| 摘要 |
PURPOSE:To perform rapid and sure speed control to gain the smooth moving action of the moving member by arranging a speed detecting means for detecting the moving speed of the moving member in order to apply braking to the moving member according to the moving speed. CONSTITUTION:The rollers 6, 7, which are free rotatably set up to the moving member 4, are engaged to a pair of guide rails 5a, 5b, which are horizontally fitted up in order to provide the moving member 4 along the guide rails 5a, 5b. The lower end of the moving member 4 is provided with a magnet 8 constituting a field pole to fix a coil opposing to said magnet 8 through a prescribed air gap to the base 10. And and axis of rotation 11a of the generator 11 for detecting the moving speed of the moving member 4 is fixed, for example, to a roller 6 to make the generator 11 to generate the performance according to the rotation speed of the roller 6, i.g. to the moving speed of the moving member 4, and further the braking is applied to the moving member 4. |
