CN100349555C

CN100349555C - Electric toothbrush

Info

Publication number: CN100349555C
Application number: CNB021311412A
Authority: CN
Inventors: 颛清平
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-10-11
Filing date: 2002-10-11
Publication date: 2007-11-21
Anticipated expiration: 2022-10-11
Also published as: CN1488323A

Abstract

The present invention relates to an electric toothbrush which comprises a replaceable flock group which can rotate back and forth, a main body, a motor fixed in a main body, a support part connected with the main body, a flock group which is detachably connected with the support part, and a transmission mechanism, wherein the transmission mechanism connected with the motor is driven by the motor to provide rotational motion for the flock group; the support part comprises a first connecting component; the flock group comprises a second connecting component; one of the two connecting component comprises a long body of which the outer surface is provided with an outer ring groove, and the other connecting component comprises at least one detachable projecting part which is used for being matched with the outer ring groove. In addition, the electric toothbrush also comprises a motion converter which is detachably connected with the flock group, and the motion converter converts the single-direction rotational motion of the transmission mechanism into reciprocating rotational motion used for driving the flock group.

Description

Electric toothbrush

Technical field

The present invention is a kind of electric toothbrush.This electric toothbrush contains the pieces group that can back and forth rotate.Say that on the other hand the present invention contains the removable pieces group that can back and forth rotate.

Technical background

Good cleaning effect makes electric toothbrush more and more receive an acclaim.In general, electric toothbrush comprises a matrix that is used as handle, and elongated portion that stretches out from matrix and one are positioned at the pieces group (being head toothbrushes) that is made of many toothbrush pieces of far-end.Further, comprise that also is positioned at a basic intravital motor, and a drive mechanism that is positioned at matrix and elongated portion.In use, motor provides rotational energy to drive mechanism, and then drives the rotation of pieces group by drive mechanism, thereby realizes the effect of cleaning teeth.

Because the pieces group of electric toothbrush wearing and tearing can take place after using after a while or produces antibacterial, the pieces group just needs to change.At present, a lot of electric toothbrushes provide one to comprise pieces group and elongated portion field-replaceable unit together, and these parts can be connected with the handle matrix of electric toothbrush and can pull down replacing, thereby make the pieces group to change by changing these parts.Yet so, the cost of changing the pieces group improves greatly owing to also need change elongated portion simultaneously.Because what in fact need to change has only the pieces group.

Summary of the invention

The present invention is a kind of electric toothbrush.This electric toothbrush comprises a main body, a motor that is mounted in the aforementioned body, a pieces group rotatably links to each other with aforementioned body, and a drive mechanism and motor links and driven by motor, and above-mentioned drive mechanism is used for providing rotational motion for the pieces group.This electric toothbrush also comprises a converter, and this converter is connected with above-mentioned pieces group and can rotates freely around a central axis, and with above-mentioned drive mechanism sliding connection.Above-mentioned converter is changed into the unidirectional rotary motion of drive mechanism and is driven the needed crankmotion of pieces group.

On the other hand, be a kind of electric toothbrush that contains replaceable pieces group among the present invention.This electric toothbrush comprises a main body, a motor that is mounted on body interior, a support unit that connects mutually with main body, pieces group that removably is connected with above-mentioned support unit and one link with motor and are driven by motor and is used for providing for the pieces group drive mechanism of rotational motion.Above-mentioned support unit comprises one first and connects the member, and the pieces group comprises one second connection member.Two connect one of members and contain a longitudinal bodies, and its outer surface has an outer groove, and another connects member and then contains at least one ledge, are used for matching with above-mentioned outer groove being connected also and can throwing off.

On the other hand, the present invention is a kind of electric toothbrush.Comprise a main body, one is mounted on main intravital motor, a support unit that connects mutually with main body, one links to each other with above-mentioned support unit and removable pieces group, one links with motor and is driven by motor and is used for providing for the pieces group drive mechanism and a converter of rotational motion.Above-mentioned converter can removably be connected with the pieces group, and the unidirectional rotary motion of drive mechanism is changed into crankmotion, and then driving pieces group is done reciprocal rotary oscillation.Furtherly, above-mentioned support unit comprises that one first connects the member, and the pieces group comprises one second connection member.Two connect one of members and have a longitudinal bodies, and its outer surface has an outer groove, and another connects member and then contains at least one ledge, are used for matching with above-mentioned outer groove being connected also and can throwing off.

