft 1 and the axis of the driving shaft 3 when the eccentric member 41 rotates, the torque generated by the eccentric member 41 is greater than the torque directly acting on the driving shaft 3 by the rotating shaft 1, and through the cooperation of the eccentric member 41 and the connecting member 42, greater force can be generated on the driving shaft 3, so that the driving shaft 3 can drive the brush rod to reciprocate at a larger angle with less effort, further reducing energy consumption and prolonging use time, and further cleaning the inside of the oral cavity.

[0038] Wherein, since the cooperation of the eccentric member 41 and the connecting member 42 can generate greater force on the driving shaft 3, a smaller driving source 2 can be used to drive the eccentric member 41 to rotate, and then the connecting member 42 drives the driving shaft 3 to reciprocate at a larger angle, so that the driving shaft 3 drives the brush rod to reciprocate at a larger angle, achieving the effect of vibration, thereby saving internal space and reducing manufacturing cost.

[0039] The application sets an eccentric swing assembly 4 between the rotating shaft 1 and the driving shaft 3, the eccentric swing assembly 4 comprises an eccentric part 41 and a connecting part 42, the eccentric part 41 is fixedly arranged on the rotating shaft 1, the connecting part 42 is fixedly arranged on the driving shaft 3, the rotating shaft 1 drives the eccentric part 41 to rotate, and the connecting part 42 is reciprocatingly swung by the eccentric part 41 to drive the driving shaft 3 to reciprocatingly rotate around the swing axis of the driving shaft 3, the rotating axis of the rotating shaft 1 is coaxial with or parallel to the swing axis of the driving shaft 3, when the driving source 2 drives the rotating shaft 1 to rotate, the rotating shaft 1 drives the eccentric part 41 to rotate, because the axis of the connecting part 42 is not coincident with the axis of the rotating shaft 1, the eccentric part 41 rotates around the axis of the rotating shaft 1, the rotating eccentric part 41 drives the connecting part 42 to reciprocatingly rotate around the axis of the driving shaft 3, and the connecting part 42 drives the driving shaft 3 fixedly connected thereto to reciprocatingly deflect around the axis of the driving shaft 3, the driving shaft 3 is connected with the brush rod, and the driving shaft 3 drives the brush rod to reciprocatingly deflect to achieve the vibration effect, because the eccentric swing assembly 4 changes the surrounding rotation into the reciprocating angular deflection, the surrounding rotation can reduce the internal vibration and protect the internal parts, and the reciprocating angular deflection occurs at the front end of the whole device, far away from the internal parts, further protecting the internal parts and prolonging the service life.

[0040] The driving source 2 can drive the rotating shaft 1 to rotate in the same direction or in the opposite direction, when the driving source 2 rotates in one direction, the energy loss can be further reduced, the service life can be prolonged, the internal vibration can be reduced, and the service life can be prolonged.

[0041] The driving source 2 can also drive the rotating shaft 1 to reciprocatingly rotate in the same direction or in the opposite direction, so that the rotating shaft 1 drives the eccentric part 41 to rotate back and forth, the frequency of the eccentric part 41 driving the connecting part 42 is reduced, the frequency of the driving shaft 3 reciprocatingly deflecting is reduced, the frequency of the brush rod is reduced, the device is suitable for different use environments, the vibration frequency is further reduced, and the service life of the internal parts is prolonged.

[0042] The driving shaft 3 can be integrally injection molded on the connecting part 42, the connecting part 42 and the driving shaft 3 injection molded together can reduce the installation process and improve the installation efficiency, the connection between the connecting part 42 and the driving shaft 3 injection molded together is more compact, the energy loss can be reduced during operation, the stability of the driving shaft 3 reciprocatingly deflecting can be improved, noise generation can be reduced, and the service life can be prolonged.

[0043] Please refer to Figures 2 to 6 In some embodiments, the connecting piece 42 is provided with a first driving groove 421, and the eccentric piece 41 comprises a plug-in part 411 rotatably plugged into the first driving groove 421. The plug-in part 411 is cylindrical, the length direction of the first driving groove 421 is perpendicular to the axis of the plug-in part 411, and the axis of the plug-in part 411 is parallel to the axis of the rotating shaft 1 and does not coincide with the axis of the rotating shaft 1.

