CN105997288B - For the driving device of electric tooth cleaner high speed reciprocating rotary - Google Patents

For the driving device of electric tooth cleaner high speed reciprocating rotary Download PDF

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Publication number
CN105997288B
CN105997288B CN201610281487.4A CN201610281487A CN105997288B CN 105997288 B CN105997288 B CN 105997288B CN 201610281487 A CN201610281487 A CN 201610281487A CN 105997288 B CN105997288 B CN 105997288B
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China
Prior art keywords
shaft
permanent magnet
magnetizer
driving
protrusion
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CN105997288A (en
Inventor
戴晓国
徐振武
尹显春
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Shanghai Shift Electrics Co Ltd
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Shanghai Shift Electrics Co Ltd
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61CDENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C17/00Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
    • A61C17/16Power-driven cleaning or polishing devices
    • A61C17/22Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like
    • A61C17/32Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating
    • A61C17/34Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating driven by electric motor
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61CDENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C17/00Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
    • A61C17/16Power-driven cleaning or polishing devices
    • A61C17/22Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like
    • A61C17/24Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like rotating continuously
    • A61C17/26Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like rotating continuously driven by electric motor
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K33/00Motors with reciprocating, oscillating or vibrating magnet, armature or coil system
    • H02K33/16Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with polarised armatures moving in alternate directions by reversal or energisation of a single coil system

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  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)

Abstract

The invention discloses a kind of driving device of the high speed reciprocating rotary for electric tooth cleaner, including driving coil, rotating assembly, driving permanent magnet, energy storage equipment, drive end bearing bracket and rear end cap.Rotating assembly includes shaft, connects firmly the magnetizer in shaft, the magnetizer twisted rotary shaft and unilateral shaft magnetizer protrusion is formed in the one side of shaft, and shaft magnetizer protrusion passes inside or through the hollow space of driving coil and with the pole yoke end away from rotor shaft direction.Driving permanent magnet is respectively distributed to, close to the pole yoke end both sides of shaft magnetizer protrusion, drive between permanent magnet and the pole yoke end of shaft magnetizer protrusion there are magnetic gap, in the motion process of shaft magnetizer protrusion, magnetic gap is maintained in the range of 0.1mm to 2mm.Driving device using the present invention can realize the miniaturization of electric tooth cleaner, so as to meet children to tooth clearing minimize there is an urgent need to.

Description

For the driving device of electric tooth cleaner high speed reciprocating rotary
Technical field
The present invention relates to the driving devices of a kind of high speed reciprocating rotary more particularly to a kind of small for electric tooth cleaner Type, high speed, the driving device of reciprocating rotary.
Background technology
As quality of the life is promoted, electric tooth cleaner can efficiently clean the food being gathered on teeth space and gum because of it Residue is played an increasingly important role in consumption market.
At present, electric tooth cleaner can be divided into three categories by the realization method of power.
Occur that the revolution of motor drive or vibration type tooth clearing earliest.This kind of tooth clearing is because of driving motor Limitation, power output frequency are generally below 120Hz, and it is more than 120Hz such as to make its working frequency by force, will appear from the portion of running at high speed Part crosses quick-wearing, causes short life, and noise is big.As hollow embryo rotor technology occurs in the development of motor technology, because of its shaft Rotary inertia reduces, and can promote its rated operation frequency, but because of the potential limitation of high-speed motion switch machine structure, at present base This generates vibration mode work to directly drive eccentric wheel, though cleaning capacity is promoted, when motor vibration to use It is uncomfortable to hold feel.
Another kind of representative is, for example, that the tooth clearing of transducing driving is carried out with piezoelectric ceramic piece.Its working frequency highest can Reach 5Mhz, frequency is very high, but amplitude is very small, usually less than 100 microns.Because its amplitude is too small, bristle is vibrations again Damping obviously material is absorbed, the selection of consumer is finally influenced due to the power that user experiences is too small.
Another type of drive is that coil is passed to alternation driving current, is acted on using alternating magnetic field with permanent magnet resonance In the mode of vibration of system, this mode is considered as type of drive most popular at present, is commonly called as in consumption market as sound Ripple drives.Using the tooth clearing that this kind of type of drive drives because it can be realized rapidly to dental plaque mucus in the short period of time Dirty object in cleaning and rejecting teeth space, cleaning effect are good.For example, in the Chinese invention patent of Publication No. CN1830403A The acoustic toothbrush and its rotation axle electric machine disclosed in application.Rotation axle electric machine and motor driving are set in the toothbrush body of the acoustic toothbrush Device, rotation axle electric machine include stent, the electromagnetic coil outside stent and the balance staff in rack bore, consolidate in stent ends Fixed two pieces of magnets, fixed rotating shaft on balance staff, balance staff are installed on by shaft on stent, the power output end of balance staff and head toothbrushes Brush holder support connects, and the other end of balance staff approaches with two pieces of magnets, and balance staff is total to the electromagnetic coil and two pieces of magnets Head toothbrushes high speed swinging is driven under same-action, the frequency that rotation axle electric machine one side sets to adjust balance staff hunting frequency adjusts dress It puts.A kind of high-frequency electric toothbrush is also disclosed in the Chinese utility model patent for being CN203539472 U in Authorization Notice No., Including main shaft, main casing, coil block, elastic element and control circuit board;The main shaft is articulated on main casing and can be around master The central axis of axis is swung, and front-end of spindle is equipped with head toothbrushes, magnet is fixed on main shaft;The coil block is fixed on main casing It on body and covers at outside magnet, for interacting to drive spindle swing with magnet;One free end of elastic element is consolidated Due on housing, another free end is fixed on main shaft, and when coil block drives spindle swing, the elastic element is used to provide It is applied to torque on main shaft and opposite with spindle swing direction;The control circuit board is connected with coil block electrode, is used In to coil block output high-frequency pulse square wave.
