Sleeve rubber spring for mounts in a motor vehicle
AssigneeLemforder Metallwaren AG
InventorsRudiger Sprang, Andreas Vossel, Frank Meyering
Life of this patent
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Abstract
A sleeve rubber spring for mounts in a motor vehicle, in which a rubber body is arranged between an inner tube and an outer tube and has at least two chambers, which are filled with a fluid damping agent and are connected to one another through at least one overflow channel. A shutoff structure is provided including an axially extending seal, which opens only in the case of a predetermined pressure difference in the chambers. This seal of the shutoff structure of the overflow channel includes at least two sealing lips, which are separated from one another, have a hook-type profile in their cross section with a radial undercut and are deformable radially to the central axis of the sleeve rubber spring.
Claims15
A sleeve rubber spring for mounts in a motor vehicle, comprising:
- an inner tube;
- an outer tube;
- a rubber body arranged between said inner tube and said outer tube, said rubber body cooperating with said outer tube to define at least two chambers, each of said chambers being filled with a fluid damping agent, said rubber body and said outer tube cooperating to define an overflow channel;
- shutoff means including an axially extending seal for opening only in a case of a predetermined pressure difference between said two chambers, said seal being formed of at least two rubber sealing lips which are separated from one another and are integrally formed with said rubber body, each of said sealing lips having a radial undercut and having a hook-type profile in cross section, each of said sealing lips being deformable radially toward a central axis of the sleeve rubber spring.
A sleeve rubber spring comprising:
- an inner tube;
- an outer tube;
- an integral rubber body arranged between said inner tube and said outer tube, said rubber body cooperating with said outer tube to define two chambers, each of said chambers being filled with a fluid damping agent, said rubber body and said outer tube cooperating to define an overflow channel;
- shutoff means positioned in said overflow channel for opening and closing communication between said two chambers when a predetermined pressure difference exists between said two chambers, said seal being formed of two sealing lips formed of rubber and integral with said rubber body, said sealing lips are separated from one another and have a hook-type profile in cross section, each of said sealing lips being formed by a radial undercut in said rubber body, each of said sealing lips being deformable radially toward a central axis of the sleeve rubber spring.
Dependencies are inferred from the claim text.