JP7285575B2 - Power generation mechanism and power generation method - Google Patents

Description

TECHNICAL FIELD The present invention relates to a power generation mechanism and a power generation method.

A self-powered energy harvester that can generate electric power using weak kinetic energy (human power, vibration, pressure, heat, sunlight, etc.) that was previously unused and discarded in the familiar environment. Energy Harvesting) is attracting attention.

2. Description of the Related Art Various electric appliances and devices such as lighting include those whose operations can be controlled by remote control using a wireless communication device. A wireless switch for controlling this type of wireless communication device has a built-in power source such as a dry battery, and the operation of the wireless communication device is controlled by power supplied from the power source.

On the other hand, there is a demand for a switch power generation mechanism that does not require work such as replacing or charging a power supply by generating power by energy harvesting and using that power to wirelessly send operation instructions to various devices. Specifically, a self-power generation type power generation mechanism has been realized in which power can be obtained by generating power by switching operation of the user without depending on the power supply when sending an instruction to turn on or off a device such as a light by wireless. there is

For example, the power generation mechanism described in Non-Patent Document 1 generates power using the kinetic energy of the operation of pressing a switch (switching operation), and wirelessly sends an instruction to turn on or off the lighting.

Energy Harvesting, [online], [February 9, 2016], Internet <URL: https://www.enocean.com/jp/technology/energy-harvesting/>

An example of such a power generation mechanism includes a structure in which a magnet is provided, a voice coil is fixed, and the magnet and the switch part are connected. When the user presses this switch part, the magnet moves inside the fixed voice coil, and the kinetic energy associated with the movement of the magnet generates electricity. Therefore, the amount of electric power generated is greatly affected by the speed of the magnet moving in the voice coil, that is, the speed of pressing the switch component.

Specifically, the generated voltage is proportional to the speed at which the magnetic flux in the voice coil changes due to the motion of the magnet. Also, since the power is expressed as (power W) = (voltage ^V2 ) / (voice coil resistance R), when the moving speed of the magnet in the voice coil (or the voice coil in the magnet) is slow, the generated voltage is It was too low to generate enough power.

Furthermore, since the speed at which the switch is pressed varies depending on the user, the amount of power that can be generated also varies, and there have been cases where the required amount of power cannot be generated.

The present invention has been made in view of the above-mentioned problems, and a power generation mechanism capable of generating a constant amount of electric power with high efficiency no matter how slow the power is operated and capable of performing a reliable switching operation. and to provide a power generation method.

The above problems are solved by the present invention described below. That is, the power generation mechanism of the present invention is formed from at least a first movable part, a second movable part, a torsion coil spring, a generator, and a housing, and the first movable part covers at least part of the periphery of the transmission wheel. a gear with teeth formed on the first center shaft, the second movable part being a gear with teeth formed on at least a portion of the circumference of the transmission wheel; A torsion coil spring rotatably supported on the central shaft, the torsion coil spring having at least a first winding portion and a second winding portion, the first winding portion being wound on the first central shaft; One end of the one turn is a free end and the other end is connected to either the first movable part, the first central shaft, or the second turn, and the first turn Due to the torsional shape and the contact of the free end of the first winding portion with the housing, the initial elastic energy ie1 is applied to the first winding portion in a state where no force is transmitted from the outside of the power generation mechanism, and the second winding portion is wound around the first central axis in a direction opposite to that of the first winding, one end of the second winding is a free end and the other end is the first movable part, the first It is connected to either the central shaft or the first winding portion, and the twisted shape of the second winding portion and the free end of the second winding portion come into contact with the housing, so that force is applied from the outside of the power generation mechanism. The initial elastic energy ie2 is applied to the second winding portion in a non-transmitted state, the absolute value of the initial elastic energy ie2 is set equal to the absolute value of the initial elastic energy ie1, and the axial direction of the first central axis and the The axial directions of the shaft of the generator are parallel to each other, and the first central shaft and the shaft of the generator are connected by two spur gears, or the axial direction of the first central shaft and the axial direction of the shaft of the generator are connected to each other. The first center shaft and the shaft of the generator are connected by two bevel gears, and the force is transmitted from the outside of the power generation mechanism to the second movable part through the second center shaft, and the second The movable part is rotated by a certain amount, the teeth of the first movable part and the teeth of the second movable part are engaged and interlocked, the first movable part is rotated by a certain amount, and the rotation of the first movable part by the certain amount causes the first winding. The rotating part is twisted, elastic energy ie12 due to the twisting is accumulated in the first rotating part, and after the first moving part rotates by a certain amount, the teeth of the first moving part and the second moving part are disengaged. , the elastic energy ie12 rotates the first movable part by a certain amount in the opposite direction to rotate the first center shaft, the rotation of the first center shaft is transmitted, the shaft of the generator is rotated, and the power is generated by the generator. At the same time as the rotation of the first central shaft causes the free end of the second winding portion to come into contact with the housing to stop the movement of the free end, the initial elastic energy ie1 and the initial elastic energy ie2 cause the first winding to generate power. When the central shaft is rotated and the gear ratio between the two spur gears or bevel gears connecting the first central shaft and the generator shaft is 50% or more of the peak electric energy on the generator shaft 100 It is characterized by a gear ratio that can generate electric energy of 10% or less.

Further, in the power generation method using the power generation mechanism of the present invention, the power generation mechanism is formed from at least a first movable part, a second movable part, a torsion coil spring, a generator, and a housing, and the first movable part is a transmission wheel. A gear having teeth formed on at least a portion of the periphery of the transmission wheel, and being rotatably supported on the first central shaft, the second movable part being a gear having teeth formed on at least a portion of the periphery of the transmission wheel; A torsion coil spring rotatably journalled about a second central shaft and having at least a first winding portion and a second winding portion, the first winding portion wound about the first central shaft, and the first winding portion One end of the part is a free end and the other end is connected to either the first movable part, the first central shaft, or the second winding part, and the torsion shape of the first winding part and the By bringing the free end of the first winding portion into contact with the housing, the initial elastic energy ie1 is applied to the first winding portion without transmitting force from the outside of the power generation mechanism, and the second winding portion is connected to the first winding portion. One end of the second winding portion is a free end, and the other end is the first movable part, the first central shaft, or the first center shaft. By connecting one of the windings and bringing the twisted shape of the second winding and the free end of the second winding into contact with the housing, the initial elastic energy ie2 is applied to the second winding portion, the absolute value of the initial elastic energy ie2 is set equal to the absolute value of the initial elastic energy ie1, and the axial direction of the first central axis and the axial direction of the shaft of the generator are parallel to each other The first center shaft and the shaft of the generator are connected by two spur gears, or the axial direction of the first center shaft and the shaft of the generator are made non-parallel to each other to connect the first center shaft and the shaft of the generator. A force is transmitted from the outside of the power generation mechanism to the second movable part through the second central shaft to rotate the second movable part by a certain amount, and the teeth of the first movable part and the second movable part are connected by two bevel gears. The teeth of the movable parts are meshed and interlocked to rotate the first movable part by a certain amount. After the first movable part rotates by a certain amount, the teeth of the first and second movable parts are disengaged, and the elastic energy ie12 rotates the first movable part in the opposite direction by a certain amount. rotates the first central shaft, transmits the rotation of the first central shaft to rotate the shaft of the generator, generates electric power with the generator, and generates power by rotating the first central shaft The free end of the wound part is brought into contact with the housing to stop the movement of the free end, the first central shaft is rotated by the initial elastic energy ie1 and the initial elastic energy ie2, and the first central shaft and the shaft of the generator are connected. The gear ratio between the two spur gears or between the bevel gears is set to a gear ratio that can generate 50% or more and 100% or less of the peak power in the shaft of the generator. do.

