JP2005184992A - Oscillating generator and portable communication device with the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an oscillating generator capable of concurrently implementing miniaturization and high generated voltage. <P>SOLUTION: This oscillating generator includes a combination of an electromagnetic induction coil inserted with an iron core into the axial center and a solid or hollow bar magnet whose cross section is circular or polygonal. The bar magnet has N polarity and S polarity on both ends and, when the outer periphery of the coil iron core in the lengthwise direction is magnetically attracted to the outer periphery of the bar magnet, the outer peripheries if the coil and the magnet are attracted by each other, and either one of the coil or the magnet is directed downward and is magnetically hung by the other. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

The present invention relates to a vibration generator, and more particularly, to a generator structure capable of generating power by vibration or swinging when a person walks or vibration of an automobile or a railway vehicle, and a portable communication device using the generator structure. It is concerned.

In recent years, the spread of portable electronic devices has been remarkable, and in particular, the spread of portable communication devices has been remarkable. A small battery that can be charged is used as the power source of these portable electronic devices, but the problem is that the capacity of these batteries is so small that frequent charging work is required. Therefore, the development of a portable generator that can be easily charged anywhere is awaited.
Patent Document 1 discloses a generator that combines an electromagnetic induction coil and a permanent magnet, and uses a vibration when a person walks to roll the permanent magnet to generate power.
Patent Documents 2 and 3 disclose a generator that generates electric power by swinging a permanent magnet by wave vibration.
Patent Document 4 discloses a power generator that generates electricity by loading a car or the like and vibrating a permanent magnet using the vibration.
Although Patent Document 1 can be downsized, there is a drawback that the generated voltage is extremely small.
Patent Documents 2 to 4 have drawbacks that the device is large and difficult to miniaturize, and the generated voltage is small.
Patent Document 5 discloses a power generator that generates power by suspending a bar magnet with a spring and vibrating the bar magnet up and down using vibration during walking. This invention is related to the inventions of the present inventors, but is heavy and has limitations in miniaturization, and has a drawback that the generated power per unit weight is also small.
In any case, a conventional portable vibration generator has not been developed as a generator that can simultaneously solve the problems of both miniaturization and generation voltage.

JP 10-14200 Shokai 58-67980 Registered Utility Model Publication No. 3015921 4-10583 JP2002-374661

The present invention has been made in view of such problems, and an object thereof is to provide a vibration generator having a new structure capable of simultaneously solving the problems of both miniaturization and generated voltage, and a new portable communication device using the same. It is to be.

The inventor conducted intensive studies on the above problems and obtained the following knowledge.
That is,
To reduce the size, a rolling generator that rolls a magnet, and if the electromagnetic induction coil is placed either above or below the rolling magnet, a thin plate generator can be obtained.
To increase the power generation voltage, insert an iron core into the coil axis. At this time, it is necessary to prevent the magnet from being attracted to the iron core and falling into a state incapable of rolling. For this purpose, the magnet is made of bar magnets having N and S at both ends, and the iron core and the magnet end surface. Has found that it is indispensable to place the coil in a position that never faces.
The present invention has been made on the basis of the above findings and has the following configuration.
That is,
It consists of a combination of an electromagnetic induction coil with an iron core inserted in the shaft core and a solid or hollow bar magnet with a circular or polygonal cross section. The bar magnet has N and S polarities at both ends, and the coil iron core When the outer circumferential surface of the magnet is magnetically attracted to the outer circumferential surface of the bar magnet, the outer circumferential surfaces of the coil and the magnet are attracted and attracted to each other, and either the coil or the magnet is placed downward. A vibration generator characterized by comprising a structure magnetically suspended from the other.
The vibration generator according to (1) above, wherein the other one is arranged separately below the magnetically suspended one.
The vibration generator according to (1) or (2) above, wherein a nonmagnetic partition wall is inserted between the coil and the attracting surface of the magnet outer peripheral surface.
A combination of a permanent magnet that freely rolls on a concave curved surface of a rolling plate made of a non-magnetic material, and an electromagnetic induction coil that is disposed at least one of the upper and lower positions of the permanent magnet. The direction of the magnetic field (direction of the lines of magnetic force) is perpendicular to the rolling direction, and the coil is arranged in a direction in which the direction of the central axis does not intersect with the direction of the central axis of the magnet, A vibration generator comprising a structure in which an iron core is inserted in the same direction as the direction of the central axis of the coil.
The vibration generator according to (4) above, wherein the central axis of the permanent magnet and the iron core are arranged in the same direction.
(1) to (5), wherein the coil has a structure in which sheet-like coils are laminated, and the iron core has a structure in which a foil-like iron core is sandwiched between sheet-like coils. The vibration generator in any one of.
The vibration generator according to any one of (1) to (6) above, wherein a plurality of the vibration generators are provided side by side.
8. The vibration generator according to any one of (1) to (7), wherein the induction current of each coil is converted into a direct current, and then the coils are connected in series or in parallel with their polarities matched.
A communication device, wherein the induced electromotive force of the generator is converted into direct current, then stored in a battery or a capacitor, and used as a power source.
(10) The communication device according to (9), wherein the communication device is a mobile phone.
(11) The communication device according to (9), wherein the communication device is a self-transmitting IC tag.
(12) The communication device according to (9), wherein the communication device is a transmitter of a GPS terminal.
(13) The communication device according to (12), wherein the transmitter is provided with a security alarm function.

