JP2002281727A - Vibration-operated generator and light emission device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vibration-operated generator which can convert energy more efficiently than a conventional one while it is composed of a small number of components and easy to assemble/manufacture, and to provide a light emission device having the vibration-operated generator. SOLUTION: This vibration-operated generator has a fixed permanent magnet, fixed to one end of a nonmagnetic cylindrical case on which power generating conductor coils are wound, a swinging permanent magnet, which has a polarity opposite to that of the fixed permanent magnet and is swingably placed in the case in a floating state by a magnetic repulsive force, and a driving-back member, fixed to the other end of the case opposite to the fixed permanent magnet and driving back the swinging permanent magnet which is transferred to other end by an external vibration force and the repulsive force against the fixed permanent magnet toward the one end side of the case. An electric circuit containing a light emission device is connected to the conductors of the coils of the vibration-operated generator to constitute a light emission device.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vibration generator for converting kinetic energy of a vibrating structure or equipment into electric energy for effective use.

[0002]

2. Description of the Related Art Conventionally, a vibration generator for generating an induced current by vibrating a permanent magnet in a coil has been attached to a vibrating device such as a vehicle or a driving device, and converts its kinetic energy into electric energy for use. Have been.

[0003] As such a vibration generator, a spring-type generator in which both ends of a permanent magnet are supported by springs in a case made of a non-magnetic material around which a conductive coil is disposed is generally used.

In this spring-type vibration power generator, when the case and the coil vibrate together with the vibrating body, the permanent magnet starts to move relative to the vibration by the spring, and an induced current is generated in the coil. It is something to take out and use.

[0005]

However, in the conventional spring type vibration power generator as described above, if the axes of the springs supporting the permanent magnets in a pair do not coincide with each other, energy loss occurs at the time of vibration. Accurate centering is required to obtain efficient energy conversion. Therefore, the assembling and the production are time-consuming.

Alternatively, when the guide shaft or the like is easily installed to solve the problem of the alignment of the springs, the number of parts for that purpose increases, and the apparatus becomes large. Also, in order to prevent the permanent magnet and the spring from colliding with each other, it is necessary to keep the spring ends in contact with both ends of the magnet in a stationary state. For this purpose, the magnet is moved up and down by a spring having a large spring constant. Must be supported by pressing. As a result, the amplitude of the repetitive motion of the magnet is limited, vibration is easily damped, and the energy conversion efficiency is reduced.

Furthermore, in order to improve the ease of swinging of the magnet, it is necessary to reduce the extra friction applied to the magnet and spring as much as possible to enable smooth swinging. Components of sliding parts such as rocking parts must be of high dimensional accuracy, resulting in high manufacturing costs.

SUMMARY OF THE INVENTION In view of the above problems, the main object of the present invention is to provide a vibration generator capable of performing more efficient energy conversion than before, while having a small number of parts and easy to assemble and manufacture. A light emitting device is provided.

[0009]

In order to achieve the above object, a vibration power generator according to the first aspect of the present invention comprises a non-magnetic cylindrical case having a power generation lead coil wound around an outer periphery thereof, A fixed permanent magnet fixedly arranged at one end in the case, a swinging permanent magnet arranged so as to be able to swing in a floating state by a magnet repulsion in a direction opposite to that of the fixed permanent magnet in the case, and The oscillating permanent magnet, which is fixedly arranged at the other end of the case facing the fixed permanent magnet and moves toward the other end by vibrating force acting from the outside and repulsive force against the fixed permanent magnet, is attached to the one end. And a rebound member that rebounds toward the unit side.

According to a second aspect of the present invention, in the vibration generator according to the first aspect, the rebound member is fixedly arranged in the same polarity direction as the fixed permanent magnet, and magnet repulsion is performed. It is a permanent magnet that rebounds with force.

According to a third aspect of the present invention, in the vibration power generator according to the first aspect, the rebound member is an elastic body that rebounds by an elastic force when the oscillating permanent magnet collides. It is characterized by having.