Description of drawings

For understanding the present invention better, reach more clearly to express and how to implement, now only illustrate, provide with the present invention corresponding with reference to the accompanying drawings representative.As shown in the figure, wherein

Fig. 1 is the three-dimensional view of an electric toothbrush;

Fig. 2 is a side sectional view about electric toothbrush shown in Figure 1;

Fig. 3 a is a blast fragmentary side cross-sectional view about electric toothbrush shown in Figure 1, mainly expresses a pieces group and a converter;

Fig. 3 b is a three-dimensional bottom view of blast about pieces group shown in Fig. 3 a and converter;

Fig. 3 c is a blast three-dimensional view about local electric toothbrush shown in Fig. 3 a;

Fig. 4 a is a blast fragmentary side cross-sectional view about electric toothbrush shown in Figure 1, a kind of replacement scheme of pieces group and converter shown in the presentation graphs 3a;

Fig. 4 b is a three-dimensional bottom view of blast about pieces group shown in Fig. 4 a and converter;

Fig. 4 c is a blast three-dimensional view about local electric toothbrush shown in Fig. 4 a;

Fig. 5 a is a fragmentary side cross-sectional view about electric toothbrush, expresses another replacement scheme about above-mentioned pieces group and converter;

Fig. 5 b is a blast fragmentary side cross-sectional view about Fig. 5 a;

Fig. 5 c is a blast three-dimensional cutaway view about local electric toothbrush shown in Fig. 5 a;

Fig. 5 d is a blast partial perspective view about local electric toothbrush shown in Fig. 5 a;

Fig. 6 a is a fragmentary side cross-sectional view about electric toothbrush shown in Fig. 3 a, represents that the eccentric output shaft end of its drive mechanism is in 12 o ' clock positions of clock and watch;

Fig. 6 b is a partial top cutaway view about electric toothbrush shown in Fig. 3 a, represents that the eccentric output shaft end of its drive mechanism is in 12 o ' clock positions of clock and watch;

Fig. 6 c is a partial bottom cutaway view about electric toothbrush shown in Fig. 3 a, represents that the eccentric output shaft end of its drive mechanism is in 12 o ' clock positions of clock and watch;

Fig. 6 d is a fragmentary side cross-sectional view about electric toothbrush shown in Fig. 3 a, represents that the eccentric output shaft end of its drive mechanism is in 3 o ' clock positions of clock and watch;

Fig. 6 e is a partial top cutaway view about electric toothbrush shown in Fig. 3 a, represents that the eccentric output shaft end of its drive mechanism is in 3 o ' clock positions of clock and watch;

Fig. 6 f is a partial bottom cutaway view about electric toothbrush shown in Fig. 3 a, represents that the eccentric output shaft end of its drive mechanism is in 3 o ' clock positions of clock and watch;

Fig. 6 g is a fragmentary side cross-sectional view about electric toothbrush shown in Fig. 3 a, represents that the eccentric output shaft end of its drive mechanism is in 6 o ' clock positions of clock and watch;

Fig. 6 h is a partial top cutaway view about electric toothbrush shown in Fig. 3 a, represents that the eccentric output shaft end of its drive mechanism is in 6 o ' clock positions of clock and watch;

Fig. 6 i is a partial bottom cutaway view about electric toothbrush shown in Fig. 3 a, represents that the eccentric output shaft end of its drive mechanism is in 6 o ' clock positions of clock and watch;

Fig. 6 j is a fragmentary side cross-sectional view about electric toothbrush shown in Fig. 3 a, represents that the eccentric output shaft end of its drive mechanism is in 9 o ' clock positions of clock and watch;

Fig. 6 k is a partial top cutaway view about electric toothbrush shown in Fig. 3 a, represents that the eccentric output shaft end of its drive mechanism is in 9 o ' clock positions of clock and watch;

Fig. 6 l is a partial bottom cutaway view about electric toothbrush shown in Fig. 3 a, represents that the eccentric output shaft end of its drive mechanism is in 9 o ' clock positions of clock and watch;

Fig. 7 a is a fragmentary side cross-sectional view about electric toothbrush shown in Fig. 5 a, represents that the eccentric output shaft end of its drive mechanism is in 12 o ' clock positions of clock and watch;

Fig. 7 b is a partial top cutaway view about electric toothbrush shown in Fig. 5 a, represents that the eccentric output shaft end of its drive mechanism is in 12 o ' clock positions of clock and watch;

