JP2005102413A - Generator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce the size and thickness of a generator that comprises magnets and armature coils and generates electromotive force in the armature coils by rotating the magnets by predetermined external force, and further increase the generated electromotive force and enhance the efficiency of generation. <P>SOLUTION: The generator 11 comprises the magnets 23A to 23D and the armature coils 31A to 31C and 32A to 32C with, for example, the magnet portion taken as a rotor 12. The armature coil portion as a stator 13 comprises an internal coil group and an external coil group. In the internal coil group, a predetermined number of hollow internal coil bodies 31A to 31C are disposed in parallel on the circumferential surface of a magnet yoke 22 and the magnets 23A to 23D as a virtual disk. In the external coil group, a predetermined number of hollow external coil bodies 32A to 32C are disposed in parallel so that the internal coil group is covered therewith. The generator is so constructed that the circumferential surface of the internal coil group and the circumferential surface of the external coil group are identical with each other in circumference. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a power generation device that includes a magnet and an armature coil, and generates an electromotive force in the armature coil when the magnet is rotated by a predetermined external force.

  Generally, a generator can be realized by making the basic configuration the same as that of an electric motor. Various generators are known, ranging from small to medium-sized to large-sized generators, depending on their use and load power. It is a typical issue.

  Then, what is described in the following patent documents is known as an example of a generator. In the following patent document, a non-commutator DC motor and a generator are shown, and five winding groups 11 to 15 are wound around a stator 10 facing the rotor 20 as a main configuration of the motor. A power switch unit 65 that selectively applies an exciting current to the lines 11 to 15 is provided. And in the said structure, when using as a generator, it is going to generate an electric current at the timing as shown in FIG. 15 by providing the rotator 20 with the motive power from the outside.

Japanese Patent Laid-Open No. 11-234997

  The generators described in the above-mentioned patent documents and other known generators have to make the windings thicker or increase the number of turns in order to increase the electromotive force. There is a problem that the generation efficiency of electromotive force cannot be improved with respect to the size.

  Accordingly, the present invention has been made in view of the above problems, and an object of the present invention is to provide a power generator that increases electromotive force generation and improves efficiency while reducing the size and thickness of the device.

  In order to solve the above-described problem, in the invention of claim 1, a core or a yoke including a magnet and an armature coil, and generating an electromotive force in the armature coil when the magnet is rotated by a predetermined external force. The armature coil includes a predetermined number of hollow internal coil bodies each having a predetermined shape in which a predetermined number of conductors are wound with respect to a peripheral surface of a virtual disk or a disk-shaped core. And a hollow external coil body having a predetermined shape in which a predetermined number of turns are wound on the peripheral side surface when the internal coil group is a virtual disk, covers the internal coil group. And a predetermined number of external coil groups arranged in parallel.

In the inventions of claims 2 to 7, it is configured that “the core or yoke that generates an electromotive force in the armature coil is slotless”,
“The peripheral side surface of the internal coil group and the peripheral side surface of the external coil group have the same outer periphery”,
“The internal coil bodies and the external coil bodies are each formed into a substantially hollow trapezoidal shape or a hollow arch shape, and the internal coil bodies are arranged at intervals of 120 degrees, and the external coil bodies are respectively connected to the internal coil bodies. It is a configuration in which the coil body is shifted by 60 degrees and arranged at intervals of 120 degrees.
"The internal coil body and the external coil body are connected in series or in parallel in mutually facing phases, and each is star-connected",
“A rectifier circuit that converts the electromotive force generated in the armature coil into a direct current” is configured,
“The rectifier circuit includes smoothing means”.

  According to the present invention, a power generation device that generates an electromotive force in an armature coil by rotating a magnet, and the armature coil is an internal coil that is hollow with respect to a peripheral surface of a virtual disk or a disk-shaped core. The apparatus is formed by an internal coil group in which a predetermined number of bodies are arranged in parallel and an external coil group in which a predetermined number of hollow external coil bodies are arranged in parallel so as to cover the internal coil group. Thus, the increase in electromotive force generation and the efficiency can be improved while reducing the thickness. In particular, by using a slotless type core or yoke that generates electromotive force in the armature coil, the rotational torque with respect to the magnet's attractive force can be minimized, and the armature coil can be rotated with a minute external force. It can be done.

