CN100413479C

CN100413479C - Electric toothbrush

Info

Publication number: CN100413479C
Application number: CNB021215812A
Authority: CN
Inventors: 颛清平
Original assignee: Individual
Current assignee: Zhuan Qingping
Priority date: 2002-06-27
Filing date: 2002-06-27
Publication date: 2008-08-27
Anticipated expiration: 2022-06-27
Also published as: CN1463684A

Abstract

The present invention relates to an electric toothbrush which comprises a casing, a motor, a primary transmission mechanism and a secondary transmission mechanism, wherein the motor is connected with the casing and is provided with a motor output element; the primary transmission mechanism is connected with the motor output element and converts the single rotation motion into the reciprocating rotation swing which operates by a primary swing angle; the secondary transmission mechanism is connected with the primary transmission mechanism and converts the reciprocating rotation swing of the primary transmission mechanism into the reciprocating rotary swing which operates by a secondary swing angle. An output component is driven by the secondary transmission mechanism, and a changeable toothbrush head is connected with the output component.

Description

Electric toothbrush

Invention field

The present invention is a kind of electric toothbrush.

Background of invention

In general, electric toothbrush drives head toothbrushes by variety of way or bristles is back and forth rotated, swing or the vibration action that realizes brushing teeth, and bigger brush pendulum angle has preferably toothbrushing effect .Sham at United States Patent (USP) U.S.PatentNo.5,822, showed a kind of electric toothbrush in 821. comprise a motor, be used for driving a pair of change-speed gearing, and drive an eccentric mechanism, drive a reciprocally swinging arm again by eccentric mechanism, drive brush by swing arm then. be subjected to structural limitations, the pendulum angle of above-mentioned this electric toothbrush is less.

Goal of the invention

The invention provides a kind of electric toothbrush, its drive system can realize the bigger or brush pendulum angle more suitably than present product, and appropriate brush swing speed, and then obtains better toothbrushing effect.

Summary of the invention

The present invention is a kind of electric toothbrush. by a housing, a motor, an elementary drive mechanism and a secondary drive mechanism are formed. and motor is fixed in the housing, and driving a motor output element and rotate around the axle center of motor line. elementary drive mechanism links to each other with the motor output element, and rotatablely moving of motor output element changed into elementary mean speed, reciprocal rotary oscillation by elementary pendulum angle operation. secondary drive mechanism links to each other with elementary driver, and a reciprocal rotary oscillation passes to secondary drive mechanism from elementary drive mechanism, formation is around secondary drive mechanism output axial line, with secondary mean speed, reciprocal rotary oscillation by secondary pendulum angle operation. secondary drive mechanism output axial line and motor output shaft heart line parallel. secondary drive mechanism drives an output block, with secondary mean speed, by secondary pendulum angle, reciprocal rotary oscillation around the operation of secondary drive mechanism output axial line. secondary drive mechanism can comprise one first gear member and one second gear member. and the first gear member can comprise a fan-shaped ring gear and link to each other with elementary drive mechanism. and the second gear member can comprise a pinion, is driven by the first gear member. and output block then can comprise the head toothbrushes of a dismantled and assembled replacing.

Compare with present technology, because the present invention has the two-stage drive system, the pendulum angle of the brush that can change and swing speed. so just can realize appropriate pendulum angle and swing speed by revising design parameter according to actual needs, thereby improve the serviceability of product.

Brief description

Now only the present invention is explained with way of example, and with reference to the accompanying drawings. wherein

Fig. 1 is a view with the corresponding representational electric toothbrush of the present invention.

Fig. 2 a is confined explosion's axonometric chart of an electric toothbrush shown in Figure 1.

Fig. 2 b is confined explosion's axonometric chart of another electric toothbrush shown in Figure 1.

Fig. 3 is the three-dimensional installation diagram of local electric toothbrush shown in Fig. 2 a and Fig. 2 b.

Detailed description of the invention

At first with reference to figure 1, one of its expression provides the action of the brush of a reciprocal rotary oscillation with corresponding most representative electric toothbrush 10. toothbrushes 10 of the present invention, and corresponding to each stroke cycle, has very big pendulum angle.

