JP2015228740A - Power generator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a power generator which enables improvement of the generating efficiency per unit deformation quantity in a power generation element.SOLUTION: A power generator 10 includes: a power generation plate 30; a first contact part 40 provided on an upper surface of the power generation plate 30; and a second contact part 52 provided on a lower surface of the power generation plate 30. The second contact part 52 includes a space part 55 which allows the power generation plate 30 to enter thereinto. The first contact part 40 and the second contact part 52 are disposed so that pressing deformation of the power generation plate 30 reaches first deformation quantity when the pressing deformation of the power generation plate 30 reaches second deformation quantity and an external force is applied to the power generator 10.

Description

  The present invention relates to a power generator.

  Conventionally, power generation devices using power generation elements have been proposed. For example, a power generation device that obtains an electromotive force by deforming the power generation element by directly applying an external force to the power generation element is disclosed (for example, see Patent Document 1). Specifically, the power generation device is disposed between the fixed plate, the movable plate that moves in the direction approaching the fixed plate when an external force acts, and the fixed plate and the movable plate. And a power generation module having a power generation element, and a circuit board that performs control related to the power generation device. In addition, since the peripheral spacer is provided in the vicinity of the outer edge on one of the side surfaces of the power generation module and the center spacer is provided in the center position on the other side of the power generation module, the power generation module is supported by a simple support type. ing. With such a configuration, when an external force acts on the power generation device, the power generation element is pressed with the movement of the movable plate to generate electric power.

JP 2011-250520 A

  Here, it is known that the relationship between the voltage of the power generation element and the amount of deformation is not a proportional relationship but shows a curvilinear relationship called a hysteresis curve. Specifically, the amount of increase in voltage is relatively small when the amount of deformation of the power generation element is small, and the amount of increase of voltage is relatively large when the amount of deformation of the power generation element is large. Accordingly, in the conventional power generation apparatus described above, the power generation element is deformed from a state where the power generation element is not deformed to a deformation amount by which an external force is applied to the power generation apparatus to obtain a desired power generation amount. Therefore, the power generation efficiency per unit deformation amount of the power generation element was low. In view of such a point, an apparatus capable of improving the power generation efficiency per unit deformation amount in the power generation element has been demanded.

  This invention is made | formed in view of the above, Comprising: It aims at providing the electric power generating apparatus which can improve the electric power generation efficiency per unit deformation amount in an electric power generation element.

  In order to solve the above-described problems and achieve the object, the power generation device according to claim 1 is a power generation device that converts an external force into electricity using a power generation element, the power generation plate having the power generation element, First contact means provided so as to be able to contact one of the side surfaces of the power generation plate, and a first contact means provided so as to be able to contact a side surface of the power generation plate opposite to the side surface on the first contact means side. Two abutting means, and the second abutting means is configured such that, when the power generating plate is pressed toward the second abutting means, the power generating plate reaches at least the first deformation amount. The power generation plate is provided with a space that allows the power generation plate to enter so that it can be pressed and deformed. When no external force is applied to the power generation device, the power generation plate is connected to the first contact means and the first 2 in contact with the contact means Thus, when a part of the power generation plate enters the space portion, the pressing deformation of the power generation plate reaches a second deformation amount that is a deformation amount smaller than the first deformation amount, and an external force is applied to the power generation device. When added, a part of the power generation plate enters the space portion with the movement of either the first contact means or the second contact means, so that the power generation plate The first contact means and the second contact means are arranged so that the pressing deformation reaches the first deformation amount.

  The power generation device according to claim 2 is the power generation device according to claim 1, wherein the power generation element corresponds to the space portion in a state in which the power generation plate is in contact with the second contact means. At least the power generation plate was formed so as to be always within the region of the part.

  Further, the power generation device according to claim 3 is the power generation device according to claim 1 or 2, further comprising one base portion, wherein the power generation plate is connected to the side surface on one of the side surfaces of the one base portion. A plurality of the power generation plates are arranged side by side in a predetermined direction so as to abut, and a plurality of the first power generation plates are arranged on a side surface of each of the plurality of power generation plates opposite to the side surface abutting on the one base portion. Each of the contact means is provided, and a part of the portion corresponding to each of the plurality of power generation plates in the one base portion is formed as the second contact means, respectively, and the plurality of the plurality of the base portions in the one base portion are formed. The space portions were formed in the other part of the portion corresponding to each of the power generation plates.

  According to a fourth aspect of the present invention, there is provided the power generation apparatus according to the third aspect, wherein the power generation apparatus according to the third aspect further includes an aggregation region for aggregating the wirings connected to the power generation elements of the at least two power generation plates. It was.

  According to a fifth aspect of the present invention, in the power generation device according to the third or fourth aspect, at least a part of the plurality of power generation plates can be detachably attached to the one base portion.

  Further, the power generation device according to claim 6 is the power generation device according to any one of claims 3 to 5, wherein the plurality of power generation plates are provided on a side surface of the one base portion on the side of the plurality of power generation plates. A recess capable of receiving each of the first base portion, and the space portion is formed in a part of a portion of the one base portion adjacent to the side surface opposite to the side surface on the first contact means side. And forming another part of the concave portion of the one base portion adjacent to the side surface on the side opposite to the side surface on the first contact means side as the second contact means.

  The power generator according to claim 7 is the power generator according to any one of claims 3 to 6, wherein the one base portion is a circuit board electrically connected to the power generation plate. .

  Further, the power generation device according to claim 8 is the power generation device according to any one of claims 1 to 7, wherein when the pressure deformation of the power generation plate reaches a predetermined amount, the power generation plate is subjected to pressure deformation. Further provided is a deformation suppressing means for suppressing.

  Further, the power generation device according to claim 9 is the power generation device according to any one of claims 1 to 8, wherein the power generation plate includes the power generation element, a vibration plate that transmits vibration to the power generation element, The power generation element is disposed on at least one side surface of the vibration plate, and the vibration plate is formed so that the thickness of the vibration plate is larger than the thickness of the power generation element.

  Moreover, the electric power generating apparatus of Claim 10 is further provided with one base part in the electric power generating apparatus of Claim 1, and the said electric power generation plate contact | abuts the said side surface in one of the side surfaces of the said one base part. As described above, a plurality of the power generation plates are arranged side by side along a predetermined direction, and a plurality of the first abutments are provided on the side surface of each of the plurality of power generation plates opposite to the side surface abutting against the one base portion. Each of the plurality of power generation plates is formed on a side surface of the one base portion on the side of the plurality of power generation plates, and the first recesses in the one base portion are formed. The space is formed in a part of the portion adjacent to the side surface opposite to the side surface on the abutting means side, and the side surface on the first abutting means side of the recess in the one base portion Forms another part of the portion adjacent to the opposite side surface as the second contact means, and the power generation plate includes the power generation element and a vibration plate that transmits vibration to the power generation element. In the state where the power generation plate is in contact with the second contact means, the power generation plate and the one base portion are arranged so that the power generation element is always within the region corresponding to the space portion. Formed based on the following formula, C1 ≧ B1, E-C1-D ≧ B2, E-C1-C2-D ≦ B2, C2 ≧ B2, E-C2-D ≧ B1, E-C1-C2-D ≦ B1 (where B1 is the length from one end in the width direction of the recess to one end in the width direction of the space, and B2 is the space from the other end in the width direction of the recess. The length to the other end in the width direction of the part, C1 is The length from one end in the width direction of the diaphragm to one end in the width direction of the power generating element, C2 is the other end in the width direction of the power generating element from the other end in the width direction of the diaphragm D is the length from one end in the width direction of the power generating element to the other end in the width direction, and E is the width from one end in the width direction of the recess. The length to the other end of the direction).

  Moreover, the electric power generating apparatus of Claim 11 is further provided with one base part in the electric power generating apparatus of Claim 1, and the said electric power generation plate contact | abuts the said side surface in one of the side surfaces of the said one base part. As described above, a plurality of the power generation plates are arranged side by side along a predetermined direction, and a plurality of the first abutments are provided on the side surface of each of the plurality of power generation plates opposite to the side surface abutting against the one base portion. Each of the plurality of power generation plates in the one base portion is formed as a part of a portion corresponding to each of the plurality of power generation plates in the one base portion. The space portion is formed in another part of the part corresponding to each of the plurality of power generation plates, and at least a part of the plurality of power generation plates can be detachably attached to the one base part. The power generation plate includes the power generation element and a vibration plate that transmits vibration to the power generation element. When the power generation plate is in contact with the second contact means, the power generation element is in the space portion. The power generation plate and the one base portion are formed based on the following formulas so that the power generation plate and the one base portion always fall within the corresponding region. The length from one end in the width direction to one end in the width direction of the power generation element, C2 is from the other end in the width direction of the diaphragm to the other end in the width direction of the power generation element F1 is the length from one end of the diaphragm in the width direction to one end of the space in the width direction, and F2 is the width from the other end of the diaphragm in the width direction. Width in the part The length of the to the other end).

  According to the power generation device of the first aspect, when no external force is applied to the power generation device, the power generation plate comes into contact with the first contact means and the second contact means so that one of the power generation plates When the portion enters the space portion, the pressing deformation of the power generation plate reaches the second deformation amount, and when an external force is applied to the power generation device, either the first contact means or the second contact means is used. The first abutting means and the second abutting means are arranged so that a part of the power generation plate enters the space portion with the movement of one of them and the pressing deformation of the power generation plate reaches the first deformation amount. Therefore, by pressing and deforming the power generation element in a state where no external force is applied to the power generation device, the external force is applied from the state where no external force is applied to the power generation device, whereby the pressure deformation of the power generation plate is the first deformation. Amount reached It is possible to reduce the amount of deformation of the power generating element until that state, as compared with the conventional apparatus, it is possible to improve the power generation efficiency per unit amount of deformation in the power generation element.

  According to the power generation device of claim 2, in a state where the power generation plate is in contact with the second contact means, at least the power generation plate so that the power generation element is always within the region corresponding to the space portion. Therefore, when an external force is applied to the power generation device, the entire power generation element can always be deformed, compared to a case where a part of the power generation element does not fit in the region corresponding to the space portion, It becomes possible to improve the power generation efficiency of the power generation device.

  According to the power generation device of the third aspect, a plurality of the power generation plates are arranged in parallel along a predetermined direction so that the power generation plate is in contact with the side surface on one of the side surfaces of one base portion. A plurality of first abutting means are provided on the side surface of each plate opposite to the side surface abutting against one base portion, and a part of the portion corresponding to each of the plurality of power generation plates in one base portion is provided. Are formed as the second abutment means, and space portions are formed in the other part of the portion corresponding to each of the plurality of power generation plates in one base portion. Since the number of installations can be increased, the amount of power generation can be easily increased.

  According to the power generation device of claim 4, since the aggregation region for consolidating the wiring connected to each of the power generation elements of at least two or more of the power generation plates is provided, a plurality of one base portion includes a plurality of regions. Even when the power generation plates are arranged in parallel, the wirings connected to the respective power generation plates can be collected, so that the wirings can be easily arranged.

