CN1058711A - To brush automatic tooth-brush - Google Patents

Abstract

A kind of to brush automatic tooth-brush, comprising power source, driver part, gear, action distributor gear, brush body and brush holder, it is characterized in that they are respectively that battery, motor, gear reduction, two suite axles (complete, half bent axle every group each one) take turns doing the action distributor gear that direction is opposite, rotate at 180 ° of angles of phase phase difference by same rotational speed, removable brush body and sealing brush holder.In addition, can regulate the accessory of bristle and flank of tooth pressure in addition.Owing to be subjected to the control of hyperbolic axle, the bristle orientation is constant in the rotation, thereby anthropomorphic dummy's the action of reasonably brushing teeth automatically, and the flank of tooth and slot is clean with toothbrush to crown from tooth root, does not damage gingiva, and cost is cheap relatively, long service life.

Description

To brush automatic tooth-brush

The present invention relates to a kind of toothbrush, specifically relate to a kind of automatic tooth-brush that can to the increment direction tooth be cleaned down from tooth root along slot automatically.This toothbrush brush body is little, and easily the outwash slot can be finished the action of reasonably brushing teeth well, thereby at gingiva not under the situation of being lifted property infringement, automatically teeth space, the inside and outside flank of tooth and field of conjugate action outwash.

Common toothbrush, armrest operation fully, majority are out of patience to brush teeth by the requirement on medical science and the health, be that upper tooth is brushed from top to bottom, it is moving that lower tooth is brushed such unidirectional brush from the bottom up, and it is moving often to make upper and lower shuttle two-way brush, perhaps adopts along brushing teeth with the vertical direction cross directional stretch of slot method.The medical hygiene angle of these two kinds of methods from taking care of one's teeth all is full of prunes.When up-and-down reciprocating is brushed teeth, not only can be pushed through the slot root to the dirt under the quilt brush, but also can push, lift the gingiva meat of teeth roots, facilitate gingival recession, tooth root is exposed, damage tooth.Cross directional stretch brush method is brushed teeth and not only can not also can be lifted and damage gingiva to the slot outwash to a certain extent.Moreover, the bristle of general toothbrush is harder, and the long term lateral pulling method is brushed teeth can the wearing and tearing flank of tooth, during person in middle and old age often tooth root grind dental caries ditch and teeth groove with the gingiva joint portion, the generation odontopathy.And most odontopathy all occur on the tooth position that is not brushed.Disclose a series of Rotary toothbrushes recently, be divided into manually and automatic two classes.This toothbrush all has plants the brush of vertical bristle with it along the face of cylinder, when brush when centrage rotates, the cut motion mutually of the bristle on it and the flank of tooth is the tooth outwash.This toothbrush has single brush and two brush two classes.Concerning single brush rotary type tooth, if the rotation direction of brush is anti-when brushing teeth, cause bristle to shift to tooth root by increment, the anxiety of the gingiva of lifting is then arranged.For two brush Rotary toothbrushes,, must shorten the length of bristle, nor easily plant bristle in order not make this toothbrush head excessive.During these toothbrush work, because bristle ends is made circular motion all the time, brush end becomes tangent relation with the flank of tooth when brushing teeth, and can't brush tooth root and slot, loses toothbrushing effect.See CN87207253, CN2053457, CN2053051, CN2056325, the practical new shape patent announcement of CN2051099 equal sign and the patent application of CN1041099 invention disclosed for details.

A kind of electric toothbrush of domestic present production, this toothbrush have the rotary two rows bristle of totally ten pinches of rotatings each other on brush, in its rotary course the tooth outwash.But because end diameter is 3-5mm during every pinch of bristle contact Tooth of this toothbrush, so when brushing teeth root, if the circular arc that the bristle ends motion that is rotated in a clockwise direction forms is mutually suitable with gingival directions, then the bristle of opposite side work counter clockwise direction rotation then lifts gingiva, and this is irrational equally on medical hygiene.This in addition electric toothbrush costs an arm and a leg, every the suitable ordinary toothbrush of price 200 surplus times, though replaceable brush head when bristle is damaged, its price still be ordinary toothbrush ten surplus times.Such price obviously is that Chinese are burdensome.

Nice Jie Hejieman has introduced a kind of brush and bristle and has made the toothbrush that different modes rotates with respect to brush holder in the patent application of CN88102771 invention disclosed.All planted bristle on by relative two rotating disks of gear and rack gear and tooth bar, these bristles simultaneously can be with the interior outside and the interlock flank of tooth outwash of tooth when brushing teeth.But this Tooth-brush structure complexity, the brush volume is big, slot and tooth root can not be cleaned down when brushing teeth, and can lift gingiva.

Along with improving constantly of people's living standard, the whole nation association that takes care of one's teeth in addition, day active extensive communication and education that takes care of one's teeth of the stomatological hospital and the whole nation, the importance pay attention to day by day of people to taking care of one's teeth.Like this, in daily life, especially in hasty morning, people are sought after a kind of can cleaning tooth totally with water quickly and easily, do not damage simultaneously the gingiva and the flank of tooth, durable in use, novel brushing tool that price generally can be born again.The object of the present invention is to provide a kind of automatic tooth-brush that can overcome above-mentioned shortcoming, this toothbrush is placed in the oral cavity behind the tooth corresponding site, do not need to do again traditional action of brushing teeth, only need make it in the oral cavity, slowly pull out or send into along tooth, just can be automatically the flank of tooth of tooth, slot, tooth root from tooth root to increment direction outwash, simple to operate, easy to use, with low cost.The inventor is at the problems referred to above that exist in the existing toothbrush, research contrast through multiple scheme is found, utilize two pairs of bent axle transmissions and control equilibrated theory of mechanics, drive two brushes that separate, finish the required action of brushing teeth respectively by turns, be simple, reliable, safe, the most comfortable manner of execution of realizing the object of the invention, thereby finished the present invention.

Provided by the invention a kind of to brush automatic tooth-brush, comprising power source, driver part, gear, action distributor gear, brush body and brush holder.

A. said power source is a power supply;

B. said driver part is by said power drives and by the micromotor of hand switch control;

C. said gear is a gear reduction of being exported certain rotating speed and moment of torsion by said Motor Drive with single shaft;

D. said action distributor gear through the rotating speed and the torque drive of said reducing gear output, is done the opposite rotation of direction by same rotational speed by its gear set drive two suite axles under certain phase contrast;

E. said brush body, it is a pair of removable brush that is subjected to said action distributor gear to drive and control, in working order down, said two brush bodies are orientated constant relatively rotating successively by certain speed, do from the both sides root of the tooth to the inswept in opposite directions action of cusp thereby make the bristle that brushes stretch out the back to the flank of tooth repeatedly;

F. said brush holder is the assurance and the lever of said toothbrush, is again to hold and the fixedly capsul and the casing of a～e parts;

But also be provided with:

G. accessory, it is to be convenient to reduce loss and be convenient to regulate backplate and the loam cake of said action distributor gear gear-box and the loam cake of brush holder neck chamber of brush body working depth when bristle and brush body are worked in the oral cavity.

