WO2023176199A1 - Rotor et moteur électrique - Google Patents

Rotor et moteur électrique Download PDF

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Publication number
WO2023176199A1
WO2023176199A1 PCT/JP2023/004025 JP2023004025W WO2023176199A1 WO 2023176199 A1 WO2023176199 A1 WO 2023176199A1 JP 2023004025 W JP2023004025 W JP 2023004025W WO 2023176199 A1 WO2023176199 A1 WO 2023176199A1
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WO
WIPO (PCT)
Prior art keywords
rotor
adhesive layer
adhesive
rotor core
permanent magnet
Prior art date
Application number
PCT/JP2023/004025
Other languages
English (en)
Japanese (ja)
Inventor
宏之 吉村
崇弘 大橋
Original Assignee
パナソニックＩｐマネジメント株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by パナソニックＩｐマネジメント株式会社 filed Critical パナソニックＩｐマネジメント株式会社
Publication of WO2023176199A1 publication Critical patent/WO2023176199A1/fr

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Classifications

    • 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
    • H02K1/276—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]

Definitions

  • the present disclosure relates to a rotor and an electric motor, and particularly relates to a rotor including a permanent magnet and an electric motor including a rotor.
  • Patent Document 1 describes a rotor that includes permanent magnets.
  • a magnet embedding hole (magnet placement hole) is formed in the rotor core of the rotor.
  • a permanent magnet is fixed to the magnet embedding hole with an adhesive.
  • the present disclosure has been made in view of the above points, and an object of the present disclosure is to provide a rotor and a motor that can increase the adhesive strength between a permanent magnet and a rotor core.
  • a rotor includes a rotor core, a permanent magnet, an adhesive, and a rotating shaft.
  • the permanent magnet is arranged close to the rotor core.
  • the adhesive is placed between the rotor core and the permanent magnet, and fixes the permanent magnet to the rotor core.
  • the rotation shaft is fixed to the rotor core, and has an axis as the center of rotation.
  • the adhesive has multiple adhesive layers. The plurality of adhesive layers are arranged in a line in a direction in which the axial center of the rotating shaft extends, and each has at least partially opposite edges spaced apart from each other.
  • An electric motor includes the rotor and stator.
  • the adhesive strength between the permanent magnet and the rotor core can be increased.
  • FIG. 1 is a schematic top view of the electric motor according to the first embodiment.
  • FIG. 2 is a perspective view of the rotor of the electric motor according to the first embodiment.
  • FIG. 3 is a partial sectional view of the rotor of the electric motor according to the first embodiment.
  • FIG. 4 is a partial cross-sectional view of the rotor according to the first modification.
  • FIG. 5 is a partial sectional view of a rotor according to a second modification.
  • FIG. 6 is a partial sectional view of a rotor according to a third modification.
  • FIG. 7 is a schematic top view of the electric motor according to the second embodiment.
  • FIG. 8 is a perspective view of the rotor of the electric motor according to the second embodiment.
  • FIG. 9 is a partial sectional view of the rotor of the electric motor according to the second embodiment.
  • FIG. 10 is a partial sectional view of a rotor according to a fourth modification.
  • FIG. 11 is a partial sectional view of a rotor according to a fifth modification.
  • FIG. 12 is a partial sectional view of a rotor according to a sixth modification.
  • FIG. 13 is a schematic diagram of the electric motor and the power source that supplies current to the electric motor according to the first embodiment.
  • the electric motor 1 is an inner rotor type motor.
  • FIG. 1 is a schematic top view of the electric motor 1 according to the first embodiment.
  • FIG. 2 is a perspective view of the rotor 3 of the electric motor 1 according to the first embodiment.
  • FIG. 3 is a partial sectional view of the rotor 3 of the electric motor 1 according to the first embodiment.
  • the electric motor 1 has a stator 2 and a rotor 3.
  • the direction in which the axis 14 (described later) of the rotating shaft 10 (described later) extends is referred to as an axial direction A1
  • the circumferential direction of the rotor 3 is referred to as a circumferential direction C1.
  • a direction along a line segment connecting a point on a plane perpendicular to the axis 14 and an intersection of the plane and the axis 14 is referred to as a radial direction F1.
  • the axial direction A1, the circumferential direction C1, and the radial direction F1 are orthogonal to each other.
