Air spring strut

US6685173B2 · kind B2 · utility

Assignee

• Continental AG · DE

Inventors

• Holger Oldenettel · Garbsen, DE
• Ansgar Berling · Seelze, DE

Key dates

• Filing date: Nov 30, 2001
• Grant date: Feb 3, 2004
• Expiry date: Mar 1, 2022

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B60G2206/424
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

An air spring strut (4) is arranged between a vehicle axle (8) and a vehicle body (6) of a motor vehicle. The air spring strut (4) includes a shock absorber (10) and an air spring (16). The shock absorber (10) includes a cylinder (12) and a piston displaceable into the cylinder (12). The foot point (14) of the cylinder (12) can be articulately connected to a wheel-guiding component (8) and the upper end of the piston can be pivotally connected to the vehicle body (6) of a motor vehicle. The air spring (16) includes a resilient member (18) which is clamped between a cover (20) and a roll-off piston (22) while forming a rolling lobe. The cover (20) can be attached to the vehicle body (6) of a motor vehicle and the roll-off piston (22) is supported on the cylinder (12) of the shock absorber (10). The resilient member (18) of the air spring (16) is enclosed by a bell (28). The bell (28) has an approximately circular-round cross-sectional area at each cross-sectional plane and the center points of the cross-sectional areas are arranged on a curve which approximately describes a circular path segment over the largest part of a spring path of the air spring.