Abstract: An electronic device includes a microphone, a microphone holder holding the microphone therein, and a case encasing the microphone holder therein. The microphone holder has a first portion at which the microphone holder makes contact with a first inner surface of the case, and a second portion at which the microphone holder makes contact with one of a part of the electronic device and a second inner surface of the case facing the first inner surface, the microphone holder being sandwiched between the first inner surface and the part. At least one of the first and second portions of the microphone holder is disposed more outwardly than an outer edge of the microphone in a plane which is in parallel with the first inner surface.

Abstract: There is provided a piezoelectric actuator and the like capable of efficiently transmitting vibration between an object (e.g., a housing of an electronic device) and a piezoelectric ceramic vibrator. The piezoelectric actuator 50A includes a piezoelectric ceramic vibrator 15 and a holder 12 to hold an edge section thereof and functions as, for example, a vibrator by propagating deflective vibration of the vibrator 15 via the holder 12 to an elastic body 14 as the object. A subsidiary holder 13 is disposed between the vibrator 15 and the elastic body 14, and part of the deflective vibration of the vibrator 15 is propagated via the elastic body 14.

Abstract: There is provided a piezoelectric actuator and the like capable of efficiently transmitting vibration between an object (e.g., a housing of an electronic device) and a piezoelectric ceramic vibrator. The piezoelectric actuator 50A includes a piezoelectric ceramic vibrator 15 and a holder 12 to hold an edge section thereof and functions as, for example, a vibrator by propagating deflective vibration of the vibrator 15 via the holder 12 to an elastic body 14 as the object. A subsidiary holder 13 is disposed between the vibrator 15 and the elastic body 14, and part of the deflective vibration of the vibrator 15 is propagated via the elastic body 14.

Abstract: An electronic device includes a microphone, a microphone holder holding the microphone therein, and a case encasing the microphone holder therein. The microphone holder has a first portion at which the microphone holder makes contact with a first inner surface of the case, and a second portion at which the microphone holder makes contact with one of a part of the electronic device and a second inner surface of the case facing the first inner surface, the microphone holder being sandwiched between the first inner surface and the part. At least one of the first and second portions of the microphone holder is disposed more outwardly than an outer edge of the microphone in a plane which is in parallel with the first inner surface.