JP2011234545A - Rotor of rotary electric machine - Google Patents
Rotor of rotary electric machine Download PDFInfo
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本発明は、回転電機の回転子の磁極構成に関する。 The present invention relates to a magnetic pole configuration of a rotor of a rotating electrical machine.
永久磁石式回転電機では、固定子と回転子の磁気変動に起因するコギングトルクが発生し、スムーズな回転を妨げるという問題がある。
このコギングトルクの低減を図った回転子の磁極構成として、軸方向に並べる磁石につき、周方向に所定のずらし角度（スキュー角θ）を設けて配置する構成が知られている。
In the permanent magnet type rotating electric machine, there is a problem that cogging torque is generated due to magnetic fluctuations between the stator and the rotor, and smooth rotation is prevented.
As a magnetic pole configuration of a rotor for reducing the cogging torque, a configuration is known in which magnets arranged in the axial direction are arranged with a predetermined shift angle (skew angle θ) in the circumferential direction.
図１２は、従来の回転電機の回転子の磁極において、スキュー角θを設けた構成を示す図である。１は磁石、７は回転子鉄心である。
図１２では、磁石１を軸方向に並べて配置する際、個々の磁石１の周方向位置に、所定のスキュー角θを設けるように配置して磁極を構成している。これにより、コギングトルクを周方向にわたって減少させている。
FIG. 12 is a diagram showing a configuration in which a skew angle θ is provided in a magnetic pole of a rotor of a conventional rotating electrical machine. 1 is a magnet and 7 is a rotor core.
In FIG. 12, when the magnets 1 are arranged side by side in the axial direction, the magnetic poles are configured by arranging them so as to provide a predetermined skew angle θ at the circumferential position of each magnet 1. As a result, the cogging torque is reduced in the circumferential direction.
従来、回転電機の回転子の磁極構成において、磁石のスキュー配置を製作する際には、以下のような課題があった。
磁極にスキュー角度を形成するためには、所定の位置に磁石をスキューさせながら配置する必要がある。そのため、通常は、位置決め治具を用いて製作する必要がある。
Conventionally, in the magnetic pole configuration of a rotor of a rotating electrical machine, there are the following problems when manufacturing a skew arrangement of magnets.
In order to form a skew angle in the magnetic pole, it is necessary to arrange the magnet while skewing it to a predetermined position. Therefore, it is usually necessary to manufacture using a positioning jig.
しかし、そのような特殊な治具を用いると、調整に時間がかかり、コストアップの要因となってしまう。
特許文献３には、図１３に示すとおり、回転子鉄心に位置決め用突起を設け、それに合わせて磁石を配置することで、位置決め治具を用いずにスキュー角度を実現する方法が開示されている。９は位置決め用突起である。
However, when such a special jig is used, it takes time for adjustment, which causes an increase in cost.
Patent Document 3 discloses a method of realizing a skew angle without using a positioning jig by providing a positioning projection on a rotor core and arranging a magnet in accordance therewith as shown in FIG. . Reference numeral 9 denotes a positioning projection.
しかし、この方法でも、回転子鉄心を軸方向に数個の列に分割し、各列ごとに周方向にずらした位置を特定して個別に位置決め用突起９を形成するという加工作業が必要となり、調整に時間がかかる。 However, even in this method, it is necessary to divide the rotor core into several rows in the axial direction, specify the positions shifted in the circumferential direction for each row, and individually form the positioning projections 9. , Adjustment takes time.
特に、大形の回転電機の場合には、図１４に示したとおり、回転子における磁石の貼り付け量が多くなる。そのため、スキュー配置の製作工程はさらに複雑となり、調整にかかる時間は多大になってしまう。 In particular, in the case of a large rotating electrical machine, the amount of magnets attached to the rotor increases as shown in FIG. For this reason, the manufacturing process of the skew arrangement is further complicated, and the time required for adjustment becomes great.
そこで、本発明の目的は、上記の課題を解決するべく、磁極のスキュー配置の形成を簡易に行うことができる回転電機の回転子の磁極を提供することである。 Accordingly, an object of the present invention is to provide a magnetic pole of a rotor of a rotating electrical machine that can easily form a skew arrangement of magnetic poles in order to solve the above-described problems.
