JP2008236960A - Motor rotor, motor, air conditioner and manufacturing method - Google Patents
Motor rotor, motor, air conditioner and manufacturing method Download PDFInfo
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- JP2008236960A JP2008236960A JP2007075739A JP2007075739A JP2008236960A JP 2008236960 A JP2008236960 A JP 2008236960A JP 2007075739 A JP2007075739 A JP 2007075739A JP 2007075739 A JP2007075739 A JP 2007075739A JP 2008236960 A JP2008236960 A JP 2008236960A
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- 238000004519 manufacturing process Methods 0.000 title claims description 13
- 238000005192 partition Methods 0.000 claims abstract description 127
- 229920005992 thermoplastic resin Polymers 0.000 claims abstract description 45
- 238000001514 detection method Methods 0.000 claims abstract description 14
- 230000002093 peripheral effect Effects 0.000 claims description 27
- 238000000465 moulding Methods 0.000 claims description 13
- 239000004033 plastic Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 2
- 229920001971 elastomer Polymers 0.000 abstract description 85
- 239000005060 rubber Substances 0.000 abstract description 85
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 abstract description 39
- 238000000638 solvent extraction Methods 0.000 abstract description 5
- 239000000463 material Substances 0.000 description 36
- 238000010586 diagram Methods 0.000 description 31
- 230000000694 effects Effects 0.000 description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000002955 isolation Methods 0.000 description 3
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/003—Couplings; Details of shafts
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacture Of Motors, Generators (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
Description
この発明は、ブラシレスモータ、ステッピングモータなどに使用される電動機の回転子に関するものである。 The present invention relates to a rotor of an electric motor used for a brushless motor, a stepping motor or the like.
回転方向の振動がファン等の負荷に伝達するのを防止し、且つ、半径方向の力に対して変形の小さい永久磁石ロータを提供するために、永久磁石の内周側に固着する鉄などの剛性をもつ物質からなる外周部分（外コア）と、シャフトの外周側に固着する鉄などの剛性をもつ物質からなる内周部分（内コア）と、外コアと内コアの間に充填されたゴムなどの弾性体からなり、弾性体には、半径方向に長い貫通穴を、円周方向に複数個設けたことを特徴とする。さらに、半径方向の剛性を高めるため、外コアの内周側および内コアの外周側の両方またはどちらか一方に複数個の凸形の突起部を有し、突起部において、外コアと内コアが近接し対向するようにし、外コアと内コアの近接した部分にも、ゴムが充填されている永久磁石ロータが提案されている（例えば、特許文献１参照）。 In order to prevent the vibration in the rotational direction from being transmitted to a load such as a fan and to provide a permanent magnet rotor that is less deformed with respect to the radial force, such as iron that is fixed to the inner peripheral side of the permanent magnet. Filled between outer and inner cores, outer peripheral part (outer core) made of rigid material, inner peripheral part (inner core) made of rigid material such as iron that adheres to the outer peripheral side of the shaft It is made of an elastic body such as rubber, and the elastic body is provided with a plurality of radially extending through holes in the circumferential direction. Furthermore, in order to increase the rigidity in the radial direction, a plurality of convex protrusions are provided on both or either of the inner peripheral side of the outer core and the outer peripheral side of the inner core. A permanent magnet rotor has been proposed in which rubbers are filled in adjacent portions of the outer core and the inner core so that they are close to each other and face each other (see, for example, Patent Document 1).
また、外コアと内コアの間に締結材を充填してなる電動機のロータにおいて、軸方向、半径方向、回転方向の抜けを防止する手段を、生産性を犠牲にすることなく実現するために、内転型の電動機のロータにおいて、外コア内周側および内コアの内周側に互いに対向する２個以上の突起を有し、外コアの突起、または内コアの突起、または、これらの両方の突起の軸方向両端部が、締結材により覆われている電動機のロータが提案されている（例えば、特許文献２参照）。 In order to realize a means for preventing axial, radial and rotational slipping without sacrificing productivity in an electric motor rotor in which a fastening material is filled between an outer core and an inner core. The rotor of the internal-rotation type motor has two or more protrusions facing each other on the inner peripheral side of the outer core and the inner peripheral side of the inner core, and the outer core protrusion, the inner core protrusion, or these There has been proposed a rotor of an electric motor in which both axial end portions of both protrusions are covered with a fastening material (see, for example, Patent Document 2).
さらに、回転子の防振構造が簡単で組立が容易な電動機の回転子を提供するために、コアの外周面から第一リブに向って、回転軸と平行に第二リブを４つ形成する。この第一リブと第二リブとは、間隔を隔てて対向しており、この隙間に円柱状の防振ゴムを回転軸と平行に配設する。第一リブの先端に防振ゴムの円周に対応して、断面円弧状の第一溝を回転軸と平行に設ける。第二リブの先端も同様に第二溝を設ける。この第一溝と第二溝とに当接させて防振ゴムを配設する。防振ゴムの内部に、防振ゴムの内径よりやや大きく、防振ゴムの外径よりやや小さい外径からなる円柱形の固定ピンを挿入し、第一リブと第二リブとで防振ゴムの外周を圧接し、永久磁石とコアとを互いに連結させる電動機の回転子が提案されている（例えば、特許文献３参照）。
しかしながら、上記特許文献１に提案されている永久磁石ロータは、軸とリング状の回転子マグネットと、軸と回転子マグネットとの間にゴム等の弾性体を充填した連結部とで構成され、トルクリップルやコギングトルクといった回転方向加振力に対する防振性能を高めるためにゴム等の弾性体の硬度を小さく、すなわち柔らかくしていた。そのため、永久磁石ロータは、同時に半径方向にも柔らかくなるため、半径方向の磁気吸引力や軸にかかる外力により騒音が発生したり、ギャップの偏心による効率低下が発生することがあった。そこで、軸の外周と回転子マグネットの内周に複数個の突起部を設け、突起を近接し対向するようにし、近接した突起間にもゴムを充填し、半径方向には硬くする構造となっているが、回転方向の防振効果を高めるためにゴム等の弾性体の硬度を小さく，柔らかくした時は、突起間の隙間を非常に小さくする必要があるため、寸法精度の確保や、突起間の隙間にゴム等の弾性体が充填しにいなどの生産性が課題となる。また、回転方向，半径方向の防振性能の調整要素はゴムの等の弾性体の硬度と突起の間隔のみなので、調整範囲がせまいといった課題がある。 However, the permanent magnet rotor proposed in Patent Document 1 is composed of a shaft and a ring-shaped rotor magnet, and a connecting portion filled with an elastic body such as rubber between the shaft and the rotor magnet. In order to improve the vibration-proof performance against rotational excitation force such as torque ripple and cogging torque, the hardness of an elastic body such as rubber has been reduced, that is, softened. Therefore, since the permanent magnet rotor is also softened in the radial direction at the same time, noise may be generated due to the magnetic attracting force in the radial direction and the external force applied to the shaft, and the efficiency may be reduced due to the eccentricity of the gap. Therefore, a plurality of protrusions are provided on the outer periphery of the shaft and the inner periphery of the rotor magnet so that the protrusions are close to and face each other, and rubber is filled between the adjacent protrusions so that the structure is hardened in the radial direction. However, when the hardness of an elastic body such as rubber is made small and soft in order to enhance the vibration isolation effect in the rotational direction, it is necessary to make the gap between the projections very small. Productivity such as difficulty in filling the gaps between elastic bodies such as rubber becomes an issue. Further, since the adjustment elements for the vibration isolation performance in the rotational direction and the radial direction are only the hardness of the elastic body such as rubber and the interval between the protrusions, there is a problem that the adjustment range is narrow.
この発明は、上記のような課題を解決するためになされたもので、電動機の回転子及び電動機及び空気調和機の低騒音化、生産性向上、低コスト化を目的する。また、電動機の回転子の製造方法の生産性向上、低コスト化を目的する。 The present invention has been made to solve the above-described problems, and aims to reduce noise, improve productivity, and reduce costs of the rotor and the motor and the air conditioner of the motor. Moreover, it aims at the productivity improvement and cost reduction of the manufacturing method of the rotor of an electric motor.
