WO2021103611A1 - 一种便于自主调节转速的智能电动牙刷 - Google Patents

一种便于自主调节转速的智能电动牙刷 Download PDF

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Publication number
WO2021103611A1
WO2021103611A1 PCT/CN2020/104555 CN2020104555W WO2021103611A1 WO 2021103611 A1 WO2021103611 A1 WO 2021103611A1 CN 2020104555 W CN2020104555 W CN 2020104555W WO 2021103611 A1 WO2021103611 A1 WO 2021103611A1
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Prior art keywords
resistor
rotation speed
control chip
button
motor unit
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PCT/CN2020/104555
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English (en)
French (fr)
Inventor
邓辅秦
李伟科
陈旭林
黄永深
冯华
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五邑大学
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Publication of WO2021103611A1 publication Critical patent/WO2021103611A1/zh

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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
    • A61C17/16—Power-driven cleaning or polishing devices
    • A61C17/22—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like
    • A61C17/221—Control arrangements therefor
    • 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

Definitions

  • the invention relates to the field of electric toothbrushes, in particular to an intelligent electric toothbrush which is convenient for autonomously adjusting the rotation speed.
  • the purpose of the present invention is to provide a smart electric toothbrush that is convenient for autonomously adjusting the rotation speed, which can improve the user's tooth brushing experience and achieve more excellent tooth protection effects.
  • An intelligent electric toothbrush that is convenient for self-adjusting speed, including:
  • Toothbrush body with a built-in motor unit Toothbrush body with a built-in motor unit
  • the control chip is used to realize the overall control of the rotation speed adjustment of the motor unit, and is arranged in the toothbrush body and connected with the motor unit;
  • the first adjustment button is used to increase the rotation speed of the motor unit by a step, is arranged on the toothbrush body, and is respectively connected to the reset terminal and the first input terminal of the control chip;
  • the second adjustment button is used to decrease the rotation speed of the motor unit by the amplitude, which is arranged on the toothbrush body, and is respectively connected to the reset terminal and the second input terminal of the control chip;
  • the state control button is used to update the rotational speed adjustment state of the motor unit, is arranged on the toothbrush body, and is respectively connected with the reset terminal and the third input terminal of the control chip.
  • the rotation speed of the motor unit is changed through the first adjustment button and the second adjustment button, that is, every time the corresponding button is pressed, the rotation speed will be It can be changed in one range, so the user can adjust it very simply and conveniently, and can also know the current speed change degree in real time.
  • the user can update the speed adjustment status through the status control button to determine that the current speed is what you need.
  • the update lock can be performed, and the toothbrush will work at this speed to meet the user's needs
  • the control chip is designed to realize the overall control of the above-mentioned keys and ensure the accuracy of the user's adjustment. Therefore, the present invention has reasonable design and convenient adjustment, can improve the user's tooth brushing experience, and achieve a more excellent tooth protection effect.
  • the state control button includes a switch button for controlling the operation or stopping of the control chip and an execution button for determining the rotation speed of the motor unit.
  • the switch button is connected to the reset terminal of the control chip, so The execution button is respectively connected to the reset terminal and the third input terminal of the control chip.
  • the motor unit includes a motor drive chip and a drive motor, and the control chip is connected to the drive motor through the motor drive chip.
  • the motor drive chip adopts a DRV8850 chip.
  • the toothbrush body is provided with a display screen for real-time display of the rotation speed of the driving motor, and the display screen is connected to the data output terminal of the control chip.
  • the toothbrush body is also provided with a switch drive circuit matched with the switch button, and the switch drive circuit includes a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, and a sixth resistor.
  • the switch button is connected to the reset terminal of the control chip, and is also connected to the external power supply through the first resistor and to the reference ground through the first capacitor, and the other end of the switch button is connected to the reset terminal of the control chip.
