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    • 7. 发明授权
    • Ball screw mechanism
    • 滚珠丝杠机构
    • US08584546B2
    • 2013-11-19
    • US12545508
    • 2009-08-21
    • Yoshihiro FukanoToru SugiyamaMasaki Imamura
    • Yoshihiro FukanoToru SugiyamaMasaki Imamura
    • F16H1/24
    • F16H25/2219
    • A ball screw mechanism is equipped with a ball screw shaft formed from a metallic material, a displacement nut inserted over an outer circumferential side of the ball screw shaft, steel balls installed between a first screw groove formed on the ball screw shaft and a second screw groove formed in the displacement nut, and a pair of first and second return members, through which the steel balls are circulated between one end side and another end side of the displacement nut. The first and second return members include main body parts mounted respectively onto one end and another end of the displacement nut, and cylindrical parts that project outwardly with respect to the main body parts. A return passage, through which the steel balls are circulated, is formed inside of the main body parts and the cylindrical parts.
    • 滚珠丝杠机构配备有由金属材料形成的滚珠丝杠轴,插入滚珠丝杠轴的外周侧的移动螺母,安装在形成于滚珠丝杠轴上的第一螺旋槽与第二螺丝 形成在位移螺母中的槽,以及一对第一和第二返回构件,钢球通过该一对第一和第二返回构件在位移螺母的一端侧和另一端侧之间循环。 第一和第二返回构件包括分别安装在位移螺母的一端和另一端的主体部分和相对于主体部分向外突出的圆柱形部件。 钢球循环的返回通道形成在主体部分和圆柱形部分的内部。