OA11375A - Permanent magnet generator. - Google Patents

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.

Description

011375

PERMANENT MAGNET GENERATOR

TECHNICAL FIELD 5 The présent invention relates generally to a permanent magnetic generator which can generate electricity by the use of a drive motor. The permanent magnetic generatorcan be prevented to happen to a cogging phenomenon (the revolving with a tremblingcaused by an attracted phenomenon of the magnetic force when a motor is started), thecostfor manufacturing and its weight can be reduced. Also the présent invention is suitable10 for mounting to real property or movable property such as a building, a mountain hut, aship, an automobile, or the like.

BACKGROUNDART 15 An exemplary conventional permanent magnetic generator is disclosed in Japanese

Patent application Laid-Open (kokai) No. 7-184360, in which a generator comprises anannular magnets (rotor) disposed North and South pôles mutually to the direction ofrotation, a stator (generative coil housing) hâve annular coils therein with projections (yokeprojection) formed of the Silicon Steel plate as many pôles, five pièces for example as the 20 rotor into the annular magnet, and slits which are formed on the projections to the samedirection of projection as respectively to decrease the electromotive force on the projection.

Although the permanent magnetic generator of the above-mentioned. structureallows electromotive force decrease or cogging phenomenon control, there are problemsas follows: 25 1. A weight of the permanent magnetic generator is heavy because the stator, made of

Silicon Steel plate, is one of the its éléments. 2. It is impossible to increase the amount of the génération of electricity because theannular magnets (rotor) do not hâve (super) strong magnetic flux density itself. 3. The rotation of the rotor is done inefficiently. 30 4. The permanent magnetic generator can not be improved to deminish the manufacturing -1 - 011375 cosi and to reduce ns size.

Then, the inventor suggested an exemplary conventional permanent magneticgenerator as illustrated in Figs. 12 to 14 to improve the above- mentioned problems fitdoes not remain non laid-opens when this application is filed). 5 The above-mentioned permanent magnetic generator comprises a support member 4 further which is composed of a pair of stationary columns 4a, 4a fixedly provided at thebase 1 and a support arm 4b disposed horizontally and fixed to the upper ends of thecolumns 4a, 4a; a drive motor 5 which is supported fixedly at the support arm 4b of thesupport member 4 such that the drive motor 5 is centrally located with respect to the axis of10 the permanent magnetic rotor 10; a rotary shaft having an elongated bar-like shape, theupper end 6a of the rotary shaft 6 coaxially connected to the output shaft 5a of the drivemotor 5 via a coupling 7, while the lower end 6b of the rotary shaft 6 entering an inverted-conical dépréssion 3 to be supported by the bearing at the base 1 ; a permanent magneticrotor 10 fixed to the rotary shaft, having a plurality of permanent magnets 12a, 12b, or the15 like; and a stator 15 having a cylindrical shape and which is disposed on the base 1 suchthat a predetermined gap 16 is formed between the stator 15 and the rotor 10.

The permanent magnetic rotor 10 is composed of a synthetic resin mold 11 and aplurality of permanent magnets 12a, 12b, 12c, and 12d. The synthetic resin mold 11 isfixedly disposed on the central portion of the rotary shaft 6, and each end surface thereof20 has a wheel-like shape. The permanent magnets 12a, 12b, 12c, and 12d are circumferen-tially arranged within an outer tubular portion 11a of the synthetic resin mold 11. Thesynthetic mold 11 is further composed of an outer tubular portion 11a, an inner tubularfixing portion 11b through which the rotary shaft 6 pénétrâtes, and the connection portions11 c radially connect the inner tubular fixing portion 11 b and the outer tubular portion 11 a. 25 Conceming with the above-mentioned structure, when the drive motor is started through use of a power supply, the rotary shaft 6 rotâtes together with the output shaft 5a.The rotary shaft 6 smoothly rotâtes while being supported by the dépréssion 3 of thebearing 2 in a point contact manner, since the synthetic resin mold 11 of the rotor 10 rotâtestogether with the rotary shaft 6. As a resuit, magnetic field of the permanent magnetic rotor30 10 crosses the stator windings 19 of the stator 15, so that an induction voltage is generated. -2- 011375

Thus electricity can be taken oui from the stator windings 19. Therefore, the permanentmagnetic generator can effieiently generate electricity in amount.