  In addition, since the resistance of the entire armature coil can be selected depending on whether the coil bodies facing each of the internal coil bodies and the external coil bodies are connected in parallel or in series, an increase in the generated electromotive voltage, It is possible to selectively cope with an increase in load current, while improving the degree of freedom in selecting the wire thickness in forming the coil body according to the generated electromotive force.

  Hereinafter, the best embodiment of the present invention will be described with reference to the drawings. The power generator of the present invention can be applied to both the inner rotor type and the outer rotor type, and the configuration of the present invention can be applied to any type from small to large. is there.

  FIG. 1 shows a configuration diagram of the power generator according to the first embodiment of the present invention, and FIG. 2 shows a partial cross-sectional perspective view of the power generator shown in FIG. 1 and 2 show an inner rotor type power generator, FIG. 1 (A) is a plan view of the inside of the housing, FIG. 1 (B) is a cross-sectional view taken along the line A-A in FIG. (C) is a block diagram from the bottom surface excluding the lid. 1A to 1C and FIG. 2, the power generation apparatus 11 includes a stator 13 that includes a rotor 12 and is housed in a housing 14. The housing 14 has a cylindrical shape, one is open, and a cylindrical shaft support is formed at the other central portion.

  In the rotor 12, the shaft 21 is fixed to a bowl-shaped magnet yoke 22, and four (four poles) magnets 23 </ b> A to 23 </ b> D are fixed to the outer periphery of the magnet yoke 22 in a non-contact manner. The shaft 21 is rotatably attached to the shaft support portion of the housing 14 by bearings (for example, ball bearings) 15A and 15B. As the magnets 23A to 23D, anisotropic magnets such as neodymium / iron-based magnets and samarium / cobalt-based magnets are used. N poles and S poles are alternately arranged and magnetized to four poles. Yes.

  The stator 13 is formed of a saddle-shaped armature coil that is mainly used for generating an electromotive force. A predetermined number of windings of a coil as a conductor are wound around the peripheral side surface of the rotor 12 that is a virtual disk. An inner coil group in which the rotated substantially trapezoidal (or bow-shaped) hollow inner coil bodies 31A to 31C are arranged in parallel, and a peripheral side surface when the inner coil group is a virtual disk The hollow external coil bodies 32A to 32C each having a substantially trapezoidal shape (or a bow shape) obtained by winding a predetermined number of coils serving as conductors are configured by an external coil group arranged in parallel so as to cover the internal coil group. (Details will be described in FIG. 3).

  The stator 13 is arranged with a slotless type coil yoke (laminated yoke) 16 provided on the inner wall of the side of the housing 14 with a minute gap (may be abutted), and below the stator 13 (opening side of the housing 14). For example, a rectifier circuit board 17 is provided. The coil yoke 16 is for generating an electromotive force in the internal coil group and the external coil group. The rectifier circuit board 17 will be described in detail with reference to FIG. 4, but the generated electromotive force is converted into, for example, direct current and output from the lead wires 19A and 19B to the outside. And the cover part 20 is provided in the open part of the housing 14, and it is set as the substantially sealed state. The rectifier circuit 17 may be provided outside the power generation device 11. In this case, the substrate 17 simply has the lead wires (corresponding to a phase, b phase, c phase, and n phase described later). It may only be extended outside.

  Here, FIG. 3 is an explanatory view of the armature coil of the power generator shown in FIG. In FIG. 3A, first, each of the internal coil bodies 31A to 31C has a multilayer structure in which coils are reciprocally wound by aligned winding, and has a substantially hollow trapezoidal shape (may be an arc shape). . By arranging the shape to be substantially trapezoidal or arcuate, the arrangement position of the shaft support portion of the housing 14 can be secured. It should be noted that the external coil bodies 32A to 32C have the same shape only by changing the sizes.

