CN104665948B - A kind of driver output mechanism and electric toothbrush - Google Patents

A kind of driver output mechanism and electric toothbrush Download PDF

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Publication number
CN104665948B
CN104665948B CN201510088038.3A CN201510088038A CN104665948B CN 104665948 B CN104665948 B CN 104665948B CN 201510088038 A CN201510088038 A CN 201510088038A CN 104665948 B CN104665948 B CN 104665948B
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torsional oscillation
output mechanism
groove
shell
brush
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CN104665948A (en
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苗得雨
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Oracleen Technology Co
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Oracleen Technology Co
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F1/00—Springs
    • F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
    • F16F1/14—Torsion springs consisting of bars or tubes

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  • Health & Medical Sciences (AREA)
  • Brushes (AREA)
  • Dentistry (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)

Abstract

The invention discloses a kind of electronic output mechanism, comprise brush, the bottom of brush is connected with torsional oscillation bar, the outside cover of torsional oscillation bar has torsional oscillation sheet, the rubber ring be set on torsional oscillation bar is provided with between the top of torsional oscillation sheet and the bottom of brush, the bottom of torsional oscillation sheet is connected with contiguous block, and the bottom of contiguous block is provided with permanent magnet; The invention also discloses a kind of electric toothbrush, comprise the shell with internal cavities, the inside of shell is provided with vibrating motor, and after the internal cavities of shell is inserted from the top of shell in the bottom of electronic output mechanism, the permanent magnet interval of electronic output mechanism corresponding vibrating motor are arranged; This driver output mechanism and electric toothbrush can utilize indirect resonance principle, and under resonant frequency, realizing amplitude significantly increases, and cleaning efficiency is high, and structure is simple, and cost is low.

