PCB Card Retention Bracket with Adjustable Movable Mechanism
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Solution Overview
Problem
Existing electronic device PCB card retention systems fail to securely accommodate different types and sizes of PCB cards, particularly during transportation, and cannot retain multiple PCB cards simultaneously, leading to potential dislodgment and electrical disconnects due to shock and vibrations.
Innovation Solution
A PCB card retention system comprising a bracket with a fixed protrusion and a movable mechanism, including a positioning and translation mechanism, that can adjust to accommodate various PCB card shapes and sizes, allowing for secure retention of multiple cards in the same electronic device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a bracket or retention mechanism with predetermined shape/size is used to constrain movement of a PCB card, then the PCB card is secured in the socket, but the mechanism cannot accommodate different types or sizes of PCB cards
Solution Approach 1:
The retention mechanism includes a movable mechanism with a face that can be positioned at any one of a plurality of positions, each a different distance away from the face of the fixed protrusion. The translation mechanism permits the face of the movable mechanism to translate relative to the face of the fixed protrusion, allowing dynamic adjustment to accommodate different PCB card sizes and types while maintaining secure retention
Solution Approach 2:
The retention mechanism is designed to retain multiple PCB cards with different shapes and sizes using the same bracket structure. By combining the fixed protrusion with the adjustable movable mechanism, a single universal retention system can accommodate various PCB card configurations rather than requiring separate mechanisms for each card type
2Reliability
If a bracket with predetermined shape/size is used to retain an individual factory-installed PCB card, then that specific card is secured, but multiple PCB cards cannot be retained in the same electronic device
Solution Approach 1:
The retention mechanism is designed to retain multiple PCB cards with different shapes and sizes using the same bracket structure. By combining the fixed protrusion with the adjustable movable mechanism, a single universal retention system can accommodate various PCB card configurations rather than requiring separate mechanisms for each card type
3Reliability
If shock and vibrations occur during transport, then the electronic device may be damaged or components decoupled, but the PCB card dislodges from the socket
Solution Approach 1:
The retention mechanism applies preliminary constraining force to the PCB card through the fixed protrusion and movable mechanism, preventing the card from dislodging during transport. The movable mechanism can be positioned to apply appropriate retention force before transport vibrations occur, counteracting the harmful effects of shock and vibration in advance
Data Source
AI summary
In some examples, a printed circuit board (PCB) card retention system can include a bracket, a fixed protrusion at a first location on the bracket, where the fixed protrusion includes a face, and a movable mechanism coupled to the bracket at a second location a distance away from the first location, where the movable mechanism includes a face, a positioning mechanism to position the face of the movable mechanism at a position of a plurality of positions that are each a different distance away from the face of the fixed protrusion, and a translation mechanism to permit the face of the movable mechanism, when at the position, to translate.