| 摘要 |
PURPOSE:To provide the titled apparatus which can reduce cost with a simple assembly construction limited in the number of parts by mounting a worm wheel as specified to be meshed with a worm direct connected to the spindle of a driver motor. CONSTITUTION:A worm wheel 4 whose center of rotation is positioned eccentric for the center of the tooth profile is mounted on a rotating shaft 5 fixed on a print hammer bank 1 reciprocating horizontally with a guide member 7. A worm 3 is mounted directly at the tip of the spindle of a drive motor 2 and invariably meshed with the worm wheel 4 with a spring 6. With the rotation of the worm wheel 4, print hammer bank 1 reciprocates at the specified amplitude parallel to the printing surface of a printing paper 21 guided by a guide member 7. |
