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    • 6. 发明授权
    • Heavy duty electronic brake stroke indicator
    • 重型电子制动行程指示器
    • US5450930A
    • 1995-09-19
    • US164396
    • 1993-12-09
    • Timothy F. MartensRobert J. HicksRobert J. Hilding
    • Timothy F. MartensRobert J. HicksRobert J. Hilding
    • B60T17/22F16D66/00F16D66/02
    • F16D66/026F16D66/025F16D66/028F16D2066/003
    • Electronic stroke indicators have sensor structures which are incorporated into a stone shield for a brake actuator. The incorporation of the sensor into the stone shield protects the sensor and its associated wires and contacts from damage by the other components in the brake actuator. In particular, the spring is typically maintained out of contact with any of the electric portions of the electronic stroke indicator, thus prolonging the life of the electronic stroke indicator. In further features of this invention, a magnetic sensor may monitor the position of magnetic portions on a piston rod. Alternatively, a pair of electric contact switches may be serially contacted by a structure on the piston rod as the brake moves further out of stroke. The two electric contacts provided different signals to an operator in a vehicle cab such that signals of the level of out-of-stroke conditions are provided to the operator. In a further embodiment, a load cell monitors the compression in a spring in the brake housing to provide an indication of an out-of-stroke condition.
    • 电子行程指示器具有结合到用于制动致动器的石头罩中的传感器结构。 将传感器并入石屏蔽件可保护传感器及其相关联的电线和触点免受制动执行器中其他部件的损坏。 特别地,弹簧通常保持与电子行程指示器的任何电气部分不接触,从而延长电子行程指示器的寿命。 在本发明的另外的特征中,磁传感器可以监测活塞杆上的磁性部分的位置。 或者,当制动器进一步移动到行程以外时,一对电接触开关可以由活塞杆上的结构串联接触。 两个电触头向车辆驾驶室中的操作者提供不同的信号,使得向操作者提供失调条件水平的信号。 在进一步的实施例中,测力传感器监测制动器壳体中的弹簧中的压缩,以提供失控状态的指示。