Fuel Line Quick Connector Structure for Leak-Safe Compact Coupling
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Solution Overview
Problem
Existing quick connectors for fuel supply systems, particularly for low-pressure lines, have complex structures that increase manufacturing costs and size, making them difficult to manufacture and use in compact spaces while also being inefficient in preventing fuel leakage.
Innovation Solution
A simple quick connector design featuring a housing with an insertion recess and a first fixing part that includes an arrest portion, insertion guide, and lever, along with an elastic member and O-ring, allowing for easy coupling and separation while preventing fuel leakage, suitable for low-pressure fuel supply lines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a complicated structure is used in quick connector, then fuel leakage prevention is improved, but device complexity increases and manufacturing cost increases
Solution Approach 1:
The patent extracts and eliminates unnecessary components from the quick connector structure. By removing redundant parts that were previously used to prevent fuel leakage, the design achieves a simplified structure while maintaining reliability through the essential components: housing, insertion recess, communication hole, and fixing part with arrest portion and insertion guide.
Solution Approach 2:
The quick connector is divided into distinct functional segments: the housing containing the insertion recess and communication hole, and the separate fixing part with arrest portion and insertion guide. This segmentation allows each component to perform its specific function efficiently, reducing overall complexity while ensuring fuel leakage prevention through proper functional division.
2Reliability
If a complicated structure is used in quick connector, then fuel leakage prevention is improved, but manufacturing cost increases
Solution Approach 1:
The patent removes unnecessary components and design elements that increase manufacturing cost. The simplified structure with fewer parts reduces material requirements, assembly steps, and production complexity, directly lowering manufacturing costs while maintaining fuel leakage prevention capabilities through the essential fixing mechanism.
3Reliability
If a large size quick connector is used, then fuel leakage prevention is improved, but ease of operation deteriorates in narrow spaces
Solution Approach 1:
The patent eliminates unnecessary structural elements that increase the size of the quick connector. By retaining only the essential components needed for fuel leakage prevention, the design achieves a compact form factor that is easy to operate in narrow spaces while maintaining reliability through the proper functioning of the arrest portion and insertion guide.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The connector has a reliable coupling structure that reduces manufacturing costs, is easily manufactured, and can be used in narrow spaces without fuel leakage, making it suitable for low-pressure fuel supply lines in vehicles.
Implementation Method 1
the first fixing part being elastically deformable
Data Source
AI summary
A quick connector includes a housing having an insertion recess and a communication hole communicating with the insertion recess and formed in a direction perpendicular to the insertion recess, and a first fixing part having an arrest portion and an insertion guide protruding from the arrest portion in a direction toward an entrance of the insertion recess, wherein the arrest portion is inserted into the communication hole so that a lower end of the arrest portion is disposed in a position corresponding to the insertion recess, the first fixing part being coupled to the housing, so that the quick connector may be applied to a low-pressure side line in a fuel supply line of a vehicle, and since the quick connector has a simple structure, the quick connector may be easily manufactured and may be easily coupled and separated.