Loudspeaker module group

A speaker module and speaker technology, applied in the direction of frequency/direction characteristic devices, etc., can solve the problems of reducing the low-frequency bandwidth of the speaker module, reducing the high-frequency bandwidth of the speaker module, reducing the sensitivity and output power of the speaker module, etc. Achieve the effect of improving sensitivity and output power, and improving acoustic performance

Active Publication Date: 2013-10-16
GOERTEK INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The reduction in the thickness of the speaker unit will lead to a reduction in the size of its internal acoustic components, which will reduce the sensitivity and output power of the speaker module, thereby reducing the acoustic performance of the speaker module; the increase in the front cavity will reduce the speaker module. High-frequency bandwidth, the reduction of the rear cavity will reduce the low-frequency bandwidth of the speaker module, resulting in distorted sound from the speaker module, etc.
[0005] 2. If the thickness of the speaker unit and the volume of the rear acoustic cavity of the speaker module are constant, the foam will not only reduce the high-frequency bandwidth of the speaker module, but also increase the thickness of the speaker module after pasting the foam. Can not meet the trend of thin speaker module development

Method used

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  • Loudspeaker module group
  • Loudspeaker module group
  • Loudspeaker module group

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Such as figure 1 and figure 2 Commonly shown, a loudspeaker module includes a front shell 10a and a rear shell 40 combined into one, the front shell 10a and the rear shell 40 enclose a module cavity, and the module cavity is divided into two parts, one of which is smaller The loudspeaker unit 20 is accommodated in the cavity, and the larger cavity on the other side is the rear acoustic cavity, and the loudspeaker unit 20 and the rear acoustic cavity are horizontally arranged side by side. The periphery of the speaker unit 20 is provided with an annular convex edge 21 extending to the outside of the speaker unit 20, and an annular boss portion 12a is provided in the front shell 10a. The boss portion 12a is integrally structured with the front shell 10a, and the boss portion The end surface of 12a is lower than the opening end surface of front case 10a. The end surface of the convex edge 21 relative to the bottom of the front shell 10a is defined as the front end surfa...

Embodiment 2

[0040] Such as Figure 5 As shown, this embodiment is basically the same as Embodiment 1, the difference is:

[0041] The convex edge 21 is arranged on the end of the single shell 22b close to the vibration system. The front shell 10b is provided with an annular boss portion 12b. The housing 22b has an integral structure.

[0042] In this embodiment, the single shell 22b is a plastic shell; the single front cover 24a may be a plastic front cover or a metal front cover.

Embodiment 3

[0044] Such as Figure 6 As shown, this embodiment is basically the same as Embodiment 1, the difference is:

[0045] The convex edge 21 is arranged on the single front cover 24b, the front end surface of the convex edge 21 is flush with the end surface of the single front cover 24b relative to the bottom of the front shell 10c, and the front end surface of the convex edge 21 is sealed and combined with the bottom of the front shell 10c. The convex edge 21 is integrated with the single front cover 24b.

[0046] In this embodiment, the single shell 22c is a plastic shell; the single front cover 24b is a plastic front cover. In this embodiment, the structure of the front shell 10c is simpler and easier to process, and the volume of the rear acoustic cavity is larger and the acoustic performance is higher.

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Abstract

The invention, which relates to the technical field of electroacoustic products, discloses a loudspeaker module group comprising a front shell and a rear shell, wherein the front shell and the rear shell are combined into one. A single loudspeaker body is accommodated in a module group inner cavity formed by enclosing of the front shell and the rear shell. An annular protruding edge that is extended towards the outer side of the single loudspeaker body is arranged at the periphery of the single loudspeaker body; one end surface of the protruding edge is sealed and combined with the front shell; and the end-surface structure of the protruding edge is matched with a surface structure, at the combination position, of the front shell. According to the loudspeaker module group provided by the invention, an acoustic short circuit phenomenon can be effectively prevented; the size of a front acoustic cavity is reduced; high-frequency response with a wide frequency band is realized; and the acoustic performance is high.

Description

technical field [0001] The invention relates to the technical field of electroacoustic products, in particular to a loudspeaker module. Background technique [0002] The speaker module is an important acoustic component in portable electronic equipment. It is used to convert electrical energy into sound energy. It is the sound-generating component of portable electronic equipment. However, there is a technical problem that will seriously affect the acoustic performance of the speaker module. Those skilled in the art call this an "acoustic short". "Acoustic short circuit" means that the sound waves radiated from the front and back of the speaker diaphragm have a phase difference of 180°. Group acoustic performance. [0003] In order to overcome the technical problem of the above-mentioned acoustic short circuit, those skilled in the art usually stick a compressible foam between the front cover of the speaker unit and the front shell of the speaker module to prevent the fron...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R1/28
Inventor 刘一韬苗青邵帅宋学平
Owner GOERTEK INC
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