| 摘要 |
PURPOSE:To attain the adjustment of position of an inter-music sensor, by holding the sensor to a head shell, fitting a screw to a coupling section of a holder and the shell, turning a screw and adjusting the position. CONSTITUTION:A head shell 1 is fitted to the tip of a pickup arm (not shown), and the inter-music sensor 3 is held to a cartridge 2 closely. The sensor 3 comprising a light emitting element 4 and a photodetector 5 is held to a holder 6 to detect the inter-music from the difference of reflected light between the inter- music and the signal section. The holder 6 is inserted with an insertion nut 10 for the through-hole at one end, a screw 11 is screwed and energized with a spring 12, and the position of the holder 6 is adjusted by tightening a nut 13. At a shaft 8 of opposite side, eccentric cams 9a, 9b are coupled to channel shape coupling sections 71, 7b of the holder 6 and held movably toward the axial direction. Thus, the inter-music sensor is adjusted to a position detecting the inter-music accurately. |
