Card Edge Connector Ejector With Hidden Lump Portion
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Solution Overview
Problem
Existing card edge connectors with ejectors are prone to shaking due to the lack of secure retention of memory modules, especially when subjected to external forces, as they only secure the bottom edge of the module.
Innovation Solution
A card edge connector design featuring an elongated insulative housing with a central slot divided by a key, an ejector with gripping portions and a lump portion that locks the memory module in place, and a dual accommodating slot system to prevent movement in both directions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If only a bottom edge of the memory module is secured by the ejector, then the structure is simple, but the memory module is prone to shaking when subjected to external forces
Solution Approach 1:
The accommodating slot is divided into a first accommodating slot and a second accommodating slot that are communicated with each other. The first accommodating slot receives the bottom edge of the memory module, while the second accommodating slot receives the side edge of the memory module. This segmentation allows the ejector to secure multiple portions of the memory module simultaneously, improving retention stability without significantly complicating the structure.
Solution Approach 2:
The invention transitions from securing only the bottom edge (one-dimensional retention) to securing both the bottom edge and side edge (two-dimensional retention). The lump portion extends into the accommodating slot to engage the side edge of the memory module, adding another dimension of constraint that prevents shaking and improves reliability.
2Ease of manufacture
If the ejector only engages the bottom edge of the memory module, then the manufacturing is simple, but the memory module can be easily actuated by outside forces
Solution Approach 1:
The accommodating slot is segmented into two communicated slots that engage different portions of the memory module. The first accommodating slot engages the bottom edge while the second accommodating slot engages the side edge. This segmentation allows the structure to resist external forces from multiple directions without requiring complex manufacturing processes.
Solution Approach 2:
The lump portion is pre-positioned to extend into the accommodating slot, creating a preliminary engagement structure that automatically locks the side edge of the memory module in place. This preliminary structural arrangement ensures resistance to external forces before any operational forces are applied.
Data Source
AI summary
A card edge connector (100) includes an elongated insulative housing (1), a plurality of contacts (2) and an ejector (3) assembled in the insulative housing (1). The ejector (3) has a base (31) and two gripping portions (34) extending upwardly from the base (31). The gripping portions have an accommodating slot (340) therebetween for receiving a bottom edge of a memory module (200). The accommodating slot (340) has a first accommodating slot (3401) and a second accommodating slot (3402) for receiving a vertical bottom edge (211) and a transverse bottom edge (212) of the memory module (200), respectively. Thereby the memory module (200) could be stably inserted in the card edge connector (100).