EP1059049A1 - Handbetätigte Zahnbürste - Google Patents
Handbetätigte Zahnbürste Download PDFInfo
- Publication number
- EP1059049A1 EP1059049A1 EP99111207A EP99111207A EP1059049A1 EP 1059049 A1 EP1059049 A1 EP 1059049A1 EP 99111207 A EP99111207 A EP 99111207A EP 99111207 A EP99111207 A EP 99111207A EP 1059049 A1 EP1059049 A1 EP 1059049A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- head
- toothbrush
- handle
- bristles
- actuated
- 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.)
- Withdrawn
Links
- 230000001680 brushing effect Effects 0.000 claims description 11
- 238000004140 cleaning Methods 0.000 description 5
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46B—BRUSHES
- A46B13/00—Brushes with driven brush bodies or carriers
- A46B13/08—Brushes with driven brush bodies or carriers hand-driven
-
- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46B—BRUSHES
- A46B5/00—Brush bodies; Handles integral with brushware
- A46B5/002—Brush bodies; Handles integral with brushware having articulations, joints or flexible portions
- A46B5/0054—Brush bodies; Handles integral with brushware having articulations, joints or flexible portions designed to allow relative positioning of the head to body
- A46B5/0091—Brush bodies; Handles integral with brushware having articulations, joints or flexible portions designed to allow relative positioning of the head to body promoting relative motion during use
-
- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46B—BRUSHES
- A46B7/00—Bristle carriers arranged in the brush body
- A46B7/06—Bristle carriers arranged in the brush body movably during use, i.e. the normal brushing action causing movement
-
- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46B—BRUSHES
- A46B2200/00—Brushes characterized by their functions, uses or applications
- A46B2200/10—For human or animal care
- A46B2200/1066—Toothbrush for cleaning the teeth or dentures
Definitions
- the present invention refers to toothbrushes and in particular to an actuated toothbrush, that is to say, which can provide for a series of additional movements of its bristles besides those normally resulting from the alternating movement of the user's hand while brushing his/her teeth, so as to simplify and increase the abrasive and cleaning action of said bristles onto the dental surface during the brushing operation.
- toothbrushes provided with bristles similar to dental profiles or electric toothbrushes with mechanised bristles are not very efficient since their cleaning action on the teeth is not satisfactory, as the only motion which is transmitted to the bristles is given by the alternating movement of the user's hand while brushing his/her teeth, said heads supporting said bristles being stiffly fixed or integrally made with the handle, whereas electric toothbrushes provided with mechanised bristles are often of little convenience and rather expensive.
- the present invention aims at overcoming said known disadvantages and imperfections concerning toothbrushes by means of an actuated toothbrush, equipped with one or more groups of bristles which can be moved with a translating, sussultory, oscillating, rotating or any other kind of motion given by the movement of movable elements on the toothbrush head where said groups are fixed, the motion of said movable elements resulting from the alternating motion of the toothbrush handle while brushing one's teeth by means of suitable connecting means between said movable elements and the handle.
- the toothbrush according to the present invention advantageously changes the alternating movement of the user's hand while brushing his/her teeth into an additional alternating, rotating, oscillating, sussultory or any other kind of motion of the bristles supported by movable elements which are mounted in the toothbrush head, which cannot but help the cleaning action on the teeth during the brushing operation.
- the toothbrush according to a first form of embodiment of the present invention consists of a head 1, made for instance of plastic material, housing one or more discs 8 (in this case three), which are fixed by means of pins 10 onto the bottom of said head 1, said discs 8 being placed, with their axes of symmetry passing through the pins 10, along the longitudinal axis of the toothbrush and being reciprocally connected by means of one or more teeth 12 (in this case one) which enter one or more corresponding cavities 13 (in this case one).
- a head 1 made for instance of plastic material, housing one or more discs 8 (in this case three), which are fixed by means of pins 10 onto the bottom of said head 1, said discs 8 being placed, with their axes of symmetry passing through the pins 10, along the longitudinal axis of the toothbrush and being reciprocally connected by means of one or more teeth 12 (in this case one) which enter one or more corresponding cavities 13 (in this case one).
