JP2021027666A - Slotless rotary electric machine - Google Patents
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- 238000009413 insulation Methods 0.000 description 4
- 239000004020 conductor Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
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Abstract
Description
本発明は、スロットレス回転電機に関するものである。 The present invention relates to a slotless rotary electric machine.
従来、スロットレス回転電機としては、例えば、内周面を有する固定部材と、固定部材の内周面に沿って軸方向に延びる軸方向コイル部と１対の軸方向コイル部同士を周方向に連結するコイルエンド部とを有するコイルを備えたものがある（例えば、特許文献１参照）。スロットレス回転電機では、コイルエンド部にて連結された軸方向コイル部同士の周方向の間にティースが配置されずに他の相の軸方向コイル部が配置される。 Conventionally, as a slotless rotary electric machine, for example, a fixing member having an inner peripheral surface, an axial coil portion extending in the axial direction along the inner peripheral surface of the fixing member, and a pair of axial coil portions are arranged in the circumferential direction. Some are provided with a coil having a coil end portion to be connected (see, for example, Patent Document 1). In the slotless rotary electric machine, the teeth are not arranged between the circumferential directions of the axial coil portions connected at the coil end portion, but the axial coil portions of other phases are arranged.
しかしながら、上記のようなスロットレス回転電機では、固定部材に軸方向コイル部と周方向に係合するティース等がなく、軸方向コイル部にロータの永久磁石による磁束が鎖交しつつ通過する際の力が掛かることで、軸方向コイル部が周方向にずれてしまう虞がある。なお、軸方向コイル部の周方向のずれは、スロットレス回転電機のトルクリップルを増大させる原因となる。 However, in the slotless rotary electric machine as described above, when the fixing member does not have a tooth or the like that engages with the axial coil portion in the circumferential direction, and the magnetic flux due to the permanent magnet of the rotor passes through the axial coil portion while interlinking. There is a risk that the axial coil portion will be displaced in the circumferential direction due to the force of. The deviation of the axial coil portion in the circumferential direction causes an increase in torque ripple of the slotless rotary electric machine.
本発明は、上記問題点を解決するためになされたものであって、その目的は、軸方向コイル部の周方向のずれを抑えることができるスロットレス回転電機を提供することにある。 The present invention has been made to solve the above problems, and an object of the present invention is to provide a slotless rotary electric machine capable of suppressing a deviation in the circumferential direction of an axial coil portion.
上記課題を解決するスロットレス回転電機（１１）は、周面を有する固定部材（１５）と、前記固定部材の周面に沿って軸方向に延びる軸方向コイル部（２１，２１ｕ，２１ｖ，２１ｗ）と１対の前記軸方向コイル部同士を周方向に連結するコイルエンド部（２２，２２ｕ，２２ｖ，２２ｗ）とを有するコイル（１６，１６ｕ，１６ｖ，１６ｗ）とを備え、前記コイルエンド部にて連結された前記軸方向コイル部同士の周方向の間には他の相の前記軸方向コイル部が配置されたスロットレス回転電機（１１）であって、前記固定部材の周面には、前記コイルを構成する線材（２３）の直径以下の突出量で径方向に突出して前記線材と周方向に係合する突起（３１）が設けられる。 The slotless rotary electric machine (11) for solving the above problems includes a fixing member (15) having a peripheral surface and an axial coil portion (21,21u, 21v, 21w) extending axially along the peripheral surface of the fixing member. ) And a coil (16, 16u, 16v, 16w) having a coil end portion (22, 22u, 22v, 22w) that connects the axial coil portions to each other in the circumferential direction, and the coil end portion. A slotless rotary electric machine (11) in which the axial coil portions of other phases are arranged between the circumferential directions of the axial coil portions connected by the above, and on the peripheral surface of the fixing member. A protrusion (31) that protrudes in the radial direction and engages with the wire in the circumferential direction is provided with a protrusion amount equal to or less than the diameter of the wire (23) constituting the coil.
同構成によれば、固定部材の周面には、前記コイルを構成する線材の直径以下の突出量で径方向に突出して前記線材と周方向に係合する突起が設けられるため、軸方向コイル部が周方向に移動してしまうことが抑えられる。よって、例えば、トルクリップルの増大を抑制することができる。 According to the same configuration, the peripheral surface of the fixing member is provided with a protrusion that protrudes in the radial direction with a protrusion amount equal to or less than the diameter of the wire rod constituting the coil and engages with the wire rod in the circumferential direction. It is possible to prevent the portion from moving in the circumferential direction. Therefore, for example, an increase in torque ripple can be suppressed.
以下、スロットレス回転電機の一実施形態を図１〜図９に従って説明する。
図１に示すように、スロットレス回転電機１１は、センターピース１２と、センターピース１２に固定されたステータ１３と、センターピース１２に対して回転可能に支持されたロータ１４とを備える。
Hereinafter, an embodiment of the slotless rotary electric machine will be described with reference to FIGS. 1 to 9.
As shown in FIG. 1, the slotless rotary electric machine 11 includes a center piece 12, a stator 13 fixed to the center piece 12, and a rotor 14 rotatably supported by the center piece 12.
センターピース１２は、略円筒状の円筒部１２ａと該円筒部１２ａの軸方向一端側から径方向外側の延びるフランジ部１２ｂとを有する。
ステータ１３は、磁性板材が積層されてなる略円盤状の固定部材としてのステータコア１５と、該ステータコア１５に固定されたコイル１６とを有する。ステータ１３は、ステータコア１５の中央孔１５ａがセンターピース１２の円筒部１２ａに外嵌された状態で固定されている。
The center piece 12 has a substantially cylindrical cylindrical portion 12a and a flange portion 12b extending radially outward from one end side in the axial direction of the cylindrical portion 12a.
The stator 13 has a stator core 15 as a substantially disk-shaped fixing member formed by laminating magnetic plate materials, and a coil 16 fixed to the stator core 15. The stator 13 is fixed in a state where the central hole 15a of the stator core 15 is fitted onto the cylindrical portion 12a of the center piece 12.
ロータ１４は、回転軸１７と、該回転軸１７に固定され前記ステータ１３を覆うように設けられる釣り鐘状のロータヨーク１８と、該ロータヨーク１８の内周面に固定された永久磁石１９とを有する。ロータ１４は、回転軸１７が、センターピース１２の円筒部１２ａに挿通された状態で一対の軸受２０によって回転可能に支持されている。 The rotor 14 has a rotating shaft 17, a bell-shaped rotor yoke 18 fixed to the rotating shaft 17 and provided so as to cover the stator 13, and a permanent magnet 19 fixed to the inner peripheral surface of the rotor yoke 18. The rotor 14 is rotatably supported by a pair of bearings 20 in a state where the rotating shaft 17 is inserted through the cylindrical portion 12a of the center piece 12.
図２〜図４に示すように、本実施形態のステータ１３は、ステータコア１５にコイル１６を巻回するためのティース及びティース間のスロットが設けられておらず、ステータコア１５の外周側にコイル１６が固定されるスロットレス型とされている。 As shown in FIGS. 2 to 4, the stator 13 of the present embodiment is not provided with a tooth and a slot between the teeth for winding the coil 16 on the stator core 15, and the coil 16 is provided on the outer peripheral side of the stator core 15. Is a slotless type that is fixed.
