Concentric slave cylinder for a hydraulic clutch actuator

US9671020B2 · kind B2 · utility

Assignee

• FTE automotive GmbH · DE

Inventors

• Stefan Gebert · Gestungshausen, DE
• Matthias Lehnert · Bamberg, DE
• Ruthard Braun · Stadtlauringen, DE
• Elmar Kuhn · Pfarrweisach, DE
• Ernst Möller · Bad Königshofen im Grabfeld, DE
• Jan Gnyp · Ebern, DE

Key dates

• Filing date: Dec 11, 2012
• Grant date: Jun 6, 2017
• Expiry date: Feb 25, 2034

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16D25/083
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A central release unit for a hydraulic clutch actuator has a plastic cylinder housing which is produced by injection molding and which has at least one cylinder wall provided, on an outer circumference, with a reinforcement sleeve. The reinforcement sleeve can be fastened to the cylinder wall after the injection molding of the cylinder housing, for which purpose a snap-action connection is provided on a forward end, which faces away from the pressure connection piece, of the reinforcement sleeve. The connection is formed by a radially inwardly bent detent portion of the reinforcement sleeve and by a rib integrally formed on the outer circumference of the cylinder wall. The reinforcement sleeve has a main portion which adjoins the detent portion and which is of conical shape complementary to an outer circumferential surface, which is of conical form in the reinforcement region, of the cylinder wall.