ELECTRIC ACTUATOR

To provide an electric actuator that has a structure that can stably support an internal tooth gear and can prevent a reduction in productivity.SOLUTION: One aspect of an electric actuator of the present invention comprises: a motor unit that has a motor shaft extending in an axial direction; a dece...

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Bibliographische Detailangaben
Hauptverfasser: KANG YOUNG DAE, MIZUTANI MASUMI, SHIZUKU OSAMICHI
Format: Patent
Sprache:eng ; jpn
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Beschreibung
Zusammenfassung:To provide an electric actuator that has a structure that can stably support an internal tooth gear and can prevent a reduction in productivity.SOLUTION: One aspect of an electric actuator of the present invention comprises: a motor unit that has a motor shaft extending in an axial direction; a deceleration mechanism that is connected with one side in the axial direction of the motor shaft; and a housing that accommodates the motor unit and deceleration mechanism. The deceleration mechanism has an external tooth gear that is connected with the motor shaft, and an internal tooth gear 52 that has a ring shape surrounding the external tooth gear and is meshed with the external tooth gear. The housing has a support surface 14j that supports the internal tooth gear 52 from one side in the axial direction. The support surface 14j has a stretched surface 14k that extends in a circumferential direction around a central axis J1 of the motor unit, and a projection surface 14m that projects inward in a radial direction from the stretched surface 14k.SELECTED DRAWING: Figure 5 【課題】内歯ギアを安定に支持することができ、かつ、生産性が低下することを抑制できる構造を有する電動アクチュエータを提供する。【解決手段】本発明の電動アクチュエータの一つの態様は、軸方向に延びるモータシャフトを有するモータ部と、モータシャフトの軸方向一方側に連結された減速機構と、モータ部および減速機構を収容するハウジングと、を備える。減速機構は、モータシャフトに連結された外歯ギアと、外歯ギアを囲む環状であり、外歯ギアに噛み合う内歯ギア52と、を有する。ハウジングは、内歯ギア52を軸方向一方側から支持する支持面14jを有する。支持面14jは、モータ部の中心軸J1回りの周方向に延びる延伸面14kと、延伸面14kから径方向内側に突出する突出面14mと、を有する。【選択図】図5