CN111342577A - Novel motor rotor end plate - Google Patents

Novel motor rotor end plate Download PDF

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Publication number
CN111342577A
CN111342577A CN202010107228.6A CN202010107228A CN111342577A CN 111342577 A CN111342577 A CN 111342577A CN 202010107228 A CN202010107228 A CN 202010107228A CN 111342577 A CN111342577 A CN 111342577A
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Prior art keywords
counterbore
end plate
counter bore
rotor end
motor rotor
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吴元强
宋建军
马燕
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Zhejiang Leapmotor Technology Co Ltd
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Zhejiang Leapmotor Technology Co Ltd
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Priority to CN202010107228.6A priority Critical patent/CN111342577A/en
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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K1/00Details of the magnetic circuit
    • H02K1/06Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22Rotating parts of the magnetic circuit
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K1/00Details of the magnetic circuit
    • H02K1/06Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22Rotating parts of the magnetic circuit
    • H02K1/28Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K7/00Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/04Balancing means

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
  • Manufacture Of Motors, Generators (AREA)

Abstract

本发明公开了一种新型电机转子端板,包括转子本体,转子本体的端面设有第一沉孔,第一沉孔与转子本体同轴设置,第一沉孔的底面上设有第二沉孔,第二沉孔与第一沉孔同轴设置,第二沉孔的侧壁第一沉孔的底面通过倒角过渡,第二沉孔底面中心设有通孔,所述通孔贯穿转子本体。本发明提供了一种新型电机转子端板,可以减小转子端板产生的湍流脉动,降低转子旋转阻力,优化气动噪声,同时减小端板质量。

Figure 202010107228

The invention discloses a novel motor rotor end plate, comprising a rotor body, the end face of the rotor body is provided with a first countersink, the first countersink is coaxial with the rotor body, and the bottom surface of the first counterbore is provided with a second countersink The second counterbore is coaxial with the first counterbore, the side wall of the second counterbore and the bottom surface of the first counterbore are transitioned through chamfering, and the center of the bottom surface of the second counterbore is provided with a through hole, which penetrates the rotor ontology. The invention provides a novel motor rotor end plate, which can reduce the turbulent pulsation generated by the rotor end plate, reduce the rotor rotation resistance, optimize the aerodynamic noise, and at the same time reduce the quality of the end plate.

Figure 202010107228

Description

一种新型电机转子端板A new type of motor rotor end plate

技术领域technical field

本发明涉及电机技术领域,尤其是涉及一种新型电机转子端板。The invention relates to the technical field of motors, in particular to a novel motor rotor end plate.

背景技术Background technique

转子端板是电机转子的主要零件,现有的电机转子端板设计没有考虑加强筋设计带来的湍流脉动,电机运行时加强筋“推动”周围空气运动,使得加强筋周围空气的气压突变,进而产生湍流脉动,容易产生较大风噪,且其声压频谱特性为宽频激励。现有的电机转子端板,在电机1000RPM~8000RPM升速时,电机侧0.6m处声压级达54dB(A)~73dB(A),端板周围会产生较大的湍流脉动,导致700Hz~5000Hz的宽频能量激励较大,不满足低噪声设计要求;且机转子端板设计时,转子端板质量为0.522kg,未考虑轻量化设计要求。因此需要设计一种新型电机转子端板,可以减小转子端板产生的湍流脉动,降低转子旋转阻力,优化气动噪声,同时减小端板质量。The rotor end plate is the main part of the motor rotor. The existing design of the rotor end plate of the motor does not consider the turbulent pulsation caused by the stiffener design. In turn, turbulent pulsation is generated, which is easy to generate large wind noise, and its sound pressure spectrum characteristics are broadband excitation. In the existing motor rotor end plate, when the motor is accelerated at 1000RPM~8000RPM, the sound pressure level at 0.6m from the motor side reaches 54dB(A)~73dB(A), and large turbulent pulsation will be generated around the end plate, resulting in 700Hz~ The 5000Hz broadband energy excitation is large, which does not meet the low noise design requirements; and when the rotor end plate of the machine is designed, the mass of the rotor end plate is 0.522kg, and the lightweight design requirements are not considered. Therefore, it is necessary to design a new type of motor rotor end plate, which can reduce the turbulent pulsation generated by the rotor end plate, reduce the rotor rotation resistance, optimize the aerodynamic noise, and reduce the quality of the end plate.