According to the power generation mechanism or the power generation method of the present invention, since the torsion coil spring is included, elastic energy ie12 is accumulated in the first winding portion due to the twisting of the first winding portion, and then the elastic energy ie12 is released. It is possible to generate electricity with a generator. Therefore, no matter how slow the force at which the second movable part is rotated to operate the power generation mechanism, a constant amount of electric power can be generated, and a reliable switching operation can be performed.

Furthermore, by using a gear as a forming part of the power generation mechanism, the power generation mechanism can be operated by meshing the teeth of the first movable part and the second movable part. Therefore, since it is possible to suppress or prevent the occurrence of operation loss, it is possible to generate a constant amount of electric power in any application and usage conditions, and it is possible to perform a reliable switching operation, which is preferable.

Furthermore, the power generation mechanism is formed only from simple parts such as gears, torsion coil springs, generators, and housings. Therefore, it is possible to form a power generation mechanism that is excellent in weather resistance and reliability, generates a constant amount of electric power in any application and under any usage conditions, and can perform a reliable switching operation.

Furthermore, by setting the gear ratio between the two spur gears or between the bevel gears that connect the first central shaft and the generator shaft, the electric energy of 50% or more and 100% or less of the peak electric energy (mJ) It becomes possible to generate electricity. Therefore, the elastic energy ie12 or ie22 accumulated in the first winding portion or the second winding portion can be converted into power generation by the generator with high efficiency, and a power generation mechanism capable of generating a certain amount of power (mJ) or more. And the power generation method can be realized.

1 is a plan view showing the configuration of a power generation mechanism according to an embodiment and an example of the present invention; FIG. 2 is a perspective view of the first movable part, the first central shaft, the torsion coil spring, the second movable part, and the housing in the power generation mechanism of FIG. 1; FIG. 2 is a graph showing the gradients of the spring constants of the first winding portion and the second winding portion and the magnitudes of initial elastic energies ie1 and ie2 applied to each winding portion of the torsion coil spring shown in FIG. 1; The solid line is the first winding portion, and the dotted line is the second winding portion. (a) Extract the first movable part, the first center shaft, the torsion coil spring, the second movable part, and the second center shaft in the power generation mechanism of Fig. 1, and the initial state of each part from the X1 direction shown in Fig. 2 It is a schematic diagram shown. (b) A schematic diagram showing a state in which the housing is incorporated in (a) of FIG. 5(a) is a schematic diagram showing a state in which the second movable part and the first movable part are rotated from the state in FIG. 4; FIG. (b) A schematic diagram showing a state in which the housing is incorporated in (a) of FIG. 6(a) is a schematic diagram showing a state in which the first movable component is rotated in the opposite direction by elastic energy ie12 from the state in FIG. 5; FIG. (b) A schematic diagram showing a state in which the housing is incorporated in (a) of FIG. 6(a) is a schematic diagram showing the state of FIG. 6(a) from the X2 direction shown in FIG. 2. FIG. 7A is a schematic diagram showing a state in which the second movable part and the first movable part are rotated in opposite directions from the state shown in FIG. 6; FIG. (b) A schematic diagram showing a state in which the housing is incorporated in (a) of FIG. 8A is a schematic diagram showing the state of FIG. 8A from the X2 direction shown in FIG. 2. FIG. 2. It is explanatory drawing which showed each reference circle of the two spur gears 7 and 8 in the electric power generating mechanism of FIG. 1 from the X1 direction shown in FIG. 4 is a graph of gear ratio-power consumption (mJ) according to an example of the present invention. FIG. 5 is a plan view showing the configuration of a power generation mechanism according to a modification of the embodiment of the present invention;

A first feature of this embodiment is that in a power generation mechanism that generates power by switching operation without including a power source, the power generation mechanism includes at least a first movable part, a second movable part, a torsion coil spring, a generator, and a housing. wherein the first movable part is a gear having teeth formed on at least a portion of the periphery of the transmission wheel and is rotatably supported on the first central shaft; and the second movable part is the transmission A toothed gear formed on at least a portion of the circumference of the wheel and rotatably supported on a second central shaft, the torsion coil spring having at least a first turn and a second turn. , a first winding wound around a first central shaft, one end of the first winding being a free end and the other end being the first movable part, the first central shaft, or the first It is connected to either one of the two winding parts, and the twisted shape of the first winding part and the free end of the first winding part contact the housing, so that the power is not transmitted from the outside of the power generation mechanism at the initial stage. The elastic energy ie1 is applied to the first winding, the second winding is wound on the first central axis in the opposite direction to the first winding, and one side of the second winding is wound. One end is a free end and the other end is connected to either the first movable part, the first central shaft, or the first winding, and the twist shape of the second winding and the second winding Since the free end of the portion contacts the housing, the initial elastic energy ie2 is applied to the second winding portion in a state where no force is transmitted from the outside of the generator mechanism, and the absolute value of the initial elastic energy ie2 is the initial elastic energy It is set equal to the absolute value of ie1, the axial direction of the first central shaft and the axial direction of the shaft of the generator are configured to be parallel to each other, and the first central shaft and the shaft of the generator are connected by two spur gears. Or, the axial direction of the first central shaft and the axial direction of the shaft of the generator are configured to be non-parallel to each other, and the first central shaft and the shaft of the generator are connected by two bevel gears. force is transmitted to the second movable part through the two central shafts, the second movable part is rotated by a certain amount, the teeth of the first movable part and the teeth of the second movable part mesh and interlock, and the first movable part is rotated by a certain amount, the first winding part is twisted by the rotation of the first movable part by a certain amount, elastic energy ie12 due to the twist is accumulated in the first winding part, and the first movable part is rotated by a certain amount Later, the teeth of the first movable part and the second movable part are disengaged, and the elastic energy ie12 causes the first movable part to rotate in the opposite direction by a certain amount, thereby rotating the first central shaft. The rotation is transmitted to rotate the shaft of the generator, and the generator generates electric power to generate electricity. The end motion is stopped, the first central shaft is rotated by the initial elastic energy ie1 and the initial elastic energy ie2, the teeth between the two spur or bevel gears connecting the first central shaft and the shaft of the generator The number ratio is a gear ratio that can generate electric energy of 50% or more and 100% or less of the peak electric energy in the shaft of the generator.

