Patent Publication Number: US-2018041097-A1

Title: Rotating power amplifying apparatus, rotary power generating apparatus and generator

Description:
TECHNICAL FIELD 
     This disclosure relates to a rotating power amplifying apparatus capable of generating electric power, and a rotary power generating apparatus and generator including the same. 
     BACKGROUND 
     In general, as disclosed in Japanese Unexamined Patent Application Publication No. 2010-60124, as a rotating power amplifying apparatus that converts rotating energy into electric power using shaft output, an apparatus that maintains a rotational speed by surrounding a rotary shaft with rolling elements is known. 
     In addition, Japanese Unexamined Patent Application Publication No. 2004-124860 discloses a gravity type generator in which a counterweight is hung from a pulley and a generator rotated using a force obtained when the counterweight falls due to gravitational force (in particular, see  FIG. 1 ). Further, PCT International Publication No. WO 2009/122683 discloses a solenoid valve using an electric double layer capacitor as a power supply. 
     However, since the rotating power amplifying apparatus disclosed in JP &#39;124 converts rotating power into electric power and keeps the power generation amount below the input rotating power rather than letting it exceed the input rotating power, the rotating power amplifying apparatus is insufficient in view of efficient use of energy. In addition, JP &#39;860 has problems in that, if the counterweight completely falls, power generation may be stopped, and the apparatus is insufficient as a continuous generator and not a stable power source. Further, WO &#39;683 is an attempt to enable reduction in a size of an exclusive power supply to be driven, and reduction in space in a solenoid valve, and improvement of power generation efficiency and use as a stable power supply of a solenoid valve have not been studied. 
     Accordingly, it could be helpful to provide a rotating power amplifying apparatus capable of continuously generating electric power as a stable electric power supply source while further improving power generation efficiency of electric power obtained by rotation, and a rotary power generating apparatus and generator including the same. 
     SUMMARY 
     We thus provide: 
     A rotating power amplifying apparatus includes a main shaft having a central axis that is horizontally installed; a main rotating body supported by the main shaft and rotatable about the central axis of the main shaft; and a repellent force generating mechanism installed around the central axis, having a repellent force generating member that is displaceable around the central axis, configured to displace the repellent force generating member and generate a repellent force by rotation of the main rotating body, and configured to rotate the main rotating body. 
     The main rotating body may include at least one balance weight that is rotatable about the central axis. 
     The repellent force generating mechanism may include a first magnet and a second magnet serving as the repellent force generating member and disposed concentric with each other around the central axis of the main shaft, a relative position between the first magnet and the second magnet may be displaced in the rotational direction of the main rotating body by rotation of the main rotating body, and a repellent force may be generated by a repulsive force generated between the first magnet and the second magnet. 
     The repellent force generating mechanism may include a spring serving as the repellent force generating member, and the spring may be displaced by rotation of the main rotating body, and a repellent force may be generated by the displaced spring. 
     The rotating power amplifying apparatus may include a driving gear that rotates about the central axis of the main shaft; a fixed gear fixed to the main shaft; a planetary gear that rotates about a central axis different from the central axis of the main shaft; a balance weight supported by a balance weight arm supported by a central axis of the planetary gear and rotating about the central axis of the planetary gear; and a gear case integrally fixed to the driving gear and configured to house the fixed gear and the planetary gear. 
     The main rotating body may include a partition spring therein and have a ball movement box having an elliptical shape and configured to house a counterweight ball. 
     The main rotating body may have a ball swing box having an arcuate shape and configured to house a counterweight ball, and the counterweight ball may be temporarily held in a concave section formed in the arcuate shape. 
     In addition, an Osmund spring may be installed at a subsidiary shaft different from the main shaft. 
     A rotary power generating apparatus may include the rotating power amplifying apparatus; and a rotating power output apparatus connected to the main rotating body and configured to output rotating power according to rotation of the main rotating body. 
     Our generator may include the rotating power amplifying apparatus; and a power generating apparatus connected to the main rotating body and configured to generate electric power according to rotation of the main rotating body. 
     It is thus possible to provide a rotating power amplifying apparatus capable of continuously generating electric power and remarkably improving power generation efficiency of electric power obtained by rotation, and a rotary power generating apparatus and generator including the same. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a view showing a rotating power amplifying apparatus including a magnet according to a first example. 
         FIG. 2( a )  is a view showing a configuration of the rotating power amplifying apparatus according to the first example when an electromagnet is provided in a magnet holder, and  FIG. 2( b )  is a view showing a configuration when a permanent magnet is provided in the magnet holder. 
         FIGS. 3( a ) to 3( c )  are views showing rotation of a rotor of the rotating power amplifying apparatus according to the first example. 
         FIG. 4  is a view showing a rotating power amplifying apparatus including a spring according to a second example. 
         FIG. 5( a )  is a view showing a configuration to wind and squeeze the spring in the rotating power amplifying apparatus according to the second example, and  FIG. 5( b )  is a view showing a configuration to release the spring. 
         FIG. 6  is a view showing a configuration of a cam rod in the rotating power amplifying apparatus according to the second example. 
         FIG. 7  is a view showing a rotating power amplifying apparatus including a gravity gear according to a third example. 
         FIG. 8  is a cross-sectional view in a direction of an arrow of the rotating power amplifying apparatus shown in  FIG. 7 . 
         FIG. 9( a )  is a view showing a driving principle of the rotating power amplifying apparatus according to the third example,  FIG. 9( b )  is a view showing a configuration of a position of a maximum torque by a balance weight, and  FIG. 9( c )  is a view showing a position of a configuration of a minimum torque by the balance weight. 
