Electric-motor-drivable pressure generator for a hydraulic brake system for a vehicle
US5085490A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 23, 1990 |
| Grant date | Feb 4, 1992 |
| Priority date | — |
| Expiry date | Jul 23, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T8/489
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A slip control system for a hydraulic brake system of a vehicle, which comprises a pressure generator having a plunger piston, which plunges into a cylinder filled with brake fluid and is connected to a rack. For the forward drive of the plunger piston, an electric drive motor is provided, which via a gear drive drives a pinion meshing with the rack. For the return drive of the plunger piston, a spiral spring is used that engages on one end with pinion shaft and on the other is supported on the pressure generator housing. The use of the spiral spring makes a short axial structural length of the pressure generator attainable. A grip roller free-wheel clutch is also provided in the drive train between the motor and the rack. The grip roller free-wheel clutch effects an uncoupling of the gear drive and the drive motor when the rack, at the end of the return stroke, strikes a stop of the pressure generator housing. This prevents damage to the gear drive and motor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.