CN110314008B - Electric toothbrush head - Google Patents

Electric toothbrush head Download PDF

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Publication number
CN110314008B
CN110314008B CN201910629760.1A CN201910629760A CN110314008B CN 110314008 B CN110314008 B CN 110314008B CN 201910629760 A CN201910629760 A CN 201910629760A CN 110314008 B CN110314008 B CN 110314008B
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CN
China
Prior art keywords
groove
brush
transmission
traction belt
driving seat
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
Application number
CN201910629760.1A
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Chinese (zh)
Other versions
CN110314008A (en
Inventor
郭志焱
李军
兰德福
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhejiang Baolong Mechanical And Electrical Co ltd
Original Assignee
Zhejiang Baolong Mechanical And Electrical Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Zhejiang Baolong Mechanical And Electrical Co ltd filed Critical Zhejiang Baolong Mechanical And Electrical Co ltd
Priority to CN201910629760.1A priority Critical patent/CN110314008B/en
Priority to PCT/CN2019/098212 priority patent/WO2021007886A1/en
Publication of CN110314008A publication Critical patent/CN110314008A/en
Application granted granted Critical
Publication of CN110314008B publication Critical patent/CN110314008B/en
Active legal-status Critical Current
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Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61CDENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C17/00Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
    • A61C17/16Power-driven cleaning or polishing devices
    • A61C17/22Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61CDENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C17/00Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
    • A61C17/16Power-driven cleaning or polishing devices
    • A61C17/22Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like
    • A61C17/222Brush body details, e.g. the shape thereof or connection to handle

Landscapes

  • 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 an electric toothbrush head, which comprises a brush handle and a brush disc, wherein an accommodating cavity is formed in the brush handle in a hollow mode, a rotating groove is formed in one end of the brush handle, a transmission slot is formed in the other end of the brush handle, the rotating groove is communicated with the transmission slot through the accommodating cavity, the brush disc is rotatably arranged on the rotating groove, a driving seat is rotatably arranged in the accommodating cavity, a transmission rod which is used for being in transmission connection with a motor to form reciprocating rotation in the accommodating cavity is arranged on the driving seat, a reversing piece is rotatably arranged in the accommodating cavity, a traction belt is arranged in the accommodating groove, one end of the traction belt is fixedly connected with the peripheral wall of the brush disc, and the other end of the traction belt is fixedly connected with the peripheral wall of the driving seat after being reversed through the reversing piece to form transmission of the driving seat on the rotation of the brush disc. The novel brush head has the advantages that the structure is simple and reasonable, the brush disc on the brush head is effectively driven, meanwhile, the whole structure is convenient to assemble, and the noise is low during use.

