JP2018191417A - Vibration dynamo power generator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vibration dynamo power generator capable of reducing torque to effectively generate electric power.SOLUTION: A vibration dynamo power generator (1) includes a current generator (2) and an external magnet (3). The current generator (2) includes: a non-magnetic cylindrical member (21); a coil disposed at an outer periphery of the cylindrical member; and a spherical member (5) accommodated inside of the cylindrical member in a state of capable of performing reciprocating motion along an extension direction of the cylindrical member. The external magnet (3) is disposed while being separated from the current generator (2) and moves relative to the cylindrical member (21). Thus, the spherical member (5) performs reciprocating motion in the cylindrical member (21) by a magnetic field of the external magnet (3).SELECTED DRAWING: Figure 4

Description

  The present invention relates to a vibration dynamo power generator attached to a bicycle having a rotating body.

  As a dynamo power generator for a bicycle, a power generator that generates power by rotating a plurality of magnets fixed to wheels, a so-called hub dynamo is the mainstream. In JP 2014-213657 A (Patent Document 1), a plurality of magnets are fixed to the front wheels, as in a hub dynamo power generation device, and the magnetic flux of the magnets passes through the core according to the rotation of the front wheels. By repeatedly generating a state that does not pass, an alternating magnetic flux is generated, and a current flows through the coil.

  Further, as disclosed in Japanese Patent Application Laid-Open No. 2017-28893 (Patent Document 2), a nonmagnetic cylindrical member, a coil disposed on the outer periphery of the cylindrical member, and the extending direction of the cylindrical member In the past, we have also proposed a technology for lighting equipment for bicycles by attaching a vibration dynamo device equipped with a vibration member housed inside a cylindrical member in a state that allows reciprocating motion to the crank of a bicycle pedal. Has been.

JP 2014-213657 A JP 2017-28893 A

  The vibration dynamo device as disclosed in Patent Document 2 has an advantage that the torque can be greatly reduced as compared with the hub dynamo power generation device. However, since the vibration member is vibrated only by the rotational force of the crank, the technology can generate power more efficiently. Was desired.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a vibration dynamo power generator capable of efficiently generating power while reducing torque.

  A vibration dynamo power generator according to an aspect of the present invention includes a current generator and an external magnet. The current generator is accommodated inside the cylindrical member in a state in which reciprocating motion is possible along the extending direction of the cylindrical member, a non-magnetic cylindrical member, a coil disposed on the outer periphery of the cylindrical member A spherical member formed. The external magnet is disposed away from the current generator and moves relative to the cylindrical member. Thereby, the spherical member reciprocates inside the cylindrical member by the magnetic field of the external magnet.

  Preferably, the cylindrical member is attached to a fixed body of the attachment object, and the external magnet is attached to a rotating body of the attachment object. It is desirable that the external magnet rotates on a second imaginary plane that is substantially parallel to the first imaginary plane that passes through the axis of the cylindrical member.

  More preferably, when viewed from a direction orthogonal to the second virtual plane, the rotation trajectory of the external magnet overlaps with the cylindrical member.

  Preferably, the spherical member is constituted by a magnet.

  The current generator further includes a pair of closing members provided at both ends of the cylindrical member. It is desirable that at least one of the pair of closing members has an elastic member that repels the spherical member to the other side by an elastic force.

  Inside the cylindrical member, two spherical members and a columnar member sandwiched between the two spherical members are accommodated, and the two spherical members and the columnar member are mutually connected by a magnetic attractive force. You may hold.

  In this case, it is desirable that the pair of closing members respectively provided at both ends of the cylindrical member have a magnet that repels the spherical member.

  According to the present invention, torque can be reduced and power can be generated efficiently.