It facts have proved that vibration frequency is more than 250Hz and remains to keep 0.5 millimeter of amplitude or more under the loading condition of oral cavity Electric tooth cleaner cleaning capacity and efficiency highest, it is most popular with consumers.Although above-mentioned patent application or utility model patent Frequency can all be higher than 250Hz, but their volume is larger, heavier-weight, is not particularly suitable for children's use.
The content of the invention
It is an object of the present invention to provide a kind of driving device for electric tooth cleaner high speed reciprocating rotary, compared with existing There is driving device that can effectively reduce the size, mitigate weight, improving hand-held seismaesthesia, so that possessing cleaning the teeth for this driving device Utensil structure is simple, can be mass, children is suitble to use.
According to the present invention, a kind of driving device of the high speed reciprocating rotary for electric tooth cleaner is provided, including driving Moving winding, rotating assembly, driving permanent magnet, energy storage equipment, drive end bearing bracket and rear end cap.Rotating assembly include shaft, connect firmly turn Magnetizer on axis, the magnetizer twisted rotary shaft and forms unilateral shaft magnetizer protrusion, the shaft magnetic conduction in the one side of shaft Body protrusion passes inside or through the hollow space of driving coil and with the pole yoke end away from rotor shaft direction.Driving permanent magnet divides respectively Cloth drives between permanent magnet and the pole yoke end of shaft magnetizer protrusion and exists close to the pole yoke end both sides of shaft magnetizer protrusion Magnetic gap.The energy storage equipment includes at least one first energy storage equipment, or including at least one first energy storage equipment and at least One the second energy storage equipment, the first energy storage equipment include being fixed on the connector of adjacent back end lid in shaft, on connector Along the axis direction for being roughly parallel to shaft magnetizer protrusion and the main magnetic damping permanent magnet connected firmly towards the protrusion direction and divide The the first damping permanent magnet and the second damping permanent magnet not being fixed on rear end cap, so as to untouchable between utilization permanent magnet The resonator system of the driving device of magneticaction and the variation structure high speed reciprocating rotary of magnetic gap size.
In the motion process of shaft magnetizer protrusion, magnetic gap is maintained in the range of 0.1mm to 2mm.It is preferred that described In the motion process of shaft magnetizer protrusion, the magnetic gap between driving permanent magnet and the pole yoke end of shaft magnetizer protrusion is 0.5mm
It is preferred that the angle of the internal magnetic field lines of the axis of shaft magnetizer protrusion and driving permanent magnet is 0 degree to 90 degree.
It is preferred that when driving coil is not powered on, the pole yoke end of shaft magnetizer protrusion is in middle position, drives permanent magnet phase It is symmetrical to the pole yoke end of shaft magnetizer protrusion placed in the middle.
In one embodiment, magnetizer includes the composite wafer type high permeability materials magnetic conduction sheet that closed assembly forms, magnetic conduction sheet Thickness be 0.2~1.0mm.It is preferred that the thickness of magnetic conduction sheet is 0.3mm.
As described above, driving device provided by the invention may also include at least one first energy storage equipment or including extremely Few first energy storage equipment and at least one second energy storage equipment.Specifically, the first energy storage equipment can include being fixed on The connector of adjacent back end lid in shaft, on connector and along the axis direction for being roughly parallel to shaft magnetizer protrusion and Towards the protrusion direction main magnetic damping permanent magnet connected firmly and first, second damping permanent magnetism being fixed on respectively on rear end cap Body.Second energy storage equipment can include be fixed on the connector of adjacent back end lid in shaft, on connector along substantially parallel Axis direction and the elastic component and balance weight that are connected firmly towards the protrusion direction in shaft magnetizer protrusion, the elastic component is separate The front end of connector and balance weight connect firmly.
In one embodiment, elastic component can be cuboid or sheet metal elastic component.
Driving device using the present invention can realize the miniaturization of electric tooth cleaner, so as to meet children to clean Tooth utensil miniaturization there is an urgent need to.Actual measurement is carried out to product according to the present invention to draw, working frequency 230~ During 330Hz scopes, amplitude is shaken under the loading condition of oral cavity up to 0.5 millimeter or more.And the outer housing diameter of product can be with 18 × 22 millimeters are narrowed down to, and it is simple in structure, craft precision requirement is low, and service life is relatively long.
Description of the drawings
Fig. 1 a are the assembling perspective view according to inventive drive means;
Fig. 1 b are the sectional view of driving device shown in Fig. 1 a;
Fig. 2 is the exploded view of driving device shown in Fig. 1 a;
Fig. 3 is the magnetic circuit model schematic diagram of driving device shown in Fig. 1 a;
Fig. 4 a-f are the driving permanent magnet of driving device shown in Fig. 1 a and magnetizer position relationship schematic diagram;
Fig. 5 a are the first energy storage equipment assembling perspective view;
Fig. 5 b-d are the motion analysis schematic diagram of energy storage equipment shown in Fig. 5 a;
Fig. 6 schematically illustrates spacing-frequency characteristic using the driving device of the first energy storage equipment shown in Fig. 5 a;
Fig. 7 a-c are the second energy storage equipment assembling perspective view;
Fig. 8 a-c are the typical case schematic diagram of driving device shown in Fig. 1 a;
Fig. 9 a-c act sectional view for driving device shown in Fig. 1 a.
