WO2017022021A1 - 回転電機の回転子 - Google Patents
回転電機の回転子 Download PDFInfo
- Publication number
- WO2017022021A1 WO2017022021A1 PCT/JP2015/071826 JP2015071826W WO2017022021A1 WO 2017022021 A1 WO2017022021 A1 WO 2017022021A1 JP 2015071826 W JP2015071826 W JP 2015071826W WO 2017022021 A1 WO2017022021 A1 WO 2017022021A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- rotor
- iron core
- circumferential direction
- convex portion
- bolt
- Prior art date
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
- H02K1/278—Surface mounted magnets; Inset magnets
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/28—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/28—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
- H02K1/30—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures using intermediate parts, e.g. spiders
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2201/00—Specific aspects not provided for in the other groups of this subclass relating to the magnetic circuits
- H02K2201/06—Magnetic cores, or permanent magnets characterised by their skew
Definitions
- the present invention relates to a rotor of a rotating electrical machine in which a plurality of magnets are provided on an iron core.
- a plurality of first magnets are arranged and fixed in the rotational direction on the outer peripheral surface of the first block, and on the outer peripheral surface of the second block.
- an electric motor rotor in which a plurality of second magnets are aligned and fixed in the rotation direction, and the same polarity of the first magnet and the second magnet is shifted in the rotation direction to form a step skew structure.
- the plurality of first magnets are fixed to the outer peripheral surface of the first block by changing their magnetic poles alternately in the rotation direction.
- the plurality of second magnets are fixed to the outer peripheral surface of the second block with their magnetic poles alternately changed in the rotation direction (see, for example, Patent Document 1).
- first magnets of the opposite poles and the second magnets of the opposite poles are adjacent to each other in the rotation direction, but the first magnet and the second magnet having the same poles are adjacent to each other also in the axial direction of the rotation axis. Therefore, when the first magnet and the second magnet are fixed to the first block and the second block attached to the rotating shaft, a strong magnetic force is received from both the rotating direction and the axial direction. Therefore, it takes time and effort to arrange the first magnet and the second magnet close to each other, and the productivity of the rotor of the electric motor is reduced.
- the present invention has been made to solve the above-described problems, and an object of the present invention is to obtain a rotor of a rotating electrical machine capable of improving productivity.
- the rotor of the rotating electrical machine includes a first rotor member and a second rotor member, and the first rotor member is provided on the first iron core member and the first iron core member.
- the second rotor member has a second iron core member and a second magnet group provided on the second iron core member, and The second iron core members are fixed to each other in a state of being aligned in the axial direction, the first and second magnet groups are adjacent to each other in the axial direction, and the first magnet group is aligned in the circumferential direction.
- the second magnet group has a plurality of second magnets arranged in the circumferential direction, and the first and second magnets of the same polarity adjacent to each other are
- the first and second iron core members are provided with a first recess and the other is provided with a first recess in the circumferential direction.
- First protrusions for engagement are provided in the circumferential direction in section.
- the rotor of the rotating electrical machine includes a first rotor member, a second rotor member, and a rotor base
- the first rotor member includes a first iron core member and a first rotor member.
- a first magnet group provided on the iron core member, and the second rotor member includes a second iron core member and a second magnet group provided on the second iron core member.
- the first and second iron core members are adjacent to each other in the radial direction and are fixed to the rotor base in the axial direction, and the first and second magnet groups are adjacent to each other in the radial direction.
- the first magnet group has a plurality of first magnets arranged in the circumferential direction
- the second magnet group has a plurality of second magnets arranged in the circumferential direction and adjacent to each other.
- the first and second magnets having the same polarity are displaced from each other by a specific angle in the circumferential direction, and the first and second iron core members are few.
- the rotor base also either a While the provided first recess, the other first convex portion is provided which engages in the circumferential direction in the first recess.
- the first convex portion is engaged with the first concave portion in the circumferential direction, thereby positioning the first and second rotor members in the circumferential direction and the radial direction more accurately. And can be done easily. Further, the engagement state between the first convex portion and the first concave portion is more reliably maintained by the circumferential component of the magnetic repulsive force and the magnetic attractive force generated between the first magnet and the second magnet. can do. For this reason, the productivity of the rotor can be improved.
- FIG. 4 is an exploded perspective view showing the rotor of FIG. 3.
- FIG. 10 It is an expansion perspective view which shows the 1st convex part of the 1st rotor member of FIG. It is a perspective view which shows a state when inserting the 1st convex part of FIG. 7 in the 1st recessed part of FIG. It is a front view which shows the positional relationship of the circumferential direction of the 1st and 2nd rotor member when the 1st convex part of FIG. 10 is inserted in the recessed part insertion part. It is a front view which shows the positional relationship of the circumferential direction of the 1st and 2nd rotor member when the 1st convex part engaging part of FIG. 10 is fitted in the 1st recessed part engaging part.
- FIG. 1 It is a perspective view which shows the other example of the rotor by Embodiment 1 of this invention. It is a principal part perspective view which shows the 1st convex part of the rotor of the rotary electric machine by Embodiment 2 of this invention. It is a principal part perspective view which shows the 1st recessed part of the rotor of the rotary electric machine by Embodiment 2 of this invention. It is a rear view which shows the 1st rotor member when it sees from the 2nd rotor member side in the rotor of the rotary electric machine by Embodiment 3 of this invention.
- FIG. 1 is a perspective view showing a rotary electric machine according to Embodiment 1 of the present invention.
- FIG. 2 is a front view showing the rotating electrical machine of FIG.
- a rotating electrical machine 1 includes a stator 2 that is a cylindrical armature, a rotating shaft 3 that is arranged coaxially with the stator 2, a stator 2 that is fixed to the rotating shaft 3 and is integrated with the rotating shaft 3. And a rotor 4 that is rotated relative to the rotor.
- the rotary electric machine 1 is an inner rotor type rotary electric machine in which the rotor 4 is arranged on the radially inner side of the cylindrical stator 2.
- the stator 2 includes a cylindrical stator core 7 made of a magnetic material such as iron, and a stator coil 8 provided on the stator core 7.
- the stator core 7 has a cylindrical core back 9 and a plurality of magnetic pole teeth 10 projecting radially inward from the inner peripheral portion of the core back 9.
- the plurality of magnetic teeth 10 are provided at intervals in the circumferential direction of the stator core 7.
- the conducting wire of the stator coil 8 is passed through a slot formed between the magnetic pole teeth 10.
- a rotating magnetic field is generated in the stator 2 by supplying an alternating current to the stator coil 8.
- the rotor 4 is opposed to the stator 2 with a gap in the radial direction. Further, the rotor 4 is arranged coaxially with the rotation shaft 3. A shaft hole 11 that is a through hole is provided in the center of the rotor 4. The rotation shaft 3 is fitted in the shaft hole 11. A key groove 12 along the axis of the rotary shaft 3 is provided on the outer peripheral surface of the rotary shaft 3. A key groove 13 along the axis of the rotary shaft 3 is provided on the inner surface of the shaft hole 11. A common key is fitted in the key grooves 12 and 13. Thereby, the position of the rotor 4 with respect to the rotating shaft 3 is fixed in the rotation direction of the rotor 4, that is, the circumferential direction of the rotor 4. The rotating shaft 3 and the rotor 4 rotate about the axis of the rotating shaft 3 with respect to the stator 2 by the generation of the rotating magnetic field of the stator 2.
- FIG. 3 is a perspective view showing the rotor 4 of FIG.
- FIG. 4 is an exploded perspective view showing the rotor 4 of FIG.
- the rotor 4 includes a first rotor member 15 and a second rotor member 16 that are arranged side by side in the axial direction of the rotary shaft 3.
- the first rotor member 15 includes a first iron core member 17 made of a magnetic material such as iron, and a first magnet group 18 provided on the first iron core member 17. Yes.
- the first iron core member 17 includes a cylindrical boss portion 171, an annular outer ring portion 172 that surrounds the outer periphery of the boss portion 171 on the radially outer side of the boss portion 171, and the boss portion 171 and the outer ring portion 172. It has a plurality of (four in this example) ribs 173 to be connected. Thereby, the outer peripheral surface of the first iron core member 17 is a cylindrical surface centered on the axis of the rotating shaft 3.
- the plurality of first magnets 181 are arranged in the circumferential direction of the rotor 4 with different magnetic poles. Thereby, among the two first magnets 181 adjacent to each other in the circumferential direction of the rotor 4, the magnetic pole of one first magnet 181 is an S pole, and the magnetic pole of the other first magnet 181. Is N pole.
