Moving coil type loudspeaker producing sound on two sides

Abstract

The invention discloses a moving coil type loudspeaker producing sound on two sides. The loudspeaker comprises a substrate and two basin frames symmetrically arranged on two sides of the substrate. Sound producing mechanisms are respectively arranged in the basin frames. The loudspeaker is characterized in that each of the sound producing mechanisms comprises a paper basin, a magnetic conductive plate, a driving magnet and a sound coil assembly used for driving the paper basin to vibrate; each of the sound coil assemblies comprises a central guide sleeve, at least two magnetic conductive core columns and sound coils winding the outer side walls of the magnetic conductive core columns; storing grooves are arranged in the driving magnets; a guide column is fixed along the axis of each of storing grooves; the central guide sleeves slidely cooperate with the guide columns; and magnetic conductive sleeves are arranged in the storing grooves. According to the invention, the radial deviation of the sound coils during the vibration sound producing process of the sound coils is small, sound quality is quite high and when the paper basins are damaged, a user can change the paper basins by himself / herself with no need for scrapping the whole loudspeaker.

Description

technical field [0001] The invention relates to the technical field of electro-acoustic transducers, in particular to a moving-coil loudspeaker with sound from both sides. Background technique [0002] Dynamic speakers are also called dynamic speakers. Its working principle is based on Faraday's law. When a current-carrying conductor passes through a magnetic field, it will receive an electromotive force. Its direction conforms to Fleming's left-hand rule. The force, current, and magnetic field are perpendicular to each other. The magnetic flux density is directly proportional. When the voice coil is input with alternating audio current, the voice coil is subjected to an alternating driving force to produce alternating motion, which drives the paper cone to vibrate, and repeatedly pushes the air to produce sound. In the vibration process of the voice coil, reducing the deviation of the voice coil along the radial direction is an important index to ensure the sound quality....

AI Technical Summary

Problems solved by technology

[0003] However, in the prior art electric speakers, the voice coil is often directly accommodated in the central hole of the driving magnet, or the voice coil is placed outside a columnar magnetic core, and in order to reduce the friction between the voice coil and the magnet , therefore, there must be a large sliding gap between the voice coil and the magnet

This leads to a large radial deviation of the voice coil in the process of vibrating and sounding, resulting in misalignment of the sound

[0004] In addition, since the paper cone of the speaker is a part directly exposed to the external environment, it is more likely to be damaged by external forces during the user's use. With the damage of the paper cone, the entire speaker cannot be used normally and can only be scrapped. processing, thus causing a large waste

Certainly, the speakers in the prior art can also be repaired by professional maintenance personnel when the paper cone is damaged, but the repair process not only requires high labor costs, but also is relatively complicated.

Even the cost of maintenance is higher than the price of new loudspeakers, so when users encounter such problems in the prior art, they often adopt scrapping, which causes a lot of waste

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