WO2013124987A1 - Electricity generation device and electricity generation method - Google Patents

Description

Power generation apparatus and power generation method

The present invention relates to a power generation apparatus and a power generation method.

In recent years, in order to maintain and improve the global environment, development of devices with as little environmental impact as possible has been actively conducted. As one of such devices, there has been proposed a suspension control device that generates electric power by using energy of vertical movement of a tire portion with respect to a body portion during traveling of a vehicle (see Patent Document 1: hereinafter, “conventional example”). Call).

In this conventional suspension control device, a motor prepared for active suspension control is used, and during the power storage cycle period, power is generated according to the vertical movement of the tire portion and stored in the power storage device. . In the discharge cycle period, suspension control is performed by driving the motor with the electric power stored in the power storage device. And the electrical storage cycle and the discharge cycle are repeated.

JP 2003-054234 A

In the conventional technique described above, the power storage cycle and the discharge cycle are repeated. Then, power generation is performed only in the power storage cycle.

By the way, it can be said that the vertical movement of the tire part with respect to the body part always occurs when the vehicle travels. For this reason, in the technology of the conventional example, it cannot be said that the power generation using the energy of the vertical movement of the tire portion with respect to the body portion is efficiently performed.

For this reason, there is a need for a technology that can efficiently generate power using the energy of the vertical movement of the tire portion relative to the body portion. Meeting this requirement is one of the problems to be solved by the present invention.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a new power generation apparatus and a power generation method capable of realizing high-efficiency power generation using vibration energy of a vibration part.

According to a first aspect of the present invention, there is provided a connection member that is connected to a vibration part and reciprocates along with the vibration of the vibration part; and a rotation shaft of the first motor by movement in one direction of the connection member. A first power generation unit that generates a first rotational force for rotating the first power generation unit and generates power by rotation of a rotation shaft of the first motor caused by the first rotational force; and other than the one direction of the connection member A second power generation unit that generates a second rotational force that rotates the rotational shaft of the second motor by moving in the direction of the second motor, and generates power by the rotation of the rotational shaft of the second motor caused by the second rotational force; The movement of the connection member in the one direction releases the application of the second rotational force to the rotation shaft of the second motor, and the movement of the connection member in the other direction causes the Applying the first rotational force to the rotating shaft of the first motor There is released, it is power generation apparatus according to claim.

According to a second aspect of the present invention, there is provided a connecting member that is connected to a vibration part and reciprocates along with the vibration of the vibration part; A second power generation unit that generates power by rotating the rotation shaft of the second motor; and the first power generation unit moves in one direction of the connecting member. Generating a first rotational force for rotating the rotational shaft of the first motor, and generating electric power by rotating the rotational shaft of the first motor caused by the first rotational force; and A second rotation force that rotates the rotation shaft of the second motor by moving the connecting member in a different direction different from the one direction, and the second rotation force is caused by the second rotation force. The power generation is performed by the rotation of the rotating shaft of the motor And the generation of the second rotational force to the rotation shaft of the second motor is canceled by the movement of the connection member in the one direction, and the connection member is moved in the other direction. The power generation method is characterized in that the application of the first rotational force to the rotation shaft of the first motor is released by the movement.

It is a figure which shows the example in which the electric power generating apparatus which is one Embodiment of this invention was attached to the mountain bike. It is an external view of the apparatus of FIG. It is a figure for demonstrating the structure of the apparatus of FIG. It is a perspective view for demonstrating the structure of the apparatus of FIG. It is a figure for demonstrating the structure of the gear box member of the apparatus of FIG. It is a figure for demonstrating the structure of the 1st electric power generation part of FIG.3 and FIG.4. It is a figure for demonstrating the structure of the 2nd electric power generation part of FIG.3 and FIG.4. It is a figure for demonstrating the wiring between the 1st motor of FIG.4, 6 and the 2nd motor of FIG.4, 7, and an electrical storage part. It is a figure which shows the electric power generation output by a 1st electric power generation part and a 2nd electric power generation part when a mountain bike drive | works the level | step difference. It is a figure for demonstrating the positional relationship of the gear in a 1st electric power generation part when a rack member moves to + Z direction, and a 2nd electric power generation part. It is a figure for demonstrating the positional relationship of the gear in a 1st electric power generation part when a rack member moves to -Z direction.

Hereinafter, an embodiment of the present invention will be described with reference to FIGS. In the following description and drawings, the same or equivalent elements are denoted by the same reference numerals, and redundant description is omitted.

