WO2017140179A1 - 用于生物体体表清洁的电动清洁毛刷 - Google Patents

用于生物体体表清洁的电动清洁毛刷 Download PDF

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Publication number
WO2017140179A1
WO2017140179A1 PCT/CN2016/112181 CN2016112181W WO2017140179A1 WO 2017140179 A1 WO2017140179 A1 WO 2017140179A1 CN 2016112181 W CN2016112181 W CN 2016112181W WO 2017140179 A1 WO2017140179 A1 WO 2017140179A1
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WIPO (PCT)
Prior art keywords
permanent magnet
leg
swing
arm
swing arm
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PCT/CN2016/112181
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English (en)
French (fr)
Inventor
胡建坤
胡建长
胡斐然
胡斐凡
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胡建坤
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Application filed by 胡建坤 filed Critical 胡建坤
Publication of WO2017140179A1 publication Critical patent/WO2017140179A1/zh

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Classifications

    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B13/00—Brushes with driven brush bodies or carriers
    • A46B13/02—Brushes with driven brush bodies or carriers power-driven carriers
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K33/00—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system
    • H02K33/02—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with armatures moved one way by energisation of a single coil system and returned by mechanical force, e.g. by springs
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K33/00—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system
    • H02K33/12—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with armatures moving in alternate directions by alternate energisation of two coil systems
    • H02K33/14—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with armatures moving in alternate directions by alternate energisation of two coil systems wherein the alternate energisation and de-energisation of the two coil systems are effected or controlled by movement of the armatures
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K33/00—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system
    • H02K33/16—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with polarised armatures moving in alternate directions by reversal or energisation of a single coil system

Definitions

  • the present invention relates to a cleaning tool, and more particularly to a tool for cleaning a body surface of a living being, including humans and animals, driven by a motor.
  • a motor is an electromagnetic device that converts electric energy according to the law of electromagnetic induction. It is widely used in various fields and is an indispensable prime mover in today's society. It provides a power source for a large number of electrical appliances or various machines. .
  • the electric sonic cleansing brush is a motor driven device.
  • the electric sonic cleansing brush uses a swaying motor.
  • the oscillating motor includes an E-type magnetic core, a permanent magnet (one or two), and a swing arm composed of pure iron and connected to the permanent magnet and a spring piece connected to the swing arm, and the coil is wound on the E-shaped core.
  • the swing arm swinging around the E-type magnetic yoke, such as the patent number 103784062 (a kind of sonic wash brush).
  • the magnetic flux of the middle bracket of the E-type magnetic core is large, and the magnetic flux of the magnetic poles of the two ends of the bracket is small, and the two ends of the bracket have only a single suction force or a short repulsion between the working rafts, and the intermediate bracket only In a short time, there is suction and repulsive force in the same time. Others have suction only, and are larger than the suction or repulsive force of the brackets at both ends.
  • the spring piece is resonated. Therefore, only the fixed frequency can make the spring piece resonate, but when the battery is powered by the charging battery, there is still a problem of small torque, and only a gentle face cleaning can be performed.
  • a novel electric cleaning brush for cleaning a body surface is provided.
  • the electric cleaning brush includes a swing motor and a brush driven by a swing motor, and the swing motor includes
  • a U-shaped yoke the U-shaped yoke has a first leg and a second leg, and the first leg and the second leg are respectively wound with a coil;
  • a control circuit the control circuit is electrically connected to the coil, and generates an alternating pulse, so that an end face of the two legs of the U-shaped yoke generates an alternating magnetic pole;
  • a swing arm swingable about a fulcrum, the swing arm extending outward from an end surface of the U-shaped yoke and bounded by a fulcrum, and an end of the swing arm near the U-shaped yoke is an inner arm, the pendulum One end of the arm away from the U-shaped yoke is an outer arm;
  • a second yoke the second yoke being mounted at an end of the inner arm adjacent to the U-shaped yoke;
  • the permanent magnets are fixedly mounted on the second yoke; the four permanent magnets are sequentially distributed on the same circumference centered on the fulcrum, and are first permanent magnets in the order of arrangement a second permanent magnet, a third permanent magnet, and a fourth permanent magnet; the radial ends of the first permanent magnet and the fourth permanent magnet have the same polarity, and the radial directions of the second permanent magnet and the third permanent magnet
  • the polarity of the end faces is the same;
  • the radial end faces of the first permanent magnets and the radial end faces of the second permanent magnets are opposite in polarity and are disposed corresponding to the end faces of the first legs;
  • the radial end faces of the third permanent magnets The radial end faces of the four permanent magnets are opposite in polarity and are disposed corresponding to the end faces of the second legs, and the end faces of the permanent magnets and the end faces of the corresponding legs have air gaps;
  • the brush is connected to the swing arm, and the swing arm drives the brush to swing back and forth.
  • a gap between the first permanent magnet and the second permanent magnet is smaller than a width of the end surface of the first leg, and the third permanent magnet and the fourth permanent magnet The gap between them is smaller than the width of the end surface of the second leg.
  • the end faces of the first leg and the second leg have arc faces that match the circumference of the permanent magnet swinging jaw.
  • the radial end face width of the permanent magnet is smaller than the end face width of the U-shaped yoke leg.
