Fuel Supply Device Neck Integrated Component Engagement
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing fuel supply devices risk damage to the retainer and filler pipe due to the fueling gun being stuck or coming into contact with the retainer during insertion, leading to potential detachment of the retainer from the filler pipe.
Innovation Solution
A fuel supply device design featuring a filler neck body and a neck integrated component that engage on the fuel tank side, away from the opening, with features like grooves, pawls, and annular projections to secure the neck integrated component to the filler neck body, reducing the likelihood of damage from the fueling gun's insertion force.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the retainer is mounted to the vicinity of the filler port to guide the fueling gun, then the fueling gun insertion is facilitated, but the mounting part of the retainer may be damaged or the retainer may come off due to contact with the fueling gun during insertion
Solution Approach 1:
The invention extracts the problematic retainer component from the filler pipe structure and replaces it with a nozzle guide formed integrally with the filler neck body. This eliminates the separate mounting connection that was susceptible to damage, while maintaining the guidance function for the fueling gun through the integral nozzle guide structure.
Solution Approach 2:
The invention merges the nozzle guide function with the filler neck body by forming the nozzle guide integrally with the filler neck body. This combination eliminates the separate retainer component and its vulnerable mounting connection, creating a unified structure that maintains guidance functionality while improving reliability.
2Ease of operation
If the retainer is positioned near the opening to guide fueling gun insertion, then insertion alignment is improved, but the engagement part is more likely to receive load and be damaged during insertion
Solution Approach 1:
The nozzle guide is merged with the filler neck body as an integral structure, eliminating the separate engagement part that was susceptible to loading. The integral design ensures that guidance forces are distributed throughout the filler neck body structure rather than concentrated at a weak mounting connection point.
Solution Approach 2:
The filler neck body is designed with a segmented structure including a cylindrical portion and a narrowed portion, with the nozzle guide formed in the cylindrical portion. This segmentation allows the nozzle guide to be positioned optimally for alignment while the overall filler neck body structure provides the strength to handle insertion loads.
Data Source
AI summary
There is provided a fuel supply device comprising a filler neck body provided in a tubular shape to include an opening which a fueling gun is inserted in and a connection port formed on a fuel tank-side end of the filler neck body and configured to form a fuel passage; and a neck integrated component located on an inner side of the filler neck body and configured to form an insertion passage. The neck integrated component is arranged to engage with inside of the filler neck body on a fuel tank side or with a fuel tank-side end of the filler neck body. This configuration suppresses a fueling gun from being stuck during insertion and reduces the possibility that the engagement part of the filler neck body and the neck integrated component is damaged.