JP2008259264A - Oscillation power generating set - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a relatively compact oscillation power generating set operating stably even for vibration of minute amplitude and generating electric energy efficiently from kinetic energy. <P>SOLUTION: The oscillation power generating set comprises a section 1 secured to an oscillating object, a movable section 10 supported by a bearing portion 7 movably in the two-dimensional direction for the secured section, a magnet 9 fixed to the movable section, a magnet 11 fixed to the secured section 1 and supporting the movable section 10 under noncontact state by magnetic attraction acting between the movable section magnet 9, and a wire coil 12 for power generation fixed to the secured section 1 to interlink with the magnetic flux of the movable section magnet 9. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a vibration power generator that is attached to a vibrating object and converts the kinetic energy of the vibrating object into electrical energy.

  In general, as a vibration power generation device that converts kinetic energy of a vibrating object such as a vehicle or a ship into electric energy and effectively uses the electric energy, a vibrating body made of a permanent magnet is provided as a spring in a power generation coil. A system is known that is elastically supported by a system and that an electromotive force is obtained between both ends of a power-generating conductor coil by electromagnetic induction during the relative movement of the two.

  As an example of such a vibration power generator, a spherical or cylindrical permanent magnet can be rolled with respect to a power generating lead coil (hereinafter referred to as a planar coil) formed in a planar shape, or a planar coil. On the other hand, there is one in which a permanent magnet is elastically supported by a coil spring or a leaf spring so as to be swingable (see, for example, Patent Document 1). As another example, a guide shaft is disposed in a space inside an air-core power-generating lead coil, and a permanent magnet is elastically supported by a coil spring along the guide shaft so as to be swingable (for example, a patent). Reference 2).

  The vibration power generation apparatus configured in this manner sets the vibration frequency of the elastic support portion so that the relative motion between the permanent magnet and the power generation lead coil is as large as possible in accordance with the vibration frequency of the vibrating object. The kinetic energy of the object can be efficiently converted into electric energy.

In particular, in the case of the configuration in which the permanent magnet is guided by the guide shaft as in Patent Document 2, the distance between the permanent magnet and the conductive coil is always kept constant during the relative movement between the permanent magnet and the kinetic energy of the vibrating object. Accordingly, it is possible to stably generate electric energy.
Japanese Patent Laid-Open No. 10-23729 JP-A-11-262234

  In the vibration power generation apparatus described in Patent Document 1 and Patent Document 2 described above, elastic deformation of an elastic support material (coil spring, leaf spring, or structure) is used to elastically support between the permanent magnet and the power generating lead coil. Therefore, if the strength of these materials is not sufficient, there is a possibility of fatigue failure due to repeated deformation.

  However, if sufficient strength is to be ensured, the ratio of the elastic support material to the entire vibration power generator increases, and it is difficult to reduce the size of the vibration power generator.

  In addition, the internal friction of the elastic support material and the friction between the elastic support material and other parts are caused by the relative motion between the permanent magnet and the conductive coil, but this friction has a small relative motion amplitude. As it becomes, it cannot be ignored, the motion state becomes unstable, and electric energy cannot be generated efficiently.

  Further, in the case where the guide shaft is provided as in the vibration power generation device of Patent Document 2, the vibration in the direction orthogonal to the guide direction further increases the frictional force acting on the guide shaft, thereby further reducing the minute amplitude vibration. There was a problem that the relative motion state between the permanent magnet and the power generating lead coil became unstable.

  Therefore, the present invention has been made to solve the above-described problems, and is relatively small in size, operates stably even with minute amplitude vibrations, and efficiently generates electrical energy from kinetic energy. An object of the present invention is to obtain a vibration power generation apparatus that can handle the above.

  In order to achieve the above object, the invention of the vibration power generator according to claim 1 is capable of moving on a two-dimensional plane with respect to the fixed portion by a fixed portion fixed to the vibrating object and the bearing portion. The movable part is elastically supported in a non-contact state by a supported movable part, a movable part magnet attached to the movable part, and a magnetic attractive force acting between the fixed part and the movable part magnet. It has a fixed part magnet and a power-generating lead coil attached to the fixed part so as to interlink with the magnetic flux of the movable part magnet.

  According to the present invention, the movable portion is supported by the bearing portion so as to freely vibrate on a two-dimensional plane. Therefore, even when applied to vibration with a relatively small amplitude, the movable portion is stable over a long period of time. It is possible to provide a vibration generator that can generate and use relatively large electric energy.

  Hereinafter, an embodiment of a vibration power generator according to the present invention will be described with reference to the drawings. In addition, the same code | symbol or a related code | symbol is attached | subjected to a common part throughout each figure, and description is abbreviate | omitted suitably.

(Embodiment 1)
First, with reference to FIG. 1 and FIG. 2, Embodiment 1 of the vibration electric power generating apparatus which concerns on this invention is demonstrated.
1 is a longitudinal sectional view (sectional view taken along the line II of FIG. 2) showing the configuration of the first embodiment of the vibration power generator according to the present invention, and FIG. 2 is a sectional view taken along the line II-II in FIG. is there.

  1 and 2, reference numeral 1 denotes a fixed portion of the vibration power generator, and the fixed portion 1 is a vibrating object (not shown), for example, a large structure that vibrates due to wind or traffic such as a bridge or a high-rise building, Alternatively, it is fixed to a power machine, a fluid machine, a fluid pipe or the like that vibrates with a relatively small amplitude during steady operation.

