JP2009005465A - Drive unit, dc motor and generator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a drive unit, a DC motor and a generator which are simple in constitution. <P>SOLUTION: The drive unit 9 comprises: a first shaft 2 and a second shaft 3 which are rotatably supported and have conductivity; a conductive belt 4 which rotates the first shaft 2 and the second shaft 3 by making them interlocked with each other; and permanent magnets 5, 6 which generate magnetic fields for making the conductive belt 4 generate electromagnetic operation. The drive unit 9 is characterized by comprising a single module 7 electrically and serially connected with the first shaft 2, the conductive belt 4 and the second shaft 3, and by forming a closed circuit of the single module 7. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a drive device, a DC motor, and a generator, and more particularly, to a drive device, a DC motor, and a generator that do not use a brushless semiconductor switch circuit or the like.

  Currently, there are two types of motors, one is a motor with a brush and the other is a brushless motor. The motor with a brush has an advantage that the structure is simple and the manufacturing cost is low because the brush and the commutator are in physical contact to control the voltage polarity. For this reason, there are still many demands, but there are many problems such as generation of electromagnetic noise, decrease in output and reliability due to brush wear, and generation of sparks. Various attempts have been made to overcome these problems. For example, a brush motor incorporating a noise prevention circuit has been proposed (see Patent Document 1), and the electric noise generated at the contact between the commutator and the brush is reduced by rotating the commutator and changing the current direction. There is an effect to make.

  However, in the motor with a brush, the brush and the commutator are in physical contact, so it is difficult to fundamentally solve the problems caused by this. On the other hand, instead of a brush, a brushless motor using a rotational position detecting element and a semiconductor switch circuit is commercially available. Since the voltage polarity of brushless motors is controlled by a switch circuit, problems due to brush wear have been eliminated, electromagnetic noise has been greatly reduced, and reliability has been improved, so the use of brushless motors has expanded. . According to Patent Document 2, a brushless motor has been proposed in which the configuration of the energization control means can be simplified as compared with the conventional configuration, and the replacement with a motor with a brush is easy.

Further, the generator can be realized by applying the operating principle of the motor, and the function of power generation can be obtained by rotating the commutator using an external power source.
Japanese Patent Laid-Open No. 7-135752 JP 2001-211685 A

  However, DC brushless motors must perform commutator position detection and accompanying polarity control in order to make the voltage polarity constant. Therefore, a rotational position detection element, a semiconductor switch circuit, etc. are required. However, there is a problem that has to be a complicated configuration. In short, a mechanism for converting direct current into alternating current is required.

  In view of the above problems, an object of the present invention is to provide a drive device, a DC motor, and a generator that can be simplified in configuration.

  In order to achieve the above-mentioned object, the invention according to claim 1 links the first shaft and the second shaft having electrical conductivity supported rotatably, and the first shaft and the second shaft. A power transmission body having electrical conductivity to be rotated and a magnetic field generating means for generating a magnetic field for generating an electromagnetic action in the power transmission body having electrical conductivity, the first shaft, and the power having electrical conductivity. A single module in which the transmission body and the second shaft are electrically connected in series is provided, and a closed circuit is formed by the single module.

  The invention according to claim 2 is characterized in that the power transmission body having conductivity is an endless conductive belt.

  According to a third aspect of the present invention, the magnetic field generating means is provided on a concentric circle of at least one of the first axis and the second axis, and the power transmission body having conductivity is the magnetic field. It is electrically connected to the generating means.

  The invention according to claim 4 is characterized in that the magnetic field generating means generates magnetic fields in opposite directions to each other on the first axis and the second axis.

  Further, in the invention according to claim 5, the magnetic field generating means generates magnetic fields in the same direction on the first axis and the second axis, and the conductive belt is connected to the first axis and the second axis. It is characterized by being crossed between the second shafts.

  According to a sixth aspect of the present invention, a plurality of the single modules are electrically connected in series, and the power transmission body having conductivity is interlocked with the first shaft and the second shaft. A rotating output shaft is provided, and the output shaft is mechanically connected in an axial direction to the output shaft of another adjacent single module.

  The invention according to claim 7 includes the drive device according to any one of claims 1 to 6 and is driven by a direct current supplied from a power source to the closed circuit.

  An invention according to an eighth aspect includes the drive device according to any one of the first to sixth aspects, and at least one of the first shaft and the second shaft by power supplied from a power supply unit. One of them is rotated to take out electric energy from the closed circuit.

  According to the drive device of the first aspect of the present invention, since the conductive belt can be rotated in a certain direction by the electromagnetic force generated by the magnetic field generated by the current and the magnetic field generated by the permanent magnet, no brush is required. Compared to the conventional case, the configuration can be simplified.

  In addition, according to the driving device of the second aspect, the contact area between the first shaft and the second shaft and the conductive belt increases, so that the stability and reliability of rotation can be improved.

