JPH0670506A - Automatic drive type generator - Google Patents

Abstract

PURPOSE:To provide an automatic drive type generator capable of generating at a high efficiency placed in a hollow casing with a cylindrical outer shape similar to a AAA dry cell. CONSTITUTION:A weight A making up-and-down reciprocating motion on a guide rail B, conversion means F, G for converting the up-and-down reciprocating linear motion into rotating motion, and generating means C which is connected to the conversion means F, G and rotated and driven in such a manner that the peripheral velocity at the outermost portion of a rotor C5 is higher than the speed of linear motion of the weight A, which are all placed in a container 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a highly efficient and compact self-driving generator used for pagers and the like.

[0002]

2. Description of the Related Art In a conventional pager or the like, a dry battery or a secondary battery having a size of about an AAA battery has been used as a power source. Therefore, depending on the frequency of use and the like, it is necessary to replace and charge the battery quite frequently. On the other hand, in a wristwatch or the like, an automatic drive type generator that converts periodical movements of the human body (eg, walking, etc.) into electric energy is used, and battery replacement or charging is unnecessary.

In this mechanism, a rotatable weight is provided inside and the motion of the human body is converted into rotational energy of the weight.
This rotation energy rotates a small generator to generate electric energy. If such an automatic drive type generator is used for a pager or the like, battery replacement / charging can be dispensed with.

[0004]

However, the conventional automatic generators for wristwatches and the like have the following problems and cannot be used as they are for pagers and the like. That is, in the conventional automatic drive type generator that rotates the weight, in a flat outer shape such as a wristwatch, the turning radius of the weight can be set large, so that the power can be efficiently generated. In the case of a vertically long cylindrical shape such as an AAA battery, the turning radius of the weight becomes small, so that there is a problem that the power generation efficiency is significantly reduced.

[0005] Here, the present invention is to provide an automatic drive generator capable of highly efficient power generation even in a hollow object having a vertically elongated cylindrical structure such as an AAA battery. .

[0006]

The above-mentioned problems can be solved by the present invention by adopting the novel characteristic construction means listed below. That is, the first feature of the present invention is that a weight means that reciprocates up and down on a vertical path, a conversion means that converts a vertical reciprocating linear motion of the weight means into a rotary motion, and a rotation drive by the conversion means. And an electric generator that has an outermost peripheral speed of the rotor greater than the linear motion speed of the weight means in the housing.

A second feature of the present invention is an automatic drive type generator in which the power generating means having the first feature also functions as a weight means.

A third feature of the present invention is that the first or second
In the above feature, the conversion means is an automatic drive generator including a combination of a tension wire having an intermediate portion wound around at least the outer end portion of the rotor shaft, and a pulley if necessary.

A fourth feature of the present invention is that the housing in the first, second or third feature is formed as a hollow cylindrical dry battery type having a positive terminal at one end and a negative terminal at the other end. It is an automatic drive type generator.

[0010]

Since the present invention takes the above-mentioned means, the linear reciprocating motion of the weight means is converted into a rotary motion, and the rotary motion is connected to the power generating means to generate electric power. Highly efficient power generation is possible even for an object having a vertically long external cylindrical hollow structure.

In the principle and operation of the present invention, the reason why the linear reciprocating motion is adopted instead of the rotating motion as the motion form of the weight, that is, in the object having the vertically long external cylindrical hollow structure, the motion form of the weight rotates The reason why it is more effective to adopt the linear reciprocating motion (hereinafter referred to as the linear motion type) rather than the motion (hereinafter referred to as the rotary motion type) will be described below.

First, in the case of the rotary motion type, the weight rotates in synchronization with a vibration cycle (about 1 second) due to a walking motion of a human body or the like. Assuming that the rotation speed is constant, the cross section of the weight has a radius r and a fan shape with an angle θ, the length of the weight is L ₁ , and the density of the weight is ρ.
Then, the kinetic energy E ₁ stored in the weight is given by the following equation (1).

[0013]

[Equation 1] The apparent kinetic energy becomes maximum when θ = 360 °, but if the center of gravity of the weight is not displaced from the center of rotational movement,
Since it is impossible for the weight to rotate due to the acceleration from the outside, θ = 180 ° is set in an actual automatic drive generator.

Next, when the weight reciprocates up and down on the vertical path, the weight reciprocates in synchronization with the vibration cycle of the human body. Assuming that the velocity of movement is constant, the shape of the weight is a cylinder having a radius r and a length L ₂ , the density of the weight is ρ which is the same as that of the rotary motion type, and the moving distance of the weight is L−L ₂ (that is, a cylinder). If the total length of the shape = L), the kinetic energy E _{2 of the} weight is given by the following equation (2).

