CN206211815U - Driving device for electric toothbrush - Google Patents

Abstract

The utility model provides a kind of driving device for electric toothbrush, including motor vibrator, oscillator fixed mount, motor stator and power transmission shaft；Oscillator fixed mount includes the first fixed mount and the second fixed mount that are connected by screw；Motor vibrator is installed between the first fixed mount and the second fixed mount；First limiting plate that is connected, first connecting plate and second limiting plate of first fixed mount including the structure that takes the shape of the letter U, threeth limiting plate, second connecting plate and fourth limiting plate that are connected of second fixed mount including the structure that takes the shape of the letter U, the bottom of motor vibrator is centered around on the copper coil of stator, and power transmission shaft is connected with the top of motor vibrator.The oscillator fixed mount of this patent, can be attached with motor vibrator securely, motor vibrator is enclosed in inside oscillator fixed mount, be more convenient for being assembled between oscillator fixed mount outer wall and toothbrush body, oscillator fixed mount can effectively buffer the vibration force produced during motor operations, improve shock-absorbing function.

Description

Driving device for electric toothbrush

Technical field

The utility model is related to toothbrush drive technical field, more particularly, to a kind of driving device for electric toothbrush.

Background technology

The motor of existing electric toothbrush is, by the principle of nuclear magnetic resonance, to use the resonance machine of the motor with rotating armature Structure, it this have the advantage that design simply and reasonable price.

Its primary structure has electric circle (being connected with the electrified coil of alternating current) and the permanent magnet group being arranged on above electric circle Part (i.e. permanent magnet assembly is specifically made up of two permanent magnetic iron blocks around rotary shaft)；After electrified coil is connected with alternating current, its meeting Produce the magnetic field of change；After the magnetic direction of electrified coil produces N, S magnetic pole to be continually changing, the permanent magnet above electrified coil Component can receive the magnetic fields of vertical direction, and permanent magnet assembly can be produced at the vertical top position of electrified coil around rotary shaft Raw reciprocating rotation by a small margin, eventually through bolt arrangement in rotary shaft, by rotational action, (resting period i.e. suitable, counterclockwise turns It is dynamic) pass to the action that brush is realized brushing teeth；It is obvious that still there is such as lower section in the motor product in above-mentioned electric toothbrush The technological deficiency in face：The area very little of magnet piece, magnetic action does not cause finally the motor product of electric toothbrush to be short of power by force Problem.

Therefore, the present inventor devises one kind in the patent of Application No. 201510629443.1 applying in electric toothbrush In motor, the motor can be very good to solve the problems, such as being short of power for product；But in application process, invention human hair Existing, the motor is to be fixed using Nian Jie or encryption seal with the housing of electric toothbrush, that is to say, that the motor is direct with housing Contacted, produce vibrations excessive with housing in motor starting, and use rear motor easily to produce disengaging with housing for a long time, Influence is normally used.

Therefore, the defect for how overcoming connection and the vibrations of motor product and toothbrush body in above-mentioned electric toothbrush is ability Field technique personnel technical problem urgently to be resolved hurrily.

Utility model content

In order to solve the above-mentioned technical problem, the utility model provides a kind of driving device for electric toothbrush.

A kind of driving device for electric toothbrush disclosed in the utility model, including motor vibrator, oscillator fixed mount, motor stator And power transmission shaft；

The motor vibrator includes that plastics locating rack, metal locating rack, plastics resonance plate, metal turn energy piece and permanent magnet Block；The plastics locating rack both ends are wrapped on the outer surface of cupular part of the metal locating rack, positioned at the plastics locating rack Cavity that is interior and being located at simultaneously at the top of the metal locating rack is the first cavity；Immediately below the plastics locating rack and simultaneously Cavity in the metal locating rack is the second cavity；

The plastics resonance plate is provided with first cavity and metal turns energy piece, the metal turns can piece and the modeling Material resonance plate is vertically fixedly connected；The metal turns energy piece both ends and is connected with plastics locating rack inner side, the plastics resonance plate Both sides be respectively arranged with multiple open slots；The power transmission shaft is fixed on the top of the plastics locating rack, two block permanent magnet blocks It is fixedly connected on the inner side of the metal locating rack；And the permanent magnet assembly of two permanent magnetic iron block compositions is centered around the motor and determines The left and right sides of son；

The oscillator fixed mount includes the first fixed mount and the second fixed mount that are connected by screw, first fixed mount The first limiting plate being connected, the first connecting plate and the second limiting plate including the structure that takes the shape of the letter U, first limiting plate and second Limiting plate inner side is equipped with the first groove for clamp plastics resonance plate, and on first limiting plate and the second limiting plate the The locating dowel for open slot described in clamp is provided with one groove；

Threeth limiting plate that is connected of second fixed mount including the structure that takes the shape of the letter U, the second connecting plate and the 4th are spacing Plate, the 3rd limiting plate and the 4th limiting plate are provided with the location hole for accommodating the locating dowel.

