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    • 3. 发明申请
    • ELECTROACOUSTIC TRANSDUCER BEING ACOUSTICAL TIGHT IN THE AREA OF ITS AIR GAP FOR ITS MOVING COIL
    • 电声换能器在其空气间隙区域内的声学紧密度,用于其移动线圈
    • WO02065810A3
    • 2002-12-12
    • PCT/IB0200436
    • 2002-02-13
    • KONINKL PHILIPS ELECTRONICS NVRENNER HEINZ
    • RENNER HEINZ
    • H04R9/02H04R1/24H04R9/04H04R9/10
    • H04R9/045H04R9/10
    • A transducer (1) with a transducer axis (2), with a membrane (3), with a magnet system (6) having an outer magnet system part (7) and an inner magnet system part (8), with a moving coil configuration (27) connected to the membrane (3) and having a coil carrier (28) and a moving coil (29) held by the coil carrier (28) in an air gap (14) between the two magnet system parts (7, 8), and with guide means (36) for a rectilinear guidance of the moving coil configuration (27) parallel to the transducer axis (2), wherein the moving coil configuration (27) has a cylindrical boundary surface (42) which together with a cylindrical boundary surface (15) of the outer magnet system part (7) delimits a cylindrical gap (43) which is acoustically impermeable above a lower limit frequency of at most 100 Hz.
    • 本发明涉及一种具有换能器轴(2)和换能器膜(3)的换能器(1),换能器(1)具有带外部磁体系统部分(7)和内部磁体系统部分(8)的磁体系统(6) 在两个磁体系统部分(7,7)之间的气隙(14)中连接到隔膜(3)并且具有线圈支架(28)和由线圈支架(28)保持的移动线圈(29) (27)具有圆柱形边界表面(42),所述圆柱形边界表面(42)与所述传感器轴线(2)平行地引导所述运动线圈结构 外磁体系统部件(7)的圆柱形边界表面(15)限定了圆柱形间隙(43),该间隙在高于100Hz的下限频率时在声学上不可渗透。