Housing Type Pipe Joint With Rotational Positioning
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Solution Overview
Problem
Existing housing type pipe joints require separate preparations for movable and fixed connections, leading to increased man-hours and storage space needs, and can suffer from inefficient workmanship due to the need for additional members and correct orientation of plugs.
Innovation Solution
A housing type pipe joint design featuring a pair of housings with semicircular bodies, radially extending flange portions, and positioning members that allow for diagonal fitting portions to adjust their distance by rotation, enabling both movable and fixed connections without additional members, using colored areas and indication parts for correct orientation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate housings are prepared for movable and fixed connections, then connection reliability is improved, but device complexity and storage requirements increase
Solution Approach 1:
The patent applies universality by designing a single housing type that can perform both movable and fixed connection functions. The housing includes fitting portions that can engage with pipe attachment portions in different configurations, allowing one housing design to replace multiple specialized housings while maintaining connection reliability for both connection types.
Solution Approach 2:
The patent applies dynamics by enabling the fitting portions to change their engagement state dynamically. The fitting portions can transition between loosely fitted (allowing movement) and tightly fitted (restricting movement) states, allowing the same housing structure to adapt to different connection requirements without changing the housing type itself.
2Reliability
If additional members like plugs are used to achieve fixed connection, then connection reliability is improved, but ease of operation deteriorates due to orientation requirements
Solution Approach 1:
The patent applies the extraction principle by removing the additional plug member from the system. Instead of requiring a separate plug to achieve fixed connection, the fitting portions themselves are designed to directly engage with the pipe attachment portions in a tightly fitted manner, eliminating the need for orientation-critical additional components and simplifying the installation process.
3Adaptability or versatility
If pawl portions are loosely fitted in grooves for movable connection, then adaptability is improved, but connection strength decreases
Solution Approach 1:
The patent applies dynamics by enabling the fitting portions to change their engagement state dynamically. The fitting portions can transition between loosely fitted (allowing movement) and tightly fitted (restricting movement) states, allowing the same housing structure to adapt to different connection requirements without changing the housing type itself.
Data Source
AI summary
A housing pipe joint (1) for connecting a pair of pipes comprising: a pair of housings (3) each including a housing body (4) and a flange portion (5); fitting portions (4a) located in parallel on an inner surface of the housing body to fit with the pipes (P), each fitting portion including one stepped section (4a3) angled diagonally relative to the center axis line (C); and a positioning member (6) on opposed surfaces of the flange portion, the positioning member engaging with the other positioning member to position the housings at a first or a second position when one housing is rotated on a plane about a symmetric point (Sy); at the first position the distance between the opposed fitting portions is the closest and the pipes are movably coupled; and at the second position the distance is the largest and the pipes are fixedly coupled to the housings.