Fitting Member with Scrapable Guide for Long Member Removal
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Solution Overview
Problem
Existing relay devices require the replacement of both the fitting member and the long member together, leading to resource loss and difficulty in cutting the joint piece, which complicates the replacement process and hinders mass production due to the need for specialized tools or careful operations to avoid damaging the long member.
Innovation Solution
A fitting member with an insertion portion, a movement restriction portion that can be scraped with a tool, and a guide portion with tapered surfaces to facilitate easy removal of the long member without cutting or damage, allowing the long member to be released from the fitting member using a tool that matches the tapered surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the joint piece is designed with sufficient physical strength to ensure the fit, then the reliability of the connection is improved, but it becomes difficult to cut the joint piece without damaging the long member
Solution Approach 1:
The joint piece is segmented into two distinct parts: a hard portion made of resin that provides connection strength and ensures reliable fitting, and a soft portion made of elastomer that enables easy cutting. This segmentation allows each part to fulfill its specific function without compromising the other.
Solution Approach 2:
The joint piece is constructed as a composite material structure combining resin and elastomer. The resin portion provides rigidity and connection reliability, while the elastomer portion provides flexibility and ease of cutting. This composite approach resolves the contradiction between strength and ease of separation.
2Reliability
If the long member and fitting member are replaced together, then the connection reliability is maintained, but resource loss occurs as both components must be discarded
Solution Approach 1:
The joint piece is segmented into a hard resin portion that remains with the fitting member and a soft elastomer portion that can be removed with the long member. This allows selective replacement where only the necessary components are discarded, reducing resource loss while maintaining connection reliability.
Solution Approach 2:
The design enables recovery and reuse of the hard resin portion of the joint piece along with the fitting member, while only the soft elastomer portion and long member are discarded. This selective discarding approach minimizes resource loss while ensuring reliable connections in the reused components.
3Reliability
If a special jig or careful operation is required to cut the joint piece without damaging the long member, then the long member is protected from damage, but the operation time increases and mass production capacity is reduced
Solution Approach 1:
The joint piece is segmented into hard and soft portions with distinctly different mechanical properties. The soft elastomer portion can be easily cut with ordinary tools without requiring special jigs or careful operations, while the hard resin portion remains intact to maintain connection reliability. This enables rapid replacement operations suitable for mass production.
Solution Approach 2:
The material properties of the joint piece are changed by using different materials (resin and elastomer) with contrasting characteristics. The soft elastomer portion has low cutting resistance enabling easy separation, while the hard resin portion maintains structural integrity. This parameter differentiation allows simple cutting operations that do not require special tools or procedures.
Data Source
AI summary
The present invention relates to a fitting member (1) including an insertion portion (11) that fits a long member (Ia) therein and has a space through which the long member (Ia) is insertable, a movement restriction portion (14) that restricts movement that the long member (Ia) comes out of the insertion portion (11), the movement restriction portion (14) being capable of being scraped with a tool, and a guide portion (16) that guides the tool to the movement restriction portion (14) when the movement restriction portion (14) is scraped with the tool, the fitting member (1) including the movement restriction portion (14) that can be scraped with the tool to release the restriction of the movement that the long member (Ia) comes out of the insertion portion (11).