Drive for an electrically actuatable vehicle brake
US6059076A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 28, 1997 |
| Grant date | May 9, 2000 |
| Priority date | — |
| Expiry date | Aug 28, 2017 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D2125/405
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
To form the drive for an electrically-actuatable vehicle brake whose frictional elements can be pressed against a brake disk (38) with the aid of an electric motor (4), the electric motor (4) is connected, by way of a spindle gear that acts, with axial guidance and protection against relative rotation, in the direction of displacement of the frictional elements, to a brake piston (24), which is seated to be axially displaceable and acts on the frictional elements. A pitch-true, planetary-roller threaded (SPWG) spindle (12) known per se is used as the spindle gear, the spindle comprising a spindle shaft (16), a spindle nut (14) encompassing this shaft, and a plurality of barrel or roller bodies (28) disposed between the two, the bodies being provided with grooved profiles (29) that fit the spindle shaft (16). The barrel or roller bodies (28) are seated by a plurality of guide rings (30) or a guide body (30') and bearings (18, 20) disposed between them. The barrel or roller bodies (28) are disposed with fixedly-predetermined spacing relative to the spindle nut (14) and one another.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.