| 摘要 |
PURPOSE: An armature type speaker is provided to prevent interference between the movable terminal of a core and a pair of permanent magnets, thereby enabling low-frequency and high-power regeneration. CONSTITUTION: A fixed end (32) of a cantilever type core (30) is fixed to the inner surface of a housing (20). A coil (40) is installed to a movable terminal (34) of the core. A diaphragm (60) is connected to the moving terminal of the core with a connection pin (50). A pair of permanent magnets (70) is disposed in the periphery of the movable terminal to form a fixed magnetic field. The permanent magnets are spaced apart from the end of the movable terminal at a fixed interval, not the top, bottom, left, and right area of the movable terminal so that the permanent magnets cannot interfere with the movable terminal in the event of vibration. The end of the movable terminal is positioned on the boundary of the pair of permanent magnets. |