コイル１６は、ステータコア１５の外周面に沿って軸方向に延びる軸方向コイル部２１と１対の軸方向コイル部２１同士を周方向に連結するコイルエンド部２２とを有し、コイルエンド部２２にて連結された軸方向コイル部２１同士の周方向の間には他の相の軸方向コイル部２１が配置されている。 The coil 16 has an axial coil portion 21 extending in the axial direction along the outer peripheral surface of the stator core 15 and a coil end portion 22 for connecting a pair of axial coil portions 21 in the circumferential direction, and the coil end portion 22. Axial coil portions 21 of other phases are arranged between the axial coil portions 21 connected by the above in the circumferential direction.
詳しくは、図５及び図６に示すように、コイル１６は、導体にエナメル被覆が施された線材２３が曲げられて製造される第１及び第２中間部材２４，２５を経て、図４に示す形状に成形される。すなわち、線材２３は、まず図５に示すように、環状に複数周であって本実施形態では環状に４周分巻回されて第１中間部材２４とされる。そして、次に図５から図６に示すように、前記第１中間部材２４から周方向に５箇所ずつ軸方向に凹凸が形成されるように折り曲げられて第２中間部材２５とされる。そして、次に図６から図４に示すように、前記第２中間部材２５の軸方向の両端部が径方向内側に屈曲されて、その屈曲された部位がコイルエンド部２２とされ、軸方向に延びる部位が軸方向コイル部２１とされてコイル１６が成形されている。なお、１つの軸方向コイル部２１は、線材２３が周方向に隣接して４本並ぶように構成されている。 Specifically, as shown in FIGS. 5 and 6, the coil 16 is manufactured by bending a wire rod 23 having an enamel coating on a conductor, and is manufactured by bending the first and second intermediate members 24 and 25. It is molded into the shape shown. That is, as shown in FIG. 5, the wire rod 23 has a plurality of circular turns, and in the present embodiment, the wire rod 23 is wound in a ring shape by four turns to form the first intermediate member 24. Then, as shown in FIGS. 5 to 6, the first intermediate member 24 is bent at five points in the circumferential direction so as to form irregularities in the axial direction to form the second intermediate member 25. Then, as shown in FIGS. 6 to 4, both ends of the second intermediate member 25 in the axial direction are bent inward in the radial direction, and the bent portion is used as the coil end portion 22 in the axial direction. The coil 16 is formed by forming the portion extending to the axial coil portion 21. In addition, one axial coil portion 21 is configured such that four wire rods 23 are arranged adjacent to each other in the circumferential direction.
そして、図２及び図３に示すように、上記のように成形されたコイル１６は、撓まされつつ軸方向コイル部２１がステータコア１５の外周面に沿うように且つコイルエンド部２２がステータコア１５の軸方向の端面上に重なるように配置される。 Then, as shown in FIGS. 2 and 3, the coil 16 formed as described above is bent so that the axial coil portion 21 is along the outer peripheral surface of the stator core 15 and the coil end portion 22 is the stator core 15. It is arranged so as to overlap on the end face in the axial direction of.
本実施形態のコイル１６は、Ｕ相のコイル１６ｕとＶ相のコイル１６ｖとＷ相のコイル１６ｗとを備え、ステータコア１５に対してこの順で組み付けられている。そして、Ｕ相のコイル１６ｕのコイルエンド部２２ｕにて連結された軸方向コイル部２１ｕ同士の周方向の間にはＶ相及びＷ相のそれぞれ１つの軸方向コイル部２１ｖ，２１ｗが配置されている。また、Ｖ相のコイル１６ｖのコイルエンド部２２ｖにて連結された軸方向コイル部２１ｖ同士の周方向の間にはＵ相及びＷ相のそれぞれ１つの軸方向コイル部２１ｕ，２１ｗが配置されている。また、Ｗ相のコイル１６ｗのコイルエンド部２２ｗにて連結された軸方向コイル部２１ｗ同士の周方向の間にはＵ相及びＶ相のそれぞれ１つの軸方向コイル部２１ｕ，２１ｖが配置されている。そして、Ｕ相のコイルエンド部２２ｕは、ステータコア１５の軸方向に載置され、更にＵ相のコイルエンド部２２ｕにはＶ相のコイルエンド部２２ｖ及びＷ相のコイルエンド部２２ｗがこの順で軸方向に重なるように配置されている。すなわち、コイルエンド部２２は、Ｕ相のコイルエンド部２２ｕが下の層とされ、Ｖ相のコイルエンド部２２ｖが中の層とされ、Ｗ相のコイルエンド部２２ｗが上の層とされて軸方向に重なるように配置されている。なお、図１では、上中下の層のコイルエンド部２２ｕ、２２ｖ、２２ｗの位置関係を視覚的に分かり易くすべく、コイルエンド部２２ｕ、２２ｖ、２２ｗの断面を正確に図示せずに模式的に図示している。また、Ｕ相、Ｖ相、及びＷ相のコイル１６ｕ、１６ｖ、１６ｗは、コイルエンド部２２ｕ、２２ｖ、２２ｗの軸方向の位置が異なることで、軸方向コイル部２１ｕ、２１ｖ、２１ｗの軸方向長さ、及びコイルエンド部２２ｕ、２２ｖ、２２ｗの径方向長さがそれぞれ異なるように成形されている。 The coil 16 of the present embodiment includes a U-phase coil 16u, a V-phase coil 16v, and a W-phase coil 16w, and is assembled to the stator core 15 in this order. Then, one axial coil portion 21v, 21w for each of the V phase and the W phase is arranged between the circumferential directions of the axial coil portions 21u connected by the coil end portion 22u of the U phase coil 16u. There is. Further, one axial coil portion 21u and 21w of the U phase and one W phase are arranged between the circumferential directions of the axial coil portions 21v connected by the coil end portion 22v of the V phase coil 16v. There is. Further, one axial coil portion 21u, 21v of each U phase and one V phase is arranged between the circumferential directions of the axial coil portions 21w connected by the coil end portion 22w of the W phase coil 16w. There is. The U-phase coil end portion 22u is placed in the axial direction of the stator core 15, and the V-phase coil end portion 22v and the W-phase coil end portion 22w are placed in this order on the U-phase coil end portion 22u. They are arranged so as to overlap in the axial direction. That is, in the coil end portion 22, the U-phase coil end portion 22u is the lower layer, the V-phase coil end portion 22v is the middle layer, and the W-phase coil end portion 22w is the upper layer. They are arranged so as to overlap in the axial direction. In addition, in FIG. 1, in order to make the positional relationship of the coil end portions 22u, 22v, 22w of the upper, middle and lower layers visually easy to understand, the cross sections of the coil end portions 22u, 22v, 22w are not shown accurately. Is illustrated. Further, the U-phase, V-phase, and W-phase coils 16u, 16v, and 16w have different axial positions of the coil end portions 22u, 22v, and 22w, so that the axial directions of the axial coil portions 21u, 21v, and 21w are different. The lengths and the radial lengths of the coil end portions 22u, 22v, and 22w are formed to be different from each other.