  Therefore, as shown in FIG. 3A, each of the three internal coil bodies 31A to 31C is arranged in parallel at intervals of 120 degrees with respect to the peripheral side surface of the rotor 12 as a virtual disk. Thus, an internal coil group as shown in FIG. Further, the outer coil bodies 32A to 32C are shifted by 60 degrees from the inner coil bodies 31A to 31C with respect to the peripheral side surface when the inner coil group is a virtual disk, covering the inner coil group. The external coil group shown in FIG. 3C is arranged in parallel at intervals of 120 degrees. In this case, the peripheral side surface of the internal coil group and the peripheral side surface of the external coil group have the same outer periphery. The connection of the internal coil bodies 31A to 31C and the external coil bodies 32A to 32C will be described with reference to FIG.

  Here, the assembly of the power generation device 11 will be briefly described. First, the shaft 21 is press-fitted into the magnet yoke 22, and the magnets 23 </ b> A to 23 </ b> D magnetized as described above are bonded and fixed to the outer periphery of the magnet yoke 22. . On the other hand, the coil yoke 16 is inserted into the inner wall of the side portion of the housing 14 and fixed by adhesion, and the bearings 15A and 15B are attached to the shaft support portion.

  Subsequently, the rotor 12 composed of the magnets 23A to 23D (magnet yoke 22) is enclosed by a minute gap, and the internal coil bodies 31A to 31C are arranged and bonded and fixed at the abutting portions. The external coil bodies 32A to 32C are arranged as described above so as to cover the bodies 31A to 31C, and are bonded and fixed at the abutting portions and the abutting portions of the internal coil bodies 31A to 31C. Thereby, a coil assembly of the stator 13 including the rotor 12 is formed. A corresponding jig is used for assembling the inner coil bodies 31A to 31C and the outer coil bodies 32A to 32C.

  Further, the coil assembly is inserted into the housing 14 (the shaft 21 is press-fitted into the bearings 15A and 15B of the shaft support portion of the housing 14), the inner wall of the upper surface (opposite side of the opening) of the housing 14 and the external coil body 32A. Adhering and fixing the upper part of 32C. The rectifier circuit board 17 is attached, and the lid 20 is attached to the opening of the housing 14 by caulking or the like.

  FIG. 4 is an explanatory diagram of the armature coil and the rectifier circuit of the power generator shown in FIG. 4A and 4B show an example of a rectifier circuit for converting the generated electromotive force into a direct current as well as the connection state of the internal coil bodies 31A to 31C and the external coil bodies 32A to 32C. .

  4A, each of the internal coil bodies 31A to 31C of the internal coil group is star-connected, and each of the external coil bodies 32A to 32C of the external coil group is star-connected, and the phases facing each other (A phase to c phase and neutral point n) are connected in parallel. That is, internal coil body 31A and external coil body 32B (a phase), internal coil body 31B and external coil body 32C (b phase), internal coil body 31C and external coil body 32A (c phase), and neutral points of each other n is connected, and these a-phase, b-phase, c-phase and n-phase are connected to the rectifier circuit board 17.

  The rectifier circuit board 17 shows a three-phase full-wave rectifier circuit as an example, and shows a case where a so-called bridge circuit is formed by six diodes. The lead wires 19A and 19B for outputting an electromotive force are connected to both ends of the bridge circuit. The rectifier circuit board 17 may be provided with a capacitor C as a smoothing means for smoothing the electromotive force generated between both ends of the bridge circuit. On the other hand, the capacitor C is connected to a circuit outside the rectifier circuit board 17. May be provided.

  4B, the internal coil body 31A and the external coil body 32B (a phase), the internal coil body 31B and the external coil body 32C (b phase), the internal coil body 31C and the external coil body 32A (c phase). ) Are connected in series and are star-connected (neutral point n), and these a phase, b phase, c phase and n phase are connected to the rectifier circuit board 17. The rectifier circuit board 17 is the same as described above.

