| 摘要 |
PROBLEM TO BE SOLVED: To provide a link device that can eliminate unstable operation at a dead point of a parallel link mechanism.SOLUTION: The link device 40 comprises: a parallel link mechanism 1 provided with a fixed link member 41, a driving link member 42, a driven link member 43, and a connecting link member 44; and a resistance force application mechanism 2 for applying, near the vicinity of the driving link member 42 and the driven link member 43 in the rotation direction thereof based on a dead point X where the four link members are aligned on the same line in a plan view, resistance force to the driven link member 43 in a direction opposite to the rotation direction of the driven link member 43. The resistance force application mechanism 2 is provided with: a roller 21 mounted on the driven link member 43 in a manner such that the roller can displace vertically; and a guiding member 22 having a projection part 221 projecting to the driven link member 43 side near the vicinity of the driven link member 43 in the rotation direction thereof based on the dead point X. |
