Motorcycle Windscreen Adjustment Lever Mechanism
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Solution Overview
Problem
Existing windshield adjustment mechanisms for motorcycles are cumbersome to operate, particularly with gloved hands, and require varying actuation forces for differently sized or shaped windshields, often risking scratches during adjustment.
Innovation Solution
A windshield adjustment device featuring a support structure with pivotably connected lever elements, where the actuating lever and lever elements are integrated and coaxially or axially parallel, ensuring a consistent actuation force and allowing for height and pivot adjustments, with the lever positioned for easy access and operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a traditional lever mechanism with multiple pivoting levers and joints is used, then the windshield can be adjusted, but the mechanism becomes cumbersome to operate and requires varying actuation forces
Solution Approach 1:
The traditional multi-component lever mechanism is segmented into a single integrated lever element that combines the functions of multiple pivoting levers. This lever element has a first arm pivotably connected to the support structure and a second arm pivotably connected to the windshield holder, eliminating the need for intermediate levers and multiple pivoting joints while maintaining the adjustment functionality.
Solution Approach 2:
Multiple separate lever components are merged into a single integrated lever element. The lever element combines the first arm connected to the support structure and the second arm connected to the windshield holder into one piece, simplifying the mechanism from multiple discrete parts to a unified component that performs the same adjustment function.
2Adaptability or versatility
If the windshield holder is connected through multiple intermediate levers, then the adjustment is achieved, but the operating force varies for differently sized windshields
Solution Approach 1:
The lever element is designed with adjustable arm lengths or configurable pivot points that can be adapted to different windshield sizes and shapes. By changing the geometric parameters of the lever element (such as the length of the first arm versus the second arm, or the position of the pivot axes), the mechanism can accommodate various windshield dimensions while maintaining consistent actuation force through optimized leverage ratios.
3Length of moving object
If multiple pivoting joints and intermediate levers are used, then the windshield adjustment range is achieved, but the risk of scratching the windshield increases
Solution Approach 1:
The intermediate levers that come into contact with or near the windshield surface are extracted from the mechanism. By directly connecting the lever element's second arm to the windshield holder without intermediate components, the design eliminates potential sources of scratching while maintaining the full adjustment range through the optimized lever geometry.
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
Facilitates easy, scratch-free adjustment of windshields with a consistent actuation force, suitable for various dimensions and shapes, and can be operated with gloved hands, enhancing usability and compatibility with existing navigation systems.
Implementation Method 1
at least one lever element (110, 112) acting between the windshield holder (108) and the support structure (106)... The at least one lever element (110, 112) can be pivotably connected to the support structure (106) on one side and to the windshield bracket (108) on the other
Implementation Method 2
The lengths of the load arm and the power arm are coordinated such that an approximately constant operating force is required over the entire adjustment range. The power arm can be longer than the load arm.
Data Source
Figure 1
Figure 2
AI summary
An adjustment device (104) for adjusting a windscreen (102) of a motorcycle (100), the adjustment device (104) having a supporting structure (106) on the motorcycle, a windscreen holder (108) which is movable relative to the supporting structure (108) and at least one lever element (110, 112) which is effective between the windscreen holder (108) and the supporting structure (106), wherein the adjustment device (104) has at least one actuating lever (122) with an actuating-lever axis of rotation (127) arranged on the supporting structure (106), a load arm (124) and a manually actuable power arm (126), a windscreen arrangement for a motorcycle (100), wherein the windscreen arrangement has an adjustment device (104) of this type and a windscreen (102) arranged on the windscreen holder (108), and a motorcycle (100), wherein the motorcycle (100) has a windscreen arrangement of this type.