The permanent magnetic generator of the présent invention is a reformed generatorto the above-mentioned invention to effieiently generate electricity in a still more amount. 5

DISCLOSURE OF THE INVENTION

The présent invention (the invention described in Claim 1) provides a permanentmagnetic generator which comprises a base 21, a stator member 35, a drive-motor10 support 50, a rotoary shaft 55, a rotor 60, a second magnetic body 56, a bearing member80, and a drive motor 70. The stator member 35 is horizontally disposed above the base21 through support members 27 and has a stator support 36. The drive- motor support 50is horizontally disposed and fixed to the support members 27 such that a space 61 isformed above the stator member 35. The rotary shaft 55 penetrtes a fïrst center hole 4215 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. The rotor 60 is fixed tothe rotary shaft 55 to be located within the space 61 and has annular permanent magnets65 that face stator windings 38 of the stator member 35. The second magnetic body 56 isfixedly attached to the projected lower end 55a of the rotary shaft 55 such that the second20 magnetic body 56 floats due to a répulsive force generated between the first and secondmagnetic bodies 23 and 56. The bearing member 80 is attached to thé drive-motor support50 in order to support the rotary shaft 55 urged upward through the second magnetic body 56. The drive motor 70 is fixed to the drive-motor support 50 and is adapted to rotate therotary shaft 55 through power transmission means 74 and 75. Therefore, the rotary shaft25 can be improved to the performance for its rotation.

The présent invention (the invention described in Claim 5) provides a permanentmagnetic generator including a rotor 60 which further comprises: a rotary plate 62, annularSteel plates 64, and annular permanent magnets 65. The rotary plate 62 is horizontallydisposed and fixed to the rotary shaft 55. The annular Steel plates 64 are integrally fixed to30 the lower surface of the rotary plate 62 such that they are opposed to conductor -3- 011375 attachment blocks 37 of the stator member 35. The annular permanent magnets 65 areintegrally fixed to the lower surface of the rotary plate 62 such that the annular Steel plates64 and the annular permanent magnets 65 are altemately arranged and are opposed tostator windings 38 of the conductor attachment blocks 37 in a non-contacting State. 5 Therefore, a strong magnetic field can be generated within the space 61, and the rotaryshaft can be improved to the performance for its rotation.

The présent invention (the invention described in Claim 6) provides a permanentmagnetic generator which comprises a first magnetic body 23 fixedly provided on a base21, a stator member 35, a drive-motor support 50B, a rotarty shaft 55B, a rotor 60, aio second magnetic body 56B, and a drive motor 70B. The stator member 35 is horizontallydisposed above the base21 through support members 27 and has a stator support 36.The drive-motor support 50 is horizontally disposed and fixed to the support members 27such that a space 61 is formed above the stator member 35. The rotary shaft 55Bpenetrtes a first center hole 42 formed in the stator support 36 and a second center hole 5115 formed in the drive-motor support 50 and is supported by means of bearing 43 and 52. Therotor 60 is fixed to the rotary shaft 55B to be located within the space 61 and has annularpermanent magnets 65 that face stator windings 38 of the stator member 35. The secondmagnetic body 56B is fixedly attached to the projected lower end 55a of the rotary shaft55B such that the second magnetic body 56B floats due to a répulsive force generated20 between the first and second magnetic bodies 23 and 56. The drive motor 70B is verticallydisposed on the upper surface of the drive-motor support 50B at the center portion thereofthrough a drive-motor support blocks 71 B. The drive shaft 72B of the drive motor 70B iscoaxial with and connected to the projected tip end of the rotary shaft 55B, which is urgedupward through the second magnetic body. Therefore, the same effect as that of the25 invention described in Claim 1 can be achieved.

BRIEF DESCRIPTION OFTHE DRAWING

Figs. 1 to 8 illustrate in each explanation view showing a first embodiment of the30 présent invention. Fig. 9 and Fg. 10 illustrate in each schematic explanation view showing -4- 011375 a variation of main part of the first embodiment of the présent invention. Fig. 11 illustartes ina schematic cross-sectionaJ explanation view showing a second embodi-ment of theprésent invention. Figs. 12 to 14 illustrate in each schematic explanation view showing anexample of a prior art which is proposed by the présent invention. 5 Fig. 1 is a perspective explanatory view showing a first embodiment of the présentinvention;

Fig. 2 is an explanation viewfrom the top-view direction in Fig. 1 ;

Fig. 3 is an explanation view from the front-view direction in Fig. 1 ;

