Clutch-By-Wire Lever Structure for Replaceable Reactive Feedback
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Solution Overview
Problem
The clutch-by-wire system's complexity and reduced versatility due to the need for a mechanism to apply an operating reactive force and a sensor for detecting the clutch lever's rotation angle complicate the replacement of the clutch lever, especially when design changes or damage occur, making it difficult and costly.
Innovation Solution
A clutch-by-wire system design that includes a clutch lever body, a main body support portion which engages with the reactive force generation device and rotates with the clutch lever body, and a rotation sensor to detect the rotation angle, simplifying the structure and allowing easy replacement of the clutch lever by integrating functions and reducing the number of parts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the clutch lever is integrated with the reactive force generation device and rotation sensor as a single member, then the operational performance and reliability are improved, but the device complexity and replacement difficulty increase
Solution Approach 1:
The clutch lever system is divided into separate components: the clutch lever body (60) that rotates with the operation, and the main body support portion (70) that engages with the reactive force generation device. This segmentation allows the clutch lever body to be replaced independently without replacing the entire integrated assembly, reducing replacement complexity while maintaining operational reliability through proper engagement mechanisms.
2Reliability
If the clutch lever is integrated with the reactive force generation device and rotation sensor as a single member, then the operational performance is improved, but the ease of repair and replacement cost increase
Solution Approach 1:
By separating the clutch lever body from the main body support portion, the design enables independent replacement of the clutch lever body when damaged or when design changes are needed. This reduces repair costs and time compared to replacing an entire integrated assembly, while the engagement mechanisms ensure reliable operation.
Solution Approach 2:
The main body support portion (70) is designed to engage with both the clutch lever body and the reactive force generation device, serving multiple functions. This multi-functionality allows the support portion to remain in place during clutch lever body replacement, simplifying the repair process while maintaining the integrated operational performance.
3Ease of repair
If the clutch lever structure is simplified by separating components, then the ease of replacement is improved, but the stability and operational feeling may worsen
Solution Approach 1:
The clutch lever body (60) and main body support portion (70) are connected through engagement mechanisms that combine their functions while allowing independent replacement. The engagement structure merges the rotational movement of the clutch lever body with the reactive force generation, maintaining operational stability and feeling despite the simplified, separable component structure.
Solution Approach 2:
The main body support portion (70) is pre-configured with engagement features that automatically align and secure the clutch lever body during assembly. This preliminary preparation of engagement mechanisms ensures stable operation from the start, eliminating the need for complex adjustments after replacement while maintaining ease of replacement.
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 structure of the clutch lever, reduces the number of parts, prevents tilting and rattling, and enhances the operation feeling by ensuring the clutch lever can be easily replaced and maintained, while maintaining excellent operational performance.
Implementation Method 1
a coil spring which gradually changes a rate of increase of the operation reactive force of the clutch lever using an action of respective biasing forces
Data Source
AI summary
A clutch-by-wire system includes a clutch lever body (60) which is operated by an occupant, a knocker (70) which engages with the clutch lever body (60) and rotates around a rotation axis (O), a reactive force generation device (130) which engages with the knocker (70) and generates an operation reactive force on the clutch lever body (60), and a rotation sensor (160) which detects a rotation angle of the knocker (70).