WO2020194382A1 - Rotor member, rotor, and rotating electric machine - Google Patents

Rotor member, rotor, and rotating electric machine Download PDF

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Publication number
WO2020194382A1
WO2020194382A1 PCT/JP2019/012115 JP2019012115W WO2020194382A1 WO 2020194382 A1 WO2020194382 A1 WO 2020194382A1 JP 2019012115 W JP2019012115 W JP 2019012115W WO 2020194382 A1 WO2020194382 A1 WO 2020194382A1
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WO
WIPO (PCT)
Prior art keywords
outer diameter
rotor
sleeve
permanent magnet
rotor member
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Application number
PCT/JP2019/012115
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French (fr)
Japanese (ja)
Inventor
勇樹 工藤
康太 梶原
聖悟 井口
允峰 楼
Original Assignee
三菱電機株式会社
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Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to PCT/JP2019/012115 priority Critical patent/WO2020194382A1/en
Publication of WO2020194382A1 publication Critical patent/WO2020194382A1/en

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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

Definitions

  • the present invention relates to a rotor member having a permanent magnet, a rotor equipped with the rotor member, and a rotary electric machine.
  • a reinforcing member is placed on the outer peripheral side of the permanent magnet in order to prevent the permanent magnet from scattering due to the centrifugal force generated during high-speed rotation. Furthermore, the permanent magnet is fixed by giving a tightening allowance to the permanent magnet so that the permanent magnet does not loosen during high-speed rotation.
  • a permanent magnet is arranged on the outer peripheral side of the sleeve whose inner peripheral side is a tapered surface, the outer peripheral side of the permanent magnet is covered with a reinforcing member, and the outer peripheral side is a tapered surface.
  • the rotating shaft is press-fitted into the sleeve.
  • the permanent magnets are divided in the circumferential direction in order to prevent the permanent magnets arranged on the outer peripheral side of the sleeve from cracking due to the expansion of the sleeve.
  • the sleeve has an outer diameter enlarged portion having an outer diameter larger than that of the outer peripheral surface on one end side of the sleeve in order to determine the position of the permanent magnet in the axial direction.
  • the present invention has been made in view of the above, and an object of the present invention is to obtain a rotor member that suppresses the occurrence of stress concentration on the end face of a permanent magnet.
  • the present invention has a sleeve having a cylindrical tubular surface portion and an outer diameter enlarged portion having an outer diameter enlarged portion on one end side of the tubular surface portion with respect to the outer peripheral surface of the tubular surface portion.
  • a plurality of permanent magnets arranged in a tubular shape on the outer peripheral side of the tubular surface portion of the sleeve, and a reinforcing member arranged on the outer peripheral side of the permanent magnets are provided.
  • the outer diameter of the outer diameter enlarged portion is equal to or larger than the outer diameter of the cylindrical shape formed by a plurality of permanent magnets.
  • the entire end face of the permanent magnet on the outer diameter enlarged portion side is in contact with the outer diameter enlarged portion.
  • the rotor member according to the present invention has the effect of suppressing the occurrence of stress concentration on the end face of the permanent magnet.
  • Schematic diagram showing a vertical cross section of the rotor member according to the first embodiment of the present invention Schematic diagram showing a cross section of the rotor member according to the first embodiment. Schematic diagram showing a vertical cross section of a modified example of the rotor member according to the first embodiment.
  • FIG. 1 is a schematic view showing a vertical cross section of the rotor member according to the first embodiment of the present invention.
  • FIG. 2 is a schematic view showing a cross section of the rotor member according to the first embodiment.
  • the rotor member 1 includes a sleeve 2 having a cylindrical cylindrical surface portion 2b and an outer diameter expanding portion 2a whose outer diameter is larger than that of the cylindrical surface portion 2b at one end, and a permanent magnet 3 divided into a plurality of parts in the circumferential direction. And a cylindrical reinforcing member 4 made of fiber reinforced plastic.
  • a plurality of permanent magnets 3 are arranged in a tubular shape on the outer peripheral side of the tubular surface portion 2b of the sleeve 2.
  • the outer diameter of the sleeve 2 in the outer diameter expanding portion 2a is equal to or larger than the outer diameter of the cylindrical shape formed by the plurality of permanent magnets 3.
  • the permanent magnet 3 is arranged so as to come into contact with the outer diameter expanding portion 2a of the sleeve 2.
  • the end surface 3a of the permanent magnet 3 on the outer diameter expanding portion 2a side is in contact with the outer diameter expanding portion 2a as a whole. Therefore, due to the difference in the coefficient of linear expansion between the permanent magnet 3 and the sleeve 2, when a temperature change occurs, pressure is applied to the entire end face 3a, so that stress concentration occurs on the end face 3a of the permanent magnet 3. Can be suppressed. Therefore, in the rotor member 1, the reliability of the strength of the permanent magnet 3 is improved.
  • the workability at the time of assembling the rotor member 1 can be improved and the manufacturing cost can be reduced.
  • FIG. 3 is a schematic view showing a vertical cross section of a modified example of the rotor member according to the first embodiment.
  • the outer diameter of the sleeve 2 in the outer diameter expanding portion 2a is set to be equal to or larger than the outer diameter of the reinforcing member 4, the reinforcing member 4 is wound around the tubular surface portion 2b of the sleeve 2 from above the permanent magnet 3, or the permanent magnet 3 is arranged.
  • the outer diameter expanding portion 2a can also be used for positioning the reinforcing member 4 by bringing the end portion of the reinforcing member 4 into contact with the end surface of the outer diameter expanding portion 2a. , Workability at the time of assembling the rotor member 1 is improved, and the manufacturing cost can be reduced.
  • FIG. 4 is a diagram showing a configuration of a rotary electric machine provided with a rotor using the rotor member according to the first embodiment.
  • the rotary electric machine 50 includes a rotor 11 and a stator 6.
  • the rotor 11 has a rotor member 1 and a shaft 10 press-fitted into the inner peripheral side of the sleeve 2.
  • the stator 6 has a stator core 7 made of a laminated steel plate and a coil 8 in which a lead wire is wound around the stator core 7. Since the rotary electric machine 50 according to the first embodiment rotates the rotor 11 by the magnetic field generated by energizing the coil 8, heat is generated at the time of driving. During high-speed rotation, the amount of heat generated by the rotating electric machine 50 increases because the current flowing through the coil 8 increases.
  • the end face 3a of the permanent magnet 3 is pushed by the outer diameter expanding portion 2a as the temperature rises, but the permanent magnet 3 has the end face 3a. Since pressure is applied to the entire surface, stress concentration does not occur on the end face 3a.
  • the rotary electric machine 50 according to the first embodiment can rotate at high speed because stress concentration does not occur on the end surface 3a of the permanent magnet 3 of the rotor member 1 even if the temperature rises. Further, since the rotor member 1 can be composed of the sleeve 2, the permanent magnet 3, and the reinforcing member 4, it is possible to suppress an increase in man-hours during manufacturing of the rotor member 1.
  • the motor efficiency can be improved by making the outer diameter of the sleeve 2 in the outer diameter expanding portion 2a smaller than the outer diameter of the reinforcing member 4.
  • FIG. 5 is a view showing a vertical cross section of the rotor member according to the second embodiment of the present invention.
  • the annular members 5a, 5b, 5c, and 5d which are the first annular members, are arranged between the outer diameter expanding portion 2a and the permanent magnet 3. It is different from the rotor member 1 according to the first embodiment.
  • the annular members 5a, 5b, 5c, and 5d are non-magnetic materials. Examples of the material of the annular members 5a, 5b, 5c, and 5d include, but are not limited to, stainless steel.
