| 摘要 |
PROBLEM TO BE SOLVED: To improve both of concentricity and connection strength of a lower inner case in a double box type water meter including the lower inner case of division structure.SOLUTION: A lower inner case Kis configured by integrally assembling three members that are a lower member A, an intermediate member B and an upper member D, respective nozzles Nand Nof inflow and outflow are formed respectively on a lower part and an upper part of a peripheral wall 42 in an assembled state, a plurality of through connection projection bodies 18 erected and formed at an outer peripheral part of the lower member A are made to pass through a through-hole 22 formed at an outer peripheral part of the intermediate member B, an upper end of each through connection projection body 18 is inserted to an insertion hole 33 formed at an outer peripheral part of the upper member D, and thus the three members A, B and D are integrally assembled. |