Description

A kind of driver output mechanism and electric toothbrush
Technical field
The present invention relates to technical field of mechanical transmission, particularly relate to a kind of driver output mechanism and electric toothbrush.
Background technology
In recent years, the health care instrument such as electric toothbrush relies on the features such as scientific and effective to come into the life of people gradually.Generally, electric toothbrush is divided into rotation and vibration two classes, wherein, rotate class toothbrush principle relatively simple, motor drives circular brush to rotate, friction effect is strengthened while the common brushing action of execution, thus its function is also relatively simple, and inside is a mechanical drive shaft, drives brush left and right reciprocating rotary, on the one hand, mechanical drive shaft determines the speed of toothbrush can not be too high, and on the other hand, the determination of direction of rotation makes the direction of brushing teeth fix, all cause the dirt effectively can not clearing up dental surface, cleaning efficiency is lower.
And vibrate class its interior and have an electrically driven (operated) vibrating motor, brush can be allowed to produce dither approximately perpendicular to brush holder direction.In addition, in vibration class toothbrush, comprise Direct driver vibration and indirectly drive vibration two kinds, Direct driver vibration class toothbrush, its vibrating motor is directly connected with brush, and the vibration performance of motor directly determines the vibration of brush, due to machinery inertial, the mode of Direct driver limits the driving frequency of motor, can not realize significantly promoting in dynamic property; And indirectly drive vibration class toothbrush, elastomeric element by certain form between vibrating motor with brush is connected, resonance principle is utilized to realize driving brushhead vibration, the performance of vibrating motor and the structure of resonator system are depended in the vibration of brush, this indirect driving vibration class toothbrush realizes vibration owing to utilizing resonance principle, frequency of vibration can be very high, and in addition, amplitude when reaching resonance also can be much higher than Direct driver vibration class.
In prior art, common indirect driving class electric toothbrush, resonant structure implements more complicated, needs assembling and the connection of multiple parts, lower in production efficiency.In addition, in the process used, the probability that complication system breaks down is also larger, once break down, changes cost higher.
Summary of the invention
The object of the invention is to propose a kind of driver output mechanism and electric toothbrush, can utilize indirect resonance principle, realize frequency of vibration and amplitude significantly increases, cleaning efficiency is high, and structure is simple, and cost is low.
For reaching this object, the present invention by the following technical solutions:
A kind of electronic output mechanism, comprise brush, the bottom of described brush is connected with torsional oscillation bar, the outside cover of described torsional oscillation bar has torsional oscillation sheet, the rubber ring be set on described torsional oscillation bar is provided with between the top of described torsional oscillation sheet and the bottom of described brush, the bottom of described torsional oscillation sheet is connected with contiguous block, and the bottom of described contiguous block is provided with permanent magnet.
Wherein, described torsional oscillation sheet comprises the torsional oscillation sheet body of strip, the bottom of described torsional oscillation sheet body alongst offers square groove, and two sidewalls of described square groove are connected to the wing plate of outward-dipping extension, and the top width of described wing plate is less than bottom width;
Described contiguous block comprises contiguous block body, the end face of described contiguous block body is provided with connection bump, and the surface of described connection bump offers the concave shape groove for matching with the sidewall of described square groove and the wing groove for matching with the bottom of described wing plate;
During connection, described torsional oscillation bar is inserted in described square groove affixed, the bottom of described torsional oscillation bar is to the end face being located at described connection bump, and corresponding inserted is distinguished in described concave shape groove, described wing groove, to form tight fit in the bottom of the bottom of the sidewall of described square groove, described wing plate.
Wherein, the angle between described wing plate and the sidewall of described square groove is 120 ° ~ 150 °, and accordingly, the angle between described concave shape groove and described wing groove is 120 ° ~ 150 °, and the angle between two described wing plates is 60 ° ~ 120 °.
Wherein, the angle between described wing plate and the sidewall of described square groove is 135 °, and accordingly, the angle between described concave shape groove and described wing groove is 135 °.
Wherein, the inside of described rubber ring offers square rubber collar aperture, and the cross section of described torsional oscillation bar is square, and described torsional oscillation bar is arranged through described rubber collar aperture.
Wherein, the outside of described rubber ring offers the rubber ring recess of annular.
Wherein, the bottom of described brush offers square brush hole, and the cross section of described torsional oscillation bar is square, and described torsional oscillation bar forms interference fit after inserting described brush hole.
A kind of electric toothbrush, comprise the shell with internal cavities, the inside of described shell is provided with vibrating motor, the internal cavities of described shell is inserted in the bottom of described electronic output mechanism from the top of described shell after, the described permanent magnet interval of described electronic output mechanism corresponding described vibrating motor are arranged.
Wherein, described shell fastens the back cover and fore shell that form internal cavities before and after comprising;
After described back cover and described fore shell fasten, top forms manhole, and the outside of described rubber ring offers the rubber ring recess of annular, and the sidewall of described manhole snaps in described rubber ring recess;
Be provided with fixing head in described back cover and described fore shell, described fixing head offers holddown groove, and described vibrating motor snaps in described holddown groove.
