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WO2017031964A1 - 摆动电机及电推剪 - Google Patents

摆动电机及电推剪 Download PDF

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Publication number
WO2017031964A1
WO2017031964A1 PCT/CN2016/074161 CN2016074161W WO2017031964A1 WO 2017031964 A1 WO2017031964 A1 WO 2017031964A1 CN 2016074161 W CN2016074161 W CN 2016074161W WO 2017031964 A1 WO2017031964 A1 WO 2017031964A1
Authority
WO
WIPO (PCT)
Prior art keywords
permanent magnet
swing
arm
leg
yoke
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/CN2016/074161
Other languages
English (en)
French (fr)
Inventor
胡建坤
胡建长
胡斐然
胡斐凡
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP2018541210A priority Critical patent/JP6697835B2/ja
Priority to PCT/CN2016/074161 priority patent/WO2017031964A1/zh
Priority to EP16838227.3A priority patent/EP3419151B1/en
Publication of WO2017031964A1 publication Critical patent/WO2017031964A1/zh
Priority to US16/049,935 priority patent/US10511214B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • H02K33/18—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with coil systems moving upon intermittent or reversed energisation thereof by interaction with a fixed field system, e.g. permanent magnets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B19/00—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers
    • B26B19/12—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers of the oscillating- cutter type; Cutting heads therefor; Cutters therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B19/00—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers
    • B26B19/28—Drive layout for hair clippers or dry shavers, e.g. providing for electromotive drive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B19/00—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers
    • B26B19/28—Drive layout for hair clippers or dry shavers, e.g. providing for electromotive drive
    • B26B19/282—Motors without a rotating central drive shaft, e.g. linear motors
    • B26B19/284—Motors without a rotating central drive shaft, e.g. linear motors with an actuator oscillating about a pivot axis
    • 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 application relates to a motor, in particular a motor that can output an oscillating motion.
  • An electric machine is an electromagnetic device that realizes the conversion of 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, providing a power source for a large number of electric appliances or various machines. .
  • the electric clipper is a device that uses a motor as a power mechanism.
  • the motor of the electric clipper is divided into a rotating motor and a swinging motor.
  • Rotating electric machine is a rotating electromagnetic machine that relies on the principle of electromagnetic induction to realize the mutual conversion of mechanical energy and electric energy.
  • the rotating electric machine converts rotary motion into reciprocating swing by means of a transmission mechanism.
  • the usual transmission mechanism such as cam mechanism and eccentric coupling Rod structure.
  • the oscillating motor includes a mountain core magnet, a permanent magnet (one or two), and a swing arm composed of pure iron and connected to the permanent magnet. Under the action of the coil on the mountain core magnet, the swing arm is in the mountain.
  • the type of magnetic yoke swings left and right such as the public nickname 1070359 (permanent magnet electric hair clipper), the public nickname is 203357478U (electric clipper swing rod) and other patents.
  • the reciprocating oscillating motion is output in such a manner that the rotating electric machine cooperates with the cam mechanism or the eccentric link structure, and the working current is large, especially the starting current and the blocking yoke are abnormally large.
  • a 3.7 volt DC rotating brush motor is used, the working current is 800-1200 mA, the power is about 4 watts, the swing frequency varies greatly with the resistance, the plug ⁇ current exceeds 2000 mA, and the life of the motor is about 400 ⁇ .
  • the magnetic flux of the middle bracket of the mountain core magnet is large, and the magnetic flux of the magnetic poles of the brackets at both ends is small, and the two ends of the bracket have only a single suction force or a short repulsive force during operation.
  • the middle bracket only has suction and repulsive force in a short period of time, and the other crucibles only have suction force and are larger than the suction or repulsive force of the brackets at both ends.
  • the coil must be connected to 220V AC, and its power reaches 8-12 watts.
  • the swing arm is oscillated by the fixed frequency of 220V AC, and the resonant spring resonance is guaranteed. If the structure is driven by a rechargeable battery at a low voltage, the torque is small and the working torque cannot be generated, that is, the electric clipper cannot be made into a wireless portable design.
  • the present application provides a novel swing motor and electric clipper.
  • the swing motor provided by the present application includes:
  • a U-shaped yoke having a first leg and a second leg, wherein the first leg and the second leg are respectively wound with a coil
  • 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 end faces have the same polarity; and the radial end faces of the first permanent magnets and the second permanent magnet radial end faces have opposite polarities and are disposed corresponding to the end faces of the first legs; the radial end faces of the third permanent magnets and the The radial ends of the four permanent magnets have opposite polarities and are disposed corresponding to the end faces of the second legs; the end faces of the permanent magnets and the end faces of their corresponding legs have an air gap.
