Electrical Connector Ejection Surface Segmentation
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Solution Overview
Problem
Existing electrical connectors face challenges in designing smaller partitions between terminals due to the need for larger ejector pins to ensure strength, which prevents complete separation of the insulating body from the mold and limits the intensive development of terminals.
Innovation Solution
The electrical connector features a protruding block with a first ejector pin surface and a second ejector pin surface, allowing the ejector pin to push on both surfaces simultaneously, reducing the need for the ejector pin to fully engage the partition, thus enabling a smaller partition size and closer terminal spacing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the ejector pin size is increased to ensure strength, then the reliability of the ejector pin is improved, but the partition size cannot be reduced and terminal spacing cannot be minimized
Solution Approach 1:
The ejector pin function is segmented into two separate surfaces: the first ejector pin surface on the protruding block and the second ejector pin surface on the partition. This allows the ejector pin to push against both surfaces simultaneously, distributing the force and enabling the partition to be smaller while maintaining sufficient ejection capability
Solution Approach 2:
The solution transitions from a single-point or single-surface ejection to a multi-surface ejection system. By adding the first ejector pin surface on the protruding block above the partition, the ejection force is applied in multiple locations, effectively reducing the required size of the partition while maintaining ejection reliability
2Productivity
If the partition size is reduced to enable closer terminal spacing, then the productivity and compactness are improved, but the ejector pin cannot completely push against the partition
Solution Approach 1:
The ejection function is segmented between two surfaces: the partition's second ejector pin surface and the protruding block's first ejector pin surface. This segmentation allows the smaller partition to be effectively ejected through combined action on both surfaces, maintaining ejection completeness despite reduced partition size
Solution Approach 2:
The protruding block acts as an intermediary element that provides the first ejector pin surface. This intermediary structure enables the ejector pin to apply force at multiple points (both on the partition and on the protruding block), ensuring complete ejection even when the partition is too small to be fully pushed by the ejector pin alone
Data Source
AI summary
An electrical connector is used to electrically connect a chip module to a circuit board. The electrical connector has an insulating body, provided with multiple accommodating holes vertically penetrating through the insulating body. An upper surface of the insulating body protrudes upward to form a protruding block located between adjacent ones of the accommodating holes to support the chip module. The protruding block has a first ejector pin surface. The insulating body has a second ejector pin surface adjacent to the protruding block. The first ejector pin surface and the second ejector pin surface are provided for an ejector pin on a mold to push thereon so as to push the insulating body out of the mold. Multiple terminals are correspondingly accommodated in the accommodating holes to be electrically connected to the chip module.