Hook-Integrated Shroud for Motorcycle Frame Mounting
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Solution Overview
Problem
Conventional saddle-type vehicles face issues with a heavier and more complex frame structure due to extended mounting stays for radiator shrouds, which complicate the mold design and external appearance, necessitating a simpler and more design-friendly solution.
Innovation Solution
An exterior member with a hook member formed on its inner side that engages with the vehicle's frame sections, eliminating the need for additional mounting stays and allowing secure fixation without altering the vehicle's external appearance, utilizing the fuel tank's recess to lock the hook member and ensure maintainability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a dedicated mounting stay is extended from the frame to fix the radiator shroud, then the exterior member can be securely mounted, but the frame becomes heavier and the structure becomes complicated
Solution Approach 1:
The hook member is integrated directly into the radiator shroud body, merging the mounting function with the exterior member itself. This eliminates the need for separate dedicated mounting stays, simplifying the frame structure while maintaining secure mounting through the hook engagement with frame grooves
Solution Approach 2:
The hook member serves multiple functions: it provides mounting security by engaging with the frame, acts as an integrated attachment mechanism, and eliminates the need for additional dedicated mounting components. This multi-functional element resolves the contradiction by providing reliable mounting without adding structural complexity
2Adaptability or versatility
If the mounting stay and radiator shroud are spaced apart in vehicle width direction, then mounting flexibility is improved, but the fastening portion must be made deeper complicating the mold
Solution Approach 1:
Instead of extending the mounting stay outward from the frame and fastening the shroud to it, the solution inverts the approach by integrating the hook member directly into the shroud and engaging it with grooves formed on the frame. This reversal eliminates the need for deep fastening portions and complex molding while maintaining mounting flexibility
3Reliability
If the fastening portion of the shroud is enlarged to accommodate the mounting stay, then mounting stability is improved, but a large hole appears in the external appearance of the vehicle
Solution Approach 1:
The hook member is nested within the shroud body structure, with the hook portion formed as an integrated feature of the shroud. The hook engages with grooves on the frame, allowing mounting stability to be achieved without creating large external holes, thus preserving the vehicle's external appearance
Data Source
AI summary
An exterior member such as a shroud, for a saddle-type vehicle including a head pipe and a main frame extending rearward from the head pipe, has a hook member formed on an inner side thereof. The hook member is configured for being engaged onto the main frame such that the exterior member is supported by the main frame. The exterior member is locked to the vehicle by engaging the hook member onto the main frame, thereby supporting the exterior member on the main frame. Such arrangement enables the exterior member to be affixed to the frame with a simple structure, without detrimentally affecting the external appearance of the vehicle.