To provide a magnetostrictive pump with a simple structure, capable of feeding out fluid with high accuracy at high speed while realizing miniaturization, cost reduction, reduction in the number of components or the like.
The magnetostrictive pump 10 comprises an approximately cylindrical casing 12, an approximately bar-shaped super-magnetostrictive member 14 arranged inside an inner side space 12A of the casing 12, and first to fourth electromagnetic coils 16A to 16D applying predetermined magnetic field to the super-magnetostrictive member 14 and changing the dimension of the super-magnetostrictive member 14 in a diametrical direction. By moving a portion of the super-magnetostrictive member 14 to be changed in the diametrical direction from one side 14B of the super-magnetostrictive member 14 to the other side 14A of the super-magnetostrictive member 14, fluid is fed out from one side of the inner side space 12A to the other side, via a clearance in the diametrical direction formed along with the change in the diametrical direction.
OTA MASANORI
Satoshi Takaya
Tsuyoshi Makino