  The present invention has an extremely simple structure, is light and thin, is convenient for carrying, and greatly contributes to the portability of electronic devices and communication devices and the elimination of power supply. It is also possible to obtain a large voltage by combining a plurality of them and placing them on a car. Moreover, it can be loaded on a car, a railroad, or a ship and can generate electric power by utilizing the vibrations of these transportation facilities, so that energy can be used effectively. It can also be used as a power source for transmitters of IC tags and GPS terminals.

The operation and function of the present invention will be described with reference to the drawings.
1 to 7 are diagrams illustrating the basic structure of the present invention.
8 to 9 are explanatory views when two upper and lower units are arranged, and FIGS. 10 to 11 are explanatory diagrams when two sets are arranged left and right.
FIG. 12 is an explanatory diagram when the magnet is stuck to the iron core and cannot be rolled by the rolling generator.
FIG. 13 is an explanatory view of the structure of the embodiment, FIGS. 14 and 15 are explanatory views of the structure of the coil, and FIG. 16 is a schematic view when the generator of the present invention is connected to the GPS terminal.
In the present invention, the position where the iron core and the magnet pole face never face each other means an arrangement where the iron core and the N and S faces of the magnet do not face each other as shown in FIG.
The basic structure of the present invention (FIGS. 1 to 7) is in a positional relationship in which the iron core and the magnet pole face never face each other. In particular, FIGS. 1, 2, 6 and 7 use the magnetic attraction force of the magnet to attract the magnet to the coil, but not to the N and S pole faces, but to the outer periphery of the side surface in the length direction. Also, it is adsorbed by utilizing the existence of adsorption power. This is the greatest feature of the present invention.

1, 2, 6, and 7 illustrate the structure of a rolling generator having a structure in which the outer peripheral surfaces of a coil and a magnet are attracted and attracted to each other and the magnet is magnetically suspended under the coil. FIG.
Fig. 1 shows the magnet outer peripheral surface directly attracted, attracted and attracted to the coil outer peripheral surface. Fig. 2 shows a nonmagnetic partition wall inserted between the coil and magnet attracting surface. It is suspended.
An iron core is inserted in the coil shaft core.
The magnet is a bar magnet with N and S poles at the end faces. The outer peripheral surface in the length direction of the iron core is attracted to the outer peripheral surface in the length direction of the magnet, and is apparently stuck with a magnetic force with the coil interposed therebetween as shown in the figure.
Since the magnet and coil are not mechanically fixed, the magnet can roll freely.
In FIG. 1, the magnet can freely roll on the outer peripheral surface of the coil.
In FIG. 2, the surface of the nonmagnetic partition wall can be freely rolled.
When vibration is applied from the outside, the magnet rolls to the left and right as shown in the figure, and an electromotive force is induced in the coil because the magnetic field lines crossing the coil change.

Either the coil or magnet can be on top. In the figure, the magnet is suspended from the coil below, but the coil may be suspended from the magnet below.

The partition may or may not be present. When the rolling surface of the coil winding is worn out over a long period of use, the partition wall is effective in terms of preventing the wear on the winding surface. The partition wall is not limited to a flat or curved shape.

