Patent ID: 6853735

Claim:
A balance armature type receiver to be mounted in a portable communication device that has a display panel, comprising: a housing; a diaphragm having a circumferential edge supported by the housing; a magnetic member disposed in the housing for defining a predetermined gap and for generating a direct-current magnetic field passing across the predetermined gap; a holding member made of magnetic material for holding the magnetic member; an armature inserted into the predetermined gap, fixed at a first predetermined position to the holding member, and coupled to the diaphragm at a second predetermined position via a drive pin; a coil disposed so as to surround the armature; a sound release hole on a top surface of the housing on a same side as the display panel; and a terminal to be connected to the portable communication device on an under surface that is an opposite side of the surface provided with the sound release hole, wherein the armature is distorted in response to a signal current applied to the coil, and thereby the diaphragm is vibrated, and the housing having an outer shape of a substantially rectangular parallelepiped having a wall face almost parallel to the center axis of the armature.