RESONANCE CHAMBER OF MOBILE PHONE

Abstract

A resonance chamber of mobile phone includes a shell (11) defining a resonance cavity (20) for receiving a speaker (50) therein. A plurality of holes (18) is defined in the shell facing to a first side of the speaker. A channel (30) is defined in the shell extending laterally from a second side opposite to the first side of the speaker and communicating with the resonance cavity. An opening (40) is defined in the shell to communicate the channel with the environment. The channel has a width and a length smaller than a wavelength of an acoustic wave generated by the speaker.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is an isometric view of a mobile phone in accordance with a preferred embodiment of the present invention;

FIG. 2 is a schematic view of a first embodiment of a resonance chamber of the mobile phone of FIG. 1;

FIG. 3 is a schematic view of a typical Helmholtz resonance chamber;

FIG. 4 a schematic view of an alternative embodiment of the resonance chamber; and

FIGS. 5-8 show simulated test results of resonance frequency of the resonance chamber of FIG. 4.

Claims

1. A resonance chamber of a mobile phone, comprising: a shell defining a resonance cavity for receiving a speaker therein;a plurality of holes being defined in the shell facing towards a first side of the speaker;a channel being defined in the shell, the channel extending laterally from a second side opposite to the first side of the speaker and communicating with the resonance cavity; andan opening being defined in the shell to communicate the channel with the environment.

2. The resonance chamber of claim 1, wherein the channel is column-shaped with a circular-shaped cross section.

3. The resonance chamber of claim 1, wherein the channel is cuboid-shaped with a square-shaped cross section.

4. The resonance chamber of claim 1, wherein the channel is a triangular prism with a triangle-shaped cross section.

5. The resonance chamber of claim 1, wherein the resonance cavity is column-shaped, the channel extending from a cylinder of the resonance cavity.

6. The resonance chamber of claim 1, wherein the resonance cavity is irregularly shaped.

7. The resonance chamber of claim 6, wherein the resonance cavity includes a cuboid-shaped portion and a column-shaped portion communicating and overlapping partly with each other.

8. A mobile phone comprising: a shell comprising:an input section for inputting signals therein; andan output section defining a resonance chamber therein and an opening in a side thereof which communicates with the environment, the resonance chamber comprising a resonance cavity, and a channel having two opposite ends communicating with the resonance cavity and the opening, respectively; anda speaker being received in the resonance cavity for transforming electric signals into mechanical vibrations so as to generate sound.

9. The mobile phone of claim 8, wherein a cross section of the channel has one of the following shapes: circular, square and triangular.

10. The mobile phone of claim 8, wherein the resonance cavity is column-shaped, the channel extending from a cylinder of the resonance cavity.

11. The mobile phone of claim 8, wherein the resonance cavity is irregular-shaped, including a cuboid-shaped portion and a column-shaped portion communicating and overlapping partly with each other.

12. The mobile phone of claim 8, wherein a plurality of holes are defined at a location close to the speaker at a first side thereof, and the opening is defined in the shell at the side opposite to or perpendicular to the side in which the holes are defined.

13. A mobile phone comprising: a shell comprising:an input section for inputting signals therein; andan output section defining a resonance chamber therein and an opening in a side thereof which communicates with the environment, the resonance chamber comprising a resonance cavity, and a channel having two opposite ends communicating with the resonance cavity and the opening, respectively; anda speaker being received in the resonance cavity for transforming electric signals into mechanical vibrations so as to generate sound;wherein a transverse size and a lengthwise size of the channel are smaller than a wavelength of an acoustic wave generated by the speaker.

14. The mobile phone of claim 13, wherein a volume of the channel is smaller than that of the resonance cavity.

15. The mobile phone of claim 14, wherein the resonance cavity is column-shaped, the channel extending laterally from a cylinder of the resonance cavity.