この発明に係る電動機の回転子は、軸と、メインマグネットと、このメインマグネットの一方の軸方向端面の近傍に配置される位置検出マグネットとを熱可塑性樹脂で一体に成形して構成される回転子マグネットと、軸と、回転子マグネットとの間に充填される弾性体で構成される連結部と、この連結部を半径方向に多層に仕切るリング状の仕切材とを備えたことを特徴とする。 The rotor of the electric motor according to the present invention is a rotation formed by integrally molding a shaft, a main magnet, and a position detection magnet disposed in the vicinity of one axial end surface of the main magnet with a thermoplastic resin. A connecting portion composed of an elastic body filled between the child magnet, the shaft, and the rotor magnet, and a ring-shaped partition material that divides the connecting portion in multiple layers in the radial direction. To do.
この発明に係る電動機の回転子は、連結部を半径方向に多層に仕切るリング状の仕切材を備えたことにより、回転方向には柔らかく防振性能を維持したまま半径方向に硬くなり、磁気吸引力の影響を抑えることができ、低騒音化が図れる。 The rotor of the electric motor according to the present invention is provided with a ring-shaped partition material that divides the connecting portion into multiple layers in the radial direction, so that it becomes soft in the rotational direction and hard in the radial direction while maintaining vibration-proof performance, and magnetic attraction The influence of force can be suppressed and noise can be reduced.
実施の形態１．
図１乃至図６は実施の形態１を示す図で、図１は電動機の回転子１００の構成を示す図（（ａ）は（ｂ）のＡ−Ａ断面図、（ｂ）は側面図）、図２は回転子マグネット５の構成を示す図（（ａ）は（ｂ）のＢ−Ｂ断面図、（ｂ）は側面図）、図３はメインマグネット６の構成を示す図（（ａ）は側面図、（ｂ）は（ａ）のＣ−Ｃ断面図）、図４は位置検出用マグネット７の構成を示す図（（ａ）は左側面図、（ｂ）は（ａ）のＤ−Ｄ断面図、（ｃ）は右側面図）、図５は仕切材１４の斜視図、図６は変形例の電動機の回転子１００の構成を示す図（（ａ）は（ｂ）のＥ−Ｅ断面図、（ｂ）は側面図）である。
Embodiment 1 FIG.
1 to 6 are diagrams showing the first embodiment, and FIG. 1 is a diagram showing a configuration of a rotor 100 of an electric motor ((a) is a cross-sectional view taken along line AA of (b), and (b) is a side view). 2 is a diagram showing the configuration of the rotor magnet 5 ((a) is a sectional view taken along line BB of (b), (b) is a side view), and FIG. 3 is a diagram showing the configuration of the main magnet 6 ((a ) Is a side view, FIG. 4B is a cross-sectional view taken along the line CC in FIG. 4A, FIG. 4 is a diagram showing the configuration of the position detecting magnet 7, FIG. (C) is a right side view), FIG. 5 is a perspective view of the partition member 14, and FIG. 6 is a diagram showing a configuration of a rotor 100 of a motor according to a modification ((a) is a diagram of (b)). It is EE sectional drawing, (b) is a side view.
図１に示すように、電動機の回転子１００は、軸１と、回転子マグネット５と、リング状の仕切材１４とがゴム等の弾性体１７（連結部の一例）で一体に成形されている。 As shown in FIG. 1, a rotor 100 of an electric motor includes a shaft 1, a rotor magnet 5, and a ring-shaped partition member 14 that are integrally formed with an elastic body 17 (an example of a connecting portion) such as rubber. Yes.
軸１は外径、仕切材１４は両端面の突起１６（図１の例では片側４個、計８個）、回転子マグネット５は外径を位置決めとし金型にセットされ、ゴム等の弾性体１７を注入し一体に成形する。尚、突起１６は、仕切材１４の一方の端面のみに設けてもよい。 The shaft 1 has an outer diameter, the partition member 14 has protrusions 16 on both end faces (four on one side, a total of eight in the example of FIG. 1), and the rotor magnet 5 is set in a mold with the outer diameter positioned, and is elastic such as rubber. The body 17 is injected and molded integrally. The protrusion 16 may be provided only on one end surface of the partition member 14.
ゴム等の弾性体１７は、仕切材１４の内、外径側の両方から注入され、ゴム等の弾性体１７は仕切材１４により仕切られ、半径方向に２層になる。 The elastic body 17 such as rubber is injected from both the outer diameter side and the outer side of the partition member 14, and the elastic body 17 such as rubber is partitioned by the partition member 14 and has two layers in the radial direction.
軸１はローレット２を覆うように外周を熱可塑性樹脂３で成形され、ローレット２により回り止めされる。熱可塑性樹脂３の外周に凸部４が設けられ、ゴム等の弾性体１７との回り止めとなる。凸部４は、熱可塑性樹脂３の外周の電動機の回転子１００の軸方向略中央部付近に形成される。 The outer periphery of the shaft 1 is molded with a thermoplastic resin 3 so as to cover the knurl 2 and is prevented from rotating by the knurl 2. The convex part 4 is provided in the outer periphery of the thermoplastic resin 3, and becomes a rotation stop with elastic bodies 17, such as rubber | gum. The convex portion 4 is formed in the vicinity of the substantially central portion in the axial direction of the rotor 100 of the electric motor on the outer periphery of the thermoplastic resin 3.
ローレットとはフランス語でギザギザ形状のことを意味し、英語ではナーリングと呼ばれている。日本での製造現場で一般的にはローレットと呼ばれ、主に丸物の外周にすべり止めとしての役割がある。主に圧入部品（インサート）の接続部に摩擦係数を上げたり、内径にそのギザギザを食付かせたりして抜け止め、回り止めとして使用されている。 Knurl means a jagged shape in French and is called knurling in English. It is generally called knurling at the manufacturing site in Japan, and it plays a role as an anti-slip mainly on the outer periphery of the round object. It is mainly used as a detent to prevent slipping by increasing the coefficient of friction at the connection part of the press-fitted parts (insert) or by causing the inner diameter of the joint to bite.
また、ゴム等の弾性体１７は、熱可塑性樹脂３の凸部４の両端面を覆うように成形されるので、凸部４は軸方向の抜け止めにもなる。 Further, since the elastic body 17 such as rubber is formed so as to cover both end faces of the convex portion 4 of the thermoplastic resin 3, the convex portion 4 also serves to prevent the axial portion from coming off.
リング状の仕切材１４にも、内周面及び外周面に軸方向に部分的に延びる凸部１５が形成されている。凸部１５が回り止め、抜け止めとなる（図５参照）。 The ring-shaped partition member 14 is also formed with convex portions 15 that partially extend in the axial direction on the inner peripheral surface and the outer peripheral surface. The convex portion 15 is prevented from rotating and prevented from coming off (see FIG. 5).
回転子マグネット５も、熱可塑性樹脂８の内周面に軸方向に延びる凸部９が、略軸方向中央部に部分的に形成されている。凸部９が回り止め、抜け止めとなる（図２参照）。 In the rotor magnet 5, a convex portion 9 extending in the axial direction on the inner peripheral surface of the thermoplastic resin 8 is partially formed in a substantially axial central portion. The convex portion 9 is prevented from rotating and retained (see FIG. 2).
さらに、回転子マグネット５は両端面を挟むようにゴム等の弾性体１７で一体成形されるので、軸方向の振れが抑えられる。 Further, since the rotor magnet 5 is integrally formed with an elastic body 17 such as rubber so as to sandwich the both end faces, axial vibration is suppressed.
図２に示すように、回転子マグネット５は、極配向され、プラスチックマグネットで成形された主磁束を発するメインマグネット６と、メインマグネット６の一方の軸方向端部近傍に配置され、位置検出のための位置検出用マグネット７とを熱可塑性樹脂８で一体に成形して構成される。既に述べたように、熱可塑性樹脂８の内周面に軸方向に延びる凸部９が、略軸方向中央部に部分的に形成されている（図２の例は、４個の凸部９）。 As shown in FIG. 2, the rotor magnet 5 is disposed in the vicinity of one end in the axial direction of the main magnet 6, which is pole-oriented and formed of a plastic magnet and emits a main magnetic flux. The position detecting magnet 7 is integrally formed with a thermoplastic resin 8. As already described, the convex portion 9 extending in the axial direction on the inner peripheral surface of the thermoplastic resin 8 is partially formed in the substantially central portion in the axial direction (the example of FIG. 2 has four convex portions 9. ).
