WO2021092817A1 - 一种往复转动的电机 - Google Patents

一种往复转动的电机 Download PDF

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Publication number
WO2021092817A1
WO2021092817A1 PCT/CN2019/118255 CN2019118255W WO2021092817A1 WO 2021092817 A1 WO2021092817 A1 WO 2021092817A1 CN 2019118255 W CN2019118255 W CN 2019118255W WO 2021092817 A1 WO2021092817 A1 WO 2021092817A1
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Prior art keywords
magnet
motor
rotor assembly
end cover
movable
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PCT/CN2019/118255
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English (en)
French (fr)
Inventor
王小林
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广州市瑞宝电器有限公司
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Application filed by 广州市瑞宝电器有限公司 filed Critical 广州市瑞宝电器有限公司
Priority to PCT/CN2019/118255 priority Critical patent/WO2021092817A1/zh
Publication of WO2021092817A1 publication Critical patent/WO2021092817A1/zh

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/27—Rotor cores with permanent magnets
    • 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

Definitions

  • the present invention relates to the technical field of motors, in particular to a motor that can realize reciprocating rotation.
  • a coil spring In a reciprocating motor, a coil spring is used to support the commutation of the motor shaft during reciprocating rotation, which reduces the burden on the motor and shortens the commutation time.
  • the motor needs to connect the two ends of the coil spring to the motor housing and the rotating shaft respectively, and its assembly efficiency is low, and the rejection rate is high.
  • the coil spring In the high-frequency reciprocating rotation, the coil spring is easily fatigued and damaged, which affects its service life.
  • the present invention is proposed to provide a reciprocating motor that overcomes the above problems or at least partially solves the above problems.
  • the structure of the reciprocating motor includes:
  • the stator assembly is arranged on the inner surface of the motor housing;
  • a rotor assembly rotatably arranged in a space formed at the center of the stator assembly
  • An end cover which is coupled to the motor housing
  • the limit component is arranged in the space enclosed by the end cover and the motor housing; the limit component includes a first magnet arranged in a first position, a second magnet arranged in a second position, and can be rotated with the rotation of the rotor assembly A movable magnet that swings in the swing area between the first magnet and the second magnet, where the movable magnet and the magnetic poles of the first magnet and the second magnet in the same direction are opposed to each other;
  • the magnetic force between the rotor assembly, the movable magnet and the first magnet and the second magnet resets the rotating shaft of the rotor assembly to an intermediate position of reciprocating rotation when the motor is disconnected from the power supply.
  • the radial distances between the first magnet, the second magnet and the movable magnet and the axis of the rotating shaft are equal.
  • the magnetic force between the rotor assembly and the first magnet and the second magnet is equal.
  • the first magnet and the second magnet are fixed in a mounting hole formed in the end cover.
  • the limit assembly further includes a mounting base fixedly connected to the rotating shaft, and the movable magnet is fixed in the mounting through hole formed in the mounting base.
  • the mounting base is detachably fixed to the rotating shaft by screws.
  • the end cover is equipped with a bearing, and the rotating shaft of the rotor assembly passes through a shaft hole formed at the center of the inner ring of the bearing to be coupled to the outer side of the end cover.
  • the magnetic force between the rotor assembly, the movable magnet and the first and second magnets resets the shaft of the rotor assembly to the middle position of reciprocating rotation when the motor is disconnected from the power supply, thereby ensuring that the motor is powered off. Reset to center.
  • the magnetic force between the movable magnet and the first magnet and the second magnet can support the commutation of the rotating shaft of the motor, which reduces the burden of the motor, shortens the commutation time, and has a long service life of the motor.
  • Figure 1 is a cross-sectional view of an embodiment of a reciprocating motor of this application
  • Figure 2 is an assembly diagram of the rotor assembly, end cover, and limit assembly in Figure 1;
  • first and second are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with “first” and “second” may explicitly or implicitly include one or more of these features. In addition, the terms “including”, “including” and any variations thereof are intended to cover non-exclusive inclusions.
  • FIG. 1 shows an exemplary embodiment of a reciprocating motor according to the present invention.
  • the structure of the reciprocating motor includes a motor housing 1, a stator assembly, a rotor assembly, an end cover 2, and a limit assembly.
  • the motor housing 1 forms a front opening.
  • the stator assembly is arranged on the inner surface of the motor housing 1 and includes a stator 3 and an enameled wire 4, and the enameled wire 4 is wound around a winding slot of the stator 3 to form a winding group of each magnetic pole of the stator 3.