  • the electric clipper provided by the present application includes a swing motor and a cutter head, and the swing motor adopts the swing motor according to any one of the above, and the cutter head is connected to the outer arm of the swing arm.
  • the swing motor provided by the present application comprises a U-shaped yoke, four permanent magnets and a swing arm, and the two legs of the U-shaped yoke are respectively wound with a coil, and the two legs can be made under the control circuit.
  • the end faces produce alternating magnetic poles.
  • the swing arm can swing around the fulcrum, and one end of the U-shaped yoke is an inner arm, and one end of the swinging arm away from the U-shaped yoke is an outer arm.
  • the four permanent magnets are fixedly mounted on the inner arm by the second yoke.
  • the four permanent magnets are respectively a first permanent magnet, a second permanent magnet, a third permanent magnet, and a fourth permanent magnet, which are sequentially distributed on the same circumference centered on the fulcrum.
  • the radial faces of the first permanent magnet and the fourth permanent magnet have the same polarity
  • the polar faces of the second permanent magnet and the third permanent magnet have the same polarity
  • the poles of the first permanent magnet and the second permanent magnet have radial end faces.
  • the opposite ends of the first leg are disposed opposite to each other; the radial end faces of the third permanent magnet and the radial end faces of the fourth permanent magnet are opposite in polarity and are disposed corresponding to the end faces of the second legs, and the permanent magnets are gas-corresponding to the U-shaped magnetic disks Gap.
  • the four permanent magnets produce torque in the same direction of rotation.
  • the second and fourth permanent magnets generate the same magnitude of magnetic repulsive force for the U-shaped yoke;
  • the third permanent magnet generates a magnetic repulsive force of the same magnitude for the U-shaped yoke, and the second and fourth permanent magnets generate the same magnetic attraction force for the U-shaped yoke.
  • 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.
  • the motor can be directly driven without the need of a cam mechanism or an eccentric link structure.
  • the noise is small, the current is stable, and there is no starting current like a rotating electric machine.
  • the current does not change much, the swing frequency does not change with the resistance, and can be powered by a rechargeable battery, which is convenient for portability design.
  • the electric clipper provided by the present application adopts the above-mentioned swing motor, and only needs to pass low-voltage direct current (such as 3.7V), the working current is about 500 mA, the power is about 2 watts, and the blocking current is about 700 mA.
  • the driving current is stable and the swing frequency does not change with the resistance.
  • the working current is lower than that of the brushed DC motor, and the energy saving effect is obvious.
  • the rechargeable lithium battery can be used, and there is no large current for starting and blocking the battery, and the battery life is longer, which is an energy-saving and environment-friendly design.
  • FIG. 1 is a schematic structural view of an embodiment of a swing motor of the present application
  • FIG. 2 is a schematic view showing the cooperation of the permanent magnet and the U-shaped yoke leg in the embodiment 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; [0023] 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. 1;
  • 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 of another embodiment of a swing arm output portion in the embodiment shown in FIG. 1;
  • FIG. 9 is a schematic structural view of a second embodiment of a swing motor of the present application.
  • FIG. 10 is a schematic structural view of a third 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;
  • FIG. 12 is a schematic structural view of an embodiment of an electric clipper of the present application. DETAILED DESCRIPTION
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • the first embodiment provides an oscillating motor that can output a reciprocating oscillating motion.
  • 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 and fixed).
  • 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 swing shaft 410, and the swing 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 a housing of an electric appliance 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 power is on, the first The first and third permanent magnets 610, 630 generate the same magnitude of magnetic attraction for the U-shaped yoke 100, and the second and fourth permanent magnets 620, 640 generate the same magnetic repulsive force for the U-shaped yoke 100; The first and third 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. When the magnetic flux is large, the driving power is reduced accordingly.
  • the four permanent magnets are 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 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.
  • the position shown in Figure 3 forms the first swing.
  • 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.
  • 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.
  • the width of each permanent magnet may be the same as or different from the width of the end face of the legs of the U-shaped yoke 100.
  • the width referred to herein means 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
  • the end faces 111, 121 of 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
  • 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.
  • 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
  • the permanent magnets are staggered to improve the output torque curve and make the output torque smooth.
  • the outer arm 430 has a force output portion 431, and the force output portion 431 has a curved outer wall.