図３に示すように、極配向され、プラスチックマグネットで成形されたメインマグネット６は、内径側に軸方向に貫通する複数個（図３では８個）の凹部１０と、軸方向の片側端面に複数個の台座１１とを備えている。台座１１は凹部１０より少ない数（図３では４個）で、台座１１にも凹部１０が貫通している。台座１１は位置検出用マグネット７の設置面となる。また、台座１１に設けられた凹部１０に位置検出用マグネット７の凸部１２（図４参照）が嵌め合わされ、位置検出用マグネット７を位置決めする。凹部１０に熱可塑性樹脂８が充填され、回り止めとなる。 As shown in FIG. 3, the main magnet 6 that is polar-oriented and formed of a plastic magnet has a plurality of (eight in FIG. 3) recesses 10 that penetrate in the axial direction on the inner diameter side, and an axial end surface on one side. A plurality of pedestals 11 are provided. The number of pedestals 11 is less than that of the recesses 10 (four in FIG. 3), and the recesses 10 penetrate the pedestals 11 as well. The pedestal 11 becomes an installation surface of the position detection magnet 7. Further, the convex portion 12 (see FIG. 4) of the position detecting magnet 7 is fitted into the concave portion 10 provided in the base 11, and the position detecting magnet 7 is positioned. The recess 10 is filled with the thermoplastic resin 8 to prevent rotation.
図４に示すように、位置検出用マグネット７は一方の軸方向端面に複数個（図４の例は、４個）の凸部１２が形成されている。また、他方の軸方向端面の内径側に、段差１３を備えている。凸部１２はメインマグネット６の台座１１の凹部１０（図３参照）に嵌め合わされ回り止めとなる。段差１３は熱可塑性樹脂８が充填され軸方向の抜け止めとなる。 As shown in FIG. 4, the position detecting magnet 7 has a plurality of (four in the example of FIG. 4) convex portions 12 formed on one axial end face. Further, a step 13 is provided on the inner diameter side of the other axial end face. The convex portion 12 is fitted into the concave portion 10 (see FIG. 3) of the pedestal 11 of the main magnet 6 so as to prevent rotation. The step 13 is filled with the thermoplastic resin 8 and is prevented from coming off in the axial direction.
メインマグネット６と位置検出用マグネット７とは、メインマグネット６の凹部１０と位置検出用マグネット７の凸部１２とを嵌め合せ、メインマグネット６の台座１１まで位置検出用マグネット７の一方の端面が接するよう挿入される。そして、位置検出用マグネット７の内径端面、メインマグネット６の他方の端面の一部を覆うように熱可塑性樹脂８で一体に成形され、回転子マグネット５となる。この時、回転子マグネット５の内径には、熱可塑性樹脂８に凸部９が形成される。位置検出用マグネット７の内径側の段差１３と、メインマグネット６端面とを覆うように熱可塑性樹脂８で一体に成形したことで、位置検出用マグネット７とメインマグネット６の軸方向の抜け止めとなる。 The main magnet 6 and the position detection magnet 7 are configured such that the concave portion 10 of the main magnet 6 and the convex portion 12 of the position detection magnet 7 are fitted together, and one end face of the position detection magnet 7 extends to the base 11 of the main magnet 6. Inserted to touch. Then, the rotor magnet 5 is formed integrally with the thermoplastic resin 8 so as to cover the inner diameter end face of the position detecting magnet 7 and a part of the other end face of the main magnet 6. At this time, a convex portion 9 is formed on the thermoplastic resin 8 on the inner diameter of the rotor magnet 5. By integrally forming the thermoplastic resin 8 so as to cover the step 13 on the inner diameter side of the position detection magnet 7 and the end surface of the main magnet 6, the position detection magnet 7 and the main magnet 6 can be prevented from coming off in the axial direction. Become.
図５に示す仕切材１４は、熱可塑性樹脂を用いて成形したものである。仕切材１４は、内、外周面に軸方向に部分的に延びる複数（図５の例は、内、外周面のそれぞれに４個）の凸部１５を備える。また、軸方向両端面に複数（図５の例は、片側４個）の突起１６が設けられている。仕切材１４の内、外周面の凸部１５は、ゴム等の弾性体１７に対し回り止め，抜け止めとなる。また、軸方向両端面に形成された突起１６は、ゴム等の弾性体１７の成形金型に、仕切材１４を挿入する時の位置決めとなる。 The partition material 14 shown in FIG. 5 is formed using a thermoplastic resin. The partition member 14 includes a plurality of convex portions 15 (four in each of the inner and outer peripheral surfaces in the example of FIG. 5) partially extending in the axial direction on the inner and outer peripheral surfaces. In addition, a plurality of projections 16 (four on one side in the example of FIG. 5) are provided on both end surfaces in the axial direction. Of the partition member 14, the convex portion 15 on the outer peripheral surface is prevented from rotating or coming off with respect to an elastic body 17 such as rubber. Further, the protrusions 16 formed on both end surfaces in the axial direction serve as positioning when the partition member 14 is inserted into a molding die of an elastic body 17 such as rubber.
軸１と回転子マグネット５との間に充填されるゴム等の弾性体１７は、仕切材１４によって仕切られ半径方向に２層になる。仕切材１４で半径方向にゴム等の弾性体１７を２層にすることで、ゴム等の弾性体１７が１層のときに比べて回転方向のバネ定数の変化を抑えつつ半径方向のバネ定数を大きくできる。すなわち、回転方向には柔らかく防振性能を維持したまま半径方向に硬くなり、磁気吸引力の影響を抑えることができ、低騒音化が図れる。 An elastic body 17 such as rubber filled between the shaft 1 and the rotor magnet 5 is partitioned by a partition member 14 and has two layers in the radial direction. By forming the elastic body 17 such as rubber in two layers in the radial direction by the partition member 14, the spring constant in the radial direction is suppressed while suppressing a change in the spring constant in the rotational direction as compared with the case where the elastic body 17 such as rubber is one layer. Can be increased. In other words, it is soft in the rotational direction and hardened in the radial direction while maintaining the vibration-proof performance, so that the influence of the magnetic attractive force can be suppressed and noise can be reduced.
本実施の形態では、一例として熱可塑性樹脂を成形した仕切材１４を用いたが、金属製の仕切材１４を用いても良い。製造方法によらず、ゴム等の弾性体１７より高剛性の材質の仕切材１４とすることで同様の効果が得られる。 In this embodiment, as an example, the partition material 14 formed of a thermoplastic resin is used, but a metal partition material 14 may be used. Regardless of the manufacturing method, the same effect can be obtained by using the partition material 14 having a higher rigidity than the elastic body 17 such as rubber.
メインマグネット６に極配向され、プラスチックマグネットを成形したものを用いたが、焼結マグネットや、磁路に電磁鋼板を積層したバックヨークまたは軟磁性体を混合した熱可塑性樹脂を成形したバックヨークの外周に、プラスチックマグネットまたは焼結マグネットを配置したものを用いても良い。 The main magnet 6 is polar-oriented and molded with a plastic magnet. However, a sintered magnet, a back yoke in which electromagnetic steel plates are laminated on a magnetic path, or a back yoke in which a thermoplastic resin mixed with a soft magnetic material is molded. You may use what has arrange | positioned the plastic magnet or the sintered magnet in the outer periphery.
回転子マグネット５の材質、固定方法によらず、軸１と回転子マグネット５との間に充填されるゴム等の弾性体１７を仕切材１４により半径方向に分割することで同様の効果が得られることはいうまでもない。 Regardless of the material and fixing method of the rotor magnet 5, the same effect can be obtained by dividing the elastic body 17 such as rubber filled between the shaft 1 and the rotor magnet 5 in the radial direction by the partition member 14. Needless to say.