Fig. 7 c is a partial bottom cutaway view about electric toothbrush shown in Fig. 5 a, represents that the eccentric output shaft end of its drive mechanism is in 12 o ' clock positions of clock and watch;

Fig. 7 d is a fragmentary side cross-sectional view about electric toothbrush shown in Fig. 5 a, represents that the eccentric output shaft end of its drive mechanism is in 3 o ' clock positions of clock and watch;

Fig. 7 e is a partial top cutaway view about electric toothbrush shown in Fig. 5 a, represents that the eccentric output shaft end of its drive mechanism is in 3 o ' clock positions of clock and watch;

Fig. 7 f is a partial bottom cutaway view about electric toothbrush shown in Fig. 5 a, represents that the eccentric output shaft end of its drive mechanism is in 3 o ' clock positions of clock and watch;

Fig. 7 g is a fragmentary side cross-sectional view about electric toothbrush shown in Fig. 5 a, represents that the eccentric output shaft end of its drive mechanism is in 6 o ' clock positions of clock and watch;

Fig. 7 h is a partial top cutaway view about electric toothbrush shown in Fig. 5 a, represents that the eccentric output shaft end of its drive mechanism is in 6 o ' clock positions of clock and watch;

Fig. 7 i is a partial bottom cutaway view about electric toothbrush shown in Fig. 5 a, represents that the eccentric output shaft end of its drive mechanism is in 6 o ' clock positions of clock and watch;

Fig. 7 j is a fragmentary side cross-sectional view about electric toothbrush shown in Fig. 5 a, represents that the eccentric output shaft end of its drive mechanism is in 9 o ' clock positions of clock and watch;

Fig. 7 k is a partial top cutaway view about electric toothbrush shown in Fig. 5 a, represents that the eccentric output shaft end of its drive mechanism is in 9 o ' clock positions of clock and watch;

Fig. 7 l is a partial bottom cutaway view about electric toothbrush shown in Fig. 5 a, represents that the eccentric output shaft end of its drive mechanism is in 9 o ' clock positions of clock and watch;

Fig. 8 a is a kind of side sectional view of electric toothbrush replacement scheme, has another kind of drive mechanism;

Fig. 8 b is a blast sectional perspective front view about electric toothbrush shown in Fig. 8 a;

Fig. 8 c is a blast sectional perspective rearview about electric toothbrush shown in Fig. 8 a;

Fig. 9 a is the side sectional view of another electric toothbrush replacement scheme, has another drive mechanism;

Fig. 9 b is a blast sectional perspective front view about electric toothbrush shown in Fig. 9 a;

Fig. 9 c is a blast sectional perspective rearview about electric toothbrush shown in Fig. 9 a.

The specific embodiment

Fig. 1 represents an electric toothbrush 10, comprises 12, one pieces groups 14 of a main body, and an actuating unit 16.Aforementioned body 12 further comprises an elongated portion 18 and a support unit 20.Above-mentioned pieces group 14 removably links to each other for 20 groups with above-mentioned support unit, will be described further below.Above-mentioned pieces group 14 is made up of many bristles 22, is used for cleaning the tooth of electric toothbrush 10 user.As shown in the figure, above-mentioned bristle 22 can be arranged around circumferencial direction, and stretches out along a centrage, this centrage usually and above-mentioned elongated portion 18 vertical.Equally, above-mentioned bristle 22 also can have other arrangement mode, and along stretching out with the centrage of 18 one-tenth other angles of above-mentioned elongated portion.

During use, start electric toothbrush 10 by actuating unit 16.Actuating unit 16 may be a button, and permutator or one slide switch etc.After electric toothbrush 10 was started, above-mentioned pieces group 14 was back and forth rotated around the rotation centerline 24 of bristle, did thereby produce the rider-type brush agomphiasis.Like this, the user of electric toothbrush 10 just can be added to bristle 22 on the his or her tooth as required, comes cleaning teeth.

With reference to figure 2, electric toothbrush 10 further comprises 30, one energy sources 32 of a motor and electric component 34 and 36.

Electric component

34 and 36 common formation one cover electric wirings.When thereby actuating unit 16 was unlocked the startup electric toothbrush,

electric component

34 and 36 contacted, thereby transmitted energy for said motor 30 from energy source 32.Said motor 30 is installed in the main body 12, can be any suitable small-sized electric motor.Energy source 32 is likely battery, but also may be to be connected to outside energy source, such as is connected on 120 or 220 volt AC power by a cover electric component.