  • an elastic body for absorbing the moment of inertia of the swing arm in the position of the swing arm is disposed on both sides of the swing arm, and the elastic characteristic of the elastic body is two More than one curve.
  • the elastic body is a sphere, an elliptical sphere, a cylinder
  • the outer arm and/or the inner arm are provided with a swinging rod for force output, the swinging rod is perpendicular to the swinging plane of the swing arm, the hair The brush is fixed to the swing bar.
  • the electric cleaning brush further comprising a resonant elastic member, the resonant elasticity One end of the piece is fixed to the fulcrum of the swing arm, and the other end is connected to the outer arm or the inner arm.
  • the radial faces of the first permanent magnet and the fourth permanent magnet of the four permanent magnets have the same polarity, and the radial end faces of the second permanent magnet and the third permanent magnet The same is true, and the second permanent magnet has the opposite polarity to the radial end face of the first permanent magnet.
  • the control circuit generates an alternating pulse with adjustable pulse width, so that the moving direction of the permanent magnet alternates, thereby forming a reciprocating swing, so that the swing arm drives the brush to reciprocate and swing to complete the living body
  • Each leg of the U-shaped yoke corresponds to two permanent magnets.
  • the design of the permanent magnet redundancy is a magnetic circuit design different from the prior art, and the torque of the existing motor is larger than that of the same power, and the magnetic flux is large. The drive power is correspondingly reduced.
  • FIG. 1 is a schematic structural view of an embodiment of an electric cleaning brush for cleaning a living body surface of the present application
  • FIG. 2 is a schematic view showing the cooperation of a permanent magnet and a U-shaped yoke leg in the swing motor shown in FIG. 1;
  • FIG. 3 is a schematic view of the embodiment shown in FIG. 1 in an energized state
  • FIG. 4 is a schematic view of the embodiment shown in FIG. 1 in an energized state opposite to FIG. 3; [0029] FIG.
  • FIG. 5 is a first schematic view showing the radial end faces of four permanent magnets in the embodiment shown in FIG. 1;
  • FIG. 6 is a second schematic view showing the radial end faces of four permanent magnets in the embodiment shown in FIG.
  • FIG. 7 is a third schematic view showing the radial end faces of four permanent magnets in the embodiment shown in FIG. 1;
  • FIG. 8 is a schematic structural view showing the addition of a brush on the basis of the embodiment shown in FIG. 1;
  • FIG. 9 is a schematic structural view of the side of the embodiment shown in FIG. 5;
  • FIG. 10 is a schematic structural view of a second embodiment of a swing motor of the present application.
  • FIG. 11 is a schematic view showing another shape of the resonant elastic member in the embodiment shown in FIG. 10.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • the first embodiment provides an electric cleaning brush for cleaning a body surface.
  • the living body referred to herein includes a human body and an animal, and the following description will be made on the human body.
  • the electric sonic cleaning brush comprises a swing motor and a brush, and the swing motor can output a reciprocating swing The brush is swung by a swing motor.
  • the swing motor includes:
  • U-shaped yoke 100 U-shaped yoke 100 has a first leg 110 and a second leg 120, the first leg 110 and the second leg 120 are wound with a coil 200;
  • control circuit 300 the control circuit 300 is electrically connected to the coil 200, and generates an alternating pulse to make the U-shaped yoke 10
  • the end faces 111, 121 of the two legs of 0 generate alternating magnetic poles
  • the swing arm 400 swingable around the fulcrum, the swing arm 400 extends outward from the end faces 111, 121 of the U-shaped yoke 100, and is bounded by a fulcrum, and the end of the swing arm 400 near the U-shaped yoke 100 is an inner arm 420, the swing arm 400 is away from the U-shaped yoke 1
  • One end of 00 is an outer arm 430;
  • the second yoke 500 (which is referred to as the second yoke 500 in order to distinguish it from the U-shaped yoke 100) is mounted on the end of the inner arm 420 near the U-shaped yoke 100. ;
  • the permanent magnets are fixedly mounted on the second yoke 500 (eg, glued).
  • the four permanent magnets are sequentially distributed on the same circumference centered on the fulcrum, and are, in order of arrangement, the first permanent magnet 610, the second permanent magnet 620, the third permanent magnet 630, and the fourth permanent magnet 640.
  • the polarities of the radial end faces 611, 641 of the first permanent magnet 610 and the fourth permanent magnet 640 are the same, the polarities of the radial end faces 621, 631 of the second permanent magnet 620 and the third permanent magnet 630 are the same, and the first permanent
  • the radial end surface 611 of the magnet 610 and the radial end surface 621 of the second permanent magnet 620 are opposite in polarity and are disposed corresponding to the end surface 111 of the first leg 110, and the radial end surface 631 of the third permanent magnet 630 and the radial direction of the fourth permanent magnet 640
  • the end faces 641 have opposite polarities and are disposed corresponding to the end faces 121 of the second legs 110, and the end faces of the four permanent magnets and the end faces of their corresponding legs have an air gap.
  • the four permanent magnets are sequentially distributed on the same circumference centered on the fulcrum means that the radii of the four permanent magnets to the fulcrum are substantially equal, that is, radially distributed along the center line of the swing.
