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    • 1. 发明授权
    • Linear guide apparatus
    • 直线导轨装置
    • US07089819B2
    • 2006-08-15
    • US10443877
    • 2003-05-23
    • Takayuki YabeMasato Katou
    • Takayuki YabeMasato Katou
    • F16H27/02
    • F16C29/08F16C29/06F16H25/2204F16H25/2418Y10T74/18712Y10T74/18744
    • A ball screw has a screw shaft including a screw groove formed in an outer peripheral surface thereof; a nut including a screw groove formed in an inner peripheral surface thereof and screwed together with the screw shaft through a large number of balls rollably disposed in a spiral-shaped ball rolling passage formed by the two screw grooves; and, two seals respectively disposed on the two end portions of the nut for sealing the opening of a clearance between the screw shaft and the nut, wherein two annular grooves are respectively formed in the inner peripheral surfaces of the two end portions of the nut, each of the seals is formed in a substantially annular-ring shape having an outside diameter larger than the inside diameter of the nut and the seals are mounted into the nut by fitting the outer edge portions of the seals into the annular grooves.
    • 滚珠丝杠具有螺杆轴,该螺杆轴在其外周面形成有螺纹槽, 螺母,其包括形成在其内周面中的螺纹槽,并且通过大量滚珠旋转地设置在由两个螺纹槽形成的螺旋形滚珠滚动通道中的滚珠与螺杆轴螺纹连接; 以及分别设置在螺母的两个端部上的两个密封件,用于密封螺杆轴和螺母之间的间隙的开口,其中两个环形槽分别形成在螺母的两个端部的内周表面中, 每个密封件形成为具有比螺母的内径大的外径的大致环形形状,并且通过将密封件的外边缘部分装配到环形槽中将密封件安装到螺母中。