STEPPING MOTOR

• Main Authors: KASAMA HIROKI, TAKAHATA KAZUAKI, SHIBATA KAZUMASA, ENDO RIE, YOKOYAMA KATSUNORI, YAMAMOTO MASAMICHI
• Format: Patent
• Language: English; Japanese
• Published: 05.07.2018
• Subjects: CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; DYNAMO-ELECTRIC MACHINES; ELECTRICITY; GENERATION

PROBLEM TO BE SOLVED: To provide a stepping motor in which vibration reduction in an axial direction of a motor rotary shaft is sufficiently enhanced.SOLUTION: The stepping motor includes: a rotor having a rotary shaft and having north poles and south poles arranged alternately in a circumferential direction as magnetic poles; a side oblique to the magnetic pole shape of the rotor; a stator in which a tooth shape provided in an axial direction of the rotary shaft is arranged in the circumferential direction; a mass body for reducing vibration in an axial direction of the rotor; a first elastic member connected to the rotary shaft or the rotor in the axial direction; a second elastic member that holds the mass body together with the first elastic member in the axial direction; and a first holding member holding at least the second elastic member.SELECTED DRAWING: Figure 4 【課題】モータ回転軸の軸線方向における振動低減を十分に高めたステッピングモータを提供する。【解決手段】回転軸を備え、磁極としてＮ極とＳ極を周方向に交互に配置したロータと、前記ロータの磁極形状に対し斜めとなる辺を備え、前記回転軸の軸線方向に設けられる歯形状を周方向に配置したステータと、前記ロータの前記軸線方向における振動を低減するための質量体と、前記軸線方向において前記回転軸または前記ロータに接続される第１の弾性部材と、前記軸線方向において前記第１の弾性部材と共に前記質量体を挟持する第２の弾性部材と、少なくとも前記第２の弾性部材を保持する第１の保持部材と、を有する。【選択図】図４