It is a side view showing typically the state where the vibration dynamo power generator concerning an embodiment of the invention was attached to the bicycle. It is sectional drawing which shows typically the structure of the electric current generator in embodiment of this invention. In embodiment of this invention, it is a figure which shows typically an example of the positional relationship of the electric current generator and an external magnet at the time of seeing from the front side of a bicycle. In embodiment of this invention, it is a figure which shows typically an example of the positional relationship of the electric current generator and an external magnet at the time of seeing from the side surface side of a bicycle. In embodiment of this invention, it is a figure which shows typically the other example of the positional relationship of the electric current generator and an external magnet at the time of seeing from the side surface side of a bicycle. In embodiment of this invention, it is a figure which shows typically an example of the principle in which a spherical magnet reciprocates. In embodiment of this invention, it is a figure which shows typically the further another example of the positional relationship of the electric current generator and external magnet at the time of seeing from the side surface side of a bicycle. It is a side view which shows typically the state by which the vibration dynamo electric power generating apparatus which concerns on embodiment of this invention was attached to the other location of the bicycle. It is sectional drawing which shows typically the structural example of the lighting fixture in the modification 1 of embodiment of this invention. It is the equivalent circuit schematic of the lighting fixture in the modification 1 of embodiment of this invention. It is sectional drawing which shows typically the structural example of the electric current generator in the modification 3 of embodiment of this invention.

  Embodiments of the present invention will be described in detail with reference to the drawings. In the drawings, the same or corresponding parts are denoted by the same reference numerals and description thereof will not be repeated.

  In this embodiment, an example in which the vibration dynamo power generation device is used as an illumination device for a bicycle will be described.

(About schematic configuration)
With reference to FIG. 1, a schematic configuration of a vibration dynamo power generator 1 according to the present embodiment will be described. FIG. 1 is a side view schematically showing a state in which the vibration dynamo power generator 1 is attached to a bicycle 9. Bicycle 9 includes a body portion 91, a front wheel portion 92, a rear wheel portion 93, and a pedal portion 94. The body portion 91 is a fixed body that does not rotate during traveling. The front wheel portion 92, the rear wheel portion 93, and the pedal portion 94 are rotating bodies that rotate during traveling. The pedal portion 94 includes a pedal 95 for placing a passenger's foot and a crank 96 coupled to the pedal 95.

  As shown in FIG. 1, the vibration dynamo power generator 1 includes a current generator 2 fixed to a body portion 91 of a bicycle 9 and an external magnet 3 fixed to a pedal portion 94 of the bicycle 9. That is, the current generator 2 is attached to a fixed body that does not rotate during traveling, and the external magnet 3 is attached to a rotating body that rotates during traveling.

  The current generator 2 in the present embodiment is configured and arranged to generate a current by the rotation of the external magnet 3 accompanying the rotation of the pedal portion 94. The current generator 2 is connected to the light emitting unit 4 attached to the body unit 91 via the cable 40. Therefore, the light emitting unit 4 can emit light by the current generated by the current generator 2. Illumination by the light emitting unit 4 is used as intermittent illumination of the bicycle 9.

(Configuration example of current generator)
FIG. 2 is a cross-sectional view schematically showing the configuration of the current generator 2. The current generator 2 includes a cylindrical member 21, a vibrating member 22 housed inside the cylindrical member 21, a pair of elastic members 23 disposed at both ends of the cylindrical member 21, and the cylindrical member 21. And a coil 24 disposed on the outer periphery.

  The cylindrical member 21 has a hollow rod shape inside and is open at both ends. The cylindrical member 21 of the present embodiment extends in the left-right direction (the direction of arrow A) in FIG. In addition, the outer shape and inner shape (hollow shape) of the cylindrical member 21 are not specifically limited, A circular shape, a rectangular shape, etc. are mentioned by sectional view. The cylindrical member 21 of the present embodiment is formed of a cylindrical member, and the outer shape and the inner shape thereof are columnar when viewed in cross section.

  The cylindrical member 21 is made of a nonmagnetic material. The non-magnetic material is a material that is not a ferromagnetic material, and includes a paramagnetic material, a diamagnetic material, and an antiferromagnetic material. Examples of the non-magnetic material include metals such as aluminum and synthetic resins such as plastic.

  A coil 24 is wound around the outer periphery of the cylindrical member 21. For this reason, the cylindrical member 21 also serves as a bobbin for the coil 24. Although the coil 24 of this Embodiment is provided in a part of outer periphery of the cylindrical member 21, you may be provided in the perimeter of the cylindrical member 21, and the area | region where the outer periphery of the cylindrical member 21 was isolate | separated May be provided. The coil 24 is, for example, a solenoid coil.