  • the stator 2 is a stator that has a stator core 4 and a plurality of (nine in FIG. 1) coil windings 6.
  • the stator core 4 is a laminated core in which a plurality of steel plates are laminated in the thickness direction.
  • the stator core 4 is formed into a substantially cylindrical column shape.
  • the stator core 4 includes an annular core back 7 and a plurality of (nine in FIG. 1) core backs arranged on the inner peripheral surface of the core back 7 at regular intervals along the circumferential direction C1 and extending in the radial direction F1 and toward the axis 14. It has teeth 8.
  • Each coil winding 6 is wound around one corresponding tooth 8.
  • the rotor 3 is an IPM (Interior Permanent Magnet) type rotor in which a permanent magnet is embedded inside the rotor core.
  • the rotor 3 is arranged closer to the axis 14 than the stator 2 in the radial direction F1, and includes a rotor core 9, a rotating shaft 10, and a plurality of permanent magnets 11.
  • FIG. 13 shows a schematic diagram of a power supply 100 that supplies current to the electric motor 1.
  • the electric motor 1 operates as follows.
  • a cable 101 extends from a power supply 100 to the electric motor 1, and current is supplied through a power supply connection part 102. More specifically, three-phase currents having a phase difference of 120 degrees in electrical angle are supplied to the plurality of coil windings 6 through the power supply connection part 102, respectively, to excite the stator 2 and generate a rotating magnetic field. do.
  • This rotating magnetic field interacts with the magnetic field generated by the permanent magnet 11 provided on the rotor 3 to generate rotational torque in the rotor 3, and as a result, the rotor 3 rotates around the axis 14. .
  • the rotor core 9 is a laminated core in which a plurality of steel plates 17 are laminated in the thickness direction.
  • the rotor core 9 has a circular center shaft hole 12 and is formed in a cylindrical shape.
  • a plurality of magnet arrangement holes 13 are formed in the rotor core 9 and arranged in the circumferential direction C1.
  • the opening shape of the magnet arrangement hole 13 is a substantially rectangular parallelepiped.
  • the magnet placement hole 13 penetrates in the axial direction A1, but may have a bottom.
  • the rotating shaft 10 is a cylindrical member and has an axis 14 that is the center of rotation.
  • the rotating shaft 10 is inserted into a central shaft hole 12 of the rotor core 9 and is fixed therein.
  • a plurality of (10 in FIG. 1) permanent magnets 11 are inserted and fixed into the plurality of magnet placement holes 13 of the rotor core 9, respectively.
  • Each permanent magnet 11 has, for example, a rectangular parallelepiped shape.
  • a samarium-cobalt permanent magnet, a neodymium magnet, or the like can be used, and a neodymium magnet is suitable for use in an automobile motor.
  • FIG. 3 is a cross-sectional view of FIG. 2 taken along a plane that passes through the rotor core 9 and the permanent magnets 11 and includes the III-III line segment along the radial direction F1 and is perpendicular to the circumferential direction C1.
  • the rotor 3 has an adhesive 16 for fixing the permanent magnets 11 to the magnet placement holes 13.
  • the adhesive 16 is filled in the gap between the inner surface 25 of the magnet placement hole 13 and the outer surface 26 of the permanent magnet 11.
  • the adhesive 16 is, for example, a thermosetting resin, and specifically may be, for example, an epoxy resin or a silicone resin.
  • the adhesive 16 has a first adhesive layer 31 and a second adhesive layer 32, as shown in FIG. In the axial direction A1, the first adhesive layer 31 is arranged above the second adhesive layer 32 in the paper of FIG. 3, and the second adhesive layer 32 is arranged below the first adhesive layer 31 in the paper of FIG. has been done.
  • the first adhesive layer 31 and the second adhesive layer 32 are each formed on the outer surface 26 of the permanent magnet 11. Note that the first adhesive layer 31 and the second adhesive layer 32 only need to be formed on at least a portion of the outer surface 26 of the permanent magnet 11. For example, each of the first adhesive layer 31 and the second adhesive layer 32 may be formed in an annular shape around the outer surface 26.
  • each of the first adhesive layer 31 and the plurality of second adhesive layers 32 may be divided into a plurality of parts and formed so as to be lined up in the circumferential direction around the outer surface 26.
  • each of the first adhesive layer 31 and the plurality of second adhesive layers 32 may be formed only on one surface of the outer surface 26.
