Clutch Actuation System Guide Sleeve Retaining Nut
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Solution Overview
Problem
Existing actuation systems for coupling a motor vehicle engine drive shaft to a transmission input shaft are difficult to assemble and costly due to the need for support on the transmission housing, which complicates the assembly process.
Innovation Solution
An actuation system featuring a slave cylinder supported by a guide sleeve and a cover bearing on a clutch part, with a retaining nut providing axial support and force dissipation, allowing the actuation system to be mounted independently of the transmission housing, using a self-reinforcing screw connection and adhesive lock for stability and ease of assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the actuation system is screwed to the transmission housing for support, then the actuating forces can be supported stably, but the assembly of the clutch unit becomes more difficult and time-consuming
Solution Approach 1:
The actuation system is separated from the transmission housing support structure. The clutch unit with its actuation system becomes an independent module that is simply inserted into the transmission housing without requiring screw connections to the housing, thus improving assembly speed while maintaining stability through the internal retaining nut and cover bearing structure
Solution Approach 2:
The support function for the actuation system is extracted from the transmission housing and relocated to the clutch unit itself through the retaining nut and cover bearing arrangement. This allows the actuation system to be self-supported within the clutch assembly, eliminating the need for complex mounting to the transmission housing
2Reliability
If the actuation system is supported on the transmission housing, then stable force transfer is achieved, but the assembly process becomes more complex and costly
Solution Approach 1:
The support function for the actuation system is merged into the clutch unit assembly itself. The retaining nut and cover bearing are integrated components that work together to provide stable force transfer from the slave cylinder to the clutch components, eliminating the need for separate mounting structures on the transmission housing and reducing overall assembly complexity
Solution Approach 2:
The clutch unit becomes self-supporting for the actuation system. The retaining nut screwed into the guide sleeve and the cover bearing mounted on the clutch cover create a self-contained support structure that does not require external support from the transmission housing, simplifying both manufacturing and assembly processes
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design simplifies the assembly process, reduces costs, and ensures durable, reliable operation by transferring actuation forces directly to the clutch part without requiring connection to the transmission housing, minimizing axial play and preventing rattling noises.
Implementation Method 1
the retaining nut being used not only for the axial positioning of the cover bearing, but also for dissipating the forces that occur when the clutch unit is actuated
Implementation Method 2
the securing element being designed in particular as an adhesive layer bonded to the retaining nut and the guide sleeve
Data Source
Figure 1~2
AI summary
An actuation system (12) for actuating a clutch assembly (10) for coupling a drive shaft of a motor vehicle engine with at least one transmission input shaft of a motor vehicle transmission is provided, comprising a slave cylinder (16) for initiating an actuating force, a guide sleeve (26) for supporting the slave cylinder (16), and a cover bearing (36) supported on a clutch part, in particular a clutch cover (28), for mounting the clutch part (28) on the guide sleeve (26), wherein the cover bearing (36) is mounted on the guide sleeve (26), wherein the guide sleeve (26) has an external thread (32) at an end region (30) pointing away from the slave cylinder (16), and a retaining nut (34) is screwed onto the external thread (32), and wherein the cover bearing (36) is held securely in the axial direction, in particular without play, between the retaining nut (34) and the clutch part (28). is.By means of the retaining nut (34) screwed to the guide sleeve (26), the actuating forces occurring when the clutch assembly (10) is actuated can be transferred via the cover bearing (36) to the clutch part (28) without having to connect the slave cylinder (16) to a gearbox housing of a motor vehicle gearbox, thus enabling a durable, easily assembled and cost-effective clutch assembly (10).