  • the curved outer wall acts on the actuator to drive the actuator to oscillate.
  • 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 inner force arm distance is the distance from the radial end surface of the permanent magnet to the center of the swing shaft 410
  • the external force arm distance is the center of the swing shaft 410 to the outer arm 430.
  • the ratio of the inner wall to the outer wall length can also be designed according to the demand for the amplitude of the swing.
  • a swing lever for force output may also be disposed on the outer arm 430 and/or the inner arm 420.
  • the swing rods 432, 421 are vertical (the vertical includes a substantially vertical angle).
  • the swing arm 400 swings, the swing arm 400 swings, the swing rods 432, 421 and the swing rod are mounted. 432, 42
  • 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 status indication module 330 for indicating an operating state of the motor, and a status indicating module 330 for controlling a trigger signal to the control circuit to control the closed 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 and cannot be compared 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 shown in this embodiment can also drive various mechanical units that need to reciprocate and have a small moving distance.
  • the swing motor does not need a cam mechanism or an eccentric link structure, the noise is small, the current is stable, the plugging current does not change much, and the swing frequency does not change with the resistance.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • the second embodiment provides another swing motor.
  • the oscillating motor is improved in the structure shown in the first embodiment.
  • an elastic body 810 for absorbing the moment of inertia of the swing arm 400 in the swing position is provided, and the elastic characteristic of the elastic body 810 is a curve of two or more times.
  • the elastic body 810 is mainly used to absorb the moment of inertia of the swing arm 400 under no-load condition, and the elastic force increases with the compression stroke. Before the position is reached, the elastic force is small, and the elastic force is rapidly increased when the position is fast. .
  • the elastic characteristic of the elastic body 810 can ensure that the elastic body 810 does not have excessive influence on the swing of the swing arm 400 under load (the swinging distance of the swing arm 400 is attenuated under load), and only the swing arm 400 is excessively squeezed under no-load condition.
  • the elastomer 810 will generate a large restoring force to prevent the swing arm 400 from striking the surrounding components in an unloaded state.
  • the elastic body 810 can be mounted on both sides of the inner arm 420 and/or the outer arm 430, and the embodiment mounts the elastic body 810 The position between the inner arm 420 and the housing 700.
  • the elastomer 810 may be a silicone member or a rubber member in the shape of a sphere, an elliptical sphere, a cylinder, an elliptical cylinder or a semicircle.
  • a detecting element for detecting the in-position state of the first permanent magnet 610 or the fourth permanent magnet 640 may be disposed on the moving track of the first permanent magnet 610 and/or the fourth permanent magnet 640 outside the U-shaped yoke 100 820.
  • the detecting component 820 is connected to the control circuit 300.
  • the detecting component 820 can detect whether the first permanent magnet 610 and/or the fourth permanent magnet 640 reach the detecting position or reach the detecting position, thereby determining the magnitude of the resistance, thereby changing the pulse width of the energizing pulse to change the current. size. For example, if the first permanent magnet 610 and/or the fourth permanent magnet 640 are long between the turns, the resistance is large, and the control circuit 300 can control the increase of the current, and conversely, reduce the current.
  • the detecting element 820 can select a Hall element, and can also select other detecting elements 820 that can be used for position detection.
  • control circuit 300 can change the driving current by analyzing the torque variation of the driving unit, thereby achieving stable driving and reducing power consumption.
  • the third 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.
  • Embodiment 4 provides an electric clipper.
  • the electric clipper includes an oscillating motor and a cutter head, and the oscillating motor can output a reciprocating oscillating motion to drive the reciprocating oscillating motion of the cutter head to realize haircut.
  • the swing motor can adopt the swing motor structure shown in any of the above embodiments, wherein the cutter head is connected to the outer arm of the swing arm, specifically, the outer arm 430 has a force output portion 431, and the force output portion 431 has an arc.
  • the head 910 has a toggle connecting body 920 having a groove 921 matched with the force output portion 431.
  • the force output portion 431 is mounted in the groove 921, and the curved outer wall can act on the toggle connecting body. 920, the drive cutter head 910 swings.
  • the electric clipper shown in this embodiment only needs to pass low-voltage direct current (such as 3.7V), the working current is about 750 mA, the power is about 2 watts, the blocking current is about 700 mA, and the driving current is stable. There is no large current to start the ⁇ and plug ⁇ like a rotating motor, and the oscillating frequency does not change with the resistance. The life of the motor is abnormally long, its working current is smaller than that of the brushed DC motor, and the energy saving effect is obvious.
