MOTOR AND ACTUATOR

PROBLEM TO BE SOLVED: To provide electric motors and actuators with increased electromagnetic compatibility.SOLUTION: A motor 40 includes a stator and a rotor. The stator includes a motor housing 51 with an open end and an end cover mounted on the open end. The rotor includes a rotor shaft that exte...

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Bibliographic Details
Main Authors LAU JAMES CHING SIK, TIAN GUI HONG, XU QIANG, LAM WING CHEUNG, WU WEN MING, CHEN ZHONGHAI, LUO QINGBIN, WEI XINPENG
Format Patent
LanguageEnglish
Japanese
Published 04.02.2016
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Summary:PROBLEM TO BE SOLVED: To provide electric motors and actuators with increased electromagnetic compatibility.SOLUTION: A motor 40 includes a stator and a rotor. The stator includes a motor housing 51 with an open end and an end cover mounted on the open end. The rotor includes a rotor shaft that extends through the end cover. The end cover includes a bearing that supports the rotor shaft. The rotor shaft and motor housing 51 are made of an electrically conductive material and are electrically connected with each other. The motor housing 51, end cover, bearing and rotor shaft cooperatively form an electromagnetic shield suppressing electromagnetic interference generated by the motor 40. Optionally, the rotor shaft drives a coaxial worm shaft of a gearbox through an insulating member, thereby further suppressing electromagnetic interference.SELECTED DRAWING: Figure 1 【課題】電磁両立性を高めた電気モータ及びアクチュエータを提供する。【解決手段】モータ40は、ステータ及びロータを含む。ステータは、開放端を有するモータハウジング51と、この開放端に取り付けられた端部カバーとを含む。ロータは、端部カバーを貫いて延びるロータシャフトを含む。端部カバーは、ロータシャフトを支持する軸受を含む。ロータシャフト及びモータハウジング51は、導電性材料で作製され、互いに電気的に接続される。モータハウジング51、端部カバー、軸受及びロータシャフトは、モータ40によって生じる電磁干渉を抑制する電磁シールドを協働的に形成する。任意に、ロータシャフトは、ギアボックスの同軸ウォームシャフトを絶縁部材を通じて駆動し、これによって電磁干渉をさらに抑制する。【選択図】図1
Bibliography:Application Number: JP20150116424