JP2021019426A - Rotating magnet type power generation device - Google Patents

Abstract

To provide a power generation device that has a simple structure, generates power with light pushing force, and generates less sound.SOLUTION: A rotating magnet type power generation device (1) includes an air-core coil (3,4) wound in a tubular shape, a rotating shaft (5) that extends through an orbital portion of the air-core coil and can rotate, and magnets (7,8) placed on the air core of the air-core coil and fixed to the rotating shaft.SELECTED DRAWING: Figure 1

Description

The present invention relates to a rotating magnet type power generator having a simple structure.

There is known a power generation device that generates electricity by converting kinetic energy generated by operating an operation unit into electrical energy by an electromagnetic induction method. Such a power generation device is incorporated in a remote control device for remotely controlling an electronic device in, for example, a water supply facility such as a toilet room, a bathroom, or a kitchen.

The remote control device disclosed in Japanese Patent Application Laid-Open No. 2018-74537 (Patent Document 1) has an operation button for operating a device in response to a pressing operation and an electromagnetic induction is generated by being pressed in response to the pressing operation to generate electricity. It is provided with a power generation unit for performing the above operation, a control unit having an electronic component for generating a signal for remote control of the device, and a transmission mechanism that moves in response to a pressing operation of the operation button and presses the power generation unit. The transmission mechanism has a rotary cam that rotates in response to a push operation and a link that is pressed by the rotary operation of the rotary cam. When the force for pressing the operation button reaches a predetermined value, the rotary cam and the link The direction of movement is the same. The operating force associated with the pressing operation of the operation button is transmitted to the rotating shaft of the motor to rotate the rotating shaft, whereby AC power is generated from the motor.

The power generation device disclosed in Japanese Patent Application Laid-Open No. 2012-80702 (Patent Document 2) has a switch lever operated during power generation, a generator that generates an induced electromotive force by driving a driven portion, and an external force. A power generation spring that accumulates elastic force by being applied and drives the driven part by outputting the accumulated elastic force, and a slide member and pin that allow the output of the elastic force accumulated in the power generation spring. It has a wheel. The generator is configured to rotate a driven portion to rotate a cylindrical magnet inside the coil, thereby changing the magnetic flux penetrating the coil to generate an induced electromotive force.

JP-A-2018-74537 Japanese Unexamined Patent Publication No. 2012-80702

In the power generation devices disclosed in JP-A-2018-74537 (Patent Document 1) and JP-A-2012-80702 (Patent Document 2), the operating force of the operating member is applied to the rotation of the rotor arranged in the coil. The mechanism that converts it into motion is a little complicated, and the pushing force feels a little hard.

Further, in a power generation device having a complicated structure as described in JP-A-2018-74537 (Patent Document 1) and JP-A-2012-80702 (Patent Document 2), sound generation is unavoidable, for example. It is not very preferable as a power generation device installed in a toilet.

An object of the present invention is to provide a power generation device having a simple structure, generating power with a light pushing force, and generating less sound.

The rotary magnet type power generation device according to the present invention includes an air-core coil wound so as to orbit in a tubular shape, a rotating shaft extending through the orbiting portion of the air-core coil, and a rotatable rotating shaft and the air-core coil. It is provided with a magnet that is arranged in the air core and fixed to the rotating shaft.

In one embodiment, the magnet is a columnar magnet having a central axis orthogonal to the axis of rotation. The number of columnar magnets may be one or a plurality. In the embodiments exemplified herein, the columnar magnet includes a first columnar magnet arranged so as to sandwich the rotation axis and a second columnar magnet. These first and second columnar magnets are attracted and held by mutual attractive magnetic forces.

In another embodiment, the magnet is a spherical magnet. The number of spherical magnets is not limited, but in one embodiment, the spherical magnets include a first spherical magnet and a second spherical magnet arranged so as to sandwich the axis of rotation, and the first and second spherical magnets. Are attracted and held by each other's attractive magnetic forces.