Further, the motor stator includes：Iron core, coil plastic processing frame, copper coil；The coil plastic processing frame is H Shape structure, is internally provided with the draw-in groove for accommodating the iron core, also, the side of the iron core stretches out in the H-shaped knot The outside of the side shield of coil plastic processing frame two of structure, the copper coil is looped around on the coil plastic processing frame；The motor vibrator Bottom be centered around on the copper coil exposed on the coil plastic processing frame.

Further, the plastics locating rack is the closing plastic structural part with rectangular enclosure, the plastics locating rack Profile entirety rectangular shaped.

Further, it is provided with multiple for mounting screw in the first groove on first limiting plate and the second limiting plate Screw, the position of the screw is corresponding with the open slot position on the plastics resonance plate.

Further, the 3rd limiting plate and the 4th limiting plate are provided with multiple stepped holes for mounting screw, institute The position for stating stepped hole is corresponding with the open slot position on the plastics resonance plate.

Further, it is respectively provided with the deep-slotted chip breaker for installing bearing on first connecting plate and the second connecting plate.

Further, bearing is set with the power transmission shaft, the bearing is arranged in the deep-slotted chip breaker.

Further, the depth of the first groove on first limiting plate and the second limiting plate resonates equal to the plastics The thickness of piece.

Further, the side of the plastics locating rack is provided with TPE flexible glues layer.

Further, it is cast iron piece that the metal turns energy piece；The power transmission shaft is stainless steel structure part or cast-iron structure Part.

Using above-mentioned technical proposal, the technique effect that the utility model is produced has：

Using the oscillator fixed mount being made up of the first fixed mount and the second fixed mount of this patent, not only can securely with Motor vibrator part is attached, and motor vibrator can be enclosed in the oscillator of the first fixed mount and the second fixed mount composition Inside fixed mount, it is more convenient for being assembled between oscillator fixed mount outer wall and toothbrush body, specifically can be corresponding in toothbrush body Inwall set positive stop strip, oscillator fixed mount is carried out it is spacing, when preventing motor operations motor stator produce it is larger rocks, In addition, the oscillator fixed mount of the first fixed mount and the second fixed mount composition can effectively buffer the vibration produced during motor operations Power, improves shock-absorbing function.

Brief description of the drawings

In order to illustrate more clearly of the utility model specific embodiment or technical scheme of the prior art, below will be right The accompanying drawing to be used needed for specific embodiment or description of the prior art is briefly described, it should be apparent that, describe below In accompanying drawing be some implementation methods of the present utility model, for those of ordinary skill in the art, do not paying creativeness On the premise of work, other accompanying drawings can also be obtained according to these accompanying drawings.

The structural representation of the driving device for electric toothbrush that Fig. 1 is provided for the utility model；

Fig. 2 is the structural representation of oscillator and the assembling of oscillator fixed mount；

Fig. 3 is the side view of Fig. 2；

Fig. 4 is the structural representation of motor vibrator；

Fig. 5 is the structural representation of the first fixed mount；

Fig. 6 is the structural representation of the second fixed mount；

Fig. 7 is the structural representation of motor stator.

Reference：

1- motor vibrators；2- oscillator fixed mounts；3- motor stators；4- power transmission shafts；5-TPE flexible glues layer；11- plastics are positioned Frame；12- metal locating racks；13- plastics resonance plates；14- metals turn can piece；15- permanent magnetic iron blocks；131- open slots；21- first consolidates Determine frame；The fixed mounts of 22- second；The limiting plates of 211- first；The connecting plates of 212- first；The limiting plates of 213- second；The grooves of 214- first； 215- locating dowels；216- screws；The limiting plates of 221- the 3rd；The connecting plates of 222- second；The limiting plates of 223- the 4th；224- location holes； 225- stepped holes；226- deep-slotted chip breakers；31- iron cores；32- coil plastic processing frames；33- copper coils.