Beneficial effect of the present invention is:
Electronic output mechanism of the present invention, comprise brush, the bottom of described brush is connected with torsional oscillation bar, the outside cover of described torsional oscillation bar has torsional oscillation sheet, the rubber ring be set on described torsional oscillation bar is provided with between the top of described torsional oscillation sheet and the bottom of described brush, the bottom of described torsional oscillation sheet is connected with contiguous block, and the bottom of described contiguous block is provided with permanent magnet; It is by the arranged outside torsional oscillation sheet at torsional oscillation bar, and torsional oscillation sheet is fixed between rubber ring and contiguous block, the elastic performance of elastic-like bar can not only be provided, utilize again torsional oscillation sheet to provide to support well, and make rubber ring as vibration fulcrum, form vibration at front and back two parts of this vibration fulcrum, when these two parts are under resonant frequency, just can realize amplitude significantly to increase, improve cleaning efficiency, simple and reliable for structure, produce convenient, with low cost, change and maintenance easy.
Electric toothbrush of the present invention, comprise the shell with internal cavities, the inside of described shell is provided with vibrating motor, the internal cavities of described shell is inserted in the bottom of described electronic output mechanism from the top of described shell after, the described permanent magnet interval of described electronic output mechanism corresponding described vibrating motor are arranged; This electric toothbrush utilizes indirect resonance principle, and under resonant frequency, realizing amplitude significantly increases, and cleaning efficiency is high, and structure is simple, and cost is low.
Accompanying drawing explanation
Fig. 1 is the structural representation of electronic output mechanism of the present invention.
Fig. 2 is the decomposition texture schematic diagram of the electronic output mechanism in Fig. 1.
Fig. 3 is the principle schematic of electronic output mechanism of the present invention.
Fig. 4 is the relation schematic diagram between the wing slab integral rigidity of torsional oscillation sheet of the present invention and the angle of two wing plates.
Fig. 5 is the structural representation of electric toothbrush of the present invention.
Fig. 6 is the decomposition texture schematic diagram of the electric toothbrush in Fig. 5.
Fig. 7 is the structural representation of electric toothbrush after hiding upper casing in Fig. 5.
In figure: 1-shell; 2-brush; 3-rubber ring; 4-torsional oscillation bar; 5-torsional oscillation sheet; 6-contiguous block; 7-permanent magnet; 8-vibrating motor; 101-back cover; 102-fore shell; 103-fixing head; 104-holddown groove; 201-brush hole; 301-rubber collar aperture; 302-rubber ring recess; 501-square groove; 502-wing plate; 601-connection bump; 602-concave shape groove; 603-wing groove.
Detailed description of the invention
Technical scheme of the present invention is further illustrated by detailed description of the invention below in conjunction with accompanying drawing.
As shown in Figures 1 to 4, a kind of electronic output mechanism, comprise brush 2, the bottom of brush 2 is connected with torsional oscillation bar 4, the outside cover of torsional oscillation bar 4 has torsional oscillation sheet 5, be provided with the rubber ring 3 be set on torsional oscillation bar 4 between the top of torsional oscillation sheet 5 and the bottom of brush 2, the bottom of torsional oscillation sheet 5 is connected with contiguous block 6, and the bottom of contiguous block 6 is provided with permanent magnet 7.This electronic output mechanism is by the arranged outside torsional oscillation sheet at torsional oscillation bar, and torsional oscillation sheet is fixed between rubber ring and contiguous block, the elastic performance of elastic-like bar can not only be provided, utilize again torsional oscillation sheet to provide to support well, and make rubber ring as vibration fulcrum, vibration is formed at front and back two parts of this vibration fulcrum, when these two parts are under resonant frequency, just can realize amplitude significantly to increase, improve cleaning efficiency, simple and reliable for structure, produce convenient, with low cost, change and maintenance easy.
In the present invention, according to theoretical principle as follows, as shown in Figure 3, in the resonator system that electronic output mechanism is formed, can think that it comprises mass m 1and m 2, elastic rod k 1and k 2, and fulcrum etc., wherein, fulcrum is the position of rubber ring 3, m 1represent the quality summation of the later all parts of fulcrum, k 1represent the rigidity of the later all parts of fulcrum, wherein, the later all parts of fulcrum comprise the part being positioned at the bottom of rubber ring 3 of torsional oscillation bar 4, torsional oscillation sheet 5, contiguous block 6 and permanent magnet 7; m 2represent the quality summation of all parts before fulcrum, k 2represent the rigidity of all parts before fulcrum, wherein, all parts before fulcrum comprise the top being positioned at rubber ring 3 of torsional oscillation bar 4 and stretch into part, the brush 2 of brush 2.As mass m 1under certain periodic torque M during twisting vibration, mass m 2make forced vibration, when the frequency of moment of torsion M is equal with the natural frequency of system, namely resonate.
The rigidity of whole system is k and rotary inertia is I, then the resonant frequency of system meets the ultimate principle formula of resonator system:
ω = k I ,
If elastic rod k 1with mass m 1rotary inertia I 1equal elastic rod k 2with mass m 2rotary inertia I 2, then the resonant frequency of system meets following formula:
ω = k I = ω 1 = k 1 I 1 = ω 2 = k 2 I 2 ,
That is:
k 1 I 1 = k 2 I 2 ,
That is, meet the system of relational expression all can realize resonance.
If elastic rod k 1with elastic rod k 2commaterial, i.e. k 1=k 2, rotary inertia I 1equal rotary inertia I 2, then mass m during resonance 1and m 2the displacement of place end meets:
s 1 s 2 = l 1 l 2 ,
When meeting l 1=l 2time, mass m 1displacement s 1with mass m 2displacement s 2then meet s 1=s 2, and its vibration phase is contrary, difference 180 ° just, at this moment, the amplitude of whole resonator system reaches maximum, can realize the transmission of macro-energy.