         FIG. 10( a )  is a view showing a front surface of a rotating power amplifying apparatus including a counterweight ball movement box according to a fourth example, and  FIG. 10( b )  is a view showing a side surface thereof. 
         FIGS. 11( a ) to 11( c )  are views showing operation principles of a counterweight ball and a movement box of the rotating power amplifying apparatus according to the fourth example. 
         FIG. 12( a )  is a view showing a front surface of a rotating power amplifying apparatus including a counterweight ball swing box according to a fifth example, and  FIG. 12( b )  is a view showing a side surface thereof. 
         FIG. 13  is a view showing a configuration of the counterweight ball swing box of the rotating power amplifying apparatus according to the fifth example. 
         FIGS. 14( a ) to 14( c )  are views showing operation principles of a counterweight ball and a swing box of the rotating power amplifying apparatus according to the fifth example, and  FIG. 14( d )  is a view showing a trajectory of the counterweight ball. 
         FIG. 15( a )  is a view showing a rotating power amplifying apparatus according to a sixth example when seen from above, and  FIG. 15( b )  is a view showing the rotating power amplifying apparatus according to the sixth example when seen from a front side. 
         FIG. 16  is a view showing an attachment structure of an Osmund spring. 
         FIGS. 17( a ) and 17( b )  are views showing an operation principle of the rotating power amplifying apparatus according to the sixth example. 
         FIG. 18  is a view showing control of a motor and movement of the balance weight when a stepping motor is used as a driving motor. 
     
    
    
     REFERENCE SIGNS LIST 
     
         
           100  Rotating power amplifying apparatus 
           101  Housing (frame) 
           103  Main shaft 
           104  Bearing 
           106  Main rotating body (rotor) 
           111  Balance weight A 
           112  Balance weight arm 
           115  Balance weight B 
           116  Balance weight arm 
           118  Repellent force generating mechanism 
           121  Magnet a 
           123  Magnet b 
           126  Magnet holder 
           127  Magnet holder bracket 
           130  Magnet included in main rotating body (rotor) 
           131  Permanent magnet 
         TH 1  Installation angle between balance weight arms 
           200  Rotating power amplifying apparatus 
           201  Housing (frame) 
           203  Main shaft 
           204  Bearing 
           206  Main rotating body 
           211  Balance weight 
           212  Balance weight arm 
           221  Gear a 
           222  Gear b 
           223  Gear a′ 
           224  Gear b′ 
           230  Repellent force generating mechanism 
           231  Spring 
           241  Main shaft pin 
           242  Gear b pin 
           250  Cam mechanism 
           251  Cam 
           252  Cam pin 
           253  Cam rod 
           254  Cam rod receiving hole 
           256  Thrust bearing 
           257  Radial thrust bearing 
           261  Subsidiary shaft 
           262  Subsidiary shaft pin 
           263  Subsidiary shaft pin guide 
           300  Rotating power amplifying apparatus 
           301  Housing (frame) 
           303  Main shaft 
           306  Main rotating body (rotor) 
           311  Balance weight 
           312  Balance weight arm 
           321  Driving gear 
           323  Gear case 
           324  Fixed gear 
           325  Idler 
           326  Idler shaft 
           328  Planetary gear 
           331  Bearing 
           332  Main shaft fixing bracket 
           341  Planetary gear shaft 
           351  Main shaft center vertical line 
           352  Planetary gear center trajectory 
           353  Balance weight center trajectory 
           400  Rotating power amplifying apparatus 
           401  Housing (frame) 
           403  Main shaft 
           404  Bearing 
           406  Disk-shaped rotor 
           411  Counterweight ball movement box 
           412  Partition spring 
           415  Counterweight ball 
           421  Disk-shaped rotor center vertical line 
           422  Disk-shaped rotor outer edge (perfect circle) 
           500  Rotating power amplifying apparatus 
           501  Housing (frame) 
           503  Main shaft 
           504  Bearing 
           506  Disk-shaped rotor 
           511  Counterweight ball swing box 
           512  Counterweight ball swing box inner circumferential section 
           513  Counterweight ball swing box outer edge portion 
           514  Counterweight ball receiving section 
           515  Counterweight ball 
           521  Disk-shaped rotor center vertical line 
           522  Disk-shaped rotor outer circumferential circle (perfect circle) 
           600  Rotating power amplifying apparatus 
           601  Housing (frame) 
           603  Main shaft 
           607  Main shaft gear 
           611  Balance weight 
           612  Balance weight arm 
           621  Bearing a 
           622  Bearing b 
           623  Bearing 
           625  Subsidiary shaft 
           626  Subsidiary shaft gear 
           628  Drive transmission gear 
           629  Speed adjustment gear 
           631  Spring case 
           632  Spring case gear 
           633  Spring case cover 
           634  Osmund spring 
           641  Main shaft gear reference pitch circle 
           642  Subsidiary shaft gear reference pitch circle 
           643  Spring case gear reference pitch circle 
           644  Drive transmission gear reference pitch circle 
           645  Speed adjustment gear reference pitch circle 
           651  Driving motor 
           652  Acceleration zone 
           653  Constant speed zone 
           654  Deceleration zone 
           655  Rotation stoppage/electric conduction minimum zone 
           656  Rotation of both of balance weight and spring case gear 
           657  Rotation of balance weight only 
           661  Motor control box 
           663  Rotation sensor 
       
    
     DETAILED DESCRIPTION 
     A rotating power amplifying apparatus according to examples, and a rotary power generating apparatus and generator including the rotating power amplifying apparatus will be described below. 