Said motor 30 contains a motor output shaft 38, when electric toothbrush 10 is started, around 40 rotations of a motor output shaft centrage.Said motor output shaft 38 connects and drives a drive mechanism 42, and then drives 14 rotations of pieces group.In this programme, drive mechanism 42 is made up of 44, one eccentric output axle heads 46 of an output shaft and a coupling 48.Above-mentioned coupling 48 comprises a first end 50 and a second end 52.Coupling 48 contains a connection slot that is arranged in first end 50 and is connected with motor output shaft 38.Coupling 48 comprises that also a connection slot that is arranged in the second end 52 is connected with above-mentioned output shaft 44.As long as can provide connection for above-mentioned parts, these connection slots may have various structure.

Said motor 30, energy source 32 and drive mechanism 42 are installed in the main body 12.Main body 12 can be made by a kind of suitable waterproof plastic, avoid because of water inlet destroys electric toothbrush 10 inner bodies, and the protection user can not be subjected to possible injury when using.Equally, main body 12 also can be used other waterproof materials, as metal or synthetic material.

Shown in Fig. 3 a, 3b and 3c, above-mentioned support unit 20 comprises one first and connects member 56, and pieces group 14 comprises one second connection member 58.Above-mentioned first connects member 56 is made of a longitudinal bodies, and its outer surface has an outer groove 60.And above-mentioned second connect member 58 by a ledge, and promptly a column constitutes, its inside have an inner passage 62 and within it the surface the interior muscle 64 of a protrusion is arranged.The above-mentioned first connection member 56 is connected member 58 with second size can guarantee that the first connection member 56 is connected member 58 and can be anchored to by the mode of " button " together or throws off with second, thereby destroyed or bristle 22 when wearing and tearing to such an extent that can not normally use when pieces group 14, pieces group 14 can obtain changing.The above-mentioned first connection member 56 is connected member 58 with second size can also make the second connection member 58 connect member's 56 rotations around first.Therefore, above-mentioned inner passage 62, the interior muscle 64 that does not comprise protrusion, diameter may be than first longitudinal bodies that connects member 56, do not comprise outer groove 60, diameter big slightly, thereby make that inner passage 62 can the holding elongate body and allow second to connect member 58 and rotate around first centrage that connects member 56 simultaneously.For guaranteeing that when electric toothbrush 10 is started second connects member 58 and can be installed on first and connect on the member 56, above-mentioned inner passage 62 interior interior muscle 64 are used for cooperating with outer groove 60 on the longitudinal bodies.Because there has been the existence of above-mentioned inner passage 62 and interior muscle 64 to make that just the action of above-mentioned " button " is smooth.Moreover, connect the centrage rotation that member 58 can center on the first connection member 56 for guaranteeing above-mentioned second, between interior muscle 64 and outer groove 60, there are some gaps.And, removably be connected for guaranteeing pieces group 14 with above-mentioned support unit 20, at least the first connects member 56 is connected among the member 58 one and is made by a kind of suitable elastic materials with second.On the other hand, also can change first and connect member 56 is connected member 58 with second present position, that is, first connects member 56 can be positioned on the pieces group 14, and the second connection member 58 can be positioned on the support unit 20.

Still with reference to figure 3a to 3c, pieces group 14 further comprises a converter 54.Above-mentioned converter 54 can change into the unidirectional rotary motion of output shaft 44 crankmotion of pieces group 14, the action thereby the swing of realization electric toothbrush 10 is brushed teeth.In this programme, converter 54 comprises a column, includes a straight trough 66 and one first cooperation member 68.The size of straight trough 66 can be held the off-centre output axle head 46 of output shaft 44, and vertically stretches.Like this,, make when eccentric output axle head 46 and output shaft 44 rotate together that straight trough 66 can hold the shift in position of the top of eccentric output axle head 46 in vertical direction when electric toothbrush 10 is started.First cooperates member 68 to be positioned at the outer surface of above-mentioned converter 54, can be at least one groove, and its shape can make converter 54 embed in the pieces group 14 and can pull down (although among Fig. 3 a to 3c, only indicating a groove).

