| 摘要 |
PROBLEM TO BE SOLVED: To solve the conventional problem in which: when height of article holding ribs erected from a bottom part of a washing tray such that the article holding ribs surround an article is high, washing efficiency of the article is reduced, or a machine oil, impurities or the like having adhered to the article remain; and when lowering the height of the article holding ribs, strength of the washing tray is reduced, so that the article is damaged, or the washing tray becomes a waste article.SOLUTION: A washing tray T is formed with a lot of article storage parts A in each of which one article B is stored, by a plurality of article holding ribs 4, and has a bottom part 1 formed with a through hole 1a in a central part of each article storage part. A central high position article holding rib 4a positioned in a central part of the bottom part is formed in a height such that the central high position article holding rib 4a abuts on the bottom part of the washing tray positioned upward when stacking the washing trays, and an article holding rib except the central high position article holding rib is formed in a height such that the article holding rib does not abut on the bottom part of the washing tray positioned upward when stacking the washing trays. Thereby, strength or rigidity of the central part of the bottom part is heightened to suppress downward flexure of the bottom part. Accordingly, damage to the article can be prevented, and a wasting ratio of the washing tray can be reduced. |
