CN104688369A - Ultrasonic electric toothbrush and working mode thereof - Google Patents
Ultrasonic electric toothbrush and working mode thereof Download PDFInfo
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- CN104688369A CN104688369A CN201510060032.5A CN201510060032A CN104688369A CN 104688369 A CN104688369 A CN 104688369A CN 201510060032 A CN201510060032 A CN 201510060032A CN 104688369 A CN104688369 A CN 104688369A
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- piezoelectric ceramic
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C17/00—Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
- A61C17/16—Power-driven cleaning or polishing devices
- A61C17/20—Power-driven cleaning or polishing devices using ultrasonics
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C17/00—Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
- A61C17/16—Power-driven cleaning or polishing devices
- A61C17/22—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like
- A61C17/40—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like orbiting, e.g. nutating
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- Health & Medical Sciences (AREA)
- Dentistry (AREA)
- Epidemiology (AREA)
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- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Brushes (AREA)
Abstract
The invention relates to an ultrasonic electric toothbrush and a working mode thereof. The ultrasonic electric toothbrush comprises a toothbrush handle, toothbrush hairs, two groups of piezoceramic elements, an electrode slice, a base and a driving power supply, wherein a plurality of toothbrush hairs are arranged on the surface of one end of the toothbrush handle; the two groups of piezoceramic elements are arranged between the base and the toothbrush handle and are fixed by virtue of bolts on the base; the electrode slice is arranged between the two groups of piezoceramic elements; and the driving power supply is arranged on the base. According to the ultrasonic electric toothbrush disclosed by the invention, the two groups of piezoceramic elements are driven by an external power supply to motivate the toothbrush handle to produce a longitudinal vibration mode and a bending vibration mode, and meanwhile, the coupling modes of the two kinds of vibration are transferred to the toothbrush hairs; by virtue of the coupling of longitudinal vibration and bending vibration, surface particles on the toothbrush hairs can be subjected to slightly elliptical motion, and after the surface particles are in contact with teeth, the frictional force can be produced on a contact interface between the toothbrush hairs and the teeth when a certain preloaded pressure is externally applied; and dirt on the teeth can be cleaned under the action of the frictional force, and the effect of ultrasonically cleaning the teeth can be achieved.
Description
Technical field
The present invention relates to a kind of ultrasonic electric toothbrush and working method thereof, specifically a kind of electric toothbrush utilizing supersonic vibration to be coupled.
Background technology
Traditional electric toothbrush utilizes motor to make eccentric hammer carry out rotating and producing vibration, and by handle by this transfer of vibration to bristles, thus improve tartar removal capacity relative to manual brushes.But traditional power toothbrush structure is complicated, and cost is high, can not vibrate with ultrasonic frequency, and be difficult to remove obstinate tartar and dental calculus, cleaning effect is too low.Although patent " a kind of ultrasonic toothbrush " (201210264953.X) proposes to utilize piezoelectric ceramics to produce supersonic vibration and realizes the effect of cleaning one's teeth, but only just utilize the single ultrasonic vibrational mode of Piezoelectric Ceramics Excitation, do not utilize ultrasonic vibrational mode to be coupled fully and realize the function of ultrasonic electric toothbrush.
Summary of the invention
The present invention is intended to research and develop a kind of ultrasonic electric toothbrush and working method thereof, has that structure is simple, cost is low, it is comfortable to use, efficiently cleans one's teeth, the advantage such as good reliability.
The present invention intends by the following technical solutions:
A kind of ultrasonic electric toothbrush, comprises handle, base successively from left to right, is wherein provided with bristles above handle left end, it is characterized in that:
This ultrasonic electric toothbrush also comprises ultrasound wave driven unit, driving power;
Above-mentioned handle and base, parts in two parts have bolt arrangement, and another parts have Screw hole structure corresponding with it; Above-mentioned sound wave driven unit has tapped through hole, and sound wave driven unit is installed on above-mentioned bolt arrangement; Handle is connected with Screw hole structure by above-mentioned bolt arrangement with base, and by above-mentioned ultrasound wave driven unit clamping;
Above-mentioned ultrasound wave driven unit comprises the first piezoelectric ceramic piece, the first electrode slice, the second piezoelectric ceramic piece, the second electrode slice, the 3rd piezoelectric ceramic piece, the 3rd electrode slice, the 4th piezoelectric ceramic piece from left to right successively;
If it is X-axis positive direction that handle points to base direction;
Above-mentioned first piezoelectric ceramic piece is divided into upper and lower two polarized areas, all polarizes along thickness direction, and wherein going up polarized area polarised direction is point to x-axis forward from x-axis negative sense, and lower polarized area polarised direction is point to x-axis negative sense from x-axis forward;
Above-mentioned second piezoelectric ceramic piece is divided into upper and lower two polarized areas, all polarizes along thickness direction, and wherein going up polarized area polarised direction is point to x-axis negative sense from x-axis forward, and lower polarized area polarised direction is point to x-axis forward from x-axis negative sense;
Above-mentioned 3rd piezoelectric ceramic piece only has a polarized area, polarizes along thickness direction, and polarised direction is point to x-axis forward from x-axis negative sense;
Above-mentioned 4th piezoelectric ceramic piece only has a polarized area, polarizes along thickness direction, and polarised direction is point to x-axis negative sense from x-axis forward;
Above-mentioned handle, the second electrode slice, the equal ground connection of base;
Above-mentioned first electrode slice and the 3rd electrode slice are inputted by described power supply biphasely has the signal of telecommunication that time phase difference is 90 °.
