<；P>；PROBLEM TO BE SOLVED: To provide a tray presser mechanism in a carrier cart which does not need a working process about a component, is also easy to assemble, can reduce production costs, and can prevent the rattle and popping out of the tray certainly even if a cart vibrates or the movement inertia and centrifugal force at the time of urgent carrier act. <；P>；SOLUTION: In the situation that makes an elongated leaf-like retainer plate 3 which consists of flexible material flex and change shape in an arch, a bulging part 32 is formed in between by fixing and hanging both ends 31, 31 on respective retainer groove 22a, 22a which are prepared on the upper guiding member 22 of a guide rail 2 respectively. Additionally, while making this bulging part 32 contact a lower guiding member 21 in a biasing situation, a retaining projection 11a is formed respectively on the upper surface in both ends of a flange part 11. It is organized so that the retainer plate 3 concerned flexes and changes shape responding against lifting action by the retaining projection 11a when this retaining projection 11a passes through the lower surface of the bulging part 32 of the retainer plate 3. <；P>；COPYRIGHT: (C)2009,JPO&INPIT