Specific embodiment

The technical solution of the utility model is clearly and completely described below in conjunction with accompanying drawing, it is clear that described Embodiment is a part of embodiment of the utility model, rather than whole embodiments.Based on the embodiment in the utility model, this The every other embodiment that field those of ordinary skill is obtained under the premise of creative work is not made, belongs to this practicality Novel protected scope.

It is term " " center ", " on ", D score, "left", "right", " perpendicular, it is necessary to explanation in description of the present utility model Directly ", the orientation or position relationship of the instruction such as " level ", " interior ", " outward " are, based on orientation shown in the drawings or position relationship, to be only Described with simplified for the ease of description the utility model, must had rather than the device or element for indicating or implying meaning specific Orientation, with specific azimuth configuration and operation, therefore it is not intended that to limitation of the present utility model.Additionally, term " the One ", " second ", " the 3rd " are only used for describing purpose, and it is not intended that indicating or implying relative importance.

Refer to Fig. 1 to Fig. 3；

A kind of driving device for electric toothbrush disclosed in the utility model, including motor vibrator 1, oscillator fixed mount 2, motor are fixed Son 3 and power transmission shaft 4；

Refer to Fig. 4；Motor vibrator 1 includes that plastics locating rack 11, metal locating rack 12, plastics resonance plate 13, metal turn Can piece 14 and permanent magnetic iron block 15；

The both ends of plastics locating rack 11 are wrapped on the outer surface of cupular part of the metal locating rack 12, fixed positioned at the plastics The cavity for being located in the frame 11 of position and simultaneously the top of the metal locating rack 12 is the first cavity；Positioned at the plastics locating rack 11 just Lower section and the simultaneously cavity in the metal locating rack 12 are the second cavity；

Be provided with first cavity plastics resonance plate 13 and metal turn can piece 14, the metal turn can piece 14 with The plastics resonance plate 13 is vertically fixedly connected；Metal turns the energy both ends of piece 14 and is connected with the inner side of plastics locating rack 11, and plastics are common The shake both sides of piece 13 are respectively arranged with multiple open slots 131；Power transmission shaft 4 is fixed on the top of the plastics locating rack 11, two pieces Permanent magnetic iron block 15 is fixedly connected on the inner side of the metal locating rack 12；And the permanent magnet assembly of two compositions of permanent magnetic iron block 15 is enclosed It is wound on the left and right sides of the motor stator 3；

Refer to Fig. 5；Oscillator fixed mount 2 includes the first fixed mount 21 and the second fixed mount 22 that are connected by screw, the One first limiting plate 211 that is connected, first connecting plate 212 and second limiting plate 213 of the fixed mount 21 including the structure that takes the shape of the letter U, By the whole installation of the first fixed mount 21 for the purpose of U-shaped structure is that opening in the middle part of it is easily installed plastics locating rack 11；Also, The first groove 214 for clamp plastics resonance plate 13, institute are equipped with the first limiting plate 211 and the inner side of the second limiting plate 213 State and be provided with for opening on clamp plastics resonance plate 13 in the first groove 214 on the first limiting plate 211 and the second limiting plate 213 The locating dowel 215 of mouth groove 131；

Refer to Fig. 6；Second threeth limiting plate 221, second connecting plate that are connected of the fixed mount 22 including the structure that takes the shape of the letter U 222 and the 4th limiting plate 223, by the whole installation of the second fixed mount 22 for the purpose of U-shaped structure is identical with the first fixed mount 21, together Sample is that the opening in the middle part of it is easily installed plastics locating rack 11；It is provided with 3rd limiting plate 221 and the 4th limiting plate 223 Location hole 224 for accommodating locating dowel 215.

Used as a preferred embodiment, plastics locating rack 11 is the closing plastic structural part with rectangular enclosure, and plastics are fixed The profile entirety rectangular shaped of position frame 11.

Refer to Fig. 5 and Fig. 6；As a preferred embodiment, on the first limiting plate 211 and the second limiting plate 213 Multiple screws 216 for mounting screw are provided with one groove 214, also, on the position and plastics resonance plate 13 of screw 216 The position of open slot 131 is corresponding, during in order to mounting screw, to modeling in the open slot 131 that screw is fallen on plastics resonance plate 13 Material resonance plate 13 carries out spacing.

Refer to Fig. 1 and Fig. 6；Used as a preferred embodiment, the 3rd limiting plate 221 and the 4th limiting plate 223 are provided with Multiple for mounting screw stepped holes 225, the position phase of open slot 131 on the position of stepped hole 225 and plastics resonance plate 13 Correspondence.The purpose for setting stepped hole 225 is screw is goed deep into the 3rd limiting plate 221 and the 4th limiting plate 223, places spiral shell The head of nail exposes to install fixed mount with the cooperation of the housing of toothbrush and impacts.

