Design of sound chamber of mobile phone

A mobile phone and sound room technology, applied in the field of sound room design, can solve the problems of adding mobile phones, poor low-frequency response effect, and insufficient space for resonance cavity, etc.

CN1658622AInactive Publication Date: 2005-08-24BENQ CORP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2005-08-24
Estimated Expiration
Not applicable · inactive patent

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Abstract

A sound chamber design of cell phones. The shell of the cell phone has a front sound hole, and a circuit board is in the internal space of the shell and divides the internal space into the first and the second sound chambers. A sounding device is in the first sound chamber and electrically connects the circuit board. The circuit plate has at least a sound through hole to link the first and the second sound chambers, to increase the volume of the resonance chamber of this sounding device and improve its low frequency response effect. In addition, the shell also has an attuning hole to link the first and the second sound chambers to the outside. The flattening of the resonance frequency curve of the whole cell phone improves the sound quality.
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Description

technical field

[0001] The invention relates to a sound room design of a mobile phone, in particular to a sound room design which improves the low-frequency response of the sound room of the mobile phone and flattens the response curve. Background technique

[0002] With the vigorous development of the communication industry, the demand for mobile phones has increased significantly. In the design of mobile phones, in order to convert electrical signals into structural vibrations to generate sound, or convert sound into electrical signals for transmission, an electro-acoustic transducer (Electro-acoustic Transducer) must be provided, such as a microphone (Transmitter), loudspeaker (Loudspeaker), in order to achieve the purpose of dissemination and communication. Among the electro-acoustic conversion components, the loudspeaker is the most widely used. The loudspeaker is a component that converts electrical signals into sound for playback. Through a special structural design...

Examples

Embodiment Construction

[0037] In the following description, in order to achieve the consistency of the technical explanation of the present invention, in different embodiments, if there are components with the same function but slightly different shapes, the same names and figure numbers are still used.

[0038] refer to Figure 4 , Figure 4 It is a schematic diagram of the first embodiment of the mobile phone of the present invention. The schematic diagram is a cross-sectional schematic diagram of the location of the sound generating device 210 in the mobile phone 200 . As shown in the figure, the shell 202 of mobile phone surrounds an interior space, has at least one front sound hole 208 on this shell 202 to make this interior space communicate with the outside world, and the opening area of ​​this front sound hole is between 1 square mm to 100 square mm. A circuit board 204 is disposed in the inner space and basically divides the inner space into a first acoustic chamber 220 and a second acou...