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    • 3. 发明授权
    • Hinge joint for use in the seats of motor vehicles and the like
    • 用于机动车辆座椅等的铰链接头
    • US5312158A
    • 1994-05-17
    • US897997
    • 1992-06-16
    • Werner WittigKarin Becker
    • Werner WittigKarin Becker
    • A47C1/025B60N2/22B60N2/225
    • F16H57/041B60N2/2227B60N2/2252
    • A hinge joint for use between the body supporting portion and the pivotable back rest of a seat has a first leaf which is affixed to the body supporting portion, a second leaf which is affixed to the back rest, and a pintle which pivotably connects the second leaf to the first leaf. In order to reduce friction during pivoting of the second leaf, the latter is provided with a sleeve-like central portion which is surrounded by an antifriction bearing installed in the cylindrical portion of a cupped motion transmitting member of the pintle. A smaller-diameter portion of the motion transmitting member is surrounded by two wedge-like arcuate sections which are biased by a torsion spring against a cylindrical internal surface of the first leaf to reduce radial play between the leaves. Friction between the external surfaces of the sections and the internal surface can be reduced by coating some or all of these surfaces with a lubricant. Such lubricant can also be used between the internal surface of the first leaf and an annular centering element which is installed within the first leaf axially adjacent the sections. In addition, friction between the centering element and the first leaf can be reduced by providing the internal surface of the first leaf and/or the external surface of the centering element with facets and/or recesses.
    • 用于座椅的身体支撑部分和可枢转的靠背之间的铰链接头具有固定到主体支撑部分的第一叶片,固定到靠背的第二叶片和枢轴连接第二叶片的枢轴 叶到第一叶。 为了减少在第二叶片的枢转期间的摩擦,后者设置有套筒状中心部分,该中心部分由安装在枢轴的杯形运动传递构件的圆柱形部分中的减摩轴承包围。 运动传递构件的较小直径的部分由两个楔形的弓形部分围绕,该两个楔形弧形部分被扭转弹簧偏压抵靠第一叶片的圆柱形内表面,以减小叶片之间的径向间隙。 通过用润滑剂涂覆这些表面的一些或全部,可以减少部分的外表面与内表面之间的摩擦。 这种润滑剂也可以在第一叶片的内表面和安装在第一叶片内轴向相邻部分的环形定心元件之间使用。 此外,通过设置第一叶片的内表面和/或定心元件的外表面具有面和/或凹部,可以减小定心元件和第一叶片之间的摩擦。