JP2005198371A - Micro generator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a micro generator which can be made compact in simple structure, and enables a light emitting element to easily emit light merely by slightly turning, rocking, or rotating it. <P>SOLUTION: This micro generator is equipped with a body case 1 which is closed with a cover 2, a plurality of cores 3 which are fixed circularly to the body case, coils 4 which are wound on the core, light emitting elements 5 which connect with the ends of the coils and are arranged outside the body case, a permanent magnet 6 which is stored at the internal circumference of the plurality of cores, an eccentric weight 8 which is fixed via a spacer to the permanent magnet, a turning shaft 9 which is fixed through the eccentric weight and the permanent magnet, and a bearing hole 10 which is made in the body case on which the turning shaft is pivoted and the cover. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a micro power generator that generates electric power by rotating, swinging, or rotating. More specifically, the present invention relates to co-rotation of a main body case side and a rotating shaft side by rotating, swinging, or rotating. The present invention relates to a micro power generator in which a light emitting element disposed outside a main body case is turned on by causing a deviation by an eccentric weight.

  In recent years, low-power and high-brightness LEDs have been developed and are used for decoration, signs, advertisements, signals, etc. A battery is required to turn on the LED.

For this purpose, for example, a wheel nut for fixing a tire wheel to a vehicle axle, a power source incorporated in the wheel nut, a light emitting unit incorporated in the wheel nut and emitting light by electric power from the power source, and the wheel A switching mechanism that is incorporated in a nut and that opens and closes contacts using centrifugal force associated with rotation of a mounting tire wheel provided in the middle of a circuit that supplies power from the power source to the light emitting unit (See Patent Document 1), and further, either the generator field or the armature is fixed coaxially to the disk wheel for an automobile tire, and the inertia weight is connected to the other side. When the armature rotates relative to the armature, the lighting indicator and the charger provided on the disk wheel are connected to the output of the generator, and the generator generates power. When the power is on, the lighting indicator is turned on and the charger is charged. When the generator does not generate power, the lighting indicator is turned on by the power charged in the charger (see Patent Document 2). Or a rotating body that rotates around the central axis and a magnet on one side and a coil body on the other side, and is configured to generate electric power by rotating. The light-emitting power generator provided with the rotating body is rotated while rotating the central shaft or the rotating body by the rotational force of the other rotating body (see Patent Document 3), and is integrally attached to the disc wheel. A case that rotates integrally with the disk wheel with rotation of the disc wheel, a stationary member that is constituted by one or a plurality of stationary plates, and that is rotatably supported by a support shaft of the case, and the case A bearing member disposed between and / or between the stationary members, a weight for biasing the stationary member to a substantially stationary position regardless of rotation of the case, and a stationary member The light emitting element provided, a magnet disposed in the case, and a coil wound around a winding core disposed in the stationary member, and the magnet moves relative to the coil. Therefore, the wheel cap is provided with power generation means for generating electric power to be supplied to the light emitting element, and the bearing member is arranged on the outer peripheral portion of the case and the stationary member and / or on the outer peripheral portion of the stationary members. In addition, a device (see Patent Document 4) in which the weight is disposed in the bearing portion is disclosed.
JP 11-51028 A (second page) JP 11-235091 A (2nd page) JP 2002-2569 A (page 2) JP 2003-127602 A (second page)

  However, a wheel nut for fixing the tire wheel to the axle of the vehicle, a power source incorporated in the wheel nut, a light emitting unit incorporated in the wheel nut and emitting light by power from the power source, and incorporated in the wheel nut. A switching mechanism that opens and closes contacts by using centrifugal force associated with rotation of a tire wheel at a mounting destination provided in the middle of a circuit for supplying power from the power source to the light-emitting unit. The wheel nut is blinking, but it needs power.

  Furthermore, when either the field or armature of the generator is fixed coaxially to the disk wheel for an automobile tire and the inertia weight is connected to the other, the tire rotates and the field and the armature rotate relative to each other. Connect the lighting indicator and the charger provided on the disc wheel to the output of the generator, and when the generator is generating electricity, the lighting indicator is turned on by the output and the charger is charged. However, when the generator does not generate electricity, the lighting indicator is turned on with the power charged in the charger, the lighting position is limited to the disk wheel for automobile tires rotating at high speed, A charger is required and the apparatus becomes large.

