Loudspeaker apparatus

A loudspeaker apparatus, comprising:

• an ear hook including an elastic metal wire and a plug end disposed at one end of the elastic metal wire;
• a circuit housing configured to accommodate a circuit component or a battery, the circuit housing being connected to the ear hook;
• and
• a housing of an earphone core configured to accommodate the earphone core, the housing of the earphone core and the plug end being fixedly plugged;
• wherein
• the plug end includes an insertion portion,
• the housing of the earphone core is disposed with a socket hole communicating with an outer end surface of the housing of the earphone core,
• the insertion portion is at least partially inserted into the socket hole,
• the ear hook further includes a protective sleeve disposed on a periphery of the plug end,
• an end face of the protective sleeve facing the housing of the earphone core forms an annular abutting surface, and the annular abutting surface elastically abuts the outer end surface of the housing of the earphone core when the housing of the earphone core and the plug end are fixedly plugged.