[Equation 2]

Here, θ = 180 ° for the rotary motion type, L ₂ = L / 3 for the linear motion type, and further, assuming that the linear motion type columnar length L and the rotary motion type weight length L ₁ are equal. , Rotational kinetic and linear kinetic energies E ₁ and E
_If the ratio of ₂ is taken, the following formula (3) is obtained.

[Equation 3]

That is, the ratio of the two is proportional to the square of the aspect ratio (L / r) of the outer shape, and it can be understood that the linear motion type is more advantageous as the length becomes longer. Assuming a AAA battery shape (radius 5 mm, length 42 mm) as the outer shape, E ₂ / E ₁ = 2, and the linear motion type can obtain kinetic energy about twice as high.

[0017]

(Embodiment 1) A first embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a sectional view conceptually showing the internal structure of the automatic drive type generator of the present embodiment, FIG. 2 is a sectional view showing a core generator of the present embodiment, and FIG. 3 is an automatic drive type power generation of the present embodiment. FIG. 3 is a circuit diagram showing a portion that rectifies and stores electric power from a generator portion of the machine.

In the figure, α is an automatic drive generator of this embodiment,
A is a slide weight, B is a guide rail, C is a generator,
C1 is the shaft of the generator C, C2 is the case of the generator C,
C3 is an arc-shaped permanent magnet, C4 is a rotating electrode, C5 is a rotating coil, C6 is a fixed electrode, and C7 is a lead wire for extracting an AC voltage from the generator C.

D is a rectifier, D1 is an input terminal of the rectifier D,
D2 is a diode, D3 is, for example, a capacitor, D4 is an output terminal, F is a wire, G is a guide pulley, 1 is a plus terminal, 2 is a minus terminal, and H is a lead connecting the rectifier D with the plus terminal 1 and the minus terminal 2. A wire 3 is a housing which is a housing, 4 is a motion chamber provided in the housing 3,
5 is the floor of the partition floor, and 6 is the underfloor room.

Next, the detailed structure of this embodiment will be described. First, the slide weight A can freely move up and down on the guide rail B. The wire F is made of a material that is rigid against expansion and contraction of Kevlar (trade name of du Pont Inc. in the United States) and soft against bending, and its both ends slide. It is fixed to the weight A. The wire F is supported by the rotatable guide pulley G of the exercise room 4, passes through the floor 5 of the partition floor, and an intermediate part of the wire F is tightly wound around the shaft C1 of the generator C installed in the underfloor room 6. There is no slippage in the area.

The inside of the generator C has a structure as shown in FIG. The rotating coil C5 can freely rotate about the shaft C1. Rotating coil C5
Two permanent magnets C3 are installed opposite to each other inside the case C2 on both sides of, and their outer surfaces are magnetically coupled by a case C2 made of a magnetic material. The terminal of the rotating coil C5 is connected to the lead wire C7 via the rotating electrode C4 and the fixed electrode C6.

When the rotating coil C5 rotates, the permanent magnet C
The relative position with respect to C3 and C3 changes, the magnetic flux passing through the inside of the rotating coil C5 changes, and an AC voltage is generated between the electrodes C6 and C6. The output of the generator C is connected to the input terminal D1 of the rectifier D.

As shown in FIG. 3, the rectifier D is composed of a bridge of a diode D2 and a capacitor D3, and is configured to generate a DC voltage at the output terminal D4 when an AC voltage is applied to the input terminal D1. ing. The output terminal D4 of the rectifier D is connected to the plus terminal H and the minus terminal I of the automatic drive type generator α via the respective lead wires J.

The specification of the present embodiment is such a concrete embodiment, and the operation principle thereof will be described below. When a person carries the automatic drive generator α of this embodiment while walking, acceleration is applied to the slide weight A. Among these, the slide weight A is moved to the guide rail B by the vertical acceleration component.
Reciprocate up and down. Then, the wire F is pulled and the shaft C1 of the generator C rotates. Shaft C1
Since the diameter of the rotating coil C5 is made sufficiently smaller than the radius of the rotating coil C5, the outer circumference of the rotating coil C5 moves at an extremely high speed as compared with the speed of the slide weight A.

Here, a method for efficiently converting the kinetic energy of the slide weight A into electric energy will be described with reference to the drawings. FIG. 4 is a diagram showing a configuration of an automatic drive type generator having the simplest structure in converting kinetic energy of linear motion into electric energy. In the figure, α'is an automatic drive generator described here, J is an annular moving coil,
K is a permanent magnet and N is a spiral lead wire. The same members as those in the drawings showing the first embodiment are designated by the same reference numerals.