[0044] The first driving groove 421 can be in the shape of a runway, and the plug-in part 411 of the eccentric piece 41 is plugged into the first driving groove 421. When the plug-in part 411 rotates with the eccentric piece 41, the plug-in part 411 rotates around the axis of the rotating shaft 1. During the rotation of the plug-in part 411, the plug-in part 411 repeatedly pushes the side wall of the first driving groove 421, driving the connecting piece 42 to angularly deflect around the axis of the driving shaft 3, and then the connecting piece 42 drives the driving shaft 3 fixedly connected thereto to angularly deflect back and forth to achieve the vibration effect. The entire process reduces the vibration of internal parts and prolongs the service life.

[0045] The first driving groove 421 can also be in the shape of a rectangle or a C shape on both sides of the space in the middle of which the plug-in part 411 is stored. When the plug-in part 411 rotates, the plug-in part 411 repeatedly contacts the side wall of the first driving groove 421. When the plug-in part 411 contacts one side of the first driving groove 421 and continues to rotate to this side, the plug-in part 411 drives the connecting piece 42 to angularly deflect in the direction of the rotation of the plug-in part 411 through the first driving groove 421. When the plug-in part 411 rotates to the other side wall of the first driving groove 421, the angular deflection stops. Then, when the plug-in part 411 continues to rotate and contacts the other side wall of the first driving groove 421, the plug-in part 411 drives the connecting piece 42 to angularly deflect in the opposite direction of the rotation of the plug-in part 411 through the first driving groove 421. Thus, the connecting piece 42 angularly deflects back and forth, and the driving shaft 3 is driven to angularly deflect synchronously, thereby achieving the vibration effect.

[0046] The plug-in part 411 can be in the shape of a rectangle, a runway, or a cone. As long as, during the rotation of the plug-in part 411, the space inside the first driving groove 421 allows the plug-in part 411 to contact the side wall of the first driving groove 421 without causing the eccentric piece 41 and the connecting piece 42 to be stuck to each other, and there is enough space for the connecting piece 42 to angularly deflect around the driving shaft 3, the vibration effect can be achieved.

[0047] The first driving groove 421 is arranged on the connecting piece 42, the eccentric piece 41 comprises a plug-in part 411 rotatably plugged in the first driving groove 421, the plug-in part 411 is cylindrical, the length direction of the first driving groove 421 is perpendicular to the axis of the plug-in part 411, the axis of the eccentric piece 41 and the axis of the rotating shaft 1 are parallel to each other and do not coincide, when the plug-in part 411 rotates with the eccentric piece 41, the plug-in part 411 will drive the connecting piece 42 to reciprocate angularly around the axis of the driving shaft 3 in the process of rotation through the cooperation between the first driving groove 421, the angularly reciprocating connecting piece 42 will drive the driving shaft 3 on it to synchronously reciprocate angularly around its own axis, the driving shaft 3 drives the brush rod to reciprocate angularly to achieve the vibration effect to clean the oral cavity, thereby reducing the vibration of the internal parts, reducing the damage of the internal parts, prolonging the service life of the internal parts, reducing the energy loss, and prolonging the use time.

[0048] The plug-in part 411 is cylindrical, after the cooperation between the plug-in part 411 and the first driving groove 421, when the rotating plug-in part 411 drives the connecting piece 42 to angularly reciprocate through the first driving groove 421, the cylindrical plug-in part 411 can minimally affect the angular reciprocation of the first driving groove 421, so that the connecting piece 42 rotates around the axis of the driving shaft 3 and rotates with the eccentric piece 41, the cylindrical plug-in part 411 can reduce the area of the first driving groove 421, thereby reducing the volume of the connecting piece 42, reducing the internal space, further reducing the occupied space of the whole device, facilitating carrying and installation, and improving the utilization rate of the internal space.

[0049] Please refer to Figure 3 and Figure 4 In some embodiments, the eccentric piece 41 is cylindrical as a whole, the upper part thereof is the plug-in part 411, the eccentric piece 41 is provided with an eccentric hole 412 for fixedly plugging the rotating shaft 1, the axis of the eccentric hole 412 is parallel to the axis of the eccentric piece 41 and does not coincide, or the two ends of the eccentric piece 41 are respectively a connecting end 413 and a plug-in end 414, the connecting end 413 is provided with a shaft hole 415 for fixedly plugging the rotating shaft 1, the plug-in end 414 is the plug-in part 411 rotatably plugged in the first driving groove 421, the axis of the shaft hole 415 is parallel to the axis of the plug-in part 411 and does not coincide.