前記の目的を達成するために、本発明によれば、回転子鉄心の外周に軸方向に複数並べられた磁石装着部材を有する回転子であって、複数の前記磁石装着部材のうち少なくとも１つは、他の前記磁石装着部材に対して周方向にズレる位置に基準点を設け、これら複数の前記磁石装着部材の前記基準点を軸方向に揃えて横並びに配置したことを特徴とする回転電機の回転子とする。 In order to achieve the above object, according to the present invention, there is provided a rotor having a plurality of magnet mounting members arranged in the axial direction on the outer periphery of the rotor core, and at least one of the plurality of magnet mounting members. The rotating electrical machine is characterized in that a reference point is provided at a position shifted in the circumferential direction with respect to the other magnet mounting member, and the reference points of the plurality of magnet mounting members are aligned side by side in the axial direction. Of the rotor.
また、本発明によれば、上記の構成において、前記磁石装着部材は、磁石が装着される面とは反対側の面に、前記基準点を通って、前記回転機鉄心に配置された際の前記回転機鉄心の軸方向に略直線となる突起を有し、前記回転子鉄心は、該突起が嵌着される直線溝を軸方向に有し、前記突起を前記直線溝に嵌着することにより、前記装着部材を前記回転子鉄心に配置することを特徴とする回転電機の回転子とする。 According to the present invention, in the above configuration, when the magnet mounting member is disposed on the rotating machine core through the reference point on the surface opposite to the surface on which the magnet is mounted. The rotor core has a protrusion that is substantially straight in the axial direction, and the rotor iron core has a linear groove in which the protrusion is fitted in the axial direction, and the protrusion is fitted in the linear groove. Thus, the mounting member is disposed on the rotor core to provide a rotor of a rotating electrical machine.
また、本発明によれば、上記の構成において、前記基準点の位置は、前記周方向の中心から所定のスキュー角度の半分の角度となる距離だけズラした位置であることを特徴とする回転電機の回転子とする。 According to the present invention, in the above configuration, the position of the reference point is a position shifted from the center in the circumferential direction by a distance that is a half of a predetermined skew angle. Of the rotor.
また、本発明によれば、上記の構成において、１つの前記装着部材に装着される前記磁石の数が、軸方向に複数であることを特徴とする回転電機の回転子とする。
また、本発明によれば、上記の構成において、複数の前記磁石のうち少なくとも１つは、他の前記磁石に対して周方向にズレる位置に基準点を位置づけた前記磁石であることを特徴とする回転電機の回転子とする。
According to the present invention, in the above configuration, the number of the magnets mounted on one mounting member is plural in the axial direction.
According to the present invention, in the above configuration, at least one of the plurality of magnets is the magnet having a reference point positioned at a position shifted in a circumferential direction with respect to the other magnets. The rotor of the rotating electrical machine.
また、本発明によれば、上記の構成において、前記基準点の位置は、前記周方向の中心から所定のスキュー角度の半分の角度となる距離だけズラした位置であることを特徴とする回転電機の回転子とする。 According to the present invention, in the above configuration, the position of the reference point is a position shifted from the center in the circumferential direction by a distance that is a half of a predetermined skew angle. Of the rotor.
本発明により、磁極のスキュー配置の形成を簡易に行うことができる回転電機の回転子の磁極を実現することができる。 According to the present invention, it is possible to realize a magnetic pole of a rotor of a rotating electrical machine that can easily form a skew arrangement of magnetic poles.
実施の形態を以下の実施例で説明する。以下の説明で従来の構造と同一部位には同一の符号を付した。 Embodiments will be described in the following examples. In the following description, the same reference numerals are assigned to the same parts as those of the conventional structure.
図１は、本発明の第１の実施例の回転電機の回転子の構成を示す図である。１は磁石、２は磁石装着部材（磁性材の座）、３は磁石装着部材の突起（凸部）、４は凸部の中心位置、５は磁極の中心位置である。 FIG. 1 is a diagram showing a configuration of a rotor of a rotating electrical machine according to a first embodiment of the present invention. Reference numeral 1 denotes a magnet, 2 denotes a magnet mounting member (magnetic material seat), 3 denotes a projection (convex portion) of the magnet mounting member, 4 denotes a central position of the convex portion, and 5 denotes a central position of the magnetic pole.
磁石１は、磁石装着部材２の上に接着等の手段を用いて装着される。
磁石装着部材２には、凸部３が、回転子鉄心に固着する面（磁石１を装着する面とは反対側の面）に、回転機鉄心に配置された際の回転機鉄心の軸方向に向かって略直線となるように形成されている。
The magnet 1 is mounted on the magnet mounting member 2 using means such as adhesion.
