| 摘要 |
PURPOSE:To make it possible to adjust the distance between a hammer and a platen with good accuracy by a simple structure, by providing a bearing having an eccentric hole and a flange part. CONSTITUTION:The screw hold 26 coaxial to the center axis of an auxiliary shaft 25 is provided to one end surface of the auxiliary shaft 25 shaved in a D-shape at both ends thereof and a lever 27 is fixed by this screw hole 26 and the projection of a bearing 19. In order to stop the auxiliary shaft 25 at several positions, a bent part 28 is provided to the lever 27 and engaged with the hole 29 of a chasis. When the lever 27 is moved, because the screw hole 26 of the auxiliary shaft 25 is eccentric to the center axis of the outer diameter part 21 of the bearing 19, that is, the rotary shaft thereof, the height of the auxiliary shaft can be changed. |
