CN109091259A - Toothbrush device of enclosed type - Google Patents
Toothbrush device of enclosed type Download PDFInfo
- Publication number
- CN109091259A CN109091259A CN201810790030.5A CN201810790030A CN109091259A CN 109091259 A CN109091259 A CN 109091259A CN 201810790030 A CN201810790030 A CN 201810790030A CN 109091259 A CN109091259 A CN 109091259A
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- China
- Prior art keywords
- groove
- liner
- diaphragm seal
- micropump
- facing
- Prior art date
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Classifications
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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
- A61C17/02—Rinsing or air-blowing devices, e.g. using fluid jets or comprising liquid medication
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- Health & Medical Sciences (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)
- Brushes (AREA)
Abstract
The invention discloses a kind of toothbrush device of enclosed type, including facing portion and the hand-held part being connected with the facing portion, the facing portion includes facing matrix, and in the upper of the facing matrix, lower two sides are respectively arranged to accommodate the groove of tooth, the facing matrix is provided with inwardly projecting convex edge along the longitudinal edge of groove, the liner being in U-shape in the groove equipped with cross section, several button vibrating motors are installed in the wall body of the liner, bristle is provided on the inner wall of liner, the longitudinal edge of liner is connect with the side of the convex edge towards groove, vibration reduction and cushioning layer is provided between the outer wall of liner and the inner wall of groove；The convex edge is connected with the diaphragm seal longitudinally extended far from the side of groove, when toothrow on human body and lower toothrow occlusion in the trench when, the diaphragm seal is attached on gum.The present invention can prevent the liquid brushed teeth outflow tooth brushing device and cause accidentally to inhale accidentally pharynx, while improve the comfort brushed teeth.
Description
Technical field
The present invention relates to electric toothbrush technology fields, more particularly to a kind of toothbrush device of enclosed type.
Background technique
Dental brace type tooth brushing device is a kind of electric tooth-brush, can carry out comprehensively, efficiently cleaning to tooth, and operate
It is convenient, thus, it has just been pursued by the majority of consumers since appearing on the market.
Chinese invention patent specification CN105796201A discloses dental brace type ultrasonic toothbrush, comprising: interconnected
Hand-held part and facing portion, facing portion include " U "-shaped facing matrix, and are respectively set in the upper and lower two sides of the facing matrix
For accommodating the groove of tooth；In the bottom surface of groove and two sides, bottom surface brush head and side brush head, facing matrix is respectively set
Including a hollow cavity, and multiple ultrasonic oscillators are set in the hollow cavity.
The dental brace type ultrasonic toothbrush mainly drives bottom surface brush head and side brush head by the vibration of ultrasonic oscillator
Vibration, to be cleaned to tooth, when brushing teeth, since facing portion can vibrate under the action of ultrasonic oscillator, even if groove
Edge is close to soft tissues such as gums, and the leakproofness also resulted between the edge of groove and gum is insufficient, the liquid brushed teeth
Oral cavity can be flowed into from groove, be easy to cause accidentally to inhale and accidentally swallow, and the vibration of facing portion drives oral cavity vibration, the comfort brushed teeth is poor.
Summary of the invention
For the defects in the prior art, the present invention provides a kind of toothbrush device of enclosed type, to prevent the liquid brushed teeth from flowing out
Tooth brushing device and cause accidentally to inhale and accidentally swallow, while improving the comfort brushed teeth.
The present invention provides a kind of toothbrush device of enclosed type, including facing portion and the hand-held part being connected with the facing portion,
The facing portion includes facing matrix, and is respectively arranged to accommodate the groove of tooth in the upper and lower two sides of the facing matrix,
The facing matrix is provided with inwardly projecting convex edge along the longitudinal edge of groove, is in U-shape in the groove equipped with cross section
Liner is equipped with several button vibrating motors in the wall body of the liner, bristle, the longitudinal direction of liner is provided on the inner wall of liner
Edge is connect with the side of the convex edge towards groove, and vibration reduction and cushioning layer is provided between the outer wall of liner and the inner wall of groove；
The convex edge is connected with the diaphragm seal longitudinally extended far from the side of groove, when toothrow on human body and lower toothrow are engaged in the trench
When, the diaphragm seal is attached on gum.