  • the outer diameters of the annular members 5a, 5b, 5c, and 5d are the same as the outer diameter of the cylindrical shape formed by the plurality of permanent magnets 3, and the reinforcing member 4 is only on the outer peripheral side of the cylindrical shape formed by the permanent magnets 3. It is also arranged on the outer peripheral side of the annular members 5a, 5b, 5c, and 5d.
  • the end surface 3a of the permanent magnet 3 on the outer diameter enlarged portion 2a side is entirely in contact with the annular member 5a. That is, the outer diameter of the outer diameter expanding portion 2a is equal to or larger than the outer diameter of the annular members 5a, 5b, 5c, and 5d.
  • FIG. 5 shows a structure in which the outer diameter of the outer diameter expanding portion 2a is larger than the outer diameter of the annular members 5a, 5b, 5c, and 5d, the outer diameter of the outer diameter expanding portion 2a is the annular member. It may be less than or equal to the outer diameter of 5a, 5b, 5c, 5d.
  • FIG. 6 is a diagram showing a configuration of a rotary electric machine provided with a rotor using the rotor member according to the second embodiment.
  • the rotary electric machine 50 includes a rotor 11 and a stator 6.
  • the rotor 11 has a rotor member 1 and a shaft 10 press-fitted into the inner peripheral side of the sleeve 2.
  • the stator 6 has a stator core 7 made of a laminated steel plate and a coil 8 in which a lead wire is wound around the stator core 7.
  • the spatial distance between the stator core 7 and the outer diameter expanding portion 2a is L2.
  • the rotary electric machine 50 provided with the rotor 11 using the rotor member 1 according to the first embodiment will be compared.
  • the rotary electric machine 50 provided with the rotor 11 using the rotor member 1 according to the first embodiment shown in FIG. 4 is fixed because the rotor member 1 does not include the annular members 5a, 5b, 5c, and 5d.
  • the space distance L1 between the child core 7 and the outer diameter expanding portion 2a is shorter than the space distance L2 between the stator core 7 and the outer diameter expanding portion 2a of the rotary electric machine 50 according to the second embodiment.
  • the rotor member 1 does not include the annular members 5a, 5b, 5c, and 5d, and the permanent magnet 3 and the outer diameter expanding portion 2a are in contact with each other.
  • the spatial distance from the outer diameter expanding portion 2a is zero.
  • FIG. 7 is a diagram showing a magnetic flux between the rotor and the stator using the rotor member according to the second embodiment.
  • FIG. 7 shows a cross section of the rotor 11 and the stator 6 on lines VII-VII in FIG.
  • FIG. 7 shows magnetic fluxes 9d, 9e, and 9f passing from the stator core 7 of the stator 6 to the outer diameter expanding portion 2a of the sleeve 2.
  • the magnetic fluxes 9d, 9e, and 9f indicate the magnetic flux generated in the portion of the space distance L2 where the distance between the stator core 7 and the outer diameter expanding portion 2a is the shortest in the plane including the central axis of the shaft 10.
  • FIG. 8 is a diagram showing magnetic flux between the rotor and the stator using the rotor member according to the first embodiment.
  • FIG. 8 shows a cross section of the rotor 11 and the stator 6 on line VIII-VIII in FIG.
  • FIG. 8 shows magnetic fluxes 9a, 9b, 9c passing from the stator core 7 of the stator 6 to the outer diameter expanding portion 2a of the sleeve 2.
  • the magnetic fluxes 9a, 9b, and 9c indicate the magnetic flux generated in the portion of the space distance L1 where the distance between the stator core 7 and the outer diameter expanding portion 2a is the shortest in the plane including the central axis of the shaft 10.
  • the magnetic fluxes 9a, 9b, 9c return from the stator 6 to the stator 6 through the outer diameter expanding portion 2a of the sleeve 2.
  • the arrows representing the magnetic fluxes 9a, 9b, 9c, 9d, 9e, and 9f indicate that the thicker the magnetic field, the stronger the magnetic field.
  • the rotor 11 using the rotor member 1 according to the second embodiment passes through the outer diameter expanding portion 2a of the sleeve 2 as compared with the rotor 11 using the rotor member 1 according to the first embodiment.
  • the magnetic flux returning to the stator 6 is weakened.
  • FIG. 9 is a diagram showing a magnetic flux between the rotor and the stator using the rotor member according to the second embodiment.
  • FIG. 10 is a diagram showing magnetic flux between the rotor and the stator using the rotor member according to the first embodiment.
  • 9 and 10 show cross sections of the rotor 11 and the stator 6 parallel to the axial direction of the shaft 10.
  • FIG. 9 shows the magnetic fluxes 9k, 9l, 9m, 9n from the permanent magnet 3 passing through the outer diameter expanding portion 2a of the sleeve 2.
  • the magnetic fluxes 9k, 9l, 9m, and 9n return from the permanent magnet 3 to the permanent magnet 3 through the outer diameter expanding portion 2a of the sleeve 2.
  • FIG. 9 shows the magnetic fluxes 9k, 9l, 9m, and 9n from the permanent magnet 3 passing through the outer diameter expanding portion 2a of the sleeve 2.
  • FIGS. 9 and 10 show magnetic fluxes 9g, 9h, 9i, 9j passing through the outer diameter expanding portion 2a of the sleeve 2 from the permanent magnet 3.
  • the magnetic fluxes 9g, 9h, 9i, and 9j return from the permanent magnet 3 to the permanent magnet 3 through the outer diameter expanding portion 2a of the sleeve 2.
  • the arrows representing the magnetic fluxes 9g, 9h, 9i, 9j, 9k, 9l, 9m, and 9n indicate that the thicker the magnetic field, the stronger the magnetic field.
  • the rotor 11 using the rotor member 1 according to the second embodiment has the outer diameter of the sleeve 2 from the permanent magnet 3 as compared with the rotor 11 using the rotor member 1 according to the first embodiment.
  • the magnetic flux that returns to the permanent magnet 3 through the enlarged portion 2a is weakened.
  • the annular members 5a, 5b, 5c, and 5d which are non-magnetic materials, are arranged between the outer diameter expanding portion 2a of the sleeve 2 and the permanent magnet 3 to form a stator.
  • the space distance between the 6 and the outer diameter expanding portion 2a of the sleeve 2 and the space distance between the permanent magnet 3 and the outer diameter expanding portion 2a of the sleeve 2 can be increased.
  • the outer diameter expanding portion 2a of the sleeve 2 Since the magnetic flux interlinking with the outer diameter expanding portion 2a of the sleeve 2 is reduced by increasing the spatial distance between the stator 6 and the outer diameter expanding portion 2a of the sleeve 2, the outer diameter expanding portion 2a of the sleeve 2 is used when the electric motor is driven. The generated loss can be reduced, and the heat generation of the rotor 11 can be reduced.
  • the space distance between the permanent magnet 3 and the outer diameter expanding portion 2a of the sleeve 2 By increasing the space distance between the permanent magnet 3 and the outer diameter expanding portion 2a of the sleeve 2, the circulating magnetic flux passing through the outer diameter expanding portion 2a of the permanent magnet 3 and the sleeve 2 is reduced, and the magnetic flux interlinking with the stator 6 is generated. As the number increases, the motor characteristics of the rotary electric machine 50 are improved.
  • the spatial distance between the stator 6 and the outer diameter expanding portion 2a of the sleeve 2 is increased or decreased by increasing or decreasing the number of the annular members 5a, 5b, 5c, 5d which are non-magnetic materials. , And the space distance between the permanent magnet 3 and the outer diameter expanding portion 2a of the sleeve 2 can be adjusted.
  • the annular members 5a, 5b, 5c, and 5d can be press-molded by forming them into thin plates, and the manufacturing cost can be reduced.
  • FIG. 11 is a schematic view showing a vertical cross section of the rotor member according to the third embodiment of the present invention.
