| 摘要 |
A SOUND GENERATING MECHANISM (60) INCLUDES A SOUNDING MEMBER (61), A RETAINING MEMBER (62), A SOUNDING PIN (64), AND A COIL SPRING (65). THE SOUNDING MEMBER (61) INCLUDES A DISK PORTION 61A FORMED INTO A RING SHAPE, A PLURALITY OF SOUNDING CONCAVITIES (61B) FORMED CIRCUMFERENTIALLY APART ON THE DISK PORTION (61A), AND ENGAGEMENT PORTIONS (61C) INTEGRALLY FORMED WITH THE DISK PORTION (61A). THE RETAINING MEMBER (62) PREVENTS THE SOUNDING MEMBER (61) FROM FAILING OFF. THE SOUNDING PIN (64) IS MOUNTED IN THE KNOB MEMBER (56) AT A POSITION OPPOSITE AT LEAST ONE OF THE SOUNDING CONCAVITIES (61B) SO AS TO BE MOVABLE TOWARD AND AWAY FROM THE SOUNDING CONCAVITIES (61B). THE COIL SPRING (65) URGES THE SOUNDING PIN (64) TOWARD THE SOUNDING CONCAVITIES (61B). THE SOUNDING PIN (64) IS UNLIKELY TO FALL OFF WHEN THE KNOB MEMBER (56) IS ATTACHED TO OR REMOVED FROM THE KNOB MOUNTING PORTION (52).(FIG.1)
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