Bicycle Embedded Handle Reducing Wind Resistance
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Solution Overview
Problem
Aero handlebars on bicycles have a considerable total thickness due to their predetermined thickness and height, which increases wind resistance and reduces riding speed, especially for high-performance applications like ironman triathlon.
Innovation Solution
An embedded handle structure with a depression in the joining portion and a stem with an engaging portion that forms a smooth surface, reducing thickness and wind resistance, while allowing for easy assembly and adjustment to fit different riders, and incorporating a fastening mechanism with conical interfaces for increased stability and manufacturing efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If traditional aero handlebars with predetermined thickness and height are used to firmly connect the handlebar and stem, then connection strength is improved, but total thickness increases and wind resistance increases
Solution Approach 1:
The handlebar is nested directly into the stem through a recess in the handlebar that receives the stem's protruding portion, eliminating the need for external front covers and reducing overall thickness while maintaining connection strength
Solution Approach 2:
The connection mechanism transitions from external coverage (front cover) to internal nesting (recess receiving protrusion), changing the dimensional approach to achieving firm connection while reducing thickness
2Stability of the object's composition
If traditional handlebar connection structures with front covers are used, then connection stability is improved, but total thickness increases
Solution Approach 1:
The stem's protruding portion is nested within the handlebar's recess, creating a stable connection without adding external thickness from front covers
Solution Approach 2:
The connection structure merges the handlebar and stem into a more integrated assembly by eliminating the front cover component, reducing total thickness while maintaining stability
3Strength
If conventional handlebar assembly methods are used, then connection firmness is achieved, but assembly time and complexity increase
Solution Approach 1:
The recess and protruding portion are pre-formed during manufacturing, allowing for quick snap-fit assembly without requiring complex fastening operations or additional components
Solution Approach 2:
The connection interface is segmented into complementary geometric features (recess and protrusion) that enable straightforward assembly while maintaining firm connection
Data Source
AI summary
An embedded handle and handle structure of the embedded handle for a bicycle are provided. The handle structure includes the embedded handle and a stem. The embedded handle includes two holding portions and a joining portion. The middle of the joining portion has a depression. The depression has a connecting portion, and the stem has an engaging portion. The handlebar further includes a handle mounting hole. And the engaging portion of the stem further includes a first mounting hole and a second mounting hole. When the engaging portion engages with the depression, the first mounting hole, the second mounting hole and the handle mounting hole are aligned. The first fastener is inserted into the aligned holes, and the second fastener is inserted into the aligned holes along a direction opposite to the first fastener and joined to the first fastener.