PROBLEM TO BE SOLVED: To provide a carrying vehicle which can be opened/closed and keep an open state or a close state with a simple structure.SOLUTION: In a tray carrying vehicle 10, a pair of parallel link mechanisms 20 has a first link member 21 having a hole portion 21b and a groove portion 21c, and a pair of second link members 22 which is coupled to the first link member 21, has a generally arc-shaped rotary groove 22c and a hole portion 22b, and are bilaterally symmetrically arranged. A rotary shaft 14 is inserted in hole portions 21n and 22b of the pair of the parallel link mechanisms 20, and becomes a rotation center of the second link member 22. An operation shaft 15 is inserted in the groove portions 21c and the rotary groove 22c of the pair of the parallel link mechanisms 20, and are operated by a user to relatively move in the rotary groove 22c when switching the open state to the closed state or when switching from the closed state to the open state. The rotary groove 22c has an engaging groove 22ca with which the operation shaft 15 engaged to hold the open state, and an engaging groove 22cb with which the operation shaft 15 engages to hold the closed state.SELECTED DRAWING: Figure 14COPYRIGHT: (C)2020,JPO&INPIT【課題】簡素な構成により、開状態あるいは閉状態を維持することができる開閉可能な搬送車を提供する。【解決手段】トレイ搬送車１０は、一対の平行リンク機構２０が、孔部２１ｂと溝部２１ｃとを有する第１リンク部材２１と、第１リンク部材２１に連結されており略弧状の回動溝２２ｃと孔部２２ｂとを有し左右対称に配置された一対の第２リンク部材２２とを有する。回動軸１４は、一対の平行リンク機構２０の孔部２１ｂ，２２ｂに挿入され、第２リンク部材２２の回動中心となる。操作軸１５は、一対の平行リンク機構２０の溝部２１ｃおよび回動溝２２ｃに挿入され、開状態から閉状態への切り換え時、あるいは閉状態から開状態への切り換え時に、使用者によって操作され、回動溝２２ｃ内を相対移動する。回動溝２２ｃは、操作軸１５が係合して開状態を保持する係合溝２２ｃａと、操作軸１５が係合して閉状態を保持する係合溝２２ｃｂとを有している。【選択図】図１４
