RJ45 Connector Fool-Proof Structure for Correct PCB Assembly
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Solution Overview
Problem
Existing electrical connectors, such as RJ45 connectors, face challenges in differentiating data transmission speeds and preventing incorrect assembly of internal circuit boards during installation.
Innovation Solution
The design includes an electrical connector with distinct fool-proof portions on each internal circuit board and terminal adapter block, ensuring correct matching by making these portions different in size, shape, or position, preventing incorrect connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If standardized RJ45 connector ports are used to meet market requirements, then data transmission speed requirements can be satisfied, but incorrect assembly of internal circuit boards may occur
Solution Approach 1:
The patent applies asymmetry by designing different fool-proof portions (protrusions and grooves) on different internal circuit boards. Specifically, the first internal circuit board has a first fool-proof portion with specific shape, position, or size characteristics, while the second internal circuit board has a second fool-proof portion that differs in shape, position, or size. This asymmetric design ensures that each terminal adapter block can only be correctly assembled with its corresponding internal circuit board, preventing incorrect assembly while maintaining standardized RJ45 connector ports for different data transmission speeds
2Adaptability or versatility
If differentiated data transmission speeds are implemented, then market requirements are met, but the risk of mixing electrical connectors increases
Solution Approach 1:
The patent implements preliminary action by pre-configuring distinct fool-proof portions on internal circuit boards before assembly. The different fool-proof portions (varying in shape, position, or size) are designed in advance to correspond to specific terminal adapter blocks. This preliminary differentiation enables workers to quickly identify the correct matching pairs without requiring complex verification during assembly, thus maintaining ease of operation while preventing mixing of electrical connectors with different data transmission speeds
3Reliability
If fool-proof portions are added to prevent incorrect connections, then assembly correctness is improved, but device complexity increases
Solution Approach 1:
The patent applies local quality by adding fool-proof portions only at specific critical locations on the internal circuit boards and terminal adapter blocks, rather than modifying the entire structure. The fool-proof portions are localized features (protrusions and grooves) positioned at specific areas that enable correct matching. This localized approach prevents incorrect connections while minimizing the increase in overall device complexity, as the majority of the connector structure remains unchanged
Data Source
AI summary
An electrical connector includes an insulating body, a first installation module and a second installation module. The first installation module includes a first internal circuit board and a first terminal adapter block. The second installation module includes a second internal circuit board and a second terminal adapter block. The first internal circuit board and the first terminal adapter block include first fool-proof portions that cooperate with each other. The second internal circuit board and the second terminal adapter block include second fool-proof portions that cooperate with each other. The first fool-proof portions are different from the second fool-proof portions, thereby preventing the first terminal adapter block from being incorrectly connected to the second internal circuit board, and preventing the second terminal adapter block from being incorrectly connected to the first internal circuit board. The present disclosure also relates to an electrical connector assembly having the electrical connector.