- One of said discs 8, advantageously for instance the first one towards the toothbrush handle 3, is connected by means of a pin 801, placed near the outer portion of said disc, to an arm 9, which is in its turn connected with a snap engagement to the toothbrush handle 3 by means of the introduction of a small ball 4, integrally made with a stem 5 connected to said handle, into a round seat 6, suitably sized to house the ball 4 mortising it, without allowing it to get out of said seat during the normal alternating movement of tooth-brushing.
- the toothbrush head 1 is also equipped with one or more openings 7 (three for instance) making it easier to wash the toothbrush after its use.
- the three groups 2 of bristles according to the form of embodiment shown in the Fig. 1 and 2 are actuated with an oscillating motion, since each of them is fixed onto the three discs 8 moved by an oscillating movement thanks to the alternating movement of the toothbrush handle 3.
- the alternating movement of the user's hand and therefore of the handle 3 during the brushing operation transmits an alternating motion to the arm 9, which, on one end, is fixed with a snap engagement through the previously mentioned coupling means (4, 5, 6) to the handle 3, whereas on the other end, said arm is connected by means of a pin 801 to one of the discs 8, preferably the first one, called hereinafter driving disc.
- the introduction movement of the stem 5 into the head 1 will cause a clockwise rotation of the driving disc 8, hinged to the arm 9 around the pin 10 fixing said disc onto the bottom of the head 1, such rotation being at least of 30°.
- the disc 8 makes a clockwise rotation
- the following disc connected to it by means of the tooth 12 of the driving disc and its cavity 13, will make the same rotation in the opposite direction, i.e. anti-clockwise. Therefore, as was said before, since all the discs 8 are reciprocally connected by means of the coupling tooth 12-cavity 13, the rotation of the driving disc will be transmitted with the same absolute value until the last disc of the head 1.
- Fig. 3 shows a second embodiment of the toothbrush according to the present invention.
- the removable head 1 of the toothbrush consists of an outer fixed part 101 and of an inner movable part 102, the latter being coupled to the toothbrush handle 3 by means of a snap engagement including a stem 5 and a small ball 4 entering a suitable seat 6, said seat being obtained integrally in the inner movable part 102 of the head.
- Said movable central part 102 is provided with one or more groups 202 of movable bristles, whereas the outer fixed part 101 is provided with one or more groups 201 of fixed bristles.
- the lower surface 1021 of the movable part 102 is characterised by an undulated contour corresponding to the undulated contour of the base surface 1011 of the fixed part of the head 1.
- the motion of the toothbrush bristles is generated by the alternating movement of the handle 3 as follows: when the handle 3 is moved alternately during the toothbrushing operation, the lower surface 1021 of the inner movable part 102, which is integral with the handle 3, is forced to move along a guide consisting of the base surface 1011 of the fixed part 102.
- the sliding movement of the movable part 101 onto the fixed part 102 results in a sussultory motion of the group 202 of bristles of the movable part with respect to the groups 201 of bristles of the fixed part, such motion allowing said group 202 of movable bristles to rise and sink of at least 1 mm with respect to the group 201 of fixed bristles.
- the fixed part 101 is provided with a suitable opening 1012 allowing the movable part 102 to move with a sussultory motion.
- the stem 5 will be made of an elastic thermopolimeric material, so that the handle 3 moves only with an alternating movement with respect to the longitudinal axis of the toothbrush.
- Fig. 4 shows a third embodiment of the toothbrush according to the present invention, in which it can be observed that the removable head 1 of the toothbrush consists of an inner movable part 103, provided with one or more groups 203 of bristles, and of an outer fixed part 104, not provided with groups of bristles; said movable part 103 is coupled with said fixed part 104 by means of an elastic ball joint 14 which is introduced with a snap engagement into a suitable round seat 15, made integrally in said fixed part 104 of the head 1.
- the coupling between the handle 3 and the toothbrush head 1 is achieved, in this particular embodiment, by pressing a cylindrical part 501 of the handle 3 with a reduced section into a suitable hole 601 of the fixed part 104 of the head 1.
