JP6647672B1 - Rotary magnet power generator - Google Patents

Abstract

Provided is a power generation device that has a simple structure, generates power by a light pressing force, and generates less noise. A rotary magnet type power generator (1) is provided with an air-core coil (3, 4) wound around a cylindrical shape, and extends through a circling portion of the air-core coil to rotate freely. A shaft (5) and magnets (7, 8) arranged on the air core of the air core coil and fixed to the rotating shaft. [Selection diagram] Fig. 1

Description

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

  2. Description of the Related Art There is known a power generation device that converts kinetic energy generated by operation of an operation unit into electric energy by an electromagnetic induction method and generates power. Such a power generation device is incorporated in a remote control device that remotely controls an electronic device, for example, in a plumbing facility such as a toilet room, a bathroom, and a kitchen.

  A remote control device disclosed in Japanese Patent Application Laid-Open No. 2018-74537 (Patent Literature 1) generates an operation button for operating a device in response to a pressing operation, and generates electromagnetic induction by being pressed in response to the pressing operation. And a control unit having an electronic component that generates a signal for remotely controlling the device, and a transmission mechanism that moves in response to a pressing operation of the operation button and presses the power generating unit. The transmission mechanism has a rotating cam that rotates in accordance with the pressing operation, and a link that is pressed by the rotating operation of the rotating cam. When the force that presses the operation button reaches a predetermined value, the transmission mechanism is connected to the rotating cam and the link. The moving directions are the same. An 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, thereby generating AC power from the motor.

  The power generating 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 induced electromotive force by driving a driven part, and an external force. A power generation spring that drives a driven part by accumulating an elastic force by being applied and outputting the accumulated elastic force, a slide member and a pin that allow the output of the elastic force accumulated in the power generation spring And wheels. The generator is configured to rotate a driven portion to rotate a cylindrical magnet inside the coil, thereby changing a magnetic flux penetrating the coil to generate an induced electromotive force.

JP 2018-74537 A JP 2012-80702 A

  In the power generators disclosed in JP-A-2018-74537 (Patent Literature 1) and JP-A-2012-80702 (Patent Literature 2), the operating force of the operating member is rotated by the rotation of the rotor disposed in the coil. The mechanism for converting into motion is somewhat complicated, and the pressing force feels somewhat hard.

  Further, in a power generator having a complicated configuration as described in JP-A-2018-74537 (Patent Document 1) and JP-A-2012-80702 (Patent Document 2), generation of sound is inevitable. It is not very desirable as a power generator installed in a toilet.

  An object of the present invention is to provide a power generation device which has a simple structure, generates power by a light pressing force, and generates less noise.

  A rotary magnet type power generator according to the present invention comprises an air core coil wound around a cylindrical shape, a rotatable rotating shaft extending through the orbital portion of the air core coil, and an air core coil. A magnet arranged on the air core and fixed to the rotating shaft.

  In one embodiment, the magnet is a columnar magnet having a central axis perpendicular to the rotation axis. The number of columnar magnets may be one or more. In the embodiment exemplarily described in this specification, the columnar magnet includes a first columnar magnet and a second columnar magnet arranged so as to sandwich the rotation axis. These first and second columnar magnets are attracted and held by mutual attracting magnetic force.

  In another embodiment, the magnet is a spherical magnet. Although the number of spherical magnets is not limited, in one embodiment, the spherical magnet includes a first spherical magnet and a second spherical magnet arranged so as to sandwich the rotation axis, and the first and second spherical magnets Are attracted and held by mutual attracting magnetic force.

  The rotating magnet power generation device may further include a rotation driving unit that drives the rotation shaft to rotate. In one embodiment, 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 the pinion gear that rotates integrally with the rotation shaft, and slides. A rack gear. In this embodiment, preferably, the rotary magnet type power generator includes a case that houses the air core coil, the rotation shaft, the magnet, the pinion gear, and the rack gear. In this case, the rotation drive unit includes a push button whose one end is exposed outside the case and whose other end is in contact with the rack gear. Preferably, the rotation drive unit includes a spring that biases the rack gear in one direction.

