Efficient high-performance moving-iron telephone receiver

Abstract

The invention discloses an efficient high-performance moving-iron telephone receiver, which comprises an electromagnetic shielding shell, a diaphragm and a magnetic drive mechanism, wherein the diaphragm is fixed in an inner cavity of the electromagnetic shielding shell and is used for dividing the internal cavity of the electromagnetic shielding shell into a front cavity and a rear cavity; the magnetic drive mechanism comprises a connecting rod, a tongue, an iron edge, a magnet, a coil and a PCB board; a connecting rod hole is arranged at a non-end part of the diaphragm; one end of the connecting rod is connected to the tail end of a free end of the tongue and the other end of the connecting rod penetrates through the connecting rod hole and is connected to the diaphragm; a connecting position of the connecting rod and the diaphragm is not arranged on two ends of the diaphragm, the amplitude of the diaphragm is effectively improved under the same vibration amplitude of the tongue and the connecting rod, so that the output sensitivity and the efficiency of the telephone receiver are improved to help to reduce distortion of the moving-iron telephone receiver.

Description

technical field [0001] The invention designs a high-efficiency and high-performance moving iron receiver. Background technique [0002] The moving iron receiver is a highly efficient sound-generating component, mainly used as the sound output component of hearing aids, earphones and other products. Working principle: Under the action of audio current, the reed in the magnetic field will move up and down, thus driving the diaphragm to vibrate up and down to make sound. [0003] The diaphragm of the receiver is a lever-like mechanism, such as figure 2 As shown, the diaphragm includes a diaphragm frame and a diaphragm. One end of the diaphragm is connected to the diaphragm frame, and the other end vibrates freely up and down, thereby driving the air to vibrate. Divide the diaphragm into three sections A, B, and C according to the length, and the diaphragm forms a connection point at the end of the C region, similar to the hinge method. The connecting rods of the traditional r...

AI Technical Summary

Problems solved by technology

Divide the diaphragm into three sections A, B, and C according to the length, and the diaphragm forms a connection point at the end of the C region, similar to the hinge method. The connecting rods of the traditional receiver are connected to the A region of the diaphragm. The defect is that the diaphragm Constrained by the lever mechanism, the vibration amplitude of the diaphragm is not maximized under the same connecting rod vibration amplitude

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