A light emitting device according to a fourth aspect of the present invention is
A light emitting device comprising the vibration generator according to claim 1, wherein an electric circuit including a light emitting element is connected to a conductive wire of the coil.

A light emitting device according to a fifth aspect of the present invention is the light emitting device according to the fourth aspect, wherein the case is provided with a portable grip.

Further, in the light emitting device according to the invention described in claim 6, in the light emitting device according to claim 4, mounting means for mounting the case inside the vibrator, and the light emitting element being exposed to the outside. Connection means for connecting to a coil conductor inside the vibrating body.

In the vibration generator according to the present invention, the relative repetitive movement of the permanent magnet with respect to the conductor coil is not dependent on the spring, but the magnet repulsive force of the permanent magnet fixed to one end in the cylindrical case made of a non-magnetic material; Since it is generated by the rebound member on the other end side in the case, the magnetic force of the fixed permanent magnet and the oscillating permanent magnet itself is effectively used, and the device configuration is very simple.

Further, the oscillating permanent magnet is in a floating state with respect to the fixed permanent magnet due to the repulsive force of the magnet and hardly comes into contact with anything other than the case. Since there is no energy loss, energy can be efficiently converted to generate power. Further, since the magnetic flux density of the outer periphery of the swinging permanent magnet is improved by the magnetic flux of the fixed permanent magnet, a higher electromotive force can be obtained.

Also, in the vibration generator of the present invention, there is a sliding area in which the oscillating permanent magnet slides against the inner surface of the case, but the only component that moves during oscillation is the oscillating magnet. It is only necessary to lubricate between the two to make it easier to do so, so there is no need to use parts with high dimensional accuracy. For this reason, the number of components is small, and the cost of the components can be reduced. As a result, the manufacturing cost of the generator itself can be reduced.

As the rebound member of the present invention, a configuration in which a permanent magnet is fixed to the other end in the case in the same polarity direction as the fixed permanent magnet is simple. In this case, the oscillating permanent magnet is suspended between the two fixed permanent magnets by receiving repulsive force from the fixed permanent magnets at both ends in the case. If the case vibrates with the vibrating body, the oscillating permanent magnet The magnet starts to oscillate while receiving a repulsive force between the two fixed permanent magnets, and continues to move relative to the conductor coil.

Further, a configuration in which an elastic body is fixed to the other end in the case as the rebound member is also simple. For example, if a highly elastic material other than metal, such as resin or rubber, is used, if the case vibrates with the vibrating body, the swinging permanent magnet will be repelled by the magnet repulsive force of the fixed permanent magnet on one end and on the other end. In the rebound by the elastic force of the collision with the elastic body,
Start swinging between the fixed permanent magnet and the elastic body in the case,
The relative repetitive movement with respect to the conductor coil is continued.

In this case, by using a material having high elasticity, the oscillating permanent magnet rebounds at a high moving speed and the amplitude is amplified. Since the electromotive force generated in the coil is proportional to the change in the magnetic flux density passing through the coil, the higher the relative moving speed of the oscillating permanent magnet with respect to the coil, the greater the electromotive force that can be obtained. By doing so, a larger voltage can be obtained.

As described above, in the vibration power generator of the present invention,
It is possible to reduce the number of parts and reduce the size without using a spring to support the swinging permanent magnet, and to efficiently convert it to electric energy with little energy loss.

Therefore, the vibration power generator of the present invention has a simple and compact power supply configuration, and is easy to assemble and manufacture.
It can be used for various devices. Therefore, as described in claim 3, by connecting an electric circuit including a light emitting element to the coil conductor, a light emitting device can be easily configured.

In such a light emitting device of the present invention,
Since the vibration generator as the main body is small and lightweight, it is particularly convenient to carry. Therefore, even if the pedestrian carries, there is no burden, and since it is generated by the vibration of walking and emitted,
It can be used for checking the operation in the dark, such as when walking or jogging at night, and for displaying safety. In addition, since a consumable battery is not required as a power source, not only the weight and cost are reduced, but also self-emission can be achieved, as compared to a reflective seal or the like, which is difficult for an opponent to see without non-lighting. Increases safety.