In the magnet mounting member 2, the projection 3 is fixed to the rotor core (the surface opposite to the surface on which the magnet 1 is mounted) on the surface of the rotor core when the rotor 3 is disposed on the surface of the rotor core. It forms so that it may become a substantially straight line toward.
図２は、図１のＡ方向から見た場合の磁極の構成である。図２において、凸部３の中心位置４（基準点）は、磁極の中心位置５に対して所定のスキュー角度θ（機械角）の半分の角度（θ／２）となる距離だけ、回転機鉄心に配置された際の回転機鉄心の周方向にズレた位置に設けられている。 FIG. 2 shows the configuration of the magnetic poles when viewed from the direction A in FIG. In FIG. 2, the center position 4 (reference point) of the convex portion 3 is the distance from the center position 5 of the magnetic pole to a half angle (θ / 2) of a predetermined skew angle θ (mechanical angle). It is provided at a position shifted in the circumferential direction of the rotating machine iron core when arranged on the iron core.
図３は、図１のＢ方向から見た場合の磁極の構成である。図３において、凸部３の中心位置４は、磁極の中心位置５に対して所定のスキュー角度θの半分の角度（θ／２）となる距離だけ、回転機鉄心に配置された際の回転機鉄心の周方向にズレた位置に設けられている。 FIG. 3 shows the configuration of the magnetic poles when viewed from the direction B of FIG. In FIG. 3, the center position 4 of the convex portion 3 is rotated when it is arranged on the rotating machine core by a distance that is half the predetermined skew angle θ (θ / 2) with respect to the center position 5 of the magnetic pole. It is provided at a position shifted in the circumferential direction of the machine core.
ここで、Ａ方向から見た場合の凸部３の中心位置４（図２）と、Ｂ方向から見た場合の凸部３の中心位置４（図３）とは、ともに磁極の中心位置５から、回転機鉄心に配置された際の回転機鉄心の周方向にズレている。しかし、そのズレる方向は、磁極の中心位置５を挟んで、Ａ方向から見た場合（図２）とＢ方向から見た場合（図３）とで反対になっている。このことを図４によりさらに説明する。 Here, the central position 4 (FIG. 2) of the convex part 3 when viewed from the A direction and the central position 4 (FIG. 3) of the convex part 3 when viewed from the B direction are both the central position 5 of the magnetic pole. From, it has shifted | deviated to the circumferential direction of the rotary machine core at the time of arrange | positioning at a rotary machine core. However, the direction of deviation is opposite between when viewed from the A direction (FIG. 2) and when viewed from the B direction (FIG. 3) across the center position 5 of the magnetic pole. This will be further described with reference to FIG.
図４は、磁石装着部材２に磁石１を装着してそれぞれ構成された磁極６ａ、６ｂを、それぞれの凸部３の中心位置４が一致するように配置した際に、磁極６ａ、６ｂが回転機鉄心に配置された際の回転機鉄心の周方向にズレるように、磁極の向きを入れ替えて（磁極６ｂは回転機鉄心に配置された際の回転機鉄心の軸方向の前後の向きを入れ替え、磁極６ａは該入れ替えを行わない）、配置したことを示す図である。５ａ、５ｂは磁極の中心位置、６ａ、６ｂは磁極である。 FIG. 4 shows that the magnetic poles 6a and 6b are rotated when the magnetic poles 6a and 6b configured by mounting the magnet 1 on the magnet mounting member 2 are arranged so that the center positions 4 of the respective protrusions 3 coincide with each other. Change the direction of the magnetic poles so that they are shifted in the circumferential direction of the rotating machine core when placed on the machine core (the magnetic pole 6b swaps the axial direction of the rotating machine core when it is placed on the rotating machine core. The magnetic pole 6a is not replaced). Reference numerals 5a and 5b denote magnetic pole center positions, and 6a and 6b denote magnetic poles.
図４では、磁極６ａ、６ｂのそれぞれの凸部３の中心位置４は一致しており、略直線を形成している。また、磁極６ａの中心位置５ａは、磁極６ｂの中心位置５ｂに対して所定のスキュー角度（θ）を形成している。 In FIG. 4, the center positions 4 of the convex portions 3 of the magnetic poles 6a and 6b are coincident with each other and form a substantially straight line. Further, the center position 5a of the magnetic pole 6a forms a predetermined skew angle (θ) with respect to the center position 5b of the magnetic pole 6b.