Fig. 4 is an expanded schematic explanation view taken vertically on line 4-4 in Fig. 2; 10 Fig. 5 is a mainly expanded explanation view in Fig. 4;

Fig. 6 is a reduced schematic explanation view indicating from the line 6-6 in Fig. 3;

Fig. 7 is an exploded perspective view;

Fig. 8 is a mainly schematic explanation view;

Fig. 9 is an schematic explanation view showing a variation of main part in Fig. 8; 15 Fig. 10 is an schematic explanation view showing a variation of main part in Fig. 4;

Fig. 11 is a schematic cross-sectional explanation view showing a second embodiment;and

Figs. 12 to 14 illustrate in each schematic explanation view showing an example of a priorart which is proposed by the présent invention. 20

BEST MODE FOR CARRYING OUTTHE INVENTION

Preferred embodiment of the présent invention are described in more detail belowreferring to the accompanying drawings. Figs. 1 to 9 illustrate a first embodiment of a25 permanent magnetic generator X. Numéral 21 dénotés a circulàr base. A circulerdépréssion 22 is formed over a large area on the upper surface 21a of the base 21.Numéral 23 dénotés a first magnetic body fixedly provided in the dépréssion 22. The firstmagnetic body 23 is composed of a stationary yoke 24 formed of iron and having aconcave cross section fitted to the dépréssion 22, and a fiat magnet 25 fixed to the center30 portion of the bottom surface of the stationary yoke 24. -5- 011375

The upper surface 21a of the base 21, the upper surface 24a of the circumferentialedge portion of the stationary yoke 24, and· the upper surface 25a of the magnet 25 arelocated on a circumferentially common plane.

In this embodiment, the magnet 25 has a south pôle on the side of the upper surface5 25a and a north pôle on the side of the lower surface 25b. Accordingly, due to the effect of the polarity (north pôle) of the maagnet 25, a north pôle is formed in the vicinity of the uppersurface 24a of the circumferential edge portion of the stationary yoke 24 having a functionfor generating magnetism.

Numéral 27 dénotés each of a plurality of support members which are vertically10 disposed on the base 21. In the présent embodiment, six support members 27 are povidedalong the circumferential edge of the base 21 at predetermined intervals.

The structure of one of the support members 27 will now be described. Numéral 28dénotés a support shaft having an extemal thread at either end. The support shaft 28 isfixedly screwed into a tapped hole formed at the circumferential edge of the base 21.15 Numéral 29 dénotés a lower support pipe which is fitted onto a lower portion of the supportshaft 28. Numéral 30 dénotés an upper support pipe which is fitted onto an upper portion ofthe support shaft 28 such that the stator member 35 is interposed between the lower andupper support pipes 29 and 30. Numéral 31 dénotés a lock nut which is, in screwengagement with the projected upper end of the support shaft 28 in order to fix the drive-20 motor support to the upper support pipe 30.

The upper support pipe 30 has a length approximately double that of the lowersupport pipe 29, and the support shaft 28 pénétrâtes the support pipes 29 and 30.

