Motor Pump Junction Box Design to Reduce Assembly Complexity
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Solution Overview
Problem
The existing pump components face difficulties in convenient assembly and production due to an unreasonable arrangement of the electric connecting piece, which leads to increased production costs and complexity, especially when the electric connecting piece and junction box are formed integrally with conductive contact pins.
Innovation Solution
A pump component design where the electric connecting piece is arranged in a containing box on the side portion of the tubular shell component, with a slot notch and side socket allowing for easy connection to the motor driving circuit board, eliminating the need for conductive contact pins and simplifying the assembly process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the electric connecting piece and junction box are formed integrally with conductive contact pins, then the structural integrity is improved, but the assembly complexity and production difficulty increase
Solution Approach 1:
The patent divides the electric connecting piece and junction box into separate components. The electric connecting piece is positioned in a dedicated cavity of the junction box rather than being integrally formed, allowing independent manufacturing and assembly of each component while maintaining stable electrical connections through designed contact interfaces.
Solution Approach 2:
The conductive contact pins are extracted from the integral structure and positioned as separate elements within the junction box cavity. This extraction allows the electric connecting piece to be assembled independently into the junction box, simplifying the overall assembly process while maintaining structural integrity through dedicated mounting features.
2Ease of operation
If the electric connecting piece is arranged on the side portion of the junction box, then the wiring convenience is improved, but the manufacturing complexity increases due to additional positioning requirements
Solution Approach 1:
The junction box is pre-designed with a dedicated cavity and positioning structures (such as positioning grooves or ribs) that guide the electric connecting piece into the correct position during assembly. This preliminary preparation of the junction box structure eliminates the need for complex real-time alignment during assembly, maintaining manufacturing simplicity while achieving convenient wiring access on the side portion.
3Reliability
If conductive contact pins are integrated in the junction box, then the electrical connection stability is improved, but the processing and production convenience deteriorates
Solution Approach 1:
The electrical connection system is segmented into the junction box structure and the electric connecting piece as separate components. The electric connecting piece contains the conductive elements and is designed to mate with corresponding contacts in the junction box cavity, allowing each component to be manufactured independently with standard processes while ensuring stable electrical connections through the designed interface.
Data Source
AI summary
A pump is provided with a motor arranged in a stator case, wherein a junction box is arranged at one axial end of the stator case, the junction box is provided with a tubular shell component, the first axial end of the tubular shell component is placed at the axial end of the stator case, the opposite second axial end of the tubular shell component is sealed through at least one cover piece, an operation display circuit board and a motor driving circuit board are arranged in the tubular shell component. The tubular shell component and the containing box are not provided with conductive contact pins.