SPHERICAL TRAVELLING DEVICE USING SHAPE MEMORY ALLOY WIRES

摘要

The present invention relates to a spherical moving device using a shape memory alloy wire. To achieve this, the spherical moving device comprises: a spherical outer housing (10); an inner housing (20) embedded in the outer housing (10) gyroscopically; a reactive enclosure (30) arranged around the outer housing (10), having a variable surface shape; an elastic unit (50) to connect the reactive enclosure (30) and the outer housing (10); and a control module (40) to control the reactive enclosure (30) by being embedded in the inner housing (20). The reactive enclosure (30) comprises a number of substrates (31) and a number of shape memory alloy wires (32) to connect each substrate (31) with each other. An outer circumference of the inner housing (20) is fixated to a number of metallic balls (22) adhering to the outer housing (10), and a lower part of the inner housing (20) is combined to a secondary battery (21) acting as a weight. The spherical moving device travels by a center of gravity of the inner housing (20) since the substrate (31) is recessed by a shrinkage of the shape memory alloy wire (32) of the reactive enclosure (30).