Above-mentioned pieces group 14 further comprises an inner groovy 70 and one second cooperation member 72.Above-mentioned inner groovy 70 be used for holding converter 54.Because converter 54 is a column in this programme, when converter 54 was put into inner groovy 70, above-mentioned inner groovy 70 just cooperated with converter 54 in requisition for a column, recessed shape.And, the above-mentioned second cooperation member 72 can be that at least one muscle is (though in Fig. 3 a to 3c, only indicate a muscle), when converter 54 is put into the inner groovy 70 of pieces group 14, its shape can be used for moving running parallel operation 54 at least one groove fasten and go up and can throw off.And, converter 54, inner groovy 70, the first cooperates members 68 and second to cooperate member 72 geomery can guarantee that converter 54 can be in inner groovy 70, with respect to inner groovy 70 and pieces group 14 by in the certain angle scope, rotating freely motion.When electric toothbrush 10 work, because converter 54 is positioned at inner groovy 70 all the time, and the needed anglec of rotation can not be big to surpassing whole circumference, so, at least one above-mentioned groove (first cooperates member 68) may might not be present on the whole circumference of converter 54 fully, and may be the part circumference that only is present in converter 54, but still can be interlocked with at least one muscle (be above-mentioned second cooperate member 72).And at least one muscle (second cooperates member 72) correspondingly may only be present on the part circumference of inner groovy 70.Yet first cooperates member 68 and second to cooperate member 72 size, must match with the range of movement of the off-centre output axle head 46 of output shaft 44 and adapt to.

In addition, the shape separately of converter 54 and inner groovy 70 also may be different.For example, shown in Fig. 4 a, Fig. 4 b and Fig. 4 c, the first cooperation member 68 ' can be the bottom that a groove is positioned at converter 54, and the corresponding second cooperation member 72 ' can be the bottom (referring to Fig. 4 a, 4b and 4c) that a muscle is positioned at inner groovy 70.Furtherly, first to cooperate member 68 can be the outer surface that one or more muscle is positioned at converter 54, and second to cooperate member 72 can be that one or more than one grooves are positioned at the inner surface of inner groovy 70 and are cooperating with first on the member 68 complementary positions.

In Fig. 3 a, 3b and 3c and Fig. 4 a, 4b and 4c, pieces group 14 still is that converter 54 all can be changed.This is very beneficial, because converter 54 may wear and tear and pieces group 14 still can be used in use for some time.Otherwise it is also possible.Certainly, pieces group 14 and converter 54 also can be changed simultaneously.Such as, pieces group 14 and converter 54 can be changed as an assembly is very easily.

Present 5a with the aid of pictures, 5b, 5c and 5d express the replacement scheme of another pieces group 14 and converter 54, respectively with 14 ' and 54 ' represent.Now, pieces group 14 ' comprise one group of interior dead slot, promptly an endoporus 86 and a counterbore 88 cooperate member 72 inner groovy 70 thereon and no longer include second.The diameter of counterbore 88 is than the slightly larger in diameter of endoporus 86.And converter 54 ' comprise now 82, one cervical regions 83 of a head and a straight trough 84.Converter 54 ' head 82 and cervical region 83 respectively with pieces group 14 ' counterbore 88 and endoporus 86 be slidingly matched, thereby can guarantee, when electric toothbrush 10 work, converter 54 ' in respect to pieces group 14 ' motion, can drive again pieces group 14 ' center on bristle rotation centerline 24 back and forth to rotate.

Thus one, parts of converter 54 ' and pieces group 14 ' can be used as are changed (and converter 54 in the scheme before this and pieces group 14 can be changed one of them or two and change together).Another scheme is, if at least converter 54 ' head 82 and pieces group 14 ' endoporus 86 in one make elastomeric material, will make converter 54 ' can install to pieces group 14 ' on can split out again, can guarantee again simultaneously that converter 54 ' total energy keeps its tram when electric toothbrush 10 work.In addition, converter 54 ' also have different profiles, and straight trough 84 also may not exclusively pass converter 54 ' whole length.

In Fig. 5 a to 5d, connect member 56 is connected the relative member's part of member 58 with second also different with first, show and correspondingly be denoted as 90 and 98.Now, the first connection member 90 has 92, one pores 94 of an outer groove and a plurality of gathering sill 96.Second connects member 98 comprises a pillar 100 and a plurality of fork foot 102 and 104 now, and corresponding on each fork foot convex tendon 106 and 108 being arranged.The first connection member 90 is connected member 98 and guarantees that still pieces group 14 removably is connected with support unit 20 with second.Particularly, what the size of pillar 100 can guarantee that it promptly can slide is fit in the pore 94, can deviate from again.And fork foot 102 and 104 is wanted empty with pillar 100 and be opened distance and buckle also and can throw off so that make convex tendon 106 and 108 on the fork foot 102 and 104 to slide with outer groove 92.The first connection member 90 is connected member 98 with second size also can make these connection members form one " button " cooperation, makes the second connection member 98 can center on the first connection member 90 simultaneously again and rotates.Therefore, pillar 100, a convex tendon of opening 106 and 108 and outer groove 92 be enough to make pieces group 14 ' can connect member's 90 rotations together around first.