[0050] The application is characterized in that the eccentric part 41 is a whole cylindrical shape, the upper part is a plug-in part 411, the eccentric part 41 is provided with an eccentric hole 412 for fixing and plugging the rotating shaft 1, the axis of the eccentric hole 412 is parallel to and does not coincide with the axis of the eccentric part 41, the eccentric hole 412 is provided with an eccentric hole 412 for fixing and plugging the rotating shaft 1, and the new eccentric part 41 can be installed on the rotating shaft 1 through the eccentric hole 412 after the eccentric part 41 is worn out, so that the replacement and maintenance are facilitated, the maintenance cost is saved, and the position of the eccentric hole 412 can be set according to different use scenes. When the eccentric hole 412 is closer to the center, the eccentricity of the eccentric part 41 is smaller, and the angle deflection of the whole device is smaller, but the angle deflection frequency of reciprocation is larger. On the contrary, when the eccentric hole 412 is farther away from the center, the eccentricity of the eccentric part 41 is larger, and the angle deflection of the whole device is larger, but the angle deflection frequency of reciprocation is smaller. Thus, the device is suitable for different use environments and is more diversified. The cylindrical eccentric part 41 is more convenient for processing and manufacturing, can reduce the manufacturing cost, and is convenient for replacement.

[0051] The application is characterized in that the two ends of the eccentric part 41 are respectively a connecting end 413 and a plug-in end 414, the connecting end 413 is provided with a shaft hole 415 for fixing and plugging the rotating shaft 1, the plug-in end 414 is a plug-in part 411, can be rotatably plugged in the first driving groove 421, the axis of the shaft hole 415 is parallel to and does not coincide with the axis of the plug-in part 411, the connecting end 413 is installed on the rotating shaft 1 through the shaft hole 415, and the replacement is facilitated after the eccentric part 41 is worn out, so that the maintenance cost is saved. The two ends of the eccentric part 41 are respectively a connecting end 413 and a plug-in end 414, the plug-in end 414 can be circular, polygonal or racetrack-shaped, and then the plug-in end 414 is selected through different use environments and matched housings. The volume of the plug-in end 414 can be larger than that of the connecting end 413, so that the connection between the plug-in end 414 and the rotating shaft 1 is more stable, the rotation is more stable, the stability of the whole device is improved, the volume of the space occupied by the whole eccentric swing assembly 4 can be reduced due to the small area of the connecting end 413, the space inside the housing is reasonably utilized, and the space utilization rate is improved.

[0052] Please refer to Figure 3 In some embodiments, the connecting piece 42 is provided with a first driving shaft hole 422 for fixing and plugging the driving shaft 3, and the first driving shaft hole 422 is located on one side of the first driving groove 421.

[0053] The application is characterized in that the connecting piece 42 is provided with a first driving shaft hole 422 for fixing and plugging the driving shaft 3, and the first driving shaft hole 422 is located on one side of the first driving groove 421. The first driving shaft hole 422 provided on the connecting piece 42 can facilitate the replacement of the driving shaft 3 after the driving shaft 3 is worn out, so that the replacement and maintenance are facilitated, and the maintenance cost is saved.

[0054] Please refer toFigures 2 to 4 In some embodiments, the insertion portion 411 is provided with a gap between the two side ends in the first driving groove 421, or the insertion portion 411 is tangent to the side wall of the first driving groove 421.

[0055] The present application sets a gap between the insertion portion 411 and the two side ends in the first driving groove 421, when the insertion portion 411 rotates in the first driving groove 421, the gap between the two side ends in the first driving groove 421 can avoid the insertion portion 411 contacting the two side ends of the first driving groove 421, prevent the insertion portion 411 driving the connecting piece 42 to move to the direction of the two side ends of the first driving groove 421 through the first driving groove 421, avoid the damage of the connecting piece 42, and further prolong the service life, reduce the maintenance cost and the maintenance frequency.