また、図２のようにメインマグネット６と位置検出用マグネット７とを熱可塑性樹脂８で一体に成形した回転子マグネット５を用いる例を示したが、図６に示すようにメインマグネット６と、位置検出用マグネット７と、軸１とを熱可塑性樹脂８で一体に成形すると同時に、リング状の仕切材１４を一体に形成した回転子マグネット５を用いてもよい。端面に設けられた連結部１８によりメインマグネット６と、位置検出用マグネット７と、リング状の仕切材１４と、軸１とが一体に成形される。 Moreover, although the example which uses the rotor magnet 5 which integrally molded the main magnet 6 and the position detection magnet 7 with the thermoplastic resin 8 as shown in FIG. 2 was shown, as shown in FIG. The rotor magnet 5 in which the ring-shaped partition member 14 is integrally formed may be used at the same time that the position detecting magnet 7 and the shaft 1 are integrally formed with the thermoplastic resin 8. The main magnet 6, the position detecting magnet 7, the ring-shaped partition member 14, and the shaft 1 are integrally formed by the connecting portion 18 provided on the end surface.
この回転子マグネット５をゴム等の弾性体１７を成形する金型に挿入する。ゴム等の弾性体１７を成形し、その後連結部１８を切断または切除し図１に示す電動機の回転子１００とする。このようにすることで、仕切材１４によりゴム等の弾性体１７が２層になり、同様の効果が得られるだけでなく、成形工程を省くことができ、生産性向上、低コスト化が図れる。 This rotor magnet 5 is inserted into a mold for molding an elastic body 17 such as rubber. An elastic body 17 such as rubber is molded, and then the connecting portion 18 is cut or excised to obtain the rotor 100 of the electric motor shown in FIG. By doing in this way, the elastic material 17 such as rubber becomes two layers by the partition material 14, and not only the same effect can be obtained, but also the molding process can be omitted, and the productivity can be improved and the cost can be reduced. .
実施の形態２．
図７乃至図１０は実施の形態２を示す図で、図７は電動機の回転子１００の構成を示す図（（ａ）は（ｂ）のＦ−Ｆ断面図、（ｂ）は側面図）、図８は仕切材１９の斜視図、図９は電動機の回転子１００の構成を示す図（（ａ）は（ｂ）のＧ−Ｇ断面図、（ｂ）は側面図）、図１０は仕切材２１の斜視図である。
Embodiment 2. FIG.
7 to 10 are diagrams showing the second embodiment, and FIG. 7 is a diagram showing the configuration of the rotor 100 of the motor ((a) is a sectional view taken along line FF in (b), and (b) is a side view). 8 is a perspective view of the partition member 19, FIG. 9 is a diagram showing the configuration of the rotor 100 of the electric motor ((a) is a sectional view taken along line GG of (b), (b) is a side view), and FIG. 3 is a perspective view of a partition member 21. FIG.
図７に示す電動機の回転子１００は、仕切材１９が図１の電動機の回転子１００と異なり、その他は同じである。 The rotor 100 of the electric motor shown in FIG. 7 is the same as the rotor 100 of the electric motor of FIG.
図８に示すように、リング状の仕切材１９は、軸方向に連なる複数（図８の例では３個）の穴２０（開口部の一例）が、周方向の４箇所に設けられている（計１２個）。両端面には、複数（図８の例では、片側４個）の突起１６が設けられている。 As shown in FIG. 8, the ring-shaped partition member 19 is provided with a plurality of (three in the example of FIG. 8) holes 20 (an example of an opening) that are continuous in the axial direction at four locations in the circumferential direction. (12 total). A plurality of projections 16 (four on one side in the example of FIG. 8) are provided on both end faces.
複数の穴２０はゴム等の弾性体１７を仕切材１９の内、外周側に流すためのものである。仕切材１９の複数の穴２０にゴム等の弾性体１７が充填されることで、仕切材１９の回り止め、抜け止めにもなる。 The plurality of holes 20 are for flowing an elastic body 17 such as rubber to the outer peripheral side of the partition member 19. Filling the plurality of holes 20 of the partition member 19 with an elastic body 17 such as rubber also prevents the partition member 19 from rotating and coming off.
また、両端面の突起１６は、ゴム等の弾性体１７の成形金型に仕切材１９を挿入する時の位置決めとなる。 Further, the protrusions 16 on both end faces are positioned when the partition member 19 is inserted into a molding die of an elastic body 17 such as rubber.
図７に示すように、外周を熱可塑性樹脂３で成形され、熱可塑性樹脂３に凸部４が設けられた軸１と、回転子マグネット５と、リング状の仕切材１９とがゴム等の弾性体１７で一体に成形されている。 As shown in FIG. 7, the shaft 1 whose outer periphery is molded with the thermoplastic resin 3 and the convex portion 4 is provided on the thermoplastic resin 3, the rotor magnet 5, and the ring-shaped partition member 19 are made of rubber or the like. The elastic body 17 is integrally formed.
軸１は外径、仕切材１９は両端面の突起１６、回転子マグネット５は外径を位置決めとし金型にセットされ、ゴム等の弾性体１７を注入し、電動機の回転子１００が一体に成形される。ゴム等の弾性体１７は、リング状の仕切材１９の内、外周側のどちらか一方から注入され、リング状の仕切材１９によりゴム等の弾性体１７は仕切られ、半径方向に２層になる。 The shaft 1 has an outer diameter, the partition member 19 has protrusions 16 on both end faces, and the rotor magnet 5 is positioned on the outer diameter and is set in a mold, and an elastic body 17 such as rubber is injected, so that the rotor 100 of the electric motor is integrated. Molded. The elastic body 17 such as rubber is injected from either the outer peripheral side of the ring-shaped partition member 19, and the elastic body 17 such as rubber is partitioned by the ring-shaped partition member 19, and is divided into two layers in the radial direction. Become.
軸１外周の凸部４、回転子マグネット５の内径に設けられた凸部９は、ゴム等の弾性体１７の回り止め、抜け止めになる。 The protrusion 4 on the outer periphery of the shaft 1 and the protrusion 9 provided on the inner diameter of the rotor magnet 5 prevent the elastic body 17 such as rubber from rotating and coming off.
さらに、回転子マグネット５は両端面を挟むようにゴム等の弾性体１７で成形されるので、軸方向の振れが抑えられる。リング状の仕切材１９には側面に貫通した複数の穴２０が設けられているので、ゴム等の弾性体１７を内、外周側のどちらか一方から注入することでゴム等の弾性体１７を充填できる。また、ゴム等の弾性体１７が充填されることで仕切材１９の複数の穴２０が回り止め、抜け止めになる。 Further, since the rotor magnet 5 is formed of an elastic body 17 such as rubber so as to sandwich both end faces, axial shake is suppressed. Since the ring-shaped partition member 19 is provided with a plurality of holes 20 penetrating in the side surface, the elastic body 17 such as rubber is injected by injecting the elastic body 17 such as rubber from either the inner side or the outer peripheral side. Can be filled. Further, by filling the elastic body 17 such as rubber, the plurality of holes 20 of the partition member 19 are prevented from rotating and retained.
本実施の形態のリング状の仕切材１９は、上記実施の形態１のリング状の仕切材１４に複数の穴が設けられたものである。複数の穴が設けることで、ゴム等の弾性体１７を仕切材１９の内、外周側のどちらか一方から注入することで、ゴム等の弾性体１７を充填することができるようになり、注入するゲートを減らすことができ、金型が簡略化される。また、生産性向上も図れ、低コストとなる。 The ring-shaped partition member 19 of the present embodiment is obtained by providing a plurality of holes in the ring-shaped partition member 14 of the first embodiment. By providing a plurality of holes, it becomes possible to fill the elastic body 17 such as rubber by injecting the elastic body 17 such as rubber from either the outer peripheral side or the inside of the partition material 19. The number of gates to be reduced can be reduced, and the mold is simplified. Further, productivity can be improved and the cost is reduced.
