Vibration damping device
AssigneeBridgestone Corporation
InventorsSatoru Kawamata, Isao Watanabe, Kiyoshi Ohno
Life of this patent
Estimating the term…
Abstract
A vibration damping device comprises two cylindrical and flexible membrane members liquid-tightly connected at its end portion to respective end portion of a piston member and at its other end portions to respective face plates, a connecting member connecting the face plates to each other to form a closed chamber, a liquid filled in the closed chamber, and fastening members arranged onto the piston member and face plate, respectively. Moreover, at least one restricted passage is formed in the piston member or the connecting member. When an electrorheological fluid is used as a liquid, electrodes are arranged on opposed walls of the restricted passage.
Claims16
A vibration damping device comprising;
- two cylindrical, rolling lobe type flexible membrane members, an end portion of each of said membrane members being liquid-tightly connected to a respective end portion of a piston member and the other end portions of said membrane members being liquid-tightly connected to respective face plates, a connecting member provided therein with plural restricted passages and connecting the face plates to each other to form a closed chamber at such a state that folded lobe portions of the membrane members face each other in an axial direction, an electrorheological fluid in the closed chamber, electrodes arranged onto opposed walls in each of the restricted passages, and fastening members arranged onto the piston member and face plates, respectively.
A vibration damping device comprising;
- two cylindrical, rolling lobe type flexible membrane members, an end portion of each of said membrane members being liquid-tightly connected to a respective end portion of a piston member provided therein with plural restricted passages and the other end portions of said membrane members being liquid-tightly connected to respective face plates to form a closed chamber such that folded lobe portions of the membrane members face each other in an axial direction, a connecting member connecting the face plates to each other inside the closed chamber, an electrorheological fluid in the closed chamber, electrodes arranged onto opposed walls in each of the restricted passages, and fastening members arranged onto the piston member and face plates, respectively.
A vibration damping device comprising;
- two cylindrical, rolling lobe type flexible membrane members, an end portion of each of said membrane members being liquid-tightly connected to a respective end portion of a piston member provided therein with plural restricted passages and the other end portions of said membrane members being liquid-tightly connected to respective face plates to form a closed chamber such that folded lobe portions of the membrane members face each other in an axial direction, a connecting member connecting the face plates to each other outside the closed chamber, an electrorheological fluid in the closed chamber, electrodes arranged onto opposed walls in each of the restricted passages, and fastening members arranged onto the piston member and face plates, respectively.
A vibration damping device comprising;
- two cylindrical, rolling lobe type flexible membrane members, an end portion of each of said membrane members being liquid-tightly connected to a respective end portion of a piston member and the other end portion of said membrane members being liquid-tightly connected to respective face plates, a connecting member provided therein with plural restricted passages and connecting the face plates to each other to form a closed chamber at such a state that folded lobe portions of the membrane members face each other in an axial direction and said connecting member being arranged so as to pass through the piston member, an electrorheological fluid filled in the closed chamber, an electrode arranged on an opposed wall to said restricted passages, and fastening members arranged onto the piston member and face plates, respectively.
Dependencies are inferred from the claim text.