WO2018188284A1 - 一种无刷交流振荡微电机 - Google Patents

一种无刷交流振荡微电机 Download PDF

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Publication number
WO2018188284A1
WO2018188284A1 PCT/CN2017/104744 CN2017104744W WO2018188284A1 WO 2018188284 A1 WO2018188284 A1 WO 2018188284A1 CN 2017104744 W CN2017104744 W CN 2017104744W WO 2018188284 A1 WO2018188284 A1 WO 2018188284A1
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Prior art keywords
core lamination
magnet
region
strip
brushless
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PCT/CN2017/104744
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English (en)
French (fr)
Inventor
吴美平
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珠海三吉士健康科技有限公司
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Publication of WO2018188284A1 publication Critical patent/WO2018188284A1/zh

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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
    • H02K33/02—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
    • H02K33/04—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 wherein the frequency of operation is determined by the frequency of uninterrupted AC energisation
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K29/00—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices

Definitions

  • the present invention relates to the field of brushless motors, and more particularly to a brushless AC oscillating micromotor.
  • motors widely used in the market include brushed motors and brushless motors.
  • the general brushed motor switches the current of the input coil through the mechanical mode of the commutator and the brush.
  • This brushed motor passes the commutator and the brush mechanism.
  • the way to switch the current of the input coil is relatively easy to control.
  • the mechanical wear-in of the brush and the commutator tends to accelerate the loss of the motor, so that its service life is not long and it is easy to emit noise.
  • the AC oscillating micromotor is a motor that reciprocates around the axis at a certain angle after the AC power is supplied.
  • Such micromotors are widely used in the fields of electric toothbrushes and the like.
  • such motors have small motor amplitudes, especially in the case of damping, and the amplitude attenuation is large; the manufacturing process is complicated and the production cost is high.
  • the amplitude can be controlled according to the frequency of the drive to achieve better application results; the assembly process is improved, the manufacturing cost is reduced; and the brushless motor is used to extend the service life.
  • the object of the present invention is to solve the above technical problem, and to provide a brushless AC oscillating micro-motor, which realizes a new motor structure for optimizing the amplitude-frequency characteristic of the motor, and can control the amplitude according to the driving frequency to achieve better application effect; Process, reduce manufacturing costs; use brushless motor to extend the life.
  • the present invention provides a brushless AC oscillating micromotor, comprising:
  • a rotor including a shaft, a first core lamination through the shaft, and a second core lamination
  • a stator including a coil passing through a shaft and located intermediate the first core lamination and the second core lamination, and a surrounding shaft, a coil, and the first core lamination and the first The first strip magnet, the second strip magnet, the third strip magnet, and the fourth strip magnet of the two core laminations.
  • each strip magnet comprises a first region of the top of the magnet, a second region of the middle of the magnet, and a third region of the bottom of the magnet.
  • first region and the third region are magnetization regions, the magnetization direction is radial, and the first region and the third region have opposite polarities on the same side, and the second region has no magnetic,
  • the magnetic property of the first region of each strip magnet facing the first core lamination is opposite to the magnetic property of the first region of the adjacent strip magnet facing the first core lamination
  • the magnet of each strip The magnetic property of the third region facing the side of the second core lamination is opposite to the magnetic property of the third region of the adjacent strip magnet facing the side of the second core lamination.
  • the method further comprises:
  • the bottom cover is made of an insulating material, and two wire guiding passages are provided to respectively lead the two ends of the coil wire.
  • the brushless AC oscillating micromotor further includes a weight assembly.
  • the weight assembly comprises: a weight copper sleeve; an upper cover for receiving the weight copper sleeve; and a fixing plate;
  • the upper cover is fixed to the fixing plate by an upper cover fixing member, and wherein the fixing plate is fixed to the magnet holder by a fixing plate fixing member.
  • the brushless AC oscillating micromotor further includes a power supply module connected to the coil for supplying frequency controllable alternating current to the coil, so that the motor amplitude can be controlled according to the supplied alternating current frequency.
