Electric parking brake actuator for actuation of a parking brake in a motor vehicle

US10407041B2 · kind B2 · utility

Assignee

• FTE automotive GmbH · DE

Inventors

• Wilhelm Heubner · Ebern, DE
• Sonja Lenke · Zeil am Main, DE
• Katrin Ebert · Ebern, DE

Key dates

• Filing date: Dec 5, 2017
• Grant date: Sep 10, 2019
• Expiry date: Dec 5, 2037

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16D2127/06
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

An electric parking brake actuator has a transmission mechanism, which is rotationally drivable by an electric motor and converts rotational movement into an axial movement of an actuating rod that carries an actuating element for the parking brake. The actuating rod normally moves by electric motor displacement via the transmission mechanism from an unblocking position to a blocking position and vice versa. A blocking mechanism serves the purpose of holding the actuating rod in the unblocking position of the actuating rod against the force of a spring element. A blocking disc, which is in drive connection with the transmission mechanism, has a stop surface for a locking device in only one rotational direction of the blocking disc. For secondary alternate operation the stop surface is releasable by the locking device so that the actuating rod is biased by the spring element to the blocking position without electric-motorized assistance.