Welded Conduction Terminal Structure for Vibration-Stable Motor Pumps
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Solution Overview
Problem
Existing motors face issues with insufficient contact between the stator core and the conduction terminal due to vibration, leading to potential contact failure and noise generation.
Innovation Solution
A conduction terminal is designed with a core connection part fixed to the stator core by welding, featuring a bent part abutting the stator core for secure fixation, and a holding groove with positioning ribs for precise alignment, ensuring stable electrical connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the conduction terminal is contacted with the stator core only by utilizing elasticity, then the structure is simple, but contact failure occurs due to vibration and insufficient contact
Solution Approach 1:
The conduction terminal is divided into multiple functional parts: an elastic contact portion for initial contact, a reinforcement portion for structural support, and a fixation portion for secure attachment. This segmentation allows each part to perform its specific function optimally, resolving the contradiction between simple structure and reliable contact.
Solution Approach 2:
The conduction terminal combines materials with different properties: the elastic contact portion uses material with high elasticity for reliable contact under vibration, while the fixation portion uses material suitable for welding or mechanical fastening. This composite approach ensures both structural simplicity and contact reliability.
2Reliability
If the conduction terminal is designed with complex fixation structures, then contact reliability is improved, but device complexity increases
Solution Approach 1:
The conduction terminal merges multiple functions into a single integrated component: the elastic contact function, the structural reinforcement function, and the fixation function are all combined in one piece. This reduces the number of separate parts and assembly steps while ensuring reliable contact, thus improving reliability without significantly increasing device complexity.
Solution Approach 2:
The conduction terminal incorporates a dynamic elastic contact portion that can deform and adapt to vibrations during motor operation. This dynamic capability ensures continuous reliable contact without requiring complex active control mechanisms or multiple adjustment components, maintaining structural simplicity while improving contact reliability.
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 solution ensures reliable conductivity between the stator core and board, reducing contact failure and noise, thereby enhancing motor performance.
Implementation Method 1
the core connection part is fixed to the stator core by welding
Data Source
AI summary
A motor includes a stator core having salient poles, an insulator held by the stator core, coils of a plurality of phases which are wound around the salient poles through the insulator, a board which is electrically connected with a plurality of wires for the number of the phases that are extended from the coils, and a conduction terminal which electrically connects the board with the stator core. The conduction terminal is provided with a main body part, a board connection part which is extended from the main body part and is electrically connected with the board, a core connection part which is extended from the main body part and is electrically connected with the stator core, and a held part which is held by the insulator. The core connection part is fixed to the stator core by welding.