Motorcycle Windscreen Height Adjustment Mechanism
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Solution Overview
Problem
Existing motorcycle windscreens with adjustable heights are difficult for drivers to adjust solo and without dismounting, require two hands, and are exposed to atmospheric agents, making them cumbersome and prone to malfunction.
Innovation Solution
A windscreen design with a sliding connection body and a locking/unlocking device protected from dust and mud, allowing single-handed height adjustment using a control element that engages with a rack and pinion mechanism, enabling easy and ergonomic height adjustment while seated on the vehicle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a pair of support elements with locking mechanisms is used to securely support the windscreen, then the windscreen stability is improved, but the operation complexity increases requiring two hands and dismounting the vehicle
Solution Approach 1:
The support system is divided into two independent support elements, each with its own locking mechanism. This segmentation allows each element to be adjusted and locked independently, maintaining stability while simplifying the adjustment process so that not both elements need to be manipulated simultaneously.
Solution Approach 2:
A cable mechanism acts as an intermediary between the activation unit and the locking elements. When the driver pulls the activation unit, the cable transmits this force to both locking elements simultaneously, enabling one-handed operation while maintaining the stability provided by the dual support element system.
2Device complexity
If the support elements are exposed to atmospheric agents for structural simplicity, then the device complexity is reduced, but the reliability decreases due to impeded sliding
Solution Approach 1:
The cable mechanism serves as a protected intermediary that transmits the activation force from the activation unit to the locking elements without the locking elements themselves needing to be exposed. The cable runs through protected pathways, shielding it from atmospheric agents while maintaining functional reliability.
Solution Approach 2:
The functional effect of the locking mechanism is replicated through the cable transmission system, allowing the locking elements to be positioned in protected environments while still achieving the same locking function through the cable-mediated force transmission.
3Ease of operation
If the activation unit is positioned on the outer surface of the windscreen, then the ease of operation is improved for single-handed adjustment, but the device complexity increases
Solution Approach 1:
The activation unit serves multiple functions: it is the control interface for the driver, the force transmission origin through the cable, and the mechanical trigger for both locking elements simultaneously. This multi-functionality reduces the need for separate control mechanisms for each support element, thereby limiting the increase in device 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
Enables simple, one-handed adjustment of the windscreen height without dismounting, providing efficient resistance to wind forces and protection from environmental elements, enhancing usability and durability.
Implementation Method 1
a thrust element or compression spring which is interposed between this support portion and said locking element
Implementation Method 2
A windscreen design with a sliding connection body and a locking/unlocking device protected from dust and mud, allowing single-handed height adjustment using a control element that engages with a rack and pinion mechanism
Data Source
Figure 1
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AI summary
A windscreen with an adjustable height for a motorcycle, which windscreen can be associated with a front part of the vehicle, comprises a support portion (7) which is secured on this front part, a transparent portion (5) which is movable relative to the support portion, and movement means (25) which can allow the height of this transparent portion (5) to be varied relative to the support portion (7). The movement means (25) comprise a body (27) which is movable in a guided manner inside a seat (26) of the support portion (7) and is integral with the transparent portion (5) of the windscreen, said movable body (27) comprising lateral movable coupling elements (32) which can cooperate with consecutive and adjacent seats present at different heights on the sides of the seat (26) of the support portion (7), said coupling elements (32) being controlled by a release unit (34) and being subjected to the thrust action of resilient elements (58) which can thrust these lateral coupling elements (32) inside the seats of the elements in the support portion (7), in order to lock said transparent portion (5) at different heights relative to the support portion (7).