WO2014054688A1 - 永久磁石埋込型電動機 - Google Patents
永久磁石埋込型電動機 Download PDFInfo
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- WO2014054688A1 WO2014054688A1 PCT/JP2013/076816 JP2013076816W WO2014054688A1 WO 2014054688 A1 WO2014054688 A1 WO 2014054688A1 JP 2013076816 W JP2013076816 W JP 2013076816W WO 2014054688 A1 WO2014054688 A1 WO 2014054688A1
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- magnet
- permanent magnet
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- pair
- tongue
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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
- H02K1/276—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
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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
Definitions
- the present invention relates to a permanent magnet embedded type electric motor.
- magnet insertion holes corresponding to the number of poles are provided in the axial direction in advance in a rotor core formed by laminating and fixing a plurality of electromagnetic steel plates punched into a predetermined shape. Permanent magnets are inserted into the corresponding magnet insertion holes during assembly.
- the magnet during operation of the motor is subject to a change in attractive force between the teeth tip and acceleration / deceleration, the magnet tries to move left and right in the circumferential direction in the magnet insertion hole. If the magnet moves greatly in the magnet insertion hole, it will cause vibration and noise, and it will also cause wear, cracking and chipping of the magnet. In many cases, a step or a protrusion is provided.
- Patent Document 1 discloses a method for fixing a permanent magnet.
- protrusions are provided near the left and right ends of the magnet insertion hole, a permanent magnet is disposed between the pair of protrusions, and the elastic force of the pair of protrusions acts on the permanent magnet by the pair of protrusions.
- the permanent magnet was fixed so as to sandwich the permanent magnet.
- the present invention provides a permanent magnet embedded electric motor that can reduce the movement of a magnet and reduce the risk of noise, magnet wear, cracking, and chipping without relying on steps or protrusions near the left and right ends of the magnet insertion hole.
- the purpose is to provide.
- the present invention provides an embedded permanent magnet electric motor including a rotor that is rotatably provided and a stator that is provided to face the rotor, and the rotor includes a rotor iron core.
- a shaft that supports the rotor core, a plurality of permanent magnets embedded in the rotor core, and a pair of magnet fixing members provided in the rotor core, wherein a plurality of magnets are inserted into the rotor core Holes are provided, corresponding one of the permanent magnets is inserted into the corresponding one of the magnet insertion holes, and a plurality of pairs of tongues are provided on one surface of each of the magnet fixing members.
- each of the magnet fixing members the corresponding pair of tongues are inserted into the corresponding one of the magnet insertion holes, whereby each of the permanent magnets is rotated in the direction of the rotation axis.
- the opposite end faces in the circumferential direction of the rotor are sandwiched by the corresponding pair of tongues, and the distance between the pair of tongues corresponds to the corresponding position at a position away from the root position.
- a distance Dmin that is narrower than the width L in the rotor circumferential direction of the permanent magnet is included, and the distance Da between the tip positions of the pair of tongue-shaped portions is the same as that of the corresponding permanent magnet.
- the permanent magnet In a state before being sandwiched, the permanent magnet is wider than the width L in the rotor circumferential direction. In a state where the permanent magnet is inserted between the pair of tongues until the permanent magnet abuts against the magnet fixing member, between the base positions of the pair of tongues and the permanent magnet A gap may be formed.
- the permanent magnet and the magnet fixing member are assembled to the rotor iron core, a part of the tongue-shaped portion comes into contact with a hole forming surface that forms the magnet insertion hole in the rotor iron core, and the other in the tongue-shaped portion. A part of may be in contact with the permanent magnet.
- the tongue-like portion contacts the permanent magnet without contacting the hole forming surface forming the magnet insertion hole in the rotor core. You may do it.
- the plurality of tongue portions or the entire magnet fixing members may be formed by resin molding.
- the movement of the magnet can be reduced without depending on the steps or protrusions near the left and right ends of the magnet insertion hole, and the risk of noise, magnet wear, cracking and chipping can be reduced. it can.
