JP3916104B2 - Power generation device for portable equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a power generator that is used in portable devices such as wristwatches, pocket watches, mobile phones, small radios, flashlights, etc., and automatically generates power when the portable devices are carried.
[0002]
[Prior art]
Conventionally, for example, some wristwatches are provided with a power generator as shown in FIGS.
[0003]
8 and 9 includes an unbalanced vehicle 1. The unbalanced wheel 1 includes an eccentric weight 2 that rotates about a support shaft (not shown) and a gear 3 that is attached to the eccentric weight 2 and rotates integrally with the eccentric weight 2 about the support shaft. .
[0004]
The gear 3 meshes with the rotor wheel 5 via the speed increasing gear 4. The rotor wheel 5 is accommodated in the round hole 6 a of the stator 6. Both ends of the stator 6 are connected to both ends of the iron core 7a of the coil 7, and the stator 6 and the coil 7 constitute a magnetic circuit.
[0005]
During carrying, the unbalanced vehicle 1 rotates due to hand movement and gravity, and the rotation is transmitted to the rotor wheel 5 via the speed increasing gear 4, and the rotor wheel 5 is rotated at high speed to generate power in the coil 7.
[0006]
On the other hand, in the power generator shown in FIG. 10, two speed-up gears 4 are provided and a pressure accumulating spring 8 is provided there, a force is once accumulated in the pressure accumulating spring 8 and released at a stroke, and the rotor wheel 5 is driven at high speed. The small generator 9 rotates and generates power.
[0007]
That is, in the conventional power generator as shown in FIGS. 8 to 10, the power generation amount greatly depends on the amount of magnetic flux linkage of the coil and the number of magnetic poles. The rotor vehicle 5 was rotated at a high speed to increase the power generation amount.
[0008]
[Problems to be solved by the invention]
Therefore, since the conventional power generator has the above-described configuration,
1) Since the speed increasing gear 4 and the rotor wheel 5 are required and a large load is applied to the speed increasing gear 4, the speed increasing gear 4 must be supported by a bearing or a special bearing. Since No. 5 rotates at a high speed, it had to be supported by a special bearing having an oiling structure or the like. For this reason, the number of parts increases, the structure becomes complicated, and there is a problem that it takes time to assemble and increases the cost.
[0009]
2) When the unbalanced vehicle 1 suddenly rotates in response to an impact, there is a problem that the speed increasing gear 4 may be damaged due to a large force.
[0010]
3) Since the rotation is transmitted from the unbalance wheel 1 to the rotor wheel 5 through the meshing of the gears, there is a problem that a transmission loss occurs and the transmission efficiency is lowered.
[0011]
SUMMARY OF THE INVENTION An object of the present invention is to provide an efficient power generator for a portable device that is inexpensive and does not break.
[0012]
[Means for Solving the Problems]
Therefore, the invention described in claim 1 is a power generation device for a portable device, for example, as in the embodiment described with reference to FIGS.
An eccentric weight 11 that freely rotates about the support shaft 10b;
A magnet 14 having a ring shape and NS alternating magnetic poles in the circumferential direction, attached to the eccentric weight 11 and rotated integrally with the eccentric weight 11 around the support shaft 10b;
A first stator 16 having a projection 16a provided on the same plane as the rotation plane of the magnet 14 and facing one magnetic pole of the NS of the magnet 14 ,
A second stator 17 having a projection 17a provided on the same plane as the rotation plane of the magnet 14 and facing the other magnetic pole of NS of the magnet 14 ,
A coil 18 for magnetically connecting the first stator 16 and the second stator 17;
It is characterized by comprising.
[0013]
When carrying a portable device such as a wristwatch, a pocket watch, a mobile phone, a small radio, a flashlight, etc., for example, the eccentric weight 11 rotates around the support shaft 10b due to hand movement or gravity, and the magnet together with the eccentric weight 11 is magnetized. 14 also rotates integrally around the support shaft 10 b to excite NS alternating magnetism in the first stator 16, and NS alternating magnetism having a polarity opposite to that of the first stator 16 is applied to the second stator 17. Energized to generate a change in the magnetic field in the coil 18 and generate power in the coil 18.