次に、磁極を回転子鉄心に配置する際の態様について説明する。
図５は、軸方向に溝部８が設けられた回転子鉄心７を示す図である。７は回転子鉄心、８は回転子鉄心７の溝部である。
Next, the mode at the time of arrange | positioning a magnetic pole in a rotor core is demonstrated.
FIG. 5 is a view showing the rotor core 7 in which the groove portion 8 is provided in the axial direction. 7 is a rotor core, and 8 is a groove of the rotor core 7.
ここで、溝部８（直線溝）とは、回転子鉄心７の軸方向に略直線として形成された溝であり、後述のとおり、磁極６ａ、６ｂの凸部３が嵌着される。
図６は、磁極６ａ、６ｂにつき、図４と同様に、それぞれの凸部３の中心位置４が一致するように配置した際に、磁極６ａ、６ｂが回転機鉄心の周方向にズレるように、磁極の向きを変えて（磁極６ｂは回転機鉄心の軸方向の前後の向きを入れ替え、磁極６ａは該入れ替えを行わない）、回転子鉄心７に配置したことを示す図である。
Here, the groove portion 8 (straight groove) is a groove formed as a substantially straight line in the axial direction of the rotor core 7, and the convex portions 3 of the magnetic poles 6a and 6b are fitted thereto as described later.
FIG. 6 shows that the magnetic poles 6a and 6b are displaced in the circumferential direction of the rotating machine core when the magnetic poles 6a and 6b are arranged so that the center positions 4 of the convex portions 3 coincide with each other. FIG. 4 is a view showing that the magnetic poles are arranged on the rotor core 7 by changing the direction of the magnetic poles (the magnetic pole 6b is switched in the axial direction of the rotating machine core and the magnetic pole 6a is not replaced).
このとき、磁極６ａ、６ｂのそれぞれの凸部３を溝部８に沿って嵌め合わせることにより、図４と同様に、磁極６ａは、磁極６ｂに対して所定のスキュー角度を形成して回転子鉄心７に配置される。 At this time, by fitting the respective convex portions 3 of the magnetic poles 6a and 6b along the groove portion 8, the magnetic pole 6a forms a predetermined skew angle with respect to the magnetic pole 6b so as to form a rotor core as in FIG. 7 is arranged.
図７は、図６の状態から磁極部分を抜き出した概略の平面図である。このように、磁極６ａ、６ｂにはスキュー角度が形成される。
なお、磁極６ａ、６ｂを回転子鉄心７に取り付けるには、ボルト固定を行う場合や、凸部３と溝部８を楔状にして勘合する方法などがあるがここでは図示しない。また、磁極６ａ、６ｂの表面には、磁石の飛散を防止するためにガラスやカーボン繊維などによりバインドを行ったり、非磁性材のカバーで覆ったりするが、ここでは図示しない。
FIG. 7 is a schematic plan view of the magnetic pole portion extracted from the state of FIG. Thus, skew angles are formed in the magnetic poles 6a and 6b.
In order to attach the magnetic poles 6a and 6b to the rotor core 7, there are a case where bolts are fixed and a method in which the convex portion 3 and the groove portion 8 are wedge-fitted and are not shown here. Further, the surfaces of the magnetic poles 6a and 6b are bound with glass or carbon fiber in order to prevent scattering of the magnets or covered with a non-magnetic material cover, which is not shown here.
かくして本発明の第１の実施例によれば、凸部３の中心位置４は、回転機鉄心に配置された際の回転機鉄心の周方向の中心から、所定のスキュー角度の半分の角度（θ／２）となる距離だけズラした位置に設けられている。 Thus, according to the first embodiment of the present invention, the center position 4 of the convex portion 3 is an angle half the predetermined skew angle from the center in the circumferential direction of the rotating machine core when it is arranged on the rotating machine core ( It is provided at a position shifted by a distance of θ / 2).
そのため、それぞれの凸部３の中心位置４が一致するように配置した際に、磁極６ａ、６ｂが回転機鉄心の周方向にズレるように、磁極の向きを入れ替えて（磁極６ｂは回転機鉄心の軸方向の前後の向きを入れ替え、磁極６ａは該入れ替えを行わない）、回転子鉄心７に配置することで、磁極６ａの中心位置５ａと、磁極６ｂの中心位置５ｂとが、所定のスキュー角度（θ＝「θ／２」＋「θ／２」）を形成することとなり、磁極６ａと６ｂをスキュー配置することができる。 Therefore, the magnetic poles 6a and 6b are changed in direction so that the magnetic poles 6a and 6b are displaced in the circumferential direction of the rotating machine core when the center positions 4 of the respective protrusions 3 are aligned with each other (the magnetic pole 6b is the rotating machine core). The magnetic pole 6a is not exchanged), and the central position 5a of the magnetic pole 6a and the central position 5b of the magnetic pole 6b are set to have a predetermined skew. An angle (θ = “θ / 2” + “θ / 2”) is formed, and the magnetic poles 6a and 6b can be skewed.