A second feature is a power generation method using a power generation mechanism that generates power by switching operation without including a power supply, wherein the power generation mechanism comprises at least a first movable part, a second movable part, a torsion coil spring, a generator, and a housing. , the first movable part is a gear having teeth formed on at least a portion of the periphery of the transmission wheel and is rotatably supported on the first central shaft, and the second movable part is the periphery of the transmission wheel A gear at least partially toothed and rotatably supported on a second central shaft, a torsion coil spring having at least a first turn and a second turn, the first turn being the first turn Winding around a first central axis, with one end of the first winding being a free end and the other end being either the first movable part, the first central axis or the second winding. By bringing the twisted shape of the first winding portion and the free end of the first winding portion into contact with the housing, the initial elastic energy ie1 is applied to the first winding portion without transmitting force from the outside of the power generation mechanism. The second winding portion is wound around the first central axis in the opposite direction to the first winding portion, one end of the second winding portion is a free end, and the other end is a first winding portion. 1 movable part, the first central shaft, or the first winding portion, and by bringing the twisted shape of the second winding portion and the free end of the second winding portion into contact with the housing, the power generating mechanism An initial elastic energy ie2 is applied to the second winding portion in a state where no force is transmitted from the outside, the absolute value of the initial elastic energy ie2 is set equal to the absolute value of the initial elastic energy ie1, and the axial direction of the first central axis and the The axial direction of the shaft of the generator is parallel to each other, and the first central shaft and the shaft of the generator are connected by two spur gears, or the axial direction of the first central shaft and the axial direction of the shaft of the generator are non-parallel to each other. Then, the first central shaft and the shaft of the generator are connected by two bevel gears, a force is transmitted from the outside of the generator mechanism to the second movable part through the second central shaft, and the second movable part is moved by a certain amount. The teeth of the first movable part and the teeth of the second movable part are engaged and interlocked to rotate the first movable part by a certain amount, and the first winding part is rotated by the fixed amount of rotation of the first movable part. After twisting and accumulating the elastic energy ie12 due to the twisting in the first winding part and rotating the first movable part by a certain amount, the teeth of the first movable part and the second movable part are disengaged, and the elastic energy ie12 is released. rotates the first movable part in the reverse direction by a certain amount to rotate the first central shaft, transmits the rotation of the first central shaft to rotate the shaft of the generator, and generates electric power with the generator. while the rotation of the first central shaft brings the free end of the second winding portion into contact with the housing to stop the movement of the free end, and rotates the first central shaft by the initial elastic energy ie1 and the initial elastic energy ie2; The gear ratio between the two spur gears or between the bevel gears that connect the first central shaft and the shaft of the generator is defined as the amount of power that is 50% or more and 100% or less of the peak power amount on the shaft of the generator. The gear ratio should be such that power can be generated.

In the present invention, the "fixed amount" in the amount of rotation of the first movable part and the second movable part is not necessarily the same. It also includes the difference in rotation angle caused by the difference in

In addition, the "fixed amount" in the amount of rotation of the first movable part and the first central shaft and the "fixed amount" in the amount of rotation of the shaft of the generator are different amounts of rotation.

The power generation mechanism or power generation method described above can be used for lighting, an alarm device for vehicles, or the like.

In the present invention, the torque (N mm) applied or accumulated in the spring, the first torsion coil spring (first winding portion), or the second torsion coil spring (second winding portion) is referred to as "elastic energy" (mJ). ) to explain. Therefore, the vertical axis in FIG. 3 is also written as "elastic energy (mJ)" instead of "torque (N·mm)".

A power generation mechanism 1 according to an embodiment of the present invention and a power generation method by the power generation mechanism 1 will be described below with reference to FIGS. 1 to 10. FIG. As shown in FIGS. 1 and 2, the power generation mechanism 1 includes at least a first movable part 2a, a second movable part 3a, a torsion coil spring 4, a generator 5, and a housing 6. As shown in FIG. Further, inside the housing 6, at least the first movable part 2a, the second movable part 3a, the torsion coil spring 4 and the generator 5 are accommodated. The other end side of the second central shaft 3b (that is, the opposite end side to the one end side where the second movable part 3a is pivotally supported) passes through a hole provided in the housing 6 to the outside of the housing 6. protruded.

The first movable part 2a is a gear in which a plurality of teeth are formed on at least a part of the periphery of a cam-shaped transmission wheel, and is rotatably supported around a first central axis 2b. Both ends of the first central shaft 2 b are fixed inside the housing 6 .

The second movable part 3a is also a gear having a plurality of teeth formed on at least a part of the periphery of the cam-shaped transmission wheel, and is rotatably supported around the second central shaft 3b.

The tooth profiles of the first movable part 2a and the second movable part 3a are both involute tooth profiles in this embodiment. By using an involute tooth profile, even if the center distance between the gears (the linear distance between the center of the first center shaft 2b and the center of the second center shaft 3b) changes slightly, the meshing can be maintained properly. , is preferable because it can be easily produced and has little slippage. It is also possible to replace the tooth profile 2a or 3a with an involute tooth profile and form a cycloid tooth profile.

The torsion coil spring 4 is a spring having at least two winding portions, a first winding portion and a second winding portion. In the power generation mechanism 1, two torsion coil springs (a first torsion coil spring 4a and a second torsion coil spring 4b) each having a first winding portion and a second winding portion are provided.

As shown in FIG. 4, the winding portion (first winding portion) of the first torsion coil spring 4a is wound around the first central shaft 2b, and one end of the first winding portion is the free end 4a1. is. On the other hand, the other end is connected to any one of the first movable part 2a, the first center shaft 2b, or the second winding part, and in the power generation mechanism 1 of this embodiment, it is connected to the first movable part 2a. It is

Further, the twisted shape of the first winding portion and the free end 4a1 of the first winding portion are in contact with the side surface of the housing 6. As shown in FIG. Due to this contact, the initial elastic energy ie1 (mJ) is applied to the first winding portion (that is, the first torsion coil spring 4a) in a state where force is not transmitted from the outside of the power generation mechanism.

On the other hand, as shown in FIG. 7, the winding portion (second winding portion) of the second torsion coil spring 4b is wound around the first central shaft 2b in the opposite direction to the first winding portion. One end of the two turns is a free end 4b1. The other end is connected to either the first movable part 2a, the first central shaft 2b, or the first winding part, and in the power generation mechanism 1 of this embodiment, it is connected to the first movable part 2a. ing.

Furthermore, the twisted shape of the second winding portion and the free end 4b1 of the second winding portion are in contact with the side surface of the housing 6. As shown in FIG. Due to this contact, the initial elastic energy ie2 (mJ) is applied to the second winding portion (that is, the second torsion coil spring 4b) in a state where force is not transmitted from the outside of the power generation mechanism.

As shown in the graph of FIG. 3, the absolute value of ie2 is set equal to the absolute value of ie1. Furthermore, as can be seen from the fact that the slopes of the graphs differ for each winding portion, the magnitude relationship K1>K2 holds between the spring constant K1 of the first winding portion and the spring constant K2 of the second winding portion. ing.

In the power generation mechanism 1, the other ends of the first winding portion and the second winding portion are connected to the first movable part 2a, but by connecting the other ends to each other, A single torsion coil spring having a first winding portion and a second winding portion may be used instead of the torsion coil spring 4 .

Further, as shown in FIG. 1, the axial direction of the first central shaft 2b and the axial direction of the shaft 5a of the generator 5 are configured to be parallel to each other, and the first movable part 2a is axially supported on the first central shaft 2b. A spur gear 7 is journaled on the opposite side. Further, a spur gear 8 is journalled on the end of the shaft 5a. Therefore, the first central shaft 2b and the shaft 5a of the generator 5 are connected by two spur gears 7 and 8, as shown in FIGS. 1 and 10, illustration of the first movable part 2a, the second movable part 3a, the end of the shaft 5a, and the tooth profiles of the spur gears 7 and 8 are omitted. FIG. 10 is an explanatory view showing the state in which the reference circles of the two spur gears 7 and 8 are in contact with each other, viewed from the X1 direction shown in FIG.

The generator 5 is a motor including at least a coil and a magnet, and is of a type in which either the coil or the magnet rotates as the shaft 5a rotates.

The housing 6 is a component having a rectangular bathtub shape, and is provided with a plurality of partition plates 6a for fixing the generator 5 and side components inside. The housing 6 may be a single integrally molded component, or may be changed to a combined component consisting of several side components, bottom components, and the like.

Materials for the first movable part 2a, the second movable part 3a, the spur gears 7 and 8, and the housing 6 can be selected arbitrarily. Good luck.

Next, the operating principle of self-power generation in the power generation mechanism 1 will be described. For example, a switch component (not shown) is attached to the second central shaft 3b, and a force such as a human power or a pressing force from an object to be generated for each use application is applied to the switch component from the outside of the power generation mechanism to push the switch component. As a result, the second central shaft 3b is rotated.

Due to the rotation of the second central shaft 3b, a force is transmitted from the outside of the generator mechanism 1 to the second movable part 3a through the second central shaft 3b, and the second movable part 3a moves by a certain amount (in FIGS. 4 and 5, , about 35° to 45° counterclockwise). Therefore, the second movable part 3a functions as a switch part in the power generation mechanism 1, and is a part that is moved by the switching operation.

Before the rotation of the second movable part 3a is transmitted to the first movable part 2a, the first movable part 2a is held at a position where ie2 and ie1 are balanced as shown in the graph of FIG. Next, when the second movable part 3a rotates, the teeth of the first movable part 2a and the teeth of the second movable part 3a mesh with each other to start interlocking.

Force continues to be transmitted to the second movable part 3a and the first movable part 2a continues to rotate while the teeth of the first and second movable parts 2a and 3a are engaged with each other. Therefore, the first movable part 2a is rotated by a certain amount until the teeth of the first movable part 2a and the second movable part 3a are disengaged (in the case of this embodiment, about 70 degrees in FIGS. 4 and 5). ~80° clockwise rotation).

As the first movable part 2a rotates by a certain amount, the first central shaft 2b and the first winding part also rotate by a certain amount in conjunction with the first movable part 2a. However, since the free end 4a1 of the first winding portion is in contact with the side surface of the housing 6, the movement is stopped. On the other hand, the other end side of the first wound portion is connected to the first movable part 2a, so it rotates as the first movable part 2a rotates by a certain amount. Therefore, the first winding portion is twisted, and elastic energy ie12 (mJ) is accumulated in the first winding portion due to the torsion caused by the meshing of the teeth of the first movable part 2a and the second movable part 3a. .

The torsion of the first winding is maintained as long as force continues to be transmitted to the second movable part 3a and the teeth of the first and second movable parts 2a and 3a are engaged with each other. Therefore, the elastic energy ie12 of the first winding portion is maximized just before the teeth of the first movable part 2a and the second movable part 3a are disengaged. In this embodiment, the elastic energy ie12 is maximized when the first movable part 2a and the first center shaft 2b are rotated by about 70° to 80°.

After the first movable part 2a has rotated a certain amount, the teeth of the first movable part 2a and the second movable part 3a are disengaged as shown in FIG. As a result, the deformation of the first winding portion due to the twisting is released and the deformation of the first winding portion is released. , ie12 cause the first movable part 2a to rotate in the opposite direction by a certain amount. In this embodiment, the rotation is approximately 70° to 80° counterclockwise (see FIGS. 5 and 6). That is, ie12 is converted into a constant amount of reverse rotation of the first movable part 2a.

As the first movable part 2a rotates in the opposite direction by a certain amount, the first central shaft 2b also rotates in the opposite direction by a certain amount, and the spur gear 7 rotates in conjunction with it. is rotated by a constant amount and a constant speed. In addition, depending on the gear ratio of the spur gears 7 and 8, the amount of rotation of the first movable part 2a and the first center shaft 2b is "constant amount" and the amount of rotation of the shaft 5a of the generator 5 is "constant amount". Quantity" is different. Electric power is generated inside the generator 5 by rotating the shaft 5a at a constant amount and at a constant speed. With this electric power, it is possible to activate a wireless communication device such as an infrared ray that can be optionally installed separately according to the use of the power generation mechanism 1 .

The amount of rotation and speed of the shaft 5a depends on the amount of reverse rotation of the first moving part 2a, i.e. the maximum value of ie12, and the gear ratio of the spur gears 7 and 8. ie12 can be set to an arbitrary fixed amount according to the arc length of the pitch circle where the teeth of the first movable part 2a and the second movable part 3a mesh with each other. On the other hand, the gear ratio of the spur gears 7 and 8 can also be set to any constant amount. Therefore, since the amount of rotation of the shaft 5a can be set at an arbitrary constant amount according to the specifications of each power generation mechanism 1, the amount of electric power generated by the generator 5 is also affected by the external force transmitted to the second movable part 3a. A constant value can be set regardless of the speed.

As described above, according to the power generation mechanism 1 or the power generation method by the power generation mechanism 1, by including the torsion coil spring 4, ie12 is accumulated in the first winding portion by twisting, and then ie12 is released to generate power with the generator 5. can do Therefore, no matter how slow the force at which the second movable part 3a rotates and the power generation mechanism 1 operates, a constant amount of electric power can be generated, and a reliable switching operation can be performed.

Furthermore, by using gears as forming parts of the power generation mechanism 1, the power generation mechanism 1 can be operated by meshing the teeth of the first movable part 2a and the second movable part 3a. Therefore, since it is possible to suppress or prevent the occurrence of operation loss, it is possible to generate a constant amount of electric power in any application and usage conditions, and it is possible to perform a reliable switching operation, which is preferable.

Furthermore, the power generation mechanism 1 is formed only of simple parts such as gears (the first movable part 2a and the second movable part 3a), the torsion coil spring 4, the generator 5, and the housing 6. FIG. Therefore, it is possible to form the power generating mechanism 1 that is excellent in weather resistance and reliability, generates a constant amount of electric power in any application and usage conditions, and can perform a reliable switching operation.

Next, as the first center shaft 2b rotates in the opposite direction, the free end 4b1 of the second winding portion also moves along with the rotation, and the free end 4b1 of the second winding portion moves toward the side surface of the housing 6. The contact stops the movement of the free end 4b1. On the other hand, the other end side of the second wound portion is connected to the first movable part 2a, so it rotates as the first movable part 2a rotates in the opposite direction by a certain amount. Therefore, when the movement of the free end 4b1 stops, the second winding portion is twisted, and elastic energy due to the twisting starts to be accumulated in the second winding portion.

However, since the teeth of the first movable part 2a and the second movable part 3a are already out of mesh at this point, the twist of the second winding is not retained and immediately released. Therefore, elastic energy is not stored in the second winding portion at this point. On the other hand, with the free end 4b1 of the second winding portion, which is held in contact with the side surface of the housing 6, as a fulcrum, the first center shaft 2b is rotated only by ie1 and ie2, and ie1 and ie2 become equal. It is held in a balanced rotational position. This rotation of the first central shaft 2b restores the first movable part 2a to its initial state (the state before the teeth of the first movable part 2a and the teeth of the second movable part 3a mesh with each other).

Furthermore, by establishing a magnitude relationship of K1>K2 between the spring constant K1 of the first winding portion and the spring constant K2 of the second winding portion, the rotation of the first central shaft 2b causes the first movable part to rotate. 2a is returned to the initial state (the state before the teeth of the first movable part 2a and the teeth of the second movable part 3a mesh), the accumulation of elastic energy ie12 or more in the second winding portion is suppressed. be done. Therefore, in addition to the effects described above, it is possible to prevent damage to the second winding portion due to accumulation of excessive elastic energy and to suppress unnecessary power generation by the generator 5, thereby ensuring a more reliable switching operation of the power generation mechanism. , the durability and reliability can be improved.

Furthermore, by housing the parts (the first movable part 2a, the second movable part 3a, the torsion coil spring 4, the generator 5) forming the power generation mechanism 1 in the housing 6, in addition to the above effects, the first movable part 2a It is possible to secure dustproofness and watertightness in the transmission part between and the second movable part 3a and in each part. Moreover, the rust prevention effect of a gear part is also acquired. Therefore, the weather resistance and reliability of the power generation mechanism 1 can be further improved, and a more reliable switching operation can be realized.

Next, when a force such as a human force or a pressing force from an object to be used for power generation is applied from the outside of the power generation mechanism 1 in the opposite direction, the state shown in FIG. 7 changes to the state shown in FIGS. 8 and 9. The second movable part 3a is rotated in the opposite direction by a certain amount (which is about 35° to 45° clockwise in FIG. 8).

When the second movable part 3a rotates in the opposite direction by a certain amount, the teeth of the first movable part 2a and the teeth of the second movable part 3a are again engaged with each other, and the first movable part 2a rotates in the opposite direction by a certain amount. It is rotated (in this embodiment, the rotation is approximately 70° to 80° counterclockwise; see FIGS. 6 and 8). The amount of rotation of the first movable part 2a in the opposite direction depends on the fixed amount of rotation of the second movable part 3a in the opposite direction.

When the first movable part 2a rotates in the opposite direction by a certain amount, the first central shaft 2b and the second winding part also rotate by a certain amount in conjunction with the first movable part 2a. However, the free end 4b1 of the second winding portion is in contact with the side surface of the housing 6, and is thus prevented from moving. On the other hand, the other end side of the second wound portion is connected to the first movable part 2a, so it rotates as the first movable part 2a rotates by a certain amount. Therefore, the second winding portion is twisted, and elastic energy ie22 (mJ) is accumulated in the second winding portion due to the torsion caused by the engagement of the teeth of the first movable part 2a and the second movable part 3a. .

The torsion of the second winding portion is maintained while the force in the opposite direction continues to be transmitted to the second movable part 3a and the teeth of the first movable part 2a and the second movable part 3a are engaged with each other. . Therefore, the elastic energy ie22 of the second winding portion is maximized just before the teeth of the first movable part 2a and the second movable part 3a are disengaged. In this embodiment, the elastic energy ie22 becomes maximum when the first movable part 2a and the first center shaft 2b are rotated about 70° to 80°.

After the first movable part 2a rotates in the opposite direction by a certain amount, the teeth of the first movable part 2a and the second movable part 3a are disengaged as shown in FIGS. As a result, the deformation of the second winding portion due to twisting is released, the deformation of the second winding portion is released, and the free end 4b1 of the second winding portion, which has been in contact with the side surface of the housing 6 and stopped, is used as a fulcrum. , ie22 rotate the first central axis 2b by a certain amount. (In this embodiment, the rotation is about 70° to 80° clockwise. See FIGS. 8 and 4.). That is, ie22 is converted into a constant amount of rotation of the first central axis 2b.

As the first central shaft 2b rotates by a certain amount, the spur gear 7 is also connected and rotated by a certain amount, and the shaft 5a is rotated by a certain amount and at a constant speed via the spur gear 8. As shown in FIG. The amount of rotation and speed of the shaft 5a depends on the amount of reverse rotation of the first moving part 2a, i.e. the maximum value of ie22, and the gear ratio of the spur gears 7 and 8.

Assuming that the desired voltage (counter electromotive force) [V] to be generated by the generator 5 is A [V], in order to obtain the rotation speed of the shaft 5a and the first central shaft 2b necessary for generating A [V] is required to have an elastic energy ie12 and a tooth ratio of the spur gears 8 and 7 (the number of teeth of the spur gear 8 to the number of teeth of the spur gear 7) of 1:2.467 or more. However, even in such a case, the slope of the spring constant of the second winding portion is set to be gentler than the slope of the spring constant of the first winding portion (that is, K1>K2) from the graph of FIG. Therefore, the elastic energy accumulated in the second winding portion can be less than ie12 due to the same torsional angle as that of the first winding portion. As described above, unnecessary power generation operation by the power generator 5 is suppressed.

Further, by rotating the first central shaft 2b by a certain amount, the free end 4a1 of the first winding portion contacts the side surface of the housing 6 again, and the movement of the free end 4a1 is stopped. On the other hand, the other end side of the first winding portion is connected to the first central shaft 2b, so it rotates as the first central shaft 2b rotates by a certain amount. Therefore, when the movement of the free end 4a1 stops, the first winding portion is twisted, and elastic energy due to the twisting starts to be accumulated in the first winding portion.

However, since the teeth of the first movable part 2a and the second movable part 3a are already out of mesh at this point, the twist of the first winding is not retained and immediately released. Therefore, elastic energy is not stored in the first winding portion at this point. On the other hand, with the free end 4a1 of the first winding portion, which is stopped in contact with the side surface of the housing 6, as a fulcrum, the first center shaft 2b is rotated only by ie1 and ie2, and ie1 and ie2 become equal. It is held in a balanced rotational position. This rotation of the first central shaft 2b restores the first movable part 2a to its initial state (the state before the teeth of the first movable part 2a and the teeth of the second movable part 3a mesh with each other).

As described in the present embodiment, the "constant amount" of the amount of rotation of the first movable part 2a and the second movable part 3a are not necessarily the same. As in this embodiment, the "fixed amount" may differ depending on the direction of rotation of each part. In addition, the difference in the dimensions of each part (2a, 3a) also causes a difference in the rotation angle.

Also referring to FIG. 12, a modification of the embodiment of the present invention will be described. The power generation mechanism 1 shown in FIG. 12 is configured such that the axial direction of the first central shaft 2b and the axial direction of the shaft 5a of the generator 5 are non-parallel to each other, and the first central shaft 2b and the shaft 5a form two bevel gears. Connected by 9 and 10. FIG. 12 illustrates a form in which the axial directions of the first central axis 2b and the shaft 5a are perpendicular to each other. The tooth profiles of the bevel gears 9 and 10 are omitted from the illustration.

Materials for the bevel gears 9 and 10 can be selected arbitrarily. For example, plastics, non-lubricating slidable resins, stainless steel, and steel may be used. According to the gear ratio of the bevel gears 9 and 10, the "constant amount" in the amount of rotation of the first movable part 2a and the first center shaft 2b and the "constant amount" in the amount of rotation of the shaft 5a are Each is different. The amount of rotation and speed of the shaft 5a also depends on the amount of reverse rotation of the first movable part 2a, ie the maximum value of ie22, and the gear ratio of the bevel gears 9 and 10. FIG.

As the bevel gears 9 and 10, straight bevel gears, normal bevel gears, acute angle bevel gears, obtuse angle bevel gears, etc. can be used.

Of the spur gears 7 and 8 and the bevel gears 9 and 10, the spur gears 7 and 8 are the more preferred embodiment. The reason for this is that by connecting the first central shaft 2b and the shaft 5a with the two spur gears 7 and 8, the axial direction of the first central shaft 2b and the axial direction of the shaft 5a of the generator 5 are configured to be parallel to each other. This makes it possible to eliminate the use of conversion parts in the axial direction. This is because there is a margin in the tolerance of the power generation mechanism 1, and the yield of the power generation mechanism 1 and the reliability of the power generation operation can be improved.

The gear ratio between the two spur gears 7 and 8 or between the bevel gears 9 and 10 can generate 50% or more and 100% or less of the peak power generated by the rotation of the shaft 5a of the generator 5. or the gear ratio that can generate 100% of the peak power.

By setting the gear ratio between the two spur gears 7 and 8 or between the bevel gears 9 and 10 in this way, the electric energy of 50% or more and 100% or less of the peak electric energy (mJ) can be generated by the generator 5. It becomes possible to generate electricity. Therefore, ie12 or ie22 accumulated in the first winding portion or the second winding portion can be converted into power generation by the generator 5 with high efficiency, and a power generation mechanism capable of generating a certain amount or more of electric power (mJ) 1 and the power generation method can be realized.

The peak power amount is the maximum amount of power that can be generated by the generator 5 and extracted from the shaft 5a, and refers to the maximum amount of power that can be generated by the generator 5 due to the rotation of the shaft 5a. .

The gear ratio between the two spur gears 7 and 8 or between the bevel gears 9 and 10 is described with the spur gear 8 or the bevel gear 10 being 1.0. That is, assuming that the number of teeth of the spur gear 8 or the bevel gear 10 is 1, the number of teeth of the spur gear 7 or the bevel gear 9 is set to 2.467 to 7.5. The gear ratio is therefore between 1:2.467 and 1:7.5.

The setting range of the gear ratio between the spur gears 7 and 8 is the specification of the generator 5, and the minimum power amount (mJ) that can obtain at least 50% or more of the peak power amount from the generator 5. is set by each reference circle diameter d7, d8 of the spur gear 7 or 8 and the module. By setting the reference circle diameters d7 and d8 and the module in this way, it is possible to prevent the spur gears 7 and 8 from increasing in size, and to prevent the outer dimensions of the housing 6 containing the spur gears 7 and 8 from increasing. . Moreover, when it is necessary to set the external dimensions of the housing 6 within a certain range, it is possible to eliminate the extra space occupied by the spur gears 7 and 8 inside the housing 6 .

It is desirable that the number of gears connecting the first central shaft 2b and the shaft 5a of the generator 5 is two as in the present invention. The reason for this is that when three or more gears are used, the backlash between the gears accumulates, causing a delay in the transmission of rotational motion between the gears in the first and final gears and a delay in the start of power generation. Further, as the gears are multi-staged, the space occupied by the gears inside the housing 6 is increased and the size of the housing 6 is increased.

Further, the generator 5 is not limited to a motor as long as it includes at least a coil and a magnet and generates electric power. When a motor is used for the generator 5, if the inertia of the motor is low, the gear ratio (ratio of the number of teeth of the spur gear 7 to the number of teeth of the spur gear 8) is also set low. A higher ratio should be set.

A one-way clutch (1-way clutch) may be used instead of the gears of the first movable part 2a or the second movable part.

EXAMPLES Examples according to the present invention will be described below, but the present invention is not limited only to the following examples.

1 to 10, the elastic energy of the first torsion coil spring 4a is 116.5 (mJ) at a rotation angle of 80.1°, and the second The elastic energy of the torsion coil spring 4b was set to 46.8 (mJ) at a rotation angle of 90.1°. A motor with an iron core was used for the generator 5 .

The two spur gears 7 and 8, which connect the first central shaft 2b and the shaft 5a of the generator 5, have a common module of 0.5. Further, the gear ratio between the two spur gears 7 and 8 is set to a gear ratio that can generate electric energy of 50% or more and 100% or less of the peak electric energy. The amount of electric power is a value obtained by measuring the voltage stored in the capacitor 430 (μF) with an oscilloscope. The number of teeth of the spur gear 8 in Examples 1 to 5 is 24 (Example 1), 16 (Example 2), 12 (Example 3), 12 (Example 4), and 12 (Example 5). set to On the other hand, the number of teeth of the spur gear 7 was set to 48 (Example 1), 56 (Example 2), 60 (Example 3), 72 (Example 4), and 90 (Example 5). Therefore, the ratio of the number of teeth of the spur gear 8 to the number of teeth of the spur gear 7 in each example is 1:2.0 (Example 1), 1:3.5 (Example 2), and 1:5.0 (Example 3). , 1:6.0 (Example 4) and 1:7.5 (Example 5).

As a comparative example, the number of teeth of the spur gear 8 was set to 48, and the number of teeth of the spur gear 7 was set to 24. Therefore, the ratio of the number of teeth of the spur gear 8 to the number of teeth of the spur gear 7 in the comparative example is 1:0.5.

Table 1 shows the measurement results of six electric energy (mJ) in each of Examples 1 to 5 and Comparative Example. And as a result of polynomial approximation with the six power amounts (mJ) in Table 1, if the power amount (mJ) is y and the gear ratio (the ratio of the number of teeth of the spur gear 7 to the number of teeth of the spur gear 8) is x , the following approximation formula (1) was obtained.

FIG. 11 shows the measurement results and approximation formulas for the six power amounts (mJ). From FIG. 11, it was confirmed that four of the six measurement points were on the approximation curve. The "tooth ratio" on the horizontal axis in the graph of Fig. 11 indicates the number of teeth of the spur gear 7 when the number of teeth of the spur gear 8 is assumed to be 1.0.

From Table 1 and FIG. 11, when the gear ratio is 1:7.5 or less, the ratio of the number of teeth of the spur gear 7 to the number of teeth of the spur gear 8 (that is, the number of teeth ratio on the horizontal axis in FIG. 11) increases by 1.0. It was confirmed that the amount of increase in power consumption was 1.0 (mJ) or more. However, when the gear ratio exceeds 1:7.5, even if the gear ratio on the horizontal axis in FIG. From the above measurement results, the applicant determined that if the gear ratio exceeds 1:7.5, the increase in electric energy corresponding to the increase in the gear ratio cannot be obtained.

Therefore, when the gear ratio on the horizontal axis of FIG. Add to the definition of peak power consumption. From FIG. 11, in this embodiment, 20.6 (mJ) at a gear ratio of 1:7.5 is regarded as the peak electric energy. Therefore, it was confirmed that 100% of the peak electric energy can be obtained with a gear ratio of 1:7.5.

From Fig. 11, it was found that power generation of 10.3 (mJ) or more, which is 50% of the peak power of 20.6 (mJ), can be generated when the gear ratio is in the range of 1:2.467 to 1:7.5. . When the gear ratio is less than 1:2.467, it is less than 10.3 (mJ) according to the above approximation formula, which is less than 50% of the peak power amount.

Furthermore, from Table 1 and Fig. 11, while the power consumption was 9.4 (mJ) at a gear ratio of 1:2.0, the power consumption was 13.8 (mJ) or more at a gear ratio of 1.0:3.5 or more. It was confirmed that Therefore, it was confirmed that at a gear ratio of 1.0:3.5 or more, the power amount exceeds 10.3 (mJ), which is 50% of the peak power amount of 20.6 (mJ). Therefore, within the range of 1:2.467 to 1:7.5, any gear ratio of 1:3.5, 1:5.0, 1:6.0, or 1:7.5 ensures 50% of the peak power consumption. It was confirmed that more electric energy could be obtained.

From FIG. 11, it is estimated that in the numerical range of the gear ratio exceeding 7.5, the amount of electric power does not exceed 20.6 (mJ) from the approximate expression. In the numerical range of the gear ratio exceeding 7.5, the size expansion of the spur gear 7 becomes remarkable, and the expansion of the housing 6 cannot be suppressed. Therefore, it is optimal to select a numerical range of the gear ratio of 2.467 to 7.5 to generate an electric energy of 50% or more and 100% or less of the peak electric energy of 20.6 (mJ).

When the power generation mechanism of this embodiment is used to determine whether or not there is a parked vehicle in a parking space for one vehicle, the power generation mechanism includes a tire contact plate that is separately connected to the second central shaft 3b. must be within approximately 2000mm. Since the contact plate requires a lateral width equal to or greater than the width of one tire, the housing 6 must be made as small as possible in consideration of the width dimension assigned to the contact plate. Downsizing of housing 6, generator 5 that can be housed in housing 6, winding diameter of first torsion coil spring 4a and second torsion coil spring 4b and elastic energy that can be generated, reference circle diameter of spur gears 7 and 8 As a result of considering d7 and d8 and the module, it was confirmed from the above approximation formula that a gear ratio of 1:2.467 or more is required in order to enable power generation of 50% or more of the peak power amount. When 10.3 (mJ) or more, which is 50% or more of the peak power amount, is generated, it is confirmed that the power generation mechanism can continuously determine the presence or absence of parked vehicles by wireless transmission. Therefore, it was found that it is most suitable for application of the power generation mechanism to the parking space of the car.
It should be noted that this embodiment is similarly established even when the bevel gears 9 and 10 are used.

1 power generation mechanism
2a First moving part
2b 1st central axis
3a second moving part
3b Second central shaft 4 Torsion coil spring
4a 1st torsion coil spring
4a1 Free end of the winding part of the first torsion coil spring
4b Second torsion coil spring
4b1 Free end of the winding part of the second torsion coil spring 5 Generator
5a Shaft 6 Housing
6a Partition plate 7, 8 Spur gear 9, 10 Bevel gear
d7 Reference circle diameter of spur gear 7
d8 Reference circle diameter of spur gear 8

Claims (10)

the generator mechanism is formed from at least a first movable part, a second movable part, a torsion coil spring, a generator, and a housing;
the first movable part is a gear having teeth formed on at least a part of the periphery of the transmission wheel, and is rotatably supported on the first central shaft;
the second movable part is a gear having teeth formed on at least a part of the periphery of the transmission wheel, and is rotatably supported on the second central shaft;
A torsion coil spring has at least a first turn and a second turn, the first turn being wound around the first central axis, and one end of the first turn being a free end. and the other end is connected to either the first movable part, the first central shaft, or the second winding,
Due to the twisted shape of the first winding portion and the contact of the free end of the first winding portion with the housing, the initial elastic energy ie1 is applied to the first winding portion in a state where no force is transmitted from the outside of the power generation mechanism. cage,
A second winding portion is wound around the first central axis in a direction opposite to that of the first winding portion, one end of the second winding portion being a free end and the other end being a first movable portion. connected to either the component, the first central shaft, or the first winding;
Due to the twisted shape of the second winding portion and the contact of the free end of the second winding portion with the housing, the initial elastic energy ie2 is applied to the second winding portion in a state where no force is transmitted from the outside of the power generation mechanism. cage,
The absolute value of the initial elastic energy ie2 is set equal to the absolute value of the initial elastic energy ie1,
The axial direction of the first central shaft and the axial direction of the shaft of the generator are configured to be parallel to each other, and the first central shaft and the shaft of the generator are connected by two spur gears, or the axial direction of the first central shaft and the power generation The axial directions of the shafts of the generator are configured to be non-parallel to each other, and the first central shaft and the shaft of the generator are connected by two bevel gears,
A force is transmitted from the outside of the power generation mechanism to the second movable part through the second central shaft, the second movable part is rotated by a certain amount, and the teeth of the first movable part and the teeth of the second movable part are engaged and interlocked. and the first movable part is rotated by a certain amount,
A certain amount of rotation of the first movable part twists the first winding portion, and elastic energy ie12 due to the twisting is accumulated in the first winding portion,
After the first movable part rotates by a certain amount, the teeth of the first movable part and the second movable part are disengaged, and the elastic energy ie12 rotates the first movable part in the opposite direction by a certain amount to rotate the first central axis. is rotated, the rotation of the first central shaft is transmitted, the shaft of the generator is rotated, and electric power is generated by the generator to generate power,
The rotation of the first central shaft causes the free end of the second wound portion to come into contact with the housing to stop the movement of the free end, and the first central shaft is rotated by the initial elastic energy ie1 and the initial elastic energy ie2,
The gear ratio between the two spur gears or between the bevel gears that connect the first central shaft and the shaft of the generator must be 50% or more and 100% or less of the peak power of the shaft of the generator. A power generation mechanism that is a gear ratio that can generate power. the number of teeth of the spur gear of the shaft of the generator to the number of teeth of the spur gear of the first central shaft, or the number of teeth of the bevel gear of the shaft of the generator to the number of teeth of the first central shaft 2. The generator mechanism according to claim 1, wherein said gear ratio is between 1:2.467 and 1:7.5. the number of teeth of the spur gear of the shaft of the generator to the number of teeth of the spur gear of the first central shaft, or the number of teeth of the bevel gear of the shaft of the generator to the number of teeth of the first central shaft 3. The power generating mechanism according to claim 2, wherein the gear ratio is any one of 1:3.5, 1:5.0, 1:6.0 and 1:7.5. The power generation mechanism according to any one of claims 1 to 3, wherein a gear ratio between the two spur gears or between the two bevel gears is the gear ratio that enables power generation of 100% of the peak power amount. the number of teeth of the spur gear of the shaft of the generator to the number of teeth of the spur gear of the first central shaft, or the number of teeth of the bevel gear of the shaft of the generator to the number of teeth of the first central shaft 5. The generator mechanism according to claim 4, wherein said gear ratio is 1:7.5. forming a power generation mechanism from at least a first movable part, a second movable part, a torsion coil spring, a generator, and a housing;
The first movable part is a gear having teeth formed on at least a part of the periphery of the transmission wheel, and is rotatably supported on the first central shaft;
The second movable part is a gear having teeth formed on at least a part of the periphery of the transmission wheel, and is rotatably supported on the second central shaft;
A torsion coil spring has at least a first winding portion and a second winding portion, the first winding portion being wound around the first central axis, and one end of the first winding portion being a free end. , connecting the other end to either the first movable part, the first central shaft, or the second winding;
By bringing the twisted shape of the first winding portion and the free end of the first winding portion into contact with the housing, the initial elastic energy ie1 is applied to the first winding portion without transmitting force from the outside of the power generation mechanism,
A second winding portion is wound around the first central axis in a direction opposite to that of the first winding portion, one end of the second winding portion is a free end, and the other end is a first movable part. , the first central axis, or the first winding,
By bringing the twisted shape of the second winding portion and the free end of the second winding portion into contact with the housing, the initial elastic energy ie2 is applied to the second winding portion without transmitting force from the outside of the power generation mechanism,
Set the absolute value of the initial elastic energy ie2 equal to the absolute value of the initial elastic energy ie1,
The axial direction of the first central shaft and the axial direction of the shaft of the generator are parallel to each other, and the first central shaft and the shaft of the generator are connected by two spur gears, or the axial direction of the first central shaft and the axial direction of the generator are connected. connecting the first central shaft and the shaft of the generator with two bevel gears with the axial directions of the shafts being non-parallel to each other;
A force is transmitted from the outside of the power generating mechanism to the second movable part through the second central shaft to rotate the second movable part by a certain amount to engage the teeth of the first movable part and the teeth of the second movable part. Rotating the first movable part by a certain amount in conjunction with
The first winding portion is twisted by a certain amount of rotation of the first movable part, and elastic energy ie12 due to the twisting is accumulated in the first winding portion,
After the first movable part rotates by a certain amount, the teeth of the first and second movable parts are disengaged, and the elastic energy ie12 rotates the first movable part in the opposite direction by a certain amount to rotate the first central axis. to transmit the rotation of the first central shaft to rotate the shaft of the generator, generate electric power with the generator, and
By rotating the first central shaft, the free end of the second winding portion is brought into contact with the housing to stop the movement of the free end, and the first central shaft is rotated by the initial elastic energy ie1 and the initial elastic energy ie2,
The gear ratio between the two spur gears or between the bevel gears that connect the first central shaft and the shaft of the generator is defined as the amount of power that is 50% or more and 100% or less of the peak power amount on the shaft of the generator. A power generation method using a power generation mechanism with a gear ratio that allows power generation. the number of teeth of the spur gear of the shaft of the generator to the number of teeth of the spur gear of the first central shaft, or the number of teeth of the bevel gear of the shaft of the generator to the number of teeth of the first central shaft 7. The power generation method by the power generation mechanism according to claim 6, wherein the gear ratio is between 1:2.467 and 1:7.5. the number of teeth of the spur gear of the shaft of the generator to the number of teeth of the spur gear of the first central shaft, or the number of teeth of the bevel gear of the shaft of the generator to the number of teeth of the first central shaft 8. The power generation method according to claim 7, wherein the gear ratio is any one of 1:3.5, 1:5.0, 1:6.0 and 1:7.5. The power generation mechanism according to any one of claims 6 to 8, wherein the gear ratio between the two spur gears or between the bevel gears is the gear ratio that can generate 100% of the peak power amount. Power generation method. the number of teeth of the spur gear of the shaft of the generator to the number of teeth of the spur gear of the first central shaft, or the number of teeth of the bevel gear of the shaft of the generator to the number of teeth of the first central shaft 10. The power generation method by the power generation mechanism according to claim 9, wherein the gear ratio is 1:7.5.

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