Said power supply can use the aneroid battery or the rechargeable battery of all size, can be installed in the handle tail end back cover, and adopt the flashlight type conductor structure to make it to be electrically connected with said micromotor.Said micromotor can place middle part in the brush handle shell, is connected with power supply by lead and hand switch, for the work of following said parts provides power.The volume of these parts and shape should be suitable for being placed in the housing as far as possible, and can export enough big moment of torsion.

Said reducing gear comprises the train of reduction gears that is in the brush holder front shell, and the variation by the gear number of teeth makes the mechanical movement of driver part output pass to the action distributor gear under required moment of torsion and rotating speed.

Said action distributor gear comprises two suite axles, the gear train and the pedestal of fixedlying connected with every bent axle one end.Every suite axle comprises a full bent axle and one and half bent axles, is used separately as to drive and control corresponding brush body motion.Wherein full crankshaft two end stretches and the parallel bending of mid portion of a close end, the two end axles central lines, its sweep comprises two vertical sections and the parallel-segment with respect to shaft centre line, and said parallel-segment drive brush body is that circular motion is made in the center of circle with the shaft centre line when full bent axle rotates.Said half bent axle, one end stretches and the parallel bending of the other end, and sweep comprises a vertical section and the parallel-segment with respect to shaft centre line, and it is constant to control corresponding brush body bristle orientation when moving in a circle during rotation.Every bent axle one side stretch the part end, respectively be fixed with gear, these gears intermesh, and make two suite axles do the rightabout rotation with same rotational speed, 180 ° of angles of phase phase difference during two suite axles rotation simultaneously.In the two suite axles, fixed gear and deceleration device output gear mesh on the full bent axle, and by desired rotating speed and direction moment of torsion are passed to other three axles by the gear that is fixed on other three axles.The sweep of two groups of axles partly serves as that axle marks circular arc with d-axis when rotating, and drives brush body by it and makes circular motion.The longitudinal end of bent axle d-axis part is supported on the brush handle shell neck brace and penetrates in the axis hole of support, and the minor axis end of full bent axle d-axis part is through the axis hole that is arranged in accessory one side, makes the bent axle location in this way.Said brush body, the manhole that the back vertically has semicircle bearing shell and bearing shell cutting to form, the parallel-segment of full deflection of crankshaft part can be inserted wherein, when this parallel-segment when the bent axle d-axis partly rotates, deflection of crankshaft is partly made circular motion and is driven brush body and do same motion.Brush body also has half outstanding bent axle axis hole near bristle side one end face, and the free end of half bent axle inserts wherein in every suite axle, also is subjected to the control of half bent axle during with the motion of assurance brush body.Said through hole and axis hole respectively and be slidingly matched between full bent axle and half bent axle make brush body along with the rotation of full bent axle and half bent axle do bristle orientation constant be differing 180 ° phase relation with angle and moving in a circle anthropomorphic dummy's the action of rationally brushing teeth of center with bent axle d-axis part centrage.

Said brush holder is the housing of a sealing, comprises procapsid and back casing.Procapsid and back casing are by being threaded and with the rubber seal sealing, forming the power capacity case.Be provided with active clapboard and stationary barrier in the procapsid, respectively it is divided into micromachine storage box and reducing gear gear-box and with the gear-box and the brush holder neck chamber of the common action distributor gear middle gear that forms of accessory, the dividing plate in the neck chamber still is the pedestal of said bent axle.Also be provided with the lead and the on and off switch that connect power supply and motor in the brush holder.Brush holder can be made difformity, as multiple beautiful and applicable profiles such as cylindrical shape, ellipse, olive shape, oblatenesses.For ease of using, on and off switch can be placed in to be convenient on the housing on the manual position.

Said accessory, an end have two axis holes that support two full deflection of crankshaft part minor axises, and the other end is brush holder neck chamber and action distributor gear gear-box loam cake, and the back is palisade, and it is bonding that utilization welds Ji and bonding Ji and the sealing of brush holder procapsid.The brush holder neck has two-layer stationary barrier away from the bonnet end in the chamber, and four axis holes that support four bent axles are arranged on it, forms double-deck front axle bracket, injects the leakproof oils and fats between the wall of two-layer pedestal in the gap, makes the sealing of the brush holder other end in this way.

Below, describe a kind of concrete embodiment preferred of the present invention in detail.

Accompanying drawing I and I ' be the present invention to a kind of concrete preferred embodiment of brush automatic tooth-brush vertically on main cutaway view and the partial enlarged drawing analysing and observe and analyse and observe down; Accompanying drawing 2 is that switch, action distribution member, pedestal, brush body and backplate are bent to cutaway view laterally reaching of different longitudinal position; Accompanying drawing 3 is brush body sectional elevations on the different operating position; Attached Figure 4 and 5 are that (the chain-dotted line circle among this figure is a pitch diameter for the reference circle of each meshing gear to each gear meshing graph of a relation in the action distributor gear, the circle that with dashed lines marks is that pitch diameter is less than this pitch diameter, and be pitch diameter by the gear compound graduation circle that it covers, all lower floor's reference circle parts that is covered by upper strata chain-dotted line circle all dot, and below no longer heavily chat).