  • the sixth resistor is connected to the base of the NPN transistor and is connected to the collector of the PNP transistor through the fifth resistor;
  • the second resistor is arranged between the base and the emitter of the PNP transistor, the fourth resistor is arranged between the base of the PNP transistor and the collector of the NPN transistor, and the second resistor Is connected in series with the fourth resistor to form a first branch, and the third resistor is connected in parallel with the first branch;
  • the emitter of the NPN transistor is connected to a reference ground, one end of the seventh resistor, and one end of the second capacitor, and the other end of the seventh resistor is connected to the sixth resistor and the base of the NPN transistor.
  • the other end of the second capacitor is respectively connected to the fifth resistor, the sixth resistor, and the reset terminal of the control chip.
  • the amplitude is 500 to 700 r/min.
  • the adjustable times of the first adjustment button and the second adjustment button are both 4 times.
  • control chip adopts the STC89C52RC chip.
  • FIG. 1 is a schematic block diagram of the structure and principle of a smart electric toothbrush that facilitates independent adjustment of rotation speed according to an embodiment of the invention
  • Fig. 2 is a schematic circuit diagram of a smart electric toothbrush that facilitates independent adjustment of the rotation speed according to an embodiment of the present invention.
  • orientation description involved such as up, down, front, back, left, right, etc. indicates the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, but only In order to facilitate the description of the present invention and simplify the description, it does not indicate or imply that the device or element referred to must have a specific orientation, be configured and operate in a specific orientation, and therefore cannot be understood as a limitation to the present invention.
  • an embodiment of the present invention provides a smart electric toothbrush that facilitates independent adjustment of the speed, including:
  • the toothbrush body 200 has a built-in motor unit 300;
  • the control chip U1 is used to realize the overall control of the speed adjustment of the motor unit 300, and is arranged in the toothbrush body 200 and connected with the motor unit 300;
  • the first adjustment button K4 is used to increase the rotation speed of the motor unit 300 by a step, which is arranged on the toothbrush body 200 and is respectively connected to the reset terminal and the first input terminal of the control chip U1;
  • the second adjustment button K3 is used to decrease the rotation speed of the motor unit 300 by a step, is arranged on the toothbrush body 200, and is respectively connected to the reset terminal and the second input terminal of the control chip U1;
  • the state control button 100 is used to update the rotational speed adjustment state of the motor unit 300, is arranged on the toothbrush body 200, and is respectively connected to the reset terminal and the third input terminal of the control chip U1.
  • the rotation speed of the motor unit 300 is changed by the first adjustment button K4 and the second adjustment button K3, that is, each time the corresponding button is pressed, the rotation speed will change by a range. Therefore, the adjustment is very simple and convenient for the user. It can also know the current speed change degree in real time.
  • the user can update the speed adjustment state through the status control button 100 to determine that the speed at this time is what you need, and you can update and lock the toothbrush body 200.
  • the rotation speed works to meet the needs of users; and the control chip U1 is designed, which can realize the overall control of the above-mentioned keys and ensure the accuracy of user adjustment.
  • the first adjustment button K4 and the second adjustment button K3 only provide speed change adjustment, which is mainly realized by the pulse width modulation (ie PWM) of the control chip U1, and the output voltage is changed by modulating the PWM cycle duty ratio, thereby Changing the rotation speed of the motor unit 300, this control method is existing in the art, and will not be repeated;
  • the specific initial rotation speed can be set by itself, and according to the inventor’s experience, it can generally be set at 5000 to 6000 r/min
  • the amplitude is 500 to 700 r/min, so that the adjustment is more in line with the healthy habits of human tooth brushing, which is summarized by the inventor, and the adjustable times of the first adjustment button K4 and the second adjustment button K3 are both set to 4 times, it can better match the current human body's brushing speed requirements, which is also summarized by the inventor;
  • the control chip U1 uses the STC89C52RC chip, the STC series of chips have good driving response capabilities and can perfectly adapt to
  • the state control button 100 includes a switch button K1 for controlling the operation or stopping of the control chip U1 and an execution button K2 for determining the rotation speed of the motor unit 300.