When being brushed teeth using the tooth brushing device, in the liner of the upper toothrow of human body and the occlusion of lower toothrow in the trench, button vibration
Anda drives liner vibration, and then cleans by the bristle in liner to tooth, and the outer wall of liner and facing matrix it
Between vibration reduction and cushioning layer have the effect of isolation vibration, therefore, when tooth brushing device of the invention is brushed teeth, only liner is vibrating, tooth
The vibration of set matrix almost can be ignored, and feel to reduce intraoral vibration when brushing teeth, improve brush teeth it is comfortable
Property；Also, diaphragm seal is connected on the convex edge of facing matrix, vibration has been isolated in facing matrix, and the vibration of liner will not cause close
Mounting vibration, therefore, when brushing teeth, diaphragm seal can closely and be firmly attached on gum, accomplish stringent edge seal, into
And it prevents the liquid brushed teeth outflow tooth brushing device and causes accidentally to inhale accidentally pharynx.
Further, the connecting pin of the diaphragm seal is provided with interconnecting piece, and the convex edge is also set up far from the side of groove
There is support portion, the support portion is set to the outside of interconnecting piece, and the interconnecting piece is connect with convex edge, and the support portion and diaphragm seal connect
It connects, several compressed springs is provided between interconnecting piece and support portion.Using the above structure, compressed spring holds out against diaphragm seal in tooth
On gum, even if there is vibration to be transferred to diaphragm seal, compressed spring can also be eliminated, and diaphragm seal still is able to be fitted tightly over gum
On, it is ensured that edge seal.
Further, the opposite side of the interconnecting piece and support portion is provided with spring mounting groove, each gained compressed spring
Both ends be connected in corresponding spring mounting groove.By the way that spring mounting groove is arranged, it can prevent compressed spring from moving
Position.
Further, the end of the support portion is provided with clamping portion, and the connecting pin of the diaphragm seal is provided with clamping and matches
Conjunction portion passes through the cooperation clamping in clamping portion and clamping engagement portion between the support portion and diaphragm seal.Support portion and diaphragm seal are logical
The mode for crossing clamping connects, and is easily installed and dismantles compressed spring.
It further, further include the first bottle body, the first micropump, the second bottle body and the second micropump；It is set in the liner
Multiple spray-holes are equipped with, first bottle body is accessed for holding toothwash liquid, the input terminal of first micropump by pipeline
The output end of first bottle body, the first micropump is connected to by pipeline with each spray-hole；It is provided on the inside of each diaphragm seal
The groove extended longitudinally, the groove be set to diaphragm seal free end and compressed spring between, second micropump it is defeated
Enter end to be connected to by pipeline with each groove, the output end of the second micropump accesses the second bottle body by pipeline.
Using the above structure, when brushing teeth, in the liner of the upper toothrow of human body and the occlusion of lower toothrow in the trench, diaphragm seal will
Upper toothrow and lower toothrow are sealed in liner, and the first micropump sprays into first bottle of intracorporal toothwash liquid in liner from spray-hole,
At this moment, the air pressure in liner increases, and the partially liq and air in liner, which pass through, is pressed into groove between diaphragm seal and gum, and second
Micropump is always maintained at work, under the action of the second micropump, negative pressure state is in groove, liquid and air flow into groove
Interior to be discharged, therefore, when being pressed into toothwash liquid, region of the diaphragm seal between its groove and free end can be protected always
It holds and is adjacent to, closes with gum, similarly, during brushing teeth, even if thering is liquid and air to pass through between diaphragm seal and gum,
It can be intercepted and be discharged by groove, thereby further ensure that edge seal.
Further, in order to optimize structure, first micropump and the second micropump are installed in the hand-held part,
The pass of first bottle body and the second bottle body is threadedly coupled with hand-held part respectively, in order to dismantle, replace the first bottle body and
Second bottle body.