  • the lower edge 33 of the first adhesive layer 31 and the upper edge 34 of the second adhesive layer 32 face each other at a distance over the entire circumference. In other words, the gap 35 exists between the first adhesive layer 31 and the second adhesive layer 32 in the axial direction A1.
  • the possibility of strength saturation can be reduced. This is because the first adhesive layer 31 and the second adhesive layer 32 are shorter in the axial direction A1 than the length at which strength saturation occurs due to stress concentration at the ends. As a result of the above, even if the area where the adhesive 16 is applied is large, the possibility that the adhesive strength per unit area will decrease can be reduced. As a result, even in the rotor core 9 which is long in the axial direction A1, the permanent magnets 11 can be bonded with a strength corresponding to the bonding area.
  • a rotor core 9 having a plurality of magnet placement holes 13 is prepared.
  • the permanent magnets 11 are inserted into each of the plurality of magnet placement holes 13 in the rotor core 9.
  • the permanent magnets 11 are fixed to the rotor core 9 by applying adhesive 16 to the gap between the inner surface 25 of the magnet arrangement hole 13 of the rotor core 9 and the outer surface 26 of the permanent magnet 11.
  • the adhesive 16 is supplied to a predetermined position so that a gap 35 is secured between the first adhesive layer 31 and the second adhesive layer 32 by controlling the viscosity depending on the type and temperature of the adhesive.
  • the wettability of the middle part of the protective film of the permanent magnet 11 is made worse than that of the upper and lower parts, so that the gap 35 is secured between the first adhesive layer 31 and the second adhesive layer 32.
  • the adhesive 16 may be supplied to a predetermined position.
  • the permanent magnet 11 coated with the adhesive 16 in advance may be inserted into the magnet placement hole 13.
  • the rotating shaft 10 is attached to the rotor core 9. Specifically, the rotating shaft 10 is fixed to the central shaft hole 12 of the rotor core 9.
  • FIG. 4 is a partial cross-sectional view of the rotor 3 according to the first modification, and is a diagram similar to FIG. 3.
  • the adhesive 40 is filled in the gap between the inner surface 25 of the magnet placement hole 13 and the outer surface 26 of the permanent magnet 11.
  • the adhesive 40 includes a first adhesive layer 41, a second adhesive layer 42, a third adhesive layer 43, a fourth adhesive layer 44, and a fifth adhesive layer 45.
  • the first adhesive layer 41 to the fifth adhesive layer 45 are arranged in this order from top to bottom in the axial direction A1 in the gap between the inner surface 25 of the magnet arrangement hole 13 and the outer surface 26 of the permanent magnet 11.
  • Each of the first adhesive layer 41 to the fifth adhesive layer 45 is formed around the outer surface 26 of the permanent magnet 11.
  • the upper edge 66 of the fourth adhesive layer 44, the lower edge 67 of the fourth adhesive layer 44, and the upper edge 68 of the fifth adhesive layer 45 are each opposed to each other with a distance between them. In other words, gaps 71, 72, 73, and 74 exist in the axial direction A1 between adjacent adhesive layers. Note that the first to fifth adhesive layers 41 to 45 only need to be formed on at least a portion of the outer surface 26 of the permanent magnet 11.
  • each of the first adhesive layer 41 to the fifth adhesive layer 45 may be formed in an annular shape around the outer surface 26.
  • each of the first adhesive layer 41 to the fifth adhesive layer 45 may be divided into a plurality of parts and arranged circumferentially around the outer surface 26.
  • each of the first adhesive layer 41 to the fifth adhesive layer 45 may be formed only on one surface of the outer surface 26.
  • FIG. 5 is a partial sectional view of the rotor 3 according to the second modification, and is a diagram similar to FIG. 3.
  • the rotor 3 further includes a blocking member 51.
  • the blocking member 51 is a member for separating the edge of the first adhesive layer 31 and the edge of the second adhesive layer 32 by blocking the first adhesive layer 31 and the second adhesive layer 32 from each other.
  • the blocking member 51 has a rectangular cylindrical shape and is located between the inner surface 25 of the magnet arrangement hole 13 and the outer surface 26 of the permanent magnet 11. is placed between. In this way, the blocking member 51 blocks the first adhesive layer 31 and the second adhesive layer 32 from each other.
  • the blocking member 51 is, for example, fitted and fixed to the permanent magnet 11.
