Spot-type disc brake and brake shoe

US5257679A · kind A · utility

Assignee

• Alfred Teves GmbH · DE

Inventors

• Rolf Weiler · Eppstein, DE
• Uwe Bach · Niedernhausen, DE
• C. Peter Panek · Steinbach, DE

Key dates

• Filing date: Jul 8, 1992
• Grant date: Nov 2, 1993
• Expiry date: Jul 8, 2012

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16D2055/007
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A spot-type disc brake in which a two part brake housing forms a central radial cavity open at the outside which allows the brake shoes to be removed through the cavity without disassembly of the housing. The brake shoes are engaged by surfaces on short height projection pairs protruding into the cavity from either side, the surfaces machined with a radiused shape concentric with the actuator cylinder bores to facilitate manufacture. The short height allows the radiused shape without preventing removal of the brake shoes. In a first embodiment, the projections are also formed with outer tangential surfaces, with surfaces on the brake shoes urged thereagainst with a retained spring. In a second embodiment, a holding pin extends across the central cavity and through bores at the outside of each brake shoe, a retainer spring engaged with the holding pin and brake shoes.