| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To dispense with the circumferential turning of a seal member in the detachment of a lid, and to enable the lid to be easily detached even if the seal member is fixed. <P>SOLUTION: This pit 10 comprises a pit body 12 with an inspection hole 24, the lid 14 which is attached to the inspection hole 24, and a holding member 16 for holding the lid 14. The pit is installed, for example, under a floor (100), so as to connect a drainage branch pipe (102) for discharging wastewater from household equipment with a drainage main (106) for discharging the wastewater to the outside. The lid 14 is fitted with the seal member 68, and attached to the inspection hole 24 in the watertight and airtight way. In addition, the holding member 16 is attached to the pit body 12 by utilizing bayonet coupling etc. , so as to hold the lid 14 in cooperation with the pit body 12 and prevent the lid 14 from inadvertently coming off the pit body 12. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