- FIG. 3 is a cross-sectional view taken along the line ZZ in FIG. 2. It is a cross-sectional view of a rotor.
- FIG. 5 is a cross-sectional view taken along line YY in FIG. 4. In FIG. 3, it is a figure which shows the state in which the magnet was inserted between a pair of tongue-shaped parts until it contact
- FIG. 4 it is a figure which expands and shows the vicinity of a tongue-shaped part. It is a figure which shows the modification example of FIG.
- FIG. 10 is a diagram similar to FIG. 9 regarding the second embodiment. It is a figure of Embodiment 3 related to Embodiment 3. It is a figure explaining material picking in the case of forming a tongue-like part from sheet metal processing and bending.
- FIG. 1 is a longitudinal sectional view showing a schematic configuration of a permanent magnet embedded electric motor according to Embodiment 1.
- the permanent magnet embedded electric motor according to the present embodiment includes a rotor 1, a stator 2, a frame 3, and a bracket 4.
- the rotor 1 includes a rotor iron core 5, a shaft 6, a plurality of rare earth magnets (permanent magnets) 7, and a pair of upper and lower magnet fixing members 8.
- the rotor core 5 is formed, for example, by laminating and fixing a plurality of electromagnetic steel plates punched into a predetermined shape.
- the shape of the rotor core 5 is, for example, a substantially annular shape when viewed in the direction of the rotation axis.
- the rotor iron core 5 has a plurality of magnet insertion holes 9 provided in the portion near the outer periphery of the rotor core 5 by the number of poles and arranged in the circumferential direction at substantially equal intervals, for example.
- Each magnet insertion hole 9 extends in the direction of the rotation axis, and opens on both end surfaces of the rotor core 5 in the direction of the rotation axis.
- a rare earth magnet 7 is inserted into each magnet insertion hole 9.
- magnet fixing members 8 are attached to both end surfaces in the rotation axis direction of the rotor core 5.
- the pair of magnet fixing members 8 at least partially cover the openings of the plurality of magnet insertion holes 9 on both end faces of the rotor core 5 and prevent the rare earth magnet 7 from moving greatly in the magnet insertion holes 9. ing.
- the means for attaching the magnet fixing member 8 to the end surface of the rotor core 5 is not shown, for example, welding, bonding, fastening using a bolt or rivet with a through hole, press fitting with an inlay portion, and the like are mentioned. be able to.
- the shaft 6 is fitted in the shaft fitting hole provided in the center of the rotor core 5.
- the shaft 6 extends along the rotational axis direction of the rotor core 5, and one end side thereof is rotatably supported by the frame 3 via the bearing 10 and the other end side thereof is supported by the bracket 4 via the bearing 11.
- a wave washer 12 for applying a preload is disposed on the bearing surface of the bearing 10.
- the shaft 6 has a circular cross section, for example, and in this case, the shaft fitting hole is also formed in a circular shape.
- the stator 2 includes a stator iron core 13 and a winding 14.
- the stator core 13 is formed, for example, by laminating and fixing a plurality of electromagnetic steel plates punched into a predetermined shape.
- the shape of the stator core 13 is, for example, a substantially annular shape when viewed in the direction of the rotation axis.
- the stator iron core 13 is formed with a plurality of teeth (not shown) positioned at substantially equal intervals in the circumferential direction, for example, at a portion closer to the inner circumference.
- a winding 14 is wound around these teeth via an insulator (not shown).
- the stator 2 is fixed to the inside of the frame 3 by a method such as shrink fitting, and is installed so as to face the rotor 1 with a predetermined gap 30 therebetween.
- the frame 3 supports one end side of the rotor 1 via the bearing 10 and accommodates the stator 2.
- the frame 3 has, for example, a substantially cylindrical shape, and one end in the axial direction is opened to form a bowl shape, and the other end is provided with a bottom.
- the bracket 4 supports the other end side of the rotor 1 via the bearing 11.
- the bracket 4 has, for example, a substantially cylindrical shape when viewed in the direction of the rotation axis. One end in the direction of the rotation axis is opened to form a bowl shape, and the other end has a hole for projecting the output end of the shaft 6. Is provided.