Reference sign
A1 is main magnetic damping permanent magnet
A2 is driving coil
A3 is magnetizer
A4, A5 are driving permanent magnet
A6 is drive end bearing bracket
A7 is shaft
A8 is bearing
A9 is connector
A10 is rear end cap
A11, A12 are respectively first, second damping permanent magnet
A13 is balance weight
A14 is elastic component
A15 is magnetic obturator
A16 is coil brace
A31 is shaft magnetizer protrusion
G1 is driving device
G2 is switch
G3 wiring boards in order to control
G4 is indicator light
G5 is battery
G6 is brush head
L0 is shaft axis
L1 is the axis of shaft magnetizer protrusion
D1 is the magnetic gap between driving permanent magnet and the pole yoke end of shaft magnetizer protrusion
D2 is the spacing between two driving permanent magnets
ANG1, ANG2 are respectively the folder of shaft magnetizer protrusion axis placed in the middle and a driving permanent magnet internal magnetic field lines Angle
F0 isDriving force
F1 isInertia force
W is that the tongue of shaft magnetizer protrusion is wide
Specific embodiment
Exemplary embodiment of the present invention hereafter is more fully described by taking electric toothbrush as an example and with reference to attached drawing.Although below It is only explained by taking electric toothbrush as an example, however, the present invention is not limited thereto.It is suitable for electric shaver, electronic clean Face device, Electrical Shower etc..
In whole attached drawings, similar reference numeral represents similar component.
For the sake of clarity, employ in the present specification statement relative space position word, as "front", "rear", "left", "right", " transverse direction " etc. are briefly described an element as depicted or feature and another element (one or more) or spy The correlation of (one or more) is levied, wherein, "front", "rear" is for shaft axis, is located away in shaft One end of connector is defined as " preceding ", and opposite one end (that is, one end of neighbouring connector) is defined as " rear " with " preceding ";" left side " and " right side " is for shaft axis, towards corresponding views edge perpendicular to the direction of shaft axis in the left side of shaft axis It is defined as on " left side ", right side is defined as on " right side ";" transverse direction " refers to perpendicular to the direction of shaft axis.
Although word first, second etc. is used in this specification to describe multiple element or composition part, these elements Or composition part should not be limited by these words.These words are only used for distinguishing an element or composition part and another element Or composition part, and do not include " order ".Therefore, the ordinal number of those elements discussed below or composition part is mutually converted Also without departing from the spirit and scope of the present invention.
In addition, vocabulary "and/or" used herein includes appointing in one or more listed associated vocabulary One and all combinations.
Refer to the attached drawing, the driving device of the high speed reciprocating rotary provided by the present invention for electric tooth cleaner include one Group driving coil A2, rotating assembly, bearing A8, coil brace A16, driving permanent magnet A4 and A5, magnetic obturator A15, accumulation of energy dress It puts and drive end bearing bracket A6 and rear end cap A10.
Rotating assembly includes shaft A7, the magnetizer formed by composite wafer type magnetic conduction sheet closed assembly connected firmly on shaft A7 A3.Shaft A7 is generally cylindrical body, and brush head interface is distributed with close to one end of brush head G6 along the direction of its axis L0 in shaft A7, Brush head interface makes brush head removably be coupled with shaft A7 and brush head can be made to be driven and high speed reciprocating rotary by shaft A7.Shaft A7 Middle part be fixedly connected with the magnetizer A3 formed by composite wafer type magnetic conduction sheet closed assembly, magnetizer A3 twisted rotary shafts A7 and in shaft A7 One side be formed with unilateral shaft magnetizer protrusion A31 (referring to Fig. 2,4a-4f).By above-mentioned unilateral shaft magnetizer protrusion A31 Neutrality line be defined as the axis L1 of shaft magnetizer protrusion A31 axis L1, shaft magnetizer protrusion A31 along from shaft A7 axis L0 is directed toward the direction extension of driving permanent magnet A4 and A5, and shaft magnetizer protrusion A31 passes inside or through the hollow of driving coil A2 Part, and the pole yoke that end for defining the separate shaft A7 directions of shaft magnetizer protrusion A31 is shaft magnetizer protrusion A31 End.
It is same that bearing A8, bearing A8 and shaft A7 are distributed with respectively on shaft A7 and at shaft magnetizer protrusion A31 both ends The heart is simultaneously fixed in coil brace A16, causes bearing A8 constraints shaft A7 that can only be rotated compared with bearing A8.
Driving permanent magnet A4, A5 are being distributed with respectively close to the pole yoke end both sides of shaft magnetizer protrusion A31.In this implementation In example, size and shape are identical each other by driving permanent magnet A4, A5, substantially in cuboid.Driving permanent magnet A4, A5 and shaft are led There are magnetic gap D1 between the pole yoke end of magnet protrusion A31, magnetic gap D1 can ensure to drive permanent magnet A4, A5 and shaft magnetizer convex The pole yoke end of A31 is played without interferingly relative motion.Permanent magnet A4 and driving permanent magnet A5 are driven raised towards shaft magnetizer Pole polarity on the pole yoke extreme direction of A31 is opposite.For example, driving permanent magnet A4 is in the pole towards shaft magnetizer protrusion A31 Polarity on yoke extreme direction is N poles, then drives permanent magnet A5 on the direction at the pole yoke end towards shaft magnetizer protrusion A31 Polarity is S poles, and vice versa.
In the present embodiment, when driving coil A2 is not powered on, the pole yoke end of shaft magnetizer protrusion A31 is in lean-with It puts, the pole yoke end of shaft magnetizer protrusion A31 relatively placed in the middle driving permanent magnet A4, A5 is symmetrical, driving permanent magnet A4, A5 Internal magnetic field lines are parallel to the axis L1 of shaft magnetizer protrusion A31 or with the axis L1 of shaft magnetizer protrusion A31 in being less than 90 degree of angle.Drive the end face of pole yoke extreme direction of separate shaft magnetizer protrusion A31 of permanent magnet A4, A5 and magnetic obturator A15 is connected firmly.It is preferred that the material of magnetic obturator A15 is the material with high permeability, magnetic obturator A15 also can substantially be in cuboid Shape, magnetic obturator A15 and coil brace A16 are connected firmly.