Above-mentioned first piezoelectric ceramic piece and the second piezoelectric ceramic piece motivate n rank bending vibration modes in handle;
Above-mentioned 3rd piezoelectric ceramic piece and the 4th piezoelectric ceramic piece motivate m rank longitudinal vibration mode in handle;
The coupled vibrations of two mode is passed in bristles, and the surperficial particle in bristles will do elliptic motion a little, and after teeth contact, when the external world applies certain precompression, the contact interface of bristles and tooth will produce frictional force and remove tooth stain.
Above-mentioned driving power is installed on the right-hand member of described base, for providing the above-mentioned biphase signal of telecommunication with 90 ° of phase contrasts.
Above-mentioned to drive above-mentioned handle be cylindrical bar of variable cross-section structure left small and right large, is passed to the amplitude at bristles place for being amplified in the coupled vibrations that handle is formed.
Described first piezoelectric ceramic piece, the first electrode slice, the second piezoelectric ceramic piece, the second electrode slice, the 3rd piezoelectric ceramic piece, the 3rd electrode slice, the 4th piezoelectric ceramic piece are loop configuration, and corresponding handle is circular cross-section.When handle is square-section, above-mentioned parts are also changed accordingly.
A kind of ultrasonic electric toothbrush that the present invention proposes utilizes the piezoelectric ceramic piece of two groups of different energisation modes, handle motivates longitudinal vibration mode and bending vibration modes simultaneously, and two kinds of mode of oscillations carry out being coupled through variable cross-section width bar and are passed in bristles, and bristles will do elliptic motion.When the external world applies certain precompression, bristles and teeth contact interface will produce frictional force, utilize rubbing action to remove the dirt of dental surface, realize the supersonic vibration effect of cleaning one's teeth.Ultrasonic electric toothbrush of the present invention has not only given up complicated vibrational structure such as motor and eccentric hammer etc. that conventional power toothbrush exists, and the piezoelectric ceramics that utilizes mentioned by simultaneously compensate in patent " a kind of ultrasonic toothbrush " produces the deficiency of single supersonic vibration.
The ultrasonic energy utilizing piezo ceramic element to be formed in supersonic range internal vibration is at the cavitation effect of periodontal, a large amount of micro-bubble is produced by vibrating the liquid such as intraoral water, toothpaste, produce impacting with high pressure at around teeth bubble instant exploding to clean, can remove the tartar dental plaque etc. that manual brushes cannot be removed at all, and cleaning effect comprehensively can be deep into teeth space that manual brushes cannot brush at all even in gingiva.The present invention utilizes and is coupled at the mode of oscillation of the excitation lower tooth handle structure of piezoelectric ceramic piece, makes bristles do high frequency elliptic motion a little, realizes ultrasonic scaling function, has structure simple, good reliability, easy to manufacture, uses the advantages such as comfort and convenient.
Accompanying drawing explanation
Fig. 1 is the structural representation of ultrasonic electric toothbrush;
Fig. 2 is the structural representation of handle;
Fig. 3 is the structural representation of base;
Fig. 4 is the structural representation of the area polarizing of piezoelectric ceramic piece 3;
Fig. 5 is the structural representation of the area polarizing of piezoelectric ceramic piece 4;
Fig. 6 is the structural representation that piezoelectric ceramic piece 5 polarizes;
Fig. 7 is the structural representation that piezoelectric ceramic piece 6 polarizes
Fig. 8 is the layout of piezo ceramic element;
Fig. 9 is schematic diagram ceramic component being applied to voltage drive;
Figure 10 is handle along the mode of oscillation schematic diagram of X axle in XOY plane;
Figure 11 is handle along the mode of oscillation schematic diagram of X axle in XOZ plane;
Figure 12 is the schematic diagram that bristles does elliptic motion a little;
Wherein 1-bristles, 2-handle, 3-first piezoelectric ceramics, 4-second piezoelectric ceramics, 5-the 3rd piezoelectric ceramics, 6-the 4th piezoelectric ceramics, 7-first electrode slice, 8-second electrode slice, 9-the 3rd electrode slice, 10-base, 11-driving power, 12-longitudinal vibration mode, 13-is along the flexural vibration mode of X0Y plane, and 14-is along the flexural vibration mode of X0Z plane.