  • the blocking member 51 is made of resin or metal, for example, and is provided at an intermediate portion of the outer surface 26 of the permanent magnet 11 in the axial direction A1.
  • the blocking member 51 only needs to correspond to the first adhesive layer 31 and the second adhesive layer 32. That is, the shielding member 51 may be provided in an annular shape around the outer surface 26 in accordance with the configuration of the first adhesive layer 31 and the second adhesive layer 32, or a plurality of shielding members 51 may be arranged circumferentially around the outer surface 26. It may be provided on only one surface of the outer surface 26.
  • the shielding member 51 facilitates positioning of the first adhesive layer 31 and the second adhesive layer 32, so manufacturing of the rotor 3 is simplified.
  • the manufacturing method in which the first adhesive layer 31 and the second adhesive layer 32 are first applied to the permanent magnet 11 and then inserted into the magnet placement hole 13 becomes easier.
  • FIG. 6 is a partial cross-sectional view of the rotor 3 according to the third modification, and is a diagram similar to FIG. 3.
  • the rotor 3 further includes a blocking member 52.
  • the blocking member 52 is a member for separating the edges of the adhesive layers by blocking the plurality of adhesive layers from each other.
  • the blocking member 52 is disposed between the inner surface 25 of the magnet arrangement hole 13 and the outer surface 26 of the permanent magnet 11 and between the lower edge 33 of the first adhesive layer 31 and the upper edge 34 of the second adhesive layer 32. There is. In this way, the blocking member 52 blocks the first adhesive layer 31 and the second adhesive layer 32 from each other.
  • the blocking member 52 is integrated with the rotor core 9. That is, the blocking member 52 is a protrusion that protrudes toward the axial center 14 in the radial direction F1 from the intermediate portion in the axial direction A1 of the inner surface 25 of the magnet arrangement hole 13 of the rotor core 9 of the first embodiment. Note that the blocking member 52 only needs to correspond to the first adhesive layer 31 and the second adhesive layer 32. That is, the shielding member 52 may be formed in an annular shape around the inner surface 25 in accordance with the configuration of the first adhesive layer 31 and the second adhesive layer 32, or may be formed in a plurality of shielding members arranged circumferentially around the inner surface 25. or may be formed only on one surface of the inner surface 25.
  • the shielding member 52 facilitates positioning of the first adhesive layer 31 and the second adhesive layer 32, so manufacturing of the rotor 3 is simplified.
  • FIG. 7 is a schematic top view of an electric motor 1A according to the second embodiment.
  • FIG. 8 is a perspective view of a rotor 3A of a power transmitter 1A according to the second embodiment.
  • FIG. 9 is a partial sectional view of a rotor 3A of a power transmitter 1A according to the second embodiment.
  • the electric motor 1A has a stator 2A and a rotor 3A.
  • the stator 2A is a stator that has a stator core 4A and a plurality of coil windings 6A.
  • the rotor 3A is of the SPM (Surface Permanent Magnet) type in which a plurality of permanent magnets are arranged on the outer peripheral surface of the rotor core.
  • the rotor 3A includes a rotor core 9A, a permanent magnet 11A, and a rotating shaft 10A.
  • the permanent magnet 11A has a cylindrical shape and is provided on the outer peripheral surface 37A of the rotor core 9A.
  • the permanent magnet 11A has a plurality of N poles and S poles located alternately in the circumferential direction C1.
  • FIG. 9 shows a cross-sectional view of FIG. 8 taken along a plane that passes through the rotor core 9A and the permanent magnet 11A, includes the IX-IX line segment along the radial direction F1, and is perpendicular to the circumferential direction C1.
  • the rotor 3A has an adhesive 16A for fixing the permanent magnet 11A to the outer peripheral surface 37A of the rotor core 9A.
  • the adhesive 16A is filled in the gap between the outer peripheral surface 37A of the rotor core 9A and the inner peripheral surface 38A of the permanent magnet 11A.
  • the adhesive 16A has a first adhesive layer 31A and a second adhesive layer 32A.
  • the first adhesive layer 31A and the second adhesive layer 32A are arranged side by side in the axial direction A1, and the first adhesive layer 31A is arranged on the second adhesive layer 32A in the paper of FIG.
  • a second adhesive layer 32A is disposed below the first adhesive layer 31A.
