PUMP DEVICE

PROBLEM TO BE SOLVED: To provide a pump device capable of supporting a rotary body without reducing the volume of a fluid chamber. SOLUTION: This pump device 1 comprises the rotary body 10 having an impeller 12 integrally connected to a rotor 11 around which permanent magnets 11a are fixed, rotatably stored in the fluid chamber 80, and sucking and discharging a fluid, a drive part 20 disposed on the outer periphery of a partition wall part 30 demarcating the fluid chamber 80 and generating a rotating magnetic field rotatingly driving the rotor 11, a case 50 demarcating the partition wall part 30 and the fluid chamber 80, and a shaft 60 fixed, at both ends, to the partition wall part 30 and the case 50 and rotatably supporting the rotary body 10. A restriction means L restricting the movement of the rotary body 10 in the axial direction of the shaft 60 is fitted to the shaft 60. COPYRIGHT: (C)2006,JPO&NCIPI