従って、本発明の実施例では、位置決め治具のような特殊な治具を不要にでき、また、回転子鉄心における周方向のズレた位置を個別に特定する必要もないため、回転子の磁極のスキュー配置を簡易に行うことができる。 Therefore, in the embodiment of the present invention, a special jig such as a positioning jig can be dispensed with, and it is not necessary to individually specify the position in the circumferential direction of the rotor core. The skew arrangement can be easily performed.
さらに、回転子鉄心７に溝部８が形成されていることから、磁極の向きを変えて（磁極６ｂは回転機鉄心の軸方向の前後の向きを入れ替え、磁極６ａは該入れ替えを行わない）、それぞれの凸部３を溝部８に沿って嵌着するだけで、凸部３同士が回転子鉄心７の軸方向に略直線を形成し、それぞれの凸部３の中心位置４が一致して、磁極が回転子鉄心の周方向にズレるため、簡易にスキュー配置を実現することができる。 Further, since the groove portion 8 is formed in the rotor core 7, the direction of the magnetic pole is changed (the magnetic pole 6b replaces the front and rear directions in the axial direction of the rotating machine core, and the magnetic pole 6a does not perform the replacement). Just by fitting the respective convex portions 3 along the groove portions 8, the convex portions 3 form a substantially straight line in the axial direction of the rotor core 7, and the center positions 4 of the respective convex portions 3 are matched, Since the magnetic poles are displaced in the circumferential direction of the rotor core, a skew arrangement can be easily realized.
加工作業としては、回転子鉄心７に溝部８を形成し、磁石装着部材２に凸部３を形成することが必要である。しかし、磁石装着部材２の凸部３は、それぞれの磁石装着部材２において同じ場所に形成すれば良いため、位置決め治具のような特殊な治具は不要であり、また、個々のスキュー角度を特定して回転子鉄心７を加工する必要もないため、簡易な形成が可能となる。 As processing operations, it is necessary to form the groove 8 in the rotor core 7 and form the convex 3 in the magnet mounting member 2. However, since the convex portion 3 of the magnet mounting member 2 may be formed at the same location in each magnet mounting member 2, a special jig such as a positioning jig is not required, and each skew angle can be adjusted. Since it is not necessary to specify and process the rotor core 7, it can be easily formed.
次に、大形の回転電機の回転子に適用した場合の本発明の第２の実施例について説明する。
図８および図９は、磁極６ａ〜ｄにつき、図６と同様に回転子鉄心７に配置した状態から、磁極部分を抜き出した概略の平面図である。６ｃ、６ｄは磁極である。
Next, a second embodiment of the present invention when applied to a rotor of a large rotating electrical machine will be described.
8 and 9 are schematic plan views in which the magnetic pole portions are extracted from the state where the magnetic poles 6a to 6d are arranged on the rotor core 7 as in FIG. 6c and 6d are magnetic poles.
図８では、磁極６ａと６ｂは、回転子鉄心の軸方向の前後の向きを入れ替えて配置されている。磁極６ｂと６ｃは、該入れ替えを行わずに配置されている。磁極６ｃと６ｄは、該入れ替えを行って配置されている。この場合には、磁極６ａ、６ｄと６ｂ、６ｃとの間にスキュー角度が形成されている。 In FIG. 8, the magnetic poles 6 a and 6 b are arranged with the front and rear directions in the axial direction of the rotor core being switched. The magnetic poles 6b and 6c are arranged without performing the replacement. The magnetic poles 6c and 6d are arranged so as to be exchanged. In this case, a skew angle is formed between the magnetic poles 6a and 6d and 6b and 6c.
図９では、磁極６ａ〜ｄのそれぞれにつき、交互に回転子鉄心の軸方向の前後を入れ替えて配置されている。この場合には、磁極６ａ〜ｄのそれぞれにつき、スキュー角度が形成されている。 In FIG. 9, the magnetic poles 6a to 6d are alternately arranged in the axial direction of the rotor core. In this case, a skew angle is formed for each of the magnetic poles 6a to 6d.