  • the first adhesive layer 31A and the second adhesive layer 32A are each formed continuously or intermittently in the circumferential direction C1 on the outer peripheral surface 37A of the rotor core 9A.
  • the lower edge 33A of the first adhesive layer 31A and the upper edge 34A of the second adhesive layer 32A face each other at a distance over the entire circumference. In other words, a gap 35A in the axial direction A1 exists between the first adhesive layer 31A and the second adhesive layer 32A.
  • the adhesive 16A in the axial direction A1 By dividing the adhesive 16A in the axial direction A1 as described above, strength saturation can be avoided. Thereby, even if the applied area of the adhesive 16A is large, the adhesive strength per unit area does not decrease. As a result, even in the rotor core 9A which is long in the axial direction A1, the permanent magnet 11A can be bonded with a strength corresponding to the bonding area.
  • the permanent magnet 11A may be a plurality of permanent magnets divided in the circumferential direction C1. In that case, the adhesive layers of all the permanent magnets may be divided in the axial direction, or the adhesive layers of some permanent magnets may be divided in the axial direction.
  • FIG. 10 is a partial sectional view of a rotor 3A according to a fourth modification, and is a drawing similar to FIG. 9.
  • the adhesive 40A is filled in the gap between the inner surface 25 of the magnet placement hole 13 and the outer surface 26 of the permanent magnet 11.
  • the adhesive 40A includes a first adhesive layer 41A, a second adhesive layer 42A, a third adhesive layer 43A, a fourth adhesive layer 44A, and a fifth adhesive layer 45A.
  • the first adhesive layer 41A to the fifth adhesive layer 45A are arranged in this order from top to bottom in the axial direction A1 in the gap between the outer peripheral surface 37A of the rotor core 9A and the inner peripheral surface 38A of the permanent magnet 11A.
  • the first adhesive layer 41A to the fifth adhesive layer 45A are each formed continuously or intermittently in the circumferential direction C1 on the outer peripheral surface 37A of the rotor core 9A.
  • FIG. 11 is a partial sectional view of a rotor 3A according to a fifth modification, and is a drawing similar to FIG. 9.
  • the rotor 3A further includes a blocking member 51A.
  • the blocking member 51A is a member for separating the edges of the adhesive layers by blocking the plurality of adhesive layers from each other.
  • the blocking member 51A has a cylindrical shape, and is located between the lower edge 33A of the first adhesive layer 31A and the upper edge 34A of the second adhesive layer 32A in the gap between the outer peripheral surface 37A of the rotor core 9A and the inner peripheral surface 38A of the permanent magnet 11A. is located between. In this way, the blocking member 51A blocks the first adhesive layer 31A and the second adhesive layer 32A.
  • the blocking member 51A is fixed to the permanent magnet 11A.
  • the blocking member 51A is made of resin, for example, and is provided at an intermediate portion in the axial direction A1 of the inner circumferential surface 38A of the permanent magnet 11A.
  • the shielding member 51A facilitates positioning of the first adhesive layer 31A and the second adhesive layer 32A, thereby simplifying the manufacture of the rotor 3A.
  • FIG. 12 is a partial sectional view of a rotor 3A according to a sixth modification, and is a drawing similar to FIG. 9.
  • the rotor 3A further includes a blocking member 52A.
  • the blocking member 52A is a member for separating the edges by blocking the plurality of adhesive layers from each other.
  • the blocking member 52A is located between the lower edge 33A of the first adhesive layer 31A and the upper edge 34A of the second adhesive layer 32A in the gap between the outer peripheral surface 37A of the rotor core 9A and the inner peripheral surface 38A of the permanent magnet 11A. It is located.
  • the blocking member 52A is integrated with the rotor core 9A. That is, the blocking member 52A protrudes toward the axial center 14 in the radial direction F1 from the intermediate portion in the axial direction A1 of the outer peripheral surface 37A of the rotor core 9 of the first embodiment.
  • the shielding member 52A facilitates the positioning of the first adhesive layer 31A and the second adhesive layer 32A, making it easier to manufacture the rotor 3A.
  • the adhesive layers of all the permanent magnets are divided in the axial direction, but only some of the permanent magnets may have adhesive layers divided in the axial direction.
  • the edges of the two adhesive layers faced each other at a distance over the entire circumference, but if some parts of the adhesive layer faced each other at a distance, at least that portion In this case, the same effects as in the first embodiment can be obtained. Therefore, the edges may be partially connected in the circumferential direction.
  • first embodiment and the second embodiment are directed to an inner rotor type electric motor
  • present disclosure can also be applied to an outer rotor type electric motor.
  • the blocking member may be used to realize three or more adhesive layers.
  • the blocking member may be used to realize three or more adhesive layers.
  • the number and type of adhesive layers are not limited.
  • the number, position, and material of the blocking members are not limited.
  • the shape of the magnet placement hole and the magnet are not limited.
  • the magnet arrangement hole extends long in the radial direction when viewed from above, but the magnet arrangement hole may extend substantially in the circumferential direction.
  • the rotor core may be a powder core whose main component is a powder material formed by pressure-molding a powdered magnetic material.
  • the stator (3, 3A) includes a rotor core (9, 9A), a permanent magnet (11, 11A), an adhesive (16, 16A, 40, 40A), and a rotating shaft (10 , 10A).
  • the permanent magnets (11, 11A) are arranged close to the rotor core (9, 9A).
  • the adhesive (16, 16A, 40, 40A) is placed between the rotor core (9, 9A) and the permanent magnet (11, 11A).
  • 11A) is fixed.
  • the rotating shaft (10, 10A) is fixed to the rotor core (9, 9A) and rotates around the shaft center (14).
  • the adhesives (16, 16A, 40, 40A) are arranged in a line in the direction in which the axis (14) of the rotating shaft (10, 10A) extends, and are spaced apart from each other by opposing edges (33, 34). ) at least partially.
  • strength saturation can be avoided by dividing the adhesive (16, 16A, 40, 40A) in the axial direction (A1). Thereby, even if the applied area of the adhesive (16, 16A, 40, 40A) is large, the adhesive strength per unit area does not decrease. As a result, even on rotor cores (9, 9A) that are long in the axial direction (A1), permanent magnets (11, 11A) can be bonded with strength corresponding to the bonding area.
  • the stator (3) according to the second aspect includes a plurality of permanent magnets (11) in the first aspect.
  • the rotor core (9) has a plurality of magnet placement holes (13) arranged in the circumferential direction and corresponding to the plurality of permanent magnets (11).
  • Each of the plurality of permanent magnets (11) is arranged inside a corresponding one of the plurality of magnet arrangement holes (13).
  • the permanent magnet (11) can be bonded to the magnet arrangement hole (13) with a strength that corresponds to the bonding area.
  • the edges (33, 34) of the plurality of adhesive layers (31, 32) face each other at a distance.
  • the permanent magnets (11, 11A) are bonded to the magnet placement holes (13, 13A) with a strength that corresponds to the bonding area. It becomes possible.
  • the rotor (3, 3A) according to the fourth aspect has a plurality of It further includes a blocking member (51, 51A, 52, 52A) disposed between the edges (33, 33A, 34, 34A) of the adhesive layer (31, 31A, 32, 32A).
  • the adhesive layer (31, 31A, 32, 32A) can be easily positioned by the blocking member (51, 51A, 52, 52A), so manufacturing of the rotor (3, 3A) is simplified. .
  • the blocking member (51, 51A) is fixed to the permanent magnet (11, 11A) in the fourth aspect.
  • the adhesive layers (31, 31A, 32, 32A) can be easily positioned with respect to each other by the blocking member (51, 51A), so manufacturing of the rotor (3, 3A) is simplified.
  • the blocking member (52) is integrated with the rotor core (9, 9A) in the fourth aspect.
  • the adhesive layer (31, 31A, 32, 32A) can be easily positioned by the blocking member (52, 52A), so manufacturing of the rotor (3, 3A) is simplified.
  • the rotor (3, 3A) according to the seventh aspect includes three or more adhesive layers (41, 41A, 42, 42A, 43, 43A, 44, 44A, 45, 45A).
  • the permanent magnets (11, 11A) can be bonded with a strength corresponding to the bonding area.
  • the electric motor (1, 1A) according to the eighth aspect includes the rotor (3, 3A) and stator (2, 2A) in any one of the first to seventh aspects.
  • the permanent magnets (11, 11A) can be bonded with a strength corresponding to the bonding area.
  • the adhesive strength between the permanent magnet and the rotor core can be increased. Therefore, the rotor and electric motor of the present disclosure can improve the reliability of the electric motor and are industrially useful.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)

