Fluid-filled vibration-isolator
AssigneeTokai Rubber Industries, Ltd.
InventorKatsuhisa Yano
Life of this patent
Estimating the term…
Abstract
A fluid-filled vibration-isolator includes a main axis fitting, an outer cylinder-shaped fitting disposed at the outside of the main axis fitting, a rubber elastic member, a stopper fitting disposed at the circumferential surface of the main axis fitting, and a fluid contained in fluid chambers. The rubber elastic member has a pair of ring-shaped side walls, a pair of partition walls, and an orifice passage disposed in at least one of the partition walls. The rubber elastic member has a spacer filling a gap between the axial end surface of the stopper fitting and the ring-shaped side wall facing each other. The axial end surface of the stopper fitting is free from the fluid chamber not to face the fluid chamber.
Claims8
A hydraulic vibration-isolator, including:
- a main axis fitting having an outer circumferential surface, axially opposite ends, and an axially middle portion;
- an outer cylinder-shaped fitting disposed outside of said main axis fitting;
- a rubber elastic member having a pair of ring-shaped side walls connecting said main axis fitting integrally with said outer cylinder-shaped fitting at said axially opposite ends of said main axis fitting, a pair of partition walls extending axially, and an orifice passage disposed in at least one of the partition walls, said ring-shaped side walls constituting an inner room at said axially middle portion of said main axis fitting by encircling the main axis fitting with said ring-shaped side walls, said partition walls dividing said inner room into two fluid chambers in a circumferential direction;
- a stopper fitting disposed at said outer circumferential surface of said main axis fitting, projecting towards said fluid chambers, and having axial end surfaces;
- and
- a fluid contained in said fluid chambers;
- wherein the improvement comprises:
- said rubber elastic member having a spacer and filling a gap between each of said axial end surfaces of said stopper fitting and each of said ring-shaped side walls facing each other;
- and
- each of said fluid chambers being arranged entirely radially outward of the stopper fitting.
Dependencies are inferred from the claim text.