When the light emitting device is carried and used as described above, if the gripping portion is provided in the case of the vibration generator, the gripping portion can be grasped, and the device can be hung or tied to the body. Becomes simple. In addition, it can be used not only on the human body but also on a bicycle.

As this portable grip, the light emitting element may be attached to an external casing covering the conductive coil wound around the case of the vibration generator or an electric circuit connected to the conductive wire in an exposed state.

In addition to being carried directly by the user,
It may be configured to be mounted inside another portable article that becomes a vibrator. For example, if an elderly person wears a walking stick,
The light emitting device blinks with the vibration of the stick. in this case,
With only the light emitting element exposed to the outside, the case section may be mounted to the internal space of the cane via the mounting means, and the coil conductor of the case in the mounted state and the light emitting element may be connected via the connecting means.

In the vibration generator according to the present invention, the distance between the fixed permanent magnet and the rebound member is not excessively large depending on the condition of use, that is, the magnitude of the generated vibration. The amplitude of the oscillating permanent magnet is set to be maintained appropriately.

[0028]

DESCRIPTION OF THE PREFERRED EMBODIMENTS As a first embodiment of the present invention,
FIG. 1 is a longitudinal sectional view showing a schematic configuration of a vibration generator in which a permanent magnet is swung between permanent magnets fixedly arranged at both ends in a cylindrical case.

In the vibration power generator 10 of this embodiment, a power generation wire coil 2 is wound and fixed on the outer periphery of a cylindrical case 1 made of non-magnetic material, vinyl chloride.
In this case, an induced current is generated by reciprocally moving the oscillating permanent magnet 3 with respect to, and the current is taken out from the end of the conducting wire of the coil 2 and used.

At both ends in the case 1, permanent magnets 4 having the same polarity direction and swinging
Are fixedly arranged in the opposite polarity direction. Thus, the swinging permanent magnet 3 is fixed to the fixed permanent magnets 4 at both ends of the case.
The magnet is in a floating state between the two magnets due to the repulsive force of the magnet.

In the vibration power generator 10, the oscillating permanent magnet 3 starts to move to one end first in the case 1 by vibration energy from the outside. When the oscillating permanent magnet 3 moves and comes close to and opposes one of the fixed permanent magnets 4, it rebounds toward the other end by repulsive force. Bounced back to This movement is repeated with the continuation of the transmission of vibration energy from the outside, and the swinging permanent magnet 3 repeats swinging between the two fixed permanent magnets 4 and continues to move relative to the coil 2 so that power generation is performed. Will be done.

In the present embodiment, a cushioning member 5 made of rubber or the like is arranged on the end face of the fixed permanent magnet 4 on both sides facing the swinging permanent magnet 3, so that when excessive vibration energy is applied, The impact caused by the collision between the oscillating permanent magnet 3 and the fixed permanent magnet 4 can be reduced.

In the vibration generator 10 having the above structure, the number of vibrations of the oscillating permanent magnet 3 per one external vibration is determined by disposing springs at both ends inside the case 1 in place of the fixed permanent magnet 4. FIG. 2 is a graph showing the results of measurement using a conventional spring-type vibration generator in which the swinging permanent magnet is mechanically supported from above and below by these springs.

FIG. 2 shows the measurement of the electromotive force (voltage V) in the coil 2 over time from the start of vibration. FIG. 2A shows the vibration generator according to the present embodiment.
(B) shows a conventional type spring vibration generator.

As is apparent from the results shown in FIG. 2, in the conventional spring-type vibrating generator, the frequency of the relative repetitive movement of the oscillating permanent magnet is about twice per external vibration. In contrast, in the vibration generator 10 according to the present embodiment, the number of vibrations of the oscillating permanent magnet 3 can be maintained at 5 to 6 times, which is more than several times, so that the electromotive force can be more efficiently generated. Was obtained.