Further, the vibration reduction and cushioning layer is sponge vibration reduction and cushioning layer.
Further, the facing matrix is made of rigid material, and the liner and diaphragm seal use flexible material system
At.
Beneficial effects of the present invention: (1) when tooth brushing device of the invention is brushed teeth, only liner is vibrating, facing matrix
Vibration almost can be ignored, to reduce intraoral vibration sense when brushing teeth, improve the comfort brushed teeth；(2) it brushes
When tooth, diaphragm seal can closely and be firmly attached on gum, accomplish stringent edge seal, and then prevent the liquid brushed teeth
It flows out tooth brushing device and causes accidentally to inhale accidentally pharynx.
Detailed description of the invention
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Attached drawing needed in embodiment is briefly described.In all the appended drawings, similar device or part are generally by class
As appended drawing reference identify.In attached drawing, each device or part might not be drawn according to actual ratio.
Fig. 1 is the structural schematic diagram of the embodiment of the present invention；
Fig. 2 is the A-A cross-sectional view of Fig. 1.
In attached drawing, 1 indicates facing portion；11 indicate facing matrix；12 indicate groove；13 indicate convex edge；14 indicate liner；15
Indicate button vibrating motor；16 indicate bristle；17 indicate vibration reduction and cushioning layer；18 indicate diaphragm seal；19 indicate interconnecting piece；110 tables
Show support portion；111 indicate compressed spring；112 indicate spring mounting groove；113 indicate clamping portion；114 indicate clamping engagement portion；2
Indicate hand-held part；31 indicate the first bottle body；32 indicate the first micropump；33 indicate the second bottle body；34 second micropumps；35 indicate
Indicate spray-hole；36 indicate groove.
Specific embodiment
It is described in detail below in conjunction with embodiment of the attached drawing to technical solution of the present invention.Following embodiment is only used for
Clearly illustrate technical solution of the present invention, therefore be only used as example, and cannot be used as a limitation the protection model of limitation this patent
It encloses.
As Figure 1-Figure 2, the present invention provides a kind of toothbrush device of enclosed type, including facing portion 1 and with 1 phase of facing portion
Hand-held part 2 even, facing portion 1 include facing matrix 11, and are respectively arranged to accommodate tooth in the upper and lower two sides of facing matrix 11
The groove 12 of tooth, the facing matrix 11 of the present embodiment can be used rigid metal or plastic or other material and be made.
Facing matrix 11 is provided with inwardly projecting convex edge 13 along the longitudinal edge of groove 12, is equipped with cross section in groove 12
The liner 14 being in U-shape, the liner 14 of the present embodiment can be used the flexible materials such as silica gel and be made, if being equipped in the wall body of liner 14
Dry button vibrating motor 15, is provided with bristle 16 on the inner wall of liner 14, and the longitudinal edge of liner 14 and convex edge 13 are towards groove
12 side connection, is provided with vibration reduction and cushioning layer 17, the vibration damping of the present embodiment between the outer wall of liner 14 and the inner wall of groove 12
Buffer layer 17 can be sponge vibration reduction and cushioning layer 17；Convex edge 13 is connected with the diaphragm seal longitudinally extended far from the side of groove 12
18, when toothrow on human body and lower toothrow are engaged in groove 12, diaphragm seal 18 is attached on gum, the diaphragm seal of the present embodiment
18, which can be used the flexible materials such as silica gel, is made.