  In addition, according to the drive device of the third aspect, the magnetic field generating means is provided on a concentric circle of at least one of the first shaft and the second shaft, thereby reducing the size of the drive device. Furthermore, the structure can be simplified by using a permanent magnet as the magnetic field generating means.

  According to the drive device of the fourth aspect, the rotational efficiency of the drive device can be further improved by generating the rotational force with the first shaft and the second shaft.

  Further, according to the driving device of the fifth aspect, it is not necessary to reverse the directions of the magnetic field of the first axis and the magnetic field of the second axis, and by applying a uniform magnetic field to the driving device. Since it can be operated, the structure can be further simplified, and the degree of freedom of installation of the magnetic field generating means can be improved, so that options for packages and layouts can be expanded.

  Further, according to the driving device of the sixth aspect, a larger output can be obtained by stacking a desired number of stages of single modules.

  Further, according to the DC motor of the seventh aspect, there is no need for a DC / AC conversion mechanism such as a commutator, a brush, or a switch circuit, and desired power can be obtained by a drive device having a simple structure.

  Further, according to the generator of the eighth aspect, there is no need for a DC / AC conversion mechanism such as a commutator, a brush, or a switch circuit, and desired electric energy can be obtained by a driving device having a simple structure.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
(1) First Embodiment First, the configuration of the first embodiment will be described.

  A DC motor 1 shown in FIG. 1 includes a first shaft 2, a second shaft 3, a conductive belt 4 as a power transmission body having electrical conductivity, and permanent magnets 5 and 6 as magnetic field generating means, The first shaft 2, the conductive belt 4, and the second shaft 3 are electrically connected in series to form a single module 7, and the single module 7 includes a driving device 9 that forms a closed circuit. The DC motor 1 is connected to a DC power source 10 as a power source in a closed circuit, and supplies a DC current from the first shaft 2 to the second shaft 3 via the conductive belt 4. In this way, the DC motor 1 moves the conductive belt 4 in a certain direction by generating an electromagnetic force due to the interaction between this current and the magnetic field generated by the permanent magnets 5 and 6, thereby obtaining a desired power. It is configured as follows.

  The 1st axis | shaft 2 and the 2nd axis | shaft 3 consist of a metal which has electroconductivity, are comprised by the cylindrical member, and are rotatably supported by the bearing 8, 8, 8, 8 at both ends. The first shaft 2 and the second shaft 3 are erected at a distance from each other by fixing the bearings 8 to the main body (not shown).

  The bearings 8,... Have a mortar-shaped receiver, and are configured to support both ends of the first shaft 2 and the second shaft 3 at substantially the center of the receiver, respectively. Yes.

  The first shaft 2 and the second shaft 3 are each integrally provided with permanent magnets 5 and 6 concentrically. The permanent magnets 5 and 6 have a cylindrical shape, and a metal film for providing conductivity is formed on the surface, and the first shaft 2 or the second shaft 3 is inserted in the center. Yes. The permanent magnets 5 and 6 are provided with an N pole at one end and an S pole at the other end so that the directions of the magnetic fields on the first shaft 2 and the second shaft 3 are opposite to each other. That is, the permanent magnet 5 provided on the first shaft 2 is installed with the north pole down and the south pole up so that the direction of the magnetic field is upward. Further, the permanent magnet 6 provided on the second shaft 3 is installed with the north pole facing up and the south pole facing down so that the direction of the magnetic field is downward.

  The conductive belt 4 is formed with an endless metal band like a ring, and a predetermined tension is applied between the first shaft 2 and the second shaft 3 from the outside of the permanent magnets 5 and 6. It is hung in the provided state.

  Thus, the drive device 9 includes the single module 7 in which the first shaft 2, the conductive belt 4, and the second shaft 3 are electrically connected in series. The driving device 9 is provided with a DC power source 10 in a closed circuit, and a DC circuit is configured so that a current flows from one end 2 a of the first shaft 2 to one end 3 a of the second shaft 3 via the conductive belt 4. Has been.

  Next, the operation and effect of the above embodiment will be described.

  A direct current flows from the direct current power source 10 into the one end 2 a of the first shaft 2 in the driving device 9 of the direct current motor 1. This current flows through the first shaft 2 and through the metal film provided on the surface of the permanent magnet 5 to the conductive belt 4. The current flowing into the conductive belt 4 flows out from the one end 3a of the second shaft 3 through the second shaft 3 through the metal film formed on the surface of the permanent magnet 6 provided on the second shaft 3. . In this way, the current flows from the first shaft 2 toward the second shaft 3 through the conductive belt 4.

  In the first shaft 2, a magnetic field from the N pole to the S pole, that is, a magnetic field from the bottom to the top (M1 direction in the figure) is generated by the permanent magnet 5. Further, when a current flows through the conductive belt 4, a magnetic field is generated in a clockwise direction with respect to the direction in which the current flows. The magnetic field of the permanent magnet 5 and the magnetic field generated by the current influence each other, and the electromagnetic belt acts on the conductive belt 4 hung on the first shaft 2 in the direction from the back to the front (arrow in the figure). F1 direction) electromagnetic force is generated.