  • the stator assembly also includes insulating protective sleeves 5 sleeved on both ends of the stator 3.
  • the stator assembly may also be composed of a stator, an enameled wire, and a front insulating end cover and a rear insulating end cover whose legs are embedded in the winding groove of the stator.
  • the enameled wire is wound around the front insulating end cover, On the rear insulating end cover, a winding group of each magnetic pole of the stator is formed.
  • the stator assembly can also adopt other structures, which will not be described here.
  • the rotor assembly is rotatably arranged in a space formed at the center of the stator assembly, and includes a rotating shaft 6 and a rotating magnet 7 fixedly sleeved on the rotating shaft 6.
  • the rotor assembly may also be composed of a rotating shaft, a rotor sheet fixedly sleeved on the rotating shaft, and magnetic steel.
  • the rotor assembly can also adopt other structures, which will not be described here.
  • the end cover 2 is coupled with the front end of the motor housing 1.
  • a bearing 8 is installed in the bearing chamber of the end cover 2, and the output end of the rotating shaft 6 passes through a shaft hole formed at the center of the inner ring of the bearing 8 to be coupled to the outside of the end cover 2;
  • a bearing 8 is installed in the bearing chamber of the motor housing 1, and the other end of the rotating shaft 6 passes through a shaft hole formed at the center of the inner ring of the bearing 8.
  • the limiting component is arranged in the space enclosed by the end cover 2 and the motor housing 1.
  • the limiting component includes a first magnet 9 arranged in a first position, a second magnet 10 arranged in a second position, and a swing area that can be arranged between the first magnet 9 and the second magnet 10 as the rotor assembly rotates A swinging movable magnet 11, the magnetic poles of the movable magnet 11 and the first magnet 9 and the second magnet 10 in the same direction are opposite to each other.
  • the middle of the end cover 2 extends toward the side of the motor housing 1 to form an overall V-shaped support seat 12, the support seat 12 is formed with two mounting holes, the first magnet 9 , The second magnets 10 are respectively fixed to their respective mounting holes, for example, the first magnet 9 and the second magnet 10 are fixed to their respective mounting holes by means of screws, glue or interference fit.
  • the limiting component further includes a mounting seat 13 fixedly connected to the rotating shaft 6, and the movable magnet 11 is fixed in the mounting through hole formed in the mounting seat 13.
  • the rotating shaft 6 and the mounting seat 13 are movable
  • the magnet 11 and the installation through hole can be fixed by screws, glue or interference fit.
  • the magnetic poles of the movable magnet 11 and the first magnet 9 and the second magnet 10 in the same direction are opposite to each other, for example, the south pole (S pole) of the movable magnet 11 and the south pole (S pole) of the first magnet 9 are opposite to each other.
  • the north pole (N pole) of the second magnet 10 and the north pole (N pole) of the second magnet 10 are opposite to each other.
  • the magnetic potential energy between the movable magnet 11 and the first magnet 9 gradually increases , And the magnetic potential energy between the movable magnet 11 and the second magnet 10 gradually decreases, the magnetic potential energy between the movable magnet 11 and the first magnet 9 reaches the maximum at the commutation, and the magnetic potential energy promotes the reverse rotation of the shaft 6;
  • the magnetic potential energy between the movable magnet 11 and the second magnet 10 gradually increases, while the magnetic potential energy between the movable magnet 11 and the first magnet 9 gradually decreases.
  • the magnetic potential energy between the movable magnet 11 and the second magnet 10 reaches the maximum value at the reversal, and the magnetic potential energy promotes the reverse rotation of the rotating shaft 6. Therefore, the limit component realizes the commutation that supports the reciprocating rotation of the rotating shaft 6, reduces the burden on the motor, and shortens the commutation time.
  • the first magnet 9 and the second magnet 10 are completely the same, and the radial distances between the first magnet 9, the second magnet 10 and the movable magnet 11 and the axis of the rotating shaft 6 are equal. It should be understood that although the numbers of the first magnet 9, the second magnet 10, and the movable magnet 11 shown in FIG. 2 are all one, in fact, the number of the first magnet 9, the second magnet 10, and the movable magnet 11 can also be two. 3, 4, etc.
  • the magnetic force between the rotor assembly, the movable magnet 11 and the first magnet 9 and the second magnet 10 resets the rotating shaft 6 of the rotor assembly to an intermediate position of reciprocating rotation.
  • the magnetic force between the rotor assembly and the first magnet 9 and the second magnet 10 is equal, and the movable magnet 11 and the first magnet 9 and the second magnet 10 have the same magnetic force.
  • the magnetic force is equal.
  • the movable magnet 11 and the first magnet 9, the second magnet 10 when the motor is disconnected from the power supply, no matter where the shaft 6 is, it can be quickly reset to reciprocating rotation The middle position.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)