The rotary magnet type power generation device may further include a rotary drive unit that rotationally drives the rotary shaft. In one embodiment, the rotary drive unit is attached to a portion of the rotary shaft located outside the air core coil, is arranged so as to mesh with a pinion gear that rotates integrally with the rotary shaft, and slides. It is equipped with a rack gear. In this embodiment, preferably, the rotating magnet type power generation device includes a case for accommodating the air core coil, the rotating shaft, the magnet, the pinion gear, and the rack gear. In this case, the rotary drive unit includes a push button whose one end is exposed to the outside of the case and the other end is in contact with the rack gear. Preferably, the rotary drive includes a spring that urges the rack gear in one direction.

There are no restrictions on the number or shape of air core coils. In one embodiment, the air core coil includes a first air core coil wound around a first bobbin and a second air core coil wound around a second bobbin. In this case, the end faces of the first bobbin and the second bobbin are in contact with each other with the rotation shaft sandwiched between them.

According to the present invention having the above configuration, it is possible to obtain a rotary magnet type power generation device having a simple structure.

It is a schematic diagram which shows the rotary magnet type power generation apparatus which concerns on one Embodiment of this invention. It is a schematic diagram which shows the rotary magnet type power generation apparatus which concerns on other embodiment of this invention. It is a schematic diagram which shows the rotary magnet type power generation apparatus which concerns on still another Embodiment of this invention.

The rotary magnet type power generation device according to the present invention can be used as, for example, a battery-less power generation device for a remote controller for a toilet, but it can also be used for other purposes.

The basic configuration of a rotating magnet type power generator is an air-core coil that is wound around a cylinder, a rotating shaft that extends through the orbiting part of the air-core coil, and an air-core coil. It is provided with a magnet arranged in the air core portion of the above and fixed to the rotating shaft.

FIG. 1 is an illustrated diagram of a rotating magnet type power generation device according to an embodiment of the present invention. The rotary magnet type power generation device 1 includes a case 2 for accommodating main components, a first air core coil 3 arranged in the case, a second air core coil 4, and first and second air core coils 3. The first and second rotating shafts 5 which extend through the orbital portions of, 4 and are arranged on the air cores of the first and second air core coils 3 and 4 and fixed to the rotating shaft 5. It includes columnar magnets 7 and 8.

The first air core coil 3 is wound on the outer peripheral surface of a cylindrical first bobbin 3a with flanges on both ends. The second air core coil 4 is wound on the outer peripheral surface of a cylindrical second bobbin 4a with flanges at both ends. The lower flange of the first bobbin 3a and the upper flange of the second bobbin 4a are provided so that their surfaces are in contact with each other.

The rotating shaft 5 extends so as to be sandwiched between the lower flange of the first bobbin 3a and the upper flange of the second bobbin 4a. In order to receive the rotating shaft 5, the lower flange of the first bobbin 3a is provided with a semicircular groove portion open downward, and the upper flange of the second bobbin 4a is provided with a semicircular groove portion open upward. The rotating shaft 5 is rotatably inserted through a through hole formed by two semicircular grooves facing each other in the vertical direction.

The first and second bobbins 3a and 4a are fixed to the case 2, and both ends of the rotating shaft 5 are rotatably supported by the case 2. The rotating shaft 5 extends through the circumferential portion of the air core coils 3 and 4. Here, the "circumferential portion of the coil" is a tubular portion in which the orbits of the air-core coils 3 and 4 wound around the first and second bobbins are located. When the first air core coil 3 and the second air core coil 4 are located apart from each other as in the embodiment shown in FIG. 1, the region located between the first air core coil 3 and the second air core coil 4 Is also included in the "circling part of the coil".

The shape of the bobbin around which the coil is wound is not limited to a cylindrical shape, and may be a square shape such as a quadrangle. Further, the number of air core coils is not limited to two, and may be one or three or more.