As a preferred embodiment, installation axle is respectively provided with the first connecting plate 212 and the second connecting plate 222 The deep-slotted chip breaker 226 for holding, bearing is set with power transmission shaft 4, and the bearing is arranged in above-mentioned deep-slotted chip breaker 226.

As a preferred embodiment, the depth of the first groove 214 on the first limiting plate 211 and the second limiting plate 213 Equal to the thickness of plastics resonance plate 13；So that plastics resonance plate 13 can be fully mounted in the first groove 214, then using Three limiting plates 221 and the spiral-lock of the 4th limiting plate 223 are fixed on the top of plastics resonance plate 13 to plastics resonance plate 13.

Used as a preferred embodiment, it is cast iron piece that the metal turns energy piece 14；Power transmission shaft 4 be stainless steel structure part or Cast-iron structure part.

Used as a preferred embodiment, the side of the plastics locating rack 11 is provided with TPE flexible glues layer 5.

It should be noted that motor is in high-speed cruising, because the strength of electromagnetic conversion is than larger, while causing internal drive Dynamic structure, drive mechanism vibration are all than larger, therefore plastics locating rack 11 and metal locating rack 12 may be in whole casing bodies Firm fixation cannot be realized；Plastics locating rack 11 and metal locating rack 12 rock it and strike whole casing due to having simultaneously Internal wall will necessarily cause larger vibration, can feel to compare vibration when causing Client handheld handle, while it strikes whole machine Housing also can produce damage to housing；So total design when, for Consumer's Experience, it is necessary to consider reduce vibrations and The problem of noise.

Using the above-mentioned oscillator fixed mount 2 being made up of the first fixed mount 21 and the second fixed mount 22, not only can be firm Ground is attached with the part of motor vibrator 1, and motor vibrator 1 can be enclosed in into the first fixed mount 21 and the second fixed mount 22 Inside the oscillator fixed mount 2 of composition, it is more convenient for being assembled between the outer wall of oscillator fixed mount 2 and toothbrush body, specifically can be The corresponding inwall of toothbrush body sets positive stop strip, oscillator fixed mount is carried out spacing, and motor stator 3 is produced when preventing motor operations Larger rocks, in addition, the oscillator fixed mount 2 of the first fixed mount 21 and the composition of the second fixed mount 22 can effectively buffer motor The vibration force produced during work, improves shock-absorbing function.

In concrete case, noise is mainly derived from whole transfer structure and is collided with machine shell in motion, Yi Jiyong The noise occurred during magnet assembly high-speed rotation.Solution is mainly (will plastics locating rack 11 using quadric injection mould technology With the integrated injection molding of metal locating rack 12；Again by the layer injection moulding of TPE flexible glues upper), in locating rack (i.e. plastics locating rack 11 And metal locating rack 12 etc.) key position increase the TPE flexible glues of 3mm thickness, as vibration absorbing usage.It will be apparent that above-mentioned TPE Flexible glue layer serves shock absorbing effect well.The impulsive force of locating rack and whole casing body collision rift is reduced in TPE flexible glues layer Meanwhile, it also reduces the frictional impact equivalent damage of whole casing body, product service life is increased indirectly, and ensure that product Structural stability and reliability.

It should be noted that the good hand touch elasticity of TPE is good, artificial rubber is commonly called as, its intensity and weatherability are compared with latex All more protruded Deng other performances.

In this patent, the structure of motor stator 3 should with the one kind disclosed in the patent of Application No. 201510629443.1 Motor configuration in electric toothbrush is similar to；Specifically：

Refer to Fig. 7；Motor stator of the present utility model 3 includes：Iron core 31, coil plastic processing frame 32, copper coil 33；Institute Coil plastic processing frame 32 is stated for H-shaped structure, the draw-in groove for accommodating iron core 31 is internally provided with；Also, the side of the iron core 31 32 liang of outsides of side shield of coil plastic processing frame of the H-shaped structure are stretched out in, the copper coil 33 is looped around the coil On plastic processing frame 32；The bottom of the motor vibrator 1 is centered around on the copper coil 33 exposed on the coil plastic processing frame.

The copper coil 33 that the left and right sides that the bottom of motor vibrator of the present utility model 1 is centered around the stator is exposed On.