  The fixing portion 1 is arranged in parallel in the vertical direction with a predetermined gap, and two fixing portion plates 2 formed in a square shape or a rectangular shape made of a ferromagnetic material. The cross section which connects the four corners of the fixed part plate 2 is composed of a fixed part column 3 formed in an L shape.

  In the gap formed between these two fixed part plates 2, a single movable part plate 5 made of a ferromagnetic material and formed in a square or rectangular shape is parallel to the fixed part plate 2. Is arranged. Then, flat receiving seats 6 are fixed to the four corners of the two surfaces forming the front and back of the movable portion plate 5, that is, the right and left sides in the figure facing the fixed portion plate 2.

  On the other hand, spherical bearings 7 are respectively attached to the four corners of the two fixing plate 2 by spring washers 8 so as to face the flat receiving seats 6, and rolling of the ball bearings 7 is achieved by adjusting the spring washers 8. The surface is in contact with the flat seat 6 so that it can move smoothly. The spherical bearing is a hemispherical concave ball holder in which small spheres are freely arranged and one large sphere 14 is placed on the small sphere so that the large sphere 14 can be rotated in all directions. It is a so-called free ball bearing.

  Thus, since the movable part plate 5 is supported by the spherical bearing 7, it is perpendicular to the fixed part 1 (referred to as the X axis direction) and perpendicular to the vertical direction (referred to as the Y axis direction). It is supported so as to be freely movable on a two-dimensional plane.

  Two movable part element magnets 9a, 9b are fixed in the horizontal direction and parallel to each other in the vertical direction, that is, the middle part in the vertical direction in the figure on the right side surface and the left side surface, which form the front and back of the movable part plate 5, respectively. Yes.

  The movable part element magnets 9a and 9b may be fixed by any method such as resin bonding or screwing. These movable part element magnets 9a and 9b are collectively referred to as a movable part magnet 9, and the movable part plate 5 and the plane receiving seat 6 that moves together with the movable part plate 5 and the movable part magnet 9 are collectively referred to as a movable part 10.

  A fixed magnet 11 and a planar coil 12 (to be described later) are arranged and fixed on opposite surfaces of the two fixed plates 2 so as to face the movable magnet 9 with an appropriate gap therebetween. is doing. The fixed part magnet 11 includes two fixed part element magnets 11a and 11b corresponding to the movable part element magnets 9a and 9b, respectively.

  In addition, it arrange | positions so that the opposing magnetic pole surface may become a different magnetic pole so that the direction of the magnetic flux by the movable part element magnet 9a may correspond with the direction of the magnetic flux by the fixed part element magnet 11a arrange | positioned facing this. . Similarly, the opposing magnetic pole surfaces are arranged to be different magnetic poles so that the direction of the magnetic flux by the movable part element magnet 9b and the direction of the magnetic flux by the fixed part element magnet 11b arranged to face the same match. Yes.

  Further, the polarities of the adjacent movable element magnets 9a and 9b and the fixed element magnets 11a and 11b are different from each other.

  For example, the polarity of the surface facing the fixed part element magnet 11a of the movable part element magnet 9a fixed to one of the two surfaces forming the front and back of the movable part plate 5 (for example, the right side in the figure) is N poles. Then, the polarity of the facing surface of the fixed part element magnet 11a is the S pole, and the polarity of the movable part element magnet 9b adjacent to the movable part element magnet 9a is the S pole, which is fixed to face the movable part element magnet 9b. The partial element magnet 11b has an N pole.

  The relationship between the movable part element magnets 9a and 9b and the fixed part element magnets 11a and 11b is the same on the other surface (the left surface in the drawing) of the movable part plate 5.

  As a result of arranging the magnets in this way, the magnetic field between the movable element magnet 9a and the fixed element magnet 11a and the magnetic field between the movable element magnet 9b and the fixed element magnet 11b can be increased.

  The planar coil 12 is arranged in the gap between the movable part magnet 9 and the fixed part magnet 11 as described above, and the planar coil 12 is a planar coil fixing part 13 made of a non-magnetic material. These are fixed to the fixing part plate 2 via each other.

  The planar coil 12 and the planar coil fixing component 13 are fixed by, for example, bonding with resin or screws.

  In the right side portion of the movable part plate 5 shown in FIG. 1, the planar coil 12 interlinks the upper coil side of the four sides with the magnetic fluxes of the movable part element magnet 9a and the fixed part element magnet 11a, thereby causing electromagnetic induction. The lower side is a portion that performs electromagnetic induction by interlinking with the magnetic fluxes of the movable element magnet 9b and the fixed element magnet 11b.

  In addition, the advancing direction at the time of winding of the conducting wire of the planar coil 12 is opposite to each other in the portion performing the electromagnetic induction action of the two movable part element magnets 9a and 9b. For example, assuming that the moving direction of the lead wire in the portion that performs electromagnetic induction action with the movable element magnet 9a of the planar coil 12 is the direction from right to left in FIG. 2, it performs electromagnetic induction action with the movable element magnet 9b. In the part, the direction is from left to right.

