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, a driving piece driven by the driving source to rotate, and a brush rod; a reciprocating assembly for driving the brush rod to reciprocate along the axis is arranged on the driving piece; the reciprocating assembly comprises a driving piece arranged on the driving piece and a driven piece arranged on the brush rod and matched with the driving piece. A meshing structure is arranged between the driving part and the driven part; when the driving piece drives the driving piece to rotate, the driven piece is driven by the meshing structure to reciprocate in the axis direction of the brush rod. The service life is prolonged, vibration of the brush head can be achieved by taking the one-way rotating motor as a driving source, and therefore the whole device is low in manufacturing cost, low in energy conversion loss rate, small in power consumption and capable of being continuously used for a long time, the charging frequency is reduced, and the service life of an internal storage battery 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 by energizing permanent magnet and electromagnet produce interaction, 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 solves its technical problems and adopts the technical scheme that constructs a vibrating device for electric toothbrush, including drive source, the driving piece rotation driven by drive source, and brush rod;Reciprocating assembly that drives the brush rod reciprocating motion along the axis is arranged on the driving piece;The reciprocating assembly includes the driving piece on the driving piece setting driving piece and the slave part that the brush rod sets up and cooperates with driving piece;Meshing structure is equipped between driving piece and slave part;When driving piece drives driving piece rotation, reciprocating motion in the brush rod axis direction of slave part is driven through meshing structure.

[0007] Further, the driving piece includes the output shaft rotation driven by the output end of drive source and the linkage shaft rotation driven by the output shaft, and the driving piece is arranged on the linkage shaft.

[0008] Further, the driving piece is the cam fixedly installed on the linkage shaft, and the axis of cam and the axis of linkage shaft form a set angle;The slave part is the rotating disc fixedly installed on the brush rod;The meshing structure includes the ring groove set up in the circumference of rotating disc and the meshing part in the ring groove of cam;

[0009] Or, the driving member is a rotating disc fixedly installed on the linkage shaft; the driven member is a cam fixedly installed on the brush rod, and an axis of the cam forms a set angle with an axis of the brush rod; the engagement structure comprises a ring groove arranged on a periphery of the rotating disc and an engagement part of the cam located in the ring groove.

[0010] Further, the driving member is a disc horizontally fixedly installed on the linkage shaft; the driven member is a round wheel horizontally fixedly installed on the brush rod; the engagement structure comprises an inclined ring groove arranged on a periphery of the round wheel and an engagement part of the disc located in the inclined ring groove.

[0011] Or, the driving member is a round wheel horizontally fixedly installed on the linkage shaft; the driven member is a disc horizontally fixedly installed on the brush rod; the engagement structure comprises an inclined ring groove arranged on a periphery of the round wheel and an engagement part of the disc located in the inclined ring groove.

[0012] Further, the cam is in a smooth S shape along a section of the brush rod axis.

[0013] Further, a rounded corner is arranged at an edge position of the cam.

[0014] Further, an eccentric assembly is arranged on the driving member, the eccentric assembly comprising an eccentric wheel arranged on the output shaft, a connecting block sleeved on the eccentric wheel, a racetrack-shaped groove arranged in the connecting block and matched with the eccentric wheel, the eccentric wheel being circular, and the connecting block being fixedly or detachably connected on the brush rod.

[0015] Further, a center of the eccentric wheel is not on a same vertical line with a center of the output shaft.

[0016] Further, the connecting block is in a racetrack shape, and the brush rod is installed at a same center position as an arc at one end of the racetrack-shaped groove.

