Patent ID: 9212714
Filing Date: 2015-12-15
Classification: F16F

Abstract:
1. A fiber reinforced plastic spring comprising: a positive direction orientating unit having at least one positive direction orientating layer and a negative direction orientating unit having at least one negative direction orientating layer, wherein the plate spring has a layered structure in which the positive direction orientating unit and the negative direction orientating unit are alternately layered such that (i) a longitudinal direction of the positive orientating unit coincides with a longitudinal direction of the negative orientating unit, and (ii) the positive orientating unit and the negative orientating unit are in close contact with each other without clearance over an entire longitudinal length of the positive orientating unit and the negative orientating unit, fiber is orientated at an orientating angle of positive direction against the longitudinal direction in the positive direction orientating layer, fiber is orientated at an orientating angle of negative direction against the longitudinal direction in the negative direction orientating layer, and an absolute value of the orientating angle of the positive direction orientating layer and an absolute value of the orientating angle of the negative direction orientating layer are set to between 20 and 30 degrees.