Piping Connector Anti-Loosening Structure for Cap Nut and O-Ring Retention
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Solution Overview
Problem
Conventional piping connectors can inadvertently loosen or lock cap nuts due to external forces like vibration or impact, leading to improper assembly and potential removal of O-rings, which compromises airtightness.
Innovation Solution
The connector incorporates an anti-loosening mechanism with a stopped protrusion on the cap nut and stopper protrusions/ribs on the body, preventing the cap nut from being loosened or locked by external forces not deliberately applied, and an insert ring to secure the O-ring in place.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the cap nut is completely loosened to prevent separation, then the cap nut can be easily removed, but the cap nut may be accidentally locked by external force before use
Solution Approach 1:
The patent applies preliminary anti-action by providing a stopper protrusion that prevents the cap nut from being completely loosened. This preliminary restriction counteracts the potential harmful effect of accidental locking while still allowing intentional removal when needed, thus resolving the contradiction between ease of operation and reliability
2Reliability
If the cap nut is prevented from loosening completely, then accidental locking is reduced, but the cap nut cannot be removed when needed
Solution Approach 1:
The patent applies dynamics by creating a system where the cap nut's movement is dynamically controlled - it cannot move beyond the stopper protrusion in the loosening direction, but can be intentionally removed by applying sufficient force to overcome the stopper. This dynamic control resolves the contradiction between preventing accidental loosening and allowing intentional removal
3Reliability
If the cap nut is locked to prevent loosening, then the connection is secure, but the O-ring may be removed due to erroneous assembly
Solution Approach 1:
The patent applies preliminary anti-action by providing a stopper protrusion that prevents the cap nut from being completely loosened. This preliminary restriction counteracts the potential harmful effect of accidental locking while still allowing intentional removal when needed, thus resolving the contradiction between ease of operation and reliability
Data Source
AI summary
A connector is provided for piping which may prevent a cap nut part from being automatically loosened or locked due to external force, such as an external vibration, a bump, or a shock, that i not deliberately applied, before a connector product is used, and in addition, may prevent an O-ring from being separated from the inside of the connector due to pressing caused by erroneous assembly in a pipe fastening process. To this end, the connector for piping comprises: a body part of a pipe body; the cap nut part; a collet part; and an anti-loosening part which prevents the cap nut part from being loosened or locked due to external force that is not deliberately applied.