MULTIFUNCTION TYPE VIBRATION ACTUATOR AND PORTABLE COMMUNICATION EQUIPMENT

摘要

[PROBLEMS] To provide a multifunction vibration actuator capable of satisfactorily maintaining tone quality and output by increasing frequency band with an elliptic diaphragm, reducing labor and cost in assembly, and increasing the space efficiency thereof in equipment in which the actuator is mounted. [MEANS FOR SOLVING PROBLEMS] This actuator comprises a housing (1) having a first house part (1a) with an elliptic wall (10) and a second house part (1b) having a cylindrical wall (11) of such a diameter as to correspond to the first house part (1a) at the lateral center of the ellipse thereof which are formed integrally with each other at both bottom walls (1c) and (1d) of the first housing part (1a). The actuator also comprises an elliptic diaphragm (3) having an annular voice coil (3) installed on the inner surface thereof, a circular magnetic circuit part (4), and a disk type suspension (5). The elliptic diaphragm (3) is tensely installed in the wall of the first house part (1a) and the circular magnetic circuit part (4) is installed in the cylinder of the second house part (1b) with the suspension (5).