[Constitution]
In the present embodiment, as illustrated in FIG. 1, a power generation device 100 attached to a mountain bike MB as a moving body will be described as an example. Here, the mountain bike MB shown in FIG. 1 includes a body part BDP including pipes such as a head tube and a down tube, a front tire part TFP including a front wheel tire, a rear tire part TRP including a rear wheel tire, and the body. A suspension mechanism SSP disposed between the portion BDP and the front tire portion TFP is included. And the electric power generating apparatus 100 is attached to the body part BDP and the front tire part TFP so that it may be parallel to suspension system SSP. Here, the coordinate system (X, Y, Z) in FIG. 1 is defined as illustrated.

The suspension mechanism SSP includes an individual suspension mechanism SSP ₁ disposed on the + Y direction side of the front tire and an individual suspension mechanism SSP ₂ disposed on the −Y direction side of the front tire (FIG. 2 described later). (See (A)).

Further, in the present embodiment, the power storage unit 500 that is an external device that stores the power generation result by the power generation device 100 is attached to the down tube of the mountain bike MB. The power generation apparatus 100 and the power storage unit 500 are electrically connected via a wiring member.

FIGS. 2A and 2B are external views of the power generation apparatus 100 according to the embodiment attached to the mountain bike MB in this way. Here, FIG. 2A is an external view of the power generation device 100 attached to the mountain bike MB as viewed from the + X direction side (that is, the front of the mountain bike MB). FIG. 2B is an external view of the power generation device 100 attached to the mountain bike MB as viewed from the + Y direction side (that is, leftward in the traveling direction of the mountain bike MB).

Here, each of the individual suspension mechanisms SSP ₁ and SSP ₂ has spring portions 931 and 932 and an inner cylinder 933. The suspension mechanism SSP has a buffering function that softens the shock and vibration from the road surface to the driver during the travel of the mountain bike MB, and when the buffering function is exhibited, the suspension mechanisms SSP ₁ and SSP ₂ The respective lengths SL ₁ and SL ₂ are changed.

2A and 2B, the power generation apparatus 100 is attached to a crown 911 that is a part of the body portion BDP by an attachment member 410 and the front tire by the attachment member 420. It is attached to an arch 921 which is a part of the part TFP. For this reason, the distance DL along the Z direction from the + Z direction side end of the arch 921 to which the power generation apparatus 100 is attached to the crown 911 seems to change in conjunction with the above-described changes in the length SL ₁ and the length SL _2. It has become.

In addition, even if the electric power generating apparatus 100 exists, as will be described later, the distance DL can be changed.

The power generation device 100 includes a gear box member 110, a rack member 120 as a connection member, a first power generation unit 200, as comprehensively shown in FIGS. And a second power generation unit 300. Here, FIG. 3 is a view of the inside of the gear box member 110 as viewed from the −X direction side when the −X direction side lid portion of the gear box member 110 is removed. FIG. 4 is a perspective view of the power generation device 100 excluding the gear box member 110 as viewed from the −X direction side.

The gear box member 110 is a plastic member, for example, and is fixed to the above-described crown 911 by the mounting member 410. The gear box member 110 is formed with a groove portion DT for accommodating a part of the rack member 120 and smoothly moving the rack member 120 along the Z-axis direction along the Z-axis direction. . Further, as shown in FIGS. 5A and 5B, the gear box member 110 has a long hole-shaped bearing portion LHL1 for accommodating a gear described later in the first power generation unit 200, and a round hole-shaped bearing portion. A bearing portion HL1 and a round hole MH1 are formed along the X-axis direction. Further, the gear box member 110 has a long hole-shaped bearing portion LHL2, a round hole-shaped bearing portion HL2, and a round hole MH2 for accommodating a gear described later in the second power generation unit 300 along the X-axis direction. Is formed. 5A is a view of the gearbox member 110 viewed from the −X direction side, and FIG. 5B is a view of the gearbox member 110 viewed from the + X direction side.

Then, using these grooves, bearings, and round holes, a part of the rack member 120 and the gears in the first power generation unit 200 and the second power generation unit 300 are accommodated in the gear box member 110. Yes.

The rack member 120 is a long plate-like member made of plastic, for example. The rack member 120 has rack teeth 121 formed along the Z-axis direction on the −Y direction side, and rack teeth 122 formed along the Z-axis direction on the + Y direction side. The end of the rack member 120 on the −Z direction side is fixed to the arch 921 described above by a mounting member 420. For this reason, the rack member 120 reciprocates in the Z direction in the gear box member 110 according to the increase / decrease in the distance DL by the buffer function of the suspension mechanism SSP of the mountain bike MB.