, it is necessary to explanation, unless otherwise clearly defined and limited, term " is pacified in description of the present utility model Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected, or be detachably connected, or integratedly Connection；Can mechanically connect, or electrically connect；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, Can be two connections of element internal.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition Concrete meaning of the language in the utility model.

Finally it should be noted that：Various embodiments above is only used to illustrate the technical solution of the utility model, rather than it is limited System；Although being described in detail to the utility model with reference to foregoing embodiments, one of ordinary skill in the art should Understand：It can still modify to the technical scheme described in foregoing embodiments, or to which part or whole Technical characteristic carries out equivalent；And these modifications or replacement, the essence of appropriate technical solution is departed from this practicality newly The scope of each embodiment technical scheme of type.

Claims (10)

1. a kind of driving device for electric toothbrush, it is characterised in that：Including motor vibrator, oscillator fixed mount, motor stator and transmission Axle；

The motor vibrator includes that plastics locating rack, metal locating rack, plastics resonance plate, metal turn energy piece and permanent magnetic iron block；Institute Plastics locating rack both ends are stated to be wrapped on the outer surface of cupular part of the metal locating rack, it is in the plastics locating rack and same When cavity at the top of the metal locating rack be the first cavity；It is located at immediately below the plastics locating rack and simultaneously institute It is the second cavity to state the cavity in metal locating rack；

The plastics resonance plate is provided with first cavity and metal turns energy piece, it is common with the plastics that the metal turns energy piece The piece that shakes vertically is fixedly connected；The metal turns energy piece both ends and is connected with plastics locating rack inner side, and the two of the plastics resonance plate Side is respectively arranged with multiple open slots；The power transmission shaft is fixed on the top of the plastics locating rack, and two block permanent magnet blocks are fixed It is connected to the inner side of the metal locating rack；And the permanent magnet assembly of two permanent magnetic iron block compositions is centered around the motor stator The left and right sides；

The oscillator fixed mount includes the first fixed mount and the second fixed mount that are connected by screw, and first fixed mount includes First limiting plate being connected of the structure that takes the shape of the letter U, the first connecting plate and the second limiting plate, first limiting plate and second spacing Plate inner side is equipped with the first groove for clamp plastics resonance plate, and first on first limiting plate and the second limiting plate is recessed The locating dowel for open slot described in clamp is provided with groove；

Threeth limiting plate, second connecting plate and fourth limiting plate that are connected of second fixed mount including the structure that takes the shape of the letter U, institute State the 3rd limiting plate and the 4th limiting plate is provided with location hole for accommodating the locating dowel.

2. driving device for electric toothbrush according to claim 1, it is characterised in that：The motor stator includes：Iron core, line Circle plastic processing frame, copper coil；The coil plastic processing frame is H-shaped structure, is internally provided with the draw-in groove for accommodating the iron core, and And, the side of the iron core stretches out in the outside of the side shield of coil plastic processing frame two of the H-shaped structure, the copper coil It is looped around on the coil plastic processing frame；The bottom of the motor vibrator is centered around the copper coil exposed on the coil plastic processing frame On.

3. driving device for electric toothbrush according to claim 1, it is characterised in that：The plastics locating rack is with rectangle The closing plastic structural part of cavity, the profile entirety rectangular shaped of the plastics locating rack.

4. driving device for electric toothbrush according to claim 1, it is characterised in that：First limiting plate and second spacing Multiple screws for mounting screw are provided with the first groove on plate, on the position of the screw and the plastics resonance plate Open slot position is corresponding.

5. driving device for electric toothbrush according to claim 4, it is characterised in that：3rd limiting plate and the 4th spacing Plate is provided with multiple stepped holes for mounting screw, the open slot position on the position of the stepped hole and the plastics resonance plate Put corresponding.

6. the driving device for electric toothbrush according to claim 1 or 4, it is characterised in that：First connecting plate and second The deep-slotted chip breaker for installing bearing is respectively provided with connecting plate.

7. driving device for electric toothbrush according to claim 6, it is characterised in that：Bearing is set with the power transmission shaft, The bearing is arranged in the deep-slotted chip breaker.

8. driving device for electric toothbrush according to claim 1, it is characterised in that：First limiting plate and second spacing The depth of the first groove on plate is equal to the thickness of the plastics resonance plate.

9. driving device for electric toothbrush according to claim 1, it is characterised in that：The side of the plastics locating rack is set There is TPE flexible glues layer.

10. driving device for electric toothbrush according to claim 1, it is characterised in that：It is cast iron piece that the metal turns energy piece； The power transmission shaft is stainless steel structure part or cast-iron structure part.