また、図７に示すように、ステータコア１５の外周面には、前記線材２３の直径以下の突出量で径方向に突出して線材２３と周方向に係合する突起３１が設けられている。詳しくは、本実施形態の突起３１は、線材２３の半径以下であって半径より小さい突出量で径方向外側に突出している。また、突起３１は、全ての線材２３同士の間に設けられている。すなわち、突起３１は、周方向に並ぶ線材２３の数と同数であって周方向に１２０個形成されている。また、突起３１は、線材２３の周面に沿った湾曲面３１ａを有し、線材２３は、湾曲面３１ａと面接触するように配設されている。また、突起３１は、線材２３が周方向に隙間無く並設されるように、湾曲面３１ａ等の各寸法が設定されている。 Further, as shown in FIG. 7, a protrusion 31 is provided on the outer peripheral surface of the stator core 15 so as to project radially with a protrusion amount equal to or less than the diameter of the wire 23 and engage with the wire 23 in the circumferential direction. Specifically, the protrusion 31 of the present embodiment protrudes outward in the radial direction with a protrusion amount smaller than the radius of the wire rod 23 and smaller than the radius. Further, the protrusion 31 is provided between all the wire rods 23. That is, the number of protrusions 31 is the same as the number of wire rods 23 arranged in the circumferential direction, and 120 protrusions 31 are formed in the circumferential direction. Further, the protrusion 31 has a curved surface 31a along the peripheral surface of the wire rod 23, and the wire rod 23 is arranged so as to make surface contact with the curved surface 31a. Further, the protrusions 31 are set with various dimensions such as a curved surface 31a so that the wire rods 23 are arranged side by side in the circumferential direction without any gap.
また、図１及び図８に示すように、異なる相のコイルエンド部２２ｕ、２２ｖ、２２ｗ同士の間には、絶縁部材３２が介在されている。なお、図２〜図４等では絶縁部材３２の図示を省略している。絶縁部材３２は、絶縁材料がシート状に成形されてなる。また、異なる相のコイルエンド部２２ｕ、２２ｖ、２２ｗが重なる部位は周方向に複数設けられており、本実施形態の絶縁部材３２は、周方向の全ての部位で異なる相のコイルエンド部２２ｕ、２２ｖ、２２ｗ同士の間に介在されるべく環状に形成されている。すなわち、Ｕ相のコイルエンド部２２ｕとＶ相のコイルエンド部２２ｖは、軸方向の片側において周方向の５箇所の部位で軸方向に重なるが、それら５箇所の部位は、１枚の環状の絶縁部材３２にて絶縁されている。また、Ｖ相のコイルエンド部２２ｖとＷ相のコイルエンド部２２ｗは、軸方向の片側において周方向の５箇所の部位で軸方向に重なるが、それら５箇所の部位は、１枚の環状の絶縁部材３２にて絶縁されている。 Further, as shown in FIGS. 1 and 8, an insulating member 32 is interposed between the coil end portions 22u, 22v, 22w of different phases. The insulating member 32 is not shown in FIGS. 2 to 4 and the like. The insulating member 32 is formed by molding an insulating material into a sheet shape. Further, a plurality of portions where the coil end portions 22u, 22v, 22w of different phases overlap each other are provided in the circumferential direction, and the insulating member 32 of the present embodiment has the coil end portions 22u of different phases in all the portions in the circumferential direction. It is formed in a ring shape so as to be interposed between 22v and 22w. That is, the U-phase coil end portion 22u and the V-phase coil end portion 22v overlap in the axial direction at five points in the circumferential direction on one side in the axial direction, and these five parts are one annular shape. It is insulated by the insulating member 32. Further, the V-phase coil end portion 22v and the W-phase coil end portion 22w overlap in the axial direction at five points in the circumferential direction on one side in the axial direction, and these five parts are one annular shape. It is insulated by the insulating member 32.
また、Ｕ相のコイルエンド部２２ｕとステータコア１５との間には、固定部材間絶縁部材３３が介在されている。固定部材間絶縁部材３３は、前記絶縁部材３２と同様に環状に形成されている。 Further, an inter-fixing member insulating member 33 is interposed between the U-phase coil end portion 22u and the stator core 15. The insulating member 33 between the fixing members is formed in an annular shape like the insulating member 32.
また、本実施形態の絶縁部材３２及び固定部材間絶縁部材３３は、コイルエンド部２２ｕ、２２ｖ、２２ｗに対して固着されている。詳しくは、本実施形態では、前記ステータコア１５に対してコイル１６、絶縁部材３２及び固定部材間絶縁部材３３が組み付けられた状態でそれらの表面やそれらが接触する部位がモールド材３４でモールドされることでそれぞれが互いに固着されている。なお、モールド材３４は、各部材の表面や隙間に薄く設けられるのみであり、図１では、コイルエンド部２２ｗの表面にモールド材３４の符号を付している。 Further, the insulating member 32 and the insulating member 33 between the fixing members of the present embodiment are fixed to the coil end portions 22u, 22v, 22w. Specifically, in the present embodiment, the coil 16, the insulating member 32, and the insulating member 33 between the fixing members are assembled to the stator core 15, and the surfaces thereof and the portions where they come into contact are molded with the molding material 34. By doing so, each is fixed to each other. The mold material 34 is only thinly provided on the surface and gaps of each member, and in FIG. 1, the surface of the coil end portion 22w is designated by the mold material 34.
上記したステータ１３は、ステータコア１５に対して各部材が軸方向に重ねられる順に組み付けられる。すなわち、本実施形態における製造方法は、まず固定部材間絶縁部材３３をステータコア１５の軸方向に乗せる乗せ工程と、次にＵ相のコイル１６ｕを組み付けてコイルエンド部２２ｕを固定部材間絶縁部材３３が乗せられたステータコア１５の軸方向に載置する載置工程とを備える。また、製造方法は、載置工程の後、Ｕ相のコイルエンド部２２ｕの軸方向に絶縁部材３２を配置する絶縁部材配置工程と、絶縁部材配置工程の後、Ｖ相のコイル１６ｖを組み付けて、前記載置工程で載置したＵ相のコイルエンド部２２ｕとで絶縁部材３２を挟むようにＶ相のコイルエンド部２２ｖを配置する挟み工程とを備える。また、本実施形態では、その後、Ｖ相のコイルエンド部２２ｖの軸方向に絶縁部材３２を配置する絶縁部材配置工程と、絶縁部材配置工程の後、Ｗ相のコイル１６ｗを組み付けて、Ｖ相のコイルエンド部２２ｕとで絶縁部材３２を挟むようにＷ相のコイルエンド部２２ｗを配置する挟み工程とを備える。 The above-mentioned stator 13 is assembled to the stator core 15 in the order in which each member is vertically overlapped. That is, in the manufacturing method in the present embodiment, first, the fixing member insulating member 33 is placed on the stator core 15 in the axial direction, and then the U-phase coil 16u is assembled to attach the coil end portion 22u to the fixing member insulating member 33. The stator core 15 is provided with a mounting step of mounting the stator core 15 in the axial direction. Further, in the manufacturing method, after the mounting step, the insulating member arranging step of arranging the insulating member 32 in the axial direction of the U-phase coil end portion 22u, and after the insulating member arranging step, the V-phase coil 16v is assembled. A sandwiching step of arranging the V-phase coil end portion 22v so as to sandwich the insulating member 32 with the U-phase coil end portion 22u placed in the previously described setting step is provided. Further, in the present embodiment, after that, after the insulating member arranging step of arranging the insulating member 32 in the axial direction of the V-phase coil end portion 22v and the insulating member arranging step, the W-phase coil 16w is assembled and the V-phase is assembled. A sandwiching step of arranging the W-phase coil end portion 22w so as to sandwich the insulating member 32 with the coil end portion 22u of the above is provided.
