Rotatable Card Cover Mechanism for Ejector-Free Tray Withdrawal
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Solution Overview
Problem
Conventional card holders for electronic devices are difficult to withdraw without a card ejector pin, making it inconvenient for users to remove them from the device.
Innovation Solution
A card holder design featuring a rotatable card cover with a protrusion mechanism that allows the card holder to be inserted and withdrawn by rotating about a protrusion, eliminating the need for a card ejector pin, and including a sealing member to secure the card holder in place.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conventional card holder design is used, then the card holder can be securely inserted into the electronic device, but it becomes difficult to withdraw without a card ejector pin
Solution Approach 1:
The card holder employs a rotatable card cover that transitions from a fixed state during insertion to a rotatable state during withdrawal. When the card cover rotates about the protrusion, it transforms the withdrawal mechanism from requiring an external ejector pin to utilizing the rotational motion itself, thereby improving ease of operation while maintaining secure insertion.
Solution Approach 2:
The card holder structure enables self-withdrawal through the rotational movement of the card cover. The protrusion and card cover combination allows the user to directly manipulate the card holder for withdrawal without needing a separate card ejector pin tool, making the system self-sufficient for both insertion and withdrawal operations.
2Ease of operation
If the card cover is made rotatable to enable easy withdrawal, then user convenience is improved, but the structural complexity of the card holder increases
Solution Approach 1:
The card holder is segmented into distinct functional components: the card tray for holding the card, the card cover that rotates, and the protrusion that serves as the rotation pivot. This segmentation allows each component to perform its specific function independently, simplifying the overall design while enabling the rotatable withdrawal mechanism.
Solution Approach 2:
The card cover serves multiple functions: it protects the card when closed, acts as a lever for insertion when pushed, and enables withdrawal when rotated about the protrusion. This multi-functionality reduces the need for separate components, thereby improving ease of operation without proportionally increasing structural complexity.
3Ease of operation
If the card holder is designed for easy removal, then user convenience is enhanced, but the sealing performance may be compromised
Solution Approach 1:
The sealing member is pre-positioned to engage with the housing before the card holder is fully inserted. This preliminary sealing action ensures that the sealing interface is established first, creating a protective barrier against moisture and dust entry, while the subsequent rotational withdrawal mechanism maintains this sealing integrity throughout the removal process.
Solution Approach 2:
The sealing member is designed as a flexible component that can deform to accommodate the rotational movement of the card cover during withdrawal. This flexibility allows the sealing interface to maintain contact and sealing effectiveness throughout the dynamic insertion and withdrawal operations, preventing compromise of sealing performance.
Data Source
AI summary
A card holder is used for an electronic device having a housing, and is able to accommodate a data card and be inserted into the housing. The card holder includes a card tray and a card cover. The card tray is configured to accommodate the data card. The card cover is connected to the card tray, is rotatable relative to the card tray, and includes a first end and a second end opposite to each other and a first protrusion extending towards the card tray. When the card holder is in a state of being inserted into the housing and a pushing force is applied to the first end, the card cover is rotatable about the first protrusion such that the first end extends further into the housing and the second end extends out of the housing. An electronic device is also provided.