An installation structure for an acoustic transducer (50) configured to push and pull a vibrated body and having a magnetic-path forming portion (52); a vibrating unit (200); and a connector having at least one joint portion (J1, J2) configured to connect two members such that axes of the two members are inclined relative to each other by bending at the at least one joint portion, the at least one joint portion having an urging portion (61; 62; 63; 64; 65; 66; 69; 67; 68) configured to generate an urging force by which a pushing-side driving portion (UA) of a first member connected to one side of the at least one joint portion urges a pushing-side driven portion (ub, 72a) of a second member connected on another side of the at least one joint portion in a pushing direction and an urging force by which a pulling-side driving portion (DA) of the first member urges a pulling-side driven portion (db, 61 a; 72b) of the second member in a pulling direction.