Gear Shift Control Device Lateral Offset Layout
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Solution Overview
Problem
Existing gear shift control devices for saddle ride type vehicles, such as motorcycles, face interference issues between the operation pedal and movable parts, limiting the freedom in layout of the engine and vehicle body due to overlapping movable ranges.
Innovation Solution
The gear shift control device configures the operation pedal and movable part to have a non-overlapping movable range in the vehicle width direction, with the movable part offset from the operation pedal's range, allowing partial overlap in a side view, and incorporates a foot-movement restriction portion to prevent rider interference, while being supported by a pivot frame and side stand bracket for optimal positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the operation pedal and movable part are disposed at a distance to avoid interference, then interference is prevented, but freedom in layout of the engine and vehicle body is impaired
Solution Approach 1:
The patent transitions from one-dimensional spacing (front-rear direction only) to two-dimensional arrangement by utilizing the vehicle width direction. The movable part is positioned laterally offset from the operation pedal's movable range, creating a spatial configuration where both components can operate without interference while occupying minimal space. This dimensional change allows compact integration without compromising layout freedom for the engine and vehicle body.
2Adaptability or versatility
If the operation pedal and movable part are disposed close to each other to improve layout freedom, then space is saved, but interference during operation occurs
Solution Approach 1:
The patent resolves the interference issue by positioning the movable part not only in the front-rear direction but also laterally offset in the vehicle width direction. This creates a spatial separation where the movable ranges of the operation pedal and movable part do not overlap, even when the components are disposed close to each other. The lateral offset ensures that the foot operating the pedal cannot interfere with the movable part's operation range.
Solution Approach 2:
The patent introduces a foot-movement restriction portion as an intermediary structure that physically limits the lateral movement of the rider's foot. This restriction portion, integrated into the operation pedal assembly, prevents the foot from moving inward in the vehicle width direction, thereby ensuring that the foot cannot encroach into the movable part's operation range. This intermediary structure guarantees reliable operation without requiring excessive spacing.
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 configuration reduces space occupancy, prevents interference, and enhances layout flexibility by allowing the operation pedal and movable part to be positioned closer without interference, improving engine and vehicle body layout freedom.
Implementation Method 1
a return mechanism configured to apply a spring force in a return direction to the operation pedal
Data Source
AI summary
A gear shift control device of a saddle ride type vehicle includes an operation pedal; a movable part which includes a movable member interlocking with and connected to the operation pedal and which has at least one of a click mechanism configured to give click feeling to an operation of the operation pedal, a stopper mechanism configured to restrict a turning operation range of the operation pedal, and a return mechanism configured to apply a spring force in a return direction to the operation pedal; and a detector which detects a gear shift operation performed by using the operation pedal, the gear shift control device configured to make a transmission perform a gear shift on the basis of a detection result of the detector.