Be fixed with driving coil A2 on coil brace A16, driving coil A2 in a ring, inside annular driving coil A2 Hollow region can accommodate shaft magnetizer protrusion A31 and allow shaft magnetizer protrusion A31 wherein without interferingly moving.Driving Loop A 2 can for example be formed by enameled wire coiling, and driving coil A2 has lead end, these lead ends can be attached to control circuit Plate or power supply, control circuit board or power supply can provide alternating current for driving coil A2.
The driving device of the high speed reciprocating rotary of the present invention may also include energy storage equipment, such as attached drawing 1a, 1b, 2 and 4a-4f institute Show.It can include two kinds for the energy storage equipment of the present invention, the first energy storage equipment and the second energy storage equipment.In one embodiment, Inventive drive means include the first energy storage equipment (referring to Fig. 5 a), which includes being fixed on shaft A7 after The connector A9 of end cap A10, edge is roughly parallel to direction and the court of the axis L1 of shaft magnetizer protrusion A31 on connector A9 To the protrusion direction main magnetic damping permanent magnet A1 connected firmly and the first damping permanent magnet A11 being fixed on respectively on rear end cap A10 With the second damping permanent magnet A12.Main magnetic damping permanent magnet A1 is also substantially in cuboid.It is not powered in driving coil A2, shaft When magnetizer protrusion A31 poles yoke end is in middle position, the first damping permanent magnet A11 and the second damping permanent magnet A12 are relatively main Magnetic damping permanent magnet A1 is symmetrical, the relatively main magnetic damping permanent magnetism of internal magnetic field lines of first, second damping permanent magnet A11, A12 The internal magnetic field lines of body A1 face each other or back to the angle of the internal magnetic field lines is 150 degree to 210 degree.In the present embodiment Preferably 180 degree, i.e., the polarity of the first damping opposed facing magnetic poles of permanent magnet A11 and main magnetic damping permanent magnet A1 is identical, the The polarity of the two damping opposed facing magnetic poles of permanent magnet A12 and main magnetic damping permanent magnet A1 is identical, main magnetic damping permanent magnet A1's The extended line of internal magnetic field lines is at least partially through the first or second damping permanent magnet A11 or A12.First damping permanent magnet There are magnetic damping gap between A11 and main magnetic damping permanent magnet A1, which allows main magnetic damping permanent magnet A1 phases To the first damping permanent magnet A11 without interferingly moving.Second damping permanent magnet A12 and main magnetic damping permanent magnet A1 between there is also Magnetic damping gap, the magnetic damping gap also allow for main magnetic damping permanent magnet A1 with respect to the second damping permanent magnet A12 without interferingly Movement.
In another embodiment, inventive drive means include the second energy storage equipment (referring to Fig. 7 a-c), the second accumulation of energy Device is including being fixed on the connector A9 of adjacent back end lid A10 on shaft A7, edge is roughly parallel to shaft and leads on connector A9 The direction of the axis L1 of magnet protrusion A31 and the elastic component A14 and balance weight A13 connected firmly towards the protrusion direction.Elastic component A14 It is connected firmly in the front end away from connector A9 with balance weight A13.Elastic component A14 can be cuboid metal spring piece, can also It is flap elastics.Balance weight A13 can be metalwork or plastic part with appropriate mass etc..Do not lead in driving coil A2 When electricity, the pole yoke end of shaft magnetizer protrusion A31 are in middle position, balance weight A13 relative resilient parts A14 is distributed between two parties, bullet Length of the shape part A14 between balance weight A13 and connector A9 can ensure balance weight A13 and connector A9 without interferingly phase To movement.Although in an embodiment of the present invention, driving device includes first energy storage equipment or second energy storage equipment, But one of ordinary skill in the art are it is contemplated that driving device may also comprise multiple first energy storage equipments or multiple second accumulation of energys dress It puts, may also include the combination of the first energy storage equipment and the second energy storage equipment, these technical solutions are without departing from the scope of the present invention.
Drive end bearing bracket A6, coil brace A16 and rear end cap A10 are connected firmly together by the fastener of such as bolt etc.It connects firmly Drive end bearing bracket A6, coil brace A16 and rear end cap A10 can accommodate driving coil A2, rotating assembly, bearing A8, driving permanent magnet A4 and A5, magnetic obturator A15 and energy storage equipment, and the moveable element in the above-mentioned component being received can be compared with drive end bearing bracket The sub-assembly of A6, coil brace A16 and rear end cap A10 are without interferingly moving.
Motion analysis is carried out below in conjunction with the accompanying drawings.
As shown in Figure 3, when alternating current is by driving coil A2, driving coil A2 generates alternating magnetic field, magnetizer A3 is by cyclic magnetization, so that the pole yoke end of shaft magnetizer protrusion A31 is generated the alternation of magnetic polarity by the frequency of alternating current. Since driving coil A2 hollow regions are magnetic line of force close quarters the most, and pass inside or through the hollow region of driving coil A2 Magnetizer A3 be made by high permeability materials, therefore, be located at driving coil A2 by what the driving coil A2 that is powered was generated Most magnetic lines of force in hollow region flow through magnetizer A3, thus this structure is effectively improved shaft magnetizer protrusion Magnetic induction intensity at the pole yoke end of A31.Magnetic pole at the pole yoke end of shaft magnetizer protrusion A31 is with driving permanent magnet A4's When pole polarity is identical, shaft magnetizer protrusion A31 poles yoke end will generate repulsive force with driving permanent magnet A4.Due to driving permanent magnetism Body A4 and driving permanent magnet A5 is towards the pole polarity on the yoke extreme direction of shaft magnetizer protrusion A31 poles on the contrary, therefore shaft Magnetizer protrusion A31 poles yoke end will generate attraction with driving permanent magnet A5, and stationary driving permanent magnet A4 and driving are forever The repulsive force and attraction at magnet A5 countershafts magnetizer protrusion A31 poles yoke end form clockwise torque on shaft A7.This reality It applies in example, as described above, bearing is distributed with respectively along shaft axis L0 on shaft A7 and in shaft magnetizer protrusion A31 both sides A8, bearing A8 are fixed in coil brace A16, and bearing A8 constraints shaft A7 can only be rotated relative to.So as to stationary Driving permanent magnet A4 and drive permanent magnet A5 countershafts magnetizer protrusion A31 poles yoke end repulsive force and attraction in shaft A7 Axis L0 is rotated clockwise the clockwise torque drive shaft A7 of upper formation around the shaft.It together should shaft magnetizer protrusion A31 poles When magnetic pole at yoke end is identical with driving the pole polarity of permanent magnet A5, stationary driving permanent magnet A4 and driving permanent magnet The attraction and repulsive force at A5 countershafts magnetizer protrusion A31 poles yoke end and the torque actuated counterclockwise formed on shaft A7 turn Axis L0 is rotated counterclockwise axis A7 around the shaft.