  Similarly, on the second axis 3, a magnetic field directed from the N pole to the S pole by the permanent magnet 6, that is, a magnetic field moving from the top to the bottom in the opposite direction to the first axis 2 (M2 direction in the figure) is generated. . Further, when a current flows through the conductive belt 4, a magnetic field is generated in a clockwise direction with respect to the direction in which the current flows. The magnetic field of the permanent magnet 6 and the magnetic field generated by the current influence each other, and the electromagnetic belt acts on the conductive belt 4 hung on the second shaft 3 in the direction from the front to the back (arrow in the figure). F2 direction) electromagnetic force is generated.

  In this way, the conductive belt 4 moves in the direction of arrow A in the figure by the electromagnetic force generated on the first shaft 2 and the second shaft 3. Here, the conductive belt 4 is endless, and is hung on the permanent magnets 5 and 6 provided integrally with the first shaft 2 and the second shaft 3. The first shaft 2 and the second shaft 3 are interlocked and rotated in the same direction, that is, both the first shaft 2 and the second shaft 3 in the direction of the arrow B in the figure by the friction force generated therebetween.

  As described above, the conductive belt 4 according to the present embodiment generates an electromagnetic force by causing the magnetic field generated by the current flowing through the conductive belt 4 and the magnetic field generated by the permanent magnets 5 and 6 to interact with each other. Move in a predetermined direction. Thus, when the conductive belt 4 moves in a predetermined direction, the driving device 9 rotates the first shaft 2 and the second shaft 3.

  Incidentally, in a conventional DC motor, a commutator and a brush are required to keep the power transmission body having electric conductivity through which current flows continuously rotating in a certain direction. However, in the drive device 9 according to the present embodiment, the conductive belt 4 can be rotated in a certain direction by the electromagnetic force generated by the magnetic field generated by the current and the magnetic field generated by the permanent magnets 5 and 6. A brush is not required, and the configuration can be greatly simplified as compared with the prior art. In this way, by rotating the first shaft 2 and the second shaft 3 by the drive device 9, the DC motor 1 according to the present embodiment can obtain desired power. Therefore, in the DC motor 1 according to the present embodiment, since a commutator and a brush are not required, durability can be improved.

  Further, in the DC motor 1 according to this embodiment, the permanent magnets 5 and 6 as magnetic field generating means are provided concentrically with the first shaft 2 and the second shaft 3. In this way, the first shaft 2 and the second shaft 3 and the permanent magnets 5 and 6 are configured integrally, thereby simplifying the configuration and changing the direction of the magnetic field by an external magnetic field generating means for each axis. There is no need to control, and the drive device 9 can be downsized.

  The permanent magnets 5 and 6 have a cylindrical shape, and a metal film is formed on the surface, and the conductive belt 4 is hung on the surfaces of the permanent magnets 5 and 6. Thereby, since the drive device 9 can arrange | position the electrically conductive belt 4 in the center of the magnetic field produced by the permanent magnets 5 and 6, the electrically conductive belt 4 is generated by the magnetic field of the permanent magnets 5 and 6 and the magnetic field generated by the current. In contrast, the electromagnetic force can be generated in a well-balanced manner. Therefore, the DC motor provided with the driving device 9 can efficiently obtain desired power.

  Further, the driving device 9 constituted a closed circuit by the first shaft 2, the second shaft 3 and the conductive belt 4 supported by the bearings 8,. That is, the configuration can be simplified by using the first shaft 2 and the second shaft 3 as means for supplying current to the conductive belt 4.

Moreover, the drive device 9 according to the present embodiment uses the conductive belt 4 as a power transmission body having conductivity. Thereby, by using a wide belt as a power transmission body having electrical conductivity, the contact area with the permanent magnets 5 and 6 can be increased, and the stability and reliability of rotation can be improved.
(2) Second Embodiment Next, a DC motor 20 according to a second embodiment of the present invention will be described with reference to FIG. In addition, the same code | symbol is attached | subjected about the structure similar to the above-mentioned structure, and description is abbreviate | omitted for simplicity.

  A DC motor 20 shown in FIG. 2 includes a first shaft 2, a second shaft 3, a conductive belt 21 as a power transmission body having conductivity, and permanent magnets 5 and 5 as magnetic field generating means. A single module 22 in which the first shaft 2, the conductive belt 21 and the second shaft 3 are electrically connected in series is provided, and a driving device 23 in which a closed circuit is formed by the single module 22 is provided.

  As in the DC motor 1 shown in FIG. 1, the first shaft 2 and the second shaft 3 are made of a cylindrical metal having conductivity, and both ends thereof are rotatably supported by bearings 8. Has been.