また、図２及び図３に示すように、コイル１６の一端４１は、自身の相のコイルエンド部２２と軸方向に重なりつつ径方向内側に延びて設けられ、コイル１６の他端４２は、自身の相のコイルエンド部２２と軸方向に重ならずに径方向内側に延びて設けられることになる。すなわち、上記したように成形されるコイル１６では、その両端を径方向内側に引き出す際に、一端及び他端を共に自身の相のコイルエンド部２２と軸方向に重ならないように設けることはできず、その一方である一端４１は、自身の相のコイルエンド部２２と軸方向に重なることになる。 Further, as shown in FIGS. 2 and 3, one end 41 of the coil 16 is provided so as to extend inward in the radial direction while overlapping in the axial direction with the coil end portion 22 of its own phase, and the other end 42 of the coil 16 is provided. It is provided so as to extend inward in the radial direction without overlapping with the coil end portion 22 of its own phase in the axial direction. That is, in the coil 16 formed as described above, when both ends thereof are pulled out radially inward, both one end and the other end can be provided so as not to overlap the coil end portion 22 of its own phase in the axial direction. On the other hand, one end 41 overlaps the coil end portion 22 of its own phase in the axial direction.
そして、図２、図３、及び図９（ｃ）に示すように、下の層のＵ相のコイル１６ｕの一端４１ｕは、中の層のＶ相のコイルエンド部２２ｖが上方に存在しない周方向側（図９（ｃ）中、左側）で自身の相のコイルエンド部２２ｕの上方であって中の層に配置されている。 Then, as shown in FIGS. 2, 3 and 9 (c), one end 41u of the U-phase coil 16u in the lower layer has a circumference in which the V-phase coil end portion 22v in the inner layer does not exist above. On the directional side (on the left side in FIG. 9C), it is located above the coil end portion 22u of its own phase and in the inner layer.
また、図２、図３、及び図９（ｂ）に示すように、中の層のＶ相のコイル１６ｖの一端４１ｖは、上の層のＷ相のコイルエンド部２２ｗが上方に存在しない周方向側（図９（ｂ）中、右側）で自身の相のコイルエンド部２２ｖの上方であって上の層に配置されている。 Further, as shown in FIGS. 2, 3 and 9 (b), one end 41v of the V-phase coil 16v in the inner layer has a circumference in which the W-phase coil end portion 22w in the upper layer does not exist above. It is arranged on the directional side (on the right side in FIG. 9B) above the coil end portion 22v of its own phase and in the upper layer.
また、図２、図３、及び図９（ａ）に示すように、上の層のＷ相のコイル１６ｗの一端４１ｗは、中の層のＶ相のコイルエンド部２２ｖが下方に存在しない周方向側（図９（ａ）中、左側）で自身の相のコイルエンド部２２ｗの下方であって中の層に配置されている。 Further, as shown in FIGS. 2, 3 and 9 (a), one end 41w of the W-phase coil 16w in the upper layer has a circumference in which the V-phase coil end portion 22v in the middle layer does not exist below. It is arranged in the inner layer below the coil end portion 22w of its own phase on the directional side (left side in FIG. 9A).
なお、各相のコイル１６ｕ，１６ｖ，１６ｗの他端４２ｕ，４２ｖ，４２ｗは、自身の相のコイルエンド部２２ｕ，２２ｖ，２２ｗと軸方向に重ならずにそのまま径方向内側に延びて設けられている。また、上記した一端４１ｕ，４１ｖ，４１ｗ及び他端４２ｕ，４２ｖ，４２ｗの配置構成は、上記した第１及び第２中間部材２４，２５を成形する段階からそれぞれに対応した形状とされており、図５及び図６は、Ｕ相のコイル１６ｕに対応した第１及び第２中間部材２４，２５を図示している。 The other ends 42u, 42v, 42w of the coils 16u, 16v, 16w of each phase are provided so as to extend inward in the radial direction as they are without overlapping with the coil end portions 22u, 22v, 22w of their own phase. ing. Further, the arrangement configuration of the one end 41u, 41v, 41w and the other end 42u, 42v, 42w has a shape corresponding to each from the stage of molding the first and second intermediate members 24, 25 described above. 5 and 6 show the first and second intermediate members 24 and 25 corresponding to the U-phase coil 16u.
そして、図２に示すように、コイル１６の一端４１及び他端４２は、ターミナルとしての中性点ターミナル４３又は電源ターミナル４４に接続される。
詳しくは、本実施形態では各相のコイル１６ｕ，１６ｖ，１６ｗの一端４１ｕ，４１ｖ，４１ｗは、中性点接続部とされて、それらは中性点ターミナル４３に接続されている。この中性点ターミナル４３は、コイルエンド部２２ｕ，２２ｖ，２２ｗの上中下の層の軸方向の範囲内に配置されている。
Then, as shown in FIG. 2, one end 41 and the other end 42 of the coil 16 are connected to the neutral point terminal 43 or the power supply terminal 44 as terminals.
Specifically, in the present embodiment, one ends 41u, 41v, 41w of the coils 16u, 16v, 16w of each phase are used as neutral point connecting portions, and they are connected to the neutral point terminal 43. The neutral point terminal 43 is arranged within the axial range of the upper, middle, and lower layers of the coil end portions 22u, 22v, and 22w.
また、各相のコイル１６ｕ，１６ｖ，１６ｗの他端４２ｕ，４２ｖ，４２ｗは、電源接続部とされて、それらはそれぞれの相に対応した電源ターミナル４４に接続されている。この電源ターミナル４４は、その一部がコイルエンド部２２ｕ，２２ｖ，２２ｗの上中下の層の軸方向の範囲内に配置され、その範囲内で前記電源接続部、すなわち前記他端４２ｕ，４２ｖ，４２ｗと接続されている。 Further, the other ends 42u, 42v, 42w of the coils 16u, 16v, 16w of each phase are used as power supply connection portions, and they are connected to the power supply terminal 44 corresponding to each phase. A part of the power supply terminal 44 is arranged within the axial range of the upper, middle, and lower layers of the coil end portions 22u, 22v, 22w, and the power supply connection portion, that is, the other end 42u, 42v is within the range. , 42w is connected.
そして、図１に示すように、各電源ターミナル４４は、前記センターピース１２のフランジ部１２ｂを貫通して、１２０度位相のずれた３相駆動電流を供給可能な回路基板４５に接続されている。 Then, as shown in FIG. 1, each power supply terminal 44 is connected to a circuit board 45 capable of supplying a three-phase drive current out of phase by 120 degrees through the flange portion 12b of the center piece 12. ..
次に、上記のように構成されたスロットレス回転電機１１の作用について説明する。
回路基板４５からステータ１３のコイル１６に３相駆動電流が供給されると、ステータ１３にて回転磁界が発生されてロータ１４が回転駆動される。
Next, the operation of the slotless rotary electric machine 11 configured as described above will be described.
When a three-phase drive current is supplied from the circuit board 45 to the coil 16 of the stator 13, a rotating magnetic field is generated in the stator 13 to rotationally drive the rotor 14.
次に、上記実施形態の効果を以下に記載する。
（１）ステータコア１５の外周面には、コイル１６を構成する線材２３の直径以下の突出量で径方向に突出して線材２３と周方向に係合する突起３１が設けられるため、軸方向コイル部２１が周方向に移動してしまうことが抑えられる。よって、トルクリップルの増大を抑制することができる。
Next, the effects of the above embodiment will be described below.
(1) An axial coil portion is provided on the outer peripheral surface of the stator core 15 because a protrusion 31 that protrudes in the radial direction and engages with the wire 23 in the circumferential direction is provided with a protrusion amount equal to or less than the diameter of the wire 23 constituting the coil 16. It is possible to prevent the 21 from moving in the circumferential direction. Therefore, it is possible to suppress an increase in torque ripple.
