Double-Locking Quick Connector for Leak-Resistant Pipe Joints
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Solution Overview
Problem
Current quick connection devices in automotive fuel and new energy pipeline systems rely on single locking mechanisms, which are prone to unlocking due to external forces, leading to leakage risks and instability, with axial displacement issues and difficulty in verifying proper installation.
Innovation Solution
An error-proof double-locking quick connector design featuring a male plug and housing with specific cavity structures, locking blocks, and positioning rods that ensure secure engagement and easy disassembly, allowing visual verification of installation status through open clamping strips and positioning rods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single locking mechanism is used in quick connection devices, then the device complexity is reduced, but the reliability is compromised due to high risk of unlocking from external forces
Solution Approach 1:
The locking mechanism is segmented into two independent locking blocks (first locking block and second locking block) that operate separately but work together to secure the male plug. Each locking block can be engaged or disengaged independently, providing redundant protection against unlocking while maintaining manageable complexity through modular design
Solution Approach 2:
The design incorporates a positioning block with pre-formed clamping grooves and open grooves that guide the locking blocks into their proper positions. The clamping strips are pre-positioned to engage with these grooves, ensuring that the locking mechanism is properly prepared and cushioned against potential unlocking before actual external forces are applied
2Object-affected harmful factors
If a double locking mechanism is implemented to improve reliability, then the resistance to external forces is enhanced, but the device complexity increases
Solution Approach 1:
The two locking blocks are merged into a single integrated positioning block structure that houses both locking mechanisms. The clamping strips from both locking blocks work together with the unified positioning block, combining multiple functions into a single component to reduce overall device complexity while maintaining double-locking reliability
Solution Approach 2:
The positioning block serves multiple functions: it houses both locking blocks, provides clamping grooves for engagement, offers open grooves for disengagement, and guides the locking strips. This multi-functional design reduces the need for separate components, thereby reducing complexity while achieving enhanced resistance to external forces
3Reliability
If locking mechanisms are made more secure to prevent unlocking, then the reliability is improved, but the ease of operation for disassembly is reduced
Solution Approach 1:
The locking mechanism transitions from a static locked state to a dynamic unlocked state through the application of external force. The clamping strips are designed to be elastic and movable, allowing them to be firmly engaged during normal operation for reliability, but easily displaced when disassembly force is applied, facilitating convenient disassembly
Solution Approach 2:
The open groove acts as an intermediary feature that facilitates disassembly. When force is applied to the locking blocks, they move along the open groove path, serving as a guided transition zone between the locked and unlocked states. This intermediary structure makes disassembly easier by providing a clear disengagement path without compromising the secure locked state
4Ease of operation
If the locking mechanism is simplified for easy assembly and disassembly, then the ease of operation is improved, but the reliability is reduced due to potential locking instability
Solution Approach 1:
The clamping strips are pre-positioned and pre-oriented during assembly to automatically engage with the clamping grooves of the positioning block when the male plug is inserted. This preliminary positioning ensures that the locking action occurs naturally during the assembly process without requiring additional steps, maintaining ease of operation while ensuring reliable engagement through the pre-designed geometric fit
Data Source
AI summary
An error-proof double-locking quick connector is provided, which includes a male plug provided with a boss and a housing, a cavity structure is provided in the housing, and the cavity structure is provided with a first insertion hole, a second insertion hole, a first limiting hole and a second limiting hole, and a positioning block is also arranged in the cavity structure. A locking device is inserted into the first insertion hole, a positioning card is inserted into the second insertion hole. In the present disclosure, a locker and a positioning card are connected and fixed on the housing, which has a double protection effect on the fixing of the male plug, and is also convenient for observing an installation state, avoiding the occurrence of installation falling off, the structure is simple, and it is easy to disassemble.