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

[0018] The utility model discloses the following beneficial effects are had: through the driving element that rotates by the drive source and brush bar, the reciprocating component that drives the brush bar to reciprocate along the axis is arranged on the driving element, the reciprocating component includes the driving element on setting active piece and the driven piece that sets up with active piece mutual cooperation on the brush bar, and the meshing structure is equipped between active piece and driven piece, when driving element drives active piece to rotate, through meshing structure drives driven piece to reciprocate in the brush bar axis direction. Through meshing structure makes active piece always with driven piece between each other contact, reduces the energy loss, and the meshing structure between active piece and driven piece can active piece's rotary motion mode be converted into driven piece's up and down reciprocating mode, then again through driven piece drives the brush bar to reciprocate along its axis, reduces the vibration in the electric toothbrush, further prevents the loosening of internal parts, prolongs the service life, and the whole device is low in manufacturing cost, and energy conversion loss rate is low, and power consumption is little, can long time continuous use, reduces the number of times of charging, prolongs the service life of internal battery. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme of the utility model, the utility model will be further described below in conjunction with the drawings and examples, it should be understood that the following drawings only show some embodiments of the utility model, therefore should not be regarded as the limitation to the scope, for ordinary skilled person in the art, under the premise of not paying the creative labor, still can obtain other related drawings according to these drawings.

[0020] In the drawings:

[0021] Figure 1 It is the structural schematic diagram of electric toothbrush in some embodiments of the utility model;

[0022] Figure 2 It is the structural schematic diagram of vibrating device in some embodiments of the utility model;

[0023] Figure 3 It is the structural schematic diagram of reciprocating component;

[0024] Figure 4 It is the structural schematic diagram of meshing portion and inclined ring groove;

[0025] Figure 5 It is the section schematic diagram of eccentric component;

[0026] Figure 6 It is the section schematic diagram of cam.

[0027] Legend to the drawings

[0028] Driving source 1, driving part 2, output shaft 21, linkage shaft 22, brush rod 3, reciprocating assembly 4, driving part 41, cam 411, driven part 42, rotating disc 421, disc 412, round wheel 422, meshing structure 43, annular groove 431, meshing part 432, inclined annular groove 433, eccentric assembly 5, eccentric wheel 51, connecting block 52, racetrack-shaped groove 53. DETAILED DESCRIPTION

[0029] In order to have a clearer understanding of the technical features, objectives and effects of the present application, the specific embodiments of the present application will be described in detail with reference to the drawings. In the following description, it should be understood that the directions or positional relationships indicated by "front", "back", "upper", "lower", "left", "right", "vertical", "horizontal", "vertical", "horizontal", "top", "bottom", "inner", "outer", "head", "tail" and the like are based on the directions or positional relationships shown in the drawings, constructed and operated in a particular direction, and are only for the convenience of describing the technical solutions, and therefore cannot be understood as indicating that the devices or elements indicated must have a particular direction, thus cannot be understood as limiting the present application.

[0030] It should also be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing", "setting" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; 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 "below" another element, the element can be "directly" or "indirectly" above the other element, or there can be one or more intervening elements. 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 include 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.

[0031] In the following description, specific details such as specific system structures, techniques, etc. are presented in order to facilitate a thorough understanding of the embodiments of the present application. 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 descriptions of well-known systems, devices, circuits and methods are omitted to avoid unnecessary details that hinder the description of the present application.

[0032] Please refer to Figures 1 to 3The utility model discloses a vibrating device for the dynamic toothbrush of first embodiment, and the vibrating device includes drive source 1, the driving piece 2 of rotation of drive source 1 drive, and brush pole 3;Driving piece 2 is provided with reciprocating assembly 4 of driving brush pole 3 reciprocating along the axis;Reciprocating assembly 4 includes the driving piece 41 of setting on driving piece 2, and brush pole 3 is provided with the driven piece 42 of the cooperation with driving piece 41;Driving piece 41 and driven piece 42 between being equipped with meshing structure 43;Driving piece 2 drive driving piece 41 rotation, through meshing structure 43 drive driven piece 42 reciprocating in the axial direction of brush pole 3.

