| 摘要 |
<p>The present invention relates to a step board, and has an object to provide a step board with simple parts in order to prevent minor malfunctions. In order to achieve the object above, the step board according to the present invention includes a plurality of bars, each having a top surface to step thereon and a bottom surface mounted with a rotation body, a driving section hinge-coupled with the front ends of the bars for rotatively supporting the bars in the vertical direction and mounted with a first caster on the bottom surface thereof, and a base plate rotatively coupled with the driving section at the front end thereof, mounted with a plurality of second casters on the bottom surface thereof and curved at a portion corresponding to the rotation body, wherein the rotation body rolls to move by rotating along the curved portion of the base plate as the plurality of bars rotate in the vertical direction.</p> |
