| 摘要 |
PURPOSE:To assure the vibration preventing effect and to avoid the drop of an output, by providing a stylus having a screw thread-shaped projection and a guide face and securing a linear motion through the engagement between a screw shaft and the stylus. CONSTITUTION:A carriage 1 ha a projection part at both ends of its single side, and a screw shaft 3 which is connected to a step motor 2 to be turned pierces through both projection parts. A chevroned guide part 5 having a guide face 4 at the top part plus a chevroned guide part 7 having a guide face 6 at the top part are fixed to the side faces opposite to the projected surfaces of the carriage 1 and with the faces 4 and 6 set opposedly to each other. A guide shaft 8 which is stretched in parallel to the surface 3 is put into a space formed by the faces 4 and 6 to be fitted to these faces 4 and 6. |