The present invention is to brush automatic tooth-brush, a kind of concrete preferred handle of using, shown in the accompanying drawing I, it is the slightly plastic casing of ovalize of the slightly tapered cross section in a kind of two ends, can be little with having certain mechanism intensity, rigidity, forming technology morphotropism and contractility, but and various engineering plastics (as ABS, lucite, polystyrene etc.) injection mo(u)lding with fine adhesive property.It comprises procapsid (28) and back casing (26); (28) and between (26) use thread connection, seal with rubber ring (22) in the connection place.Dress action distributor gear and pedestal in fore shell (28) left end.Needs for injection mo(u)lding (adopting side to take out heart injection mold or Hough mode structure) technology and spare and accessory parts assembling, procapsid (28) is made the left end upper opening, Lower Half is made illustrated shape (analysing and observe as cutaway view, accompanying drawing 2C-C under the accompanying drawing I, shown in the DYRD cutaway view).The right part of housing upper left quarter part and brush body backplate (1) is by bonding fusing, and the common action distributor gear case that is the cervical region profile that forms in both bonding backs wherein is provided with the pedestal as bent axle.The wall shape bent axle frame that two groups of projectioies are arranged in procapsid (28) the left end cervical region, i.e. front axle bracket (seeing with reference to accompanying drawing 2C-C cutaway view) has the groove in 2mm gap between these two groups of front axle brackets, wherein can inject leakproof oils and fats (as the lithio butter) etc.Brush body backplate (1) uses two component bonding agents (as quick epoxy glue) and cementing agent (as chloroform) to make it to weld sealing with said pedestal adhering and sealing and with the cervical region both sides respectively in the pedestal top and the cervical region junction of housing left end.Because the adhering and sealing effect of bonding agent and cementing agent, can stop when brushing teeth outside water along in the seam crossing infiltration housing.Since bent axle and pedestal be rotatably assorted the gap between 0.02 to 0.04mm, be marked with the thickness oils and fats between two-layer front axle bracket in the 2mm gap, between axle and pedestal, produce the thin oil film of one deck, the butter of smearing just as each bearing shell place of bicycle can not leak), thereby the problem in greasy dirt tooth and oral cavity also can not appear.Owing to adopted the heavy-gravity water shutoff method of semisolid, made the bent axle that connects brush body when rotating, not have the loss of moment of torsion.Because it is shorter that bent axle passes the length that the pedestal of its right-hand member stretches out, when being in engagement gear down, cause the strain of bent axle right side external part minimum at transmission rotating speed and moment of torsion when fixed thereon.The procapsid middle part is the gear reduction box body, it is that 1.8mm, centre-to-centre spacing are two dead eyes (shown in upper and lower two cutaway views of accompanying drawing I) of 9mm that this casing left end (to ending with body brush backplate (1) joint, the hatching direction variation of connecting position cutaway view under the accompanying drawing I) wall has diameter; This casing right-hand member is one and tightens with tapping screw, and the right tank wall (33) of packing into the interference fits mode, with on its left end position that fixedly tank wall is relative two identical axis holes are also arranged, common reach and bearing make axle in the reduction box and the gear on axle steady operation betwixt.It is the circular hole of 6.5mm that there is a diameter at right tank wall (33) center, is the assembly technology hole of motor shaft and motor gear (17) of packing into.

The procapsid right-hand member is a motor both positive and negative polarity contact plate (21) near the screw thread place, and this contact plate stationary fit is pressed into the procapsid right-hand member, and is provided with convex-concave position, location at circumferencial direction, makes it to be difficult for moving axially and to rotate along axle.The flexible copper sheet in contact plate (21) centre (23) contacts with positive source, and an elastic contact chip (29) of often opening on copper sheet (23) and the switch electrically connects, and then links by the utmost point of lead (32) with motor.It is that the copper ring (24) of 4mm touches with the elastic wire (25) that is loaded on the intravital spring of back cover and fuse with spring that there is a width contact plate right side near the circumference place, and this copper ring joins with another utmost point of motor again.It is slightly tapered that the back casing of said toothbrush tenon (26) profile is cut circle, and cylindrical cavity is arranged in it, and its rear end right-hand member has a bonnet (27), be pressed into son, female mouthful of location between bonnet (27) and the back casing (26), and brushing cementing agent sealing before being pressed into.In the pore of back casing (26) shell wall or stria, be installed with the cathode wire (25) that is connected with spring before the sealing-in, the part that the cathode wire right-hand member stretches out links to each other with the spring that is in bonnet (27) inner face central authorities, leans on the elastic force of spring that the battery that is placed in the back casing (26) is withstood on forward on the anodal contact plate (23).Cathode wire from back casing (26) left end stretch out the back crooked 90 ° in the crooked again 90 ° of apertures that reenter wherein in 3mm place, formation protrudes from a section lead of back casing left side.Like this, after back casing (26) screws by the female thread that is threaded into procapsid (28) right-hand member on its left end cylindrical, cathode wire just be fixed on procapsid (28) right-hand member positive and negative electrode contact disc on copper ring (24) reliably contact.This structure can avoid changing that the phenomenon of loose contact takes place behind the battery.On the annular boss outside back casing (26) the left end screw thread, a cannelure is arranged, be pressed into a rubber ring (22) in the cannelure, when back casing and procapsid screw, rubber ring (22) is compacted make before and after housing seal, the water of shell outside can not infiltrated at two shell seam crossings.

A kind of concrete power source that preferably brush automatic tooth-brush is used of the present invention is common No. 2 batteries (38) of 1.5 volts at a joint as shown in analysing and observe on the accompanying drawing I, and the battery external diameter is 25mm, puts it in back casing (26) cavity by its shaped design.Battery (38) is packed into and is pressed to positive extreme direction by the spring that links to each other with cathode wire (25) in the back casing (26).The positive pole of battery when current back casing screws (38) contacts with spring copper sheet (23) on the electrode contact plate (21), makes its electric current can offer motor (20) at any time reliably.Between battery external diameter and back casing internal diameter certain interval is arranged, be convenient to pouring out and packing into of battery.

The concrete a kind of driver part that preferably brush automatic tooth-brush is used of the present invention, shown in cutaway view on the accompanying drawing I, be the micromachine (20) (for example electric shaver or toy for children use) of an external diameter less than 24mm, be 1.5 volts its service voltage, 50 milliamperes in electric current, 5000 rev/mins of rotating speeds.Motor (20) is with the interference fits mode procapsid right-hand member of packing into.On the front end of motor (promptly the exporting axle head) housing positioning round orifice is arranged, reduction box right end plate (33) goes up the right-hand member step-like cylinder of the relative protrusion in positioning round orifice position therewith in procapsid, and the restriction motor housing rotates in housing and play forward; The motor rear end face is withstood by electrode contact disc (21), makes it and can not retreat.One utmost point of motor connects with copper ring on the electrode contact disc (21), one of the elastic copper sheet of often opening in another utmost point and the switch (39) link to each other, release knob (30) is when pushing away left, be between two copper sheets (39), (29), the metal column (31) that is fixed on the release knob (30) is connected these two the copper sheet electricity that separate, wherein sheet metal (39) is connected with the copper ring on the electrode contact disc, one utmost point of sheet metal (29) and motor is connected, like this by release knob forward (backward) propelling and retreat startup and the stall of controlling motor.Fixed installation one plastic gear (17) on the axle that the motor left end stretches out is as transition gear (18) engagement of moment of torsion output gear and reducing gear.The centerline of motor and moment of torsion output gear (17) is on the centre position of reducing gear axis I (19) and axle II (16) centreline space.Gear (17) is made by engineering plastics (as polyformaldehyde, nylon 6 etc.) with following said each parts middle gear, and modulus is 0.5mm.The pitch radius of gear (17) is R=2mm, and the number of teeth is Z=8, and the gear axial length is 5mm.