The cases of FIGS. 6 and 7 are also included in the scope of the present invention, but the generated voltage is smaller than the structure of FIGS. A large space is required. The structure shown in FIGS. 1 and 2 is most preferable in order to maximize the generated voltage and reduce the size.

1, 2, 6 and 7 show a structure in which a magnet is suspended by a magnetic attraction force. As shown in FIG. 3, a shaft is attached to the end face of the bar magnet from the center, and this shaft is non-magnetic. It may be a structure in which it is suspended from the bearing of the shaft so as to be rotatable. With the vibration applied from the outside, the magnet rotates left and right around the bearing, and an electromotive force is induced in the coil.

As shown in FIG. 4, a structure may be employed in which a coil is arranged on the rolling plate made of a non-magnetic material, on the lower side, or on the upper and lower sides, and the magnet rolls on the concave curved surface of the rolling plate. At this time, the direction of the central axis of the magnet (the direction of the lines of magnetic force) is perpendicular to the rolling direction. The direction of the coil must be arranged so that the direction of the central axis does not intersect the direction of the central axis of the magnet, especially when the direction of the central axis of the coil and the direction of the central axis of the magnet are arranged in the same direction. The induced electromotive force is maximized. That is, since the iron core is inserted in the same direction as the central axis of the coil, the induced electromotive force becomes maximum when the central axis of the magnet and the iron core is set in the same direction. In this case, by inserting the iron core into the coil, the induced electromotive force is increased by about 2 to 3 times compared to the case where the iron core is not inserted.

The induced electromotive force also changes depending on the radius of curvature of the bottom of the concave curved surface. The radius of curvature of the bottom of the concave curved surface that maximizes the induced electromotive force matches the rolling cycle of the magnet with the human walking cycle or the vibration cycle of the loaded vehicle. It is time.

In order to prevent the magnet from deviating from the concave surface during rolling, it is effective to attach two horizontal plates so as to sandwich the concave surface.

The shape of the surface on which the permanent magnet rolls is not limited to the concave curved surface, because the permanent magnet may roll to the left and right by vibration. Of course, a simple concave shape or V-shape may be used.

One to several coils may be arranged on the top, bottom, one side, or both top and bottom of the magnet.

Instead of rolling the permanent magnet, the pendulum may be moved between the coil and the iron core as shown in FIG.

In order to increase the generated voltage, it is desirable to arrange a plurality of coils.
8 and 9 are explanatory views when two coils are vertically arranged.
In FIG. 8, a coil is further arranged under the permanent magnet having the structure of FIG. 2, and substantially the same electromotive force is induced in the lower coil. Therefore, when connected in series, an electromotive force of about twice is obtained.

FIG. 9 shows a further arrangement of coils on the rolling magnet having the structure of FIG. Almost the same electromotive force is induced in the upper and lower coils.

FIGS. 10 and 11 are explanatory views when two coils are arranged on the left and right.
As shown in FIG. 10, the adjacent poles are arranged to be the same pole. At this time, when the distance between the adjacent magnets is short, the same poles repel each other and reverse, and the N and S combination stick together, resulting in the inability to generate power. In order to prevent this, a shaft is attached to the center of the left and right magnets as in the structure of FIG. 11, and this is inserted into the connecting plate so as to be rotatable and restrained to prevent inversion. Since each magnet can freely rotate around its axis, when vibration is applied from the outside, the magnet swings and an electromotive force is induced in the coil.

In the permanent magnet used in the present invention, the outer surface rolls in all cases except for the case of the pendulum structure shown in FIG. Therefore, a cross-sectional shape that is easy to roll is preferable. A circular cross section or a polygonal cross section close to a circle is preferable. The cross section may be solid or hollow.
The magnet can be of any manufacturing method such as a cast magnet, a sintered magnet, or a magnet in which permanent magnet particles are hardened with plastic. Any material can be used.

Since the voltage induced by electromagnetic induction is proportional to the number of turns of the coil, the coil windings of the present invention should be integrated without any gaps. In addition, since reverse currents are induced in the upper and lower coils and adjacent coils on the same side, the adjacent coils are connected so as not to cancel the current.
The coil used in the present invention preferably has a structure in which an iron core can be inserted into the central portion described in FIGS. Or the structure which laminated | stacked the sheet-like coil described in FIG. 15 may be sufficient. When using a sheet-like coil, it is preferable that the iron core is also made into a thin foil shape, and the iron core foil is sandwiched between the sheet coils and laminated.

