CN216570312U - Ultrasonic toothbrush head driven by single chip - Google Patents
Ultrasonic toothbrush head driven by single chip Download PDFInfo
- Publication number
- CN216570312U CN216570312U CN202123345248.6U CN202123345248U CN216570312U CN 216570312 U CN216570312 U CN 216570312U CN 202123345248 U CN202123345248 U CN 202123345248U CN 216570312 U CN216570312 U CN 216570312U
- Authority
- CN
- China
- Prior art keywords
- metal electrode
- piezoelectric
- lead
- brush hair
- bristle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Brushes (AREA)
Abstract
The utility model provides a monolithic driven ultrasonic toothbrush head, its structural component is including brushing first frame, piezoelectric patches, first metal electrode, second metal electrode, first solder joint, second solder joint, brush hair base, brush hair bundle, connector, first wire, second wire. The utility model discloses use the unleaded piezoelectric material preparation ultrasonic wave component of healthy environmental protection, eradicate the tradition and contain the plumbous poison problem that the plumbous product exists, carry out the high frequency through single piezoelectric patch direct drive brush hair base simultaneously and bend the vibration of opening, show and improve ultrasonic energy conversion efficiency, improve clean tooth effect.
Description
Technical Field
The utility model belongs to the technical field of toothbrush and ultrasonic wave, concretely relates to monolithic driven ultrasonic wave toothbrush head.
Background
The ultrasonic toothbrush generates a large amount of micro bubbles through water, toothpaste and other liquid in the oral cavity by virtue of ultrasonic cavitation, the bubbles burst instantly around the teeth to generate high-pressure impact cleaning, tartar, dental plaque and the like which cannot be removed by manual tooth brushing are removed, the cleaning effect can be comprehensively deepened into gaps between teeth and even gingiva, and even uneven teeth can be comprehensively cleaned without dead angles; the ultrasonic wave can penetrate through each part of the infiltrated tooth to directly kill oral bacteria, block bacterial plaque generation, eliminate oral peculiar smell, wash and remove various dental calculus, avoid calcification of mineral substances in the oral cavity of the dental biofilm to prevent dental calculus generation, massage the oral tissue slightly hot, inhibit periodontal inflammation and gingival bleeding, prevent gingival atrophy and the like.
The existing commercially available ultrasonic toothbrush is a transduction piece which is formed by bonding lead-containing piezoelectric ceramics and a metal sheet to form a buzzer structure, and the transduction piece is arranged at the head part of the toothbrush, so that the design has at least two problems: firstly, lead exposure risks exist in the using process, and toxic lead ions in the lead-containing material can be dissolved and enter a human body, so that health is harmed; secondly, the ultrasonic waves are generated by the bending vibration of the metal sheet driven by the piezoelectric sheet and are emitted outwards through the brush hair base, so that the transmission loss is large, the energy conversion efficiency is low, and the tooth cleaning effect is influenced; the above problems are urgently needed to be solved by a novel ultrasonic toothbrush product.
Disclosure of Invention
The utility model provides a single-chip driven ultrasonic toothbrush head, which uses healthy and environment-friendly lead-free piezoelectric materials to manufacture ultrasonic elements, thereby effectively eliminating the problem of lead toxicity; meanwhile, the brush hair base is directly driven by the single piezoelectric sheet to carry out high-frequency bending vibration, so that the ultrasonic energy conversion efficiency is obviously improved, and the tooth cleaning effect is improved.
The utility model provides a monolithic driven ultrasonic wave toothbrush head, includes brush head frame, piezoelectric plate, first metal electrode, second metal electrode, first solder joint, second solder joint, brush hair base, brush hair bundle, connector, first wire, second wire.
The brush head frame is an integral outer frame of the toothbrush head and is used for supporting and fixing the brush hair base and the connector; the gaps between the brush head frame and the brush hair base, between the piezoelectric sheets and the inner cavity of the brush head frame are encapsulated by soft waterproof insulating glue.