  • the switch button K1 is connected to the reset terminal of the control chip U1, and the execution button K2 They are respectively connected to the reset terminal and the third input terminal of the control chip U1.
  • the switch button K1 can facilitate the user to choose whether to turn on the control chip U1 for work, and can be adjusted at any time, which has the power saving and concise effect; the execution case can send the user's final adjustment result to the control chip U1, so as to realize the confirmation of the rotation speed. Pass, this is very necessary, it can prevent the user from wrongly pressing the first adjustment button K4 or the second adjustment button K3 and the bad consequences caused by mistakenly pressing, that is, it can ensure that the user can make adjustments more conveniently.
  • the motor unit 300 includes two parts, namely a motor drive chip U2 and a drive motor B1.
  • the control chip U1 is connected to the drive motor B1 through the motor drive chip U2.
  • the motor drive chip U2 realizes the stable drive of the drive motor B1, which has a more stable and reliable drive effect and ensures the drive stability of the drive motor B1.
  • the motor drive chip U2 uses the DRV8850 chip, which has stable performance and is convenient Obtained, suitable for industrial use.
  • the inventor also designed a switch drive circuit 400 matched with the switch button K1 to realize good communication between the switch button K1 and the control chip U1.
  • the switch drive circuit 400 is arranged in the toothbrush body 200, Including a first resistor R21, a second resistor R15, a third resistor R16, a fourth resistor R17, a fifth resistor R18, a sixth resistor R19, a seventh resistor R20, a first capacitor C9, a second capacitor C8, a PNP transistor Q3 and NPN transistor Q2; one end of the switch button K1 is connected to the reset terminal of the control chip U1, and is also connected to the external power supply through the first resistor R21 and to the reference ground through the first capacitor C9, and the other end of the switch button K1 passes through the sixth
  • the resistor R19 is connected to the base of the NPN transistor Q2 and is connected to the collector of the PNP transistor Q3 through the fifth resistor R18; the second resistor R15 is set between the base and the emit
  • the other end of the seventh resistor R20 is connected to the sixth resistor R19 and the base of the NPN transistor Q2.
  • the other end of the second capacitor C8 is connected to the fifth resistor. R18, the sixth resistor R19 and the reset terminal of the control chip U1.
  • both the NPN transistor Q2 and the PNP transistor Q3 work in the saturation region.
  • the base of the NPN transistor Q2 is turned on at a high level and is turned off at a low level, while the PNP transistor Q3 is opposite, because the control chip U1
  • the current of the output high and low level signals is relatively small, so sometimes its ability to drive peripherals is unstable. Therefore, adding a switch drive circuit 400 based on the cascade connection of NPN transistor Q2 and PNP transistor Q3 can increase the control chip U1 The driving ability.
  • the first resistor R21 and the first capacitor C9 cooperate to play the role of output filtering
  • the second resistor R15, the third resistor R16 and the fourth resistor R17 are used as the output load of the PNP transistor Q3, which can play the role of stabilizing load.
  • the fifth resistor R18, the sixth resistor R19, and the seventh resistor R20 can provide a stable driving force for the NPN transistor Q2, and the second capacitor C8 plays a role of secondary filtering.
  • the toothbrush body 200 is provided with a display screen U3 for real-time display of the rotation speed of the driving motor B1, and the display screen U3 is connected to the data output terminal of the control chip U1.
  • this setting is convenient for the user to understand the rotation speed of the driving motor B1 in real time, which is more clear and can provide the user with a reference for brushing teeth.
  • the OLED display screen U3 is used.