<Configuration of first power generation unit 200>
Next, the configuration of the first power generation unit 200 will be described. 4 and 6, the first power generation unit 200 includes a shaft-equipped coaxial gear 210 (hereinafter simply referred to as “coaxial gear 210”) as a first rotating member, and a first rotational force transmission. A shaft-equipped coaxial gear 220 (hereinafter simply referred to as “coaxial gear 220”), a first motor rotating gear 230, and a first motor 240 are provided as members. Here, FIG. 6 is a diagram of the first power generation unit 200 viewed from the −X direction side.

The coaxial gear 210 is a coaxial gear in which a gear 211 and a gear 212 are coupled. The gear 211 is formed with gear teeth along a circumference centered on an axis parallel to the X axis, and the gear 212 is formed with a gear tooth along a circumference centered on an axis parallel to the X axis. Is formed. Here, the diameter of the gear 212 is larger than the diameter of the gear 211. The coaxial gear 210 has a shaft portion that extends in the + X direction with the central axis of the gear 211 and the gear 212 as the central axis. This shaft portion is inserted into a long hole-shaped bearing portion LHL1 formed in the gear box member 110 described above.

The gear teeth in the gear 211 mesh with the rack teeth 121 in the rack member 120. When the coaxial gear 210 is in contact with the coaxial gear 220 and the rotation shaft of the coaxial gear 210 cannot move in the −Z direction in the bearing portion LHL1, the coaxial gear 210 is coaxially moved in conjunction with the movement of the rack member 120 in the −Z direction. The gear 210 rotates counterclockwise (hereinafter also simply referred to as “counterclockwise”) in the YZ plan view with the + X direction as the viewing direction (see FIG. 11 described later). On the other hand, in a state where the coaxial gear 210 is not in contact with the coaxial gear 220 and the rotation shaft of the coaxial gear 210 can move in the long hole-shaped bearing portion LHL1 in the −Z direction, the rack member 120 moves in the −Z direction. In conjunction with this, the coaxial gear 210 moves in the −Z direction.

Further, when the coaxial gear 210 is in contact with the + Z direction end of the bearing portion LHL1 and the rotation shaft of the coaxial gear 210 cannot move in the + Z direction through the bearing portion LHL1, it is linked with the movement of the rack member 120 in the + Z direction. Thus, the coaxial gear 210 rotates clockwise (hereinafter also simply referred to as “clockwise”) in the YZ plan view with the + X direction as the viewing direction (see FIG. 10 described later). On the other hand, in a state where the rotation shaft of the coaxial gear 210 is not in contact with the + Z direction end portion of the bearing portion LHL1, and the rotation shaft of the coaxial gear 210 can move in the + Z direction through the long hole-shaped bearing portion LHL1, the rack member. The coaxial gear 210 moves in the + Z direction in conjunction with the movement of 120 in the + Z direction.

The coaxial gear 220 is a coaxial gear in which a gear 221 and a gear 222 are coupled. A gear tooth is formed on the gear 221 along a circumference centered on an axis parallel to the X axis, and a gear tooth is formed on the gear 222 along a circumference centered on an axis parallel to the X axis. Is formed. Here, the diameter of the gear 222 is larger than the diameter of the gear 221. Further, the coaxial gear 220 has a shaft portion that extends in the + X direction with the central axis of the gear 221 and the gear 222 as the central axis. This shaft portion is inserted into a round hole-shaped bearing portion HL1 formed in the gear box member 110 described above.

The gear 221 of the coaxial gear 220 is a gear 212 of the coaxial gear 210 when the shaft portion of the coaxial gear 210 moves in the long hole-shaped bearing portion LHL1 in the −Z direction and cannot move in the −Z direction. Mesh with. When the gear 212 of the coaxial gear 210 and the gear 221 of the coaxial gear 220 mesh with each other, the coaxial gear 220 rotates clockwise in conjunction with the counterclockwise rotation of the coaxial gear 210 (see FIG. 11 described later). .

Note that when the shaft portion of the coaxial gear 210 moves in the + Z direction in the long hole-shaped bearing portion LHL1, the gear 212 of the coaxial gear 210 does not mesh with the gear 221 of the coaxial gear 220. In this case, the coaxial gear 220 does not rotate (see FIG. 10 described later).

As described above, the long hole-shaped bearing portion LHL1 moves the coaxial gear 210 to a position where the rotational force can be transmitted to the rotation shaft of the first motor 240 via the coaxial gear 220, and via the coaxial gear 220. The first motor 240 has a function as a first clutch mechanism for moving the coaxial gear 210 to a position where the rotational force cannot be transmitted to the rotation shaft of the first motor 240.

The first motor rotating gear 230 is attached to the rotating shaft of the first motor 240. The first motor rotating gear 230 meshes with the gear 222 of the coaxial gear 220. When the coaxial gear 220 rotates, the first motor rotating gear 230 rotates in the direction opposite to the rotating direction of the coaxial gear 220 in conjunction with the rotation of the coaxial gear 220. To be granted.

Note that the first motor 240 performs a power generation operation by inertia in addition to a power generation operation by applying a rotational force to the first motor rotation gear 230.

The first motor 240 generates power according to the rotation of the rotating shaft. The rotation shaft of the first motor 240 is inserted into a round hole MH1 formed in the gear box member 110. The first motor 240 is fixed to the outside of the gear box member 110 on the + X direction side by a fixing member (not shown).

<Configuration of Second Power Generation Unit 300>
Next, the configuration of the second power generation unit 300 will be described. 4 and 7, the second power generation unit 300 includes a shaft-equipped coaxial gear 310 (hereinafter simply referred to as “coaxial gear 310”) as a second rotating member, and a second rotational force. A shaft-equipped coaxial gear 320 (hereinafter simply referred to as “coaxial gear 320”) as a transmission member, a second motor rotating gear 330, and a second motor 340 are provided. Here, FIG. 7 is a diagram of the second power generation unit 300 viewed from the −X direction side.

The coaxial gear 310 is a coaxial gear in which a gear 311 and a gear 312 are coupled. A gear tooth is formed on the gear 311 along a circumference centered on an axis parallel to the X axis, and a gear tooth is formed on the gear 312 along a circumference centered on an axis parallel to the X axis. Is formed. Here, the diameter of the gear 312 is larger than the diameter of the gear 311. The coaxial gear 310 has a shaft portion that extends in the + X direction with the central axis of the gear 311 and the gear 312 as the central axis. This shaft portion is inserted into a long hole-shaped bearing portion LHL2 formed in the gear box member 110 described above.

The gear teeth in the gear 311 mesh with the rack teeth 122 in the rack member 120. When the coaxial gear 310 is in contact with the coaxial gear 320 and the rotation shaft of the coaxial gear 310 cannot move in the + Z direction in the bearing portion LHL2, the coaxial gear 310 is interlocked with the movement of the rack member 120 in the + Z direction. Rotate counterclockwise (see FIG. 10 described later). On the other hand, in a state where the coaxial gear 310 is not in contact with the coaxial gear 320 and the rotation shaft of the coaxial gear 310 can move in the + Z direction through the elongated hole-shaped bearing portion LHL2, it is linked to the movement of the rack member 120 in the + Z direction. Then, the coaxial gear 310 moves in the + Z direction.

Further, when the coaxial gear 310 is in contact with the end portion of the bearing portion LHL2 in the −Z direction and the rotation shaft of the coaxial gear 310 cannot move in the bearing portion LHL2 in the −Z direction, the rack member 120 moves in the −Z direction. In conjunction with this, the coaxial gear 310 rotates clockwise (see FIG. 11 described later). On the other hand, in a state where the rotation shaft of the coaxial gear 310 is not in contact with the end in the −Z direction of the bearing portion LHL2, and the rotation shaft of the coaxial gear 310 can move in the −Z direction through the elongated hole-shaped bearing portion LHL2. In conjunction with the movement of the rack member 120 in the −Z direction, the coaxial gear 310 moves in the −Z direction.

The coaxial gear 320 is a coaxial gear in which a gear 321 and a gear 322 are coupled. The gear 321 is formed with gear teeth along a circumference centered on an axis parallel to the X axis, and the gear 322 is formed with a gear tooth along a circumference centered on an axis parallel to the X axis. Is formed. Here, the diameter of the gear 322 is larger than the diameter of the gear 321. Further, the coaxial gear 320 has a shaft portion that extends in the + X direction with the central axis of the gear 321 and the gear 322 as the central axis. This shaft portion is inserted into a round hole-shaped bearing portion HL2 formed in the gear box member 110 described above.

The gear 321 of the coaxial gear 320 meshes with the gear 312 of the coaxial gear 310 when the shaft portion of the coaxial gear 310 moves in the + Z direction through the long hole-shaped bearing portion LHL2 and cannot move in the + Z direction. To do. When the gear 312 of the coaxial gear 310 and the gear 321 of the coaxial gear 320 mesh with each other, the coaxial gear 320 rotates clockwise in conjunction with the counterclockwise rotation of the coaxial gear 310 (see FIG. 10 described later). .

In addition, when the shaft portion of the coaxial gear 310 moves in the −Z direction through the long hole-shaped bearing portion LHL1, the gear 312 of the coaxial gear 310 does not mesh with the gear 321 of the coaxial gear 320. In this case, the coaxial gear 320 is not rotated (see FIG. 11 described later).

In this way, the long hole-shaped bearing portion LHL2 moves the coaxial gear 310 to a position where the rotational force can be transmitted to the rotation shaft of the second motor 340 via the coaxial gear 320, and via the coaxial gear 320. The second motor 340 has a function as a second clutch mechanism for moving the coaxial gear 310 to a position where the rotational force cannot be transmitted to the rotation shaft of the second motor 340.

The second motor rotating gear 330 is attached to the rotating shaft of the second motor 340. The second motor rotating gear 330 meshes with the gear 322 of the coaxial gear 320. When the coaxial gear 320 rotates, the second motor rotating gear 330 rotates in the direction opposite to the rotating direction of the coaxial gear 320 in conjunction with the rotation of the coaxial gear 320 so that the rotating shaft of the second motor 340 is rotated. To be granted.

Note that, similarly to the first motor 240, the second motor 340 performs a power generation operation by inertia in addition to a power generation operation by applying a rotational force to the second motor rotation gear 330.

The second motor 340 generates power according to the rotation of the rotating shaft. The rotation shaft of the second motor 340 is inserted into a round hole MH2 formed in the gear box member 110. The second motor 340 is fixed to the outside of the gear box member 110 on the + X direction side by a fixing member (not shown).

As shown in FIG. 8, the first motor 240 is provided with output terminals 241 and 242. In the present embodiment, the output terminals 241 and 242 are connected to the power storage unit 500 that is an external device. Yes. The energy generated by the first motor 240 is supplied from the output terminals 241 and 242 to the power storage unit 500 via the wiring member.

The second motor 340 is provided with output terminals 341 and 342, and the output terminals 341 and 342 are connected to the power storage unit 500 that is an external device. The energy generated by the second motor 340 is supplied from the output terminals 341 and 342 to the power storage unit 500 via the wiring member.

In this embodiment, the power storage unit 500 includes a smoothing circuit that smoothes the voltage, a stabilization circuit that stabilizes the voltage supplied from the smoothing circuit, and the like.

[Operation]
The operation of the power generation device 100 configured as described above will be described mainly focusing on the power generation operation during the operation of the mountain bike MB by the first power generation unit 200 and the second power generation unit 300.

In the following description, the power generation operation by the power generation apparatus 100 will be described with reference to FIG. 9 exemplifying the case where the front wheel tire of the mountain bike MB to which the power generation apparatus 100 is attached gets over the step. Here, the distance DL shown in FIG. 9 is a distance between the crown 911 and the arch 921 when the driver is not on the mountain bike MB (see FIGS. 2A and 2B).

Before the mountain bike starts to step on the step (period (a) in FIG. 9), the buffering operation by the suspension mechanism SSP is not performed for a long period of time, and the power generation apparatus 100 using the buffering operation by the suspension mechanism SSP is performed. It is assumed that power generation by is not performed. Further, in the period (a) of FIG. 9, when the driver gets on the mountain bike MB, the distance DL between the crown 911 and the arch 921 is assumed to be the distance DL ₀ (hereinafter, referred to as “the distance DL _0”) . This state is also called “equilibrium state”).

<Power generation by stepping>
First, when the front wheel tire of a mountain bike begins to ride on a step (period (b) in FIG. 9 starts), the distance between the crown 911 and the arch 921 to which the power generation device 100 is attached by the buffer function by the suspension mechanism SSP. DL begins to shrink. As a result, as shown in FIG. 10, the rack member 120 starts moving in the + Z direction with respect to the gear box member 110.

When the rack member 120 moves in the + Z direction in this way, the coaxial gear 210 is biased in the + Z direction, and the coaxial gear 210 is moved until the shaft portion of the coaxial gear 210 reaches the + Z direction end portion of the long hole-shaped bearing portion LHL1. Move to the + Z direction side. As a result, the contact between the gear teeth of the gear 212 in the coaxial gear 210 and the gear teeth of the gear 221 in the coaxial gear 220 is released, and no rotational force can be applied to the coaxial gear 220 even if the coaxial gear 210 rotates. It becomes a state. For this reason, a rotational force is not applied to the rotation shaft of the first motor 240.

On the other hand, when the rack member 120 moves in the + Z direction, the coaxial gear 310 is biased in the + Z direction, and the coaxial gear 310 moves in the + Z direction until the gear 312 of the coaxial gear 310 contacts the gear 321 of the coaxial gear 320. To do. Thereafter, the gear teeth of the gear 312 mesh with the gear teeth of the gear 321.

After the gear teeth of the gear 312 and the gear teeth of the gear 321 mesh with each other, when the rack member 120 further moves in the + Z direction, the coaxial gear 310 rotates as shown in FIG. The coaxial gear 320 rotates in conjunction with the rotation. As a result, a rotational force is applied to the rotation shaft of the second motor 340 and power generation by the second power generation unit 300 is performed. Here, in the period (b) of FIG. 9, the power generation output by the second power generation unit 300 becomes the maximum at the time when the contraction speed of the suspension mechanism SSP is the maximum (time T ₁ in FIG. 9).

When the buffering operation of the contraction stroke by the suspension mechanism SSP accompanying the climbing step of the mountain bike is completed, the distance DL between the crown 911 and the arch 921 attached to the power generation apparatus 100 starts to increase (period (c) in FIG. 9). The suspension mechanism SSP tries to return to an equilibrium state. As a result, the gear teeth of the gear 312 urged in the −Z direction by the spring and the like are disengaged from the gear 321, and the application of the rotational force to the rotation shaft of the second motor 340 stops, but the second motor 340 The rotation by inertia is continued, and the power generation by the second power generation unit 300 is continued.

When the distance DL between the crown 911 to which the power generation device 100 is attached and the arch 921 is extended in the period (c) in FIG. 9, the rack member 120 is moved relative to the gear box member 110 as shown in FIG. 11. -Move to the Z direction.

When the rack member 120 moves to the −Z direction side with respect to the gear box member 110, the coaxial gear 210 is biased in the −Z direction, and the gear 212 of the coaxial gear 210 comes into contact with the gear 221 of the coaxial gear 220. The coaxial gear 210 moves to the −Z direction side. Thereafter, the gear teeth of the gear 212 and the gear teeth of the gear 221 mesh.

After the gear teeth of the gear 212 and the gear teeth of the gear 221 are thus engaged, when the rack member 120 further moves in the −Z direction, the coaxial gear 210 rotates, as shown in FIG. The coaxial gear 220 rotates in conjunction with the rotation. As a result, a rotational force is applied to the rotation shaft of the first motor 240, and power generation by the first power generation unit 200 is performed. Here, in the period (c) of FIG. 9, the power generation output by the first power generation unit 200 becomes the maximum at the time when the extension speed of the suspension mechanism SSP becomes the maximum (time T ₂ in FIG. 9).

Thereafter, the suspension mechanism SSP returns to the equilibrium state (period (d) in FIG. 9). As a result, the gear teeth of the gear 212 and the gear 221 are disengaged, and the application of the rotational force to the rotation shaft of the first motor 240 stops, but the first motor 240 continues to rotate due to inertia, and the first power generation unit Power generation by 200 is continued for a while.

<Power generation by step-down>
Next, when the front wheel tire of the mountain bike begins to descend the level difference (period (e) in FIG. 9 starts), the cushioning function by the suspension mechanism SSP causes a gap between the crown 911 and the arch 921 to which the power generation device 100 is attached. The distance DL begins to grow. As a result, as shown in FIG. 11, the rack member 120 starts to move in the −Z direction with respect to the gear box member 110.

When the rack member 120 moves in the −Z direction with respect to the gear box member 110, the coaxial gear 210 is biased in the −Z direction as described above, and the gear 212 of the coaxial gear 210 is changed to the gear 221 of the coaxial gear 220. The coaxial gear 210 moves in the −Z direction until it comes into contact with, and then the gear teeth of the gear 212 and the gear teeth of the gear 221 mesh (see FIG. 11).

After the gear teeth of the gear 212 and the gear teeth of the gear 221 are thus meshed, when the rack member 120 further moves in the −Z direction, the coaxial gear 210 rotates as described above, and interlocks with the rotation of the coaxial gear 210. Then, the coaxial gear 220 rotates. As a result, a rotational force is applied to the rotation shaft of the first motor 240, and power generation by the first power generation unit 200 is performed (see FIG. 11). Here, in the period (e) of FIG. 9, the power generation output by the first power generation unit 200 is maximized at a time (time T ₃ in FIG. 9) at which the extension speed of the suspension mechanism SSP is maximized.