（２）突起３１は、異なる相の線材２３同士の間、言い換えると異なる相の軸方向コイル部２１ｕ，２１ｖ，２１ｗ同士の間に設けられるため、異なる相の線材２３同士の間に擦れるような大きな力が掛かることが抑えられ、電位差が大きくなることのある異なる相の線材２３間の絶縁性を確保することができる。 (2) Since the protrusion 31 is provided between the wire rods 23 of different phases, in other words, between the axial coil portions 21u, 21v, 21w of different phases, the protrusions 31 are rubbed between the wire rods 23 of different phases. It is possible to suppress the application of a large force and secure the insulation between the wires 23 of different phases in which the potential difference may be large.
（３）突起３１は、全ての線材２３同士の間に設けられるため、全ての線材２３が周方向に移動してしまうことが抑えられる。
（４）突起３１は、線材２３の半径以下であって半径より小さい突出量で径方向外側に突出するため、本実施形態のように線材２３を周方向に隙間無く並設することが可能となり、線材２３が周方向に離間して設けられたものに比べて、高効率化を図ることができる。
(3) Since the protrusions 31 are provided between all the wire rods 23, it is possible to prevent all the wire rods 23 from moving in the circumferential direction.
(4) Since the protrusion 31 projects outward in the radial direction with a protrusion amount smaller than the radius of the wire rod 23 and smaller than the radius, the wire rods 23 can be arranged side by side in the circumferential direction without a gap as in the present embodiment. , Higher efficiency can be achieved as compared with the wire rods 23 provided apart in the circumferential direction.
（５）突起３１は、線材２３の周面に沿った湾曲面３１ａを有するため、線材２３を突起３１に面接触させて周方向に係合させることができる。よって、例えば、線材２３に局部的な力が加わることを抑えることができ、線材２３の損傷を抑えることができる。 (5) Since the protrusion 31 has a curved surface 31a along the peripheral surface of the wire rod 23, the wire rod 23 can be brought into surface contact with the protrusion 31 and engaged in the circumferential direction. Therefore, for example, it is possible to suppress the application of a local force to the wire rod 23, and it is possible to suppress damage to the wire rod 23.
（６）自身の相のコイルエンド部２２ｕ，２２ｖ，２２ｗと軸方向に重なるコイル１６ｕ，１６ｖ，１６ｗの一端４１ｕ，４１ｖ，４１ｗは、全てコイルエンド部２２ｕ，２２ｖ，２２ｗの上中下の層の軸方向の範囲内に配置されるため、４層以上の範囲に配置される構成に比べて、軸方向の小型化を図ることができる。 (6) One ends 41u, 41v, 41w of the coils 16u, 16v, 16w overlapping in the axial direction with the coil end portions 22u, 22v, 22w of their own phase are all upper, middle and lower layers of the coil end portions 22u, 22v, 22w. Since it is arranged within the range of the axial direction of the above, it is possible to reduce the size of the axial direction as compared with the configuration arranged in the range of four or more layers.
（７）コイル１６の一端４１が接続される中性点ターミナル４３は、コイルエンド部２２ｕ，２２ｖ，２２ｗの上中下の層の軸方向の範囲内に配置されるため、コイルエンド部２２ｕ，２２ｖ，２２ｗの上中下の層の軸方向の範囲内でコイル１６の一端４１を中性点ターミナル４３に接続することができる。よって、中性点ターミナル４３がコイルエンド部２２ｕ，２２ｖ，２２ｗの上中下の層の軸方向の範囲外に配置されるものに比べて、軸方向の小型化を図ることができる。また、コイル１６の他端４２が接続される電源ターミナル４４の一部は、コイルエンド部２２ｕ，２２ｖ，２２ｗの上中下の層の軸方向の範囲内に配置されるため、コイルエンド部２２ｕ，２２ｖ，２２ｗの上中下の層の軸方向の範囲内でコイル１６の他端４２を電源ターミナル４４に接続することができる。よって、電源ターミナル４４がコイルエンド部２２ｕ，２２ｖ，２２ｗの上中下の層の軸方向の範囲外に配置されるものに比べて、軸方向の小型化を図ることができる。 (7) Since the neutral point terminal 43 to which one end 41 of the coil 16 is connected is arranged within the axial range of the upper, middle, and lower layers of the coil end portions 22u, 22v, 22w, the coil end portions 22u, One end 41 of the coil 16 can be connected to the neutral point terminal 43 within the axial range of the upper, middle and lower layers of 22v and 22w. Therefore, the size of the neutral point terminal 43 in the axial direction can be reduced as compared with the case where the neutral point terminal 43 is arranged outside the axial range of the upper, middle, and lower layers of the coil end portions 22u, 22v, and 22w. Further, since a part of the power supply terminal 44 to which the other end 42 of the coil 16 is connected is arranged within the axial range of the upper, middle and lower layers of the coil end portions 22u, 22v and 22w, the coil end portion 22u , 22v, 22w, the other end 42 of the coil 16 can be connected to the power supply terminal 44 within the axial range of the upper, middle and lower layers. Therefore, the size of the power supply terminal 44 can be reduced in the axial direction as compared with the case where the power supply terminal 44 is arranged outside the axial range of the upper, middle, and lower layers of the coil end portions 22u, 22v, and 22w.
（８）異なる相のコイルエンド部２２ｕ，２２ｖ，２２ｗ同士の間には、絶縁部材３２が介在されるため、電位差が大きくなることのある異なる相のコイル１６ｕ，１６ｖ，１６ｗ間の絶縁性を確保することができる。 (8) Since the insulating member 32 is interposed between the coil end portions 22u, 22v, 22w of different phases, the insulation between the coils 16u, 16v, 16w of different phases, which may increase the potential difference, is improved. Can be secured.
（９）コイルエンド部２２ｕ，２２ｖ，２２ｗは、軸方向コイル部２１ｕ，２１ｖ，２１ｗの端部から径方向に屈曲されつつ軸方向に重なるように配置されるため、例えば、径方向に屈曲されずに軸方向に延びて配置されるものに比べて軸方向の小型化を図ることができる。 (9) The coil end portions 22u, 22v, 22w are arranged so as to overlap in the axial direction while being bent in the radial direction from the ends of the axial coil portions 21u, 21v, 21w, so that they are bent in the radial direction, for example. It is possible to reduce the size in the axial direction as compared with the one that is arranged so as to extend in the axial direction.
（１０）Ｕ相のコイルエンド部２２ｕとステータコア１５との軸方向の間には、固定部材間絶縁部材３３が介在されるため、コイルエンド部２２ｕとステータコア１５との間の絶縁性を確保することができる。 (10) Since the insulating member 33 between the fixing members is interposed between the U-phase coil end portion 22u and the stator core 15 in the axial direction, the insulating property between the coil end portion 22u and the stator core 15 is ensured. be able to.
（１１）絶縁部材３２は、周方向の全ての部位で異なる相のコイルエンド部２２ｕ，２２ｖ，２２ｗ同士の間に介在されるべく環状に形成されるため、例えば、周方向に複数の絶縁部材とした場合に比べて、部品点数を低減することができる。 (11) Since the insulating member 32 is formed in an annular shape so as to be interposed between the coil end portions 22u, 22v, 22w having different phases at all the portions in the circumferential direction, for example, a plurality of insulating members in the circumferential direction. The number of parts can be reduced as compared with the case where.
