Vibration absorbing mountings
AssigneeDunlop Limited
InventorsMichael Clark, Kenneth J. Taylor
Life of this patent
Estimating the term…
Abstract
A vibration absorbing mounting, e.g. a motor car engine mounting, has a rubber spring member mounted between end members and hydraulically damped. The interior of the mounting comprises two liquid-filled chambers communicating with one another through a restricted passageway and which are separated by an intermediate diaphragm and bounded at their other sides, respectively, by the rubber spring member and a second diaphragm. The second diaphragm is provided with a central support and the intermediate diaphragm may have an unyielding central portion, to enable excessive movement of the end members towards one another to be resisted.
Claims11
A vibration absorbing mounting comprising a first end member and a second end member, a rubber spring member bonded respectively to each of the end members, a rubber intermediate diaphragm secured to the second end member and defining with the rubber spring member a first liquid-filled chamber, and an annular rubber second diaphragm member secured at its periphery to the second end member and to a central support provided on the second end member and defining a second liquid-filled chamber between the second diaphragm and the intermediate diaphragm, the intermediate diaphragm being bonded to a support ring fitted within the second end member, the outer periphery of said support ring being shaped so as to define an annular space between the ring and the inner surface of the second end member, said annular space communicating respectively with said first and second chambers in circumferentially spaced positions so as to provide a long restricted passageway through which fluid may flow from one chamber to the other to provide a damping action.
A vibration absorbing mounting comprising a first end member and a second end member, a rubber spring member bonded respectively to each of the end members, a rubber intermediate diaphragm secured to the second end member and defining with the rubber spring member a first liquid-filled chamber, and an annular rubber second diaphragm member secured at its periphery to the second end member and to a central support engaging the second end member and defining a second liquid-filled chamber between the second diaphragm and the intermediate diaphragm, a restricted passageway being provided between the two liquid-filled chambers;
- the intermediate diaphragm comprising an unyielding central portion and the central support of the second diaphragm being rigid so that the unyielding central portion of the intermediate diaphragm and the rigid central support of the second diaphram are positioned to abut when subjected to excessive compressive force to provide means for resisting excessive movement of the end members towards one another.
A vibration absorbing mounting comprising a first end member and a second end member, a rubber spring member bonded respectively to each of the end members, a rubber intermediate diaphragm secured to the second end member and defining with the rubber spring member a first liquid-filled chamber, and an annular rubber second diaphragm member secured at its periphery to the second end member and to a central support provided on the second end member and defining a second liquid-filled chamber between the second diaphragm and the intermediate diaphragm, a restricted passageway being provided between the two liquid-filled chambers, the rubber of the spring member continuing within the second end member to provide an inner rubber liner therefore and the intermediate diaphragm is bonded to a support ring which is in a sliding fit within the inner rubber liner of the second end member.
Dependencies are inferred from the claim text.