In conclusion when alternating current is by driving coil A2, driving coil A2 generates alternating magnetic field, magnetizer A3 weeks Phase property magnetizes, so as to which shaft magnetizer protrusion A31 poles yoke end is by the alternation of the frequency generation magnetic polarity of alternating current.It is stationary Driving permanent magnet A4 and drive permanent magnet A5 countershafts magnetizer protrusion A31 poles yoke end interaction force drive shaft A7 around Shaft axis L0 is with being identical to the frequency cycle of alternating current reciprocating rotary.
As shown in attached drawing 4a-4f, there are magnetic gaps between shaft magnetizer protrusion A31 poles yoke end and driving permanent magnet A4, A5 D1, magnetic gap D1 are shaft magnetizer protrusion A31 poles yoke end and drive the beeline between permanent magnet A4 or driving permanent magnet A5. It is well known that under identical driving coil electric current and identical driving permanent magnet A4, A5, magnetic gap D1 is smaller, shaft magnetizer Interaction force between raised A31 poles yoke end and driving permanent magnet A4, A5 is bigger, thus the driving device of high speed reciprocating rotary Efficiency it is higher, but magnetic gap D1 is too small will cause additional noise and fever.The applicant is drawn by a large number of experiments, is led in shaft Remain that magnetic gap D1 is desirable in the range of 0.1mm to 2mm in magnet protrusion A31 motion processes.Obviously, such as attached drawing Shown in 4d-4f, driving permanent magnet A4 with drive permanent magnet A5 can also be non-parallel be distributed.It is preferred that in shaft magnetizer protrusion When the pole yoke end of A31 is in middle position, the internal magnetic field lines of the axis L1 and driving permanent magnet A4 of shaft magnetizer protrusion A31 Included angle A NG1 for 0 degree to 90 degree, equally, the axis L1 of shaft magnetizer protrusion A31 and the inside magnetic force for driving permanent magnet A5 The included angle A NG2 of line is 0 degree to 90 degree, and included angle A NG1 is identical with included angle A NG2 sizes, and magnetic gap D1 is in shaft magnetizer protrusion It is remained in A31 motion processes in the range of 0.1mm to 2mm.Certainly, the pole yoke end of shaft magnetizer protrusion A31 can be with In different geometric shapes, as long as ensureing that magnetic gap D1 remains at 0.1mm extremely in shaft magnetizer protrusion A31 motion processes In the range of 2mm.
The present invention provides a kind of structure that unilateral shaft magnetizer protrusion A31 is formed in the one side of shaft A7, this phases For the shaft magnetizer bulge-structure that shaft axis L0 is asymmetric distribution, enough torsion output not only can guarantee, but also can be with Effectively reduce the Outside Dimensions of driving device.
In order to improve load capacity, it is very necessary that energy storage equipment is set in driving device.Driving in the present invention Power f0 is the power of periodical alternation, and energy storage equipment can compensate the fluctuation of the output torque caused by driving force changes, Higher hamonic wave is vibrated caused by driving device can be inhibited simultaneously.
Different embodiment according to the subject invention introduces two kinds of energy storage equipments.Attached drawing 5a shows the first energy storage equipment, Including being fixed on the connector A9 of adjacent back end lid A10 on shaft A7, edge is roughly parallel to shaft magnetizer on connector A9 The direction of the axis L1 of raised A31 and the main magnetic damping permanent magnet A1 that connects firmly towards the protrusion direction and rear end cap is fixed on respectively The first damping permanent magnet A11 and the second damping permanent magnet A12 on A10.It is not powered in driving coil A2, shaft magnetizer protrusion When A31 poles yoke end is in middle position, the first damping permanent magnet A11 and the second damping relatively main magnetic damping permanent magnetism of permanent magnet A12 Body A1 is symmetrical, the internal magnetic field lines of the relatively main magnetic damping permanent magnet A1 of internal magnetic field lines of the first damping permanent magnet A11 Angle is 180 degree, and second damps the folder of the internal magnetic field lines of the relatively main magnetic damping permanent magnet A1 of internal magnetic field lines of permanent magnet A12 Angle is 180 degree, the extended lines of the internal magnetic field lines of main magnetic damping permanent magnet A1 at least partially across the first damping permanent magnet A11 or Second damping permanent magnet A12.It is described there are magnetic damping gap between first damping permanent magnet A11 and main magnetic damping permanent magnet A1 Magnetic damping gap allows main magnetic damping permanent magnet A1 with respect to the first damping permanent magnet A11 without interferingly moving.Second damping is forever There are magnetic damping gaps, the magnetic damping gap between magnet A12 and main magnetic damping permanent magnet A1 to allow main magnetic damping permanent magnetism Body A1 is compared with the second damping permanent magnet A12 without interferingly moving.