     First Example 
       FIG. 1  shows a rotating power amplifying apparatus  100  according to the first example. 
     The rotating power amplifying apparatus  100  according to the first example includes a main shaft  103 , a main rotating body (hereinafter referred to also as “a rotor”)  106  rotated about the main shaft  103 , a plurality of balance weights  111  and  115  axially supported by the main shaft  103  and rotatable about the main shaft  103 , a magnet  130  installed at the main rotating body  106  and rotatable about the central axis about which the main rotating body  106  rotates, a magnet holder  126  disposed concentrically with a central axis about which the main rotating body  106  rotates, and magnets  121  and  123  installed in the magnet holder  126 . 
     The magnet holder  126  holds the magnet  130  from both sides, is disposed in the same concentric circular shape as the magnet  130  with respect to the central axis about which the main rotating body  106  rotates, and is fixed to a frame  101 . 
     The rotating power amplifying apparatus  100  according to the first example includes the magnet  130  and a repellent force generating mechanism  118  configured to generate a repellent force by a repulsive force generated between the magnets  121  and  123 . 
     The rotating power amplifying apparatus  100  according to the first example amplifies a rotating power using a falling moment of the balance weight and a repellent force of the magnets generated by the repellent force generating mechanism  118 . 
     The rotating power amplifying apparatus according to the first example will be further described below. 
     In the rotating power amplifying apparatus  100  according to the first example, the main shaft  103  is installed at the frame  101  via a bearing such that a central axis thereof is horizontal. The main shaft  103  is rotatable about the central axis, and is used to add a starting torque to the apparatus of the example and extract shaft output. The main rotating body  106  rotates about a rotational center axis shared with the main shaft  103 . Accordingly, the main rotating body  106  rotates about the main shaft  103 . 
     The balance weights  111  and  115  are counterweights attached to tips of balance weight arms  112  and  116 . The balance weights are fixed to the main shaft by the balance weight arms and rotated with the main shaft. Lengths of the balance weight arms are set to specified lengths that are different from each other. For example, lengths of a balance weight arm  112  of a balance weight A  111  and a balance weight arm  116  of a balance weight B  115  are set to the length of the arm of the balance weight A:the length of the arm of the balance weight B=2:1. Further, the balance weight may be formed of a material having weight. The balance weight may be formed of, for example, iron. 
     In the balance weight arms  112  and  116 , when each of the balance weight arms  112  and  116  is raised to attenuate interference with a rotating power of the main shaft  103 , the balance weight arms  112  and  116  are preferably installed at a specified opening angle TH 1 . For example, the specified opening angle TH 1  of the balance weight arms  112  and  116  is 110 degrees. 
     Next, the repellent force generating mechanism  118  configured to generate a repellent force by the magnets will be described. 
     The rotor  106  configured to hold the magnet  130  is fixed to the main shaft  103  and rotated with the main shaft  103 . For example, a permanent magnet  131  is used as the magnet  130  held at the rotor  106 . The rotor  106  is disposed not to interfere with rotation of the balance weight arms  112  and  116 . Then, when the magnet  130  is the permanent magnet  131 , a plurality of permanent magnets  131  are present, and the plurality of permanent magnets  131  are disposed in a fan shape on a circle concentric with the main shaft at equal intervals as a whole. A fan-shaped disposition angle of the permanent magnets  131  (an angle formed between centers of the permanent magnets  131  of both ends and the central axis) is preferably equal to the opening angle TH 1  of the balance weight arms  112  and  116 . The magnet  130  may also be an electromagnet. 
       FIGS. 2( a ) and 2( b )  are views when seen from an arrow A of  FIG. 1 .  FIG. 2( a )  shows a configuration of the rotating power amplifying apparatus of the example when magnets a  121  serving as electromagnets are installed in the magnet holder, and  FIG. 2( b )  shows a configuration when magnets b  123  serving as permanent magnets are installed in the magnet holder. 
     As shown in  FIGS. 1, 2 ( a ) and  2 ( b ), the magnet holder  126  is disposed at a position at which it holds the rotor from both sides when the rotor  106  is rotated. The positions at which the magnet holder  126  is disposed with respect to the main shaft  103  is a position at which gravitational forces of the balance weight A  111  and the balance weight B  115  generate a rotational moment in a direction opposite to a rotational direction of the apparatus of the example. Specifically, in  FIG. 1 , the magnet holder  126  is preferably disposed at positions from 12 o&#39;clock to 8 o&#39;clock on a clock face. 
     The magnets a  121  serving as the electromagnets or the magnets b  123  serving as the permanent magnets are disposed in the magnet holder  126 . The magnets a  121  or the magnets b  123  are disposed in a fan shape at equal intervals to form a circle concentric with the magnet  130  in the rotor serving as the permanent magnet. The magnets a  121  or the magnets b  123  in the magnet holder  126  are disposed to face the same polarity as the magnet  130  in the rotor when the magnet  130  passes through the magnet holder  126 . 
     As shown in  FIG. 2( a ) , when the magnets a  121  serving as the electromagnets are installed in the magnet holder  126 , the rotor  106  and the magnet holder  126  are preferably disposed in parallel to and adjacent to each other. 
     As shown in  FIG. 2( b ) , when the magnets b  123  serving as the permanent magnets are installed in the magnet holder  126  to attenuate repulsion generated when the permanent magnets in the rotor  106  approach each other while rotating, the magnet holder  126  is preferably disposed in a truncated chevron shape with respect to the main shaft  103  such that a distance between sides of the magnet holder  126  is reduced away from the main shaft  103 . Even when the magnet holder  126  is disposed at the main shaft  103  in the truncated chevron shape, surfaces in which the magnets b  123  and the permanent magnets in the magnet holder  126  are opposite to each other are preferably disposed in parallel to each other. 