  In the direct current motor 1 described above, the magnetic fields of the permanent magnets 5 and 6 provided on the first shaft 2 and the second shaft 3 are opposite to each other. It is characterized in that the magnetic fields of the permanent magnets 5 and 5 provided on the second axis are installed in the same direction.

  The conductive belt 21 is hung around the first shaft 2 and the second shaft 3 so as to cross the vicinity of the center between the first shaft 2 and the second shaft 3 so as to draw a figure 8. Yes. The conductive belt 21 is formed in an endless shape, and the conductive belt 21 fed from the front of the first shaft 2 is hung on the second shaft 3 from the back of the second shaft 3, and the second The conductive belt 21 fed from the front of the shaft 3 is hung on the first shaft 2 from the back of the first shaft 2. The conductive belt 21 intersects in the vicinity of the center between the first shaft 2 and the second shaft 3. The conductive belt 21 is suspended from the outside of the permanent magnets 5 and 5 between the first shaft 2 and the second shaft 3 with a predetermined tension.

  Thus, the drive device 23 includes the single module 22 in which the first shaft 2, the conductive belt 21, and the second shaft 3 are electrically connected in series. The driving device 23 is provided with a DC power supply 10 in a closed circuit, and a DC circuit is configured so that a current flows from one end 2a of the first shaft 2 to one end 3a of the second shaft 3 via the conductive belt 21. Has been.

  Next, the operation and effect of the above embodiment will be described.

  In the DC motor driving device 9, a current flows in the DC circuit from one end 2 a of the first shaft 2 to one end 3 a of the second shaft 3.

  In the first axis 2 and the second axis 3, an upward magnetic field is generated on both axes by the permanent magnets 5 and 5 (direction M1 in the figure). In addition, the conductive belt is hung on the first shaft 2 side by an electromagnetic action that is an interaction between a magnetic field generated by a current flowing through the conductive belt 21 and a magnetic field generated by the permanent magnets 5 and 5. An electromagnetic force in a direction perpendicular to the outer surface of the belt (in the direction of arrow F3 in the figure) is generated in the portion 21a, and a portion perpendicular to the outer surface of the belt in the portion 21b hung on the second shaft 3 (see FIG. An electromagnetic force in the direction of the middle arrow F4 is generated.

  A force in the same direction is generated in the first shaft 2 side and the second shaft 3 side portion of the conductive belt 21, but since the conductive belt 21 is crossed, the force in the same direction is applied to the conductive belt 21. 21 is moved in the direction of arrow A in the figure. Here, the conductive belt 21 is endless, and is hung on the permanent magnets 5 and 5 provided integrally with the first shaft 2 and the second shaft 3. Due to the friction force generated between them, the first shaft 2 and the second shaft 3 are interlocked in the opposite direction, that is, the first shaft 2 is in the direction of the arrow B1 in the drawing, and the second shaft 3 is the arrow B2 in the drawing. Rotate in the direction.

  As described above, the conductive belt 21 according to the present embodiment generates an electromagnetic force by causing the magnetic field generated by the current flowing through the conductive belt 21 and the magnetic field generated by the permanent magnets 5 and 5 to interact with each other. The conductive belt 21 moves in a predetermined direction. Thus, when the conductive belt 21 moves in a predetermined direction, the driving device 23 rotates the first shaft 2 and the second shaft 3 in the B1 direction and the B2 direction, respectively.

  Incidentally, by adopting such a configuration, when the distance between the first shaft 2 and the second shaft 3 is shortened, interference between magnetic fields generated by the permanent magnets 5 and 5 can be suppressed.

Also in this embodiment, since the DC motor 20 includes the driving device 23 having the single module 22, the same effects as those of the above-described embodiment can be obtained.
(3) Third Embodiment Next, a DC motor 30 according to a third embodiment of the present invention will be described with reference to FIG. In addition, the same code | symbol is attached | subjected about the structure similar to the above-mentioned structure, and description is abbreviate | omitted for simplicity.

  A DC motor 30 shown in FIG. 3 includes a first shaft 31, a second shaft 32, a third shaft 33 as an output shaft, a rotating disk 34 as a power transmission body having conductivity, and magnetic field generating means. Permanent magnets 5 and 6. A driving device 36 is provided in which a closed circuit is configured by electrically connecting the first shaft 31, the rotating disk 34, and the second shaft 32 in series. The driving device 36 includes a plurality of single modules 35 (t). Here, t is 1 to n. The single module 35 (t) includes a first shaft 31 (t), a second shaft 32 (t), a third shaft 33 (t) as an output shaft, and rotation as a power transmission body having conductivity. A board 34 (t) and permanent magnets 5 and 6 as magnetic field generating means are provided.