A plurality of gathering sills 96 provide passage, when the user of electric toothbrush 10 pieces group 14 ' be installed on the support unit 20 with when pulling down,

convex tendon

106 and 108 can slip into and skid off by these passages.So just require, when the second connection member 98 was installed on the first connection member 90 and pulls down,

fork foot

102 and 104 must align with a plurality of gathering sills 96.Can also see an opening 110 from Fig. 5 c, the off-centre of output shaft 44 output axle head 46 be exactly by it extend out be slidingly matched ground actuation movement transducer 54 ' on straight trough 84.

In other scheme, second connects member 98 also may have only one or more than two fork feet.Under any situation, the quantity of a plurality of gathering sills 96 can be adjusted into the twice of fork foot and be positioned on the appropriate location.In addition, also can fix the quantity (as four gathering sills) of a plurality of gathering sills 96, a series of pieces groups that are less than or equal to gathering sill quantity 1/2 fork foot that have can be installed.Further scheme is, first connect member 90 may be positioned at pieces group 14 ' on, and second connect member 98 and be correspondingly positioned on the support unit 20.

In use, provided around the rotatablely moving an of axial line by output shaft 44 and eccentric output axle head 46, this axis parallel is in motor output shaft heart line 40.Because eccentric output axle head 46 constantly changes around the angle position of above-mentioned axial line, whenever output shaft 44 rotates a circle, a circumference will be depicted in the top of eccentric output axle head 46.The radius of this circumference equals the distance between the axial line top and output shaft 44 of off-centre output axle head 46 of circumferential position change.When the top of off-centre output axle head 46 rotatablely moves in the direction of the clock, the top drive converter 54 (54 ') of eccentric output axle head 46, and then drive pieces group 14 (14 '), do perpendicular to straight trough 66 (84), around the reciprocal rotary oscillation of bristle rotation centerline 24.

Present 6a to 6i with the aid of pictures (scheme shown in the expression 3a to 3c, and 4a to 4c is suitable for too), with 7a to 7i (scheme shown in the expression 5a to 5c), 18 directions from the toothbrush top along elongated portion, suppose that converter 54 (54 ') just in time is in the initial position of when the top of eccentric output axle head 46 is positioned at 12 o ' clock positions (Fig. 6 a to 6c and 7a to 7c), and the top of the eccentric output of hypothesis axle head 46 rotates in the direction of the clock, along with the top of off-centre output axle head 46 rotates to the position at 3 o'clock, converter 54 (54 ') rotates to extreme right position (being Fig. 6 d to 6f and 7d to 7f) gradually to the right owing to be driven.Rotate to the position at 6 o'clock then along with the top of off-centre output axle head 46, converter 54 (54 ') is got back to initial position (being Fig. 6 g to 6i and 7g to 7i) again to anticlockwise gradually.When the top of off-centre output axle head 46 rotated to 9 o ' clock positions gradually, converter 54 (54 ') rotated to left end extreme position (being Fig. 6 j to 6l and 7j to 7l) gradually left.When the top of off-centre output axle head 46 rotates when getting back to 12 o ' clock positions gradually, converter 54 (54 ') rotation is to the right gradually got back to initial position (promptly figure is Fig. 6 a to 6c and 7a to 7c).Therefore, whenever output shaft 44 rotates a circle, just drive pieces group 14 (14 ') and finish the circulation that reciprocal rotating brush agomphiasis is done.Otherwise eccentric output axle head 46 also can be by the counter clockwise direction operation opposite with said circumstances.

Off-centre output axle head 46 in the such scheme is (360 degree) the unidirectional rotation of full week, also can realize the action of brushing teeth.Certainly, drive mechanism 42 also can come actuation movement transducer 54 (54 ') with crankmotion, and so, converter 54 (54 ') only needs directly this crankmotion to be passed to pieces group 14 (14 ').Therefore, the structure of converter 54 (54 ') and pieces group 14 (14 ') can guarantee its promptly can with the drive mechanism with continuous unidirectional rotary motion, also can be connected (promptly with drive mechanism with crankmotion, rotatablely moving that drive mechanism 42 provides promptly can be successive, also can be reciprocal).