- the bracket 4 and the frame 3 are connected to each other by fastening means (not shown) such as a screw with the hook-shaped portions formed on each of the bracket 4 and the frame 3 in contact with each other.
- the other end of the rotor 1 supported by the bearing 11 in the bracket 4 is a load side that bears input and output of torque to and from the motor.
- FIG. 1 is a plan view of the magnet fixing member alone before being assembled to the rotor
- FIG. 3 is a sectional view taken along the line ZZ in FIG. 2
- FIG. 4 is a transverse sectional view of the rotor
- FIG. It is sectional drawing regarding a Y line.
- a cross section (part) of the rare earth magnet is illustrated near the tongue-like portion for easy understanding of the dimensional relationship.
- Each magnet fixing member 8 has a circular plate shape and has an outer diameter that is the same as or slightly smaller than the outer periphery of the rotor 1, for example.
- a shaft insertion hole 15 is formed at the center of each magnet fixing member 8.
- a plurality of pairs of tongues 16a and 16b made of a nonmagnetic material extending toward the magnet insertion hole 9 are provided on one surface of each magnet fixing member 8 during assembly.
- the plurality of pairs of tongue-shaped portions 16a and 16b rise from one surface of the corresponding magnet fixing member 8 substantially perpendicularly (substantially in the direction of the rotation axis) to the one surface.
- the pair of tongues 16a and 16b correspond to one pole.
- each of the tongue portions 16a and 16b is formed to have a rectangular cross section when viewed in a cross section in which the rotation axis of the rotor is a perpendicular line.
- each of the pair of tongues 16a and 16b abuts on both end surfaces of the corresponding rare earth magnet 7 in the circumferential direction of the rotor, and the pair of tongues 16a and 16b causes the corresponding rare earth magnet 7 to move. It is formed so as to obtain a state of being sandwiched in the rotor circumferential direction.
- the distance between the pair of tongues 16a and 16b in each pair is as follows.
- the base position 41 with respect to the plate surface has the same or wider distance as the left-right width L of the rare earth magnet 7 (the width that is the distance between both end faces in the rotor circumferential direction), and rises away from the base position 41 in a direction away from the plate surface.
- the gripping position 43 has an interval Dmin slightly narrower than the left-right width L of the rare earth magnet 7 before the rare earth magnet 7 is sandwiched. That is, the pair of tongue portions 16a and 16b includes a position where the distance between them is Dmin ⁇ L.
- FIG. 6 is a view showing a state where the magnet is inserted between the pair of tongues until it hits the magnet fixing member in FIG.
- Each of the corners 41a on the magnet side of the base position 41 in the pair of tongues 16a and 16b is formed in an R shape. Further, as described above, the distance between the pair of tongue portions 16 a and 16 b is narrowed from the pair of root positions 41 toward the pair of gripping positions 43. Therefore, as shown in FIG. 6, in a state where the rare earth magnet 7 is inserted between the pair of tongue portions 16 a and 16 b until the end face of the rare earth magnet 7 abuts against the magnet fixing member 8, A gap 47 is formed between each of the root positions 41 of the shape portions 16 a and 16 b and the rare earth magnet 7.
- FIG. 7 is a contour diagram showing a demagnetization region when a step 117 is provided in the vicinity of the left and right ends of the magnet insertion hole 109 of the rotor core 105 as a comparative example, and FIG. 8 relates to the first embodiment. It is a contour figure which shows the demagnetization area
- the magnetization direction of the rare earth magnet is the thickness direction of the magnet (the direction from one long side to the other long side in the cross-sectional view).
- 7 and 8 show the results of electromagnetic field analysis in which conditions other than the shape of the magnet insertion hole are set to be the same, and the darker the black, the greater the demagnetization factor at that portion.
- FIG. 8 in which no step is provided near the left and right ends of the magnet insertion hole 9 is provided with a step 117 near the left and right ends of the magnet insertion hole 109. It can be seen that the left and right end portions of the rare earth magnet 7 are more difficult to demagnetize.
