Abstract: The inhaler has a medicine atomizing means 10, a nozzle 12 for discharging medicine atomized by said medicine atomizing means 10, and a gripping casing 14. Said casing 14 has a small-diametered cylindrical section 14a, a large-diametered cylindrical section 14b, and a bottom 14c, and is formed so as to have a bottom with its upper end side open. Furthermore, the same has a roughly gourd-shaped cross-section which connects said small-diametered cylindrical section 14a and said large-diametered cylindrical section 14b at the side thereof. Said medicine atomizing means 10 is incorporated in the large-diametered cylindrical section 14b side of the casing 14, and has a piezoelectric vibrator 10a and a vibration liquid.

Abstract: A rectifying section 48 is disposed between a medicine atomizing means and a nozzle. Said rectifying section 48 has a flange portion 48a fitted to the upper end side of said atomizing means, a guide cylindrical section 48b integrally provided on the inner circumference of said flange portion 48a, a dome section 48c fixed on the inner circumferential face of said guide cylindrical section 48b, and a pair of slit holes 48d installed at the corresponding position of the guide cylindrical section 48b. Said dome section 48c is composed of a largespherical section 481c and a small-spherical section 481b, wherein the large-spherical section 481c is disposed on the center axis of the guide cylindrical section 48b and is formed with a diameter by which the outer circumferential edge thereof is spaced from the inner circumferential face of the guide cylindrical section 48b.

Abstract: A switch 70 is provided between the gripping casing of an atomizer and the cover thereof. Said switch 70 has a switch accommodating section 72 secured at the cover member 16, a switch operating section 74 protruding on the inner circumferential face of said cover, and a switch body 76 accommodated in said switch accommodating section 72. Said switch accommodating section 72 is formed to be square-tubular with both the ends thereof open, said switch operating section 74 is provided at the switch accommodating section 72 corresponding to the position thereof, and a waterproof cover 78 which is able to cover the outer circumference of the switch accommodating section 72 is provided at the lower end of the switch operating section 74. Said switch body 76 has a constantly open type switch mechanism 76a having a pair of contacts spaced from each other in a constant state, a rod 76b interlocked with the switch mechanism 76a and a spring 76c which presses the rod 76b upward.