  • the U-shaped yoke 100, the swing arm 400, the second yoke 500 and the permanent magnet are mounted in the housing 700, wherein the pivot point of the swing arm 400 is a swinging shaft 410, and the swinging shaft 410 is fixedly mounted on the housing. On the 700, the swing arm 400 is fitted over the swing shaft 410.
  • the housing 700 referred to herein may be a housing dedicated to the motor, or may be a housing of an electric cleaning brush using the motor.
  • the four permanent magnets When the coil 200 is energized, the four permanent magnets will generate torque in the same direction of rotation. If the first and third permanent magnets 610, 630 generate the same magnitude of magnetic attraction to the U-shaped yoke 100 after energization, the second and fourth permanent magnets 620, 640 produce the same magnitude of magnetic repulsive force for the U-shaped yoke 100. Reverse power, first and third The permanent magnets 610, 630 generate magnetic repulsive forces of the same magnitude for the U-shaped yoke 100, and the second and fourth permanent magnets 620, 640 produce magnetic attraction of the same magnitude for the U-shaped yoke 100. Each leg of the U-shaped yoke corresponds to two permanent magnets.
  • the design of the permanent magnet redundancy is a magnetic circuit design different from the prior art, so that the swing motor has a larger torque than the existing motor of the same power. The larger the flux, the larger the drive power will be.
  • the four permanent magnets are simultaneously subjected to the force of the U-shaped yoke 100 in the same swinging direction, which can ensure that the swing arm 400 realizes the entire reciprocating swing process without external force.
  • the end faces of the first permanent magnet 610 and the fourth permanent magnet 640 are N poles
  • the end faces of the second permanent magnet 620 and the third permanent magnet 630 are S. pole.
  • the coil 200 is energized, such that the end surface of the first leg 110 is N pole and the end surface of the second leg 120 is S pole
  • the N pole of the first leg 110 will generate suction to the S pole of the second permanent magnet 620
  • the N pole of the first permanent magnet 610 generates a repulsive force.
  • the S pole of the second leg 120 will generate a suction force to the N pole of the fourth permanent magnet 640 and a repulsive force to the S pole of the third permanent magnet 630, thereby swinging the swing arm 400 from the position shown in FIG. In the position shown in Figure 3, the first swing is formed, but at a higher frequency, the swing arm does not have to be placed in position.
  • the end surface of the first leg 110 is an S pole
  • the end surface of the second leg 120 is an N pole
  • the S pole of the first leg 110 is opposite.
  • the S pole of the two permanent magnets 620 generates a repulsive force, and generates a suction force to the N pole of the first permanent magnet 610.
  • the N pole of the second leg 120 will generate a repulsive force to the N pole of the fourth permanent magnet 640, and generate a suction force to the S pole of the third permanent magnet 630, thereby swinging the swing arm 400 from the position shown in FIG. In the position shown in Figure 4, a second swing is formed, but at a higher frequency, the swing arm does not have to be placed in position.
  • the coil 200 is connected to the control circuit 300, and the control circuit 300 generates an alternating pulse with adjustable pulse width, so that the end face of the U-shaped yoke 100 generates alternating magnetic poles, so that the permanent magnet generates suction torque and repulsive force.
  • the moment, or the repulsive torque and the suction torque drive the swing arm 400 to swing, thereby driving the corresponding mechanical unit to be swung by the swing arm 400.
  • the gap between the first permanent magnet 610 and the second permanent magnet 620 may be smaller than the width of the end surface 111 of the first leg 110, and the third permanent magnet 630 and the fourth permanent magnet 640 The gap between them is smaller than the width of the end surface 121 of the second leg 120 to ensure that the legs of the U-shaped yoke 100 have sufficient force for each permanent magnet.
  • each permanent magnet may be the same as or different from the width of the end surface of the leg of the U-shaped yoke 100, for example.
  • the width of each permanent magnet is smaller than the width of the end surface of the legs of the U-shaped yoke 100.
  • the width referred to herein refers to the width in the direction indicated by the arrow in Fig. 2.
  • the end faces 111, 121 of the first leg 110 and the second leg 120 may have a circular arc surface matching the circumference of the permanent magnet swinging ridge, that is, the first leg 110 There is only an air gap spacing between the arcuate surface formed by the end faces 111, 121 of the second leg 120 and the circumferential arcuate surface formed by the wobble of the permanent magnet.
  • the radial end faces of the four permanent magnets are arranged as shown in FIG. 5, and are substantially rectangular.
  • the radial end faces of the permanent magnets may be disposed in other shapes. As shown in FIG.
  • the radial end faces of the first permanent magnet 610a and the second permanent magnet 620a are disposed such that the adjacent sides are inclined and parallel to each other
  • the third The radial end faces of the permanent magnet 630a and the fourth permanent magnet 640a are disposed such that the adjacent sides are inclined and parallel to each other, that is, the second permanent magnet 620a and the fourth permanent magnet 640a are substantially right-angled trapezoids disposed in the same direction, and the first permanent magnet 610a
  • the third permanent magnet 630a is also a right-angled trapezoid of the same shape, but the direction is opposite to the second permanent magnet 620a and the fourth permanent magnet 640a; or, as shown in FIG. 7, the radial end faces of the four permanent magnets are both set to They are inclined and parallel to each other, and are each substantially parallelogram.