Next, a stator member 35 is descibed. The stator member 35 is mainly composed ofa circular, nonmagnetic stator support 36, a plurality of (lots of) nonmagnetic conductor25 attachaient blocks 37, and a plurality of stator windings 38. The stator support 36 is fixedly supported by means of the support members 27. The conductor attachaient blocks 37 areradially and circumferentially disposed on the upper surface of the stator support 36 suchthat a predetermined space is formed between adjacent attachaient blocks 37. The statorwindings 38 (one generating coil on the whole) are fixedly provided in the conductor30 attachaient blocks 37. In relation to the object of the présent invention of cogging -6- 011375 phenomenon , the terni “diamagnetic materiaf used herein means feeble magneticsubstance (substain contains little magnetic substance) and material which is lighter thaniron, regardless of whether the substance is nonferrous métal (such as titanium, stainless,or the like ) or a nonmetal (such as synthetic resin, ceramics, cloth,or paper). 5 The nonmagnetic stator support 36 in this embodiment is composed of a lower support 40 formed of wood and horizontally disposed to face the upper surface 21a of thebase 21, and an upper support 41 formed of synthetic resin and integrally fixed to theupper surface of the lower support 40. The supports 40 and 41 are supported by mean ofthe support shafts 28 to be located on the upper ends of the lower support pipes 29 of the10 support members 27. A through-hole serving as a first center hole 42 is formed in the stator support 36. A first bail bearing 43 is provided within the first center hole 42 at a steppedportion thereof. Further, a large number of engagement grooves 44 for receiving theconductor attachment blocks are formed radially and circumferentially on the upper surfaceof the upper support 41 at predetermined intervals. 15 Each of the nonmagnetic conductor attachment blocks 37 in this embodiment generally has a shape of a vertically elongated block having trapézoïdal or fan-shapedupper and lower end surfaces. Wrth reference to Fig. 8, the structure of one of theconductor attachment blocks 37 will be described. Numéral 45 dénotés a verticalelongated hole that pénétrâtes the conductor attachment blocks 37 in a redial direction 20 (from front surface 37a to back surface 37b) with respect to a rotary shaft 55, which will bedescribed later. The vertical elongated hole 45 is formed at an approximate center portionof the conductor attachment blocks 37. Numéral 46 dénotés a through-hole which isformed from the trapézoïdal upper surface 37c toward the vertical elongated hole 45. Thethrough-hole 46 perpendicularly intersects the vertical elongated hole 45 to communiccte 25 therewith. Numéral 47 dénotés an engagement portion which is projected from thetrapézoïdal lower surface 37d of the conductor attachment blocks 37 and is engaged withthe engagement grooves 44 of the upper support 41.

Each of the stator windings 38 is shaped in a form of an elongated tubular body(bobbinless coil) having a track-shaped opposite ends. In the présent embodiments, the30 stator windings 38 is inserted into the above-mentioned vertical elongated hole 45, and -7- 011375 fixed by means of a fixing pin 48 inserted into the through-hole 46. mAccordingly, the stator•winding 38 has a cavity portion 49 which pénétrâtes the stator winding 38. Furthermore,the conductor attachaient blocks 37 is made of synthetic resin to reduce its weight

Numéral 50 dénotés a drive-motor support that is horizontally disposed and fixed to5 the upper ends of the support members 27. The drive-motor support 50 is supported bymean of the support shafts 28 to be located on the upper ends of the upper support pipes30 of the support members 27 and is fixed by means of lock nuts 31 that are in screwengagement with the support shafts 28. As in the stator support 36, a through-hole servingas a second center hole 51 is formed in the drive-motor support 50. A second bail bearing10 52 is provided within the second center hole 51 at a stepped portion thereof. The drive- motor support 50 is also made of wood or synthetic resin to reduced its weight

Numéral 55 dénotés a rotary shaft joumaled by means of the first bail bearing 43 ofthe stator support 36 and the second bail bearing 52 of the drive-motor support 50. A lowerend portion 55a of the rotary shaft 55 pénétrâtes the first center hole 42 of the stator15 support 36 and projects to the vicinity of the magnet 25 of the first magnetic bodt 23.Meanwhile, an upper end portion of the rotary shaft 55 pénétrâtes the second center hole51 of the drive-motor support 50. The projected tip endportion of the rotary shaft 55 issharpened into a conical shape.

At the projected lower end portion 55a of the rotary shaft 55 is fixedly attached a20 second magnetic body 56 which floats due to répulsive force generated between the firstand second magnetic bodies 23 and 56. Similariy to the case of the first magnetic body 23,the second magnetic body 56 is composed of a floating yoke 57 formed of iron and havingan inverted concave cross section, and a fiat floating magnet 58 fixed to the center portionof the inner wall of the floating yoke 57. The bottom surface 57a of the circumferential edge25 portion of the floating yoke 57 and the lower surface 58a of the floating magnet 58 arelocated on a substantially common plane. In the présent embodiment, the floating magnet58 has a south pôle on the side of the lower surface 58a and a north pôle on the side of theupper surface 58b. Accordingly, due to the effect of the polarity (north pôle) of the floatingmagnet 58, a north pôle is formed in the vicinity of the lower surface 57a of the30 circumferential edge portion of the floating yoke 57. Therefore, the rotary shaft 55 is always -8- 011375 urged upward through the second magnetic bodv 56, which repuises against the firstmagnetic body 23.

Numéral 60 dénotés a rotor formed of iron. The rotor 60 is fixed to the rotary shaft 55to be located within a space provided between the stator support 36 of the stator member5 35 and the drive-motor support 50.