本実施の形態の一例として、複数の穴が設けられたリング状の仕切材１９について説明したが、図９、図１０に示すように、複数の切欠き２２（開口部の一例）が設けられたリング状の仕切材２１を用いても同様の効果が得られる。切欠き２２は、図１０の例では、軸方向に所定長さ施され、周方向の４箇所に設けられている。 Although the ring-shaped partition member 19 provided with a plurality of holes has been described as an example of the present embodiment, a plurality of notches 22 (an example of an opening) are provided as shown in FIGS. The same effect can be obtained even when the ring-shaped partition member 21 is used. In the example of FIG. 10, the notches 22 are given a predetermined length in the axial direction and are provided at four locations in the circumferential direction.
なお、図１０に示す複数の切欠き２２が設けられた仕切材２１を用いた場合、軸１と回転子マグネット５とをゴム等の弾性体１７で一体に成形し、その後に熱可塑性樹脂を注入しリング状の仕切材２１を成形することも可能である。ゴム等の弾性体１７での成形時に、成形金型に仕切材２１と同じ形状の部分を設けておく。ゴム等の弾性体１７での成形後には、仕切材２１と同じ形状の空洞が形成される。その空洞に、熱可塑性樹脂を注入しリング状の仕切材２１を成形する。この方法の利点は、仕切材２１の成形時の熱可塑性樹脂の圧力により、回転子マグネット５とゴム等の弾性体１７との間に生じる隙間を無くすことである。回転子マグネット５とゴム等の弾性体１７との間の隙間を無くすことにより、振動・騒音面で効果がある。 When the partition member 21 provided with a plurality of notches 22 shown in FIG. 10 is used, the shaft 1 and the rotor magnet 5 are integrally formed with an elastic body 17 such as rubber, and then a thermoplastic resin is formed. It is also possible to mold the ring-shaped partition member 21 by pouring. At the time of molding with an elastic body 17 such as rubber, a portion having the same shape as the partition material 21 is provided in the molding die. After molding with an elastic body 17 such as rubber, a cavity having the same shape as the partition material 21 is formed. A thermoplastic resin is injected into the cavity to form a ring-shaped partition member 21. The advantage of this method is to eliminate a gap generated between the rotor magnet 5 and the elastic body 17 such as rubber due to the pressure of the thermoplastic resin when the partition member 21 is molded. By eliminating the gap between the rotor magnet 5 and the elastic body 17 such as rubber, there is an effect in terms of vibration and noise.
また、実施の形態１と同様に、仕切材１９及び仕切材２１は金属製としても良い。製造方法によらず、仕切材１９及び仕切材２１をゴム等の弾性体１７より高剛性の材質とすることで同様の効果が得られる。 Further, as in the first embodiment, the partition member 19 and the partition member 21 may be made of metal. Regardless of the manufacturing method, the same effect can be obtained by making the partition member 19 and the partition member 21 a material having higher rigidity than the elastic body 17 such as rubber.
実施の形態３．
図１１、図１２は実施の形態３を示す図で、図１１は電動機の回転子１００の構成を示す図（（ａ）は（ｂ）のＨ−Ｈ断面図、（ｂ）は側面図）、図１２は仕切材２３の斜視図である。
Embodiment 3 FIG.
11 and 12 are diagrams showing the third embodiment, and FIG. 11 is a diagram showing a configuration of the rotor 100 of the electric motor ((a) is a cross-sectional view taken along line HH in (b), and (b) is a side view). FIG. 12 is a perspective view of the partition member 23.
図１２に示すリング状の仕切材２３は、複数の切欠き２２（図１０の切欠き２２と同じもの）が、軸方向に所定長さ施され、周方向の４箇所に設けられている。また、軸方向両端面に、フランジ２４が形成されている。 The ring-shaped partition member 23 shown in FIG. 12 has a plurality of cutouts 22 (the same as the cutouts 22 in FIG. 10) with a predetermined length in the axial direction and provided at four locations in the circumferential direction. Further, flanges 24 are formed on both end surfaces in the axial direction.
複数の切欠き２２は、ゴム等の弾性体１７を仕切材２３の内、外周側に流すためのもので、ゴム等の弾性体１７が充填することで回り止め、抜け止めにもなる。 The plurality of cutouts 22 are for flowing an elastic body 17 such as rubber to the outer peripheral side of the partition member 23, and are also prevented from rotating and coming off when filled with the elastic body 17 such as rubber.
また、両端面のフランジ２４は、ゴム等の弾性体１７の両端面を抑えるよう形成されているので，軸方向の振れをより抑えることができる。 Further, since the flanges 24 on both end surfaces are formed so as to suppress both end surfaces of the elastic body 17 such as rubber, it is possible to further suppress axial deflection.
図１１に示すように、外周を熱可塑性樹脂３で成形され、熱可塑性樹脂３に凸部４が設けられた軸１と、回転子マグネット５とがゴム等の弾性体１７で一体に成形されている。 As shown in FIG. 11, the outer periphery is molded with a thermoplastic resin 3, and the shaft 1 on which the convex portion 4 is provided on the thermoplastic resin 3 and the rotor magnet 5 are integrally molded with an elastic body 17 such as rubber. ing.
軸１は外径、回転子マグネット５は外径を位置決めとし金型にセットされ、ゴム等の弾性体１７を注入し一体に成形する。ゴム等の弾性体１７は、複数の切欠き２２、端面にフランジ２４が設けられた仕切材２３の形状が空洞となるよう構成された金型で注入される。ゴム等の弾性体１７で一体としたものを仕切材成形用金型に挿入し、空洞部分に熱可塑性樹脂が注入され、側面に複数の切欠き２２、端面にフランジ２４が設けられたリング状の仕切材２３を形成し、仕切材２３によりゴム等の弾性体１７は仕切られ、半径方向に２層になる。 The shaft 1 is positioned on the outer diameter, and the rotor magnet 5 is positioned on the outer diameter. The elastic body 17 such as rubber is injected and molded integrally. The elastic body 17 such as rubber is injected by a mold configured so that the shape of the partition member 23 provided with a plurality of notches 22 and flanges 24 on the end faces is hollow. A ring-shaped member in which an elastic body 17 such as rubber is integrated into a partition molding die, thermoplastic resin is injected into the cavity, a plurality of notches 22 are provided on the side surface, and a flange 24 is provided on the end surface. The partitioning material 23 is formed, and the elastic body 17 such as rubber is partitioned by the partitioning material 23, so that two layers are formed in the radial direction.
軸１外周の凸部４、回転子マグネット５の内径に設けられた凸部９はゴム等の弾性体１７との回り止め、抜け止めになる。 The convex part 4 on the outer periphery of the shaft 1 and the convex part 9 provided on the inner diameter of the rotor magnet 5 prevent or come off from an elastic body 17 such as rubber.
回転子マグネット５は両端面を挟むようにゴム等の弾性体１７で成形され、さらにゴム等の弾性体１７の両端面を挟むように仕切材２３のフランジ２４を成形したので、軸方向の振れをより抑えることができる。仕切材２３に設けた複数の切欠き２２は、回り止め、抜け止めになる。 The rotor magnet 5 is formed of an elastic body 17 such as rubber so that both end faces are sandwiched, and the flange 24 of the partition member 23 is formed so as to sandwich both end faces of the elastic body 17 such as rubber. Can be further suppressed. The plurality of notches 22 provided in the partition member 23 prevent rotation and come off.
本実施の形態の仕切材２３は、上記実施の形態２の複数の切欠き２２が設けられた仕切材２１に代えて、複数の切欠き２２と両端面にフランジ２４が設けられたリング状の仕切材２３にしたものである。回転子マグネット５を、ゴム等の弾性体１７と、熱可塑性樹脂で成形した仕切材２３の両端面にフランジ２４で挟み込むように構成されるので、軸方向の振れがより抑えられ、より低騒音化が図れる。 The partition member 23 according to the present embodiment is a ring-shaped member having a plurality of notches 22 and flanges 24 provided at both end faces instead of the partition member 21 having the plurality of notches 22 of the second embodiment. The partition material 23 is used. Since the rotor magnet 5 is configured to be sandwiched between the flanges 24 between both ends of an elastic body 17 such as rubber and a partition material 23 formed of a thermoplastic resin, axial vibration is further suppressed and noise is reduced. Can be achieved.
