| 摘要 |
PROBLEM TO BE SOLVED: To reduce displacement of a rotation shaft due to energization force of a balancer mechanism.SOLUTION: A balancer mechanism is a balancer mechanism for cancelling a rotation moment acting to a rotation shaft having a shaft center extending in a first direction and comprises: a first member which is disposed so as to be eccentric to the rotation shaft and fixed to the rotation shaft; a second member engaged to the first member and reciprocating in a second direction orthogonal to the first direction according to rotation of the rotation shaft; and a third member which is supported rotatably on the rotation shaft coaxially, is disposed on an opposite side of the rotation shaft with respect to the second member, and fixes the first member; and an energization member for energizing the second member to the second direction.SELECTED DRAWING: Figure 3 |
