Bicycle Frame Convertible Dropout Axle Adapter
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Bicycle frames are not easily adaptable to accommodate wheel axles of different sizes, limiting the versatility of bicycles with varying wheel configurations.
Innovation Solution
A bicycle frame design featuring a wheel support with an axle opening and slot system, along with a converter mechanism that allows for the alignment and secure fitting of wheel axles of different diameters and lengths, enabling easy conversion between wheel configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a bicycle frame is designed with a fixed axle opening size, then the manufacturing precision and structural simplicity are improved, but the adaptability to different wheel axle configurations deteriorates
Solution Approach 1:
The dropout incorporates a movable converter that can shift positions along the dropout body, allowing the axle opening to dynamically adjust its effective width. This enables the same dropout structure to accommodate different axle sizes (e.g., 10mm, 12mm, 15mm) while maintaining manufacturing simplicity.
Solution Approach 2:
The dropout is segmented into multiple functional components: a fixed dropout body, a movable converter with adjustable position, and alignment features. This segmentation allows the converter to be independently positioned to match different axle widths without redesigning the entire dropout structure.
2Adaptability or versatility
If a bicycle frame uses a converter mechanism to accommodate different axle sizes, then the adaptability to different wheel configurations is improved, but the device complexity increases
Solution Approach 1:
The converter acts as an intermediary component between the fixed dropout body and the variable axle. It mediates the size mismatch by providing an adjustable interface that matches different axle dimensions, thereby enabling adaptability without requiring multiple specialized dropouts.
Solution Approach 2:
The converter is designed as a universal component that can accommodate multiple axle sizes through its adjustable mechanism. A single converter design can work with various axle diameters and widths, reducing the need for multiple specialized parts and thereby limiting the increase in overall device complexity.
3Manufacturing precision
If the axle opening width is fixed, then the manufacturing precision is improved, but the ability to securely fit different axle diameters deteriorates
Solution Approach 1:
The dropout maintains consistent manufacturing precision in the fixed dropout body, while the converter introduces local variability to match different axle dimensions. The alignment features (such as pins or slots) ensure that this local adjustment does not compromise the overall structural precision and secure fitting.
4Ease of operation
If a converter mechanism is added to the dropout, then the ease of operation for wheel conversion is improved, but the ease of manufacture deteriorates
Solution Approach 1:
The converter is pre-configured with alignment features and adjustment mechanisms during manufacturing, allowing for easy field conversion between different axle sizes. The preliminary setup of the converter's adjustment system enables users to quickly switch wheel configurations without complex assembly procedures.
Data Source
AI summary
The present invention provides a bicycle that includes a frame that is specifically design to accommodate different axle configurations. The bicycle includes a wheel including a wheel axle and a bicycle frame comprising a wheel support including an axle opening having a first width and an axle slot contiguous with the axle opening and having a second width less than the first width. Preferably, a portion of the wheel axle positioned in the axle opening has a diameter that substantially matches the first width. The present invention also provides a method of changing an original wheel of a bicycle. The method comprises removing the original wheel from the wheel support, positioning a converter in the axle opening, providing a replacement wheel having a replacement hub that has a replacement axle, and sliding the replacement axle through the axle slot and into the receiving area defined by the converter.