  According to the power generation device of the fifth aspect, since at least a part of the plurality of power generation plates can be detachably attached to one base portion, the number of power generation plates installed can be adjusted according to the situation. Therefore, the power generation amount of the power generation device can be easily adjusted.

  According to the power generation device of the sixth aspect, the space portion is formed in a part of the portion of the one base portion adjacent to the side surface on the side opposite to the side surface on the first abutting means side. Since the other part of the concave portion in one of the bases adjacent to the side surface opposite to the side surface on the first contact means side is formed as the second contact means, without using a fixture or the like The power generation plate can be easily fixed to the concave portion, and the productivity of the power generation device can be improved.

  According to the power generation device of the seventh aspect, since one base portion is a circuit board electrically connected to the power generation plate, it is not necessary to separately provide a dedicated component as the second contact means. Therefore, it becomes possible to reduce the manufacturing cost of the power generation device as compared with the conventional device.

  According to the power generation device of the eighth aspect of the present invention, since the power generation plate further includes the deformation suppressing means for suppressing the pressure deformation of the power generation plate when the pressure deformation of the power generation plate reaches a predetermined amount, excessive pressure deformation of the power generation element. Can be suppressed, and cracking of the power generation element can be prevented.

  According to the power generation device of the ninth aspect, since the vibration plate is formed so that the thickness of the vibration plate is thicker than the thickness of the power generation element, the power generation plate of the power generation plate is compared with the power generation plate that does not include the vibration plate. The proof stress can be improved, and it is possible to further prevent cracking of the power generating element.

  According to the power generation device of claim 10, the power generation plate and one base portion are C1 ≧ B1, E−C1−D ≧ B2, E−C1−C2−D ≦ B2, C2 ≧ B2, and E−. Since it formed based on C2-D> = B1 and E-C1-C2-D <= B1, even when a power generation plate is provided in a recessed part, the whole power generating element can be deform | transformed reliably.

  According to the power generation device of the eleventh aspect, since the power generation plate and one base portion are formed based on C1 ≧ F1 and C2 ≧ F2, for example, the power generation plate is fixed to the base portion by a clasp or the like. Even in this case, the entire power generating element can be reliably deformed.

It is a perspective view which shows the electric power generation floor which concerns on Embodiment 1 of this invention. It is a perspective view which shows the state by which the housing | casing of the electric power generating apparatus shown in FIG. 1 was opened. FIG. 3 is a cross-sectional view taken along the line AA in FIG. 2 in a state where a housing of the power generation device shown in FIG. 2 is closed. FIG. 3 is a cross-sectional view taken along the line B-B in FIG. 2 in a state where a housing of the power generation device illustrated in FIG. 2 is closed. FIG. 4 is an enlarged view of a region C in FIG. 3. It is a perspective view which shows the structure of an electric power generation module. FIG. 7 is an exploded perspective view of FIG. 6. It is a figure which shows the detail of a base part and an electric power generation plate. It is a figure which shows the state which the electric power generating apparatus received and received the pressing force applied by the user who is walking. FIG. 6 is a partially broken perspective view showing a power generation device according to a second embodiment. It is DD sectional view taken on the line of FIG. It is an enlarged view of the area | region E in FIG. It is a figure which shows the detail of a structure of a base part and an electric power generation plate. It is a figure which shows the state which the electric power generating apparatus received and received the pressing force applied by the user who is walking. It is a perspective view which shows an example of a structure of the electric power generation module in the electric power generating apparatus which concerns on the modification of Embodiment 2. FIG. It is a perspective view which shows an example of a structure of the electric power generation module in the electric power generating apparatus which concerns on the modification of Embodiment 2. FIG. It is a figure which shows an example of a structure of the electric power generation module in the electric power generating apparatus which concerns on the modification of Embodiment 2. FIG. It is a figure which shows an example of a structure of the electric power generation module in the electric power generating apparatus which concerns on the modification of Embodiment 1. FIG. It is a figure which shows an example of a structure of the housing | casing and circuit board in the electric power generating apparatus which concerns on the modification of Embodiment 2. FIG.

  Hereinafter, an embodiment of a power generator according to the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited by these embodiments. In addition, the application object of the electric power generating apparatus which concerns on each embodiment is arbitrary, It can use for the instrument which produces electric power using the force (external force) applied from the outside. In the following, by applying to a power generation floor for pedestrians (hereinafter referred to as “power generation floor”), a mode of generating power using the pressing force when the foot of the user who is walking lands on the power generation floor is used. An explanation will be given as an example.

[Embodiment 1]
First, the first embodiment will be described. In this form, a plurality of power generation plates are provided on one base part.

(Constitution)
First, the configuration of the power generation floor will be described. FIG. 1 is a perspective view showing a power generation floor according to Embodiment 1 of the present invention. FIG. 2 is a perspective view showing a state in which the housing in the power generation device of FIG. 1 is opened. 3 is a cross-sectional view taken along line AA of FIG. 2 in a state where the housing of the power generation device shown in FIG. 2 is closed. 4 is a cross-sectional view taken along the line BB in FIG. 2 in a state where the housing of the power generation device shown in FIG. 2 is closed. FIG. 5 is an enlarged view of region C in FIG. In the following description, the X direction in FIG. 1 is the right direction of the power generator, the X ′ direction in FIG. 1 is the left direction of the power generator, the Y direction in FIG. 1 is the rear direction of the power generation floor, and the Y ′ direction in FIG. Is the forward direction of the power generation floor, the Z direction in FIG. 1 is the upper direction of the power generation floor, and the Z ′ direction in FIG. 3 is the lower direction of the power generation floor. As shown in FIG. 1, a power generation floor 1 is provided in a concave portion formed on the installation surface W. The power generation floor 1 includes a plurality of connecting parts 3 and a plurality of power generations inside a housing part 2. The apparatus 10 is provided.

(Configuration-housing part)
The accommodating portion 2 is a basic structure of the power generation floor 1 and is accommodating means for accommodating the connecting portion 3 and the power generation device 10. This accommodating part 2 is a substantially box-shaped body formed of, for example, a resin material or a metal material. The forming method of the accommodating portion 2 is arbitrary. For example, the front wall, the rear wall, the lower wall, the left wall, and the right wall are formed by integral molding, and the upper wall is formed by the integral molding. The method etc. which are formed separately from what was done are employ | adopted. In this case, for the planar shape of the top wall, for example, the front wall, the back wall, the left wall, and the right wall can be transmitted to the plurality of power generation devices 10 by the pressing force applied by the user who is walking. Are set to be substantially the same as or smaller than the inner edge shape of the annular body.

(Configuration-connecting part)
The plurality of connecting portions 3 are connecting means for connecting adjacent power generation apparatuses 10 to each other. Each of the plurality of connecting portions 3 is a substantially rod-shaped body formed of, for example, a resin material or a metal material, and is disposed between the adjacent power generation devices 10, respectively. It is connected with a fixture.

(Configuration-power generator)
The plurality of power generation devices 10 are devices that generate power using a pressing force applied by a walking user. The plurality of power generation apparatuses 10 are arranged substantially along the left-right direction and are arranged substantially along the front-rear direction. Here, with respect to the details of the configuration of each of the plurality of power generation apparatuses 10, the plurality of power generation apparatuses 10 are the same as each other. Therefore, in the following, one of the plurality of power generation apparatuses 10 illustrated in FIG. The power generation apparatus 10 will be described by paying attention to the power generation apparatus 10 shown in FIG. 2 (hereinafter referred to as “power generation apparatus 10”). That is, as shown in FIGS. 2 to 5, the power generation device 10 includes a housing 20, power generation plates 30 a to 30 p, and a circuit board (not shown) (hereinafter, the power generation plate). 30a to 30p are collectively referred to as “power generation plate 30” when it is not necessary to distinguish between them.

(Configuration-Power generation device-Housing)
The housing | casing 20 is a basic structure of the electric power generating apparatus 10, and is a protection means which protects the electric power generation plates 30a-30p and a circuit board from the outside. Specifically, as shown in FIGS. 2 to 5, the housing 20 is a substantially box-shaped body formed of, for example, an insulating material (specifically, a resin material such as hard rubber). The housing 20 is a substantially box-shaped base portion 21 having one side surface (for example, an upper side surface) opened, a base portion 21 that houses the power generation plates 30a to 30p and a circuit board, and the base portion. And a cover portion 22 that substantially covers the portion 21 from the open surface side.

  The base portion 21 includes a fixed plate 21a and a side plate 21b. The fixed plate 21a is a substantially rectangular plate-like body that is fixedly arranged with respect to the installation surface W, and at least a part of the upper surface or the lower surface thereof is a flat surface. As for the specific shape of the fixed plate 21a, for example, the planar shape of the fixed plate 21a is set to a substantially square shape of about 145 mm × 145 mm, and the thickness of the fixed plate 21a is set to about 5 mm. The side plate 21b is a substantially rectangular plate-like body disposed so as to be orthogonal to the four sides of the fixed plate 21a. As for the specific shape of the side plate 21b, for example, the side shape of the side plate 21b is set to a rectangular shape of about 145 mm × 3 mm, and the thickness of the side plate 21b is about 10 mm (in the second embodiment, about 3 mm). Is set).

  The cover part 22 includes a cover part main body 22a and a side plate 22b. The cover part main body 22a is a substantially rectangular plate-like body disposed at a position facing the fixed plate 21a of the base part 21, and at least a part of its upper and lower surfaces is a flat surface. As for the specific shape of the cover part 22, for example, the planar shape of the cover part 22 is set to a substantially square shape of about 145 mm × 145 mm, and the thickness of the cover part 22 is set to about 5 mm. The side plate 22b is a substantially rectangular plate-like body that is arranged so as to be orthogonal to each of the four sides of the cover body 22a and is in contact with the side plate 21b. As for the specific shape of the side plate 22b, for example, the side surface shape of the side plate 22b is set to a rectangular shape of about 145 mm × 3 mm, and the thickness of the side plate 22b is set to about 10 mm (Note that Embodiment 2). Then, it is set to about 3 mm).

(Configuration-Power generation device-Power generation plate)
The power generation plates 30a to 30p convert the pressing force applied by the walking user into electricity. As shown in FIGS. 2 to 5, the power generation plates 30a to 30p are arranged in parallel at predetermined intervals (for example, about 5 mm) on the upper surface of the base portion 21 in the housing 20 substantially along the left-right direction. They are arranged in parallel along the front-rear direction at a predetermined interval (for example, about 5 mm). Further, each of the power generation plates 30a to 30p includes a piezoelectric element 31 and a diaphragm 32.

(Configuration-Power generation device-Power generation plate-Piezoelectric element)
The piezoelectric element 31 is an element that generates electricity by being deformed by pressure. As shown in FIGS. 2 to 5, the piezoelectric element 31 is a thin plate-like body, and is formed of a piezoelectric ceramic such as barium titanate or zirconia, or a piezoelectric single crystal such as lithium tantalate (LiTaO 3). The specific shape of the piezoelectric element 31 is, for example, a substantially disk-like body in which the planar shape of the piezoelectric element 31 is about 15 mm in diameter and the thickness of the piezoelectric element 31 is about 0.3 mm. Has been.

