Sound cavity, sound cavity system and mobile terminal

Abstract

The invention relates to the technical field of mobile terminals, in particular to a sound cavity, a sound cavity system and a mobile terminal. The sound cavity, the sound cavity system and the mobile terminal are used for improving playing effects of a low and medium frequency in the airtight sound cavity and improving tone quality of the mobile terminal. The sound cavity comprises a shell body and a passive radiator vibrating diaphragm, wherein the shell body is provided with a loudspeaker sound-out hole and a passive radiator open hole and the passive radiator vibrating diaphragm is used for covering the passive radiator open hole. Curved loops are arranged around the passive radiator vibrating diaphragm. The passive radiator vibrating diaphragm is used as a passive radiating sound source of the sound cavity. Because inner space of the sound cavity is not occupied by the passive radiator vibrating diaphragm, the inner space of the sound cavity can be utilized in maximum limit. Therefore, the playing effects of the low and medium frequency of the sound cavity can be improved and the tone quality of the mobile terminal can be improved. The invention further discloses a sound cavity system at the same time. The sound cavity system is provided with the sound cavity which has above characteristics. The invention further discloses a mobile terminal, and the mobile terminal is provided with the sound cavity system which has above characteristics.

Description

technical field [0001] The invention relates to the technical field of mobile terminals, in particular to a sound cavity, a sound cavity system and a mobile terminal. Background technique [0002] With the wide application of mobile phones, higher requirements are put forward for the sound quality of mobile phones; one of the important factors affecting the sound quality of mobile phones is the structure of the sound cavity of mobile phones. In order to obtain better low-frequency effects and greater loudness, most of the sound Airtight cavity structure. [0003] Such as figure 1 As shown, the airtight sound cavity includes: a housing 10 with a speaker sound outlet and a speaker 11 installed at the position of the speaker sound outlet of the housing 10; The sound wave is isolated to eliminate the acoustic short-circuit interference; however, the sound cavity of this structure is limited by the physical size of the unit and the corresponding acoustic indicators, and cannot ...

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Problems solved by technology

[0003] like figure 1 As shown, the airtight sound cavity includes: a housing 10 with a speaker sound outlet and a speaker 11 installed at the position of the speaker sound outlet of the housing 10; The sound wave is isolated to eliminate the acoustic short-circuit interference; however, the sound cavity of this structure is limited by the physical size of the unit and the corresponding acoustic indicators, and cannot obtain a better mid-low frequency playback effect, resulting in sharp sound and poor sound quality when playing on mobile phones

Especially under the development trend of ultra-thin mobile phone structure, the volume size of the sound cavity of the mobile phone is also reduced. For the same speaker unit, as the volume of the closed sound cavity of the mobile phone is reduced, the mid-low frequency playback effect of the sound cavity of the mobile phone is also reduced. Then it gets worse, which affects the sound quality of the phone

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