Description

Electric toothbrush head
Technical Field
The invention relates to the technical field of daily necessities, in particular to a brush head structure in an electric toothbrush.
Background
At present, in daily life, electric toothbrushes are very popular, and the brush head structure of the electric toothbrushes basically comprises a brush handle, a brush disc connected to the brush handle and a transmission rod for being in transmission connection with a driving device, wherein the brush disc structure is generally provided with a brush disc seat of a cavity, a rotating disc arranged on the brush disc seat and a plurality of bundles of bristles fixedly arranged on the rotating disc, the driving device is generally a small motor, and the transmission rod and the transmission assembly are used for driving the rotating disc to rotate so as to drive the bristles to rotate, so that cleaning of an oral cavity is realized, the rotating disc is mostly round, and the bundles of bristles are uniformly distributed along the circumference of the rotating disc. However, the transmission structure of the conventional electric toothbrush head is complex, assembly is difficult, production efficiency is low, close fit between the transmission shaft and the toothbrush head is difficult to ensure, and noise is high.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the electric toothbrush head which has a simple and reasonable structure, effectively drives the brush disc on the brush head, has a convenient assembly of the whole structure and has less noise during use.
The invention provides an electric toothbrush head, which comprises a brush handle and a brush disc, wherein a containing cavity is formed in the brush handle in a hollow mode, a rotating groove is formed in one end of the brush handle, a transmission slot is formed in the other end of the brush handle, the rotating groove is communicated with the transmission slot through the containing cavity, the brush disc is rotatably arranged on the rotating groove, a driving seat is rotatably arranged in the containing cavity, a transmission rod which is used for being in transmission connection with a motor to form reciprocating rotation in the containing cavity is arranged on the driving seat, a reversing piece is rotatably arranged in the containing cavity, a traction belt is arranged in the containing groove, one end of the traction belt is fixedly connected with the peripheral wall of the brush disc, and the other end of the traction belt is fixedly connected with the peripheral wall of the driving seat after being reversed through the reversing piece to form transmission of the driving seat on the rotation of the brush disc.
The beneficial effects of setting like this are: the rotary groove is arranged on the side wall close to the end part, the brush disc is arranged in the rotary groove, the bristles of the rotary groove are arranged towards the width direction of the accommodating cavity, so that the brush disc is in a transverse state, the traction belt extending towards the accommodating cavity extends towards the length direction of the accommodating groove, the traction belt extends towards the width direction of the accommodating cavity after passing through the steering piece, the width direction and the length direction of the rotary groove are deflected in a certain range in the direction, the left and right deflection 15 degrees in the direction are contained in the direction of the length direction or the direction of the width direction, and finally the brush disc is connected with the side wall of the driving seat, the fixed connection position of the traction belt and the brush disc is positioned at the top end of the brush disc and the fixed position of the rotary seat is also positioned at the end of the rotary seat away from the reversing piece, so that when the driving seat is driven by a motor to deflect reciprocally, the deflection angle of the driving seat is preferably set to be +/-30-45 degrees, the deflection of the driving seat is avoided, the mode of the output shaft of the existing motor is also met, the traction belt can be pulled, the brush disc is driven to rotate, the structure is simple, the transmission structure is easy to realize, the elimination of the abrasion is easy, the transmission structure is easy to replace, and the transmission structure is convenient to replace, and the transmission structure is easy to install, and the transmission is convenient to replace.
The invention is further characterized in that a transmission groove is formed in the side wall of the brush disc along the circumferential direction, a positioning groove is formed in the side wall of the driving seat along the circumferential direction, the reversing piece comprises a reversing shaft and two reversing wheels which are rotatably arranged on the reversing shaft, the reversing shaft is fixedly arranged in the accommodating cavity along the width direction of the accommodating cavity, the traction belt is in an annular arrangement, one end of the traction belt is tightly sleeved on the transmission groove, and the other end of the traction belt extends along the length direction of the accommodating cavity and is tightly sleeved on the positioning groove after being changed by the reversing wheels.
The beneficial effects of setting like this are: by adopting the scheme, the traction belt is arranged into the annular form, the structure is more stable, the strength of the traction belt is higher, the service life is prolonged, the traction belt is simultaneously stretched and sleeved on the transmission groove and the positioning groove, the reciprocating traction of the turntable is realized along with the reciprocating rotation of the driving seat, the structure is simple, the response is simpler, the processing and positioning are very convenient, the production and processing efficiency is improved, and the cost is lower.
