Novel moving iron unit and telephone receiver comprising same

Abstract

The invention discloses a novel moving iron unit. The novel moving iron unit comprises an armature, a magnet, a coil and an iron core, the armature is sleeved with the coil and the iron core in sequence, and the magnet is arranged on the inner wall of the iron core. The armature comprises a vibrating part and magnetic conducting parts arranged on the two sides of the vibrating part, the width of the vibrating part is larger than that of the magnetic conducting parts, reinforcing ribs are arranged between the vibrating part and the magnetic conducting parts, and the cross sections of the reinforcing ribs, the cross section of the vibrating part and the cross sections of the magnetic conducting parts form a W or M structure. According to the novel moving iron unit, while it is guaranteed that the width of a magnetic circuit in the moving iron unit is increased, the structural strength of the armature can be improved, the driving force of the moving iron unit can be increased, finally, the vibrating force of the armature can be increased, the sound volume of a telephone receiver can be increased, and the tone quality can be improved.

Description

technical field [0001] The invention relates to the field of receivers, in particular to a novel moving iron unit and a receiver including it. Background technique [0002] Moving iron has many advantages, such as good sound insulation effect of moving iron, smaller and lighter volume, higher sensitivity than moving coil, more stable frequency response curve of moving iron, etc. Moving iron earphones also help to protect hearing, so moving iron is widely used in the earphones. An important key to determine the quality of the moving iron is its own structure. When the moving iron is used in the receiver, under the same size cavity and volume, the wider the magnetic circuit of the moving iron, the greater the driving energy. [0003] However, the structure of the traditional moving iron unit, after improving the structure of the moving iron, can provide a wider magnetic circuit for the moving iron, but due to its structural shortcomings, it cannot guarantee the strength and s...

AI Technical Summary

Problems solved by technology

[0003] However, the structure of the traditional moving iron unit, after improving the structure of the moving iron, can provide a wider magnetic circuit for the moving iron, but due to its structural shortcomings, it cannot guarantee the strength and service life of the moving iron itself. Low; after long-term use, the vibration force of the moving iron itself will be insufficient, which will eventually affect the vibration effect of the moving iron, so that the loudness of the receiver's sound will become smaller and smaller

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