  When a direct current is supplied from the direct current power source 10, the direct current motor 30 is connected to the second shaft through the turntable 34 (1) from the first shaft 31 (1) of the first stage single module 35 (1). The current flows to the shaft 32 (1) of the second stage, and the second shaft 32 (2) of the second stage single module 35 (2) passes through the turntable 34 (2) to the first shaft 31 (2). Current flows. In this way, current flows in series from the first stage single module 35 (1) to the last stage single module 35 (n) one after another. Due to the electromagnetic action of the magnetic field generated by the current flowing through the rotating disks 34 (1) to 34 (n) of each stage and the magnetic field created by the permanent magnets 5 and 6, the rotating disks 34 (1) to 34 ( An electromagnetic force is generated in n), and the rotating disks 34 (1) to 34 (n) of each stage are rotated in a certain direction. Thereby, it is comprised so that desired motive power may be obtained.

  The first shaft 31 and the second shaft 32 are integrally provided with permanent magnets 5 and 6 concentrically according to each step. The permanent magnets 5 and 6 at each stage are installed such that the directions of the magnetic fields on the first shaft 31 and the second shaft 32 are opposite to each other. For example, in the first stage single module 35 (1), the permanent magnet 6 of the first shaft 31 (1) has a downward magnetic field, and the permanent magnet 5 of the second shaft 32 (1) has an upward magnetic field. . On the other hand, in the second stage single module 35 (2), the permanent magnet 5 of the first shaft 31 (2) is an upward magnetic field, and the permanent magnet 6 of the second shaft 32 (2) is a downward magnetic field. Install to be. With such a configuration, the permanent magnets 5 and 6 are provided in directions opposite to each other on the first axis and the second axis in each stage. Moreover, the permanent magnets 5 and 6 are provided in mutually opposite directions between adjacent single modules in the first axis. Similarly, the permanent magnets 5 and 6 are provided in directions opposite to each other between adjacent single modules in the second axis.

  The turntable 34 is made of metal and formed in a cylindrical shape, and is installed between the first shaft 31 and the second shaft 32 so as to be in contact with the permanent magnets 5 and 6 of each stage. Three shafts 33 are formed through the center of the rotating disk 34.

  In the first stage single module 35 (1), the first shaft 31 (1) has one end 31 (1) a having conductivity and rotatably supported by the bearing 8, and the other end 31 (1). b has insulation and is connected to the first shaft 31 (2) in the second stage single module 35 (2). On the other hand, the second shaft 32 (1) has one end 32 (1) a having insulation and is rotatably supported by the bearing 8, and the other end 32 (1) b having conductivity, Are connected to the second shaft 32 (2) of the single module 35 (2).

  In the second stage single module 35 (2), the first shaft 31 (2) has the first end 31 (2) a having an insulating property, and the first shaft 31 (2) The other end 31 (1) b of the shaft 31 (1) is connected to the other end 31 (2) b, and the other end 31 (2) b is electrically conductive and has one end of the first shaft in a third stage single module (not shown). It is connected with. On the other hand, the second shaft 32 (2) has one end 32 (2) a having conductivity, and the other end 32 (1) of the second shaft 32 (1) in the first stage single module 35 (1). ) b, and the other end 32 (2) b is insulative and connected to one end of the second shaft in the third stage single module (not shown).

  With such a configuration of the single module 35, in the single module 35, each axis is made of a part having conductivity and insulation, and if one end on the first axis 31 side is conductive, the second axis One end on the 32 side is insulative, and in this case, the other end on the first shaft 31 side is insulative and the other end on the second shaft 32 side is conductive. On the other hand, if one end on the first shaft 31 side is insulative, one end on the second shaft 32 side becomes conductive. In this case, the other end on the first shaft 31 side is conductive, The other end on the shaft 32 side is insulative. Therefore, the drive device 36 has a configuration in which such single modules 35 are repeatedly connected and provided in a plurality of stages (n stages).

  Further, in the n-th single module 35 (n) which is the final stage, the first shaft 31 (n) has one end 31 (n) a having an insulating property, and the n-1th single module. 35 (n-1) is connected to the other end 31 (n-1) b of the first shaft 31 (n-1), and the other end 31 (n) b has conductivity and is rotated by the bearing 8. It is supported freely. On the other hand, the second shaft 32 (n) has one end 32 (n) a having conductivity, and the second shaft 32 (n−1) in the n−1th single module 35 (n−1). ) Is connected to the other end 32 (n-1) b, and the other end 32 (n) b has an insulating property and is rotatably supported by the bearing 8.

  And the 3rd axis | shaft 33 in each single module 35 (1) -35 (n) is connected with the 3rd axis | shaft 33 of the other adjacent single module 35, and all the turntables 34 (1)- 34 (n) is configured to rotate in conjunction with each other.