The piezoelectric plate is a generating source of ultrasonic vibration, generates in-plane high-frequency stretching vibration under the excitation of an external driving circuit, drives the brush hair base adhered with the piezoelectric plate to perform high-frequency bending vibration, and emits ultrasonic waves outwards; part of the lower surface of the piezoelectric sheet is bonded with the corresponding supporting surface of the brush head frame by hard insulating glue.
Further, the driving voltage of the piezoelectric sheet is not higher than 36Vp-pThe driving power is not higher than 2W.
Furthermore, the piezoelectric sheets adopt a thickness direction polarization mode or an in-plane polarization mode and respectively correspond to the piezoelectric sheetsd 31Ord 15A vibration mode; the above-mentionedd 31The piezoelectric sheet in the vibration mode is polarized in the thickness direction, a driving electric field is also applied in the thickness direction, and the thickness direction stretching vibration is converted into in-plane stretching vibration by means of elastic coupling; the above-mentionedd 15The piezoelectric sheet in the vibration mode is polarized in the width direction in the plane, the driving electric field is still applied to the thickness direction, and under the excitation of the alternating electric field, the piezoelectric sheet carries out shearing vibration in the thickness direction and is converted into in-plane stretching vibration through elastic coupling.
Furthermore, the main material of the piezoelectric sheet is potassium sodium niobate-based or bismuth sodium titanate-based or barium titanate-based lead-free piezoelectric ceramic.
Further, the molar content of potassium sodium niobate and doped modified materials thereof in the potassium sodium niobate-based lead-free piezoelectric ceramic is 55-100%, wherein the mass percent of niobium element is 40-70%; the molar content of sodium bismuth titanate and doped modified materials thereof in the sodium bismuth titanate-based lead-free piezoelectric ceramic is 55-100%, wherein the mass percentage of bismuth element is 30-60%; the barium titanate-based lead-free piezoelectric ceramic contains 55-100% of barium titanate and doped modified materials thereof, wherein the mass percentage of barium is 40-70%.
The first metal electrode and the second metal electrode are positioned on two sides of the piezoelectric sheet, wherein the first metal electrode is a half-full electrode, one side of the first metal electrode, which is far away from the welding point in the length direction, is flush with the piezoelectric sheet, and one side of the first metal electrode, which is close to the welding point, is left with a certain width, and the width of the left space is not less than the thickness of the ceramic sheet; the second metal electrode is flanged to the side surface at the side of the first metal electrode where the first metal electrode is left empty.
The first welding point is positioned on the side of the first metal electrode reserved space, and the second welding point is positioned on the side surface of the second metal electrode flanging; the first metal electrode and the second metal electrode are electrically connected with the connector through a first lead and a second lead respectively.
The connector is used for mechanical connection and electric connection between the ultrasonic toothbrush head and the toothbrush handle, the connector comprises two electrodes which are respectively and electrically connected with the first lead and the second lead.
The lower surface of the brush hair base is adhered with the piezoelectric sheet, and the upper part of the brush hair base is provided with a brush hair planting blind hole for planting brush hair bundles; the bristle bundle is fixed on the bristle base through a metal sheet flocking process or a metal-free flocking process.
Furthermore, the thickness of the bristle base is preferably odd times of 1/4 or 1/4 of the ultrasonic wave wavelength, the depth of the flocking blind hole is preferably integral multiple of 1/2 or 1/2 of the ultrasonic wave wavelength, and the height of the bottom of the flocking blind hole from the lower surface of the bristle base is 1/4 of the ultrasonic wave wavelength.
Furthermore, the pattern of the bristle planting blind holes on the bristle base can be a circular point array or a combined array of circular rings, circular points, ellipses and rounded rectangles.
Drawings
Fig. 1 is a schematic diagram of the mechanism of a single-chip driven ultrasonic toothbrush head, which comprises a brush head frame 10, a piezoelectric sheet 20, a first metal electrode 21, a second metal electrode 22, a first welding spot 23, a second welding spot 24, a bristle base 30, a bristle bundle 40, a connector 50, a first lead 60 and a second lead 70.