  There is no restriction on the number and shape of the air core coils. In one embodiment, the air core coil includes a first air core coil wound on a first bobbin and a second air core coil wound on a second bobbin. In this case, the end surfaces of the first bobbin and the second bobbin abut each other with the rotation shaft interposed therebetween.

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

1 is an illustrative view showing a rotary magnet type power generation device according to an embodiment of the present invention. It is an illustrative view showing a rotating magnet type power generator according to another embodiment of the present invention. FIG. 10 is an illustrative view showing a rotary magnet power generator according to still another embodiment of the present invention.

  The rotating magnet power generator according to the present invention can be used as a battery-less power generator for a remote controller for a toilet, for example, but can also be used for other purposes.

  The rotating magnet type power generating device is basically composed of an air core coil wound around a cylindrical shape, a rotatable rotating shaft extending through the orbital portion of the air core coil, and an air core coil. And a magnet fixed to the rotating shaft.

  FIG. 1 is an illustrative view of a rotary magnet type power generator according to one embodiment of the present invention. The rotating magnet power generator 1 includes a case 2 for accommodating main components, a first air-core coil 3 disposed in the case, a second air-core coil 4, and first and second air-core coils 3. , 4 extending through the orbital portion and rotatable rotary shaft 5, and first and second shafts disposed on the air core portions of the first and second air core coils 3, 4 and fixed to the rotary shaft 5. And columnar magnets 7 and 8.

  The first air core coil 3 is wound on the outer peripheral surface of a cylindrical first bobbin 3a having flanges at both ends. The second air core coil 4 is wound on the outer peripheral surface of a cylindrical second bobbin 4a having flanges at both ends. The lower flange of the first bobbin 3a and the upper flange of the second bobbin 4a are provided such that their surfaces abut.

  The rotating shaft 5 extends 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 opening downward, and the upper flange of the second bobbin 4a is provided with a semicircular groove opening upward. The rotating shaft 5 is rotatably inserted through a through hole formed by two semicircular grooves facing vertically.

  The first and second bobbins 3a, 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 orbital portions of the air-core coils 3 and 4. Here, the “circular portion of the coil” is a cylindrical portion where the circular orbits of the air-core coils 3 and 4 wound on 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. Are also included in the “circular portion of the coil”.

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

  In the illustrated embodiment, two columnar magnets 7 and 8 are used as the magnets arranged in the air core portions of the air core coils 3 and 4. The two columnar magnets 7 and 8 are columnar magnets, and are arranged so as to sandwich the rotation shaft 5. The center axis A of the columnar magnets 7 and 8 is orthogonal to the rotation axis B of the rotation shaft 5. A flat disk portion 6 made of resin and surrounding the rotary shaft 5 in the air core portions of the air core coils 3 and 4 is fixed to the rotary shaft 5. 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 attracting magnetic force. The positional relationship between the north pole and the south pole of the magnet is as shown in FIG.

  When the rotating shaft 5 is driven to rotate, a current flows through the air-core coils 3 and 4 by electromagnetic induction to generate power. Although not shown, a current extracting unit for extracting the generated current is connected to the air-core coils 3 and 4. The current extracting unit includes, for example, a radio wave transmitter.

  The rotary magnet type power generator shown in FIG. 1 includes a rotation drive unit that drives the rotation shaft 5 to rotate. The rotation drive unit includes a pinion gear 9 through which the rotation shaft 5 located outside the air core coils 3 and 4 is inserted, and a rack gear 11 arranged to mesh with the pinion gear 9 and slidably move. The pinion gear 9 may be fixed to the rotating shaft 5 and rotate integrally with the rotating shaft 5 in both the forward rotation direction and the reverse rotation direction, or may be attached to the rotation shaft 5 via a one-way clutch. It may be. When the one-way clutch is interposed, the pinion gear 9 rotates integrally with the rotary shaft 5 in the normal rotation direction, but is free from the rotation 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 linearly slidable with respect to the case 2, and one end of the rack gear 11 is exposed outside 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 by a common member, but they may be formed by separate members.

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

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

  When the pushing force on the push button 12 is released, the rack gear 11 moves in the direction of the 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 by 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. Thereby, when the push button is released, power is not generated.