  A vibration member 22 is provided inside the tubular member 21 in a state where reciprocation is possible along the axis C of the tubular member 21. Since the coil 24 is disposed on the outer periphery of the tubular member 21 of the tubular member 21, the vibrating member 22 reciprocates inside the coil 24.

  In the present embodiment, the vibration member 22 is configured by one spherical magnet 5. The spherical magnet 5 is a permanent magnet in which the N pole and the S pole are polarized and magnetized by hemispheres. The outer diameter of the spherical magnet 5 is slightly smaller than the inner diameter (hollow shape diameter) of the cylindrical member 21. The coil 24 generates a voltage by the reciprocating motion of the spherical magnet 5. That is, an alternating current is generated in the coil 24 because the magnetic flux lines generated from the spherical magnet 5 are orthogonal to the coil 24.

  One end of the coil 24 of the current generator 2 is connected to a rectifying unit (not shown), and the current rectified by the rectifying unit (not shown) is transmitted to the light emitting unit 4. Thereby, the light emission part 4 can be light-emitted with the electric current which the electric current generator 2 generate | occur | produced. Note that the alternating current generated in the coil 24 may be transmitted to the light emitting unit 4 without being rectified.

  The pair of elastic members 23 are closing members that close the openings at both ends of the cylindrical member 21. That is, the spherical magnet 5 that reciprocates is accommodated inside the cylindrical member 21 by the pair of elastic members 23. The elastic member 23 is a non-magnetic material such as rubber, and repels (repels) the spherical magnet 5 to the other side by its own elastic force. That is, the spherical magnet 5 that collides with one elastic member 23 is bounced back to the other elastic member 23 side by the elastic force of the elastic member 23.

  In addition, the whole of each closing member which closes the opening of the cylindrical member 21 does not need to be comprised with the elastic member, and the part which contacts at least the spherical magnet 5 should just be comprised with the elastic member.

  A pair of cap members 25 that cover the elastic member 23 are provided at both ends of the cylindrical member 21. The cap member 25 is made of a nonmagnetic material. Note that the current generator 2 may include a single housing (not shown) that forms the outline of the current generator 2 in place of the pair of cap members 25.

(About the positional relationship between the current generator and the external magnet)
In the present embodiment, when viewed from the side of the bicycle 9, the rotation locus of the external magnet 3 fixed to the pedal portion 94 overlaps the cylindrical member 21 of the current generator 2 fixed to the body portion 91. The current generator 2 and the external magnet 3 are positioned.

  An example of the positional relationship between the current generator 2 and the external magnet 3 will be described with reference to FIGS. 3 and 4. FIG. 3 is a diagram schematically showing an example of the positional relationship between the current generator 2 and the external magnet 3 when viewed from the front side of the bicycle 9, and FIG. 4 is a view when viewed from the side of the bicycle 9. It is a figure which shows typically an example of the positional relationship of this electric current generator 2 and the external magnet 3. FIG. 3 and 4, the coil 24 and the cap member 25 are not shown.

  The external magnet 3 is fixed to the inner surface of the crank 96 in the pedal portion 94. Therefore, the external magnet 3 rotates around the rotation axis P of the pedal portion 94. In FIG. 4, the rotation trajectory of the external magnet 3 is shown as an annular region M. The external magnet 3 may be provided not on the crank 96 but on the inner surface of the pedal 95.

  The external magnet 3 is, for example, a plate-like magnet, and is fixed so that the plate thickness direction coincides with the rotation axis P direction of the pedal portion 94. Thereby, even if the external magnet 3 is attached to the pedal portion 94, the projecting dimension to the inside of the external magnet 3 can be suppressed, so that the current generation in which the external magnet 3 is fixed to the body portion 91 of the bicycle 9 or the body portion 91 is generated. Does not interfere with device 2.

  The external magnet 3 is magnetized in the thickness direction. In FIG. 3, the boundary line between the magnetic poles of the external magnet 3 is indicated by a broken line. The material of the external magnet 3 is not particularly limited, but it is desirable to maintain a high magnetic force, for example, a ferrite magnet.

