| 摘要 |
This invention relates to a clamping structure for clamping air- tight a flexible rubber mouthpiece (1) with an open end (12) of a receptacle (10) in a nursing device. Specifically, in a clamping structure for clamping a flange (2) for fitting a flexible rubber mouthpiece (1) between an open end (12) of a receptacle (10) and an inside flange (8) of a clamping cap (5) threadedly engaged with the periphery of the end portion (open end 12) of the receptacle (10), the invention relates to the improvement wherein an annular engaging projection (9) provided on the inside flange (8) is engaged with one of annular engaging grooves (3, 4) provided on both surfaces of the mouthpiece fitting flange (2), and the open end of said receptacle (10) is engaged with the other (4).
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