Patent ID: 8311244

Claim:
A speaker comprising: a base comprising a first connector and a second connector for receiving external signals, a first engaging member, and an amplifier circuit device electrically connected to the first connector and the second connector; and a thermoacoustic device comprising a second engaging member and a fourth connector, wherein the thermoacoustic device is detachably installed on the base by an engagement between the first engaging member and the second engaging member, and a fourth connector corresponds to the first connector of the base, wherein the base defines a concavity for receiving the thermoacoustic device, and the concavity defines an opening, and the first connector connects with the fourth connector through via the opening; the concavity is defined by a bottom plate and two opposite side plates extending from opposite sides of the bottom plate, and the opening of the concavity is defined through the bottom plate; a first slot is defined in one of the two side plates of the concavity; the base further comprises a fixing piece secured therein, the fixing piece comprises a hook portion extending through the first slot into the concavity to form the first engaging member which is capable of being detachablely attached to the second engaging member of the thermoacoustic device; and the fixing piece further comprises a projecting portion protruding upwardly from the bottom wall towards the hook portion, and the projecting portion is located below the opening of the concavity and holds the first connector in the opening of the concavity.