  Here, as the piezoelectric element 31, or in place of the piezoelectric element 31, any material capable of generating power by an external force (including a force that causes distortion, bending, or compression) can be used. An ionic polymer metal composite (IPMC: Ionic Polymer-Metal Composite) in which metal (gold, etc.) is plated on both sides of a polymer film (gel), or an ion conductive polymer gel film (ICPF: Ionic Conducting Polymer Film) Alternatively, artificial muscles using these IPMC and ICPF can be used. This point is the same in other embodiments described later. Note that these piezoelectric elements 31 and arbitrary materials capable of generating power are collectively referred to as “power generating elements” as necessary.

  The piezoelectric element 31 is provided with a plus terminal and a minus terminal (illustration of these parts is omitted). The plus terminal and the minus terminal are output terminals for outputting the current generated in the piezoelectric element 31 to the outside. The plus terminal is attached to the lower surface of the piezoelectric element 31, and the minus terminal is attached to the upper surface of the piezoelectric element 31.

(Configuration-Power generation device-Power generation plate-Diaphragm)
The diaphragm 32 is a support that applies stress to the piezoelectric element 31 and also serves as a reinforcing material that reinforces the cracking strength of the piezoelectric element 31. As shown in FIGS. 2 to 5, the diaphragm 32 is a disk-shaped body made of a steel material having flexibility and durability, such as a stainless steel thin plate. Further, the diaphragm 32 is arranged so that one side surface of the diaphragm 32 is in contact with the piezoelectric element 31. The diaphragm 32 is bonded to the piezoelectric element 31 with an adhesive or the like.

  Here, regarding the specific shape of the diaphragm 32, for example, the planar shape of the piezoelectric element 31 is set such that the planar shape of the diaphragm 32 is larger than the planar shape of the piezoelectric element 31 (or the piezoelectric element 31. It may be set to be substantially the same as the planar shape of the above), specifically, it is set to a substantially circular shape having a diameter of about 23 mm. Further, the thickness of the diaphragm 32 is preferably set to be greater than the thickness of the piezoelectric element 31 in order to prevent the piezoelectric element 31 from being cracked. It is set to about 5 mm.

  Further, regarding the positional relationship between the piezoelectric element 31 and the diaphragm 32, for example, as will be described later, the power generation plate 30 so that the entire outer edge portion of the power generation plate 30 contacts a second contact portion 52 described later. Is supported, the piezoelectric element 31 is disposed at a position where the amount of deformation at the plane center position of the diaphragm 32 is the largest. Specifically, the center of the piezoelectric element 31 and the center of the diaphragm 32 are arranged. Are arranged at the same position substantially along the vertical direction. The details of the above-described power generation plate 30 will be described later.

(Configuration-Power generation device-Circuit board)
The circuit board is a board on which an electric circuit (not shown) for realizing various functions of the power generation apparatus 10 is mounted. This circuit board is configured using, for example, a known circuit board, and is disposed on the upper surface of the base portion 21 of the housing 20. In addition, a plus terminal, a minus terminal, a rectifying unit, and an output terminal are mounted on the circuit board (illustration of these parts is omitted).

  The plus terminal is an input terminal for inputting the current output from the plus terminal of the piezoelectric element 31 in the power generation plate 30. The plus terminal is provided in the vicinity of the outer edge of each of the power generation plates 30 a to 30 p on the circuit board, and is electrically connected to the plus terminal of the piezoelectric element 31 on the power generation plate 30 via the wiring 33 connected to the power generation plate 30. It is connected.

  The minus terminal is an input terminal for inputting the current output from the plus terminal of the piezoelectric element 31 in the power generation plate 30. The minus terminal is provided at a position near the outer edge of each of the power generation plates 30 a to 30 p on the circuit board, and is electrically connected to the negative terminal of the piezoelectric element 31 on the power generation plate 30 via the wiring 33 connected to the power generation plate 30. It is connected.

  The rectifying unit may convert a current (specifically, an alternating current) acquired through the negative terminal and the positive terminal into a direct current, or connect a cathode or an anode of a direct current power source to whichever. It is the rectification means for adjusting. This rectification unit is configured using, for example, a known bridge circuit having a plurality of diodes, and has a negative terminal and a positive terminal provided in positions corresponding to each of the power generation plates 30a to 30p on the circuit board, and wiring ( (Not shown).

  The output terminal is a terminal for outputting the current output from the rectification unit to an external device (not shown), and is electrically connected to the rectification unit via a wiring (not shown). The details of this circuit board will be described later.

(Details of housing and power generation module)
Next, with respect to the details of the configuration of the housing 20 according to the first embodiment and the power generation module 80 described later, the following measures are taken.

(About the case and the power generation module-the structure of the cover of the case)
First, regarding the configuration of the housing 20, for example, as shown in FIGS. 2 to 5, the cover portion 22 of the housing 20 is provided with a plurality of first contact portions 40 and protective pillars 41. . A method for forming the first contact portion 40 and the protection column 41 is arbitrary. For example, a method of forming the cover portion 22 by integrally molding the second contact portion 52 and the protection column 41, or the like. Is adopted.

(About the housing and the power generation module-configuration of the cover portion of the housing-first contact portion)
The first contact portion 40 is a first contact means for contacting the power generation plate 30. As shown in FIGS. 3 to 5, the first contact portion 40 is formed of, for example, a substantially columnar body, and each of the power generation plates 30 a to 30 p (specifically, the piezoelectric element of each power generation plate 30). 31). Here, the specific shape of the first contact portion 40 is arbitrary, but the planar shape of the first contact portion 40 is set smaller than the planar shape of the piezoelectric element 31, for example. Specifically, it is set in a substantially circular shape having a diameter of about 16 mm. Further, the thickness of the first contact portion 40 is set to be thicker than, for example, the thickness of a protection pillar described later, and specifically, is set to about 2 mm. Moreover, although the formation method of this 1st contact part 40 is arbitrary, the method etc. which are formed by integrally forming the cover part 22 and the 1st contact part 40, etc. are employ | adopted, for example.

  With such a configuration, the first contact portion 40 can be easily attached as compared with the case where the cover portion 22 and the first contact portion 40 are formed separately. It becomes possible to improve the property.

(Details of case and power generation module-configuration of cover part of case-protection pillar)
The protection column 41 is a deformation suppressing unit that suppresses the pressure deformation of the power generation plate 30 when the pressure deformation of the power generation plate 30 reaches a predetermined amount (for example, the first deformation amount). The protection column 41 is formed of a substantially columnar body and is disposed between the first contact portions 40. More specifically, among the plurality of protective pillars 41, the protective pillars 41 (in FIG. 2, the first abutting part 40 and the power generation plate 30i that face the power generation plate 30e in FIG. The protective column 41) disposed between the first abutting portion 40 and the first abutting portion 40 is disposed at a position facing a receiving hole 54 of the base portion 21, which will be described later. Other protective pillars 41 (hereinafter referred to as “other protective pillars 41”) other than the protective pillars 41 arranged in the above are disposed at positions facing the base portion 21.

  Here, the specific shape of the protective column 41 is set to a shape that can stably support the cover portion 22 of the housing 20 when a pressing force is applied to the power generation device 10, for example. Yes. Specifically, the shape of the protective column 41 arranged at the substantially central position of the cover portion 22 is set to a substantially cylindrical body having a diameter of about 3 mm and a thickness of about 4 mm. Moreover, about the shape of the other protection pillar 41, it is about 3 mm in diameter, and the thickness is set with the substantially cylindrical body about 2 mm.

  Further, regarding the arrangement relationship between the protection column 41 and the base portion 21, when the pressing force is applied to the power generation device 10, the protection column 41 and the power generation plate 30 can be deformed to the first deformation amount. A base portion 21 is disposed. Specifically, with respect to the arrangement relationship between the protective column 41 and the base portion 21 that are arranged at substantially the center position of the cover portion 22, the protective column 41 and the later-described column are in a state where no pressing force is applied to the power generation device 10. The protective column 41 and the base portion 21 are arranged such that the distance between the base portion 21 and the bottom surface of the accommodation hole 54 is a distance corresponding to the first deformation amount. Further, regarding the arrangement relationship between the other protective pillars 41 and the base portion 21, the distance between the protective pillar 41 and the base portion 21 is the first deformation in a state where no pressing force is applied to the power generation device 10. The protection pillar 41 and the base portion 21 are arranged so as to have a distance corresponding to the amount.

  With such a configuration, excessive pressing deformation of the piezoelectric element 31 can be suppressed, and cracking or the like of the piezoelectric element 31 can be prevented.

(Details of casing and power generation module-configuration of base section of casing)
As for the configuration of the base portion 21 of the housing 20, for example, as shown in FIGS. 2 to 5, the base portion 21 includes a plurality of concave portions 51, a plurality of second contact portions 52, and a plurality of portions. , And a single accommodation hole 54 are provided.

(Details of housing and power generation module-configuration of base portion of housing-recessed portion)
The recess 51 is a space that can receive the power generation plate 30. The concave portion 51 is formed on the upper surface of the base portion 21 and in a portion corresponding to each of the power generation plates 30a to 30p. Here, the specific shape of the concave portion 51 is arbitrary, but the planar shape of the concave portion 51 is set to be larger than, for example, the planar shape of the power generation plate 30. It is set in a substantially circular shape of about 25 mm. The depth of the recess 51 is set to be substantially the same as the thickness of the diaphragm 32 of the power generation plate 30 (or may be set longer or shorter than the thickness of the diaphragm 32 of the power generation plate 30). More specifically, it is set to about 1 mm.

(Details of housing and power generation module-configuration of base portion of housing-second contact portion)
The second contact portion 52 is second contact means for contacting the base portion 21. The second contact portion 52 is formed in a part of a portion of the base portion 21 adjacent to the side surface opposite to the side surface on the first contact portion 40 side of each recess 51. The method of forming the second contact portion 52 is arbitrary. For example, a method of forming the base portion 21 and the second contact portion 52 by integral molding is employed.

  Further, the second contact portion 52 includes a space portion 55. The space portion 55 is configured so that, when the power generation plate 30 is pressed toward the second contact portion 52 described later, the power generation plate 30 can be pressed and deformed to at least the first deformation amount. 30 is a space that allows entry. Here, the “first deformation amount” means a deformation amount at which a desired power generation amount is obtained in the piezoelectric element 31 of the power generation plate 30. In the first embodiment, the increase amount of the voltage in the piezoelectric element 31 is compared. The deformation amount (for example, about 1 mm) corresponding to the target high range will be described as the first deformation amount. The space portion 55 is formed in another part of the base portion 21 adjacent to the side surface opposite to the side surface on the first contact portion 40 side of each recess 51.