Wherein, when phase 180 °, amplitude defecation is equal, and this is just conducive to the design of control circuit part.Certainly, theoretically, resonance be phase contrast can be unspecified angle, actual phase contrast is determined as required.
Particularly, torsional oscillation sheet 5 comprises the torsional oscillation sheet body of strip, and the bottom of torsional oscillation sheet body alongst offers square groove 501, and two sidewalls of square groove 501 are connected to the wing plate 502 of outward-dipping extension, and the top width of wing plate 502 is less than bottom width; Contiguous block 6 comprises contiguous block body, and the end face of contiguous block body is provided with connection bump 601, and the surface of connection bump 601 offers the concave shape groove 602 for matching with the sidewall of square groove 501 and the wing groove 603 for matching with the bottom of wing plate 502; During connection, torsional oscillation bar 4 is inserted in square groove 501 affixed, the bottom of torsional oscillation bar 4 is to the end face being located at connection bump 601, the bottom of the sidewall of square groove 501, the bottom difference corresponding inserted of wing plate 502 are in concave shape groove 602, wing groove 603, to form tight fit, thus compact siro spinning technology both ensureing is with fixing.
Wherein, torsional oscillation sheet 5 is welded together by square groove 501 and torsional oscillation bar 4, in whole vibrational system, play flexible member, and the special shape of torsional oscillation bar 4, torsional oscillation sheet 5 makes it have certain supporting role simultaneously.
As shown in Figure 4, be the relation schematic diagram of the integral rigidity of wing plate 502 and the angle of two wing plates 502, according to curve in figure, the rigidity of wing plate 502 needs moderate, rigidity when too conference causes resonance displacement excessively slight, the too little meeting of rigidity causes system compliance too large, and stability is poor.Preferably, the angle between the sidewall of wing plate 502 and square groove 501 is 120 ° ~ 150 °, and accordingly, the angle between concave shape groove 602 and wing groove 603 is 120 ° ~ 150 °, and the angle between two wing plates 502 is 60 ° ~ 120 °.Preferred further, the angle between the sidewall of wing plate 502 and square groove 501 is 135 °, and accordingly, the angle between concave shape groove 602 and wing groove 603 is 135 °.Arranged by above-mentioned angle, the stability of vibrational system can be ensured, reliability.
In the present embodiment, the inside of rubber ring 3 offers square rubber collar aperture 301, and the cross section of torsional oscillation bar 4 is square, and torsional oscillation bar 4 is arranged through rubber collar aperture 301.
Wherein, the bottom of brush 2 offers square brush hole 201, and the cross section of torsional oscillation bar 4 is square, and torsional oscillation bar 4 forms interference fit after inserting brush hole 201, to ensure that compact siro spinning technology is with fixing therebetween.
Wherein, the outside of rubber ring 3 offers the rubber ring recess 302 of annular, utilizes rubber ring recess 302 for coordinating with the housing of electric toothbrush.After brush 2 and torsional oscillation sheet 5 position are fixed, gap therebetween equals the thickness of rubber ring 3, thus ensures the axial restraint of rubber ring 3, and rubber ring 3 plays the dual function of location and damping; Plastic connecting block 6 and permanent magnet 7 are bonded together by seccotine.
Electronic output mechanism of the present invention, increases frequency of vibration and amplitude, improves cleaning efficiency, simple and reliable for structure, produce convenient, with low cost, change and keep in repair the advantages such as easy.
As shown in FIG. 5 and 6, a kind of electric toothbrush, comprise the shell 1 with internal cavities, the inside of shell 1 is provided with vibrating motor 8, after the internal cavities of shell 1 is inserted from the top of shell 1 in the bottom of electronic output mechanism, permanent magnet 7 interval of electronic output mechanism corresponding vibrating motor 8 are arranged.This electric toothbrush utilizes indirect resonance principle, and under resonant frequency, realizing amplitude significantly increases, and cleaning efficiency is high, and structure is simple, and cost is low.
Wherein, shell 1 fastens the back cover 101 and fore shell 102 that form internal cavities before and after comprising;
Back cover 101 and fore shell 102 fasten rear top and form manhole, and the outside of rubber ring 3 offers the rubber ring recess 302 of annular, and the sidewall of manhole snaps in rubber ring recess 302;
Be provided with fixing head 103 in back cover 101 and fore shell 102, fixing head 103 offers holddown groove 104, and vibrating motor 8 snaps in holddown groove 104.
Driver output mechanism is stuck in the manhole at the top of back cover 101 and fore shell 102 by the rubber ring recess 302 outside rubber ring 3, realizes location and fixing; Vibrating motor 8 is fixed on shell 1 by the holddown groove 104 of the fixing head 103 of back cover 101 and fore shell 102.
The operation principle of electric toothbrush of the present invention is: vibrating motor 8 is after accepting the signal of telecommunication of certain frequency, vibrating motor 8 constantly changes pole orientation towards the solenoid of this side of permanent magnet 7, and produce the power effect of one-period between permanent magnet 7, drive permanent magnet 7 and contiguous block 6 fixing with it periodically twisting vibration, twisting vibration is delivered to brush 2 by torsional oscillation bar 4 and torsional oscillation sheet 5, when frequency of vibration reach or close to the natural frequency of system after, clearly, amplitude is also relatively large in the vibration of vibration export structure; Do not exist between the solenoid of vibrating motor 8 and permanent magnet 7 and be mechanically connected and the controllability of Resonant devices, also namely there is gap between the two, this makes electric toothbrush to realize dither, thus realizes efficient cleaning teeth dirt.
Below know-why of the present invention is described in conjunction with specific embodiments.These describe just in order to explain principle of the present invention, and can not be interpreted as limiting the scope of the invention by any way.Based on explanation herein, those skilled in the art does not need to pay performing creative labour can associate other detailed description of the invention of the present invention, and these modes all will fall within protection scope of the present invention.

