WO2019165864A1 - 带有扭转减震装置的电机转子及电机 - Google Patents

带有扭转减震装置的电机转子及电机 Download PDF

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Publication number
WO2019165864A1
WO2019165864A1 PCT/CN2019/072860 CN2019072860W WO2019165864A1 WO 2019165864 A1 WO2019165864 A1 WO 2019165864A1 CN 2019072860 W CN2019072860 W CN 2019072860W WO 2019165864 A1 WO2019165864 A1 WO 2019165864A1
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Prior art keywords
rotor
motor
shaft
damper device
motor shaft
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PCT/CN2019/072860
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English (en)
French (fr)
Inventor
林中尉
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南京好龙电子有限公司
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Publication of WO2019165864A1 publication Critical patent/WO2019165864A1/zh

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/24—Casings; Enclosures; Supports specially adapted for suppression or reduction of noise or vibrations
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
    • H02K11/21—Devices for sensing speed or position, or actuated thereby
    • 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
    • H02K1/28—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
    • H02K1/30—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures using intermediate parts, e.g. spiders

Definitions

  • the invention relates to an electric machine, in particular an electric machine rotor.
  • the motor includes a stator, a rotor and an end cover, and is an electromagnetic device that realizes electric energy conversion or transmission based on the law of electromagnetic induction.
  • the motor torque will fluctuate. After such fluctuation, the output will adversely affect the subsequent components, such as noise and impact damage. At the same time, such fluctuations will consume a certain amount of energy, resulting in wasted energy.
  • the installation of a torsional damper such as a coupling in the axial direction of the motor shaft can solve the problem of torque fluctuation, but there is a problem that the size of the mechanism is large.
  • An object of the present invention is to provide a motor rotor with a torsional damper device which has a compact structure and a stable output torque of a motor shaft and low fluctuation.
  • the motor rotor with the torsional damper device of the present invention comprises a motor shaft passing through the center of the rotor, and a damper device is arranged between the rotor and the motor shaft, and the rotor and the motor shaft pass through the damper The device transmits torque.
  • the motor shaft includes an output shaft for connecting to the load and a monitoring shaft for mounting the rotor position sensor; the monitoring shaft is fixedly coupled to the rotor; and the damping device is disposed between the rotor and the output shaft.
  • the rotor and the output shaft transmit torque through the damper device; the monitoring shaft is coaxial with the output shaft and is rotatable relative to the axis.
  • the damper device has an elastic member.
  • one of the two members of the damper device is provided with teeth extending in a groove extending in the radial direction of the rotor to the other member, the teeth and the groove being provided with elastic members on the circumferentially opposite inner wall of the rotor .
  • the invention also provides a motor with stable output torque, small fluctuation and small overall size.
  • the motor of the present invention comprises a stator, a rotor and an end cover.
  • the end cover is fixed at the end of the motor casing, and the rotor is the above-mentioned motor rotor with a torsional damper device, and the motor shaft is rotatably disposed on the end cover.
  • the motor shaft is rotatably disposed on the end cover.
  • it also includes a rotor position sensor that is attached to one end of the motor shaft.
  • Another motor according to the present invention comprises a stator, a rotor and an end cover.
  • the end cover is fixed at the end of the motor casing, and the rotor is the above-mentioned motor rotor with a torsional damper device, and the motor shaft is rotated and arranged at the end cover. on.
  • the rotor position sensor is attached to one end of the monitoring shaft.
