ROTARY ELECTRIC MACHINE

• Main Authors: MAKISHI WATARU, SASAKI TOMONORI, SHIMIZU KENTA
• Format: Patent
• Language: English; Japanese
• Published: 07.09.2022
• Subjects: CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; DYNAMO-ELECTRIC MACHINES; ELECTRICITY; GENERATION

To prevent a rise in drive voltage of a rotary electric machine while reducing a leakage flux.SOLUTION: A rotor 19 has: a shaft member 40; and a magnetic material 30 which is adjacent to the shaft member 40 in an axial direction X of the shaft member 40. A stator core 61 has an inner face 76 which defines an internal space penetrating the stator core in the axial direction X. The magnetic material 30 has an outer face 30a which is spaced away from the inner face 76 in a radial direction Y perpendicular to an axis L of the shaft member 40. The inner face 76 and the outer face 30a are parallel to each other. The inner face 76 is made up of an intermediate inner face 76a and a pair of end inner faces 76b. The intermediate inner face 76a is located so as to include an intermediate point of the inner face 76 in the axial direction X. The pair of end inner faces 76b is located so as to sandwich the intermediate inner face 76a in the axial direction X. When cross-sectional shapes of the stator core 61 and the magnetic material 30 along the axis L is viewed, a distance in the radial direction Y from the outer face 30a to the intermediate inner face 76a is shorter than that from the outer face to each of the pair of end inner faces 76b.SELECTED DRAWING: Figure 1 【課題】漏れ磁束を低減しつつ、回転電機の駆動電圧の上昇を抑制する。【解決手段】ロータ１９は、軸部材４０と、軸部材４０の軸線方向Ｘにおいて軸部材４０と隣り合う磁性体３０と、を有する。ステータコア６１は、軸線方向Ｘに貫通する内部空間を区画形成する内面７６を有する。磁性体３０は、軸部材４０の軸線Ｌに直交する径方向Ｙにおいて内面７６から離間する外面３０ａを有する。内面７６と外面３０ａとは互いに平行である。内面７６は、中間内面７６ａ及び一対の端部内面７６ｂで構成されている。中間内面７６ａは、軸線方向Ｘにおける内面７６の中間位置を含んで位置する。一対の端部内面７６ｂは、軸線方向Ｘにおいて中間内面７６ａを挟んで位置する。ステータコア６１及び磁性体３０の軸線Ｌに沿った断面形状をみたとき、中間内面７６ａは、径方向Ｙにおける外面３０ａとの離間寸法が一対の端部内面７６ｂよりも小さい。【選択図】図１