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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

一种便于自主调节转速的智能电动牙刷，包括：牙刷体（200），内置有电机单元（300）；以及控制芯片（U1），用于实现电机单元（300）转速调节的统筹控制，设置于牙刷体（200）内，与电机单元（300）相连接；第一调节按键（K4），用于以一幅度按次增加电机单元（300）的转速，设置于牙刷体（200）上，分别与控制芯片（U1）的复位端以及第一输入端相连接；第二调节按键（K3），用于以相同的幅度按次降低电机单元（300）的转速，设置于牙刷体（200）上，分别与控制芯片（U1）的复位端以及第二输入端相连接；状态控制按键（100），用于更新电机单元（300）的转速调节状态，设置于牙刷体（200）上，分别与控制芯片（U1）的复位端以及第三输入端相连接。这样的智能电动牙刷能够提高用户的刷牙体验。

Description

一种便于自主调节转速的智能电动牙刷 技术领域
本发明涉及电动牙刷领域，尤其是一种便于自主调节转速的智能电动牙刷。
背景技术
口腔作为人体的重要器官，其重要性越来越受到人们的重视，牙齿作为口腔的器官之一，重要性不言而喻，对牙齿的保护除了专业的医疗护理之外，用户平日的刷牙也至关重要。因此，市面上相应产生了电动牙刷，能够代替手工刷牙，更方便用户刷牙，但是目前市面上的电动牙刷所提供的刷牙转速一般是固定不变的，针对不同程度牙齿的用户，刷牙感受不能保证都是良好的，若是长期以不符合牙齿需求的转速进行电动刷牙，反而会损害用户的牙齿和口腔。
发明内容
为了解决上述问题，本发明的目的是提供一种便于自主调节转速的智能电动牙刷，能够提高用户的刷牙体验，取得更为优异的牙齿保护效果。
为了弥补现有技术的不足，本发明实施例采用的技术方案是：
一种便于自主调节转速的智能电动牙刷，包括：
牙刷体，内置有电机单元；以及
控制芯片，用于实现所述电机单元转速调节的统筹控制，设置于所述牙刷体内，与所述电机单元相连接；
第一调节按键，用于以一幅度按次增加所述电机单元的转速，设置于所述牙刷体上，分别与所述控制芯片的复位端以及第一输入端相连接；
第二调节按键，用于以所述幅度按次降低所述电机单元的转速，设置于所述牙刷体上，分别与所述控制芯片的复位端以及第二输入端相连接；
状态控制按键，用于更新所述电机单元的转速调节状态，设置于所述牙刷体上，分别与所述控制芯片的复位端以及第三输入端相连接。
本发明实施例中提供的一个或多个技术方案，至少具有如下有益效果：通过第一调节按键和第二调节按键来实现电机单元的转速变化，即每按一次相应的按键，则转速会以一幅度进行变化，因此，用户调节起来非常简洁方便，也能够实时知道目前的转速变化程度，当调节完毕时，用户可以通过状态控制按键更新转速调节状态，即可以确定此时转速为自己所需要时，可以进行更新锁定，则牙刷体会以该转速进行工作，从而满足用户使用需求；并且，设计了控制芯片，能够实现对于上述各按键的统筹控制，保证用户调节的精准度。因此，本发明设计合理，调节方便，能够提高用户的刷牙体验，取得更为优异的牙齿保护效果。
进一步地，所述状态控制按键包括用于控制所述控制芯片运行或停止的开关按键以及用于确定所述电机单元转速的执行按键，所述开关按键连接到所述控制芯片的复位端，所述执行按键分别连接到所述控制芯片的复位端和第三输入端。
进一步地，所述电机单元包括电机驱动芯片以及驱动电机，所述控制芯片通过所述电机驱动芯片连接到所述驱动电机。
进一步地，所述电机驱动芯片采用DRV8850芯片。
进一步地，所述牙刷体上设置有用于实时显示所述驱动电机转速的显示屏，所述显示屏连接到所述控制芯片的数据输出端。