The invention is further arranged that the included angle formed by the central shaft of the brush disc and the central shaft of the driving seat is 70-120 degrees.
The beneficial effects of setting like this are: by adopting the scheme, the transmission after reversing is smoother, the structure is more stable, and the use effect of the whole structure is improved.
The invention further provides that the positioning groove is arranged in a bending way.
The beneficial effect that sets up like this is, adopts above-mentioned scheme, buckles the setting with the constant head tank for the constant head tank is bigger with the area of contact of traction area, thereby makes the drive seat rotate and drives the motion of traction area better, further improves overall structure's result of use.
The invention is further provided with a fixed groove at one end of the accommodating cavity near the rotating groove, a rotating rod is formed on the driving seat, and the rotating rod is rotatably inserted into the fixed groove to position the driving seat.
The beneficial effect of setting like this is, adopts above-mentioned scheme, sets up like this and is convenient for fix a position the installation to the drive seat for the installation is more convenient, and the location is convenient simultaneously, improves assembly efficiency.
The invention is further provided with a limiting rod at one end of the accommodating cavity, which is close to the rotating groove, a limiting groove is arranged on the side wall of the brush disc, and the limiting rod is inserted into the limiting groove to limit the rotating angle of the brush head.
The beneficial effect of setting like this is, adopts above-mentioned scheme, sets up simple structure like this, avoids brushing the excessive rotation of dish, guarantees the stability of structure.
The invention is further characterized in that a positioning sleeve is arranged on the transmission slot, a guide groove and a guide block are arranged between the positioning sleeve and the transmission slot, the guide groove and the guide block are clamped to form a shielding of the positioning sleeve on the accommodating groove, and a through hole for the transmission rod to pass through is formed in the positioning sleeve.
The beneficial effects that set up like this are, adopt above-mentioned scheme, can be better support the drive seat, guarantee that the position of drive seat is stable, shelter the holding chamber simultaneously, reduce the possibility that external dirt got into, this kind of structural connection is simple simultaneously, does benefit to the realization, improves the result of use of product.
The invention is further characterized in that a fixing hole is formed in one end, close to the transmission slot, of the driving seat, the transmission rod is inserted into the fixing hole, a wedge-shaped groove is formed in the side wall of the transmission rod, a wedge-shaped block is arranged on the inner wall of the fixing hole, and the wedge-shaped block is clamped with the wedge-shaped groove to form the fixing of the transmission rod in the fixing hole.
The beneficial effects that set up like this are, adopt above-mentioned scheme, guarantee the connection of transfer line and drive seat, easy dismounting replaces simultaneously, and fixed effectual improves the stability that whole brush head used to and result of use.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention;
FIG. 2 is a cross-sectional view of an embodiment of the present invention;
Fig. 3 is a schematic diagram of a transmission connection between a driving seat and a brush disc in an embodiment of the present invention.
Detailed Description
It can be seen from fig. 1, fig. 2 and fig. 3 that an electric toothbrush head is disclosed, including brush holder 1 and brush dish 2, brush holder 1 cavity is provided with and is formed with accommodation chamber 11, brush holder 1 one end is provided with the rotary groove, and the other end is provided with the transmission slot, the rotary groove switches on the setting through accommodation chamber 11 with the transmission slot, brush dish 2 rotates and sets up on the rotary groove, it is provided with actuating seat 3 to rotate in accommodation chamber 11, be provided with on the actuating seat 3 and be used for forming reciprocating pivoted transfer line 31 in accommodation chamber 11 with the motor transmission connection, still rotate in accommodation chamber 11 and be provided with the switching-over piece, be provided with traction belt 4 in the accommodation chamber 11, traction belt 4 one end and brush dish 2 peripheral wall fixed connection, the other end forms actuating seat 3 to the transmission of brush dish 2 rotation with actuating seat 3 peripheral wall fixed connection after the switching-over of switching-over piece. The beneficial effects of setting like this are: the brush disc 2 is arranged in the rotating groove, so that the brush disc 2 is in a transverse state, the traction belt 4 extending into the accommodating cavity 11 firstly extends towards the length direction of the accommodating groove, then changes the direction of the traction belt into the width direction of the accommodating cavity 11 after passing through the steering piece, and finally is connected with the side wall of the driving seat 3, the fixed connection position of the traction belt 4 and the brush disc 2 is preferably arranged at the top end of the brush disc 2, the fixed position of the driving seat 3 is also arranged at the end of the rotating seat 3 away from the reversing piece, when the driving seat 3 is driven by a motor to reciprocate, the deflection angle of the driving seat is preferably set to be +/-35 DEG, the deflection of the driving seat is also in accordance with the mode of the output shaft of the existing motor, the traction belt can drive the brush disc 2 to rotate from 4, the structure is simple, the abrasion between the traditional mechanical transmission structures is eliminated, the noise is reduced, the replacement structure is simple, the production and the installation is convenient, and the production and the processing efficiency is improved.