- the movable part 103 can freely oscillate of 360° with respect to the fixed part 104 thanks to the elastic round joint 14, which is integral with said movable part and introduced into the suitable round seat 15, so that the group 203 of bristles which are integral with said part can follow the dental contour under every circumstance; moreover, the round joint 14, being elastic, reduces the excessive thrusts of the group 203 of bristles onto the gums.
- Fig. 5 is a top view of another form of embodiment of the toothbrush according to the present invention: in this case, the handle 3 is introduced with a snap engagement by means of the ball 4 of the stem 5 into a suitable round seat 6, obtained integrally in a stem 16 reciprocating along the longitudinal axis of the toothbrush onto a groove 17, obtained on the bottom of the removable head 1 of the toothbrush.
- movable stem 16 is provided with a series of pins 18, for instance four of them as in this drawing, which are introduced into corresponding grooves 19, obtained from the lower surface of four bristle stands 20 suitably shaped.
- One or more groups 204 of bristles are fixed onto such bristle stands, said groups coming out from suitable openings 105 carried out in the toothbrush head 1.
- the grooves 19 which must be connected with the pins 18 are obliquely oriented with respect to the longitudinal axis of the toothbrush, since their function is to allow the transverse reciprocating of the bristle stands 20 with respect to the longitudinal axis of the toothbrush when the handle 3 is given an alternating movement along said longitudinal axis of the toothbrush.
- Such reciprocating motion of the bristle groups will be led by the reciprocal contact between such groups and by the contact between their lateral upper surface 21 and the lateral surface 22 of the openings 105, as can be better observed in Fig. 6. It is possible to notice from Fig.
- bristle stands 20 which are shown here in a completely off-line position with respect to the longitudinal axis of the toothbrush, the latter being the limit position in which the stem 5 of the handle 3 is completely introduced into the toothbrush head 1, and the pins 18 are at the end of their own grooves 19.
- the stands 20, and therefore the groups 204 of bristles move in pairs in opposite transverse directions, so as to promote an efficient cleaning of the teeth during the brushing operation.
- Fig. 6 shows a side view of the form of embodiment of the present invention shown in Fig. 5, here presented along the section line VI-VI, in which it is possible to observe the particular shape of the bristle stands 20 and of the sliding stem 16, said stem being provided with a round seat 6 for the introduction with a snap engagement of the ball 4 of the stem 5 connected to the handle 3. It should be also noticed that there can be one or more openings 21, so as to promote the cleaning action of the toothbrush during the brushing operation.
Landscapes
- Brushes (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP99111207A EP1059049A1 (de) | 1999-06-09 | 1999-06-09 | Handbetätigte Zahnbürste |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP99111207A EP1059049A1 (de) | 1999-06-09 | 1999-06-09 | Handbetätigte Zahnbürste |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1059049A1 true EP1059049A1 (de) | 2000-12-13 |