The stator 60 in the présent embodiment is composed of a horizontal rotary plate 62,a sleeve 63, a plurality of (four plates in ail) annular Steel plates 64, and annular permanentmagnets 65. The rotary plate 62 is fixed to the rotary shaft 55 at a portion near the upperend of the rotary shaft 55. The sleeve 63 is fixedly attached on the lower surface of thè10 rotary plate 62 at the center thereof and frtted onto the rotary shaft 55. The annular Steelplates 64 are integrally attached to the lower surface of the rotary plate 62 such that theSteel plate 64 are nested (concentric circle) around the sleeve 63 and that a predeterminedspace is formed between adjacent two Steel plates 64 in order to receive two conductorattachment blocks 37 therebetween. The permanent magnets 65 are integrally attached to15 the lower surface of the rotary plate 62 such that the annular Steel plates 64 and theannular permanent magnets 65 altemately face the stator windings 38 of the conductorattachment blocks 37 in a non-contacting State.

That is, as illustrated in Figs. 6 and 7, in space formed between the conductorattachment blocks 37, which are radially disposed on the stator support 36 and20 accommodate the stator windings 38 in the vertical elongated hole 45, the plurality ofannular permanent magnets 65 and the plurality of annular plates 64 are altemately entersuch that the annular permanent magnet 65 first enters the first space, the annular Steelplates 64 then enter the second space, the annular permanent magnet 65 then enters thethird space, the annular Steel plates 64 then enter the fourth space, etc. Therefore, at least25 one conductor attachment blocks 37 is sandwiched between the annular permanentmagnet 65 and the annular Steel plate 64 in a non-contacting State.

The sleeve 63 has a large thickness or diameter in order to increase the mass of therotor 60 to thereby obtain a so-called flywheel effect, as well as to prevent vibration anddeflection of the rotor 60. Each of the annular permanent magnets 65 concentrically30 disposed on the lower surface of the rotary plate 62 is composed of a plurality of curved -9- 011375 permanent magnet plates (not indicated by référencé numerals) that are combined suchthat north and south pôles are altemately formed in the circumferential direction (such thatthe north and south pôles are altemately formed on both the inner surface side and theouter surface side of the permanent magnet plates). In the présent embodiment, the5 annular permanent magnets 65 are fixedly fitted into the fitting Windows of annularattachment walls 66 formed of iron and concentrically and integrally attached to the lowersurface of the rotary plate 62.

Numéral 70 dénotés a drive motor fixedly disposed above the drive-motor support 50through a drive-motor support bracket 71. This drive motor is started through use of a10 power supply, not illustrate, such as a battery, a condenser, a home power supply, or thelike. In the présent embodiment, the drive motor 70 is not coaxial wïth the rotary shaft 55,but is disposed in the vicinity of the rotary shaft 55 such that the drive shaft 72 of the drivemotor 70 is directed downward.. A lower end portion of the drive shaft 72 is joumaled by means of a third bail bearing15 73 provided on the upper surface of the drive-motor support 50. Further, a drive gear 74 is fixedly provided on the drive shaft 72 at a portion near the lower end thereof. The drivegear 74 is in meshing engagement with a driven gear 75 fixed to the projected upper endof the rotary shaft 55.

Numéral 80 dénotés a bearing member attached to the central portion of the upper20 surface of the drive-motor support 50 in order to support the projected tip end of the rotaryshaft 55. The bearing member 80 is composed of a bearing block 81 having an angle-likeshape or a frame-like shape and a fourth bail bearing 82 which is provided on the inner wallsurface of the upper horizontal wall of the bearing block 81 and supports the shaped tipend of the rotary shaft 55. 25 In the above-mentioned structure, When the drive motor 70 is started through use of a power supply of a condenser, for example, a power accumulation apparatus, drive forceof the drive gear 74 of the drive shaft 72 is transmitted to the driven shaft 75, so that therotary shaft 55 rotâtes. At this time, since the second magnetic body 56 repuises againstthe first magnetic body 23 due to a répulsive force produced therebetween, the rotary shaft 30 55 rotâtes in a floated State while being supported by the first bail bearing 43, the second -10- 011375 bail bearing 52, and the fourth bail bearing 82. Therefore, the weight of the rotor 60 doesnot act on the bail bearings 43,52, and 82. The first and second bail bearings 43 and 52bear only a tangential friction force in the circumferential direction of the rotary shaft 55.Further, the fourth bearing 82 bears only a friction force generated due to upward abutting5 motion of the sharpened tip end of the rotary shaft 50. Therefore, as compared withordinary machines and devices, the rotary shaft 50 rotâtes smoothly in a State in which thefriction résistance with the bearing member is decreased.