  • the annular member 5e which is a second annular member, is arranged on the side opposite to the outer diameter expanding portion 2a of the sleeve 2 and covers the end surface 3b of the permanent magnet 3. ing.
  • the annular member 5e is a non-magnetic material. Other than this, it is the same as the rotor member 1 according to the first embodiment.
  • the rotor member 1 according to the third embodiment can be used for the rotor 11 and the rotary electric machine 50 in the same manner as the rotor member 1 according to the first embodiment.
  • the permanent magnet 3 arranged on the outer peripheral side of the sleeve 2 is reinforced by the outer peripheral surface of the sleeve 2, the outer diameter expanding portion 2a of the sleeve 2, and carbon fiber reinforced plastic.
  • the member 4 is sealed by the annular member 5e arranged on the side opposite to the outer diameter expanding portion 2a. Therefore, it is possible to prevent the permanent magnet 3 from being exposed to a corrosive atmosphere and chemicals from adhering to the permanent magnet 3, so that the environmental resistance can be improved.
  • FIG. 12 is a schematic view showing a vertical cross section of the rotor member according to the fourth embodiment of the present invention.
  • the annular member 5e which is a second annular member, is arranged on the side opposite to the outer diameter expanding portion 2a of the sleeve 2 and covers the end surface 3b of the permanent magnet 3. ing.
  • the rotor member 1 according to the fourth embodiment can be used for the rotor 11 and the rotary electric machine 50 in the same manner as the rotor member 1 according to the second embodiment.
  • annular member 5e By making the annular member 5e the same shape as the annular member 5a, 5b, 5c, 5d, it is possible to reduce the number of parts and the manufacturing cost.
  • the configuration shown in the above-described embodiment shows an example of the content of the present invention, can be combined with another known technique, and is one of the configurations without departing from the gist of the present invention. It is also possible to omit or change the part.
  • Rotor member 2 sleeve, 2a outer diameter expansion part, 2b cylinder surface part, 3 permanent magnet, 3a, 3b end face, 4 reinforcement member, 5a, 5b, 5c, 5d, 5e annular member, 6 stator, 7 fixing Child iron core, 8 coils, 9a, 9b, 9c, 9d, 9e, 9f, 9g, 9h, 9i, 9j, 9k, 9l, 9m, 9n magnetic flux, 10 shafts, 11 rotors, 50 rotors.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)

Abstract

This rotor member (1) is provoded with: a sleeve (2) having a cylindrical surface portion (2b) and having an outer diameter enlarged portion (2a) on one end side of the cylindrical surface portion (2b), said outer diameter enlarged portion (2a) having an outer diameter more enlarged than the outer circumferential surface of the cylindrical surface portion (2b); a plurality of permanent magnets (3) disposed in a cylindrical shape on the outer circumferential side of the cylindrical surface portion (2b) of the sleeve (2); and a reinforcing member (4) comprising a carbon fiber reinforced plastic disposed on the outer circumferential side of the permanent magnets (3). The outer diameter of the outer diameter enlarged portion (2a) is greater than or equal to the outer diameter of the cylindrical shape formed by the plurality of permanent magnets (3), and the entire end surfaces (3a) of the permanent magnets (3) on the outer diameter enlarged portion (2a) side make contact with the outer diameter enlarged portion (2a).

Description

回転子部材、回転子及び回転電機Rotor member, rotor and rotating electric machine
　本発明は、永久磁石を有する回転子部材並びにこの回転子部材を備えた回転子及び回転電機に関する。 The present invention relates to a rotor member having a permanent magnet, a rotor equipped with the rotor member, and a rotary electric machine.
　回転子に永久磁石を使用した電動機は、高速回転時に生じる遠心力によって永久磁石が飛散することを防ぐために、永久磁石の外周側に補強部材を配置している。さらに、高速回転時に永久磁石が緩まないよう、永久磁石に締め代を与えて永久磁石を固定している。 In an electric motor that uses a permanent magnet for the rotor, a reinforcing member is placed on the outer peripheral side of the permanent magnet in order to prevent the permanent magnet from scattering due to the centrifugal force generated during high-speed rotation. Furthermore, the permanent magnet is fixed by giving a tightening allowance to the permanent magnet so that the permanent magnet does not loosen during high-speed rotation.
　特許文献１に開示される回転電機の回転子部材は、内周側がテーパ面であるスリーブの外周側に永久磁石を配置し、永久磁石の外周側を補強部材で覆い、外周側がテーパ面である回転軸部をスリーブ内に圧入している。スリーブが径方向外側に膨張することで、高速回転時においても永久磁石が緩まないように大きな締め代を与えている。スリーブの膨張によってスリーブの外周側に配置された永久磁石が割れることを防ぐために、永久磁石は円周方向に分割されている。また、スリーブは、永久磁石の軸方向の位置を決めるために、スリーブの一端側には外周面よりも外径が拡大された外径拡大部を有している。 In the rotor member of the rotary electric machine disclosed in Patent Document 1, a permanent magnet is arranged on the outer peripheral side of the sleeve whose inner peripheral side is a tapered surface, the outer peripheral side of the permanent magnet is covered with a reinforcing member, and the outer peripheral side is a tapered surface. The rotating shaft is press-fitted into the sleeve. By expanding the sleeve outward in the radial direction, a large tightening allowance is provided so that the permanent magnet does not loosen even during high-speed rotation. The permanent magnets are divided in the circumferential direction in order to prevent the permanent magnets arranged on the outer peripheral side of the sleeve from cracking due to the expansion of the sleeve. Further, the sleeve has an outer diameter enlarged portion having an outer diameter larger than that of the outer peripheral surface on one end side of the sleeve in order to determine the position of the permanent magnet in the axial direction.
特開２０１４－２１２６８０号公報Japanese Unexamined Patent Publication No. 2014-21260
　しかしながら、特許文献１に開示される回転電機の回転子部材は、スリーブの外径拡大部に接触するように配置された永久磁石の端面の一部のみがスリーブの外径拡大部により覆われている構造である。永久磁石の線膨張係数よりもスリーブの線膨張係数の方が大きいことにより、温度上昇にともなって永久磁石の端面に外径拡大部の角部が食い込むように押され、永久磁石に応力集中が発生し、永久磁石が割れる懸念がある。 However, in the rotor member of the rotary electric machine disclosed in Patent Document 1, only a part of the end face of the permanent magnet arranged so as to be in contact with the outer diameter expanding portion of the sleeve is covered by the outer diameter expanding portion of the sleeve. It is a structure. Since the linear expansion coefficient of the sleeve is larger than the linear expansion coefficient of the permanent magnet, the corners of the outer diameter expansion part are pushed into the end face of the permanent magnet as the temperature rises, and stress concentration is concentrated on the permanent magnet. It may occur and the permanent magnet may break.
　本発明は、上記に鑑みてなされたものであって、永久磁石の端面に応力集中が発生することを抑制する回転子部材を得ることを目的とする。 The present invention has been made in view of the above, and an object of the present invention is to obtain a rotor member that suppresses the occurrence of stress concentration on the end face of a permanent magnet.
　上述した課題を解決し、目的を達成するために、本発明は、円筒状の筒面部及び筒面部の一端側に筒面部の外周面よりも外径が拡大された外径拡大部を有するスリーブと、スリーブの筒面部の外周側に筒状に配置された複数の永久磁石と、永久磁石の外周側に配置された補強部材とを備える。外径拡大部の外径は複数の永久磁石が形成する円筒形状の外径以上である。永久磁石の外径拡大部側の端面全体が外径拡大部に接触している。 In order to solve the above-mentioned problems and achieve the object, the present invention has a sleeve having a cylindrical tubular surface portion and an outer diameter enlarged portion having an outer diameter enlarged portion on one end side of the tubular surface portion with respect to the outer peripheral surface of the tubular surface portion. A plurality of permanent magnets arranged in a tubular shape on the outer peripheral side of the tubular surface portion of the sleeve, and a reinforcing member arranged on the outer peripheral side of the permanent magnets are provided. The outer diameter of the outer diameter enlarged portion is equal to or larger than the outer diameter of the cylindrical shape formed by a plurality of permanent magnets. The entire end face of the permanent magnet on the outer diameter enlarged portion side is in contact with the outer diameter enlarged portion.
