Motor-driven disk brake
US6959791B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 26, 2003 |
| Grant date | Nov 1, 2005 |
| Priority date | — |
| Expiry date | Nov 26, 2023 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D2127/02
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A motor-driven disk brake having a caliper containing a piston for pressing a brake pad, a rotary actuator and a rotary-to-rectilinear motion converting mechanism for transmitting rotation of the rotary actuator to the piston after converting it into rectilinear motion. The piston is driven in response to rotation of the rotary actuator to press the brake pad against a disk rotor, thereby generating braking force. A brake releasing mechanism for returning the rotary-to-rectilinear motion converting mechanism to its initial position in the event of a failure in the rotary actuator is interposed between a rotating member and a rectilinearly moving member that constitute the rotary-to-rectilinear motion converting mechanism. The brake releasing mechanism has an urging device for generating a torque in the direction for returning the piston in response to the rotation of the rotating member in the direction for advancing the piston. The urging device generates a torque greater than the rotational resistance of the rotating member of the rotary-to-rectilinear motion converting mechanism.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.