  In addition, the center axis and a rotating body that rotates around the center axis are provided, and a magnet is provided on one side and a coil body is provided on the other side so that power is generated by rotation, and either the center axis or the rotating body emits light. The light emitting power generator provided with the body is rotated while rotating the central shaft or the rotating body by the rotational force of another rotating body to emit light, and the same structure as that conventionally used as a bicycle generator belongs to.

  In addition, a case that is integrally attached to the disc wheel and that rotates integrally with the disc wheel as the wheel rotates and a single or a plurality of stationary plates are rotatably supported on the support shaft of the case. A stationary member, a bearing member disposed between the case and the stationary member and / or between the stationary members, and the stationary member is biased to a substantially stationary position regardless of the rotation of the case. A weight, a light emitting element disposed on the stationary member, a magnet disposed on the case, and a coil wound around a winding core disposed on the stationary member, A wheel cap comprising: a power generation means for generating electric power to supply power to the light emitting element by moving a magnet with respect to the coil, wherein the bearing member is connected to the case and the case In the case where the weight is disposed in the outer peripheral portion of the stop member and / or the outer peripheral portion of the stationary members and the weight is disposed in the bearing portion, it is integrally attached to the disk wheel that rotates at high speed. This is a large-scale device.

  In view of the above-described problems, the micro power generator according to the present invention is a result of diligent research. As a result, the micro power generator according to claim 1 includes a main body case that is closed by a lid, and a plurality of cores that are annularly fixed to the main body case A coil attached to the core, a light emitting element connected to the end of the coil and disposed outside the main body case, a permanent magnet housed on the inner periphery of the plurality of cores, and a spacer on the permanent magnet Equipped with an eccentric weight fixed by interposition, a rotating shaft penetrating and fixing the eccentric weight and the permanent magnet, and a bearing hole formed in a body case and a lid that pivotally attach the rotating shaft. It is.

  Furthermore, the micro power generator according to claim 2 includes a main body case closed by a lid, a permanent magnet fixed in an annular shape to the main body case, and an annularly assembled core housed in the inner circumference of the permanent magnet. A coil attached to the core, a light emitting element connected to the coil and disposed outside the main body case, an eccentric weight fixed to a plurality of cores with spacers interposed therebetween, and an eccentric weight and the core penetrating the core A fixed rotation shaft, a main body case for pivotally mounting the rotation shaft, and a bearing hole formed in the lid are provided.

  Furthermore, the micro power generator according to claim 3 is connected to the main body case that is closed by the lid, a plurality of cores that are annularly fixed to the main body case, a coil that is attached to the core many times, and a coil. A light emitting element disposed outside the main body case, a permanent magnet rotatably accommodated on the inner periphery of a plurality of cores, and an eccentric fixed to the main body case or the lid to shift the co-rotation with the permanent magnet A rotating shaft having a weight, an eccentric weight, a main body case, and a lid, which are rotatable and fixed with a permanent magnet, and a bearing hole formed at the center of the main body case on which the rotating shaft is attached and the lid. It is provided.

  In addition, the micro power generator according to claim 4 has a main body case that is closed by a lid, a permanent magnet that is annularly fixed to the main body case, and an annular shape that is rotatably accommodated on the inner periphery of the permanent magnet. To shift the co-rotation of multiple cores and permanent magnets, multiple cores assembled to the core, light emitting elements connected to the coils and disposed outside the main body case, and the cores Equipped with an eccentric weight fixed to the main body case or the lid, a rotating shaft penetrating and fixed to a spacer fixed with a plurality of cores, a main body case for pivotally mounting the rotating shaft, and a bearing hole formed at the center of the lid It is a thing.

  The micro power generator of the present invention can be formed compactly with a simple structure, and can easily emit light by simply rotating, swinging, or rotating. For example, the micro power generator is attached to a bicycle axle. However, it can be turned on even if a person walks normally holding it in his hand or using movements of the ocean, river waves, winds, etc. This is an epoch-making and highly practical invention that can be displayed in the surrounding area and can be turned on in an unexpected place and has unexpectedness.