　本発明に係る回転子部材は、永久磁石の端面に応力集中が発生することを抑制できるという効果を奏する。 The rotor member according to the present invention has the effect of suppressing the occurrence of stress concentration on the end face of the permanent magnet.
本発明の実施の形態１に係る回転子部材の縦断面を示す模式図Schematic diagram showing a vertical cross section of the rotor member according to the first embodiment of the present invention. 実施の形態１に係る回転子部材の横断面を示す模式図Schematic diagram showing a cross section of the rotor member according to the first embodiment. 実施の形態１に係る回転子部材の変形例の縦断面を示す模式図Schematic diagram showing a vertical cross section of a modified example of the rotor member according to the first embodiment. 実施の形態１に係る回転子部材を用いた回転子を備えた回転電機の構成を示す図The figure which shows the structure of the rotary electric machine provided with the rotor which used the rotor member which concerns on Embodiment 1. 本発明の実施の形態２に係る回転子部材の縦断面を示す図The figure which shows the vertical cross section of the rotor member which concerns on Embodiment 2 of this invention. 実施の形態２に係る回転子部材を用いた回転子を備えた回転電機の構成を示す図The figure which shows the structure of the rotary electric machine provided with the rotor which used the rotor member which concerns on Embodiment 2. 実施の形態２に係る回転子部材を用いた回転子と固定子との間での磁束を示す図The figure which shows the magnetic flux between a rotor and a stator using the rotor member which concerns on Embodiment 2. 実施の形態１に係る回転子部材を用いた回転子と固定子との間での磁束を示す図The figure which shows the magnetic flux between a rotor and a stator using the rotor member which concerns on Embodiment 1. 実施の形態２に係る回転子部材を用いた回転子と固定子との間での磁束を示す図The figure which shows the magnetic flux between a rotor and a stator using the rotor member which concerns on Embodiment 2. 実施の形態１に係る回転子部材を用いた回転子と固定子との間での磁束を示す図The figure which shows the magnetic flux between a rotor and a stator using the rotor member which concerns on Embodiment 1. 本発明の実施の形態３に係る回転子部材の縦断面を示す模式図Schematic diagram showing a vertical cross section of the rotor member according to the third embodiment of the present invention. 本発明の実施の形態４に係る回転子部材の縦断面を示す模式図Schematic diagram showing a vertical cross section of the rotor member according to the fourth embodiment of the present invention.
　以下に、本発明の実施の形態に係る回転子部材、回転子及び回転電機を図面に基づいて詳細に説明する。なお、この実施の形態によりこの発明が限定されるものではない。 The rotor member, rotor, and rotary electric machine according to the embodiment of the present invention will be described in detail below with reference to the drawings. The present invention is not limited to this embodiment.
実施の形態１．
　図１は、本発明の実施の形態１に係る回転子部材の縦断面を示す模式図である。図２は、実施の形態１に係る回転子部材の横断面を示す模式図である。回転子部材１は、円筒状の筒面部２ｂ及び筒面部２ｂよりも外径が拡大された外径拡大部２ａを一端部に有するスリーブ２と、円周方向において複数に分割された永久磁石３と、繊維強化プラスチックで形成された円筒状の補強部材４とを備える。ここでは永久磁石３が四つに分割された４極の構造を例とするが、永久磁石３は偶数個に分割された偶数極の構成であれば、分割数は任意である。永久磁石３は、スリーブ２の筒面部２ｂの外周側に複数個を並べて筒状に配置されている。外径拡大部２ａでのスリーブ２の外径は、複数の永久磁石３が形成する円筒形状の外径以上である。 Embodiment 1.
FIG. 1 is a schematic view showing a vertical cross section of the rotor member according to the first embodiment of the present invention. FIG. 2 is a schematic view showing a cross section of the rotor member according to the first embodiment. The rotor member 1 includes a sleeve 2 having a cylindrical cylindrical surface portion 2b and an outer diameter expanding portion 2a whose outer diameter is larger than that of the cylindrical surface portion 2b at one end, and a permanent magnet 3 divided into a plurality of parts in the circumferential direction. And a cylindrical reinforcing member 4 made of fiber reinforced plastic. Here, the structure of four poles in which the permanent magnet 3 is divided into four is taken as an example, but the number of divisions is arbitrary as long as the permanent magnet 3 has an even-numbered pole configuration divided into an even number. A plurality of permanent magnets 3 are arranged in a tubular shape on the outer peripheral side of the tubular surface portion 2b of the sleeve 2. The outer diameter of the sleeve 2 in the outer diameter expanding portion 2a is equal to or larger than the outer diameter of the cylindrical shape formed by the plurality of permanent magnets 3.
　永久磁石３は、スリーブ２の外径拡大部２ａに接触するように配置されている。永久磁石３の外径拡大部２ａ側の端面３ａは、全体が外径拡大部２ａに接触している。したがって、永久磁石３とスリーブ２との線膨張係数の違いに起因して、温度変化が生じた際に、端面３ａ全体に圧力が加えられるため、永久磁石３の端面３ａに応力集中が発生することを抑制できる。よって、回転子部材１においては、永久磁石３の強度の信頼性が向上する。 The permanent magnet 3 is arranged so as to come into contact with the outer diameter expanding portion 2a of the sleeve 2. The end surface 3a of the permanent magnet 3 on the outer diameter expanding portion 2a side is in contact with the outer diameter expanding portion 2a as a whole. Therefore, due to the difference in the coefficient of linear expansion between the permanent magnet 3 and the sleeve 2, when a temperature change occurs, pressure is applied to the entire end face 3a, so that stress concentration occurs on the end face 3a of the permanent magnet 3. Can be suppressed. Therefore, in the rotor member 1, the reliability of the strength of the permanent magnet 3 is improved.
　また、スリーブ２の外径拡大部２ａに対して補強部材４の外径寸法の精度を高める必要がないため、回転子部材１の組立時の作業性が向上し、製造コストを低減できる。 Further, since it is not necessary to improve the accuracy of the outer diameter dimension of the reinforcing member 4 with respect to the outer diameter expanding portion 2a of the sleeve 2, the workability at the time of assembling the rotor member 1 can be improved and the manufacturing cost can be reduced.
　図３は、実施の形態１に係る回転子部材の変形例の縦断面を示す模式図である。外径拡大部２ａでのスリーブ２の外径を補強部材４の外径以上にすると、補強部材４を永久磁石３の上からスリーブ２の筒面部２ｂに巻き付ける際、又は永久磁石３を配置したスリーブ２を補強部材４に挿入する際に、補強部材４の端部を外径拡大部２ａの端面に当接させることで外径拡大部２ａを補強部材４の位置決めにも用いることができるため、回転子部材１の組立時の作業性が向上し、製造コストを低減できる。 FIG. 3 is a schematic view showing a vertical cross section of a modified example of the rotor member according to the first embodiment. When the outer diameter of the sleeve 2 in the outer diameter expanding portion 2a is set to be equal to or larger than the outer diameter of the reinforcing member 4, the reinforcing member 4 is wound around the tubular surface portion 2b of the sleeve 2 from above the permanent magnet 3, or the permanent magnet 3 is arranged. When the sleeve 2 is inserted into the reinforcing member 4, the outer diameter expanding portion 2a can also be used for positioning the reinforcing member 4 by bringing the end portion of the reinforcing member 4 into contact with the end surface of the outer diameter expanding portion 2a. , Workability at the time of assembling the rotor member 1 is improved, and the manufacturing cost can be reduced.