In the structure shown in FIG. 4, the columnar short permanent magnets K are linearly connected to form the guide rail B. An annular moving coil J is slidably installed on the outer side of the guide rail B so that it can freely move up and down on the guide rail B.

The end of the annular moving coil J is connected to the rectifier D via a spiral lead wire N. When acceleration is applied to the automatic drive type generator α'from the outside, the annular moving coil J moves up and down, and when it passes through the NS reversal part of the permanent magnet K, the magnetic flux passing through the annular moving coil J changes, and the annular moving coil J 'changes. An AC voltage is generated at the J end. The AC voltage is
It is converted into direct current by the rectifier D and supplied to the positive terminal 1 and the negative terminal 2.

However, in the structure shown in FIG. 4, the efficiency of conversion into electric energy is very low. Because electromotive force V
Is the magnetic flux passing through the annular moving coil J, Φ is the number of turns,
If time is t, V = n × dΦ / dt is given, but the motion velocity of the annular moving coil J is 84 m.
This is because dΦ / dt is small because it is as low as m / s.

Therefore, in order to increase the electromotive force V, it is necessary to increase the number of turns n of the annular moving coil J. However, for that purpose, the outer diameter of the entire generator is limited, and therefore the wire diameter wound around the annular moving coil J must be reduced. Then, the electrical resistance of the annular moving coil J increases, the current decreases, and the electric power does not increase. That is, in the configuration shown in FIG. 4, the kinetic energy of the annular moving coil J is not sufficiently converted into electric energy, and most of the kinetic energy is the annular moving coil J moving portion housing 1.
It has been lost in a collision at the edge.

In the present embodiment, this is solved by increasing the movement speed of the slide weight A to increase dΦ / dt. That is, the linear motion of the slide weight A is converted into rotary motion by some means (the wire F and the guide pulley G in this embodiment), the generator C is rotated at high speed, and the motion speed of the rotary coil C5 is increased. To increase electromotive force.

In this case, since it is not necessary to increase the number of turns of the rotary coil C5, the current value does not decrease, and most of the kinetic energy of the slide weight A is converted into electric energy. As a result, d in the rotating coil C5
Φ / dt becomes large, and a large AC voltage is generated at the output end of the generator C. This AC voltage is converted to DC by the rectifier D, and the entire automatic drive type generator α functions as a DC power source similar to a normal battery.

As the capacitor D3 used in the rectifier D, a capacitor having a low internal impedance and a large amount of electricity storage is desirable, and thus a secondary battery such as a super capacitor (electric double layer capacitor) or NiCd is suitable.

Although the battery may be overcharged depending on the amount of power generation and the amount of power used, the terminal voltage V increases at a rate of V = Q / μ (μ is the capacitance of the capacitor) as the stored charge amount Q increases. Therefore, if the amount of electricity stored at a predetermined voltage or higher is limited by a pressure limiter (not shown), an excessive voltage will not be applied to the equipment used.

There are various devices such as a constant voltage circuit and a Zener diode in the voltage limiter, but the light emitting diode (LE
If D) is used in series with a Zener diode and an optical window is provided in a part of the housing 3 of the automatic drive generator α, it can be used for monitoring the state of charge.

(Embodiment 2) A second embodiment of the present invention will be described with reference to the drawings. FIG. 5 is a sectional view conceptually explaining the internal structure of the automatic drive type generator of this embodiment. In the figure, β is an automatic drive generator of this embodiment, C'is a slide weight generator, C1 'is a shaft, C7' is a lead wire connecting the slide weight generator C'and the rectifier D, and H '. Is a lead wire connecting the rectifier D with the positive terminal 1 and the negative terminal 2, O is a parallel slider installed side by side in parallel with the slide weight generator C'and mounted through the guide rail B, and 7 is a ceiling. The same members as those in the first embodiment are designated by the same reference numerals.

The slide weight generator C'is freely movable up and down on the guide rail B via the parallel slider O. The wire F is made of a material that is rigid against expansion and contraction of Kevlar and the like and is flexible against bending, and both ends thereof are in the motion chamber 4 of the housing 3.
It is fixed to the ceiling 7 and the partition floor bottom 5. A part of the wire F is wound around the shaft C1 'of the slide weight generator C'. The internal structure of the slide weight generator C'is the same as that of FIG. 2 in the first embodiment.

The present embodiment presents such a concrete embodiment, and its operation will be described below. When a person carries the automatic drive type generator β and walks, the slide weight generator C ′
Acceleration is applied to. Among them, the vertical acceleration component causes the slide weight generator C ′ to reciprocate on the guide rail B. Along with this, the shaft C1 ′ of the slide weight generator C ′ rotates at the winding portion of the wire F. Hereafter, the slide weight generator C'operates on the same principle as that of the first embodiment to generate alternating current, and the rectifier D converts this to direct current.

