| 摘要 |
<p>An electrodynamic loudspeaker device comprising a chassis (1), a translatable body (3) and an actuator (11) arranged for moving the translatable body (3) with regard to the chassis (1). The translatable body (3) is provided with (1) a three-dimensional diaphragm body (5) having a contour (5<SUB>C</SUB>), a diaphragm base part (5<SUB>b</SUB>) and a diaphragm top part (5<SUB>t</SUB>) which is wider than said base part (5<SUB>b</SUB>), an axial axis (5<SUB>a</SUB>) extending from the one part to the other part and (2) a support body (7). The support body (7) has a bound support end portion (7<SUB>b</SUB>) fixed to the diaphragm base part (5<SUB>b</SUB>) and a free support end portion (7<SUB>f</SUB>) and extends substantially parallel to the axial axis (5<SUB>a</SUB>) and at least partly inside a space (9) enveloped by the contour (5<SUB>C</SUB>) of the diaphragm body (5). The actuator (11) comprises a stationary actuator part (11<SUB>S</SUB>) supported by the chassis (1) and a movable actuator part (11<SUB>m</SUB>) supported by the support body (7) and sited between both support end portions. These actuator parts are arranged for magnetically cooperating with each other across an air gap (13). The diaphragm top part (5<SUB>t</SUB>) is secured to the chassis (1) by means of a flexible suspension means (15) and the free support end portion (7<SUB>f</SUB>) is suspended from the chassis (1) by means of a flexible centering means (17) in order to provide a flat and during operation stable and resonance free device.</p> |
