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热词
    • 5. 发明授权
    • Electromagnetic band clutch
    • 电磁带离合器
    • US4217976A
    • 1980-08-19
    • US900829
    • 1978-04-28
    • Allen W. DeJong
    • Allen W. DeJong
    • F01P7/08F16D27/02F16D43/25F16D13/10
    • F01P7/081F16D27/02F16D43/25
    • An electromechanical clutch for vehicle engine cooling fans includes a driving member mounted for rotation by the vehicle engine and a driven member rotatably mounted on the driving member. The driven member carries the engine cooling fan. One end of a metal band is connected to the driven member, and wraps circumferentially around the driving member in the direction of rotation of the latter. An electromagnetic coil comprising windings wound circumferentially around the driving member and rotatable therewith exert an electromagnetic force on the band when current is transmitted to the coil, drawing the band into engagement with the outer circumferential surface of the driving member, to thereby engage the clutch and cause the engine cooling fan to be rotated with the driving member. Because of the wrapping effect of the band when it engages the outer circumferential surface of the driving member, the electromagnetic force necessary to actuate the clutch is multiplied as the clutch is engaged through the servo action caused by the band wrapping around the driving member. The electrical signal is transmitted to the coil through a slip ring, and is controlled by conventional engine temperature and/or pressure sensors.
    • 用于车辆发动机冷却风扇的机电离合器包括安装用于由车辆发动机转动的驱动构件和可旋转地安装在驱动构件上的从动构件。 从动构件承载发动机冷却风扇。 金属带的一端与被驱动部件连接,沿着驱动部件的旋转方向周向地卷绕。 一种电磁线圈,包括围绕驱动构件周向缠绕的绕组,并且当电流传递到线圈时可绕其旋转并施加电磁力,拉动带与驱动构件的外周表面接合,从而接合离合器和 使发动机冷却风扇与驱动构件一起旋转。 由于带在与驱动构件的外周面接合时的缠绕效果,因为离合器通过由缠绕在驱动构件上的带缠绕引起的伺服动作而接合,所以驱动离合器所需的电磁力相乘。 电信号通过滑环传输到线圈,并由传统的发动机温度和/或压力传感器控制。