Bicycle Attachment Linkage for Side-by-Side Riding
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Solution Overview
Problem
There is a need for a cost-effective and space-efficient solution that allows two people to ride bicycles side-by-side while addressing the high cost and space requirements of four-wheel bicycles.
Innovation Solution
A four-wheel bicycle conversion kit that includes a steering linkage with clamps, alignment rods, and a connecting rod, and a seat assembly with a seat base support, box frame assemblies, and a carrier basket, allowing two two-wheel bicycles to be converted into a single four-wheel bicycle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a four-wheel bicycle is used to allow two people to ride side-by-side, then the ability to ride in pairs is improved, but the cost and space requirements increase significantly
Solution Approach 1:
The invention divides the four-wheel bicycle into two separate two-wheel bicycles that can be converted into a single four-wheel configuration. Each bicycle maintains its own wheels, frame, and steering mechanism, while a linkage system connects them to function as a unified four-wheel bicycle. This segmentation allows the system to achieve four-wheel capability without requiring a completely new bicycle design, thereby reducing cost and space requirements.
Solution Approach 2:
The invention merges two separate two-wheel bicycles into a single four-wheel bicycle configuration through a linkage system that connects the handlebars and frames. The linkage system includes connecting rods, alignment rods, and clamps that synchronize the movement of both bicycles, allowing them to function as a unified four-wheel bicycle. This merging approach enables two people to ride side-by-side while sharing a single vehicle structure, reducing overall cost and space requirements.
2Stability of the object's composition
If a four-wheel bicycle is used to allow two people to ride side-by-side, then the stability and parallel frame maintenance are improved, but the device complexity increases
Solution Approach 1:
The linkage system employs asymmetric positioning of connection points and differential linkage lengths to maintain parallel frames. The alignment rods are positioned at specific locations on the handlebars and frames, with varying lengths designed to compensate for the natural separation between the two bicycles. This asymmetric design ensures that when the bicycles are connected, their frames remain parallel during operation, providing stability without requiring complex active control systems.
Solution Approach 2:
The linkage system acts as an intermediary mechanism between the two separate bicycles, transmitting and coordinating their movements. The connecting rods and alignment rods serve as intermediaries that synchronize the steering actions of both bicycles, ensuring that their frames remain parallel. This intermediary linkage system provides the necessary stability and parallel frame maintenance while distributing the complexity across multiple simple mechanical components rather than requiring a single complex control system.
3Device complexity
If two separate two-wheel bicycles are used, then the cost and space requirements are reduced, but the ability to ride side-by-side as a unified vehicle is compromised
Solution Approach 1:
The linkage system is designed to be dynamic, allowing the two bicycles to move and steer independently while maintaining their parallel relationship. The connecting rods and alignment rods are positioned to permit natural movement of each bicycle's wheels and handlebars, while simultaneously coordinating their motion to maintain parallel frames. This dynamic design enables the system to function as a unified four-wheel bicycle when needed, while allowing each component to move independently during operation, thus maintaining low cost and space requirements.
Data Source
AI summary
A bicycle attachment is a bench style seating device capable of being secured upon two bicycles. The seat of the bench covers the seat post of each bicycle. A pair of underside cages secure over each rear tire of each bicycle. The attachment has a steering linkage which has a pair of clamps, a pair of alignment rods, and a connecting rod. The bench has a seat assembly which in turn has a seat base and a back rest, a seat base support.