MULTIFUNCTIONAL DEVICE FOR GENERATING VIBRATION AND SOUND

摘要

PURPOSE: A multifunctional device for generating vibration and sound is provided to improve the performance of the vibration and the sound of a cellular phone by installing an improved multifunctional device at the cellular phone. CONSTITUTION: A coil(15) is installed at a lower side of a diaphragm(16). The diaphragm is fixed to an inner face of an upper portion of a case(18). The first magnet(12) of the outside of the coil and the second magnet(12') of the inside of the coil are fixed to a yoke(11). An elastic member is installed between the outside of the yoke and a predetermined point of the inside of a case(17). A plurality of covers(13) are installed on an upper portion of the first magnet and an upper portion of the second magnet in order to form a magnetic circuit. The elastic member is installed between the outside of the cover of the first magnet and the predetermined point of the inside of the case in order to increase the vibration force.