| 摘要 |
PROBLEM TO BE SOLVED: To prevent the occurrence of a backlash after connection, by improving adhesion between two connectable boxes.SOLUTION: A connection box includes a fitting section (16) having protrusions (17A, 17B), disposed on one wall (4) of two connectable boxes (2, 3), and grooves (18A, 18B) disposed on another wall (10) of the two boxes (2, 3) in a manner to fit to the protrusions (17A, 17B). On the inner surface of the grooves (18A, 18B) or the outer surface of the protrusions (17A, 17B), there are provided ribs (19A, 19B) which contact to the protrusions (17A, 17B) or the grooves (18A, 18B) in at least one vertical direction and least one lateral direction thereof, after the fitting to the protrusions (17A, 17B) and the grooves (18A, 18B) is completed.SELECTED DRAWING: Figure 1 |
