JP2000152602A - Electromagnetic rotating machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a DC motor and a DC generator, from which commutators, brushes and position detectors are eliminated. SOLUTION: This machine is constituted such that first and second armature coils 2a and 3a are fixed to an outer housing 8 so as to face the outer circumferential surfaces of first and second rotors 1a and 1b which have N-poles and S-poles on the outer circumferential surfaces, and if DC currents are applied to the first and second armature coils 2a and 3a to drive the first and second rotors 1a and 1b, the machine is used as a DC motor, if the first and second rotors 1a and 1b are driven and rotated to generate induced DC outputs in the first and second armature coils 2a and 3a, and the machine is used as a generator.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention can be used as a DC motor or DC generator.

[0002]

2. Description of the Related Art DC motors and DC generators are well known, but since the history of the technology is over 100 years, it is considered impossible to simplify the configuration.

[0003]

It is a first object to eliminate a position detecting device such as a brush in order to simplify the structure. A second problem is to remove the output ripple torque and ripple voltage.

[0004]

A first and second rotor made of a disk-shaped magnetic material, a cylindrical magnetic material rotor sandwiched between the first and second rotors, The rotation shafts provided through the central portions so as to rotate the first and second rotors and the columnar magnetic rotor synchronously, and the outer peripheral portions of the first and second rotors are respectively N and S. Means for magnetizing and holding the poles, an outer housing having a cylindrical inner surface, first and second side plates provided on both sides thereof, and a rotatably supported by a bearing provided at the center of the side plate. A rotating shaft, means for holding the outer peripheral rotating surfaces of the first and second rotors so as to face the inner peripheral surface of the outer casing via a gap of a set distance, Annular first and second fixed armatures fixed to the inside of the outer casing so as to face the outer surface of the second rotor, and a predetermined distance between the annular axis of the fixed armature The first and second armature coils mounted respectively, and the shafts mounted so as to magnetically close the gaps between the respective axes of the separated portion of the first armature coil and the separated portion of the second armature coil. When power is supplied to a generator or each armature coil derived by adding the generated voltage induced in each armature coil by the rotation of the core and the first and second rotors, the first and second motors are energized. Of the DC motor that generates a unidirectional output torque on the rotor.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the present invention will be described with reference to FIG. The same reference numerals in the drawings denote the same members, and a duplicate description will be omitted. FIG. 2 is a sectional view, and FIG. 1 is a plan view of FIG. In FIG. 2, a rotating shaft 5 is rotatably supported by bearings 5a and 5b provided on an outer casing 8 (shown by dotted lines) and drives a load 6 shown by dotted lines 6. The rotors (disks) 1a, 1b, 1c are fixed to the rotating shaft 5, and are made of soft ferrite or a sintered body of silicon steel.

[0006] As shown in FIG.
When magnetized to the poles, the outer circumferences of the rotors 1a and 1b, which are magnetic paths, are magnetized to N and S poles as shown. The magnetic path is closed by the mild steel temporary 4, 4a as described later. Even if the exciting coils 8a, 8b are supplied with direct current as the disk-shaped mild steel plates 1a, 1b, 1c, the soft steel plates 1a, 1b, 1c are magnetized as shown in FIG. Although not shown, the exciting coils 8a and 8b are fixed to the mild steel plate 4a.
The mild steel plate indicated by the symbols 4 and 4a has a portion 4a fixed to the outer casing 8.

[0007] The mild steel plate indicated by the symbol 4b is also the mild steel plate 4a.
It has the same configuration as. Symbols 2a, 2b, ..., 3a,
3b,..., Members denoted by symbols 4a, 4b,.
1b, the armature coils 2a, 2b
, and armature coils 3a, 3b, ... are wound to form a fixed armature. FIG. 3 shows the magnetic paths of the magnetic flux of the rotors 1a and 1b as curves 7a and 7b. As shown, the magnetic fluxes 7a and 7b pass only through the lower side of the armature coil and do not pass through the upper coil portion. Therefore, when the armature coil is energized, the driving force for driving the rotors 1a and 1b is generated only by the current in the lower portion of the armature coil and the magnetic flux of the rotors 1a and 1b. This point is the characteristic of the torque generation and the generation of the generated power of the device of the present invention.

