Assembly Type Terminal for Fuel Pump Flange Manufacturing
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Solution Overview
Problem
The existing methods for manufacturing fuel pump flanges require additional processes and equipment, leading to increased defective rates due to the need for structural deformation of molds and potential pushing of units during injection-molding, especially when arranging multiple power supply terminals in limited areas.
Innovation Solution
An assembly type terminal for fuel pumps, featuring coupling bodies and a coupling member with specific geometric features such as insertion holes, insertion portions, interval maintaining portions, sliding portions, and coupling auxiliary portions, allows for the coupling of power supply terminals into a single unit, reducing the need for multiple mold movements and preventing unit pushing during injection-molding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If multiple power supply terminals are arranged in two rows and fixed by separate synthetic resins, then the number of power supply terminals can be increased to meet higher output requirements, but additional processes and equipment are required, the mold must be structurally deformed, and the defective rate increases due to units being pushed during injection-molding
Solution Approach 1:
The patent combines multiple separate coupling bodies into a single integrated coupling body that can hold multiple power supply terminals. This merging eliminates the need for separate fixing processes for each unit and allows all terminals to be installed in one injection-molding cycle, thereby reducing device complexity while maintaining the ability to accommodate multiple terminals
Solution Approach 2:
The coupling body is designed with pre-formed cavities and structures that accommodate multiple power supply terminals before the injection-molding process. This preliminary arrangement eliminates the need for structural deformation of the mold during production and prevents units from being pushed during injection, as the coupling body already has the correct geometry to hold all terminals in place
2Reliability
If separate fixing processes are used for each coupling body unit, then each unit can be securely fixed to the mold, but the process time increases and productivity decreases
Solution Approach 1:
Multiple coupling body functions are merged into a single integrated coupling body that can securely hold multiple power supply terminals simultaneously. This allows all terminals to be fixed in one injection-molding operation rather than requiring separate fixing processes for each unit, thereby maintaining reliability while significantly improving productivity
Solution Approach 2:
The injection-molding process is made continuous by using a single coupling body that accommodates all power supply terminals. The useful action of fixing terminals to the mold continues in one uninterrupted operation rather than being interrupted by multiple separate fixing processes, thus maintaining reliability while enhancing productivity
3Ease of manufacture
If existing molds are used without structural deformation, then manufacturing cost and complexity are reduced, but the ability to accommodate multiple power supply terminals in limited area is compromised
Solution Approach 1:
The coupling body utilizes three-dimensional space efficiently by arranging power supply terminals in multiple levels and orientations within the limited flange area. This dimensional arrangement allows multiple terminals to be accommodated in the available space without requiring mold structural deformation, thus maintaining ease of manufacture while maximizing area utilization
Data Source
AI summary
Provided are an assembly type terminal for a fuel pump capable of decreasing a process additionally required at the time of injection-molding a flange using a separation type terminal according to the related art and preventing a defect of a product that may occur at the time of injection-molding the flange, and a method of manufacturing a fuel pump flange using the same. The assembly type terminal for a fuel pump includes: a plurality of power supply terminals; a plurality of coupling bodies 100 and 200 coupling one or more power supply terminals to each other; and a coupling member 300 formed in the coupling bodies and coupling the plurality of coupling bodies 100 and 200 to each other, wherein the plurality of coupling bodies are spaced apart from each other and are coupled to each other by the coupling member.