Family
ID=8238328
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP99111207A Withdrawn EP1059049A1 (de) | 1999-06-09 | 1999-06-09 | Handbetätigte Zahnbürste |
Country Status (1)
| Country | Link |
|---|---|
| EP (1) | EP1059049A1 (de) |
Cited By (28)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003028581A1 (en) * | 2001-10-04 | 2003-04-10 | Halstead, Richard, Ralph | Electric toothbrush with at least one brush head |
| WO2003039397A1 (en) * | 2001-11-07 | 2003-05-15 | The Procter & Gamble Company | Complex motion toothbrush |
| WO2003063723A1 (en) * | 2002-01-31 | 2003-08-07 | Colgate-Palmolive Company | Powered toothbrush |
| WO2003063722A1 (en) * | 2002-01-31 | 2003-08-07 | Colgate-Palmolive Company | Powered toothbrush |
| WO2006055572A1 (en) * | 2004-11-17 | 2006-05-26 | Colgate-Palmolive Company | Oral care implement |
| WO2006055574A3 (en) * | 2004-11-17 | 2006-10-05 | Colgate Palmolive Co | Oral care implement |
| CN100387204C (zh) * | 2001-11-06 | 2008-05-14 | 丘奇和德怀特有限公司 | 多运动牙刷 |
| US7430778B2 (en) | 2002-01-31 | 2008-10-07 | Colgate-Palmolive Company | Powered toothbrush |
| DE202008008686U1 (de) * | 2008-06-27 | 2008-12-04 | Soiu, Peter Paul Daniel | Elektrische Zahnbürste mit mehreren, beweglichen Borsten-Segmenten |
| AU2008200589B2 (en) * | 2002-01-31 | 2009-09-10 | Colgate-Palmolive Company | Powered toothbrush |
| US7636976B2 (en) | 2002-12-30 | 2009-12-29 | The Procter & Gamble Company | Power toothbrush |
| US7640615B2 (en) | 2002-03-04 | 2010-01-05 | The Procter & Gamble Company | Electric toothbrushes |
| US7640614B2 (en) | 2001-11-06 | 2010-01-05 | The Procter & Gamble Company | Multi motion toothbrush |
| US7698771B2 (en) | 2003-12-19 | 2010-04-20 | The Procter & Gamble Company | Electric toothbrush |
| US7721376B2 (en) | 2002-09-20 | 2010-05-25 | Colgate-Palmolive Company | Oral care implement |
| DE102008060696A1 (de) * | 2008-12-08 | 2010-06-10 | Interbros Gmbh | Zahnbürste |
| US7810201B2 (en) | 2003-05-23 | 2010-10-12 | Braun Gmbh | Toothbrushes |
| US7832042B2 (en) | 1999-10-22 | 2010-11-16 | The Gillette Company | Brush head for toothbrush |
| US7861348B2 (en) | 2004-12-08 | 2011-01-04 | The Procter & Gamble Company | Electric toothbrushes |
| CN101102698B (zh) * | 2004-11-17 | 2011-06-15 | 高露洁-棕榄公司 | 口腔护理器具 |
| US8393042B2 (en) | 2002-08-09 | 2013-03-12 | Colgate-Palmolive Company | Oral care implement |
| US8561247B2 (en) | 2002-08-09 | 2013-10-22 | Colgate-Palmolive Company | Oral care implement |
| US8806695B2 (en) | 2002-08-09 | 2014-08-19 | Colgate-Palmolive Company | Oral care implement having flexibly supported cleaning elements extending in opposite directions |
| US8876221B2 (en) | 2002-08-09 | 2014-11-04 | Colgate-Palmolive Company | Oral care implement |
| US8990996B2 (en) | 2002-08-09 | 2015-03-31 | Colgate-Palmolive Company | Toothbrush |
| CN104840001A (zh) * | 2015-06-11 | 2015-08-19 | 马张娒 | 一种防尘防菌牙刷 |
| WO2016162275A1 (en) | 2015-04-08 | 2016-10-13 | Glaresmile S.R.L. | Device for brushing the teeth, having multiple brushes with rotary and/or oscillating motion |
