| 摘要 |
PURPOSE:To bring a receiver into contact with an ear of a user in a suitable state and to bring optionally a microphone to a position preferable to the user by adopting the structure that a microphone arm is turned optionally in the upper/lower/left/right directions while the receiver contacts the ear. CONSTITUTION:A shart 10 is fitted to a tip of a shaft mounting body 9 fitted to one end of a head belt 8. A receiver mounting body 12 is formed cylindrically and fitted to the shaft 10 through a through-hole 12b. A spherical body 11a formed to the back center of the receiver 11 is inserted to a spherical bearing 12a formed on the center of one face of a receiver mounting body 12. A grip 16 is fitted to a cylindrical shaft 17 formed on the center of other face opposite to the receiver mounting body 12 in the through-hole formed on the back face end. A microphone 20 is provided at the tip of a microphone arm 21 and the end is fixed to the grip 16. The grip 16 is turned around the cylindrical shaft 17, the receiver 11 is supported by the spherical bearing 12a and moved radially and since the receiver mounting body 12 is moved freely by the shaft 10, the microphone 20 is moved in upper/lower/left/right directions.
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