The present invention concrete preferably to brush automatic tooth-brush with a kind of reducing gear of institute as up and down shown in the cutaway view of accompanying drawing I, be the closed spur gear multiple-stage reduction unit that is placed in the casing of procapsid (28) and right end plate (33) formation.Procapsid (28) first member plate and right end plate (33) between two rooted tooth wheel shaft (19) and (16) of packing into, two distance between axles are from being 9mm.Axle (16) is 2mm with the diameter of gear mating part in tank wall, and the section diameter that inserts left and right sides tank wall and end plate is 1.6mm, makes this axle can not axial float in casing.Axle I (19) also is 2mm with the diameter of gear mating part in tank wall, the diameter that insertion and left end stretch out tank wall also is 1.6mm, but with the matching relationship of tank wall and end plate for movingly, make axle (19) though can not axial float in tank wall, free to rotate.Axle (19) left end stretches out fixes a gear (11) (axle is identical with the fixing means of gear on fixing means and the following said action distributor gear, omission herein) on the outer position of case.Available No. 30 to No. 45 simple and easy the making of cold drawn wire of these two axles.Right-hand member at axle (19) is installed with the transition gear (18) that is slidingly matched with it, and gear (18) axial length is 10mm, can go up at axle (19) and freely rotate.Gear (18) right-hand part and motor output gear (17) engagement.The pitch radius of motor output gear (17) is 2mm, the number of teeth is 8, the pitch radius of transition gear (18) is 2.5mm, the number of teeth is 10, then the wheelbase of two gears (17) and (18) is from being 2mm+2.5mm=4.5mm, and the centrage of motor output gear (17) is on the centre position of axle (19) and axle (16) centrage, and promptly 9mm ÷ 2=4.5mm place meets the engagement requirement.Partly mesh with the gear wheel that is on the joint shaft gear (15) that is slidingly matched of axle (16) right-hand member the left side of transition gear (18).The right-hand part of gear (15) be its axial float of control, the external diameter radius is less than 2mm, the boss that do not touch with other toe joint, this gear wheel part pitch radius that is in joint shaft gear (15) middle part is R=6.5mm, tooth number Z=26, axial length is 4mm, the wheelbase of it and transition gear (18) is 6.5mm+2.5mm=9mm, promptly equals the wheelbase between axle (19) and spool (16).Form the engagement of slowing down between gear wheel on the joint shaft gear (15) and the transition gear (18).Joint shaft gear (15) left part is pitch radius R=2.5mm, the pinion of tooth number Z=10.What be in that axle (19) is gone up and transition gear (18) left side is close is the joint shaft gear (14) that is slidingly matched with axle (19), and joint shaft gear (14) right-hand part is pitch radius R=6.5mm, the gear wheel of tooth number Z=26.Like this, the engagement of the gear wheel of the pinion of joint shaft gear (15) left side and joint shaft gear (14) right-hand part has formed the same deceleration meshing relation of another level.Axle (16) is gone up left part a joint shaft gear that is slidingly matched with it (13) again, and its same joint shaft gear (14) has formed the same deceleration meshing relation of another level together.Axle (19) left end has a gear wheel that is fixed together with it (12), and its pitch radius is R=6.5mm, tooth number Z=26.Stamp out a protruding key on the axial region position cylindrical of fixed installation gear (12), make gear (12) when penetrating axle (19) this section in the stationary fit mode, not produce relatively rotating between gear and the axle.

As above said, the moment of torsion of motor output is through driving axle (19) output once more from reduction box by gear wheel (12) behind the multi-stage speed-reducing.

Above the identical M=0.5mmm that is of said each module; Its number of teeth:

Motor output gear (17) Z=8

Transition gear (18) Z=10

Joint shaft gear (15) bull wheel Z=26

Steamboat Z=10

Joint shaft gear (13) bull wheel Z=26

Steamboat Z=10

Joint shaft gear (14) bull wheel Z=26

Steamboat Z=10

Gear wheel (12) Z=26

Then speed reducing ratio is:

Transition gear (18): motor output gear (17)=10: 8=1.25;

Joint shaft gear (15) gear wheel: transition gear (18)=26: 10=2.6;

Joint shaft gear (14) gear wheel: joint shaft gear (15) pinion=26: 10=2.6;

Joint shaft gear (13) gear wheel: joint shaft gear (14) pinion=26: 10=2.6;

Gear wheel (12): joint shaft gear (13) pinion=26: 10=2.6;

Motor speed is 5000 rev/mins, and promptly motor output gear (17) rotating speed is 5000/ minute;

The rotating speed of the rear axle (14) that then slows down output is:

5000 rev/mins of ÷ (1.25 * 2.6 * 2.6 * 2.6 * 2.6)=87.53 rev/min kind

Know that by aforementioned calculation behind multi-change speed, reducing gear provides necessary rotating speed and moment of torsion for the work of brush body.

A kind of concrete preferred action distributor gear of the present invention is as analysing and observe on the accompanying drawing I of amplifying, (appeared the part of piece number in the acceptance of the bid of accompanying drawing I shown in the DYRD cutaway view and DOHE cutaway view of following cutaway view and accompanying drawing 2, when in accompanying drawing 2, accompanying drawing 3, accompanying drawing 4, reappearing, label all adds draws together ()), by an end (right-hand member) respectively be fixedly connected by by two groups of the particular form meshed gears totally four bent axles form.By one one end is major axis (right-hand member), and the other end is a minor axis, and mid portion is that full bent axle (4) and a right-hand member of moving outside shaft centre line is parallel are major axis, is punctured into half bent axle (5) that has only 2mm length at pars convoluta, body brush bent axle group on the composition.(blocked respectively by full bent axle (4), half bent axle (6) in the accompanying drawing I by shape and size and the complete identical full bent axle of bent axle (4) (37), only in the C-C of accompanying drawing 2 cutaway view, DYRD analyses and observe, its cross section shown in the DOHE cutaway view) identical with shape with semiaxis (5), but different half bent axle (6) of right-hand member length is formed body brush bent axle group down.In the two suite axles, the full bent axle in every suite axle by separately the driving shaft of company's body brush, half bent axle by control separately the Control Shaft that moves by required mode of company's body brush.

