PROBLEM TO BE SOLVED: To normally energize a bed body in a closing direction by a closing direction drive mechanism while reducing a space around a rotary shaft.SOLUTION: A folding bed comprise: a base a bed body rotatably arranged in the base via a rotation part so as to be in an open state and a closed state a leg pipe rotatably arranged on the lower surface of the bed body and to be rotated between the open position and the closed position in accordance with the rotation of the bed body and a closing direction drive mechanism arranged in the rotation part so as to rotate the bed body in a closing direction. The closing direction drive mechanism comprises: a driven link whose one end is rotated around a rotary shaft of the rotation part so as to transmit rotation force in the closing direction to the bed body a drive link whose one end is rotatably attached to the base a closing direction drive spring connected between the other end of the drive link and the base and a transmission link for connecting the other end of the driven link to the actuation point of the drive link.COPYRIGHT: (C)2014,JPO&INPIT【課題】回動軸回りのスペースを小さく抑えながら、ベッド本体を閉方向駆動機構によって閉方向へ常時付勢する。【解決手段】折り畳み自在ベッドはベースと、ベースに回動部を介して回動自在に配置され、開状態と閉状態とをとることができるベッド本体と、ベッド本体の下面に回動自在に設けられ、ベッド本体の回動に合わせて開位置と閉位置との間で回動する脚パイプと、回動部に設けられ、ベッド本体を閉方向へ回転させるための閉方向駆動機構とを備えている。閉方向駆動機構は一端が回動部の回動軸回りに回動してベッド本体に閉方向への回転力を伝達する従動リンクと、一端がベースに回動自在に取付けられた駆動リンクと、駆動リンクの他端とベースとの間に連結された閉方向駆動スプリングと、従動リンクの他端と駆動リンクの作用点とを連結する伝達リンクとを有する。【選択図】図9