Toothbrush 10 comprises a motor 12, an energy source 14, a housing 16, a driving mechanism 18 and output block 20. motors 12 drive driving mechanism 18, and then driving output block 20. motors 12 can be any suitable small-sized electric motors. and energy source 14 is used for providing energy to motor 12. and energy source 14 is battery most likely, as shown in Figure 1, but also may be to be connected to exterior source of energy, such as being connected to the 120/220VAC power supply by one group of electric component. 12 one from energy source 14 to motor of control circuit 22 representative is suitable is electrically connected circuit and assembly. and a switch 23 is positioned on the housing 16, contact with control circuit 22, be used for starting and stop motor 12.

Housing 16 surrounds motor 12; energy source 14 and driving mechanism 18; and the basis, location is installed for they provide. housing 16 can be made by a kind of suitable waterproof plastic; avoid into water and destroy inner body; and the protection user can not be subjected to possible injury when using. same; housing 16 also can use other waterproof materials, as metal or synthetic material.

Shown in Fig. 2 a, expression driving mechanism 18. motors 12 drive motor output shaft 24. motor output shafts 24 and a motor gear 26 that motor gear 26 is housed and rotate around one first axial line 28, i.e. motor output shaft heart lines. and motor gear 26 drives 30 rotations of one first parts.

First parts 30 comprise an internal gear 32 and rotate around one second axial line 34. the front end of internal gear 32 is that a center card 36. center cards 36 have a first surface 38 (to see Fig. 2 a), the far-end that stretches out central shaft 40. central shafts 40 on it gos deep in the hole 42 on the housing 16 and can rotate therein. and center card 36 has a second surface 44 (to see Fig. 2 a), stretch out 46. bearing parts 46, a bearing part on it load-bearing surface 48 and an end face 50 are arranged, one is stretched out from end face 50 around member 52. owing to be to be on the external margin of end face 50 around member 52, so, when first parts 30 rotate around second axial line 34, also center on second axial line 34 around operation around member 52.

One second parts 54 are fixed in the square groove 56 on the housing 16, being used for supporting on bearing part 46. second parts 54 of first parts 30 bearer ring 58 is arranged, be used for supporting bearing part 46 and rotate therein. the width of bearing part 46 and bearer ring 58 adapts. and be installed on and extend through the front end face of bearer ring 58 around member 52 on the bearing part 46.

One the 3rd parts 60 comprise that 62. 1 first shaft parts 64 of a body extend back and enter a hole 66 that is positioned at second parts 54 from body 62, thereby first shaft part 64 can be rotated in hole 66 around one the 3rd axial line 68. one second shaft part 70 extends forward from body 62. and the 3rd parts 60 also comprise an elongated slot arm 72 that has elongated slot, extending radially out from body 62. elongated slot arm 72 has an elongated slot 74, be used for receiving ring coiled person 52 and can being slidingly matched with it. and since around member 52 around second axial line 34 around operation, this around the movement will drive elongated slot arm 72 back and forth around the 3rd axial line 68 reciprocal rotary oscillations. and when work, elongated slot arm 72 is with mean angular velocity W ₁, press pendulum angle A ₁Carry out reciprocal rotary oscillation.

Because elongated slot arm 72 reciprocal rotary oscillations, it has an angular velocity range, gradually change from the zero velocity that is positioned at the angle of oscillation two ends and to carry out the transition to the maximum speed of angle of oscillation intermediate position points. because the instantaneous angular velocity of elongated slot arm 72 reciprocal rotary oscillations is relevant with its angle position of living at that time, so adopt mean angular velocity to do explanation here.

