Electrical Connector Position Member for Soldering Stability
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Solution Overview
Problem
Conventional electrical connectors with insulative housings positioned on substrates by posts do not allow the housings to move downwardly during soldering, leading to potential disconnection of solder balls from the substrate.
Innovation Solution
An electrical connector assembly with a pick up cap and position member that allows the insulative housing to move downwardly during soldering, ensuring secure connection by interlocking components and maintaining space between the position member and stop portion, enabling simultaneous soldering of soldering members and position member on the substrate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the insulative housing is positioned on the substrate by the post, then the housing is supported and positioned, but the housing cannot move downwardly when solder balls are melted causing disconnection
Solution Approach 1:
The patent transforms the static positioning structure into a dynamic one by introducing a resilient arm that can flex downward. The resilient arm is designed to be elastic, allowing it to move downward when solder balls are melted and then return to its original position, enabling the housing to adapt during the soldering process while maintaining connection reliability
Solution Approach 2:
The patent divides the positioning function into separate components: the post provides initial positioning, while the resilient arm provides adaptive support. This segmentation allows each component to perform its specific function - the post for stable mounting and the resilient arm for accommodating downward movement during soldering
2Stability of the object's composition
If the insulative housing is fixed on the substrate, then positioning is stable, but solder balls may disconnect from the substrate due to inability to move downward
Solution Approach 1:
The resilient arm introduces dynamic capability to an otherwise static positioning system. It remains stable during normal operation but can flex downward when needed during soldering, providing both stability and adaptability to prevent solder disconnection
Solution Approach 2:
The resilient arm acts as a pre-positioned cushioning element that anticipates the downward movement need during soldering. It is designed in advance to provide the necessary flexing capability, preventing solder disconnection before it can occur
Data Source
AI summary
An electrical connector assembly includes an electrical connector (100) and a pick up cap (3) assembled thereon. The electrical connector (100) includes an insulative housing (1) with a plurality of contacts (11) received therein, a plurality of soldering members (12) connected the contacts (11) and protruded beyond the bottom of the insulative housing (1), and a position member (2) surrounded and moved upwardly and downwardly relative to the insulative housing (1). The insulative housing (1) includes a limit portion (102) protruded outwardly, the pick up cap (3) includes a stop portion (31) protruded toward the limited portion (102) and the position member (2) includes a body portion (20) positioned therebetween. When the soldering members (12) and the position member (2) are put on a same plane, there is a space between the body portion (20) and the stop portion (31).