| 摘要 |
PURPOSE:To make unnecessary the two fixed poles and to reduce the cost and to increase the reliability, by providing a single flat plate shape fixed pole having the plane possible for opposition commonly with a pair of moving poles. CONSTITUTION:At the large diameter base of the cunti-lever 31, a pair of wing shape moving poles 341, 342 having a given open angle are supported via the insulator 33 by taking the direction orthogonal to the axial direction of cunti-lever as the plane. The base end of the cunti-lever 31 is supported in vibration free to the cartridge body via the tension member 35 and the holder 36, and has the flat part having the size commonly opposing to a pair of moving poles 341, 342, and a single flat shape fixed pole 37 consisting of the electret is opposingly provided. Further, from the moving poles 341, 342, the lead wire connected to the conversion circuit of L and R both channels is led. Thus, the cost is reduced and the reliability is increased. |