When being brushed teeth using the tooth brushing device, the upper toothrow of human body and lower toothrow are engaged in the liner 14 in groove 12, button
Vibrating Anda drives liner 14 to vibrate, and then is cleaned by the bristle 16 in liner 14 to tooth, and the outer wall of liner 14
Vibration reduction and cushioning layer 17 has the effect of that vibration is isolated between facing matrix 11, and therefore, the tooth brushing device of the embodiment of the present invention is brushed teeth
When, only liner 14 is vibrating, and the vibration of facing matrix 11 almost can be ignored, to reduce when brushing teeth in oral cavity
Vibration sense, improve the comfort brushed teeth；Also, diaphragm seal 18, facing matrix are connected on the convex edge 13 of facing matrix 11
11 have been isolated vibration, and the vibration of liner 14 will not cause diaphragm seal 18 to vibrate, therefore, when brushing teeth, diaphragm seal 18 can it is close and
It is firmly attached on gum, accomplishes stringent edge seal, and then prevent the liquid brushed teeth outflow tooth brushing device and cause accidentally to inhale
It accidentally swallows, it should be noted that diaphragm seal 18 and gum were combined is the principle of sucker.
As a further improvement of the foregoing solution, the connecting pin of diaphragm seal 18 is provided with interconnecting piece 19, and convex edge 13 is far from ditch
The side of slot 12 is additionally provided with support portion 110, and support portion 110 is set to the outside of interconnecting piece 19, and interconnecting piece 19 is connect with convex edge 13,
Support portion 110 is connect with diaphragm seal 18, and several compressed springs 111, compressed spring are provided between interconnecting piece 19 and support portion 110
111 hold out against diaphragm seal 18 on gum, even if there is vibration to be transferred to diaphragm seal 18, compressed spring 111 can also be eliminated,
Diaphragm seal 18 still is able to be fitted tightly on gum, it is ensured that edge seal.
Compressed spring 111 is displaced in order to prevent, and the opposite side of interconnecting piece 19 and support portion 110 is provided with spring peace
The both ends of tankage 112, each gained compressed spring 111 are connected in corresponding spring mounting groove 112.In addition, support portion 110
End be provided with clamping portion 113, the connecting pin of diaphragm seal 18 is provided with clamping engagement portion 114, support portion 110 and diaphragm seal 18
Between by the cooperation clamping in clamping portion 113 and clamping engagement portion 114, support portion 110 and diaphragm seal 18 are by way of clamping
Connection, is easily installed and dismantles compressed spring 111.
Referring to Fig. 2, the present embodiment further includes the first bottle body 31, the first micropump 32, the second bottle body 33 and the second micropump
34；Multiple spray-holes 35 are provided in liner 14, for the first bottle body 31 for holding toothwash liquid, the input terminal of the first micropump 32 is logical
Piping accesses the first bottle body 31, and the output end of the first micropump 32 is connected to by pipeline with each spray-hole 35；Each diaphragm seal 18
Inside be provided with the groove 36 extended longitudinally, groove 36 is set between the free end and compressed spring 111 of diaphragm seal 18,
The input terminal of second micropump 34 is connected to by pipeline with each groove 36, and the output end of the second micropump 34 accesses the by pipeline
Two bottle bodies 33.
When brushing teeth, the upper toothrow of human body and lower toothrow are engaged in the liner 14 in groove 12, and diaphragm seal 18 is by upper toothrow
It is sealed in liner 14 with lower toothrow, the toothwash liquid in the first bottle body 31 is sprayed into liner 14 from spray-hole 35 by the first micropump 32
Interior, at this moment, the air pressure in liner 14 increases, and the partially liq and air in liner 14 between diaphragm seal 18 and gum by being pressed into
Groove 36, the second micropump 34 is always maintained at work, and under the action of the second micropump 34, negative pressure state is in groove 36,
Liquid and air are flowed into groove 36 and will be discharged, and therefore, when being pressed into toothwash liquid, diaphragm seal 18 is in its groove 36 and freely
Region between end can keep being adjacent to gum always, close, similarly, during brushing teeth, even if having liquid and sky
Gas passes through between diaphragm seal 18 and gum, also can be intercepted and is discharged by groove 36, thereby further ensure that edge seal.
In order to optimize structure, the first micropump 32 and the second micropump 34 are installed in hand-held part 2,31 He of the first bottle body
The pass of second bottle body 33 is threadedly coupled with hand-held part 2 respectively, in order to dismantle, replace the first bottle body 31 and the second bottle body
33。
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it is still
It is possible to modify the technical solutions described in the foregoing embodiments, or some or all of the technical features is carried out
Equivalent replacement；And these are modified or replaceed, it does not separate the essence of the corresponding technical solution various embodiments of the present invention technical side
The range of case should all cover within the scope of the claims and the description of the invention.