（１２）絶縁部材３２は、コイルエンド部２２ｕ，２２ｖ，２２ｗに対して固着されるため、例えば、異なる相のコイルエンド部２２ｕ，２２ｖ，２２ｗ同士の間に挟持されただけの構成に比べて、絶縁性を確保した状態を維持し続けることができる。 (12) Since the insulating member 32 is fixed to the coil end portions 22u, 22v, 22w, as compared with a configuration in which the insulating member 32 is simply sandwiched between the coil end portions 22u, 22v, 22w of different phases, for example. , It is possible to continue to maintain the state where the insulation is secured.
（１３）上記した製造方法では、ステータコア１５に対して各部材が軸方向に重ねられる順に組み付けることで、異なる相のコイルエンド部２２ｕ，２２ｖ，２２ｗ同士の間に絶縁部材３２を良好に介在させることができる。すなわち、コイルエンド部２２ｕ，２２ｖ，２２ｗを重ねて配置した後に絶縁部材３２を挿入する場合に比べて、絶縁部材３２を容易且つ確実にコイルエンド部２２ｕ，２２ｖ，２２ｗ同士の間に介在させることができる。 (13) In the above-mentioned manufacturing method, by assembling each member to the stator core 15 in the order in which the members are vertically overlapped with each other, the insulating member 32 is satisfactorily interposed between the coil end portions 22u, 22v, 22w of different phases. be able to. That is, the insulating member 32 is easily and surely interposed between the coil end portions 22u, 22v, 22w as compared with the case where the insulating member 32 is inserted after the coil end portions 22u, 22v, 22w are arranged in an overlapping manner. Can be done.
上記実施形態は以下のように変更して実施することができる。また、本実施形態及び以下の変更例は、技術的に矛盾しない範囲で互いに組み合わせて実施することができる。
・上記実施形態では、図２に示すように、コイル１６の一端４１及び他端４２が相毎に周方向の異なる位置に配置された構成としたが、これに限定されず、一端４１及び他端４２の周方向の位置は他の配置に変更してもよい。
The above embodiment can be modified and implemented as follows. Further, the present embodiment and the following modified examples can be implemented in combination with each other within a technically consistent range.
In the above embodiment, as shown in FIG. 2, one end 41 and the other end 42 of the coil 16 are arranged at different positions in the circumferential direction for each phase, but the present invention is not limited to this, and the one end 41 and others are not limited to this. The circumferential position of the end 42 may be changed to another arrangement.
例えば、図１０に示すように、各相のコイル１６ｕ，１６ｖ，１６ｗの一端５１ｖ，５１ｗ及び他端５２ｕからなる３つの中性点接続部を、周方向に並ぶ３対の前記軸方向コイル部２１ｕ，２１ｖ，２１ｗの周方向の範囲、すなわち線材２３が２４個並ぶ周方向の範囲内に配置してもよい。このようにすると、例えば、３つの中性点接続部が前記周方向の範囲外に配置された場合に比べて、中性点接続部同士の周方向の間隔を小さくすることができる。よって、例えば、中性点ターミナル４３の周方向長さを短くすることができる。 For example, as shown in FIG. 10, three pairs of axial coil portions in which three neutral point connecting portions including one ends 51v, 51w and the other end 52u of the coils 16u, 16v, 16w of each phase are arranged in the circumferential direction. It may be arranged in the circumferential range of 21u, 21v, 21w, that is, in the circumferential range in which 24 wire rods 23 are lined up. By doing so, for example, the distance between the neutral point connecting portions in the circumferential direction can be reduced as compared with the case where the three neutral point connecting portions are arranged outside the range in the circumferential direction. Therefore, for example, the circumferential length of the neutral point terminal 43 can be shortened.
また、例えば、図１０に示すように、各相のコイル１６ｕ，１６ｖ，１６ｗの一端５１ｕ及び他端５２ｖ，５２ｗからなる３つの電源接続部を、周方向に並ぶ３対の前記軸方向コイル部２１ｕ，２１ｖ，２１ｗの周方向の範囲、すなわち線材２３が２４個並ぶ周方向の範囲内に配置してもよい。このようにすると、例えば、３つの電源接続部が前記周方向の範囲外に配置された場合に比べて、電源接続部同士の周方向の間隔を小さくすることができる。よって、例えば、３つの電源ターミナル４４を周方向の狭い範囲に集約して設けることができる。 Further, for example, as shown in FIG. 10, three pairs of axial coil portions in which three power supply connection portions including one end 51u and the other end 52v, 52w of the coils 16u, 16v, 16w of each phase are arranged in the circumferential direction are arranged. It may be arranged in the circumferential range of 21u, 21v, 21w, that is, in the circumferential range in which 24 wire rods 23 are lined up. By doing so, for example, the distance between the power supply connection portions in the circumferential direction can be reduced as compared with the case where the three power supply connection portions are arranged outside the range in the circumferential direction. Therefore, for example, the three power supply terminals 44 can be collectively provided in a narrow range in the circumferential direction.
また、例えば、図１１に示すように、各相のコイル１６ｕ，１６ｖ，１６ｗの一端６１ｗ及び他端６２ｕ，６２ｖからなる３つの中性点接続部、及び各相のコイル１６ｕ，１６ｖ，１６ｗの一端６１ｕ，６１ｖ及び他端６２ｗからなる３つの電源接続部を、周方向に並ぶ３対の前記軸方向コイル部２１ｕ，２１ｖ，２１ｗの周方向の範囲、すなわち線材２３が２４個並ぶ周方向の範囲内に配置してもよい。このようにすると、上記別例（図１１参照）の効果を得ることができるとともに、更に３つの中性点接続部及び３つの電源接続部を周方向の狭い範囲に集約して設けることができる。 Further, for example, as shown in FIG. 11, three neutral point connecting portions including one end 61w and the other end 62u, 62v of the coils 16u, 16v, 16w of each phase, and the coils 16u, 16v, 16w of each phase. The three power supply connection portions consisting of one end 61u, 61v and the other end 62w are arranged in the circumferential direction in the circumferential range of the three pairs of axial coil portions 21u, 21v, 21w, that is, in the circumferential direction in which 24 wire rods 23 are arranged. It may be arranged within the range. By doing so, the effect of the above alternative example (see FIG. 11) can be obtained, and further, the three neutral point connection portions and the three power supply connection portions can be provided in a narrow range in the circumferential direction. ..
・上記実施形態では、ステータコア１５の突起３１は、全ての線材２３同士の間に設けられるとしたが、これに限定されず、他の間隔で設けてもよい。
例えば、図１２に示すように、突起３１は、異なる相の線材２３同士の間、言い換えると異なる相の軸方向コイル部２１ｕ，２１ｖ，２１ｗ同士の間にのみ設けてもよい。
-In the above embodiment, the protrusions 31 of the stator core 15 are provided between all the wire rods 23, but the present invention is not limited to this, and the protrusions 31 may be provided at other intervals.
For example, as shown in FIG. 12, the protrusion 31 may be provided only between the wire rods 23 of different phases, in other words, between the axial coil portions 21u, 21v, 21w of different phases.
・上記実施形態では、特に言及していないが、コイル１６とステータコア１５との間を更に絶縁してもよい。
例えば、図１３に示すように、軸方向コイル部２１ｕとコイルエンド部２２ｕとの間の屈曲部７１と、ステータコア１５との間には、屈曲部間絶縁部材７２を介在させてもよい。このようにすると、屈曲部７１とステータコア１５との絶縁性を確保することができる。
-In the above embodiment, although not particularly mentioned, the coil 16 and the stator core 15 may be further insulated.
For example, as shown in FIG. 13, an inter-bending insulating member 72 may be interposed between the bent portion 71 between the axial coil portion 21u and the coil end portion 22u and the stator core 15. In this way, the insulating property between the bent portion 71 and the stator core 15 can be ensured.