  In this manner, the driving device 36 includes the one end 31 (1) a of the first shaft 31 (1), the rotating disk 34 (1), and the second shaft 32 (1) in the first stage single module 35 (1). 1) from the other end 32 (1) b of the second stage 32 (2) in the second-stage single module 35 (2), the one end 32 (2) a of the second shaft 32 (2), the turntable 34 (2) and the first The direct current circuit is configured so that current flows with another adjacent single module 35 such as the other end 31 (2) b of the shaft 31 (2).

  Here, when the single module 35 is connected, for example, in the first-stage single module 35 (1), the first shaft 31 (1), the second shaft 32 (1), the third shaft For the shaft 33 (1), one end 31 (1) a, 32 (1) a, 33 (1) a and the other end 31 (1) b, 32 (1) b, 33 (1) b of each shaft Are described as being connected to each other, but may be configured as a single member.

  Next, the operation and effect of the above embodiment will be described.

  In the driving device 36 of the DC motor 30, a DC current flows from the DC power source 10 into the first single module 35 (1) at one end 31 (1) a of the first shaft 31 (1). This current flows through the metal film provided on the surface of the permanent magnet 6 through the one end 31 (1) a of the first shaft 31 (1) to the rotating disk 34 (1). Incidentally, the other end 31 (1) b of the first shaft 31 (1) is directly insulated from the other end 31 (1) b of the first shaft 31 (1) because of insulation. No current flows into module 35 (2). The current flowing into the turntable 34 (1) passes through the metal film formed on the surface of the permanent magnet 5 provided on the second shaft 32 (1), and the other end 32 of the second shaft 32 (1). (1) After passing through b, the second stage single module 35 (2) flows into the second stage single module 35 (2) from one end 32 (2) a of the second shaft 32 (2).

  In the second stage single module 35 (2), the current flowing from one end 32 (2) a of the second shaft 32 (2) is the metal on the surface of the permanent magnet 6 of the second shaft 32 (2). The film flows through the rotating disk 34 (2) and flows into the metal film on the surface of the permanent magnet 5 of the first shaft 31 (2). Again, like the first shaft 31 (1) in the first-stage single module 35 (1), the other end 32 (2) b of the second shaft 32 (2) is insulative, so No current flows directly from the shaft 32 (2) into the third stage single module (not shown).

  In this way, the first-stage single module 35 (1) moves in the direction of the arrow D1 (the direction from the first axis 31 (1) to the second axis 32 (1)) in the figure. In one module 35 (2), in the direction of arrow D2 (the direction of the second axis 32 (2) to the first axis 31 (2)), the direction of current flow alternates between the D1 direction and the D2 direction. It will flow repeatedly.

  In the first stage single module 35 (1), the downward magnetic field generated by the permanent magnet 6 of the first shaft 31 (1) and the magnetic field generated by the current flowing into the rotating disk 34 (1) have an electromagnetic effect. As a result, in the vicinity where the permanent magnet 6 of the first shaft 31 (1) is in contact with the rotating disk 34 (1), a force in the direction from the front to the back (arrow F2 in the figure) is generated, and the second shaft In the vicinity where the 32 (1) permanent magnet 5 and the turntable 34 (1) are in contact, a force in the direction from the back to the front (arrow F1 in the figure) is generated. Therefore, the first stage single module 35 (1) rotating disk 34 (1) rotates in the direction A in the figure.

  In the second stage single module 35 (2), the downward magnetic field generated by the permanent magnet 6 of the second shaft 32 (2) and the magnetic field generated by the current flowing into the rotating disk 34 (2) have an electromagnetic effect. As a result, in the vicinity where the permanent magnet 6 of the second shaft 32 (2) is in contact with the rotating disk 34 (2), a force in the direction from the back to the front (arrow F1 in the figure) is generated, and the first shaft In the vicinity where the permanent magnet 5 of 31 (2) and the rotating disk 34 (2) are in contact with each other, a force (arrow F2 in the figure) in the direction from the front to the back is generated. Therefore, the turntable 34 (2) of the second stage single module 35 (2) also rotates in the direction A in the figure.

  The single module 35 in the third and subsequent stages also has a configuration in which the configuration of the single module 35 (1) in the first stage and the single module 35 (2) in the second stage are alternately repeated. The boards 34 (1) to 34 (n) rotate in the A direction.

  In this way, the rotating disks 34 (1) to 34 (n) of each stage rotate in the same direction A by the electromagnetic force generated by the interaction between the magnetic field due to the current and the magnetic field due to the permanent magnets 5 and 6. The rotating disk 34, the first shaft 31 and the second shaft 32 are also rotated in the B direction in conjunction with the friction force generated between the rotating disk 34 and the permanent magnets 5 and 6 provided at the respective stages of both shafts. To do.

  Furthermore, the third shaft 33 that is an output shaft through which the rotary disk 34 of each single module 35 is inserted is connected, so that the driving force generated by each single module 35 is combined and output from one place. it can. By adopting such a configuration, it is possible to obtain a large driving force by connecting a plurality of single modules 35 even with a large driving force that is impossible in the first embodiment which is the DC motor 1 of the single module 7. It becomes.