  The current generator 2 is attached to the body portion 91 so that the extending direction of the cylindrical member 21 (the axial direction of the cylindrical member 21) is substantially orthogonal to the rotation axis P of the pedal portion 94. That is, when a virtual surface passing through the axis C of the cylindrical member 21 (without intersecting), that is, a virtual surface (not shown) including the axis C of the cylindrical member 21 is defined as a “first virtual surface”, the external magnet 3 Rotates on a second virtual surface (not shown) substantially parallel to the first virtual surface.

  It is desirable that the current generator 2 is further fixed so as to be in a substantially horizontal state. Thereby, the influence of gravity applied to the spherical magnet 5 can be made substantially uniform in the cylindrical member 21. In this case, since the current generator 2 is arranged along the front-rear direction of the bicycle 9, the vibration direction of the spherical magnet 5 coincides with the front-rear direction of the bicycle 9. The “substantially horizontal state” includes not only a completely horizontal state but also a state slightly inclined with respect to a horizontal plane.

  As shown in FIG. 4, when viewed from the direction of the rotation axis P of the pedal portion 94 (that is, viewed from the direction orthogonal to the second imaginary plane), at least a part of the cylindrical member 21 of the current generator 2 is It is located in an annular region M as a rotation locus of the external magnet 3. Therefore, the external magnet 3 passes through the cylindrical member 21 of the current generator 2 by the rotation of the pedal portion 94.

  Since the current generator 2 is disposed at such a position, the spherical magnet 5 inside the cylindrical member 21 can be reciprocated by the magnetic field of the external magnet 3 when the bicycle 9 is traveling. That is, the spherical magnet 5 is rotated or moved along the axis C within the cylindrical member 21 by being attracted or repelled by the external magnet 3. Alternatively, the spherical magnet 5 rotates and moves along the axis C in the cylindrical member 21 by repetition of attraction and repulsion to the external magnet 3.

  As shown in FIG. 4, the cylindrical member 21 may be disposed across the perpendicular L passing through the rotation axis P of the pedal portion 94, and as shown in FIG. 5, so as not to straddle the perpendicular L. It may be arranged. In any case, the spherical magnet 5 rotates and moves in the cylindrical member 21 when the strength of the magnetic force received from the external magnet 3 is periodically changed when the bicycle 9 is traveling.

  An example of the principle that the spherical magnet 5 reciprocates will be described with reference to FIG. As shown in FIG. 6A, when the external magnet 3 approaches one side (for example, the left side of the paper) of the cylindrical member 21 of the current generating device 2, the spherical magnet 5 is attracted by the cylindrical member 21 by the attractive force. 21 is rotated to one side in the axial direction. As shown in FIG. 6B, when the spherical magnet 5 hits the left elastic member 23a, the elastic force of the elastic member 23a causes the spherical magnet 5 to bounce back toward the other end in the axial direction toward the right elastic member 23b. .

  Next, as shown in FIG. 6C, the spherical magnet 5 that rotates and moves to the other side in the axial direction hits the elastic member 23b at the right end. Also in this case, since the spherical magnet 5 is bounced back toward the leftmost elastic member 23a by the elastic force of the elastic member 23b, the spherical magnet 5 rotates again to one side in the axial direction. By repeating these steps, the spherical magnet 5 reciprocates along the axial direction inside the cylindrical member 21 while the bicycle 9 is traveling.

  As described above, as long as the spherical magnet 5 can be vigorously rotated and moved in one axial direction by at least the attractive force or the repulsive force, the spherical magnet 5 is moved by the elastic force of the elastic members 23 arranged at both ends of the cylindrical member 21. It can be reciprocated.

  When the elastic force of the elastic member 23 is used as in this embodiment, it is desirable that the axial length of the tubular member 21 is relatively short. The axial length of the cylindrical member 21 is, for example, not more than 10 times the outer diameter of the spherical magnet 5, and preferably not more than 6 times.

  In addition, when the cylindrical member 21 is arrange | positioned ranging over the perpendicular L which passes along the rotating shaft P of the pedal part 94, not only when the external magnet 3 approaches the cylindrical member 21, but the external magnet 3 is a cylinder. Even when passing through the shaped member 21 and away, the spherical magnet 5 still has an attractive force (see FIG. 4). In such a case, the reciprocating motion of the spherical magnet 5 can be effectively performed.