Although the distance between the slide weight generator C'and the rectifier D changes due to the movement of the slide weight generator C ', in the case of this embodiment, the lead wire C7' is spirally wound. Therefore, the line length changes as the distance changes,
The lead wire C7 'is prevented from being subjected to slack or excessive pulling force.

Further, in the case of this embodiment, since the slide weight generator C'reciprocates due to the acceleration from the outside, its weight contributes to the power generation as kinetic energy. As a result, as compared with the case where the generator C as in the first embodiment is fixed, if the weight and size of the entire automatic drive generators α and β are the same, the stored kinetic energy becomes large, The power generation efficiency is further enhanced.

In the above first and second embodiments, the wire F and the guide pulley G are used to convert the linear motion to the rotary motion. However, these systems are used as a gear and a sprocket. It is possible to easily analogize from the purpose of the present invention to replace and construct a rigid motion conversion system to generate power.

[0041]

As described above, according to the present invention, since electric power is automatically generated by utilizing the exercise of a person carrying a pager or the like, it is possible to eliminate the battery replacement in these devices. Become.

Further, since the structure is such that electric power is efficiently generated with respect to an object having a vertically long external cylindrical shape hollow structure, any device can be used for a conventional pager using an AAA battery. It exhibits excellent usefulness, convenience, and economic efficiency, such as being applicable without modification.

[Brief description of drawings]

FIG. 1 is a sectional view conceptually showing the internal structure of an automatic drive type generator according to a first embodiment of the invention.

FIG. 2 is an enlarged cross-sectional view showing a generator part of the automatic drive type generator.

FIG. 3 is a circuit diagram showing a portion for performing rectification and storage of electric power from a generator portion of the automatic drive type generator.

FIG. 4 is a diagram showing a principle configuration of an automatic drive type generator having the simplest structure in converting kinetic energy of linear motion into electric energy.

FIG. 5 is a sectional view conceptually showing the internal structure of the automatic drive type generator according to the second embodiment of the invention.

[Explanation of symbols]

 α, α ', β ... Automatic drive generator A ... Weight B ... Guide rail C ... Generator C' ... Slide weight generator C1, C1 '... Shaft C2 ... Case C3, K ... Permanent magnet C4 ... Rotating electrode C5, J ... Coil C6 ... Fixed electrode C7, C7 ', H, H', N ... Lead wire D ... Rectifier D1 ... Input terminal D2 ... Diode D3 ... Capacitor D4 ... Output terminal F ... Wire G ... Guide pulley O ... Slider 1 ... Positive terminal 2 ... Minus terminal 3 ... Housing 4 ... Exercise room 5 ... Partition floor bottom 6 ... Underfloor room 7 ... Ceiling

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yasuhiro Koshimoto 1-1-6 Uchisaiwai-cho, Chiyoda-ku, Tokyo Nihon Telegraph and Telephone Corporation (72) Inventor Kiyoshi Itao 1-1-1 Uchisai-cho, Chiyoda-ku, Tokyo No. 6 Nihon Telegraph and Telephone Corporation (72) Inventor, Shunji Ota 6-31-1 Kameido, Koto-ku, Tokyo Seiko Electronics Co., Ltd. (72) Inventor Masao Kasuga 6-chome, Kameido, Koto-ku, Tokyo 31-1 Seiko Electronics Co., Ltd. (72) Inventor Koichiro Negishi 6-31 Kameido, Koto-ku, Tokyo Seiko Electronics Co., Ltd. (72) Inventor Tetsuo Uchiyama 7 Nishi-Shinjuku, Shinjuku-ku, Tokyo Chome 5-10 Inside the equity corporation

Claims (4)

[Claims] 1. A weight means for reciprocating up and down on a vertical path, a converting means for converting a vertical reciprocating linear motion of the weight means into a rotary motion, and being rotationally driven and rotated in connection with the converting means. An automatic drive generator comprising: a power generating means having a peripheral speed of the outermost part of the child higher than a linear movement speed of the weight means in the housing. 2. The automatic drive type generator according to claim 1, wherein the power generation means also serves as a weight means. 3. The automatic converting apparatus according to claim 1, wherein the converting means is a combination of a tension wire having an intermediate portion wound around at least an outer end portion of the rotor shaft, and a pulley if necessary. Driven generator. 4. The automatic drive generator according to claim 1, wherein the housing is formed as a dry battery type of a hollow cylinder having a positive terminal at one end and a negative terminal at the other end.