Electric Water Pump Terminal Integration for Simplified Manufacturing
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Solution Overview
Problem
The existing manufacturing process for electric water pumps is complex and inefficient, requiring double insert-injection-molding for external and internal terminals, which complicates production and maintenance, and introduces foreign materials, making it difficult to debug or repair the control substrate.
Innovation Solution
The electric water pump design integrates external and internal terminals through a single insert-injection-molding process with the acceptor, allowing for a simplified manufacturing process and improved maintenance by eliminating the need for separate electrical conductors in the cover, enabling easier assembly and maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If external terminal and internal terminal are manufactured through separate insert-injection-molding processes, then electrical connection is achieved, but manufacturing complexity increases and productivity decreases
Solution Approach 1:
The patent combines the external terminal and internal terminal into a single integrated terminal structure that penetrates through the pump housing and acceptor. This merging of two separate electrical connection components into one unified component eliminates the need for separate insert-injection-molding processes, thereby reducing manufacturing complexity and improving productivity while maintaining reliable electrical connection between the motor and control substrate.
2Reliability
If external terminal penetrates through cover to connect control substrate and motor, then electrical connection is established, but foreign material may be introduced into gap between terminal and cover
Solution Approach 1:
The patent integrates the terminal structure with the acceptor component, eliminating the gap between the terminal and cover that existed in the prior art. The terminal now penetrates through the acceptor which is seamlessly integrated with the pump housing, rather than through a separate cover. This merging eliminates the space where foreign materials could be introduced, while still maintaining the necessary electrical connection between the motor and control substrate.
3Reliability
If external terminal penetrates through cover, then electrical connection is achieved, but maintenance and debugging require disassembly of cover and electrical connection
Solution Approach 1:
The patent integrates the terminal structure with the acceptor component, creating a unified assembly that eliminates the need for separate cover disassembly during maintenance. The terminal now penetrates through the acceptor which is integrated with the pump housing, allowing for easier access and maintenance of the electrical connection between the motor and control substrate without requiring complex disassembly procedures.
4Reliability
If double insert-injection-molding is performed for external and internal terminals, then electrical connection is established, but manufacturing process becomes complex and economical efficiency decreases
Solution Approach 1:
The patent combines the external terminal and internal terminal into a single integrated terminal structure that can be manufactured through a single insert-injection-molding process. This unified terminal penetrates through both the pump housing and acceptor in one piece, eliminating the need for two separate molding operations. The integration reduces manufacturing complexity, improves economical efficiency, while ensuring reliable electrical connection between the motor and control substrate.
Data Source
AI summary
An electric water pump of which productivity, maintainability, and use convenience may be improved by simplifying a production process through a change in a structure, and a method of manufacturing the same. The electric water pump includes: a pump housing accepting a motor therein; an acceptor having a cylindrical shape of which one side is opened and formed at one side of the pump housing; a control substrate installed in the acceptor; an external terminal formed of a conductor and penetrating through the acceptor to electrically connect the control substrate to an external power supply; and an internal terminal formed of a conductor and penetrating through the pump housing and the acceptor to electrically connect the motor and the control substrate to each other.