  4 and 5, the cylindrical member 21 is located at a position where the external magnet 3 sequentially passes through one end portion and the central portion in the axial direction of the cylindrical member 21 when viewed from the rotation axis P direction of the pedal portion 94. An example of placement has been shown, but is not limiting. As shown in FIG. 7, the cylindrical member 21 may be disposed at a position where the external magnet 3 passes through the central portion in the axial direction of the cylindrical member 21 in the vertical direction.

  As described above, according to the present embodiment, when the bicycle 9 is viewed from the side (as viewed from the direction of the rotation axis P of the pedal portion 94), the external magnet passes through the cylindrical member 21 of the current generator 2. By arranging 3, the spherical magnet 5 can be stably reciprocated even when the cylindrical member 21 remains stationary. That is, the spherical magnet 5 can be lightly driven by the magnetic force of the external magnet 3 passing through the vicinity without rotating, swinging, or vibrating the cylindrical member 21 itself.

  Further, since it is only necessary to fix one current generator 2 and one external magnet 3 to the bicycle 9, retrofitting is easy.

  In addition, since the vibrating member 22 is configured by one spherical magnet 5, no frictional resistance is generated (or suppressed) between the vibrating member 22 and the cylindrical member 21. Therefore, the vibrating member 22 can be reciprocated inside the cylindrical member 21 only by the magnetic force of the single external magnet 3 disposed away from the current generator 2. As a result, according to the present embodiment, it is possible to efficiently generate a current with a low torque. That is, the power generation efficiency of the current generator 2 can be improved. Moreover, the arrangement position of the cylindrical member 21 can also be selected comparatively freely.

  In the present embodiment, the external magnet 3 is fixed to the pedal portion 94 of the bicycle 9, but may be fixed to other locations as long as it is a rotating body of the bicycle 9. For example, as shown in FIG. 8, the external magnet 3 may be fixed to the spokes 920 of the front wheel portion 92 of the bicycle 9. Also in this case, when viewed from the side of the bicycle 9, the tubular member 21 of the current generating device 2 is arranged so as to overlap with the rotation locus of the external magnet 3 fixed to the front wheel portion 92. The current generator 2 may be attached to the body portion 91 via the attachment member 97.

  In the present embodiment, the light emitting unit 4 inevitably emits light when the bicycle 9 is traveling. However, the light emitting unit 4 may emit light only when necessary. Specifically, a switch (not shown) for switching conduction / non-conduction of the light emitting unit 4 may be provided, and when the switch is OFF, current transmission to the light emitting unit 4 may be cut off.

  In the present embodiment, both ends of the cylindrical member 21 are closed by the elastic member 23, but the elastic member 23 may be provided only on one side of the cylindrical member 21. For example, the elastic member 23 may be provided only in the direction in which the spherical magnet 5 is rotated by the attractive force (only in the left end portion of the cylindrical member 21 in FIG. 5). That is, at least one of the pair of closing members arranged at both ends of the cylindrical member 21 only needs to have an elastic member.

(Modification 1)
Although the example in which the current generator 2 and the light emitting unit 4 are connected via the cable 40 has been described in the above embodiment, the current generator and the light emitting unit may be provided integrally. In other words, a lighting fixture in which the current generator and the light emitting unit are integrally provided may be attached to the stationary body of the bicycle 9.

  FIG. 9 is a cross-sectional view schematically showing a configuration example of the lighting fixture 6 in Modification 1 of the present embodiment. FIG. 10 is an equivalent circuit diagram of the lighting fixture 6.

  The luminaire 6 includes the above-described current generator 2, a rectifier circuit 61, a charging circuit 62, a light source 63 included in the light emitting unit, a switch 64, and a housing 60. The current generator 2, the rectifier circuit 61, and the charging circuit 62 are accommodated in the housing 60, and the light source 63 and the operation unit for the switch 64 are exposed from the housing 60.

