| 摘要 |
PROBLEM TO BE SOLVED: To provide an axle spring further improved in wider suspension characteristics such as various requests for non-linear characteristic and requests for linear characteristic, without causing increase of kinds of products and complication of product management.SOLUTION: An axle spring includes a main shaft 1, an outer cylinder 2 disposed in a state of externally surrounding the main shaft 1 when observed from a direction of a shaft center P of the main shaft 1, and an elastic portion 3 placed between the main shaft 1 and the outer cylinder 2 while alternately stacking an intermediate hard cylinder 5 and an elastic layer 4 in inner and outer radial direction to the shaft center P. In mounting a stopper mechanism S kept into contact with the intermediate hard cylinder 5 on the main shaft 1 or the outer cylinder 2 in accompany with movement of the main shaft 1 and the outer cylinder 2 in the shaft center P direction relatively to be closed by a prescribed amount, a mounting state of mounting and fixing the stopper mechanism S to the main shaft 1 or the outer cylinder 2 and a non-mounting state of not mounting the stopper mechanism S to the main shaft 1 or the outer cylinder 2 are selectable.SELECTED DRAWING: Figure 1 |
