| 摘要 |
PURPOSE:To secure a sufficient gear width and to well keep the use way of a knob part touched by a finger, by providing the knob part built up so as to have an outer diameter almost same to that of a gear to the entire periphery of the end surface of the gear on the finger engaging side thereof. CONSTITUTION:A built-up part 12 is provided to the end surface of a gear part 11 over the entire periphery thereof on the finger engaging side of said gear part 11 and a knob part rotated manually by the touching of a finger is formed to the outer peripheral surface 12A thereof. The outer peripheral surface 12A has the same diameter as the gear head circle of the gear part 11 and the gear part 11 is formed to the outer peripheral surface of a knob 10 over the almost entire region thereof near to the entire width of said knob 10 and the knob part 12A is formed over the min. width (e.g., 1-several mm). By this constitution, a sheet feed knob having both of function as an original knob and function of a gear for transmitting power is constituted. |