Detailed description of the invention
Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:
A kind of ultrasonic electric toothbrush and working method thereof, comprise bristles, handle, two groups of piezo ceramic elements, electrode slice, base and driving powers, as shown in Figure 1.The end surface of handle is provided with some bristles.Two groups of piezo ceramic elements are arranged in the middle of base and handle, and are fixed by the bolt on base.Electrode slice is arranged in the middle of two groups of piezoelectric ceramics.Driving power is arranged on base.Handle comprises three parts, is the column part be connected with piezoelectric ceramic piece respectively, the part of the cylindrical variable cross-section width bar part of amplify mode of oscillation and connection bristles.The column part be wherein connected with piezoelectric ceramic piece is provided with an internal thread hole, and for fixing potsherd, its structural representation as shown in Figure 2.Be fixed on by piezo ceramic element between handle and base, make handle and base form a Langevin-type transducer, one end that wherein base is connected with piezoelectric ceramics is processed to form bolt, coordinates with the screwed hole in handle.The structural representation of base as shown in Figure 3.Driving power is arranged on the other end of base, is used to provide the signal of telecommunication needed for excitation two groups of piezoelectric ceramic vibration, wherein encourage two groups of signals of telecommunication of m rank longitudinal vibration mode and n rank bending vibration modes to have the phase contrast of pi/2 in time, and m and n gets positive integer value.Piezo ceramic element is designed to the structure of center with through hole, and its external diameter is identical with the diameter of handle cylindrical bar.Wherein the first piezoelectric ceramic piece 3 and the second piezoelectric ceramic piece 4 adopt along the unidirectional polarization of thickness, and have two electrode compartments, wherein, the polarised direction of the first piezoelectric ceramic piece 3 and partitioned mode are as shown in Figure 4, the polarised direction of the second piezoelectric ceramic piece 4 and partitioned mode as shown in Figure 5, for motivating the n rank bending vibration modes of handle.3rd piezoelectric ceramic piece 5 and the 4th piezoelectric ceramic piece 6 equally also adopt along the unidirectional polarization of thickness, but only have an electrode compartments, and its polarised direction and partitioned mode are distinguished as shown in Figure 6 and Figure 7, for motivating the m rank longitudinal vibration mode of handle.Two groups of piezo ceramic elements motivate m rank longitudinal vibration mode and the n rank bending vibration modes of handle respectively, and its mounting arrangement as shown in Figure 8.Between every two panels piezoelectric ceramic piece, be provided with a slice electrode slice, for applying the signal of telecommunication to piezoelectric ceramic piece simultaneously.Wherein the concrete applying mode of the signal of telecommunication is to handle, the second electrode slice 8 and chassis ground, and the first electrode slice 7 is applied to the sine voltage signal of high frequency, the 3rd electrode slice 9 is applied to the cosinusoidal voltage signal of high frequency, it specifically applies mode as shown in Figure 9.By the excitation of two groups of piezoelectric ceramic pieces, handle will inspire the biphase mode of oscillation over time and space with 90 ° of phase contrasts, is longitudinal vibration mode and bending vibration modes, as shown in either of figures 10 or 11 respectively.Wherein bending vibration modes can be installed according to the diverse location of excitation potsherd, realize the bending vibration in two Different Plane, such as, both can motivate the bending vibration of handle in X0Y plane, as shown in Figure 10, also the bending vibration of handle in X0Z plane can be motivated, as shown in figure 11.What the present invention utilized is the bending vibration modes of handle at XOY plane.Handle motivates there is the time and phase contrast is all after the two phase vibration modal coupling of 90 °, do elliptic motion by making the surperficial particle in handle.The vibration of the particle of handle upper surface is passed to bristles end by bristles, will the particle of bristles end be forced equally to do elliptic motion a little, as shown in figure 12.In the process of cleaning one's teeth, when the external world applies certain precompression, the contact interface of bristles and tooth will produce frictional force, will remove the dirt on tooth, realize the effect cleaned one's teeth under the effect of frictional force.Meanwhile, described handle and the frequency of vibration of bristles reach the dither of supersonic band, and therefore supersonic vibration makes toothbrush of the present invention have cavitation.A large amount of micro-bubble is produced by vibrating the liquid such as intraoral water, toothpaste, produce impacting with high pressure at around teeth bubble instant exploding to clean, the tartar dental plaque etc. that manual brushes cannot be removed at all can be removed, and cleaning effect comprehensively can be deep into teeth space that manual brushes cannot brush even in gingiva at all, even if irregular tooth also can be accomplished comprehensively cleanly not stay dead angle.In addition, ultrasound wave can also penetrate each position infiltrating tooth and directly kill oral cavity bacterium, blocking-up bacterial plaque produces, remove halitosis, shake off all kinds of tartar, avoid tooth Mycoderma by the calcification of mouth mineral thus prevent the generation of dental calculus, and massage slight fever is carried out to oral cavity tissue, suppress periodontal disease and gingival hemorrhage, prevent gingival atrophy etc.
