| 摘要 |
PURPOSE: A structure of an arrow shooting device is provided to reduce a disconnection of string by locating string stop rollers in front of differential cam. CONSTITUTION: A structure of an arrow shooting device comprises a body(Bo), a rubber band(RB), a differential pulley, a pair of string stop rollers(SR). The rubber band is used as the energy storage means. The differential pulley has a pair of differential pulley large leaf(DPLL) and differential pulley small leaf(DPSL). A pair of differential pulley large leaves is installed in the end of the cylindrical axis(Ax). The differential pulley small leaf is installed in the outside of each differential pulley large leaf. A pair of string stop rollers is installed in front of differential pulley. |