After this, when the front wheel tire of the mountain bike lands on the ground (period (f) in FIG. 9 starts), the cushioning function by the suspension mechanism SSP causes the space between the crown 911 and the arch 921 to which the power generator 100 is attached. The distance DL begins to shrink. As a result, as shown in FIG. 10, the rack member 120 starts moving in the + Z direction with respect to the gear box member 110.

Thus, when the rack member 120 moves in the + Z direction with respect to the gear box member 110, the gear teeth of the gear 212 and the gear 221 are disengaged, and the application of the rotational force to the rotation shaft of the first motor 240 stops. In the 1st motor 240, the rotation by inertia is continued and the electric power generation by the 1st electric power generation part 200 is continued.

Further, when the rack member 120 moves in the + Z direction with respect to the gear box member 110 in this way, the coaxial gear 310 is biased in the + Z direction as described above, and the gear 312 of the coaxial gear 310 is shifted to the gear 321 of the coaxial gear 320. The coaxial gear 310 moves to the + Z direction side until it comes into contact with the gear, and thereafter, the gear teeth of the gear 312 and the gear teeth of the gear 321 mesh (see FIG. 10).

After the gear teeth of the gear 312 and the gear teeth of the gear 321 mesh with each other, when the rack member 120 further moves in the + Z direction, the coaxial gear 310 rotates as described above, and is interlocked with the rotation of the coaxial gear 310. Thus, the coaxial gear 320 rotates. As a result, a rotational force is applied to the rotation shaft of the second motor 340, and power generation by the second power generation unit 300 is performed (see FIG. 10). Here, in the period (f) of FIG. 9, the power generation output by the second power generation unit 300 becomes the maximum at the time when the contraction speed of the suspension mechanism SSP is the maximum (time T ₄ in FIG. 9).

Thereafter, the suspension mechanism SSP returns to the equilibrium state (period (g) in FIG. 9). As a result, the gear teeth of the gear 312 and the gear 321 are disengaged and the application of the rotational force to the rotation shaft of the second motor 340 stops, but the second motor 340 continues to rotate due to inertia, and the second power generation unit Power generation by 300 is continued for a while.

As described above, in this embodiment, when the rack member 120 moves in the + Z direction with respect to the gear box member 110 by the buffering function of the suspension mechanism of the mountain bike, the shaft portion of the coaxial gear 210 has an elongated hole shape. While moving in the bearing portion LHL1 in the + Z direction side, the shaft portion of the coaxial gear 310 moves in the elongated hole-shaped bearing portion LHL2 in the + Z direction side. When the shaft portion of the coaxial gear 310 moves in the long hole-shaped bearing portion LHL2 to the + Z direction side in this way, the gear 312 of the coaxial gear 310 and the gear 321 of the coaxial gear 320 mesh with each other. As a result, the rotation shaft of the second motor 340 that rotates in conjunction with the rotation of the coaxial gear 320 rotates, and power generation by the second power generation unit 300 is performed. Thereafter, even if the gear 312 of the coaxial gear 310 and the gear 321 of the coaxial gear 320 are disengaged, the rotation shaft of the second power generation unit 300 continues to rotate due to inertia and power generation by the second power generation unit 300 is continued. The

Further, when the rack member 120 moves in the −Z direction with respect to the gear box member 110 due to the shock absorbing function of the suspension mechanism of the mountain bike, the shaft portion of the coaxial gear 210 moves within the long hole-shaped bearing portion LHL1 in the −Z direction. The shaft portion of the coaxial gear 310 moves to the −Z direction side in the elongated hole-shaped bearing portion LHL2. When the shaft portion of the coaxial gear 210 moves in the elongated hole-shaped bearing portion LHL1 in the −Z direction in this way, the gear 212 of the coaxial gear 210 and the gear 221 of the coaxial gear 220 are engaged with each other. As a result, the rotating shaft of the first motor 240 that rotates in conjunction with the rotation of the coaxial gear 220 rotates, and power generation by the first power generation unit 200 is performed. Thereafter, even if the gear 212 of the coaxial gear 210 and the gear 221 of the coaxial gear 220 are disengaged, the rotation shaft of the first power generation unit 200 continues to rotate due to inertia, and power generation by the first power generation unit 200 is continued. The

Therefore, according to the present embodiment, high-efficiency power generation can be realized using the vibration energy of the vibration part.