Fig. 2 is a schematic diagram of two vibration modes of the piezoelectric sheet, wherein arrows indicate the polarization directions of the piezoelectric sheet.
Fig. 3 is a schematic view of the structure of the bristle base.
Fig. 4 shows three examples of the blind bristle hole patterns on the bristle base.
Detailed Description
Specific examples of the present invention will be described in further detail below. It should be understood that the drawings provided herein are for illustrative purposes and are not necessarily drawn to scale.
Example 1:
as shown in figure 1, the single-chip driven ultrasonic toothbrush head comprises a toothbrush head frame 10, a piezoelectric sheet 20, a first metal electrode 21, a second metal electrode 22, a first welding spot 23, a second welding spot 24, a bristle base 30, a bristle bundle 40, a connector 50, a first lead 60 and a second lead 70.
The gaps between the brush head frame 10 and the brush bristle base 30 and between the piezoelectric sheets 20 and the inner cavity of the brush head frame are encapsulated by soft waterproof insulating glue.
Part of the lower surface of the piezoelectric sheet 20 is bonded with the corresponding bearing surface 101 of the brush head frame by using hard insulating glue.
The first metal electrode 21 and the second metal electrode 22 are positioned on two sides of the piezoelectric sheet 20, wherein the first metal electrode 21 is a half-full electrode, one side of the first metal electrode, which is far away from the first welding point 23 in the length direction, is flush with the piezoelectric sheet 20, and one side of the first metal electrode, which is close to the first welding point 23, is left with a certain width, and the width of the left space is not less than the thickness of the ceramic sheet; the second metal electrode 22 is turned over to the side on the side where the first metal electrode 21 is left empty.
The first welding spot 23 is positioned on the side of the first metal electrode 21 with a space, and the second welding spot 24 is positioned on the side surface of the flanging of the second metal electrode 22; the first metal electrode 21 and the second metal electrode 23 are electrically connected to the connector 50 through a first lead 60 and a second lead 70, respectively.
The connector 50 is used for mechanical connection and electrical connection between the ultrasonic toothbrush head and the toothbrush handle, and the connector comprises two electrodes inside and is electrically connected with the first lead 60 and the second lead 70 respectively.
The lower surface of the bristle base 30 is bonded with the piezoelectric sheet 20, and the upper part of the bristle base is provided with a bristle planting blind hole for planting a bristle bundle 40; the bristle bundle 40 is connected to the bristle base 30 by a metal sheet tufting process or a metal-free tufting process.
Example 2:
as shown in figure 1, the single-chip driven ultrasonic toothbrush head comprises a toothbrush head frame 10, a piezoelectric sheet 20, a first metal electrode 21, a second metal electrode 22, a first welding spot 23, a second welding spot 24, a bristle base 30, a bristle bundle 40, a connector 50, a first lead 60 and a second lead 70.
The piezoelectric plate 20 is a generating source of ultrasonic vibration, generates in-plane high-frequency stretching vibration under the excitation of an external driving circuit, drives the brush bristle base 30 bonded with the piezoelectric plate to perform high-frequency bending vibration, and emits ultrasonic waves outwards; part of the lower surface of the piezoelectric sheet 20 is bonded with the corresponding supporting surface 101 of the brush head frame 10 by using a hard insulating adhesive.
Further, the driving voltage of the piezoelectric sheet 20 is not higher than 36Vp-pThe driving power is not higher than 2W.
Further, the piezoelectric sheets 20 adopt a thickness direction polarization mode or an in-plane polarization mode, and respectively correspond to the piezoelectric sheetsd 31Ord 15Vibration mode (201 or 202), as shown in fig. 2; the above-mentionedd 31The piezoelectric sheet 20 in the vibration mode 201 is polarized in the thickness direction, and a driving electric field is also applied in the thickness direction, so that the thickness direction stretching vibration is converted into in-plane stretching vibration by means of elastic coupling; the above-mentionedd 15The piezoelectric sheet 20 in the vibration mode 202 is polarized in the width direction in the plane, while the driving electric field is still applied in the thickness direction, and under the excitation of the alternating electric field, the piezoelectric sheet 20 performs shear vibration in the thickness direction and is converted into in-plane stretching vibration through elastic coupling.
