| 摘要 |
PURPOSE:To make automatic balancing of an eccentric rotation device possible, by connecting a revolution spindle and a ring-shaped balancing weight by a support arm and connecting a revolution housing, the revolution spindle and the balance weight by a ring mechanism. CONSTITUTION:A balancing weight 71 is formed to a thick short cylindrical shape and it surrounds flexibly a revolution spindle 2 and it is connected to a support arm 73 projecting from the revolution spindle 2 through a shaft 74. A housing 3, the revolution spindle 2 and the balancing weight 71 are connected through a ring mechanism 72. The ring mechanism 73 comprises a first connection rod 77 having one end connected to a support projection 75 of a housing 73, a connecting rod 80 having an intermediate portion supported by the revolution spindle 2 and one end connected to the other end of the first connecting rod 77, and a second connecting rod 83 having one end connected to the other end of the sliding rod 80 and the other end connected to the balancing weight 71. |