| CN111388123A (zh) * | 2020-04-26 | 2020-07-10 | 屠西理 | 一种大幅度仿人体手臂上下运动式电动牙刷 |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5068939A (en) * | 1989-12-27 | 1991-12-03 | Ohad Paz | Brush construction including movably-mounted bristles |
| US5259083A (en) * | 1992-09-24 | 1993-11-09 | 1008335 Ontario Inc. | Mechanical toothbrush |
| FR2702636A1 (fr) * | 1993-03-16 | 1994-09-23 | Nguyen Vantam | Brosse à dents à tête mobile et à mouvement semi-rotatif. |
| US5353460A (en) * | 1993-09-24 | 1994-10-11 | Ohio Health Care Products, Inc. | Power driven toothbrush |
| US5778474A (en) * | 1995-11-01 | 1998-07-14 | Addway Engineering Limited | Mechanically driven toothbrush |
| WO1999012492A1 (en) * | 1997-09-08 | 1999-03-18 | Efi Ramon | Mechanical toothbrush |
-
1999
- 1999-06-09 EP EP99111207A patent/EP1059049A1/de not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5068939A (en) * | 1989-12-27 | 1991-12-03 | Ohad Paz | Brush construction including movably-mounted bristles |
| US5259083A (en) * | 1992-09-24 | 1993-11-09 | 1008335 Ontario Inc. | Mechanical toothbrush |
| FR2702636A1 (fr) * | 1993-03-16 | 1994-09-23 | Nguyen Vantam | Brosse à dents à tête mobile et à mouvement semi-rotatif. |
| US5353460A (en) * | 1993-09-24 | 1994-10-11 | Ohio Health Care Products, Inc. | Power driven toothbrush |
| US5778474A (en) * | 1995-11-01 | 1998-07-14 | Addway Engineering Limited | Mechanically driven toothbrush |
| WO1999012492A1 (en) * | 1997-09-08 | 1999-03-18 | Efi Ramon | Mechanical toothbrush |
Cited By (51)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7832042B2 (en) | 1999-10-22 | 2010-11-16 | The Gillette Company | Brush head for toothbrush |
| WO2003028581A1 (en) * | 2001-10-04 | 2003-04-10 | Halstead, Richard, Ralph | Electric toothbrush with at least one brush head |
| US7992244B2 (en) | 2001-10-04 | 2011-08-09 | Prineppi Frank J | Electric toothbrushes |
| US8281443B2 (en) | 2001-11-06 | 2012-10-09 | The Procter & Gamble Company | Multi-motion toothbrush |
| US7861350B2 (en) | 2001-11-06 | 2011-01-04 | The Procter & Gamble Company | Multi-motion toothbrush |
| US7640614B2 (en) | 2001-11-06 | 2010-01-05 | The Procter & Gamble Company | Multi motion toothbrush |
| CN100387204C (zh) * | 2001-11-06 | 2008-05-14 | 丘奇和德怀特有限公司 | 多运动牙刷 |
| WO2003039397A1 (en) * | 2001-11-07 | 2003-05-15 | The Procter & Gamble Company | Complex motion toothbrush |
| US7761947B2 (en) | 2001-11-07 | 2010-07-27 | The Procter & Gamble Company | Complex motion toothbrush |
| CN100531683C (zh) * | 2001-11-07 | 2009-08-26 | 宝洁公司 | 复合运动牙刷 |
| EP2090266A1 (de) * | 2002-01-31 | 2009-08-19 | Colgate-Palmolive Company | Angetriebene Zahnbürste |
| AU2003207756B2 (en) * | 2002-01-31 | 2007-12-06 | Colgate-Palmolive Company | Powered toothbrush |
| US7430778B2 (en) | 2002-01-31 | 2008-10-07 | Colgate-Palmolive Company | Powered toothbrush |
| AU2008200589B2 (en) * | 2002-01-31 | 2009-09-10 | Colgate-Palmolive Company | Powered toothbrush |
| WO2003063723A1 (en) * | 2002-01-31 | 2003-08-07 | Colgate-Palmolive Company | Powered toothbrush |
| CN100374091C (zh) * | 2002-01-31 | 2008-03-12 | 高露洁-棕榄公司 | 一种电动牙刷 |
| WO2003063722A1 (en) * | 2002-01-31 | 2003-08-07 | Colgate-Palmolive Company | Powered toothbrush |
| US7900309B2 (en) | 2002-01-31 | 2011-03-08 | Colgate-Palmolive Company | Powered toothbrush |
| US7640615B2 (en) | 2002-03-04 | 2010-01-05 | The Procter & Gamble Company | Electric toothbrushes |
