Electric motor assembly and a brake actuator incorporating said electric motor assembly

US5949168A · kind A · utility

Assignee

• Continental AG · DE

Inventors

• Thomas Dieckmann · Pattensen, DE
• Wulf Leitermann
• Immanuel Henken · Laatzen, DE

Key dates

• Filing date: Mar 19, 1998
• Grant date: Sep 7, 1999
• Expiry date: Mar 19, 2018

Classification

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

Abstract

The invention relates to an electric motor having a locking device and a brake actuator for an electric system which includes such an electric motor. The locking brake has a simple configuration and includes a conical ring which is mounted so as to be axially displaceable on the motor shaft of the electric motor of the brake actuator. In a first axial position, the conical ring (26) permits a rotation of the motor shaft (12) in both directions and, in a second axial position, the conical ring is in engagement with the motor shaft (12) and rotates with the latter. In the second axial position of the conical ring (26), a rotation of the motor shaft (12) in one rotational direction leads to the situation that the conical ring (26) is in engagement with the lock ring (24) of the brake actuator (2). The lock ring (24) is fixed so that it cannot rotate relative to the motor shaft (12). In contrast, a rotation of the motor shaft (12) in the other rotational direction leads to the situation that the contact engagement between the motor shaft (12) and the conical ring (26) and between the lock ring (24) and the conical ring (26) is released.