また、例えば、図１３に示すように、軸方向コイル部２１とステータコア１５との間には、径方向間絶縁部材７３を介在させてもよい。このようにすると、軸方向コイル部２１とステータコア１５との絶縁性を確保することができる。 Further, for example, as shown in FIG. 13, a radial insulating member 73 may be interposed between the axial coil portion 21 and the stator core 15. In this way, the insulation between the axial coil portion 21 and the stator core 15 can be ensured.
・上記実施形態では、絶縁部材３２は、環状に形成されるとしたが、これに限定されず、周方向の複数の範囲で異なる相のコイルエンド部２２ｕ，２２ｖ，２２ｗ同士の間に介在されるべく周方向に複数設けてもよい。 -In the above embodiment, the insulating member 32 is formed to be annular, but is not limited to this, and is interposed between the coil end portions 22u, 22v, 22w of different phases in a plurality of ranges in the circumferential direction. If possible, a plurality of them may be provided in the circumferential direction.
例えば、図１４に示すように、Ｗ相のコイルエンド部２２ｗの下方であってステータコア１５側には、Ｗ相のコイルエンド部２２ｗの周方向の幅よりやや広い周方向の幅で扇形状の絶縁部材７４ｗを配置してもよい。また、Ｖ相のコイルエンド部２２ｖの下方であってステータコア１５側には、Ｖ相のコイルエンド部２２ｖの周方向の幅よりやや広い周方向の幅で扇形状の絶縁部材７４ｖを配置してもよい。このようにすると、例えば、環状の絶縁部材３２とした場合に比べて、不必要な周方向範囲の絶縁部材を減らすことができ、絶縁部材の材料の無駄を抑えることができる。 For example, as shown in FIG. 14, a fan shape is formed below the W-phase coil end portion 22w and on the stator core 15 side with a circumferential width slightly wider than the circumferential width of the W-phase coil end portion 22w. Insulating member 74w may be arranged. Further, a fan-shaped insulating member 74v is arranged below the V-phase coil end portion 22v and on the stator core 15 side with a width in the circumferential direction slightly wider than the circumferential width of the V-phase coil end portion 22v. May be good. By doing so, as compared with the case where the annular insulating member 32 is used, unnecessary insulating members in the circumferential direction can be reduced, and waste of the material of the insulating member can be suppressed.
・上記実施形態では、コイルエンド部２２ｕ，２２ｖ，２２ｗは、軸方向コイル部２１の端部から径方向内側に屈曲されるとしたが、これに限定されず、他の方向に屈曲されていてもよい。 -In the above embodiment, the coil end portions 22u, 22v, 22w are bent inward in the radial direction from the end portion of the axial coil portion 21, but the present invention is not limited to this, and the coil end portions 22u, 22v, 22w are bent in other directions. May be good.
例えば、図１５に示すように、上記実施形態における軸方向の一方側のコイルエンド部２２ｕ，２２ｖ，２２ｗが径方向外側に屈曲された構成としてもよい。このようにすると、例えば、径方向外側に屈曲されたコイルエンド部２２ｕとステータコア１５との軸方向の間の固定部材間絶縁部材３３が不要となる。また、このようにすると、成形されたコイル１６を撓ませることなくステータコア１５に組み付けることができ、組み付けが容易となる。また、例えば、軸方向の両方のコイルエンド部が共に径方向外側に屈曲されたインナーロータタイプのスロットレス回転電機に具体化してもよい。 For example, as shown in FIG. 15, the coil end portions 22u, 22v, 22w on one side in the axial direction in the above embodiment may be bent outward in the radial direction. In this way, for example, the insulating member 33 between the fixing members between the coil end portion 22u bent outward in the radial direction and the stator core 15 in the axial direction becomes unnecessary. Further, in this way, the molded coil 16 can be assembled to the stator core 15 without bending, and the assembly becomes easy. Further, for example, it may be embodied in an inner rotor type slotless rotary electric machine in which both coil end portions in the axial direction are bent outward in the radial direction.
・上記実施形態では、中の層のＶ相のコイル１６ｖの一端４１ｖは、図９（ｂ）に示すように上の層に配置されるとしたが、これに限定されず、下の層のＵ相のコイルエンド部２２ｕが下方に存在しない周方向側（図９（ｂ）中、右側）で自身の相のコイルエンド部２２ｖの下方であって下の層に配置してもよい。 In the above embodiment, one end 41v of the V-phase coil 16v in the middle layer is arranged in the upper layer as shown in FIG. 9B, but the present invention is not limited to this, and the lower layer. The U-phase coil end portion 22u may be arranged in the lower layer on the circumferential direction side (right side in FIG. 9B) below the coil end portion 22v of its own phase.
・上記実施形態では、コイル１６の一端４１及び他端４２が接続されるターミナルとしての中性点ターミナル４３及び電源ターミナル４４を備えた構成としたが、これらターミナルを備えず、他の構成で結線されるものとしてもよい。 -In the above embodiment, the neutral point terminal 43 and the power supply terminal 44 are provided as terminals to which one end 41 and the other end 42 of the coil 16 are connected, but these terminals are not provided and the connection is made with another configuration. It may be done.
・上記実施形態では、異なる相のコイルエンド部２２ｕ，２２ｖ，２２ｗ同士の間には、絶縁部材３２が介在されるとしたが、これに限定されず、絶縁部材３２が介在されていない構成としてもよい。 -In the above embodiment, the insulating member 32 is interposed between the coil end portions 22u, 22v, 22w of different phases, but the present invention is not limited to this, and the configuration is such that the insulating member 32 is not interposed. May be good.
・上記実施形態では、Ｕ相のコイルエンド部２２ｕとステータコア１５との軸方向の間には、固定部材間絶縁部材３３が介在されるとしたが、これに限定されず、固定部材間絶縁部材３３が介在されていない構成としてもよい。また、固定部材間絶縁部材３３は、ステータコア１５に乗せるものに限らず、ステータコア１５に塗装されて設けられる絶縁塗装材としてもよい。 In the above embodiment, the fixing member inter-fixing member insulating member 33 is interposed between the U-phase coil end portion 22u and the stator core 15 in the axial direction, but the present invention is not limited to this. The configuration may be such that 33 is not interposed. Further, the fixing member-to-fixing member insulating member 33 is not limited to the one placed on the stator core 15, and may be an insulating coating material provided by painting on the stator core 15.
・上記実施形態では、絶縁部材３２は、モールド材３４によってモールドされることでコイルエンド部２２ｕ，２２ｖ，２２ｗに対して固着されるとしたが、これに限定されず、例えば、互いを接着するだけの接着剤によって固着させてもよいし、異なる相のコイルエンド部２２ｕ，２２ｖ，２２ｗ同士の間に挟持させただけの構成としてもよい。 -In the above embodiment, the insulating member 32 is fixed to the coil end portions 22u, 22v, 22w by being molded by the molding material 34, but the present invention is not limited to this, and for example, the insulating members 32 are adhered to each other. It may be fixed with only an adhesive, or it may be simply sandwiched between coil end portions 22u, 22v, 22w of different phases.