  The present invention relates to a micro power generator that generates electric power by rotating, swinging, or rotating. More specifically, the present invention relates to co-rotation of a main body case side and a rotating shaft side by rotating, swinging, or rotating. The present invention relates to a micro-generator that causes a light emitting element disposed outside the main body case to light by causing a deviation by an eccentric weight, and the micro-generator according to claim 1 is rotated or oscillated. A micro-generator that generates electricity by having a substantially bottomed cylindrical main body case 1 having a stepped portion 1a and having an enlarged diameter portion closed by a lid 2, and a bottom portion of the main body case 1 A plurality of cores 3 fixed in an annular shape along the circumference, each coil 4 attached to each core 3 many times, and an end of each coil 4 connected to the outer side of the body case 1 One or a plurality of light emitting elements 5 disposed in the front, A disk-shaped permanent magnet 6 rotatably accommodated on the inner periphery of a plurality of cores 3 fixed in an annular shape, and a substantially cage for shifting the co-rotation fixed to the permanent magnet 6 with a spacer 7 interposed therebetween. -Shaped eccentric weight 8, a rotating shaft 9 penetratingly fixed to the eccentric weight 8 and the permanent magnet 6, and the main body case 1 and the lid body on which the rotating shaft 9 is rotatably mounted. 2 and each bearing hole 10.10 formed at the center of each.

  Furthermore, the micro power generator according to claim 2 is a micro power generator that generates electric power by turning or swinging, and the lid portion 2 closes the opening having a stepped portion 1a and having the diameter expanded. A substantially bottomed cylindrical main body case 1, a single or plural permanent magnets 6 fixed in an annular shape along the inner periphery of the bottom portion of the main body case 1, and an inner periphery of the permanent magnet 6 so as to be rotatable. A plurality of cores 3 assembled in an annular shape, each coil 4 attached to each core 3 many times, and an end of each coil 4 are connected to the outside of the main body case 1. One or a plurality of light emitting elements 5 to be provided, a substantially bowl-shaped eccentric weight 8 for shifting the co-rotation which is fixed to the plurality of cores 3 assembled in an annular shape with spacers 7 interposed therebetween, and the eccentric weight 8 A rotating shaft 9 penetrating and fixed to a spacer to which the plurality of cores 3 are fixed, and the rotating shaft 9 being rotatable In the main body case 1 and the center of the lid 2 to wear it is obtained a bearing hole 10.10 which is formed respectively.

  Furthermore, the micro power generator according to claim 3 is a micro power generator that generates electric power by rotating, and substantially has an opening having a stepped portion 1a and having an enlarged diameter by a lid 2. A bottom cylindrical main body case 1, a plurality of cores 3 fixed in an annular shape along the inner periphery of the bottom of the main body case 1, respective coils 4 attached to the cores 3 many times, One or a plurality of light emitting elements 5 connected to the end of the coil 4 and disposed outside the main body case 1 and a circle rotatably accommodated on the inner periphery of the plurality of cores 3 fixed in an annular shape A plate-like permanent magnet 6, a substantially bowl-shaped eccentric weight 8 fixed to the main body case 1 or the lid body 2 in order to shift the corotation with the permanent magnet 6, the eccentric weight 8 and the main body case 1; A rotary shaft 9A that allows the lid 2 to rotate and the permanent magnet 6 to pass therethrough, and the rotary shaft 9 Those having a rotatably to the body case 1 to pivotally and respective bearing hole 10.10 formed at the center of each of said lid body 2.

  Furthermore, the micro power generator according to claim 4 is a micro power generator that generates electric power by rotating it, and substantially has an opening having a stepped portion 1a that is expanded in diameter by a lid 2. A bottom cylindrical main body case 1, one or a plurality of permanent magnets 6 fixed in an annular shape along the inner periphery of the bottom of the main body case 1, and an annular shape rotatably accommodated in the inner periphery of the permanent magnet 6 A plurality of cores 3 assembled, respective coils 4 attached to the respective cores 3 many times, and a single unit connected to the ends of the respective coils 4 and disposed outside the main body case 1 Alternatively, a plurality of light emitting elements 5 and a substantially bowl-shaped eccentric weight 8 fixed to the body case 1 or the lid body 2 in order to shift the co-rotation of the plurality of cores 5 and the permanent magnet 6 assembled in an annular shape. A rotating shaft 9A penetrating and fixed to a spacer 7 to which the plurality of cores 5 are fixed, and the rotating shaft 9 The is that a rotatably the main body case 1 and the lid of the formed respectively in the second center bearing holes 10.10 for pivotally.

