| 摘要 |
PROBLEM TO BE SOLVED: To manufacture a urea water tank including a sealing structure easily securing water tightness without requiring fastening of bolt and the like when a unit installation plate used for installation of a pipe sensor unit is fixed on a resin tank body.SOLUTION: The urea water tank includes: the resin tank body 1 formed in a box shape, having an opening part 5 on an upper surface part thereof, and storing urea water; the unit installation plate 6 provided with a resin plate retention part 6b on an outer circumference of an annular metal plate 6a, provided with one or more notch parts 6c on an inner circumference edge, and welded on a circumference edge of the opening part 5 by the plate retention part 6b; and the pipe sensor unit 4 having sensors 3 and pipes 2 installed through a unit body 4a, and detachably and attachably inserted and fitted in the unit installation plate 6 by making a projection part 4b projectingly provided on the outer circumference pass through the notch part 6c and rotate. |
