ELECTRIC ACTUATOR

• Main Authors: KANG YOUNG DAE, LEE CHENG-YU, SHIZUKU OSAMICHI
• Format: Patent
• Language: English; Japanese
• Published: 26.07.2021
• Subjects: BLASTING; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; DYNAMO-ELECTRIC MACHINES; ELECTRICITY; ENGINEERING ELEMENTS AND UNITS; GEARING; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; GENERATION; HEATING; LIGHTING; MECHANICAL ENGINEERING; THERMAL INSULATION IN GENERAL; WEAPONS

To provide an electric actuator that has a structure that can prevent a foreign substance from entering a motor unit.SOLUTION: An electric actuator comprises: a motor unit having a rotor that is rotatable centered on a central axis J1 extending in an axial direction, and a stator 43 that is located on the outside in a radial direction of the rotor; a deceleration mechanism that is connected with one side in the axial direction of the rotor; a partition member 80 that is located between the stator and the deceleration mechanism in the axial direction; and a housing that accommodates the motor unit, deceleration mechanism, and partition member. The housing has a motor case part 32 that surrounds the motor unit from the outside in the radial direction. The partition member has a main body part 81 that surrounds the central axis and spreads in the radial direction with the central axis as the center, and a peripheral edge wall part 82 that projects to the other side in the axial direction from an outer peripheral edge part of the main body part. The peripheral edge wall part is in contact with an inner peripheral surface of the motor case part.SELECTED DRAWING: Figure 4 【課題】モータ部に異物が侵入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】電動アクチュエータは、軸方向に延びる中心軸Ｊ１を中心として回転可能なロータ、およびロータの径方向外側に位置するステータ４３を有するモータ部と、ロータの軸方向一方側に連結された減速機構と、ステータと減速機構との軸方向の間に位置する仕切部材８０と、モータ部、減速機構、および仕切部材を収容するハウジングと、を備える。ハウジングは、モータ部を径方向外側から囲むモータケース部３２を有する。仕切部材は、中心軸を囲み、中心軸を中心とする径方向に広がる本体部８１と、本体部の外周縁部から軸方向他方側に突出する周縁壁部８２と、を有する。周縁壁部は、モータケース部の内周面に接触している。【選択図】図４