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    • 13. 发明公开
    • POSITION SENSOR
    • 位置传感器
    • EP1727968A2
    • 2006-12-06
    • EP05705697.0
    • 2005-01-14
    • Control Products Inc.
    • GLASSON, Richard O.
    • F01B31/12F16C1/10
    • F15B15/283Y10T74/20402
    • A position sensor (10) includes a stationary frame (12) supporting a rotatable spool (20) onto which a cable (28) is wound in a plurality of individual windings (30). A distal end of the cable (28) extends through a lead guide (34) for attachment to an object whose position is desired to be sensed. As the object moves, the cable (28) is wound or unwound about the spool (20) and the spool (20) rotates in direct correlation to the movement of the object. The spool (20) is retained in the frame (12) through a threaded engagement between a threaded extension (22) extending from the spool (20) and a threaded opening in the frame (12). Thus, as the spool (20) rotates, the spool (20) travels along a linear path and a sensor (58) determines the location of the threaded extension (22) to determine the location of the object. A recoil spring (40) is used which may be located within the spool (20) itself.
    • 位置传感器(10)包括支撑可旋转卷轴(20)的固定框架(12),线缆(28)缠绕在多个单独绕组(30)上。 电缆(28)的远端延伸穿过引导件(34)以附接到期望被感测位置的物体。 当物体移动时,缆索(28)围绕卷轴(20)缠绕或松开,并且卷轴(20)与物体的运动直接相关地旋转。 阀芯(20)通过从阀芯(20)延伸的螺纹延伸部(22)和框架(12)中的螺纹开口之间的螺纹接合而保持在框架(12)中。 因此,随着阀芯(20)旋转,阀芯(20)沿直线路径行进,并且传感器(58)确定螺纹延伸部(22)的位置以确定对象的位置。 使用可位于线轴(20)自身内的反冲弹簧(40)。
    • 15. 发明公开
    • Precision sensor for a hydraulic cylinder
    • 用于液压缸的精密传感器
    • EP1443218A2
    • 2004-08-04
    • EP04009658.8
    • 1999-10-18
    • Control Products Inc.
    • Glasson, Richard O.
    • F15B15/28
    • F15B15/283G01D5/2291
    • A sensor (218) mountable within a hydraulic cylinder (200) provides a precision signal indicative of the position of the piston (212) utilizing a non-contacting electromechanical transducer. The sensor includes a flexible connector (216) attached between the cylinder piston and a converting element (220) for sensing the displacement of the cylinder piston. The converting element comprises a pick-up spool (310) coupled to the other end of the connector and rotatable about an axis. The spool is under tension from a spring (317) coupled to the spool. A lead screw (324) engages threads on the interior of the spool, and translates along an axis when the spool rotates. A transducer (323) is disposed to sense the position of the lead screw, and provides an output signal proportional to the motion or position of the movable element. The transducer may be an LVDT or other non-contacting transducer.
    • 可安装在液压缸(200)内的传感器(218)利用非接触式机电换能器提供指示活塞(212)的位置的精确信号。 传感器包括附接在缸活塞和转换元件(220)之间的柔性连接器(216),用于感测缸活塞的位移。 转换元件包括耦合到连接器的另一端并可绕轴线旋转的拾取线轴(310)。 卷轴受到与卷轴相连的弹簧(317)的拉伸。 丝杠(324)与卷轴内部的螺纹啮合,并在卷轴旋转时沿着轴线平移。 传感器(323)设置为感测丝杠的位置,并提供与可动元件的运动或位置成比例的输出信号。 换能器可以是LVDT或其他非接触式换能器。