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    • 2. 发明授权
    • Automatic belt tensioner
    • 自动皮带张紧器
    • US4747811A
    • 1988-05-31
    • US006503
    • 1987-01-21
    • Shuji SawafujiMasahiro OzawaHiroshi Yoshikawa
    • Shuji SawafujiMasahiro OzawaHiroshi Yoshikawa
    • F16H7/08F16H7/12
    • F16H7/1281F16H2007/0806F16H2007/081
    • A belt tensioner has a shaft having an oil reservoir in a lower portion thereof and having an external thread and rotatably mounted in a body, a torsion spring provided between the body and the shaft so as to urge the shaft in a rotational direction, and a cylindrical rod having an internal thread engaged with the external thread of the shaft. A lower end of the rod being projected from the body so as to be operatively connected to a tension pulley for a belt. The torsion spring and both the threads are arranged to project rod by the rotation of the shaft urged by the torsion spring. An oil passage is provided in the shaft so as to communicate the oil reservoir with the bore above the internal thread of the rod.
    • 皮带张紧器具有在其下部具有储油器并具有外螺纹并且可旋转地安装在主体中的轴,设置在主体和轴之间的扭转弹簧,以沿轴向推动轴,并且 具有与轴的外螺纹接合的内螺纹的圆柱形杆。 杆的下端从主体突出以便可操作地连接到用于皮带的张力皮带轮。 扭簧和两个螺纹被布置成通过由扭转弹簧推动的轴的旋转来突出杆。 在轴中设置有油通道,以使储油器与杆的内螺纹上方的孔连通。