ELECTRIC ACTUATOR

To provide an electric actuator structured to prevent a cured adhesive fixing a magnet from peeling off.SOLUTION: An electric actuator 10 comprises: a motor unit; an output shaft 61 which extends in a predetermined direction and to which rotations of the motor unit are transmitted; a magnet holder 6...

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Bibliographic Details
Main Authors KANG YOUNG DAE, SHIZUKU OSAMICHI
Format Patent
LanguageEnglish
Japanese
Published 26.07.2021
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Summary:To provide an electric actuator structured to prevent a cured adhesive fixing a magnet from peeling off.SOLUTION: An electric actuator 10 comprises: a motor unit; an output shaft 61 which extends in a predetermined direction and to which rotations of the motor unit are transmitted; a magnet holder 64 which is in a cylindrical shape fitted to the output shaft, and fixed to the output shaft; and a magnet 63 which is fixed to the magnet holder. The magnet holder includes: a large diameter part 64a; and a small diameter part 64b of which the outer diameter is smaller than the large diameter part and which is connected through a step to one side of the large diameter part in the predetermined direction. The magnet is formed in an annular shape fitted from the outside to the small diameter part, and fixed to the magnet holder by an adhesive 68. The large diameter part supports the magnet from the other side in the predetermined direction. An outer peripheral surface of the magnet is positioned outside of an outer peripheral surface of the large diameter part in a radial direction of the output shaft.SELECTED DRAWING: Figure 4 【課題】マグネットを固定する硬化した接着剤が剥がれ落ち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10は、モータ部と、所定方向に延び、モータ部の回転が伝達される出力シャフト61と、出力シャフトに嵌め合わされた筒状であり、出力シャフトに固定されたマグネットホルダ64と、マグネットホルダに固定されたマグネット63と、を備える。マグネットホルダは、大径部64aと、大径部よりも外径が小さく、大径部の所定方向の一方側に段差を介して繋がる小径部64bと、を有する。マグネットは、小径部に外側から嵌め合わされた環状であり、かつ、マグネットホルダに接着剤68で固定されている。大径部は、マグネットを所定方向の他方側から支持している。マグネットの外周面は、出力シャフトの径方向において大径部の外周面よりも外側に位置する。【選択図】図4
Bibliography:Application Number: JP20190235682