  • the invention provides an optimized amplitude-frequency characteristic of the motor, and can control the amplitude according to the driving frequency to achieve better application effect; increase the weight, and the amplitude attenuation is small in the case of damping; using the iron core lamination, arranging the magnet, and the bottom The cover is passed through the coil wire to achieve the insulation effect, the assembly process is improved, thereby reducing the manufacturing cost; and the brushless motor structure is applied, thereby prolonging the service life.
  • FIG. 1 is a schematic view showing the overall structure of a weightless brushless AC oscillation micromotor according to an embodiment of the invention
  • FIG. 2 is a schematic diagram showing the internal structure of a weightless brushless AC oscillation micromotor according to an embodiment of the invention
  • FIG. 3 is a cross-sectional view of a bottom cover of a brushless AC oscillating micromotor according to an embodiment of the invention
  • FIG. 4 is a schematic view showing the overall structure of a weightless brushless AC oscillating micromotor according to an embodiment of the invention.
  • FIG. 5 is a schematic diagram showing a secondary structure of a weightless brushless AC oscillating micromotor according to an embodiment of the invention
  • FIG. 6 is a schematic diagram showing the internal structure of a weighted brushless AC oscillating micromotor according to an embodiment of the invention:
  • FIG. 7A is a schematic view showing the arrangement of strip magnets of a brushless AC oscillating micromotor according to an embodiment of the invention.
  • Figure 7B is a cross-sectional view of the magnet taken along line A-A of Figure 7A;
  • Figure 7C is a cross-sectional view of the magnet taken along line B-B of Figure 7A;
  • FIG. 8A is a schematic diagram of a non-energized operation of a brushless AC oscillating micromotor according to an embodiment of the invention.
  • FIG. 8B is a schematic diagram of a forward energization operation of a brushless AC oscillating micromotor according to an embodiment of the invention.
  • Figure 8C is a cross-sectional view taken along line C-C of Figure 8B;
  • Figure 8D is a cross-sectional view taken along line D-D of Figure 8B;
  • 8E is a schematic diagram of a negative energizing operation of a brushless AC oscillating micromotor according to an embodiment of the invention.
  • Figure 8F is a cross-sectional view taken along line C-C of Figure 8E;
  • Figure 8G is a cross-sectional view taken along line D-D of Figure 8E;
  • the brushless AC oscillating micromotor of the present invention comprises:
  • a rotor comprising a shaft 1, a first core lamination 41 passing through the shaft 1 and a second core lamination 42;
  • stator including a coil 5 passing through the shaft 1 and located intermediate the first core lamination 41 and the second core lamination 42, and a surrounding shaft 1, a coil 5, and the first core
  • a magnet holder 7 for fixing the strip magnets 61, 62, 63, 64;
  • a casing 8 accommodating the rotor and the stator
  • a bottom cover 9 mounted at a bottom end of the casing 8, a bearing 2 at both ends of the first core lamination 41 and the second core lamination 42, and the first core lamination 41 and the a spacer 3 between the second core lamination 42 and the bearing 2.
  • FIG. 3 a cross-sectional view of a bottom cover of a counterweightless brushless AC oscillating micromotor according to an embodiment of the present invention is shown.
  • the bottom cover 9 is made of an insulating material and is provided with two wire guiding passages 15 for respectively leading out the ends of the wires of the coil 5.
  • the present invention is not limited to the motor bottom cover, and the present invention can also select other suitable positions of the motor casing to retain the wire holes according to different part arrangements.
  • the brushless AC oscillating micromotor of the present invention further includes a weight assembly including: a weight copper sleeve 10; an upper cover 11 for accommodating the weight copper sleeve 10;
  • the fixing plate 13 is fixed to the fixing plate 13 by the upper cover fixing member 12, and wherein the fixing plate 13 is fixed to the magnet holder 7 by the fixing plate fixing member 14.