図１０は、図８の磁極６ａ〜ｄの配列を適用した大形の回転電機の回転子を示す図である。大形の回転電機の回転子において、各磁極にスキュー角度が形成されている。
かくして本発明の第２の実施例によれば、大形の回転電機の回転子であって、磁石の貼り付け量が多大となり、回転子鉄心のサイズが大きくなった場合であっても、磁極の向きを変えて（磁極６ｂは回転機鉄心の軸方向の前後の向きを入れ替え、磁極６ａは該入れ替えを行わない）、それぞれの凸部３を溝部８に沿って嵌着するだけで、それぞれの凸部３の中心位置４が一致し、凸部３同士が回転子鉄心７の軸方向に略直線を形成し、磁極が回転子鉄心の周方向にズレるため、簡易にスキュー配置を実現することができる。
FIG. 10 is a diagram showing a rotor of a large rotating electric machine to which the arrangement of the magnetic poles 6a to 6d of FIG. 8 is applied. In a rotor of a large rotating electric machine, a skew angle is formed at each magnetic pole.
Thus, according to the second embodiment of the present invention, even in the case of a rotor of a large rotating electric machine, even when the amount of magnets attached becomes large and the size of the rotor core becomes large, the magnetic pole (The magnetic pole 6b replaces the front and rear directions in the axial direction of the rotating machine core, and the magnetic pole 6a does not perform the replacement), and only the respective protrusions 3 are fitted along the groove portions 8, respectively. Since the center positions 4 of the projections 3 coincide with each other, the projections 3 form a substantially straight line in the axial direction of the rotor core 7, and the magnetic poles deviate in the circumferential direction of the rotor core 7. be able to.
従って、大形の回転電機の回転子においても、第１の実施例と同様に、位置決め治具などの特殊な治具を不要にでき、また、回転子鉄心における周方向のズラした位置を特定する必要もないため、磁極のスキュー配置を簡易に行うことができる。 Therefore, as in the first embodiment, a special jig such as a positioning jig can be dispensed with in the rotor of a large rotating electrical machine, and the circumferentially displaced position in the rotor core can be specified. Therefore, the skew arrangement of the magnetic poles can be easily performed.
特に、図８および９のとおり、磁極の向きを適宜入れ替えることにより、様々なスキュー配置のパターンを簡易に行うことができる。
最後に、１つの磁石装着部材２に装着する磁石１の数を複数にした場合の本発明の第３の実施例について説明する。
In particular, as shown in FIGS. 8 and 9, various skew arrangement patterns can be easily performed by appropriately changing the direction of the magnetic poles.
Finally, a description will be given of a third embodiment of the present invention in which a plurality of magnets 1 are mounted on one magnet mounting member 2.
図１１は、凸部３の形成された１つの磁石装着部材２に、複数の磁石１ａ〜ｃを装着した図である。１ａ〜ｃは磁石である。このような１つの磁石装着部材２に複数の磁石１ａ〜ｃを装着して形成した磁極を用いて、第１および２の実施例のとおり、磁極を適宜入れ替えて配置することで、様々なスキュー配置を簡易に実現できる。 FIG. 11 is a diagram in which a plurality of magnets 1 a to 1 c are mounted on one magnet mounting member 2 on which the convex portion 3 is formed. 1a-c are magnets. By using magnetic poles formed by mounting a plurality of magnets 1a to 1c on such a single magnet mounting member 2, as shown in the first and second embodiments, the magnetic poles are appropriately exchanged and arranged, so that various skews are provided. Arrangement can be realized easily.
かくして本発明の第３の実施例によれば、磁石のサイズを大きくするには製作上の限度があるため、複数の磁石１ａ〜ｃをまとめて１つの磁石装着部材２に装着することで、大形の回転電機の製作において、磁石装着部材２の製作数を多くすることなく、磁極を形成でき、容易にスキュー配置を実現することができる。 Thus, according to the third embodiment of the present invention, since there is a manufacturing limit to increase the size of the magnet, by attaching a plurality of magnets 1a to 1c together to one magnet mounting member 2, In the manufacture of a large rotating electrical machine, the magnetic poles can be formed without increasing the number of magnet mounting members 2 manufactured, and the skew arrangement can be easily realized.
