To provide a cassette bearer and a medical bed, wherein the installation of a driving mechanism is not required to allow the cassette bearer to enter into or exit from the predetermined installation position beneath the bedplate, and to enable the cassette bearer to be fixed to the predetermined installation position beneath the bedplate. In addition, it can be easily detached from the aforementioned installation position. Once the fixation rod (21) and the rotating rod (22) located on one side are gripped, the fixation rod (31) and the rotating rod (32) provided on the other side will come near, and the contact portion (25, 35) of the stopper (24, 34) for both sides will separate from the guide rail (15) so as to be inserted into the cassette bearer (1). Once separating the fixation rod (21) and the rotating rod (22), the fixation rod (31) and the rotating rod (32) are also separated to make the contact portion (25, 35) contact the guide rail (15), thereby obtaining the braking effect.本發明之課題係為提供一種片匣承座及醫療用床,其係不須設置驅動機構,即可使片匣承座進出於床之床板部下方之預定的安裝位置,且可固定在該床之床板部下方的預定安裝位置,此外,還可輕易地使其從上述安裝位置脫離。本發明之解決手段為:一旦握住設於一側的固定桿(21)以及旋轉桿(22),設於另一側的固定桿(31)與旋轉桿(32)也會靠近,雙方之止動件(24、34)的接觸部(25、35)會從導軌(15)分開而可插入片匣承座(1)。一旦分開固定桿(21)與旋轉桿(22),則固定桿(31)與旋轉桿(32)也會分開,接觸部(25、35)接觸到導軌(15),而可獲得制動作用。1‧‧‧片匣承座4‧‧‧中央標記5‧‧‧滾子15‧‧‧導軌21‧‧‧固定桿22‧‧‧旋轉桿23‧‧‧旋轉軸24‧‧‧止動件25‧‧‧接觸部26‧‧‧連結片27‧‧‧壓縮彈簧31‧‧‧固定桿32‧‧‧旋轉桿33‧‧‧旋轉軸34‧‧‧止動件35‧‧‧接觸部36‧‧‧連結片41‧‧‧連結棒