     Referring to  FIGS. 3( a ) to 3( c ) , an operation of the rotating power amplifying apparatus according to the first example will be described. 
     Gravitational force is applied to both of the balance weight A  111  and the balance weight B  115  in the rotational direction, and rotational movement is accelerated by the gravitational force applied to the balance weight A  111  and the balance weight B  115  at the position at which the rotational moment occurs in the rotational direction. 
     A magnet  131  in the rotor can push the rotor  106  in the magnet holder  126  in the rotational direction even when a repulsive force occurs between the magnet in the rotor and the magnets in the magnet holder because the balance weight A  111  has the largest value of the rotational moment with respect to the rotational direction at a position at which the magnet  131  in the rotor is adjacent to the magnets a  121  or the magnets b  123  in the magnet holder  126  (see  FIG. 3( a ) ). 
     As the magnets a  121  serving as the electromagnets are excited such that the magnets face the same polarity as the surface of the permanent magnet in the rotor  106  at the position at which the balance weight A  111  generates a rotational moment opposite to the rotational direction, rotation can be maintained by the repulsive force generated between the magnets a  121  and the magnet  130  in the rotor  106 . A force generated by inertia of the balance weight B  115  also promotes rotation (see  FIG. 3( b ) ). 
     The balance weight arm  112  of the balance weight A  111  is longer than the balance weight arm  116  of the balance weight B  115  at the position at which the balance weight B  115  generates the rotational moment opposite to the rotational direction. For this reason, a difference between the rotational moment of the balance weight A  111  and the balance weight arm  112  and the rotational moment of the balance weight B  115  and the balance weight arm  116  contributes to maintaining rotation (see  FIG. 3( c ) ). 
     As described above, the rotating power amplifying apparatus according to the first example can amplify a rotating power using a falling moment of the balance weight and a repellent force of the magnet. That is, it is possible to provide a rotating power amplifying apparatus capable of generating electric power substantially continuously and remarkably improving power generation efficiency of electric power obtained by rotation while applying little starting energy. 
     Second Example 
       FIG. 4  shows a rotating power amplifying apparatus  200  according to the second example. 
     The rotating power amplifying apparatus  200  according to the second example includes a main shaft  203 , a main rotating body  206  serving as a rotating target that rotates about the main shaft  203 , a balance weight  211  and a balance weight arm  212 , which are axially supported by the main shaft  203 , constituting a portion of the main rotating body  206  and rotatable about the main shaft  203 , a gear a  221  that is axially supported like the balance weight  211  and the balance weight arm  212 , a gear b  222  rotatably attached to the main shaft  203 , a spring  231  having a coil spring shape and attached to the gear b  222 , a cam mechanism  250  configured to fix the gear b  222  such that the spring  231  is wound and squeezed and release the gear b  222  such that the spring  231  is released, and a gear a′  223  and a gear b′  224  configured to receive rotating power to cause the spring  231  to be wound and unwound, in a specified disposition. 
     That is, the rotating power amplifying apparatus according to the second example includes a repellent force generating mechanism  230  configured to generate a repellent force by the spring  231  to be wound and then unwound. 
     The rotating power amplifying apparatus according to the second example amplifies a rotating power using a falling moment of the balance weight and a repellent force of the spring generated by the repellent force generating mechanism  230 . 
     The rotating power amplifying apparatus according to the second example will be further described below. 
     The main shaft  203  is rotatably installed at a frame  201  via a bearing  204  such that a central axis of rotation thereof is horizontal. The main shaft  203  is used to add a starting torque to the apparatus of the example or extract the shaft output. 
     As shown in  FIGS. 4 and 5 ( a ) to  5 ( b ), the gear a  221  and the gear a′  223  have the same pitch diameter and module, and the gear b  222  and the gear b′  224  have the same pitch diameter and module and different tooth thicknesses. The gear a  221  is fixedly disposed at the main shaft  203 . On the other hand, the gear b  222  is disposed rotatably with respect to the main shaft  203 . 
     As shown in  FIGS. 5( a ) and 5( b )  ( FIG. 5  is a view seen from an arrow Z of  FIG. 4 ), a gear b pin  242  is installed on the gear b  222 , and a main shaft pin  241  is formed on the main shaft  203 . The spring  231  is installed such that an end portion of the spring  231  is held by the gear b pin  242  and the main shaft pin  241 , and a center of a spiral section of the spring  231  coincides with the main shaft  203 . 
     When the spring  231  is shown with reference to  FIG. 4 , the spring  231  is installed at the gear b  222  such that the center of the spiral section coincides with the main shaft  203 . 
       FIG. 6  shows a configuration of the cam mechanism  250 . As shown in  FIG. 6 , a cam  251  is fixed to the main shaft  203 . In addition, a hole  254  that receives a cam rod  253  is perforated in the gear b  222  in a circular shape concentric with the main shaft  203 . Rotation of the balance weight A  211  is promoted by the gravitational force working on the balance weight A  211  at the position at which a balance weight A  211  generates an effective rotational moment in the rotational direction. In addition, since the gear b  222  is fixed onto the main shaft  203  via the cam rod  253  by the cam  251  at that position, the spring  231  is wound and squeezed by the main shaft pin  241 . In the example, the spring  231  is wound and squeezed to, for example, 180 degrees. 
     At the position at which the balance weight A  211  generates a rotational moment against the rotational direction, since the cam rod  253  is removed from the gear b  222  by the cam  251 , the gear b  222  obtains the rotating power in the rotational direction via a gear pin by a releasing power of the spring  231 . 