  The output load current can be increased by the coil connection shown in FIG. 4A, and the generated electromotive voltage can be increased by the coil connection shown in FIG. 4B. That is, the resistance of the entire armature coil can be selected by connecting the opposing coil bodies of the internal coil bodies 31A to 31C and the external coil bodies 32A to 32C in parallel or in series. Thus, it is possible to cope with the load state of the generated electromotive force, and on the other hand, the width for selecting the wire thickness that is easy to form the coil body according to the generated electromotive force is widened, and the degree of freedom in forming the coil body can be improved. Is.

  FIG. 5 shows a waveform diagram of the electromotive voltage generated in the armature coil in FIG. FIG. 5 (A) is a waveform diagram corresponding to FIG. 4 (B), and shows the state of the electromotive voltage generated in each of the internal coil bodies 31A to 31C and each of the external coil bodies 32A to 32C. That is, when the rotor 12 is rotated by an external force such as wind power, hydraulic power, or rotational force of the rotating body, as shown in FIG. 5A, the internal coil body 31A and the external coil body are rotated according to the rotation of the magnets 23A to 23D. An electromotive force is generated in each of 32B (a phase-n phase), internal coil body 31B and external coil body 32C (b phase-n phase), internal coil body 31C and external coil body 32A (c phase-n phase). The

  As shown in FIG. 5B, the electromotive voltages generated in the internal coil body 31A and the external coil body 32B are full-wave rectified and superimposed in the a phase of the bridge circuit of the rectifier circuit board 17, and the internal phase in the b phase. The electromotive voltage generated in the coil body 32A and the external coil body 32C is full-wave rectified and superimposed, and in the c phase, the electromotive voltage generated in the internal coil body 31C and the external coil body 32A is full-wave rectified and superimposed.

  Subsequently, as shown in FIG. 5C, each of the a-phase to c-phase electromotive voltages is superimposed on the output terminal of the bridge circuit of the rectifier circuit board 17, and the pulsating three-phase full-wave electromotive voltage is generated. Is generated. Then, as shown in FIG. 5D, a DC voltage smoothed by a smoothing capacitor C provided as appropriate on the rectifier circuit board 17 is output from the lead wires 19A and 19B.

  Thus, by configuring the armature coil with the internal coil bodies 31A to 31C and the external coil bodies 32A to 32C, the number of windings of the armature coil can be increased while reducing the size and thickness in a minimum space. The generated electromotive voltage and load current generated according to these connection states can be increased. Especially, as described above, even if the armature coil has a double structure, the peripheral side surface of the internal coil group and the external coil group The gap between the yoke and the magnet can be made the same as, for example, a single structure using only the conventional internal coil group, so that the electromotive force with respect to the size of the power generation device 11 It is possible to improve the generation efficiency.

  In addition, by using a slotless core or yoke that generates electromotive force in the armature coil, it is possible to minimize the escape torque for rotational start with respect to the magnet's attractive force. Can be rotated. That is, in the case of a coil yoke with a slot, when the rotor (armature coil) 12 is rotated, a torque is required to escape from the attractive force of the magnets 23A to 23D, but the rotor 12 is rotated by making it slotless. So-called cogging is eliminated, and rotation can be made smooth even with a slight wind or a slight hydropower.

  For example, when the power generation device 11 of the present invention is used as a power source for a flush toilet, the operation power of a sensor or an automatic valve can be supplied by generating electricity with the power generation device and storing it every time water is passed. It is. In other words, sensor power supplies used in conventional flush toilets require button batteries to be replaced once a year because of the use of button batteries. However, by applying the power generation device of the present invention, it is possible to generate power even with a slight water flow, and it is possible to eliminate the need for replacement or the like and to eliminate the need for electrical wiring or the like. The same applies to other embodiments described below.

