公开(公告)号：US06557686B1

公开(公告)日：2003-05-06

申请号：US09548757

申请日：2000-04-13

Applicant: Walter J. Budd ,  Steve R. Hojnacki ,  Thomas J. Dolinshek

Inventor： Walter J. Budd ,  Steve R. Hojnacki ,  Thomas J. Dolinshek

IPC: F16D1900

CPC classification number: F16D35/028

Abstract: An electro-magnetic actuator includes a shaft having a first end portion and a second end portion and a nut having an inner peripheral surface and an outer peripheral surface. The inner peripheral surface of the nut is coupled with the first end portion of the shaft. A bearing is disposed around the second end portion of the shaft for rotatably supporting the shaft. An electrical coil is disposed around the shaft between the nut and the bearing for receiving electrical current and producing magnetic flux. A ferromagnetic can is disposed around the shaft having a peripheral surface extending between the shaft and the outer peripheral surface of the nut for establishing a path for magnetic flux flow there between. The peripheral surface of the can is interposed between the electrical coil and the bearing partitioning the electrical oil inside the can and the bearing outside the can.

Abstract translation: 电磁致动器包括具有第一端部和第二端部的轴以及具有内周面和外周面的螺母。 螺母的内周面与轴的第一端部连接。 轴承围绕轴的第二端部设置以可旋转地支撑轴。 在螺母和轴承之间围绕轴设置电线圈以接收电流并产生磁通量。 一个铁磁罐设置在轴周围，该外周表面在该轴与该螺母的外周表面之间延伸，用于建立一个用于在其间的磁通流动的路径。 罐的周边表面插入在电线圈和将罐内的电油分隔开的轴承和罐外的轴承之间。