Actuating device with automatic readjustment for a vehicle brake
US5060765A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 8, 1990 |
| Grant date | Oct 29, 1991 |
| Priority date | — |
| Expiry date | Aug 8, 2010 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D2125/36
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A one-piece casing (20) comprising a bottom (22) and a shell (24) formed with a cylindrical bore (26) houses a piston (30) for hydraulic actuation of a brake. For mechanical parking brake actuation, a shaft (34) is supported in the bottom (22) of the casing and a ramp arrangement (50) is rotatable by the shaft, thereby being displaceable axially away from a ramp arrangement (40) which is secured to the casing. Two strut members (60,64) which are screwed together constitute an adjustable strut between the axially adjustable ramp arrangement (50) and the piston (30). A return spring (90) is positioned under axial bias between a thrust bearing (92) secured to the casing and a thrust bearing (58) at one of the two strut members (60). The thrust bearing (92) which is secured to the casing is formed at an insert (84) by which one of the strut members (60) is guided non-rotatably. The ramp arrangement (40) which is secured to the casing as well as the insert (84) are retained against axial displacement in the casing (20) by a common fastening member (96) and are prevented from rotating by a common twist preventing element (42).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.