Furthermore, the main material of the piezoelectric sheet is potassium sodium niobate-based or bismuth sodium titanate-based or barium titanate-based lead-free piezoelectric ceramic.
Further, the molar content of potassium sodium niobate and doped modified materials thereof in the potassium sodium niobate-based lead-free piezoelectric ceramic is 55-100%, wherein the mass percent of niobium element is 40-70%; the molar content of sodium bismuth titanate and doped modified materials thereof in the sodium bismuth titanate-based lead-free piezoelectric ceramic is 55-100%, wherein the mass percentage of bismuth element is 30-60%; the barium titanate-based lead-free piezoelectric ceramic contains 55-100% of barium titanate and doped modified materials thereof, wherein the mass percentage of barium is 40-70%.
Example 3:
as shown in figure 1, the single-chip driven ultrasonic toothbrush head comprises a toothbrush head frame 10, a piezoelectric sheet 20, a first metal electrode 21, a second metal electrode 22, a first welding spot 23, a second welding spot 24, a bristle base 30, a bristle bundle 40, a connector 50, a first lead 60 and a second lead 70.
The lower surface of the bristle base 30 is bonded with the piezoelectric sheet 20, and the upper part of the bristle base is provided with a bristle planting blind hole, as shown in fig. 3, for planting a bristle bundle 40; the bristle bundle 40 is connected to the bristle base 30 by a metal sheet tufting process or a metal-free tufting process.
Further, the thickness of the bristle base 30 is preferably odd times of 1/4 or 1/4 of the ultrasonic wave wavelength, the depth of the bristle-planting blind hole is preferably integral multiple of 1/2 or 1/2 of the ultrasonic wave wavelength, and the height of the bottom of the bristle-planting blind hole from the lower surface of the bristle base 30 is 1/4 of the ultrasonic wave wavelength.
Further, the pattern of the blind bristle-planting holes on the bristle base 30 may be an array of circular dots or a combination of circular rings, circular dots, ellipses and rounded rectangles, three examples of which are possible are shown in fig. 4.
The above are only some embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent replacements, or improvements within the spirit of the present invention are encompassed in the scope of the claims of the present invention.
Claims (5)
1. A single-piece driven ultrasonic toothbrush head, comprising: the brush head comprises a brush head frame, a piezoelectric sheet, a first metal electrode, a second metal electrode, a first welding point, a second welding point, a brush hair base, a brush hair bundle, a connector, a first lead and a second lead;
gaps between the brush head frame and the brush hair base, gaps between the piezoelectric sheets and an inner cavity of the brush head frame are encapsulated by soft waterproof insulating glue;
part of the lower surface of the piezoelectric sheet is bonded with the corresponding bearing surface of the brush head frame by hard insulating glue;
the first metal electrode and the second metal electrode are positioned on two sides of the piezoelectric sheet, wherein the first metal electrode is a half-full electrode, one side of the first metal electrode, which is far away from the first welding point in the length direction, is flush with the piezoelectric sheet, and one side of the first metal electrode, which is close to the first welding point, is left with a certain width, and the width of the left space is not less than the thickness of the ceramic sheet; the second metal electrode is flanged to the side surface at the side where the first metal electrode is left empty;
the first welding point is positioned on the side of the first metal electrode reserved space, and the second welding point is positioned on the side surface of the second metal electrode flanging; the first metal electrode and the second metal electrode are electrically connected with the connector through a first lead and a second lead respectively;
the connector is used for mechanical connection and electric connection between the ultrasonic toothbrush head and the toothbrush handle, and the connector comprises two electrodes which are respectively and electrically connected with the first lead and the second lead;
the lower surface of the brush hair base is adhered with the piezoelectric sheet, and the upper part of the brush hair base is provided with a brush hair planting blind hole for planting brush hair bundles; the bristle bundle is fixed on the bristle base through a metal sheet flocking process or a metal-free flocking process.