  For the iron core, high magnetic permeability materials usually used for this kind of application such as electromagnetic soft iron, silicon steel plate, permalloy, sendust, Fe-Al alloy, amorphous alloy, soft magnetic ferrite, etc. can be suitably used.

  When the vibration source of the present invention cannot always obtain a constant vibration, for example, when a constant vibration is not obtained, such as when a person walks, or when loaded in a vehicle that is not always used, power is generated. It is preferable to use the electric power once charged in a battery or a capacitor. Since an alternating current is induced in the coil, a rectifier is connected to the final terminal of the coil to convert it into direct current, or if necessary, a constant voltage is further set by a regulator (constant voltage device) to charge the battery and capacitor.

When increasing the generated voltage, DC conversion is performed for one carrier, the polarity is matched, and the voltage is increased by connecting in series.

  A plurality of generators may be provided side by side when there is insufficient power with only one generator. It can be installed on both the top, bottom, left, and right, but in the case of left and right, if they are too close, rolling magnets may stick together and become inoperable, so top and bottom are best.

  The present invention may be used directly as a power source for portable or vehicle-mounted electronic devices, may be stored in a battery or a capacitor (capacitor), or may be used for both direct power supply and charging. You may make it available simultaneously.

Communication devices to which the present invention can be applied can be applied to all portable communication devices that require a power source.
It can be used as a power source for mobile phones, GPS (Global Positioning System) terminal transmitters, IC tags that can be self-transmitted, and as a power source for various other portable receiving and transmitting devices. FIG. 16 is a schematic diagram showing an example in which a radio wave is transmitted from an IC tag of a GPS terminal to an artificial satellite (positioning satellite) to transmit the current position of the individual.

  Self-sending GPS terminals can be used as security goods with a security alarm device. In other words, when a crime is encountered, an alarm is sounded and the crime is reported to the surroundings, and it is unsuccessfully taken away. Demonstrate.

  The generator of the present invention utilizes vibrations and swings when walking, or vibrations and swings generated on transportation such as cars, railway vehicles and ships, or vibrations and swings of bridges, roads and trees. Therefore, the present invention is not limited to a specific type of vibration source and oscillation source, and any device that generates at least oscillation oscillation can be applied to the present invention.

A generator having the structure shown in FIG. 2 was prototyped.
A coil (resistor 300Ω) made of 3400 turns of enamel-coated copper wire with a wire diameter of 0.08mm on a resin pipe with an outer diameter of 5mm, an inner diameter of 3mm, a thickness of 1mm, and a length of 10mm. It was mounted on the upper surface of the plate and fixed.
A soft iron core having a diameter of 3 mm and a length of 10 mm was inserted and fixed to the inner diameter of the coil.
When a cylindrical bar magnet (neodymium magnet: residual surface residual magnetic flux density of 1.3 T) magnetized with a radius of 12 mm, a length of 10 mm, and a length direction of N and S is laid sideways on the lower surface of the acrylic plate The length direction of the magnet and the cylindrical surface were attached to the lower surface of the acrylic plate and suspended. When the axis of the magnet was aligned in the same direction as the iron core of the coil and the acrylic plate was subjected to lateral vibration, the suspended cylindrical surface of the magnet rolled to the left and right, and an electromotive force was induced in the coil.
[Power generation test]
When this generator is vibrated with 5.7Hz and amplitude of 2mm, the average voltage is 0.1V and the average power is 33μ.
Met.

A generator with the structure shown in Fig. 13 was prototyped.
[Formation of rolling surface and coil insertion hole]
The inner surface of a 12 mm-thick acrylic plate was cut out as shown in FIG. 13, and a hole for fitting a coil and a surface on which a magnet was mounted were formed.
A cylindrical bar magnet (neodymium magnet: residual surface residual magnetic flux density 1.3T) magnetized with a radius of 12mm, a length of 10mm, and a length direction of N and S is placed on the rolling surface of the hollowed part, It was fixed with a plate.
Two coils were inserted into the upper and lower holes of the rolling surface and fixed. The coil was made of 3400 turns of enamel-coated copper wire with a diameter of 5 mm and a length of 10 mm, and a coil diameter of 3 mm and a length of 10 mm made of soft iron. An iron core was inserted and fixed. Two coils were connected in series so as not to cancel each other's induced electromotive force.
The bar magnet placed on the rolling surface was able to roll freely rolling from side to side. The radius of the rolled surface is 66.3 mm, and the length of the rolling surface is 100 mm.