Fig. 5 b- Fig. 5 d are the motion analysis schematic diagram of energy storage equipment shown in Fig. 5 a.As shown in attached drawing 5d, when main magnetic damping forever Magnet A1 is in when axis L0 is rotated in the counterclockwise to the extreme position in left side around the shaft, driving coil A2 switching electric currents direction, The driving force f0 of generation makes shaft A7, and axis L0 is rotated in a clockwise direction and main magnetic resistance of the shaft A7 without relative motion around the shaft Also axis L0 is rotated in a clockwise direction Buddhist nun's permanent magnet A1 around the shaft, and is fixed on the second damping permanent magnet A12 of rear end cap A10 Stationary with the first damping permanent magnet A11, the gap between the damping permanent magnets of main magnetic damping permanent magnet A1 and second A12 becomes Small, the gap between the damping permanent magnets of main magnetic damping permanent magnet A1 and first A11 becomes larger.Due under the action of driving force f0, Gap between the damping permanent magnets of main magnetic damping permanent magnet A1 and second A12 becomes smaller, therefore main magnetic damping permanent magnet A1 and second The magnetic energy increase in the magnetic gap between permanent magnet A12 is damped, it can be achieved that the damping permanent magnets of main magnetic damping permanent magnet A1 and second A12 Between magnetic gap in magnetic energy savings, so as to fulfill thermal energy storage process.Meanwhile under the action of driving force f0, main magnetic damping is forever Gap between the damping permanent magnets of magnet A1 and first A11 becomes larger, therefore the damping permanent magnets of main magnetic damping permanent magnet A1 and first Magnetic energy in magnetic gap between A11 reduces, and original savings are between the damping permanent magnets of main magnetic damping permanent magnet A1 and first A11 Magnetic energy in magnetic gap is released, magnetic energy of this release drives the axis L0 of main magnetic damping permanent magnet A1 A7 around the shaft to revolve clockwise Turn, so as to drive shaft A7, axis L0 is rotated clockwise around the shaft, realizes exergonic process.
As shown in fig. 5b, after main magnetic damping permanent magnet A1 is rotated in a clockwise direction to extreme position, drive at this time The just switching electric current direction of loop A 2, the driving force f0 of generation make shaft A7 around the shaft axis L0 be rotated in the counterclockwise direction and Main magnetic damping permanent magnet A1s of the shaft A7 without relative motion is also rotated in the counterclockwise direction.The resistances of main magnetic damping permanent magnet A1 and second The magnetic energy in magnetic gap between Buddhist nun's permanent magnet A12 is released, and the magnetic energy of this release can be used to drive main magnetic damping permanent magnet A1 The axis L0 of A7 is rotated in the counterclockwise around the shaft, so as to fulfill exergonic process.And the dampings of main magnetic damping permanent magnet A1 and first are forever The magnetic energy in magnetic gap between magnet A11 is saved, so as to fulfill thermal energy storage process.Main magnetic damping permanent magnet A1 at this time and First, the thermal energy storage process of magnetic energy and the fortune of exergonic process and shaft A7 in the magnetic gap between second damping permanent magnet A11, A12 Dynamic similar with above-mentioned analysis, details are not described herein.
In conclusion the first energy storage equipment provided by the invention can be with the movements such as brush head G6, shaft A7 and magnetizer A3 Part forms resonator system, so as to substantially increase the mechanical efficiency of the driving device of high speed reciprocating rotary.Above-mentioned resonator system The adjustment of intrinsic frequency can be by adjusting the magnetic induction of the damping permanent magnets of main magnetic damping permanent magnet A1 and first, second A11, A12 Between between intensity, and/or permanent magnet volume and/or main magnetic damping permanent magnet A1 and first, second damping permanent magnet A11, A12 Away from realizing.The intrinsic frequency of the driving device of high speed reciprocating rotary after adjustment is more than 0.9 of power frequency in driving coil Again and less than 1.1 times of power frequency in driving coil.When flowing through driving coil so as to the electric current that can ensure that with fixed frequency, this The driving device of the high speed reciprocating rotary of invention is in resonant condition.
Attached drawing 6 shows the relation of different damping permanent magnet spacing and frequency (Hz).Curve shows to damp permanent magnet Magnetic spacing directly affects resonant frequency.
Above-mentioned first energy storage equipment utilizes untouchable magneticaction and the variation structure of magnetic gap size between permanent magnet The resonator system of the driving device of high speed reciprocating rotary is built, defines above-mentioned resonator system herein as magnetic resonance system.The present invention Magnetic resonance system obvious advantage is that the active force between permanent magnet is carried out by non-contacting mode.Due to the biography of power It passs using cordless, therefore the bang path that higher hamonic wave has been blocked to vibrate, so as to which magnetic resonance system greatly inhibits The transmission of various higher hamonic wave vibrations, therefore magnetic resonance system vibrating also than traditional by the humorous of resonant springs structure to housing Vibrating system is to the with small vibration of housing, so as to improve the grip comfort of user, while also improve traditional energy storage equipment by The noise that higher hamonic wave triggers.It is humorous so as to solve tradition again since the transmission of power in magnetic resonance system is using cordless The fatigue problem of resonant springs in vibrating system substantially increases the reliability and service life of resonator system.It is preferred that main magnetic damping The damping permanent magnets of permanent magnet A1 and first, second A11, A12 use the stronger neodymium iron boron magnetic body of magnetic force.
In addition, band is minimized to device compared with the shaft magnetizer protrusion A31 of the axis L0 asymmetric distributions of shaft A7 Carry out obvious advantage, but this asymmetrical shaft magnetizer protrusion A31 increases the driving device housing to run at high speed Whole vibrations.In another embodiment, as shown in figs. 7 a-c, the second energy storage equipment has just been used, which, which includes being fixed on, turns The connector A9 of adjacent back end lid A10 on axis A7, on connector A9 along the axis for being roughly parallel to shaft magnetizer protrusion A31 The direction of L1 and the elastic component A14 and balance weight A13 connected firmly towards the protrusion direction.Attached drawing 7b represents that driving coil is not powered on When, the pole yoke end of shaft magnetizer protrusion A31 is in middle position, and permanent magnet A4, A5 are compared with shaft magnetic conduction placed in the middle for driving The pole yoke end of body protrusion A31 is in symmetrical state.Attached drawing 7a and 7c respectively illustrate principal axis A 7 and rotate in the counterclockwise direction And the state being rotated in the clockwise direction.
