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WO2018201605A1 - Brosse à dents électrique - Google Patents

Brosse à dents électrique Download PDF

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Publication number
WO2018201605A1
WO2018201605A1 PCT/CN2017/092222 CN2017092222W WO2018201605A1 WO 2018201605 A1 WO2018201605 A1 WO 2018201605A1 CN 2017092222 W CN2017092222 W CN 2017092222W WO 2018201605 A1 WO2018201605 A1 WO 2018201605A1
Authority
WO
WIPO (PCT)
Prior art keywords
circuit
electric toothbrush
control
feedback
main control
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.)
Ceased
Application number
PCT/CN2017/092222
Other languages
English (en)
Chinese (zh)
Inventor
曹振民
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.)
Shenzhen Yunding Information Technology Co Ltd
Original Assignee
Shenzhen Yunding Information Technology 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 Shenzhen Yunding Information Technology Co Ltd filed Critical Shenzhen Yunding Information Technology Co Ltd
Publication of WO2018201605A1 publication Critical patent/WO2018201605A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • A61C17/16—Power-driven cleaning or polishing devices
    • A61C17/22—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like
    • A61C17/24—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like rotating continuously
    • A61C17/26—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like rotating continuously driven by electric motor
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors

Definitions

  • the invention relates to the field of electric toothbrushes, and in particular to an electric toothbrush.
  • the electric toothbrush With the improvement of living standards, daily oral care has received more and more attention. Among them, the electric toothbrush's cleaning ability and comfort is far superior to ordinary toothbrushes.
  • the electric toothbrush drives the brush head to vibrate through a motor, thereby cleaning the teeth.
  • most of the motor's power supply circuit does not have a current detection function, so that the power supply circuit can not immediately obtain feedback information and take power supply protection measures, so that the motor is burnt and other faults.
  • the main object of the present invention is to provide an electric toothbrush; it is intended to take protective measures in time to protect the safety of the motor when an abnormality occurs in the motor.
  • an electric toothbrush comprises a motor and a power supply circuit for supplying a driving power to the motor;
  • the power supply circuit comprises: a current monitoring circuit and a main control circuit;
  • the current monitoring circuit has a power input end, a power output end, a feedback output end, and a control receiving end, the main control circuit has a feedback receiving end and a control end; the feedback receiving end is connected to the feedback output end, The control end is connected to the control receiving end;
  • the current monitoring circuit detects a current of the output end of the current monitoring circuit, and feeds the current signal from a feedback output end to a feedback receiving end of the main control circuit, and the main control circuit feeds back according to the feedback input end
  • the signal generates a control signal and is outputted to the control receiving end of the current monitoring circuit via its control terminal to control the on and off between the power input end and the power output end.
  • a switching circuit one end of the switching circuit is connected to the power input end, and the other end is connected to the power output end; and the controlled end of the switch circuit is a control receiving end of the current monitoring circuit;
  • a current detecting circuit is connected to the power output end, and an output end of the current detecting circuit is the feedback output end.
  • the main control circuit includes a comparator; an input end of the comparator is connected to the feedback output end, and an output end of the comparator is connected to the control end;
  • the comparator compares the current value output by the feedback output terminal with a preset minimum reference current value and a maximum reference current value, and outputs the control signal according to the comparison result.
  • the main control circuit is an MCU.
  • the electric toothbrush further includes an alarm circuit, and the alarm circuit is connected to the main control circuit;
  • the alarm circuit sends an alarm signal according to the control signal generated by the main control circuit.
  • the alarm circuit includes a horn and a first drive circuit that drives the horn to operate.
  • the alarm circuit includes an indicator light and a second drive circuit that drives the indicator light to operate.
  • the second drive circuit drives the indicator light to illuminate or flash when the motor is operating abnormally.
  • the electric toothbrush further includes an alarm circuit, and the alarm circuit is connected to the current monitoring circuit;
  • the alarm circuit sends an alarm signal according to the control signal generated by the main control circuit.
  • the alarm circuit includes a horn and a first drive circuit that drives the horn to operate.