中国专利申请公开号CN102035276A,公开日为2011年04月27日,名称为“电机转子端板及其制作方法”,公开了了一种电机转子端板,该端板包括环形板体和齿压片。板体上开有与齿压片对应的定位孔,齿压片背面设有定位块,并置于板体的定位孔内紧配固定,环形板体和齿压片则通过点焊固定。本发明还公开了一种电机转子端板的制作方法,在环形板体上开设与齿压片对应的定位孔,并在齿压片背面设置相应的定位块,将定位块置于定位孔内进行齿压片的精确定位,从而不但有利于点焊的定位,而且还能够保证点焊的精度,增强了产品的可靠性。但是上述专利中的转子端板仍存在上述问题。Chinese Patent Application Publication No. CN102035276A, published on April 27, 2011, titled "Motor rotor end plate and its manufacturing method", discloses a motor rotor end plate, the end plate includes an annular plate body and a tooth pressure piece. The plate body is provided with a positioning hole corresponding to the tooth pressing piece, the back of the tooth pressing piece is provided with a positioning block, and is placed in the positioning hole of the plate body to be tightly fitted and fixed, and the annular plate body and the tooth pressing piece are fixed by spot welding. The invention also discloses a method for manufacturing a rotor end plate of a motor. The annular plate body is provided with positioning holes corresponding to the tooth pressing pieces, and corresponding positioning blocks are arranged on the back of the tooth pressing pieces, and the positioning blocks are placed in the positioning holes. The precise positioning of the tooth pressing sheet is not only conducive to the positioning of the spot welding, but also can ensure the accuracy of the spot welding and enhance the reliability of the product. However, the rotor end plate in the above patent still has the above problems.

发明内容SUMMARY OF THE INVENTION

本发明为了克服现有技术中电机转子端板噪音大的问题,提供一种新型电机转子端板,可以减小转子端板产生的湍流脉动,降低转子旋转阻力,优化气动噪声,同时减小端板质量。In order to overcome the problem of high noise of the motor rotor end plate in the prior art, the present invention provides a new type of motor rotor end plate, which can reduce the turbulent flow pulsation generated by the rotor end plate, reduce the rotational resistance of the rotor, optimize the aerodynamic noise, and reduce the end plate at the same time. board quality.

为了实现上述目的,本发明采用以下技术方案:In order to achieve the above object, the present invention adopts the following technical solutions:

一种新型电机转子端板,包括转子本体,转子本体的端面设有第一沉孔,第一沉孔与转子本体同轴设置,第一沉孔的底面上设有第二沉孔,第二沉孔与第一沉孔同轴设置,第二沉孔的侧壁第一沉孔的底面通过倒角过渡,第二沉孔底面中心设有通孔,所述通孔贯穿转子本体。A novel motor rotor end plate includes a rotor body, the end face of the rotor body is provided with a first countersink, the first countersink is coaxial with the rotor body, the bottom surface of the first counterbore is provided with a second countersink, the second countersunk The counterbore is coaxially arranged with the first counterbore, the side wall of the second counterbore and the bottom surface of the first counterbore are transitioned by chamfering, and the center of the bottom surface of the second counterbore is provided with a through hole which penetrates the rotor body.

上述优化后的电机转子端板,通过结构拓扑仿真,优化转子端板端面的两个沉孔直径,并增加倒角过渡,有效减小湍流脉动,降低转子旋转阻力,优化气动噪声,同时减小端板质量。The above optimized rotor end plate of the motor, through the structural topology simulation, optimizes the diameter of the two counterbore holes on the end face of the rotor end plate, and increases the chamfer transition, which effectively reduces the turbulent pulsation, reduces the rotational resistance of the rotor, optimizes the aerodynamic noise, and reduces the End plate quality.

作为优选,所述第一沉孔的直径为130.6mm,第二沉孔的90mm。上述直径为优化值,优化后端板质量为0.462kg。Preferably, the diameter of the first counterbore is 130.6mm, and the diameter of the second counterbore is 90mm. The above diameters are optimized values, and the optimized rear end plate mass is 0.462kg.

作为优选,所述倒角半径为5mm。Preferably, the chamfering radius is 5mm.

作为优选,所述第一沉孔到第二沉孔之间的底面为平面。所述平面设计,可以减少转子端板的湍流脉动,从而降低噪音和振动。Preferably, the bottom surface between the first counterbore to the second counterbore is a plane. The flat design can reduce the turbulent pulsation of the rotor end plate, thereby reducing noise and vibration.

作为优选,所述第一沉孔的底面上设有若干个第三沉孔,第三沉孔沿的第一沉孔轴线周向分布。所述结构可以降低转子端板的重量。Preferably, the bottom surface of the first counterbore is provided with a plurality of third counterbore, and the third counterbore is circumferentially distributed along the axis of the first counterbore. The structure can reduce the weight of the rotor end plate.

作为优选,所述第一沉孔的底面上设有若干个配重沉孔,配重沉孔沿的第一沉孔轴线周向分布。所述结构可以降低转子端板的重量,同时可以提高转子端板的动平衡性能。Preferably, the bottom surface of the first counterbore is provided with a number of counterweight counterbore, and the counterweight counterbore is circumferentially distributed along the axis of the first counterbore. The structure can reduce the weight of the rotor end plate, and at the same time can improve the dynamic balance performance of the rotor end plate.