Please see Figure 8a to 8c now, be the electric toothbrush 120 that has another kind of drive mechanism 42 ' scheme.Electric toothbrush 120 except that drive mechanism 42 ' other appropriate section all identical with electric toothbrush 10, these same sections are no longer described.Above-mentioned drive mechanism 42 ' comprise having eccentric output shaft 44 and variator of exporting axle head 46.Above-mentioned variator can be changed into the rotary speed that adapts with pieces group 14 required hunting frequencies to the rotary speed of motor output shaft 38.This variator comprises 121, one internal gears 122 of a motor gear and a gear shaft 124.Said motor gear 121 is fixed on the motor output shaft 38 of motor 30, and output shaft centrage 125 is parallel to motor output shaft centrage 40 like this.Above-mentioned internal gear 122 is fixed on the gear shaft 124.The other end of gear shaft 124 is positioned at a hole on the fixing head 126 and can rotates therein.And fixing head 126 is fixed on the motor 30 by a cover clamp device 128 and 130.Clamp device 128 and 130 may be a screw etc.Said motor gear 121 and above-mentioned internal gear 122 engagements when motor output shaft 38 rotations, can drive internal gear 122 and rotate together.Internal gear 122 comprises an outer surface, and output shaft 44 stretches out from above, and rotatablely moving of internal gear 122 is delivered on the pieces group 14.On the basis of knowing motor output shaft 38 rotating speeds,, can realize the 14 needed hunting frequency requirements of pieces group by adjusting the radius of clean-up ratio of selecting motor gear 121 and internal gear 122.In fact, pieces group 14 and 14 ', converter 54 and 54 ', first be connected member 56 and be connected in member 58 and 98 with 90 and second, front and back are arranged side by side both one of form any one group can with above-mentioned drive mechanism 42 ' be used (be connected member 56 and be connected member 58) with second though only express pieces group 14, converter 54, first among Fig. 3 a to 3c at Fig. 8 a.

Shown in Fig. 9 a to 9c, be " the electric toothbrush 140 of scheme that has another drive mechanism 42.Electric toothbrush 140 is except that drive mechanism 42 " other appropriate section all identical with electric toothbrush 10, these same sections are no longer described.Above-mentioned drive mechanism 42 " comprises the output shaft 44 and the another kind of variator that have eccentric output axle head 46.Above-mentioned variator can be the rotary speed that the rotary speed of motor output shaft 38 is changed into pieces group 14 ' required hunting frequency adapts.This variator comprises a central gear 141,142,144 and 146 and internal gears 122 of a plurality of satellite gears.Above-mentioned central gear 141 is fixed on the motor output shaft 38 of motor 30.It is on the equally distributed respective teeth wheel shaft in center that a plurality of satellite gears 142,144 and 146 are individually fixed in central gear 141.These gear shafts are rotatably mounted on the fixing head 148.Internal gear 122 be positioned at a plurality of satellite gears 142,144 and 146 around.A plurality of satellite gears 142,144 and 146 simultaneously and internal gear 122 and central gear 141 engagements, thereby be delivered to rotatablely moving of motor output shaft 38 on the internal gear 122 and change rotary speed.As can be seen, internal gear 122 comprises an outer surface from Fig. 9 a to 9c, and output shaft 44 stretches out from above, and rotatablely moving of internal gear 122 be delivered to pieces group 14 ' on.Select central gear 141 by adjusting, a plurality of satellite gears 142,144 and 146, and the radius of clean-up ratio of internal gear 122 on the basis of knowing motor output shaft 38 rotating speeds, can be realized pieces group 14 ' needed hunting frequency requirement.In fact, pieces group 14 and 14 ', converter 54 and 54 ', first be connected member 56 and be connected in member 58 and 98 with 90 and second, front and back are arranged side by side both one of form any one group can with above-mentioned drive mechanism 42 " be used (though Fig. 9 a only express pieces group 14 among Fig. 5 a to 5d ', converter 54 ', first be connected member 90 and be connected member 98 with second).

Only otherwise break away from the scope of the invention, above-mentioned every scheme also might be made various modifications.Scope of the present invention is listed in the claim.