     In the example, the cam rod  253  is attached to the frame  201  by a thrust bearing  256  and a radial thrust bearing  257 . The thrust bearing  256  moves in a thrust direction, and the radial thrust bearing  257  bears a rotating power of a subsidiary shaft  261  and a thrust load in an axial direction. In this way, by thrusting the subsidiary shaft  261  in a bearing direction, the gear b  222  and the gear a′  223  are meshed. At the position at which the balance weight A  211  generates the rotational moment against the rotational direction, the subsidiary shaft  261  is moved by the cam  251 , and the gear b  222  and the gear a′  223  are meshed and moved. A cam pin  252  that has entered the groove of the cam  251  moves the cam rod  253  (in  FIG. 5 , moves the cam rod  253  right/left) to engage the gears with each other or release engagement therebetween. 
     Both the gear a′  223  and the gear b′  224  are fixed to the subsidiary shaft  261 . In addition, the gear b′  224  and the gear a  221  on the main shaft  203  are installed to be meshed under normal circumstances. Accordingly, rotation of the gear a  221  and the gear a′  223  is synchronized. If the groove of the cam  251  is appropriately set, when the cam rod  253  is removed from the gear b  222  by the cam  251 , the gear b  222  and the gear a′  223  are meshed. Accordingly, the releasing power of the spring  231  is transmitted to the gear a′  223  via the gear b  222 , and a force of raising the balance weight  211  in a rotational direction can be obtained. 
     In this way, in the rotating power amplifying apparatus according to the second example, the balance weight can be rotated to obtain effective rotating power by the gravitational force working on the balance weight A at the position at which the balance weight A generates the rotational moment effective in the rotational direction and by a winding/squeezing repellent force of the spring at the position at which the balance weight A generates the rotational moment against the rotational direction. 
     As described above, the rotating power amplifying apparatus according to the second example can amplify the rotating power using the falling moment of the balance weight and the winding/squeezing repellent force of the spring. That is, it is possible to provide the rotating power amplifying apparatus capable of generating electric power substantially continuously and remarkably improving power generation efficiency of electric power obtained by rotation while applying little starting energy. 
     Third Example 
       FIG. 7  shows a rotating power amplifying apparatus  300  according to a third example. 
     The rotating power amplifying apparatus  300  according to the third example includes a gear case  323  fixed to a rotating body serving as a rotating target that rotates about a main shaft  303 , one gear fixed to the main shaft and installed in the gear case  323  that rotates about the main shaft, a planetary gear  328  that is installed in the gear case  323  and rotates about a planetary gear shaft different from the main shaft  303 , and a balance weight  311  that rotates about the planetary gear shaft. 
     The rotating power amplifying apparatus according to the third example continues rotation by rotating the balance weight at an advantageous position at which the rotating power is generated using a combination of the dropping rotational moment of the balance weight and the gear. 
     In the rotating power amplifying apparatus  300  according to the third example, a driving gear  321  and the gear case  323  are integrated, and when a starting torque is applied to the apparatus or when the shaft output is extracted from the apparatus, the driving gear  321  is used. 
     The main shaft  303  is horizontally fixed to a frame  301  via a fixing bracket. A fixed gear  324 , an idler (gear)  325  and the planetary gear  328  are combined and installed in the gear case  323 . The driving gear  321 , the gear case  323  and the fixed gear  324  that rotate about the main shaft constitute a main rotating body (a rotor)  306  fixed to the main shaft and rotating about the main shaft. 
     The fixed gear  324  and the planetary gear  328  have the same pitch diameter and module. In addition, the fixed gear  324  and the planetary gear  328  also preferably have the same tooth thickness. The module of the idler  325  coincides with another gear. 
     Next, an operation of the rotating power amplifying apparatus according to the third example and a structure that generates a driving force will be described with reference to  FIGS. 9( a ) to 9( c ) . 
       FIG. 9( a )  shows positions of one period of rotating operations of the balance weight  311  and a balance weight arm  312  of the rotating power amplifying apparatus according to the third example. 
     The planetary gear  328  is fixed to a planetary gear shaft  341 , and rotates about the planetary gear shaft  341  as a central axis. Then, the balance weight arm  312  is fixed to the planetary gear shaft  341  configured to fix the planetary gear  328 , and the balance weight  311  attached to tips of the balance weight arm  312  and the balance weight arm  312  are rotated using the planetary gear shaft  341  as a central axis of rotation of the balance weight arm  312 . 
     The fixed gear  324  and the planetary gear  328  are not affected by a pitch circle of the idler  325  because structures of the teeth are identical to each other. For this reason, in the planetary gear shaft  341  serving as the central axis of the planetary gear  328 , an angle formed by a longitudinal direction of the balance weight arm  312  and a horizontal plane is not varied, regardless of the rotational position at which the gear case  323  is disposed. That is, an attachment angle with respect to the horizontal plane in the longitudinal direction of the balance weight arm  312  with respect to the planetary gear shaft  341  is not varied, regardless of the rotational position at which the gear case  323  is disposed, and an attachment angle initially set to the horizontal plane in the longitudinal direction of the balance weight arm  312  with respect to the planetary gear shaft  341  is maintained. 
     As shown in  FIG. 9( a ) , in the rotating power amplifying apparatus according to the third example, when the balance weight  311  and the gear case  323  are rotated, the balance weight  311  is rotated along a balance weight center trajectory  353 . 
