Electric brake including a pad clearance adjusting mechanism and a method for adjusting the pad clearance of the same
US5957246A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 24, 1997 |
| Grant date | Sep 28, 1999 |
| Priority date | — |
| Expiry date | Dec 24, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T7/12
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
The electric brake including a pad clearance adjusting mechanism comprises: ignition switch detecting member for detecting that an ignition key has been switched from its off position to its on position; brake instruction detecting member; a parking brake detecting member; a brake control device; a piston position sensor; and, an electric actuator. In the brake control device, if the ignition switch detecting member detects that the ignition key has been switched from its off position to its on position, then actuates the electric actuator to thereby cause the present electric brake to generate a slight brake torque, the current position of a piston is set as the initial position of the piston, a position to which the piston is moved back from the initial position by an amount corresponding to a previously set pad clearance is set as the adjusted position of the piston, after then, if a brake instruction is issued by operating a brake pedal, then the electric brake can be operated and, if the brake instruction is retracted, then the electric actuator can be driven to thereby move the piston back to the piston adjusted position, thereby being able to obtain a constant pad clearance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.