Telephone receiver provided with improved circuit board

Abstract

The invention discloses a telephone receiver provided with an improved circuit board. The telephone receiver comprises a shell, a vibrating film, a magnetic force drive mechanism and the circuit board, wherein the shell comprises a bottom box and an upper cover; the vibrating film is arranged in the upper cover of the shell; the magnetic force drive mechanism comprises an armature, a coil and an iron core, the armature comprises a fixed portion and a vibrating energy conversion portion, the coil and the iron core are arranged on the vibrating energy conversion portion in a sleeving mode, permanent magnets are arranged on the upper side and the lower side of the vibrating energy conversion portion respectively, the permanent magnets are fixedly connected with the inner side surface of the iron core, and the vibrating energy conversion portion is in transmission connection with the vibrating film through a conduction rod; the circuit board is arranged at the outer side bottom of the shell and welded to the coil, and a frequency dividing circuit is further welded on the circuit board. The circuit board is arranged at the bottom of the outer side of the shell, the length of the telephone receiver is reduced, meanwhile, the circuit board is directly welded to the coil, the processing technology is simple, cost is lowered, the situation that the sound quality effect of the telephone receiver is affected due to cold joint, missing solder and the like is avoided, the frequency response range is wider by means of the frequency dividing circuit, invalid vibration is reduced, service life is prolonged, sound quality is improved, and the low-frequency effect is better.

Description

technical field [0001] The present invention relates to a receiver with an improved circuit board. Background technique [0002] The so-called receiver usually refers to a moving coil receiver, and its working principle (physical principle) is similar to that of a traditional moving coil speaker: a changing audio electrical signal is fed into the voice coil, and the voice coil is placed in the magnetic gap of a permanent magnet magnetic circuit Here, the voice coil vibrates up and down driven by the changing electromagnetic field force (Lorentz force) generated by the changing current, and drives the diaphragm to drive the front and rear air to generate sound waves. [0003] Although there are many other types of receivers with the principle of transduction, so far, the dynamic receiver has become a popular choice in mobile phones and fixed phones because of its high cost performance, mature production technology, varied dimensions and lead-out methods. Mainstream electro-a...

AI Technical Summary

Problems solved by technology

The electromagnetic conversion efficiency of the magnetic drive mechanism in the receiver is relatively high, and the mechanical strength of the armature is relatively high, and its resonance frequency is relatively high, so the amplification of the mid-high frequency sound signal is stronger than that of the low-frequency sound signal, resulting in mid-high The sound output of the frequency band is strong, and the sound output of the low frequency band is insufficient, so the sound of the receiver sounds cold

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