  • the invention has the beneficial effects that the torque is transmitted between the motor shaft and the rotor through the damper device having the elastic member, so that the shock absorbing effect is achieved while achieving a small structural size.
  • the elastic member may be rubber, spring or the like.
  • the invention realizes a buffer device such as an elastic member disposed inside the rotor, and the output shaft is connected to the portion where the rotor generates torque through the buffer device, and the torsional vibration is achieved without increasing the length of the motor, so that the output torque is stable.
  • the output shaft and the monitoring shaft, the rotor and the output shaft are connected by a damping device for outputting torque; the monitoring shaft is rigidly connected with the rotor, so that the rotor position sensor on the monitoring shaft can accurately measure the position of the rotor. Not affected by the torsional vibration damper.
  • the rotor generally has only an outer portion within a certain thickness range within the outer cylindrical surface for seating the conductor or the permanent magnet, and the inner portion near the rotor axis is connected to the motor shaft for transmitting torque only, and the present invention is in the inner portion.
  • a torsional damping device is provided so that the damping effect is achieved while achieving a smaller structural size.
  • the main feature of the present invention is that a buffer device is disposed inside the rotor, and the output shaft is connected to the portion where the rotor generates torque through the buffer device, and the torsional vibration is achieved without increasing the length of the motor, so that the output torque is smooth.
  • the motor shaft can be integral or separate and can be any type of shaft, sleeve or the like having coaxial features.
  • FIG. 1 is a schematic view of a motor of Embodiment 1.
  • Fig. 2 is a cross-sectional view taken along line A-A of Fig. 1;
  • Embodiment 3 is a schematic view of a motor of Embodiment 2.
  • Fig. 4 is a cross-sectional view taken along line B-B of Fig. 3;
  • FIG. 1 and 2 comprising a housing 1, a stator 2 fixed to the inner circumference of the housing, an end cover 3 fixed at both ends of the housing, a rotor 4, a toothed sleeve 5, a motor shaft 6, an elastic member 7, and a rotor Position sensor 8.
  • the rotor 4, the toothed sleeve 5, the motor shaft 6, the elastic member 7, and the like form a motor rotor with a torsional damper.
  • the end caps are fixed at both ends of the motor housing.
  • the toothed sleeve 5 is uniformly distributed with a plurality of teeth 51 in the circumferential direction, and the toothed sleeve 5 is fixed to the motor shaft 6, or the toothed sleeve 5 and the motor shaft 6 are integrally formed.
  • the tooth 51 extends in the radial direction into a groove 41 opened in the inner circumference of the rotor, and an elastic member 7, such as rubber, is disposed between the tooth and the inner wall of the groove, and torque is transmitted between the rotor and the motor shaft through the elastic member.
  • Both ends of the motor shaft 6 are disposed on the two end caps 3 by bearing rotation.
  • the rotor position sensor 8 is fixed to one end of the motor shaft.
  • the motor shaft 6 includes an output shaft 61 for connection to a load and a monitoring shaft 62 for mounting the rotor position sensor 8; the monitoring shaft 62 and The rotor is fixedly connected.
  • the toothed sleeve 5 is fixed to the output shaft 61, or the toothed sleeve 5 and the output shaft 61 are of a unitary structure.
  • One end of the output shaft 61 is disposed on the monitoring shaft 62 by bearing rotation, and the other end is disposed on the one end cover by bearing rotation.
  • the other end of the monitoring shaft 62 is disposed on the other end cover 3 by bearing rotation.
  • the other structure is basically the same as that of the first embodiment.
  • the present invention is not limited by the form of the motor.
  • the motor may be a motor having a rotor such as various asynchronous motors, synchronous motors, or the like, and may be an inner rotor motor or an outer rotor motor.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)

Abstract

本发明提供一种结构小巧、电机轴的输出扭矩平稳、波动小的带有扭转减震装置的电机转子，它包括从转子的中心穿过的电机轴，转子和电机轴两个部件之间设有减震装置，转子与电机轴之间通过所述减震装置传递扭矩。本发明同时提供了一种输出扭矩平稳、波动小，整体尺寸小的电机，它包括定子、转子、端盖，端盖固定在电机壳体端部，转子为上述的带有扭转减震装置的电机转子，电机轴转动设置在端盖上。

