Composite Molded Component Overlapping Rib and Through Hole Design
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Solution Overview
Problem
There is a demand for smaller composite molded components, such as wheel speed sensors, which require a balance between minimizing size and ensuring structural integrity and fitment.
Innovation Solution
A composite molded component design featuring a primary molded portion with through holes and annular ribs, where portions of the through holes and annular ribs overlap in the lengthwise direction of a secondary molded portion, allowing for a shorter secondary molded portion and thus a smaller overall component.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the secondary molded portion is made longer to ensure structural integrity and proper coverage, then the coverage and protection are improved, but the overall size of the composite molded component increases
Solution Approach 1:
The patent merges the functions of the through hole portion (for positioning and fitment) and the annular rib portion (for structural support and bonding) into an overlapping configuration. This integration allows the secondary molded portion to be shortened while maintaining both positioning accuracy and structural integrity, resolving the contradiction between compact size and reliable coverage.
Solution Approach 2:
The patent utilizes the radial dimension by extending the annular rib portion outward from the through hole portion. This dimensional approach allows the rib to provide structural support and bonding surface area without increasing the axial length of the component, thereby reducing overall size while maintaining structural integrity.
2Stability of the object's composition
If rib portions are added to improve fit between holder portion and resin molded portion, then the fitment and stability are improved, but the space requirement and component size increase
Solution Approach 1:
The annular rib portion is nested within the secondary molded portion, with the rib being formed as an integral part of the molded structure. This nesting allows the rib to provide fitment stability without requiring additional external space, as the rib is contained within the overall component geometry.
Solution Approach 2:
The rib portion is strategically placed only where needed - at the interface between the holder portion and resin molded portion - to provide localized fitment improvement. This localized approach enhances stability without requiring ribs throughout the entire component, thereby minimizing space requirements.
Data Source
AI summary
This composite molded component includes an internal component, a primary molded portion that covers the internal component, and a secondary molded portion that covers the primary molded portion. The primary molded portion of the composite molded component includes a through hole portion that penetrates to the internal component, and an annular rib portion that protrudes toward the secondary molded portion so as to surround a positioning portion of the primary molded portion. At least a portion of the through hole portion and at least a portion of the annular rib portion are overlapped with each other in the lengthwise direction of the secondary molded portion.