Extending forward from elongated slot arm 72 is a gear member 76, it is the part of a ring gear, be fan-shaped ring gear. one the 4th parts 78 are fixed in the housing 16. and the 4th parts 78 comprise a receiving orifice 80, be used for holding second shaft part 70, second shaft part 70 can be rotated in receiving orifice 80. the 4th parts 78 also comprise a bearing section 82, output block 20. output blocks 20 wherein are installed can in bearing section 82, center on one the 4th axial line 86 reciprocal rotary oscillations. in the rear end of output block 20, be fixed with a pinion 88. under the driving of the gear member 76 on the 3rd parts 60, pinion 88 is driven with mean angular velocity W with output block 20 ₂Press pendulum angle A ₂Carrying out reciprocal rotary oscillation around the 4th axial line 86 reciprocal rotary oscillations. the radius ratio gear member's 76 of pinion 88 radius is little. the mean angular velocity W of pinion 88 ₂With pendulum angle A ₂Mean angular velocity W than gear member 76 ₁With pendulum angle A ₁Greatly, and be inversely proportional to its radius ratio. thereby output block 20 can obtain bigger mean angular velocity and bigger pendulum angle, and still make elongated slot arm 72 keep lower mean angular velocity and pendulum angle simultaneously. as shown in Figure 1, output block 20 passes from a hole on the housing 16 and stretches out, and a square shaped top 90 is arranged, be used for installing brush parts 92. on it

Shown in Fig. 2 a and Fig. 2 b, brush parts 92 comprise a mounting portion 94, the square shaped top 90. brush parts 92 that are used for accepting output block 20 also comprise a brush 96, on have the good bristle of a series of arrangements 98. bristles 98 to extend along an axial line 100. axial line 100 promptly can be perpendicular to the front portion and the 4th axial line 86 of brush parts 92, also can with 86 one-tenth other angles in front portion and the 4th axial line of brush parts 92. in toothbrush when work,, brush 96 is by with mean angular velocity W ₂Press pendulum angle A ₂Driving around the reciprocal rotary oscillation of the 4th axial line 86 realizes brushing teeth action down. pendulum angle A ₂Be different from pendulum angle A ₁. in the diagram toothbrush, pendulum angle A ₂Greater than pendulum angle A ₁. in like manner, mean angular velocity W ₂Be different from mean angular velocity W ₁. in the diagram toothbrush, mean angular velocity W ₂Greater than mean angular velocity W ₁. brush parts 92, by with mean angular velocity W ₂Press pendulum angle A ₂The driving of reciprocal rotary oscillation under, the wobbling action that carries out has been simulated the action of moving repeatedly in the front and back when people brush teeth with manual toothbrush of brushing teeth. brush parts 92 can be pulled down replacing, are convenient to when brush 96 wearing and tearing or the replacing needs when destroying.

Motor gear 26, first parts 30, the 3rd parts 60, do not comprise that gear member 76 constitutes elementary drive mechanism, be generically and collectively referred to as 102. elementary drive mechanisms 102 the unidirectional rotary motion of first axial line 28 that centers on motor 12, change into elongated slot arm 72 from the motor output shaft 24 of motor 12, with mean angular velocity W ₁Press pendulum angle A ₁The reciprocal rotary oscillation of operation. because the 3rd parts 60 do not comprise that gear member 76 is output elements of elementary drive mechanism 102. therefore, the 3rd axial line 68 is output element axial lines of elementary drive mechanism 102.

Gear member 76 and pinion 88 constitute secondary drive mechanism, are generically and collectively referred to as level drive mechanism 104 104. times, and the reciprocal rotary oscillation of elongated slot arm 72 is changed into output block 20 around the 4th axial line 86, with mean angular velocity W ₂Press pendulum angle A ₂The reciprocal rotary oscillation of operation. pinion 88 is output elements of secondary drive mechanism 104. therefore, the 4th axial line 86 is output element axial lines of secondary drive mechanism 104.

As shown in Figure 3, be the whole drive mechanism 18 that assembles, comprise elementary drive mechanism 102 and secondary drive mechanism 104. as can be seen,

axial line

28,34,68 and 86 is all parallel to each other. and this makes all parts in the drive mechanism 18 occupy smaller volume, thereby makes them can pack in the housing 16 that can enough handss grips.

Elementary drive mechanism 102 also can be any replacement scheme that unidirectional rotary motion can be changed into reciprocal rotary oscillation, and the wherein particularly back and forth axial line and the motor output shaft heart line parallel of rotary oscillation.