     As described above, the attachment angle with respect to the horizontal plane in the longitudinal direction of the balance weight arm  312  with respect to the planetary gear shaft  341  is not varied, regardless of the rotational position at which the gear case  323  is disposed, and the attachment angle initially set to the horizontal plane in the longitudinal direction of the balance weight arm  312  with respect to the planetary gear shaft  341  is maintained. 
     In this way, since an angle with respect to the horizontal plane in the longitudinal direction of the balance weight arm  312  is maintained, the rotational moment of the balance weight  311  and the balance weight arm  312  is zero or a positive value with respect to the rotational direction with reference to the main shaft  303 . 
       FIG. 9( b )  shows a position at which the balance weight  311  generates the largest rotational moment in the rotational direction of the gear case  323 . 
     In addition,  FIG. 9( c )  shows a position at which the balance weight  311  generates the smallest rotational moment in the rotational direction of the gear case  323 . A value of the rotational moment is a non-negative value in the rotational direction even at a position at which the smallest rotational moment occurs. Accordingly, in the rotating power amplifying apparatus according to the example, the balance weight  311  does not generate a rotational moment opposite to the rotational direction with respect to the main shaft  303 . 
     As described above, the balance weight  311  is disposed at a position at which the rotational moment is zero or positive in the rotational direction when seen from a main shaft core (the main shaft  303 ) at positions of the balance weight center trajectory  353 . Accordingly, the gear case  323  and the driving gear  321  can obtain excellent rotation efficiency. 
     As described above, the rotating power amplifying apparatus according to the third example can amplify the rotating power using a combination of the falling moment of the balance weight and the gear. That is, it is possible to provide the rotating power amplifying apparatus capable of generating electric power substantially continuously and remarkably improving power generation efficiency of electric power obtained by rotation while applying little starting energy. 
     Fourth Example 
       FIGS. 10( a ) and 10( b )  show a rotating power amplifying apparatus  400  according to the fourth example. 
     The rotating power amplifying apparatus  400  according to the fourth example includes a disk-shaped rotor  406  axially supported at a position of a main shaft  403  of a rotating body serving as a rotating target, a counterweight ball movement box  411  fixed to the disk-shaped rotor  406  and configured to receive a counterweight ball  415 , and a partition spring  412  installed in the counterweight ball movement box  411 . 
     The rotating power amplifying apparatus  400  according to the fourth example can house the counterweight ball  415  in the counterweight ball movement box  411  including the partition spring  412  therein, and amplify a rotating power using gravitational force and a centrifugal force of the counterweight ball  415 . 
     In the rotating power amplifying apparatus  400  according to the fourth example, the main shaft  403  serving as a central axis is horizontally installed at a frame  401  via a bearing  404 . The main shaft  403  is used to apply a starting torque to the apparatus of the example or extract the shaft output. 
     The counterweight ball  415  is formed of a material having weight in a spherical shape. In the example, the counterweight ball  415  is, for example, an iron ball. 
     The counterweight ball movement box  411  is formed of a material capable of withstanding movement of the counterweight ball  415 . When seen from a front view of  FIG. 10( a ) , the counterweight ball movement box  411  is formed in an elliptical shape. The counterweight ball  415  can easily move in an upward/downward direction. In addition, as shown in  FIG. 10( b ) , a clearance between a wall surface of the counterweight ball movement box  411  and the counterweight ball  415  in the forward/rearward direction can be decreased. 
     As shown in  FIG. 10( a ) , the partition spring  412  is fixed to an elliptical inner surface having a gentle curvature of the counterweight ball movement box  411  having an elliptical shape. The partition spring  412  is formed of a material that can withstand repeated loads applied by the counterweight ball  415 . A spring repellent force of a tip portion of the partition spring  412  is preferably set to be weaker than a spring repellent portion of a fixing base portion of the partition spring  412 . In the example, the partition spring  412  is formed of, for example, a stainless spring material. 
     Operations of the counterweight ball  415  and the counterweight ball movement box  411  of the rotating power amplifying apparatus according to the fourth example will be described with reference to  FIGS. 11( a ) and 11( b ) . 
     As shown in  FIG. 11( a ) , when the disk-shaped rotor  406  is rotated in the rotational direction, the counterweight ball  415  in the counterweight ball movement box  411  is pressed against the wall surface of the counterweight ball movement box  411  by the gravitational force and the centrifugal force at a position A of  FIG. 11( a )  at a right side of a disk-shaped rotor center vertical line  421  in the drawing. Then, when the disk-shaped rotor  406  is further rotated and the counterweight ball  415  enters a left side of the disk-shaped rotor center vertical line  421  in the drawing, the counterweight ball is scooped up by the partition spring  412  at a position B of  FIG. 11( a )  and dropped below the wall surface of the counterweight ball movement box  411 . Next, the counterweight ball  415  is rotated with the disk-shaped rotor  406  while moving along the wall surface of the counterweight ball movement box  411  by gravitational force and an inertial force at a position C of  FIG. 11( a ) . 
       FIG. 11( c )  shows a trajectory of the counterweight ball  415  in the rotating power amplifying apparatus according to the fourth example. 
     As shown by the trajectory of the counterweight ball  415  of  FIG. 11( c ) , the rotational moment exerted on the main shaft  403  of the counterweight ball  415  is larger at the right side of the disk-shaped rotor center vertical line  421  in the drawing than at the left side in the drawing. Accordingly, in the rotating power amplifying apparatus according to the fourth example, as the revolving speed at which the gravitational force of the counterweight ball  415  effectively works is appropriately selected, rotation efficiency of the disk-shaped rotor  406  can be increased, and rotating power of the disk-shaped rotor  406  can be largely amplified. 
     Fifth Example 
       FIGS. 12( a ) and 12( b )  show a rotating power amplifying apparatus  500  according to a fifth example. 