[0014]
The invention according to claim 2 is a power generation device for a portable device, for example, as in the embodiment described with reference to FIGS.
An eccentric weight 11 that freely rotates about the support shaft 10b;
A magnet 14A magnetized with NS in the thickness direction, which is attached to the eccentric weight 11 and rotates together with the eccentric weight 11 around the support shaft 10b;
A first yoke 22 having a comb tooth portion 22a which is affected by one of the NS magnetic poles of the magnet 14A, and which is attached to the eccentric weight 11 and rotates integrally with the eccentric weight 11 around the support shaft 10b; ,
The first yoke 22 has a comb tooth portion 23a that meshes with the comb tooth portion 22a and is influenced by the other magnetic pole of the NS of the magnet 14A, and is attached to the eccentric weight 11 together with the eccentric weight 11 and the support shaft. A second yoke 23 that rotates integrally around 10b;
A first stator 16 having a protrusion 16a provided on the same plane as the rotation plane of the magnet 14A and facing one of the comb teeth 22a of the first yoke 22 and the comb teeth 23a of the second yoke 23. When,
A second stator 17 having a projection 17a provided on the same plane as the rotation plane of the magnet 14A and facing the other of the comb teeth 22a of the first yoke 22 and the comb teeth 23a of the second yoke 23. When,
A coil 18 for magnetically connecting the first stator 16 and the second stator 17;
It is characterized by comprising.
[0015]
When carrying a portable device such as a wristwatch, a pocket watch, a mobile phone, a small radio, a flashlight, etc., for example, the eccentric weight 11 rotates around the support shaft 10b due to hand movement or gravity, and the magnet together with the eccentric weight 11 is magnetized. 14A also rotates integrally around the support shaft 10b, excites NS alternating magnetism on the first stator 16 via the comb teeth 22a of the first yoke 22, and comb teeth of the second yoke 23. The NS alternating magnetism having a polarity opposite to that of the first stator 16 is excited to the second stator 17 through the power supply 23a, and a magnetic field is changed in the coil 18 to generate power in the coil 18.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
In FIG. 1, the top view of the electric power generating apparatus by the invention of Claim 1 is shown. In FIG. 2, the center longitudinal cross-sectional view is shown.
[0017]
Reference numeral 10 in the figure denotes a base plate that is attached by screwing in a portable device as appropriate. The base plate 10 is formed by standing a cylindrical support shaft 10b at the center of the disc 10a.
[0018]
A bearing member 12 that is fixed to the eccentric weight 11 is fitted to the tip of the support shaft 10b, is placed on the stepped portion 10c, and is fixed with an attachment screw 13. Therefore, the eccentric weight 11 is attached to the support shaft 10b via the bearing member 12, and is freely rotatable around the support shaft 10b.
[0019]
The eccentric weight 11 has a sector shape, and is formed by fixing a ring-shaped magnet 14 on the inner side and a ring-shaped back yoke 15 on the outer side so as to cover the outer periphery of the magnet 14 on the outer side.
[0020]
As shown in FIG. 3, the magnet 14 has NS alternating magnetic poles in the circumferential direction. And it rotates integrally with the eccentric weight 11 around the support shaft 10b.
[0021]
On the other hand, on the disk 10a of the base plate 10, a pair of first stator 16 and second stator 17 that are arcuate with the support shaft 10 as a center are screwed. The first stator 16 is provided with protrusions 16a facing the one magnetic pole of the NS of the magnet 14 every other pole. In addition, the second stator 17 is provided with protrusions 17a facing the other NS magnetic pole of the magnet 14 every other pole.
[0022]
For example, as shown in part NS in FIG. 3, when the protrusion 16 a of the first stator 16 faces the north pole of the magnet 14, the protrusion 17 a of the second stator 17 is the south pole of the magnet 14. Opposite. From this state, when the eccentric weight 11 rotates and the protrusion 16 a of the first stator 16 faces the south pole of the magnet 14, the protrusion 17 a of the second stator 17 faces the north pole of the magnet 14. Further, when the eccentric weight 11 rotates, the protrusion 16a of the first stator 16 again faces the north pole of the magnet 14 and the protrusion 17a of the second stator 17 again faces the south pole of the magnet 14. This is repeated as the eccentric weight 11 rotates.
[0023]
One end side of the iron core 19 of the coil 18 is overlapped with the first stator 16 and the other end side is overlapped with the second stator 17, and both are screwed to the disk 10 a of the base plate 10 with a fixing screw 20. The first stator 16 and the second stator 17 are magnetically coupled by a coil 18.
[0024]
When carrying a portable device such as a wristwatch, a pocket watch, a mobile phone, a small radio, a flashlight, etc., equipped with the power generation device as described above, for example, the eccentric weight 11 rotates around the support shaft 10b due to movement of the hand or gravity. The magnet 14 and the eccentric weight 11 also rotate integrally around the support shaft 10b to excite NS alternating magnetism in the first stator 16, and NS alternating with the first stator 16 having the opposite polarity. Magnetism is excited in the second stator 17, and a magnetic field is changed in the coil 18 to generate power in the coil 18.
[0025]
FIG. 4 shows a plan view of the power generator according to the second aspect of the present invention. FIG. 5 shows a central longitudinal sectional view thereof. 4 and 5, the same reference numerals are used for portions corresponding to those of the power generation apparatus shown in FIGS. 1 to 3, and redundant description is omitted.
[0026]
4 and 5, the magnet 14A is formed in a ring shape, and NS is magnetized in the thickness direction (vertical direction in FIG. 5). The first yoke 22 is fixed to the upper side of the magnet 14A in the thickness direction, and the second yoke 23 is fixed to the lower side.
[0027]
Similarly, the first yoke 22 has a ring shape, a portion corresponding to the south pole of the magnet 14A is extended inward, and the tip is bent downward to form a comb tooth portion 22a. Similarly, the second yoke 23 has a ring shape, the portion corresponding to the north pole of the magnet 14A is extended inward, and the tip is bent upward to form a comb tooth portion 23a, as shown in FIG. Are interdigitated with the comb teeth 22a of the first yoke 22 alternately.
[0028]
Then, they are attached to the lower part of the outer periphery of the eccentric weight 11, and rotate together with the eccentric weight 11 around the support shaft 10b.
[0029]
In the power generation device shown in FIGS. 4 and 5, the protrusion 16 a of the first stator 16 faces either one of the comb teeth 22 a of the first yoke 22 and the comb teeth 23 a of the second yoke 23. To do. At this time, the protrusion 17 a of the second stator 17 faces either one of the comb tooth portion 22 a of the first yoke 22 and the comb tooth portion 23 a of the second yoke 23.
[0030]
For example, as shown in FIG. 7, when the protrusion 16a of the first stator 16 faces the north pole of the comb tooth portion 23a of the second yoke 23, the protrusion 17a of the second stator 17 It faces the south pole of the comb tooth portion 22a of the yoke 22.
[0031]
From this state, when the eccentric weight 11 rotates and the protrusion 16a of the first stator 16 faces the south pole of the comb tooth portion 22a of the first yoke 22, the protrusion 17a of the second stator 17 is It faces the N pole of the comb tooth portion 23a of the two yokes 23.
[0032]
Further, when the eccentric weight 11 rotates, the protrusion 16a of the first stator 16 again becomes the north pole of the comb tooth portion 23a of the second yoke 23, and the protrusion 17a of the second stator 17 becomes the first yoke 22 again. Opposite the S pole of the comb teeth 22a. This is repeated as the eccentric weight 11 rotates.
[0033]
When carrying a portable device such as a wristwatch, a pocket watch, a mobile phone, a small radio, a flashlight, etc., equipped with the power generation device as described above, for example, the eccentric weight 11 rotates around the support shaft 10b due to movement of the hand or gravity. The magnet 14A, together with the eccentric weight 11, also rotates integrally around the support shaft 10b, excites NS alternating magnetism on the first stator 16 via the comb teeth 22a of the first yoke 22, and The NS alternate magnetism having the opposite polarity to that of the first stator 16 is excited to the second stator 17 via the comb teeth 23a of the second yoke 23, and a change in the magnetic field is generated in the coil 18 to cause the coil 18 to change. To generate electricity.