  Next, FIG. 6 shows a configuration diagram of a power generator according to a second embodiment of the present invention. 6A and 6B show an outer rotor type power generation device, FIG. 6A is a plan view of the inside of the housing, FIG. 6B is a cross-sectional view taken along the line BB in FIG. 6A, and FIG. These are the block diagrams seen from the bottom face except a base. 6 (A) to 6 (C), the power generation apparatus 41 is configured such that the rotor 42 includes the stator 43 and is attached to the base 44 via bearings 45A and 45B. The base 44 is formed with a cylindrical shaft support portion at a disc-shaped central portion, and the bearings 45A and 45B are attached to the inner wall of the shaft support portion.

  In the rotor 42, a boss 52 is provided at the center portion of an inverted saddle-shaped magnet yoke 51, and a shaft 53 is fixed to the boss 52. The same four-pole magnets 54 </ b> A to 54 </ b> D are fixed to the inner side wall of the magnet yoke 51. The magnets 54A to 54D are the same as the magnets 23A to 23D shown in FIG.

  In the stator 43, a disk-shaped slotless type laminated core 61 is attached to the outer periphery of the shaft support portion of the base 44, and a hollow internal coil body as shown in FIG. An internal coil group constituted by 62A to 62C and an external coil group constituted by hollow external coil bodies 63A to 63C are attached so as to cover the internal coil group.

  That is, as in FIG. 3, the three internal coil bodies 62 </ b> A to 62 </ b> C are arranged in parallel at an interval of 120 degrees with respect to the peripheral side surface of the laminated core 61 to form an internal coil group. The outer coil bodies 63A to 63C are covered with the inner coil group by 60 degrees from the inner coil bodies 31A to 31C in parallel with each other at 120 degree intervals with respect to the peripheral side surface in the case of a typical disk. The external coil group is arranged, and the peripheral side surface of the internal coil group and the peripheral side surface of the external coil group have the same outer periphery. The inner coil bodies 62A to 62C and the outer coil bodies 63A to 63C are star-connected as shown in FIG. 4 (A) or FIG. 4 (B) and the phases facing each other are connected to each other.

  A rectifier circuit board 46 is provided on the base 44 and below the stator 43, for example. This rectifier circuit board 46 converts the electromotive force generated in the same manner as described above into, for example, a direct current and outputs it to the outside from the lead wires 48A and 48B.

  Here, the assembly of the power generation device 41 will be briefly described. First, the boss 52 is fixed to the magnet yoke 51 by caulking or the like, and the shaft 53 is press-fitted into the boss 52. Magnets 54 </ b> A to 54 </ b> D magnetized as described above are arranged on the inner wall of the side portion of the magnet yoke 51 in a non-contact manner and fixed by adhesion. On the other hand, each of the internal coil bodies 62 </ b> A to 62 </ b> C is disposed on the laminated yoke 61, and is bonded and fixed at the abutting portion and the abutting portion with the laminated yoke 61.

  Further, each of the external coil bodies 63A to 63C is arranged as described above so as to cover the internal coil bodies 62A to 62C, and is bonded and fixed at a portion where they abut and a portion where they abut each of the internal coil bodies 31A-31C. To do. Thereby, the coil assembly of the stator 43 including the laminated yoke 61 is formed.

  Subsequently, the rectifier circuit board 46 to which the lead wires 48A and 48B are connected is attached to the coil assembly and soldered with a corresponding tap or the like. Further, bearings 45 </ b> A and 45 </ b> B are attached to the base 44, and the coil assembly is bonded and fixed to the outer periphery of the shaft support portion of the base 44. Then, the shaft 53 of the rotor 42 is press-fitted into the bearings 45A and 45B.