- the magnetic flux generated by the current flowing in the winding 14 flows in the circumferential direction around the outer peripheral surface of the rotor core, but is selectively used when the distance between the edges of the magnet insertion holes is short when crossing the air portion (flux barrier) 18 between the poles. A lot flows.
- the relationship between the portions indicated by reference numerals G1 and G2 shown in the figure is G1 ⁇ G2 depending on the presence or absence of the step 117.
- the step 117 When the step 117 is provided, the end portion of the rare earth magnet 7 is magnetized in the magnetization direction ( The magnetic flux traversing against the magnet thickness direction) increases, and demagnetization is likely to occur.
- the permanent magnet is a rare earth magnet, but the same effect can be obtained with other types of magnets.
- a ferrite magnet it is different from a rare earth magnet only in that it tends to cause irreversible demagnetization when exposed to a strong demagnetizing field at a low temperature. If the present invention is applied, the same effect can be obtained in the case of a ferrite magnet. Obtainable.
- FIG. 9 is an enlarged view showing the vicinity of the tongue-like portion in FIG.
- the rare earth magnet 7 and the magnet fixing member 8 are assembled to the rotor core 5
- a part of each pair of tongues 16 a, 16 b comes into contact with the hole forming surface that forms the magnet insertion hole 9 in the rotor core 5.
- the other parts of the tongue-like portions 16 a and 16 b abut against the rare earth magnet 7.
- one surface of the tongue-like portions 16 a and 16 b having a rectangular cross section as described above has a hole forming surface 5 a that forms the radially outer side of the magnet insertion hole 9 in the rotor core 5.
- FIG. 10 shows a modification example of FIG.
- one surface of the tongue portions 16 a ′ and 16 b ′ is in contact with the hole forming surface 5 b that forms the radially inner side of the magnet insertion hole 9 in the rotor iron core 5, and the tongue portions 16 a ′ and 16 b.
- the relative position of the magnet fixing member 8 with respect to the edge of the magnet insertion hole 9 is determined, so that the relative positioning of the rare earth magnet 7 with respect to the magnet insertion hole 9 can be easily performed.
- the relative position in the rotor circumferential direction with respect to the magnet insertion hole 9 and the rare earth magnet 7 is extremely important. For example, when the rare earth magnet 7 is shifted to the right side in the magnet insertion hole 9, the right end portion of the rare earth magnet 7 and the right end edge of the magnet insertion hole 9 approach each other, so that the demagnetization resistance is reduced. There is.
- the pair of tongue-shaped portions are positioned in the rare earth magnet, and further, the tongue-shaped portions are positioned in the hole forming surface of the rotor core. Can be easily positioned at the center of the slab, and the problem that the demagnetization resistance on one side as described above is reduced can be avoided.
- the rare earth magnet 7, the magnet insertion hole 9, the air portion 18 described later, and the pair of tongue-like portions 16a and 16b have a magnetic pole center line as viewed in FIGS. The line is symmetrical with respect to the reference.
- the non-magnetic material of the magnet fixing member that is separate from the rotor core from both sides in the rotation axis direction of the rotor core. Since the permanent magnet is held down by the tongue-shaped part of the magnet, the movement of the magnet can be reduced without relying on steps or protrusions near the left and right ends of the magnet insertion hole, and noise and magnets caused by the large movement of the magnet The risk of wear, cracking and chipping can be reduced. That is, it is possible to reduce the risk of noise and magnet wear, cracking, and chipping while making it difficult to demagnetize the left and right ends of the permanent magnet.
- FIG. 11 is a diagram of the same mode as FIG. 9 regarding the second embodiment.
- the second embodiment is the same as the first embodiment except for the parts described below.
- each pair of tongues 56 a and 56 b are holes that form the magnet insertion holes 9. It is in contact with the rare earth magnet 7 without being in contact with the forming surface.
- the magnet fixing member is inserted from both end faces in the rotation axis direction to grip the two side faces in the width direction of the rare earth magnet.