　図４は、実施の形態１に係る回転子部材を用いた回転子を備えた回転電機の構成を示す図である。回転電機５０は、回転子１１と固定子６とを備える。回転子１１は、回転子部材１と、スリーブ２の内周側に圧入されたシャフト１０とを有する。固定子６は、積層鋼板からなる固定子鉄心７と固定子鉄心７に導線を巻き付けたコイル８とを有する。実施の形態１に係る回転電機５０は、コイル８への通電によって発生する磁界によって回転子１１を回転させるため、駆動時には熱を発生させる。高速回転時には、コイル８に流れる電流が大きくなるため、回転電機５０における発熱量は増大する。 FIG. 4 is a diagram showing a configuration of a rotary electric machine provided with a rotor using the rotor member according to the first embodiment. The rotary electric machine 50 includes a rotor 11 and a stator 6. The rotor 11 has a rotor member 1 and a shaft 10 press-fitted into the inner peripheral side of the sleeve 2. The stator 6 has a stator core 7 made of a laminated steel plate and a coil 8 in which a lead wire is wound around the stator core 7. Since the rotary electric machine 50 according to the first embodiment rotates the rotor 11 by the magnetic field generated by energizing the coil 8, heat is generated at the time of driving. During high-speed rotation, the amount of heat generated by the rotating electric machine 50 increases because the current flowing through the coil 8 increases.
　永久磁石３の線膨張係数よりもスリーブ２の線膨張係数の方が大きいことにより、温度上昇にともなって永久磁石３の端面３ａが外径拡大部２ａによって押されるが、永久磁石３は端面３ａ全体に圧力が加えられるため、端面３ａに応力集中は発生しない。実施の形態１に係る回転電機５０は、温度が上昇しても回転子部材１の永久磁石３の端面３ａに応力集中が発生しないため、高速回転が可能である。また、スリーブ２、永久磁石３及び補強部材４で回転子部材１を構成できるため、回転子部材１の製造時の工数の増加を抑えることができる。 Since the linear expansion coefficient of the sleeve 2 is larger than the linear expansion coefficient of the permanent magnet 3, the end face 3a of the permanent magnet 3 is pushed by the outer diameter expanding portion 2a as the temperature rises, but the permanent magnet 3 has the end face 3a. Since pressure is applied to the entire surface, stress concentration does not occur on the end face 3a. The rotary electric machine 50 according to the first embodiment can rotate at high speed because stress concentration does not occur on the end surface 3a of the permanent magnet 3 of the rotor member 1 even if the temperature rises. Further, since the rotor member 1 can be composed of the sleeve 2, the permanent magnet 3, and the reinforcing member 4, it is possible to suppress an increase in man-hours during manufacturing of the rotor member 1.
　なお、外径拡大部２ａでのスリーブ２の外径を大きくすると、回転電機５０を構成したときに外径拡大部２ａと永久磁石３との間を循環する磁束が多くなって損失が増大するため、図１に示したように外径拡大部２ａでのスリーブ２の外径を補強部材４の外径よりも小さくした方がモータ効率を高めることができる。 If the outer diameter of the sleeve 2 in the outer diameter expanding portion 2a is increased, the magnetic flux circulating between the outer diameter expanding portion 2a and the permanent magnet 3 increases when the rotary electric motor 50 is configured, and the loss increases. Therefore, as shown in FIG. 1, the motor efficiency can be improved by making the outer diameter of the sleeve 2 in the outer diameter expanding portion 2a smaller than the outer diameter of the reinforcing member 4.
実施の形態２．
　図５は、本発明の実施の形態２に係る回転子部材の縦断面を示す図である。実施の形態２に係る回転子部材１は、第１の円環状部材である円環状部材５ａ，５ｂ，５ｃ，５ｄが外径拡大部２ａと永久磁石３との間に配置されている点で実施の形態１に係る回転子部材１と相違している。円環状部材５ａ，５ｂ，５ｃ，５ｄは、非磁性体である。円環状部材５ａ，５ｂ，５ｃ，５ｄの材料には、ステンレス鋼を例示できるが、これには限定されない。円環状部材５ａ，５ｂ，５ｃ，５ｄの外径は複数の永久磁石３が形成する円筒形状の外径と同じであり、補強部材４は、永久磁石３が形成する円筒形状の外周側だけでなく、円環状部材５ａ，５ｂ，５ｃ，５ｄの外周側にも配置されている。永久磁石３の外径拡大部２ａ側の端面３ａは、全体が円環状部材５ａに接触している。すなわち、外径拡大部２ａの外径は円環状部材５ａ，５ｂ，５ｃ，５ｄの外径以上である。したがって、永久磁石３と円環状部材５ａ，５ｂ，５ｃ，５ｄとの線膨張係数の違いに起因して、温度変化が生じた際に、端面３ａ全体に圧力が加えられるため、永久磁石３の端面３ａに応力集中が発生することを抑制できる。なお、図５には、外径拡大部２ａの外径が円環状部材５ａ，５ｂ，５ｃ，５ｄの外径よりも大きい構造を示したが、外径拡大部２ａの外径は円環状部材５ａ，５ｂ，５ｃ，５ｄの外径以下であってもよい。ただし、外径拡大部２ａの外径が円環状部材５ａ，５ｂ，５ｃ，５ｄの外径よりも大きい構造の方が永久磁石３の端面３ａに応力集中が発生することを抑制する効果は大きい。 Embodiment 2.
FIG. 5 is a view showing a vertical cross section of the rotor member according to the second embodiment of the present invention. In the rotor member 1 according to the second embodiment, the annular members 5a, 5b, 5c, and 5d, which are the first annular members, are arranged between the outer diameter expanding portion 2a and the permanent magnet 3. It is different from the rotor member 1 according to the first embodiment. The annular members 5a, 5b, 5c, and 5d are non-magnetic materials. Examples of the material of the annular members 5a, 5b, 5c, and 5d include, but are not limited to, stainless steel. The outer diameters of the annular members 5a, 5b, 5c, and 5d are the same as the outer diameter of the cylindrical shape formed by the plurality of permanent magnets 3, and the reinforcing member 4 is only on the outer peripheral side of the cylindrical shape formed by the permanent magnets 3. It is also arranged on the outer peripheral side of the annular members 5a, 5b, 5c, and 5d. The end surface 3a of the permanent magnet 3 on the outer diameter enlarged portion 2a side is entirely in contact with the annular member 5a. That is, the outer diameter of the outer diameter expanding portion 2a is equal to or larger than the outer diameter of the annular members 5a, 5b, 5c, and 5d. Therefore, due to the difference in linear expansion coefficient between the permanent magnet 3 and the annular members 5a, 5b, 5c, and 5d, pressure is applied to the entire end face 3a when a temperature change occurs, so that the permanent magnet 3 It is possible to suppress the occurrence of stress concentration on the end face 3a. Although FIG. 5 shows a structure in which the outer diameter of the outer diameter expanding portion 2a is larger than the outer diameter of the annular members 5a, 5b, 5c, and 5d, the outer diameter of the outer diameter expanding portion 2a is the annular member. It may be less than or equal to the outer diameter of 5a, 5b, 5c, 5d. However, a structure in which the outer diameter of the outer diameter expanding portion 2a is larger than the outer diameter of the annular members 5a, 5b, 5c, and 5d is more effective in suppressing stress concentration from occurring on the end face 3a of the permanent magnet 3. ..
