To provide an electric actuator which can further surely avoid a stuck between slide components of a whirl-stop mechanism part, and a hydraulic pressure generator having the same.SOLUTION: An electric actuator comprises a whirl-stop mechanism part 35 for whirl-stopping a ball screw shaft 27a. The whirl-stop mechanism part 35 has a rotation regulation member 37 arranged at the ball screw shaft 27a, and a guide pin 42 arranged along an axial direction. A guided part 40 is formed at an outside end part 39a of the rotation regulation member 37 in a radial direction along the axial direction. The guide pin 42 guides the rotation regulation member 37 in the axial direction in a state of being at least partially inserted into the guided part 40. A clearance part in the radial direction is formed between an inner face of the guided part 40 and the guide pin 42. When the inner face of the guided part 40 and the guide pin 42 contact with each other while approaching each other in the radial direction, the clearance part forms a space in the radial direction between the inner face of the guided part 40 and the guide pin 42.SELECTED DRAWING: Figure 3
【課題】回り止め機構部における摺動する部品間でのスタックをより確実に回避できる電動アクチュエータおよびそれを備えた液圧発生装置を提供する。【解決手段】電動アクチュエータは、ボールねじ軸27aの回り止めを行う回り止め機構部35を備える。回り止め機構部35は、ボールねじ軸27aに設けられた回転規制部材37と、軸方向に沿って配置された案内ピン42とを有する。回転規制部材37の径方向外側端部39aに、軸方向に沿って被案内部40が形成されている。案内ピン42は、被案内部40内に少なくとも一部が入った状態で回転規制部材37を軸方向に案内する。被案内部40の内面と案内ピン42との間に、径方向のクリアランス部が設けられている。クリアランス部は、被案内部40の内面と案内ピン42とが径方向に近接して接触した場合において、被案内部40の内面と案内ピン42との間に径方向の空間を形成する。【選択図】図3
ELECTRIC ACTUATOR AND HYDRAULIC PRESSURE GENERATOR HAVING THE SAME
電動アクチュエータおよびそれを備えた液圧発生装置
13.10.2023
Patent
Elektronische Ressource
Japanisch
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