  The rectifier circuit 61 is provided at one end of the coil 24 and rectifies an alternating current generated in the coil 24. The charging circuit 62 charges the direct current converted by the rectifying circuit 61. For the charging circuit 62, for example, an electric double layer capacitor is used. The light source 63 is not particularly limited as long as it emits light when a current is applied, and an LED, an incandescent bulb, a discharge lamp, or the like can be used.

  The switch 64 is operated by the user to switch between the conduction and non-conduction of the light source 63. When the bicycle 9 is run with the switch turned off, the current generated by the current generator 2 is stored in the charging circuit 62. Therefore, according to this modification, if the charging circuit 62 is charged, the light source 63 can continuously emit light by turning on the switch 64 even when the bicycle 9 is not running.

  In the present modification, the lighting fixture 6 includes the switch 64. However, a configuration may be adopted in which a light sensor is mounted and the light source 63 is automatically turned on only at night.

(Modification 2)
In the said embodiment and the modification 1, although the electric current which generate | occur | produced with the electric current generator 2 was used for the illumination of the bicycle 9, it can utilize other than illumination. For example, the current after rectification by the rectifier circuit may be boosted by a booster circuit (DC-DC converter) and used for charging an information terminal such as a smartphone (smartphone) or a camera. Or you may enable it to perform both charging, such as illumination and an information terminal.

  Moreover, a solar panel may be mounted on the vibration dynamo power generator 1 to increase the amount of charge during the day. Thereby, night illumination can be performed effectively.

  Or you may utilize the electric current which generate | occur | produced in the electric current generator 2 for charge of the flashlight connected by the connector. Thereby, the flashlight can be used as removable night illumination. This flashlight may also be equipped with a solar panel as well as the above rectifier circuit and charging circuit. In this case, the flashlight can be charged efficiently.

(Modification 3)
In the above embodiment, the vibration member 22 of the current generator 2 is configured by one spherical magnet 5, but the vibration member 22 is configured by a plurality of elements including at least one spherical magnet 5. May be.

  FIG. 11 is a cross-sectional view schematically showing a configuration example of the current generator 2A in the present modification. The current generator 2 </ b> A includes a vibrating member 22 </ b> A instead of the vibrating member 22 of the above embodiment. The vibrating member 22 </ b> A includes two spherical magnets 51 and 52 and a columnar member 53 sandwiched between the two spherical magnets 51 and 52. The columnar member 53 is typically a magnet. The two spherical magnets 51 and 52 and the columnar member 53 hold each other with a magnetic attractive force.

  In this modification, the two spherical magnets 51 and 52 and the columnar member 53 are integrated and reciprocate along the axial direction of the cylindrical member 21. Of the three elements constituting the vibration member 22 </ b> A, the outer diameters of the spherical magnets 51 and 52 at both ends are substantially the same as each other and larger than the outer diameter of the columnar member 53. In this case, the spherical magnets 51 and 52 at both ends are in contact with the cylindrical member 21. The outer diameter of the spherical magnets 51 and 52 is a diameter. The outer diameter of the columnar member 53 is the diameter of the circle on the bottom surface in the case of a cylinder, and the diameter of the circumscribed circle on the bottom surface when the bottom surface is an n-gon (n is an integer of 3 or more).

  In this case, the vibration member 22A slides inside the cylindrical member 21 instead of rotating. However, since the vibration member 22A slides in a point contact state, the vibration member 22A slides between the vibration member 22A and the cylindrical member 21. Dynamic resistance (contact resistance) can be reduced. Accordingly, it is possible to prevent a decrease in power generation efficiency of the current generator 2A.

  In the present modification, the closing member that closes both ends of the cylindrical member 21 is constituted by the magnet 26 instead of the elastic member. The magnet 26 is arranged so as to be magnetically repelled by the facing spherical magnet 51 (52). Therefore, when the vibration member 22A slides along the axis of the cylindrical member 21 by the external magnet 3 repeatedly passing through the current generator 2A, the vibration member 22A is moved to the vibration member 22A by the magnet 26 at the end of the cylindrical member 21. A repulsive force to the other side acts. Therefore, according to this modification, even if the reciprocating vibration member is a vibration member 22A of the type that slides in the cylindrical member 21, the magnets 26 are arranged at both ends of the cylindrical member 21. Therefore, the vibrating member 22A can be reciprocated lightly.