     The rotating power amplifying apparatus  500  according to the fifth example includes a disk-shaped rotor  506  axially supported at a position of a main shaft  503  of a rotating body serving as a rotating target, and a counterweight ball swing box  511  fixed to the disk-shaped rotor  506  and configured to receive a counterweight ball  515 , and the counterweight ball swing box  511  includes a counterweight ball receiving section  514  therein. 
     The rotating power amplifying apparatus  500  according to the fifth example can house the counterweight ball  515  in the shape of a concave section adjacent to an arcuate chord, an arc, and an intersection at which the chord and the arc intersect, which are formed in the counterweight ball swing box  511 , and amplify the rotating power using gravitational force and a centrifugal force of the counterweight ball  515 . 
     In the rotating power amplifying apparatus  500  according to the fifth example, the main shaft  503  serving as the central axis is horizontally installed at a frame  501  via a bearing  504 . The main shaft  503  is used to add the starting torque to the apparatus of the example and extract the shaft output. 
     The counterweight ball  515  is formed of a material having weight in a spherical shape. In the rotating power amplifying apparatus of the example, the counterweight ball  515  is, for example, an iron ball. 
     The counterweight ball swing box  511  is formed of a material capable of withstanding movement of the counterweight ball  515 . When seen from a front surface of  FIG. 12( a ) , the counterweight ball  515  can easily move in the upward/downward direction. In addition, as shown in  FIG. 12( b ) , a clearance between a wall surface of the counterweight ball swing box  511  and the counterweight ball  515  can be decreased in the forward/rearward direction. 
     As shown in  FIG. 13 , the counterweight ball swing box  511  of the rotating power amplifying apparatus of the example includes a concave section adjacent to an intersection of an arcuate chord and an arc, i.e., one side of an intersection between an inner circumferential section  512  and an outer edge portion  513  of the counterweight ball swing box  511 . The concave section is the counterweight ball receiving section  514  configured to temporarily hold the counterweight ball. 
     Operations of the counterweight ball and the counterweight ball swing box of the rotating power amplifying apparatus of the fifth example will be described. 
     As shown in  FIGS. 14( a ) to 14( c ) , the disk-shaped rotor  506  is rotated in the rotational direction. As shown in  FIG. 14( b ) , the counterweight ball  515  in the ball swing box  511  is pressed against an arc-shaped wall surface of the outer edge portion  513  of the ball swing box  511  by the gravitational force and the centrifugal force at a right side of a disk-shaped rotor center vertical line  521  in the drawing. Then, when the disk-shaped rotor  506  is further rotated and the counterweight ball  515  enters a left side of the disk-shaped rotor center vertical line  521  in the drawing, as shown in  FIG. 14( c ) , the counterweight ball  515  is scooped up by the counter-weight ball receiving section  514  of the ball swing box  511  and rotated with the rotor  506 . In this way, in the rotating power amplifying apparatus of the fifth example, the counterweight ball  515  is moved along the trajectory of the counterweight ball shown in  FIG. 14( d ) . 
     As shown by the trajectory of the counterweight ball of  FIG. 14( d ) , the rotational moment exerted on the main shaft of the counterweight ball  515  is larger at a right side of the disk-shaped rotor center vertical line  521  in the drawing than at a left side in the drawing. Accordingly, in the rotating power amplifying apparatus according to the fifth example, as the revolving speed at which the gravitational force of the counterweight ball  515  effectively works is appropriately selected, rotation efficiency of the disk-shaped rotor  506  can be increased and rotating power of the disk-shaped rotor  506  can be largely amplified. 
     Sixth Example 
       FIG. 15( a )  is a view showing a rotating power amplifying apparatus  600  according to a sixth example when seen from above, and  FIG. 15( b )  is a view showing the rotating power amplifying apparatus  600  according to the sixth example when seen from a front side. 
     The rotating power amplifying apparatus  600  according to the sixth example includes a main shaft  603  serving as a rotating target, a balance weight  611  that is axially supported by the main shaft  603  and rotatable, a main shaft gear  607  axially supported by the main shaft  603  like the balance weight  611 , a subsidiary shaft gear  626  axially supported by a subsidiary shaft  625  and meshed with the main shaft gear  607  to transmit rotating power of the subsidiary shaft  625 , a spring case  631  and a spring case gear  632  that are axially supported by the subsidiary shaft  625  and rotatable about the subsidiary shaft  625 , and an Osmund spring  634  fixed to the subsidiary shaft  625  and the spring case gear  632 . The spring case  631  is intermittently rotated by a driving motor  651  via a drive transmission gear  628  and a speed adjustment gear  629 . 
     The rotating power amplifying apparatus  600  according to the sixth example amplifies rotating power, continuously generates electric power and improves power generation efficiency of electric power obtained by rotation using a configuration in which the Osmund spring  634  is wound and squeezed by falling power and rotating power of the balance weight  611  and rotating power of unwinding of the spring  634  is used as lifting power of the balance weight  611 . 
     The rotating power amplifying apparatus according to the sixth example will be further described below. 
     In the rotating power amplifying apparatus  600  according to the sixth example, the main shaft  603  serving as a central axis of the rotating body is horizontally installed at a frame  601  via a bearing. The balance weight  611 , a balance weight arm  612  and the main shaft gear  607  are axially supported by the main shaft  603 . The main shaft  603  is used to add starting torque to the apparatus of the example and extract shaft output. 
     The balance weight  611  is formed of a material having weight. In the example, the balance weight  611  is formed of, for example, iron. 