Secondary drive mechanism 104 also can be any replacement scheme that can change reciprocally swinging angle and mean angular velocity.

As shown in the figure, brush 96 can have circumferential bristle 98. same, also has any bristle that distributes with other suitable form.

For those skilled in the art, well imagine to be that only otherwise break away from the present invention, it is possible that said mechanism is made various modifications.

Claims

1. electric toothbrush comprises:

A housing,

A motor connects mutually with above-mentioned housing, and said motor has a motor output element around the rotation of motor output shaft heart line,

An elementary drive mechanism links to each other with the said motor output element, and above-mentioned elementary drive mechanism can be with unidirectional rotary motion, from the said motor output element, change into the reciprocal rotary oscillation of elementary pendulum angle and the operation of elementary mean angular velocity and

A secondary drive mechanism links to each other with above-mentioned elementary drive mechanism, above-mentioned secondary drive mechanism changes into the reciprocal rotary oscillation of elementary drive mechanism with secondary pendulum angle and secondary mean angular velocity, reciprocal rotary oscillation around the operation of secondary drive mechanism output axial line, and drive an output block with above-mentioned secondary pendulum angle and secondary mean angular velocity around the operation of secondary drive mechanism output axial line, above-mentioned secondary drive mechanism output axis parallel is exported axial line in said motor;

Above-mentioned elementary drive mechanism and secondary drive mechanism all are positioned at above-mentioned housing.

2. press the electric toothbrush of claim 1, wherein

Above-mentioned secondary drive mechanism comprises one first gear member, the above-mentioned first gear member comprises a fan-shaped ring gear, link to each other with elementary drive mechanism, one second gear member transmission that is meshed with the above-mentioned first gear member, the above-mentioned second gear member includes only a pinion.

3. by the electric toothbrush of claim 1, wherein the said motor output element comprises one first gear member, and above-mentioned elementary drive mechanism comprises:

Second gear member rotatable, that be meshed with above-mentioned first gear member,

One that connects with above-mentioned second gear member converts rotatablely moving of above-mentioned second gear member to around the movement around the member,

One rotatable, have elongated slot, can above-mentioned around the movement can be changed into reciprocal rotary oscillation with above-mentioned around the be slidingly matched member of operation of member with the operation of above-mentioned elementary pendulum angle and elementary mean angular velocity;

Above-mentioned secondary drive mechanism comprises one first gear member;

In the above-mentioned elementary drive mechanism rotatable, have elongated slot, can with above-mentioned be same one around be slidingly matched member and the first gear member in the above-mentioned secondary drive mechanism of operation of member.

4. electric toothbrush comprises:

A housing,

A motor connects mutually with above-mentioned housing, and said motor has a motor output element about the rotation of motor output shaft heart line,

Above-mentioned elementary drive mechanism comprise one rotatable, have elongated slot the member, above-mentioned secondary drive mechanism comprises one first gear member, in the above-mentioned elementary drive mechanism rotatable, have elongated slot the member and the first gear member in the above-mentioned secondary drive mechanism for same one.

5. electric toothbrush comprises:

A housing,

A drive mechanism links to each other with the said motor output element, and above-mentioned drive mechanism can from the said motor output element, change into the reciprocal rotary oscillation with elementary pendulum angle and the operation of elementary mean angular velocity with unidirectional rotary motion,

A fan-shaped ring gear, above-mentioned fan-shaped ring gear links to each other with above-mentioned drive mechanism, and keep with the reciprocal rotary oscillation of elementary pendulum angle and the operation of elementary mean angular velocity and

A gear can be meshed with above-mentioned fan-shaped ring gear drivingly, thereby realize with secondary pendulum angle and secondary mean angular velocity, reciprocal rotary oscillation around the operation of said gear axial line, and drive an output block and move around the said gear axial line with secondary pendulum angle and secondary mean angular velocity, the said gear axis parallel is exported axial line in said motor;

Above-mentioned fan-shaped ring gear and the above-mentioned gear that is engaged with all are positioned at above-mentioned housing.