Claims

1. electric toothbrush comprises:

A) main body;

B) motor that is fixed in the aforementioned body;

C) support unit connects mutually with main body;

D) a pieces group removably links to each other with above-mentioned support unit;

E) drive mechanism and motor links and driven by motor, above-mentioned drive mechanism is used for to the pieces group provides rotational motion, and above-mentioned drive mechanism contains an off-centre output axle head that can rotate;

F) converter is connected with the pieces group and can pulls down, an above-mentioned converter is connected with the off-centre that the rotates output axle head of above-mentioned drive mechanism, above-mentioned converter changes into crankmotion to the unidirectional rotary motion of drive mechanism, and then driving pieces group is done reciprocal rotary oscillation.

2. press the electric toothbrush of claim 1, wherein above-mentioned support unit contains one first and connects the member, above-mentioned pieces group comprises one second and connects the member, and first connects the member one of is connected with second among the member and contains a longitudinal bodies, and its outer surface has an outer groove; Another connects member and then contains at least one ledge, is used for matching with above-mentioned outer groove being connected also and can throwing off.

3. press the electric toothbrush of claim 2, wherein above-mentioned at least one ledge comprises a column, there is an inner passage its inside and has the muscle of a protrusion surperficial within it, the muscle of above-mentioned inner passage and protrusion is slidingly matched with above-mentioned longitudinal bodies and outer groove respectively, and allows the pieces group to rotate.

4. press the electric toothbrush of claim 2, wherein above-mentioned longitudinal bodies comprises a pore and outer groove, above-mentioned at least one ledge comprises a pillar, at least one fork foot and be correspondingly positioned at the convex tendon of each fork on foot, above-mentioned pillar is slidingly matched with above-mentioned pore and links to each other, and above-mentioned fork foot and pillar sky are opened distance so that the convex tendon of fork on the foot can be slided with the outer groove on the above-mentioned longitudinal bodies outer surface buckle and can throw off, and allow the pieces group to rotate.

5. press the electric toothbrush of claim 1, its converter comprises a straight trough, a cervical region and a head, and the pieces group comprises one group of interior dead slot, above-mentioned drive mechanism comprises an eccentric output axle head, above-mentioned straight trough is used for holding the off-centre output axle head of drive mechanism, and above-mentioned one group of interior dead slot is used for holding the cervical region and the head of above-mentioned converter.

6. press the electric toothbrush of claim 1, its converter comprises a straight trough and first a cooperation member who is positioned at above-mentioned converter outer surface, and above-mentioned pieces group further comprises the second cooperation member that an inner groovy cooperates the member to be connected and can throw off with and first, above-mentioned drive mechanism comprises an eccentric output axle head, above-mentioned straight trough is used for holding the off-centre output axle head of drive mechanism, above-mentioned inner groovy is used for holding converter, and converter also can therefrom split out.

7. by the electric toothbrush of claim 6, wherein above-mentioned first to cooperate member and second one of to cooperate among the member be at least one groove, and another one can be at least one muscle.

8. electric toothbrush comprises:

A) main body;

B) a pieces group rotatably links to each other with aforementioned body;

C) motor that is fixed in the aforementioned body;

D) drive mechanism and motor links and driven by motor, above-mentioned drive mechanism is used for to the pieces group provides rotational motion, and above-mentioned drive mechanism contains an off-centre output axle head that can rotate;

E) converter can link to each other with above-mentioned pieces group with rotating freely and with above-mentioned drive mechanism sliding connection, an above-mentioned converter is connected with the off-centre that the rotates output axle head of above-mentioned drive mechanism, and above-mentioned converter is changed into the unidirectional rotary motion of drive mechanism and driven the needed crankmotion of pieces group.

9. press the electric toothbrush of claim 8, its converter comprises a straight trough, a cervical region and a head, and the pieces group comprises one group of interior dead slot, above-mentioned drive mechanism comprises an eccentric output axle head, above-mentioned straight trough is used for holding the off-centre output axle head of drive mechanism, and above-mentioned one group of interior dead slot is used for holding the cervical region and the head of above-mentioned converter.

10. press the electric toothbrush of claim 8, its converter comprises a straight trough and first a cooperation member who is positioned at above-mentioned converter outer surface, above-mentioned pieces group further comprises the second cooperation member that an inner groovy cooperates the member to be connected and can throw off with and first, above-mentioned drive mechanism comprises an eccentric output axle head, above-mentioned straight trough is used for holding the off-centre output axle head of drive mechanism, inner groovy is used for holding converter, and converter also can therefrom split out.