As the magnets arranged in the air core portions of the air core coils 3 and 4, two columnar magnets 7 and 8 are used in the illustrated embodiment. The two columnar magnets 7 and 8 are cylindrical magnets, and are arranged so as to sandwich the rotating shaft 5. The central axis A of the columnar magnets 7 and 8 is orthogonal to the rotation axis B of the rotation axis 5. A resin flat disk portion 6 surrounding the rotating shaft 5 is fixed to the rotating shaft 5 in the air core portion of the air core coils 3 and 4. The bottom surfaces of the two columnar magnets 7 and 8 are located on the flat disk portion 6, and the two columnar magnets 7 and 8 are attracted and held by mutual attractive magnetic forces. The positional relationship between the north and south poles of the magnet is as shown in FIG.

When the rotating shaft 5 is rotationally driven, an electric current flows through the air core coils 3 and 4 by electromagnetic induction to generate electricity. Although not shown, the air core coils 3 and 4 are connected to a current take-out unit that takes out the generated current. The current extraction unit includes, for example, a radio wave transmitter.

The rotary magnet type power generation device shown in FIG. 1 includes a rotary drive unit that rotationally drives the rotary shaft 5. The rotation drive unit includes a pinion gear 9 through which a rotation shaft 5 located outside the air core coils 3 and 4 is inserted, and a rack gear 11 which is arranged so as to mesh with the pinion gear 9 and slides. The pinion gear 9 may be fixed to the rotating shaft 5 and rotate integrally with the rotating shaft 5 in both the forward and reverse directions, or may be attached to the rotating shaft 5 via a one-way clutch. It may be. When the one-way clutch is used, the pinion gear 9 rotates integrally with the rotating shaft 5 in the forward rotation direction, but is free from the rotating shaft 5 in the reverse rotation direction.

The pinion gear 9 and the rack gear 11 are housed in the case 2. The rack gear 11 is provided so as to be slidable linearly with respect to the case 2, and one end thereof is exposed to the outside of the case 2 to form a push button 12. In the illustrated embodiment, the rack gear 11 and the push button 12 are integrally formed of a common member, but they may be formed of separate members.

A return spring 13 is arranged between the tip of the rack gear 11 and the case 2. Further, the spacer 10 is arranged at the portion of the rotating shaft 5 located between the pinion gear 9 and the first and second bobbins 3a and 4a. An adjusting spring 14 is arranged between the pinion gear 9 and the case 2, and the pinion gear 9 is always urged toward the spacer 10.

When the push button 12 is pushed in the direction of the arrow D in the figure, the rack gear 11 moves in the direction of the arrow D, and the pinion gear 9 rotates integrally with the rotating shaft 5 accordingly. Along with the rotation of the rotating shaft 5, the two columnar magnets 7 and 8 rotate around the rotating axis B, and an electric current flows through the air core coils 3 and 4 by electromagnetic induction to generate electricity.

When the pushing force on the push button 12 is released, the rack gear 11 moves in the direction of arrow E by the action of the return spring 13, and the push button 12 also returns to the original position. The pinion gear 9 also rotates in the reverse direction due to the return operation of the rack gear 11 in the reverse direction. If a one-way clutch is interposed between the pinion gear 9 and the rotating shaft 5, the rotation of the pinion gear 9 in the opposite direction is not transmitted to the rotating shaft 5. As a result, power is not generated when the push button is released.

In the illustrated embodiment, the rotary drive unit is composed of the pinion gear 9 and the rack gear 11, but other structures may be adopted. For example, the structure may be such that the rotating shaft 5 is directly rotated via a handle or the like.

The columnar magnet attached to the rotating shaft 5 is not limited to the cylindrical shape, and the cross-sectional shape may be square. Further, the number of columnar magnets may be one or three or more. Further, when two columnar magnets are used, the shapes and sizes of the two columnar magnets may be the same or different.

FIG. 2 is an illustrated diagram of a rotating magnet type power generation device according to another embodiment of the present invention. The same reference numbers are given to the same elements as those in the embodiment shown in FIG.

