公开(公告)号：US06759934B2

公开(公告)日：2004-07-06

申请号：US10004638

申请日：2001-12-05

申请人： Raul A. Bircann ,  Melissa Bargmann ,  Dwight O. Palmer

发明人： Raul A. Bircann ,  Melissa Bargmann ,  Dwight O. Palmer

IPC分类号： H01F300

CPC分类号： H01F7/081 ,  F16K31/0655 ,  F16K31/0675

摘要： A proportionally-controllable solenoid including primary and secondary pole pieces that surround an armature axially movable along an axial channel within the pole pieces. The pole pieces are separated axially by an air gap and are conically tapered toward the gap. The leading and trailing faces of the armature are substantially orthogonal to its direction of travel to minimize radial parasitic forces on these faces. Further, the armature is also lengthened such that the trailing face is always outside the axial channel in the secondary pole piece at all points of axial travel to minimize the pull-back effect of axial flux vectors on the trailing face.

摘要翻译： 一种按比例控制的螺线管，包括主极和次级极片，其包围可沿着极片内的轴向通道轴向移动的衔铁。 极片由气隙轴向分开，并且朝向间隙锥形渐缩。 电枢的前导面和后表面基本上与其行进方向正交，以最小化这些面上的径向寄生力。 此外，电枢也被延长，使得在轴向行进的所有点处，后面总是在次级极片中的轴向通道的外侧，以最小化轴向通量矢量在后表面上的回拉效应。