| 摘要 |
PROBLEM TO BE SOLVED: To provide a vibrational carrying device capable of adjusting a spring coefficient between a frame and a plate. SOLUTION: A spring coefficient adjustment device is used for a vibrational driving device used at the time of driving a vibrational carrying device. The vibrational driving device includes an electromagnet 61 and an armature 63 related with an interval placed with a gap. A plate 24 is movable with respect to a frame 50 on the driving device. One of the electromagnet 61 and the armature 63 is connected to the frame 50, and the other is connected to the spring plate 24. A primary spring 59 is connected between the frame 50 and the spring plate 24. A plural number of auxiliary elastomer shearing springs 25 are selectively inserted between the frame 50 and the plate 24 to be selectively engaged with them to change an overall spring coefficient between the frame 50 and the plate 24. |