  • the present invention is not limited thereto, and the present invention can select different weight materials and structures according to different needs.
  • each of the strip magnets 61, 62, 63, 64 includes a first region of the top of the magnet, a second region of the middle of the magnet, and a third region of the bottom of the magnet, wherein the first region and The third region is a magnetization region, the magnetization direction is a radial direction, and the first region and the third region have opposite polarities on the same side, and the second region has no magnetism.
  • each of the strip magnets 61, 62, 63, 64 faces the magnetic side of the first core lamination 41 and the first region of the adjacent strip magnets 61, 62, 63, 64 faces the first iron
  • the magnetic side of the core lamination 41 is opposite
  • the third region of each of the strip magnets 61, 62, 63, 64 faces the magnetic side of the second core lamination 42 and the adjacent strip magnets 61, 62, 63,
  • the third region of 64 faces the opposite side of the magnetic core of the second core lamination 42.
  • the brushless AC oscillating micromotor further includes a power supply module (not shown) electrically connected to the coil 5 for providing frequency-controlled alternating current to the coil 5, thereby being capable of being provided according to The AC frequency controls the motor amplitude.
  • FIG. 8A there is shown a schematic diagram of a non-energized operation of a brushless AC oscillating micromotor according to an embodiment of the present invention.
  • the first core lamination 41, the second core lamination 42 and the shaft 1 are fixed together in the intermediate position by the cogging force.
  • FIG. 8B a schematic diagram of a forward energization operation of a brushless AC oscillating micromotor according to an embodiment of the present invention is shown.
  • the magnetic lines of force pass through the shaft 1 (the iron core) in the coil 5, flow to the second core lamination 42 and then through the third region of the strip magnets 62, 63, through the casing 8, to the strip magnet 62.
  • the first region of 63 is then returned to the shaft 1 via the first core lamination 41 to complete the closed loop; see Fig. 8C, which shows a cross-sectional view taken along line CC of Fig. 8B.
  • the C-C profile is repelled by the same sex, the opposite phase attracts, and the shaft 1 rotates clockwise due to the pushing of the second core lamination 42; referring to Fig. 8D, it shows a cross-sectional view taken along line D-D of Fig. 8B. Due to the same-sex refraction of the D-D profile, the opposite phase attracts, and the shaft 1 rotates clockwise due to the pushing of the first core lamination 41; therefore, when the forward electric current is passed, the shaft 1 rotates clockwise.
  • FIG. 8E there is shown a schematic diagram of the negative energization operation of the brushless AC oscillating micromotor according to an embodiment of the present invention.
  • the magnetic lines of force pass through the shaft 1 (the iron core) in the coil 5, flow to the first core lamination 41, and then through the first region of the strip magnets 61, 64, through the casing 8, to the strip magnet
  • the second region of 61, 64 is then returned to the shaft 1 via the second core lamination 42 to complete the closed loop; see Figure 8F, which shows a cross-sectional view taken along line CC of Figure 8E.
  • the C-C profile is repelled by the same sex, and the opposite phase attracts.
  • the shaft 1 rotates counterclockwise due to the pushing of the second core lamination 42.
  • Fig. 8G it is a cross-sectional view taken along line D-D of Fig. 8E. Due to the same-sex refraction of the D-D profile, the opposite phase attracts, and the shaft 1 rotates counterclockwise due to the pushing of the first core lamination 41; therefore, when the negative electric current is passed, the shaft 1 rotates counterclockwise.
  • the core laminations 41, 42 will swing back and forth on both sides of the intermediate line as the direction of the current changes, thereby driving the shaft 1 to reciprocate around the axis at a certain angle.

