| 摘要 |
The stand has a spring arm (1) on which a device can be mounted with a parallelogram guide (3,5) with two parallel legs and two parallel connecting elements joining the ends of the legs and an energy storage device mounted on the guide at two joint points so as to compensate a load acting on the guide so that a device can be moved up and down with the same force over approximately the entire range of movement. At least one of the joint points can be displaced relative to the guide so that both the bias and the force action direction of the energy storage device change. |
