| 摘要 |
PROBLEM TO BE SOLVED: To prevent an installed object from falling forward by positively tilting the installed object rearward when lateral oscillation occurs.SOLUTION: An upper rack 10A includes at least: an upper forward rail 20; and a rearward rotating body supporting part 142 that rotatably supports a rearward rotating body 50. A lower rack 10B includes at least: a lower rearward rail 30 that is tilted downward from the rear to the front; and a forward rotating body supporting part 192 that rotatably supports a forward rotating body 40. The forward rotating body 40 is supported by the forward rotating body supporting part 192 at a position for abutting on a rail surface of the upper forward rail 20, and the rearward rotating body 50 is disposed on a rail surface 32 of the lower rearward rail 30. |