なお、上記の第１から３の実施例では、磁極の向きを変えて（磁極６ｂは回転機鉄心の軸方向の前後の向きを入れ替え、磁極６ａは該入れ替えを行わない）配置する際に、磁石装着部材２の凸部３を溝部８に嵌着させることで、凸部３同士が回転子鉄心７の軸方向に略直線を形成し、それぞれの凸部３の中心位置４が一致して、磁極が回転子鉄心の周方向にズレるため、スキュー配置を実現することが容易となっている。 In the above first to third embodiments, when changing the direction of the magnetic pole (the magnetic pole 6b replaces the front and rear directions in the axial direction of the rotating machine core and the magnetic pole 6a does not perform the replacement), By fitting the convex portion 3 of the magnet mounting member 2 into the groove portion 8, the convex portions 3 form a substantially straight line in the axial direction of the rotor core 7, and the center positions 4 of the respective convex portions 3 coincide with each other. Since the magnetic poles are displaced in the circumferential direction of the rotor core, it is easy to realize the skew arrangement.
しかしながら、必ずしも凸部３や溝部８を形成する必要はない。磁石装着部材２には、回転子鉄心の周方向の中心位置からズレた位置（凸部３の中心位置４の線上）に基準点となるもの（例えば、何らかの印など）が形成されていればよい。 However, it is not always necessary to form the convex portion 3 and the groove portion 8. If the magnet mounting member 2 is formed with a reference point (for example, some mark) at a position shifted from the circumferential center position of the rotor core (on the line of the center position 4 of the convex portion 3). Good.
その場合、それぞれの磁極の磁石装着部材２の基準点が一致するように回転機鉄心７に配置した際に、それぞれの磁極が回転機鉄心７の周方向にズレるように、それぞれの磁極の向きを変えて配置すれば、位置決め治具のような特殊な治具を不要にでき、また、回転子鉄心における周方向のズラした位置を特定する必要なく、回転子の磁極のスキュー配置を簡易に行うことができる。 In that case, the orientation of each magnetic pole is such that each magnetic pole is displaced in the circumferential direction of the rotary machine core 7 when the magnetic poles are arranged on the rotary machine core 7 so that the reference points of the magnet mounting members 2 of the magnetic poles coincide with each other. If the position is changed, a special jig such as a positioning jig can be dispensed with, and the skew arrangement of the magnetic poles of the rotor can be simplified without the need to specify a circumferentially displaced position in the rotor core. It can be carried out.
これらの印は、例えば、磁石装着部材の回転子鉄心の軸方向の両端において、周方向の中心からずれた位置に印を付けることでもよい。この印が一致するように、磁極の向きを変えて（１つの磁極は回転機鉄心の軸方向の前後の向きを入れ替え、もう一方の磁極は該入れ替えを行わない）配置すれば、回転子の磁極のスキュー配置を簡易に行うことができる。 For example, these marks may be marked at positions shifted from the center in the circumferential direction at both axial ends of the rotor core of the magnet mounting member. If the direction of the magnetic poles is changed so that these marks coincide with each other (one magnetic pole replaces the front and rear directions in the axial direction of the rotating machine core, and the other magnetic pole does not perform the replacement), The skew arrangement of the magnetic poles can be performed easily.
そのほか、例えば、磁極の向きを変えて配置する際に、それぞれの磁極の回転子鉄心の周方向のズレた位置が一致するように、一方の磁石装着部材の軸方向の端部に印としての凸部と、該端部と接触する他方の磁石装着部材の軸方向の端部に印としての凹部を設け、この凸部と凹部とを嵌め合わせて配置することで、回転子の磁極のスキュー配置を簡易に行うことができる。 In addition, for example, when changing the orientation of the magnetic poles, the axial end of one magnet mounting member is marked as a mark so that the circumferentially displaced positions of the rotor cores of the magnetic poles coincide with each other. A concave portion as a mark is provided at the end portion in the axial direction of the convex portion and the other magnet mounting member in contact with the end portion, and the convex portion and the concave portion are fitted to each other, thereby arranging the skew of the rotor magnetic pole. Arrangement can be performed easily.
また、上記の実施例では、磁石装着部材２を使用する構成について説明したが、必ずしも磁石装着部材２を使用する必要はない。磁石１自身に基準点となるもの（例えば、何らかの印など）を回転子鉄心の周方向の中心からズレた位置に形成してもよい。 In the above-described embodiment, the configuration using the magnet mounting member 2 has been described. However, the magnet mounting member 2 is not necessarily used. The magnet 1 itself may be formed with a reference point (for example, some mark) at a position displaced from the circumferential center of the rotor core.