- the distance between the tongue-shaped portion and the edge of the magnet insertion hole is sufficiently secured, and the tongue-shaped portion is not caught, so that the assembly is easy and the productivity is excellent.
- the magnet fixing member is made of a material that can conduct electricity, such as a steel plate
- the laminated steel plates are electrically connected to each other when the tongue of the magnet fixing member abuts the edge of the magnet insertion hole.
- the tongue-shaped portion is secured a sufficient distance from the edge of the magnet insertion hole, so that such a problem can be prevented in advance.
- FIG. 12 is a view of the same mode as FIG.
- the third embodiment is the same as the first or second embodiment except for the parts described below.
- a pair of tongue-like portions 216a and 216b provided in each magnet fixing member 8 has a root position 41 and a gripping position 43 having the same intervals as those of the tongue-like portions 16a and 16b.
- the tip positions 245 of the tongues 216a and 216b have a distance Da wider than the left-right width L of the rare earth magnet 7. That is, the distance Da between the tip positions 245 of the tongue portions 216a and 216b and the left and right width L of the rare earth magnet 7 are set so as to satisfy the relationship of Da> L.
- the following advantages are obtained in addition to the advantages in the first or second embodiment described above. That is, when the rare earth magnet 7 enters between the pair of tongue portions 216a and 216b, the rare earth magnet 7 is smoothly arranged between the pair of tongue portions 216a and 216b due to the interval set at the tip position 245 described above. Is done. For this reason, the rare earth magnet 7 and the magnet fixing member 8 can be easily assembled.
- the corners inside the tips of the tongue portions 216a and 216b are used as a method of expanding the tip portions of the tongue portions 216a and 216b. There are also modes such as a chamfered shape or an R shape.
- Embodiment 4 FIG. Next, a fourth embodiment of the present invention will be described.
- the fourth embodiment is characterized in that a plurality of tongue-like portions or the entire magnet fixing members are formed by resin molding.
- description will be made on the assumption that the feature of the fourth embodiment is applied to the structure of the first embodiment.
- the fourth embodiment is not limited to this, and the second or third embodiment is not limited thereto. In this configuration, resin molding can be applied.
- Permanent magnet embedded motors are made of a non-magnetic material called end plates on both axial ends of the rotor core in order to prevent the rare earth magnets from coming off in the axial direction and to prevent scattering of the fragments when cracks or chips occur. It can be assumed that a metal plate is installed to close the opening of the magnet insertion hole. Therefore, as the magnet fixing member 8 in the first to third embodiments, a method of forming the tongue portions 16a and 16b by processing the end plate of such a metal plate may be considered. The following circumstances arise: FIG. 13 is a diagram for explaining material removal when the tongue-like portion is formed by sheet metal processing and bending processing.
- the tongue 16b for pressing the right end surface of the rare earth magnet 7 of a certain pole is in the vicinity of the pole, the tongue 16a for pressing the left end surface of the rare earth magnet 7 of the next pole and the material Get in touch.
- the tongue 16b needs to be formed by bending the material 19 on the left side.
- the left and right end portions of the rare earth magnet 7 can be gripped, but a part of the axial end surface of the rare earth magnet 7 is exposed. Therefore, if the rare earth magnet 7 is cracked or chipped due to some cause or accident, the role of preventing the scattering of the fragments is slightly reduced.
- the above-mentioned problem is solved without incurring manufacturing costs by forming the tongue portions 16a, 16b or the entire magnet fixing member 8 by resin molding.
- the pair of magnet fixing members 8 can almost completely cover the openings of the plurality of magnet insertion holes 9 on both end surfaces of the rotor core 5.
