Suspension bushing

摘要

A suspension bushing includes an inner cylinder, an intermediate plate, an outer cylinder and an elastic member. An axis of the inner cylinder is arranged vertically and the inner cylinder is provided with an expanded portion in an axially central region. The expanded portion is enclosed by a curved surface section formed in an axially central region of the intermediate plate. An axially outward expanded end section is provided on either side of the curved surface section. An inside annular recess and an outside annular recess are provided on an axially outward end of the elastic member. When the twist is inputted, the outer cylinder and the intermediate plate are changed relative to the inner cylinder. However, due to the provision of the expanded end section, a twist angle is increased so that the intermediate plate is hard to interfere with an end portion of the inner cylinder.

主权项

1. A suspension bushing comprising:
an inner cylinder 22; an outer cylinder 24 surrounding an outer circumference of the inner cylinder 22 and being spaced apart from the inner cylinder 22; an intermediate plate 26 being arranged between and spaced apart from the inner cylinder 22 and the outer cylinder 24; an elastic member 28 elastically connecting the inner cylinder 22, the intermediate plate 26 and the outer cylinder so as to function as a vibration isolating core element, wherein the elastic member 28 has an inside section 50 provided between the inner cylinder 22 and the intermediate plate 26 and an outside section 52 provided between the intermediate plate 26 and the outer cylinder 24; wherein the inner cylinder 22 has an expanded portion 30 provided in an intermediate region thereof in an axial direction and projecting outward in a direction orthogonal to an axis of the inner cylinder 22, and end portions 34 of small diameter provided on both ends in the axial direction; and wherein the intermediate plate 26 has a curved surface section 40 which encloses the expanded portion 30, and an expanded end section 44 which surrounds the end portion 34 and which is inclined such that an outward portion in the axial direction is gradually spaced apart from the end portion 34.