　図６は、実施の形態２に係る回転子部材を用いた回転子を備えた回転電機の構成を示す図である。回転電機５０は、回転子１１と固定子６とを備える。回転子１１は、回転子部材１と、スリーブ２の内周側に圧入されたシャフト１０とを有する。固定子６は、積層鋼板からなる固定子鉄心７と、固定子鉄心７に導線を巻き付けたコイル８とを有する。実施の形態２に係る回転電機５０は、固定子鉄心７と外径拡大部２ａとの空間距離がＬ２である。 FIG. 6 is a diagram showing a configuration of a rotary electric machine provided with a rotor using the rotor member according to the second embodiment. The rotary electric machine 50 includes a rotor 11 and a stator 6. The rotor 11 has a rotor member 1 and a shaft 10 press-fitted into the inner peripheral side of the sleeve 2. The stator 6 has a stator core 7 made of a laminated steel plate and a coil 8 in which a lead wire is wound around the stator core 7. In the rotary electric machine 50 according to the second embodiment, the spatial distance between the stator core 7 and the outer diameter expanding portion 2a is L2.
　円環状部材５ａ，５ｂ，５ｃ，５ｄの効果を説明するにあたって、実施の形態１に係る回転子部材１を用いた回転子１１を備えた回転電機５０を比較対象とする。図４に示した実施の形態１に係る回転子部材１を用いた回転子１１を備えた回転電機５０は、回転子部材１が円環状部材５ａ，５ｂ，５ｃ，５ｄを備えないため、固定子鉄心７と外径拡大部２ａとの空間距離Ｌ１は、実施の形態２に係る回転電機５０の固定子鉄心７と外径拡大部２ａとの空間距離Ｌ２よりも短くなる。また、実施の形態１に係る回転子部材１は、円環状部材５ａ，５ｂ，５ｃ，５ｄを備えておらず永久磁石３と外径拡大部２ａとが接触しているため、永久磁石３と外径拡大部２ａとの空間距離はゼロである。 In explaining the effects of the annular members 5a, 5b, 5c, and 5d, the rotary electric machine 50 provided with the rotor 11 using the rotor member 1 according to the first embodiment will be compared. The rotary electric machine 50 provided with the rotor 11 using the rotor member 1 according to the first embodiment shown in FIG. 4 is fixed because the rotor member 1 does not include the annular members 5a, 5b, 5c, and 5d. The space distance L1 between the child core 7 and the outer diameter expanding portion 2a is shorter than the space distance L2 between the stator core 7 and the outer diameter expanding portion 2a of the rotary electric machine 50 according to the second embodiment. Further, the rotor member 1 according to the first embodiment does not include the annular members 5a, 5b, 5c, and 5d, and the permanent magnet 3 and the outer diameter expanding portion 2a are in contact with each other. The spatial distance from the outer diameter expanding portion 2a is zero.
　図７は、実施の形態２に係る回転子部材を用いた回転子と固定子との間での磁束を示す図である。図７は、図６中のVII-VII線での回転子１１及び固定子６の断面を示している。図７は、固定子６の固定子鉄心７から、スリーブ２の外径拡大部２ａを通る磁束９ｄ，９ｅ，９ｆを示す。磁束９ｄ，９ｅ，９ｆは、シャフト１０の中心軸を含む平面において固定子鉄心７と外径拡大部２ａとの距離が最短となる空間距離Ｌ２の部分に発生する磁束を示している。磁束９ｄ，９ｅ，９ｆは、固定子６からスリーブ２の外径拡大部２ａを通って固定子６に戻る。図８は、実施の形態１に係る回転子部材を用いた回転子と固定子との間での磁束を示す図である。図８は、図４中のVIII-VIII線での回転子１１及び固定子６の断面を示している。図８は、固定子６の固定子鉄心７から、スリーブ２の外径拡大部２ａを通る磁束９ａ，９ｂ，９ｃを示す。磁束９ａ，９ｂ，９ｃは、シャフト１０の中心軸を含む平面において固定子鉄心７と外径拡大部２ａとの距離が最短となる空間距離Ｌ１の部分に発生する磁束を示している。磁束９ａ，９ｂ，９ｃは、固定子６から、スリーブ２の外径拡大部２ａを通って固定子６に戻る。図７及び図８において、磁束９ａ，９ｂ，９ｃ，９ｄ，９ｅ，９ｆを表す矢印は、太いほど磁界が強いことを示している。すなわち、実施の形態２に係る回転子部材１を用いた回転子１１は、実施の形態１に係る回転子部材１を用いた回転子１１と比較すると、スリーブ２の外径拡大部２ａを通って固定子６に戻る磁束が弱くなっている。 FIG. 7 is a diagram showing a magnetic flux between the rotor and the stator using the rotor member according to the second embodiment. FIG. 7 shows a cross section of the rotor 11 and the stator 6 on lines VII-VII in FIG. FIG. 7 shows magnetic fluxes 9d, 9e, and 9f passing from the stator core 7 of the stator 6 to the outer diameter expanding portion 2a of the sleeve 2. The magnetic fluxes 9d, 9e, and 9f indicate the magnetic flux generated in the portion of the space distance L2 where the distance between the stator core 7 and the outer diameter expanding portion 2a is the shortest in the plane including the central axis of the shaft 10. The magnetic fluxes 9d, 9e, and 9f return from the stator 6 to the stator 6 through the outer diameter expanding portion 2a of the sleeve 2. FIG. 8 is a diagram showing magnetic flux between the rotor and the stator using the rotor member according to the first embodiment. FIG. 8 shows a cross section of the rotor 11 and the stator 6 on line VIII-VIII in FIG. FIG. 8 shows magnetic fluxes 9a, 9b, 9c passing from the stator core 7 of the stator 6 to the outer diameter expanding portion 2a of the sleeve 2. The magnetic fluxes 9a, 9b, and 9c indicate the magnetic flux generated in the portion of the space distance L1 where the distance between the stator core 7 and the outer diameter expanding portion 2a is the shortest in the plane including the central axis of the shaft 10. The magnetic fluxes 9a, 9b, 9c return from the stator 6 to the stator 6 through the outer diameter expanding portion 2a of the sleeve 2. In FIGS. 7 and 8, the arrows representing the magnetic fluxes 9a, 9b, 9c, 9d, 9e, and 9f indicate that the thicker the magnetic field, the stronger the magnetic field. That is, the rotor 11 using the rotor member 1 according to the second embodiment passes through the outer diameter expanding portion 2a of the sleeve 2 as compared with the rotor 11 using the rotor member 1 according to the first embodiment. The magnetic flux returning to the stator 6 is weakened.