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Abstract
Description
前記永久磁石が前記磁石固定部材に突き当たるまで、該永久磁石が前記一対の舌状部の間に差し込まれた状態では、該一対の舌状部の付け根位置のそれぞれと前記永久磁石との間に、隙間が形成されるようにしてもよい。
前記永久磁石及び前記磁石固定部材を前記ロータ鉄心に組み付けたとき、前記舌状部における一部は、前記ロータ鉄心において前記磁石挿入穴を形成する穴形成面と当接し、前記舌状部における他の一部は、前記永久磁石と当接するようにしてもよい。あるいは、前記永久磁石及び前記磁石固定部材を前記ロータ鉄心に組み付けたとき、前記舌状部は、前記ロータ鉄心において前記磁石挿入穴を形成する穴形成面と当接することなく前記永久磁石と当接するようにしてもよい。
前記複数の舌状部、又は、それぞれの前記磁石固定部材全体が、樹脂成型によって形成されていてもよい。
図1は、実施の形態1に係る永久磁石埋込型電動機の概略構成を示す縦断面図である。本実施の形態に係る永久磁石埋込型電動機は、ロータ1と、ステータ2と、フレーム3と、ブラケット4とを備えている。
次に、図11に基づいて、本発明の実施の形態2について説明する。図11は、実施の形態2に関する、図9と同態様の図である。なお、本実施の形態2は、以下に説明する部分を除いては、上記実施の形態1と同様であるものとする。図11に示されるように、本実施の形態では、希土類磁石7及び磁石固定部材8をロータ鉄心5に組み付けたとき、各対の舌状部56a、56bは、磁石挿入穴9を形成する穴形成面と当接することなく希土類磁石7と当接している。
次に、図12に基づいて、本発明の実施の形態3について説明する。図12は、実施の形態3に関する、図3と同態様の図である。なお、本実施の形態3は、以下に説明する部分を除いては、上記実施の形態1又は2と同様であるものとする。
次に、本発明の実施の形態4について説明する。本実施の形態4は、複数の舌状部、又は、それぞれの磁石固定部材全体を、樹脂成型によって形成することを特徴とする。図示例では、上記実施の形態1の構造に、本実施の形態4の特徴を適用したものとして説明するが、本実施の形態4は、これには限定されず、上記実施の形態2又は3の構成において樹脂成型を適用して実施することもできる。
Claims (5)
- 回転可能に設けられたロータと、前記ロータと対向して設けられたステータとを備える永久磁石埋込型電動機であって、
前記ロータは、ロータ鉄心と、前記ロータ鉄心を支持するシャフトと、前記ロータ鉄心に埋め込まれた複数の永久磁石と、前記ロータ鉄心の回転軸方向でいう両端面に設けられた一対の磁石固定部材とを含み、
前記ロータ鉄心には、複数の磁石挿入穴が設けられており、
対応する一つの前記永久磁石が、対応する一つの前記磁石挿入穴に挿入されており、
前記磁石固定部材それぞれの一面には、複数対の舌状部が設けられており、
それぞれの前記磁石固定部材において、対応する一対の前記舌状部は、対応する一つの前記磁石挿入穴に挿入されており、それにより、前記永久磁石それぞれは、回転軸方向でいう両側それぞれにおいて、対応する一対の前記舌状部により、ロータ周方向でいう両端面を挟まれており、
前記一対の舌状部の間隔には、付け根位置から離れた位置において、対応する前記永久磁石を挟む前の状態で、当該永久磁石におけるロータ周方向の幅Lよりも狭い間隔Dminが含まれており、
前記一対の舌状部の先端位置の間隔Daは、対応する前記永久磁石を挟む前の状態で、前記永久磁石におけるロータ周方向の幅Lよりも広い、
永久磁石埋込型電動機。 - 前記永久磁石が前記磁石固定部材に突き当たるまで、該永久磁石が前記一対の舌状部の間に差し込まれた状態では、該一対の舌状部の付け根位置のそれぞれと前記永久磁石との間に、隙間が形成される、
請求項1の永久磁石埋込型電動機。 - 前記永久磁石及び前記磁石固定部材を前記ロータ鉄心に組み付けたとき、前記舌状部における一部は、前記ロータ鉄心において前記磁石挿入穴を形成する穴形成面と当接し、前記舌状部における他の一部は、前記永久磁石と当接する、
請求項1又は2の永久磁石埋込型電動機。 - 前記永久磁石及び前記磁石固定部材を前記ロータ鉄心に組み付けたとき、前記舌状部は、前記ロータ鉄心において前記磁石挿入穴を形成する穴形成面と当接することなく前記永久磁石と当接する、
請求項1又は2の永久磁石埋込型電動機。 - 前記複数の舌状部、又は、それぞれの前記磁石固定部材全体が、樹脂成型によって形成されている、
請求項1~4の何れか一項の永久磁石埋込型電動機。
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1505538.7A GB2520657B (en) | 2012-10-04 | 2013-10-02 | Electric motor having embedded permanent magnets |
KR1020157011091A KR101699190B1 (ko) | 2012-10-04 | 2013-10-02 | 영구자석 매입형 전동기 |
US14/431,077 US9762098B2 (en) | 2012-10-04 | 2013-10-02 | Electric motor having embedded permanent magnets |