Claims (8)

1. an electronic output mechanism, comprise brush (2), it is characterized in that, the bottom of described brush (2) is connected with torsional oscillation bar (4), the outside cover of described torsional oscillation bar (4) has torsional oscillation sheet (5), the rubber ring (3) be set on described torsional oscillation bar (4) is provided with between the top of described torsional oscillation sheet (5) and the bottom of described brush (2), the bottom of described torsional oscillation sheet (5) is connected with contiguous block (6), the bottom of described contiguous block (6) is provided with permanent magnet (7)
Described torsional oscillation sheet (5) comprises the torsional oscillation sheet body of strip, the bottom of described torsional oscillation sheet body alongst offers square groove (501), two sidewalls of described square groove (501) are connected to the wing plate (502) of outward-dipping extension, and the top width of described wing plate (502) is less than bottom width;
Described contiguous block (6) comprises contiguous block body, the end face of described contiguous block body is provided with connection bump (601), and the surface of described connection bump (601) offers the concave shape groove (602) for matching with the sidewall of described square groove (501) and the wing groove (603) for matching with the bottom of described wing plate (502);
During connection, described torsional oscillation bar (4) is inserted in described square groove (501) affixed, the bottom of described torsional oscillation bar (4) is to the end face being located at described connection bump (601), corresponding inserted is distinguished in described concave shape groove (602), described wing groove (603) in the bottom of the sidewall of described square groove (501), the bottom of described wing plate (502), to form tight fit.
2. electronic output mechanism according to claim 1, it is characterized in that, angle between the sidewall of described wing plate (502) and described square groove (501) is 120 ° ~ 150 °, accordingly, angle between described concave shape groove (602) and described wing groove (603) is 120 ° ~ 150 °, and the angle between two described wing plates (502) is 60 ° ~ 120 °.
3. electronic output mechanism according to claim 2, it is characterized in that, angle between the sidewall of described wing plate (502) and described square groove (501) is 135 °, accordingly, the angle between described concave shape groove (602) and described wing groove (603) is 135 °.
4. electronic output mechanism according to claim 1, it is characterized in that, the inside of described rubber ring (3) offers square rubber collar aperture (301), the cross section of described torsional oscillation bar (4) is square, and described torsional oscillation bar (4) is arranged through described rubber collar aperture (301).
5. electronic output mechanism according to claim 1, is characterized in that, the outside of described rubber ring (3) offers the rubber ring recess (302) of annular.
6. electronic output mechanism according to claim 1, it is characterized in that, the bottom of described brush (2) offers square brush hole (201), the cross section of described torsional oscillation bar (4) is square, and described torsional oscillation bar (4) is inserted described brush hole (201) and formed interference fit afterwards.
7. one kind adopts the electric toothbrush of the electronic output mechanism described in any one of claim 1 to 6, it is characterized in that, comprise the shell (1) with internal cavities, the inside of described shell (1) is provided with vibrating motor (8), after the internal cavities of described shell (1) is inserted from the top of described shell (1) in the bottom of described electronic output mechanism, described permanent magnet (7) interval of described electronic output mechanism corresponding described vibrating motor (8) are arranged.
8. electric toothbrush according to claim 7, is characterized in that, fastens the back cover (101) forming internal cavities and fore shell (102) before and after described shell (1) comprises;
After described back cover (101) and described fore shell (102) fasten, top forms manhole, the outside of described rubber ring (3) offers the rubber ring recess (302) of annular, and the sidewall of described manhole snaps in described rubber ring recess (302);
Fixing head (103) is provided with in described back cover (101) and described fore shell (102), described fixing head (103) offers holddown groove (104), and described vibrating motor (8) snaps in described holddown groove (104).
CN201510088038.3A 2015-02-26 2015-02-26 A kind of driver output mechanism and electric toothbrush Active CN104665948B (en)

