Side Trunk Mounting on Rear Fender for Motorcycle Appearance
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Solution Overview
Problem
Conventional side trunk mounting structures for two-wheeled motor vehicles compromise the external appearance and reduce design freedom due to exposed frame parts when the side trunk is mounted.
Innovation Solution
A side trunk mounting structure where the side trunk is mounted to a rear fender with side trunk mounting holes, utilizing pawls and lower engaging arms that hold the rear fender, allowing the side trunk to be hidden from view, enhancing the vehicle's appearance and maintaining design flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the side trunk is mounted to the rear frame with mounting holes in the top surface, then the mounting structure is simple, but the external appearance is compromised and design freedom is reduced
Solution Approach 1:
The patent moves the mounting holes from the top surface (2D plane) to the side surface of the rear frame, utilizing a different spatial dimension. This allows the mounting mechanism to function effectively while remaining hidden from the primary viewing angle, thus improving external appearance without complicating the mounting structure.
Solution Approach 2:
The patent introduces the rear fender as an intermediary component between the rear frame and the side trunk. The mounting holes are formed in the rear fender rather than directly in the rear frame, allowing the frame to maintain its structural integrity and design freedom while the fender provides the mounting interface that preserves external appearance.
2Reliability
If the side trunk is mounted to the rear frame, then the mounting is secure, but part of the frame becomes exposed and additional design consideration is required
Solution Approach 1:
The rear fender serves as an intermediary that provides the mounting interface for the side trunk. This allows secure mounting through the fender's mounting holes while the fender itself covers the rear frame, eliminating the need for additional design considerations to hide exposed frame parts.
Solution Approach 2:
The rear fender performs multiple functions: it covers the rear frame for aesthetic purposes, provides structural support, and serves as the mounting interface for the side trunk. This multi-functionality resolves the contradiction by integrating the mounting function into an existing component rather than requiring separate mounting structures.
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 solution provides a more attractive external appearance by concealing the side trunk mounting portion, increases rigidity and load-bearing capacity with fiber-reinforced fenders, and enhances saddlebag mounting strength, while preventing gaps and rattling with elastic members.
Implementation Method 1
Each of the pawls which hook into the individual side trunk mounting holes is provided with an elastic member.
Data Source
AI summary
A side trunk mounting structure which enhances the external appearance of a two-wheeled motor vehicle. Mounting holes (113F, 113r) for mounting the side trunk (111) are formed in a rear fender (17). The side trunk mounting holes are located below a rider's seat (15).