  • the rechargeable lithium battery can be used, and there is no large current of starting and blocking, and the battery life is longer, which is an energy-saving and environmentally friendly design.
  • control circuit 300 can determine the number of times the blade is swung by counting the energization pulse of the coil, and the output signal gives a corresponding indication to the lubrication of the blade to prevent thermal wear of the knife hair.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
  • Dry Shavers And Clippers (AREA)

Abstract

一种摆动电机及电推剪，该摆动电机包括U型磁轭（100），四个永磁体（610，620，630，640）和摆臂（400），该U型磁轭（100）在控制电路（300）下可使两个支脚（110,120）的端面（111、121）产生交变磁极。该四个永磁体（610，620，630，640）通过第二磁轭（500）固定安装在内臂（420）上。四个永磁体（610，620，630，640）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），其依次分布在以支点为圆心的同一圆周面上。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，且与第一永磁体（610）的径向端面（611）的极性相反。当线圈通电时，四个永磁体都会产生相同旋转方向的转矩，从而在U型磁轭的两个支脚作用下往复摆动。该电机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。

Description

说明书 发明名称：摆动电机及电推剪 技术领域
[0001] [0001]本申请涉及一种电机， 尤其是可输出摆动运动的电机。
[0002] 背景技术
[0003] 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。
[0004] 电推剪即为一种以电机为动力机构的设备， 目前， 电推剪的电机分为旋转电机 和摆动电机。 旋转电机是依靠电磁感应原理而运行的旋转电磁机械， 用于实现 机械能和电能的相互转换， 同吋旋转电机借助传动机构来将旋转运动转换成往 复摆动， 通常的传动机构例如凸轮机构、 偏心连杆结构。 摆动电机则包括山型 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， 在 山型铁芯磁扼上线圈的作用下， 摆臂在山型磁扼左右摆动， 如公幵号为 1070359 (永磁式电推剪） 、 公幵号为 203357478U (电推剪摆动杆） 等专利。
[0005] 但， 以旋转电机配合凸轮机构或偏心连杆结构这种方式输出往复摆动运动， 工 作电流大， 尤其是启动吋和堵转吋工作电流异常大。 如采用 3 . 7伏直流旋转有 刷电机， 工作电流在 800-1200毫安， 功率 4瓦左右， 摆动频率随阻力变化大， 堵 摆吋电流超过 2000毫安， 电机的寿命约 400小吋。
[0006] 而摆动电机中， 山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。 此类电推剪， 要保证足够的力矩， 就要使线圈通 220V交流电， 其功率达到 8-12 瓦， 同吋利用 220V交流电的固定频率使摆臂摆动， 靠共振弹簧共振保障。 此结 构如用充电电池做低压驱动， 则力矩很小， 无法产生工作的力矩， 也就是此类 电推剪不能做无线的便携式设计。
[0007] 发明内容 [0008] 本申请提供一种新型的摆动电机及电推剪。
[0009] 本申请提供的摆动电机， 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； 并且所述第 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] 本申请提供的电推剪， 包括摆动电机和刀头， 所述摆动电机采用如上述任一项 所述的摆动电机， 所述刀头与摆臂的外臂连接。
[0016] 本申请的有益效果是：
[0017] 本申请提供的摆动电机， 其包括 U型磁轭、 四个永磁体和摆臂， 该 U型磁轭的 两个支脚上分别缠绕有线圈， 在控制电路下可使两个支脚的端面产生交变磁极 。 该摆臂可绕支点摆动的摆臂， 其靠近 U型磁轭的一端为内臂， 远离 U型磁轭的 一端为外臂。 该四个永磁体通过第二磁轭固定安装在内臂上。 四个永磁体分别 为第一永磁体、 第二永磁体、 第三永磁体和第四永磁体， 其依次分布在以支点 为圆心的同一圆周上。 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， 同吋第一永磁体与第二永磁体径向端 面的极性相反且对应第一支脚的端面设置； 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， 永磁体与 U型磁扼对应有气 隙。 当线圈通电， 四个永磁体都会产生相同旋转方向的转矩。 如果通电后， 第 一和第三永磁体对 U型磁轭产生大小相同的磁吸力， 则第二和第四永磁体对 U型 磁轭产生大小相同的磁斥力； 反向通电， 第一和第三永磁体对 U型磁轭产生大小 相同的磁斥力， 则第二和第四永磁体对 U型磁轭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， 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 。 对于需要往复运动且运动距离不大的机械单元， 可采用该电机直接驱动， 不 需要凸轮机构或偏心连杆结构， 噪音小， 电流稳定， 也没有像旋转电机那样的 启动大电流， 堵摆吋电流变化不大， 摆动频率不随阻力变化， 可用充电电池供 电， 便于便携性设计。