Claims (8)
1. a kind of toothbrush device of enclosed type, including facing portion and the hand-held part being connected with the facing portion, the facing portion includes
Facing matrix, and be respectively arranged to accommodate the groove of tooth in the upper and lower two sides of the facing matrix, it is characterised in that:
The facing matrix is provided with inwardly projecting convex edge along the longitudinal edge of groove, and it is in U that cross section is equipped in the groove
The liner of shape is equipped with several button vibrating motors in the wall body of the liner, is provided with bristle on the inner wall of liner, liner
Longitudinal edge is connect with the side of the convex edge towards groove, is provided with vibration reduction and cushioning between the outer wall of liner and the inner wall of groove
Layer；
The convex edge is connected with the diaphragm seal longitudinally extended far from the side of groove, when toothrow on human body and lower toothrow are engaged in ditch
When in slot, the diaphragm seal is attached on gum.
2. toothbrush device of enclosed type according to claim 1, it is characterised in that: the connecting pin of the diaphragm seal is provided with connection
Portion, the convex edge are additionally provided with support portion far from the side of groove, and the support portion is set to the outside of interconnecting piece, the interconnecting piece
It is connect with convex edge, the support portion is connect with diaphragm seal, and several compressed springs are provided between interconnecting piece and support portion.
3. toothbrush device of enclosed type according to claim 2, it is characterised in that: the opposite side of the interconnecting piece and support portion is equal
It is provided with spring mounting groove, the both ends of each gained compressed spring are connected in corresponding spring mounting groove.
4. toothbrush device of enclosed type according to claim 2, it is characterised in that: the end of the support portion is provided with clamping
Portion, the connecting pin of the diaphragm seal are provided with clamping engagement portion, pass through clamping portion and clamping between the support portion and diaphragm seal
The cooperation of auxiliary section is clamped.
5. toothbrush device of enclosed type according to claim 2, it is characterised in that: further include the first bottle body, the first micropump,
Two bottle bodies and the second micropump；
Be provided with multiple spray-holes in the liner, first bottle body for holding toothwash liquid, first micropump it is defeated
Enter end and the first bottle body is accessed by pipeline, the output end of the first micropump is connected to by pipeline with each spray-hole；
The groove extended longitudinally is provided on the inside of each diaphragm seal, the groove is set to free end and the pressure of diaphragm seal
Between contracting spring, the input terminal of second micropump is connected to by pipeline with each groove, and the output end of the second micropump passes through
Pipeline accesses the second bottle body.
6. toothbrush device of enclosed type according to claim 5, it is characterised in that: first micropump and the second micropump are equal
It is mounted in the hand-held part, the pass of first bottle body and the second bottle body is threadedly coupled with hand-held part respectively.
7. toothbrush device of enclosed type according to claim 1, it is characterised in that: the vibration reduction and cushioning layer is sponge vibration reduction and cushioning
Layer.