Description

带有扭转减震装置的电机转子及电机 技术领域
本发明涉及电机，尤其是电机转子。
背景技术
电机包括定子、转子、端盖，是基于电磁感应定律实现电能转换或传递的一种电磁装置。在工作中，由于磁场变化的不均匀以及磁力分布不均匀等因素，会造成电机扭矩的波动，这种波动输出后，会给之后的零部件造成不利影响，例如：产生噪声、冲击损坏等，同时这种波动会消耗一定的能量，造成能源浪费。在电机轴的轴向安装扭转减震装置如联轴器可以解决扭矩波动问题，但是，存在机构尺寸较大的问题。
发明内容
本发明的目的是提供一种结构小巧、电机轴的输出扭矩平稳、波动小的带有扭转减震装置的电机转子。
本发明所述的带有扭转减震装置的电机转子，包括从转子的中心穿过的电机轴，转子和电机轴两个部件之间设置有减震装置，转子与电机轴通过所述减震装置传递扭矩。
上述的电机转子，电机轴包括用于与负载相连的输出轴和用于安装转子位置传感器的监测轴；监测轴与转子固定相连；转子和输出轴两个部件之间设置有所述减震装置，转子与输出轴通过所述减震装置传递扭矩；监测轴与输出轴同轴，并可以绕轴线相对转动。
上述的电机转子，减震装置具有弹性元件。优选，设置减震装置的两个部件中的一个部件上具有沿着转子径向方向延伸到另一个部件上所开的槽内的齿，齿与槽在转子周向相对的内壁上设置弹性元件。
本发明同时提供了一种输出扭矩平稳、波动小，整体尺寸小的电机。
本发明所述的电机，包括定子、转子、端盖，端盖固定在电机壳体端部，转子为上述的带有扭转减震装置的电机转子，电机轴转动设置在端盖上。最好，它还包括固定在电机轴的一端的转子位置传感器。
本发明所述的另一种电机，包括定子、转子、端盖，端盖固定在电机壳体端部，转子为上述的带有扭转减震装置的电机转子，电机轴转动设置在端盖上。最好，转子位置传感器固定在监测轴的一端。
本发明的有益效果：电机轴与转子之间通过具有弹性元件的减震装置传递扭矩，这样，既达到了减震效果，同时实现较小的结构尺寸。弹性元件可以是橡胶、弹簧等。本发明实现了在转子的内部设置弹性元件等缓冲装置，输出轴通过缓冲装置与转子产生扭矩的部分相连， 在不增加电机长度的基础上，实现扭转减震，使输出扭矩平稳。电机轴分为输出轴和监测轴两部分时，转子与输出轴之间通过减震装置相连用于输出扭矩；监测轴与转子刚性连接，这样监测轴上的转子位置传感器能够准确测量转子的位置，不受扭转减震装置的影响。
转子一般只有外圆柱面以内的一定厚度范围内的外侧部分，用于安放导体或永磁体，而靠近转子轴线的内侧部分与电机轴相连，则仅用于传递扭矩，本发明就是在这内侧部分设置扭转减震装置，这样，即达到了减震效果，同时实现较小的结构尺寸。
本发明的主要特征是在转子的内部，设置缓冲装置，输出轴通过缓冲装置与转子产生扭矩的部分相连，在不增加电机长度的基础上，实现扭转减震，使输出扭矩平稳。
电机轴可以是一体的或分体的，可以是任何具有同轴特征的轴、套等类型的结构。
由于有减震装置，通过设置在输出轴上的转子位置传感器判断转子磁场位置时会有偏差。为了消除这种偏差，可以通过设置与转子磁场同步转动的机构连接到传感器，或者通过传感器直接测量转子产生磁场的机械部分的角度位置，或者通过传感器测量与转子产生磁场的机械部分角度相固定的部分的角度位置。
附图说明
图1是实施例1的一种电机的示意图。
图2是图1的A-A剖视图。
图3是实施例2的一种电机的示意图。
图4是图3的B-B剖视图。
具体实施方式
实施例1：
参见图1、2所示的电机，包括壳体1、固定在壳体内周的定子2、固定在壳体两端的端盖3，转子4、齿套5、电机轴6、弹性元件7、转子位置传感器8。转子4、齿套5、电机轴6、弹性元件7等形成了带有扭转减震装置的电机转子。端盖固定在电机壳体两端。齿套5周向均布有多个齿51，齿套5固定在电机轴6上，或者齿套5与电机轴6是一体结构。齿51沿着径向方向延伸到转子内周上所开的槽41内，齿与槽的内壁之间设置弹性元件7，如橡胶，转子与电机轴之间通过所述弹性元件传递扭矩。电机轴6的两端通过轴承转动设置在两个端盖3上。转子位置传感器8固定在电机轴的一端。
实施例2：
参见图3、4所示的电机，其与实施例1的主要不同是：电机轴6包括用于与负载相连的输出轴61和用于安装转子位置传感器8的监测轴62；监测轴62与转子固定相连。齿套5固定在输出轴61上，或者齿套5与输出轴61是一体结构。输出轴61的一端通过轴承转动设置 在监测轴62上，另一端通过轴承转动设置在一端盖上。监测轴62的另一端通过轴承转动设置在另一个端盖3上。其他结构基本与实施例1相同。
本发明权利不受电机形式的约束，电机可以是各种异步电机、同步电机等具有转子的电机，可以是内转子电机，也可以是外转子电机。