Also in this embodiment, since the DC motor 30 includes the driving device 36 having the single module 35, the same effect as the above-described embodiment can be obtained.
(4) 4th Embodiment Next, the generator 40 which concerns on 4th Embodiment of this invention is demonstrated with reference to FIG. In addition, the same code | symbol is attached | subjected about the structure similar to the above-mentioned structure, and description is abbreviate | omitted for simplicity.

  A generator 40 shown in FIG. 4 includes a first shaft 2, a second shaft 3, a conductive belt 4 as a power transmission body having electrical conductivity, and permanent magnets 5 and 6 as magnetic field generating means, A single module 44 in which the first shaft 2, the conductive belt 4, and the second shaft 3 are electrically connected in series is provided, and a driving device 45 in which a closed circuit is formed by the single module 44 is provided. The power source 41 is connected to the first shaft 2 via the power transmission means 42. The generator 40 is generated by rotating the first shaft 2 in a certain direction by the power supplied from the power source 41 and moving the conductive belt 4 in the magnetic field by the permanent magnets 5 and 6 by the rotation. A current as electrical energy is obtained from an output terminal 43 provided in the closed circuit.

  The power source 41 according to the present embodiment is an internal combustion engine, and the power generated from the power source 41 is transmitted to the first shaft 2 via a power transmission means 42, for example, a gear. Rotate 2

  As described above, the present embodiment is configured to rotate the first shaft 2 by the power source 41 and the power transmission means 42.

  In the present embodiment, the configuration in which the first shaft 2 is rotated by the power source 41 and the power transmission means 42 has been described. However, even if the second shaft 3 is rotated, the first shaft 2 and the first shaft 2 are rotated. Two shafts 3 may be rotated.

  Next, the operation and effect of the above embodiment will be described.

  The power generated by the power source 41 becomes a force for rotating the first shaft 2 by the power transmission means 42 and becomes the power for the driving device 45 of the generator 40. The first shaft 2 is rotated in the direction B in the figure by this power. Due to the rotation of the first shaft 2, the conductive belt 4 also rotates in conjunction with the frictional force between the permanent magnet 5 provided on the first shaft 2 and the conductive belt 4. As a result, the second shaft 3 also rotates in conjunction with it.

  In this way, the conductive belt 4 moves in the direction of arrow A in the figure. Here, since the conductive belt 4 moves in the direction of the arrow A in the upward magnetic field created by the permanent magnet 5 of the first shaft 2, an induced electromotive force is generated by the electromagnetic action, and the first shaft 2 starts to A current flows in the closed circuit in the direction of the axis 3 of 2.

  As described above, the conductive belt 4 according to this embodiment has a predetermined direction in the magnetic field generated by the permanent magnets 5 and 6 of the first shaft 2 and the second shaft 3 by the rotation of the first shaft 2. By moving to, an induced electromotive force is generated, and the generator can extract a current from the output terminal 43 in the closed circuit.

  Incidentally, in a conventional generator, a commutator and a brush are required to extract a current generated by rotating a power transmission body having conductivity in a magnetic field in a certain direction. However, in the driving device 45 according to the present embodiment, since the current can be taken out by moving the conductive belt 4 in a certain direction in the magnetic field generated by the permanent magnets 5 and 6, a commutator and a brush are required. In addition, the configuration can be greatly simplified as compared with the prior art. In this manner, the generator 40 according to the present embodiment can obtain desired electrical energy by rotating the first shaft 2 by the driving device 45 and interlocking the second shaft 3. Therefore, the generator 40 according to the present embodiment does not require a commutator and a brush, so that durability can be improved.

  Further, in the generator 40 according to the present embodiment, the permanent magnets 5 and 6 as magnetic field generating means are provided concentrically with the first shaft 2 and the second shaft 3. Thus, by comprising the 1st axis | shaft 2 and the 2nd axis | shaft 3, and the permanent magnets 5 and 6 integrally, a structure can be simplified and a drive device can be reduced in size.

  The permanent magnets 5 and 6 have a cylindrical shape, and a metal film is formed on the surface, and the conductive belt 4 is hung on the surfaces of the permanent magnets 5 and 6. Thereby, since the drive device 45 can arrange | position the electrically conductive belt 4 in the center of the magnetic field produced from the permanent magnets 5 and 6, the electrically conductive belt 4 can move efficiently in the magnetic field of the permanent magnets 5 and 6, and efficiency. It can generate electricity well. Therefore, the generator 40 provided with the driving device 45 can efficiently obtain desired electric energy.

  Further, the driving device 45 constituted a closed circuit by the first shaft 2 and the second shaft 3 supported by the bearing 8 and the conductive belt 4. By using the first shaft 2 and the second shaft 3 as current acquisition means for taking out current from the output terminal 43, the configuration can be simplified.