  The generation of the electromotive force of the power generator 41 is the same as that of the power generator 11. That is, similarly to the above, the armature coil is constituted by the internal coil bodies 62A to 62C and the external coil bodies 63A to 63C, thereby increasing the number of windings of the armature coil while reducing the size and thickness in a minimum space. The generated electromotive voltage and load current generated according to these connection states can be increased, and even if the armature coil has a double structure as described above, the peripheral side surface of the internal coil group and the external By making the peripheral side surfaces of the coil group the same outer periphery, the gap between the yoke and the magnet can be made the same as, for example, a single structure using only the conventional internal coil group. The generation efficiency of electromotive force can be improved. Moreover, since the escape torque at the start of rotation can be minimized by making the coil yoke 61 a slotless type, the rotor can be rotated even with a minute external force, and the efficiency of power generation can be improved. It can be done.

  Next, FIG. 7 shows a configuration diagram of a power generator according to a third embodiment of the present invention. FIG. 7 shows an outer rotor type brushless coreless motor. FIG. 7A is a structural view seen from the bottom, excluding the brush base, and FIG. 7B is a cross-sectional view taken along the line CC in FIG. FIG. 7C is a configuration diagram of the brush base. 7A to 7C, the power generation device 71 has a rotor 73 disposed so as to include a stator 72 and is housed in a housing 74. The housing 74 has a cylindrical shape, one of which is open, and a cylindrical shaft support portion formed at the other central portion.

  In the stator 72, a disk-shaped magnet yoke 81 is fixed to the inner wall of the shaft support portion, and, for example, four magnets 82A to 82D mainly generating field magnetic flux are fixed to the outer periphery of the magnet yoke 81. . The magnets 82A to 82D are the same as described above.

  In the rotor 73, the shaft 91 is fixed through the center of the disc-shaped hub 92, and for example, six commutators 93A to 93F (six segments) are fixed to the hub 92 on one side of the shaft 91. The commutators 93A to 93F are short-circuited between commutators facing each other (see FIG. 8A). Further, the stator 72 and the hub 92 are assumed to be virtual disks, and the inner coil group and the hollow outer coil bodies 95A to 95A are configured with hollow inner coil bodies 94A to 94C as shown in FIG. An external coil group having a configuration of 95C is attached so as to cover the internal coil group. And

  That is, as in FIG. 3, each of the three internal coil bodies 94A to 94C is arranged in parallel at intervals of 120 degrees with respect to the peripheral side surface when the stator 72 and the hub 92 are virtual disks. Each of the three external coil bodies 95A to 95C is covered with 60 from the above-mentioned internal coil bodies 94A to 94C with respect to the peripheral side surface when the coil group is a virtual disk. The outer coil groups are arranged in parallel at intervals of 120 degrees to form an external coil group, and the peripheral side surface of the internal coil group and the peripheral side surface of the external coil group have the same outer periphery.

  The inner coil bodies 94A to 94C and the outer coil bodies 95A to 95C are configured such that coils facing each other are connected in parallel or in series with a star connection, and each open terminal is connected to the commutator 93A to 93A in a connected state. Connected to 93F. In the present embodiment, one end of the internal coil body 94A is connected to the commutator 93A, one end of the internal coil body 94B is connected to the commutator 93B, and one end of the internal coil body 94C is connected to the commutator 93C. One end of 95A is connected to commutator 93D, one end of external coil body 95B is connected to commutator 93E, and one end of external coil body 95C is connected to commutator 93F.

  In this case, the inner coil group and the outer coil group are reinforced and fixed by a predetermined number of reinforcing rings 96. The reinforcing ring 96 is provided as a precaution so as not to be detached when the armature coil rotates, but the internal coil bodies 94A to 94C and the external coil bodies 95A to 95C are originally bonded to each other. Since it is fixed by an agent or the like, it is fixed more strongly than the conventional bonding between coil bodies, and the prevention of separation by rotation is enhanced.

  Then, the shaft 91 is rotatably attached to the inner wall of the shaft support portion of the housing 74 by a bearing (for example, a sleeve-type bearing, and may be the above-described ball bearing) 75, and extends from the housing 74 of the shaft 91. An E-ring 76 is provided.