[Modification of Example]
The present invention is not limited to the above-described embodiment, and various modifications are possible.

For example, in the above embodiment, rack teeth are formed on the rack member, and gear teeth are formed on the coaxial gear. On the other hand, instead of these tooth traces, for example, a rubber member capable of converting the reciprocating movement of the rack member into a rotational motion and a rubber member capable of transmitting the rotational force may be employed.

In the above embodiment, the power generation result is stored in the power storage unit. However, it is needless to say that the power generation result may be used for other purposes such as LED lighting and mobile phone charging.

In the above embodiment, the vibration energy by the suspension mechanism of the mountain bike is used, but it is needless to say that the vibration energy by the suspension mechanism of a moving body such as an automobile or motorcycle may be used.

Further, not only the moving body, but also, for example, the energy of vibration by the compressor of the refrigerator may be used.

Claims (5)

A connection member connected to the vibration part and reciprocally moved along with the vibration of the vibration part;
A first rotating force that rotates the rotating shaft of the first motor is generated by movement of the connecting member in one direction, and power is generated by rotation of the rotating shaft of the first motor caused by the first rotating force. 1 power generation unit;
A second rotational force for rotating the rotational shaft of the second motor is generated by movement of the connecting member in a different direction different from the one direction, and the rotational shaft of the second motor caused by the second rotational force is generated. A second power generation unit for generating power by rotating
By the movement of the connecting member in the one direction, the application of the second rotational force to the rotation shaft of the second motor is released,
The movement of the connecting member in the other direction releases the application of the first rotational force to the rotation shaft of the first motor.
A power generator characterized by that. When the movement of the connecting member changes from the one direction to the other direction, the rotation shaft of the first motor continues to rotate by inertia after the release of the application of the first torque,
When the movement of the connecting member changes from the other direction to the one direction, the rotation shaft of the second motor continues to rotate by inertia after the release of the second rotational force is applied.
The power generator according to claim 1. In addition to the first motor, the first power generation unit includes:
A first rotating member that converts a moving motion of the connecting member in the one direction into a first rotating motion;
A first rotational force transmitting portion for transmitting a rotational force of the first rotational movement of the first rotational member to a rotational shaft of the first motor;
As the connecting member moves in the one direction, the first rotating member is moved to a position where the rotating force can be transmitted to the rotating shaft of the first motor via the first rotating force transmitting portion. Along with the movement of the connecting member in the other direction, the first rotating member is moved to a position where the rotating force cannot be transmitted to the rotating shaft of the first motor via the first rotating force transmitting portion. A first clutch mechanism to be moved;
In addition to the second motor, the second power generation unit
A second rotating member that converts the movement of the connecting member in the other direction into a second rotating movement;
A second rotational force transmitting portion that transmits the rotational force of the second rotational movement of the second rotational member to the rotational shaft of the second motor;
As the connecting member moves in the one direction, the second rotating member is moved to a position where the rotating force cannot be transmitted to the rotating shaft of the second motor via the second rotating force transmitting portion. Along with the movement of the connecting member in the other direction, the second rotating member is moved to a position where the rotating force can be transmitted to the rotating shaft of the second motor via the second rotating force transmitting portion. A second clutch mechanism to be moved;
The power generation device according to claim 1, wherein: The connecting member includes a body part, a tire part including a tire disposed rotatably, and a body having a suspension mechanism disposed between the body part and the tire part. Connected to each of the tire parts,
The first power generation unit and the second power generation unit are attached to the body unit of the movable body,
The power generator according to any one of claims 1 to 3, wherein A connecting member that is connected to the vibration part and reciprocates along with the vibration of the vibration part; a first power generation unit that generates power by rotation of the rotation shaft of the first motor; and power generation by rotation of the rotation shaft of the second motor A power generation method used in a power generation device comprising:
The first power generation unit generates a first rotational force that rotates the rotation shaft of the first motor by moving the connecting member in one direction, and the first motor rotates due to the first rotational force. A first power generation step of generating power by rotating a shaft;
The second power generation unit generates a second rotational force that rotates the rotation shaft of the second motor by moving the connecting member in a direction different from the one direction, and is caused by the second rotational force. And a second power generation step of generating power by rotation of the rotation shaft of the second motor.
By the movement of the connecting member in the one direction, the application of the second rotational force to the rotation shaft of the second motor is released,
The movement of the connecting member in the other direction releases the application of the first rotational force to the rotation shaft of the first motor.
A power generation method characterized by the above.

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