Self-boosting friction brake, device for measuring the coefficient of friction, and method for regulating a braking force

US7398866B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Dietmar Baumann · Hemmingen, DE
• Juergen Hilzinger · Leonberg, DE
• Dirk Hofmann · Regensburg, DE
• Herbert Vollert · Lambach, DE
• Andreas Henke · Marsberg, DE
• Frieder Keller · Ubstadt-Weiher, DE
• Hanniel Schmidt · Waldbronn, DE

Key dates

• Filing date: Jan 16, 2003
• Grant date: Jul 15, 2008
• Expiry date: Aug 22, 2024

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16D2127/10
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

The invention relates to an electromechanical, self-boosting friction brake, in particular a disk brake. The friction brake is embodied with a wedge element for exerting contact pressure on a friction brake lining; a wedge angle (α) is selected such that a brake parameter C* is located at or near a pole point. As a result, a high self-boosting that tends toward infinity and consequently a low actuating force are attained. To avoid blocking of the friction brake, an actuating device is embodied to block an independent motion of the wedge element, or has a regulating device for regulating a contact pressure of the friction brake lining against a brake body (brake disk).