・上記した製造方法では、ステータコア１５に対してコイルエンド部２２ｕ，２２ｖ，２２ｗや絶縁部材３２等の各部材が軸方向に重ねられる順に組み付けるとしたが、これに限定されず、コイルエンド部２２ｕ，２２ｖ，２２ｗを配置した後に絶縁部材３２を組み付けてもよい。 -In the above-mentioned manufacturing method, the coil end portions 22u, 22v, 22w, the insulating member 32, and other members are assembled to the stator core 15 in the order in which they are vertically overlapped, but the present invention is not limited to this, and the coil end portion 22u is not limited to this. , 22v, 22w may be arranged and then the insulating member 32 may be assembled.
すなわち、１つのコイルエンド部２２ｕをステータコア１５の軸方向に載置する載置工程と、その後、コイルエンド部２２ｕの軸方向に異なる相のコイルエンド部２２ｖ，２２ｗを配置する重ね配置工程と、その後、異なる相のコイルエンド部２２ｕ，２２ｖ，２２ｗ同士の間に絶縁部材３２を挿入する挿入工程とを備えた製造方法としてもよい。このようにすると、例えば、ステータコア１５に対して各部材が軸方向に重ねられる順に組み付ける場合に比べて、コイルエンド部２２ｕ，２２ｖ，２２ｗを組み付ける工程を連続して行うことができ、製造工程を簡略化することができる。なお、このように製造する場合、絶縁部材３２は、上記別例（図１４参照）の絶縁部材７４ｖ，７４ｗのように、周方向に複数の絶縁部材とすることが好ましい。 That is, a mounting step of mounting one coil end portion 22u in the axial direction of the stator core 15, and then a stacking step of arranging coil end portions 22v and 22w having different phases in the axial direction of the coil end portion 22u. After that, the manufacturing method may include an insertion step of inserting the insulating member 32 between the coil end portions 22u, 22v, 22w of different phases. By doing so, for example, as compared with the case where each member is assembled to the stator core 15 in the order in which the members are vertically overlapped, the steps of assembling the coil end portions 22u, 22v, 22w can be continuously performed, and the manufacturing process can be performed. It can be simplified. In the case of manufacturing in this way, it is preferable that the insulating member 32 is a plurality of insulating members in the circumferential direction, such as the insulating members 74v and 74w of the above alternative example (see FIG. 14).
・上記実施形態では、突起３１は、異なる相の線材２３同士の間、言い換えると異なる相の軸方向コイル部２１ｕ，２１ｖ，２１ｗ同士の間に設けられるとしたが、これに限定されず、異なる相の線材２３同士の間以外の位置に設けてもよい。 -In the above embodiment, the protrusion 31 is provided between the wire rods 23 of different phases, in other words, between the axial coil portions 21u, 21v, 21w of different phases, but the present invention is not limited to this, and is different. It may be provided at a position other than between the phase wire rods 23.
・上記実施形態では、突起３１は、線材２３の半径以下であって半径より小さい突出量で径方向外側に突出するとしたが、これに限定されず、線材２３の半径よりも大きい突出量で径方向外側に突出させてもよい。 -In the above embodiment, the protrusion 31 is said to protrude outward in the radial direction with a protrusion amount smaller than the radius of the wire rod 23 and smaller than the radius, but the diameter is not limited to this and is larger than the radius of the wire rod 23. It may be projected outward in the direction.
・上記実施形態では、突起３１は、線材２３の周面に沿った湾曲面３１ａを有するとしたが、これに限定されず、湾曲面３１ａを有していない形状としてもよい。
・上記実施形態では、自身の相のコイルエンド部２２ｕ，２２ｖ，２２ｗと軸方向に重なるコイル１６ｕ，１６ｖ，１６ｗの一端４１ｕ，４１ｖ，４１ｗは、全てコイルエンド部２２ｕ，２２ｖ，２２ｗの上中下の層の軸方向の範囲内に配置されるとしたが、これに限定されず、４層以上の範囲に配置される構成としてもよい。
-In the above embodiment, the protrusion 31 has a curved surface 31a along the peripheral surface of the wire rod 23, but the present invention is not limited to this, and the protrusion 31 may have a shape that does not have the curved surface 31a.
In the above embodiment, the ends 41u, 41v, 41w of the coils 16u, 16v, 16w that overlap with the coil end portions 22u, 22v, 22w of their own phase in the axial direction are all above the coil end portions 22u, 22v, 22w. Although it is said that the layers are arranged within the axial range of the lower layer, the present invention is not limited to this, and the configuration may be such that the layers are arranged within the range of four or more layers.
・上記実施形態では、突起３１は、ステータコア１５に一体成形されたものとしたが、これに限定されず、ステータコアと別部材で構成してもよく、例えば、ステータコア１５の外周面に固定される絶縁性部材に突起を形成してもよい。 -In the above embodiment, the protrusion 31 is integrally molded with the stator core 15, but the present invention is not limited to this, and the protrusion 31 may be formed of a separate member from the stator core, and is fixed to, for example, the outer peripheral surface of the stator core 15. Protrusions may be formed on the insulating member.
・上記実施形態では、線材２３は、単に一本の導体にエナメル被覆が施されたものとしたが、これに限定されず、例えば、細い導体を束ねた構成を有する束線としてもよい。 -In the above embodiment, the wire rod 23 is simply a single conductor coated with enamel, but the present invention is not limited to this, and for example, a bundled wire having a structure in which thin conductors are bundled may be used.
１１…スロットレス回転電機、１５…ステータコア（固定部材）、１６，１６ｕ，１６ｖ，１６ｗ…コイル、２１，２１ｕ，２１ｖ，２１ｗ…軸方向コイル部、２２，２２ｕ，２２ｖ，２２ｗ…コイルエンド部、２３…線材、３１…突起、３１ａ…湾曲面。 11 ... Slotless rotary electric machine, 15 ... Stator core (fixing member), 16, 16u, 16v, 16w ... Coil, 21,21u, 21v, 21w ... Axial coil part, 22, 22u, 22v, 22w ... Coil end part, 23 ... Wire rod, 31 ... Projection, 31a ... Curved surface.
Claims (5)
前記固定部材の周面には、前記コイルを構成する線材（２３）の直径以下の突出量で径方向に突出して前記線材と周方向に係合する突起（３１）が設けられたスロットレス回転電機。 A fixing member (15) having a peripheral surface, an axial coil portion (21,21u, 21v, 21w) extending in the axial direction along the peripheral surface of the fixing member, and a pair of the axial coil portions in the circumferential direction. A coil (16, 16u, 16v, 16w) having a coil end portion (22, 22u, 22v, 22w) connected to the coil end portion is provided, and the axial direction coil portions connected at the coil end portion are connected in the circumferential direction. A slotless rotary electric machine (11) in which the axial coil portion of another phase is arranged between the two.
Slotless rotation provided on the peripheral surface of the fixing member with a protrusion (31) that protrudes in the radial direction with a protrusion amount equal to or less than the diameter of the wire rod (23) constituting the coil and engages with the wire rod in the circumferential direction. Electric.
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| JP2019143043A JP2021027666A (en) | 2019-08-02 | 2019-08-02 | Slotless rotary electric machine |
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| JP2019143043A JP2021027666A (en) | 2019-08-02 | 2019-08-02 | Slotless rotary electric machine |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5467607A (en) * | 1977-11-09 | 1979-05-31 | Hitachi Ltd | Gap winding rotary machine |
| JP2019106864A (en) * | 2017-07-21 | 2019-06-27 | 株式会社デンソー | Rotating electrical machine |
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2019
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5467607A (en) * | 1977-11-09 | 1979-05-31 | Hitachi Ltd | Gap winding rotary machine |
| JP2019106864A (en) * | 2017-07-21 | 2019-06-27 | 株式会社デンソー | Rotating electrical machine |
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