Patent ID: 8345915
Filing Date: 2013-01-01
Classification: H04M,H04R

Abstract:
1. A multi-functional subminiature speaker that generates vibration for the functions of bone conduction, bodily sensation of vibration, speaker attachment, and vibration mode over the whole outside of a housing unit of the multi-functional subminiature speaker without any projections, comprising: an acoustic portion unit detachably mounted between a side frame and a front protector for carrying out the acoustic speaker function, the acoustic portion unit including an acoustic plate and a voice coil; the housing unit for generating the vibration over the whole outer surface thereof, and the housing unit including the front protector, a rear cover, a vibration coil support frame, and the side frame; a vibration weight unit secured to the vibration spring to perform the vibrating movement, the vibration weight unit including a rivet shaft, a central magnet, an external magnet, an outer top plate, an inner top plate, and a yoke; a PCB terminal adhesively mounted at the lower one side of the vibration coil support frame, for applying an electrical signal separately or concurrently to the voice coil and the vibration coil; a cylindrical vibration coil mounted fixedly at the lower side of the inner end of the frame vertically, for vibrating the vibration weight unit by generating magnetic force in response to the external electrical input signal through the PCB terminal; and a corrugated round plate-type vibration spring for providing the vibration weight unit with elastic force of the vibrating movement after the central and external magnets are affected by the magnetic force generated from the vibration coil, the vibration spring being secured at an outer end thereof to the side frame of the housing unit, and being secured at an inner end thereof to the rivet shaft.