PROBLEM TO BE SOLVED: To provide a width-adjustable floorboard (a bottom) for a bed.SOLUTION: The floorboard for a bed having a rectangular shape as a whole in plane view, includes: one or more floorboard parts rail members along the length direction of the floorboard so as to support the floorboard parts and width end receiving members located outside at least one ends in the width direction of the floorboard in the floorboard parts. The width end receiving members are connected to the floorboard parts so as to adjust a distance towards the ends of the floorboard parts.SELECTED DRAWING: Figure 23COPYRIGHT: (C)2017,JPO&INPIT【課題】幅調整可能なベッド用床板(ボトム)を提供する。【解決手段】全体として平面視で長方形をなすベッド用床板であって、1又は2以上の床板部と、その床板部を支持するように前記床板の長さ方向に沿うレール部材と、前記床板部における前記床板の幅方向の少なくとも一端の外側に位置する幅端受け部材とを有し、前記幅端受け部材は、前記床板部の端部との間の距離が調整可能となるように、前記前記床板部に連結されていることを特徴とするベッド用床板。【選択図】図23