[0033] Wherein, drive source 1 includes motor or motor, can adopt general type's one-way rotation motor or motor. Further, drive source 1 still includes the battery for motor or motor provides power, and the battery and motor or motor between using electric connection, one-way rotation motor or motor sells cheap, reduces the manufacturing cost, and the technology is more mature, and it is convenient to maintain, and it is not easy to damage.

[0034] Wherein, driving piece 2 is the support piece of transmission connection with drive source 1, can be the support shaft or support rod of the power transmission of each other through gear set, can more reasonably utilize energy, reduce the loss of energy, and then reduce the volume of entire device, reduce manufacturing cost.

[0035] Wherein, driving piece 41 is fixedly arranged in driving piece 2, and driven piece 42 is fixedly arranged in brush pole 3, and driving piece 2 rotates and will drive driving piece 41 together, and driving piece 41 drive driven piece 42 reciprocating along the axial direction of brush pole 3 through meshing structure 43, and driven piece 42 drive brush pole 3 reciprocating along its axial direction, and brush pole 3 drive brush head repeated reciprocating motion reaches the effect of vibration.

[0036] When the whole vibrating device operates, the output end of drive source 1 drives driving piece 2 to rotate, driving piece 2 drives driving piece 41 fixedly connected thereon to rotate, and rotating driving piece 41 drives driven piece 42 to move up and down through meshing structure 43, and driven piece 42 moving up and down drives brush pole 3 to reciprocate along its axial direction to achieve the effect of vibration, so as to play a cleaning role on the inside of oral cavity.

[0037] The application drives the driving piece 2 and the brush rod 3 by the driving source 1, the driving piece 2 is provided with the reciprocating assembly 4 for driving the brush rod 3 to reciprocate along the axis, the reciprocating assembly 4 comprises the driving piece 41 arranged on the driving piece 2 and the driven piece 42 arranged on the brush rod 3 and matched with the driving piece 41, the engagement structure 43 is arranged between the driving piece 41 and the driven piece 42, when the driving piece 2 drives the driving piece 41 to rotate, the driven piece 42 is driven to reciprocate along the axis of the brush rod 3 through the engagement structure 43. The driving source 1 rotates in one direction, which is cheaper in cost, can save manufacturing cost, the engagement structure 43 makes the driving piece 41 always contact with the driven piece 42, reduces energy loss, the engagement structure 43 between the driving piece 41 and the driven piece 42 can convert the rotary motion of the driving piece 41 into the up-down reciprocating motion of the driven piece 42, then the brush rod 3 is driven to reciprocate along its axis by the driven piece 42, which reduces the vibration inside the electric toothbrush, prevents the internal parts from loosening, prolongs the service life, the one-way rotary motor is used as the driving source 1 to realize the vibration of the brush head, which is low in manufacturing cost, low in energy conversion loss rate, low in power consumption, can be used continuously for a long time, reduces the charging frequency, and prolongs the service life of the internal battery.

[0038] Please refer to Figure 2 and Figure 3 In some embodiments, the driving piece 2 comprises the output shaft 21 driven to rotate by the output end of the driving source 1 and the linkage shaft 22 driven to rotate by the output shaft 21, and the driving piece 41 is arranged on the linkage shaft 22.

[0039] The application drives the driving piece 2 and the brush rod 3 by the driving source 1, the driving piece 2 is provided with the reciprocating assembly 4 for driving the brush rod 3 to reciprocate along the axis, the reciprocating assembly 4 comprises the driving piece 41 arranged on the driving piece 2 and the driven piece 42 arranged on the brush rod 3 and matched with the driving piece 41, the engagement structure 43 is arranged between the driving piece 41 and the driven piece 42, when the driving piece 2 drives the driving piece 41 to rotate, the driven piece 42 is driven to reciprocate along the axis of the brush rod 3 through the engagement structure 43. The driving source 1 rotates in one direction, which is cheaper in cost, can save manufacturing cost, the engagement structure 43 makes the driving piece 41 always contact with the driven piece 42, reduces energy loss, the engagement structure 43 between the driving piece 41 and the driven piece 42 can convert the rotary motion of the driving piece 41 into the up-down reciprocating motion of the driven piece 42, then the brush rod 3 is driven to reciprocate along its axis by the driven piece 42, which reduces the vibration inside the electric toothbrush, prevents the internal parts from loosening, prolongs the service life, the one-way rotary motor is used as the driving source 1 to realize the vibration of the brush head, which is low in manufacturing cost, low in energy conversion loss rate, low in power consumption, can be used continuously for a long time, reduces the charging frequency, and prolongs the service life of the internal battery.