  The movable part magnet 9, the fixed part magnet 11 and the planar coil 12 are arranged so as to be symmetric with respect to the movable part plate 5 in FIG. The planar coils 12 fixed to the two fixed plate 2 are electrically connected in series so that the electromotive force (positive / negative current) generated when the movable unit 10 moves in the vertical direction is added. The electromotive force is connected to an electrical load via an arbitrary electrical component / device such as a rectification unit, a current / voltage control unit, and a power storage unit (not shown). For example, the current obtained by the vibration power generation device is converted into direct current through a rectifier circuit, stored in a secondary battery, and the power is supplied to a drive power source of a sensor such as an accelerometer or a thermometer via a control device, It is used as a power source for display devices and wireless transmission devices.

Next, the operation of the first embodiment will be described.
(1) When the vibration power generation apparatus is stationary In the first embodiment configured as described above, when the object to which the vibration power generation apparatus is fixed is stationary, the movable portion 10 is fixed to the two-side movable portion magnets 9 forming the front and back. The magnetic attraction acting between the partial magnets 11 and the weight of the movable part 10 are suspended in a vertical direction to a position where the weight of the movable part 10 is balanced and are elastically supported in a non-contact state and are stationary. Therefore, the movable part 10 is displaced slightly downward from the state of FIG.

  In this case, the clearance between the flat bearing seat 6 on each of the two surfaces forming the front and back of the movable part 10 and the spherical bearing 7 is such that the movement of the movable part 10 in the vertical direction (X-axis direction) and the Y-axis direction orthogonal thereto are smooth. Adjust in advance so that This adjustment can be performed by adjusting the amount of a male screw portion (not shown) formed integrally with the holding portion of the spherical bearing 7 to be screwed into a female screw portion (not shown) of the fixed portion plate 2. At this time, since the spherical bearing 7 is attached to the fixed portion plate 2 via the spring washer 8, no loosening occurs even if such adjustment is performed.

  Further, the magnetic attractive force between the left and right movable part magnets 9 and the fixed part magnet 11 of the movable part 10 in FIG. 1 is movable so that the load between the flat seat 6 and the spherical bearing 7 becomes almost zero. The magnetic restoring force, that is, the magnetic spring force when the portion 10 is displaced in the vertical direction is adjusted in advance so as to have a required value.

  Although this adjustment is not shown, a method of providing an adjustment part for adjusting the length of the fixing part support 3 or a fixing part magnet 11 is fixed to a back yoke (not shown) and the back yoke is fixed to the fixing part plate 2. On the other hand, it can be appropriately performed by a method of providing an adjusting portion for parallel translation. By these methods, the frequency of the movable part 10 can be adjusted to a required value.

  For example, the kinetic energy of the vibrating object (not shown) is relatively efficient by adjusting the frequency of the movable part 10 near the main frequency of the vibrating object (not shown) and increasing the amplitude of the movable part 10 as much as possible. Can be converted into electrical energy well. By adjusting the gap between the flat seat 6 and the spherical bearing 7 and adjusting the magnetic attractive force between the movable part magnet 9 and the fixed part magnet 11, the movable part 10 is made of an elastic support material (coil spring, leaf spring, Or, it is elastically supported in a non-contact manner only by the magnetic attractive force between the movable part magnet 9 and the fixed part magnet 11 without using the elastic deformation of the structure), and the flat seat 6 and the spherical bearing 7 at the start of the movement. The friction caused by the load between them is stationary with almost zero.

(2) Vibration holding of the vibration power generation device Next, when an object (not shown) that fixes the vibration power generation device vibrates and the vibration power generation device vibrates in the vertical direction together with the object, It is transmitted to the movable part 10 via the magnetic attractive force between the movable part magnets 9. Since the movable part 10 is elastically supported in a non-contact state by the magnetic attraction force between the fixed part magnet 11 and the movable part magnet 9, it vibrates in the vertical direction at a frequency corresponding to the magnetic attraction force.

  At this time, the movable portion 10 is supported by the flat seat 6 and the spherical bearing 7 so as to be freely movable in the vertical direction (X-axis direction) and the Y-axis direction perpendicular to the paper surface, and the friction caused by the movement is supported. Since it is almost zero, it is possible to stably operate even with a minute amplitude of vibration.

  Further, since the vibration power generation apparatus has the movable part magnet 9, the fixed part magnet 11, and the planar coil 12 arranged symmetrically on the left and right, with the movable part plate 5 as the center, Since the attractive force between the movable part magnet 9 and the fixed part magnet 11 generated on the left and right sides and the attractive force between the movable part magnet 9 and the planar coil 12 are always kept in suspension, The load with the spherical bearing 7 is maintained substantially zero, and the friction accompanying the movement of the movable part 10 is also maintained substantially zero.

  Since the movable part magnet 9 and the planar coil 12 move relative to each other due to the vibration in the vertical direction (vertical direction) of the movable part 10, electric energy can be obtained by their electromagnetic induction action. In this case, the planar coil 12 is attached to the gap between the movable part magnet 9 and the fixed part magnet 11, and the adjacent magnetic poles and the opposing surfaces of the movable part element magnets 9a and 9b and the fixed part element magnets 11a and 11b are opposed to each other. Since the magnetic poles are arranged so as to be different from each other, the magnetic flux flowing through the fixed plate 2 and the movable plate 5 of the ferromagnetic material is strengthened, and the electromagnetic induction effect between the planar coil 12 and the movable magnet 9 is increased. Therefore, electric energy can be obtained efficiently.

