Memory Card Curved Edge Design for Smooth Insertion
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Solution Overview
Problem
Memory cards experience instability and damage during insertion and removal from sockets due to friction and impact, which increases with higher storage speeds and capacities.
Innovation Solution
The memory card design features edges with specific geometries and terminal arrangements that reduce friction and impact by forming gentle angles and using a withdrawal assisting portion, allowing smooth insertion and removal, and a socket configuration that accommodates these edges for secure connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If memory card insertion speed and storage capacity are increased, then productivity and information storage capability are improved, but friction and impact during insertion increase causing device damage
Solution Approach 1:
The memory card employs curved edges with specific radii of curvature (first edge: 0.5-2mm, second edge: 0.3-1.5mm) instead of sharp corners. This curvature design allows the card to smoothly enter the socket by gradually distributing insertion force, reducing impact and friction during high-speed insertion while preventing device damage.
2Quantity of substance
If memory card storage capacity and speed are increased, then information storage capability is improved, but instability during insertion and removal increases
Solution Approach 1:
The curved edge design with optimized radii ensures stable insertion by creating a gradual contact path with the socket. This reduces sudden impacts and friction spikes that cause instability, allowing high-capacity memory cards to be reliably inserted and removed even at high speeds.
Solution Approach 2:
The invention optimizes specific geometric parameters (edge curvature radii between 0.3-2mm) to change the physical interaction characteristics between memory card and socket. This parameter optimization ensures stable operation for high-capacity cards by controlling the insertion force distribution and reducing mechanical stress.
3Productivity
If memory card is inserted quickly into socket, then productivity is improved, but impact and friction increase causing device damage
Solution Approach 1:
The curved edges with radii of 0.5-2mm on the first edge and 0.3-1.5mm on the second edge enable the memory card to be inserted quickly without causing damage. The curvature distributes the insertion impact over a longer time period and larger contact area, reducing peak forces that would otherwise damage the device during high-speed insertion.
Data Source
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Figure 3
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AI summary
Provided is a memory card, which includes two pairs of opposite edges, first row terminals arranged adjacent to an insertion-side edge of the memory card, and second row terminals arranged apart from the insertion-side edge of the memory card. The memory card can be easily reset in terms of software without controlling power supply in terms of hardware. Also, the memory card can be smoothly attached and detached during insertion of the memory card into a socket and reduce damage to a device.