  Here, the specific shape of the space portion 55 is arbitrary, but the planar shape of the space portion 55 is set to be smaller than the planar shape of the power generation plate 30, for example. It is set in a substantially circular shape with a diameter of about 20 mm. In addition, the thickness of the space 55 is set to a thickness at which at least the power generation plate 30 can be deformed to the first deformation amount in the Z ′ direction, and specifically set to about 2 mm. Yes. Moreover, about the formation method of this space part 55, it forms by providing the recessed part which does not penetrate the said base part 21 in the other part of the part corresponding to each of the electric power generation plates 30a-30p in the base part 21, for example. The method etc. are adopted.

  As for the arrangement of the space portion 55, specifically, the space portion 55 is arranged so that the entire outer edge portion of the power generation plate 30 contacts the second contact portion 52. Specifically, the space is arranged such that the center of the side surface of the recess 51 opposite to the side surface on the first contact portion 40 side and the center of the space portion 55 are located at the same position along the vertical direction. The part 55 is arranged. In such an arrangement, the second contact portion 52 is arranged in a portion from the portion corresponding to the outer edge portion of the concave portion 51 in the base portion 21 to the outer edge portion of the space portion 55.

  Thus, since the concave portion 51 and the second contact portion 52 are provided in the base portion 21, the entire outer edge portion of the diaphragm 32 in the power generation plate 30 is in contact with the second contact portion 52. In this state, since the power generation plate 30 can be pressed and deformed at least to the first deformation amount, the power generation plate 30 is unlikely to be twisted. In addition, the power generation plate 30 can be simply fixed to the recess 51 without using a fixture or the like, and the manufacturability of the power generation apparatus 10 can be improved.

(Details of case and power generation module-configuration of base part of case-aggregation area)
The aggregation area 53 is an area for collecting the wiring 33 connected to each of the piezoelectric elements 31 of at least two or more power generation plates 30. This aggregation area | region 53 is arrange | positioned in the side surface by the side of the electric power generation plates 30a-30p in the base part 21, and specifically, between the electric power generation plates 30a-30d and the electric power generation plates 30e-30h, and electric power generation plates 30e-30h. Between the power generation plates 30i to 30l and between the power generation plates 30i to 30l and the power generation plates 30m to 30p, the base portion 21 is disposed substantially along the left-right direction from the left end to the right end. ing. In addition, about the installation of this aggregation area | region 53, as above-mentioned, although demonstrated that it was installed in the base part 21 of the housing | casing 20, it is not restricted to this, For example, it installs in the cover part 22 of the housing | casing 20. May be.

  With such a configuration, even when the power generation plates 30a to 30p are arranged in parallel on the base portion 21, the wirings 33 connected to each of the plurality of power generation plates 30 can be collected. It can be done easily.

(Details of case and power generation module-configuration of base part of case-accommodation hole)
The accommodation hole 54 is a hole for accommodating the protection column 41 arranged at a substantially central position of the cover portion 22. The accommodation hole 54 is disposed on the side surface of the base portion 21 on the side of the power generation plates 30a to 30p, and specifically, between the power generation plate 30f and the power generation plate 30g, It arrange | positions in the position facing the protection pillar 41 arrange | positioned in the approximate center position. Here, with regard to the specific shape of the accommodation hole 54, for example, the protective column 41 disposed at a substantially central position of the cover portion 22 can be accommodated, and the power generation plate 30 is pressed and deformed to the first deformation amount. For example, it is a substantially circular shape having a diameter of about 3.5 mm and a depth of about 2 mm.

  With such a configuration, it is possible to suppress the cover portion 22 from being displaced substantially along the front-rear direction or the left-right direction with respect to the base portion 21 while allowing pressure deformation to the first deformation amount of the power generation plate 30. The configuration including the power generation plate 30, the first contact portion 40 in the cover portion 22, the space portion 55 and the second contact portion 52 in the base portion 21 is hereinafter collectively referred to as “power generation module 60”. To do.

(Details of housing and power generation module-configuration of power generation module-arrangement of first contact portion and second contact portion)
Next, the configuration of the power generation module 80 will be described. FIG. 6 is a perspective view showing the configuration of the power generation module 80. FIG. 7 is an exploded perspective view of FIG. First, regarding the arrangement of the first contact portion 40 and the second contact portion 52 in the configuration of the power generation module 80, for example, when no pressing force is applied to the power generation device 10, the power generation plate 30. Is brought into contact with the first abutting portion 40 and the second abutting portion 52, so that a part of the power generation plate 30 enters the space portion 55, so that the pressure deformation of the power generation plate 30 becomes the second deformation amount. When a pressing force is applied to the power generation device 10, a part of the power generation plate 30 enters the space portion 55 as the first abutting portion 40 moves, thereby pressing the power generation plate 30. The first contact portion 40 and the second contact portion 52 are disposed so that the first deformation amount is reached. Here, the “second deformation amount” means a deformation amount smaller than the first deformation amount, and in the first embodiment, it corresponds to a range where the increase amount of the voltage in the piezoelectric element 31 of the power generation plate 30 is relatively low. The amount of deformation to be performed (for example, about 0.2 mm) will be described as the second amount of deformation.

  Specifically, as shown in FIGS. 6 and 7, the first contact portion 40 is located at the same position as the center of the piezoelectric element 31 in the vertical direction. A contact portion 40 is disposed. Further, the second contact portion 52 is positioned so that the center of the second contact portion 52 (specifically, the center of the space portion 55) is located at the same position along the vertical direction of the center of the piezoelectric element 31. Is arranged. Further, in a state where no pressing force is applied to the power generation device 10, the distance between the first contact portion 40 and the second contact portion 52 pushes and deforms the power generation plate 30 to the second deformation amount. The first contact portion 40 and the second contact portion 52 are arranged so that the distance can be adjusted. In this case, as a method of pressing and deforming the power generation plate 30 to the second deformation amount, for example, a method of pressing and deforming the power generation plate 30 to the second deformation amount by the weight of the cover portion 22 and the base portion 21 of the housing 20, etc. Is adopted. Specifically, the cover portion 22 and the base portion 21 are formed in a shape that can obtain a weight capable of pressing and deforming the power generation plate 30 to the second deformation amount, or the cover portion or the base portion 21. A predetermined amount of weight (not shown) is attached.

  With such an arrangement, the piezoelectric element 31 is pressed and deformed in a state where no pressing force is applied to the power generation device 10, so that the pressing force is not applied to the power generation device 10 compared to the conventional device. By applying the pressure, the deformation amount of the piezoelectric element 31 until the pressing deformation of the power generation plate 30 reaches the first deformation amount can be reduced.

(Details of casing and power generation module-configuration of base section of casing and power generation plate)
Next, the structure of the base part 21 of the housing | casing 20 and the electric power generation plate 30 is demonstrated. FIG. 8 is a diagram showing details of the configuration of the base portion 21 and the power generation plate 30. Regarding the configurations of the base portion 21 and the power generation plate 30, for example, in a state where the power generation plate 30 is in contact with the second contact portion 52, the piezoelectric element 31 is always within the region corresponding to the space portion 55. In addition, a base portion 21 and a power generation plate 30 are formed.

  Specifically, as shown in FIG. 8A, when the power generation plate 30 is in contact with the second contact portion 52, the length from the left end portion of the recess 51 to the left end portion of the diaphragm 32. A1, length A2 from the right end of the recess 51 to the right end of the diaphragm 32, length B1 from the left end of the recess 51 to the left end of the space 55, and the right end of the space 55 from the right end of the recess 51 Length B2, length C1 from the left end of the diaphragm 32 to the left end of the piezoelectric element 31, length C2 from the right end of the diaphragm 32 to the right end of the piezoelectric element 31, and the left end of the piezoelectric element 31 When the length D is from the left end of the recess 51 to the right end of the recess 51 and the length E is from the left end of the recess 51 to the right end of the recess 51, the base portion 21 and the power generation plate 30 are based on the following formula (1) to the following formula (6). Is formed.

    C1 ≧ B1 (1)

    E-C1-D ≧ B2 (2)

    E-C1-C2-D ≦ B2 (3)

    C2 ≧ B2 (4)

    E-C2-D ≧ B1 (5)

    E-C1-C2-D ≦ B1 (6)

  More specifically, as shown in FIG. 8B, in a state where the power generation plate 30 is in contact with the left end portion of the recess 51, the piezoelectric element 31 is accommodated in the region corresponding to the space portion 55. In order to satisfy the conditions, the conditions of the expressions (1) to (3) must be satisfied. Further, as shown in FIG. 8C, in the state where the power generation plate 30 is in contact with the right end portion of the recess 51, in order to fit the piezoelectric element 31 in the region corresponding to the space portion 55, the formula It is necessary to satisfy the conditions of (4) to (6). Considering these facts, in order to always keep the piezoelectric element 31 in the region corresponding to the space portion 55, the base portion 21 and the power generation plate 30 are based on the conditions of the equations (1) to (6). Need to be formed.

  For example, the length A1 from the left end of the recess 51 to the left end of the diaphragm 32 is 1 mm, the length A2 from the right end of the recess 51 to the right end of the diaphragm 32 is 1 mm, and the space from the left end of the recess 51 to the space The length B1 from the left end of 55 to 2.5 mm, the length B2 from the right end of the recess 51 to the right end of the space 55 = 2.5 mm, from the left end of the diaphragm 32 to the left end of the piezoelectric element 31 Length C1 = 4 mm, length C2 = 4 mm from the right end of the diaphragm 32 to the right end of the piezoelectric element 31, length D = 15 mm from the left end of the piezoelectric element 31 to the right end, left end of the recess 51 When the length E to the right end of the recess 51 is E = 25 mm, C1 (= 4 mm) ≧ B1 (= 2.5 mm), E-C1-D (= 25 mm−4 mm−15 mm = 5 mm) ≧ B2 (= 2.5 mm), E-C1-C2-D (= 2 mm-4mm-4mm-15mm = 2mm) ≦ B2 (= 2.5mm), C2 (= 4mm) ≧ B2 (= 2.5mm), E-C2-D (= 25mm-4mm-15mm = 5mm) ≧ B1 (= 2.5 mm), E-C 1 -C 2 -D (= 25 mm−4 mm−4 mm−15 mm = 2 mm) ≦ B 1 (= 2.5 mm), and all the conditions of Formula (1) to Formula (6) are satisfied. Therefore, the piezoelectric element 31 is always stored in the region corresponding to the space 55.

  With such a configuration, the entire piezoelectric element 31 can be constantly deformed when a pressing force is applied to the power generation apparatus 10, so that a part of the piezoelectric element 31 is within the region corresponding to the space portion 55. It is possible to improve the power generation efficiency of the power generation device 10 as compared with the case where the power generation is not performed.

(About the function of the power generator)
The function of the power generation apparatus 10 configured as described above is as follows. FIG. 9 is a diagram illustrating a state in which the power generation apparatus 10 is deformed by receiving a pressing force applied by a user who is walking.

  As shown in FIGS. 3 and 5, when the power generation device 10 does not receive a pressing force applied by a walking user, each of the power generation plates 30a to 30p corresponds to the first contact portion 40 and By making contact with the second contact portion 52, a part of each of the power generation plates 30 a to 30 p enters the corresponding space portion 55, so that the pressure deformation of the power generation plates 30 a to 30 p becomes the second deformation amount. 3 (deformation of the power generation plates 30e to 30h is shown in FIG. 3, the deformation of the power generation plates 30a to 30d and 30i to 30p is also modified in the same manner as in FIG. 3. Note that the same applies to FIG. ).

