To provide a small-sized, high-productivity, and high-reliability portable information apparatus, by enabling elements to be soldered en block by reflow on a board, enabling them to be mounted with high efficiency, enabling them to be mounted in high density, and materializing to give high impact resistance to a motor and its coupling part, in a vibration motor used in a portable information apparatus.
This device has an outer shell consisting of the bottom, the side, and the top, and the bottom is opposed adjacently to the board of the apparatus, and has a plurality of lands 2a and 2e having functions of being mechanically or electrically joined with the board of the apparatus on the bottom side. The device is equipped with a stator 1, a bearing device 3, and a rotor 4 inside the outer shell. The stator 1 has a stator core 6 and a coil 7 wound thereon, the rotor 4 has a magnet 13 and born with the bearing device 3 and surrounds the stator rotatably, and further the rotor 4 is equipped with a circular weight 14.
FUJINAKA HIROYASU
UMEHARA MIKIO
SATO NORIYOSHI