[0040] Please refer to Figure 2 and Figure 3In some embodiments, the driving member 41 is a cam 411 fixedly installed on the linkage shaft 22, the axis of the cam 411 is at a set angle with the axis of the linkage shaft 22, the driven member 42 is a rotating disc 421 fixedly installed on the brush rod 3, and the engagement structure 43 includes a ring groove 431 arranged on the periphery of the rotating disc 421 and an engagement part 432 of the cam 411 located in the ring groove 431.

[0041] Wherein, the brush rod 3 is perpendicular to the bottom end of the electric toothbrush shell, and the brush rod 3 slides and rotates on the electric toothbrush shell.

[0042] In some embodiments, the driving member 41 is a cam 411 fixedly installed on the linkage shaft 22, the axis of the cam 411 is at a set angle with the axis of the linkage shaft 22, the driven member 42 is a rotating disc 421 fixedly installed on the brush rod 3, and the engagement structure 43 includes a ring groove 431 arranged on the periphery of the rotating disc 421 and an engagement part 432 of the cam 411 located in the ring groove 431. When the linkage shaft 22 rotates, the driving member 41 in the form of the cam 411 fixedly connected thereto rotates together. The rotating cam 411 drives the driven member 42 in the form of the rotating disc 421 to reciprocate along the axis of the brush rod 3 through the cooperation between the engagement part 432 and the ring groove 431, so as to make the rotating disc 421 drive the brush rod 3 to reciprocate along its axis to achieve the vibration effect. In the whole vibration process, the driving source 1 only needs to rotate in one direction, thereby reducing internal vibration, energy loss rate, power consumption, and the number of charging, prolonging the service life of the internal battery.

[0043] On the contrary, in some embodiments, the driving member 41 is a rotating disc 421 fixedly installed on the linkage shaft 22, the driven member 42 is a cam 411 fixedly installed on the brush rod 3, the axis of the cam 411 is at a set angle with the axis of the brush rod 3, and the engagement structure 43 includes a ring groove 431 arranged on the periphery of the rotating disc 421 and an engagement part 432 of the cam 411 located in the ring groove 431.

[0044] The application is provided with a driving part 41, which is a rotating disc 421 fixedly installed on the linkage shaft 22; a driven part 42, which is a cam 411 fixedly installed on the brush rod 3, the axis of the cam 411 being at a set angle with the axis of the brush rod 3; and a meshing structure 43, which comprises a ring groove 431 arranged on the periphery of the rotating disc 421 and a meshing part 432 of the cam 411 located in the ring groove 431. The axis of the cam 411 is at a set angle with the axis of the brush rod 3, so that the cam 411 is fixedly installed on the brush rod 3 in an inclined manner. When the linkage shaft 22 rotates, the linkage shaft 22 drives the driving part 41 in the form of the rotating disc 421 to rotate, the rotating disc 421 drives the ring groove 431 to rotate, the ring groove 431 drives the cam 411 in the form of the driven part 42 to reciprocate along the axis of the brush rod 3 through the cooperation between the meshing part 432 of the cam 411 and the ring groove 431, the cam 411 drives the brush rod 3 to reciprocate along the axis thereof to achieve the vibration effect. During the whole vibration process, the driving source 1 only needs to rotate in one direction, thereby reducing the internal vibration, lowering the energy loss rate, reducing the power consumption, enabling long-time continuous use, reducing the charging frequency, and prolonging the service life of the internal battery.