実施の形態４．
図１３乃至図１６は実施の形態４を示す図で、図１３は電動機の回転子１００の構成を示す図（（ａ）は（ｂ）のＫ−Ｋ断面図、（ｂ）は側面図）、図１４は仕切材２７の斜視図、図１５は電動機の回転子１００の構成を示す図（（ａ）は（ｂ）のＬ−Ｌ断面図、（ｂ）は側面図）、図１６は仕切材２７の斜視図である。
Embodiment 4 FIG.
FIGS. 13 to 16 are diagrams showing the fourth embodiment, and FIG. 13 is a diagram showing a configuration of the rotor 100 of the electric motor ((a) is a sectional view taken along the line KK in (b), and (b) is a side view). 14 is a perspective view of the partition member 27, FIG. 15 is a diagram showing the configuration of the rotor 100 of the electric motor ((a) is an LL sectional view of (b), (b) is a side view), and FIG. 3 is a perspective view of a partition member 27. FIG.
図１４に示す仕切材２７は、複数の切欠き２２（図１０と同じもの）を設けたリング状の第一の仕切材２５と、複数の切欠き２２を設けたリング状の第二の仕切材２６とで構成される。第一の仕切材２５と、第二の仕切材２６とは分離していて、それぞれ、複数の切欠き２２が設けられている。 A partition member 27 shown in FIG. 14 includes a ring-shaped first partition member 25 provided with a plurality of notches 22 (the same as FIG. 10) and a ring-shaped second partition member provided with a plurality of notches 22. And material 26. The 1st partition material 25 and the 2nd partition material 26 are isolate | separated, and the some notch 22 is provided, respectively.
切欠き２２は、第一の仕切材２５、第二の仕切材２６の内、外周側にゴム等の弾性体１７を流すためのもので、ゴム等の弾性体１７が充填することで回り止め、抜け止めにもなる。 The notch 22 is for flowing an elastic body 17 such as rubber on the outer peripheral side of the first partition member 25 and the second partition member 26, and prevents rotation when the elastic body 17 such as rubber is filled. It will also prevent you from coming off.
また、それぞれの両端面の突起１６はゴム等の弾性体１７の成形金型に仕切材２７を挿入する時の位置決めである。位置決めされると、第一の仕切材２５、第二の仕切材２６は同心円状に配置される。 Further, the protrusions 16 on both end faces are positioned when the partition member 27 is inserted into a molding die of an elastic body 17 such as rubber. When positioned, the first partition member 25 and the second partition member 26 are arranged concentrically.
図１３に示すように、外周を熱可塑性樹脂３で成形され、熱可塑性樹脂３に凸部４が設けられた軸１と、回転子マグネット５と、２つの第一の仕切材２５、第二の仕切材２６がゴム等の弾性体１７で一体に成形されている。 As shown in FIG. 13, the shaft 1 whose outer periphery is molded with the thermoplastic resin 3 and the convex portion 4 is provided on the thermoplastic resin 3, the rotor magnet 5, the two first partition members 25, the second The partition member 26 is integrally formed of an elastic body 17 such as rubber.
軸１は外径、回転子マグネット５は外径で位置決めされる。２つの第一の仕切材２５、第二の仕切材２６は、それぞれの両端面の突起１６で位置決めされて同心円状に金型にセットされ、ゴム等の弾性体１７を注入し一体に成形される。 The shaft 1 is positioned with an outer diameter, and the rotor magnet 5 is positioned with an outer diameter. The two first partition members 25 and the second partition member 26 are positioned by the projections 16 on both end faces and set concentrically in a mold, and are molded integrally by injecting an elastic body 17 such as rubber. The
ゴム等の弾性体１７は、第一の仕切材２５、第二の仕切材２６の内、外周側のどちらか一方から注入される。軸１の外周の凸部４、回転子マグネット５の内径に設けられた凸部９は、ゴム等の弾性体１７との回り止め、抜け止めになる。さらに回転子マグネット５は、両端面を挟むようにゴム等の弾性体１７で成形されるので、軸方向の振れが抑えられる。 The elastic body 17 such as rubber is injected from one of the first partition member 25 and the second partition member 26 on the outer peripheral side. The convex portion 4 on the outer periphery of the shaft 1 and the convex portion 9 provided on the inner diameter of the rotor magnet 5 prevent rotation with respect to an elastic body 17 such as rubber, and prevent it from coming off. Further, since the rotor magnet 5 is formed of an elastic body 17 such as rubber so as to sandwich both end faces, axial shake is suppressed.
第一の仕切材２５、第二の仕切材２６には、複数の切欠き２２が設けられ、ゴム等の弾性体１７を内、外周側のどちらか一方から注入することでゴム等の弾性体１７を充填でき、第一の仕切材２５、第二の仕切材２６によりゴム等の弾性体１７は半径方向に仕切られ３層となる。 The first partition member 25 and the second partition member 26 are provided with a plurality of notches 22, and an elastic body 17 such as rubber is injected by injecting an elastic body 17 such as rubber from either the inner side or the outer peripheral side. 17, and the elastic body 17 such as rubber is partitioned in the radial direction by the first partition member 25 and the second partition member 26 to form three layers.
また、ゴム等の弾性体１７が充填されることで第一の仕切材２５、第二の仕切材２６の複数の切欠き２２が回り止め、抜け止めになる。 In addition, by filling the elastic body 17 such as rubber, the plurality of notches 22 of the first partition member 25 and the second partition member 26 are prevented from rotating and coming off.
本実施の形態の仕切材２７は、上記実施の形態２の仕切材１４と同じ切欠き２２が設けられた第一の仕切材２５、第二の仕切材２６を同心円状に２つ配置し、軸１と回転子マグネット５との間に充填されるゴム等の弾性体１７を半径方向に３層にしたものである。 The partition material 27 of this embodiment arranges two first partition materials 25 and second partition materials 26 provided with the same notches 22 as the partition material 14 of the second embodiment, in a concentric manner, An elastic body 17 such as rubber filled between the shaft 1 and the rotor magnet 5 is formed in three layers in the radial direction.
このように、第一の仕切材２５、第二の仕切材２６で、ゴム等の弾性体１７を半径方向に３層とすることで、実施の形態２の２層に比べて回転方向のバネ定数の変化を抑えつつ半径方向のバネ定数をさらに大きくできる。即ち、回転方向には柔らかく防振性能を維持したまま半径方向により硬くなり、磁気吸引力の影響を抑えることができ、より低騒音化が図れる。 In this way, the first partition member 25 and the second partition member 26 have three layers of elastic bodies 17 such as rubber in the radial direction, so that the springs in the rotational direction are compared with the two layers in the second embodiment. The spring constant in the radial direction can be further increased while suppressing changes in the constant. That is, it is soft in the rotational direction and harder in the radial direction while maintaining the vibration isolating performance, and the influence of the magnetic attractive force can be suppressed, and noise can be further reduced.
本実施の形態の一例として、複数の切欠き２２を設けた二つの第一の仕切材２５、第二の仕切材２６を同心円状に配置し、ゴム等の弾性体１７を３層にした電動機の回転子１００を示したが、３個以上の複数のリング状の仕切材を同心円状に配置し、ゴム等の弾性体１７を多層にすることで、回転方向のバネ定数の変化を抑えつつ半径方向のバネ定数をさらに大きくできることはいうまでもない。 As an example of the present embodiment, an electric motor in which two first partition members 25 and a second partition member 26 provided with a plurality of notches 22 are arranged concentrically and an elastic body 17 such as rubber is formed in three layers. Although the rotor 100 is shown, three or more ring-shaped partition members are arranged concentrically, and the elastic body 17 such as rubber is formed in a multi-layer, thereby suppressing a change in the spring constant in the rotation direction. Needless to say, the radial spring constant can be further increased.
また、図１５、図１６に示すように、同心円状に配置した第一の仕切材２５、第二の仕切材２６を連結部２８で連結し、一つの仕切材２７としたものを用いても同様の効果が得られる。 Further, as shown in FIGS. 15 and 16, the first partition member 25 and the second partition member 26 arranged concentrically may be connected by a connecting portion 28 to form one partition member 27. Similar effects can be obtained.