[Power generation test]
When this generator is vibrated at 1.7Hz and amplitude 2.5mm (Peak to Peak), the average voltage is 0.08V.
The voltage was induced. This voltage was connected to a small step-up chopper, boosted, and rectified to direct current to charge the battery.
When the iron core was removed from the coil, the average generated voltage was 0.04V.
It was confirmed that the electromotive force was doubled by inserting the iron core.

  The present invention can be used as a power source for portable electronic devices and communication devices. In addition, it can be loaded on cars, railroads, and ships to generate power using the vibrations of these transportations, and energy can be used effectively. It makes a great contribution to energy saving.

FIG. 1 is an explanatory diagram of the basic structure of the present invention. FIG. 2 is an explanatory diagram of the basic structure of the present invention. FIG. 3 is an explanatory diagram of the basic structure of the present invention. FIG. 4 is an explanatory diagram of the basic structure of the present invention. FIG. 5 is an explanatory diagram of the basic structure of the present invention. FIG. 6 is an explanatory diagram of the basic structure of the present invention. FIG. 7 is an explanatory diagram of the basic structure of the present invention. FIG. 8 is an explanatory diagram when the upper and lower coils are arranged in series. FIG. 9 is an explanatory view when the upper and lower coils are arranged in series. FIG. 10 is an explanatory diagram when two coils and permanent magnets are arranged on the left and right. FIG. 11 is an explanatory diagram when two coils and permanent magnets are arranged on the left and right. FIG. 12 is an explanatory diagram when the magnet is stuck to the iron core and cannot be rolled in the rolling generator. FIG. 13 is an explanatory diagram of the structure of the example. FIG. 14 is an explanatory diagram of the structure of the coil and the iron core (flat structure). FIG. 15 is an explanatory diagram of a structure of a coil (sheet coil) and an iron core. FIG. 16 is a schematic diagram when the battery of the present invention is connected to a GPS terminal.

Claims (13)

It consists of a combination of an electromagnetic induction coil with an iron core inserted in the shaft core and a solid or hollow bar magnet with a circular or polygonal cross section. The bar magnet has N and S polarities at both ends, and the coil iron core When the outer circumferential surface of the magnet is magnetically attracted to the outer circumferential surface of the bar magnet, the outer circumferential surfaces of the coil and the magnet are attracted and attracted to each other, and either the coil or the magnet is placed downward. A vibration generator characterized by comprising a structure magnetically suspended from the other. 2. The vibration generator according to claim 1, wherein the other one is arranged separately from the magnetically suspended one. The vibration generator according to claim 1 or 2, wherein a non-magnetic partition wall is inserted between the coil and the adsorption surface of the magnet outer peripheral surface. A combination of a permanent magnet that freely rolls on a concave curved surface of a rolling plate made of a non-magnetic material, and an electromagnetic induction coil that is disposed at least one of the upper and lower positions of the permanent magnet. The direction of the magnetic field (direction of the lines of magnetic force) is perpendicular to the rolling direction, and the coil is arranged in a direction in which the direction of the central axis does not intersect with the direction of the central axis of the magnet, A vibration generator having a structure in which an iron core is inserted in the same direction as the direction of the central axis of the coil. 5. The vibration generator according to claim 4, wherein the central axis of the permanent magnet and the iron core are arranged in the same direction. 6. The coil according to claim 1, wherein the coil has a structure in which sheet-like coils are laminated, and the iron core has a structure in which a foil-like iron core is sandwiched between sheet-like coils. The vibration generator described in 1. The vibration generator according to any one of claims 1 to 6, wherein a plurality of the vibration generators are provided side by side. The vibration generator according to any one of claims 1 to 7, wherein the coils are connected in series or in parallel with their polarities matched after direct current conversion of the induced currents of the coils. A communication device, wherein the induced electromotive force of the generator is converted into direct current, then stored in a battery or a capacitor, and used as a power source. The communication device according to claim 9, wherein the communication device is a mobile phone. 10. The communication device according to claim 9, wherein the communication device is a self-transmitting IC tag. 10. The communication device according to claim 9, wherein the communication device is a transmitter of a GPS terminal. 13. The communication device according to claim 12, wherein the transmitter has a security alarm function.

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