SD Memory Card With Rotating USB Interface
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Solution Overview
Problem
Current SD memory cards require a multi-function card reader to be compatible with both SD and USB interfaces, which is inconvenient and limits their direct electrical connection to USB ports.
Innovation Solution
An SD memory card design featuring an SD card adapter with a receiving groove for an SDIO interface and a USB interface, allowing the memory card to be electrically connected to a USB port without a multi-function card reader by using a plug connector with metal strips and a rotating cover plate to form the necessary interfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a multi-function card reader is used to support both SD and USB interfaces, then compatibility with different connection ports is improved, but device complexity increases
Solution Approach 1:
The memory card system is divided into two separate functional components: an SD card adapter with SD interface contacts, and a memory card with both SDIO interface contacts and USB connecting fingers. This segmentation allows each component to be optimized independently while maintaining overall compatibility with both SD and USB interfaces, reducing the complexity of any single device.
2Ease of operation
If an SD card adapter with receiving groove is used to enable direct USB connection, then ease of operation is improved, but device complexity increases
Solution Approach 1:
The memory card is designed to be inserted into the SD card adapter, with the USB connecting fingers nested within the adapter housing. The cover plate rotates to expose or conceal the USB connecting fingers, allowing the smaller memory card to be nested within the larger adapter while maintaining access to both SD and USB interfaces.
3Ease of operation
If USB connecting fingers are exposed externally, then ease of operation is improved, but reliability deteriorates due to exposure to external factors
Solution Approach 1:
The cover plate is designed to rotate between two positions: covering the USB connecting fingers when not in use, and exposing them when USB connection is needed. This dynamic mechanism allows the USB connecting fingers to be protected from environmental factors when not needed, while being easily accessible when required, thus maintaining both reliability and ease of operation.
Data Source
AI summary
The present invention relates to an SD memory card, including an SD card adapter and a memory card. One end of the SD card adapter is provided with an SD interface, and the other end is provided with a receiving groove. Both ends of the memory card are respectively provided with a set of SDIO interface contacts and a USB interface. The memory card can be inserted into the receiving groove to electrically connect the set of SDIO interface contacts and the SD interface. When the memory card of the SD memory card is inserted into the receiving groove of the SD card adapter, the SD interface of the SD card adapter is electrically conducted with the set of SDIO interface contacts of the memory card, for the SD card adapter to be inserted into the SD slot to serve as an ordinary SD memory card; when the memory card of the SD memory card is unplugged of the receiving groove of the SD card adapter, the set of USB interfaces of the memory card can be inserted into the USB slot to serve as an ordinary USB storage device. Hence, the SD memory card can be electrically connected with the USB connection port without the help of a multi-functional card reader.