Patent ID: 6318708
Filing Date: 2001-11-20
Classification: F16F

Abstract:
A hydraulically damping sleeve bearing, comprising:an outer sleeve;an intermediate cage surrounded by said outer sleeve;an inner connecting block surrounded by said intermediate cage, said inner block and intermediate cage being embedded in an elastomer spring body;said spring body being shaped to form, together with an inner wall of said outer sleeve, at least two working chambers communicating with each other via at least one damping throttle duct and at least one bypass duct, said throttle and bypass ducts having different dynamic characteristics and being tuned to different frequency and amplitude ranges;said working chambers, and said throttle and bypass ducts being filled with a damping fluid sealed off in a fluid-tight manner;said bypass duct including a decoupling member for decoupling said damping fluid between said working chambers in response to low amplitude vibrations, and a pressure relief valve for opening said bypass duct in response to high amplitude vibrations and pressure fronts occurring in said damping fluid, wherein said decoupling member and pressure relief valve are integrated into a single functional unit formed as a loose piece without any positive connection.