Contactor Terminal Assembly With Phase Partitions and IP20 Protection
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Solution Overview
Problem
Existing contactors face limitations in compatibility with different junction boxes, risk of accidental short circuits, and entry of foreign objects through wiring holes, compromising reliability and safety.
Innovation Solution
A contactor design featuring a stationary contact bracket with grooves for junction box assembly, phase partitions to prevent short circuits, and protective covers to block foreign objects, along with flexible installation features for various junction boxes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the stationary contact bracket is designed to assemble with a specific junction box type, then the assembly structure is simple, but the adaptability to different junction boxes is reduced
Solution Approach 1:
The stationary contact bracket is designed with a universal mounting structure that can accommodate different types of junction boxes (EverLink, NutHolder, etc.). The bracket includes standardized mounting holes and clamping mechanisms that work with multiple junction box types, eliminating the need for different bracket designs for each junction box type while maintaining simple assembly procedures.
2Device complexity
If no phase partitions or protective covers are provided, then the device structure is simple, but the risk of accidental short circuit and foreign object entry increases
Solution Approach 1:
The contactor is divided into functionally separated zones using phase partitions. These partitions create distinct compartments for different electrical phases and terminal groups, physically isolating them to prevent short circuits. The segmentation is achieved through simple partition walls that divide the internal space without adding complex mechanical systems.
Solution Approach 2:
Protective covers are introduced as intermediary elements between the external environment and the internal wiring holes. These covers act as a barrier that prevents foreign objects (dust, fingers) from entering the wiring holes while maintaining relatively simple device structure. The covers can be easily installed and removed without complicating the overall device architecture.
3Device complexity
If no phase partitions or protective covers are provided, then the device structure is simple, but the safety against foreign object entry decreases
Solution Approach 1:
Protective covers are installed in advance over the wiring holes before the contactor is put into operation. This preliminary protective action prevents foreign objects from entering the wiring holes during installation, operation, and maintenance phases. The covers are designed to be pre-installed components that provide immediate protection without requiring additional safety measures during operation.
Data Source
AI summary
A contactor is proposed, which includes a stationary contact bracket having a main body and a plurality of terminals extending from the main body and configured to be electrically connected with wires, each of the plurality of terminals including a plate-shaped terminal body and a terminal hole penetrating through the terminal body; a junction box having a plurality of wiring holes and assembled to the stationary contact bracket, wherein each of the plurality of terminals is located in a corresponding wiring hole; wherein the surface of the junction box away from the stationary contact bracket is provided with a groove, and the groove is located between the plurality of terminals.