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Application Number Priority Date Filing Date Title
CN201510088038.3A CN104665948B (en) 2015-02-26 2015-02-26 A kind of driver output mechanism and electric toothbrush

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Application Number Priority Date Filing Date Title
CN201510088038.3A CN104665948B (en) 2015-02-26 2015-02-26 A kind of driver output mechanism and electric toothbrush

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CN104665948A CN104665948A (en) 2015-06-03
CN104665948B true CN104665948B (en) 2016-04-27

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Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5378153A (en) * 1992-02-07 1995-01-03 Gemtech, Inc. High performance acoustical cleaning apparatus for teeth
EP0766537A1 (en) * 1994-06-06 1997-04-09 Teledyne Water Pik Division Of Teledyne Industries, Inc. High frequency electric toothbrush
WO1997034710A1 (en) * 1996-03-21 1997-09-25 Sunstar Inc. Vibration generating device and oral hygiene device using same
US7067945B2 (en) * 2002-05-03 2006-06-27 Koninklijke Philips Electronics N.V. Apparatus for converting side-to-side driving motion to rotational motion with a spring assembly and system for tuning the spring assembly
WO2005058190A1 (en) * 2003-12-11 2005-06-30 Koninklijke Philips Electronics, N.V. Mounted beam brushhead for a transverse drive power toothbrush
DE102007029972A1 (en) * 2007-06-28 2009-01-08 Braun Gmbh Electric toothbrush

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