| 摘要 |
PURPOSE:To easily mount and remove a polygon mirror for a bar code scanner to and from a rotor yoke without touching the mirror with the hand. CONSTITUTION:The first step part 152 of the rotor yoke 15 is fitted to a lower recessed part 121 of the polygon mirror 12 for the scanner. A mounting member 13 is inserted from a cylindrical body 154 and is pushed into a recessed part formed by an upper recessed part 122 of the polygon mirror 12 for the scanner and the second step part 153 of the rotor yoke 15. At this time, plural internal teeth 133 formed on the inner side of the mounting member 13 are inserted into the recessed part while these teeth engage with the cylindrical body 154. The plural outer teeth 132 formed on the outer side of the mounting member 13 have the spacing from the side face of the upper recessed part 122 formed at the polygon mirror 12 for the scanner and are pushed downward by the spring property of the mounting member 13 itself. |