  Hereinafter, a detailed description will be given with reference to the drawings of an embodiment of the micro generator of the present invention. FIG. 1 is a plan view for explaining the main part of the embodiment 1 of the micro generator of the present invention. FIG. 3 is an explanatory view showing a cross section of the micro generator according to the first embodiment of the present invention, FIG. 3 is a plan view for explaining a main part of the second embodiment of the micro power generator according to the present invention, and FIG. FIG. 5 is an explanatory view showing a cross section of a second embodiment of the micro power generator of the present invention, FIG. 5 is a plan view for explaining a main part of the third embodiment of the micro power generator of the present invention, and FIG. FIG. 7 is an explanatory view showing a cross section of a third embodiment of the generator, FIG. 7 is a plan view for explaining a main part of the fourth embodiment of the micro generator of the present invention, and FIG. 8 is a micro generator of the present invention. FIG. 9 is an explanatory diagram showing a cross section of Example 4 of the present invention, and FIG. It is a diagram.

  That is, in the first embodiment of the micro-generator of the present invention, as shown in FIGS. 1 and 2, the main body case 1 is an insulating member such as a synthetic resin and has a small size and an outer diameter of about 50 mm and a height of about 20 mm. It is formed in a bottom cylindrical shape, and is provided with a disc-like lid body 2 for closing the opening, and is closed to the opening of the main body case 1 by means such as adhesion after assembling. A plurality of cores 3 to be described later are fixed in an annular shape at the bottom of the main body case 1 and a space is provided for turning an eccentric weight 8 to be described later by providing a stepped portion 1a on the circumference of the trunk to increase the diameter. Is.

  A plurality of cores 3 are annularly assembled. As shown in FIG. 9, the outer peripheral side and the inner peripheral side of the core 3 are formed in parallel arcs, respectively, and the outer peripheral side and the inner peripheral side are formed. The constriction is formed in a substantially U-shape on both sides between the two and the constricted portion 3a is attached to a coil 4 to be described later. The adjacent cores 3 are stable at both ends on the outer peripheral side. In addition, the step 3b is formed so as to overlap each other so that it can be fixed in an annular shape along the inner periphery of the bottom of the main body case 1, and the core 3 is assembled in an annular shape with about 3 to 8 cores 3. It is.

  Next, the coil 4 is made of a thin conductive copper wire and is wound around the attachment portion 3a of each core 3 many times. Both ends of the coil 4 are side walls of the main body case 1 so that they can be connected to a light emitting element 5 described later. Is penetrated.

  Next, the light emitting element 5 is a low-power and high-intensity LED, and the lead wires on both sides are connected to the ends of the respective coils 4 by means such as soldering, and are disposed outside the main body case 1. One or two may be used, and the color to be emitted is used with appropriate consideration.

  Further, the permanent magnet 6 is formed in a disc shape and is rotatably accommodated by a rotation shaft 9 described later on the inner periphery of a plurality of cores 3 that are annularly fixed to the inner periphery of the bottom of the main body case 1. .

  Further, the eccentric weight 8 is formed in a substantially bowl shape with a heavy metal or the like, that is, as shown in FIG. The hole is drilled in the central chevron and has a semicircular outer periphery. The eccentric weight 8 is fixed by means such as adhesion and welding with a permanent magnet 6 and a spacer 7 interposed. In this case, a stepped portion 1a is provided around the body circumference of the main body case 1 to rotate the space, and the permanent magnet 6 and the plurality of cores 3 are rotated together by inertia to shift the space. .

  The rotation shaft 9 is provided to penetrate through the rotation fulcrum of the eccentric weight 8 and the spacer 7 and the permanent magnet 6 and rotate in the main body case 1. 10, both ends are attached to the shaft.

  Next, the bearing hole 10.10 is formed at the center of each of the main body case 1 and the lid body 2, and the pivot shaft 9 is pivotally attached thereto.

  Further, in the micro power generator according to the second embodiment of the present invention, as shown in FIGS. 3 and 4, the permanent magnet 6 is fixed to the main body case 1 side, and the plurality of cores 3 are disposed on the rotating shaft 9 side. The main body case 1 is an insulating member such as a synthetic resin formed in a small, substantially bottomed cylindrical shape having an outer diameter of 50 mm and a height of about 20 mm. A plate-like lid 2 is provided, which is closed at the opening of the main body case 1 by means such as adhesion after assembling. A permanent magnet 6 (to be described later) is fixed to the bottom of the main body case 1 in an annular shape. A space is provided for rotating an eccentric weight 8 (to be described later) by providing a stepped portion 1a on the trunk circumference to increase the diameter.

