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    • 8. 发明授权
    • Sensing mirror position in a powered mirror positioning system
    • 在镜子定位系统中检测镜头位置
    • US06478436B1
    • 2002-11-12
    • US09862930
    • 2001-05-22
    • Peter M. Jacobsen
    • Peter M. Jacobsen
    • G02B7182
    • B60R1/072
    • An axial lead screw having one end pivotally connected to a rearview mirror is threadedly engaged by a motor driven worm gear, which upon rotation effects axial movement of the lead screw. A pair of flux collectors are disposed on opposite sides of the lead screw adjacent the distal end. A Hall effect sensor is disposed in one of the flux collectors. The distal end of the lead screw is magnetized and the Hall effect sensor provides a signal indicative of the lead screw movement. In one embodiment, the lead screw is magnetized; and, in another embodiment a permanent magnet is inserted in a bore in the distal end of the lead screw.
    • 一个轴向导螺杆,其一端可枢转地连接到后视镜,由马达驱动的蜗轮螺纹地接合,马达驱动的蜗轮在旋转时引起丝杠的轴向移动。 一对磁通收集器设置在与远端相邻的导螺杆的相对侧上。 霍尔效应传感器设置在一个通量收集器中。 导螺杆的远端被磁化,霍尔效应传感器提供指示丝杠运动的信号。 在一个实施例中,导螺杆被磁化; 并且在另一个实施例中,永磁体被插入导螺杆远端的孔中。