Patent OA-11375-A (OA)
Title: Permanent magnet generator.
Inventor: FUKADA MITSUHIRO
IPC: H02K7/18
Filed: 2000-04-28
Abstract: 1. A permanent magnetic generator comprising: a base 21 having fixedly a first magnetic body 23; a stator member 35 horizontally disposed above the base 21 through support members 27 and has a stator support 36; a drive-motor support 50 horizontally disposed and fixed to the support members 27 such that a space 61 is formed above the stator member 35; a rotoary shaft 55 penetrtes a first center hole 42 formed in the stator support 36 and a second center hole 51 formed in the drive- motor support 50 and is supported by means of bearing 43 and 52; a rotor 60 fixed to the rotary shaft 55 to be located within the space 61 and has annular permanent magnets 65 that face stator windings 38 of the stator member 35; a second magnetic body 56 fixedly attached to the projected lower end 55a of the rotary shaft 55 such that the second magnetic body 56 floats due to a repulsive force generated between the first and second magnetic bodies 23 and 56; a bearing member 80 attached to the drive-motor support 50 in order to support the rotary shaft 55 urged upward through the second magnetic body 56; and a drive motor 70 which is fixed to the drive-motor support 50 and is adapted to rotate the rotary shaft 55 through power transmission means 74 and 75. 2. A permanent magnetic generator according to Claim 1, wherein the first magnetic body 23 located adjacent to the base 21 further comprises a stationary yoke 24 formed of iron and having a concave cross section fitted to an upper surface 21a of the base 21; and a flat permanent maget 25 fixed to an inner wall surface of the stationary yoke 24, and the second magnetic body 56 further comprises: a floating yoke 57 formed of iron and having a concave cross section, in the same manner as the shape of said first magnetic body 23; and a flat floating magnet 58 fixed to an inner wall surface of the floating yoke 57. 3. A permanent magnetic generator according to Claim 1, wherein the stator member 35 further comprises: a stator support 36 which is supported fixedly by means of support members 27; a plurality of conductor attachment blocks 37 disposed on an upper surface of the stator support 36 in a circumferential direction such that a predetermined space is formed; and a plurality of stator windings 38 fixedly provided respectively in the conductor attachment blocks 37. 4. A permanent magnetic generator according to Claim 1, wherein the stator member 35 further comprises: a nonmagnet stator support 36 which is supported fixedly by means of support members 27; a plurality of nonmagnet conductor attachment blocks 37 disposed on an upper surface of the stator support 36 in a circumferential direction such that a predetermined space is formed; and a plurality of elongated tubular-shaped stator windings 38 inserted fixedly respectively into the conductor attachment blocks 37. 5. A permanent magnetic generator according to Claim 1, wherein the rotor 60 further comprises: a rotary plate 62 horizontally disposed and fixed to the rotary shaft 55; annular steel plates 64 integrally fixed to a lower surface of the rotary plate 62 such that they are opposed to conductor attachment blocks 37 of the stator member 35; and annular permanent magnets 65 integrally fixed to the lower surface of the rotary plate 62 such that the annular steel plates 64 and the annular permanent magnets 65 are alternately arranged and are opposed to stator windings 38 of the conductor attachment blocks 37 in a non-contacting state. 6. A permanent magnetic generator comprising: a first magnetic body 23 fixedly provided on a base 21, a stator member 35 horizontally disposed above the base 21 through support members 27 and has a stator support 36; a drive-motor support 50B horizontally disposed and fixed to the support members 27 such that a space 61 is formed above the stator member 35; a rotarty shaft 55B penetrtes a first center hole 42 formed in the stator support 36 and a second center hole 51 formed in the drive-motor support 50 and is supported by means of bearings 43 and 52; a rotor 60 fixed to the rotary shafts 55B to be located within the space 61 and has annular permanent magnets 65 that face stator windings 38 of the stator member 35; a second magnetic body 56B fixedly attached to the projected lower end 55a of the rotary shaft 55B such that the second magnetic body 56B floats due to a repulsive force generated between the first and second magnetic bodies 23 and 56, and a drive motor 70B vertically disposed on the upper surface of the drive-motor support 50B at the center portion thereof through a drive-motor support blocks 71B, having a drive shaft 72B of the drive motor 70B which is coaxial with and connected to the projected tip end of the rotary shaft 55B, which is urged upward through the second magnetic body. 7. A permanent magnetic generator according to Claim 6, wherein the rotary shaft 55B includes a projected upper end portion in the shape of a square that is inserting into an insertion hole 91 in the shape of a square of a coupling 90 which is provided fixedly to the drive shaft 72B of the drive motor 70B. 8. A permanent magnetic generator according to Claim 6, wherein the rotor 60 has an annular steel plate 64.