Claims (8)

  1. 带有扭转减震装置的电机转子，包括从转子的中心穿过的电机轴，其特征是：转子和电机轴两个部件之间设置有减震装置，转子与电机轴通过所述减震装置传递扭矩。
  2. 如权利要求1所述的电机转子，其特征是：电机轴包括用于与负载相连的输出轴和用于安装转子位置传感器的监测轴；监测轴与转子固定相连；转子和输出轴两个部件之间设置有所述减震装置，转子与输出轴通过所述减震装置传递扭矩；监测轴与输出轴同轴，并可以绕轴线相对转动。
  3. 如权利要求1或2所述的电机转子，其特征是：减震装置具有弹性元件。
  4. 如权利要求3所述的电机转子，其特征是：设置减震装置的两个部件中的一个部件上具有沿着转子径向方向延伸到另一个部件上所开的槽内的齿，齿与槽在转子周向相对的内壁上设置弹性元件。
  5. 一种电机，包括定子、转子、端盖，端盖固定在电机壳体端部，其特征是：转子为权利要求1所述的带有扭转减震装置的电机转子，电机轴转动设置在端盖上。
  6. 如权利要求5所述的电机，其特征是：它还包括固定在电机轴的一端的转子位置传感器。
  7. 一种电机，包括定子、转子、端盖，端盖固定在电机壳体端部，其特征是：转子为权利要求2所述的带有扭转减震装置的电机转子，电机轴转动设置在端盖上。
  8. 如权利要求7所述的电机，其特征是：转子位置传感器固定在监测轴的一端。
PCT/CN2019/072860 2018-03-02 2019-01-23 带有扭转减震装置的电机转子及电机 WO2019165864A1 (zh)

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CN203071678U (zh) * 2012-12-30 2013-07-17 中山大洋电机股份有限公司 一种内嵌减震转子结构
CN204145111U (zh) * 2014-09-25 2015-02-04 广东威灵电机制造有限公司 减震转子和具有它的电机
CN204721143U (zh) * 2015-06-04 2015-10-21 常州朗奇威电器有限公司 一种减震转子或防电防腐蚀结构
CN108566030A (zh) * 2018-03-02 2018-09-21 南京好龙电子有限公司 带有扭转减震装置的电机转子及电机
CN207968171U (zh) * 2018-03-02 2018-10-12 南京好龙电子有限公司 带有扭转减震装置的电机转子及电机

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WO2024028251A1 (de) * 2022-08-05 2024-02-08 Vibracoustic Se Elektromotorrotoranordnung

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