  Further, since the movable magnets 9a and 9b having different magnetic poles simultaneously perform electromagnetic induction on coil sides in which the traveling directions of the windings of the planar coil 12 are opposite to each other, power generation per one planar coil 12 is performed. The amount can be made relatively large.

  According to the first embodiment, since only the magnetic force of the permanent magnet is used to elastically support the movable part of the vibration power generator, the elasticity of the elastic support material (coil spring, leaf spring, or structure) is used. Compared with the case of using deformation, there is no influence of the friction of the elastic support part accompanying the movement of the movable part, and the elastic support part can be downsized.

  In addition, since the magnetic attractive force and electromagnetic force generated on the left and right of the movable part are suspended, the friction generated in the bearing part accompanying the movement of the movable part is always almost zero, and the elastic support part is also non-conductive. Since it is a contact, it is possible to operate stably even with a minute amplitude of vibration, and it is possible to obtain high reliability over a long period of time without causing fatigue breakdown or wear.

  Furthermore, since the movable portion is supported by the bearing portion so as to be freely vibrable in the plane direction, it is possible to stably generate electric energy while keeping the distance between the permanent magnet and the power generating lead coil constant at all times. At the same time, since the load other than the vibration in the direction orthogonal to the plane direction in which the movable part can move is not a load on the bearing part, an increase in the frictional force of the bearing part due to the vibration force can be suppressed to a small level.

  Furthermore, since the direction of the winding of the power-generating conductor coil having the magnetic poles of each magnet and the coil side on which the magnet acts is arranged efficiently, relatively large electric energy can be obtained even with a small configuration.

  Therefore, according to the first embodiment, for example, wind vibration and traffic vibration of large structures such as bridges and high-rise buildings, or vibration during steady operation of equipment such as power machines, fluid machines, and fluid piping, Even when applied to vibrations having a relatively small amplitude, it is possible to generate a relatively large electric energy stably over a long period of time and effectively use it.

(Modification of Embodiment 1)
The present invention is not limited to the first embodiment described above, and can be implemented with various modifications as described below.

  (1) It is also possible to adopt a configuration in which the planar coil 12 is attached to only one of the two fixed portion plates 2, and in this case, the left and right force suspension acting on the movable portion 10 is slightly impaired, The vibration power generation apparatus as a whole can be further reduced in size and weight.

  (2) Instead of fixing the fixed part 1 of the vibration power generation device to the vibrating object, a means for fixing the movable part 10 may be provided, and the fixed part 1 in the first embodiment may be configured to relatively move. Any additional mass may be attached to the fixed portion 1 of the vibration power generator. In this case, the same effect as in the first embodiment can be obtained, and the frequency can be adjusted.

  (3) A multilayer inductor may be used instead of the planar coil 12, and the same effect as in the first embodiment can be obtained. In addition, a cylindrical coil may be used instead of the planar coil, and by arranging one movable part element magnet and the cylindrical surface of one cylindrical coil so as to perform electromagnetic induction, the same as in the first embodiment. Energy can be obtained, and the manufacturing cost of the coil can be reduced.

  (4) In the configuration in which the movable part element magnets 9a and 9b are arranged in a vertical row as in the first embodiment, an air-core power-generating conductor coil is fixed so as to surround the movable part horizontally instead of the planar coil. The movable part may be configured so that the movable part moves in the vertical direction inside the movable part element magnets. The movable part element magnets located on the back side of the movable part sandwiching the movable part with respect to one power generation conducting coil perform electromagnetic induction action. Thus, by arranging the surfaces of the movable element magnets positioned on the back side as different magnetic poles, electrical energy can be obtained as in the first embodiment.

  (5) In addition to the function as a vibration power generation device, the mass of the movable part, the magnetic spring constant, and the magnetic damping coefficient are designed to be optimized in accordance with the vibration of the vibrating object, thereby reducing the vibration. It can also function as a vibration absorber.

  (6) The vibration power generator may be installed at an arbitrary angle so that the movable part magnet and the planar coil generate the largest electrical energy in accordance with the vibration direction of the vibrating object. Even when the vibration power generation apparatus having the configuration of the first embodiment is tilted by 90 degrees and installed so that the movable part moves horizontally, the load of the bearing part is adjusted by adjusting the magnetic attraction force of the two surfaces forming the front and back of the movable part. It can be made almost zero, and the same effect as in the first embodiment can be obtained.

  (7) When the kinetic energy of the vibrating object is large, a plurality of vibration power generators may be installed, and electrical energy can be obtained in the same manner as in the first embodiment.

  (8) When there are multiple main frequencies of the vibrating object, or when there are multiple directions of vibration, multiple vibration power generators may be installed and applied to different frequencies and directions, respectively. Electrical energy can be obtained as in the first mode.

  (9) When a plurality of vibration power generators are installed as described above, a configuration in which they are electrically and mechanically connected may be adopted, thereby improving handling. In addition, the manufacturing cost can be reduced by reducing the number of parts as a whole, such as by sharing secondary batteries.

  (10) In addition to the configuration of the vibration power generation apparatus of the first embodiment, by providing a sensor that detects the current, it is also possible to measure the acceleration of an object that vibrates with power generation.

  (11) A configuration may be adopted in which an arbitrary vibration amplification component is fixed to a vibrating object and a vibration power generation device is attached thereto. As a result, the vibration power generation device vibrates more greatly. Can be obtained. Further, the vibration power generation apparatus can be applied even when close installation is difficult, for example, when a vibrating object is at a high temperature.

