Fluid mount including a partitionless compensator

F - Mech Eng,Light,Heat,Weapons – 16 – F

Patent

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Details

F16F 13/24 (2006.01) F16F 1/38 (2006.01) F16F 9/06 (2006.01) F16F 13/18 (2006.01) F16F 9/40 (2006.01)

Patent

CA 2299454

A fluid mounting (20) for isolating or damping vibration between a vibrating member (21) and a structure (23). In one aspect, the fluid mounting (20) includes inner (22) and outer (24) members, a flexible element (26), first (28) and second (30) operating chambers, a fluid passageway (32) interconnecting operating chambers (28, 30), and a partitionless volume compensator (36) including a compensator chamber (38) separated into a gas- filled portion (40) and a fluid-filled portion (42). Notably, the chamber (38) is devoid of any separating barrier. At least one lock passage (44) interconnects the fluid-filled portion (42) with one of the first and second operating chambers (28, 30), and a working fluid (34). Preferably a bubble trap (46) focuses the bubbles into the lock passage (44). In another aspect, mounting (20) may include laminated shim construction and sloping profiles thereon prevent bubble trapping.

La présente invention concerne un support hydraulique (20) permettant d'isoler ou d'amortir les vibrations entre un élément vibrant (21) et une structure (23). Dans un premier aspect, le support hydraulique (20) comprend des éléments interne (22) et externe (24), un élément flexible (26), une première (28) et une seconde (30) chambre de fonctionnement, un passage de fluide hydraulique (32) interconnectant les chambres de fonctionnement (28, 30), un compensateur volumique sans parois (36) comprenant une chambre de compensateur (38) divisée en une partie à gaz (40) et une partie hydraulique (42). Par ailleurs, la chambre (38) est dépourvue de barrières séparatrices. Au moins un passage de verrouillage (44) interconnecte la partie hydraulique (42) avec une des première et seconde chambres de fonctionnement (28, 30), et un fluide caloporteur (34). De préférence, un piège à bulles (46) fait converger les bulles vers l'intérieur du passage de verrouillage (44). Dans un autre aspect, le support (20) peut comprendre une cale stratifiée et des profils inclinés permettant d'empêcher le piégeage des bulles.

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