  • the permanent magnets are staggered to improve the output torque curve and make the output torque smooth.
  • the outer arm 430 is provided with a swing rod 440 for force output, and the swing rod 440 is vertical.
  • the brush 910 is fixed to the swing lever 440.
  • the brush 910 includes a base 911 and bristles 912.
  • the base 911 and the bristles 912 are oscillated by the swing arm 400 to clean the skin.
  • the outer arm 430 of the swing arm 400 is an output arm, and the outer force arm is smaller than the inner force arm.
  • the internal force arm distance is the distance from the radial end surface of the permanent magnet to the center of the swing shaft 410, and the external force arm distance is the center of the swing shaft 410 to the outer arm 430.
  • the distance of the pendulum 44 0 center.
  • the ratio of the length of the inner arm 420 to the outer arm 430 can also be designed according to the demand for the amplitude of the swing.
  • the swing lever 440 may be disposed on the inner arm 420, or the inner arm 420 and the outer arm 430 may be disposed.
  • the swing bar 440 is shown in Figures 8 and 9.
  • the outer arm 430 of the swing arm 400 has a swing rod 440 for driving a brush 910 to swing, or the outer arm 430 and the inner arm 420 of the swing arm 400 each have a swing rod 440 to drive the two brushes 910 to swing. .
  • the first and second permanent magnets 610, 620 and the first leg 110 form a closed magnetic path through the air gap, and the third and fourth permanent magnets 630 and 640. Magnetic flux leakage can be avoided by forming a closed magnetic circuit with the second leg 120 through the air gap. Further, the permanent magnet and the second yoke 500 are mounted on the swing arm 400.
  • the other parts of the swing arm 400 do not affect the magnetic field.
  • a rechargeable battery 310 and a charging module 320 may be further included.
  • the rechargeable battery 310 is used for power supply, and the charging module 320 is connected to the control circuit for charging the rechargeable battery 310.
  • the control circuit may further include a state indicating module 330 for indicating an operating state of the motor, and a state indicating module 330 for controlling a circuit to control the shut-off motor.
  • control circuit 300 can determine the number of mechanical oscillations by counting the energization pulses of the coil, and the output signal gives a corresponding indication to the operating condition of the mechanical unit.
  • the swing arm of the swing motor swings around a fulcrum, and the life of the fulcrum and the swing arm is the life of the motor
