Rotatable Handlebar Control Assembly for Adjustable User Ergonomics
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Solution Overview
Problem
Existing handlebar devices for motor vehicles, particularly tilting vehicles, often position controls unfavorably for users with varying hand sizes, making it difficult to reach or actuate switches, and adjustment is either impossible or costly and laborious.
Innovation Solution
A handlebar device with a rotatable shifting means and an adjustment unit that allows for detachable, non-rotational fixation to the handlebar tube, enabling adjustable angle and distance settings to accommodate different ergonomic needs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If handlebar controls are fixed at a uniform distance and angle from the handlebar, then the structure is simple and stable, but the ergonomics deteriorate for users with different hand sizes
Solution Approach 1:
The shifting means is designed to be rotatable about the handlebar axis, transforming a static fixed-position control into a dynamic adjustable control. This allows the control angle to be changed according to user needs while maintaining structural simplicity through a single rotational degree of freedom
Solution Approach 2:
The handlebar control system is divided into separable components: the shifting means that can be detached and reattached at different angular positions, and the handlebar tube with receiving portions. This segmentation enables easy reconfiguration without requiring complex integrated adjustment mechanisms
2Ease of operation
If handlebar controls are made adjustable for different users, then ergonomics improve, but the adjustment process becomes laborious and costly
Solution Approach 1:
Multiple receiving portions are pre-positioned at different angular locations on the handlebar tube during manufacturing. This preliminary preparation allows the shifting means to be quickly attached at the desired position without requiring complex adjustment mechanisms or technical expertise during actual use
Solution Approach 2:
The shifting means can be easily detached and reattached by the user themselves without requiring professional service or specialized tools. The simple push-on/pull-off mechanism with corresponding receiving portions enables users to perform the adjustment themselves in a matter of seconds
3Adaptability or versatility
If the shifting means is rotatable about the handlebar axis, then angular adjustment is enabled, but non-rotational fixing becomes more difficult
Solution Approach 1:
The shifting means features an asymmetric design with a specific opening geometry that corresponds to the receiving portions on the handlebar tube. When attached, the asymmetric shapes align in a unique orientation, providing both angular adjustment capability and reliable non-rotational fixing through the interlocking geometry
Solution Approach 2:
The receiving portions act as an intermediary element between the rotatable shifting means and the stationary handlebar tube. This intermediary structure enables the shifting means to be securely fixed at specific angular positions while maintaining the ability to be detached and repositioned
Data Source
AI summary
A handlebar assembly for a vehicle comprising at least one handlebar pipe extending along an axis and having a receiving portion with a circular cross-section. At least one stop means is fixed relative to the receiving portion. At least one shifting means is slidable via an opening therein onto the receiving portion, and can be arranged so as to rest, rotatably about the handlebar axis, against the receiving portion and against the stop means. An adjusting means is arranged on a side of the shifting means remote from the stop means so as to rest against the shifting means, and can be detachably fixed to the handlebar pipe. When detached from the handlebar pipe, the adjusting means releases the shifting means so as to be rotatable about the axis, and when fixed to the handlebar pipe, the adjusting means fixes the shifting means against rotation about the axis.