その場合、それぞれの磁石の印（基準点）が一致するように回転機鉄心に配置した際に、それぞれの磁石が回転機鉄心の周方向にズレるように、それぞれの磁石の向きを変えて配置すれば、上記の第１から３の実施例と同じ作用効果を奏することができる。 In that case, change the direction of each magnet so that each magnet is displaced in the circumferential direction of the rotating machine core when it is arranged on the rotating machine core so that the marks (reference points) of each magnet match. If it does, there can exist the same effect as said 1st-3rd Example.
１ 磁石
１ａ〜ｃ （複数配置用）磁石
２ 磁石装着部材
３ 磁石装着部材の突起（凸部）
４ 凸部の中心位置
５ 磁極の中心位置
６ａ〜ｄ 磁極
７ 回転子鉄心
８ 溝部
９ 位置決め用突起
DESCRIPTION OF SYMBOLS 1 Magnet 1a-c (For multiple arrangement | positioning) Magnet 2 Magnet mounting member 3 Protrusion (convex part) of a magnet mounting member
4 Center position of convex part 5 Center position of magnetic poles 6a to d Magnetic pole 7 Rotor core 8 Groove part 9 Positioning projection
Claims (6)
複数の前記磁石装着部材のうち少なくとも１つは、他の前記磁石装着部材に対して周方向にズレる位置に基準点を設け、これら複数の前記磁石装着部材の前記基準点を軸方向に揃えて横並びに配置したことを特徴とする回転電機の回転子。 A rotor having magnet mounting members arranged in the axial direction on the outer periphery of the rotor core,
At least one of the plurality of magnet mounting members is provided with a reference point at a position shifted in the circumferential direction with respect to the other magnet mounting member, and the reference points of the plurality of magnet mounting members are aligned in the axial direction. A rotor of a rotating electrical machine characterized by being arranged side by side.
前記磁石装着部材は、磁石が装着される面とは反対側の面に、前記基準点を通って、前記回転機鉄心に配置された際の前記回転機鉄心の軸方向に略直線となる突起を有し、
前記回転子鉄心は、該突起が嵌着される直線溝を軸方向に有し、
前記突起を前記直線溝に嵌着することにより、前記装着部材を前記回転子鉄心に配置することを特徴とする回転電機の回転子。 In the rotor of the rotating electrical machine according to claim 1,
The magnet mounting member is a projection that is substantially linear in the axial direction of the rotating machine core when the magnet mounting member is disposed on the rotating machine core through the reference point on the surface opposite to the surface on which the magnet is mounted. Have
The rotor core has a linear groove in the axial direction in which the protrusion is fitted;
A rotor of a rotating electrical machine, wherein the mounting member is disposed on the rotor core by fitting the protrusion into the linear groove.
前記基準点の位置は、前記周方向の中心から所定のスキュー角度の半分の角度となる距離だけズラした位置であることを特徴とする回転電機の回転子。 In the rotor of the rotary electric machine according to claim 1 or 2,
The rotor of a rotating electrical machine, wherein the position of the reference point is a position shifted from the center in the circumferential direction by a distance that is a half of a predetermined skew angle.
１つの前記装着部材に装着される前記磁石の数が、軸方向に複数であることを特徴とする回転電機の回転子。 In the rotor of the rotary electric machine according to any one of claims 1 to 3,
A rotor of a rotating electrical machine, wherein the number of magnets mounted on one mounting member is plural in the axial direction.
複数の前記磁石のうち少なくとも１つは、他の前記磁石に対して周方向にズレる位置に基準点を位置づけた前記磁石であることを特徴とする回転電機の回転子。 A rotor having a plurality of magnets arranged in the axial direction on the outer periphery of the rotor core;
At least one of the plurality of magnets is the magnet in which a reference point is positioned at a position shifted in the circumferential direction with respect to the other magnets.
前記基準点の位置は、前記周方向の中心から所定のスキュー角度の半分の角度となる距離だけズラした位置であることを特徴とする回転電機の回転子。
The rotor of the rotating electrical machine according to claim 5,
The rotor of a rotating electrical machine, wherein the position of the reference point is a position shifted from the center in the circumferential direction by a distance that is a half of a predetermined skew angle.
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| JP2014180094A (en) * | 2013-03-14 | 2014-09-25 | Hitachi Industrial Equipment Systems Co Ltd | Permanent magnet rotary electric machine and elevator driving winch |
| CN110896255A (en) * | 2018-09-12 | 2020-03-20 | 斯维奇传动系统有限公司 | Permanent magnet module for an electric machine |
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