  The permanent magnet 6 may be either a single ring-shaped one or a plurality of circular-arc-shaped ones that are connected to each other. It is fixed in a ring shape along.

  Next, a plurality of cores 3 are assembled in an annular shape, and the outer peripheral side and the inner peripheral side are formed in a parallel arc shape, and substantially U-shaped on both sides between the outer peripheral side and the inner peripheral side. A constriction is formed, and the constriction 3a is used as a constriction part 3a for concluding a coil 4 to be described later. Overlapping step parts 3b are provided so that adjacent cores 3 are stable and can be fixed in an annular shape. A disk-shaped spacer 7 is fixed to one surface of the annular core 3 and the spacer 7 is interposed between an eccentric weight 8 to be described later.

  Next, the coil 4 is made of a thin conductive copper wire and is wound around the attachment portion 3a of each core 3 many times. Both ends of the coil 4 are a rotation shaft described later so as to be connected to a light emitting element 5 described later. 9, the side wall of the main body case 1 is penetrated.

  Next, the light-emitting element 5 is a low-power, high-brightness LED, the lead wires on both sides are connected to the ends of the respective coils 4 by means such as soldering, and the main body case 1 along the rotating shaft 9. One or a plurality are arranged on the outer side of the, and the color is used with appropriate consideration.

  Further, the eccentric weight 8 is formed in a substantially bowl shape with a heavy metal or the like, that is, as shown in FIG. A through hole is drilled in the central chevron and has a semicircular outer periphery, and the eccentric weight 8 is fixed by means such as adhesion and welding with an annular core 3 and a spacer 7 interposed. In this case, a stepped portion 1a is provided around the body circumference of the main body case 1 to rotate the space, and the permanent magnet 6 and the plurality of cores 3 are rotated together by the inertia. It is.

  The rotating shaft 9 is formed by penetrating and fixing an eccentric weight 8 and a spacer 7 in which a plurality of cores 3 are fixed in an annular shape, and rotates the plurality of cores 3 and the eccentric weight 8 together in the main body case 1. Yes, it is pivotally mounted in a bearing hole 10.10, which will be described later.

  Next, the bearing hole 10.10 is formed at the center of each of the main body case 1 and the lid body 2, and the pivot shaft 9 is pivotally attached thereto.

  That is, the micro-generator of the present invention can turn on the light-emitting element 5 with a slight rotation or swing. The movement between the case 1 side and the rotating shaft 9 side is shifted by the eccentric weight 9, the permanent magnet 6 and the coil 4 move differently, and the coil 4 crosses the magnetic field of the permanent magnet 6 to generate power. The light emitting element 5 is turned on.

  In addition, in the third or fourth embodiment, the rotating shaft 9 is a rotating shaft 9A that rotates with other power. For example, a bicycle wheel axle, a windmill rotating shaft 9A that is rotated by wind, Although the configuration is the same as that of the first and second embodiments, the description thereof will be omitted. However, the size of the main body case 1 and the like is increased depending on the size of the diameter of the rotating shaft 9A passing through the center. Is.

  Since the rotating shaft 9A rotates, in the third embodiment, the permanent magnet 6 is fixed to the rotating shaft 9A so that the plurality of cores 3 and the eccentric weight 9 are fixed to the main body case 1 side. In the fourth embodiment, a spacer 7 having a plurality of cores 3 fixed to a rotating shaft 9A is penetrated and fixed, and a permanent magnet 6 and an eccentric weight 9 are fixed to the body case 1 side. The rotary shaft 9A is rotatable.

  That is, by rotating the rotating shaft 9A of a bicycle or the like, the permanent magnet 6 or the plurality of cores 3 fixed on the rotating shaft 9A side is rotated, and the eccentric weight 9 fixed on the main body case 1 side causes the main body case 1 side to move. The light emitting element 5 is turned on by causing a shift in rotation with the plurality of fixed cores 3 or permanent magnets 6.

  The micro power generator of the present invention can be compactly formed with a simple structure, and can easily emit light by simply rotating, swinging, or rotating. Even when walking normally, it can be turned on by the sea, river waves, wind, etc., and it can be attached to the axle of a bicycle wheel and turned on when traveling, and it can be attached anywhere and turned on It is possible.