| US7917984B2 (en) | 2002-03-04 | 2011-04-05 | The Procter & Gamble Company | Electric toothbrushes |
| US7725973B2 (en) | 2002-03-04 | 2010-06-01 | The Procter & Gamble Company | Electric toothbrushes |
| US8990996B2 (en) | 2002-08-09 | 2015-03-31 | Colgate-Palmolive Company | Toothbrush |
| US9167888B2 (en) | 2002-08-09 | 2015-10-27 | Colgate-Palmolive Company | Oral care implement having flexibly supported cleaning elements extending in opposite directions |
| US10512323B2 (en) | 2002-08-09 | 2019-12-24 | Colgate-Palmolive Company | Oral care implement |
| US9603441B2 (en) | 2002-08-09 | 2017-03-28 | Colgate-Palmolive Company | Toothbrush |
| US9545148B2 (en) | 2002-08-09 | 2017-01-17 | Colgate-Palmolive Company | Oral care implement |
| US8876221B2 (en) | 2002-08-09 | 2014-11-04 | Colgate-Palmolive Company | Oral care implement |
| US8839481B2 (en) | 2002-08-09 | 2014-09-23 | Colgate-Palmolive Company | Oral care implement |
| US8806695B2 (en) | 2002-08-09 | 2014-08-19 | Colgate-Palmolive Company | Oral care implement having flexibly supported cleaning elements extending in opposite directions |
| US8800093B2 (en) | 2002-08-09 | 2014-08-12 | Colgate-Palmolive Company | Oral care implement |
| US8561247B2 (en) | 2002-08-09 | 2013-10-22 | Colgate-Palmolive Company | Oral care implement |
| US8393042B2 (en) | 2002-08-09 | 2013-03-12 | Colgate-Palmolive Company | Oral care implement |
| US7721376B2 (en) | 2002-09-20 | 2010-05-25 | Colgate-Palmolive Company | Oral care implement |
| US7636976B2 (en) | 2002-12-30 | 2009-12-29 | The Procter & Gamble Company | Power toothbrush |
| US7810201B2 (en) | 2003-05-23 | 2010-10-12 | Braun Gmbh | Toothbrushes |
| US7698771B2 (en) | 2003-12-19 | 2010-04-20 | The Procter & Gamble Company | Electric toothbrush |
| AU2005307862B2 (en) * | 2004-11-17 | 2011-06-09 | Colgate-Palmolive Company | Oral care implement |
| CN101102698B (zh) * | 2004-11-17 | 2011-06-15 | 高露洁-棕榄公司 | 口腔护理器具 |
| WO2006055572A1 (en) * | 2004-11-17 | 2006-05-26 | Colgate-Palmolive Company | Oral care implement |
| KR101312797B1 (ko) * | 2004-11-17 | 2013-09-27 | 콜게이트-파아므올리브캄파니 | 구강 건강기구 |
| CN101098643B (zh) * | 2004-11-17 | 2012-06-20 | 高露洁-棕榄公司 | 口腔护理器具 |
| WO2006055574A3 (en) * | 2004-11-17 | 2006-10-05 | Colgate Palmolive Co | Oral care implement |
| US8096011B2 (en) | 2004-12-08 | 2012-01-17 | The Procter & Gamble Company | Electric toothbrushes |
| US7861348B2 (en) | 2004-12-08 | 2011-01-04 | The Procter & Gamble Company | Electric toothbrushes |
| DE202008008686U1 (de) * | 2008-06-27 | 2008-12-04 | Soiu, Peter Paul Daniel | Elektrische Zahnbürste mit mehreren, beweglichen Borsten-Segmenten |
| DE102008060696A1 (de) * | 2008-12-08 | 2010-06-10 | Interbros Gmbh | Zahnbürste |
| DE102008060696B4 (de) * | 2008-12-08 | 2020-08-13 | Interbros Gmbh | Zahnbürste |
| WO2016162275A1 (en) | 2015-04-08 | 2016-10-13 | Glaresmile S.R.L. | Device for brushing the teeth, having multiple brushes with rotary and/or oscillating motion |
| CN104840001B (zh) * | 2015-06-11 | 2016-06-01 | 马张娒 | 一种防尘防菌牙刷 |
| CN104840001A (zh) * | 2015-06-11 | 2015-08-19 | 马张娒 | 一种防尘防菌牙刷 |
| CN111388123A (zh) * | 2020-04-26 | 2020-07-10 | 屠西理 | 一种大幅度仿人体手臂上下运动式电动牙刷 |
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