| 摘要 |
<p>PURPOSE:To provide a caster mechanism on a tea provided with an elevating mechanism corresponding to making the bed face lower. CONSTITUTION:The first base frame 6 and the second base frame 7 are supported by the first and the second movable frames 8 and 9 which are fixed on a shaft together under a crossed condition and a roller member 10 is provided on each one end part of the first and the second base frames 8 and 9 and each another end part side is respectively fixed rotatably on each one end part side of the first and second base frames 6 and 7 to form a leg part 2. A pair of fixing bars 14 are provided by connecting them with free bending so as to hang them on the first base frame 6 and casters 17 are provided on the lower face sides of the fixing bars 14. One end part of an operating arm fixed rotatably on the second movable frame 9 is brought into contact with the fixing bar 14 through a roller member 20 and another end part is fixed on a female screw 13 of a driving mechanism. It is possible thereby to move easily it to determine an arranging place and to make carrying easy to reduce labor.</p> |