Claims (5)
1. a ultrasonic electric toothbrush, comprises handle (2), base (10) from left to right successively, is wherein provided with bristles (1) above handle (2) left end, it is characterized in that:
This ultrasonic electric toothbrush also comprises ultrasound wave driven unit, driving power (11);
Above-mentioned handle (2) and base (10), parts in two parts have bolt arrangement, and another parts have Screw hole structure corresponding with it; Above-mentioned sound wave driven unit has tapped through hole, and sound wave driven unit is installed on above-mentioned bolt arrangement; Handle (2) is connected with Screw hole structure by above-mentioned bolt arrangement with base (10), and by above-mentioned ultrasound wave driven unit clamping;
Above-mentioned ultrasound wave driven unit comprises the first piezoelectric ceramic piece (3), the first electrode slice (7), the second piezoelectric ceramic piece (4), the second electrode slice (8), the 3rd piezoelectric ceramic piece (5), the 3rd electrode slice (9), the 4th piezoelectric ceramic piece (6) from left to right successively;
If it is X-axis positive direction that handle (2) points to base (10) direction;
Above-mentioned first piezoelectric ceramic piece (3) is divided into upper and lower two polarized areas, all polarizes along thickness direction, and wherein going up polarized area polarised direction is point to x-axis forward from x-axis negative sense, and lower polarized area polarised direction is point to x-axis negative sense from x-axis forward;
Above-mentioned second piezoelectric ceramic piece (4) is divided into upper and lower two polarized areas, all polarizes along thickness direction, and wherein going up polarized area polarised direction is point to x-axis negative sense from x-axis forward, and lower polarized area polarised direction is point to x-axis forward from x-axis negative sense;
Above-mentioned 3rd piezoelectric ceramic piece (5) only has a polarized area, polarizes along thickness direction, and polarised direction is point to x-axis forward from x-axis negative sense;
Above-mentioned 4th piezoelectric ceramic piece (6) only has a polarized area, polarizes along thickness direction, and polarised direction is point to x-axis negative sense from x-axis forward;
Above-mentioned handle (2), the second electrode slice (8), base (10) be ground connection all;
Above-mentioned first electrode slice (7) and the 3rd electrode slice (9) are inputted by described power supply (11) biphasely has the signal of telecommunication that time phase difference is 90 °.
2. ultrasonic electric toothbrush according to claim 1, is characterized in that:
Above-mentioned driving power (11) is installed on the right-hand member of described base (10).
3. ultrasonic electric toothbrush according to claim 1, is characterized in that:
Above-mentioned above-mentioned handle (2) of driving is for cylindrical bar of variable cross-section structure left small and right large.
4. ultrasonic electric toothbrush according to claim 1, is characterized in that: described first piezoelectric ceramic piece (3), the first electrode slice (7), the second piezoelectric ceramic piece (4), the second electrode slice (8), the 3rd piezoelectric ceramic piece (5), the 3rd electrode slice (9), the 4th piezoelectric ceramic piece (6) are loop configuration.
