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    • 9. 发明授权
    • Pulley
    • 滑轮
    • US06929575B2
    • 2005-08-16
    • US10395054
    • 2003-03-25
    • Hiroyuki TakahashiAtsushi Kosaka
    • Hiroyuki TakahashiAtsushi Kosaka
    • F16H55/36B29C43/18B29C45/14B29K61/04B29K105/22B29L31/32F16H55/48
    • F16H55/48
    • A pulley comprises a disk and an insert. The insert is fitted into the center of the disk integrally. Linear expansion coefficient of the disk is larger than the same of the insert. A concavity is formed on a periphery surface of the insert so that both side surfaces of the concavity are slanted outwardly, i.e. a distance between the side surfaces become large in proportion to being far from the centerline of the insert. When a slanting angle is defined as an angle between the side surface and a line which is perpendicular to the centerline of the insert on a plane including the centerline of the insert, the slanting angle is set from ten degrees to forty-five degrees, preferably from fifteen degrees to forty-five degrees. The disk is made of synthetic resin such as phenol resin, and the insert is made of metal such as iron.
    • 滑轮包括盘和插入件。 插入件整体安装在盘的中心。 盘的线膨胀系数大于插入的相同值。 在插入件的周边表面上形成凹部,使得凹部的两个侧面向外倾斜,即侧面之间的距离与远离插入件的中心线成比例变大。 当倾斜角度被定义为在包括插入件的中心线的平面上垂直于插入件的中心线的侧表面和直线之间的角度时,倾斜角度被设定为十度至四十五度,优选地 从十五度到四十五度。 盘由酚醛树脂等合成树脂制成,插入物由铁等金属制成。