EP0115417A2
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EP
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Hydraulically damped mounting device
Assignee: Avon Industrial Polymers Melksham Ltd
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Filing: 1984-01-24
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Granted: —
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Expires: 2004-01-24
Abstract
Abstract A hydraulically damped mounting device has two anchor points (2,3) joined by a resilient spring (9). The resilient spring (9) and a partition (6) define a working chamber (13) for liquid, the working chamber being in communication with a compensation chamber (14) via a passage (15). The compensation chamber (14) is bounded by flexible bellows (5). A flexible diaphragm (16) defines, together with the partition (6), a gas pocket (18). Relative movement of the anchor points (2,3) causes a change in pressure in the working chamber (13). High frequency vibrations are absorbed by movement of the diaphragm (16) with little resistance to movement. Low frequency vibrations cause liquid movement through the passage (15) with a strong damping effect. This affect may be controlled by suitable selection of the length and diameter of the passage (15). Preferably, a bleed orifice (38) extends from the gas pocket (18) to compensate for thermal changes in the volume of the pocket (18).
Inventors
- 👤 John Philip West
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-01 12:31
CPC Classifications
F; F16; F16F; F16F13/00; F16F13/04; F16F13/26; F16F13/06; F16F13/08; F16F13/10; F16F13/20
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
143 words
A hydraulically damped mounting device having two anchor points (3,2) connected by a first deformable wall (9); a working chamber (13) enclosed between the first deformable wall (9) and a partition (6) rigidly associated with a first one (3) of the anchor points, the working chamber (13) containing liquid; a compensation chamber (14) for the-liquid, the compensation chamber (14) being at least partially bounded by a second deformable wall (5), a part of which is freely movable in dependence upon liquid pressure.changes in the compensation chamber (14); and a passage (15) between the chambers (13,14) to allow fluid communication of the liquid between them; characterised in that: the partition is rigid, and there is a flexible diaphragm (16) in direct contact with the liquid in the working chamber (13), the flexible diaphragm (16) acting as a barrier between the liquid and a gas.
Claim 2
Dependent Claim
143 words
A hydraulically damped mounting device having two anchor points (3,2) connected by a first deformable wall (9); a working chamber (13) enclosed between the first deformable wall (9) and a partition (6) rigidly associated with a first one (3) of the anchor points, the working chamber (13) containing liquid; a compensation chamber (14) for the-liquid, the compensation chamber (14) being at least partially bounded by a second deformable wall (5), a part of which is freely movable in dependence upon liquid pressure.changes in the compensation chamber (14); and a passage (15) between the chambers (13,14) to allow fluid communication of the liquid between them; characterised in that: the partition is rigid, and there is a flexible diaphragm (16) in direct contact with the liquid in the working chamber (13), the flexible diaphragm (16) acting as a barrier between the liquid and a gas.
Claim 3
Dependent Claim
19 words
A hydraulically damped mounting device according to Claim 1, wherein the gas is constrained in a closed pocket (18).
Claim 4
Dependent Claim
23 words
A hydraulically damped mounting device according to Claim 1, wherein the gas is constrained in a pocket (18) having a bleed orifice (38).
Claim 5
Dependent Claim
19 words
A hydraulically damped mounting device according to Claim 3, wherein the bleed orifice (38) leads to the ambient atmosphere.
Claim 6
Dependent Claim
23 words
A hydraulically damped mounting device according to Claim 3 or Claim 4, wherein the effective aperture of the bleed orifice (38) is adjustable.
Claim 7
Dependent Claim
31 words
A hydraulically damped mounting device according to Claim 3, wherein the bleed orifice (38) leads to a gas reservoir chamber affected by the pressure of liquid in the compensation chamber (14).
Claim 8
Dependent Claim
28 words
A hydraulically damped mounting device according to any one of Claims 2 to 6, wherein the volume of the pocket (18) is variable independently of the liquid pressure.
Claim 9
Dependent Claim
33 words
A hydraulically damped mounting device according to any one of the preceding Claims, wherein the first deformable wall (9) includes an elastomeric spring and the second deformable wall (5) includes a flexible bellows.
Claim 10
Dependent Claim
32 words
A hydraulically damped mounting device according to any one of Claims 1 to 7, wherein the first deformable wall includes a flexible bellows and the second deformable wall includes an elastomeric spring.
Claim 11
Dependent Claim
21 words
A hydraulically damped mounting device according to any one of the preceding Claims, wherein the diaphragm is supported on the partition.
Claim 12
Dependent Claim
24 words
A hydraulically damped mounting device according to any one of Claims 1 to 9, wherein the diaphragm is supported on the first deformable wall.
Claim 13
Independent Claim
111 words
A method of isolating first (3) and second (2) anchor points from the vibration of one of them, consisting in absorbing vibrations by acting on a'liquid in a working chamber (13), defined by a first deformable wall (9) connecting the anchor points (3 and 2) and one side of a partition (6) rigidily associated with the first anchor point (3), to cause displacement of liquid in the working chamber (13) via a passage (15) to or from a compensation chamber (14) bounded by a second deformable wall (5); characterised in: absorbing higher frequency vibrations by acting on a substantially or entirely closed pocket (18) of gas by means of the liquid.
Claim 14
Independent Claim
111 words
A method of isolating first (3) and second (2) anchor points from the vibration of one of them, consisting in absorbing vibrations by acting on a'liquid in a working chamber (13), defined by a first deformable wall (9) connecting the anchor points (3 and 2) and one side of a partition (6) rigidily associated with the first anchor point (3), to cause displacement of liquid in the working chamber (13) via a passage (15) to or from a compensation chamber (14) bounded by a second deformable wall (5); characterised in: absorbing higher frequency vibrations by acting on a substantially or entirely closed pocket (18) of gas by means of the liquid.
References Cited (Backward Citations)
No citation records indexed.
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