Between right pedestal of handle procapsid (28) cervical region and reduction box left side tank wall, form action distributor gear gear-box.This case middle gear is divided into three layers from right to left, right layer is the pinion in individual gears and the joint shaft gear, the middle level is two gear wheels on the joint shaft gear, left side layer is the pinion in individual gears and the joint shaft gear, the middle level has only two gear wheels on the joint shaft gear to be the diagonal engagement in rectangular lattice, and right layer and left side layer are the pinion on individual gears and the joint shaft gear.The d-axis partial-length difference of in four axles, stretching out to the right from procapsid (28) cervical region, wherein two full bent axles are by pinion in its right layer gear and the pinion on the joint shaft gear, two and half bent axles are by the pinion of its left side layer gear and the pinion on the joint shaft gear, full bent axle (4) is gone up fixed joint shaft gear (9) and is meshed with the gear wheel that semiaxis (6) is gone up on the fixed shaft coupling in the middle level, just full bent axle (4) is gone up the pinion of fixed joint shaft gear (9) at right layer, and gear wheel is in the middle level; And half bent axle (6) is gone up the pinion of fixed joint shaft gear (8) at left side layer, gear wheel is in the middle level, so as can be seen, four bent axles are in above said four dot matrixs, by the engagement that is in line between the satisfactory to both parties bent axle, the engagement that also is in line between the two halves bent axle, and wherein full bent axle becomes the diagonal engagement with one and half bent axles wherein, and formed direct and indirect complete meshing relation.That is to say that when the gear on axle in four bent axles and the axle rotated, other three axles can rotate simultaneously.Because two full bent axles (4), (37) are by the pinion of right layer in the action distributor gear gear-box and the little tooth engagement on the joint shaft gear, thereby two full bent axles are the longest from the length that the right pedestal of procapsid (28) stretches out to the right, and equate.And the length that half bent axle (6) stretches out to the right from the right pedestal of procapsid (28) only reaches the middle part of this action distributor gear gear-box, and promptly joint shaft gear (8) is gone up the place, right side of gear wheel; The fixed pinion of half bent axle (5) right-hand member (7) only and the last pinion of fixed joint shaft gear left part of the left side layer of action distributor gear gear-box and half bent axle (6), thereby half bent axle (5) to stretch out the length that the right pedestal of procapsid (28) cervical region stretches out to the right the shortest, have only the length of a pinion.

The relative position of two suite axles is shown in the C-C cutaway view of accompanying drawing 2, DYRD cutaway view.Be fixedly mounted on the relative position of the gear of each bent axle one end (right-hand member) and reduction box axle (19) output gear (11) and meshing relation shown in attached Figure 4 and 5.From accompanying drawing 4 as can be seen, gear (11) is 9 ÷ 2=4.5mm to the distance at center between two bent axle groups, and the centre-to-centre spacing of two bent axle groups is 6mm, promptly fixes the pinion pitch radius R=3mm on it; The centre-to-centre spacing of full bent axle and half bent axle is 5.5mm in every suite axle.Full bent axle (4) is 3mm+2.5mm=5.5mm with the centre-to-centre spacing of reduction gearbox output shaft (19), the pinion that promptly is fixed on the last right layer of joint shaft gear (9) on the full bent axle (4) is R=3mm with the pitch radius, it is R=2.5mm with the pitch radius that the parameter of tooth number Z=12 and reduction gearbox output shaft (19) are gone up fixed pinion (11), the relation engagement of tooth number Z=10, thus make the full bent axle (4) that is fixed together with joint shaft gear (9) obtain required rotating speed and moment of torsion.

From the DOHE cutaway view of accompanying drawing 2 as can be seen, fixedly on the pinion of going up right layer by joint shaft gear (9) and full bent axle (37) right-hand member that passes down brush body mesh with number of teeth gear (10), it is opposite with full bent axle (4) direction that full bent axle (37) is obtained, the moment of torsion that rotating speed is identical.

The upper and lower cutaway view of contrast accompanying drawing I and the DYRD cutaway view of accompanying drawing 2 are as can be seen, be fixed on gear wheel (the pitch radius R=4mm of full bent axle (4) right-hand member joint shaft gear (9), the parameters relationship of tooth number Z=16) and half bent axle (6) that links with following body brush (3) activity go up gear wheel (the pitch radius R=4mm of the fixed joint shaft gear of right-hand member (8), tooth number Z=16) engagement, it is opposite with full bent axle (4) direction to make that half bent axle (6) that links to each other with following brush body (3) has, the moment of torsion that rotating speed is identical; As above said, it is opposite with full bent axle (4) direction that full bent axle (37) is also had, and it is identical that the moment of torsion that rotating speed is identical, half bent axle (6) and bent axle (37) entirely have direction, and the moment of torsion that rotating speed is identical forms a pair of bent axle group.

From the DYRD cutaway view of accompanying drawing 2 as can be seen, go up fixed joint shaft gear (8) at half bent axle (6) that links with following brush body (3) activity, left side layer is a pinion, its (pitch radius R=3mm, tooth number Z=12) with pinion (7) (the pitch radius R=3mm that is fixed on half bent axle (5) right-hand member, tooth number Z=12) engagement, thus it is opposite with half bent axle (6) direction that half bent axle (5) is obtained, the moment of torsion that rotating speed is identical.As a same reason, it is identical with full bent axle (4) direction that half bent axle (5) is obtained, and the moment of torsion that rotating speed is identical forms another bent axle group, and makes two bent axle group rotating speeds identical, and direction is opposite.

In addition, as above said, tooth number Z=10 of reduction gearbox output shaft gear (11), and be fixed on the pinion number of teeth Z=12 that the right layer of full bent axle (4) right-hand member joint shaft gear (9) is engaged with, therefore, the rotating ratio of gear (9) and (11) is: 12 ÷ 10=1.2, because the rotating speed of output gear (11) is 87.53 rev/mins, then the rotating speed of each bent axle is: 87.53 rev/mins ÷ 1.2=72.94 rev/min.

The working speed that is each bent axle is about 73 rev/mins.

From the above, it is opposite to obtain direction between last brush body bent axle and the following brush body bent axle group, the rotating speed that per minute 73 changes, and this is to facilitate two brush bodies precondition of alternating movement in opposite direction.

From the B-B cutaway view of A-A, B-B cutaway view and the accompanying drawing 3 of accompanying drawing 2 as can be seen, two suite axles all differ 180 ° of angles constantly in each of motion, and this is the condition that two brush bodies alternately utilize locus in the brush body backplate.

For ease of representing that in accompanying drawing and description four bent axles are by rectangular arrangement in the accompanying drawing, such design is feasible.But in actual design with in making, for avoiding causing the collision that reaches between the gear between gear and the axle better because of foozle, the wheelbase that makes two full bent axles that can design still is 6mm, and the wheelbase between two and half bent axles dwindles (for example 5mm), wheelbase between half bent axle and the full bent axle strengthens (for example 5.8mm), shown in the chain-dotted line circle of accompanying drawing 5.

