Compact Clutch Release Device: Space-Saving and Simplified Assembly
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Summary
Problems
Concentric slave cylinders require significant axial installation space, which is limited in modern compact cars, and the assembly of cover-fixed releasers is complex and expensive due to the need for a cover bearing connection.
Innovation solutions
A release device with a housing forming a concentric annular pressure chamber and an axially movable annular piston, where the release bearing can partially or completely enter the cover bearing, reducing axial installation space and simplifying assembly by using a cover bearing with an inner diameter larger than the release bearing, and optionally integrating the fastening flange with the inner ring of the release bearing.
TRIZ Analysis
Specific contradictions:
General conflict description:
Principle concept:
If a cover-fixed releaser with concentric slave cylinder is used, then the clutch can be reliably actuated, but the axial installation space requirement increases
Why choose this principle:
The release bearing is designed to be nested within the cover bearing, with the inner ring of the cover bearing having a larger inner diameter than the outer diameter of the release bearing. This allows the release bearing to completely or partially enter the cover bearing during actuation, reducing the overall axial space requirement while maintaining functional reliability
Principle concept:
If a cover-fixed releaser with concentric slave cylinder is used, then the clutch can be reliably actuated, but the assembly complexity and cost increase
Why choose this principle:
The cover bearing is designed to serve dual functions: supporting the housing axially and radially while simultaneously accommodating the release bearing within its inner ring. This merging of functions eliminates the need for separate mounting structures and complex connection solutions for the pressure line, simplifying assembly and reducing cost
Application Domain
Data Source
AI summary:
A release device with a housing forming a concentric annular pressure chamber and an axially movable annular piston, where the release bearing can partially or completely enter the cover bearing, reducing axial installation space and simplifying assembly by using a cover bearing with an inner diameter larger than the release bearing, and optionally integrating the fastening flange with the inner ring of the release bearing.
Abstract
The invention relates to a device for disengaging a clutch, in particular a clutch in the drive train of a motor vehicle, comprising a housing that is arranged concentrically about an axis and forms a pressure chamber in which an axially movable annular piston is arranged and a disengagement bearing that is designed for abutment on a disc spring of the clutch and is fastened to the annular piston, the housing being supported via a cover bearing on a cover of the clutch, wherein the cover bearing has a stationary inner ring, a rotating outer ring, and rolling elements arranged therebetween. The invention is characterised in that the disengagement bearing is arranged substantially within the inner ring of the cover bearing at least during part of an actuating stroke of the annular piston.