进一步地，所述牙刷体内还设置有与所述开关按键所匹配的开关驱动电路，所述开关驱动电路包括第一电阻、第二电阻、第三电阻、第四电阻、第五电阻、第六电阻、第七电阻、第一电容、第二电容、PNP三极管和NPN三极管；
所述开关按键的一端连接到所述控制芯片的复位端，且还分别通过所述第一电阻连接到外部电源以及通过所述第一电容连接到参考地，所述开关按键的另一端通过所述第六电阻连接到所述NPN三极管的基极且通过所述第五电阻连接到所述PNP三极管的集电极；
所述第二电阻设置于所述PNP三极管的基极与发射极之间，所述第四电阻设置于所述PNP三极管的基极与所述NPN三极管的集电极之间，所述第二电阻与所述第四电阻串联形成第一支路，所述第三电阻与所述第一支路相并联；
所述NPN三极管的发射极分别连接到参考地、所述第七电阻一端和所述第二电容一端，所述第七电阻另一端分别连接到所述第六电阻和所述NPN三极管的基极，所述第二电容另一端分别连接到所述第五电阻、所述第六电阻以及所述控制芯片的复位端。
进一步地，所述幅度为500至700r/min。
进一步地，所述第一调节按键和所述第二调节按键的可调节次数均为4次。
进一步地，所述控制芯片采用STC89C52RC芯片。
本发明的附加方面和优点将在下面的描述中部分给出，部分将从下面的描述中变得明显，或通过本发明的实践了解到。
附图说明
下面结合附图给出本发明较佳实施例，以详细说明本发明的实施方案。
图1是本发明实施例一种便于自主调节转速的智能电动牙刷的结构原理示意框图；
图2是本发明实施例一种便于自主调节转速的智能电动牙刷的电路原理图。
具体实施方式
本部分将详细描述本发明的具体实施例，本发明之较佳实施例在附图中示出，附图的作用在于用图形补充说明书文字部分的描述，使人能够直观地、形象地理解本发明的每个技术特征和整体技术方案，但其不能理解为对本发明保护范围的限制。
在本发明的描述中，需要理解的是，涉及到方位描述，例如上、下、前、后、左、右等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。
在本发明的描述中，如果有描述到第一、第二只是用于区分技术特征为目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量或者隐含指明所指示的技术特征的先后关系。
本发明的描述中，除非另有明确的限定，设置、连接等词语应做广义理解，所属技术领域技术人员可以结合技术方案的具体内容合理确定上述词语在本发明中的具体含义。
下面结合附图，对本发明实施例作进一步阐述。
参照图1和图2，本发明实施例提供了一种便于自主调节转速的智能电动牙刷，包括：
牙刷体200，内置有电机单元300；以及
控制芯片U1，用于实现电机单元300转速调节的统筹控制，设置于牙刷体200内，与电机单元300相连接；
第一调节按键K4，用于以一幅度按次增加电机单元300的转速，设置于牙刷体200上，分别与控制芯片U1的复位端以及第一输入端相连接；
第二调节按键K3，用于以幅度按次降低电机单元300的转速，设置于牙刷体200上，分别与控制芯片U1的复位端以及第二输入端相连接；
状态控制按键100，用于更新电机单元300的转速调节状态，设置于牙刷体200上，分别与控制芯片U1的复位端以及第三输入端相连接。
具体地，通过第一调节按键K4和第二调节按键K3来实现电机单 元300的转速变化，即每按一次相应的按键，则转速会以一幅度进行变化，因此，用户调节起来非常简洁方便，也能够实时知道目前的转速变化程度，当调节完毕时，用户可以通过状态控制按键100更新转速调节状态，即可以确定此时转速为自己所需要时，可以进行更新锁定，则牙刷体200会以该转速进行工作，从而满足用户使用需求；并且，设计了控制芯片U1，能够实现对于上述各按键的统筹控制，保证用户调节的精准度。