     The main shaft gear  607  is meshed with the subsidiary shaft gear  626  axially supported by the subsidiary shaft  625 . The subsidiary shaft  625  is horizontally installed at the frame  601  via a bearing b  622 . 
       FIG. 16  shows an attachment structure of the Osmund spring  634 . The Osmund spring  634  is received in the spring case  631 . A core section of the Osmund spring  634  is fixed to the subsidiary shaft  625 , and an outer circumferential end of the Osmund spring  634  is fixed to the spring case  631 . In addition, the spring case  631  and the spring case gear  632  are rotatably attached via a bearing  623  using the subsidiary shaft  625  as a central axis. 
     The spring case gear  632  is intermittently rotated by the driving motor  651  via the drive transmission gear  628  and the speed adjustment gear  629 . The driving motor  651  connects to a motor control box  661  via a wire. In addition, a rotation sensor  663  configured to detect rotation of the main shaft  603  also connects to the motor control box  661 . 
       FIGS. 17( a ) and 17( b )  show an operation principle of the rotating power amplifying apparatus according to the sixth example.  FIG. 17( a )  shows a state in which the spring case gear  632  is synchronized and rotated with the balance weight  611 , and  FIG. 17( b )  shows a state in which the spring case  631  is stopped and the Osmund spring  634  installed in the spring case  631  is wound and squeezed. 
     In the rotating power amplifying apparatus  600  according to the sixth example, a position of the balance weight  611  upon starting is preferably a position of the balance weight  611  shown in  FIG. 17( a )  in a state in which the spring case gear  632  is synchronized and rotated with the balance weight  611 . The spring case  631  preferably starts from a state in which the spring case  631  is wound by the driving motor  651  one to two turns and a repellent force is accumulated in the Osmund spring  634 . 
     In the rotating power amplifying apparatus  600  according to the sixth example, it is preferable to generate a wheel axis effect and reduce a load applied to the driving motor  651  using a relation of gear reference pitch diameters represented as the spring case gear  632 &gt;the subsidiary shaft gear  626 &gt;the main shaft gear  607 . 
     In the rotating power amplifying apparatus according to the sixth example, the driving motor is controlled in sequence of an acceleration zone, a constant speed zone and a deceleration zone while the balance weight is rotated a plurality of times, and further, rotation of the driving motor is stopped and electrical conduction is minimized at the same time. In the example shown in  FIGS. 15 to 18 , for example, the driving motor  651  is controlled in sequence of the acceleration zone, the constant speed zone and the deceleration zone while the balance weight  611  is rotated two turns. Then, continuously, at a third turn of the balance weight  611 , rotation of the driving motor  651  is stopped and electrical conduction is minimized at the same time. In the rotating power amplifying apparatus of the example, the driving motor  651  is operated by repeating the cycles. 
       FIG. 18  shows control of the motor and movement of the balance weight when a stepping motor is used as the driving motor  651 . Further, while the example in which the stepping motor is used as the driving motor  651  has been described here, the driving motor  651  may be, for example, a servo motor. 
     A state in which the spring case gear  632  is synchronized and rotated with the balance weight  611  as shown in  FIG. 17( a )  represents a constant speed zone  653  of movement of the motor and the balance weight as shown in  FIG. 18 . A spring case stoppage state shown in  FIG. 17( b )  represents a rotation stoppage/electric conduction minimum zone  655  of the motor and the balance weight shown in  FIG. 18 . 
     The rotation stoppage/electric conduction minimum zone  655  of the driving motor  651  is preferably synchronized with a section in which a rotational moment is maximally effective due to dropping of the balance weight  611 . 
     From a deceleration zone  654  to the rotation stoppage/electric conduction minimum zone  655  of the driving motor  651 , the Osmund spring  634  is wound and squeezed by a rotational speed difference. In a region in which the rotational moment caused by the balance weight  611  is against rotation of the main shaft, rotation of the balance weight  611  is promoted by a resultant force of a repellent force of the Osmund spring  634  and rotating power of the driving motor  651  in an acceleration zone  652 . 
     In addition, the rotation sensor  663  may be installed at a periphery of the main shaft  603 . Since the revolving speed of the balance weight  611  and the main shaft  603  and rotation of the spring case gear  632  are synchronized, rotation of the driving motor  651  can be controlled by a program incorporated in the motor control box  661 . 
     As described above, a winding/squeezing repellent force of the spring is used at the position at which the balance weight generates a rotational moment against the rotational direction. In addition, in the stoppage zone of the driving motor, due to synchronization with the section in which the rotational moment due to dropping of the balance weight  611  is large, the balance weight  611  can maintain the rotating power in a state in which there is no input from the driving motor  651 . Accordingly, in the rotating power amplifying apparatus of the example, since the balance weight can maintain the rotating power even in a state in which there is no input from the driving motor due to synchronization with the section in which the rotational moment is large during continuous rotation of the main shaft, more effective power generation efficiency can be achieved. 
     By arbitrarily combining the rotating power amplifying apparatuses according to the first to sixth examples, it is possible to obtain the rotating power amplifying apparatus capable of increasing rotation efficiency of the main rotating body and largely amplifying rotating power of the main rotating body. That is, it is possible to provide a rotating power amplifying apparatus capable of substantially continuously generating electric power and remarkably improving power generation efficiency of electric power obtained by rotation while applying little starting energy. 
     By providing the configuration of the rotating power amplifying apparatus according to the example, it is possible to obtain a rotary power generating apparatus capable of extracting rotating power from a main rotating body. 
     By providing the configuration of the rotating power amplifying apparatus according to the example, it is possible to obtain a generator capable of extracting output from a main rotating body and generating power.