| 摘要 |
PROBLEM TO BE SOLVED: To restrict deterioration of a case caused by accumulation of water at an outer circumferential surface of the case, in an evaporated fuel treatment device installed at a vehicle for processing evaporated fuel generated in a fuel tank.SOLUTION: There is provided a case 20 having inner hollow space to which adsorption material for adsorbing and eliminating gas vapor is filled. An upper surface 211 of a main chamber case body 21 of this case 20 is provided with nine parallel ribs 31 protruded in linear form without being crossed to each other and there is provided one crossing rib 35 protruded in linear form to be crossed with nine parallel ribs 31. These nine parallel ribs 31 and one crossing rib 35 are arranged without being defined to enclose the upper surface 211 of the main chamber case body 21. No water is accumulated at the lower surface, left side surface, right side surface, front surface and rear surface of the main chamber case body 21 which are outer circumferential surfaces of the case 20, and a cylindrical outer circumferential surface 251 of a sub-chamber case body 25.SELECTED DRAWING: Figure 1 |