図１６に示す仕切材２７は、同心円状に配置され、複数の切欠き２２を備えた第一の仕切材２５、第二の仕切材２６を、一方または両方の軸方向端面に設けた複数の連結部２８で一体にしたものである。端面に形成された連結部２８は、金型への位置決めにもなる。 A partition member 27 shown in FIG. 16 is arranged concentrically, and includes a plurality of first partition members 25 and second partition members 26 each having a plurality of notches 22 provided on one or both axial end faces. The connecting portion 28 is integrated. The connecting portion 28 formed on the end surface also serves as a positioning to the mold.
ゴム等の弾性体１７を成形し一体になった後、連結部２８を切除し同心円状に配置した第一の仕切材２５、第二の仕切材２６を分離してもよい。 After the elastic body 17 such as rubber is molded and integrated, the first partition member 25 and the second partition member 26 arranged concentrically by cutting the connecting portion 28 may be separated.
なお、図１３乃至図１６のように、仕切材２７複数の切欠き２２を設けたので、軸１と回転子マグネット５をゴム等の弾性体で一体に成形し、その後に熱可塑性樹脂を注入しリング状の仕切材２７を成形することも可能である。これに関しては、実施の形態２で説明済みである。 13 to 16, since the partition member 27 has a plurality of notches 22, the shaft 1 and the rotor magnet 5 are integrally formed of an elastic body such as rubber, and then a thermoplastic resin is injected. A ring-shaped partition member 27 can be formed. This has been described in the second embodiment.
実施の形態５．
図１７は実施の形態５を示す図で、電動機の回転子１００の製造工程を示す図である。
Embodiment 5. FIG.
FIG. 17 is a diagram illustrating the fifth embodiment, and is a diagram illustrating a manufacturing process of the rotor 100 of the electric motor.
図１７により、電動機の回転子１００の製造工程の一例を説明する。
（１）ステップ１：メインマグネット６を、極配向しプラスチックマグネットで成形する。並行して、位置検出用マグネット７を成形する。
（２）ステップ２：メインマグネット６の脱磁を行う。並行して、位置検出用マグネット７の脱磁を行う。
（３）ステップ３：メインマグネット６と、位置検出用マグネット７とを熱可塑性樹脂８で一体に成形して回転子マグネット５とする。並行して、リング状の仕切材１４を熱可塑性樹脂を用いて成形する。並行して、加工した軸１を、軸１の外周のローレット２を覆うように熱可塑性樹脂３で成形する。
（４）ステップ４：軸１と、回転子マグネット５と、リング状の仕切材１４とを金型にセットする。
（５）ステップ５：金型にセットした、軸１と、回転子マグネット５と、リング状の仕切材１４とを、ゴム等の弾性体１７で一体に成形する。
（６）ステップ６：回転子マグネット５の着磁を行う。
（７）ステップ７：軸１に軸受３１（図１８参照）を組付ける。
An example of the manufacturing process of the rotor 100 of the electric motor will be described with reference to FIG.
(1) Step 1: The main magnet 6 is polar-oriented and molded with a plastic magnet. In parallel, the position detecting magnet 7 is formed.
(2) Step 2: The main magnet 6 is demagnetized. In parallel, the position detection magnet 7 is demagnetized.
(3) Step 3: The main magnet 6 and the position detection magnet 7 are integrally molded with the thermoplastic resin 8 to form the rotor magnet 5. In parallel, the ring-shaped partition member 14 is molded using a thermoplastic resin. In parallel, the processed shaft 1 is molded with the thermoplastic resin 3 so as to cover the knurl 2 on the outer periphery of the shaft 1.
(4) Step 4: The shaft 1, the rotor magnet 5, and the ring-shaped partitioning material 14 are set in a mold.
(5) Step 5: The shaft 1, the rotor magnet 5, and the ring-shaped partitioning material 14 set in the mold are integrally formed with an elastic body 17 such as rubber.
(6) Step 6: The rotor magnet 5 is magnetized.
(7) Step 7: Assemble the bearing 31 (see FIG. 18) on the shaft 1.
以上のような製造工程で電動機の回転子１００を製造することにより、電動機の回転子１００を効率よく製作することができる。 By manufacturing the rotor 100 of the electric motor by the manufacturing process as described above, the rotor 100 of the electric motor can be efficiently manufactured.
実施の形態６．
図１８は実施の形態６を示す図で、電動機２００の断面図である。
Embodiment 6 FIG.
FIG. 18 is a cross-sectional view of the electric motor 200 according to the sixth embodiment.
図１８に示すように、電動機２００は、固定子２９、実施の形態１乃至５のいずれかの電動機の回転子１００、軸受３１、ブラケット３２を備える。 As shown in FIG. 18, the electric motor 200 includes a stator 29, the rotor 100 of the electric motor according to any one of the first to fifth embodiments, a bearing 31, and a bracket 32.
図１８に示すように、軸受３１（２個）を、上記実施の形態１乃至５のいずれかの電動機の回転子１００の軸１に圧入固定する。このとき、軸受３１は、軸１に一体に形成された熱可塑性樹脂３の両端面に当たるまで圧入固定される。軸受３１が取り付けられた電動機の回転子１００を固定子２９の内側の空間に挿入する。固定子２９とブラケット３２で二つの軸受３１を保持するように、ブラケット３２を固定子２９に圧入し、電動機２００が完成する。 As shown in FIG. 18, two bearings 31 are press-fitted and fixed to the shaft 1 of the rotor 100 of the electric motor according to any one of the first to fifth embodiments. At this time, the bearing 31 is press-fitted and fixed until it hits both end faces of the thermoplastic resin 3 formed integrally with the shaft 1. The rotor 100 of the electric motor to which the bearing 31 is attached is inserted into the space inside the stator 29. The bracket 32 is press-fitted into the stator 29 so that the two bearings 31 are held by the stator 29 and the bracket 32, and the electric motor 200 is completed.
上記実施の形態１乃至５のいずれかの電動機の回転子１００を用いることで、電動機２００の品質が向上する（特に騒音面）。また、生産性が向上すると共に、製造コストを低減できる。 By using the rotor 100 of the electric motor according to any one of the first to fifth embodiments, the quality of the electric motor 200 is improved (particularly in terms of noise). Further, productivity can be improved and manufacturing cost can be reduced.
実施の形態７．
図１９は実施の形態７を示す図で、空気調和機３００の構成図である。
Embodiment 7 FIG.
FIG. 19 is a diagram illustrating the seventh embodiment, and is a configuration diagram of the air conditioner 300.
図１９に示すように、空気調和機３００は、室内機３３と、室外機３４とで構成される。室内機３３は室外機３４に接続される。室内機３３及び室外機３４は、送風機３５を備える。そして、送風機３５に実施の形態６の電動機２００を送風機用電動機として搭載する。 As shown in FIG. 19, the air conditioner 300 includes an indoor unit 33 and an outdoor unit 34. The indoor unit 33 is connected to the outdoor unit 34. The indoor unit 33 and the outdoor unit 34 include a blower 35. And the electric motor 200 of Embodiment 6 is mounted in the air blower 35 as an electric motor for air blowers.
近年の空気調和機３００は、低騒音化が進んでおり、実施の形態６の電動機２００を空気調和機３００の主用部品である送風機用電動機として用いることは好適である。 The air conditioner 300 in recent years has been reduced in noise, and it is preferable to use the electric motor 200 of Embodiment 6 as a blower motor that is a main part of the air conditioner 300.
実施の形態６の電動機２００を空気調和機３００の主用部品である送風機用電動機として用いることにより、空気調和機３００の送風機３５は、品質が向上（主に低騒音化）する。また、生産性が向上すると共に、製造コストを低減できる。 By using the electric motor 200 of Embodiment 6 as the electric motor for a blower that is a main part of the air conditioner 300, the quality of the blower 35 of the air conditioner 300 is improved (mainly noise reduction). Further, productivity can be improved and manufacturing cost can be reduced.
