| 摘要 |
<p>A loudspeaker unit which can reproduce high-level sounds while having a thin structure. The loudspeaker unit is constituted in such a way that a damper (5) is positioned inside the magnetic gap (1d) of a field section, the free end (5a) of the damper (5) is fitted to a diaphragm (7) fitted to the top section of a voice coil bobbin (3a), and the coil (3) is held in the magnetic gap (1d) by means of the damper (5) through the diaphragm (7). The hole formed of the internal surfaces of a plate (1c) and a magnet (1a) is used as the space (1e) in which the damper (5) can move. Therefore, the thickness of the speaker unit can be reduced, because there is no need of the spacial allowance for the downward displacement of the damper (5) above the field section. In addition, the horizontal deflection of the lower end section of the coil (3) becomes smaller and the lower end section is prevented from coming into contact with the field section even when rolling occurs, because the distance from the damper (5) to the lower end section of the coil (3) becomes shorter. Therefore, the unit can reproduce high-level sounds.</p> |