5. the working method of ultrasonic electric toothbrush according to claim 1, is characterized in that comprising following process:
To be inputted by described power supply (11) at the first electrode slice (7) and the 3rd electrode slice (9) and biphase there is the signal of telecommunication that time phase difference is 90 °;
Above-mentioned first piezoelectric ceramic piece (3) and the second piezoelectric ceramic piece (4) motivate n rank bending vibration modes in handle (2);
Above-mentioned 3rd piezoelectric ceramic piece (5) and the 4th piezoelectric ceramic piece (6) motivate m rank longitudinal vibration mode in handle (2);
The coupled vibrations of two mode is passed in bristles (1), surperficial particle in bristles (1) will do elliptic motion a little, after teeth contact, when the external world applies certain precompression, bristles (1) will produce frictional force with the contact interface of tooth and remove tooth stain.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510060032.5A CN104688369B (en) | 2015-02-05 | 2015-02-05 | Ultrasonic electric toothbrush and mode of operation thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510060032.5A CN104688369B (en) | 2015-02-05 | 2015-02-05 | Ultrasonic electric toothbrush and mode of operation thereof |
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| CN104688369A true CN104688369A (en) | 2015-06-10 |
| CN104688369B CN104688369B (en) | 2016-06-01 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106691615A (en) * | 2016-12-27 | 2017-05-24 | 苏州市职业大学 | Toothbrush sleeve with longitudinal and torsional ultrasonic vibration |
| CN108771505A (en) * | 2018-07-03 | 2018-11-09 | 徐剑 | A kind of Pediluvium apparatus with ultrasonic cleaning equipment |
| CN109464207A (en) * | 2019-01-15 | 2019-03-15 | 吉林大学 | A kind of piezoelectric stack drive-type ultrasonic tooth-bruss |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2078610U (en) * | 1990-01-09 | 1991-06-12 | 孙威 | Ultrasonic tooth cleaner |
| EP1415614A2 (en) * | 2002-10-29 | 2004-05-06 | CASTELLINI S.p.A. | A dental handpiece for the removal of tartar |
| CN1511015A (en) * | 2001-05-25 | 2004-07-07 | ����ʯ��ѧԺ | Ultrasonic shaping instrument |
| CN2834457Y (en) * | 2005-11-11 | 2006-11-08 | 吴勋辉 | Supersonic tooth-cleaning machine handle |
| FR2964554A1 (en) * | 2010-09-13 | 2012-03-16 | Conception Des Applic Des Tech Electroniques Soc Pour | Surgical hand piece for treating e.g. mucosa, in dentistry field, has piezoelectric motor transmitting ultrasound waves to insert, and electrically insulating element i.e. distal element, provided between motor and distal part of transducer |
| CN102755000A (en) * | 2012-07-30 | 2012-10-31 | 王路 | Ultrasonic toothbrush |
| TWM490304U (en) * | 2013-11-04 | 2014-11-21 | Chien-Chou Chen | Full frequency ultrasonic toothbrush |
| CN204618458U (en) * | 2015-02-05 | 2015-09-09 | 南京航空航天大学 | Ultrasonic electric toothbrush |
-
2015
- 2015-02-05 CN CN201510060032.5A patent/CN104688369B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2078610U (en) * | 1990-01-09 | 1991-06-12 | 孙威 | Ultrasonic tooth cleaner |
| CN1511015A (en) * | 2001-05-25 | 2004-07-07 | ����ʯ��ѧԺ | Ultrasonic shaping instrument |
| EP1415614A2 (en) * | 2002-10-29 | 2004-05-06 | CASTELLINI S.p.A. | A dental handpiece for the removal of tartar |
| CN2834457Y (en) * | 2005-11-11 | 2006-11-08 | 吴勋辉 | Supersonic tooth-cleaning machine handle |
| FR2964554A1 (en) * | 2010-09-13 | 2012-03-16 | Conception Des Applic Des Tech Electroniques Soc Pour | Surgical hand piece for treating e.g. mucosa, in dentistry field, has piezoelectric motor transmitting ultrasound waves to insert, and electrically insulating element i.e. distal element, provided between motor and distal part of transducer |
| CN102755000A (en) * | 2012-07-30 | 2012-10-31 | 王路 | Ultrasonic toothbrush |
| TWM490304U (en) * | 2013-11-04 | 2014-11-21 | Chien-Chou Chen | Full frequency ultrasonic toothbrush |
| CN204618458U (en) * | 2015-02-05 | 2015-09-09 | 南京航空航天大学 | Ultrasonic electric toothbrush |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106691615A (en) * | 2016-12-27 | 2017-05-24 | 苏州市职业大学 | Toothbrush sleeve with longitudinal and torsional ultrasonic vibration |
| CN108771505A (en) * | 2018-07-03 | 2018-11-09 | 徐剑 | A kind of Pediluvium apparatus with ultrasonic cleaning equipment |
| CN109464207A (en) * | 2019-01-15 | 2019-03-15 | 吉林大学 | A kind of piezoelectric stack drive-type ultrasonic tooth-bruss |
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| Publication number | Publication date |
|---|---|
| CN104688369B (en) | 2016-06-01 |
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