[0056] The present application sets the insertion portion 411 tangent to the side wall of the first driving groove 421, because the insertion portion 411 is circular, when the insertion portion 411 is tangent to the first driving groove 421, the insertion portion 411 can drive the connecting piece 42 to deflect at an angle while the connecting piece 42 and the insertion portion 411 rotate relative to each other, and further improve the utilization rate of the first driving groove 421, reduce the occupied space of the connecting piece 42, and reduce the occupied space of the entire device, and further make the device more compact, convenient for personnel to use and carry.

[0057] Please refer to Figures 5 to 8 In some embodiments, the vibration device further comprises a linkage 5 and a dial shaft 6, the linkage 5 is provided with a second driving groove 51 and a second driving shaft hole 52 provided on one side of the second driving groove 51, the length direction of the second driving groove 51 is perpendicular to the axis of the insertion portion 411, one end of the dial shaft 6 is fixedly connected with the connecting piece 42 and swings driven by the connecting piece 42, the other end is slidably inserted into the second driving groove 51, and the driving shaft 3 is fixedly inserted into the second driving shaft hole 52.

[0058] The application further comprises a linkage 5 and a dial shaft 6 through the vibration device, the linkage 5 is provided with a second driving groove 51 and a second driving shaft hole 52 arranged on one side of the second driving groove 51, the length direction of the second driving groove 51 is perpendicular to the axis of the plug-in part 411, one end of the dial shaft 6 is fixedly connected with the connecting piece 42 and swings with the connecting piece 42, the other end is slidably inserted into the second driving groove 51, the driving shaft 3 is fixedly inserted into the second driving shaft hole 52, when the rotating shaft 1 drives the plug-in part 411 to rotate, the plug-in part 411 drives the connecting piece 42 to reciprocating swing through the first driving groove 421, the swinging connecting piece 42 drives the dial shaft 6 to synchronously reciprocating swing, the dial shaft 6 drives the linkage 5 to angularly deflect through the second driving groove 51, the linkage 5 drives the driving shaft 3 inserted into the second driving shaft hole 52 to angularly deflect, thereby achieving the vibration effect, the power transmitted by the rotating shaft 1 reaches the driving shaft 3 through the linkage 5 and the dial shaft 6, the axis of the rotating shaft 1 can coincide with or approach the driving shaft 3 through the linkage 5 and the dial shaft 6, thereby making the vibration of the whole device more inclined to the central vertical line, making the vibration of the internal parts more uniform and small, which can further protect the internal parts, and the customer can use it more conveniently and comfortably.

[0059] Please refer to Figure 5 In some embodiments, the connecting piece 42 is provided with a stabilizing mechanism 7 for keeping the connecting piece 42 stably swing.

[0060] The application is provided with the stabilizing mechanism 7 for keeping the connecting piece 42 stably swing on the connecting piece 42, the stabilizing mechanism 7 can limit the connecting piece 42, reduce the amplitude of the connecting piece 42 in the swing process, improve the stability of the connecting piece 42 in the swing process, reduce the generation of noise, further delay the vibration of the internal parts, prolong the service life, and reduce the maintenance cost.

[0061] Please refer to Figures 5 to 8 In some embodiments, the stabilizing mechanism 7 comprises guide rods 71 extending outward on both sides of the swing direction of the connecting piece 42, or the stabilizing mechanism 7 comprises a pin hole 72 opened on the connecting piece 42 away from one end of the dial shaft 6 and a positioning pin rotatably inserted into the pin hole 72.

[0062] The application comprises guide rods 71 extending outward on both sides of the swing direction of the connecting piece 42 through the stabilizing mechanism 7, and guide holes are arranged on the shell, so that the guide rods 71 are inserted into the guide holes. When the insertion part 411 is located in the middle section of the first driving groove 421, the rotation of the insertion part 411 only drives the connecting piece 42 to reciprocate forward and backward in the same plane through the cooperation of the guide rods 71 and the guide holes, and no angle deflection occurs. Then, the connecting piece 42 drives the linkage 5 to perform angle deflection through the cooperation of the poking shaft 6 and the second driving groove 51, and then the driving shaft 3 performs angle deflection to achieve the vibration effect. The guide rods 71 can further delay the vibration of the internal parts, prolong the service life, reduce the maintenance cost, delay the vibration of the hand holding part of the personnel, and improve the comfort.

