| 摘要 |
PURPOSE:To continuously change an eccentric quantity stagelessly with a simple structure by taking the structure that the eccentric quantity of an eccentric body to a rotary shaft is varied with the eccentric body being moved integrally with a screw rod at the time when the screw rod is rotated. CONSTITUTION:When a rotary shaft 2 is driven A by rotating with the axial line 2a as the center, an eccentric body 3 is rotated integrally with the rotary shaft 2 centering around the axial line 2a. The transmission of the rotary power is surely performed via the engagement part of both the side faces of an eccentric body fitting part 1 and the sliding face of the eccentric body 3. At the time when an eccentric quantity (e) is adjusted, the rotary shaft 2 is fixed so as not to rotate it and a screw rod may be rotated B by engaging the tip of the rotating tool with the notch 11c' of the screw rod 11 in this state. Namely, when the screw rod 11 is rotated, the screw rod 11 is moved in its axial line direction for the rotary shaft 2 and the eccentric body 3 is moved integrally with this screw rod, hence the eccentric quantity (e) of the eccentric body 3 for the rotary shaft 2 is varied. |
