| 摘要 |
PURPOSE:To effectively absorb the swing, pulsation and impact of a revolving belt even when an arm is inclined rightward and leftward, by providing a rectangular hole in a secured plate, placing a rocker shaft in the hole on its diagonal and fitting elastic members in the openings of the hole. CONSTITUTION:A rocker shaft 18 is placed in the rectangular hole 17 of a secured plate 11 on the diagonal of the hole. Elastic members 28 are fitted in the two isosceles-triangle-shaped openings of the hole 17 which are defined by placing the rocker shaft 18 in the hole. When the shaft 18 has rocked in a direction A during the driving of a revolving belt 4, the elastic members 28 are pushed and elastically deformed while storing a repulsive force. When the shaft 18 has rocked in the opposite direction, the elastic members 18 are likewise pushed and elastically deformed while storing a repulsive force. The swing, pulsation and impact of the revolving belt 4 are thus absorbed for adjustment to automatically apply a constant tension to the belt. |