[0045] Please refer to Figure 3 and Figure 4 In some embodiments, the driving part 41 is a disc 412 fixedly installed on the linkage shaft 22 in a horizontal manner, the driven part 42 is a round wheel 422 fixedly installed on the brush rod 3, and the meshing structure 43 comprises an inclined ring groove 433 arranged on the periphery of the round wheel 422 and a meshing part 432 of the disc 412 located in the inclined ring groove 433.

[0046] The application is provided with a driving part 41, which is a disc 412 fixedly installed on the linkage shaft 22 in a horizontal manner, a driven part 42, which is a round wheel 422 fixedly installed on the brush rod 3, and a meshing structure 43, which comprises an inclined ring groove 433 arranged on the periphery of the round wheel 422 and a meshing part 432 of the disc 412 located in the inclined ring groove 433. When the linkage shaft 22 rotates, the linkage shaft 22 drives the driving part 41 in the form of the disc 412 to rotate, the disc 412 drives the meshing part 432 to rotate, the rotating meshing part 432 drives the driven part 42 in the form of the round wheel 422 with the inclined ring groove 433 to reciprocate along the axis of the brush rod 3 through the cooperation between the meshing part 432 and the inclined ring groove 433, the round wheel 422 drives the brush rod 3 to reciprocate along the axis thereof to achieve the vibration effect. During the whole vibration process, the driving source 1 only needs to rotate in one direction, thereby reducing the internal vibration, lowering the energy loss rate, reducing the power consumption, enabling long-time continuous use, reducing the charging frequency, and prolonging the service life of the internal battery.

[0047] In some embodiments, the driving member 41 is a horizontal circular wheel 422 fixedly installed on the linkage shaft 22, the driven member 42 is a horizontal circular disc 412 fixedly installed on the brush rod 3, and the engagement structure 43 comprises an inclined ring groove 433 arranged on the periphery of the circular wheel 422 and an engagement part 432 of the circular disc 412 located in the inclined ring groove 433.

[0048] In some embodiments, the driving member 41 is a horizontal circular wheel 422 fixedly installed on the linkage shaft 22, the driven member 42 is a horizontal circular disc 412 fixedly installed on the brush rod 3, and the engagement structure 43 comprises an inclined ring groove 433 arranged on the periphery of the circular wheel 422 and an engagement part 432 of the circular disc 412 located in the inclined ring groove 433. Rotation of the linkage shaft 22 drives the driving member 41 in the form of the circular wheel 422 to rotate, which drives the inclined ring groove 433 to rotate. The reciprocal movement of the driven member 42 along the axis of the brush rod 3 is realized by the cooperation between the engagement part 432 and the inclined ring groove 433. The circular disc 412 drives the brush rod 3 to reciprocate along its axis to achieve the vibration effect. The horizontal installation of the circular wheel 422 and the circular disc 412 can reduce the torsion of the linkage shaft 22 during rotation, prevent deformation of the linkage shaft 22 during rotation, and thus the entire vibration process only requires the driving source 1 to rotate in one direction, reducing internal vibration, energy loss, power consumption, and the number of charging times, prolonging the service life of the internal battery.

[0049] Please refer to Figure 6 In some embodiments, the cam 411 is in a smooth S shape along the cross section of the axis of the brush rod 3.

[0050] In some embodiments, the cam 411 is in a smooth S shape along the cross section of the axis of the brush rod 3. The smooth S-shaped cam 411 can reduce the wear of the rotating disc 421 during rotation, making the cam 411 more stable during rotation, reducing the torque of the linkage shaft 22, and thus prolonging the service life of the entire device, reducing internal vibration, and improving stability.

[0051] Please refer to Figure 3 In some embodiments, the edge of the cam 411 is provided with a round corner.

