Insert Nut Recess Structure for Cutting Debris Containment
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Solution Overview
Problem
Existing insert nuts generate debris when press-fitted into resin molded articles, which can contaminate clean environments such as semiconductor wafer processing equipment, limiting their use in such devices.
Innovation Solution
The insert nut features a cylindrical design with external threads, recesses to accommodate debris, and optional tapered portions and flanges to prevent debris from adhering to the embedding target, ensuring adequate debris management and secure fitting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the insert nut is press-fitted into the resin molded article in a threaded manner, then the insert nut can be securely embedded in the resin product, but debris is generated during the press-fitting process
Solution Approach 1:
The patent extracts the harmful debris from the gap between the insert nut and resin molded article by providing recesses on the outer surface of the insert nut. These recesses capture and contain the debris generated during press-fitting, preventing it from remaining in the gap where it could cause contamination or interfere with the embedding target.
Solution Approach 2:
The patent converts the harmful debris into a contained element by designing recesses that specifically accommodate the debris. Instead of debris remaining as a contaminant in the gap, it is transformed into a contained feature within the recesses, thereby eliminating its harmful effects while maintaining the secure embedding function.
2Device complexity
If debris remains in the gap between the insert nut and resin molded article, then the embedding structure is simple, but debris may appear on the embedding target and hinder the desired processing
Solution Approach 1:
The patent extracts debris from the harmful gap region by providing recesses on the outer surface of the insert nut. These recesses serve as dedicated containment zones that capture debris during press-fitting, preventing it from appearing on the embedding target such as semiconductor wafers.
Solution Approach 2:
The recesses act as an intermediary structure between the insert nut and the embedding target. They serve as a buffer zone that intercepts and contains debris, preventing direct contact between debris and the embedding target, thereby protecting the target from contamination.
Data Source
AI summary
[Problem to be Solved]To provide an insert nut that adequately addresses an issue of cutting debris.[Solution]An insert nut in cylindrical shape, which has an outer surface portion 150 formed with a screw portion and multiple recesses 160 that accommodate cutting debris generated when an insert nut body is screwed into an embedded target through the screw section in a threaded manner.