| 摘要 |
[ SOLVING MEANS ] A RIB 164 EXTENDING FROM A BOTTOM PLATE 163 OF A SEAT 32 TO THE LOWER SIDE OF AN OPENING PORTION 162 OF A SMALL THING STORING PORTION 161 IS PROVIDED BETWEEN THE OPENING PORTION 162 OF THE SMALL THING STORING PORTION 161 AND THE UPPER EDGES 75 a AND 76a OF BODY COVERS 75 AND 76.@[EFFECTS] A LABYRINTH STRUCTURE CAN BE FORMED BY THE OPENING PORTION OF THE SMALL THING STORING PORTION, THE UPPER EDGES OF THE BODY COVERS AND THE RIB, AND THE SEALING PROPERTIES CAN BE ENHANCED BY SHIELDING THE SMALL THING STORING PORTION FROM THE EXTERIOR BY THE LABYRINTH STRUCTURE WHICH IS A SIMPLE SEAL STRUCTURE. IN ADDITION, A SEAL MEMBER WHICH MIGHT BE PROVIDED BETWEEN THE OPENING PORTION OF THE SMALL THING STORING PORTION AND THE SEAT CAN BE OMITTED, SO THAT THE COST PERTAINING TO THE SEAL STRUCTURE CAN BE SUPPRESSED.(FIG 14) |
