Electric disc brake
US6491140B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 15, 2001 |
| Grant date | Dec 10, 2002 |
| Priority date | — |
| Expiry date | Mar 15, 2021 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D2127/007
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
In an electric disc brake a stator and a rotor of an electric motor are disposed in a caliper body, and a rotation of the rotor is converted into a linear movement by a ball-ramp mechanism. Such linear movement is transmitted to a piston, so that brake pads are urged against a disc rotor by the piston and a pawl member. Two external gears are provided on the rotor and internal gears are provided on two discs of the ball-ramp mechanism so that, due to engagement between the external gears and the internal gears, the two discs of the ball-ramp mechanism are rotated with a given rotational ratio with respect to the rotor to cause differential movement which in turn causes one of the discs to shift, thereby advancing the piston.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.