Spreader unit for a drum brake, comprising wear travel adjustment, and the drum brake

US11300170B2 · kind B2 · utility

Assignee

• Continental Teves AG & Co. OHG · DE

Inventors

• Uwe Bach · Niedernhausen, DE
• Martin Gädke · Hofheim, DE
• Holger von Hayn · Bad Vilbel, DE
• Ahmed Sefo · Frankfurt, DE
• Jens Hoffmann · Darmstadt, DE
• Adrian Messner · Darmstadt, DE
• Wolfgang Ritter · Düsseldorf, DE

Key dates

• Filing date: Oct 8, 2018
• Grant date: Apr 12, 2022
• Expiry date: Dec 20, 2038

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16D2125/36
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

An improved electromechanically drivable spreader unit having an integrated adjustment apparatus for a drum brake, in which the linear motion of brake shoe holders is produced by two ball-ramp devices, wherein a first ball-ramp device includes a first actuation piston arranged for rotation about the axis and a second ball-ramp device includes a second actuation piston arranged for rotation about the axis, and wherein an adjustment apparatus for compensating an actuation travel that increases as a result of wear on the friction linings is arranged in an axially centered position within the housing and substantially between the actuation pistons.