Patent ID: 8998189
Filing Date: 2015-04-07
Classification: B62D,F16C,F16F,H02K

Abstract:
1. A wave washer, comprising: an annular portion having a first protrusion that protrudes toward one side only in an axial direction of the wave washer, and a second protrusion that is formed so as to be continuous with the first protrusion and that protrudes toward the other side only in an axial direction; and a plurality of outward protrusions that protrude outward from an outer periphery of the annular portion in a radial direction of the annular portion, wherein the annular portion has inner periphery concave portions that are formed at portions radially inward of portions at which the outward protrusions are formed; the inner periphery concave portions have recessed portions in a plane perpendicular to the axial direction away from a center of the annular portion radially outwardly toward the outward protrusions; a maximum radially recessed amount of each of the inner periphery concave portions is equal to a maximum radially protruded amount of each of the outward protrusions.