- the second rotor member 16 includes a second iron core member 19 made of a magnetic material such as iron, and a second magnet group 20 provided on the second iron core member 19. Yes.
- the second iron core member 19 includes a cylindrical boss portion 191, an annular outer ring portion 192 that surrounds the outer periphery of the boss portion 191 on the radially outer side of the boss portion 191, and the boss portion 191 and the outer ring portion 192. And a plurality of (four in this example) ribs 193 to be connected.
- the outer peripheral surface of the second iron core member 19 is a cylindrical surface centered on the axis of the rotating shaft 3.
- the second magnet group 20 has a plurality of second magnets 201 arranged in the circumferential direction of the rotor 4.
- the number of second magnets 201 is the same as the number of first magnets 181. Therefore, in this example, 40 second magnets 201 are fixed to the outer peripheral surface of the second iron core member 19 side by side in the circumferential direction.
- Each second magnet 201 faces the stator 2 in the radial direction of the rotor 4.
- a plurality of second magnets 201 are arranged in the circumferential direction of the rotor 4 with the magnetic poles alternately changed.
- the magnetic pole of one second magnet 201 is an S pole
- the magnetic pole of the other second magnet 201 is N pole.
- the shaft hole 11 is provided at each of the center of the boss 171 of the first core member 17 and the center of the boss 191 of the second core member 19.
- the common rotating shaft 3 is fitted in the shaft hole 11 of the first iron core member 17 and the shaft hole 11 of the second iron core member 19.
- the first and second rotor members 15 and 16 are arranged coaxially with the rotation shaft 3. Further, the positioning of the first and second rotor members 15 and 16 with respect to the rotation shaft 3 in the rotation direction of the rotor 4 is performed by fitting keys into the key grooves 12 and 13.
- the first and second rotor members 15 and 16 are arranged such that the side surface 17a of the first iron core member 17 and the side surface 19a of the second iron core member 19 are opposed to each other in the axial direction. Thereby, the first and second magnet groups 18 and 20 are adjacent to each other in the axial direction of the rotor 4.
- a plurality of first bolt through holes 21 are provided in the outer ring portion 172 of the first iron core member 17 at intervals in the circumferential direction.
- Each first bolt through hole 21 is a through hole that penetrates the outer ring portion 172 in the axial direction.
- four first bolt through holes 21 are provided in the outer ring portion 172, and each first bolt through hole 21 is a round hole having a circular cross section.
- each screw hole 22 In the side surface 19a of the outer ring portion 192 of the second iron core member 19, the same number of screw holes 22 as the number of the first bolt through holes 21 are provided at intervals in the circumferential direction. Therefore, in this example, four screw holes 22 are provided in the outer ring portion 192. The circumferential position of each screw hole 22 coincides with the circumferential position of each first bolt through hole 21.
- FIG. 5 is a perspective view showing the first iron core member 17 and the second iron core member 19 with the first and second magnets 181 and 201 shown in FIG. 3 removed.
- a plurality of magnet arrangement grooves 172 a arranged in the circumferential direction of the first core member 17 are provided on the outer peripheral surface of the outer ring portion 172 of the first core member 17.
- Two magnet arrangement grooves 172 a adjacent to each other are partitioned by a groove wall 172 b along the axis of the first iron core member 17.
- the height of the groove wall 172 b is lower than the thickness of the first magnet 181.
- Each first magnet 181 is fixed to the magnet arrangement groove 172a with, for example, an adhesive or the like in a state of being fitted in the magnet arrangement groove 172a.
- a plurality of magnet arrangement grooves 192 a arranged in the circumferential direction of the second core member 19 are provided on the outer peripheral surface of the outer ring portion 192 of the second core member 19.
- Two magnet arrangement grooves 192 a adjacent to each other are partitioned by a groove wall 192 b along the axis of the second iron core member 19.
- the height of the groove wall 192 b is lower than the thickness of the second magnet 201.
- Each second magnet 201 is fixed to the magnet arrangement groove 192a with, for example, an adhesive or the like in a state of being fitted in the magnet arrangement groove 192a.
- each second magnet 201 with respect to the reference line P is shifted from the circumferential position of each first magnet 181 with respect to the reference line P by a specific angle ⁇ ° in mechanical angle. Accordingly, the first and second magnets 181 and 201 having the same polarity adjacent to each other are displaced by a specific angle ⁇ ° in the circumferential direction of the rotor 4.
- Each first convex portion 31 is inserted into the first concave portion 32 and is engaged with the first concave portion 32 in the circumferential direction of the rotor 4.
- Each first convex portion 31 is engaged with each first concave portion 32 in the same direction in the circumferential direction of the rotor 4.
- each first convex portion 31 has a first convex portion engaging portion 311 that fits into the first concave portion 32.
- the width direction of the first protrusion engaging portion 311 coincides with the radial direction of the rotor 4.
- the width of the first convex portion engaging portion 311 is continuously narrowed in the direction in which the first convex portion 31 engages with the first concave portion 32. That is, the shape of the first convex portion engaging portion 311 is a tapered shape in which the width of the first convex portion 31 is continuously narrowed toward one end portion in the circumferential direction of the first convex portion 31.
- each first concave portion 32 includes a first concave portion insertion portion 321 and a first concave portion engagement protruding from the first concave portion insertion portion 321 in the circumferential direction of the rotor 4. Part 322.
- the width direction of the first recess engaging portion 322 coincides with the radial direction of the rotor 4.
- size of the 1st recessed part insertion part 321 is a magnitude
- the shape of the first recessed portion insertion portion 321 is rectangular.
- the width of the first recess engaging portion 322 is continuously narrowed in the direction in which the first protrusion 31 engages with the first recess 32. That is, the shape of the first recess engaging portion 322 is a tapered shape in which the width of the first recess 32 is continuously narrowed toward one circumferential end of the first recess 32.
- the first convex portion 31 is positioned in the circumferential direction and the radial direction of the rotor 4 with respect to the first concave portion 32 by fitting the first convex portion engaging portion 311 into the first concave portion engaging portion 322. About has been fixed.
- FIG. 11 is a front view showing a positional relationship in the circumferential direction between the first and second rotor members 15 and 16 when the first convex portion 31 of FIG. 10 is inserted into the concave portion insertion portion 321.
- the first and second magnets 181 and 191 having the same polarity are completely adjacent to each other in the axial direction. That is, in the state where the first convex portion 31 is inserted into the first concave portion insertion portion 321, the same-polarity first and second magnets 181 and 191 are present at the same phase position in the circumferential direction. .
- the S-pole first magnet 181 faces the S-pole second magnet 201 in the axial direction
- the N-pole second magnet 201 faces the magnet 181 in the axial direction.
- the second magnet 201 is not shown because the second magnet 201 is hidden behind the first magnet 181.
- the first rotor member 15 is turned into the second rotor member 16 in the direction in which the first convex portion engaging portion 311 is fitted into the first concave portion engaging portion 322, that is, in the direction of the arrow B1 in FIG. Rotate against.
- the first convex portion engaging portion 311 is fitted into the first concave portion engaging portion 322, and the first convex portion 31 is engaged with the first concave portion 32 in the circumferential direction and the radial direction.
- FIG. 12 shows the positional relationship in the circumferential direction between the first and second rotor members 15 and 16 when the first convex portion engaging portion 311 in FIG. 10 is fitted into the first concave portion engaging portion 322.
- FIG. FIG. When the first rotor member 15 is rotated with respect to the second rotor member 16 in the direction in which the first convex portion engaging portion 311 is fitted into the first concave portion engaging portion 322, each first magnet 181 is provided. Is shifted in the circumferential direction with respect to each second magnet 201. Thereby, a step skew structure is formed in which the magnetic poles of the first rotor member 15 are shifted in the circumferential direction with respect to the magnetic poles of the second rotor member 16.
- the area of the first magnet 181 facing the second magnet 201 having the same polarity is larger than the area of the first magnet 181 facing the second magnet 201 having the opposite polarity. ing. Therefore, a magnetic repulsion force is generated in the axial direction as a whole between the first rotor member 15 and the second rotor member 16.
- the first rotor member 15 and The bolts 23 are passed through the first bolt through holes 21 of the first iron core member 17 so that the second rotor member 16 is not separated from each other, and the bolts 23 are passed through the screws of the second iron core member 19. Install in hole 22. Thereafter, the first and second core members 17, 19 are held in a state where the bolts 23 are tightened so that the side surface 17 a of the first core member 17 and the side surface 19 a of the second core member 19 are in contact with each other. Fix each other. Thereby, the rotor 4 is completed.