[0018] 本申请提供的电推剪采用上述摆动电机， 只需通低压直流电 （如 3.7V) ， 工作 电流约 5 0 0毫安， 功率 2瓦左右， 堵摆吋电流约 7 0 0毫安， 驱动电流平稳 ， 摆动频率不随阻力变化。 其工作电流小于有刷直流电机， 节能效果明显， 且 可用充电锂电池， 没有启动吋和堵摆吋的大电流， 电池寿命更长， 是一种节能 环保的设计。
[0019] 附图说明
[0020] 图 1为本申请摆动电机一种实施例的结构示意图；
[0021] 图 2为图 1所示实施例中永磁体与 U型磁轭支脚的配合示意图；
[0022] 图 3为图 1所示实施例在通电状态下的示意图；
[0023] 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；
[0024] 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；
[0025] 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；
[0026] 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；
[0027] 图 8为图 1所示实施例中摆臂输出部分另一种实施例的结构示意图；
[0028] 图 9为本申请摆动电机第二种实施例的结构示意图；
[0029] 图 10为本申请摆动电机第三种实施例的结构示意图；
[0030] 图 11为图 10所示实施例中共振弹性件另一种形状示意图；
[0031] 图 12为本申请电推剪一种实施例的结构示意图。 [0032] 具体实施方式
[0033] 实施例一：
[0034] 本实施例一提供一种摆动电机， 该摆动电机可输出一种往复摆动运动。
[0035] 请参考图 1和 2， 该摆动电机包括：
[0036] 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;
[0037] 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；
[0038] 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;
[0039] 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；
[0040] 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。
[0041] 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。
[0042] 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 电机的电器的壳体。
[0043] 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， 作用磁通大， 驱动功率相应的就会减小。
[0044] 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。
[0045] 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。
[0046] 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。
[0047] 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。
[0048] 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。 [0049] 每个永磁体的宽度与 U型磁轭 100支脚的端面宽度可以相同或者不同。 这里所说 的宽度是指图 2中箭头所指方向上的宽度。
[0050] 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。
[0051] 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。
[0052] 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。
[0053] 进一步地， 请参考图 1， 外臂 430具有力输出部 431， 力输出部 431具有弧形外壁
， 该弧形外壁可作用于执行元件， 驱动执行元件摆动。
[0054] 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的力输出 部 431中心的距离。 这里还可根据对摆动幅度的需求设计内壁与外壁长度之比。
[0055] 此外， 请参考图 8， 还可在外臂 430和 /或内臂 420上设置有用于力输出的摆杆 43
2、 421， 该摆杆 432、 421垂直 （该垂直包括大致成垂直角度这一类情况） 于摆 臂 400的摆动平面， 当摆臂 400摆动吋， 带动摆杆 432、 421及安装在摆杆 432、 42
1上的执行元件 440摆动。
[0056] 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。 [0057] 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。
[0058] 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。
[0059] 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。
[0060] 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。
[0061] 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。
[0062] 本实施例所示摆动电机除可带动电推剪外， 还可带动各种需要往复运动且运动 距离不大的机械单元。 该摆动电机不需要凸轮机构或偏心连杆结构， 噪音小， 电流稳定， 堵摆吋电流变化不大， 摆动频率不随阻力变化。
[0063] 实施例二：
[0064] 本实施例二提供另一种摆动电机。