  In this case, due to the above-described pressing deformation of the power generation plates 30a to 30p, a cathode current is generated on the upper surfaces of the power generation plates 30a to 30p, and an anode current is generated on the lower surfaces of the power generation plates 30a to 30p. By generating electricity, a voltage is generated in each of the power generation plates 30a to 30p. Thus, when a voltage is generated in each of the power generation plates 30a to 30p, an anode current flows to the circuit board via the wiring 33 connected to the plus terminal of each piezoelectric element 31 of the power generation plates 30a to 30p. , And a cathode current flows to the circuit board through the wiring 33 connected to the negative terminal of the piezoelectric element 31. The current flowing through the circuit board 50 in this way is converted into a direct current by the rectifier, and the converted current is output to an external device via the output terminal.

  Next, as illustrated in FIG. 9, when the power generation device 10 receives a pressing force applied by a user who is walking, the first contact portion is formed by the cover portion 22 of the housing 20 being pressed and deformed. 40 moves substantially along the Z ′ direction, and a part of each of the power generation plates 30a to 30p enters the corresponding space 55 along with the movement of the first contact portion 40, whereby the power generation plate 30a. While the pressing deformation of ˜30p reaches the first deformation amount, the cover portion 22 of the housing 20 comes into contact with the protective column 41.

  In this case, a large voltage is generated in each of the power generation plates 30a to 30p as compared with the case where the pressing deformation of the power generation plates 30a to 30p is the second deformation amount. Then, the anode current flows to the circuit board via the wiring 33 connected to the plus terminal of each piezoelectric element 31 of the power generation plates 30a to 30p, and the wiring connected to the minus terminal of the piezoelectric element 31. After the cathode current flows to the circuit board via 33 and the current flowing to the circuit board is converted into a direct current by the rectifier, the converted current is output to an external device via the output terminal.

  As described above, the piezoelectric element 31 is pressed and deformed in a state in which no pressing force is applied to the power generation device 10, whereby a power generation plate is obtained by applying a pressing force from a state in which no pressing force is applied to the power generation device 10. Since the deformation amount of the piezoelectric element 31 until the pressure deformation of 30 reaches the first deformation amount can be reduced, the power generation efficiency per unit deformation amount in the piezoelectric element 31 is improved as compared with the conventional device. It becomes possible to make it.

(effect)
As described above, according to the first embodiment, when the pressing force is not applied to the power generation device 10, the power generation plate 30 is in contact with the first contact portion 40 and the second contact portion 52. When a part of the power generation plate 30 enters the space portion 55, the pressing deformation of the power generation plate 30 reaches the second deformation amount, and when a pressing force is applied to the power generation device 10, the first contact is made. As the portion 40 moves, a part of the power generation plate 30 enters the space portion 55, so that the pressing deformation of the power generation plate 30 reaches the first deformation amount. Since the contact portion 52 is disposed, the piezoelectric element 31 is pressed and deformed in a state where no pressing force is applied to the power generation device 10, thereby applying a pressing force from a state where no pressing force is applied to the power generation device 10. By being Since the deformation amount of the piezoelectric element 31 until the pressing deformation of the electric plate 30 reaches the first deformation amount can be reduced, the power generation efficiency per unit deformation amount in the piezoelectric element 31 compared to the conventional device. Can be improved.

  Further, since at least the power generation plate 30 is formed so that the piezoelectric element 31 is always within the region corresponding to the space portion 55 in a state where the power generation plate 30 is in contact with the second contact portion 52, the power generation plate 30 When the pressing force is applied to the device 10, the entire piezoelectric element 31 can be constantly deformed, and compared with a case where a part of the piezoelectric element 31 is not within the region corresponding to the space 55. The power generation efficiency of the device 10 can be improved.

  Further, on one of the side surfaces of one base portion 21, a plurality of the power generation plates 30 are arranged in parallel along a predetermined direction so that the power generation plate 30 comes into contact with the side surface, and one power generation plate 30 has one A plurality of first contact portions 40 are provided on the side surface opposite to the side surface that contacts the base portion 21, respectively, and a part of a portion corresponding to each of the plurality of power generation plates 30 in one base portion 21 is provided. Since the space portions 55 are formed in the other part of the portion corresponding to each of the plurality of power generation plates 30 in one base portion 21 and formed as the second contact portions 52, the power generation can be performed with a simple configuration. Since the number of installed plates 30 can be increased, the amount of power generation can be easily increased.

  Moreover, since the aggregation area | region for consolidating the wiring 33 connected with each of the piezoelectric element 31 of the at least 2 or more power generation plate 30 was provided, the several power generation plate 30 was arranged in parallel by the one base part 21. Even in this case, since the wirings 33 connected to the respective power generation plates 30 can be collected, the wirings 33 can be easily arranged.

  Further, a space portion 55 is formed in a part of a portion adjacent to the side surface on the side opposite to the side surface on the first contact portion 40 side of each concave portion 51 in one base portion 21. Since another part of the portion adjacent to the side surface of the recess 51 opposite to the side surface on the first contact portion 40 side is formed as the second contact portion 52, power generation can be performed without using a fixture or the like. The plate 30 can be easily fixed to the recess 51, and the productivity of the power generation apparatus 10 can be improved.

  In addition, since the protective column 41 that suppresses the deformation of the power generation plate 30 when the deformation of the power generation plate 30 reaches a predetermined amount is provided, excessive pressing deformation of the piezoelectric element 31 can be suppressed. It is possible to prevent cracks and the like.

  Further, since the diaphragm 32 is formed so that the thickness of the diaphragm 32 is larger than the thickness of the piezoelectric element 31, the proof stress of the power generation plate 30 is improved compared to the power generation plate 30 that does not include the diaphragm 32. Therefore, it is possible to further prevent the piezoelectric element 31 from cracking.

  Further, the base portion 21 and the power generation plate 30 are connected to C1 ≧ B1, E-C1-D ≧ B2, E-C1-C2-D ≦ B2, C2 ≧ B2, E-C2-D ≧ B1, E-C1-C2. Since it formed based on -D <= B1, even when the electric power generation plate 30 is provided in the recessed part 51, the whole piezoelectric element 31 can be deform | transformed reliably.

[Embodiment 2]
Next, a second embodiment will be described. In this form, the base part is a circuit board. In addition, about the component similar to Embodiment 1, the same code | symbol or name as used in Embodiment 1 is attached | subjected as needed, and the description is abbreviate | omitted.

(Constitution)
First, the configuration of the power generation device according to Embodiment 2 will be described. FIG. 10 is a partially broken perspective view showing the power generation device according to the second embodiment. 11 is a cross-sectional view taken along the line DD in FIG. FIG. 12 is an enlarged view of region E in FIG. As shown in FIGS. 10 to 12, the power generation device 110 according to the second embodiment has sixteen power generation plates 30 (specifically, the number of installed power generation plates 30 relative to the components of the power generation device 10 according to the first embodiment) 4 bodies arranged in the left / right direction × 4 bodies arranged in the front / rear direction) to 9 bodies (specifically, 3 bodies arranged in the right direction × 3 bodies arranged in the front / rear direction) (hereinafter referred to as power generation plates 30a to 30i). ), The protective column 41 and the recess 51 are omitted, and a central spacer 60 is added. In addition, the following devices are also applied to the configuration of the housing 20, the configuration of the circuit board 70, and the configuration of the piezoelectric element 31.

(Configuration-Chassis configuration)
About the structure of the housing | casing 20, as shown in FIGS. 10-12, the housing | casing 20 is formed with the metal material etc. by which the insulation process was carried out. The cover portion 22 of the housing 20 is formed separately from the first contact portion 40, and the base portion 21 of the housing 20 is formed separately from the second contact portion 52. Yes.

  Here, the cover part 22 is a substantially rectangular plate-like body disposed so as to be movable with respect to the base part 21, and a part of the upper surface and the lower surface is a flat surface. Further, in each position corresponding to the side plate 21b of the base portion 21 in the cover portion 22, a groove portion 22c opened on the lower surface is formed, and the upper end portion of the side plate 21b is fitted to the groove portion 22c so as to be movable up and down. ing. In addition, an elastic body (not shown) is disposed in the groove 22c. This elastic body is an adjusting means for adjusting the amount of vertical movement (for example, about 1 mm) of the cover portion 22 with respect to the pressing force applied by the user who is walking, and after the pressing force is removed, It is a return means for pushing up and returning the portion 22 to the uppermost position, and is formed of a flexible material such as rubber.

  With such a configuration, the structure can be simplified compared to the case of Embodiment 1, and the manufacturability of the case 20 can be improved.

(Configuration-center spacer)
The center spacer 60 is a spacer for transmitting the pressing force of the cover portion 22 of the housing 20 to the power generation plate 30. As shown in FIGS. 10 to 12, the center spacer 60 is formed of, for example, an insulating metal material, and is disposed between the cover portion 22 and the power generation plate 30. The center spacer 60 includes a center spacer body 61 and a plurality of first contact portions 40. The center spacer 60 can be formed by any method. For example, a method of forming the center spacer main body 61 and the first contact portion 40 by integral molding is employed.

(Configuration-Center spacer-Center spacer body)
The center spacer body 61 is a basic structure of the center spacer 60 and supports the first contact portion 40. As shown in FIGS. 10 to 12, the center spacer body 61 is formed of, for example, a substantially flat plate-like body. Here, the specific shape of the central spacer body 61 is arbitrary, but the planar shape of the central spacer body 61 is set, for example, to be similar to the planar shape of the cover portion 22. Is set to a substantially square shape of about 130 mm × 130 mm. Further, the thickness of the central spacer body 61 is set to be substantially the same as the thickness of the piezoelectric element 31 of the power generation plate 30 (or thicker than the thickness of the piezoelectric element 31 of the power generation plate 30 or It may be set thin), specifically, it is set to about 0.3 mm. Further, the central spacer body 61 is arranged so that the upper surface of the central spacer body 61 is in contact with the lower surface of the cover portion 22. The center spacer body 61 is fixed to the cover portion 22 with an adhesive, a fixture, or the like.

  The center spacer body 61 is provided with a plurality of wiring recesses 61a. The wiring recess 61 a is a space for accommodating an extra length portion of the wiring 33 connected to the power generation plate 30. For example, the wiring recess 61 a is provided in the vicinity of the connection position between each power generation plate 30 and the wiring 33 in the center spacer body 61. Is formed.

(Configuration-center spacer-first contact part)
The plurality of first abutting portions 40 are respectively disposed at positions facing each of the power generation plates 30a to 30i in the central spacer main body 61. Specifically, the upper surfaces (specifically, the power generation plates 30a to 30i) Specifically, they are arranged so as to be in contact with the piezoelectric elements 31) of the respective power generation plates 30. Further, the planar shape of the first contact portion 40 is set to be smaller than the planar shape of the piezoelectric element 31, for example, and is specifically set to a substantially circular shape having a diameter of about 5 mm.