  In the present modification, it is sufficient that at least one columnar member 53 and the spherical members at both ends thereof can be held together by a magnetic attractive force. Therefore, instead of the spherical magnets 51 and 52 at both ends, a spherical yoke is used. May be adopted. The yoke is a soft iron that amplifies the attractive force of the magnet, and may contain iron, including a soft magnetic material. As described in the above embodiment, even when the vibration member is composed of only one spherical member, the spherical member may be a yoke (steel ball) instead of a magnet.

(Other variations)
In the above embodiment, only one external magnet 3 is attached to the rotating body of the bicycle 9, but a plurality of external magnets 3 may be attached to different phases. For example, the external magnets 3 may be attached to the left and right pedal portions 94 of the bicycle 9, respectively.

  In addition, the external magnet 3 is attached to the rotating body of the bicycle 9 and the current generator 2 (or 2A) is attached to the stationary body of the bicycle 9. Conversely, the external magnet 3 is attached to the stationary body of the bicycle 9. Thus, the current generator 2 (or 2A) may be attached to the rotating body of the bicycle 9. Even in this case, since the external magnet 3 rotates relative to the current generator 2, the power generation efficiency can be improved as compared with the case where the current generator 2 alone generates power.

  In addition, the vibration dynamo power generation device 1 including the current generator 2 and the external magnet 3 is attached to the bicycle 9, but may be attached to an object other than the bicycle 9 as long as the object has a rotating body. For example, the attachment object of the vibration dynamo power generation device 1 may be a baby carriage or wheelchair including wheels, or may be a windmill.

  Or it is not limited to the form which the external magnet 3 and the electric current generator 2 rotate relatively, The form which these move relatively may be sufficient.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

  DESCRIPTION OF SYMBOLS 1 Vibrating dynamo power generator, 2, 2A Current generator, 21 Cylindrical member, 3 External magnet, 4 Light emitting part, 5, 51, 52 Spherical magnet, 6 Lighting fixture, 9 Bicycle, 22, 22A Vibrating member, 23, 23a , 23b Elastic member, 24 coil, 25 cap member, 26 magnet, 40 cable, 53 columnar member, 60 housing, 61 rectifier circuit, 62 charging circuit, 63 light source, 64 switch, 91 body part, 92 front wheel part, 93 rear Wheel part, 94 pedal part, 95 pedal, 96 crank, 97 attachment member, 920 spoke, M annular region (rotation locus).

Claims (7)

A non-magnetic cylindrical member, a coil disposed on the outer periphery of the cylindrical member, and a reciprocating motion along the extending direction of the cylindrical member are accommodated inside the cylindrical member. A current generator including a spherical member;
An external magnet disposed away from the current generator and moving relative to the cylindrical member;
The spherical dynamo power generator, wherein the spherical member reciprocates inside the cylindrical member by a magnetic field of the external magnet. The cylindrical member is attached to a fixed body of an attachment object,
2. The vibration dynamo power generation according to claim 1, wherein the external magnet is attached to a rotating body of the attachment target and rotates on a second virtual plane substantially parallel to the first virtual plane passing through the axis of the cylindrical member. apparatus.   The vibration dynamo power generation device according to claim 2, wherein a rotation locus of the external magnet overlaps with the cylindrical member when viewed from a direction orthogonal to the second virtual plane.   The vibration dynamo power generation device according to claim 1, wherein the spherical member is configured by a magnet. The current generator further includes a pair of closing members provided at both ends of the cylindrical member,
5. The vibration dynamo power generator according to claim 1, wherein at least one of the pair of closing members includes an elastic member that repels the spherical member toward the other side by an elastic force. Inside the cylindrical member, two spherical members and a columnar member sandwiched between the two spherical members are accommodated,
The vibration dynamo power generator according to any one of claims 1 to 3, wherein the two spherical members and the columnar member hold each other with a magnetic attractive force. The current generator further includes a pair of closing members provided at both ends of the cylindrical member,
The vibration dynamo power generator according to claim 6, wherein the closing member includes a magnet that repels the spherical member.

Images