Removable Bicycle Fender With Hook And Loop Straps
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Solution Overview
Problem
Existing bicycle rear fenders lack a universal attachment system that can securely fit various bicycle frame structures, leading to instability and difficulty in installation.
Innovation Solution
A rear fender design featuring three removably attached straps with hook and loop fasteners, including a seat attachment strap and two frame attachment straps, allowing for secure and tool-free installation on different bicycle frames by coupling to the seat tube and seat stays.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional rigid attachment methods are used, then stability is improved, but ease of installation and versatility deteriorate
Solution Approach 1:
The attachment system is divided into multiple independent straps (seat attachment strap, first frame attachment strap, second frame attachment strap) that can be installed and adjusted separately. Each strap functions as an independent attachment element, allowing for flexible installation while maintaining overall system stability.
Solution Approach 2:
The attachment system transitions from rigid fixed attachment to dynamic adjustable attachment using hook and loop fasteners. These fasteners allow the straps to be easily attached and detached while providing secure holding when engaged, enabling both ease of installation and attachment stability.
2Adaptability or versatility
If universal attachment is implemented, then adaptability is improved, but device complexity increases
Solution Approach 1:
The attachment straps are designed with universal hook and loop fastener mechanisms that can accommodate various bicycle frame types and geometries. The same basic strap design can be used across different frame configurations, achieving universality without requiring multiple specialized attachment systems.
Solution Approach 2:
The attachment system achieves versatility through adjustable parameters including strap length, attachment point positions, and fastener engagement strength. By varying these parameters, the same basic attachment mechanism can adapt to different frame sizes and geometries without increasing fundamental system complexity.
3Reliability
If multiple attachment points are used, then stability is improved, but ease of operation deteriorates
Solution Approach 1:
The multi-point attachment system is segmented into independent strap units, each with its own hook and loop fastener. This segmentation allows each attachment point to be installed and adjusted independently, maintaining ease of operation even with multiple attachment points providing enhanced stability.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The design provides universal compatibility and secure attachment to various bicycle frames, ensuring both longitudinal and lateral stability, and allows for easy installation and removal without tools.
Implementation Method 1
The seat attachment strap is a hook and loop fastener
Implementation Method 2
The first frame attachment strap is a hook and loop fastener. The second frame attachment strap is a hook and loop fastener
Data Source
AI summary
A rear fender for a bicycle includes a fender body having a first end, and a second end arranged opposite to the first end; a seat attachment strap coupled to the first end of the fender body; a first frame attachment strap coupled to a first side of the fender body at a first fender location between the first end and the second end; and a second frame attachment strap coupled to a second side of the fender body, opposite to the first side, at a second fender location between the first end and the second end. The fender body defines a curved profile as the fender body extends from the first end to the second end.