Abstract

本发明涉及一种往复转动的电机。所述电机包括电机外壳、定子组件、转子组件、端盖、限位组件；所述限位组件布置于端盖与电机外壳所包围的空间处；所述限位组件包含布置于第一位置的第一磁体，布置于第二位置的第二磁体，以及可随转子组件转动而于第一磁体、第二磁体之间的摆动区摆动的活动磁体，所述活动磁体与第一磁体、第二磁体的同向的磁极相互对置；所述转子组件、活动磁体与第一磁体、第二磁体之间的磁力使电机与电源断开连接时转子组件的转轴复位到往复转动的中间位置。活动磁体与第一磁体、第二磁体之间的磁力可支持电机的转轴在往复转动的换向，该方式减轻电机的负担，缩短换向时间，且电机使用寿命长。

Description

一种往复转动的电机 技术领域
本发明涉及电机技术领域，具体是涉及一种可实现往复转动的电机。
背景技术
在一种往复转动的电机中，其利用螺旋弹簧支持电机转轴在往复转动的换向，该方式减轻电机的负担，缩短换向时间。然而，该电机需将螺旋弹簧的两端分别与电机外壳、转轴固定连接，其装配效率低，废品率高，并且在高频率的往复转动中，螺旋弹簧容易疲劳损坏，影响使用寿命。
发明内容
鉴于上述问题，提出了本发明以便提供一种克服上述问题或者至少部分地解决上述问题的一种往复转动的电机。
所述往复转动的电机，其结构包括：
电机外壳；
定子组件，布置于所述电机外壳的内表面处；
转子组件，可转动地布置于形成在所述定子组件的中心处的空间；
端盖，与所述电机外壳耦接；
限位组件，布置于端盖与电机外壳所包围的空间处；所述限位组件包含布置于第一位置的第一磁体，布置于第二位置的第二磁体，以及可随转子组件转动而于第一磁体、第二磁体之间的摆动区摆动的活动磁体，所述活动磁体与第一磁体、第二磁体的同向的磁极相互对置；
所述转子组件、活动磁体与第一磁体、第二磁体之间的磁力使电机与电源断开连接时转子组件的转轴复位到往复转动的中间位置。
可选地，所述第一磁体、第二磁体、活动磁体与所述转轴的轴线的径向距离相等。
可选地，所述转子组件旋转到往复转动的中间位置时，转子组件与第一磁体、第二磁体之间的磁力相等。
可选地，所述第一磁体、第二磁体固定在形成于端盖的安装孔。
可选地，所述限位组件还包含与转轴固定连接的安装座，所述活动磁体固定在形成于安装座的安装通孔内。
可选地，所述安装座通过螺钉可拆卸地固定于转轴上。
可选地，所述端盖安装有轴承，转子组件的转轴穿过形成在所述轴承的内环中心处的轴孔与端盖的外侧耦接。
本发明具备以下有益效果：
在本实施例中，所述转子组件、活动磁体与第一磁体、第二磁体之间的磁力使电机与电源断开连接时转子组件的转轴复位到往复转动的中间位置，从而保证电机断电复位归中。活动磁体与第一磁体、第二磁体之间的磁力可支持电机的转轴在往复转动的换向，该方式减轻电机的负担，缩短换向时间，且电机使用寿命长。
附图说明
所包括的附图用来提供对本申请实施例的进一步的理解，其构成了说明书的一部分，用于例示本申请的实施方式，并与文字描述一起来阐释本申请的原理。显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。在附图中：
图1为本申请往复转动的电机其一实施例的剖视图；
图2为图1中转子组件、端盖、限位组件的装配图；
附图标记说明：1、电机外壳；2、端盖；3、定子；4、漆包线；5、保护套；6、转轴；7、旋转磁体；8、轴承；9、第一磁体；10、第二磁体；11、活动磁体；12、支承座；13、安装座。
具体实施方式
在本说明书中提到或者可能提到的上、下、左、右、前、后、内、外、顶、底等方位用语是相对于各附图中所示的构造进行定义的，它们是相对的概念，因此有可能会根据其所处不同位置、不同使用状态而进行相应地变化。所以，也不应当将这些或者其他的方位用语解释为限制性用语。
此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个该特征。另外，术语“包括”、“包含”及其任何变形，意图在于覆盖不排他的包含。
首先参见图1，其示出了根据本发明往复转动的电机的一种示例性实施例。参见图1，所述往复转动的电机，其结构包括电机外壳1、定子组件、转子组件、端盖2、限位组件。
