Bicycle Armrest Handlebar Concave Forearm Support
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Solution Overview
Problem
Conventional bicycle armrest handlebars are not ergonomically designed, leading to rider discomfort and reduced pedaling efficiency due to gaps between the convex arc surface and the forearm, causing instability in airflow and increased resistance during long-distance rides.
Innovation Solution
A bicycle armrest handlebar with a design that is first outwardly expanded and then inwardly reduced, featuring a supporting segment with a concave curved surface where the inner abutment surface is higher than the outer, and a unique wind deflection design with multiple points to guide airflow and reduce wind resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the armrest handlebar uses a conventional round tube design with a convex arc upper surface, then the structure is simple and easy to manufacture, but the rider's forearm cannot rest comfortably due to the gap between the convex arc and the forearm
Solution Approach 1:
The patent applies curvature by transforming the conventional convex arc upper surface into a concave curved surface that matches the natural contour of the human forearm. The supporting segment features a concave curvature designed to accommodate the forearm's shape, eliminating gaps and improving contact comfort during long-distance riding.
Solution Approach 2:
The patent implements local quality by creating different surface characteristics in different regions of the handlebar. The supporting segment has a concave curved surface specifically designed for forearm contact, while other segments maintain different geometric features suitable for their specific functions, such as the coupling segment for structural connection.
2Ease of operation
If the armrest handlebar has a conventional parallel arrangement, then the structure is simple, but the rider's arms form a triangular shape requiring inward retraction that causes fatigue
Solution Approach 1:
The patent applies asymmetry by designing the supporting segment with an outwardly expanded portion that protrudes outward relative to the coupling segment. This asymmetric configuration allows the rider's arms to extend naturally in a more linear fashion from the shoulders to the handlebars, reducing the triangular formation and minimizing the need for inward arm retraction during riding.
3Productivity
If the armrest handlebar has a convex arc upper surface, then the structure is simple, but gaps between the convex arc and forearm cause unstable airflow and increased resistance
Solution Approach 1:
The patent applies curvature by transforming the conventional convex arc upper surface into a concave curved surface that matches the natural contour of the human forearm. The supporting segment features a concave curvature designed to accommodate the forearm's shape, eliminating gaps and improving contact comfort during long-distance riding.
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 ergonomic design enhances rider comfort and reduces physical exertion, while the airflow guide and wind deflection features improve airflow and reduce air resistance, resulting in increased pedaling efficiency and reduced fatigue during long-distance rides.
Implementation Method 1
an airflow guide design though an inner abutment surface higher than an outer abutment surface
Implementation Method 2
a unique wind deflection design
Data Source
AI summary
A bicycle armrest handlebar, designed to be used in pairs and connected to a bicycle steeling handlebar near a middle portion of the bicycle steeling handlebar, includes a coupling segment, a supporting segment, and a holding segment. The coupling segment is coupled to the bicycle steeling handlebar. The supporting segment is located at a front end of the coupling segment and has an upper surface that is a concave curved surface. The supporting segment has an outwardly expanded portion, an inwardly reduced and upwardly inclined portion and a downwardly inclined portion that are arranged in sequence from its rear end to its front end. The holding segment is located at a front end of the downwardly inclined portion of the supporting segment.