[0052] In some embodiments, the edge of the cam 411 is provided with a round corner. The round corner can reduce the contact area between the cam 411 and the rotating disc 421, reduce the scratching of the rotating disc 421 by the cam 411 during rotation, and thus reduce the wear of the rotating disc 421, make the cam 411 more stable during rotation, prolong the service life of the entire device, reduce internal vibration, and improve stability.

[0053] Please refer toFigure 3 and Figure 5 In some embodiments, the driving member 2 is provided with an eccentric assembly 5, the eccentric assembly 5 includes an eccentric wheel 51 arranged on the output shaft 21, a connecting block 52 is sleeved on the eccentric wheel 51, a track-shaped groove 53 cooperating with the eccentric wheel 51 is arranged in the connecting block 52, the eccentric wheel 51 is circular, and the connecting block 52 is fixedly or detachably connected to the brush rod 3.

[0054] The application sets the driving member 2 with the eccentric assembly 5, the eccentric assembly 5 includes the eccentric wheel 51 arranged on the output shaft 21, the connecting block 52 is sleeved on the eccentric wheel 51, the track-shaped groove 53 cooperating with the eccentric wheel 51 is arranged in the connecting block 52, the eccentric wheel 51 is circular, and the connecting block 52 is fixedly or detachably connected to the brush rod 3. The brush rod 3 can be connected to the connecting block 52 by screwing or inserting, and then the connecting block 52 and the brush rod 3 are kept relatively stationary by the jack. When the output shaft 21 rotates, the eccentric wheel 51 rotates together. The eccentric wheel 51 is circular, and the rotating eccentric wheel 51 rotates at one end of the track-shaped groove 53 of the connecting block 52. The other end of the connecting block 52 is installed on the brush rod 3, so that the brush rod 3 and the connecting block 52 are kept relatively stationary. The brush rod 3 is limited by the shell of the electric toothbrush, so that the brush rod 3 can only move up and down and rotate along the shell of the electric toothbrush. When the eccentric wheel 51 rotates, the eccentric wheel 51 drives the connecting block 52 through the track-shaped groove 53. Since the other end of the connecting block 52 is limited by the brush rod 3, the driven connecting block 52 can only be angularly deflected around the center of the brush rod 3, so that the connecting block 52 is converted between inclined and horizontal. Since the brush rod 3 and the connecting block 52 are kept relatively stationary, when the connecting block 52 is inclined, the connecting block 52 drives the brush rod 3 at the other end to rotate forward around the center of the brush rod 3. When the connecting block 52 is horizontal, the connecting block 52 drives the brush rod 3 at the other end to rotate reversely around the center of the brush rod 3. Through the rotation of the eccentric wheel 51 in one direction, the connecting block 52 drives the brush rod 3 to reciprocally angularly deflect around the center of the brush rod 3, and then the brush rod 3 drives the brush head to repeatedly angularly deflect, achieving the vibration effect and being able to more thoroughly clean the oral cavity.

[0055] In some embodiments, since the eccentric wheel 51 is circular, the connecting block 52 is sleeved on the eccentric wheel 51. When the driving source 1 is started, the driving shaft 22 drives the driving piece 41 to rotate, and through the meshing structure 43 between the driving piece 41 and the driven piece 42, the driven piece 42 is driven to reciprocate in the axial direction of the brush rod 3, so as to realize the reciprocating movement of the brush rod 3 in the axial direction. At the same time, the output shaft 21 drives the eccentric wheel 51 to rotate, and the rotating eccentric wheel 51 drives the connecting block 52 to deflect in angle around the center of the brush rod 3 through the cooperation with the track-shaped groove 53, and then the connecting block 52 drives the brush rod 3 to reciprocate in angle, and at the same time, the brush rod 3 reciprocating in the axial direction drives the connecting block 52 to reciprocate in the axial direction, and then the brush rod 3 can reciprocate in angle around the center of the brush rod 3 while reciprocating in the axial direction, so that the brush head at the top of the brush rod 3 can reciprocate in angle around the center of the brush rod 3 while reciprocating in the axial direction of the brush rod 3, further achieving the vibration effect, and more thoroughly cleaning the oral cavity and improving the cleaning efficiency.

