Smart Cube Terminal Magnetic Retraction Mechanism
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Solution Overview
Problem
Conventional cubes, such as the Rubik's Cube, lack functionality beyond color-matching, leading to short-lived interest due to increased frictional resistance from protruded terminals for power and data transfer, which compromises contact between unit blocks during rotation.
Innovation Solution
A smart cube design featuring unit blocks with insertion holes for terminals, utilizing permanent magnets for contact and a conductive layer for power/data transfer, and rotation detection units to manage terminal alignment and reduce frictional resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If terminals are protruded from unit block surfaces to ensure contact between adjacent unit blocks, then contact reliability is improved, but frictional resistance increases during rotation
Solution Approach 1:
The terminal is divided into two functional parts: a protruding contact portion for electrical connection and a recessed storage portion for magnet retention. This segmentation allows the terminal to fulfill both contact and retention functions without requiring continuous protrusion, thereby reducing friction during rotation while maintaining connection reliability.
Solution Approach 2:
The terminal transitions from a static protruding state to a dynamic retrieval mechanism. During rotation, the terminal can be retrieved into the insertion hole, dynamically adjusting its position to minimize frictional resistance while maintaining contact reliability when needed.
2Ease of operation
If terminal height is reduced to minimize frictional resistance, then ease of operation is improved, but contact between terminals is compromised
Solution Approach 1:
The mechanical retention system (protruding terminals) is replaced with a magnetic field-based retention system. The permanent magnet embedded in the insertion hole generates magnetic force to retain the terminal, eliminating the need for tall protruding structures while ensuring reliable contact during operation.
Solution Approach 2:
The terminal design changes the retention mechanism from mechanical (height-based) to magnetic (field-based). By changing the retention parameter from physical protrusion height to magnetic force strength, the system achieves both low friction during rotation and reliable contact when terminals engage.
3Reliability
If permanent magnets are used to retain terminals in insertion holes, then terminal retention is improved, but manufacturing complexity increases
Solution Approach 1:
The permanent magnet serves multiple functions: it retains the terminal in the insertion hole, provides magnetic force for contact between adjacent unit blocks, and enables the terminal to be retrieved and repositioned. This multi-functionality reduces the need for additional retention mechanisms, ultimately simplifying the overall manufacturing process.
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
Ensures proper contact between terminals while minimizing frictional resistance during cube manipulation, enhancing user engagement by maintaining contact through magnetic adhesion and efficient data/power transfer.
Implementation Method 1
the terminal includes a permanent magnet for allowing a polarity of a retrieved end of the terminal to be opposite to a polarity of a retrieved end of a terminal of the other unit block such that the terminal is retrieved from the insertion hole and adhered to the terminal of the other unit block by a magnetic force
Data Source
AI summary
A smart cube is disclosed. An embodiment of the present disclosure may provide a smart cube, comprising: a main frame; and a plurality of unit blocks coupled to the main frame and constituting six faces of a regular hexahedron, wherein the unit block comprises: a display unit disposed on a surface of the unit block that is exposed to an outside; and a plurality of terminals disposed on a facing surface of the unit block facing another unit block for transferring electric power and data for the display unit, wherein the terminal is retrievably disposed in an insertion hole formed on the facing surface of the unit block, and wherein the terminal includes a permanent magnet for allowing a polarity of a retrieved end of the terminal to be opposite to a polarity of a retrieved end of a terminal of the other unit block such that the terminal is retrieved from the insertion hole and adhered to the terminal of the other unit block by a magnetic force.