Quick Pipe Connector Sleeve Structure for High-Pressure Leak Prevention
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Solution Overview
Problem
Existing quick pipe connectors are prone to leaking under high pressure due to detachment of components such as the barrel-type casing and O-shaped sealing ring, leading to structural unreliability.
Innovation Solution
A quick pipe connector design featuring a connector body with a shoulder to retain a sealing ring, a securing ring, and an engaging member with catching claws, along with a coupling sleeve that securely biases against the sealing and securing rings, ensuring the pipe remains connected even under high pressure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a barrel-type casing is used to house the sealing components, then the connector can be assembled, but under high pressure the casing may detach causing leakage
Solution Approach 1:
The connector is divided into distinct functional segments: the connector body, the coupling sleeve, the securing ring, and the engaging member. Each segment performs a specific function - the coupling sleeve houses the sealing components, the securing ring provides additional retention, and the engaging member with catching claws prevents detachment. This segmentation allows each component to be optimized for its specific function while working together to solve the detachment problem under pressure.
Solution Approach 2:
The design incorporates preliminary retention actions through multiple mechanisms before pressure is applied. The shoulder on the connector body preliminarily positions the coupling sleeve, the securing ring preliminarily secures the sealing components, and the engaging member with catching claws preliminarily prevents detachment. These preliminary actions ensure that when high pressure is applied, the components are already in a secured state and less likely to detach.
2Ease of operation
If the coupling sleeve is loosely fitted for easy assembly, then assembly is simple, but the sealing ring and securing ring may detach under pressure
Solution Approach 1:
The coupling sleeve exhibits local quality variations: it has a loose fit in the assembly direction to allow easy insertion, but features a shouldered contour and interaction with the securing ring that creates a tight, locked fit in the axial direction to prevent detachment under pressure. The engaging member with catching claws provides localized retention at specific points along the coupling sleeve, ensuring secure component retention while maintaining ease of assembly.
3Reliability
If multiple retention components are added to prevent detachment, then structural reliability improves, but device complexity increases
Solution Approach 1:
The design merges multiple retention functions into an integrated assembly. The coupling sleeve, securing ring, and engaging member work together as a unified retention system rather than separate independent components. The shouldered contour of the coupling sleeve merges with the connector body shoulder to provide positional retention, while the catching claws of the engaging member merge with the coupling sleeve to provide mechanical interlocking. This merging reduces the need for additional separate retention components while maintaining high reliability.
Data Source
AI summary
A quick pipe connector includes a connector body, a sealing ring, a securing ring, an engaging member and a coupling sleeve. The engaging member is arranged to bias against the securing ring and includes a plurality of catching claws. The coupling sleeve includes a main sleeve member and an extension sleeve extending from the main sleeve member to engage with the connector body in such a manner that when a pipe is inserted in the connector body, the extension sleeve, the sealing ring, the securing ring and the engaging member are securely biased and retained between the connector body and the main sleeve. The catching claws are arranged to securely bias against an external surface of the pipe while the extension sleeve is arranged to bias against an external contour of a connecting portion of the connector body.