8. toothbrush device of enclosed type according to claim 1, it is characterised in that: the facing matrix uses rigid material system
At the liner and diaphragm seal are made of flexible material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810790030.5A CN109091259B (en) | 2018-07-18 | 2018-07-18 | Closed type tooth brushing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810790030.5A CN109091259B (en) | 2018-07-18 | 2018-07-18 | Closed type tooth brushing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109091259A true CN109091259A (en) | 2018-12-28 |
| CN109091259B CN109091259B (en) | 2020-11-20 |
Family
ID=64846709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810790030.5A Active CN109091259B (en) | 2018-07-18 | 2018-07-18 | Closed type tooth brushing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109091259B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109793584A (en) * | 2019-02-14 | 2019-05-24 | 电子科技大学 | A kind of electric toothbrush |
| CN110786954A (en) * | 2019-12-11 | 2020-02-14 | 安徽冠东科技有限公司 | Bite-fitting buccal electric toothbrush |
| CN111467066A (en) * | 2019-01-23 | 2020-07-31 | 刘永锋 | Intelligent toothbrush |
| WO2021237599A1 (en) * | 2020-05-28 | 2021-12-02 | 谢柏玲 | Teeth cleaning device |
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| DE10230736A1 (en) * | 2002-07-09 | 2004-01-22 | Edelmann, Johannes, Dr.phil. Dr.med.dent. | Mechanical brush for cleaning teeth and gums has frame which has same shape as jaw, on which e bristles are mounted, so that several teeth are cleaned simultaneously |
| US20090276972A1 (en) * | 2008-05-08 | 2009-11-12 | Dugan David M | Tooth brushing system |
| CN101810518A (en) * | 2010-02-22 | 2010-08-25 | 吴京兰 | Oral cavity nursing kit and nursing method |
| CN102210614A (en) * | 2010-04-08 | 2011-10-12 | Lg伊诺特有限公司 | Electric toothbrush |
| CN205054479U (en) * | 2015-09-30 | 2016-03-02 | 深圳市前海安测信息技术有限公司 | A dental guard and intelligent device for tooth is handled |
| CN105796201A (en) * | 2016-03-09 | 2016-07-27 | 陶永安 | Tooth socket type ultrasonic toothbrush |
| CN105934217A (en) * | 2014-02-21 | 2016-09-07 | 玄奇峯 | Apparatus for cleaning oral cavity |
| CN207286166U (en) * | 2017-02-28 | 2018-05-01 | 向安迪 | Dental scaler |
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2018
- 2018-07-18 CN CN201810790030.5A patent/CN109091259B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| DE10230736A1 (en) * | 2002-07-09 | 2004-01-22 | Edelmann, Johannes, Dr.phil. Dr.med.dent. | Mechanical brush for cleaning teeth and gums has frame which has same shape as jaw, on which e bristles are mounted, so that several teeth are cleaned simultaneously |
| US20090276972A1 (en) * | 2008-05-08 | 2009-11-12 | Dugan David M | Tooth brushing system |
| CN101810518A (en) * | 2010-02-22 | 2010-08-25 | 吴京兰 | Oral cavity nursing kit and nursing method |
| CN102210614A (en) * | 2010-04-08 | 2011-10-12 | Lg伊诺特有限公司 | Electric toothbrush |
| CN105934217A (en) * | 2014-02-21 | 2016-09-07 | 玄奇峯 | Apparatus for cleaning oral cavity |
| CN205054479U (en) * | 2015-09-30 | 2016-03-02 | 深圳市前海安测信息技术有限公司 | A dental guard and intelligent device for tooth is handled |
| CN105796201A (en) * | 2016-03-09 | 2016-07-27 | 陶永安 | Tooth socket type ultrasonic toothbrush |
| CN207286166U (en) * | 2017-02-28 | 2018-05-01 | 向安迪 | Dental scaler |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111467066A (en) * | 2019-01-23 | 2020-07-31 | 刘永锋 | Intelligent toothbrush |
| CN109793584A (en) * | 2019-02-14 | 2019-05-24 | 电子科技大学 | A kind of electric toothbrush |
| CN110786954A (en) * | 2019-12-11 | 2020-02-14 | 安徽冠东科技有限公司 | Bite-fitting buccal electric toothbrush |
| WO2021237599A1 (en) * | 2020-05-28 | 2021-12-02 | 谢柏玲 | Teeth cleaning device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109091259B (en) | 2020-11-20 |
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Inventor after: Xuan Yan Inventor after: Qian Jun Inventor after: Wang Lixin Inventor after: Jiang Dan Inventor after: Luo Xu Inventor after: Chen Yifu Inventor after: Yu Xin Inventor before: Han Jing Inventor before: Qian Jun Inventor before: Wang Lixin Inventor before: Jiang Dan Inventor before: Luo Xu Inventor before: Chen Yifu Inventor before: Yu Xin |