In the embodiment shown in FIG. 2, two spherical magnets 22 and 23 having the same size are provided as magnets fixed to the rotating shaft 5 in the air core portion of the air core coils 3 and 4. A resin-made spherical receiving portion 21 is provided on the rotating shaft 5, and the two spherical magnets 22 and 23 are arranged so as to sandwich the spherical receiving portion 21, and are attracted and held by mutual attractive magnetic forces. The line A connecting the centers of the two spherical magnets is orthogonal to the rotation axis B of the rotation axis 5.

In the embodiment shown in FIG. 3, two spherical magnets 24 and 25 having different sizes are provided as magnets fixed to the rotating shaft 5 in the air core portion of the air core coils 3 and 4. A resin spherical receiving portion 21 is provided on the rotating shaft 5, and two spherical magnets 24 and 25 having different sizes are arranged so as to sandwich the spherical receiving portion 21, and are attracted and held by mutual attractive magnetic forces. ing. Also in this embodiment, the line A connecting the centers of the two spherical magnets 24 and 25 is orthogonal to the rotation axis B of the rotation axis 5.

In the embodiment shown in FIGS. 2 and 3, two spherical magnets are provided, but the number of spherical magnets is not limited.

Although the embodiments of the present invention have been described with reference to the drawings, the present invention is not limited to the illustrated embodiments, and various modifications and additions can be made within the same range or the same range as the present invention. Is.

The present invention can be advantageously used as a rotating magnet type power generator having a simple structure.

1 Rotating magnet type power generator, 2 case, 3 1st air core coil, 3a 1st bobbin, 4 2nd air core coil, 4a 2nd bobbin, 5 rotating shaft, 6 flat disk part, 7 1st columnar magnet, 8 2nd columnar magnet, 9 pinion gear, 10 spacer, 11 rack gear, 12 push button, 13 return spring, 14 adjustment spring, 20 rotating magnet type generator, 21 spherical magnet, 22,23 spherical magnet, 30 rotating magnet type rotating device , 24,25 Spherical magnet, A center axis, B rotation axis, D push direction, E return direction.

Claims (9)

An air-core coil wound in a tubular shape and
A rotating shaft that extends through the peripheral portion of the air core coil and is rotatable,
A rotating magnet type power generation device including a magnet arranged in an air core portion of the air core coil and fixed to the rotating shaft. The rotary magnet type power generation device according to claim 1, wherein the magnet is a columnar magnet having a central axis orthogonal to the rotary axis. The columnar magnet includes a first columnar magnet arranged so as to sandwich the rotation axis and a second columnar magnet.
The rotary magnet type power generation device according to claim 2, wherein the first and second columnar magnets are attracted and held by mutual attractive magnetic forces. The rotary magnet type power generation device according to claim 1, wherein the magnet is a spherical magnet. The spherical magnet includes a first spherical magnet and a second spherical magnet arranged so as to sandwich the rotation axis.
The rotary magnet type power generation device according to claim 4, wherein the first and second spherical magnets are attracted and held by mutual attractive magnetic forces. A rotary drive unit for rotationally driving the rotary shaft is further provided.
The rotation drive unit is attached to a portion of the rotation shaft located outside the air core coil, and is arranged so as to mesh with a pinion gear that rotates integrally with the rotation shaft and a rack gear that slides and moves. The rotary magnet type power generation device according to any one of claims 1 to 5. A case including the air core coil, the rotating shaft, the magnet, the pinion gear, and the rack gear is provided.
The rotary magnet type power generation device according to claim 6, wherein the rotary drive unit includes a push button having one end exposed to the outside of the case and the other end abutting against the rack gear. The rotary magnet type power generation device according to claim 6 or 7, wherein the rotary drive unit includes a spring that urges the rack gear in one direction. The air core coil includes a first air core coil wound around a first bobbin and a second air core coil wound around a second bobbin.
The rotary magnet type power generation device according to any one of claims 1 to 8, wherein the first bobbin and the second bobbin are in contact with each other with their rotating shafts sandwiched between them.

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