Rolling-lobe air spring

US7226044B2 · kind B2 · utility

Assignee

• ContiTech Luftfedersysteme GmbH · DE

Inventors

• Bernd Stöter · Laatzen, DE
• Sven Klement · Hannover, DE

Key dates

• Filing date: Apr 16, 2003
• Grant date: Jun 5, 2007
• Expiry date: Apr 27, 2024

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16F9/0454
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

An air spring includes a flexible member, a roll-off piston and a cover plate. The piston includes a slot at its upper end for receiving the end of the flexible member applied with the aid of a clamp ring. The piston includes a flange for deflecting the flexible member. The outer diameter of the flange corresponds approximately to the outer diameter of the clamp ring and the roll-off diameter of the piston. The flexible member is tapered at its lower region to avoid an uncontrollable collapse in the pressureless state of the air spring or a sharp snap-in of the flexible member exiting from the attachment. The flexible member exits at approximately 90° in the radial direction from the attachment. The peripheral slot and the flange are so configured that, in the pressureless state, a clear diameter jump is present between clamping diameter and diameter of the remainder of the flexible member.