For ease of description, it is when principal axis A 7 is subject under electromagnetic force to rotate around its axis L0, driving force f0 is equivalent It is applied to the barycenter of the movement parts such as brush head G6, shaft A7, magnetizer A3.By inertia force f1 equivalent actions to the matter of balance weight A13 The heart.If being not provided with connector A9 and elastic component A14, the direction of driving force f0 with the frequency of alternating current in driving coil and Cyclically-varying, the driving force f0 of alternation are transferred to the housing of driving device by movement parts, form posting for non-powered demand Raw vibrations make grip person uncomfortable.
In the present embodiment, the second energy storage equipment further includes balance weight A13 and elastic component A14 in addition to including connector A9. As shown in Figure 7a, when magnetizer A3 is when the axis L0 of A7 is rotated in the counterclockwise direction around the shaft under the action of driving force f0, put down Block A13 weigh because of effect of inertia, generates the inertia force f1 with f0 opposite directions, inertia force f1 is acted on elastic component A14, elastic component A14 compressions deform and then energy storage, while kinetic energy is generated on balance weight A13, realize the energy storage of balance weight A13.Because of f0 and f1 Direction vector on the contrary, the torque that balance weight A13 and elastic component A14 are generated on shaft A7 exists in the direction opposite driving force f0 The direction of the torque generated on shaft A7.By adjusting the stiffness factor of elastic component A14 and the quality of balance weight A13 with match by The frequency for the parasitic vibrations of non-powered that the movement parts such as shaft A7, magnetizer A3 caused by driving force f0 generate, so that second stores The parasitic vibrations of non-powered that energy device and above-mentioned driving force f0 are generated generate resonance, at this time by brush head G6, shaft A7, magnetizer The parasitic vibrations of non-powered that the movement parts such as A3 generate will be offset significantly.Therefore the second energy storage equipment can be effectively inhibited because of brush head The parasitic vibrations of non-powered that the movement parts such as G6, shaft A7, magnetizer A3 generate.
Referring to attached drawing 2, in inventive drive means, the magnetizer A3 that is formed by composite wafer type magnetic conduction sheet closed assembly, The metal material that the high magnetic conduction that thickness is 0.2~1.0mm can be selected is formed, and lamination is thinner, more can effectively reduce magnetic conduction process Kelvin effect reduces the vortex that high frequency electric is led to, improves energy transfer efficiency, and drop low-temperature-rise and the torque for promoting power are defeated Go out.But laminated sheet is excessively thin also easily to be deformed in the production process, increases technology difficulty.Therefore reasonable selection folds thick need in efficiency And it trades off in technology difficulty.In the present embodiment, it is preferred to use thickness is the lamination of 0.3mm.
Fig. 9 a-c act sectional view for inventive drive means, as shown in the figure, in driving device provided by the present invention In, influencing power output performance key factor is included between driving permanent magnet A4, A5 and the pole yoke end of shaft magnetizer protrusion A31 Magnetic gap D1, two driving permanent magnet A4, A5 between space Ds 2 and permanent magnet material, wherein, driving permanent magnet A4, A5 The preferably ndfeb magnet of high magnetic force possesses the characteristics of small magnetic force is strong.Drive the space D 2 between permanent magnet A4, A5 It may be configured as 0~2mm.A large number of experiments show that the space D 2 between permanent magnet A4, A5 is preferably driven to be equal to shaft magnetizer protrusion 0.8 times of the wide W of tongue of A31, and the width of permanent magnet A4, A5 is driven to be equal to the wide W of tongue of shaft magnetizer protrusion A31.Two drives The vibrations amplitude that space D 2 between dynamic permanent magnet A4, A5 is too small to cause shaft A7 is small and torque is big, two driving permanent magnets The conference excessively of space D 2 between A4, A5 causes the vibrations amplitude of shaft A7 greatly and torque is small.Driving permanent magnet A4, A5 and shaft are led Magnetic gap D1 between the pole yoke end of magnet protrusion A31 may be configured as 0.1~2mm.A large number of experiments show that driving permanent magnet A4, A5 Magnetic gap D1 between the pole yoke end of shaft magnetizer protrusion A31 also can shadow to torque output, magnetic gap D1 is too small, and assembling is difficult, And driving device work during the temperature rising of power device be easy to cause magnetic gap D1 and become smaller, so as to cause driving permanent magnet A4, The pole yoke end of A5 and shaft magnetizer protrusion A31 are stuck.If magnetic gap D1 set it is excessive, can there are driving device efficiency to decline, The shortcomings that torque is insufficient.In the present embodiment, preferably drive between permanent magnet A4, A5 and the pole yoke end of shaft magnetizer protrusion A31 Magnetic gap D1 be 0.5mm.
As shown in attached drawing 8a-c, power drive unit using the present invention can build complete electric tooth cleaner, wherein G1 is the high-speed driving device that the present invention is implemented.G5 is the battery for providing electric energy, and G3 is to provide the control that can generate alternating current Wiring board.The switch G2 of the control action pattern and LED light G4 of indicating operating status is provided on control circuit board G3.
Obviously, above description is only exemplary, before the scope defined by the claims without departing from the present invention It puts, one of ordinary skill in the art can also make a variety of conversion and remodeling, these conversion and remodeling should all fall into the present invention's Scope defined by the claims.