  FIG. 1 is a plan view for explaining a main part of a first embodiment of the micro-generator of the present invention.   FIG. 2 is an explanatory view showing a cross section of the first embodiment of the micro-generator of the present invention.   FIG. 3 is a plan view for explaining a main part of a second embodiment of the micro-generator of the present invention.   FIG. 4 is an explanatory view showing a cross section of a second embodiment of the micro-generator of the present invention.   FIG. 5 is a plan view for explaining a main part of a third embodiment of the micro-generator of the present invention.   FIG. 6 is an explanatory diagram showing a cross section of a third embodiment of the micro-generator of the present invention.   FIG. 7 is a plan view for explaining a main part of a micro generator according to a fourth embodiment of the present invention.   FIG. 8 is an explanatory view showing a cross section of a micro generator according to a fourth embodiment of the present invention.   FIG. 9 is a plan view of the core of the embodiment of the micro-generator of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Main body case 1a Step part 2 Cover body 3 Core 3a Attachment part 3b Step part 4 Coil 5 Light emitting element 6 Permanent magnet 7 Spacer 8 Eccentric weight 9 Rotating shaft 9A Rotating shaft 10 Bearing hole

Claims (4)

  A micro-generator that generates electric power by rotating or swinging, a substantially bottomed cylindrical main body case that has a stepped portion and closes an opening whose diameter has been expanded by a lid, and the main body case A plurality of cores that are fixed in an annular shape along the inner periphery of the bottom portion, each coil that is secured to each core many times, and an end portion of each coil that is connected to the outside of the main body case. Single or plural light emitting elements, a disk-like permanent magnet rotatably accommodated in the inner periphery of the plurality of cores fixed in an annular shape, and a co-rotation that is fixed to the permanent magnet via a spacer A substantially bowl-shaped eccentric weight for shifting the rotation, a rotation shaft penetrating and fixing the eccentric weight and the permanent magnet, and the main body case and the lid for pivotally mounting the rotation shaft And a micro-generator comprising a bearing hole formed at the center of each.   A micro-generator that generates electric power by rotating or swinging, a substantially bottomed cylindrical main body case that has a stepped portion and closes an opening whose diameter has been expanded by a lid, and the main body case One or a plurality of permanent magnets that are fixed in an annular shape along the inner periphery of the bottom, a plurality of annularly assembled cores that are rotatably housed on the inner periphery of the permanent magnets, and a number of turns on each of the cores. Each of the attached coils, one or more light emitting elements connected to the end of each of the coils and disposed outside the main body case, and a spacer in the plurality of cores assembled in an annular shape A substantially bowl-shaped eccentric weight for shifting the fixed co-rotation, a rotation shaft penetrating and fixing the eccentric weight and a spacer to which the plurality of cores are fixed, and the rotation shaft is freely rotatable The main body case and the respective bearing holes formed in the center of the lid body are provided. Micro-generator to be.   A micro-generator that generates electric power by rotating, a substantially bottomed cylindrical main body case that has a stepped portion and expands the diameter of the opening with a lid, and a bottom inner periphery of the main body case A plurality of cores that are fixed in an annular shape along the respective cores, each coil that is fastened to each of the cores a number of times, and one or a plurality of cores that are connected to the end portions of the respective coils and disposed outside the main body case. A light emitting element, a disk-shaped permanent magnet rotatably accommodated on the inner periphery of the plurality of cores fixed in an annular shape, and the main body case or the lid to shift the corotation with the permanent magnet. A fixed substantially bowl-shaped eccentric weight, a rotary shaft in which the eccentric weight, the main body case, and the lid body are rotatable and the permanent magnet is inserted and fixed, and the rotary shaft is rotatably mounted. Each bearing hole formed at the center of each of the body case and the lid Micro-generator, wherein the door.   A micro-generator that generates electric power by rotating, a substantially bottomed cylindrical main body case that has a stepped portion and expands the diameter of the opening with a lid, and a bottom inner periphery of the main body case A permanent magnet or a plurality of permanent magnets fixed in a ring shape, a plurality of annularly assembled cores housed in an inner periphery of the permanent magnets, and a plurality of cores attached to the respective cores a number of times. The co-rotation of the coils, the single or plural light emitting elements connected to the ends of the respective coils and disposed outside the main body case, and the plural cores and permanent magnets assembled in an annular shape. For this purpose, a substantially bowl-shaped eccentric weight fixed to the main body case or the lid, a rotary shaft penetrating and fixed to a spacer fixing the plurality of cores, and the rotary shaft pivotally attached to the rotary shaft A main body case and respective bearing holes formed at the center of the lid; Micro-generator to butterflies.

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