Saddle-ride Vehicle Windshield Lever with Retractable Grip
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Solution Overview
Problem
Existing saddle-ride-type vehicles with screen moving devices driven by electric motors require complex and costly power transmission mechanisms, and manual operation levers are limited in enhancing operating properties due to size constraints, affecting both user effort and field of view.
Innovation Solution
A manually operated operation lever with a gripped portion that can project and fold, supported by rotatable rail brackets, incorporating a screen biasing spring and guide holes for compact design and reduced operating force, allowing vertical screen movement with enhanced operating properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the operation lever is elongated to reduce operating force, then the operating property is enhanced, but the device size increases and may affect parts around the operation lever and the occupant's field of view
Solution Approach 1:
The grip is designed to be movable relative to the lever main portion, allowing it to switch between a projecting position (when not in use) and a storage position (during operation). This dynamic configuration enables the operation lever to maintain a long effective length for reduced operating force while retracting to a compact form when not needed, thus resolving the contradiction between ease of operation and device size.
Solution Approach 2:
The grip moves along the longitudinal axis of the operation lever, utilizing the one-dimensional space along the lever's length. By extending the grip along this dimension when not in use and retracting it during operation, the design achieves both a long effective lever arm for reduced effort and a compact profile when the grip is retracted, effectively resolving the size-operating force trade-off.
2Volume of moving object
If the grip is positioned at the storage position during operation, then the device becomes compact, but the grip may interfere with the steering handlebar when steered to the left side
Solution Approach 1:
The grip's position is dynamically adjusted based on operational needs. When the steering handlebar is turned to the left, the grip can be positioned at the storage position to avoid interference. When the handlebar is in the neutral or right position, the grip can extend to the projecting position for optimal operating leverage. This dynamic positioning resolves the contradiction between compactness and operational effectiveness.
3Extent of automation
If an electrically operated motor is used to drive the screen, then the screen can be moved automatically, but the power transmission mechanism becomes complicated and expensive
Solution Approach 1:
The invention extracts and eliminates the complex electrical motor and power transmission mechanism (drum, pulley, cable) from the system. Instead, it employs a simple manual operation lever with direct mechanical linkage to the screen support members. This extraction of the electrical subsystem resolves the contradiction by achieving screen movement functionality through a much simpler mechanical means, thereby reducing device complexity and cost while maintaining the core function.
Solution Approach 2:
The operation lever system is self-contained and manually operated, requiring no external power source or complex control systems. The user directly operates the lever to move the screen, and the grip's movable design provides mechanical advantage to reduce the effort required. This self-service approach eliminates the need for electrical motors and complex power transmission mechanisms, resolving the contradiction between automation and complexity.
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 enables a compact screen moving device with reduced operating force, minimizing interference with the steering handlebar and improving user interaction while maintaining a clear field of view, thus enhancing the overall operating experience.
Implementation Method 1
a screen biasing spring for biasing the screen upward is disposed between a rail bracket and the connecting member
Data Source
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AI summary
A saddle-ride-type vehicle comprising a wind shield screen (20) arranged in front of a steering handlebar, wherein vertical movement of a pair of left and right support members (22) disposed on the screen (20) are guided by a pair of left and right fixed rail brackets (23), an operation lever (24) which is manually operable so as to vertically move the screen (20) and is constituted of a lever main portion (36) which is rotatably supported on at least one of the pair of rail brackets (23) and is connected to the respective support member (22), and a grip (37) which is connected to the lever main portion (36) such that the grip (37) is operable between a projecting position where the grip (37) projects from the lever main portion (36) and a storage position where the grip (37) is folded toward a lever main portion side.