Card Tray Cover Mechanism for Space-Saving Ejection Detection
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Solution Overview
Problem
The existing electronic devices face a challenge of low on-board space utilization due to the ejection and detection mechanisms for card trays occupying a large area on the circuit board, hindering further integration.
Innovation Solution
A card tray and card holder apparatus is designed with a detection and ejection mechanism integrated into a card pressing cover, which forms a first accommodating space with the circuit board, allowing the card tray to be moved in and out, and includes a lever and detection portion to detect the card tray's state without occupying the circuit board space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the ejection mechanism and detection mechanism are located by the side of the card tray on the circuit board, then the card tray can be ejected and detected, but the on-board space utilization is reduced
Solution Approach 1:
The patent combines the ejection mechanism and detection mechanism into an integrated assembly that is mounted on the card pressing cover rather than separately on the circuit board. The detection portion and lever are merged into a single functional unit that performs both detection and ejection operations, reducing the total space occupied on the circuit board while maintaining both functions.
Solution Approach 2:
The invention relocates the mechanism from a planar arrangement on the circuit board to a three-dimensional arrangement where the card pressing cover with integrated mechanisms is mounted above the circuit board. This vertical stacking approach frees up on-board space while preserving the functional capabilities of both detection and ejection mechanisms.
2Area of stationary object
If the detection and ejection mechanism is integrated into the card pressing cover, then on-board space utilization is improved, but the mechanism complexity increases
Solution Approach 1:
The card pressing cover is designed to serve multiple functions: it provides structural support for the card tray, houses the integrated detection and ejection mechanisms, and acts as a mounting platform. This multi-functional design consolidates several components into one, reducing overall complexity despite the integrated functionality.
Solution Approach 2:
The detection portion automatically detects the card tray state through mechanical interaction with the card tray, and the lever automatically actuates the ejection mechanism when triggered. These self-actuating features reduce the need for additional control components, simplifying the overall system despite the integrated design.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design enhances on-board space utilization by allowing the detection and ejection mechanism to be positioned off the circuit board, enabling more compact integration of electronic devices while ensuring reliable card tray operation and stable electrical contact.
Implementation Method 1
the lever is rotatably disposed on the card pressing cover, a first end portion of the lever is disposed opposite an ejector pin hole of the electronic device, and a second end portion of the lever is disposed opposite the lever matching portion
Data Source
AI summary
This application discloses a card tray and card holder apparatus and an electronic device. The card tray and card holder apparatus includes a card pressing cover, a detection and ejection mechanism, a circuit board, a card tray, and a card holder. The card pressing cover is fastened to the circuit board, a first accommodating space is formed by the card pressing cover and the circuit board, and the card tray and the card holder are both disposed in the first accommodating space. The card tray includes a detection matching portion and a lever matching portion. The detection and ejection mechanism is disposed on the card pressing cover and includes a lever and a detection portion, where the lever is rotatably disposed on the card pressing cover, the detection portion is disposed on the card pressing cover.