Abstract

一种无刷交流振荡微电机，包括转子，所述转子包括轴（1）、穿过轴（1）的第一铁芯叠片（41）和第二铁芯叠片（42）；定子，所述定子包括穿过轴（1）且位于所述第一铁芯叠片（41）和所述第二铁芯叠片（42）中间的线圈（5），以及环绕轴（1）、线圈（5）以及所述第一铁芯叠片（41）和所述第二铁芯叠片（42）的第一条形磁铁（61）、第二条形磁铁（62）、第三条形磁铁（63）以及第四条形磁铁（64）。其中所述磁铁是同一种磁铁，该磁铁只在两端充磁，中间没有磁性，充磁方向为径向，且上下两端磁性相反，磁铁按照相邻磁铁极性相反的原则排列。底盖（9）穿孔引出导线，增加配重减小振幅衰减。该技术方案改善装配工艺，降低制造成本；使用无刷电机，延长使用寿命；依据驱动的频率控制振幅，增加配重装置减小有阻尼情况下的振幅衰减。

Description

一种无刷交流振荡微电机
技术领域
本发明涉及无刷电机领域，更特别地，涉及一种无刷交流振荡微电机。
背景技术
目前，市场上广泛使用的电机包括有刷电机和无刷电机，一般的有刷电机通过整流子和电刷的机械方式切换输入线圈的电流，这种有刷电机通过整流子和电刷的机械方式进行切换输入线圈的电流，其转速相对容易控制，但是，电刷和整流子的机械磨合往往会加快电机损耗，使得其使用寿命不长，并且容易发出噪声。
交流振荡微电机是一种通入交流电后，电机轴会绕轴心以一定的角度往复摆动的电机。这种微电机广泛应用于电动牙刷等领域。但目前此类的电机存在电机振幅小，尤其是在阻尼情况下，振幅衰减大；造工艺复杂，生产成本高。
因此，目前需要一种优化了电机幅频特性的新的电机结构，依据驱动的频率可以控制振幅，达到更好的应用效果；改善装配工艺，降低制造成本；使用无刷电机，延长使用寿命。
发明内容
本发明的目的是为了解决上述技术问题，提供一种无刷交流振荡微电机，实现电机幅频特性优化的新的电机结构，依据驱动的频率可以控制振幅，达到更好的应用效果；改善装配工艺，降低制造成本；使用无刷电机，延长使用寿命的目的。
为了实现上述目的，本发明提供了一种无刷交流振荡微电机，包括：
转子，所述转子包括轴、穿过轴的第一铁芯叠片和第二铁芯叠片；
定子，所述定子包括穿过轴且位于所述第一铁芯叠片和所述第二铁芯叠片中间的线圈，以及环绕轴、线圈以及所述第一铁芯叠片和所述第二铁芯叠片的第一条形磁铁、第二条形磁铁、第三条形磁铁以及第四条形磁铁。
优选地，每一条形磁铁均包括磁铁顶部的第一区域、磁铁中部的第二区域及磁铁底部的第三区域，
其中，所述第一区域和所述第三区域为充磁区域，充磁方向为径向，且所述第一区域和所述第三区域同一侧的极性相反，所述第二区域没有磁性，
其中，每一条形磁铁的第一区域面向第一铁芯叠片一侧的磁性与相邻条形磁铁的第一区域面向第一铁芯叠片一侧的磁性相反，以及每一条形磁铁的第三区域面向第二铁芯叠片一侧的磁性与相邻条形磁铁的第三区域面向第二铁芯叠片一侧的磁性相反。
优选地，还包括：
用于固定条形磁铁的磁铁支架；
容纳转子和定子的壳套；
安装于壳套底端的底盖；
位于所述第一铁芯叠片和所述第二铁芯叠片两端的轴承；以及
位于所述第一铁芯叠片和所述第二铁芯叠片与所述轴承之间的垫片。
优选地，所述底盖由绝缘材料制成，并且设置有两个导线引导通道，以分别引出线圈导线的两端。
优选地，所述无刷交流振荡微电机还包括配重组件。
优选地，所述配重组件包括：配重铜套；用于容纳配重铜套的上盖；以及固定板；
其中，所述上盖通过上盖固定件固定于所述固定板，以及其中，所述固定板通过固定板固定件固定于磁铁支架。