The brush plate 2 is provided with a transmission groove 21 along the circumferential direction on the side wall, the driving seat 3 is provided with a positioning groove 35 along the circumferential direction, the reversing piece comprises a reversing shaft 5 and two reversing wheels 51 which are rotatably arranged on the reversing shaft 5, the reversing shaft 5 is fixedly arranged in the accommodating cavity 11 along the width direction of the accommodating cavity 11, the traction belt 4 is in an annular arrangement, one end of the traction belt 4 is tightly sleeved on the transmission groove 21, and the other end of the traction belt extends along the length direction of the accommodating cavity 11 and is tightly sleeved on the positioning groove 35 after being reversed by the reversing wheels 51. The beneficial effects of setting like this are: by adopting the scheme, the traction belt 4 is arranged into the annular form, the structure is more stable, the strength of the traction belt 4 is higher, the service life is prolonged, the traction belt is simultaneously stretched and sleeved on the transmission groove 21 and the positioning groove 35, the reciprocating traction of the turntable is realized along with the reciprocating rotation of the driving seat 3, the structure is simple, the answer is simpler, the processing and positioning are very convenient, the production and processing efficiency is improved, and the cost is lower.
The included angle formed by the central shaft of the brush disc 2 and the central shaft of the driving seat 3 is 90 degrees, namely, the brush disc is arranged in the forward direction along the width direction of the accommodating cavity 11, and the driving seat 3 is arranged in the forward direction along the length direction of the accommodating cavity 11. The beneficial effects of setting like this are: by adopting the scheme, the transmission after reversing is smoother, the structure is more stable, and the use effect of the whole structure is improved. The brush plate 2 can be contacted with the teeth of the oral cavity in a larger area, so that the cleaning effect is improved.
The positioning groove 35 is bent. The beneficial effect of setting like this is, adopts above-mentioned scheme, buckles the setting with constant head tank 35 for constant head tank 35 is bigger with the area of contact of traction belt 4, thereby makes the motion that the rotation of drive seat 3 drove traction belt 4 better, further improves overall structure's result of use.
The end of the accommodating cavity 11, which is close to the rotating groove, is provided with a fixed groove, the driving seat 3 is provided with a rotating rod 32, and the rotating rod 32 is rotatably inserted into the fixed groove to position the driving seat 3. The beneficial effect of setting like this is, adopts above-mentioned scheme, sets up like this and is convenient for fix a position the installation to drive seat 3 for the installation is more convenient, and the location is convenient simultaneously, improves assembly efficiency.
A limit rod 12 is arranged at one end of the accommodating cavity 11, which is close to the rotating groove, a limit groove 22 is arranged on the side wall of the brush disc 2, and the limit rod 12 is inserted into the limit groove 22 to limit the rotating angle of the brush disc 2. The beneficial effect of setting like this is, adopts above-mentioned scheme, sets up simple structure like this, avoids brush dish 2 excessive rotation, guarantees the stability of structure.
The transmission slot is provided with a positioning sleeve 6, a guide groove and a guide block are arranged between the positioning sleeve 6 and the transmission slot, the guide groove and the guide block are clamped to form a shielding of the positioning sleeve 6 to the accommodating groove, and the positioning sleeve 6 is provided with a perforation for the transmission rod 31 to penetrate. The beneficial effect that sets up like this is, adopts above-mentioned scheme, and the position stability of assurance drive seat 3 is supported to drive seat 3 that can be better, shields holding chamber 11 simultaneously, reduces the possibility that external filth got into, and this kind of structural connection is simple simultaneously, does benefit to the realization, improves the result of use of product.
The end of the driving seat 3, which is close to the transmission slot, is provided with a fixing hole, the transmission rod 31 is inserted into the fixing hole, a wedge-shaped groove 34 is formed in the side wall of the transmission rod 31, a wedge-shaped block 33 is arranged on the inner wall of the fixing hole, and the wedge-shaped block 33 and the wedge-shaped groove 34 are clamped to form the fixing of the transmission rod 31 in the fixing hole. The beneficial effect who sets up like this is, adopts above-mentioned scheme, guarantees the connection of transfer line 31 and drive seat 3, and easy dismounting replaces simultaneously, and fixed effectual improves the stability that whole brush head used to and result of use.
The above embodiments are only preferred embodiments of the present invention and should not be construed as limiting the scope of the invention, and therefore, equivalent variations, such as equivalent products using similar processes and similar structures, are intended to fall within the scope of the invention as defined in the claims.

