Loudspeaker, loudspeaker device and mobile terminal

A loudspeaker device, comprising

• a box body defining a sealed volume chamber,
• a loudspeaker fixed in the sealed volume chamber and comprising:
• a frame having an outer circumferential side wall, an inner circumferential side wall arranged opposite to the outer circumferential side wall, and an acoustic output hole penetrating the outer circumferential side wall and the inner circumferential side wall;
• a diaphragm having a periphery directly connected with the frame along a circumferential direction and fixed to the inner circumferential side wall, and partitioning an inside space of the frame into a first cavity body and a second cavity body;
• a cover plate fixed to the frame and arranged opposite to the diaphragm and closing the second cavity body, and
• a drive assembly comprising a first driving member fixed to the diaphragm and a second driving member, the first driving member being vibratory relative to the second driving member to drive the diaphragm to vibrate, thereby emitting a sound wave and making the sound wave pass through the acoustic output hole;
• wherein the first driving member and the second driving member are both fixed in the first cavity body, and the acoustic output hole runs through the second cavity body.

A mobile terminal, comprising:

• a housing having a bottom end;
• a mainboard fixed in the housing;
• and
• a box body defining a sealed volume chamber;
• a loudspeaker fixed in the sealed volume chamber and fixed to the bottom end and comprising:
• a frame having an outer circumferential side wall, an inner circumferential side wall arranged opposite to the outer circumferential side wall, and an acoustic output hole penetrating the outer circumferential side wall and the inner circumferential side wall;
• a diaphragm having a periphery directly connected with the frame along a circumferential direction and fixed to the inner circumferential side wall, and partitioning an inside space of the frame into a first cavity body and a second cavity body;
• a cover plate fixed to the frame and arranged opposite to the diaphragm and closing the second cavity body;
• and
• a drive assembly comprising a first driving member fixed to the diaphragm and a second driving member, the first driving member being vibratory relative to the second driving member to drive the diaphragm to vibrate, thereby emitting a sound wave and making the sound wave pass through the acoustic output hole;
• wherein the first driving member and the second driving member are both fixed in the first cavity body and the acoustic output hole runs through the second cavity body.