[0063] The application comprises a pin hole 72 located away from one end of the poking shaft 6 and arranged on the connecting piece 42, and a positioning pin rotatably inserted into the pin hole 72. The positioning pin penetrates through the pin hole 72 and the shell. When the rotating shaft 1 drives the insertion part 411 to rotate, the insertion part 411 drives the connecting piece 42 away from one end of the poking shaft 6 to reciprocate around the positioning pin through the cooperation of the first driving groove 421. The reciprocating connecting piece 42 drives the poking shaft 6 to drive the linkage 5 to perform angle deflection around the axis of the driving shaft 3 through the cooperation of the second driving groove 51, so that the axes of the rotating shaft 1 of the driving shaft 3 coincide or approach each other. Thus, the vibration of the internal parts can be further delayed, the service life is prolonged, the maintenance cost is reduced, the vibration of the hand holding part of the personnel is delayed, the comfort is improved, and the use of the internal space is further saved through the cooperation of the positioning pin and the pin hole 72, thereby improving the space utilization.

[0064] Please refer to Figures 5 to 8 In some embodiments, the stabilizing mechanism 7 is integrally formed on the connecting piece 42, or the stabilizing mechanism 7 is detachably installed on the connecting piece 42.

[0065] The application integrally forms the stabilizing mechanism 7 on the connecting piece 42, which can be integrally injection molded during injection molding, thereby saving the installation time, improving the installation efficiency, improving the connection strength between the connecting piece 42 and the stabilizing mechanism 7 through the integral molding, and prolonging the service life.

[0066] Please refer to Figures 1 to 5 In some embodiments, the stabilizing mechanism 7 is detachably installed on the connecting piece 42, and the stabilizing mechanism 7 can be installed on the connecting piece 42 through screw connection or through insertion. When the stabilizing mechanism 7 is worn out, the maintenance personnel can replace it in time, thereby reducing the maintenance cost and facilitating maintenance.

[0067] In some embodiments, the utility model also provides a motor toothbrush including above-mentioned vibration device, through install vibration device in motor toothbrush inside, then make drive shaft 3 with brush rod connect, through eccentric swing subassembly 4 between pivot 1 and drive shaft 3, eccentric swing subassembly 4 includes eccentric 41 and connecting piece 42, eccentric 41 is fixedly arranged on pivot 1, connecting piece 42 is fixedly arranged on drive shaft 3, pivot 1 drives eccentric 41 rotation, and is driven by eccentric 41 connecting piece 42 reciprocating swing to drive drive shaft 3 around its swing axis reciprocating rotation, pivot 1's rotation axis and drive shaft 3's swing axis are coaxial or parallel arrangement, when drive source 2 drives pivot 1 rotation, pivot 1 will drive eccentric 41 to rotate, because the axis of the connecting part of eccentric 41 and connecting piece 42 does not coincide with the axis of pivot 1, eccentric 41 will rotate around the axis of pivot 1 when rotating, rotating eccentric 41 will drive connecting piece 42 reciprocating angular rotation around the axis of drive shaft 3, and connecting piece 42 will drive the drive shaft 3 fixedly connected thereon reciprocating angular deflection around its own axis, through drive shaft 3 with brush rod connect, then drive shaft 3 will drive brush rod reciprocating angular deflection and achieve the effect of vibration, because eccentric swing subassembly 4 is the change of around type rotation into reciprocating angular deflection, around type rotation can reduce internal vibration, protect internal parts, and reciprocating angular deflection occurs at the front end of the whole device, away from internal parts, further play a protective role to internal parts, prolong the service life. In the whole running process in the device, only drive source 2 drives pivot 1 to rotate to achieve the effect of vibration, without frequently changing the direction of current, thereby reducing energy loss, reducing the power consumption of the whole device, without frequent charging, can be used for a long time, reduce the internal vibration frequency, can play a protective role to internal parts, prolong the service life.

[0068] It can be understood that the above embodiments only express the preferred embodiments of the utility model, and the description is more specific and detailed, but it cannot be understood as the limitation of the utility model patent scope; it should be pointed out that for ordinary skilled in the art, the above technical features can be freely combined without departing from the concept of the utility model, and some deformations and improvements can be made, which belong to the protection scope of the utility model; therefore, all equivalent transformations and modifications within the scope of the utility model claims should belong to the coverage of the utility model claims.