Brush body to brush automatic tooth-brush of the present invention, upper and lower cutaway view, A-A, B-B in the accompanying drawing 2, F-F cutaway view as the accompanying drawing I, and shown in two B-B cutaway views of accompanying drawing 3, be by the symmetric strip brush of the pair of planar that bristle is housed on lucite and so on injection molding, the brush holder (2), (3).There is the bristle hole of two row's certain depths in each brush holder front, plants bristle with bristle-fixing machine on it.In brush body (2).(3) longitudinally there is the elongated slot of an opening at the back, be semi circular surface at the inner groove surface relative with opening, its arc radius identical with crank throw (nominal size is identical, but and should leave the suitable gap that is slidingly matched between the bent axle) respectively has recessed arcuation locating groove on the elongated slot two sides.There is the profile protruding arcuation muscle identical with locating groove cutting (35), (36) both sides of cooperating with elongated slot, and the circular-arc concave groove identical with the crank throw nominal size arranged at this cutting bottom.Said cutting can be inserted from the recessed locating groove of the arcuation of brush body along its arcuation muscle, forms the circular port that the parallel-segment of full deflection of crankshaft part is lived admittedly on brush body, forms the connection of two halfliner formulas.In addition, one small embossment (shown in the F-F of accompanying drawing 2 analyses and observe) is arranged on brush body (3), (4) elongated slot one end side surface, transplanting a cutting on (35), (36) correspondingly, respectively there is a female both sides at position, it plays locking action after body brush is inserted in cutting, promptly need from brush body (3), (4), to insert cutting (35), (36) or to extract with the power of certain gram number, like this, both guaranteed that brush body with respect to the bent axle stable rotation, was convenient to the brush body that more renews again.

Brush body (3), (4) right-hand member have one section thick protruding wall of 2mm near the part of bristle, hole identical with half deflection of crankshaft part minor axis diameter and that be slidingly matched is with it arranged on the protruding wall, and the centre-to-centre spacing of full bent axle and half bent axle is identical in the centre-to-centre spacing of this hole and brush body back bearing shell formula through hole and the every suite axle.Like this, when the full bent axle of this suite axle and half bent axle synchronizedly run, the brush body that is attached thereto just this suite axle drive and control under the mode of carrying out shown in accompanying drawing 3 right cutaway views move.Because brush body also is subjected to the control of half bent axle, this half bent axle is synchronous, equidirectional with its full bent axle on the same group again, and same rotating speed rotates with under the bending radius, and brush body is not only turned round by full crank-driven like this, but also is subjected to half bent axle control on the same group.Therefore, brush body each face at the volley moves by original orientation is parallel all the time, does not produce angle and changes.So, even bristle when brushing teeth on the brush body and tooth friction are obstructed, every pinch of bristle all can move by its original direction is parallel, the bristle flop phenomenon can not occur.This is that the present invention is to one of main points on the brush automatic tooth-brush manner of execution.

Chain-dotted line circle in the accompanying drawing 3 on the right figure of B-B cutaway view is every bristle track at the volley; Recess the track that moves to the tooth root direction gradually behind the tooth for bristle on the W-W line; The movement locus of brushing teeth from tooth root contact tooth for bristle under the W-W line.Because backplate (1) is put into the oral cavity and is affixed on cheek place; it is protecting body brush (2), (3) to make it at the volley not can direct collision cheek (minimizing unnecessary power loss); and because there is elastic pressure in cheek muscle to brush body backplate (1); at any time regulate the size of bristle and flank of tooth contact force or the degree of depth of in slot, inserting; so; when bristle begins to stretch into the teeth roots slot and when crown moves by the W-W line; cheek muscle is oppressed brush body backplate (1), and makes bristle further stretch into the slot of tooth root portion by it.When bristle continues lower half circle track along circular arc line among this figure when the crown place transfers, as can be seen from the figure, if the fixed distance between the cheek muscle and the flank of tooth is constant, the bristle lengths that stretches into so in the slot will further increase.But a part is suitably crooked in fact every row brush hair, have only unbending part bristle can enter slot, the bristle that does not enter slot impels the body brush backplate to overcome the contractility of cheek muscle to shrinking back away from the direction of tooth face because of the recurvation commentaries on classics power sensing brush body back direction that bending occurs.After the bristle ends track was through peak (being minimum point among this figure), bristle reduced the pressure of the flank of tooth thereupon, and this moment, the pressure of cheek muscle made bristle continue to stretch into slot again.The autoregulation of pressure makes bristle in 6mm teeth directional length brush journey (the track diameter that bent axle circles) between this bristle and the tooth, can keep bristle suitably to stretch into the roughly stable degree of depth of slot all the time.In fact begin to contact tooth from bristle and finish to withdraw from until a brush journey and end, bristle can rub with tooth in suitable stretching under the degree of depth.

The present invention is to a kind of concrete preferred accessory of brush automatic tooth-brush, upper and lower cutaway view as the accompanying drawing I, shown in the B-B cutaway view of the A-A of accompanying drawing 2, B-B cutaway view and accompanying drawing 3, left end has two axis holes, the back becomes palisade, and right-hand member is procapsid (a 28) cervical region part and action distributor gear gear-box loam cake.As above say so is bonded on the procapsid with bonding agent and cementing agent sealing.Two bearing blind holes of its left end are the spring bearings of full bent axle (4), (37); It is not interrupted that back palisade backplate had both protected brush body to move in the oral cavity, regulates bristle with cheek muscle automatically and stretch into the slot degree of depth, is convenient to brush body again and changes and get rid of dirt and moisture content.

With reference to the upper and lower cutaway view of accompanying drawing I, accompanying drawing 2 each cutaway view and accompanying drawing 3 are described as follows to the using method of brush automatic tooth-brush and the action under the user mode in the present invention:

Install power supply, grasp handle, with finger push push button (30) power connection, motor rotation, moment of torsion is turned round by gear and gear shaft that gear (11) drives in the distributor gear after reducing gear slows down, at this moment two suite axles are pressed rightabout, under the situation at 180 ° of angles of phase phase difference with 73 rev/mins rotation speed operation.As above said such, brush body (2), (3) and on bristle also press the orbiting motion shown in the accompanying drawing 3 right cutaway views with the frequency in 73 weeks of per minute, operating frequency when this brush body movement velocity and common brushing teeth is approaching, the brush body movement velocity was both not too slow, or not fast yet, existing time enough is not spun out brushing time to the slot outwash again.

