Loudspeaker

Abstract

The invention relates to an earphone, which comprises a front shell, a rear shell and a rear end cover, wherein an electro-acoustic conversion assembly is installed in the rear shell. The earphone ischaracterized in that the rear end cover is buckled on the front shell to form a closed rear cavity; a plurality of rear sound holes are formed on the rear end wall of the rear shell; a sleeve is sleeved on the rear shell; a vibration piece is packaged at the rear end of the sleeve; a through hole is formed at the center of the vibration piece and communicates with the rear cavity; the front shellis provided with a plurality of front auxiliary sound holes in communication with the rear cavity; the vibration piece is connected with a vibration ring sleeved outside the rear shell; and the innerend wall of the rear end cover is provided with an auxiliary vibration piece. The loudspeaker is simple in structure and convenient to implement, and can improve the sound wave utilization rate as well as the tone quality.

Description

technical field [0001] The invention relates to a loudspeaker. Background technique [0002] The speaker is an electro-acoustic conversion product. For a dynamic speaker, its working principle is: the coil (voice coil) of the speaker is connected to an AC audio current, and an alternating magnetic field is generated around the coil. Since the coil is located in the speaker's own In the magnetic field of the permanent magnet, therefore, the two magnetic fields generate an interaction force, causing the coil to vibrate with the amplitude of the audio current. In the speaker, the coil and the diaphragm are integrated, and the diaphragm follows the vibration of the coil to produce sound, thereby completing the electrical signal to the machine. Vibration conversion. [0003] The structure of the existing loudspeaker is taken as an example with earphones, such as figure 1 As shown, it includes a front housing 1, a rear housing 2 and a rear end cover 3, the rear housing 2 is fast...

AI Technical Summary

Problems solved by technology

[0004] The traditional view is that the mixing of anti-phase sound waves and normal-phase sound waves will cancel each other, which will affect the sound quality and cause interference. Therefore, it is necessary to set up sound leakage holes on the structure

Obviously, this kind of processing will obviously cause waste of energy, and will produce noise caused by anti-phase sound wave leakage at the rear of the speaker

Images