Patent ID: 8899374

Claim:
A speaker unit adapted to be mounted in an opening section formed in a mounting part, the speaker unit comprising: a cabinet section having an outer peripheral side surface and a bottom surface; a speaker face provided on the bottom surface of the cabinet section; and a provisionally fastening mechanism provided on the outer peripheral side surface of the cabinet section and adapted to provisionally fasten the speaker unit with at least a part of the cabinet section inserted in the opening section from a face side of the mounting part without a human operator manually supporting the speaker unit, said provisionally fastening mechanism comprising: an engaging section adapted to make the speaker unit provisionally engage the mounting part; and an operating section exposed to the face side of the mounting part with the speaker unit engaged the mounting part via the engaging section, said operating section adapted to cancel engagement between the speaker unit and the mounting part via said engaging section in response to an operation of a portion of the operating section where the operating section is exposed.