The oscillating permanent magnet 3 includes a fixed permanent magnet 4
Is also considered to be affected by the magnetic flux. Therefore, a change in the outer peripheral magnetic flux density (Gauss) of the oscillating permanent magnet 3 in accordance with a change in the distance from the fixed permanent magnet 4 is measured with reference to the spring-type vibrating generator assuming that the fixed permanent magnet 4 does not exist. The results are shown in the diagram of FIG.

In FIG. 3, the vibration power generator 10 according to the present embodiment is shown.
The change in magnetic flux density for the square spring (□) and the magnetic flux in the case of the contrast spring-type vibration generator supporting the oscillating permanent magnet without the fixed permanent magnet, ie, when the magnetic flux source is only the oscillating permanent magnet The density changes are indicated by black diamonds (◆).

As can be seen from FIG. 3, the fixed permanent magnet 4
Increased the magnetic flux density by about 10%. For this reason, it can be seen that the use of the fixed permanent magnet 4 enables a higher electromotive force to be obtained in the vibration power generator 10 of the present embodiment.

As described above, the vibration power generator 10 of the present embodiment utilizing the repulsive force with the fixed permanent magnet does not require labor and means for shaft alignment as in the conventional spring type.
With a simple configuration with a small number of parts, it is possible to reduce the size and weight, but also to achieve high conversion efficiency into electric energy.

Next, as a second embodiment of the present invention, a permanent magnet is fixed between one end of a cylindrical case and a resin elastic wall fixed at the other end. A schematic configuration of the oscillating vibration generator is shown in a longitudinal sectional view of FIG.

In the vibration power generator 20 of the present embodiment, a power generation wire coil 12 is wound and fixed on the outer periphery of a cylindrical case 11 made of non-magnetic material, vinyl chloride. By causing the swinging permanent magnet 13 to move relatively and repeatedly, an induced current is generated, and the current is taken out from the end of the conductive wire of the coil 12 and used.

At the lower end of the case 11, a permanent magnet 14 is fixedly arranged in a polarity direction opposite to that of the swinging permanent magnet 13. As a result, the swinging permanent magnet 13 is in a floating state on the fixed permanent magnet 14 at the lower end of the case due to the magnet repulsion.

On the other hand, a collision wall 15 made of synthetic rubber is fixedly disposed at the upper end of the case 11 as a rebound member. In this vibration power generator 20, when the oscillating permanent magnet 13 rebounds from the fixed permanent magnet 14 on the lower end side and moves upward in the case 11 due to external vibration energy, the oscillating permanent magnet 13 collides with the collision wall 15 before turning to free fall. Then, it is rebounded by the elastic force while maintaining a high moving speed to the lower end side. This movement is repeated with the continuation of the transmission of the vibration energy from the outside.
The rocking motion between the coil 4 and the collision wall 15 is repeated, and the coil 12 is repeatedly moved relative to the coil 12 to generate power.

The voltage (V) generated when continuous external vibration was applied to the vibration generator 20 according to the present embodiment was measured in a state where the swinging permanent magnet was used in the direction in which it was moved in the vertical direction. At this time, the result is shown in a diagram of FIG. 5 in comparison with the vibration power generator according to the first embodiment. As can be seen from FIG. 5, the voltage generated when there is a collision wall due to the elastic body is about 40% higher at the peak value than when there is no collision wall. As described above, in the vibration power generator using the collision wall made of the elastic body, it is possible to generate power more efficiently without requiring an increase in the number of parts.

Next, as a third embodiment of the present invention, a portable light emitting device provided with the vibration power generator 10 shown in the first embodiment is shown in FIG. In the present light emitting device 30, for example, a light emitting circuit 40 as shown in FIG. 7 is installed at the upper end of the case 1 of the vibration power generator 10 while being connected to the coil 2.
As a light emitting element of the light emitting circuit 40, a high luminance light emitting diode 41 driven at a low voltage is used.

