公开(公告)号：US5076715A

公开(公告)日：1991-12-31

申请号：US541116

申请日：1990-06-19

申请人： Kazuhiko Saoyama ,  Yoshihisa Inoue ,  Haruyoshi Endo

发明人： Kazuhiko Saoyama ,  Yoshihisa Inoue ,  Haruyoshi Endo

IPC分类号： A47B88/14 ,  F16C29/04

CPC分类号： F16C33/40 ,  A47B88/14 ,  F16C29/04 ,  F16C33/306 ,  A47B2210/0032 ,  A47B2210/0056 ,  A47B2210/0067

摘要： A linear motion guide unit having a rack and pinion mechanism for preventing slippage in relative sliding motion is provided. The linear motion guide unit includes a table elongated in shape and having a generally U-shaped cross section and a bed elongated in shape and having a generally U-shaped cross section which is oriented with its inner surface facing the inner surface of the table. The unit also includes a plurality of balls sandwiched between the table and the bed so as to provide a rolling contact therebetween. Also provided is a retainer having a horizontal section and a pair of vertical sections extending from the opposite sides of the horizontal section and formed with a plurality of windows for receiving therein the balls. The horizontal section of the retainer is formed with a slot and a pinion gear is rotatably supported on the retainer as extending partly through the slot and at the center in the widthwise direction of the retainer. A pair of top and bottom racks are mounted on the table and the bed, respectively, such that the pinion gear is in mesh with both of the top and bottom racks.

摘要翻译： 提供一种具有用于防止滑动相对滑动的齿条齿轮机构的直线运动引导单元。 直线运动引导单元包括一个呈细长形状并且具有大致U形横截面的台面和一个细长形状的床，并具有大致U形横截面，该横截面的内表面面向桌子的内表面。 该单元还包括夹在桌子和床之间的多个球，以便在它们之间提供滚动接触。 还提供一种具有水平部分和从水平部分的相对侧延伸的一对垂直部分的保持器，并且形成有用于在其中容纳球的多个窗口。 保持器的水平部分形成有槽，并且小齿轮可旋转地支撑在保持器上，部分地延伸穿过槽并沿着保持器的宽度方向的中心延伸。 一对顶架和底架分别安装在工作台和床上，使得小齿轮与顶架和底架两者啮合。