CN1754522A - Electric toothbrushes - Google Patents
Electric toothbrushes Download PDFInfo
- Publication number
- CN1754522A CN1754522A CN 200410085210 CN200410085210A CN1754522A CN 1754522 A CN1754522 A CN 1754522A CN 200410085210 CN200410085210 CN 200410085210 CN 200410085210 A CN200410085210 A CN 200410085210A CN 1754522 A CN1754522 A CN 1754522A
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- Prior art keywords
- vibrator
- electric toothbrush
- brush
- ceramic element
- drive circuit
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- 239000000919 ceramic Substances 0.000 claims description 23
- 239000002356 single layer Substances 0.000 claims description 7
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 7
- 238000005452 bending Methods 0.000 description 4
- 230000003321 amplification Effects 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002040 relaxant effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Abstract
A n electric toothbrush, comprising: brush holder (13), brush head (14) and the elongated piezo-electric vibrator (10); the piezo-electric vibrator connects the brush holder with the brush head for the moving of the brush head, there are one or more battery and the drive circuit of the piezo-electric vibrator in the brush holder (13), the brush head (14) can be connected with one end of the piezo-electric vibrator (picture 2), or be separated from the vibrator and supported by the vibrator and be connected with the vibrator (picture 3), which is facilitate for the moving of the brush head driven by the vibrator.
Description
Technical field
The present invention relates to a kind of electric toothbrush.
Background technology
Conventional power toothbrush is used electromagnetic motor and eccentric hammer system or gear train.These systems are relatively expensive, volume is big and noise is arranged, and they also have higher fault rate simultaneously.
Summary of the invention
The present invention manages to provide a kind of improved electric toothbrush.
According to the present invention, a kind of electric toothbrush is provided, described electric toothbrush comprises brush holder, brush and crooked piezoelectric vibrator, described piezoelectric vibrator is connected between brush holder and the brush, is used to make described brush to produce and moves.
The drive circuit that preferably has one or more battery and piezoelectric vibrator in the described brush holder.In this case, described drive circuit decision design is in order to cause the single order crooked syntony in described vibrator.
Described piezoelectric vibrator advantageously comprises deformable metallic rod and is bonded at least one side of described bar and elongated monolayer piezo ceramic element or multilayer piezoelectric ceramic element on each side in preferred two opposite sides.
Piezo ceramic element described or that each is elongated preferably has tabular profile, and when two these elements are arranged, and described two elements are in that to be orthogonal to described two elements polarized on the planar opposite direction separately.
Described brush can be connected on the end of described piezoelectric vibrator and be used for producing mobile with described vibrator, perhaps another kind of selectable mode is, described brush can be independent of described piezoelectric vibrator and be supported and be connected on the described vibrator, so that the latter can make described brush be moved.
Can provide a kind of electric toothbrush thus, described electric toothbrush has size, low noise, directly driving, high reliability and the high effect of simple structure, compactness.
Description of drawings
In conjunction with the accompanying drawings the present invention is carried out more detailed description now, wherein:
Fig. 1 shows a kind of embodiment according to the piezoelectric vibrator in the electric toothbrush of the present invention;
Fig. 2 shows a kind of embodiment according to electric toothbrush of the present invention, comprising vibrator shown in Figure 1;
Fig. 3 shows the another kind of embodiment according to electric toothbrush of the present invention, wherein also comprises vibrator shown in Figure 1;
Fig. 4 is the circuit diagram of Fig. 2 or electric toothbrush drive circuit shown in Figure 3;
Fig. 5 is the circuit diagram of the boost converter in the circuit shown in Figure 4;
Fig. 6 is the circuit diagram of the push pull converter in the circuit shown in Figure 4; With
Fig. 7 is the circuit diagram of H bridge inverter circuit shown in Figure 4.
The specific embodiment
At first referring to Fig. 1, crooked piezoelectric vibrator 10 shown in the figure, described piezoelectric vibrator comprises usually elongated monolayer piezoelectric element or the multilayer piezoelectric element 12 on each side in deformable metallic rod 11 that is become by steel, aluminum or copper and two opposite sides that are bonded to described bar 11.No matter piezoelectric element is the preferred piezo ceramic element of monolayer or multilamellar, and described piezo ceramic element bendable goes out the plane of not stressed (relaxing) element.
As shown in Figure 2, described electric toothbrush comprises brush holder 13, brush 14 and crooked piezoelectric vibrator 10 illustrated in fig. 1, and described piezoelectric vibrator is connected between brush holder 13 and the brush 14.Described vibrator 10 1 ends are connected on the brush holder 13 in the mode of cantilever beam, and described brush 14 is connected on the other end of described vibrator 10.
The drive circuit 16 (Fig. 4) that one or more battery 15 (Fig. 4) and piezoelectric vibrator 10 are arranged in the described brush holder 13.
Described drive circuit 16 designs are in order to apply ac voltage signal to described two piezo ceramic elements 12, described ac voltage signal generally has the peak-to-peak amplitude of 200V-300V, frequency is usually between 200-600Hz, and described electric voltage frequency is adjusted to natural resonance frequency with the first-order bending vibration of described vibrator 10 quite to cause the single order crooked syntony in described vibrator 10.This will cause described vibrator 10 crooked back and forth, and makes described toothbrush head 14 reciprocating shown in arrow among Fig. 2.If use multilayer piezoelectric ceramic bending element as actuator, so described driving voltage can be reduced to 30V-60V.In this case, because therefore step-up converter circuit 18 itself can save push pull converter circuit 19 with voltage amplification up to 10 times.
