| 摘要 |
PURPOSE:To spontaneously lead water at washing to longitudinally side portions for good drainage by providing a front floor having a longitudinally intermediate portion thereof formed slightly higher than the longitudinally side portions in such a way as to define a hill-shaped construction, as viewed in front. CONSTITUTION:A front floor 4 is composed of a main portion 11 which is made of a rectangular plate formed in a hill-shaped construction, as viewed in front, in which a longitudinally intermediate portion 9 is slightly higher than longitudinally side portions 10. A rear portion 8 is bent upwardly substantially at right angles to the main portion 11. The main portion 11 includes costate ribs 12 and 13 concavely extending to increase rigidity thereof. |
