JPS61129946U - - Google Patents

Description

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing an engine mount according to an embodiment of the present invention, and FIG. 2 is an exploded perspective view showing an example of a specific partitioning means in the engine mount. FIG. 3 is a sectional view showing another embodiment of the present invention, and FIG. 4 is a partial sectional view showing a main part of still another embodiment. 2: Support metal fittings, 6: Rubber block, 8, 56,
58: Holding metal fitting, 14: Partition means, 16: Pressure receiving chamber, 18: Diaphragm, 20: Equilibrium chamber, 24:
First partition plate, 26: Second partition plate, 28:
Intermediate plate, 30, 74: Blank space, 32, 76: Movable plate, 38: First circumferential groove, 40: Second circumferential groove, 42:
First fluid passageway, 44: Second fluid passageway, 46.
50: Communication hole, 48: Through hole, 52, 54, 82
, 84: Working hole, 66: Rubber elastic member, 70, 7
2: Communication notch.

Claims (1)

[Claims for Utility Model Registration] (1) A rubber elastic body is provided on one side of the partition means, and a pressure receiving chamber is defined within the rubber elastic body, and
An equilibrium chamber is formed by an enclosure at least partially made of a rubber elastic member on the other side of the partition means, and a predetermined incompressible fluid is sealed in the pressure receiving chamber and the equilibrium chamber, while the pressure receiving chamber and the communicating with the equilibrium chamber via an orifice, and the partitioning means further includes:
In the fluid-filled vibration isolation support having a structure in which a movable plate that can be moved a predetermined distance is provided in response to pressure fluctuations in the pressure receiving chamber, the partition means is arranged such that a first partition plate and a second partition plate are sandwiched between an intermediate plate. a first circumferential groove and a second circumferential groove extending in the circumferential direction, respectively, are formed on the mutually opposing inner surfaces of the first and second partition plates; covering both the first and second circumferential grooves on both sides of the intermediate plate to form a first fluid passage and a second fluid passage extending in the circumferential direction;
Further, the first fluid passage and the second fluid passage are communicated with each other through a through hole formed in the intermediate plate, and the first fluid passage is connected to the pressure receiving chamber and the second fluid passage is connected to the pressure receiving chamber. A fluid-filled vibration isolating support body, characterized in that the fluid passages are communicated with the equilibrium chamber, so that the orifice is mainly formed by the first and second fluid passages. (2) The first fluid passage and the second fluid passage do not completely go around the first partition plate and the second partition plate in the circumferential direction; each has a discontinuous portion, one end of the discontinuous portion of the first fluid passage is communicated with the pressure receiving chamber via a communication hole formed in the first partition plate, The other end of the discontinuous portion of the first fluid passage is communicated with one end of the discontinuous portion of the second fluid passage through a through hole formed in the intermediate plate, and The anti-vibration support according to claim 1, wherein the other end of the discontinuous portion of the fluid passage is communicated with the equilibrium chamber through a communication hole formed in the second partition plate. body. (3) The movable plate is housed in a space formed between the first partition plate and the second partition plate so as to be movable a predetermined distance, and the space is connected to the pressure receiving chamber and the equilibrium chamber. The vibration damping support according to claim 1 or 2, which is communicated with each other so that the fluid pressure of the pressure receiving chamber and the equilibrium chamber can be applied to the movable plate in the cavity. body. (4) The intermediate plate is an annular plate member that covers the first and second circumferential grooves, and on the inside of the intermediate plate, the mating portion of the first partition plate and the second partition plate has the A utility model according to any one of claims 1 to 3, wherein a space for accommodating a movable plate is formed, and the movable plate is accommodated in the space in a floating state in the plate thickness direction. Anti-vibration support. (5) The intermediate plate is an annular plate member that covers the first and second circumferential grooves, and the above-mentioned plate is attached to the joint portion of the first partition plate and the second partition plate on the inner side of the intermediate plate. A space for accommodating the movable plate is formed, and the movable plate is made of a rubber elastic body, and the outer peripheral edge of the movable plate is sandwiched between the first and second partition plates. The movable plate according to any one of claims 1 to 3, wherein the movable plate is held by the movable plate, and is capable of elastically displacing mainly the central portion of the movable plate in the thickness direction by its own elastic action. Anti-vibration support.