  • the swing arm is mounted on the swing shaft through a bearing, and the life of the bearing is the life of the motor, so the life of the motor is extremely long, which is incomparable with the existing brushed DC motor.
  • the swing arm can be directly attached to the swing shaft, and the life of the socket structure is the life of the motor.
  • the swing motor has low power consumption, large torque, long service life, stable current, and can be powered by a rechargeable battery, and is suitable for portability design. It also makes the electric cleaning brush with sufficient torque and suitable swing to not only meet the face brush application, but also to meet the bath brush application, and can also be used for other cleaning applications.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1
  • the second embodiment provides another swing motor.
  • the oscillating motor is modified in the structure shown in Embodiment 1, and a resonant elastic member for generating resonance at a constant oscillating frequency is added.
  • the resonant elastic member is fixed at one end of the swing arm and the other end is connected to the outer arm or the inner arm.
  • the resonant elastic member shown in FIG. 10 is a linear spring steel wire. Further, other shapes of elastic members may be used instead, and the central portion of the resonant elastic member is curved as shown in FIG.
  • the present invention has been described with reference to the specific examples, which are merely used to help the understanding of the invention and are not intended to limit the invention. Variations to the above-described embodiments may be made by those skilled in the art in light of the concept of the invention.

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  • Power Engineering (AREA)
  • Brushes (AREA)
  • Cleaning In General (AREA)

Abstract

一种用于生物体体表清洁的电动清洁毛刷，包括摆动电机和由摆动电机带动的毛刷。摆动电机包括U型磁轭（100）、四个永磁体和摆臂（400）。U型磁轭（100）的两个支脚上分别缠绕有线圈（200），在控制电路（300）下可使两个支脚的端面产生交变磁极。四个永磁体分别为第一永磁体（610）、第二永磁体（620）、第三永磁体（630）和第四永磁体（640），依次分布在以支点为圆心的同一圆周上。第一永磁体（610）和第四永磁体（640）的径向端面极性相同，第二永磁体（620）和第三永磁体（630）的径向端面极性相同，第二永磁体（620）与第一永磁体（610）径向端面极性相反。控制电路（300）产生脉宽可调的交变脉冲，使永磁体形成往复摆动，从而由摆臂（400）带动毛刷往复高速小幅摆动，完成对生物体体表的清理。

Description

发明名称:用于生物体体表清洁的电动清洁毛刷 技术领域
[0001] 本发明涉及一种清洁工具， 尤其是一种由电机驱动对生物体 （包括人和动物） 体表进行清理的工具。
[0002]
[0003] 背景技术
[0004] 电机是一种依据电磁感应定律实现电能的转换的一种电磁装置， 其被广泛应用 于各个领域内， 是当今社会不可或缺的原动机， 为大量电器或各种机械提供动 力源。