１ 軸、２ ローレット、３ 熱可塑性樹脂、４ 凸部、５ 回転子マグネット、６ メインマグネット、７ 位置検出用マグネット、８ 熱可塑性樹脂、９ 凸部、１０ 凹部、１１ 台座、１２ 凸部、１３ 段差、１４ 仕切材、１５ 凸部、１６ 突起、１７ ゴム等の弾性体、１８ 連結部、１９ 仕切材、２０ 穴、２１ 仕切材、２２ 切欠き、２３ 仕切材、２４ フランジ、２５ 第一の仕切材、２６ 第二の仕切材、２７ 仕切材、２８ 連結部、２９ 固定子、３１ 軸受、３２ ブラケット、３３ 室内機、３４ 室外機、３５ 送風機、１００ 電動機の回転子、２００ 電動機、３００ 空気調和機。 1 axis, 2 knurls, 3 thermoplastic resin, 4 convex part, 5 rotor magnet, 6 main magnet, 7 position detecting magnet, 8 thermoplastic resin, 9 convex part, 10 concave part, 11 pedestal, 12 convex part, 13 Step, 14 Partition material, 15 Convex portion, 16 Protrusion, 17 Elastic body such as rubber, 18 Connecting portion, 19 Partition material, 20 Hole, 21 Partition material, 22 Notch, 23 Partition material, 24 Flange, 25 First Partition material, 26 Second partition material, 27 Partition material, 28 Connecting portion, 29 Stator, 31 Bearing, 32 Bracket, 33 Indoor unit, 34 Outdoor unit, 35 Blower, 100 Motor rotor, 200 Motor, 300 Air Harmony machine.
Claims (12)
メインマグネットと、このメインマグネットの一方の軸方向端面の近傍に配置される位置検出マグネットとを熱可塑性樹脂で一体に成形して構成される回転子マグネットと、
前記軸と、前記回転子マグネットとの間に充填される弾性体で構成される連結部と、
この連結部を半径方向に多層に仕切るリング状の仕切材とを備えたことを特徴とする電動機の回転子。 The axis,
A rotor magnet configured by integrally molding a main magnet and a position detection magnet disposed in the vicinity of one axial end surface of the main magnet with a thermoplastic resin;
A connecting portion composed of an elastic body filled between the shaft and the rotor magnet;
An electric motor rotor comprising: a ring-shaped partition member that divides the connecting portion in multiple layers in the radial direction.
（１）メインマグネットを、極配向しプラスチックマグネットで成形し、並行して位置検出用マグネットを成形する第１の工程；
（２）前記メインマグネットと、前記位置検出用マグネットの脱磁を行う第２の工程；
（３）前記メインマグネットと、前記位置検出用マグネットとを熱可塑性樹脂で一体に成形して回転子マグネットとし、並行してリング状の仕切材を熱可塑性樹脂を用いて成形し、さらに並行して加工した軸を、該軸の外周を覆うように熱可塑性樹脂で成形する第３の工程；
（４）前記軸と、前記回転子マグネットと、前記仕切材とを金型にセットする第４の工程；
（５）前記金型にセットした前記軸と、前記回転子マグネットと、前記仕切材とを連結部で一体に成形する第５の工程；
（６）前記回転子マグネットの着磁を行う第６の工程；
（７）前記軸に軸受を組付ける第７の工程。 The manufacturing method of the rotor of the electric motor characterized by including the following processes.
(1) A first step in which a main magnet is pole-oriented and molded with a plastic magnet, and a position detecting magnet is molded in parallel;
(2) a second step of demagnetizing the main magnet and the position detecting magnet;
(3) The main magnet and the position detection magnet are integrally molded with a thermoplastic resin to form a rotor magnet, and a ring-shaped partition member is molded with the thermoplastic resin in parallel. A third step of molding the processed shaft with a thermoplastic resin so as to cover the outer periphery of the shaft;
(4) a fourth step of setting the shaft, the rotor magnet, and the partition member in a mold;
(5) A fifth step of integrally forming the shaft set in the mold, the rotor magnet, and the partition member at a connecting portion;
(6) A sixth step of magnetizing the rotor magnet;
(7) A seventh step of assembling a bearing to the shaft.
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| JP2007075739A JP4705065B2 (en) | 2007-03-23 | 2007-03-23 | Motor rotor, motor and air conditioner |
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| JP2007075739A JP4705065B2 (en) | 2007-03-23 | 2007-03-23 | Motor rotor, motor and air conditioner |
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| JP4705065B2 JP4705065B2 (en) | 2011-06-22 |
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| WO2015080077A1 (en) * | 2013-11-27 | 2015-06-04 | 三菱電機株式会社 | Electric motor rotor, electric motor, and air conditioner |
| JP2015220794A (en) * | 2014-05-14 | 2015-12-07 | 三菱電機株式会社 | Rotator of electric motor, and air conditioner |
| EP2811167A4 (en) * | 2012-01-31 | 2015-12-23 | Mitsubishi Electric Corp | Pump, refrigeration cycle device, and method for producing pump |
| US9698655B2 (en) | 2012-06-19 | 2017-07-04 | Mitsubishi Electric Corporation | Pump, method for manufacturing pump, and refrigeration cycle device |
| WO2019192805A1 (en) * | 2018-04-05 | 2019-10-10 | Cpt Zwei Gmbh | Rotor for an electric machine with integrated radial and axial vibration absorber |
| CN112018976A (en) * | 2019-05-29 | 2020-12-01 | 日本电产高科电机株式会社 | Rotor and method for manufacturing rotor |
| CN113169598A (en) * | 2018-12-20 | 2021-07-23 | 三菱电机株式会社 | Rotor, motor, blower, air conditioner, and method for manufacturing rotor |
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| JP2005102390A (en) * | 2003-09-24 | 2005-04-14 | Mitsubishi Electric Corp | Rotor of motor, manufacturing method for rotor of motor, resin-molding metal mold for rotor of motor, motor and air conditioner |
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| JP2002136007A (en) * | 2000-10-20 | 2002-05-10 | Fujitsu General Ltd | Rotor for motor and manufacturing method for the rotor |
| JP2005102390A (en) * | 2003-09-24 | 2005-04-14 | Mitsubishi Electric Corp | Rotor of motor, manufacturing method for rotor of motor, resin-molding metal mold for rotor of motor, motor and air conditioner |
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| EP2811167A4 (en) * | 2012-01-31 | 2015-12-23 | Mitsubishi Electric Corp | Pump, refrigeration cycle device, and method for producing pump |
| US9698655B2 (en) | 2012-06-19 | 2017-07-04 | Mitsubishi Electric Corporation | Pump, method for manufacturing pump, and refrigeration cycle device |
| CN105745822A (en) * | 2013-11-27 | 2016-07-06 | 三菱电机株式会社 | Electric motor rotor, electric motor, and air conditioner |
| JP6062068B2 (en) * | 2013-11-27 | 2017-01-18 | 三菱電機株式会社 | Electric motor and air conditioner |
| JPWO2015080077A1 (en) * | 2013-11-27 | 2017-03-16 | 三菱電機株式会社 | Electric motor and air conditioner |
| WO2015080077A1 (en) * | 2013-11-27 | 2015-06-04 | 三菱電機株式会社 | Electric motor rotor, electric motor, and air conditioner |
| JP2015220794A (en) * | 2014-05-14 | 2015-12-07 | 三菱電機株式会社 | Rotator of electric motor, and air conditioner |
| WO2019192805A1 (en) * | 2018-04-05 | 2019-10-10 | Cpt Zwei Gmbh | Rotor for an electric machine with integrated radial and axial vibration absorber |
| CN113169598A (en) * | 2018-12-20 | 2021-07-23 | 三菱电机株式会社 | Rotor, motor, blower, air conditioner, and method for manufacturing rotor |
| CN113169598B (en) * | 2018-12-20 | 2023-12-05 | 三菱电机株式会社 | Rotor, motor, blower, air conditioner, and method for manufacturing rotor |
| CN112018976A (en) * | 2019-05-29 | 2020-12-01 | 日本电产高科电机株式会社 | Rotor and method for manufacturing rotor |
| WO2021234822A1 (en) * | 2020-05-19 | 2021-11-25 | 三菱電機株式会社 | Rotor, electric motor, fan, and air conditioner |
| WO2021235017A1 (en) * | 2020-05-19 | 2021-11-25 | 三菱電機株式会社 | Rotor, electric motor, fan, and air conditioner |
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