  (12) The whole fixed portion of the vibration power generator may be sealed with an exterior cover, and dust adhesion, metal part adsorption, and the like in the vibration power generator can be prevented. In addition, when installed in a clean room, it is possible to prevent dust diffusion due to vibration of the movable part.

(Embodiment 2)
Next, a second embodiment of the vibration power generator according to the present invention will be described with reference to FIG.
FIG. 3 is a longitudinal sectional view showing the configuration of the second embodiment of the vibration power generator according to the present invention.
The second embodiment is different from the first embodiment in that the planar coil 12 is moved from the fixed plate 2 side to the movable plate 5 side.

  That is, in FIG. 3, the planar coil 12 is fixed to two surfaces forming the front and back of the movable plate 5 via the planar coil fixing component 13. For this reason, the movable part 10 is comprised from the movable part board 5, the plane receiving seat 6, the movable part magnet 9, the planar coil 12, and the planar coil fixing | fixed part 13, and others become the structure similar to Embodiment 1. FIG. Yes.

  In the second embodiment configured as described above, the operation is the same as in the first embodiment except that the stationary magnet 11 performs an electromagnetic induction action on the planar coil 12.

  According to the second embodiment, the same effect as in the first embodiment can be obtained, and since the planar coil 12 is fixed to the movable part plate 5, the small shape of the entire vibration power generator is maintained. However, the mass of the movable part 10 can be increased. Thereby, although it is a vibration power generator constituted comparatively small, it can be applied to vibration of larger kinetic energy.

(Embodiment 3)
Next, a third embodiment of the vibration power generator according to the present invention will be described with reference to FIGS. 4 and 5.
4 is a longitudinal sectional view (sectional view taken along line IV-IV in FIG. 5) showing the configuration of the third embodiment of the present invention, and FIG. 5 is a sectional view taken along line VV in FIG.

  The third embodiment is different from the first embodiment in that two sets of elements each including a movable part magnet 9, a fixed part magnet 11, and a planar coil 12 are provided in the vertical direction.

  That is, in FIG. 4 and FIG. 5, two planar coils 12 are provided in the vertical direction (vertical direction) and the horizontal direction (lateral direction) per one fixed plate 2 via the planar coil fixing component 13. Four each (12R1, 12R2, 12L1, 12L2) are attached. Therefore, eight planar coils 12 are attached to the two fixed portion plates 2 as a whole.

  These planar coils 12R1, 12R2, 12L1, and 12L2 are all of coil sides that perform electromagnetic induction with the movable part magnet 9 in order to obtain an electromotive force by vibration in the vertical direction (X-axis direction) of the movable part 10. It arrange | positions so that the direction of a winding may become a horizontal direction.

  For each of these planar coils 12R1, 12R2, 12L1, 12L2, two movable element magnets 9a, 9b and fixed element magnets 11a, 11b are fixed to the movable plate 5 and the fixed plate 2, respectively. Yes.

  Although not shown, the planar coils 12R1, 12R2, 12L1, and 12L2 are electrically connected in series so that the polarities (positive / negative of current) of the electromotive force generated when the movable unit 10 moves in the vertical direction match. Yes. Other configurations are the same as those of the first embodiment.

  In the third embodiment configured as described above, the third embodiment operates in the same manner as the first embodiment except that the movable portion magnets 9 that are adjacent to the total of the eight planar coils 12 perform electromagnetic induction.

  According to the third embodiment, the same effects as in the first embodiment can be obtained, and the plurality of planar coils 12 are arranged in parallel in the vertical direction and the horizontal direction, which are the vibration directions of the movable part plate 5, respectively. Even when the vibrating object is large like a building or a bridge, the kinetic energy generated by the vibration of the minute amplitude can be efficiently converted into electric energy for effective use.

(Embodiment 4)
Next, a fourth embodiment of the vibration power generator according to the present invention will be described with reference to FIG.
FIG. 6 is a cross-sectional view showing the configuration of the fourth embodiment of the present invention, and is a cross-sectional view corresponding to FIG. 5 of the third embodiment.

  The fourth embodiment is different from the third embodiment in that it includes four movable part element magnets 9a and 9b, fixed part element magnets 11a and 11b, and a planar coil 12 provided for each fixed part plate 2. Of the elements, the attachment positions of the upper coil 12R1, the lower coil 12L2, the movable element magnets 9a and 9b, and the fixed element magnets 11a and 11b are rotated 90 degrees, that is, they are rearranged. However, in accordance with the rearrangement, the planar coil 12R1 and the lower coil 12L2 are changed to 12RU and 12LD, respectively, and the lower coil 12R2 and the upper coil 12L1 are changed to 12RD and 12LU, respectively. Others are the same as in the third embodiment.

  In FIG. 6, the planar coils 12 LU and 12 RD located at the upper left and lower right of the planar coil 12 have movable parts for obtaining an electromotive force by vibration in the vertical direction (Y-axis direction) of the movable part 10. It arrange | positions so that the direction of the coil | winding of the coil side which performs electromagnetic induction action with the magnet 9 may turn into a horizontal direction.

  Further, in FIG. 6, the upper right and lower left planar coils 12RU and 12LD whose attachment positions are rotated by 90 degrees have their movable part magnets in order to obtain an electromotive force by the vibration of the movable part 10 in the horizontal direction (X-axis direction). 9 is arranged so that the winding direction of the coil side that performs electromagnetic induction action is the vertical direction.