  On the other hand, a brush base 77 serving as a lid portion of the housing 74 is provided on the opening side of the housing 74, and for example, two (or four) brushes 78A and 78B are provided at 90 ° intervals on the corresponding brush fixing portion. And fixed so as not to spread by contacting the commutators 93A to 93F. The brush 78A is connected to the lead wire 79A, and the brush 78B is connected to the lead wire 79B. The interior of the housing 74 is substantially sealed by fitting and fixing the brush base 77 to the opening portion of the housing 74. Note that the housing 74 also serves as a coil yoke, and naturally the slots that affect the cogging during rotation are not formed.

  Here, the assembly of the power generation device 71 will be briefly described. First, the magnets 82A to 82D in which the bearing 75 is press-fitted (or bonded) to the magnet yoke 81 and magnetized on the outer periphery of the magnet yoke 81 as described above. Are placed in contact with each other and fixed by adhesion. On the other hand, the hub 77 is press-fitted into the shaft 91, and the magnets 82A to 82D are encapsulated with a minute gap, and the internal coil bodies 94A to 94C are bonded and fixed to the hub 77 (a dedicated jig is used for these). Further, each of the external coil bodies 95A to 95C is arranged as described above so as to cover the internal coil bodies 94A to 94C, and is bonded and fixed at a portion where they abut and a portion where they abut each of the internal coil bodies 94A-94C. At the same time, the inner coil group and the outer coil group are bonded and fixed by the reinforcing ring 96.

  On the other hand, commutators 93A to 93F that are appropriately short-circuited to each other are attached to the shaft 91, and one of the corresponding internal coil bodies 94A to 94C and external coil bodies 95A to 95C is attached to the risers of the commutators 93A to 93F. Are connected by soldering or the like, and the other tap is fixed to the reinforcing ring 96 by soldering or the like. Further, the magnet yoke 81 is inserted into the inner wall of the shaft support portion of the housing 74 and fixed by adhesion.

  On the other hand, the brushes 78A and 78B are attached to the brush base 77 and connected to each other, and the corresponding lead wires 79A and 79B are connected by soldering or the like, and the brush base 77 is attached to the housing 74 with the brushes 78A and 78B. Install while spreading. Then, by connecting the lead wires 79A and 79B to the power source and supplying current to operate the motor, the brush base 77 is rotated and the housing 74 is caulked or glued at an appropriate timing position. It is attached by etc.

  8 and 9 are explanatory diagrams of the power generation state in the power generation device according to FIG. FIG. 8A is an explanatory diagram showing a commutator and a brush, and FIG. 8B is a waveform diagram showing a state of electromotive force generated in each coil body.

  In FIG. 8A, the internal coil bodies 94A to 94C and the external coil bodies 95A to 95C are star-connected in parallel or in series, and each of these phases is a six-segment commutator 93A to 93F as described above. The commutators facing each other (93A and 93D, 93B and 93E, and 93C and 93F) are short-circuited. Further, brushes 78A and 78B disposed adjacent to such commutators 93A to 93F at 90 degrees are in contact with each other. Magnets 82A to 82D facing the internal coil bodies 94A to 94C and the external coil bodies 95A to 95C connected to the commutators 93A to 93F are indicated by broken lines.

  Then, when the rotor 73 (internal coil bodies 94A to 94C and external coil bodies 95A to 95C) is rotated via the shaft 91, as shown in FIG. 8B, each of the internal coil bodies 94A to 94C and the external coils. In each of the bodies 95A to 95C, the maximum electromotive force is generated at the boundary between the north and south poles of the magnets 82A to 82D, and no electromotive force is generated when the polarity of the magnets 82A to 82D is switched. That is, the electromotive force indicated by the oblique lines in FIG. 8B is generated in each of the internal coil bodies 94A to 94C and the external coil bodies 95A to 95C.

