Gear-shift Control Apparatus for Motorcycle Width Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing gear-shift controlling systems for saddle riding vehicles, such as motorcycles, increase vehicle width due to the arrangement of components like the gear change pedal, click generating mechanism, and attachment plate, which is a challenge for size reduction in the vehicle-width direction.
Innovation Solution
A gear-shift controlling apparatus that includes a detection mechanism with a sensor, a moving member, and a coupling member arranged alongside the change pedal, integrated with the vehicle body frame, reducing the need for additional base plates and allowing for a more compact design by utilizing existing frame members, and employing a non-contact switch for signal generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the gear change pedal, click generating mechanism, and attachment plate are collectively attached to the attachment plate extending in vehicle-width direction, then the gear-shift function is achieved, but the vehicle width increases
Solution Approach 1:
The patent repositions the gear-shift components from extending in the vehicle-width direction to extending in the vehicle-length direction along the sub-frame. This dimensional change allows the sensor, moving member, coupling member, and change pedal to be arranged sequentially along the longitudinal direction, thereby reducing the vehicle width while maintaining the gear-shift function.
Solution Approach 2:
The sub-frame is utilized as a multi-functional component, serving both as a structural support and as the mounting basis for the gear-shift detection mechanism. By integrating the detection mechanism with the existing sub-frame, the patent eliminates the need for separate attachment plates and reduces overall vehicle width.
2Reliability
If additional base plates and attachment plates are used to mount the detection mechanism components, then the components are securely mounted, but the vehicle width increases and manufacturing cost increases
Solution Approach 1:
The patent merges the mounting function of separate base plates and attachment plates into the existing sub-frame structure. The sensor, moving member, and coupling member are directly mounted to the sub-frame, eliminating redundant components and reducing vehicle width while maintaining secure mounting.
Solution Approach 2:
The sub-frame serves multiple functions: it provides structural support for the vehicle and simultaneously serves as the mounting platform for the entire detection mechanism. This multi-functionality eliminates the need for additional dedicated mounting plates.
3Measurement precision
If the sensor, moving member, and coupling member are arranged extending in vehicle-width direction, then the gear-shift detection is achieved, but the vehicle width increases
Solution Approach 1:
The patent changes the arrangement dimension of the detection mechanism components from the vehicle-width direction to the vehicle-length direction. The sensor, moving member, and coupling member are positioned sequentially along the longitudinal direction of the sub-frame, maintaining detection precision while reducing vehicle width.
Data Source
AI summary
A saddle riding type vehicle includes a sensor that generates a signal, a moving member that moves a movable portion of the sensor and a coupling member that couples the moving member to a change pedal. The change pedal, the coupling member, the moving member and the sensor are arranged sequentially alongside one another along a sub-frame. The sub-frame is an existing member constituting a part of a vehicle body frame. Thus, base plates dedicated to the moving member, the sensor and the like can be eliminated.