- the rotating shaft 3 is fitted into the shaft hole 11 of the rotor 4 while the circumferential position of the key groove 12 of the rotating shaft 3 and the circumferential position of the key groove 13 of the shaft hole 11 are made to coincide with each other.
- the key is fitted into the space formed by the key groove 12 and the key groove 13.
- the rotor 4 is positioned in the circumferential direction with respect to the rotating shaft 3, and the rotor 4 is fixed to the rotating shaft 3.
- first convex portion 31 by engaging the first convex portion 31 with the first concave portion 32 in the circumferential direction, it is possible to reduce the load of the bolt 23 that fastens the first and second rotor members 15 and 16 to each other.
- the number of bolts 23 can be reduced. Thereby, the effort of the fastening operation
- FIG. 15 is a perspective view showing a main part of the first recess 32 of the rotor of the rotating electrical machine according to the second embodiment of the present invention.
- the width of the first recess insertion portion 321 is constant at any position in the depth direction of the first recess 32.
- the width of the first recess engaging portion 322 continuously extends toward the bottom surface in the depth direction of the first recess 32. That is, the cross-sectional shape of the first recessed portion insertion portion 321 in the plane along the radial direction of the rotor 4 is a rectangular shape having a certain width, and the first in the plane along the radial direction of the rotor 4.
- the recessed portion engaging portion 322 has a cross-sectional shape that continuously expands toward the bottom surface in the depth direction of the first recessed portion 32.
- the first convex portion engaging portion 311 and the inner surface of the first concave portion engaging portion 322 are aligned. Not only the circumferential direction and the radial direction of the rotor 4 but also the axial direction are engaged with each other, and the first iron core member 17 is prevented from coming off from the second iron core member 19 in the axial direction.
- Other configurations are the same as those in the first embodiment.
- the cross-sectional shape of the first convex portion engaging portion 311 is a tapered shape that widens toward the projecting direction end portion of the first convex portion 31, and the cross-sectional shape of the first concave portion engaging portion 322 is the first concave portion 32. Therefore, when the first convex portion engaging portion 311 is fitted into the first concave portion engaging portion 322, only the circumferential direction and the radial direction of the rotor 4 are provided. The first convex portion 31 engages with the first concave portion 32 also in the axial direction.
- the magnetic repulsive force and magnetic force generated between the first magnet 181 and the second magnet 201 are the same as in the first embodiment. Since the circumferential component of the suction force is applied in the direction in which the first convex portion 31 is engaged with the first concave portion 32, the engaged state between the first convex portion 31 and the first concave portion 32 is maintained. The Further, the area of the first magnet 181 facing the second magnet 201 having the same polarity is larger than the area of the first magnet 181 facing the second magnet 201 having the opposite polarity. .
- the bolts 23 are passed through the first bolt through holes 21 of the first iron core member 17, the bolts 23 are attached to the screw holes 22 of the second iron core member 19, and the bolts 23 are tightened.
- the first and second iron core members 17 and 19 are fastened together. Thereby, the rotor 4 is completed.
- the width of the first convex portion engaging portion 311 is widened toward the projecting direction end of the first convex portion 31, and the width of the first concave portion engaging portion 322 is the first width. Since the first concave portion 32 spreads toward the bottom surface in the depth direction, the first convex portion engaging portion 311 fits into the first concave portion engaging portion 322, so that the circumferential direction and radial direction of the rotor 4 Not only the axial direction but also the first convex portion 31 can be engaged with the first concave portion 32. Thereby, the positioning of the first core member 17 with respect to the second core member 19 can be performed more reliably and easily, and the productivity of the rotor 4 can be further improved.
- the first and second iron core members 17 and 19 are fixed to each other by fastening the bolts 23, but the first convex portion engaging portion 311 is connected to the first concave portion engaging portion 322. Since the first core member 17 can be prevented from being detached from the second core member 19 in the axial direction by fitting, the bolts 23 are not necessary. In this way, the number of parts can be reduced, and the productivity of the rotor 4 can be further improved.
- the first iron core member 17 is moved to the second position by screwing each bolt 23 into each screw hole 22 against the magnetic repulsive force generated between the first magnet 181 and the second magnet 201.
- the first iron core member 17 is displaced toward the second iron core member 19 until it comes into contact with the iron core member 19. That is, by using each bolt 23 as a jack bolt, the first core member 17 is moved to the second core member 19 against the magnetic repulsion force generated between the first magnet 181 and the second magnet 201. Displace toward. Thereby, each 1st convex part 31 is inserted in each recessed part insertion part 321.
- the bolt 23 passed through the elongated hole 21a is screwed into the screw hole 22 to counter the magnetic repulsive force.
- the first rotor member 15 can be displaced toward the second rotor member 16.
- the first rotor member 15 is rotated with respect to the second rotor member 16 and the first convex portion
- the engaging portion 311 can be fitted into the first recess engaging portion 322.
- each round hole 21b corresponds with the circumferential direction position of the screw hole 22 in the state in which the 1st convex part 31 is inserted in the 1st recessed part insertion part 321,
- the first convex portion engaging portion 311 is set to a position shifted from the circumferential position of the screw hole 22 in a state where the first concave portion engaging portion 311 is fitted in the first concave portion engaging portion 322, the circumferential position of each round hole 21b is set.
- the first convex portion 31 is displaced from the circumferential position of the screw hole 22 in a state where the first convex portion 31 is inserted into the first concave portion insertion portion 321, and the first convex portion engaging portion 311 is shifted to the first concave portion engaging portion.
- You may set to the position corresponding to the circumferential direction position of the screw hole 22 in the state fitted to 322. In this case, in a state where the first convex portion 31 is inserted into the first concave portion insertion portion 321, only the bolt 23 passed through each elongated hole 21a is screwed into the screw hole 22, and the first convex portion engagement is performed.
- the bolts 23 After fitting the joint portion 311 into the first recess engaging portion 322, the bolts 23 are passed through the respective round holes 21 b and screwed into the respective screw holes 22. If it does in this way, the number of the bolts 23 which fix the 1st iron core member 17 to the 2nd iron core member 19 can be increased.
- FIG. FIG. 19 is a perspective view showing first rotor member 15 in the rotor of the rotating electrical machine according to the fourth embodiment of the present invention.
- the outer ring part 172 of the first iron core member 17 includes an inner ring part 175 surrounding the boss part 171 and a plurality of arc-shaped iron core blocks 176 attached to the outer peripheral part of the inner ring part 175.
- four arc-shaped iron core blocks 176 that are equally divided in the circumferential direction of the rotor 4 surround the inner ring portion 175 in a state where the arc-shaped iron core blocks 176 are arranged without gaps in the circumferential direction of the first iron core member 17.
- the boss portion 171, each rib 173, and the inner ring portion 175 are formed of a single material, and constitute a main body core block 177. That is, the first iron core member 17 includes a main body core block 177 composed of a boss portion 171, a plurality of ribs 173 and an inner ring portion 175, and a plurality of arc-shaped core blocks attached to the outer peripheral portion of the main body core block 177.
- the assembly core member has 176 as a plurality of divided core blocks.
- the first convex portion 31 and the first bolt through hole 21 are provided in each arc-shaped core block 176.
- a plurality of first magnets 181 are attached to each arc-shaped iron core block 176 side by side in the circumferential direction.
- the same number of first magnets 181 are attached to each arc-shaped core block 176.
- the first magnet group 18 is configured by attaching the arc-shaped core blocks 176 to the inner ring portion 175 in a state where the arc-shaped core blocks 176 are arranged in the circumferential direction.
- FIG. 20 is a perspective view showing the second rotor member 16 in the rotor of the rotating electrical machine according to the fourth embodiment of the present invention.
- the outer ring portion 192 of the second iron core member 19 includes an inner ring portion 195 that surrounds the boss portion 191 and a plurality of arc-shaped core blocks 196 that are attached to the outer peripheral portion of the inner ring portion 195.
- four arc-shaped iron core blocks 196 that are equally divided in the circumferential direction of the rotor 4 surround the inner ring portion 195 in a state in which the second iron core member 19 is arranged without gaps in the circumferential direction.
- the boss 191, each rib 193, and the inner ring portion 195 are formed of a single material and constitute a main body core block 197. That is, the ninth iron core member 19 includes a main body core block 197 composed of a boss 191, a plurality of ribs 193 and an inner ring portion 195, and a plurality of arc-shaped core blocks attached to the outer periphery of the main body core block 197. This is a collective core member having 196 as a plurality of divided core blocks. The first recess 32 and the screw hole 22 are provided in each arc-shaped core block 196.
- a plurality of second magnets 201 are attached to each arcuate core block 196 side by side in the circumferential direction.
- the same number of second magnets 201 are attached to each arc-shaped core block 196.
- the second magnet group 20 is configured by attaching the arc-shaped core blocks 196 to the inner ring portion 195 in a state where the arc-shaped iron core blocks 196 are arranged in the circumferential direction.
- FIG. 21 is a perspective view showing an inner peripheral portion of the arc-shaped core block 176 of FIG.
- a taper block protruding toward the main body core block 177 is fixed to the inner peripheral surface of each arc-shaped core block 176 as the second convex portion 41.
- the second convex portion 41 which is a tapered block, is a separate member from the arc-shaped core block 176.
- a fitting hole 42 is provided on the inner peripheral surface of each arc-shaped core block 176.
- the second convex portion 41 is fixed to the arc-shaped core block 176 by being fitted into the fitting hole 42 by press-fitting.
- FIG. 22 is a perspective view showing the outer periphery of the main body iron core block 177 of FIG.
- the same number of second concave portions 43 as the number of the second convex portions 41 of each arc-shaped core block 176 are provided on the outer peripheral surface of the main body core block 177.
- Each of the second recesses 43 is provided on the outer peripheral surface of the main body core block 177 in accordance with the circumferential position of each of the second protrusions 41.
- the second convex portion 41 is inserted into the second concave portion 43 and is second in the circumferential direction of the rotor 4 in the same direction as the direction in which the first convex portion 31 engages with the first concave portion 32. Is engaged with the recess 43. Each second convex portion 41 is engaged with each second concave portion 43 in the same direction in the circumferential direction of the rotor 4.
- the second convex portion 41 has a second convex portion engaging portion 411 that fits into the second concave portion 43.
- the width direction of the second convex portion engaging portion 411 coincides with the axial direction of the rotor 4. Further, the width of the second convex portion engaging portion 411 is continuously narrowed in the direction in which the second convex portion 41 engages with the second concave portion 43. That is, the shape of the second convex portion engaging portion 411 is a tapered shape in which the width of the second convex portion 41 is continuously narrowed toward one circumferential end of the second convex portion 41.
- each second concave portion 43 includes a second concave portion insertion portion 431 and a second concave portion engaging portion that protrudes from the second concave portion insertion portion 431 in the circumferential direction of the rotor 4. 432.
- the width direction of the second recess engaging portion 432 coincides with the axial direction of the rotor 4.
- size of the 2nd recessed part insertion part 431 is a magnitude
- the shape of the second recess insertion portion 431 is rectangular.
- the width of the second recessed portion engaging portion 432 is continuously narrowed in the direction in which the second protruding portion 41 engages with the second recessed portion 43. That is, the shape of the second recessed portion engaging portion 432 is a tapered shape in which the width of the second recessed portion 43 is continuously narrowed toward one circumferential end of the second recessed portion 43.
- the position of the second convex portion 41 is such that the second convex portion engaging portion 411 fits into the second concave portion engaging portion 432, and the circumferential direction and the axial direction of the rotor 4 with respect to the second concave portion 43. About has been fixed.
- the width of the second protrusion 41 in the axial direction of the rotor 4 is constant at any position in the protruding direction of the second protrusion 41.
- the width of the second recess 43 in the axial direction of the rotor 4 is also constant at any position in the depth direction of the second recess 43.
- Each arc-shaped core block 176 is configured such that the second convex portion engaging portion 411 fits into the second concave portion engaging portion 432 and the second convex portion 41 engages with the second concave portion 43, whereby the main body core block 177 is positioned in the circumferential direction and the axial direction.
- FIG. 23 is an enlarged perspective view showing the inner peripheral surface of the inner ring portion 175 of FIG.
- the inner ring portion 175 of the main body core block 177 is provided with a plurality of second bolt through holes 51 according to the circumferential position of each arc-shaped core block 176.
- two second bolt through holes 51 are provided in each portion of the inner ring portion 175 corresponding to the positions of both end portions in the circumferential direction of each arc-shaped core block 176.
- Each of the second bolt through holes 51 is a through hole that penetrates the inner ring portion 175 in the radial direction of the rotor 4.
- Each second bolt through hole 51 is a long hole along the circumferential direction of the rotor 4.
- a plurality of screw holes are provided on the inner peripheral surface of each arc-shaped core block 176.
- the circumferential position of each screw hole is set within the circumferential range of each second bolt through hole 51.
- Bolts 52 that are passed through the second bolt through holes 51 are attached to the respective screw holes of the arc-shaped core block 176.
- Each arc-shaped iron core block 176 has the second convex portion engaging portion 411 fitted into the second concave portion engaging portion 432 and the second convex portion 41 is engaged with the second concave portion 43. It is fastened to the inner ring portion 175 by a bolt 52 passed through the second bolt through hole 51.
- the configuration of the second iron core member 19 is the same as that of the first iron core member 17. That is, the second convex portions 41 are fixed to the inner peripheral surface of each arc-shaped core block 196, and the same number of second convex portions 41 as the second convex portions 41 of each arc-shaped core block 196 are also fixed to the outer peripheral surface of the main body core block 177. Two recesses 43 are provided. In the second iron core member 19, the second convex portion 41 is inserted into the second concave portion 43, and the first convex portion 31 is changed to the first concave portion 32 in the circumferential direction of the rotor 4. The second recess 43 is engaged in the same direction as the engaging direction.
- Each arc-shaped core block 196 has a main core block formed by fitting the second convex portion engaging portion 411 into the second concave portion engaging portion 432 and engaging the second convex portion 41 with the second concave portion 43. Positioned with respect to 197 in the circumferential direction and the axial direction.
- a plurality of second bolt through holes 51 similar to those in the first iron core member 17 are provided in the inner ring portion 195 of the main body iron core block 197.
- two second bolt through holes 51 are provided in each portion of the inner ring portion 195 corresponding to the positions of both end portions in the circumferential direction of each arc-shaped core block 196.
- each arc-shaped core block 196 has the second convex portion engaging portion 411 fitted in the second concave portion engaging portion 432 and the second convex portion 41 is engaged with the second concave portion 43 in each state. It is fastened to the inner ring portion 195 by a bolt 52 passed through the second bolt through hole 51.
- Other configurations are the same as those in the first embodiment.
- the bolts 52 are passed through the second bolt through holes 51 and the bolts 52 are attached to the screw holes of the arc-shaped core block 176, thereby temporarily fixing the arc-shaped core blocks 176 to the outer peripheral surface of the inner ring portion 175.
- each bolt 52 is slightly loosened, and all the arc-shaped iron core blocks 176 are moved to the main body in the direction in which the second convex portion engaging portion 411 is fitted into the second concave portion engaging portion 432, that is, in the direction of arrow B2 in FIG.
- the core block 177 is rotated simultaneously.
- the second convex portion engaging portion 411 is fitted into the second concave portion engaging portion 432, the second convex portion 41 is engaged with the second concave portion 43 in the circumferential direction, and the main core block 177 is engaged.
- All the arc-shaped core blocks 176 are positioned in the circumferential direction and the axial direction.
- each arc-shaped core block 176 is guided by each bolt 52 along the second bolt through hole 51 which is a long hole, each arc-shaped core block 176 can be easily moved in the circumferential direction with respect to the main body core block 177. become.
- the second rotor member 16 is also assembled by fixing all the arc-shaped core blocks 196 to the outer peripheral portion of the main body core block 197 in the same procedure as the first rotor member 15.
- the procedure for assembling the first and second rotor members 15 and 16 to manufacture the rotor 4 is the same as that in the first embodiment.
- the first and second core members 17, 19 are divided into main body core blocks 177, 197 and arc-shaped core blocks 176, 196. Work can be performed on each of the arc-shaped core blocks 176 and 196 that are smaller in size than the members 17 and 19, and labor for manufacturing the first and second rotor members 15 and 16 can be reduced. .
- the plurality of arc-shaped core blocks 176, 196 are provided with second convex portions 41
- the main core blocks 177, 197 are provided with second concave portions 43
- the first convex portions 31 are the first convex portions 31. Since the second convex portion 41 is engaged with the second concave portion 43 in the circumferential direction of the rotor 4 in the same direction as the direction in which the first concave portion 32 is engaged, each arc-shaped core with respect to the main body core blocks 177 and 197 is provided.
- the positioning of the blocks 176 and 196 can be facilitated, and the assembly work of the first and second iron core members 17 and 19 can be facilitated.
- the second bolt through holes 51 provided in the main body core blocks 177 and 197 are long holes along the circumferential direction of the rotor 4, and the bolts 52 passed through the second bolt through holes 51 are used. Since the arc-shaped core blocks 176 and 196 are fastened to the main body core blocks 177 and 197, the arc-shaped core blocks 176 and 196 are moved in the circumferential direction with respect to the main body core blocks 177 and 197 by loosening the bolt 52. The movement of the iron core blocks 176 and 196 can be guided by the bolt 52. Thereby, the assembly operation
- each of the first and second core members 17 and 19 includes the core core blocks 177 and 197 and a plurality of arc-shaped core blocks 176 and 196 as a plurality of divided core blocks.
- only one of the first and second core members 17 and 19 may be a collective core member.
- the width of the second protrusion 41 is constant at any position in the protruding direction of the second protrusion 41, and the width of the second recess 43 is the depth of the second recess 43.
- the width of the second convex portion engaging portion 411 is widened toward the projecting direction end portion of the second convex portion 41, and the second concave portion engaging portion 432 The width may be increased toward the bottom surface of the second recess 43 in the depth direction.
- the second convex portion engaging portion 411 and the second concave portion engaging portion 432 can be engaged with each other in the radial direction of the rotor 4, and the circumferential direction and the axial direction of the rotor 4.
- the arc-shaped core blocks 176 and 196 can be positioned with respect to the main body core blocks 177 and 197.
- the first bolt through hole 21 is provided in the arc core block 176 of the first core member 17, and the screw hole 22 is provided in the arc core block 196 of the second core member 19.
- the main body core block 177 of the first core member 17 may be provided with the first bolt through hole 21 and the main body core block 197 of the second core member 19 may be provided with the screw hole 22.
- the first and second iron core members 17 and 19 can be fastened to each other by the bolt 23 passed through the first bolt through hole 21.
- arc-shaped core blocks 176 and 196 that are equally divided in the circumferential direction of the rotor 4 are attached to the outer peripheral portion of the main body core blocks 177 and 197, but one arc-shaped core block is provided. If the central angle of the arcs 176 and 196 is 180 ° or less, the circumferential direction of the rotor 4 may be divided into two, three, or five arc-shaped core blocks 176 and 196. In addition, a plurality of arc-shaped core blocks that are unevenly divided in the circumferential direction of the rotor 4 may be attached to the outer peripheral portions of the main body core blocks 176 and 196.
- the second convex portion 41 is a separate member from the arc-shaped core blocks 176 and 196 and the main body core blocks 177 and 197, but in the first core member 17, the second convex portion 41.
- the arc-shaped core block 176 may be formed of a single material, or the second protrusion 41 and the arc-shaped core block 196 may be formed of a single material in the second core member 19.
- the second convex portion 41 is provided in the arc-shaped core blocks 176 and 196 and the second concave portion 43 is provided in the main body core blocks 177 and 197.
- the main core blocks 177 and 197 may be provided, and the second recess 43 may be provided in the arc-shaped core blocks 176 and 196.
- the 2nd convex part 41 and the main body core block 177 may be formed with a single material, and the 2nd convex part 41 and the main body core block 197 may be formed with a single material.
- the second convex portion 41 may be a separate member from the main body core blocks 177 and 196 and the arc-shaped core blocks 176 and 196.
- the fitting holes into which the second convex portion 41 as the taper block fits are formed in the main body core blocks 177 and 197.
- the plurality of second bolt through holes 51 are all elongated holes, but at least one of the plurality of second bolt through holes 51 may be a round hole.
- the position of the second bolt through hole 51 which is a round hole is such that the arc-shaped core blocks 176 and 196 are moved into the main body core blocks 177 and 197 by the engagement of the second convex portion 41 and the second concave portion 43. It is set to match the position of the bolt holes of the arc-shaped core blocks 176 and 196 when positioned with respect to the arc-shaped core blocks 176 and 196.
- the second convex portion engaging portion 411 is merely fitted into the second concave portion engaging portion 432, but the second convex portion engaging portion 411 is connected to the second concave portion engaging portion. It may be fitted into the joint portion 432 by press fitting. In this way, the state in which the second convex portion engaging portion 411 is fitted to the second concave portion engaging portion 432 can be more reliably maintained.
- the shape of the second protrusion engaging portion 411 is a tapered shape whose width is continuously narrowed in the circumferential direction, and the shape of the second recessed portion engaging portion 432 is in the circumferential direction.
- the taper shape has a continuously narrowing width
- the respective shapes of the second convex portion engaging portion 411 and the second concave portion engaging portion 432 are not tapered, and the width is constant in the circumferential direction. You may make it a shape. That is, the width of the second convex portion 41 may be constant at any position in the circumferential direction, and the width of the second concave portion 43 may be constant at any position in the circumferential direction.
- each of the arc-shaped core blocks 176 and 196 may be configured by stacking a plurality of magnetic plates.
- FIG. 24 is a perspective view showing an arc-shaped core block 176 of the first core member 17 in the rotor according to the fifth embodiment of the present invention.
- each arc-shaped iron core block 176 is formed by laminating a plurality of magnetic plates 176a in the axial direction.
- the magnetic plate a steel plate or the like is used, for example.
- the magnetic plates 176a are stacked by being connected to each other, for example, by caulking or welding.
- a plurality of nut block grooves 178 along the axial direction of the rotor 4 are formed in the inner peripheral portion of the arc-shaped core block 176.
- the cross section of the nut block groove 178 is composed of a housing part including the bottom surface of the groove and an opening part reaching the inner peripheral surface of the arc-shaped iron core block 176 from the housing part, and the width of the housing part is larger than the width of the opening part. It is getting bigger.
- a nut block 54 provided with a plurality of screw holes 53 is fitted into the accommodating portion of the nut block groove 178 by press fitting.
- two screw holes 53 are provided in the plate-like nut block 54.
- a bolt 52 passed through the second bolt through hole 51 of the main body core block 177 is attached through an opening portion of the nut block groove 178.
- each arc-shaped iron core block 196 is configured by laminating a plurality of magnetic plates in the axial direction.
- the configuration of each arc-shaped core block 196 of the second core member 19 is the same as the configuration of each arc-shaped core block 176 of the first core member 17.
- Other configurations are the same as those of the fourth embodiment.
- each arc-shaped iron core block 176 and 196 is a laminate of a plurality of magnetic plates. Only one of the arc-shaped core block 176 and the arc-shaped core block 196 of the second core members 17 and 19 may be a laminate of a plurality of magnetic plates.
- the nut block grooves 178 are provided in the arc-shaped iron core blocks 176 and 196, and the nut block 54 provided with the screw holes 53 is fitted in the nut block grooves 178.
- the screw hole can be directly provided, the nut block groove 178 and the nut block 54 may not be provided in the arc-shaped core blocks 176 and 196.
- Embodiment 6 FIG.
- the present invention is applied to the inner rotor type rotating electrical machine in which the rotor 4 is disposed on the radially inner side of the cylindrical stator 2, but on the radially inner side of the cylindrical rotor.
- the present invention may be applied to an outer rotor type rotating electrical machine in which a stator is arranged.
- FIG. 25 is an exploded perspective view showing the rotating electrical machine 1 according to the sixth embodiment of the present invention.
- the stator 2 is arranged on the radially inner side of the cylindrical rotor 4.
- the rotor 4 is fixed to the rotating shaft 3. Thereby, the rotor 4 is rotated integrally with the rotating shaft 3 around the axis of the rotating shaft 3.
- the stator 2 is arranged coaxially with the rotary shaft 3. Further, in the stator 2 having the stator core 7 and the stator coil, a plurality of magnetic teeth 10 protrude radially outward from the core back 9 of the stator core 7. The conducting wire of the stator coil 8 is passed through a slot formed between the magnetic pole teeth 10. A rotating magnetic field is generated in the stator 2 by supplying an alternating current to the stator coil 8.
- the rotor 4 has a first rotor member 15, a second rotor member 16, and a disc-like rotor base 61.
- the first rotor member 15, the second rotor member 16, and the rotor base 61 are fixed to each other in a state where they are arranged in the axial direction of the rotor 4.
- a rotor base 61 is fixed to the rotary shaft 3.
- the first rotor member 15 has a cylindrical first iron core member 17 and a first magnet group 18 provided on the inner periphery of the first iron core member 17.
- the second rotor member 16 has a cylindrical second iron core member 19 and a second magnet group 20 provided on the inner periphery of the second iron core member 19.
- the first magnet group 18 and the second magnet group 20 are adjacent to each other in the axial direction of the rotor 4.
- the first magnet group 18 has a plurality of first magnets 181 arranged in the circumferential direction of the rotor 4. The relationship between the number of first magnets 181 and the magnetic poles is the same as in the first embodiment. Each first magnet 181 faces the stator 2 in the radial direction of the rotor 4.
- the second magnet group 20 has a plurality of second magnets 201 arranged in the circumferential direction of the rotor 4.
- the relationship between the number of the second magnets 201 and the magnetic poles is the same as in the first embodiment. Further, the positional relationship between the first magnet 181 and the second magnet 201 in the circumferential direction of the rotor 4 is the same as that in the first embodiment.
- Each second magnet 201 faces the stator 2 in the radial direction of the rotor 4.
- the first and second rotor members 15 and 16 are fixed to each other with the side surface 17a of the first core member 17 and the side surface 19a of the second core member 19 facing each other.
- the second rotor member 16 is fixed to the rotor base 61 with the side surface opposite to the side surface 19 a of the second iron core member 19 facing the rotor base 61.
- FIG. 26 is an enlarged perspective view showing the side surface 17a of the first core member 17 of FIG.
- a plurality (four in this example) of first convex portions 31 are provided on the side surface 17 a of the first iron core member 17 at intervals in the circumferential direction of the rotor 4.
- the same number of first concave portions 32 as the number of the first convex portions 31 are provided on the side surface 19 a of the second iron core member 19 at intervals in the circumferential direction of the rotor 4.
- the respective configurations of the first convex portion 31 and the first concave portion 32 and the positional relationship in the circumferential direction between the first convex portion 31 and the first concave portion 32 are the same as those in the first embodiment.
- Positioning of the first rotor member 15 with respect to the second rotor member 16 in the circumferential direction and the radial direction is performed by the first convex portion 31 engaging with the first concave portion 32 in the circumferential direction. Yes.
- a plurality of through holes are provided as first bolt through holes 21 in the first and second iron core members 17 and 19, respectively.
- a plurality of screw holes (not shown) are provided in the rotor base 61 so as to coincide with the circumferential positions of the first bolt through holes 21.
- Bolts 23 that are sequentially passed through the first bolt through holes 21 of the first and second iron core members 17 and 19 are attached to the screw holes of the rotor base 61.
- the first and second iron core members 17 and 19 are put together on the rotor base 61 by the respective bolts 23 that are sequentially passed through the first bolt through holes 21 of the first and second iron core members 17 and 19. It is concluded.
- Other configurations are the same as those in the first embodiment.
- the procedure for manufacturing the rotor 4 by combining the first and second rotor members 15 and 16 is the same as that of the first embodiment.
- the first convex portion 31 becomes the first concave portion 32.
- the engagement can be made in the circumferential direction, and the positioning of the first rotor member 16 in the circumferential direction and the radial direction with respect to the second rotor member 16 can be more reliably and easily performed. Thereby, the productivity of the rotor 4 can be improved.
- each of the first and second iron core members 17 and 19 is an integrated iron core member that is not divided into a plurality of divided blocks.
- at least one of the second core members 17 and 19 may be a collective core member divided into a plurality of divided blocks.
- the assembly core member is configured to have a cylindrical main body core block and a plurality of arc-shaped core blocks attached to the inner periphery of the main body core block as a plurality of divided blocks.
- each arc-shaped iron core block is attached with a magnet that is provided on the aggregate core member among the first magnet 181 and the second magnet 201.
- the main body core block and the arc-shaped core block one of the second recesses similar to that of the fourth embodiment is provided, and the other is engaged with the second recess in the circumferential direction.
- the same 2nd convex part is provided.
- the main body core block is provided with a plurality of second bolt through holes, which are the same long holes as in the fourth embodiment, and each arc-shaped core block is formed by the bolt passed through each second bolt through hole. Fastened to the inner periphery of the core block.
- the first bolt through hole 21 provided in the assembly core member may be provided in the main body core block or may be provided in the arc-shaped core block.
- the first bolt through hole 21 is provided in each of the first and second iron core members 17 and 19, and the screw hole to which the bolt 23 passed through the first bolt through hole 21 is attached.
- the second core member 19 is provided with a screw hole, and the bolt 23 passed through the first bolt through hole 21 of the first core member 17 is replaced with the second core member. You may make it attach to 19 screw holes.
- the second iron core member 19 is fixed to the rotor base 61 by, for example, another bolt or welding.
- each of the rotor members 15 and 16 is fixed to the rotor base 61 with bolts.
- the rotor members 15 and 16 fixed to each other with bolts are welded to the rotor base 61.
- the rotor members 15 and 16 fixed to each other with bolts may be fixed to the inner surface of the cylindrical rotor base 61 by shrink fitting.
- Embodiment 7 FIG.
- the present invention is applied to a radial gap type rotating electrical machine in which the stator 2 and the rotor 4 face each other in the radial direction, but the stator 2 and the rotor 4 face each other in the axial direction.
- the present invention may be applied to an axial gap type rotating electrical machine.
- FIG. 27 is an exploded perspective view showing a rotary electric machine according to Embodiment 7 of the present invention.
- the rotor 4 faces the annular stator 2 with a gap in the axial direction of the rotary shaft 3.
- the rotor 4 is fixed to the rotating shaft 3. Thereby, the rotor 4 is rotated integrally with the rotating shaft 3 around the axis of the rotating shaft 3 while facing the stator 2 in the axial direction.
- the stator 2 is arranged coaxially with the rotary shaft 3.
- a stator coil (not shown)
- a plurality of magnetic teeth 10 protrude from the core back 9 of the stator core 7 toward the rotor 4 along the axial direction.
- the lead wires of the stator coil are passed through slots formed between the magnetic pole teeth 10.
- a rotating magnetic field is generated in the stator 2 by supplying an alternating current to the stator coil.
- the rotor 4 has an annular first rotor member 15, an annular second rotor member 16, and a disc-like rotor base 61.
- the outer diameter of the first rotor member 15 is smaller than the inner diameter of the second rotor member 16.
- the first rotor member 15 is disposed on the radially inner side than the second rotor member 16.
- Each of the first and second rotor members 15 and 16 is fixed to the rotor base 61 in the axial direction of the rotor 4.
- a rotor base 61 is fixed to the rotary shaft 3.
- the first rotor member 15 includes an annular first iron core member 17 and a first magnet group 18 provided on a side surface of the first iron core member 17 on the stator 2 side.
- the second rotor member 16 includes an annular second iron core member 19 and a second magnet group 20 provided on the side surface of the second iron core member 19 on the stator 2 side.
- the outer peripheral surface of the first iron core member 17 and the inner peripheral surface of the second iron core member 19 are in contact with each other.
- the first magnet group 18 and the second magnet group 20 are adjacent to each other in the radial direction of the rotor 4.
- the first magnet group 18 has a plurality of first magnets 181 arranged in the circumferential direction of the rotor 4. The relationship between the number of first magnets 181 and the magnetic poles is the same as in the first embodiment. Each first magnet 181 faces the stator 2 in the axial direction of the rotor 4.
- the second magnet group 20 has a plurality of second magnets 201 arranged in the circumferential direction of the rotor 4.
- the relationship between the number of the second magnets 201 and the magnetic poles is the same as in the first embodiment.
- Each second magnet 201 faces the stator 2 in the axial direction of the rotor 4.
- the first and second magnets 181 and 201 adjacent to each other in the radial direction of the rotor 4 are shifted by a skew machine angle ⁇ ° in the circumferential direction of the rotor 4. That is, the rotor 4 has a step skew structure in which the magnetic poles of the first rotor member 15 are shifted in the circumferential direction with respect to the magnetic poles of the second rotor member 16.
- the first iron core member 17 is fixed to the rotor base 61 with the side surface 17a opposite to the stator 2 side facing the rotor base 61.
- the second rotor member 16 is fixed to the rotor base 61 with the side surface 19 a opposite to the stator 2 side facing the rotor base 61.
- FIG. 28 is an enlarged perspective view showing the side surface 17a of the first iron core member 17 of FIG. A plurality (four in this example) of first convex portions 31 ⁇ / b> A are provided on the side surface 17 a of the first iron core member 17 at intervals in the circumferential direction of the rotor 4.
- the rotor base 61 is provided with the same number of first concave portions 32 ⁇ / b> A as the number of the first convex portions 31 ⁇ / b> A at intervals in the circumferential direction of the rotor 4.
- Each configuration of the first convex portion 31A and the first concave portion 32A and the positional relationship in the circumferential direction between the first convex portion 31A and the first concave portion 32A are the first convex portions in the first embodiment.
- the configuration of each of the first and second concave portions 32 and the positional relationship in the circumferential direction between the first convex portion 31 and the first concave portion 32 are the same.
- FIG. 29 is an enlarged perspective view showing a side surface 19a of the second core member 19 of FIG.
- a plurality (four in this example) of first convex portions 31 ⁇ / b> B are provided on the side surface 19 a of the second iron core member 19 at intervals in the circumferential direction of the rotor 4.
- the rotor base 61 is provided with the same number of first concave portions 32 ⁇ / b> B as the number of the first convex portions 31 ⁇ / b> B at intervals with respect to the circumferential direction of the rotor 4.
- the respective configurations of the first convex portion 31B and the first concave portion 32B and the positional relationship in the circumferential direction between the first convex portion 31B and the first concave portion 32B are the first convex portions in the first embodiment.
- the configuration of each of the first and second concave portions 32 and the positional relationship in the circumferential direction between the first convex portion 31 and the first concave portion 32 are the same.
- the direction in which the first convex portion 31A engages with the first concave portion 32A and the direction in which the first convex portion 31B engages with the first concave portion 32B are in the circumferential direction of the rotor 4. It is in the opposite direction.
- Positioning of the first rotor member 15 in the circumferential direction and the radial direction with respect to the rotor base 61 is performed by engaging the first convex portion 31A with the first concave portion 32A in the circumferential direction. Further, the positioning of the second rotor member 16 with respect to the rotor base 61 in the circumferential direction and the radial direction is performed by the first convex portion 31B engaging the first concave portion 32B in the circumferential direction. .
- the first iron core member 17 has a plurality of through holes as first bolt through holes 21A
- the second iron core member 19 has a plurality of through holes as first bolt through holes 21B
- the rotor base 61 includes a plurality of screw holes 22A that face the first bolt through holes 21A in the first iron core member 17 in the axial direction, and an axis line in the first bolt through holes 21B in the second iron core member 19.
- a plurality of screw holes 22B facing each other are provided.
- Bolts 23A passed through the first bolt through holes 21A are attached to the respective screw holes 22A of the rotor base 61, and the respective screw holes 22B of the rotor base 61 are passed through the first bolt through holes 21B.
- Bolts 23B are attached.
- the first iron core member 17 is fastened to the rotor base 61 by a bolt 23A passed through the first bolt through hole 21A.
- the second iron core member 19 is fastened to the rotor base 61 by bolts 23B passed through the first bolt through holes 21B.
- Other configurations are the same as those in the first embodiment.
- each first convex portion 31 ⁇ / b> A of the first rotor member 15 is moved to the rotor base 61.
- Each first recess 32A is inserted into the first recess insertion portion, and the first projection engaging portion of the first projection 31A is fitted in the recess engaging portion of the first recess 32A.
- the first rotor member 15 is rotated with respect to the rotor base 61.
- the first rotor member 15 is positioned with respect to the rotor base 61 in the circumferential direction and the radial direction.
- the first core member 17 is fastened to the rotor base 61 by passing the bolts 23A through the first bolt through holes 21A and attaching the bolts 23A to the respective screw holes 22A of the rotor base 61.
- the first rotor member 15 is fixed to the rotor base 61.
- the second rotor member 16 is also fixed to the rotor base 61 in the same manner as the first rotor member 15. That is, the first convex portions 31B of the second rotor member 16 are inserted into the first concave portion insertion portions of the first concave portions 32B of the rotor base 61, and the first convex portions 31B of the first convex portions 31B.
- Each of the second rotor members 16 is rotated with respect to the rotor base 61 in a direction in which the protrusion engaging portions of the first recess 32 ⁇ / b> B fit into the recess engaging portions of the first recess 32 ⁇ / b> B. Thereby, the positioning of the second rotor member 16 with respect to the rotor base 61 in the circumferential direction and the radial direction is performed.
- the circumferential direction component of the magnetic repulsive force and the magnetic attractive force generated between the first magnet 181 and the second magnet 201 causes the convex engaging portion of the first convex portion 31B to be the first concave portion.
- positioning of the second rotor member 16 with respect to the rotor base 61 in the circumferential direction and the radial direction is more reliably performed.
- the second iron core member 19 is fastened to the rotor base 61 by passing the bolts 23B through the first bolt through holes 21B and attaching the bolts 23B to the screw holes 22B of the rotor base 61.
- the second rotor member 16 is fixed to the rotor base 61. In this way, the first and second rotor members 15 and 16 are fixed to the rotor base 61.
- the second rotor member 16 is fixed to the rotor base 61.
- the second rotor member 16 is fixed to the rotor.
- the first rotor member 15 may be fixed to the rotor base 61 after being fixed to the base 61.
- the first protrusions 31A and 31B are replaced with the first recesses 32A and 32B.
- the productivity of the rotor 4 can be improved.
- the first convex portion 31 ⁇ / b> A is provided in the first iron core member 17 and the first concave portion 32 ⁇ / b> A is provided in the rotor base 61, but the first iron core member 17 has the first
- the first convex portion 31 ⁇ / b> A may be provided on the rotor base 61.
- the first convex portion 31 ⁇ / b> A may be formed of a single material with the first core member 17, or separate from the first core member 17, the second core member 19, and the rotor base 61. It may be a member.
- the first convex portion 31 ⁇ / b> B is provided on the second iron core member 19 and the first concave portion 32 ⁇ / b> B is provided on the rotor base 61. May be provided, and the first protrusion 31B may be provided on the rotor base 61.
- the first convex portion 31 ⁇ / b> B may be formed of a single material with the second core member 19, or separate from the first core member 17, the second core member 19, and the rotor base 61. It may be a member.
- all the first bolt through holes 21A of the first core member 17 are round holes, but at least each of the first bolt through holes 21A is the same as in the third embodiment.
- One of them may be a long hole along the circumferential direction of the rotor 4.
- the bolt 23A passed through the first bolt through hole 21A which is a long hole, can be used as a jack bolt, and the same effect as in the third embodiment can be obtained.
- the first convex portion 31 is provided in the first iron core member 17 and the first concave portion 32 is provided in the second iron core member 19, but the first iron core is not provided.
- the first concave portion 32 may be provided in the member 17, and the first convex portion 31 may be provided in the second iron core member 19.
- the first convex portion 31 may be formed of a single material with the second core member 19, or may be a separate member from the first and second core members 17, 19. .
- each of the first convex portions 31, 31A, 31B and the first concave portions 32, 32A, 32B has the same configuration as that of the first embodiment. Applying the same configuration as in the second embodiment in which the width of one convex engaging portion is widened toward the projecting direction end of the first convex portion 31 to the first convex portions 31, 31A, 31B, Even if the same configuration as that of the second embodiment in which the width of the first recess engaging portion is widened toward the bottom surface in the depth direction of the first recess 32 is applied to the first recesses 32, 32A, and 32B. Good.
- the 1st convex part engaging part of the 1st convex part 31, 31A, 31B just fits in the 1st recessed part engaging part of the 1st recessed part 32, 32A, 32B.
- the first convex portion engaging portions of the first convex portions 31, 31A, 31B may be fitted into the first concave portion engaging portions of the first concave portions 32, 32A, 32B by press-fitting. . If it does in this way, the state where the 1st convex part engagement part was fitted in the 1st concave part engagement part can be held still more reliably.
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- Engineering & Computer Science (AREA)
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- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
Description
実施の形態1.