优选地，所述无刷交流振荡微电机，还包括与线圈连接的供电模块，用于向线圈提供频率可控的交流电，从而能够根据所提供的交流电频率来控制电机振幅。
本发明的有益效果为：
本发明提供优化了的电机幅频特性，依据驱动的频率可以控制振幅，达到更好的应用效果；增加配重，在有阻尼的情况下振幅衰减小；使用铁芯叠片、排列磁铁、底盖穿出线圈导线以达到绝缘效果的方式，改善装配工艺，从而实现降低制造成本；应用无刷电机结构，从而延长了使用寿命。
附图说明
下面结合附图对本发明进行以下描述，本发明的特征及优点将变得显而易见，这些附图并不旨在限制本发明的范围，而是为了展示其某些属性，其中：
图1是根据本发明一实施例的无配重无刷交流振荡微电机的整体结构示意图；
图2是根据本发明一实施例的无配重无刷交流振荡微电机的内部结构示意图；
图3是根据本发明一实施例的无刷交流振荡微电机的底盖剖面示意图；
图4是根据本发明一实施例的有配重无刷交流振荡微电机的整体结构示意图；
图5是根据本发明一实施例的有配重无刷交流振荡微电机的二级结构示意图；
图6是根据本发明一实施例的有配重无刷交流振荡微电机的内部结构示意图：
图7A是根据本发明一实施例的无刷交流振荡微电机的条形磁铁排列示意图；
图7B是沿图7A中A-A线的磁铁充磁剖视图；
图7C是沿图7A中B-B线的磁铁充磁剖视图；
图8A是根据本发明一实施例的无刷交流振荡微电机的不通电工作原理图；
图8B是根据本发明一实施例的无刷交流振荡微电机的正向通电工作原理图；
图8C是沿图8B中C-C线的剖视图；
图8D是沿图8B中D-D线的剖视图；
图8E是根据本发明一实施例的无刷交流振荡微电机的负向通电工作原理图；
图8F是沿图8E中C-C线的剖视图；
图8G是沿图8E中D-D线的剖视图；
图中：
1.轴
2.轴承
3.垫片
41.第一铁芯叠片
42.第二铁芯叠片
5.线圈
61.第一条形磁铁
62.第二条形磁铁
63.第三条形磁铁
64.第四条形磁铁
7.磁铁支架
8.壳套
9.底盖
10.配重铜套
11.上盖
12.上盖固定件
13.固定板
14.固定板固定件
15.导线引导通道
具体实施方式
以下将结合实施例和附图对本发明的构思、具体结构及产生的技术效果进行清楚、完整的描述，以充分地理解本发明的目的、方案和效果。需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互组合。附图中各处使用的相同的附图标记指示相同或相似的部分。
需要说明的是，如无特殊说明，当某一特征被称为“固定”、“连接”在另一个特征，它可以直接固定、连接在另一个特征上，也可以间接地固定、连接在另一个特征上。此外，本发明中所使用的上、下、左、右等描述仅仅是相对于附图中本发明各组成部分的相互位置关系来说的。
参照图1和2，其示出了根据本发明一实施例的无配重无刷交流振荡微电机的整体结构和内部结构示意图。根据该实施例，本发明的无刷交流振荡微电机包括：
转子，所述转子包括轴1、穿过轴1的第一铁芯叠片41和第二铁芯叠片42；
定子，所述定子包括穿过轴1且位于所述第一铁芯叠片41和所述第二铁芯叠片42中间的线圈5，以及环绕轴1、线圈5以及所述第一铁芯叠片41和所述第二铁芯叠片42的第一条形磁铁61、第二条形磁铁62、第三条形磁铁63以及第四条形磁铁64。
还包括：
用于固定条形磁铁61、62、63、64的磁铁支架7；
容纳转子和定子的壳套8；以及