With the above configuration, there is no torque ripple in the output torque and no ripple voltage of the generated power, and there is no need for a means for switching the current as in a known brushless motor. Therefore, the configuration is simplified, and there is no abrasion portion, so that there is no generation of noise, which is an effective means. Armature coils 3a,
.. and the armature coils 2a, 2b,... May be connected in series or in parallel.

When the rotors 1a, 1b are rotated with the load 6 as a drive source, induction outputs are generated in the armature coils 2a, 2b,... And the armature coils 3a, 3b,. . This DC output has no ripple voltage,
Since a rectifier using a diode is not required, an effective means can be obtained.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS When a prototype having the size shown in FIG. 2 is manufactured as a prototype, the output torque increases in proportion to the supplied current and the same performance as a known DC motor can be obtained. Since there is no position detecting device, the cost is correspondingly reduced, the configuration is simplified, and mass productivity is improved.

[0011]

According to the present invention, the structure is simplified and mass productivity can be obtained.
This is an effective means because there is no ripple voltage or ripple torque. Since an electromagnet can be used without using a magnet as a rotor, this is an effective means when producing a high-output one.

[Brief description of the drawings]

FIG. 1 is a plan view of the device of the present invention as viewed from the outer periphery.

FIG. 2 is a cross-sectional view of the device of the present invention.

FIG. 3 is an explanatory diagram of a magnetic circuit and lines of magnetic force.

[Explanation of symbols]

 1a, 1b, 1c Magnet rotors 2a, 2b,... 3a, 3b,.

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[Procedure amendment]

[Submission date] March 12, 1999 (1999.3.1.
2)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0007

[Correction method] Change

[Correction contents]

[0007] The mild steel plate indicated by the symbol 4b is also the mild steel plate 4a.
It has the same configuration as. Symbols 2a, 2b, ..., 3a,
3b,..., Members denoted by symbols 4a, 4b,.
1b, the armature coils 2a, 2b
, and armature coils 3a, 3b,... are wound to form a fixed armature. FIG. 3 shows the magnetic paths of the magnetic flux of the rotors 1a and 1b as curves 7a and 7b. As shown, the magnetic fluxes 7a and 7b pass only through the lower side of the armature coil and do not pass through the upper coil portion. Therefore, when the armature coil is energized, the driving force for driving the rotors 1a and 1b is generated only by the current in the lower portion of the armature coil and the magnetic flux of the rotors 1a and 1b. When the amount of magnetic flux of the rotors 1a and 1b is large,
The mild steel plate 4 serving as a magnetic path is magnetically saturated, and the magnetic flux is
Not only the lower side but also the upper side of the files 2a and 3a.
Therefore, a counter torque is generated to drive the rotors 1a and 1b.
The torque is reduced and disappears. Remove this disadvantage
To remove, all of the magnetic lines of force of the rotors 1a and 1b must be mild steel.
Of the mild steel sheet so that the plate 4 passes through the curves indicated by the curves 7a and 7b.
It is necessary to increase the cross-sectional area.

Claims (1)

[Claims] A first rotor made of a disk-shaped magnetic material; a cylindrical magnetic rotor sandwiched between the first and second rotors; The second rotor and the columnar magnetic rotor are synchronously rotated, and the rotating shaft provided through the center portion and the outer peripheral portions of the first and second rotors are magnetized into N and S poles, respectively. Means for holding and holding, an outer casing having a cylindrical inner surface, first and second side plates provided on both sides thereof, and the above-mentioned rotating shaft rotatably supported by a bearing provided at the center of the side plate. Means for holding the outer peripheral rotating surfaces of the first and second rotors so as to face the inner peripheral surface of the outer casing via a gap of a set distance,
Toroidal first and second fixed armatures fixed to the inner side of the outer casing such that both side portions face the outer surfaces of the first and second rotors, respectively, and toroidal axis centers of the fixed armatures Are magnetically closed between the respective first and second armature coils mounted at a predetermined distance from each other, and between the respective axis centers of the separated portion of the first armature coil and the separated portion of the second armature coil. When the generator or each armature coil is energized by adding the generated shaft voltage and the generated voltage induced in each armature coil by the rotation of the first and second rotors, , The first
An electromagnetic rotating machine configured as any one of a DC motor that generates a unidirectional output torque to a second rotor.