Referring now to Fig. 3,, the difference of toothbrush shown in the figure and toothbrush shown in Figure 2 is: described toothbrush head 14 is independent of described piezoelectric vibrator 10 is subjected to the rod member (not shown) that for example extends between brush holder 13 and brush 14 supporting.Described brush 14 is subjected to the supporting of described rod member rotationally, and for example is connected on the free end of described vibrator 10 by hinge means flexibly illustrated in fig. 3 or ball-and-socket joint.In this embodiment, described vibrator 10 causes described brush 14 to move around around its rotation axis angledly.Can expect that described vibrator 10 can be covered by aforementioned rod member.
Drive circuit as shown in Figure 4.Boost converter 18 is connected between battery 15 and the push pull converter 19, in order to increase and regulating cell voltage and provide voltage output through regulating that size is about 10V or the voltage output through regulating that 15-50V is provided for the multilayer piezoelectric ceramic element for the monolayer piezo ceramic element.Described push pull converter 19 further with described voltage amplification to about 100-150V, be used for the monolayer piezo ceramic element.This output is fed to H bridge inverter 20 producing the alternating current operation signal of vibrator 10, and described alternating current operation signal generally has the peak-to-peak amplitude of 200V-300V (or 30V-60V) and frequency usually between 200-600Hz, as mentioned above.
Fig. 5 is the circuit diagram of described boost converter 18.
Fig. 6 is the circuit diagram of described push pull converter 19.
Fig. 7 is the circuit diagram of H bridge inverter circuit 20.
Pulsewidth modulation (PWM) generator in described push pull converter circuit 19 is used to generate high frequency (100Hz) modulation signal, and this helps to reduce the size of transducer.
Only the mode with example has provided above-described embodiment, and those of ordinary skill in the art's easy to understand does not depart from the various modification of the scope of the present invention that is limited by invention claim.
Claims (11)
1, a kind of electric toothbrush, described electric toothbrush comprise brush holder (13) and brush (14), it is characterized in that, crooked piezoelectric vibrator (10) is connected between brush holder and the brush, are used to make described brush to produce and move.
2, electric toothbrush according to claim 1 has the drive circuit (16) of one or more battery (15) and piezoelectric vibrator in the wherein said brush holder (13).
3, electric toothbrush according to claim 1 and 2, wherein said piezoelectric vibrator (10) comprise deformable metallic rod (11) and are bonded to elongated monolayer piezo ceramic element or multilayer piezoelectric ceramic element (12) at least one side of described bar.
4, electric toothbrush according to claim 3, wherein said piezoelectric vibrator (10) have elongated monolayer piezo ceramic element or the multilayer piezoelectric ceramic element (12) on each side in two opposite sides that are bonded to described bar (11).
5, according to claim 3 or 4 described electric toothbrushes, piezo ceramic element (12) wherein said or that each is elongated has tabular profile.
6, electric toothbrush according to claim 3, wherein said vibrator (10) has the tabular elongated single or multiple lift piezo ceramic element (12) on each side in two opposite sides that are bonded to described bar (11), and described two piezo ceramic elements (12) are in that to be orthogonal to described two elements (12) polarized on the planar opposite direction separately.
7, according to each described electric toothbrush in the aforementioned claim, wherein said brush (14) is connected on the end of described piezoelectric vibrator (10) and is used for producing mobile with described vibrator.
8, according to each described electric toothbrush among the claim 1-6, wherein said brush (14) can be independent of described piezoelectric vibrator (10) and be supported and be connected on the described vibrator (10), so that the latter can make described brush be moved.
9, piezoelectric transducer according to claim 2, wherein said drive circuit (16) designs in order to cause the single order crooked syntony in described vibrator (10).
10, electric toothbrush according to claim 2, the push pull converter circuit (19) in the wherein said drive circuit (16) is used to amplify voltage, and the inverter (20) in the described drive circuit (16) is used to produce the alternating current operation voltage signal.
11, electric toothbrush according to claim 10, wherein said drive circuit (16) also comprises boost converter (18), described boost converter (18) is connected between a battery/polylith battery (15) and the push pull converter (19), is used for increasing and regulating cell voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410085210 CN1754522A (en) | 2004-09-30 | 2004-09-30 | Electric toothbrushes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410085210 CN1754522A (en) | 2004-09-30 | 2004-09-30 | Electric toothbrushes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1754522A true CN1754522A (en) | 2006-04-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410085210 Pending CN1754522A (en) | 2004-09-30 | 2004-09-30 | Electric toothbrushes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1754522A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101588141B (en) * | 2008-05-21 | 2013-04-17 | 汉能科技有限公司 | Piezoelectric ceramic pump driving power supply |
-
2004
- 2004-09-30 CN CN 200410085210 patent/CN1754522A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101588141B (en) * | 2008-05-21 | 2013-04-17 | 汉能科技有限公司 | Piezoelectric ceramic pump driving power supply |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |