JP2002164588A - Power generating device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To generate a large amount of electric power with a minute force. SOLUTION: A power generating module 12 is provided with a piezoelectric element 122 and a conflict member 123 which moves to conflict with the piezoelectric element 122. The power generating module 12 is coupled with a revolving shaft 13 and a weight 14 to constitute a pendulum 1. The power generating module 12 is positioned on the upper side of the revolving shaft 13, at the pendulum 1 in which the conflict member 123 moves between the piezoelectric elements 122 facing each other.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention belongs to the technical field of a power generator using a piezoelectric element.

[0002]

2. Description of the Related Art Conventionally, as a power generator, for example, a power generator described in Japanese Patent Publication No. 60-47994 is known.

This conventional power generation device includes a power generation module including a piezoelectric element (piezoelectric body) and a collision member (weight) that moves (rolls and moves) and collides with the piezoelectric element. A piezoelectric element that generates mechanical strain due to collision generates power.

[0004]

SUMMARY OF THE INVENTION In a conventional power generator,
As pointed out in the description of Japanese Patent Publication No. 60-47994, the power generation amount does not increase unless the collision member of the power generation module moves violently and collides frequently with the piezoelectric element. For this reason, a large force (kinetic energy) must be applied in order to move the collision member violently. Therefore, although applications in various fields are being studied, there is a problem that practicality is low and practical application does not proceed. .

[0005] The present invention has been made in view of such problems, and has as its object to provide a power generation device capable of obtaining a large amount of power generation with a small force.

[0006]

Means for Solving the Problems In order to solve the above-mentioned problems, the power generator according to the present invention employs the following means.

That is, according to the present invention, a power generating module comprising a piezoelectric element and a collision member which moves and collides with the piezoelectric element is provided, and a pendulum body is formed by combining the power generating module with a fulcrum and a weight. The power generation module is positioned above the fulcrum in the body.

In this means, the power generation module is incorporated into a pendulum body that periodically swings by inertia by applying a small force, so that kinetic energy is continuously supplied to the collision member of the power generation module, and the piezoelectric element is frequently turned on. Collision with the element increases the amount of power generation. The position of the power generation module in the pendulum is such that the collision member is positioned above the tilt due to the swing and the piezoelectric element is positioned below the tilt due to the swing, so that the collision member effectively collides with the piezoelectric element. As a fulcrum, in addition to a pivot such as a rotary shaft, a structure in which the lower surface of the pendulum body is unstablely supported at a single point, such as a so-called jersey, can be used.

According to a second aspect of the present invention, in the power generating apparatus according to the first aspect, the fulcrum is a rotating shaft, and the power generating module has a structure in which a collision member moves between opposed piezoelectric elements. I do.

In this means, the pendulum motion by the rotating shaft is obtained, the tilting acceleration is increased, and the collision member collides with the piezoelectric element on the opposite side.

According to a third aspect of the present invention, there is provided a power generation module including a piezoelectric element and a collision member which moves and collides with the piezoelectric element, and a pendulum body is formed by combining the power generation module with a fulcrum and a weight. The power generation module is located below the fulcrum in the body.

In this means, the power generation module is incorporated in a pendulum body that periodically swings by inertia by applying a small force, so that kinetic energy is continuously supplied to the collision member of the power generation module, and the piezoelectric module is frequently turned on. Collision with the element increases the amount of power generation. The position of the power generation module in the pendulum is such that one collision member is positioned above the tilt due to the swing and the piezoelectric element is positioned below the tilt due to the swing, so that the effective collision of the collision member with the piezoelectric element is achieved. Let it. As a fulcrum, in addition to a pivot such as a rotary shaft, the lower surface of the pendulum body is unstablely supported at a single point, such as a so-called jersey.

According to a fourth aspect of the present invention, in the power generation device according to the third aspect, the fulcrum is a rotation shaft, and the power generation module has a structure in which a collision member moves on both sides of the piezoelectric element.

In this means, a pendulum motion by the rotation shaft is obtained, the tilting acceleration is increased, and the collision member collides with both sides of the piezoelectric element.

Further, in the present invention, a power generating module comprising a piezoelectric element and a collision member which moves and collides with the piezoelectric element is provided. The module is supported by a liquid medium.

According to this means, since the power generation module is supported in an unstable state via the liquid medium, the power generation module is assembled into a pendulum body that oscillates by inertia by applying a small force. Kinetic energy is continuously supplied to the colliding member to frequently collide with the piezoelectric element, thereby increasing the power generation amount. As the liquid medium, oil and various mixed liquids are selected in addition to the liquid.

According to a sixth aspect of the present invention, in the power generation device according to the fifth aspect, the liquid medium is a liquid such as water, and the power generation module is suspended in the liquid.

In this means, the power generation module floats on the water, and the power generation module swings in an unstable state, so that the piezoelectric elements frequently collide with each other.

According to a seventh aspect of the present invention, in the power generator according to any one of the first to sixth aspects, a wind receiver swinging by wind power is connected to the pendulum via a suspension member.

In this means, the wind receiver receiving the wind swings the pendulum through the suspension.

According to an eighth aspect of the present invention, in the power generation device according to the seventh aspect, the suspension member is provided with a twist-back for freely suspending the wind receiver.

In this means, the untwist changes the hanging direction of the wind receiver following the change in the direction of the wind.

According to a ninth aspect of the present invention, in the power generator according to the seventh or eighth aspect, the wind receiver is formed in a plate shape having a deviated center of gravity.

In this means, the moment of inertia of the left and right sides of the hanging of the wind receiver by the hanging material becomes unbalanced, and the change of the hanging direction of the wind receiver following the change in the wind direction becomes irregular. .

According to a tenth aspect of the present invention, in the power generator according to any one of the seventh to ninth aspects, there is provided a snow removing member for contacting the oscillating wind receiver to prevent accumulation of snow on the wind receiver. It is characterized by having.

According to this means, when snow or the like falls on the wind receiver, the oscillating wind receiver comes into contact with the snow removing member and the snow is shaken off (removed), so that the wind receiver has a good swing. The dynamic state is maintained.

According to an eleventh aspect of the present invention, in the power generator according to the tenth aspect, the snow removal member is formed of a wire rod provided in an umbrella shape above the wind receiver.

In this means, the oscillating wind receiver comes into contact with a wire such as a wire stretched in an umbrella shape, and the accumulated snow is dropped.

[0029]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of a power generator according to the present invention.

1 to 4 show an embodiment (1) of a power generator according to the present invention.

In this embodiment, a power generator utilizing wind power is shown.

In this embodiment, as shown in FIG. 1, each part of a pendulum body 1, a suspension member 2, and a wind receiver 3 is schematically constituted.

The pendulum body 1 is mounted on a frame plate-shaped casing 11 from above with a power generation module 12 and a rotating shaft 1 as a fulcrum.
3, the weight 14 is assembled.

As shown in detail in FIG. 2, the power generation module 12 has a collision member made of a ball rolling inside the housing 121 on a piezoelectric element 122 mounted on opposing side walls inside the box-shaped housing 121. 123 are configured to collide. The piezoelectric element 122 is formed by connecting two PZT-based plate-shaped piezoelectric ceramic plates 122a and 122b so that their polarizations are opposite to each other, thereby preventing the cancellation by polarization as a power generation configuration connected in series. Power generation performance has been improved. Further, the piezoelectric element 122 is attached to the housing 121 only partially at the center of the plate-shaped cushioning material 125 adhered to the housing 121 with the adhesive 124, and is attached to the housing 121. From the piezoelectric element 12
2 while protecting the piezoelectric ceramic plates 122a, 122a.
The natural vibration of 22b is continued, and the power generation performance is enhanced. Note that lead wires 126 are connected to film-shaped electrodes formed on the front and back surfaces of the piezoelectric element 122. Further, a thin plate protector 127 that protects the piezoelectric element 122 from the impact of the collision of the collision member 123 is fixed to the surface of the piezoelectric element 122 (the surface on which the collision member 123 collides). In addition, between the opposing piezoelectric elements 122,
A guide cylinder 128 is provided that regulates the direction of the rolling movement of the collision member 123 and guides the piezoelectric element 122 to accurately collide with the portion of the piezoelectric element 122 to which the protector 127 is fixed.

The rotating shaft 13 is fixedly penetrated to the casing 11 and is rotatably supported at an appropriate place of equipment to be installed.

The weight of the weight 14 is determined in consideration of the weight of the power generation module 12 and the like.

The suspension cord 2 is connected to a bar 21 fixed to the lower end of the casing 11 of the pendulum 1 via a twist-back 22 having a freely rotating structure or the like.

The wind receiver 3 has a main body 31 formed in a plate shape.
A hanging hole 32 to which the hanging cord 23 of the hanging material 2 is connected is opened at an end of the body member 31, and a weight 33 is attached near the hanging hole 32 of the main body 31.

According to this embodiment, as shown in FIG. 3 and FIG. 4, the pendulum body 1 is moved through the suspension member 2 by the swinging stress of the wind receiver 3 which is swung by the wind and receives the wind. It will be rocked about the rotation shaft 13. As a result, the pendulum 1
Member 123 of the power generation module 12 incorporated in the
Collide with the piezoelectric element 122 to generate power. Preferably, the natural frequency of the swing of the wind receiver 3 and the natural frequency of the swing of the pendulum 1 are set to be substantially the same so that resonance occurs.

Since the center of gravity of the wind receiver 3 oscillated by the wind is deviated by the weight 33, the moment of inertia of the left and right sides of the suspension by the suspension member 2 is unbalanced. For this reason, the change in the hanging direction of the wind receiver 3 that follows the change in the direction of the wind becomes irregular, and swinging is likely to occur even with a slight wind. Therefore, the amount of power generation can be increased even with a small amount of wind power.

The suspension member 2 for relaying the swinging stress of the wind receiver 3
The twisting back 22 changes the suspension direction of the wind receiver 3 following the change in the direction of the wind to prevent twisting. Therefore, it is possible to prevent the loss of the stress caused by the swing of the wind receiver 3 by the suspension member 2.

The pendulum 1 oscillated by the stress of the wind receiver 3 oscillates periodically due to inertia when a small force is applied. The kinetic energy is continuously supplied to cause frequent collision with the piezoelectric element 122. Therefore, the amount of power generation can be increased even with a small amount of wind power.

Further, in the power generating module 12 of the pendulum body 1 that is swung, the power generating module 12 is located above the rotary shaft 13, so that the collision member 123 is positioned above the tilt due to the swing. The piezoelectric element 122 is located below the tilt due to the movement. Therefore, the collision member 12
3 easily rolls and effectively collides with the piezoelectric element 22.

Further, in this embodiment, a snow removing member 4 is provided at a position where the oscillating wind receiver 3 can contact. As shown in FIG. 1, the snow removing member 4 is made of a wire 41 such as a wire or a plastic, and is attached to a case 5 provided so as to cover the pendulum 1. It overhangs like an umbrella. If the distance between the outermost periphery of the snow removing member 4 and the wind receiver 3 is too short, the wind receiver 3 frequently contacts and hinders swinging.
Are preferably separated by about the amplitude of By providing the snow removing member 4, when snow falls on the wind receiver 3, the oscillating wind receiver 3 and the snow removing member 4 collide with each other and the snow is shaken off. It can be prevented from becoming heavy and difficult to swing.

FIGS. 5 to 8 show an embodiment (2) of a power generator according to the present invention.

In this embodiment, the pendulum 1 has a frame plate-shaped casing 11 on which a rotating shaft 13, a power generation module 12, and a weight 14 are assembled from above.

The power generation module 12 has a piezoelectric element 122 attached to a central portion inside a box-shaped housing 121.
A collision member 123 composed of two balls rolling on both sides of the piezoelectric element 122 inside the housing 121 is configured to collide. The piezoelectric element 122 is made of the adhesive 1
The end is partially sandwiched and supported by a U-shaped cushion member 125 adhered to the housing 121 at 24 and attached to the housing 121 to protect the piezoelectric element 122 from the impact of the collision of the collision member 123 and to provide the piezoelectric ceramic plate. The natural vibrations of 122a and 122b are continued to enhance the power generation performance. The protector 127
Are fixed to both surfaces of the piezoelectric element 122. The guide cylinder 128 is connected to both sides of the piezoelectric element 122 and the housing 1.
21 are provided symmetrically.

According to this embodiment, basically, the same operation and effect as those of the above-mentioned embodiment (1) can be obtained, but the power generation module 12 of the swinging pendulum body 1 has a rotating shaft. 13, the one collision member 123 is located above the tilt due to the swing, and the piezoelectric element 122 is located below the tilt due to the swing. Therefore, at least one of the collision members 123 easily rolls and effectively collides with the piezoelectric element 22.

FIG. 9 shows an embodiment (3) of a power generator according to the present invention.

In this embodiment, the power generation module 12
Is supported on the liquid medium 131 in an unstable state. As the liquid medium 131, water, oil, various kinds of mixed liquids, and the like are selected, and are stored in a container 132 having an open top. The pendulum 1 is suspended in the liquid medium 131 of the container 132. The pendulum 1
As shown in the figure, the lower part is desirably formed in a conical shape so as to easily swing, and the conical part is floated in a watertight state.

According to this embodiment, an electric power generation effect by floating oscillation is obtained, and particularly, a long-time oscillation electric power generation by the swing inertia of the liquid becomes possible. In this case, since the swing direction may not be constant, the piezoelectric element 122 may be arranged in a crossing relative direction in addition to the relative direction.

In the above embodiments (2) and (3), similarly to the embodiment (1), a case 5 for covering the pendulum body 1 and a snow removing member 4 composed of a wire 41 and the like.
Can be provided.

As described above, in addition to the illustrated embodiment, it is also possible to select a collision member 123 of the power generation module 12 that has a movement form other than the rolling movement. For example, as shown in FIG. 9, the lower part of the pendulum body 1 is formed in a conical shape, and the pillar 133 projecting from the lower center is erected as a supporting point,
A structure that imparts vibration of the suspension member 2 can be selected.

Further, the piezoelectric element 1 of the power generation module 12
As 22, the bonded piezoelectric ceramic plates 122a, 1
It is also possible to form the multilayer 22b.

Further, the wind receiver 3 can have another structure such as a windmill shape.

Further, by changing the wind receiver 3, it is possible to generate electric power by a force other than the wind power.

Further, although not shown, it is apparent that by connecting a light emitting element such as an LED to the power generating device according to the embodiments (1) to (3), it can be utilized as various light emitting display mechanisms.

[0058]

As described above, the power generating apparatus according to the present invention can be continuously mounted on the collision member of the power generating module by incorporating the power generating module into a pendulum body that periodically swings by inertia by applying a small force. Kinetic energy is supplied to collide with the piezoelectric element frequently, the collision member is positioned above the tilt due to the swing of the pendulum body, and the piezoelectric element is positioned below the tilt due to the swing of the pendulum body, Since the collision member is caused to effectively collide with the piezoelectric element, the power generation amount can be increased with a small force.

Also, by incorporating the power generation module into a pendulum body that periodically oscillates by inertia by applying a small force, kinetic energy is continuously supplied to the collision member of the power generation module, and the piezoelectric element is frequently supplied to the piezoelectric element. To collide, position one of the collision members above the tilt due to the swing of the pendulum body, and position the piezoelectric element below the tilt due to the swing of the pendulum body to effectively collide the collision member with the piezoelectric element Thus, there is an effect that the amount of power generation can be increased with a small force.

Further, the pendulum can be rocked for a long time by utilizing the rocking of the liquid medium, and there is an effect that a continuous power generation with a long rocking can be obtained.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment (1) of a power generator according to the present invention.

FIG. 2 is an enlarged cross-sectional view of a main part of FIG.

FIG. 3 is a front view showing the operation of FIG.

FIG. 4 is another operation diagram of FIG. 3;

FIG. 5 is a perspective view showing an embodiment (2) of a power generator according to the present invention.

6 is an enlarged cross-sectional view of a main part of FIG.

FIG. 7 is a front view showing the operation of FIG.

FIG. 8 is another operation diagram of FIG. 7;

FIG. 9 is a front view showing an embodiment (3) of a power generator according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Pendulum 2 Suspension material 3 Wind receiver 4 Snow removing member 5 Case 11 Casing 12 Power generation module 13 Rotating shaft 14 Weight 21 Bar 22 Twist back 23 Suspension cord 31 Main body part 32 Suspension hole 33 Weight 41 Wire rod 121 Housing 122 Piezoelectric Element 122a Piezoelectric ceramic plate 122b Piezoelectric ceramic plate 123 Impact member 124 Adhesive material 125 Cushion material 126 Lead wire 127 Protector 128 Guide cylinder 131 Liquid medium 132 Container 133 Column

Claims (11)

[Claims] A power generating module comprising a piezoelectric element and a collision member which moves and collides with the piezoelectric element, wherein a pendulum is formed by combining a fulcrum and a weight with the power generating module; A power generator characterized by being located above a fulcrum. 2. The power generator according to claim 1, wherein the fulcrum is a rotating shaft, and the power generation module has a structure in which a collision member moves between piezoelectric elements opposed to each other. 3. A power generating module comprising a piezoelectric element and a collision member which moves and collides with the piezoelectric element, wherein a pendulum is formed by combining a fulcrum and a weight with the power generating module. A power generator characterized by being located below a fulcrum. 4. The power generator according to claim 3, wherein the fulcrum is a rotating shaft, and the power generation module has a structure in which a collision member moves on both sides of the piezoelectric element. 5. A power generating module comprising a piezoelectric element and a collision member which moves and collides with the piezoelectric element, wherein a pendulum is formed by combining a liquid medium with the power generating module. A power generator characterized by being supported. 6. The power generation device according to claim 5, wherein the liquid medium is a liquid, and the power generation module is suspended in the liquid. 7. The power generator according to claim 1, wherein a wind receiver swinging by wind power is connected to the pendulum via a suspension member. 8. The power generator according to claim 7, wherein the suspension member has a twist-back to freely suspend the wind receiver. 9. The power generator according to claim 7, wherein the wind receiver is formed in a plate shape whose center of gravity is deviated. 10. The power generator according to claim 7, further comprising a snow removing member for contacting the oscillating wind receiver to prevent accumulation of snow on the wind receiver. Power generator. 11. The power generator according to claim 10, wherein
A power generator, wherein the snow removing member is formed of a wire rod provided in an umbrella shape on an upper part of a wind receiver.