  With such a configuration, for example, the central spacer 60 can be customized and installed according to the number and shape of the power generation plates 30, so that it can meet various needs of users compared to the power generation apparatus 10 of the first embodiment. The production of the corresponding power generation device 110 becomes easy.

(Configuration-circuit board configuration)
Regarding the configuration of the circuit board 70, as shown in FIGS. 10 to 12, the circuit board 70 is disposed on the upper surface of the base portion 21 of the housing 20 so as to contact the lower surfaces of the power generation plates 30 a to 30 i. ing. Here, the specific shape of the circuit board 70 is arbitrary, but the planar shape of the circuit board 70 is set to be substantially the same as the planar shape of the central spacer body 61, for example. It is set to a substantially square shape of about 130 mm × 130 mm. The thickness of the circuit board 70 is set to be equal to or greater than the thickness corresponding to the first deformation amount of the power generation plate 30, for example, specifically about 2 mm.

  The circuit board 70 is provided with a plurality of space portions 55, second contact portions 52, an aggregation region 53, and clasps 71.

  The space portion 55 is formed in a part of a portion corresponding to each of the power generation plates 30a to 30i in the circuit board 70, and the center of the power generation plate 30 and the center of the space portion 55 are substantially the same along the vertical direction. It is arranged to be located. For example, a method of forming the space 55 by providing a through hole in a part of a portion of the circuit board 70 corresponding to each of the power generation plates 30a to 30i is employed.

  The second contact portion 52 is formed on each of the other portions of the circuit board 70 corresponding to each of the power generation plates 30a to 30i, and the circuit board 70 corresponds to the outer edge portion of the power generation plate 30. To the outer edge portion of the space 55.

  The aggregation region 53 is configured using, for example, a known printed wiring board. In addition, the aggregation region 53 is disposed on the side surface of the circuit board 70 on the power generation plates 30a to 30i side. Specifically, the power generation plate 30d is formed between the power generation plates 30a to 30c and the power generation plates 30d to 30f. ˜30f and the power generation plates 30g˜30i are disposed substantially along the left-right direction from the position near the left end of the circuit board 70 to the position near the right end. That is, in the second embodiment, the power transmission function similar to the configuration using the aggregation region 53 and the wiring 33 as in the first embodiment is achieved using the aggregation region 53.

  The clasp 71 is a connecting means that allows each of the power generation plates 30 a to 30 i to be detachably attached to the circuit board 70 and electrically and mechanically connects the power generation plate 30 and the circuit board 70. The clasp 71 is configured using, for example, a known clip having electrical conductivity, and a plurality of clasps 71 are disposed in the vicinity of the outer edge of each of the power generation plates 30a to 30i on the circuit board 70 (specifically, at predetermined intervals). Are spaced apart from each other) and are fixed by soldering or the like.

  Thus, since the circuit board 70 is provided with the second contact portion 52, it is not necessary to separately provide a dedicated component as the second contact portion 52. Therefore, the power generation device 110 is compared with the conventional device. The manufacturing cost can be reduced. Further, by providing the clasp 71 on the circuit board 70, each of the power generation plates 30a to 30i can be detachably attached, and the number of power generation plates 30a to 30i can be adjusted according to the situation. The circuit board 70 described above corresponds to a “base portion” in the claims.

(Configuration-Configuration of Base Unit 21 and Power Generation Plate 30)
FIG. 13 is a diagram showing details of the configuration of the base portion 21 and the power generation plate 30. FIG. 14 is a diagram illustrating a state in which the power generation device 110 is deformed by receiving a pressing force applied by a user who is walking. Specifically, with respect to the configurations of the base portion 21 and the power generation plate 30, as shown in FIG. 13, when the power generation plate is in contact with the second contact portion 52, a piezoelectric element is applied from the left end portion of the diaphragm 32. Length C1 from the left end of the element 31, length C2 from the right end of the diaphragm 32 to the right end of the piezoelectric element 31, length D from the left end of the piezoelectric element 31 to the right end, left end of the diaphragm 32 Length F1 from the center to the left end of the space 55, length F2 from the right end of the diaphragm 32 to the right end of the space 55, and length from the left end of the diaphragm 32 to the right end of the diaphragm 32 If it is set to G, the base part 21 and the electric power generation plate 30 are formed based on following formula (7) and following formula (8).

    C1 ≧ F1 (7)

  C2 ≧ F2 (8)

  For example, the length C1 from the left end of the diaphragm 32 to the left end of the piezoelectric element 31 is 4 mm, the length C2 from the right end of the diaphragm 32 to the right end of the piezoelectric element 31 is 4 mm, and the left end of the piezoelectric element 31 To the right end from the left end of the diaphragm 32 to the left end of the space 55 F1 = 1.5 mm, the length from the right end of the diaphragm 32 to the right end of the space 55 When F2 = 1.5 mm and the length G from the left end of the diaphragm 32 to the right end of the diaphragm 32 is 20 mm, C1 (= 4 mm) ≧ F1 (= 1.5 mm), C2 ( = 4 mm) ≧ F2 (= 1.5 mm), and all the conditions of Expressions (7) and (8) are satisfied, so that the piezoelectric element 31 is always accommodated in the region corresponding to the space 55.

  With such a configuration, as shown in FIG. 14, as in the first embodiment, when a pressing force is applied to the power generation device 110, the entire piezoelectric element 31 can be constantly deformed, and thus the piezoelectric element 31. It is possible to improve the power generation efficiency of the power generation apparatus 110 as compared with a case where a part of the power generation device 110 does not fall within the region corresponding to the space 55.

(Configuration-Others)
In addition to the configuration of the power generation device 110 described above, the power generation device 110 can be configured with an arbitrary structure. FIGS. 15 and 16 are perspective views illustrating an example of the configuration of the power generation module 60 in the power generation apparatus 110 according to the modification of the second embodiment.

  In the power generation module 80 of the modification shown in FIG. 15, the planar shape of the power generation plate 30 (specifically, the planar shape of the piezoelectric element 31 and the diaphragm 32) is set to a substantially equilateral triangle shape, and the planar shape of the space portion 55. Is set in a substantially regular hexagonal shape. More specifically, the planar shape of the power generation plate 30 and the space portion 55 is set so that the length of each side of the power generation plate 30 is longer than the length of each side of the space portion 55 (FIG. 16). The same applies to the planar shapes of the power generation plate 30 and the space 55). Further, the first contact portion 40 is disposed so as to contact a substantially central portion on the upper surface of the power generation plate 30. Further, the second contact portion 52 is disposed at a contact portion with each corner portion of the power generation plate 30 in the circuit board 70.

  Further, in the power generation module 80 of the modification shown in FIG. 16, the planar shape of the power generation plate 30 (specifically, the planar shape of the piezoelectric element 31 and the diaphragm 32) is set to a substantially square shape, and the plane of the space portion 55. The shape is set to a substantially regular octagonal shape. Further, the first abutting portion 40 is disposed so as to abut on a substantially central portion on the upper surface of the power generation plate 30. Further, the second contact portion 52 is disposed at a contact portion with each corner portion of the power generation plate 30 in the circuit board 70.

  With these configurations, even when the planar shape of the power generation plate 30 is a substantially equilateral triangle shape or a substantially square shape, each corner portion of the power generation plate 30 and the second contact portion 52 are in contact with each other. It becomes possible to press the plate 30 stably.

(effect)
As described above, according to the second embodiment, since one base portion 21 is the circuit board 70 electrically connected to the power generation plate 30, a dedicated component as the second contact portion 52 is separately provided. Since it becomes unnecessary, the manufacturing cost of the power generation device 110 can be reduced as compared with the conventional device.

  Further, since at least a part of the power generation plates 30a to 30i can be detachably attached to the circuit board 70, the number of power generation plates 30 can be adjusted according to the situation. Can be easily adjusted.

  Further, since the base portion 21 and the power generation plate 30 are formed based on C1 ≧ F1 and C2 ≧ F2, for example, even when the power generation plate 30 is fixed to the circuit board 70 by the clasp 71 or the like, the entire piezoelectric element 31 is formed. Can be reliably deformed.

[Modifications to Embodiment]
Although the embodiments of the present invention have been described above, the specific configuration and means of the present invention are arbitrarily modified and improved within the scope of the technical idea of each invention described in the claims. be able to. Hereinafter, such a modification will be described.

(About problems to be solved and effects of the invention)
First, the problems to be solved by the invention and the effects of the invention are not limited to the above-described contents, and the present invention solves the problems not described above or has the effects not described above. There are also cases where only some of the described problems are solved or only some of the described effects are achieved. For example, even when a pressing force is applied to the power generation device, even if the power generation plate 30 is difficult to be pressed and deformed, the pressure deformation of the power generation plate 30 can be achieved in the same manner as before by a technique different from the conventional one. If so, the problem of the present invention has been solved.

(About power generation plate)
In the first and second embodiments, the power generation plate 30 has been described as a power generation plate (so-called unimorph type) in which the piezoelectric element 31 is provided on one of the side surfaces of the vibration plate 32. It may be a power generation plate (so-called bimorph type) provided with piezoelectric elements 31 on both side surfaces.

  In the first and second embodiments, it has been described that the power generation plate 30 includes the piezoelectric element 31 and the diaphragm 32. For example, in order to protect the piezoelectric element 31, the piezoelectric plate 31 has You may further provide resin (piezofilm etc.) for covering the whole or a part. Alternatively, for example, the diaphragm 32 may be omitted.

  In the first and second embodiments, the power generation plate 30 is described as including the piezoelectric element 31. For example, instead of the piezoelectric element 31, a mechanism capable of generating power by reciprocating motion (specifically, Artificial muscles, hydraulic motors, electromagnetic induction motors, giant magnetostrictors, electrets, etc.) may be provided.

  In the first and second embodiments, the piezoelectric plate 31 is always in the region corresponding to the space portion 55 when the power generation plate 30 is in contact with the second contact portion 52. Although it has been described that the element 31 is formed, the present invention is not limited to this. For example, in a state where the power generation plate 30 is in contact with the second contact portion 52, a part of the piezoelectric element 31 corresponds to the space portion 55. The piezoelectric element 31 may be formed so as to be outside the area of the portion. Specifically, in the first embodiment, the length C1 from the left end of the diaphragm 32 to the left end of the piezoelectric element 31 is shorter than the length B1 from the left end of the recess 51 to the left end of the space 55. The piezoelectric element 31 is formed so as to satisfy (that is, C1 <B1).

  Moreover, in the said Embodiment 2, although demonstrated that the electric power generation plate 30 was installed so that the whole outer edge part of the electric power generation plate 30 might contact the 2nd contact part 52, it is not restricted to this, For example, The power generation plate 30 may be installed such that a part of the outer edge portion of the power generation plate 30 contacts the second contact portion 52. Specifically, in the second embodiment, the power generation plate 30 is arranged so that only the left side portion of the space 55 is not covered by the power generation plate 30, and only the right side portion of the outer edge portion of the power generation plate 30 is arranged. Are mechanically connected by a clasp 71. In this case, for example, the first contact portion 40 is a portion of the power generation plate 30 opposite to the connection portion with the clasp 71 (specifically, the left portion of the outer edge portion of the power generation plate 30). The second contact portion 52 is disposed at a contact portion with the right side portion of the outer edge portion of the circuit board 70. As a result, the power generation plate 30 can be pressed and deformed regardless of the size of the planar shape of the power generation plate 30.

