Hollow Frame Rib Filter Mounting for Motorcycle Maintenance
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Solution Overview
Problem
Conventional saddle-type vehicles with monocoque structures require fastener members like bolts for installing and removing air cleaner filter elements, necessitating a working space and time for maintenance.
Innovation Solution
A frame structure with a hollow main frame featuring a ribbed inner surface that supports the filter element without fasteners, allowing easy installation and removal through a rib engagement system, including a first rib surrounding the filter element, a second rib engaging it, and a third rib providing additional support, along with a water drain hole and recessed space for dust collection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If fastener members such as bolts are used to fix the filter element, then the filter element can be securely fixed in position, but a working space is required for inserting tools and maintenance time is increased
Solution Approach 1:
The patent removes fastener members (bolts, nuts, screws) from the filter element fixing system. Instead, the filter element is directly supported by the rib structure formed in the main frame, eliminating the need for separate fastening components and reducing maintenance time while maintaining secure fixation.
Solution Approach 2:
The patent integrates the fixing function into the main frame structure itself by forming ribs directly in the casting. The rib structure serves both as structural support and as the fixing mechanism for the filter element, combining multiple functions into a single integrated component.
2Reliability
If fastener members such as bolts are used to fix the filter element, then the filter element can be securely fixed in position, but the device complexity increases due to additional components
Solution Approach 1:
The patent extracts and removes fastener members from the assembly. The filter element fixing system no longer includes bolts, nuts, or other fastening components, simplifying the overall device structure while maintaining secure fixation through the integrated rib support.
Solution Approach 2:
The fixing function is merged with the main frame structure. The ribs formed in the main frame serve dual purposes: providing structural integrity and acting as the fixing mechanism for the filter element, thereby reducing the number of separate components.
3Strength
If the filter element is supported by multiple ribs, then the structural integrity and support are improved, but the manufacturing complexity increases
Solution Approach 1:
Multiple ribs are merged into a single integrated structure formed by one casting process. The first rib, second rib, and third rib are all formed simultaneously as part of the main frame, providing multiple support points for the filter element without requiring separate manufacturing steps or assembly operations.
Data Source
AI summary
A hollow main frame extends rearwardly from a head pipe. An air cleaner includes a filter element disposed in the main frame forming a dirty side and a clean side. The main frame includes a front opening for introducing intake air. The main frame includes an inner wall surface having a first rib extending peripherally and projecting inwardly into the space in the main frame. A second rib is disposed upstream or downstream of the first rib with respect to an intake air flow and projects inwardly into the space in the main frame. The filter element has an engaging member extending substantially along the inner wall surface and engageable with the second rib. The first rib peripherally surrounds the filter element to provide a division wall with the second rib engaging the filter element to support the filter element.