作为优选,所述转子本体的另一个端面为平面。所述结构可降低端板附近区域湍流强度,减小转子旋转阻力,降低电机噪声。Preferably, the other end face of the rotor body is flat. The structure can reduce the turbulent flow intensity in the area near the end plate, reduce the rotational resistance of the rotor, and reduce the noise of the motor.

作为优选,所述第一沉孔的侧面为锥形斜面,锥形斜面靠近第一沉孔底面处的直径小于锥形斜面远离第一沉孔底面处的直径。所述结构可以使沉孔过渡更加平滑,降低端板附近区域湍流强度,减小转子旋转阻力,降低电机噪声。Preferably, the side surface of the first counterbore is a conical inclined surface, and the diameter of the conical inclined surface close to the bottom surface of the first counterbore is smaller than the diameter of the conical inclined surface away from the bottom surface of the first counterbore. The structure can make the transition of the counterbore smoother, reduce the turbulent flow intensity in the area near the end plate, reduce the rotational resistance of the rotor, and reduce the noise of the motor.

作为优选,所述第二沉孔的侧面为锥形斜面,锥形斜面靠近第二沉孔底面处的直径小于锥形斜面靠近第一沉孔底面处的直径。所述结构可以使沉孔过渡更加平滑,降低端板附近区域湍流强度,减小转子旋转阻力,降低电机噪声。Preferably, the side surface of the second counterbore is a conical inclined surface, and the diameter of the conical inclined surface close to the bottom surface of the second counterbore is smaller than the diameter of the conical inclined surface close to the bottom surface of the first counterbore. The structure can make the transition of the counterbore smoother, reduce the turbulent flow intensity in the area near the end plate, reduce the rotational resistance of the rotor, and reduce the noise of the motor.

本发明的有益效果是:可降低端板附近区域湍流强度,减小转子旋转阻力,降低电机噪声,改善宽频噪声频谱,提升电机声品质水平;同时减小端板质量,进一步实现轻量化、低成本需求。The beneficial effects of the invention are as follows: it can reduce the turbulent flow intensity in the area near the end plate, reduce the rotor rotation resistance, reduce the motor noise, improve the broadband noise spectrum, and improve the sound quality level of the motor; cost requirements.

附图说明Description of drawings

图1是本发明的结构示意图;Fig. 1 is the structural representation of the present invention;

图2是本发明中的剖视图。Fig. 2 is a cross-sectional view in the present invention.

图中:转子本体1、第一沉孔2、第二沉孔3、倒角4、通孔5、第三沉孔6、配重沉孔7。In the figure: rotor body 1 , first counterbore 2 , second counterbore 3 , chamfer 4 , through hole 5 , third counterbore 6 , counterweight counterbore 7 .

具体实施方式Detailed ways

下面结合附图和具体实施例对本发明做进一步的描述。The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

实施例1:Example 1:

如图1和图2所示,一种新型电机转子端板,包括转子本体1,转子本体1的端面为平面;转子本体1的另一个端面设有第一沉孔2,第一沉孔2的直径为130.6mm,第一沉孔2与转子本体1同轴设置;第一沉孔2的底面上设有第二沉孔3,第二沉孔3的90mm,第二沉孔3与第一沉孔2同轴设置,第一沉孔2到第二沉孔3之间的底面为平面;第二沉孔3的侧壁第一沉孔2的底面通过倒角4过渡,倒角4半径为5mm。第二沉孔3底面中心设有通孔5,所述通孔5贯穿转子本体1;第一沉孔2的底面上设有若干个第三沉孔6,第三沉孔6沿的第一沉孔2轴线周向分布;第一沉孔2的底面上设有若干个配重沉孔7,配重沉孔7沿的第一沉孔2轴线周向分布。所述第一沉孔2的侧面为锥形斜面,所述第一沉孔2的侧面为锥形斜面,锥形斜面靠近第一沉孔2底面处的直径小于锥形斜面远离第一沉孔2底面处的直径。锥形斜面靠近第二沉孔3底面处的直径小于锥形斜面靠近第一沉孔2底面处的直径。As shown in Figures 1 and 2, a new type of motor rotor end plate includes a rotor body 1, the end face of the rotor body 1 is a plane; the other end face of the rotor body 1 is provided with a first counterbore 2, the first counterbore 2 The diameter of the first counterbore 2 is 130.6mm, and the first counterbore 2 is arranged coaxially with the rotor body 1; the bottom surface of the first counterbore 2 is provided with a second counterbore 3, 90mm of the second counterbore 3, the second counterbore 3 and the first counterbore A counterbore 2 is coaxially arranged, and the bottom surface between the first counterbore 2 and the second counterbore 3 is a plane; the side wall of the second counterbore 3 and the bottom surface of the first counterbore 2 transition through the chamfer 4, and the chamfer 4 The radius is 5mm. The center of the bottom surface of the second counterbore 3 is provided with a through hole 5, which penetrates the rotor body 1; the bottom surface of the first counterbore 2 is provided with a number of third counterbores 6, The axis of the counterbore 2 is circumferentially distributed; the bottom surface of the first counterbore 2 is provided with a number of counterweight counterbore 7, and the counterweight counterbore 7 is distributed circumferentially along the axis of the first counterbore 2. The side surface of the first counterbore 2 is a conical inclined surface, the side surface of the first counterbore 2 is a conical inclined surface, and the diameter of the conical inclined surface close to the bottom surface of the first counterbore 2 is smaller than that of the conical inclined surface away from the first counterbore. 2 Diameter at the bottom surface. The diameter of the conical inclined surface close to the bottom surface of the second counterbore 3 is smaller than the diameter of the conical inclined surface close to the bottom surface of the first counterbore 2 .