  • the alarm circuit includes an indicator light and a second drive circuit that drives the indicator light to operate.
  • the second drive circuit drives the indicator light to illuminate or flash when the motor is operating abnormally.
  • the technical scheme of the present invention controls the on/off between the power input end and the power output end by setting a current monitoring circuit, and simultaneously detecting the current value of the power output end; when the current value of the power output end is abnormal, the control module controls the The power supply module of the current monitoring module is disconnected from the power output to protect the safety of the motor.
  • FIG. 1 is a circuit block diagram of a power supply circuit portion of an electric toothbrush of the present invention.
  • Label Name 10 Current monitoring circuit Ichk Feedback receiver 20 Main control circuit CTRL Control terminal Vin Power input EN Control receiver Vout Power output C1 First capacitor Imon Feedback output C2 Second capacitor
  • the directional indication is only used to explain in a certain posture (as shown in the drawing)
  • the relative positional relationship between the components, the motion situation, and the like if the specific posture changes, the directional indication also changes accordingly.
  • first”, “second”, etc. in the embodiments of the present invention, the description of the "first”, “second”, etc. is used for the purpose of description only, and is not to be construed as an Its relative importance or implicit indication of the number of technical features indicated.
  • features defining “first” or “second” may include at least one of the features, either explicitly or implicitly.
  • the technical solutions between the various embodiments may be combined with each other, but must be based on the realization of those skilled in the art, and when the combination of the technical solutions is contradictory or impossible to implement, it should be considered that the combination of the technical solutions does not exist. It is also within the scope of protection required by the present invention.
  • the present invention provides an electric toothbrush comprising a motor (motor) and a power supply circuit for supplying a driving power to the motor; of course, the electric toothbrush further comprises a structure such as a brush head, a housing, a transmission member, etc., The structure of these components is specifically limited.
  • the power supply circuit includes a current monitoring circuit. 10 and the main control circuit 20.
  • the current monitoring circuit 10 has a power input terminal Vin, a power output terminal Vout, a feedback output terminal Imon, and a control receiving terminal EN.
  • the main control circuit 20 has a feedback receiving end Ichk and a control terminal CTRL.
  • the feedback receiving end Ichk is connected to the feedback output, and the control terminal CTRL is connected to the control receiving end EN.
  • the current monitoring circuit 10 has two functions, the first is to detect the operating current of the motor, and the second is to control the on and off of the line between the power input terminal Vin and the power output terminal Vout.
  • the current monitoring circuit 10 detects the current of the power output terminal Vout of the current monitoring circuit 10, and feeds the current signal from the feedback output terminal Imon to the feedback receiving end Ichk of the main control circuit 20, the main control circuit 20 Generating a control signal according to the signal fed back by the feedback input terminal, and outputting the control terminal CTRL to the control receiving end EN of the current monitoring circuit 10 to control the on and off between the power input terminal Vin and the power output terminal Vout.
  • the power source of the electric toothbrush enters the current monitoring module from the power input terminal Vin of the current monitoring circuit 10, and then is output by the power output terminal Vout to supply power to the motor;
  • the current detecting module it is possible to control the continuity of the line between the power input terminal Vin and the power output terminal Vout, thereby controlling the power supply to the motor; and when the operating current of the motor is abnormal, The current of the power output terminal Vout also changes accordingly, so that the operating current of the motor can be obtained by detecting the current of the power output terminal Vout.
  • the power supply circuit may further include a voltage regulating circuit, a voltage stabilizing circuit, a filter circuit, and the like, and the above circuit is not specifically limited.
  • the current monitoring module and the control module may be constructed by electrical components or may be chips.
  • the technical scheme of the present invention controls the current between the power input terminal Vin and the power output terminal Vout by setting the current monitoring circuit 10, and simultaneously detects the current value of the power output terminal Vout; when the current value of the power output terminal Vout is abnormal,