  Among the planar coils 12, those in which an electromotive force is obtained by the vertical vibration of the movable part 10 are added so that the electromotive force generated when the movable part 10 moves in the vertical direction is added so that the positive and negative of the current match. Independently of this, an electromotive force obtained by horizontal vibration of the movable part 10 is added to the electromotive force generated when the movable part 10 is moved in the horizontal direction, so that the positive / negative of the current is obtained. They are electrically connected to match.

  These electromotive forces are not shown, but are converted into direct current via, for example, independent rectifier circuits, stored in one secondary battery, and supplied to an electrical load for use. . Others are the same as in the first and third embodiments.

  According to the fourth embodiment configured as described above, when the movable portion 10 moves in the vertical direction, among the planar coils 12, an electromotive force can be obtained by vibration in the vertical direction and the movable portion magnet 9 adjacent thereto. When the movable part 10 is moved in the horizontal direction, the electromagnetic induction action between each of the planar coils 12 that can generate an electromotive force by the vibration in the horizontal direction and the movable part magnet 9 adjacent thereto. The operation is the same as in the first and third embodiments except that the electric power is generated by.

  As described above, according to the fourth embodiment, the same effects as in the first and third embodiments can be obtained, and the plurality of planar coils 12 are arranged horizontally and vertically with respect to the mounting position. The kinetic energy in two orthogonal directions of an object that vibrates with one vibration power generator can be converted into electrical energy at the same time for effective use.

(Embodiment 5)
Next, a fifth embodiment of the vibration power generator according to the present invention will be described with reference to FIGS.
FIG. 7 is a longitudinal sectional view (sectional view taken along arrow VII-VII in FIG. 8) showing the configuration of the fifth embodiment of the present invention, and FIG. 8 is a sectional view taken along arrow VIII-VIII in FIG.

  In FIG. 7 and FIG. 8, the planar coil 12 is fixed to the left and right 12R, 12L side by side with a planar coil fixing part 13 per one fixed plate 2, and each of the planar coils 12R, 12L. A total of four fixed magnets 11 are fixed one by one at the illustrated upper and lower positions.

  And the movable coil 14 for electric power generation which performs an electromagnetic induction effect | action with the said planar coil 12 is being fixed to the two surfaces which make the front and back of the movable part board 5, respectively. The power generating movable part magnet 14 is composed of two power generating movable part element magnets 14 a and 14 b, and two power generating movable part element magnets 14 a having different magnetic poles with respect to one planar coil 12. , 14b are arranged to perform electromagnetic induction.

  In addition, elastic supporting movable part magnets 15 that generate a magnetic attraction force with respect to the fixed part magnet 11 are respectively fixed to the upper and lower positions of the movable part magnet 14 for power generation of the movable part plate 5. The elastic support movable part magnet 15 includes two elastic support movable part element magnets 15a and 15b. The adjacent magnetic poles of the power generation movable part element magnets 14a and 14b and the elastic support movable part element magnets 15a and 15b are different from each other, and the fixed part element magnets facing the elastic support movable part element magnets 15a and 15b. The magnetic poles on the opposing surfaces of 11a and 11b are also different from each other. Other configurations are the same as those in the first or third embodiment.

Next, the operation of the fifth embodiment will be described.
(1) When the vibration power generator is stationary When the object to which the vibration power generator is fixed is stationary, the movable part 10 is moved by the magnetic attraction force between the elastic support movable part magnet 15 and the fixed part magnet 11 on the front and back sides. Elastically supported in a non-contact state. At this time, since the planar coil 12 is not arranged in the gap between the elastic support movable part magnet 15 and the fixed part magnet 11, the size of the gap and the elastic support movable part magnet 15 and the fixed part magnet 11 are arranged. It is possible to freely design the shape, dimensions, etc., without considering the planar coil 12.

(2) Vibration holding of the vibration power generation device Next, when an object (not shown) that fixes the vibration power generation device vibrates and the vibration power generation device vibrates in the vertical direction together with the object, It is transmitted to the movable part 10 through a magnetic attractive force between the elastic support movable part magnets 15. The movable part 10 is elastically supported by a magnetic spring constant determined from the magnetic attraction force between the fixed part magnet 11 and the elastic support movable part magnet 15 and vibrates in the vertical direction. Due to the vertical vibration of the movable part 10, the power generating movable part magnet 14 and the planar coil 12 move relative to each other, so that electric energy can be obtained.

  At this time, since no magnet that generates a magnetic attractive force with the power generation movable part magnet 14 is provided on the fixed part plate 2 side, the condition for elastic support of the movable part 10 is not considered. It is possible to freely design the shapes, dimensions, and the like of the movable part magnet 14 and the planar coil 12. The other operations are the same as those in the first embodiment.

  As described above, according to the fifth embodiment, in addition to the same effects as in the first embodiment, the magnet to be attached to the movable portion 10 is composed of the power generating movable portion magnet 14 and the elastic support movable portion magnet 15. The power generation movable part magnet 14 is used only for electromagnetic induction with the planar coil 12, and the elastic support movable part magnet 15 is used only for the magnetic attractive force between the fixed part magnet 11. For this reason, the degree of freedom in design increases, and the design becomes easy. Also, the adjustment of the magnetic attraction force and the magnitude of the electromagnetic induction action, that is, the adjustment of the distance between the power generating movable part magnet 14 and the planar coil 12, and the distance between the elastic supporting movable part magnet 15 and the fixed part magnet 11 are adjusted. The adjustment can be performed independently, and the adjustment work becomes easy.