其中，第一调节按键K4和第二调节按键K3仅提供转速变化调节，主要是依靠控制芯片U1的脉冲宽度调制(即PWM)来实现的，通过调制PWM周期占空比来改变输出电压，从而改变电机单元300的转速，这种控制方式是本领域现有的，不作赘述；在本实施例中，具体的初始转速可以自行设定，按照发明人经验，一般可设置在5000至6000r/min，优选地，幅度为500至700r/min，这样调节较为符合人体刷牙健康习惯，这是发明人所总结出来的，并且，第一调节按键K4和第二调节按键K3的可调节次数均设置为4次，可以较好地匹配目前人体的刷牙转速需求，这也是发明人研究总结出来的；优选地，控制芯片U1采用STC89C52RC芯片，STC系列芯片具有良好的驱动响应能力，能够完美适配PWM调节驱动，性能优异。
更进一步地，状态控制按键100包括用于控制控制芯片U1运行或停止的开关按键K1以及用于确定电机单元300转速的执行按键K2，开关按键K1连接到控制芯片U1的复位端，执行按键K2分别连接到控制芯片U1的复位端和第三输入端。
具体地，开关按键K1可以方便用户选择是否开启控制芯片U1进行工作，可以随时调节，具有省电、简洁效果；执行案件可向控制芯片U1发送用户最终的调节结果，从而能够实现转速的确认转递，这是很有必要的，可防止用户因错按、误按第一调节按键K4或第二调节按键K3而带来的不良后果，即能够保证用户更加方便地进行调节。
更进一步地，参照图1和图2，电机单元300包括两部分，分别是电机驱动芯片U2以及驱动电机B1，控制芯片U1通过电机驱动芯片U2连接到驱动电机B1。具体地，通过电机驱动芯片U2实现驱动电机B1的稳定驱动，具有更加稳定可靠的驱动效果，保证了驱动电机B1的驱动稳定性，优选地，电机驱动芯片U2采用DRV8850芯片，其性能稳定，便于获取，适合于产业使用。
更进一步地，参照图2，发明人还设计了与开关按键K1所匹配的开关驱动电路400，实现开关按键K1与控制芯片U1之间的良好通信，开关驱动电路400设置于牙刷体200内，包括第一电阻R21、第二电阻R15、第三电阻R16、第四电阻R17、第五电阻R18、第六电阻R19、第七电阻R20、第一电容C9、第二电容C8、PNP三极管Q3和NPN三极管Q2；开关按键K1的一端连接到控制芯片U1的复位端，且还分别通过第一电阻R21连接到外部电源以及通过第一电容C9连接到参考地，开关按键K1的另一端通过第六电阻R19连接到NPN三极管Q2的基极且通过第五电阻R18连接到PNP三极管Q3的集电极；第二电阻R15设置于PNP三极管Q3的基极与发射极之间，第四电阻R17设置于PNP三极管Q3的基极与NPN三极管Q2的集电极之间，第二电 阻R15与第四电阻R17串联形成第一支路，第三电阻R16与第一支路相并联；NPN三极管Q2的发射极分别连接到参考地、第七电阻R20一端和第二电容C8一端，第七电阻R20另一端分别连接到第六电阻R19和NPN三极管Q2的基极，第二电容C8另一端分别连接到第五电阻R18、第六电阻R19以及控制芯片U1的复位端。
具体地，NPN三极管Q2和PNP三极管Q3都工作在饱和区状态，其中，NPN三极管Q2的基极通过高电平导通，低电平截止，而PNP三极管Q3的与之相反，由于控制芯片U1输出的高、低电平信号的电流相对较小，因此有时其驱动外设的能力不稳定，故增加以NPN三极管Q2和PNP三极管Q3级联为主的开关驱动电路400，能够增加控制芯片U1的驱动能力。在电路中，第一电阻R21和第一电容C9配合起到输出滤波作用，第二电阻R15、第三电阻R16和第四电阻R17作为PNP三极管Q3的输出负载，能够起到稳压承载作用，第五电阻R18、第六电阻R19和第七电阻R20能够为NPN三极管Q2提供稳定驱动力，第二电容C8起到二次滤波作用。
更进一步地，牙刷体200上设置有用于实时显示驱动电机B1转速的显示屏U3，显示屏U3连接到控制芯片U1的数据输出端。具体地，该设置方便用户实时了解驱动电机B1的转速情况，更加清晰明了，能够为用户提供刷牙参照，优选地，其采用OLED显示屏U3。