Claims

1. A vibration device for an electric toothbrush, comprising a drive source (2) having a rotation shaft (1) and a drive shaft (3), characterized in that, The vibration device further comprises an eccentric swing assembly (4) arranged between the rotating shaft (1) and the driving shaft (3); The eccentric swing assembly (4) comprises an eccentric part (41) and a connecting part (42), the eccentric part (41) is fixedly arranged on the rotating shaft (1), the connecting part (42) is fixedly arranged on the driving shaft (3), the rotating shaft (1) drives the eccentric part (41) to rotate, and the connecting part (42) is driven by the eccentric part (41) to swing reciprocatingly to drive the driving shaft (3) to rotate reciprocatingly around the swing axis of the driving shaft (3), and the rotating axis of the rotating shaft (1) is coaxial or parallel with the swing axis of the driving shaft (3).

2. A vibration device for an electric toothbrush according to claim 1, wherein A first driving groove (421) is arranged on the connecting part (42), the eccentric part (41) comprises a plug-in part (411) rotatably plugged in the first driving groove (421), and the plug-in part (411) is in a cylindrical shape; The length direction of the first driving groove (421) is perpendicular to the axis of the plug-in part (411); The axis of the plug-in part (41) is parallel to the axis of the rotating shaft (1) and does not coincide with the axis of the rotating shaft (1).

3. A vibration device for an electric toothbrush according to claim 2, wherein The eccentric part (41) is in a cylindrical shape, the upper part of the eccentric part (41) is the plug-in part (411), an eccentric hole (412) is arranged on the eccentric part (41) and used for fixing and plugging the rotating shaft (1), the axis of the eccentric hole (412) is parallel to the axis of the eccentric part (41) and does not coincide with the axis of the eccentric part (41), or Both ends of the eccentric part (41) are a connecting end (413) and a plug-in end (414), the connecting end (413) is provided with a shaft hole (415) used for fixing and plugging the rotating shaft (1), the plug-in end (414) is the plug-in part (411) and is rotatably plugged in the first driving groove (421), and the axis of the shaft hole (415) is parallel to the axis of the plug-in part (411) and does not coincide with the axis of the plug-in part (411).

4. A vibration device for an electric toothbrush according to claim 3, wherein The connecting part (42) is provided with a first driving shaft hole (422) used for fixing and plugging the driving shaft (3), and the first driving shaft hole (422) is located on one side of the first driving groove (421).

5. The vibration device for an electric toothbrush according to claim 3, wherein A gap is arranged between the plug-in part (411) and the two side ends in the first driving groove (421), or The plug-in part (411) is tangent to the side wall of the first driving groove (421).

6. The vibration device for an electric toothbrush according to claim 2, wherein The vibration device further comprises a linkage (5) and a dial shaft (6). The linkage (5) is provided with a second driving groove (51) and a second driving shaft hole (52) arranged on one side of the second driving groove (51), and the length direction of the second driving groove (51) is perpendicular to the axis of the plug-in part (411). One end of the dial shaft (6) is fixedly connected with the connecting part (42) and is swung by the connecting part (42), and the other end is slidably plugged in the second driving groove (51). The driving shaft (3) is fixedly plugged in the second driving shaft hole (52).

7. A vibration device for an electric toothbrush according to claim 6, wherein The connecting part (42) is provided with a stabilizing mechanism (7) used for stabilizing the swing of the connecting part (42).

8. The vibration device for an electric toothbrush according to claim 7, wherein The stabilizing mechanism (7) comprises guide rods (71) extending outward on both sides of the swinging direction of the connecting piece (42); or The stabilizing mechanism (7) comprises a pin hole (72) opened on the connecting piece (42) and located away from one end of the dial shaft (6), and a positioning pin rotatably inserted in the pin hole (72).

9. The vibration device for an electric toothbrush according to claim 7, characterized in that: The stabilizing mechanism (7) is integrally formed on the connecting piece (42); or the stabilizing mechanism (7) is detachably installed on the connecting piece (42).

10. An electric toothbrush characterized by comprising: The vibration device comprises the vibration device according to any one of claims 1 to 9.

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