  In this case, since the commutators 93A to 93F are short-circuited as described above, the electromotive forces are superimposed on the short-circuited commutators as shown in FIG. 9A. It becomes the state. Further, as shown in FIG. 9B, the electromotive force superimposed between the commutators is superimposed between the lead wires 79A and 79B, and those from the minimum to the maximum are shown in FIG. 9C. As shown in FIG. 2, the electromotive force P generated between the lead wires 79A and 79B is obtained.

  Thus, even in the outer rotor type brushed power generation device 71 having a 6-segment commutator, the armature coils are configured by the internal coil bodies 31A to 31C and the external coil bodies 32A to 32C in the same manner as described above. By increasing the number of windings of the armature coil while reducing the size and thickness in a minimum space, the generated electromotive voltage and load current generated according to these connection states can be increased. As described above, even if the armature coil has a double structure, the gap between the yoke and the magnet can be made the same as the single structure by making the peripheral side surface of the internal coil group and the peripheral side surface of the external coil group the same outer periphery. Therefore, the generation efficiency of electromotive force can be improved with respect to the size of the power generation device 11. In addition, the escape torque at the start of rotation with respect to the magnet's attractive force can be minimized, and the armature coil can be rotated with a minute external force, eliminating cogging during rotation and rotating even with light winds or slight hydropower Can be made smooth.

  The power generator of the present invention generates an electromotive force by an external force such as wind power or hydraulic power, or a rotational force (external force) from the outside of a rotating body, etc. It is suitable for use in applications.

It is a lineblock diagram of the power generator concerning a 1st embodiment of the present invention. It is a partial cross section perspective view of the electric power generating apparatus shown in FIG. It is explanatory drawing of the armature coil of the electric power generating apparatus shown in FIG. It is explanatory drawing of the armature coil and rectifier circuit of the electric power generating apparatus shown in FIG. It is a wave form diagram of the electromotive voltage which arises in the armature coil in FIG. It is a block diagram of the electric power generating apparatus which concerns on 2nd Embodiment of this invention. It is a block diagram of the electric power generating apparatus which concerns on 3rd Embodiment of this invention. It is explanatory drawing (1) of the electric power generation state in the electric power generating apparatus which concerns on FIG. It is explanatory drawing (2) of the electric power generation state in the electric power generating apparatus which concerns on FIG.

Explanation of symbols

11, 41, 71 Power generation device 12 Rotor 13 Stator 16 Coil yoke 22 Magnet yoke 23A-23D Magnet 31A-31C Internal coil body 32A-32C External coil body

Claims (7)

A power generation device including a magnet and an armature coil, and including a core or a yoke that generates an electromotive force in the armature coil by rotating the magnet by a predetermined external force,
The armature coil is
An internal coil group in which a predetermined number of hollow internal coil bodies each having a predetermined shape wound around a virtual disk or a disk-shaped core are arranged in parallel;
A predetermined number of hollow external coil bodies, each having a predetermined number of turns, are arranged in parallel to cover the inner coil group with respect to the peripheral side surface when the internal coil group is a virtual disk. An external coil group;
A power generator characterized by comprising: 2. The power generator according to claim 1, wherein the core or yoke that generates electromotive force in the armature coil is slotless. 3. The power generator according to claim 1, wherein a peripheral side surface of the internal coil group and a peripheral side surface of the external coil group have the same outer periphery. 4. The power generation device according to claim 1, wherein each of the internal coil bodies and each of the external coil bodies has a hollow substantially trapezoidal shape or a hollow bow shape, A power generation device, wherein the power generators are arranged at intervals of 120 degrees, and the external coil bodies are arranged at intervals of 120 degrees by being shifted by 60 degrees with respect to the internal coil bodies. 5. The power generation device according to claim 1, wherein the internal coil body and the external coil body are connected in series or in parallel with each other in mutually opposing phases, and each is star-connected. A featured power generator. 6. The power generator according to claim 1, further comprising a rectifier circuit that converts an electromotive force generated in the armature coil into a direct current. The power generator according to claim 6, wherein the rectifier circuit includes a smoothing unit.

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