Vibration-damping mounting.

摘要

A fluid-filled vibration damping mounting (10) consists of generally cylindrical inner and outer members (12,14) elastically coupled together with their axes generally parallel by means of an elastomeric body (20). Fluid chambers (26A,26B) communicating via a restrictive passageway (32) are formed in the elastomeric body so that damping is achieved by fluid transfer through the passageway, and the mounting is assembled whilst immersed in such fluid so as to ensure that no air bubbles are trapped in the passageway or in the fluid chambers. A wall of one chamber (26B) is constituted by a diaphragm (16A) and this forms an air chamber (22B) within a part of the outer member (14). An opening (44) is provided in the outer member (14) for venting the air chamber (22B) and enabling working fluid to drain readily therefrom, and the opening (44) has a reinforcement (46) to prevent deformation of the mounting during installation and/or use.