Claims (7)

1. The utility model provides an electric toothbrush brush head, includes brush holder and brush dish, brush holder cavity is provided with the holding chamber, brush holder one end is provided with the rotation groove, and the other end is provided with the transmission slot, the rotation groove switches on the setting through the holding chamber with the transmission slot, the brush dish rotates and sets up on the rotation groove, its characterized in that: the device comprises a containing cavity, and is characterized in that a driving seat is rotationally arranged in the containing cavity, a transmission rod which is used for being in transmission connection with a motor to form reciprocating rotation in the containing cavity is arranged on the driving seat, a reversing piece is rotationally arranged in the containing cavity, a traction belt is arranged in the containing cavity, one end of the traction belt is fixedly connected with the peripheral wall of the brush disc, the other end of the traction belt is fixedly connected with the peripheral wall of the driving seat after being reversed by the reversing piece to form transmission of the driving seat to the rotation of the brush disc, a transmission groove is circumferentially arranged on the side wall of the brush disc, a positioning groove is circumferentially arranged on the side wall of the driving seat, the reversing piece comprises a reversing shaft and two reversing wheels which are rotationally arranged on the reversing shaft, the reversing shaft is fixedly arranged in the containing cavity along the width direction of the containing cavity, the traction belt is annularly arranged, one end of the traction belt is tightly sleeved on the transmission groove, and the other end of the traction belt extends along the length direction of the containing cavity and is tightly sleeved on the positioning groove after being reversed.
2. The powered toothbrush head of claim 1, wherein: the included angle formed by the central shaft of the brush disc and the central shaft of the driving seat is 70-120 degrees.
3. The powered toothbrush head of claim 1, wherein: the positioning groove is bent.
4. The electric toothbrush head according to claim 1 or 2, characterized in that: the one end that is close to the rotation groove in the holding chamber is provided with the fixed slot, be formed with the dwang on the drive seat, the dwang rotates and inserts and establish in the fixed slot and form the location to the drive seat.
5. The electric toothbrush head according to claim 1 or 2, characterized in that: one end of the accommodating cavity, which is close to the rotating groove, is provided with a limiting rod, the side wall of the brush disc is provided with a limiting groove, and the limiting rod is inserted into the limiting groove to limit the rotating angle of the brush head.
6. The electric toothbrush head according to claim 1 or 2, characterized in that: the transmission slot is provided with a positioning sleeve, a guide groove and a guide block are arranged between the positioning sleeve and the transmission slot, the guide groove and the guide block are clamped to form a shielding of the positioning sleeve to the accommodating groove, and the positioning sleeve is provided with a through hole for the transmission rod to pass through.
7. The electric toothbrush head according to claim 5, wherein: the one end that the drive seat is close to the transmission slot is provided with the fixed orifices, the transfer line inserts and establishes in the fixed orifices, the wedge recess has been seted up on the transfer line lateral wall, the fixed orifices inner wall is provided with the wedge, wedge and wedge recess joint form the fixed of transfer line in the fixed orifices.
CN201910629760.1A 2019-07-12 2019-07-12 Electric toothbrush head Active CN110314008B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201910629760.1A CN110314008B (en) 2019-07-12 2019-07-12 Electric toothbrush head
PCT/CN2019/098212 WO2021007886A1 (en) 2019-07-12 2019-07-29 Electric toothbrush head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910629760.1A CN110314008B (en) 2019-07-12 2019-07-12 Electric toothbrush head