[0005] 电动声波洁肤毛刷即是采用电机驱动的设备。 电动声波洁肤毛刷用的是摆动电 机。 摆动电机则包括 E型铁芯磁扼、 永磁体 （一块或两块） 以及由纯铁组成并与 永磁体相连的摆臂和与摆臂相连的弹簧片， 在 E型铁芯磁扼上线圈的作用下， 摆 臂在 E型磁扼左右摆动， 如公幵号为 103784062 (—种声波洗脸刷） 的专利。 摆 动电机中， E型铁芯磁扼的中间支架磁扼磁通大， 两端支架磁扼的磁通小， 两端 支架在工作吋只有单一的吸力或很短吋间的斥力， 中间支架只在很短吋间内同 吋有吸力和斥力， 其它吋间只有吸力， 且大于两端支架的吸力或斥力。 要保证 足够的力矩， 就要使弹簧片共振。 故只能固定频率使弹簧片共振， 但用充电电 池供电吋， 还是有力矩小的问题， 只能做轻柔的脸部清洗。
[0006]
[0007] 发明内容
[0008] 根据第一方面， 一种实施例中提供一种新型的用于生物体体表清洁的电动清洁 毛刷。
[0009] 该电动清洁毛刷， 包括摆动电机和由摆动电机带动的毛刷， 所述摆动电机包括
[0010] U型磁轭， 所述 U型磁轭具有第一支脚和第二支脚， 所述第一支脚和第二支脚 上分别缠绕有线圈； [0011] 控制电路， 所述控制电路与线圈电连接， 并产生交变脉冲， 使 U型磁轭的两个 支脚的端面产生交变磁极；
[0012] 可绕支点摆动的摆臂， 所述摆臂自 U型磁轭的端面向外延伸， 且以支点为界， 所述摆臂靠近 U型磁轭的一端为内臂， 所述摆臂远离 U型磁轭的一端为外臂；
[0013] 第二磁轭， 所述第二磁轭安装在内臂靠近 U型磁轭的一端；
[0014] 以及四个永磁体， 所述永磁体固定安装在第二磁轭上； 所述四个永磁体依次分 布在以支点为圆心的同一圆周上， 且按照排列顺序依次为第一永磁体、 第二永 磁体、 第三永磁体和第四永磁体； 所述第一永磁体和第四永磁体的径向端面的 极性相同， 所述第二永磁体和第三永磁体的径向端面的极性相同； 则所述第一 永磁体的径向端面和第二永磁体径向端面的极性相反且对应第一支脚的端面设 置； 所述第三永磁体的径向端面和第四永磁体径向端面的极性相反且对应第二 支脚的端面设置， 所述永磁体的端面和其对应支脚的端面具有气隙；
[0015] 所述毛刷与摆臂连接， 由所述摆臂带动毛刷往复摆动。
[0016] 作为所述电动清洁毛刷的进一步可选方案， 所述第一永磁体与第二永磁体之间 的间隙小于第一支脚端面的宽度， 所述第三永磁体与第四永磁体之间的间隙小 于第二支脚端面的宽度。
[0017] 作为所述电动清洁毛刷的进一步可选方案， 所述第一支脚和第二支脚的端面具 有匹配永磁体摆动吋所对应圆周的圆弧面。
[0018] 作为所述电动清洁毛刷的进一步可选方案， 所述永磁体的径向端面宽度小于 U 型磁轭支脚的端面宽度。
[0019] 作为所述电动清洁毛刷的进一步可选方案， 在所述摆臂的两侧设置有用于吸收 摆臂在摆动到位吋的转动惯量的弹性体， 所述弹性体的弹性特征为二次以上的 曲线。
[0020] 作为所述电动清洁毛刷的进一步可选方案， 所述弹性体为圆球、 椭圆球、 圆柱
、 椭圆柱或半圆形的硅胶件或橡胶件。
[0021] 作为所述电动清洁毛刷的进一步可选方案， 所述外臂和 /或内臂上设置有用于 力输出的摆杆， 所述摆杆垂直于摆臂的摆动平面， 所述毛刷固定在摆杆上。
[0022] 作为所述电动清洁毛刷的进一步可选方案， 还包括共振弹性件， 所述共振弹性 件一端固定在摆臂的支点上， 另一端连接在外臂或内臂上。
[0023] 依据上述实施例的电动清洁毛刷， 该四个永磁体中第一永磁体和第四永磁体的 径向端面极性相同， 第二永磁体和第三永磁体的径向端面极性相同， 同吋第二 永磁体与第一永磁体径向端面的极性相反。 当线圈通电， 四个永磁体都会产生 相同旋转方向的转矩。 控制电路产生脉宽可调的交变脉冲， 使永磁体运动方向 交替变化， 进而形成往复摆动， 从而由摆臂带动毛刷往复摆动， 完成对生物体
(包括人体和动物） 体表 （如皮肤） 的清理。 U型磁轭的每个支脚对应两个永磁 体， 这种永磁体冗余的设计是跟现有技术不同的磁路设计， 比同功率的现有电 机转矩更大， 作用磁通大， 驱动功率则相应的减小。
[0024]
[0025] 附图说明
[0026] 图 1为本申请用于生物体体表清洁的电动清洁毛刷一种实施例的结构示意图；
[0027] 图 2为图 1所示摆动电机中永磁体与 U型磁轭支脚的配合示意图；
[0028] 图 3为图 1所示实施例在通电状态下的示意图；
[0029] 图 4为图 1所示实施例在与图 3反向的通电状态下的示意图；
[0030] 图 5为图 1所示实施例中四个永磁体径向端面第一种展幵示意图；
[0031 ] 图 6为图 1所示实施例中四个永磁体径向端面第二种展幵示意图；
[0032] 图 7为图 1所示实施例中四个永磁体径向端面第三种展幵示意图；
[0033] 图 8为图 1所示实施例基础上增加一个毛刷的结构示意图；
[0034] 图 9为图 5所示实施例侧面的结构示意图；
[0035] 图 10为本申请摆动电机第二种实施例的结构示意图；
[0036] 图 11为图 10所示实施例中共振弹性件另一种形状示意图。
[0037]
[0038] 具体实施方式
[0039] 实施例一：
[0040] 本实施例一提供一种用于生物体体表清洁的电动清洁毛刷。
[0041] 这里所指的生物体包括人体和动物， 以下以人体为对象进行说明。
[0042] 该电动声波洁肤毛刷包括摆动电机和毛刷， 该摆动电机可输出一种往复摆动运 动， 该毛刷由摆动电机带动的进行摆动。
[0043] 请参考图 1、 2、 3、 4， 该摆动电机包括：
[0044] U型磁轭 100， U型磁轭 100具有第一支脚 110和第二支脚 120， 第一支脚 110和第 二支脚 120上分别缠绕有线圈 200;
[0045] 控制电路 300， 控制电路 300与线圈 200电连接， 并产生交变脉冲， 使 U型磁轭 10
0的两个支脚的端面 111、 121产生交变磁极；
[0046] 可绕支点摆动的摆臂 400， 摆臂 400自 U型磁轭 100的端面 111、 121向外延伸， 且 以支点为界， 摆臂 400靠近 U型磁轭 100的一端为内臂 420， 摆臂 400远离 U型磁轭 1
00的一端为外臂 430;
[0047] 第二磁轭 500 (为将之与 U型磁轭 100区别幵， 故称其为第二磁轭 500) ， 第二磁 轭 500安装在内臂 420靠近 U型磁轭 100的一端；
