| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a safe set-on stairs for expanding a tread of a footboard without allowing the tiptoe of a foot to abut on a projecting part and a nosing part of the footboard when ascending the stairs. <P>SOLUTION: This set-on stairs is a stairs having a side plate 11 for the stairs, the footboard 12, a riser 13 and a force beam 14 for supporting the footboard 12 and the riser 13, and is characterized in that the side plate 11 for the stairs has a horizontal part of the lower side, a vertical part continuing with the horizontal part and a lead-in recess in a lower part; the lower side is composed of a shape having a taper part 110; the footboard 12 and the riser 13 are fixed so as to be supported by a force beam 15 arranged inside the side plate 11 for the stair; the riser 13 has the vertical part in an upper part and the lead-in recess in the lower part; and the footboard 12 is connected and joined by interposing the nonslipping nosing part 15 on the upper end. <P>COPYRIGHT: (C)2004,JPO</p> |