図1は、この発明の実施の形態1による回転電機を示す斜視図である。また、図2は、図1の回転電機を示す正面図である。図において、回転電機1は、筒状の電機子である固定子2と、固定子2と同軸に配置されている回転軸3と、回転軸3に固定され回転軸3と一体に固定子2に対して回転される回転子4とを有している。この例では、筒状の固定子2の径方向内側に回転子4が配置されたインナロータ型の回転電機が回転電機1とされている。
図14は、この発明の実施の形態2による回転電機の回転子の第1の凸部31を示す要部斜視図である。第1の鉄心部材17の側面17aから突出している各第1の凸部31では、第1の凸部係合部311の幅が第1の凸部31の突出方向端部に向かって連続的に広がっている。即ち、回転子4の径方向に沿った平面における各第1の凸部係合部311の断面形状は、第1の凸部31の突出方向端部、即ち第1の凸部31の高さ方向上端部に向かって連続的に広がるテーパ形状になっている。
図16は、この発明の実施の形態3による回転電機の回転子において第2の回転子部材16側から見たときの第1の回転子部材15を示す背面図である。第1の鉄心部材17の外環部172に設けられている複数の第1のボルト通し穴21の少なくともいずれかは、回転子4の周方向に沿った長穴21aになっている。この例では、4つの第1のボルト通し穴21のうち、回転子4の軸線に関して対称位置に存在する2つの第1のボルト通し穴21が長穴21aになっており、他の2つの第1のボルト通し穴21が丸穴21bになっている。
図19は、この発明の実施の形態4による回転電機の回転子における第1の回転子部材15を示す斜視図である。第1の鉄心部材17の外環部172は、ボス部171を囲む内輪部175と、内輪部175の外周部に取り付けられている複数の弧状鉄心ブロック176とで構成されている。この例では、回転子4の周方向について均等に分割されている4つの弧状鉄心ブロック176が第1の鉄心部材17の周方向へ隙間なく並んだ状態で内輪部175を囲んでいる。また、ボス部171、各リブ173及び内輪部175は、単一材で形成されており、本体鉄心ブロック177を構成している。即ち、第1の鉄心部材17は、ボス部171、複数のリブ173及び内輪部175で構成された本体鉄心ブロック177と、本体鉄心ブロック177の外周部にそれぞれ取り付けられている複数の弧状鉄心ブロック176とを複数の分割鉄心ブロックとして有する集合鉄心部材になっている。第1の凸部31及び第1のボルト通し穴21は、各弧状鉄心ブロック176に設けられている。
第1及び第2の鉄心部材では、複数の磁性板を積層して各弧状鉄心ブロック176,196を構成してもよい。
各上記実施の形態では、筒状の固定子2の径方向内側に回転子4が配置されたインナロータ型の回転電機にこの発明が適用されているが、筒状の回転子の径方向内側に固定子が配置されたアウタロータ型の回転電機にこの発明を適用してもよい。
各上記実施の形態では、固定子2と回転子4とが径方向について対向するラジアルギャップ型の回転電機にこの発明が適用されているが、固定子2と回転子4とが軸線方向について対向するアキシャルギャップ型の回転電機にこの発明を適用してもよい。
Claims (14)
- 第1の回転子部材、及び
第2の回転子部材
を備え、
前記第1の回転子部材は、第1の鉄心部材と、前記第1の鉄心部材に設けられている第1の磁石群とを有し、
前記第2の回転子部材は、第2の鉄心部材と、前記第2の鉄心部材に設けられている第2の磁石群とを有し、
前記第1及び第2の鉄心部材は、軸線方向について並んだ状態で互いに固定されており、
前記第1及び第2の磁石群は、軸線方向について互いに隣接しており、
前記第1の磁石群は、周方向へ並んでいる複数の第1の磁石を有し、
前記第2の磁石群は、周方向へ並んでいる複数の第2の磁石を有し、
互いに隣接する同極の前記第1及び第2の磁石は、周方向へ特定の角度でずれており、
前記第1及び第2の鉄心部材のうち、一方には第1の凹部が設けられ、他方には前記第1の凹部に周方向について係合する第1の凸部が設けられている回転電機の回転子。 - 前記第1の凸部は、前記第1及び第2の鉄心部材のそれぞれと別部材になっている請求項1に記載の回転電機の回転子。
- 前記第1及び第2の鉄心部材のいずれかには、複数の貫通穴が第1のボルト通し穴として設けられており、
各前記第1のボルト通し穴の少なくともいずれかは、周方向に沿った長穴であり、
前記第1及び第2の鉄心部材は、前記第1のボルト通し穴に通されているボルトによって互いに締結されている請求項1又は請求項2に記載の回転電機の回転子。 - 前記第1及び第2の鉄心部材の少なくともいずれかは、本体鉄心ブロックと、前記本体鉄心ブロックの外周部又は内周部に取り付けられている複数の弧状鉄心ブロックとを有する集合鉄心部材になっており、
前記第1及び第2の磁石のうち、前記集合鉄心部材に設けられている磁石は、各前記弧状鉄心ブロックにそれぞれ設けられており、
前記本体鉄心ブロック及び前記弧状鉄心ブロックのうち、一方には第2の凹部が設けられ、他方には前記第1の凸部が前記第1の凹部に係合する方向と同じ方向へ前記第2の凹部に係合する第2の凸部が設けられている請求項1~請求項3のいずれか一項に記載の回転電機の回転子。 - 前記第2の凹部は、前記第2の凸部が前記第2の凹部に係合する方向へ連続的に幅が狭くなっている第2の凹部係合部を有し、
前記第2の凸部は、前記第2の凹部係合部に嵌る第2の凸部係合部を有している請求項4に記載の回転電機の回転子。 - 前記第2の凹部係合部の幅は、前記第2の凹部の深さ方向の底面に向かって連続的に広がっており、
前記第2の凸部係合部の幅は、前記第2の凸部の突出方向端部に向かって連続的に広がっている請求項5に記載の回転電機の回転子。 - 前記弧状鉄心ブロックは、複数の磁性板が積層されて構成されている請求項4~請求項6のいずれか一項に記載の回転電機の回転子。
- 前記本体鉄心ブロックには、複数の貫通穴が第2のボルト通し穴として設けられ、
各前記第2のボルト通し穴の少なくともいずれかは、周方向に沿った長穴であり、
前記弧状鉄心ブロックは、前記第2のボルト通し穴に通されているボルトによって前記本体鉄心ブロックに締結されている請求項4~請求項7のいずれか一項に記載の回転電機の回転子。 - 第1の回転子部材、
第2の回転子部材、及び
回転子ベース
を備え、
前記第1の回転子部材は、第1の鉄心部材と、前記第1の鉄心部材に設けられている第1の磁石群とを有し、
前記第2の回転子部材は、第2の鉄心部材と、前記第2の鉄心部材に設けられている第2の磁石群とを有し、
前記第1及び第2の鉄心部材は、径方向について互いに対向し、かつ軸線方向について前記回転子ベースに固定されており、
前記第1及び第2の磁石群は、径方向について互いに隣接しており、
前記第1の磁石群は、周方向へ並んでいる複数の第1の磁石を有し、
前記第2の磁石群は、周方向へ並んでいる複数の第2の磁石を有し、
互いに隣接する同極の前記第1及び第2の磁石は、周方向へ特定の角度でずれており、
前記第1及び第2の鉄心部材の少なくともいずれかと前記回転子ベースとのうち、一方には第1の凹部が設けられ、他方には前記第1の凹部に周方向について係合する第1の凸部が設けられている回転電機の回転子。 - 前記第1及び第2の鉄心部材の少なくともいずれかには、複数の貫通穴が第1のボルト通し穴として設けられており、
各前記第1のボルト通し穴の少なくともいずれかは、周方向に沿った長穴であり、
前記第1及び第2の鉄心部材の少なくともいずれかは、前記第1のボルト通し穴に通されているボルトによって前記回転子ベースに締結されている請求項9に記載の回転電機の回転子。 - 前記第1の凸部は、前記第1の鉄心部材、前記第2の鉄心部材及び前記回転子ベースのぞれぞれと別部材になっている請求項9又は請求項10に記載の回転電機の回転子。
- 前記第1及び第2の鉄心部材の少なくともいずれかは、周方向へ並んでいる複数の分割鉄心ブロックで構成されている集合鉄心部材になっており、
各前記分割鉄心ブロックには、前記第1の凹部及び前記第1の凸部のいずれかが設けられている請求項9~請求項11のいずれか一項に記載の回転電機の回転子。 - 前記第1の凹部は、前記第1の凸部が前記第1の凹部に係合する方向へ連続的に幅が狭くなっている第1の凹部係合部を有し、
前記第1の凸部は、前記第1の凹部係合部に嵌る第1の凸部係合部を有している請求項1~請求項12のいずれか一項に記載の回転電機の回転子。 - 前記第1の凹部係合部の幅は、前記第1の凹部の深さ方向の底面に向かって連続的に広がっており、
前記第1の凸部係合部の幅は、前記第1の凸部の突出方向端部に向かって連続的に広がっている請求項13に記載の回転電機の回転子。
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