Woodwind instrument with key mechanism perfectly closing holes

摘要

A woodwind instrument has a key mechanism provided on a tube, and a player selectively closes and opens holes formed in the tube through a fingering; the key mechanism includes keys corresponding to the holes, and each of the key has an automatic regulator for uniformly pressing a pad washer to a pad received in a pad cup so that, even if the pad cup is inaccurately fixed to a linkage of the key mechanism, the hole is surely closed with the pad.