  In the illustrated embodiment, the rotation drive unit is constituted by the pinion gear 9 and the rack gear 11, but other structures can be adopted. For example, a structure in which the rotating shaft 5 is directly rotated via a handle or the like may be used.

  The columnar magnet attached to the rotating shaft 5 is not limited to a columnar shape, and may have a square cross section. The number of columnar magnets may be one, or three or more. Further, when two columnar magnets are used, the shape and size of the two columnar magnets may be the same or different.

  FIG. 2 is an illustrative view of a rotary magnet type power generator according to another embodiment of the present invention. The same elements as those in the embodiment shown in FIG. 1 are denoted by the same reference numerals.

  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 portions of the air core coils 3 and 4. The rotating shaft 5 is provided with a sphere receiving portion 21 made of resin, and the two spherical magnets 22 and 23 are arranged so as to sandwich the sphere receiving portion 21 and are attracted and held by mutual attracting magnetic force. The line A connecting the centers of the two spherical magnets is orthogonal to the rotation axis B of the rotation shaft 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 portions of the air core coils 3 and 4. The rotating shaft 5 is provided with a spherical receiving portion 21 made of resin. Two spherical magnets 24 and 25 of different sizes are arranged so as to sandwich the spherical receiving portion 21 and are attracted and held by mutual attracting magnetic force. 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 shaft 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 embodiment of the present invention has been described with reference to the drawings, the present invention is not limited to the illustrated embodiment, and various changes and additions can be made within the same range or an equivalent range as the present invention. It is.

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

  REFERENCE SIGNS LIST 1 rotating magnet power generator, 2 case, 3 first air core coil, 3a first bobbin, 4 second air core coil, 4a second bobbin, 5 rotating shaft, 6 flat disk, 7 first 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 power generator, 21 sphere receiving part, 22, 23 spherical magnet, 30 rotating magnet rotating device , 24,25 spherical magnet, A center axis, B rotation axis, D pushing direction, E return direction.

Claims (9)

An air-core coil wound around a cylinder,
A circulating portion of the air-core coil, that is, a rotating shaft that extends through the cylindrical portion so as to intersect with the cylindrical portion where the circulating track of the air-core coil is located , and is rotatable;
The air core is disposed air-core portion of the coil, and a magnet the fixed to the rotating shaft passing through the cylindrical shaped portion of the air-core coil, rotary magnet type generator.   The rotating magnet power generator according to claim 1, wherein the magnet is a columnar magnet having a central axis orthogonal to the rotation axis. The columnar magnet includes a first columnar magnet and a second columnar magnet, which are located on a central axis orthogonal to the rotation axis and are arranged so as to sandwich the rotation axis, in an air core portion of the air core coil. Including
The rotary magnet power generator according to claim 2, wherein the first and second columnar magnets are attracted and held by mutual attracting magnetic force. The rotary magnet type power generator according to claim 1, wherein the magnet is a spherical magnet located in an air core portion of the air core coil . The spherical magnet is located on a central axis orthogonal to the rotation axis in the air core portion of the air core coil, and includes a first spherical magnet and a second spherical magnet arranged to sandwich the rotation axis. Including
The rotary magnet power generator according to claim 4, wherein the first and second spherical magnets are attracted and held by mutual attracting magnetic force. The apparatus further includes a rotation driving unit configured to rotationally drive the rotation shaft,
The rotation drive unit is attached to a portion of the rotation shaft that is located outside the air core coil, and a pinion gear that rotates integrally with the rotation shaft, and a rack gear that is arranged to mesh with the pinion gear and slides. The rotating magnet power generator according to any one of claims 1 to 5, comprising: A case that houses the air core coil, the rotation shaft, the magnet, the pinion gear, and the rack gear;
The rotary magnet type power generator according to claim 6, wherein the rotation drive unit includes a push button having one end exposed outside the case and the other end contacting the rack gear.   The rotary magnet power generator according to claim 6, wherein the rotation drive unit includes a spring that biases 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 generator according to any one of claims 1 to 8, wherein the first bobbin and the second bobbin abut on each other with the rotating shaft interposed therebetween.

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