Bicycle Rack Assembly with Sliding Upright Units
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Solution Overview
Problem
Existing rack devices do not effectively allow multiple bicycles to be pedaled indoors while maintaining the freedom of rotation for their rear wheels, limiting indoor exercise options.
Innovation Solution
A dual upright unit system where each bicycle's rear axle is positioned on an upper end of a selectively positioned upright unit, allowing the rear wheels to spin freely, with adjustable spacing and secure mounting for multiple bicycles, including multiple gear options.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If a single upright rack device is used, then it can support one bicycle with free-spinning rear wheel, but it cannot accommodate multiple bicycles simultaneously
Solution Approach 1:
The rack device is divided into multiple independent upright units (first upright unit, second upright unit, etc.), each capable of supporting one bicycle. These units are connected through a coupling mechanism that allows them to function independently while being part of a unified system, enabling support for multiple bicycles without excessive complexity
Solution Approach 2:
Each upright unit is designed with universal functionality to support any bicycle type (single gear, multiple gear, road bikes, mountain bikes, etc.). The standardized coupling mechanism allows any upright unit to be positioned in any location, making the entire rack system adaptable to various configurations and bicycle types
2Adaptability or versatility
If upright units are fixed in position, then the structure is stable, but the rack cannot be adjusted to accommodate different bicycle positions
Solution Approach 1:
The coupling mechanism between upright units incorporates movable elements (such as sliding components or adjustable connectors) that allow the upright units to be repositioned along the rack structure. This dynamic capability enables adaptation to different bicycle positions while maintaining structural integrity through controlled movement rather than complete rigidity
3Ease of operation
If the rear wheel touches the support surface, then the bicycle is stable, but the wheel cannot spin freely for pedaling exercise
Solution Approach 1:
The upright units are designed to elevate the bicycle rear wheel off the support surface by a specific distance. This extraction of the wheel from direct contact with the ground enables free rotation for pedaling exercise while the upright units themselves provide the necessary stability and positioning support
Data Source
AI summary
A bicycle rack assembly includes a first upright unit that is selectively positioned on a support surface. The first upright unit has an upper end and the upper end receives a rear axle of a first bicycle. In this way a rear wheel of the first bicycle is spaced from the support surface to spin freely when the first bicycle is mounted and pedaled. A second upright unit is slidably coupled to the first upright unit and the second upright unit is selectively positioned on the support surface. The second upright unit has a top end and the top end receives a rear axle of a second bicycle. In that way a rear wheel of the second bicycle is spaced from the support surface to spin freely when the second bicycle is mounted and pedaled.