Clutch Weight Assembly Synchronization via Co-rotating Elements
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Solution Overview
Problem
Existing clutches in automatic transmission mechanisms experience unstable and inefficient power transmission due to variable throttle conditions, leading to weak engaging force and clutch slippage, despite attempts to adjust tension spring strength and material flexibility.
Innovation Solution
A clutch design featuring a clutch weight assembly with co-rotating elements and a main driving assembly, where the push element compresses the abutting section of each clutch weight to enhance engaging force and reduce vibration, ensuring smooth and stable power transmission by synchronizing rotation and adjusting engagement timing through compression springs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the tension strength of each tension spring is adjusted to achieve synchronous movement of clutch weights, then the movement timing of clutch weights should be synchronous, but the engaging force remains weak and the engagement becomes unstable due to variable throttle conditions causing different centrifugal forces
Solution Approach 1:
The patent replaces static tension springs with dynamic push elements that can actively adjust their force output. The push elements are driven by the main driving assembly to provide dynamic compression forces on the clutch weights, allowing the system to adapt to varying throttle conditions and maintain stable engagement while achieving synchronous movement timing.
Solution Approach 2:
The patent introduces co-rotating elements as intermediary components between the push elements and clutch weights. These co-rotating elements transmit and transform the forces from the push elements to the clutch weights, enabling better force distribution and synchronization while enhancing the engaging force through mechanical advantage.
2Ease of operation
If material flexibility is increased to improve engagement smoothness, then the clutch weight area becomes more flexible, but the engaging force becomes too weak causing serious clutch slippage
Solution Approach 1:
The patent changes the force application parameters by introducing active push elements that can vary their compression force based on operating conditions. Instead of relying solely on material flexibility, the system uses controllable mechanical forces from the push elements to achieve both smooth engagement and sufficient engaging force to prevent slippage.
3Productivity
If the clutch weight is designed to fly outward at high rotation speed to grab the driven part, then power transmission engagement is achieved, but friction temperature increases and wear pad durability decreases due to slippage
Solution Approach 1:
The patent applies preliminary compression forces to the clutch weights through push elements before full engagement occurs. This pre-compression ensures that when the clutch weights fly outward to engage the driven part, they do so with optimal force and minimal slippage, reducing friction temperature and wear pad degradation.
4Adaptability or versatility
If tension springs are used to determine opening/closing timing, then the timing can be adjusted by changing spring tension, but the structure becomes complex and the engaging force remains insufficient
Solution Approach 1:
The patent replaces the passive mechanical spring-based timing system with an active system driven by the main driving assembly. The push elements, controlled by the rotation of the main driving assembly, provide timing control through their engagement and disengagement cycles, eliminating the need for complex spring adjustment mechanisms while maintaining adaptability.
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 solution achieves stable and efficient power transmission with reduced slippage and lower friction temperatures, extending the durability of wear pads and allowing for adjustable engagement timing for improved riding performance.
Implementation Method 1
when the speed of the rotation is high enough and the centrifugal force of clutch weight is strong enough to overcome the inward bending strength of the flexible component of clutch weight assembly
Implementation Method 2
the push element compresses the abutting section of each clutch weight to enhance engaging force
Implementation Method 3
when the friction resistance between the wear pad of clutch weight and the driven part is greater than the predetermined transformable strength of co-rotating element
Data Source
AI summary
A clutch is provided with a clutch weight assembly (10), a main driving assembly (20), a plurality of co-rotating elements (30), and a base plate (40). The main driving assembly (20) will be rotated when the power source is activated, and the co-rotating elements (30) are driven synchronously to rotate and then the clutch weight assembly (10) will be driven to rotate synchronously by the co-rotating elements (30). When the speed of the rotation is high enough and the centrifugal force of clutch weight (13) is strong enough to overcome the inward bending strength of the flexible component (14) of the clutch weight assembly (10), then the clutch weight (13) will fly outward to grab the driven part (60) to proceed the slippery engagement.