The light emitting circuit 40 is configured by connecting a rectifier circuit R to a conductor of the coil 2 and connecting a capacitor C and a light emitting element L between the lines. The voltage generated in the coil 2 is rectified. The capacitor R is rectified by the circuit R and charges the capacitor C as a rectified voltage, and the light emitting element L is turned on by the charged voltage of the capacitor C.

The light emitting device 30 includes a light emitting diode 41
The entire vibration generator 10 is covered by the outer casing 30 together with the light emitting circuit 40 so that the light is exposed to the outside through the diffusion lens 33. The gripping grip 32 formed integrally with the outer casing 30 It is configured to be portable.

Accordingly, as shown in FIG. 8, the present light emitting device 30 allows the wearer to grasp the grip 32 by hand or to fix it to the waist or feet through a belt between the grip 32 and the casing 30. By generating vibrations by performing various exercises such as walking, jogging, and dancing, the vibration power generator 10 generates power, and the light emitting diodes 41 can be turned on.

Such a light emitting device 30 is lightweight and small in size without using consumables such as batteries, so that it is easy to carry, and there is no fear that the power will be cut off during use, and it is possible to take a walk or jog at night. It can be used for safety display in such cases. In addition, the light emitting device 30 that emits light in this way can always emit light compared to a device such as a reflective seal conventionally used as a safety display, which is difficult for an opponent to see with no light, so that the visibility is high and the safety is high. Increase.

Next, as a fourth embodiment of the present invention, an embodiment of a light emitting device provided with the vibration power generator 20 shown in the above second embodiment and used by being mounted on a portable article of a pedestrian will be described. An example in which the device is attached to a cane will be described.

As shown in FIG. 9, the light emitting device 50 includes a light emitting circuit 40 and an oscillating generator 20 in a mounting space 52 formed inside a cane 51. 51 is mounted and fixed in a direction coinciding with the longitudinal direction of 51. The light emitting element L is mounted in an exposed state on the outer surface of the cane 51, and the light emitting circuit 40 is mounted from the inside of the cane.
Is connected.

The mounting and fixing of the cane 51 to the internal space 52 is performed via a fixing block 53 made of a non-magnetic material to which the upper and lower ends of the case 11 of the vibration power generator 20 are fitted and fixed as mounting means. . That is, the two fixed blocks 53 having the outer peripheral shape corresponding to the upper and lower inner peripheral shapes of the inner space 52 are fitted and fixed at the corresponding positions of the inner space 52, so that the vibration power generation fitted between the two fixed blocks 53 is achieved. The machine 20 is mounted and fixed inside the stick 51.

The light emitting circuit 40 is embedded in the upper fixed block 53 or in the cane 51 body above it.
It is connected to the end of a conducting wire 54 extending from the coil 12 through the fixed block 53.

In the light emitting device 50 having the above-described configuration, when the pedestrian such as the elderly walks while pushing the stick 51, the swinging permanent magnet 13 is vibrated by the impact of the stick 51. Oscillating, the vibration generator 20 generates electric power, and the light emitting element L can blink and emit light.

In the light emitting device of the present invention, the light emitting circuit for lighting the light emitting element by being connected to the vibration generator is not limited to the configuration shown in FIG. 7, but includes a rectifier circuit and a charging circuit having other configurations. Needless to say, the light emitting circuit is simpler and easier to manufacture, from the viewpoint of reducing the size and weight of the device.

The light emitting device of the present invention is not limited to use in a portable or portable article as described in the above embodiments, but can be used in various situations as long as it generates vibration. For example, the safety display is not limited to pedestrians, but can be used by attaching it to various vehicles such as bicycles, and can also be used to attach it to various mechanical devices and check its operation.

[0057]

As described above, according to the vibration generator of the present invention, the number of parts is smaller, the weight and size can be reduced, and the assembly and production are easy, but the energy conversion is more efficient than before. There is an effect that can be performed.