Abstract

L'invention concerne un rotor et un moteur électrique permettant d'augmenter la force d'adhérence entre des aimants permanents et un noyau de rotor. Un rotor (3) comprend un noyau de rotor (9), des aimants permanents (11), un adhésif (16) et un arbre rotatif. L'adhésif (16) est positionné entre le noyau de rotor (9) et les aimants permanents (11) et fixe les aimants permanents (11) au noyau de rotor (9). L'arbre rotatif (10) est fixé au noyau de rotor (9) et tourne autour d'un axe (14). L'adhésif (16) contient des première (31) et seconde (32) couches adhésives. Les première (31) et seconde (32) couches adhésives sont disposées l'une après l'autre dans la direction d'extension de l'axe de l'arbre rotatif. Elles ont un bord inférieur (33) et un bord supérieur (34) à l'opposé l'un de l'autre, une distance les séparant.
PCT/JP2023/004025 2022-03-14 2023-02-07 Rotor et moteur électrique WO2023176199A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2022039421 2022-03-14
JP2022-039421 2022-03-14

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Publication Number Publication Date
WO2023176199A1 true WO2023176199A1 (fr) 2023-09-21

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PCT/JP2023/004025 WO2023176199A1 (fr) 2022-03-14 2023-02-07 Rotor et moteur électrique

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010206882A (ja) * 2009-03-02 2010-09-16 Mitsubishi Electric Corp 電動機及び圧縮機及び空気調和機及び電気掃除機
JP2019140848A (ja) * 2018-02-14 2019-08-22 パナソニックＩｐマネジメント株式会社 回転子及びそれを備えた電動機

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010206882A (ja) * 2009-03-02 2010-09-16 Mitsubishi Electric Corp 電動機及び圧縮機及び空気調和機及び電気掃除機
JP2019140848A (ja) * 2018-02-14 2019-08-22 パナソニックＩｐマネジメント株式会社 回転子及びそれを備えた電動機

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