[0056] Please refer to Figure 2 and Figure 3 In some embodiments, the center of the eccentric wheel 51 and the axis of the output shaft 21 do not coincide with each other.

[0057] In some embodiments, the center of the eccentric wheel 51 and the axis of the output shaft 21 do not coincide with each other.

[0058] Please refer to Figure 3 and Figure 5 In some embodiments, the connecting block 52 is track-shaped, and the brush rod 3 is installed at the same center position as the one end arc of the track-shaped groove 53.

[0059] The application sets the connecting block 52 as a runway shape, the brush rod 3 is installed at the same center position as the one end arc of the runway-shaped groove 53, the runway-shaped connecting block 52 has a fixed proportion with the runway-shaped groove 53, the runway-shaped connecting block 52 can maximize the use of materials, and can also reduce the area passed by the connecting block 52 when the angle is deflected, thereby saving the internal space, the brush rod 3 is installed at the same center position as the one end arc of the runway-shaped groove 53, the eccentric wheel 51 is sleeved in the runway-shaped groove 53, so that when the eccentric wheel 51 is deflected at the other end of the connecting block 52, the brush rod 3 at one end of the connecting block 52 will be deflected with the connecting block 52, thereby achieving a larger vibration frequency and improving the cleaning ability, the eccentric wheel 51 sleeved in the runway-shaped groove 53 has a gap between the two end arcs of the runway-shaped groove 53, so that the eccentric wheel 51 will not be deflected to the arc position of the runway-shaped groove 53 when the connecting block 52 is deflected, thereby preventing the eccentric wheel 51 from driving the connecting block 52 away from the brush rod 3, and the movement is more stable, thereby saving the internal space.

[0060] Please refer to Figures 1 to 5 The application provides an electric toothbrush.

[0061] The vibration device of the electric toothbrush comprises a driving part 2 driven by a driving source 1 and a brush rod 3, the driving part 2 is provided with a reciprocating assembly 4 for driving the brush rod 3 to reciprocate along an axis, the reciprocating assembly 4 comprises a driving part 41 arranged on the driving part 2 and a driven part 42 arranged on the brush rod 3 and matched with the driving part 41, and a meshing structure 43 is arranged between the driving part 41 and the driven part 42, so that the driving part 41 drives the driven part 42 to reciprocate along the axis of the brush rod 3 through the meshing structure 43 when the driving part 2 rotates. The one-way rotating driving source 1 is cheaper in cost and can save manufacturing cost, the meshing structure 43 ensures that the driving part 41 is always in contact with the driven part 42, thereby reducing energy loss, the meshing structure 43 between the driving part 41 and the driven part 42 can convert the rotary motion of the driving part 41 into the up-down reciprocating motion of the driven part 42, and then the driven part 42 drives the brush rod 3 to reciprocate along the axis thereof, thereby reducing the vibration of the electric toothbrush, preventing the internal parts from loosening, prolonging the service life, and realizing the vibration of the brush head through the one-way rotating motor as the driving source 1, thereby reducing the manufacturing cost of the whole device, reducing the energy conversion loss rate, reducing the power consumption, enabling long-time continuous use, reducing the charging frequency, and prolonging the service life of the internal battery.

[0062] It can be understood that the above embodiments only express the preferred embodiments of the utility model, the description is more specific and detailed, but it can not be understood as the limitation of the utility model patent scope; it should be pointed out that for ordinary skilled person in the art, the above technical features can be freely combined without departing from the concept of the utility model, and a number of modifications and improvements can be made, which belong to the protection scope of the utility model; therefore, any equivalent transformation and modification within the scope of the utility model patent claim should belong to the scope of the utility model patent claim.