安装于壳套8底端的底盖9，位于所述第一铁芯叠片41和所述第二铁芯叠片42两端的轴承2，以及位于所述第一铁芯叠片41和所述第二铁芯叠片42与所述轴承2之间的垫片3。
参照图3，其示出了根据本发明一实施例的无配重无刷交流振荡微电机的底盖剖面示意图。根据本发明的优选实施例，底盖9由绝缘材料制成，并且设置有两个导线引导通道15，以分别引出线圈5导线的两端。可以理解的是，本发明并不局限于电机底盖，本发明还可以根据不同的零件布置选择其它适当位置的电机外壳保留导线孔。
参照图4、5和6，其示出了根据本发明一实施例的有配重无刷交流振荡微电机的整体结构、二级结构和内部结构示意图。根据本发明的优选实施例，本发明的无刷交流振荡微电机还包括配重组件，所述配重组件包括：配重铜套10；用于容纳配重铜套10的上盖11；以及固定板13；其中，所述上盖11通过上盖固定件12固定于所述固定板13，以及其中，所述固定板13通过固定板固定件14固定于磁铁支架7。但是可以理解的是，本发明并不局限于此，本发明可根据不同需要选择不同的配重材料和结构。
参照图7A、7B和7C，其示出了根据本发明一实施例的无刷交流振荡微电机的条形磁铁排列示意图和充磁剖视图。根据本发明的优选实施例，每一条形磁铁61、62、63、64均包括磁铁顶部的第一区域、磁铁中部的第二区域及磁铁底部的第三区域，其中，所述第一区域和所述第三区域为充磁区域，充磁方向为径向，且所述第一区域和所述第三区域同一侧的极性相反，所述第二区域没有磁性，
其中，每一条形磁铁61、62、63、64的第一区域面向第一铁芯叠片41一侧的磁性与相邻条形磁铁61、62、63、64的第一区域面向第一铁芯叠片41一侧的磁性相反，以及每一条形磁铁61、62、63、64的第三区域面向第二铁芯叠片42一侧的磁性与相邻条形磁铁61、62、63、64的第三区域面向第二铁芯叠片42一侧的磁性相反。
根据本发明的优选实施例，所述无刷交流振荡微电机还包括与线圈5电连接的供电模块（未示出），用于向线圈5提供频率可控的交流电，从而能够根据所提供的交流电频率来控制电机振幅。
参照图8A，其示出了根据本发明一实施例的无刷交流振荡微电机的不通电工作原理图。不通电时，电机轴在齿槽力的作用下，第一铁芯叠片41、第二铁芯叠片42和轴1会一起固定在中间位置。
参照图8B，其示出了根据本发明一实施例的无刷交流振荡微电机的正向通电工作原理图。正向通电时，磁力线经线圈5中的轴1（铁芯作用），流向第二铁芯叠片42再经由条形磁铁62、63的第三区域，经过壳套8，到条形磁铁62、63的第一区域，然后经由第一铁芯叠片41，返回轴1，完成闭合环路；参照图8C，其示出了沿图8B中C-C线的剖视图。C-C剖面由于同性相斥，异性相吸，轴1由于第二铁芯叠片42的推动，会顺时针转动；参照图8D，其示出了沿图8B中D-D线的剖视图。D-D剖面由于同性相斥，异性相吸，轴1由于第一铁芯叠片41的推动，会顺时针转动；因此在通正向电时，轴1会向顺时针方向转动。
参照图8E，其示出了根据本发明一实施例的无刷交流振荡微电机的负向通电工作原理图。负向通电时，磁力线经线圈5中的轴1（铁芯作用），流向第一铁芯叠片41，再经由条形磁铁61、64的第一区域，经过壳套8，到条形磁铁61、64的第二区域，然后经由第二铁芯叠片42，返回轴1，完成闭合环路；参照图8F，其示出了沿图8E中C-C线的剖视图。C-C剖面由于同性相斥，异性相吸，轴1由于第二铁芯叠片42的推动，会逆时针转动；参照图8G，是沿图8E中D-D线的剖视图。D-D剖面由于同性相斥，异性相吸，轴1由于第一铁芯叠片41的推动，会逆时针转动；因此在通负向电时，轴1会向逆时针方向转动。