以上内容对本发明的较佳实施例和基本原理作了详细论述，但本发明并不局限于上述实施方式，熟悉本领域的技术人员应该了解在不违背本发明精神的前提下还会有各种等同变形和替换，这些等同变形 和替换都落入要求保护的本发明范围内。

Claims (9)

  1. 一种便于自主调节转速的智能电动牙刷，其特征在于，包括：
    牙刷体，内置有电机单元；以及
    控制芯片，用于实现所述电机单元转速调节的统筹控制，设置于所述牙刷体内，与所述电机单元相连接；
    第一调节按键，用于以一幅度按次增加所述电机单元的转速，设置于所述牙刷体上，分别与所述控制芯片的复位端以及第一输入端相连接；
    第二调节按键，用于以所述幅度按次降低所述电机单元的转速，设置于所述牙刷体上，分别与所述控制芯片的复位端以及第二输入端相连接；
    状态控制按键，用于更新所述电机单元的转速调节状态，设置于所述牙刷体上，分别与所述控制芯片的复位端以及第三输入端相连接。
  2. 根据权利要求1所述的一种便于自主调节转速的智能电动牙刷，其特征在于：所述状态控制按键包括用于控制所述控制芯片运行或停止的开关按键以及用于确定所述电机单元转速的执行按键，所述开关按键连接到所述控制芯片的复位端，所述执行按键分别连接到所述控制芯片的复位端和第三输入端。
  3. 根据权利要求1所述的一种便于自主调节转速的智能电动牙刷，其特征在于：所述电机单元包括电机驱动芯片以及驱动电机，所述控制芯片通过所述电机驱动芯片连接到所述驱动电机。
  4. 根据权利要求3所述的一种便于自主调节转速的智能电动牙刷，其 特征在于：所述电机驱动芯片采用DRV8850芯片。
  5. 根据权利要求3所述的一种便于自主调节转速的智能电动牙刷，其特征在于：所述牙刷体上设置有用于实时显示所述驱动电机转速的显示屏，所述显示屏连接到所述控制芯片的数据输出端。
  6. 根据权利要求2所述的一种便于自主调节转速的智能电动牙刷，其特征在于：
    所述牙刷体内还设置有与所述开关按键所匹配的开关驱动电路，所述开关驱动电路包括第一电阻、第二电阻、第三电阻、第四电阻、第五电阻、第六电阻、第七电阻、第一电容、第二电容、PNP三极管和NPN三极管；
    所述开关按键的一端连接到所述控制芯片的复位端，且还分别通过所述第一电阻连接到外部电源以及通过所述第一电容连接到参考地，所述开关按键的另一端通过所述第六电阻连接到所述NPN三极管的基极且通过所述第五电阻连接到所述PNP三极管的集电极；
    所述第二电阻设置于所述PNP三极管的基极与发射极之间，所述第四电阻设置于所述PNP三极管的基极与所述NPN三极管的集电极之间，所述第二电阻与所述第四电阻串联形成第一支路，所述第三电阻与所述第一支路相并联；
    所述NPN三极管的发射极分别连接到参考地、所述第七电阻一端和所述第二电容一端，所述第七电阻另一端分别连接到所述第六电阻和所述NPN三极管的基极，所述第二电容另一端分别连接到所述第五电阻、所述第六电阻以及所述控制芯片的复位端。
  7. 根据权利要求1所述的一种便于自主调节转速的智能电动牙刷，其特征在于：所述幅度为500至700r/min。
  8. 根据权利要求7所述的一种便于自主调节转速的智能电动牙刷，其特征在于：所述第一调节按键和所述第二调节按键的可调节次数均为4次。
  9. 根据权利要求1至8任一所述的一种便于自主调节转速的智能电动牙刷，其特征在于：所述控制芯片采用STC89C52RC芯片。
PCT/CN2020/104555 2019-11-28 2020-07-24 一种便于自主调节转速的智能电动牙刷 WO2021103611A1 (zh)

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