  • the control module controls disconnection between the power input terminal Vin of the current monitoring module and the power output terminal Vout to protect the safety of the motor.
  • the current monitoring circuit 10 includes a switch circuit and a current detecting circuit, one end of the switch circuit is connected to the power input terminal Vin, and the other end is connected to the power output terminal Vout; and the switch circuit is subjected to The control terminal is the control receiving terminal EN of the current monitoring circuit 10.
  • the current detecting circuit is connected to the power output terminal Vout, and an output end of the current detecting circuit is the feedback output terminal Imon.
  • the switch circuit may include a control switch, such as a MOS transistor, a triode, etc.; it is not specifically limited herein. It can be understood that the switch circuit can also include some current limiting resistors and filter capacitors. Taking the MOS transistor as an example, the control receiving terminal EN is connected to the gate of the MOS transistor.
  • the current detecting circuit may have various circuit forms, and may adopt a resistance sampling method or a Hall element to measure current or the like.
  • the main control circuit 20 includes a comparator, the input of the comparator is connected to the feedback output terminal Imon, and the output of the comparator is connected to the control terminal CTRL.
  • the comparator compares the current value output by the feedback output terminal Imon with a preset minimum reference current value and a maximum reference current value, and outputs the control signal according to the comparison result.
  • the control signal can be a level signal or a pulse signal. Taking the level signal as an example, the preset minimum reference current value and the maximum reference current value constitute a threshold interval. When the current value of the power output terminal Vout is outside the threshold interval, the main control circuit 20 The control terminal CTRL outputs a high level signal (or a low level signal); after receiving the high level signal, the control receiving end EN of the current monitoring circuit 10 controls the switch circuit to open the power input end The line between Vin and the power supply output Vout.
  • the control receiving end EN of the current monitoring circuit 10 controls the switch circuit to open the power input end The line between Vin and the power supply output Vout.
  • this embodiment is only one of them.
  • the main control circuit 20 is an MCU; the MCU working pin is rich in functions and stable in operation, which is beneficial to improving the stability of the power supply circuit.
  • the power supply circuit further includes a first capacitor C1 and a second capacitor C2; one end of the first capacitor C1 is connected to the power input terminal Vin of the current monitoring circuit 10, and the other end of the first capacitor C1 is grounded to Filtering the clue of the power input terminal Vin; one end of the second capacitor C2 is connected to the power output terminal Vout of the current monitoring circuit 10, and the other end of the second capacitor C2 is grounded to filter out the power output terminal Vout Clutter.
  • the power supply circuit is further provided with a first resistor (not shown) and a second resistor (not shown). a first end of the first resistor is connected to the feedback output terminal Imon, a second end is connected to the feedback receiving end Ichk, and a first end of the second resistor is connected to the control terminal CTRL. The second end is connected to the control receiving end EN.
  • the user can be informed in time, so that the electric toothbrush is further provided with an alarm circuit (not shown), and the alarm circuit is connected with the main control circuit 20;
  • the alarm circuit issues an alarm signal according to the control signal generated by the main control circuit 20.
  • the alarm circuit is activated when it receives a control signal that represents an abnormal operation of the motor.
  • the input end of the alarm signal can be connected to the control terminal CTRL of the main control circuit 20 or to the control receiving end EN of the current monitoring circuit.
  • the alarm circuit has various circuit forms.
  • the alarm circuit includes a speaker and a first driving circuit that drives the speaker to operate.
  • the first driving circuit may include an amplifying transistor, a pull-up resistor, a current limiting resistor, and the like, and is not specifically limited herein.
  • the first driving circuit receives a signal indicating that the motor is working abnormally, thereby driving the horn to emit an alarm sound to prompt the user.
  • the alarm circuit includes an indicator light and a second drive circuit that drives the indicator light to operate.
  • the second driving circuit may include an amplification transistor, a pull-up resistor, a current limiting resistor, and the like, which are not specifically limited herein.
  • the second driving circuit receives a signal indicating that the motor is working abnormally, so that the driving indicator lights or blinks to inform the user to drive the working state of the toothbrush at the moment.

