US 5,492,311 AGranted

Active positioning element

AssigneeFirma Carl Freudenberg

InventorsKlaus Kurr, Willi Schweikert, Armin Barth

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Abstract

An active positioning element for a rubber mount, including a space surrounded by a housing, a positioning member and a working member which is designed as a spring element arranged within the space. The positioning member and the working member are movable back and forth in the direction of oscillations introduced into the rubber mount, and the positioning member is sealed in the housing. The positioning member is formed by a gas pressure spring which can be acted on by gas under pressure, the gas pressure spring comprising at least one piston-cylinder unit which has a roller membrane for sealing the piston off from the housing. The spring element is formed by a compression spring which, in the direction of the oscillations introduced, rests under elastic initial stress, on one side against the positioning member and on another side against the support bearing of the rubber mount.

Claims11

Dependent claims

An active positioning element for a hydraulically-damped mount, said mount comprising an elastomeric spring and a support bearing, said active positioning element comprising:

a housing, said housing surrounding a space;
a working member, said working member being located within said space, said working member comprising a spring element, said spring element comprising a compression spring, said working member being movable within said space;
and
a positioning member, said positioning member being located within said space, one side of said compression spring contacting said positioning member and another side of said compression spring contacting said support bearing, said positioning member comprising a plurality of pistons, said positioning member further comprising a plurality of rolling diaphragms sealing said pistons to said housing, each of said pistons being acted on by a fluid pressure difference to move said pistons and said compression spring, said pistons arranged in parallel with the parallel connection of the pistons producing a comparatively large resultant piston surface in which the total force obtained is formed by the addition of the individual forces of the corresponding pistons.

1 more element

Dependencies are inferred from the claim text.