2. A single-piece driven ultrasonic toothbrush head according to claim 1 wherein the piezoelectric piece has a drive voltage of no more than 36Vp-p and a drive power of no more than 2W; the piezoelectric sheet adopts a thickness direction polarization or in-plane polarization mode.
3. The ultrasonic toothbrush head of claim 1, wherein the piezoelectric plate is made of potassium sodium niobate-based or sodium bismuth titanate-based or barium titanate-based lead-free piezoelectric ceramic.
4. A single piece driven ultrasonic toothbrush head according to claim 1 wherein the bristle base has a thickness which is an odd multiple of 1/4 or 1/4 of the ultrasonic wavelength, the blind implant holes have a depth which is an integer multiple of 1/2 or 1/2 of the ultrasonic wavelength, and the height of the bottom of the blind implant holes from the lower surface of the bristle base is 1/4 of the ultrasonic wavelength.
5. A single-piece driven ultrasonic toothbrush head according to claim 1 wherein the bristle base has blind bristle-receiving holes in a pattern of circular dot array or a combination of circular ring, circular dot, oval and rectangular rounded corner array.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123345248.6U CN216570312U (en) | 2021-12-29 | 2021-12-29 | Ultrasonic toothbrush head driven by single chip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123345248.6U CN216570312U (en) | 2021-12-29 | 2021-12-29 | Ultrasonic toothbrush head driven by single chip |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216570312U true CN216570312U (en) | 2022-05-24 |
Family
ID=81629510
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123345248.6U Active CN216570312U (en) | 2021-12-29 | 2021-12-29 | Ultrasonic toothbrush head driven by single chip |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216570312U (en) |
-
2021
- 2021-12-29 CN CN202123345248.6U patent/CN216570312U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9980796B2 (en) | Ultrasound applicator | |
| RU2535782C2 (en) | Ultrasonic teeth cleaning device having variable spatial, temporal and/or frequency characteristics | |
| US3828770A (en) | Ultrasonic method for cleaning teeth | |
| US4787847A (en) | Dental hygiene device | |
| CA2605308A1 (en) | Oral hygiene devices employing an acoustic waveguide | |
| JP4463849B2 (en) | Oral care device | |
| DE602004020252D1 (en) | TOOTHBRUSH USING AN ACOUSTIC WAVEGUIDE | |
| US9980795B2 (en) | Spatially improved extended reach ultrasonic toothbrush | |
| CN216570312U (en) | Ultrasonic toothbrush head driven by single chip | |
| KR200387246Y1 (en) | ultrasonic generating toothbrush Possible of Brushing | |
| KR101295950B1 (en) | UlTRASONOGRAPHY UTILIZATION REMOVABLE INTERDENTAL BRUSH | |
| CN116407313A (en) | Ultrasonic toothbrush head driven by single chip | |
| KR100608217B1 (en) | ultrasonic generating toothbrush | |
| CN2621627Y (en) | Toothbrush utilizing supersonic wave for cleaning teeth and gum massage | |
| EP4228547B1 (en) | Cleaning unit for a surface cleaning device | |
| CN213641336U (en) | Sound wave toothbrush | |
| KR20040049427A (en) | Ultrasonic and Ionizing Toothbrush | |
| CN116262075A (en) | Human-friendly ultrasonic toothbrush head | |
| CN108577999A (en) | A kind of intelligence communication ultrasonic wave toothwash instrument | |
| CN209847436U (en) | Ultrasonic tooth washing device | |
| CN220237085U (en) | Ultrasonic tooth cleaner | |
| KR20060104914A (en) | Ultrasonic generating toothbrush possible of brushing | |
| CN117503399A (en) | Ultrasonic tooth cleaning device | |
| KR100566398B1 (en) | Ultrasonic generating toothbrush | |
| CN113197695A (en) | Ultrasonic toothbrush head and ultrasonic toothbrush |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |