Contactor Terminal Structure for Junction Box Isolation
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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, compromising reliability and safety.
Innovation Solution
A contactor design featuring a stationary contact bracket with grooves for junction box compatibility, phase partitions to prevent short circuits, and protective covers to block foreign objects, along with installation features for flexibility and safety enhancements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the stationary contact bracket is designed to assemble with specific junction box types, then the assembly compatibility is improved, but the flexibility and adaptability deteriorate
Solution Approach 1:
The stationary contact bracket is designed with a universal mounting structure that can accommodate multiple types of junction boxes (EverLink, NutHolder, and other types). The bracket includes standardized mounting features and adjustable components that enable it to perform the same electrical connection function across different junction box designs, thereby achieving both reliability in assembly compatibility and flexibility in adaptability.
2Device complexity
If phase partitions or protective covers are not equipped, then the device complexity is reduced, but the risk of accidental short circuit and foreign object entry increases
Solution Approach 1:
The contact bracket is segmented into multiple isolated compartments by phase partitions that separate different electrical phases. This segmentation prevents accidental short circuits between phases while maintaining a relatively simple overall structure. The partitions create physical barriers without requiring complex protective cover systems.
3Reliability
If phase partitions are added to prevent short circuits, then the reliability is improved, but the device complexity increases
Solution Approach 1:
The phase partitions are merged with the mounting structure of the contact bracket, forming an integrated component rather than separate add-on elements. The partitions are constructed from conductive materials that serve both as structural support and as electrical isolation barriers, thereby improving short circuit prevention while minimizing the increase in device complexity.
Data Source
Figure 1~2A
Figure 2B~2C
Figure 3A~3B
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.