其中，所述电机外壳1形成前端开口。
所述定子组件布置于所述电机外壳1的内表面处，其包含定子3、漆包线4，所述漆包线4缠绕于定子3的绕线槽以形成定子3各磁极的绕线组。所述定子组件还包含套接于定子3两端的绝缘的保护套5。在备选的实施方式中，所述定子组件还可以由定子、漆包线，以及腿部嵌入定子的绕线槽的前绝缘端罩、后绝缘端罩组成，所述漆包线缠绕于前绝缘端罩、后绝缘端罩上，形成定子各磁极的绕线组。当然，所述定子组件还可采用其它结构，在此不一一描述。
所述转子组件可转动地布置于形成在所述定子组件的中心处的空间，其包括转轴6、固定套接于转轴6上的旋转磁体7。在备选的实施方式中，所述转子组件还可以由转轴、以及固定套接于转轴上的转子片、磁钢组成。当然，所述转子组件还可采用其它结构，在此不一一描述。
所述端盖2与所述电机外壳1的前端耦接。本实施例中，所述端盖2的轴承室内安装有轴承8，所述转轴6的输出端穿过形成在所述轴承8的内环中心处的轴孔与端盖2的外侧耦接；所述电机外壳1的轴承室内安装有轴承8，所述转轴6的另一端穿过形成在所述轴承8的内环中心处的轴孔。
所述限位组件布置于端盖2与电机外壳1所包围的空间处。所述限位组件包含布置于第一位置的第一磁体9，布置于第二位置的第二磁体10，以及可随转子组件转动而于第一磁体9、第二磁体10之间的摆动区摆动的活动磁体11，所述活动磁体11与第一磁体9、第二磁体10的同向的磁极相互对置。
具体的，如图2所示，所述端盖2中部向电机外壳1一侧延伸形成有总体呈V型的支承座12，所述支承座12上形成两安装孔，所述第一磁体9、第二磁体10分别固定于各自安装孔，如通过螺钉、粘胶或采用过盈配合等方式将第一磁体9、第二磁体10固定于各自安装孔。
所述限位组件还包含与转轴6固定连接的安装座13，所述活动磁体11固定在形成于安装座13的安装通孔内，同样的，所述转轴6与安装座13之间，活动磁体11与安装通孔之间可以通过螺钉、粘胶或采用过盈配合等方式进行固定。
由于活动磁体11与第一磁体9、第二磁体10同向的磁极相互对置，如活动磁体11的南极(S极)与第一磁体9的南极(S极)相互对置，活动磁体11的北极(N极)与第二磁体10的北极(N极)相互对置，活动磁体11向第一磁体9靠近的过程中，活动磁体11与第一磁体9之 间的磁力势能逐渐增大，而活动磁体11与第二磁体10之间的磁力势能逐渐减少，在换向处活动磁体11与第一磁体9之间的磁力势能达到最大值，并且该磁力势能促进转轴6反向转动；同样的，活动磁体11向第二磁体10靠近的过程中，活动磁体11与第二磁体10之间的磁力势能逐渐增大，而活动磁体11与第一磁体9之间的磁力势能逐渐减少，在换向处活动磁体11与第二磁体10之间的磁力势能达到最大值，并且该磁力势能促进转轴6反向转动。从而，限位组件实现支持转轴6在往复转动的换向，减轻电机的负担，缩短换向时间。
优选地，所述第一磁体9、第二磁体10完全相同，并且所述第一磁体9、第二磁体10、活动磁体11与所述转轴6的轴线的径向距离相等。应当理解，虽然图2所示第一磁体9、第二磁体10、活动磁体11的数量均为一，但实际上第一磁体9、第二磁体10、活动磁体11的数量还可以为2、3、4等等。
当电机与电源断开连接时，所述转子组件、活动磁体11与第一磁体9、第二磁体10之间的磁力使转子组件的转轴6复位到往复转动的中间位置。具体的，所述转子组件旋转到往复转动的中间位置时，转子组件与第一磁体9、第二磁体10之间的磁力相等，活动磁体11与第一磁体9、第二磁体10之间的磁力相等，在转子组件、活动磁体11与第一磁体9、第二磁体10之间磁力的作用下，当电机与电源断开连接时，无论转轴6处于哪个位置，均可快速复位到往复转动的中间位置。
以上所述实施例仅表达了本发明的部分实施方式，其描述较为具体和详细，但并不能因此而理解为对本发明专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本发明构思的前提下，还可以做出若干变形和改进，这些都属于本发明的保护范围。因此，本发明专利的保护范围应以所附权利要求为准。