CN201380051974.6A CN104704714B (zh) | 2012-10-04 | 2013-10-02 | 永磁体埋入型电动机 |
JP2014539781A JP5976122B2 (ja) | 2012-10-04 | 2013-10-02 | 永久磁石埋込型電動機 |
DE112013004896.5T DE112013004896T5 (de) | 2012-10-04 | 2013-10-02 | Elektrischer Motor aufweisend eingebettete Permanentmagneten |
CN201320713764.6U CN203589986U (zh) | 2012-10-04 | 2013-10-08 | 永磁体埋入型电动机 |
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JP (1) | JP5976122B2 (ja) |
KR (1) | KR101699190B1 (ja) |
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DE (1) | DE112013004896T5 (ja) |
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JP2017184375A (ja) * | 2016-03-29 | 2017-10-05 | トヨタ自動車株式会社 | 回転電機のロータ |
WO2018180634A1 (ja) * | 2017-03-31 | 2018-10-04 | 日本電産サーボ株式会社 | モータ |
WO2023286125A1 (ja) * | 2021-07-12 | 2023-01-19 | 三菱電機株式会社 | 回転子、電動機、圧縮機及び冷凍サイクル装置 |
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WO2014068655A1 (ja) * | 2012-10-30 | 2014-05-08 | 三菱電機株式会社 | 永久磁石埋込型電動機及びそれを備えた冷凍空調装置 |
GB201403555D0 (en) * | 2014-02-28 | 2014-04-16 | Of America Asrepresented By The Sec Dep Of Health And Human | Interior permanent magnet motor and rotor structure therefore |
WO2017105147A1 (ko) * | 2015-12-18 | 2017-06-22 | 한온시스템 주식회사 | 영구자석 매립형 전동기를 위한 로터 및 그를 이용한 전동기 |
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JPWO2020208988A1 (ja) * | 2019-04-11 | 2020-10-15 | ||
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- 2013-10-02 US US14/431,077 patent/US9762098B2/en active Active
- 2013-10-02 DE DE112013004896.5T patent/DE112013004896T5/de active Pending
- 2013-10-02 GB GB1505538.7A patent/GB2520657B/en active Active
- 2013-10-02 WO PCT/JP2013/076816 patent/WO2014054688A1/ja active Application Filing
- 2013-10-02 KR KR1020157011091A patent/KR101699190B1/ko active IP Right Grant
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Also Published As
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CN203589986U (zh) | 2014-05-07 |
JPWO2014054688A1 (ja) | 2016-08-25 |
GB2520657B (en) | 2020-05-20 |
CN104704714A (zh) | 2015-06-10 |
CN104704714B (zh) | 2018-02-09 |
GB2520657A (en) | 2015-05-27 |
GB201505538D0 (en) | 2015-05-13 |
JP5976122B2 (ja) | 2016-08-23 |
WO2014054150A1 (ja) | 2014-04-10 |
US9762098B2 (en) | 2017-09-12 |
DE112013004896T5 (de) | 2015-06-18 |
KR20150066550A (ko) | 2015-06-16 |
US20150236558A1 (en) | 2015-08-20 |
KR101699190B1 (ko) | 2017-01-23 |
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