Separator Spring for Clutch Plate Stabilization
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Solution Overview
Problem
Clutch assemblies with multiple reaction and friction plates experience heat, friction losses, and wear due to unintended contact and vibration, particularly when the reaction plates are not engaged, leading to excessive movement and high friction losses.
Innovation Solution
A clutch assembly incorporating a separator spring system that maintains a predetermined distance between reaction plates when de-energized and allows engagement when energized, using a combination of first and second portions with bias members to control plate spacing and prevent unnecessary contact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If reaction plates are spaced close together to reduce assembly size, then compactness is improved, but plate stability deteriorates causing flutter and excessive movement
Solution Approach 1:
The separator spring acts as an intermediary element positioned between adjacent reaction plates. It provides a predetermined separation distance that prevents direct contact between plates during normal operation, thereby stabilizing the plates and preventing flutter while maintaining a compact overall assembly size.
2Ease of operation
If reaction plates are allowed to move freely when not engaged, then ease of operation is improved, but friction losses worsen due to unintended contact with friction plates
Solution Approach 1:
The separator spring applies a preliminary separating force between reaction plates before any harmful contact can occur. This pre-established separation prevents the reaction plates from inadvertently contacting the friction plates during operation, thereby eliminating friction losses while still allowing the clutch to engage smoothly when needed.
3Stability of the object's composition
If separator spring maintains large separation distance between reaction plates, then plate stability is improved, but device complexity worsens due to additional components
Solution Approach 1:
The separator spring utilizes a flexible elastic body with a simple generally U-shaped cross-section. This flexible element provides the necessary separation function through its elastic properties without requiring complex mechanical structures, thereby maintaining plate spacing stability while minimizing device complexity.
4Stability of the object's composition
If multiple separator springs are used to maintain plate spacing, then plate separation stability is improved, but manufacturing precision requirements worsen due to alignment tolerances
Solution Approach 1:
The separator spring design integrates both separation and positioning functions into a single unified component. The generally U-shaped cross-section provides inherent alignment features that guide the spring into proper position during assembly, thereby maintaining consistent plate separation across multiple springs while reducing the stringency of alignment tolerance requirements.
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 separator spring system effectively reduces friction losses and wear by maintaining proper spacing between reaction and friction plates, ensuring smooth operation and preventing premature wear, even at high rotational speeds.
Implementation Method 1
The bias member may be configured to urge the legs apart
Implementation Method 2
The second portions are biased to maintain a predetermined first distance between the plurality of first portions when the actuator is de-energized
Implementation Method 3
The spring rate of the bias members may be configured to allow the force of the actuator to overcome the spring rate of the bias members
Data Source
AI summary
A clutch assembly includes a plurality of reaction plates separated by one or more separator springs to maintain a distance between the reaction plates when the clutch is not activated.