Analyse and observe the movement locus of bristle (only having marked the hair of both sides on the brush body the figure) finds out from accompanying drawing 3 right sides, distance between the both sides bristle on each brush body is more than 5mm, and its locus circle diameter is 6mm, therefore brush teeth in the action at every turn by brush and tooth length be 5mm+6mm=11mm, work as with the common tooth bulk phase of growing up.If tooth is longer, can touch whole tooth by doing slightly or following moving along the tooth length direction with the hand control handle; If tooth is shorter, then bristle can touch the crown of opposite tooth at each brush tooth action end.Because brush body backplate (1) width at the cross-sectional place of A-A in accompanying drawing 2 is 22mm, the width that is equivalent to two ordinary toothbrush, after automatic tooth-brush put into the oral cavity, it can only do a spot of moving in the cheek and between the upper and lower tooth, therefore go up brush body basically in the motion of upper tooth place, following brush body moves at the lower tooth place basically; The phenomenon that gums is up and down lifted by bristle can not appear in the last brush body bristle upper tooth that rubs from the top down, the following brush body bristle lower tooth that rubs from bottom to top.As long as both positive and negative polarity is not adorned mistake (back casing inner bottom part spring can only contact with battery cathode, and anode can only contact with spring contact plate (23)) during by packed battery, brush body and bristle motion direction just can be not wrong.In this case, only need when brushing teeth put into toothbrush that (molar place) slowly pulls out outward equably from the depths between the oral cavity cheek and the tooth, bristle on the brush body will be the outer flank of tooth of this side tooth of oral cavity, and slot all picks and cleans down, and the tooth root place can residual dirt yet.Every bristle equally works with regard to the dental floss of scraping teeth space that Dens Elephatis is signed or medical treatment is upward used.During the brush front tooth, contain backplate (1) outside side plate, just can regulate brush body and the bristle cleaning performance on the front tooth face well with lip.When brushing teeth the tooth inner surface, usefulness is identical with the outer flank of tooth of brush, as long as slightly firmly pin handle with hands, just can obtain the effect identical with the flank of tooth.When brushing teeth the tooth field of conjugate action, the bristle on two brush bodies all works the effect of brushing teeth, and does not have the problem of lifting gingiva.

Before the use, can be with the of short duration connection of push button switch, make that bristle is stopped at the isometry position shown in the accompanying drawing 3 on the brush body of both sides, toothpaste is coated with broadly on bristle, puts into oral cavity one side then, toothpaste promptly is distributed in the flank of tooth and bristle, last restart switch, brushes teeth in a manner described.

When bristle is damaged needs replacing brush body, operate as follows:

Of short duration connection cell switch makes full bent axle (4) go to crank portion and points to bristle direction position, position shown in the following cutaway view of accompanying drawing I;

Make the long groove round surface of body brush (2) be adjacent to the bent axle pars convoluta, push away brush body from left to right, the long sweep of half bent axle 2mm in this group is stretched in the dead eye on the thick concave wall of right-hand member 2mm that is in body brush (2).

Of short duration once more connection switch is adjusted this suite axle and is made it to rotate 180 ° of angles, inserts on the locating groove of the long trenched side-wall in back that is inserted in the brush body (2) on the bent axle and transplants a cutting (36), is inserted into from left to right to restrain to collapse to occur till the sound; With top same method another brush body is installed.

From accompanying drawing 2B-B cutaway view and accompanying drawing 3B-B cutaway view as can be seen bristle and body brush in the locational situation of different motion; In the right cutaway view of accompanying drawing 3B-B, right brush body (promptly going up brush body) (2) is in the interior right side of backplate (1), left side brush body (promptly descending brush body) (3) is in the interior centre position of backplate (1), movement locus this moment: it is left-handed along track with direction shown in the arrow of upper semi-circle that left side brush body (3) is pressed the W-W line, left brush body in 1/4 week back and bristle (3) move back in position shown in the accompanying drawing 2B-B cutaway view, change to forward the position shown in the cutaway view of an accompanying drawing 3B-B left side (promptly begin prepare to brush teeth position) left brush body (3) position intermediate in the backplate in this process after 1/4 week again to and withdraw from gradually again.Simultaneously, right brush body (2) bristle ends position is in below the W-W line shown in the right cutaway view of accompanying drawing 3B-B, and dextrorotation in the direction of the clock, move to the position shown in the accompanying drawing 2B-B cutaway view (1/4 week) gradually, move to the centre position shown in the cutaway view of an accompanying drawing 3B-B left side after changeing for 1/4 week again, this moment, brush body and bristle (2) were finished the action of once brushing teeth.Its brush journey is finished in the centre position that two brush bodies alternately occupy in the backplate (1) in this way.

From accompanying drawing 2B-B cutaway view as can be seen, when brush body (2) is in the half way of brush journey, difference in height maximum between two brush ends, promptly low brush end (the interior brush body of retraction backplate) is maximum with the distance of between cog, but high brush end this moment (promptly entering the brush body of the process of brushing teeth) is because the said result who is regulated by the elastic force of cheek muscle in front, and the degree of depth that enters slot is not big like this.After the right brush body process of brushing teeth was finished, two groups of bristles moved closer to (being the difference in height minimizing) with the distance of the flank of tooth.From accompanying drawing 3 right cutaway view tracks, find out, before left side bristle (3) the contact tooth, right bristle separates left bristle all the time from the flank of tooth, and when a left side, bristle ends on right two brush bodies is simultaneously during contact Tooth, left side brush body has begun to do the action of brushing teeth downwards, find out from the circular arc line of accompanying drawing 3 right cutaway view left ends, circular arc left side camber line reach before the W-W line and after, the action of this group brush end all has the quite a while and moves towards the flank of tooth apart from being bordering on directly, horizontal displacement is almost seldom arranged, the approximate flank of tooth and the slot of directly pointing to, therefore, bristle can reversely not lift gingiva before and after the contact tooth, and more helps extorting the root of slot.As mentioned above as can be known, after toothbrush of the present invention was put in the oral cavity, along with the motion of bristle and brush body, cheek muscle also can stretch passively, so cheek muscle has adjusting toothbrush pressure and bristle to enter the effect of the slot degree of depth.Adopt direct current micromotor as driver part among the present invention, when bristle runs into big resistance in slot, reduce because moment of torsion increases the movement velocity that makes brush body.This moment, the rotating speed of direct current generator also and then reduced, and counter electromotive force then increases, and it is big that the electric current that passes through in the motor coil becomes, then motor under the moment of torsion that lowers speed and increase, turn round, thereby overcome the big resistance that bristle runs into.When resistance that bristle ran into greatly when brush body is blocked, owing to the general power (strength) of micro machine is very little, the phenomenon of gingiva tooth can not appear injuring.In this case, as long as make bristle a little away from tooth, just can make it to recover running, the phenomenon that parts also can not occur damaging at this moment with holding brush holder.

During brush tooth inner face, handle is changeed 180 ° along its axis, bristle is stretched into brush teeth in the upper and lower tooth to get final product.When brushing the field of conjugate action of lower tooth, only needing changes 90 ° with brush holder respectively, and bristle is lain on the field of conjugate action, and the bristle on two brush bodies all can play a part to brush teeth.

As can be seen, have only two row brush hairs (child form have only a row) on each brush body from accompanying drawing 2B-B cutaway view, this toothbrush has 3-4 row hair to be easier to stretch into slot than ordinary toothbrush.If adopt soft bristle, little to the wearing and tearing of the flank of tooth, help protecting the flank of tooth, help preventing occurring behind the person in middle and old age phenomenon of dental caries ditch.As above said, of the present inventionly can change bristle and brush body easily to brush automatic tooth-brush, the volume of this bristle and brush body and materials are the part of ordinary toothbrush, price must be cheap more a lot of than ordinary toothbrush, from considering economically, be more suitable for often, in time changing brush body, help avoiding breeding antibacterial in the bristle, reduce the self-infectious chance that oral cavity, throat causes (medically require every, two toothbrushes uses by turns in the jede Woche) the longest use of toothbrush one month because of brushing tool.