  The drive device 45 according to the present embodiment uses the conductive belt 4 as a power transmission body having conductivity. As a result, the contact area with the permanent magnets 5 and 6 increases, so that the stability and reliability of rotation can be improved.

  The present invention is not limited to this embodiment, and various modifications can be made within the scope of the gist of the present invention. For example, in the above-described embodiment, the case where a permanent magnet is used as the magnetic field generating means has been described. However, the present invention is not limited to this, and an electromagnet or the like may be used.

  Further, in the above-described embodiment, the case where the conductive belt uses a metal belt as the power transmission body having conductivity has been described, but the present invention is not limited thereto, and conductive rubber containing carbon or the like is used. It may be used.

  Further, in the above-described embodiment, the bearing has a receiver formed in a mortar shape, and is configured to support both ends of the first shaft and the second shaft at substantially the center of the receiver. Although the case has been described, the present invention is not limited to this, and a ball bearing may be used. This eliminates the need to sharpen the tip of the shaft, thereby reducing the resistance to current.

  In the above-described embodiment, the case where the permanent magnets are provided on both the first axis and the second axis has been described. However, the present invention is not limited to this, and the first axis and the second axis are not limited thereto. It is good also as providing a permanent magnet only in any one.

  In the above-described embodiment, the case where the first axis and the second axis are made of conductive metal has been described. However, the present invention is not limited to this, and an insulator having a metal film formed on the surface thereof. You may comprise. This opens up options for the shaft material, for example, materials that are low in conductivity but high in strength and light can be used.

  In the above embodiment, the case where the power source is constituted by an internal combustion engine has been described. However, the present invention is not limited to this, and the steam turbine is rotated by generating steam such as human energy, natural energy such as wind power, or thermal power. It may be a thing.

  Moreover, although the said embodiment demonstrated what comprised the power transmission means with the gear, this invention is not restricted to this, The power or energy supplied from a power source is converted into rotation of a 1st axis | shaft. Therefore, a belt may be used.

  Of course, the configuration of the single module of the second and third embodiments may be applied to the generator of the fourth embodiment.

It is a mimetic diagram showing composition of a direct-current motor concerning a 1st embodiment of the present invention. It is a schematic diagram which shows the structure of the DC motor which concerns on 2nd Embodiment of this invention. It is a schematic diagram which shows the structure of the DC motor which concerns on 3rd Embodiment of this invention. It is a schematic diagram which shows the structure of the generator which concerns on 4th Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 DC motor 2 1st axis | shaft 3 2nd axis | shaft 4 Electric conduction belt (Power transmission body which has electroconductivity)
5 Permanent magnet (magnetic field generating means)
6 Permanent magnet (magnetic field generating means)
7 Single Module 8 Bearing 9 Drive Device 10 DC Power Supply 20 DC Motor 21 Conductive Belt (Power Transmitter with Conductivity)
22 Single Module 23 Drive Device 30 DC Motor 31 First Axis 32 Second Axis 33 Third Axis 34 Turntable (Power Transmitter with Conductivity)
35 Single module 35 (1) to 35 (n) First-stage single module to n-th single module 36 Drive unit 40 Generator 41 Power source 42 Power transmission means 44 Single module 45 Drive unit

Claims (8)

A first shaft and a second shaft having electrical conductivity supported rotatably;
A power transmission body having electrical conductivity for rotating the first shaft and the second shaft in conjunction with each other;
Magnetic field generating means for generating a magnetic field for generating an electromagnetic action in the power transmission body having electrical conductivity,
A single module in which the first shaft, the conductive power transmission body and the second shaft are electrically connected in series;
A driving device characterized in that a closed circuit is formed by the single module.   The drive device according to claim 1, wherein the conductive power transmission body is an endless conductive belt.   The magnetic field generation means is provided on a concentric circle of at least one of the first axis and the second axis, and the conductive power transmission body is electrically connected to the magnetic field generation means. The drive device according to claim 1, wherein the drive device is provided.   The driving device according to claim 1, wherein the magnetic field generation unit generates magnetic fields in opposite directions to each other on the first axis and the second axis.   The magnetic field generating means generates a magnetic field in the same direction on the first axis and the second axis, and the conductive belt crosses between the first axis and the second axis. The drive device according to claim 2, wherein the drive device is mounted. A plurality of the single modules are electrically connected in series,
The power transmission body having electrical conductivity includes an output shaft that rotates in conjunction with the first shaft and the second shaft,
The drive device according to claim 1, wherein the output shaft is mechanically connected to the output shaft of another adjacent single module in the axial direction. A drive device according to any one of claims 1 to 6,
A direct current motor driven by a direct current supplied from a power source to the closed circuit. A drive device according to any one of claims 1 to 6,
Rotate at least one of the first shaft and the second shaft with the power supplied from the power supply means;
An electrical generator that extracts electrical energy from the closed circuit.

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