Spring device for a rail vehicle

US9440663B2 · kind B2 · utility

Assignee

• Bombardier Transportation GmbH · DE

Inventors

• Andreas Wolf · Munich, DE
• Michael Wusching · Wilthen, DE

Key dates

• Filing date: May 29, 2013
• Grant date: Sep 13, 2016
• Expiry date: May 29, 2033

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16F1/3876
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

The present invention relates to a spring device including a spring body substantially made of a polymeric material and defining an axial direction and a radial direction. The spring body, in the axial direction, has a central section located between a first end section terminating in a first outer end surface and a second end section terminating in a second outer end surface, the central section having at least one radially waisted section. The first end section has a recess extending, in the axial direction, from the first outer end surface towards the central section such that an axial spring body cavity is formed, the axial spring body cavity being confined by a compliant inner surface. An insert is inserted into the axial spring body cavity, the insert contacting the inner surface of the spring body to modify a rigidity of the spring device.