(Embodiment 6)
Next, the vibration power generator according to the present invention will be described with reference to FIGS. 9 and 10.
9 is a longitudinal sectional view (sectional view taken along the line IX-IX in FIG. 10) showing the configuration of the sixth embodiment of the present invention, and FIG. 10 is a sectional view taken along the line XX in FIG.

  The sixth embodiment is different from the fifth embodiment in that the weight supporting movable portion magnet 16 is attached to the upper portion of the movable portion 10 and the weight supporting movable portion magnet is attached to the fixed portion support 3 at the upper portion of the fixing portion 1. The weight-supporting fixed portion magnet 18 is attached so as to face 16 and the other configuration is the same as that of the fifth embodiment.

  9 and 10, the movable portion 10 has a weight supporting movable portion magnet 16 attached to the upper end portion of the movable portion plate 5. The weight supporting movable part magnet 16 is composed of two weight indicating movable part element magnets 16a and 16b and back yokes 16c having different magnetic poles.

  Further, an upper fixing part plate 17 is fixed to the upper part of the upper fixing part column 3, and a weight supporting fixing part 17 is fixed to the lower part of the upper fixing part plate 17 so as to face the weight supporting movable part magnet 16. A partial magnet 18 is attached. The weight supporting fixed part magnet 18 is composed of two weight supporting fixed part element magnets 18a and 18b whose surfaces facing the weight supporting movable part element magnets 16a and 16b have different magnetic poles.

  When the vibration power generator is stationary, the movable portion 10 is elastically supported in a non-contact state by the magnetic attractive force between the two elastic supporting movable portion magnets 15 and the fixed portion magnet 11 that form the front and back surfaces, and the weight of the upper portion thereof. It is stationary in a state of being attracted in a non-contact manner vertically upward by a magnetic attraction force between the support movable part magnet 16 and the weight support fixed part magnet 18.

  The magnetic attractive force between the elastic supporting movable part magnet 15 and the fixed part magnet 11 and the magnetic attractive force between the weight supporting movable part magnet 16 and the weight supporting fixed part magnet 18 are determined by the frequency and weight of the movable part 10. Is designed in consideration of For example, the magnetic attractive force between the weight supporting movable part magnet 16 and the weight supporting fixed part magnet 18 is designed to suspend the weight of the movable part 10.

  Further, when the movable portion 10 moves in the vertical direction, the magnetic force between the elastic support movable portion magnet 16 and the fixed portion magnet 11 acts in a direction to restore the position of the movable portion 10 to its stationary position, but for weight support. Since the movable part magnet 16 and the weight supporting fixed part magnet 18 work in a direction that does not restore, the design is made such that the restoring force is larger. This makes it possible to relatively reduce the restoring force in the vertical direction, that is, the spring constant, while elastically supporting the movable portion 10 in a non-contact and stable manner. Other operations are the same as those of the fifth embodiment.

  As described above, according to the sixth embodiment, in addition to the effects of the fifth embodiment, the weight of the movable portion 10 is reduced by the magnetic attractive force between the weight supporting movable portion magnet 16 and the weight supporting fixed portion magnet 18. Since it is elastically supported in the non-contact state vertically above, even when the weight of the movable portion 10 of the vibration power generator is large, the non-contact elastic support state can be stably maintained.

  The magnetic attractive force acting between the weight supporting movable part magnet 16 and the weight supporting fixed part magnet 18 is a spring constant due to the magnetic attractive force between the elastic supporting movable part magnet 15 and the fixed part magnet 11 of the movable part 10. Therefore, even when the frequency of the vibrating object is relatively low, the kinetic energy can be efficiently converted into electric energy and used effectively.

(Embodiment 7)
Next, a seventh embodiment of the vibration power generator according to the present invention will be described with reference to FIG.
FIG. 11 is a longitudinal sectional view showing the configuration of the seventh embodiment of the present invention.
In FIG. 11, the fixing portion 1 is composed of three fixing portion plates 2 and four fixing portion columns 3 that connect them. The movable part 10 is composed of two movable part plates 5 and a plurality of movable part struts 19 connecting them at the upper and lower parts.

  Each movable part support column 19 is attached so as to penetrate through the hole 20 provided in the fixed part plate 2 located in the center among the three fixed part plates 2 in a non-contact state.

  Then, on the opposing surfaces of the two fixed portion plates 2 located on both sides, two planar coils 12 are arranged side by side and fixed side by side through the planar coil fixing component 13 as in the fifth embodiment. Two fixed magnets 11 are fixed to the upper and lower positions of the planar coil 12. Similarly, the planar coil 12 and the fixed portion magnet 11 are fixed to the two surfaces forming the front and back surfaces of the central fixed portion plate 2, respectively.

  As in the fifth embodiment, a power generation movable part magnet 14 that performs electromagnetic induction action is fixed to two surfaces forming the front and back of the two movable part plates 5, and the power generation movable part Two elastic supporting movable part magnets 15 that generate a magnetic attractive force between the fixed part magnets 11 are fixed above and below the magnets 14 respectively.

