ROTARY MOTOR AND ROBOT ARM

• Main Authors: NISHIDA HIDEAKI, TANAKA KUNIAKI
• Format: Patent
• Language: English; Japanese
• Published: 11.11.2022
• Subjects: CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; DYNAMO-ELECTRIC MACHINES; ELECTRICITY; GENERATION

To provide a rotary motor in which a surface part of a magnet is not demagnetized.SOLUTION: A motor 1 includes a first stator 4 and a rotor 3. The rotor 3 includes a frame 13 connected to a rotation shaft 2, and a permanent magnet 14 fixed to the frame 13. When a direction from the first stator 4 to the rotor 3 is set to be a lower stage upper magnetization direction 38, the permanent magnet 14 includes a plurality of lower stage main magnetic pole magnets 44 in which a magnetization direction is the lower stage upper magnetization direction 38, and a plurality of lower stage second rightward secondary magnets 35 and lower stage second leftward secondary magnets 37 in which the magnetization directions are different from the lower stage upper magnetization direction 38. The lower stage main magnetic pole magnet 44 includes: a lower stage first upper main magnet 32 arranged on a negative side of the lower stage upper magnetization direction 38; and a lower stage second upper main magnet 34 fixed to the frame 13. When the permanent magnet 14 is viewed along the lower stage upper magnetization direction 38, parts of the lower stage first upper main magnet 32, the lower stage second rightward secondary magnets 35 and the lower stage second leftward secondary magnets 37 are overlapped.SELECTED DRAWING: Figure 3 【課題】磁石の表面部分は減磁しない回転モーターを提供する。【解決手段】モーター１は第１ステーター４とローター３とを備え、ローター３は、回転軸２と接続するフレーム１３と、フレーム１３に固定される永久磁石１４と、を備え、第１ステーター４からローター３に向かう方向を下段上向磁化方向３８としたときに、永久磁石１４は、磁化方向が下段上向磁化方向３８である複数の下段主磁極磁石４４と、磁化方向が下段上向磁化方向３８と異なる方向である複数の下段第２右向副磁石３５及び下段第２左向副磁石３７、を備え、下段主磁極磁石４４は、下段上向磁化方向３８の負側に配置される下段第１上向主磁石３２と、フレーム１３に固定される下段第２上向主磁石３４と、を備え、下段上向磁化方向３８に沿って永久磁石１４を見るとき、下段第１上向主磁石３２と下段第２右向副磁石３５及び下段第２左向副磁石３７との一部が重なる。【選択図】図３