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)
  • Control Of Direct Current Motors (AREA)

Abstract

L'invention concerne une brosse à dents électrique, comprenant un moteur et un circuit d'alimentation électrique fournissant une alimentation électrique d'entraînement au moteur; le circuit d'alimentation électrique comprend un circuit de détection de courant (10) et un circuit de commande principal (20); le circuit de détection de courant (10) comporte une borne d'entrée d'alimentation électrique (Vin), une borne de sortie d'alimentation électrique (Vout), une borne de sortie de rétroaction (Imon) et une borne de réception de commande (EN), et le circuit de commande principal (20) comprend une borne de réception de rétroaction (Ichk) et une borne de commande (CTRL); et la borne de réception de rétroaction (Ichk) est connectée à la borne de sortie de rétroaction (Imon), et la borne de commande (CTRL) est connectée à la borne de réception de commande (EN). Le circuit de détection de courant (10) détecte le courant de la borne de sortie d'alimentation électrique (Vout), et le renvoie au circuit de commande principal (20), et le circuit de commande principal (20) commande, conformément au signal renvoyé, l'état de circuit fermé et de circuit ouvert entre la borne d'entrée d'alimentation électrique (Vin) et la borne de sortie d'alimentation électrique (Vout). Lorsque la valeur de courant de la borne de sortie d'alimentation électrique est anormale, le circuit de commande principal (20) commande le circuit de détection de courant (10) pour qu'il ouvre le circuit entre la borne d'entrée d'alimentation électrique (Vin) et la borne de sortie d'alimentation électrique (Vout), de manière à protéger la sécurité du moteur.
PCT/CN2017/092222 2017-05-05 2017-07-07 Brosse à dents électrique Ceased WO2018201605A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201720504405.8U CN207410013U (zh) 2017-05-05 2017-05-05 电动牙刷
CN201720504405.8 2017-05-05

Publications (1)

Publication Number Publication Date
WO2018201605A1 true WO2018201605A1 (fr) 2018-11-08

Family

ID=62322131

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2017/092222 Ceased WO2018201605A1 (fr) 2017-05-05 2017-07-07 Brosse à dents électrique

Country Status (2)

Country Link
CN (1) CN207410013U (fr)
WO (1) WO2018201605A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110288219A (zh) * 2019-06-18 2019-09-27 广州皓醒湾科技有限公司 一种电动牙刷的检测方法、装置、电动牙刷及存储介质

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102931630A (zh) * 2012-11-21 2013-02-13 重庆西南集成电路设计有限责任公司 具有状态保持功能的过压过流保护电路
JP2013126293A (ja) * 2011-12-14 2013-06-24 Yokogawa Electric Corp 過電流保護回路
CN204333900U (zh) * 2014-12-26 2015-05-13 广东美的制冷设备有限公司 低功耗待机保护电路及空调器
CN205355779U (zh) * 2016-01-26 2016-06-29 广东工业大学 一种具有远程通知功能的过压过流保护电路
CN205375089U (zh) * 2016-01-13 2016-07-06 厦门市海菱电子有限公司 一种带隔离控制功能的供电开关电路
CN106058794A (zh) * 2016-06-22 2016-10-26 成都国星通信有限公司 一种天线短路自动保护电路与方法
CN106160118A (zh) * 2016-08-25 2016-11-23 刘茂才 一种充电型电动牙刷及其控制方法

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013126293A (ja) * 2011-12-14 2013-06-24 Yokogawa Electric Corp 過電流保護回路
CN102931630A (zh) * 2012-11-21 2013-02-13 重庆西南集成电路设计有限责任公司 具有状态保持功能的过压过流保护电路
CN204333900U (zh) * 2014-12-26 2015-05-13 广东美的制冷设备有限公司 低功耗待机保护电路及空调器
CN205375089U (zh) * 2016-01-13 2016-07-06 厦门市海菱电子有限公司 一种带隔离控制功能的供电开关电路
CN205355779U (zh) * 2016-01-26 2016-06-29 广东工业大学 一种具有远程通知功能的过压过流保护电路
CN106058794A (zh) * 2016-06-22 2016-10-26 成都国星通信有限公司 一种天线短路自动保护电路与方法
CN106160118A (zh) * 2016-08-25 2016-11-23 刘茂才 一种充电型电动牙刷及其控制方法

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