When the rotary shaft 55 rotâtes, magnetic field of each annular Steel plate 64of therotor 60 and each annular permanent magnet 65 crosses the stator windings 38 of each10 conductor attachaient block 37 of the stator member 35, so that an induction voltage isgenerated, and thus electricity can be taken out from the stator winding 38. In the resuit ofthe experiment, the permanent magnetic generator X succeeded in generating efficientlyelectricity in amount.

By the way, in frie permanent magnetic generator X of frie first embodiment, the15 stator support 36 of the stator member 35 is composed of a lower support 40 fomned ofwood and the upper support 41 formed of synthetic resin, however, the lower and uppersupports 40 and 41 may be formed integrally through use of a synthetic resin material or aceramic material.

In addition, the stator support 36 of the stator member 35 and the conductor20 attachment blocks 37 may be formed integrally through use of a synthetic resin material ora ceramic material. Also the tip end portion of the rotary shaft 60 is sharply pointed as in thecase of a nail, however, the bearing 82 supports to the tip end thereof may be formed in aninverted-conical dépréssion 3.

Further, as illustrated in Fig. 9, the plurality of conductor attachment blocks 3725 disposed on the upper surface of the stator support 36 of the stator member 35 atpredetermined intervals in the circumferential direction may be integrally connectedthrough an annular fixing plate 85. In this case,, the annular fixing plate 85 is fixed to theupper surfaces 37c of the conductor attachment blocks 37 disposed in the circumferentialdirection by means of fixing pins 48A inserted into attachment through-holes 86 formed at30 predetermined intervals. - Il - 011375

Furthermore, as illustrated in Fig. 10, at least one of the annular Steel plates 64 of therotor 60A may be formed to hâve a wall thickness greater than that of other annular Steelplates 64 to produce an effect of flywheel therein. In frie embodiment of Fig. 10, anoutermost annular Steel plate 64A has a slightly larger wall thickness to obtain a sufficient5 inertia moment and flywheel effect.

Therefore, the rotor 60A gets a large inertia force so that the résistance by counterelectromotive force, when electricity is generated, is controlled by inertial moment andflywheel effect due to the rotor 60A even if the drive motor 70 stops.

Additionaly, the permanent magnet 65 of the rotor 60 (60A) is a neodymium magnet,10 for example having BHmax of 41.1 MGO.

OTHER EMBODIMENT

Other embodiments of the preset invention will now be described. Throughout the15 drawings of the embodiments, like components are denoted by like numerals as of the firstembodiment and will not therefore be explained in greater detail. In addition, in eachembodiment.

Fig. 11 illustartes a second embodiment of the présent invention; this is disiinguishedfrom the first embodiment in that à drive motor 70B is vertically disposed on the upper20 surface of the drive-motor support 50B at the center portion thereof through a drive-motor support blocks 71 B, having a drive shaft 72B of the drive motor 70B which is coaxial withand connected to the projected tip end of the rotary shaft 55B, which is urged upwardthrough the second magnetic body.

Then, the coupling 90 having a fitting hole 91 formed in the shape of a square to a25 downward direction is attached fixedly to a projected end portion of the drive shaft 72B ofthe drive motor 70B. Therefore, the projected upper end portion, formed in a square shape,of the rotary shaft 55B which lises due to the repelling power with the second magneticbody 56B is always inserting into the fitting hole 91 of the coupling 90. -12- 011375

INDUSTRIAL APPUCABIUTY

In the above-mentioned permanent magnetic generator of the présent invention, thesecond magnetic body integrally provided to the rotary shaft lise up corresponding to the5 nature of pôles of the first magnetic body adjasent the base so that the frictional résistanceof rotary shaft to the bearing reduces it to a minimum.

Also, because the rotor of the permanent magnetic generator has a large diameterand enough mass (weight), and it gets a large inertia moment,the résistance by a counterelectromotive force is controlled by inertial moment and flywheel effect due to the10 permanent magnetic rotor, then, the permanent magnetic generator rotâtes and continuesto generate even if there is no power source for driving for a limited time.