[0048] 以及四个永磁体， 永磁体固定安装在第二磁轭 500上 （如胶粘固定） 。 四个永 磁体依次分布在以支点为圆心的同一圆周上， 且按照排列顺序依次为第一永磁 体 610、 第二永磁体 620、 第三永磁体 630和第四永磁体 640。 第一永磁体 610和第 四永磁体 640的径向端面 611、 641的极性相同， 第二永磁体 620和第三永磁体 630 的径向端面 621、 631的极性相同， 并且第一永磁体 610的径向端面 611和第二永 磁体 620径向端面 621的极性相反且对应第一支脚 110的端面 111设置， 第三永磁 体 630的径向端面 631和第四永磁体 640径向端面 641的极性相反且对应第二支脚 1 20的端面 121设置， 四个永磁体的端面和其对应支脚的端面具有气隙。
[0049] 其中， 四个永磁体依次分布在以支点为圆心的同一圆周上是指该四个永磁体到 支点的半径大致相等， 即沿摆动中心线径向分布。
[0050] 该 U型磁轭 100、 摆臂 400、 第二磁轭 500和永磁体装在壳体 700内， 其中摆臂 400 的支点为一摆动轴 410， 该摆动轴 410固定安装在壳体 700上， 摆臂 400套装在该 摆动轴 410上。 这里所说的壳体 700可以是该电机专用的壳体， 也可以是使用该 电机的电动清洁毛刷的壳体。
[0051] 当线圈 200通电， 四个永磁体都会产生相同旋转方向的转矩。 如果通电后， 第 一和第三永磁体 610、 630对 U型磁轭 100产生大小相同的磁吸力， 则第二和第四 永磁体 620、 640对 U型磁轭 100产生大小相同的磁斥力； 反向通电， 第一和第三 永磁体 610、 630对 U型磁轭 100产生大小相同的磁斥力， 则第二和第四永磁体 620 、 640对 U型磁轭 100产生大小相同的磁吸力。 U型磁轭的每个支脚对应两个永磁 体， 这种永磁体冗余的设计是跟现有技术不同的磁路设计， 使得本摆动电机比 同功率的现有电机转矩更大， 磁通更大， 磁通大则驱动功率相应的就会减小。
[0052] 该四个永磁体同吋受到 U型磁轭 100沿同一个摆动方向的作用力， 其能够保证摆 臂 400不借助外力就实现整个往复摆动过程。
[0053] 具体说来， 请参考图 1、 2、 3， 假定第一永磁体 610和第四永磁体 640的端面为 N 极， 而第二永磁体 620和第三永磁体 630的端面为 S极。 当线圈 200通电， 如此吋 第一支脚 110的端面为 N极， 第二支脚 120的端面为 S极， 则第一支脚 110的 N极将 对第二永磁体 620的 S极产生吸力， 而对第一永磁体 610的 N极产生斥力。 同样地 ， 第二支脚 120的 S极将会对第四永磁体 640的 N极产生吸力， 而对第三永磁体 630 的 S极产生斥力， 从而使摆臂 400从图 1所示位置摆动到图 3所示位置， 形成第一 次摆动， 但在频率较高吋， 摆臂不用摆到位。
[0054] 当线圈 200内电流方向改变， 如图 4所示， 此吋第一支脚 110的端面为 S极， 第二 支脚 120的端面为 N极， 则第一支脚 110的 S极将对第二永磁体 620的 S极产生斥力 ， 而对第一永磁体 610的 N极产生吸力。 同样地， 第二支脚 120的 N极将会对第四 永磁体 640的 N极产生斥力， 而对第三永磁体 630的 S极产生吸力， 从而使摆臂 400 从图 3所示位置摆动到图 4所示位置， 形成第二次摆动， 但在频率较高吋， 摆臂 不用摆到位。
[0055] 综上， 线圈 200连接控制电路 300， 控制电路 300产生脉宽可调的交变脉冲， 使 U 型磁轭 100的端面产生交变的磁极， 使永磁体产生吸力转矩和斥力转矩， 或斥力 转矩和吸力转矩， 驱动摆臂 400摆动， 从而通过摆臂 400驱动相应的要摆动的机 械单元。
[0056] 进一步， 如图 2所示， 可使第一永磁体 610与第二永磁体 620之间的间隙小于第 一支脚 110的端面 111的宽度， 第三永磁体 630与第四永磁体 640之间的间隙小于 第二支脚 120的端面 121的宽度， 以保证 U型磁轭 100的支脚对各永磁体具有足够 的作用力。
[0057] 进而还可使每个永磁体的宽度与 U型磁轭 100支脚的端面宽度相同或者不同， 例 如每个永磁体的宽度小于 U型磁轭 100支脚的端面宽度。 这里所说的宽度是指图 2 中箭头所指方向上的宽度。
[0058] 为了减小气隙， 如图 2所示， 可使第一支脚 110和第二支脚 120的端面 111、 121 具有匹配永磁体摆动吋所对应圆周的圆弧面， 即第一支脚 110和第二支脚 120的 端面 111、 121所成圆弧面与永磁体摆动吋所形成的圆周的部分弧面仅有气隙间 距。
[0059] 其中， 请参考图 5， 四个永磁体的径向端面排列如图 5所示， 大致呈矩形。 此外 ， 永磁体的径向端面还可设置为其他形状， 如图 6所示， 将第一永磁体 610a与第 二永磁体 620a的径向端面设置为相邻一边倾斜且彼此平行， 将第三永磁体 630a与 第四永磁体 640a的径向端面设置为相邻一边倾斜且彼此平行， 即第二永磁体 620a 和第四永磁体 640a大致为同方向设置的直角梯形， 而第一永磁体 610a和第三永磁 体 630a也为相同形状的直角梯形， 但方向与第二永磁体 620a和第四永磁体 640a相 反； 或者， 如图 7所示， 将四个永磁体的径向端面均设置为倾斜且相互平行， 均 大致为平行四边形。
[0060] 以上所示永磁体排布图中， 永磁体交错分布， 可改善输出力矩曲线， 使输出力 矩变得平稳。
[0061] 每次摆动过程中， 四个永磁体实际上都受到朝相同方向摆动的作用力， 输出力 矩=输出力 X外力臂 = (F1+F2+F3+F4) x内力臂， Fl、 F2、 F3、 F4为 U型磁轭 100 分别对四个永磁体的作用力。
[0062] 进一步地， 请参考图 1， 外臂 430上设有用于力输出的摆杆 440， 该摆杆 440垂直
