Abstract: A fixing structure is provided. The fixing structure comprises a first housing, a rotating shaft, a second housing and a third housing. The first housing has an accommodating portion, and the rotating shaft is disposed in the accommodating portion. The second housing is disposed on one side of the rotating shaft. The third housing is disposed on the other side of the rotating shaft and covers the rotating shaft and the second housing. The shaft body is wedged into a shaft bore, and the shaft shoulder is wedged into the second housing. The third housing is against one side of the shaft body, and covers the rotating shaft and the second housing. The shaft shoulder is firmly against the second housing. Thus, it does not need any tool to assemble and disassemble.

Abstract: A portable electronic apparatus including a case, a speaker, a sound box cover, a first circuit board and a second circuit board is provided. The case has a sound hole and a plurality of limiting portions disposed around the sound hole. The speaker corresponding to the sound hole is disposed in the case. The sound box cover covers the speaker to define a back sound chamber among the sound box cover, the case and the speaker. The first circuit board is disposed in the case. The second circuit board with a first surface, a second surface and a plurality of pads is disposed on the sound box cover. The second circuit board is exposed on the sound box cover with the first surface. The second circuit board electrically connects to the first circuit board and the speaker through the pads respectively disposed on the first and the second surface.

Abstract: A fixing structure is provided. The fixing structure comprises a first housing, a rotating shaft, a second housing and a third housing. The first housing having an accommodating portion, and the rotating shaft is disposed in the accommodating portion. The second housing is disposed on one side of the first housing. The third housing is disposed on the other side of the first housing and covering the rotating shaft and the second housing. The shaft body is wedged into a shaft bore, and the shaft shoulder is wedged into the second housing. A third housing is against one side of the shaft body, and covering the rotating shaft and the second housing. The shaft shoulder is firmly against the second housing. Thus, it does not need any tool to assemble and disassemble.

Abstract: A portable electronic apparatus including a case, a speaker, a sound box cover, a first circuit board and a second circuit board is provided. The case has a sound hole and a plurality of limiting portions disposed around the sound hole. The speaker corresponding to the sound hole is disposed in the case. The sound box cover covers the speaker to define a back sound chamber among the sound box cover, the case and the speaker. The first circuit board is disposed in the case. The second circuit board with a first surface, a second surface and a plurality of pads is disposed on the sound box cover. The second circuit board is exposed on the sound box cover with the first surface. The second circuit board electrically connects to the first circuit board and the speaker through the pads respectively disposed on the first and the second surface.

Abstract: A mobile communication device includes a covering lid assembled to on a main body. The lid has a reception room and a pivot seat seated in the reception room. A slide button is mounted on the lid and is exposed from the reception room. An urging member is attached to the slide button to provide a restorative force. A hooking tongue is fixed to the slide button and is received within the reception room for engaging with and disengaging from an engaging member in the main body. A pivot unit is fixed to the slide button and extends slidably into the pivot seat of the lid. Movement of the button relative to the lid after pressing the button against the urging member results in engagement between the hooking tongue and the engaging member and disengagement between the hooking tongue and the engaging member.