| 摘要 |
PROBLEM TO BE SOLVED: To provide a portable slope which can make it easy to pass through a variety of parts including steps on a passage that are hard to pass.SOLUTION: A portable slope 100 is constituted by a first passage plate 110 and a second passage plate 120 being movably joined to each other by a hinge 200 and deformable into a folded state, a tilted state, and an unfolded state. The hinge 200 is composed of a first arm 210 attached to the first passage plate 110, a second arm 22 attached to the second passage plate 120, and a joint pin 230 which movably joins the first arm 210 and the second arm 220. In the first arm 210, a double circle hole 211 with which the joint pin 230 is loosely engaged is formed and a first angle defining part 212 is formed. In the second arm 220, an opposite throughhole 221 with which the joint pin 230 is engaged in an unrotatable manner is formed and a second angle defining part 222 in contract with the first angle defining part 212 is formed. |