  An arbitrary number of plane receiving seats 6 are fixed to the left surface of the movable plate 5 arranged on the left side of the drawing and the right surface of the movable plate 5 arranged on the right side of the drawing, respectively. A spherical bearing 7 is attached to the fixed portion plate 2 disposed in the position via a spring washer 8. Other configurations are the same as those of the fifth embodiment.

  In the seventh embodiment configured as described above, the operation is the same as in the fifth embodiment except that the two movable part plates 5 move relative to the three fixed part plates 2.

  As described above, according to the seventh embodiment, in addition to the effects of the fifth embodiment, since the plurality of fixed portion plates 2 and the movable portion plate 5 are integrally connected, one vibration power generation A large number of planar coils 12 and magnets that interact with the device can be attached to the apparatus, and even when the vibrating object is large, such as a building or a bridge, the kinetic energy due to the vibration of the minute amplitude can be efficiently obtained. It can be used effectively by converting to electrical energy.

The longitudinal cross-sectional view which shows the structure of Embodiment 1 of this invention (II arrow longitudinal cross-sectional view in FIG. 2). II-II arrow sectional drawing in FIG. The longitudinal cross-sectional view which shows the structure of Embodiment 2 of this invention. The longitudinal cross-sectional view which shows the structure of Embodiment 3 of this invention (IV-IV arrow longitudinal cross-sectional view in FIG. 5). FIG. 5 is a cross-sectional view taken along line VV in FIG. 4. Sectional drawing which shows the structure of Embodiment 4 of this invention. The longitudinal cross-sectional view which shows the structure of Embodiment 5 of this invention (VII-VII arrow longitudinal cross-sectional view in FIG. 8). VIII-VIII arrow sectional drawing in FIG. The longitudinal cross-sectional view (IX-IX arrow longitudinal cross-sectional view in FIG. 10) which shows the structure of Embodiment 6 of this invention. XX arrow sectional drawing in FIG. The longitudinal cross-sectional view which shows the structure of Embodiment 7 of this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Fixed part, 2 ... Fixed part board, 3 ... Fixed part support | pillar, 5 ... Movable part board, 6 ... Planar seat, 7 ... Spherical bearing, 8 ... Spring washer, 9 ... Movable part magnet Movable part element magnet, 9a , 9b: Movable part element magnet, 10 ... Movable part, 11 ... Fixed part magnet, 11a, 11b ... Fixed part element magnet, 12 ... Planar coil, 13 ... Planar coil fixed part, 14 ... Movable part magnet for power generation, 14a, 14b ... movable part element magnet for power generation, 15 ... movable part magnet for elastic support, 15a, 15b ... movable part element magnet for elastic support, 16 ... movable part magnet for weight support, 16a, 16b ... movable part for weight indication Element magnet, 16c ... Back yoke, 17 ... Upper fixed part plate, 18 ... Weight support fixed part magnet, 18a, 18b ... Weight support fixed part element magnet, 19 ... Movable part support, 20 ... Hole.

Claims (10)

A fixed part fixed to a vibrating object;
A movable part supported by a bearing part so as to be movable on a two-dimensional plane with respect to the fixed part;
A movable part magnet attached to the movable part;
A fixed part magnet that is elastically supported in a non-contact state by a magnetic attraction force that is attached to the fixed part and acts between the movable part magnet;
A power generating coil attached to the fixed part so as to interlink with the magnetic flux of the movable part magnet;
A vibration power generator characterized by comprising:   The vibration power generator according to claim 1, wherein the power generating conductive coil is provided in a gap between the movable part magnet and the opposed fixed part magnet.   The movable part magnet comprises an elastic support movable part magnet and a power generation movable part magnet, and the elastic support movable part magnet is arranged so that a magnetic attractive force acts between the fixed part magnet, 2. The vibration power generator according to claim 1, wherein the power generating lead coil is arranged so as to interlink with the magnetic flux of the power generating movable part magnet.   The power generating lead coil is formed by a planar coil or a laminated chip coil having two coil sides, the movable part magnet is constituted by two movable part element magnets having different magnetic poles, and the one planar coil or 4. The laminated chip coil according to claim 1, wherein the coil sides of the laminated chip coil are arranged so as to be linked to each other and the moving parts of the different magnetic poles are linked to each other, and the traveling directions at the time of winding of the coil are reversed. The vibration power generator according to any one of the above.   5. The vibration according to claim 1, wherein the movable part magnet, the fixed part magnet, and the power-generating conductor coil are arranged symmetrically with respect to a center plane of the movable part. Power generation device.   The vibration according to any one of claims 1 to 5, wherein the power generating conductor coil is attached to a position interlinked with the magnetic flux of the fixed part magnet of the movable part instead of being attached to the fixed part. Power generation device.   7. The vibration power generator according to claim 1, wherein a plurality of the power generating coil coils are arranged in parallel in the vertical direction and the horizontal direction with respect to the fixed part or the movable part.   The vibration power generator according to any one of claims 1 to 6, wherein a plurality of the power-generating conductor coils are arranged in parallel in the vertical direction and the horizontal direction, respectively.   A weight-supporting movable part magnet is attached to an upper part in the vertical direction of the movable part, and a magnetic attraction force acts on the fixed part facing the upper part in the vertical direction of the movable part. The vibration power generator according to any one of claims 1 to 8, further comprising a weight supporting fixing part magnet.   10. The vibration power generator according to claim 1, wherein a plurality of the movable parts are provided and the movable parts are integrally connected.

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