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Loudspeaker

A loudspeaker and electro-acoustic conversion technology, applied in the field of loudspeakers, can solve problems such as energy waste, achieve the effect of enhancing sound effect, improving sound quality, and simple structure

Inactive Publication Date: 2019-02-05
WEIFANG PASADI ECONOMIC & TRADE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The aforementioned solution is only a simple use of the anti-phase sound waves introduced into the rear cavity. At the same time, not only the anti-phase sound waves but also high-frequency interference sound waves are transmitted into the rear cavity. Therefore, the sound leak hole is not only used to leak out the anti-phase sound waves It is also used to release high-frequency sound waves, which obviously causes a waste of energy

Method used

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Examples

Experimental program
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Embodiment Construction

[0029] refer to figure 1 , the existing earphones include a front shell 1, a rear shell 2 and a rear end cover 3, the rear shell 2 is fastened to the rear of the front shell 1, and the rear end cover 3 is fastened to the rear of the front shell 1 And put the rear casing 2 into it. A plurality of front sound holes 4 are provided in the center of the front housing 1, and sponge earmuffs 5 are installed on the front of the front housing 4; an electroacoustic conversion assembly is installed in the rear housing 2, including a permanent magnet 6, a yoke frame, and a coil 7 , diaphragm 5 and ring, etc., the central position of the permanent magnet 6, the central position of the rear housing 2 and the central position of the rear end cover 3 are all provided with sound leakage holes 8. When the vibrating membrane 18 vibrates, sound waves of opposite phases are generated at the front and rear respectively. The front sound wave passes through the front sound hole 4 and enters the huma...

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Abstract

The invention relates to a loudspeaker. The loudspeaker comprises a front shell, a back shell, and a back end cover; an electroacoustic conversion assembly is arranged in the back shell, the back endcover is buckled at the back part of the front shell and forms a closed back cavity; an airtight sound collecting cavity is arranged on an inner end wall of the back end cover, openings are formed attwo ends of the sound collecting cavity, and one opening is a cavity sound inlet, and the other opening is the cavity sound outlet; a sound outlet pipe is connected to the cavity sound outlet, an auxiliary sound hole is formed on the front shell, and the other end of the sound outlet pipe communicates with the auxiliary sound hole. The loudspeaker disclosed by the invention is simple in structure,convenient for implementation, and capable of improving acoustic utilization efficiency and improving the tone quality effect.

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...

Claims

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Application Information

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IPC IPC(8): H04R9/06H04R9/02
CPCH04R9/02H04R9/06
Inventor 李翰林
Owner WEIFANG PASADI ECONOMIC & TRADE CO LTD