The light emitting device of the present invention having such a vibration power generator can be easily constructed simply by connecting an electric circuit including a light emitting element with a light and small vibration power generator as a main body. It can be easily mounted on a vibrating body, and can be easily used in a wide range from the safety display of a wearer to the operation confirmation of mechanical devices.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a vibration generator as a first embodiment of the present invention.

FIG. 2 is a diagram (vertical axis: voltage [V], horizontal axis: time [sec]) showing the change over time of the electromotive force when a single external vibration is applied to the vibration power generator. ) Shows the vibration generator of the first embodiment, and (b) shows the conventional spring-type vibration generator as a control.

FIG. 3 shows a conventional spring-type vibration generator in which the change in magnetic flux density on the outer periphery of the oscillating permanent magnet corresponding to the relative position interval between the oscillating permanent magnet and the fixed permanent magnet in the vibration generator of the first embodiment is shown. Diagram shown as control (vertical axis: magnetic flux density [Gaus
s] and abscissa: relative position interval [mm]). In the figure, the case of the present embodiment is indicated by a white square (□), and the control is indicated by a black diamond (◆).

FIG. 4 is a schematic configuration diagram of a vibration generator as a second embodiment of the present invention.

FIG. 5 is a diagram showing a change over time in the amount of power generation when external vibration is continuously applied to the vibration generator (vertical axis: voltage [V], horizontal axis:
Time [sec]), and in the figure, the case of the present embodiment is indicated by a solid line,
Controls are indicated by dotted lines, respectively.

FIG. 6 is a schematic configuration diagram of a portable light emitting device including a vibration power generator according to the first embodiment as a third embodiment of the present invention.

FIG. 7 is a circuit diagram of a light emitting circuit used in the light emitting device of FIG.

8 (a) to 8 (c) are schematic views illustrating the usage status of the portable light emitting device of FIG. 6;

FIG. 9 is a schematic configuration diagram of a light emitting device mounted in a cane provided with a vibration power generator according to a second embodiment as a fourth embodiment of the present invention, and FIG. ,
FIG. 2B is a partially enlarged view illustrating the configuration of the light emitting device.

[Explanation of symbols]

 1, 11: Case 2.12: Conductor coil 3, 13: Swing permanent magnet 4: Fixed permanent magnet 5, 16: Buffer member 15: Collision wall 10, 20: Vibration generator 30, 50: Light emitting device 31: External Casing 32: Grip 33: Diffusion lens 40: Light emitting circuit 41: Light emitting diode R: Rectifier circuit C: Capacitor L: Light emitting element 51: Staff 52: Internal space 53: Fixed block 54: Lead wire

Claims (6)

[Claims] 1. A non-magnetic cylindrical case having a power generation wire coil wound around an outer periphery thereof, a fixed permanent magnet fixedly arranged at one end in the case, and the fixed permanent magnet in the case. A oscillating permanent magnet arranged so as to be able to oscillate in a floating state by a magnet repulsion in a reverse polarity direction, and a vibrating force which is fixedly arranged at the other end of the case opposite to the fixed permanent magnet and acts externally. A rebound member that repels the oscillating permanent magnet that has moved to the other end side by a repulsive force against the fixed permanent magnet toward the one end side,
A vibration generator comprising: 2. The vibration generator according to claim 1, wherein the rebound member is a permanent magnet that is fixedly arranged in the same polarity direction as the fixed permanent magnet and rebounds by a magnet repulsion. 3. The vibration power generator according to claim 1, wherein the rebound member is an elastic body that rebounds by an elastic force when the oscillating permanent magnet collides. 4. The light emitting device according to claim 1, wherein an electric circuit including a light emitting element is connected to the conductor of the coil. 5. The light emitting device according to claim 4, wherein a portable grip is provided on the case. 6. A mounting device for mounting the case inside the vibrating body, and connecting means for connecting the light emitting element to a coil conductor inside the vibrating body in a state of being exposed to the outside. Item 5. A light emitting device according to item 4.