综上所述，在给电机通交流电时，随着电流方向的改变，铁芯叠片41、42会在中间线两侧来回摆动，从而带动轴1绕轴心以一定的角度往复转动。
以上所述，只是本发明的较佳实施例而已，本发明并不局限于上述实施方式，只要其以相同的手段达到本发明的技术效果，都应属于本发明的保护范围。在本发明的保护范围内其技术方案和/或实施方式可以有各种不同的修改和变化。

Claims (7)

  1. 一种无刷交流振荡微电机，其特征在于，包括：
    转子，所述转子包括轴（1）、穿过轴（1）的第一铁芯叠片（41）和第二铁芯叠片（42）；
    定子，所述定子包括穿过轴（1）且位于所述第一铁芯叠片（41）和所述第二铁芯叠片（42）中间的线圈（5），以及环绕轴（1）、线圈（5）以及所述第一铁芯叠片（41）和所述第二铁芯叠片（42）的第一条形磁铁（61）、第二条形磁铁（62）、第三条形磁铁（63）以及第四条形磁铁（64）。
  2. 根据权利要求1所述的无刷交流振荡微电机，其特征在于，每一条形磁铁（61、62、63、64）均包括磁铁顶部的第一区域、磁铁中部的第二区域及磁铁底部的第三区域，
    其中，所述第一区域和所述第三区域为充磁区域，充磁方向为径向，且所述第一区域和所述第三区域同一侧的极性相反，所述第二区域没有磁性，
    其中，每一条形磁铁（61、62、63、64）的第一区域面向第一铁芯叠片（41）一侧的磁性与相邻条形磁铁（61、62、63、64）的第一区域面向第一铁芯叠片（41）一侧的磁性相反，以及每一条形磁铁（61、62、63、64）的第三区域面向第二铁芯叠片（42）一侧的磁性与相邻条形磁铁（61、62、63、64）的第三区域面向第二铁芯叠片（42）一侧的磁性相反。
  3. 根据权利要求1或2所述的无刷交流振荡微电机，其特征在于，还包括：
    用于固定条形磁铁（61、62、63、64）的磁铁支架（7）；
    容纳转子和定子的壳套（8）；
    安装于壳套（8）底端的底盖（9）；
    位于所述第一铁芯叠片（41）和所述第二铁芯叠片（42）两端的轴承（2）；以及
    位于所述第一铁芯叠片（41）和所述第二铁芯叠片（42）与所述轴承（2）之间的垫片（3）。
  4. 根据权利要求3所述的无刷交流振荡微电机，其特征在于，所述底盖（9）由绝缘材料制成，并且设置有两个导线引导通道（15），以分别引出线圈（5）导线的两端。
  5. 根据权利要求3所述的无刷交流振荡微电机，其特征在于，还包括配重组件。
  6. 根据权利要求5所述的无刷交流振荡微电机，其特征在于，所述配重组件包括：
    配重铜套（10）；
    用于容纳配重铜套（10）的上盖（11）；以及
    固定板（13）；
    其中，所述上盖（11）通过上盖固定件（12）固定于所述固定板（13），以及其中，所述固定板（13）通过固定板固定件（14）固定于磁铁支架（7）。
  7. 根据权利要求1或2所述的无刷交流振荡微电机，其特征在于，还包括与线圈（5）连接的供电模块，用于向线圈（5）提供频率可控的交流电，从而能够根据所提供的交流电频率来控制电机振幅。
PCT/CN2017/104744 2017-04-13 2017-09-30 一种无刷交流振荡微电机 WO2018188284A1 (zh)

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