　図９は、実施の形態２に係る回転子部材を用いた回転子と固定子との間での磁束を示す図である。図１０は、実施の形態１に係る回転子部材を用いた回転子と固定子との間での磁束を示す図である。図９及び図１０は、シャフト１０の軸方向に平行な回転子１１及び固定子６の断面を示している。図９は、永久磁石３から、スリーブ２の外径拡大部２ａを通る磁束９ｋ，９ｌ，９ｍ，９ｎを示す。磁束９ｋ，９ｌ，９ｍ，９ｎは、永久磁石３から、スリーブ２の外径拡大部２ａを通って永久磁石３に戻る。図１０は、永久磁石３から、スリーブ２の外径拡大部２ａを通る磁束９ｇ，９ｈ，９ｉ，９ｊを示す。磁束９ｇ，９ｈ，９ｉ，９ｊは、永久磁石３から、スリーブ２の外径拡大部２ａを通って永久磁石３に戻る。図９及び図１０において、磁束９ｇ，９ｈ，９ｉ，９ｊ，９ｋ，９ｌ，９ｍ，９ｎを表す矢印は、太いほど磁界が強いことを示している。すなわち、実施の形態２に係る回転子部材１を用いた回転子１１は、実施の形態１に係る回転子部材１を用いた回転子１１と比較すると、永久磁石３から、スリーブ２の外径拡大部２ａを通って永久磁石３に戻る磁束が弱くなっている。 FIG. 9 is a diagram showing a magnetic flux between the rotor and the stator using the rotor member according to the second embodiment. FIG. 10 is a diagram showing magnetic flux between the rotor and the stator using the rotor member according to the first embodiment. 9 and 10 show cross sections of the rotor 11 and the stator 6 parallel to the axial direction of the shaft 10. FIG. 9 shows the magnetic fluxes 9k, 9l, 9m, 9n from the permanent magnet 3 passing through the outer diameter expanding portion 2a of the sleeve 2. The magnetic fluxes 9k, 9l, 9m, and 9n return from the permanent magnet 3 to the permanent magnet 3 through the outer diameter expanding portion 2a of the sleeve 2. FIG. 10 shows magnetic fluxes 9g, 9h, 9i, 9j passing through the outer diameter expanding portion 2a of the sleeve 2 from the permanent magnet 3. The magnetic fluxes 9g, 9h, 9i, and 9j return from the permanent magnet 3 to the permanent magnet 3 through the outer diameter expanding portion 2a of the sleeve 2. In FIGS. 9 and 10, the arrows representing the magnetic fluxes 9g, 9h, 9i, 9j, 9k, 9l, 9m, and 9n indicate that the thicker the magnetic field, the stronger the magnetic field. That is, the rotor 11 using the rotor member 1 according to the second embodiment has the outer diameter of the sleeve 2 from the permanent magnet 3 as compared with the rotor 11 using the rotor member 1 according to the first embodiment. The magnetic flux that returns to the permanent magnet 3 through the enlarged portion 2a is weakened.
　実施の形態２に係る回転子部材１は、非磁性体である円環状部材５ａ，５ｂ，５ｃ，５ｄがスリーブ２の外径拡大部２ａと永久磁石３の間に配置されることで固定子６とスリーブ２の外径拡大部２ａとの空間距離、及び永久磁石３とスリーブ２の外径拡大部２ａとの空間距離を広げることができる。固定子６とスリーブ２の外径拡大部２ａとの空間距離が広がることでスリーブ２の外径拡大部２ａに鎖交する磁束が減少するため、電動機駆動時にスリーブ２の外径拡大部２ａで発生する損失が減少し、回転子１１の発熱を低減することができる。永久磁石３とスリーブ２の外径拡大部２ａとの空間距離が広がることで永久磁石３及びスリーブ２の外径拡大部２ａを通る循環磁束が減少して、固定子６に鎖交する磁束が増えるため、回転電機５０の電動機特性が向上する。 In the rotor member 1 according to the second embodiment, the annular members 5a, 5b, 5c, and 5d, which are non-magnetic materials, are arranged between the outer diameter expanding portion 2a of the sleeve 2 and the permanent magnet 3 to form a stator. The space distance between the 6 and the outer diameter expanding portion 2a of the sleeve 2 and the space distance between the permanent magnet 3 and the outer diameter expanding portion 2a of the sleeve 2 can be increased. Since the magnetic flux interlinking with the outer diameter expanding portion 2a of the sleeve 2 is reduced by increasing the spatial distance between the stator 6 and the outer diameter expanding portion 2a of the sleeve 2, the outer diameter expanding portion 2a of the sleeve 2 is used when the electric motor is driven. The generated loss can be reduced, and the heat generation of the rotor 11 can be reduced. By increasing the space distance between the permanent magnet 3 and the outer diameter expanding portion 2a of the sleeve 2, the circulating magnetic flux passing through the outer diameter expanding portion 2a of the permanent magnet 3 and the sleeve 2 is reduced, and the magnetic flux interlinking with the stator 6 is generated. As the number increases, the motor characteristics of the rotary electric machine 50 are improved.
　実施の形態２に係る回転子部材１は、非磁性体である円環状部材５ａ，５ｂ，５ｃ，５ｄの枚数を増減することで固定子６とスリーブ２の外径拡大部２ａとの空間距離、及び永久磁石３とスリーブ２の外径拡大部２ａとの空間距離を調整することができる。 In the rotor member 1 according to the second embodiment, the spatial distance between the stator 6 and the outer diameter expanding portion 2a of the sleeve 2 is increased or decreased by increasing or decreasing the number of the annular members 5a, 5b, 5c, 5d which are non-magnetic materials. , And the space distance between the permanent magnet 3 and the outer diameter expanding portion 2a of the sleeve 2 can be adjusted.
　円環状部材５ａ，５ｂ，５ｃ，５ｄは、薄板状とすることによりプレス成型が可能となり、製作コストの低減が可能である。 The annular members 5a, 5b, 5c, and 5d can be press-molded by forming them into thin plates, and the manufacturing cost can be reduced.
実施の形態３．
　図１１は、本発明の実施の形態３に係る回転子部材の縦断面を示す模式図である。実施の形態３に係る回転子部材１は、スリーブ２の外径拡大部２ａとは反対側に第２の円環状部材である円環状部材５ｅが配置されており永久磁石３の端面３ｂを覆っている。円環状部材５ｅは、非磁性体である。この他は、実施の形態１に係る回転子部材１と同様である。また、実施の形態３に係る回転子部材１は、実施の形態１に係る回転子部材１と同様に、回転子１１及び回転電機５０に用いることができる。 Embodiment 3.
FIG. 11 is a schematic view showing a vertical cross section of the rotor member according to the third embodiment of the present invention. In the rotor member 1 according to the third embodiment, the annular member 5e, which is a second annular member, is arranged on the side opposite to the outer diameter expanding portion 2a of the sleeve 2 and covers the end surface 3b of the permanent magnet 3. ing. The annular member 5e is a non-magnetic material. Other than this, it is the same as the rotor member 1 according to the first embodiment. Further, the rotor member 1 according to the third embodiment can be used for the rotor 11 and the rotary electric machine 50 in the same manner as the rotor member 1 according to the first embodiment.
　実施の形態３に係る回転子部材１においては、スリーブ２の外周側に配置された永久磁石３は、スリーブ２の外周面とスリーブ２の外径拡大部２ａと、炭素繊維強化プラスチックからなる補強部材４と、外径拡大部２ａとは反対側に配置された円環状部材５ｅとにより密閉される。したがって、永久磁石３が腐食性の雰囲気にさらされたり、永久磁石３に薬品が付着したりすることを防止できるため、耐環境性を向上させることができる。 In the rotor member 1 according to the third embodiment, the permanent magnet 3 arranged on the outer peripheral side of the sleeve 2 is reinforced by the outer peripheral surface of the sleeve 2, the outer diameter expanding portion 2a of the sleeve 2, and carbon fiber reinforced plastic. The member 4 is sealed by the annular member 5e arranged on the side opposite to the outer diameter expanding portion 2a. Therefore, it is possible to prevent the permanent magnet 3 from being exposed to a corrosive atmosphere and chemicals from adhering to the permanent magnet 3, so that the environmental resistance can be improved.
実施の形態４．
　図１２は、本発明の実施の形態４に係る回転子部材の縦断面を示す模式図である。実施の形態４に係る回転子部材１は、スリーブ２の外径拡大部２ａとは反対側に第２の円環状部材である円環状部材５ｅが配置されており永久磁石３の端面３ｂを覆っている。この他は、実施の形態２に係る回転子部材１と同様である。また、実施の形態４に係る回転子部材１は、実施の形態２に係る回転子部材１と同様に、回転子１１及び回転電機５０に用いることができる。 Embodiment 4.
