| 摘要 |
PURPOSE:To eliminate the vibration of a traveling frame and obtain the stable traveling by a method wherein the traveling frame is supported by a traveling guide shaft on one hand and by the combination of a roller, a magnet and a fixed frame on the other hand. CONSTITUTION:A traveling frame 3 is guided to the longitudinal direction by a traveling quide shaft 4 and transferred to the direction from the front to the back of a drawing. A roller 30 and a magnet 31 are provided to the side of the leading end part of an arm portion 9 of the frame 3 and a fixed frame 32 which holds a scale plate 6 is made of ferromagnetic substance, so that the frame 3 is moved vertically by using the inside surface of the frame 32 as a guide surface. A pen supporting pin 20 is stood on the arm portion 9 and a magnet 33 is embeded. On the other hand an iron piece 34 is embeded to a recording pen 7 at the position facing the magnet 33 and the pen 7 is held at the base of the pin 20 by the self weight and the magnetic force. Thus by supporting the frame 3 by the guide shaft 4 and by the frame 32 via magnetic attraction force, the vibration of the frame is eliminated and the stable traveling can be obtained. |
