Clutch Cover Seal Assembly Prevents Thread Contamination
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Solution Overview
Problem
Clutch assemblies face contamination issues due to the accumulation of particles at the threaded interface between the clutch cover and adjusting ring, which prevents free movement and reduces the useful life of the clutch assembly.
Innovation Solution
An elastically compressible seal assembly is implemented, comprising an annular ring and a compressible ring, centered on the central axis and positioned between the cover and adjusting ring, to prevent contamination from accumulating on the threaded inwardly facing surface of the cover.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If rubber seals are positioned over the threads at each end of the threaded interface, then particle accumulation is reduced, but particles can still accumulate on exposed portions of the threads not covered by the seals
Solution Approach 1:
The patent extracts the sealing function from traditional rubber seals and relocates it to the cavity interior, where it directly protects the threaded interface from particle contamination without being constrained by external thread coverage limitations
Solution Approach 2:
The seal assembly acts as an intermediary barrier positioned within the cavity, intercepting particles before they can reach the threaded interface between the adjusting ring and clutch cover, thereby protecting the threads from contamination
2Adaptability or versatility
If the adjusting ring is made movable to compensate for friction member wear, then clutch adjustment capability is improved, but particle accumulation on the threaded interface prevents free movement
Solution Approach 1:
The seal assembly uses a compressible ring made of deformable material that can be easily replaced if worn, providing a cost-effective solution to protect the adjusting mechanism from particle contamination and maintain smooth operation over time
3Productivity
If the clutch assembly operates for extended periods, then productivity is improved, but particle accumulation limits useful life and increases maintenance intervals
Solution Approach 1:
The seal assembly is pre-installed within the clutch cover cavity to establish a protective barrier before the clutch assembly begins operation, preventing particle accumulation on the threaded interface from the outset and extending the service life of the adjusting mechanism
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
The seal assembly effectively prevents contamination from reaching the threaded interface, ensuring smooth operation and extending the service life of the clutch assembly by preventing particle accumulation and interface seizing.
Implementation Method 1
an elastically compressible seal assembly centered on the central axis and extending between opposing axially facing surfaces of the cover and the adjusting ring
Data Source
AI summary
A clutch assembly. The assembly includes a cover having a threaded inwardly facing surface and an adjusting ring having a threaded outwardly facing surface threadably received in the inwardly facing surface of the cover. The assembly also includes a pressure plate, a friction disc, a lever reacting against the adjusting ring to move the pressure plate into and out of engagement with the friction disc, and an adjustment mechanism. The assembly includes an elastically compressible seal assembly extending between opposing axially facing surfaces of the cover and the adjusting ring to prevent contamination from passing the seal assembly and accumulating on the threaded inwardly facing surface of the cover.