(包括大致呈垂直角度这种情况） 于摆臂 400的摆动平面， 该毛刷 910固定在摆 杆 440上。 如图 6所示， 毛刷 910包括底座 911和刷毛 912， 在摆臂 400的带动下底 座 911和刷毛 912—起摆动， 可对皮肤进行清洁。
[0063] 摆臂 400的外臂 430为输出臂， 外力臂小于内力臂， 内力臂距离为永磁体的径向 端面到摆动轴 410中心的距离， 外力臂距离为摆动轴 410中心到外臂 430的摆杆 44 0中心的距离。 这里还可根据对摆动幅度的需求设计内臂 420与外臂 430长度之比
[0064] 进一步， 还可将摆杆 440设置在内臂 420上， 或者内臂 420和外臂 430上均可设置 摆杆 440， 如图 8和 9所示。
[0065] 摆臂 400的外臂 430上有一个摆杆 440， 驱动一个毛刷 910摆动， 或摆臂 400的外 臂 430和内臂 420各有一个摆杆 440， 驱动两个毛刷 910摆动。
[0066] 请参考图 1， 本摆动电机在断电状态下， 第一和第二永磁体 610、 620与第一支 脚 110通过气隙形成闭合磁路， 第三和第四永磁体 630、 640与第二支脚 120通过 气隙形成闭合磁路， 可避免漏磁。 而且永磁体和第二磁轭 500安装在摆臂 400上
， 也使得摆臂 400的其它部分不会对磁场产生影响。
[0067] 此外， 请参考图 1， 还可以包括充电电池 310和充电模块 320， 所述充电电池 310 用于供电， 充电模块 320与控制电路连接， 用于向充电电池 310充电。
[0068] 控制电路还可包括状态指示模块 330和幵关， 状态指示模块 330用于指示电机的 工作状态， 幵关用于给控制电路触发信号， 来控制幵闭电机。
[0069] 进一步地， 控制电路 300通过对线圈通电脉冲的计数可以确定机械摆动次数， 输出信号对机械单元的运行状况给与相应的指示。
[0070] 该摆动电机的摆臂绕支点摆动， 支点与摆臂配合结构的寿命即是该电机的寿命
， 例如摆臂通过轴承安装在摆动轴上， 该轴承的寿命就是电机的寿命， 因此该 电机的寿命异常长， 是现有的有刷直流电机无法相比的。 或者摆臂也可直接套 接在摆动轴， 此吋该套接结构的寿命就是电机的寿命。
[0071] 该摆动电机功耗小， 力矩大， 寿命长， 电流稳定， 可用充电电池供电， 适合于 便携性设计。 也使得该电动清洁毛刷具有足够的力矩和合适的摆幅， 不仅能满 足洗脸刷应用， 也能满足沐浴刷应用， 还可做其他清洁应用。
[0072] 实施例二：
[0073] 本实施例二提供另一种摆动电机。
[0074] 请参考图 10， 该摆动电机在实施例一所示结构上进行了改进， 增加了用于在恒 定摆动频率下产生共振的共振弹性件。
[0075] 具体地， 该共振弹性件一端固定在摆臂的支点上， 另一端连接在外臂或内臂上
[0076] 进一步地， 图 10中所示共振弹性件为直线型的弹簧钢丝， 此外， 也可用其他形 状的弹性件来代替， 如图 11所示共振弹性件的中部则为弯曲设置。 以上应用了具体个例对本发明进行阐述， 只是用于帮助理解本发明， 并不用以 限制本发明。 对于本领域的一般技术人员， 依据本发明的思想， 可以对上述具 体实施方式进行变化。
技术问题
问题的解决方案
发明的有益效果

Claims

权利要求书
[权利要求 1] 一种用于生物体体表清洁的电动清洁毛刷,其特征在于， 包括摆动电 机和由摆动电机带动的毛刷， 所述摆动电机包括：
U型磁轭， 所述 U型磁轭具有第一支脚和第二支脚， 所述第一支脚和 第二支脚上分别缠绕有线圈；
控制电路， 所述控制电路与线圈电连接， 并产生交变脉冲， 使 U型磁 轭的两个支脚的端面产生交变磁极；
可绕支点摆动的摆臂， 所述摆臂自 U型磁轭的端面向外延伸， 且以支 点为界， 所述摆臂靠近 U型磁轭的一端为内臂， 所述摆臂远离 U型磁 轭的一端为外臂；
第二磁轭， 所述第二磁轭安装在内臂靠近 U型磁轭的一端； 以及四个永磁体， 所述永磁体固定安装在第二磁轭上； 所述四个永磁 体依次分布在以支点为圆心的同一圆周上， 且按照排列顺序依次为第 一永磁体、 第二永磁体、 第三永磁体和第四永磁体； 所述第一永磁体 和第四永磁体的径向端面的极性相同， 所述第二永磁体和第三永磁体 的径向端面的极性相同； 所述第一永磁体的径向端面和第二永磁体径 向端面的极性相反且对应第一支脚的端面设置； 所述第三永磁体的径 向端面和第四永磁体径向端面的极性相反且对应第二支脚的端面设置 ， 所述永磁体的端面和其对应支脚的端面具有气隙；
所述毛刷与摆臂连接， 由所述摆臂带动毛刷往复摆动。
[权利要求 2] 如权利要求 1所述的电动清洁毛刷， 其特征在于， 所述第一永磁体与 第二永磁体之间的间隙小于第一支脚端面的宽度， 所述第三永磁体与 第四永磁体之间的间隙小于第二支脚端面的宽度。
[权利要求 3] 如权利要求 1所述的电动清洁毛刷， 其特征在于， 所述第一支脚和第 二支脚的端面具有匹配永磁体摆动吋所对应圆周的圆弧面。
[权利要求 4] 如权利要求 1所述的电动清洁毛刷， 其特征在于， 所述永磁体的径向 端面宽度小于 U型磁轭支脚的端面宽度。
[权利要求 5] 如权利要求 1所述的电动清洁毛刷， 其特征在于， 在所述摆臂的两侧 设置有用于吸收摆臂在摆动到位吋的转动惯量的弹性体， 所述弹性体 的弹性特征为二次以上的曲线。
[权利要求 6] 如权利要求 5所述的电动清洁毛刷， 其特征在于， 所述弹性体为圆球 、 椭圆球、 圆柱、 椭圆柱或半圆形的硅胶件或橡胶件。
[权利要求 7] 如权利要求 1所述的电动清洁毛刷， 其特征在于， 所述外臂和 /或内臂 上设置有用于力输出的摆杆， 所述摆杆垂直于摆臂的摆动平面， 所述 毛刷固定在摆杆上。
[权利要求 8] 如权利要求 1所述的电动清洁毛刷， 其特征在于， 还包括共振弹性件
， 所述共振弹性件一端固定在摆臂的支点上， 另一端连接在外臂或内 臂上。
PCT/CN2016/112181 2016-02-19 2016-12-26 用于生物体体表清洁的电动清洁毛刷 WO2017140179A1 (zh)

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