FIG. 12 is a schematic view showing a vertical cross section of the rotor member according to the fourth embodiment of the present invention. In the rotor member 1 according to the fourth embodiment, the annular member 5e, which is a second annular member, is arranged on the side opposite to the outer diameter expanding portion 2a of the sleeve 2 and covers the end surface 3b of the permanent magnet 3. ing. Other than this, it is the same as the rotor member 1 according to the second embodiment. Further, the rotor member 1 according to the fourth embodiment can be used for the rotor 11 and the rotary electric machine 50 in the same manner as the rotor member 1 according to the second embodiment.
　円環状部材５ｅを円環状部材５ａ，５ｂ，５ｃ，５ｄと同一形状とすることで部品点数の削減、及び製作コストの削減が可能となる。 By making the annular member 5e the same shape as the annular member 5a, 5b, 5c, 5d, it is possible to reduce the number of parts and the manufacturing cost.
　以上の実施の形態に示した構成は、本発明の内容の一例を示すものであり、別の公知の技術と組み合わせることも可能であるし、本発明の要旨を逸脱しない範囲で、構成の一部を省略、変更することも可能である。 The configuration shown in the above-described embodiment shows an example of the content of the present invention, can be combined with another known technique, and is one of the configurations without departing from the gist of the present invention. It is also possible to omit or change the part.
　１　回転子部材、２　スリーブ、２ａ　外径拡大部、２ｂ　筒面部、３　永久磁石、３ａ，３ｂ　端面、４　補強部材、５ａ，５ｂ，５ｃ，５ｄ，５ｅ　円環状部材、６　固定子、７　固定子鉄心、８　コイル、９ａ，９ｂ，９ｃ，９ｄ，９ｅ，９ｆ，９ｇ，９ｈ，９ｉ，９ｊ，９ｋ，９ｌ，９ｍ，９ｎ　磁束、１０　シャフト、１１　回転子、５０　回転電機。 1 Rotor member, 2 sleeve, 2a outer diameter expansion part, 2b cylinder surface part, 3 permanent magnet, 3a, 3b end face, 4 reinforcement member, 5a, 5b, 5c, 5d, 5e annular member, 6 stator, 7 fixing Child iron core, 8 coils, 9a, 9b, 9c, 9d, 9e, 9f, 9g, 9h, 9i, 9j, 9k, 9l, 9m, 9n magnetic flux, 10 shafts, 11 rotors, 50 rotors.

Claims (5)

  1. 　円筒状の筒面部及び前記筒面部の一端側に前記筒面部の外周面よりも外径が拡大された外径拡大部を有するスリーブと、
    　前記スリーブの前記筒面部の外周側に筒状に配置された複数の永久磁石と、
    　前記永久磁石の外周側に配置された補強部材とを備え、
    　前記外径拡大部の外径は複数の前記永久磁石が形成する円筒形状の外径以上であり、
    　前記永久磁石の前記外径拡大部側の端面全体が前記外径拡大部に接触していることを特徴とする回転子部材。     A sleeve having a cylindrical tubular surface portion and an outer diameter enlarged portion having an outer diameter enlarged from the outer peripheral surface of the tubular surface portion on one end side of the tubular surface portion.
    A plurality of permanent magnets arranged in a tubular shape on the outer peripheral side of the tubular surface portion of the sleeve,
    A reinforcing member arranged on the outer peripheral side of the permanent magnet is provided.
    The outer diameter of the outer diameter enlarged portion is equal to or larger than the cylindrical outer diameter formed by the plurality of permanent magnets.
    A rotor member characterized in that the entire end surface of the permanent magnet on the outer diameter enlarged portion side is in contact with the outer diameter enlarged portion.
  2. 　円筒状の筒面部及び前記筒面部の一端側に前記筒面部の外周面よりも外径が拡大された外径拡大部を有するスリーブと、
    　前記スリーブの前記筒面部の外周側に筒状に配置された複数の永久磁石と、
    　前記永久磁石の外周側に配置された補強部材と、
    　前記スリーブの前記外径拡大部と前記永久磁石との間に配置された非磁性体である第１の円環状部材とを備え、
    　前記第１の円環状部材の外径は複数の前記永久磁石が形成する円筒形状の外径と同じであり、
    　前記外径拡大部の外径は前記第１の円環状部材の外径以上であり、
    　前記補強部材は前記第１の円環状部材の外周にも配置されており、
    　前記第１の円環状部材の前記外径拡大部側の端面全体が前記外径拡大部に接触していることを特徴とする回転子部材。     A sleeve having a cylindrical tubular surface portion and an outer diameter enlarged portion having an outer diameter enlarged from the outer peripheral surface of the tubular surface portion on one end side of the tubular surface portion.
    A plurality of permanent magnets arranged in a tubular shape on the outer peripheral side of the tubular surface portion of the sleeve,
    Reinforcing members arranged on the outer peripheral side of the permanent magnet and
    It is provided with a first annular member which is a non-magnetic material arranged between the outer diameter enlarged portion of the sleeve and the permanent magnet.
    The outer diameter of the first annular member is the same as the outer diameter of the cylindrical shape formed by the plurality of permanent magnets.
    The outer diameter of the outer diameter enlarged portion is equal to or larger than the outer diameter of the first annular member.
    The reinforcing member is also arranged on the outer circumference of the first annular member.
    A rotor member characterized in that the entire end surface of the first annular member on the outer diameter expanding portion side is in contact with the outer diameter expanding portion.
  3. 　前記スリーブの前記筒面部の外周側で前記永久磁石の前記外径拡大部とは反対側に隣接する非磁性体である第２の円環状部材を備え、
    　前記補強部材は前記第２の円環状部材の外周にも配置されていることを特徴とする請求項１又は２に記載の回転子部材。     A second annular member, which is a non-magnetic material, is provided on the outer peripheral side of the tubular surface portion of the sleeve and adjacent to the side opposite to the outer diameter enlarged portion of the permanent magnet.
    The rotor member according to claim 1 or 2, wherein the reinforcing member is also arranged on the outer periphery of the second annular member.
  4. 　請求項１から３のいずれか１項に記載の回転子部材と、前記スリーブに固着されたシャフトとを有することを特徴とする回転子。 A rotor characterized by having the rotor member according to any one of claims 1 to 3 and a shaft fixed to the sleeve.
  5. 　請求項４に記載の回転子と、固定子とを備えることを特徴とする回転電機。 A rotary electric machine including the rotor according to claim 4 and a stator.
PCT/JP2019/012115 2019-03-22 2019-03-22 Rotor member, rotor, and rotating electric machine WO2020194382A1 (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000245086A (en) * 1999-02-18 2000-09-08 Shinko Electric Co Ltd Rotor for permanent magnet electric rotating machine
US20100301696A1 (en) * 2007-10-09 2010-12-02 Cardo Flow Solutions Ab Rotor structure for a permanent magnet electrical machine
WO2017130295A1 (en) * 2016-01-26 2017-08-03 三菱電機株式会社 Rotor for rotating electric machine, rotating electric machine and rotor member for rotating electric machine
WO2018221008A1 (en) * 2017-05-29 2018-12-06 三菱電機株式会社 Rotor, dynamo-electric machine, and method for manufacturing rotor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000245086A (en) * 1999-02-18 2000-09-08 Shinko Electric Co Ltd Rotor for permanent magnet electric rotating machine
US20100301696A1 (en) * 2007-10-09 2010-12-02 Cardo Flow Solutions Ab Rotor structure for a permanent magnet electrical machine
WO2017130295A1 (en) * 2016-01-26 2017-08-03 三菱電機株式会社 Rotor for rotating electric machine, rotating electric machine and rotor member for rotating electric machine
WO2018221008A1 (en) * 2017-05-29 2018-12-06 三菱電機株式会社 Rotor, dynamo-electric machine, and method for manufacturing rotor

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