[0065] 请参考图 9， 该摆动电机在实施例一所示结构上进行了改进。
[0066] 具体地， 在摆臂 400的两侧设置有用于吸收摆臂 400在摆动到位吋的转动惯量的 弹性体 810， 弹性体 810的弹性特征为二次以上的曲线。
[0067] 其中， 该弹性体 810主要用于吸收摆臂 400在空载状态下的转动惯量， 其弹力随 着压缩行程的增加， 在到位前， 弹力很小， 快到位吋， 弹力快速变大。 该弹性 体 810的弹性特征可保证弹性体 810对负载状态下摆臂 400的摆动不产生过多影响 (负载状态下摆臂 400摆动距离会衰减） ， 只有摆臂 400在空载状态下过多挤压 弹性体 810才会产生较大的回复力， 避免摆臂 400在空载状态撞击周围部件。
[0068] 弹性体 810可安装在内臂 420和 /或外臂 430的两侧， 本实施例将弹性体 810安装 在内臂 420与壳体 700之间的位置。
[0069] 该弹性体 810可采用圆球、 椭圆球、 圆柱、 椭圆柱或半圆形等形状的硅胶件或 橡胶件。
[0070] 在 U型磁轭 100外侧且第一永磁体 610和 /或第四永磁体 640的移动轨迹上还可设 置有用于检测第一永磁体 610或第四永磁体 640到位状态的检测元件 820， 检测元 件 820与控制电路 300连接。
[0071] 该检测元件 820可检测第一永磁体 610和 /或第四永磁体 640是否到达检测位置或 到达检测位置的吋间， 从而判断阻力的大小， 进而改变通电脉冲脉宽来改变电 流的大小。 例如， 第一永磁体 610和 /或第四永磁体 640到位吋间长， 则说明阻力 大， 则控制电路 300可控制增大电流， 反之， 则减小电流。
[0072] 当然， 该检测元件 820可选用霍尔元件， 也可选择其他可用于到位情况检测的 检测元件 820。
[0073] 如此， 控制电路 300可以通过分析驱动单元的力矩变化， 从而改变驱动电流， 达到驱动稳定， 减少功耗。
[0074] 实施例三
[0075] 本实施例三提供另一种摆动电机。
[0076] 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。
[0077] 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
[0078] 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。
[0079] 实施例四
[0080] 本实施例四提供一种电推剪。
[0081] 请参考图 12， 该电推剪包括摆动电机和刀头， 该摆动电机可输出一种往复摆动 运动， 带动刀头往复摆动运动， 从而实现理发。
[0082] 该摆动电机可采用上述任一实施例所示的摆动电机结构， 其中该刀头与摆臂的 外臂连接， 具体地， 外臂 430具有力输出部 431， 力输出部 431具有弧形外壁， 刀 头 910具有拨动连接体 920， 该拨动连接体 920具有与力输出部 431匹配的凹槽 921 ， 该力输出部 431安装在凹槽 921内， 其弧形外壁可作用于拨动连接体 920， 驱动 刀头 910摆动。
[0083] 本实施例所示电推剪只需通低压直流电 （如 3.7V) ， 工作电流约 5 0 0毫安， 功率 2瓦左右， 堵摆吋电流约 700毫安， 驱动电流平稳， 也没有像旋转电机那样 启动吋和堵摆吋的大电流， 摆动频率不随阻力变化。 其电机的寿命异常长， 其 工作电流小于有刷直流电机， 节能效果明显， 且可用充电锂电池， 没有启动吋 和堵摆吋的大电流， 电池寿命更长， 是一种节能环保的设计。
[0084] 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刀头摆动次数， 输出信号对刀头加油润滑给与相应的指示， 防止刀头发热磨损。
[0085] 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] 一种摆动电机,其特征在于， 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； 并且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。
[权利要求 2] 如权利要求 1所述的摆动电机， 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所述的摆动电机， 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所述的摆动电机， 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 5] 如权利要求 4所述的摆动电机， 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 6] 如权利要求 1所述的摆动电机， 其特征在于， 在 U型磁轭外侧且第一 永磁体和 /或第四永磁体的移动轨迹上设置有用于检测第一永磁体或 第四永磁体到位状态的检测元件， 所述检测元件与控制电路连接。
[权利要求 7] 如权利要求 6所述的摆动电机， 其特征在于， 所述检测元件为霍尔元 件。
[权利要求 8] 如权利要求 1所述的摆动电机， 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
[权利要求 9] 如权利要求 1所述的摆动电机， 其特征在于， 所述外臂具有力输出部
， 所述力输出部具有弧形外壁。
[权利要求 10] 如权利要求 1所述的摆动电机， 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。
[权利要求 11] 一种电推剪,其特征在于， 包括摆动电机和刀头， 所述摆动电机采用 如权利要求 1-8任一项所述的摆动电机， 所述刀头与摆臂的外臂连接
[权利要求 12] 如权利要求 11所述的电推剪， 其特征在于， 所述外臂具有力输出部， 所述力输出部具有弧形外壁， 所述刀头具有拨动连接体， 所述拨动连 接体具有与力输出部匹配的凹槽， 所述力输出部安装在所述凹槽内。
PCT/CN2016/074161 2016-02-19 2016-02-19 摆动电机及电推剪 Ceased WO2017031964A1 (zh)

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