Moreover, there are some effectives, for example, it is possible to manufacture of lowcost relatively, it does not cost much money for a running cost, the size of the permanentmagnetic generator can be reduced.orthe like. 15 Addto'onaly, in such embodiment that the rotor hâve the anuular Steel plate faces to the fixed winding of stator member, magnetic field produces into the space in more strong.Therefore, it can be improve to generate electricity in amount Furthermore, in suchembodiment that elongated fixed winding (bobbinless coil) is attached to the .conductorfitting piece of the stator member, its weight can be reduced. In addition, in such 20 embodiment that the stator member without the fixed winding is formed of nonmagneticmaterial a cogging phenomenon is slight.

Therefore, the présent invetion is suitable for mounting to real property or movableproperty such as a building, a mountain hut, a ship, an automobile, or the like.

25 DESCRIPTION OF THE SYMBOLS X, X1 ... Permanent Magnetic Generator; 21 ... Base; 23... First Magnetic Body; 30 27... Support Member; -13- 011375 35.. . Stator Member; 36.. . Stator Support; 37.. . Conductor Attachaient Block; 38.. . Stator Winding; 5 42... First Center Hole; 50.. . Drive-Motor Support; 51 ... Second Center Hole; 55,55B... Rotary Shaft; 56,56B... Second Magentic Body10 60,60A... Rotor; 61.. . Space; 64,64A... Annular Steel Plate; 65 ;.. Annular Permanent Magnet, 70,70B... Drive Motor; 15 71,71B... Drive-Motor Support Block; 72,72B... Drive Shaft; and 80.. . Bearing Member. -14-

Claims (8)

011375 What is claimed is:

1. A permanent magnetic generator comprising:a base 21 having fixedly a first magnetic body 23; 5 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 27such 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 10 a second center hole 51 formed in the drive- motor support 50 and is supported by meansof bearing 43 and 52; a rotor 60 fixed to the rotary shaft 55 to be located within the space 61 and hasannular 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 15 rotary shaft 55 such that the second magnetic body 56 floats due to a répulsive forcegenerated 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 therotary 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 20 the rotary shaft 55 through power transmission means 74 and 75.

2. A permanent magnetic generator according to Claim 1, wherein the first magneticbody 23 located adjacent to the base 21 further comprises a stationary yoke 24 formed ofiron and having a concave cross section fitted to an upper surface 21 a of the base 21 ; anda fiat permanent maget 25 fixed to an inner wall surface of the stationary yoke 24, and the 25 second magnetic body 56 further comprises: a floating yoke 57 formed of iron and havinga concave cross section, in the same manner as the shape of said first magnetic body 23;and a fiat 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 member35 further comprises: a stator support 36 which is supported fixedly by means of support 30 members 27; a plurality of conductor attachment blocks 37 disposed on an upper surface -15- 011375 of the stator support 36 in a circumferential direction such thaï a predetermined space isformed; and a plurality of stator windings-38 fixedly provided respectively in the conductorattachment blocks 37.

4. A permanent magnetic generator according to Claim 1, wherein the stator member5 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 37disposed on an upper surface of the stator support 36 in a circumferential direction suchthat a predetermined space is formed; and a plurality of elongated tubular-shaped statorwindings 38 inserted fixedly respectively into the conductor attachment blocks 37. 10

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 thatthey are opposed to conductor attachment blocks 37 of the stator member 35; and annularpermanent magnets 65 integrally fixed to the lower surface of the rotary plate 62 such that15 the annular Steel plates 64 and the annular permanent magnets 65 are altematelyarranged and are opposed to stator windings 38 of the conductor attachment blocks 37 ina non- contacting State.

6. A permanent magnetic generator comprising:a first magnetic body 23 fixedly provided on a base 21, 20 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 members27 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 and25 a second center hole 51 formed in the drive-motor support 50 and is supported by meansof bearings 43 and 52; a rotor 60 fixed to the rotary shaft 55B to be located within the space 61 and hasannular 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 the30 rotary shaft 55B such that the second magnetic body 56B floats due to a répulsive force -16- 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 71 B, having a driveshaft 72B of the drive motor 70B which is coaxial with and connected to the projected tip5 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 shaft55B includes a projected upper end portion in the shape of a square that is inserting into aninsertion hole 91 in the shape of a square of a coupling 90 which is provided fixedly to thedrive shaft 72B of the drive motor 70B. 10

8. A permanent magnetic generator according to Claim 6, wherein the rotor 60 has an annular Steel plate 64. -17-