Claims

1. A vibration device for an electric toothbrush, characterized in that: The utility model provides a kind of brush bar driving device, including driving source (1), driven member (2) rotated by the driving source (1), and brush bar (3);Reciprocating component (4) that drives the brush bar (3) reciprocates along axis is provided on the driven member (2); The reciprocating component (4) includes a driving element (41) provided on the driven member (2), and a driven element (42) provided on the brush bar (3) and cooperating with the driving element (41); The engagement structure (43) is provided between the driving element (41) and the driven element (42);When the driven member (2) drives the driving element (41) to rotate, the driven element (42) is driven to reciprocate in the axis direction of the brush bar (3) by the engagement structure (43).

2. A vibration device for an electric toothbrush according to claim 1, wherein The driven member (2) includes an output shaft (21) driven to rotate by the output end of the driving source (1), and a linkage shaft (22) driven to rotate by the output shaft (21), and the driving element (41) is provided on the linkage shaft (22).

3. A vibration device for an electric toothbrush according to claim 2, wherein The driving element (41) is a cam (411) fixedly installed on the linkage shaft (22), and the axis of the cam (411) forms a set angle with the axis of the linkage shaft (22);The driven element (42) is a rotating disc (421) fixedly installed on the brush bar (3); The engagement structure (43) includes a ring groove (431) provided on the periphery of the rotating disc (421), and an engagement part (432) of the cam (411) located in the ring groove (431); Alternatively, the driving element (41) is a rotating disc (421) fixedly installed on the linkage shaft (22);The driven element (42) is a cam (411) fixedly installed on the brush bar (3), and the axis of the cam (411) forms a set angle with the axis of the brush bar (3); The engagement structure (43) includes a ring groove (431) provided on the periphery of the rotating disc (421), and an engagement part (432) of the cam (411) located in the ring groove (431).

4. The vibration device for an electric toothbrush according to claim 2, wherein The driving element (41) is a disc (412) fixedly installed horizontally on the linkage shaft (22);The driven element (42) is a circular wheel (422) fixedly installed horizontally on the brush bar (3); The engagement structure (43) includes an inclined ring groove (433) provided on the periphery of the circular wheel (422), and an engagement part (432) of the disc (412) located in the inclined ring groove (433); Alternatively, the driving element (41) is a circular wheel (422) fixedly installed horizontally on the linkage shaft (22);The driven element (42) is a disc (412) fixedly installed horizontally on the brush bar (3); The engagement structure (43) includes an inclined ring groove (433) provided on the periphery of the circular wheel (422), and an engagement part (432) of the disc (412) located in the inclined ring groove (433).

5. The vibration device for an electric toothbrush according to claim 3, wherein The cam (411) is smooth S-shaped along the cross section of the brush bar (3) axis.

6. The vibration device for an electric toothbrush according to claim 3, wherein The cam (411) is provided with a rounded corner at the edge position.

7. The vibration device for an electric toothbrush according to claim 2, wherein The eccentric assembly (5) is arranged on the driving member (2), and the eccentric assembly (5) comprises an eccentric wheel (51) arranged on the output shaft (21), and a connecting block (52) is sleeved on the eccentric wheel (51), and a runway-shaped groove (53) matched with the eccentric wheel (51) is arranged in the connecting block (52), the eccentric wheel (51) is circular, and the connecting block (52) is fixedly or detachably connected on the brush rod (3).

8. The vibration device for an electric toothbrush according to claim 7, wherein The center of the eccentric wheel (51) and the axis of the output shaft (21) are not coincident with each other.

9. The vibration device for an electric toothbrush according to claim 7, wherein The connecting block (52) is runway-shaped, and the brush rod (3) is installed at the same center position as an arc at one end of the runway-shaped groove (53).

10. An electric toothbrush characterized by comprising: The vibration device comprises the brush rod (3) and the driving member (2) as claimed in any one of claims 1 to 9.

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