Claims (7)

  1. 一种往复转动的电机，其特征在于，包括：
    电机外壳；
    定子组件，布置于所述电机外壳的内表面处；
    转子组件，可转动地布置于形成在所述定子组件的中心处的空间；
    端盖，与所述电机外壳耦接；
    限位组件，布置于端盖与电机外壳所包围的空间处；所述限位组件包含布置于第一位置的第一磁体，布置于第二位置的第二磁体，以及可随转子组件转动而于第一磁体、第二磁体之间的摆动区摆动的活动磁体，所述活动磁体与第一磁体、第二磁体的同向的磁极相互对置；
    所述转子组件、活动磁体与第一磁体、第二磁体之间的磁力使电机与电源断开连接时转子组件的转轴复位到往复转动的中间位置。
  2. 根据权利要求1所述的往复转动的电机，其特征在于：所述第一磁体、第二磁体、活动磁体与所述转轴的轴线的径向距离相等。
  3. 根据权利要求2所述的往复转动的电机，其特征在于：所述转子组件旋转到往复转动的中间位置时，转子组件与第一磁体、第二磁体之间的磁力相等。
  4. 根据权利要求1所述的往复转动的电机，其特征在于：所述第一磁体、第二磁体固定在形成于端盖的安装孔。
  5. 根据权利要求1所述的往复转动的电机，其特征在于：所述限位组件还包含与转轴固定连接的安装座，所述活动磁体固定在形成于安装座的安装通孔内。
  6. 根据权利要求5所述的往复转动的电机，其特征在于：所述安装座通过螺钉可拆卸地固定于转轴上。
  7. 根据权利要求1所述的往复转动的电机，其特征在于：所述端盖安装有轴承，转子组件的转轴穿过形成在所述轴承的内环中心处的轴孔与端盖的外侧耦接。
PCT/CN2019/118255 2019-11-14 2019-11-14 一种往复转动的电机 WO2021092817A1 (zh)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0445733A1 (en) * 1990-03-05 1991-09-11 Ebara Corporation Spindle motor
CN1224892A (zh) * 1997-12-16 1999-08-04 三星电子株式会社 自补偿动态平衡装置
CN1241834A (zh) * 1998-07-10 2000-01-19 索尼公司 磁盘转动机构
CN202547831U (zh) * 2012-04-25 2012-11-21 杭州嘉拓科技有限公司 一种磁阻力测力传感系统
CN110266170A (zh) * 2019-07-17 2019-09-20 温州伏尔特电子科技有限公司 一种电动牙刷的振动马达

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0445733A1 (en) * 1990-03-05 1991-09-11 Ebara Corporation Spindle motor
CN1224892A (zh) * 1997-12-16 1999-08-04 三星电子株式会社 自补偿动态平衡装置
CN1241834A (zh) * 1998-07-10 2000-01-19 索尼公司 磁盘转动机构
CN202547831U (zh) * 2012-04-25 2012-11-21 杭州嘉拓科技有限公司 一种磁阻力测力传感系统
CN110266170A (zh) * 2019-07-17 2019-09-20 温州伏尔特电子科技有限公司 一种电动牙刷的振动马达

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