From figure structure as can be seen, the 8-10 that the manufacturing cost of automatic tooth-brush of the present invention only is equivalent to homemade ordinary toothbrush doubly, price can be cheap relatively.Can reach (the component wear time) more than 100 hours the service life of automatic tooth-brush of the present invention (except the brush body),, use calculating in two minutes at every turn, can use continuously more than 4 years by brushing teeth twice every day.

The materials of automatic tooth-brush of the present invention and accessory as aneroid battery, micro machine, engineering plastics product, axle part, domesticly all can be made and be provided.

Obviously, by changing the size of brush body and bristle, can make all kinds product that is applicable to all ages and classes (comprising the child).

If in handle, add the electronic music device, can make the music automatic tooth-brush that the child likes.

Except that using battery and motor, also can adopt other power driving part, the Mainspring type power of for example using on phonograph storage and driving mechanism.Replace above-mentioned power source and driving mechanism, these change all within the scope of the present invention.

Claims (9)

1, a kind of to brush automatic tooth-brush, comprising power source, driver part, gear, action distributor gear, brush body and brush holder, it is characterized in that:

A. said power source is a power supply;

B. said driver part is by said power drives and by the micromotor of hand switch control;

C. said gear is a gear reduction of being exported certain rotating speed and moment of torsion by said Motor Drive with single shaft;

D. said action distributor gear is done the opposite rotation of direction by same rotational speed by two suite axles of its gear set drive through the rotating speed and the torque drive of said reducing gear output under certain phase contrast;

E. said brush body is a pair of removable brush that is subjected to said action distributor gear to drive and control, said two brush bodies are orientated constant relatively rotating successively by certain rotating speed down in working order, thereby make the bristle on the said brush body stretch out the back work from the inswept in opposite directions action of root of the tooth cuspad to the flank of tooth repeatedly;

F. assurance and lever that said brush holder is said toothbrush are again to hold and the fixedly seal casinghousing and the casing of a～e parts;

But also be provided with accessory.

G. it be reduce loss when being convenient to brush body and in the oral cavity, working and be convenient to regulate brush body and flank of tooth distance backplate and the gear-box loam cake and the brush holder chamber loam cake of said action distributor gear.

2, according to the said automatic tooth-brush of claim 1, it is characterized in that said power supply is aneroid battery or rechargeable battery, be installed in the said brush holder tail end back cover, make it to be connected with the flashlight type conducting structure with said micromotor.

3,, it is characterized in that said micromotor is installed in middle part in the said brush handle shell, connects with power supply by lead and hand switch according to right 2 said automatic tooth-brushs.

4, according to the said automatic tooth-brush of claim 3, it is characterized in that comprising the train of reduction gears that is in the said brush holder front shell, change making the mechanical movement of said driver part output under required rotating speed and moment of torsion, pass to said action distributor gear by its number of teeth.

5, according to the said automatic tooth-brush of claim 4, it is characterized in that wherein said action distributor gear comprise two suite axles, with every gear train and the pedestal that bent axle one end is fixedly connected; Every suite axle comprises a full bent axle and one and half bent axles, is used separately as to drive and control corresponding brush body motion; Wherein full crankshaft two end stretches and the parallel bending of mid portion of a close end, the sweep of two end axles central lines comprises two vertical sections and the parallel-segment with respect to shaft centre line, and said parallel-segment drive brush body is that circular motion is made in the center of circle with the shaft centre line when full bent axle rotates; Wherein half bent axle, one end stretches and the parallel bending of the other end, and the two end axles centrage is parallel, and sweep comprises a vertical section and the parallel-segment with respect to shaft centre line, and it is constant to control corresponding brush body bristle orientation when making circular motion during rotation; The gear that stretches the part end in every bent axle one side that is fixedly connected intermeshes, and makes two suite axles do rightabout rotation under 180 ° of angular phase differences with same rotational speed; The output gear of fixed gear and said gear reduction engagement on full bent axle, and pass to this three axles by desired rotating speed of gear and the direction that is fixed on other three axles.The longitudinal end of bent axle d-axis part is supported in the axis hole that inserts support on the brush handle shell neck brace, and the minor axis end of full bent axle cambered axle part is through in the axis hole of said accessory one side.

6, according to the said automatic tooth-brush of claim 5, it is characterized in that vertically there is the manhole that is formed by semicircle bearing shell and bearing shell cutting at said brush body back, the parallel-segment of full deflection of crankshaft part is passed wherein; Near on bristle one side end face half outstanding bent axle axis hole is arranged, the free end of half bent axle inserts wherein; Said through hole and axis hole respectively and between full bent axle and half bent axle for being slidingly matched, make brush body along with the axle of bent axle do the bristle orientation constant be the circular motion at center with bent axle d-axis part centrage.

7,, it is characterized in that said brush holder is a seal casinghousing, comprises procapsid and back casing according to the said automatic tooth-brush of claim 6; Front and back housing utilization is threaded and is sealed to the power capacity case with rubber seal; Be provided with in the procapsid active clapboard and stationary barrier form respectively micromachine storage box and reducing gear gear-box and with the gear-box and the brush holder neck chamber of the common action distributor gear middle gear that forms of accessory, the dividing plate in the neck chamber still is the pedestal of bent axle; Wherein also be provided with the lead and the on and off switch that connect power supply and motor.

8, according to any one said automatic tooth-brush in the claim 1～7, it is characterized in that said accessory one end has two axis holes that support two full deflection of crankshaft part minor axises, the other end is brush holder neck chamber and action distributor gear gear-box loam cake, the back becomes palisade, utilizes the sealing of binding agent and cementing agent and brush holder procapsid bonding; Said brush holder neck has two-layer stationary barrier away from the bonnet end in the chamber, and little gap is arranged therebetween, and the axis hole of supporting four bent axles is arranged on this stationary barrier, forms double-deck front axle bracket, injects the leakproof oils and fats in the gap between two walls and makes the sealing of the brush holder other end.

9,, it is characterized in that wherein said according to the said automatic tooth-brush of claim 8:

Battery is 1.5 volts of No. 2 batteries;

Micromachine: 1.5 volts of voltages, 50 milliamperes in electric current, rotating speed 5000/ minute;

The rotating speed of reducing gear output: 87.53 rev/mins;

The rotating speed of bent axle is about 73 rev/mins, 180 ° of angles of two suite axle phase contrasts in the action distributor gear;

Brush holder engineering plastics injection mo(u)lding, two ends are slightly tapered, and cross section is ovalisation slightly;

Two row brush hairs have been planted in brush body lucite injection mo(u)lding on the brush holder.

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