  Moreover, although the said Embodiment 2 demonstrated that the electric power generation plates 30a-30i were provided in the upper surface of the circuit board 70, it is not restricted to this. For example, as illustrated in FIG. 17, the power generation plates 30 a to 30 i may be provided on the upper surface and the lower surface of the circuit board 70. In this case, a central spacer 60 is provided on the base portion 21 and the cover portion 22 of the housing 20 so that the power generation plates 30a to 30i can be deformed. With such a configuration, the number of installed power generation plates 30 can be increased as compared with the power generation apparatus 110 according to Embodiment 2, and the power generation amount can be increased. In the power generation device 110 shown in FIG. 17, for example, when the circuit board 70 is formed of a highly flexible material, the second contact portion 52 moves with the vibration of the circuit board 70. By doing so, the power generation plate 30 can be deformed, and the power generation amount of the power generation apparatus 110 can be further increased.

(About the diaphragm)
In the first and second embodiments, it has been described that the thickness of the diaphragm 32 is set to be greater than the thickness of the piezoelectric element 31. For example, the thickness of the diaphragm 32 is greater than the thickness of the piezoelectric element 31. It may be set thin or may be set to substantially the same thickness.

  Further, in the first and second embodiments, it has been described that the diaphragm 32 is arranged so that the center of the piezoelectric element 31 and the center of the diaphragm 32 are located at the same position along the vertical direction. For example, the diaphragm 32 may be arranged so that the center of the piezoelectric element 31 is located on the left side (or right side position) of the center of the diaphragm 32.

(About the housing)
In the first embodiment, it has been described that the base portion 21 of the housing 20 is provided with the concave portion 51. However, the present invention is not limited to this, and the concave portion 51 may be omitted, for example. In this case, as shown in FIG. 18, the second contact portion 52 is formed in a part of the base portion 21 adjacent to the power generation plate 30.

(Center spacer and circuit board layout)
In the second embodiment, the center spacer 60 is disposed between the cover portion 22 of the housing 20 and the power generation plate 30, and the circuit board 70 is disposed between the base portion 21 of the housing 20 and the power generation plate 30. However, for example, the center spacer 60 is disposed between the base portion 21 of the housing 20 and the power generation plate 30, and the circuit board 70 is disposed between the cover portion 22 and the power generation plate. 30 may be arranged between each other. In this case, the first contact portion 40 is disposed so as to contact the lower surface of the power generation plate 30, and the second contact portion 52 is disposed so as to contact the upper surface of the power generation plate 30. As a result, when a pressing force is applied to the power generation device 110, a part of the power generation plate 30 enters and exits the space portion 55 as the second contact portion 52 moves, so that the power generation plate 30 is It becomes possible to press and deform.

(About protection pillars)
In the first embodiment, it has been described that the protective column 41 is provided on the cover portion 22 of the housing 20. However, the present invention is not limited thereto, and may be provided on the base portion 21 of the housing 20, for example.

  Moreover, in the said Embodiment 2, although the protection pillar 41 is not provided, it is not restricted to this. For example, as shown in FIG. 19, the protection column 41 may be provided between the first contact portions 40 in the center spacer body 61. In this case, with respect to the arrangement of the protection pillar 41, for example, the protection pillar 41 may be arranged so that the bottom surface of the protection pillar 41 faces the circuit board 70 as shown on the right side of FIG. Further, as shown on the left side of FIG. 19, the protective column 41 is fitted between the pair of protrusions 21 c formed on the base portion 21 of the housing 20 through the through holes 72 formed on the circuit board 70. The protection pillars 41 may be disposed so as to be combined (or the formation of the through holes 72 may be omitted). The vertical length of the protrusion 21 is specifically set to about half the vertical length of the circuit board 70.

(About clasp)
In the second embodiment, it has been described that the power generation plate 30 and the circuit board 70 are electrically and mechanically connected by the clasp 71. However, the present invention is not limited to this. For example, a solder part may be used instead of the clasp 71, and the power generation plate 30 and the circuit board 70 may be electrically and mechanically connected by the solder part. Regarding the arrangement of the solder portions, for example, a plurality of (for example, three, etc.) solder portions may be arranged in the vicinity of the outer edge of each of the power generation plates 30a to 30i with a predetermined interval, or the solder portions may be power generation plates. You may arrange | position over the outer edge vicinity part of each of 30a-30i.

(About the number of power generation modules)
In the first and second embodiments, it has been described that the power generation device includes the plurality of power generation modules 80. However, for example, a single power generation module 80 may be included.

(Appendix)
The power generation device of Appendix 1 is a power generation device that converts an external force into electricity using a power generation element, and is a first power generation plate provided so as to be in contact with one of the side surfaces of the power generation plate and the power generation plate. A second abutting means provided so as to be able to abut on a side surface of the power generating plate opposite to the side surface on the first abutting means side, and the second abutting means. Allows the power generation plate to enter when the power generation plate is pressed toward the second contact means so that the power generation plate can be pressed and deformed to at least the first deformation amount. When an external force is applied to the power generation device, the power generation plate comes into contact with the first contact means and the second contact means, so that a part of the power generation plate is Entering the space Accordingly, when the pressing deformation of the power generation plate reaches a second deformation amount that is a deformation amount smaller than the first deformation amount, and an external force is applied to the power generation device, the first contact means or With the movement of either one of the second contact means, a part of the power generation plate enters the space, so that the pressing deformation of the power generation plate reaches the first deformation amount. The first contact means and the second contact means are arranged.

  Further, the power generation device according to appendix 2 is the power generation device according to appendix 1, in a state where the power generation element corresponds to the space portion in a state where the power generation plate is in contact with the second contact means. The power generation plate is formed at least so that it always fits.

  Further, the power generation device according to supplementary note 3 further includes one base portion in the power generation device according to supplementary note 1 or 2, such that the power generation plate abuts the side surface on one of the side surfaces of the one base portion. , A plurality of the power generation plates are arranged in parallel along a predetermined direction, and a plurality of the first contact means are provided on a side surface of each of the plurality of power generation plates opposite to the side surface in contact with the one base portion. Each of the plurality of power generation plates in the one base portion is formed as a part of a portion corresponding to each of the plurality of power generation plates in the one base portion as the second contact means. The space portions were formed in other portions corresponding to the portions.

  Further, the power generation device according to supplementary note 4 includes the aggregation region for consolidating wirings connected to each of the power generation elements of at least two of the power generation plates in the power generation device according to supplementary note 3.

  Further, the power generation device according to appendix 5 is the power generation device according to appendix 3 or 4, wherein at least a part of the plurality of power generation plates can be detachably attached to the one base portion.

  Further, the power generation device according to appendix 6 is the power generation device according to any one of appendices 3 to 5, wherein each of the plurality of power generation plates is received on a side surface of the one base portion on the side of the plurality of power generation plates. Forming each of the possible recesses, forming the space in a part of the one base portion adjacent to the side surface of the recess opposite to the side surface on the first contact means side, Another part of the portion of the one base portion adjacent to the side surface on the side opposite to the side surface on the first contact means side of the concave portion is formed as the second contact means.

  Further, the power generation device according to appendix 7 is the power generation device according to any one of appendices 3 to 6, wherein the one base portion is a circuit board electrically connected to the power generation plate.

  Further, the power generation device according to supplementary note 8 is the power generation device according to any one of supplementary notes 1 to 7, wherein the deformation suppression that suppresses the pressure deformation of the power generation plate when the pressure deformation of the power generation plate reaches a predetermined amount. Means were further provided.

  The power generation device according to appendix 9 is the power generation device according to any one of appendices 1 to 8, wherein the power generation plate includes the power generation element and a vibration plate that transmits vibration to the power generation element, The power generation element is disposed on at least one side surface of the vibration plate, and the vibration plate is formed so that the thickness of the vibration plate is larger than the thickness of the power generation element.

  Further, the power generation device according to appendix 10 further includes one base portion in the power generation device according to appendix 1, and the power generation plate is in contact with the side surface at one of the side surfaces of the one base portion. A plurality of power generation plates are arranged in parallel along a predetermined direction, and a plurality of the first contact means are provided on the side surface of each of the plurality of power generation plates opposite to the side surface in contact with the one base portion. A recess that can receive each of the plurality of power generation plates is formed on a side surface of the one base portion on the side of the plurality of power generation plates, and the first contact means of the recess in the one base portion The space is formed in a part of a portion adjacent to the side surface opposite to the side surface on the side, and is opposite to the side surface on the first contact means side of the recess in the one base portion Another part of the portion adjacent to the side surface is formed as the second abutting means, and the power generation plate includes the power generation element and a vibration plate that transmits vibration to the power generation element. Are in contact with the second contact means, the power generation plate and the one base portion are expressed by the following formulas so that the power generation element always fits in the region corresponding to the space portion. C1 ≧ B1, E-C1-D ≧ B2, E-C1-C2-D ≦ B2, C2 ≧ B2, E-C2-D ≧ B1, E-C1-C2-D ≦ B1 (here) B1 is the length from one end of the recess in the width direction to one end of the space in the width direction, and B2 is the width of the recess in the width direction from the other end in the width direction. The length up to the other end of C1, C1 is the diaphragm The length from one end in the width direction to one end in the width direction of the power generation element, C2 is the other end in the width direction in the power generation element from the other end in the width direction of the diaphragm D is the length from one end in the width direction of the power generating element to the other end in the width direction, and E is the other end in the width direction from one end in the width direction of the recess. Length to the end of the).

  Further, the power generation device according to appendix 11 further includes one base portion in the power generation device according to appendix 1, and the power generation plate is in contact with the side surface at one of the side surfaces of the one base portion. A plurality of power generation plates are arranged in parallel along a predetermined direction, and a plurality of the first contact means are provided on the side surface of each of the plurality of power generation plates opposite to the side surface in contact with the one base portion. A part of the portion corresponding to each of the plurality of power generation plates in the one base portion is formed as the second contact means, and corresponds to each of the plurality of power generation plates in the one base portion. The space is formed in another part of the part to be mounted, and at least a part of the plurality of power generation plates can be detachably attached to the one base part. The plate includes the power generation element and a vibration plate that transmits vibration to the power generation element, and the power generation element corresponds to the space portion in a state where the power generation plate is in contact with the second contact means. C1 ≧ F1, C2 ≧ F2 (where C1 is the width direction of the diaphragm) in which the power generation plate and the one base portion are formed based on the following formulas so as to always be within the region of the portion. The length from one end to one end in the width direction of the power generating element, C2 is the length from the other end in the width direction of the diaphragm to the other end in the width direction of the power generating element F1 is a length from one end in the width direction of the diaphragm to one end in the width direction in the space, and F2 is a width in the space from the other end in the width direction of the diaphragm. In the other direction The length of the up part).