Publications (2)

Publication Number Publication Date
CN110314008A CN110314008A (en) 2019-10-11
CN110314008B true CN110314008B (en) 2024-04-30

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ID=68122075

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910629760.1A Active CN110314008B (en) 2019-07-12 2019-07-12 Electric toothbrush head

Country Status (2)

Country Link
CN (1) CN110314008B (en)
WO (1) WO2021007886A1 (en)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5577285A (en) * 1992-11-21 1996-11-26 Braun Aktiengesellschaft Electric toothbrush with rotary bristle supporting structure
US6230354B1 (en) * 1997-10-03 2001-05-15 Moulinex S.A. Electric toothbrush
CN2744317Y (en) * 2004-08-28 2005-12-07 钟文彬 Electric toothbrush
CN2790423Y (en) * 2005-03-18 2006-06-28 郑成龙 Dual-head electric toothbrush
DE202008016815U1 (en) * 2008-12-19 2009-05-20 Kluge-Meier, Michael Device for cleaning teeth and teeth (drive with air or water)
CN104771237A (en) * 2015-04-29 2015-07-15 倍雅电子护理制品(苏州)有限公司 Electric toothbrush and brush head thereof
WO2016033758A1 (en) * 2014-09-03 2016-03-10 东莞市颐美电子科技有限公司 Electric toothbrush with large swing amplitude
CN210644225U (en) * 2019-07-12 2020-06-02 浙江宝龙机电有限公司 Electric toothbrush head

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1270796A (en) * 2000-05-05 2000-10-25 牟永良 Discal electric toothbrush
CN2681701Y (en) * 2003-12-23 2005-03-02 林辉明 Double head electric tooth brush
US8992690B1 (en) * 2013-09-18 2015-03-31 Alexander Kandemir Flat belt treadmill-like rotation toothbrush
US9254185B2 (en) * 2014-02-19 2016-02-09 Luis Vila Replaceable head and image capturing toothbrush
CN105581854A (en) * 2014-10-24 2016-05-18 陈键 Nursing toothbrush
WO2016127532A1 (en) * 2015-02-15 2016-08-18 深圳市同洁科技有限公司 Electric toothbrush and vertical-brushing-type electric toothbrush
CN206355171U (en) * 2016-07-30 2017-07-28 东莞英伍电子有限公司 A kind of electric toothbrush head

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5577285A (en) * 1992-11-21 1996-11-26 Braun Aktiengesellschaft Electric toothbrush with rotary bristle supporting structure
US6230354B1 (en) * 1997-10-03 2001-05-15 Moulinex S.A. Electric toothbrush
CN2744317Y (en) * 2004-08-28 2005-12-07 钟文彬 Electric toothbrush
CN2790423Y (en) * 2005-03-18 2006-06-28 郑成龙 Dual-head electric toothbrush
DE202008016815U1 (en) * 2008-12-19 2009-05-20 Kluge-Meier, Michael Device for cleaning teeth and teeth (drive with air or water)
WO2016033758A1 (en) * 2014-09-03 2016-03-10 东莞市颐美电子科技有限公司 Electric toothbrush with large swing amplitude
CN104771237A (en) * 2015-04-29 2015-07-15 倍雅电子护理制品(苏州)有限公司 Electric toothbrush and brush head thereof
CN210644225U (en) * 2019-07-12 2020-06-02 浙江宝龙机电有限公司 Electric toothbrush head

Also Published As

Publication number Publication date
WO2021007886A1 (en) 2021-01-21
CN110314008A (en) 2019-10-11

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Inventor after: Guo Zhiyan

Inventor after: Li Jun

Inventor after: Cao Yunpeng

Inventor before: Guo Zhiyan

Inventor before: Li Jun

Inventor before: Lan Defu