[0034]
【The invention's effect】
Therefore, according to the first aspect of the present invention, by providing a magnet that rotates integrally with the eccentric weight and increasing the number of poles of the magnet, the frequency at which the magnet and the stator are linked is increased to increase the amount of power generation. In addition to eliminating the need for conventional speed-up gears and rotor wheels, it also eliminates the need for bearings and special bearings to support them, thus reducing the number of parts, simplifying the configuration, and making assembly easier and less costly. You can go down.
[0035]
Further, since there is no rotation transmission portion by the gear, even if the eccentric weight rotates suddenly upon receiving an impact, there is no possibility of damaging the gear, and there is no transmission loss and the transmission efficiency is not lowered.
[0036]
According to the second aspect of the present invention, it is possible to increase the interlinkage magnetic flux of the coil and increase the number of magnetic poles easily by increasing the magnet cross-sectional area. it can.
[0037]
Further, since the magnet has two poles, it is easy to create and magnetize the magnet, and there is an advantage that it is not necessary to increase the magnetic force of the magnet even if the number of poles is increased.
[Brief description of the drawings]
FIG. 1 is a plan view of a power generator according to a first aspect of the present invention.
FIG. 2 is a central longitudinal sectional view thereof.
FIG. 3 is a plan view showing the positional relationship between the magnet and the stator.
4 is a plan view of a power generator according to the second aspect of the present invention. FIG.
FIG. 5 is a central longitudinal sectional view thereof.
6A is a development view showing the meshed state of the first yoke and the second yoke, FIG. 6B is a longitudinal sectional view along the aa line, and FIG. 6C is a bb line. It is a longitudinal cross-sectional view which follows.
FIG. 7 is a plan view showing the positional relationship between the yoke and the stator.
FIG. 8 is a perspective view of a conventional power generator.
FIG. 9 is a plan view thereof.
FIG. 10 is a perspective view of another conventional power generator.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Base plate 10b Support shaft 11 Eccentric weight 14 * 14A Magnet 16 1st stator 16a Projection part 17 2nd stator 17a Projection part 18 Coil 22 1st yoke 22a Comb tooth part 23 2nd yoke 23a Comb tooth part

Claims (2)

An eccentric weight that freely rotates around the support shaft;
A ring-shaped magnet having NS alternating magnetic poles in the circumferential direction, attached to the eccentric weight, and integrally rotated around the support shaft together with the eccentric weight;
A first stator having a protrusion provided on the same plane as the rotation plane of the magnet and facing one of the magnetic poles of the NS of the magnet;
A second stator having a protrusion provided on the same plane as the rotation plane of the magnet and facing the other magnetic pole of the NS of the magnet;
A coil for magnetically connecting the first stator and the second stator;
A power generator for a portable device. An eccentric weight that freely rotates around the support shaft;
NS magnetized in the thickness direction, which is attached to the eccentric weight and rotates integrally with the eccentric weight around the support shaft;
A first yoke having a comb tooth portion affected by one of the magnetic poles of the NS of the magnet, attached to the eccentric weight, and integrally rotated about the support shaft together with the eccentric weight;
The first yoke has a comb tooth portion that meshes with the comb tooth portion of the first magnet and is influenced by the other magnetic pole of the NS of the magnet, and is attached to the eccentric weight and rotates together with the eccentric weight around the support shaft. A second yoke that,
A first stator having a protrusion provided on the same plane as the rotation plane of the magnet and facing one of the comb teeth of the first yoke and the comb teeth of the second yoke;
A second stator having a protrusion provided on the same plane as the rotation plane of the magnet and facing the other of the comb teeth of the first yoke and the comb teeth of the second yoke;
A coil for magnetically connecting the first stator and the second stator;
A power generator for a portable device.

Images