Bicycle Auxiliary Frame Plank Mudguard Design
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Solution Overview
Problem
Conventional auxiliary frames for bicycles do not include a mudguard, leading to the buggy becoming dirty and components being damaged by water and mud when the bicycle passes over puddles.
Innovation Solution
An auxiliary frame with a plank member positioned between the buggy and the rear wheel, which includes horizontally spaced lateral propping members, a plank member, and a supporting frame with a hook portion to shield the buggy from mud and water, preventing damage during biking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If no mudguard is provided on the auxiliary frame, then the structure remains simple and lightweight, but the buggy becomes dirty and components are damaged by water and mud when passing over puddles
Solution Approach 1:
The auxiliary frame is divided into multiple functional segments: lateral propping members for structural support, a plank member specifically for mudguard functionality, and a supporting frame for buggy attachment. This segmentation allows the mudguard function to be added without redesigning the entire frame structure.
Solution Approach 2:
The plank member serves multiple functions: it acts as a mudguard to protect from water and mud, provides additional structural support between the lateral propping members, and helps define the spatial arrangement of the auxiliary frame components.
2Object-affected harmful factors
If a plank member is added to serve as a mudguard, then protection from water and mud is improved, but the device complexity increases
Solution Approach 1:
The mudguard function is merged with the structural support function by integrating the plank member into the auxiliary frame structure. The plank member is positioned between the lateral propping members and works simultaneously as both a protective mudguard and a structural element, reducing the need for separate components.
Solution Approach 2:
The plank member is designed to perform multiple functions: mudguard protection, structural support, and spatial definition. This multi-functionality reduces the overall number of components needed in the auxiliary frame system.
Data Source
AI summary
An auxiliary frame is adapted to be mounted on a rear end of a bicycle. The auxiliary frame includes two horizontally spaced apart lateral propping members, a plank member, and a supporting frame. The plank member extends between the lateral propping members and is disposed at an end of each of the lateral propping members. The supporting frame is connected to and disposed behind the plank member.