NON-LINEAR SPRING AND VIBRATION ISOLATOR

摘要

PROBLEM TO BE SOLVED: To attain low cost of a vibration isolator.SOLUTION: This invention provides a non-linear spring 1 comprising regular polygon annular shape parts 11 having several first rod-like members 14 connected by connector portions 15 and arranged in plural forms while being spaced apart in a direction of an axis line AX1; several second rod-like members 12 rotatably attached to each of the connector portions so as to connect adjoining annular shape parts and spaced apart in a circumferential direction; and several third rod-like members 13 rotatably attached to each of the connector portions so as to connect the connector portions positioned at rectangular diagonal portions defined by the two first rod-like members adjacent in an axial direction and the two second rod-like members adjacent in a circumferential direction. The second and third rod-like members comprise a non-linear spring part 10 inclined in the circumferential same direction of the annular shape part in respect to the axial direction and a linear spring part 20 biasing the annular shape parts adjacent in the axial direction toward the axial direction.