本发明的有益效果是:可降低端板附近区域湍流强度,减小转子旋转阻力,降低电机噪声,改善宽频噪声频谱,提升电机声品质水平;同时减小端板质量,进一步实现轻量化、低成本需求。The beneficial effects of the invention are as follows: it can reduce the turbulent flow intensity in the area near the end plate, reduce the rotor rotation resistance, reduce the motor noise, improve the broadband noise spectrum, and improve the sound quality level of the motor; cost requirements.

Claims (9)

1. The utility model provides a novel motor rotor end plate, includes rotor body, characterized by, and rotor body's terminal surface is equipped with first counter bore, and first counter bore sets up with rotor body is coaxial, is equipped with the second counter bore on the bottom surface of first counter bore, and the second counter bore sets up with first counter bore is coaxial, and the underrun chamfer transition of the first counter bore of lateral wall of second counter bore, and second counter bore bottom surface center is equipped with the through-hole, the through-hole runs through rotor body.
2. The novel motor rotor end plate of claim 1, wherein the diameter of the first counter bore is 130.6mm, and the diameter of the second counter bore is 90 mm.
3. The new electric machine rotor end plate of claim 2, wherein said chamfer radius is 5 mm.
4. The novel motor rotor end plate of claim 1, wherein the bottom surface between the first counterbore and the second counterbore is a plane.
5. The novel motor rotor end plate as claimed in claim 1, 2, 3 or 4, wherein a plurality of third counter bores are arranged on the bottom surface of the first counter bore, and the third counter bores are distributed along the axis of the first counter bore in the circumferential direction.
6. The novel motor rotor end plate as claimed in claim 1, 2, 3 or 4, wherein a plurality of counter weight holes are formed in the bottom surface of the first counter weight hole, and are distributed along the axial direction of the first counter weight hole.
7. A novel motor rotor end plate according to claim 1 or 2 or 3 or 4, wherein the other end face of the rotor body is planar.
8. The novel motor rotor end plate of claim 1, 2, 3 or 4, wherein the side surface of the first counterbore is a tapered inclined surface, and the diameter of the tapered inclined surface close to the bottom surface of the first counterbore is smaller than the diameter of the tapered inclined surface far away from the bottom surface of the first counterbore.
9. The novel motor rotor end plate of claim 1, 2, 3 or 4, wherein the side surface of the second counterbore is a tapered inclined surface, and the diameter of the tapered inclined surface close to the bottom surface of the second counterbore is smaller than that of the tapered inclined surface close to the bottom surface of the first counterbore.
CN202010107228.6A 2020-02-21 2020-02-21 Novel motor rotor end plate Pending CN111342577A (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105914938A (en) * 2016-06-14 2016-08-31 江阴市澳盛动力设备有限公司 Counterweight support and motor applying the support
CN208518880U (en) * 2018-06-01 2019-02-19 南京金牛机械制造股份有限公司 A kind of rotor of engine oil pump
CN209016868U (en) * 2018-10-10 2019-06-21 华域汽车电动系统有限公司 A kind of rotor dynamic balancing plate
EP3540919A1 (en) * 2018-03-13 2019-09-18 Magneti Marelli S.p.A. Rotor for a rotary electric machine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105914938A (en) * 2016-06-14 2016-08-31 江阴市澳盛动力设备有限公司 Counterweight support and motor applying the support
EP3540919A1 (en) * 2018-03-13 2019-09-18 Magneti Marelli S.p.A. Rotor for a rotary electric machine
CN208518880U (en) * 2018-06-01 2019-02-19 南京金牛机械制造股份有限公司 A kind of rotor of engine oil pump
CN209016868U (en) * 2018-10-10 2019-06-21 华域汽车电动系统有限公司 A kind of rotor dynamic balancing plate

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Application publication date: 20200626