Claims (11)

1. a kind of driving device of high speed reciprocating rotary for electric tooth cleaner, including:Driving coil (A2), shaft group Part, driving permanent magnet (A4, A5), energy storage equipment, drive end bearing bracket (A6) and rear end cap (A10), wherein, the rotating assembly includes turning Axis (A7) connects firmly the magnetizer (A3) in shaft, wherein, magnetizer (A3) twisted rotary shaft (A7) and in shaft (A7) One side forms unilateral shaft magnetizer protrusion (A31), which passes inside or through the hollow of driving coil (A2) Part and the pole yoke end with separate shaft (A7) direction, the driving permanent magnet (A4, A5) are respectively distributed to lead close to shaft Between the pole yoke end of the pole yoke end both sides of magnet protrusion (A31), driving permanent magnet (A4, A5) and shaft magnetizer raised (A31) There are magnetic gap (D1), wherein, the energy storage equipment includes at least one first energy storage equipment, which includes connecting firmly In the connector (A9) of adjacent back end lid (A10) in shaft (A7), on connector (A9) along being roughly parallel to shaft magnetic conduction It axis (L1) direction of body protrusion (A31) and the main magnetic damping permanent magnet (A1) that connects firmly towards the protrusion direction and is fixed on respectively The first damping permanent magnet (A11) and the second damping permanent magnet (A12) on rear end cap (A10), so as to non-between utilization permanent magnet The resonator system of the driving device of the magneticaction of contact and the variation structure high speed reciprocating rotary of magnetic gap size.
2. a kind of driving device of high speed reciprocating rotary for electric tooth cleaner, including:Driving coil (A2), shaft group Part, driving permanent magnet (A4, A5), energy storage equipment, drive end bearing bracket (A6) and rear end cap (A10), wherein, the rotating assembly includes turning Axis (A7) connects firmly the magnetizer (A3) in shaft, wherein, magnetizer (A3) twisted rotary shaft (A7) and in shaft (A7) One side forms unilateral shaft magnetizer protrusion (A31), which passes inside or through the hollow of driving coil (A2) Part and the pole yoke end with separate shaft (A7) direction, the driving permanent magnet (A4, A5) are respectively distributed to lead close to shaft Between the pole yoke end of the pole yoke end both sides of magnet protrusion (A31), driving permanent magnet (A4, A5) and shaft magnetizer raised (A31) There are magnetic gap (D1), wherein, the energy storage equipment includes at least one first energy storage equipment and at least one second energy storage equipment, First energy storage equipment includes being fixed on the connector (A9) of adjacent back end lid (A10) in shaft (A7), in connector (A9) along the main magnetic for being roughly parallel to axis (L1) direction of shaft magnetizer raised (A31) and being connected firmly towards the protrusion direction on Damping permanent magnet (A1) and the first damping permanent magnet (A11) being fixed on respectively on rear end cap (A10) and the second damping permanent magnet (A12), so that the variation of magneticaction and magnetic gap size untouchable between utilization permanent magnet builds high speed reciprocating rotary Driving device resonator system.
3. driving device as claimed in claim 2, wherein, second energy storage equipment includes being fixed on neighbouring in shaft (A7) The connector (A9) of rear end cap (A10), edge is roughly parallel to the axis of shaft magnetizer raised (A31) on connector (A9) (L1) direction and the elastic component (A14) and balance weight (A13) that are connected firmly towards the protrusion direction, the elastic component (A14) is away from even The front end and balance weight (A13) for connecing device (A9) connect firmly.
4. driving device as claimed any one in claims 1 to 3, wherein, in the fortune of the shaft magnetizer raised (A31) During dynamic, the magnetic gap (D1) between the pole yoke end of the driving permanent magnet (A4, A5) and shaft magnetizer raised (A31) is kept In the range of 0.1mm to 2mm.
5. driving device as claimed in claim 4, wherein, in the motion process of the shaft magnetizer raised (A31), institute It is 0.5mm to state the magnetic gap (D1) between the pole yoke end of driving permanent magnet (A4, A5) and shaft magnetizer raised (A31).
6. driving device as claimed any one in claims 1 to 3, wherein, when driving coil (A2) is not powered on, shaft is led The pole yoke end of magnet protrusion (A31) is in middle position, driving permanent magnet (A4, A5) shaft magnetizer protrusion relatively placed in the middle (A31) pole yoke end is symmetrical.
7. driving device as claimed any one in claims 1 to 3, wherein, the axis of the shaft magnetizer raised (A31) (L1) and the angle of the internal magnetic field lines of driving permanent magnet (A4, A5) is 0 degree to 90 degree.
8. driving device as claimed any one in claims 1 to 3, wherein, the magnetizer (A3) includes what closed assembly formed Composite wafer type high permeability materials magnetic conduction sheet, the thickness of the magnetic conduction sheet is 0.2~1.0mm.
9. driving device as claimed in claim 8, wherein, the thickness of the magnetic conduction sheet is 0.3mm.
10. driving device as claimed any one in claims 1 to 3, wherein, the adjustment of the intrinsic frequency of the resonator system Can by adjusting main magnetic damping permanent magnet (A1) with first, second damping permanent magnet (A11, A12) magnetic induction intensity, and/or Spacing between permanent magnet volume and/or main magnetic damping permanent magnet (A1) and first, second damping permanent magnet (A11, A12) is come real It is existing, and the intrinsic frequency of the driving device is made to be more than 0.9 times of power frequency in driving coil and less than electricity in driving coil Flow frequency 1.1 times.
11. driving device as claimed in claim 3, wherein, the elastic component (A14) is cuboid or sheet metal elasticity Part.
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CN107086840B (en) * 2017-04-24 2019-08-13 胡建坤 A kind of control method and oscillating motor for oscillating motor
CN108670478A (en) * 2018-06-22 2018-10-19 珠海市智慧家家居有限公司 Electric toothbrush
WO2021097705A1 (en) * 2019-11-20 2021-05-27 广州市瑞宝电器有限公司 Reciprocal rotation electric motor

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