(Additional effects)
According to the power generation device described in appendix 1, when no external force is applied to the power generation device, the power generation plate comes into contact with the first contact means and the second contact means, so that a part of the power generation plate is obtained. When the pressure deformation of the power generation plate reaches the second deformation amount and an external force is applied to the power generation device, either the first contact means or the second contact means is entered. The first abutting means and the second abutting means are arranged so that a part of the power generation plate enters the space part with the movement of one side, and the pressing deformation of the power generation plate reaches the first deformation amount. Therefore, by pressing and deforming the power generation element in a state where no external force is applied to the power generation device, the external force is applied from a state in which no external force is applied to the power generation device, whereby the pressure deformation of the power generation plate is the first deformation amount. Reach It is possible to reduce the amount of deformation of the power generating element to a state, as compared with the conventional apparatus, it is possible to improve the power generation efficiency per unit amount of deformation in the power generation element.

  According to the power generation device described in appendix 2, at least the power generation plate is arranged so that the power generation element is always within the region corresponding to the space portion in a state where the power generation plate is in contact with the second contact means. As a result, when the external force is applied to the power generation device, the entire power generation element can always be deformed. Compared to the case where a part of the power generation element does not fit in the area corresponding to the space, The power generation efficiency of the device can be improved.

  According to the power generation device described in Appendix 3, on one of the side surfaces of one base portion, a plurality of the power generation plates are arranged in parallel along a predetermined direction so that the power generation plate is in contact with the side surface. A plurality of first abutting means are provided on the side surface opposite to the side surface in contact with one base portion in each of the plurality of power generation plates, and a part of a portion corresponding to each of the plurality of power generation plates in one base portion is provided. Since the space portion is formed in the other part of the portion corresponding to each of the plurality of power generation plates in one base portion, the space plate is formed in a simple configuration. Since the number can be increased, the amount of power generation can be easily increased.

  According to the power generation device described in appendix 4, since the aggregation region for consolidating the wiring connected to each of the power generation elements of at least two or more power generation plates is provided, a plurality of power generations are performed in one base portion. Even when the plates are arranged side by side, since the wirings connected to the respective power generation plates can be collected, the wirings can be easily arranged.

  According to the power generation device described in appendix 5, since at least a part of the plurality of power generation plates can be detachably attached to one base portion, the number of power generation plates installed can be adjusted according to the situation. Therefore, it becomes possible to easily adjust the power generation amount of the power generation device.

  According to the power generation device described in appendix 6, a space portion is formed in a part of a portion of the base portion adjacent to the side surface on the side opposite to the side surface on the first contact means side, and Since the other part of the portion adjacent to the side surface on the opposite side to the side surface on the first contact means side of the recess in the base portion is formed as the second contact means, without using a fixture or the like, The power generation plate can be easily fixed to the recess, and the productivity of the power generation device can be improved.

  According to the power generation device described in appendix 7, since one base portion is a circuit board electrically connected to the power generation plate, it is not necessary to separately provide a dedicated component as the second contact means. Thus, it is possible to reduce the manufacturing cost of the power generation device as compared with the conventional device.

  According to the power generation device described in appendix 8, since the power generation plate further includes the deformation suppressing unit that suppresses the pressure deformation of the power generation plate when the pressure deformation of the power generation plate reaches a predetermined amount, excessive power generation deformation of the power generation element is prevented. Therefore, it is possible to prevent cracking of the power generation element.

  According to the power generation device described in appendix 9, since the diaphragm is formed so that the thickness of the diaphragm is larger than the thickness of the power generation element, the strength of the power generation plate compared to the power generation plate that does not include the diaphragm. It is possible to further improve cracking of the power generation element.

  According to the power generation device described in Appendix 10, the power generation plate and one base portion are connected to C1 ≧ B1, E-C1-D ≧ B2, E-C1-C2-D ≦ B2, C2 ≧ B2, E-C2. Since it formed based on -D> = B1, E-C1-C2-D <= B1, even when a power generation plate is provided in a recessed part, the whole power generating element can be deform | transformed reliably.

  According to the power generation device described in appendix 11, since the power generation plate and one base portion are formed based on C1 ≧ F1 and C2 ≧ F2, for example, the power generation plate is fixed to the base portion by a clasp or the like. Even in this case, the entire power generating element can be reliably deformed.

DESCRIPTION OF SYMBOLS 1 Power generation floor 2 Accommodating part 3 Connection part 10 Power generation apparatus 20 Case 21 Base part 21a Fixing plate 21b Side plate 21c Protrusion part 22 Cover part 22a Cover part main body 22b Side plate 22c Groove part 30, 30a-30p Electric power generation plate 31 Piezoelectric element 32 Vibration plate 33 Wiring 40 First abutting portion 41 Protective column 51 Recessed portion 52 Second abutting portion 53 Aggregation region 54 Accommodating hole 55 Space portion 60 Central spacer 61 Central spacer main body 61a Recessed portion for wiring 70 Circuit board 71 Clasp 72 Through hole 80 Power generation module 110 Power generation device W Installation surface

Claims (11)

A power generation device that converts external force into electricity using a power generation element,
A power generation plate having the power generation element;
First contact means provided so as to be able to contact one of the side surfaces of the power generation plate;
A second abutting means provided so as to be able to abut on a side surface opposite to the side surface on the first abutting means side of the power generation plate;
The second contact means includes
When the power generation plate is pressed toward the second contact means side, a space portion that allows the power generation plate to enter so that the power generation plate can be pressed and deformed at least to the first deformation amount. With
When no external force is applied to the power generation device, the power generation plate comes into contact with the first contact means and the second contact means, so that a part of the power generation plate enters the space portion. Accordingly, when the pressing deformation of the power generation plate reaches a second deformation amount that is a deformation amount smaller than the first deformation amount, and an external force is applied to the power generation device, the first contact means or With the movement of either one of the second contact means, a part of the power generation plate enters the space, so that the pressing deformation of the power generation plate reaches the first deformation amount. The first contact means and the second contact means are arranged.
Power generation device. In a state where the power generation plate is in contact with the second contact means, at least the power generation plate is formed so that the power generation element always fits in a region corresponding to the space portion.
The power generation device according to claim 1. It further comprises one base part,
A plurality of the power generation plates are juxtaposed along a predetermined direction so that the power generation plate contacts the side surface on one of the side surfaces of the one base portion,
A plurality of the first contact means are provided on the side surface opposite to the side surface in contact with the one base portion in each of the plurality of power generation plates,
A part of a portion corresponding to each of the plurality of power generation plates in the one base portion is formed as the second contact means, respectively.
The space portions are respectively formed in other parts of the portions corresponding to the plurality of power generation plates in the one base portion,
The power generator according to claim 1 or 2. An aggregation region for aggregating wires connected to each of the power generation elements of at least two or more power generation plates;
The power generator according to claim 3. At least a part of the plurality of power generation plates can be detachably attached to the one base portion.
The power generator according to claim 3 or 4. Forming a recess capable of receiving each of the plurality of power generation plates on a side surface of the one base portion on the side of the plurality of power generation plates;
Forming the space portion in a part of a portion of the one base portion adjacent to the side surface opposite to the side surface on the first contact means side of the concave portion;
In the one base portion, another part of the portion adjacent to the side surface opposite to the side surface on the first contact means side of the concave portion is formed as the second contact means.
The power generation device according to any one of claims 3 to 5. The one base portion is a circuit board electrically connected to the power generation plate.
The power generator according to any one of claims 3 to 6. A deformation suppressing means for suppressing the pressure deformation of the power generation plate when the pressure deformation of the power generation plate reaches a predetermined amount;
The power generator according to any one of claims 1 to 7. The power generation plate is
The power generation element;
A diaphragm for transmitting vibration to the power generation element,
The power generating element is disposed on at least one side surface of the diaphragm,
The diaphragm is formed so that the thickness of the diaphragm is thicker than the thickness of the power generation element.
The power generation device according to any one of claims 1 to 8. It further comprises one base part,
A plurality of the power generation plates are juxtaposed along a predetermined direction so that the power generation plate contacts the side surface on one of the side surfaces of the one base portion,
A plurality of the first contact means are provided on the side surface opposite to the side surface in contact with the one base portion in each of the plurality of power generation plates,
Forming a recess capable of receiving each of the plurality of power generation plates on a side surface of the one base portion on the side of the plurality of power generation plates;
Forming the space portion in a part of a portion of the one base portion adjacent to the side surface opposite to the side surface on the first contact means side of the concave portion;
Forming another part of the portion of the one base portion adjacent to the side surface opposite to the side surface on the first contact means side of the recess as the second contact means;
The power generation plate is
The power generation element;
A diaphragm for transmitting vibration to the power generation element,
In the state where the power generation plate is in contact with the second contact means, the power generation plate and the one base portion are arranged so that the power generation element is always within the region corresponding to the space portion. Based on the following formula,
C1 ≧ B1,
E-C1-D ≧ B2,
E-C1-C2-D ≦ B2,
C2 ≧ B2,
E-C2-D ≧ B1,
E-C1-C2-D ≦ B1
(Here, B1 is the length from one end of the recess in the width direction to one end of the space in the width direction, and B2 is from the other end of the recess in the width direction in the space. Length to the other end in the width direction, C1 is a length from one end in the width direction of the diaphragm to one end in the width direction of the power generating element, and C2 is a width direction in the diaphragm The length from the other end of the power generating element to the other end in the width direction of the power generating element, D is the length from one end of the power generating element in the width direction to the other end of the width direction, E Is the length from one end in the width direction of the recess to the other end in the width direction)
The power generation device according to claim 1. It further comprises one base part,
A plurality of the power generation plates are juxtaposed along a predetermined direction so that the power generation plate contacts the side surface on one of the side surfaces of the one base portion,
A plurality of the first contact means are provided on the side surface opposite to the side surface in contact with the one base portion in each of the plurality of power generation plates,
A part of a portion corresponding to each of the plurality of power generation plates in the one base portion is formed as the second contact means, respectively.
Forming the space portion in the other part of the portion corresponding to each of the plurality of power generation plates in the one base portion;
At least a part of the plurality of power generation plates can be detachably attached to the one base portion,
The power generation plate is
The power generation element;
A diaphragm for transmitting vibration to the power generation element,
In the state where the power generation plate is in contact with the second contact means, the power generation plate and the one base portion are arranged so that the power generation element is always within the region corresponding to the space portion. Based on the following formula,
C1 ≧ F1,
C2 ≧ F2
(Where C1 is the length from one end in the width direction of the diaphragm to one end in the width direction of the power generating element, and C2 is the length from the other end in the width direction of the diaphragm. The length to the other end in the width direction of the element, F1 is the length from one end in the width direction of the diaphragm to the one end in the width direction in the space, and F2 is the length in the diaphragm The length from the other end portion in the width direction to the other end portion in the width direction in the space portion),
The power generation device according to claim 1.

Images