Portable electronic apparatus

#This application claims the priority benefit of Taiwan application serial no. 97216132, filed on Sep. 5, 2008. The entirety of the above-mentioned patent application is hereby incorporated by reference herein and made a part of this specification.

#1. Field of Invention

#The present invention relates to an electronic apparatus and more particularly, to a portable electronic apparatus.

#The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification. The drawings illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

#FIG. 1 is a cross-sectional schematic view of a portable electronic apparatus of one embodiment of the present invention.

#FIG. 2 is a perspective schematic view of a sound box cover of FIG. 1.

#FIG. 1 is a cross-sectional schematic diagram of a portable electronic apparatus of one embodiment of the present invention. Referring to FIG. 1, a portable electronic apparatus 200 (e.g. a cellular phone) includes a case 210, a speaker 220, a sound box cover 230, and a first circuit board 240. The case 210 has a sound hole 212 and a plurality of limiting portions 214 (two are shown for illustration). A shape of the sound hole 212 is circular or conical, for example. There may also be a plurality of sound holes that are juxtaposed or disposed as concentric circles. The limiting portions 214 and the case 210 are injection molded, for example. The limiting portions 214 are disposed around the sound hole 212 and used to dispose the speaker 220 and limit the speaker 220 from movement. The speaker 220 is disposed in the case 210, between the limiting portions 214, and in correspondence with the sound hole 212.

#In other words, the speaker 220 outputs sound through the sound hole 212 on the case 210 to the outside. The sound box cover 230 covers the speaker 220 to form an enclosed space. The space among the sound box cover 230, the case 210, and the speaker 220 is a back sound chamber A1. The back sound chamber A1 may be designed based on characteristics of the speaker 220 so as to achieve optimal sound quality. The first circuit board 240 is disposed in the case 210 and electrically connected to the speaker 220. The sound from the speaker 220 is transmitted in the enclosed back sound chamber A1 so sound leakage through chinks in the case 210 (not shown) or earphone plug hole (not shown) is prevented. Therefore, superior sound quality can be obtained. Furthermore, the sound box cover 230 is an individual component which allows for convenient disassembly and thus lowered maintenance costs.

#The portable electronic apparatus 200 may further include at least a partition 250. The partition 250 disposed between the speaker 220 and the case 210 is fixed onto the case 210 with an adhesive, for example. The space among the speaker 220, the case 210, and the partition 250 is a front sound chamber A2. A material of the partition 250 is, for example, foam or rubber with shock absorption capability.