| 摘要 |
A FLOOR GRATING DEVICE (100) COMPRISES A SHEET-LIKE COVER (110) BEARING A PLURALITY OF OPENINGS (112) AND AN INVERTED CAP STRUCTURE (114) EXTENDING BELOW THE COVER (110);A WATER HOLDER (130) WITH A BASE (131) PROVIDED AN ANNULAR PROJECTION (132) RAISING UPWARD DEFINING A HOLLOW PASSAGE (133) AT MIDDLE; A HOUSING (120) WITH A DRAINAGE HOLE (128) DEFINED BY TOP FACE (121 ), BOTTOM FACE (122) AND SIDE WALLS (123) FOR RECEIVING THE COVER (110) ON THE TOP FACE (121) AND A PROJECTION (127) STRETCHING HORIZONTALLY FROM THE BOTTOM FACE (122) AROUND RIM OF THE DRAINAGE HOLE (128) FOR RESTING OF THE WATER HOLDER (130);WHEREBY THE INVERTED CAP STRUCTURE (114) COUPLED WITH THE WATER HOLDER (130) FORMING A BELL TRAP THEREIN UPON SEATING OF THE COVER (11 0) ONTO THE HOUSING (120) CHARACTERIZED IN THAT A PLURALITY OF FASTENING MEANS (118) ARE USED TO SECURE THE COVER (110) ONTO THE HOUSING (120). |
