Patent ID: 8090125
Filing Date: 2012-01-03
Classification: H04R

Abstract:
1. A contact type electret condenser pickup comprising a casing provided with an accommodation chamber to contain an O-ring, a vibration part, an insulation packing, a back plate retaining ring containing a back plate, a conductive connection ring, and a circuit board horizontally placed in sequence; the O-ring, the vibration part, and the insulation packing providing a space for the vibration part to realize vibration; the back plate being electrically connected to the circuit board set through the conductive connection ring; an open end of the casing inwardly curved in radius towards the circuit board set; the O-ring, the vibration part, the insulation packing, the back plate, the back plate retaining ring, and the conductive connection ring maintaining constant contacts in the casing; the vibration part being comprised of a support and a metal sheet; and the metal sheet being fixed to the support by means of a cantilever structure.