WO2018016496A1 - 二軸一体型モータ - Google Patents
二軸一体型モータ Download PDFInfo
- Publication number
- WO2018016496A1 WO2018016496A1 PCT/JP2017/025989 JP2017025989W WO2018016496A1 WO 2018016496 A1 WO2018016496 A1 WO 2018016496A1 JP 2017025989 W JP2017025989 W JP 2017025989W WO 2018016496 A1 WO2018016496 A1 WO 2018016496A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- rotor
- detection unit
- shaft rotor
- outer shaft
- inner shaft
- Prior art date
Links
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K16/00—Machines with more than one rotor or stator
- H02K16/02—Machines with one stator and two or more rotors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K16/00—Machines with more than one rotor or stator
-
- 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
- H02K1/12—Stationary parts of the magnetic circuit
-
- 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
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/14—Stator cores with salient poles
- H02K1/141—Stator cores with salient poles consisting of C-shaped cores
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/01—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for shielding from electromagnetic fields, i.e. structural association with shields
- H02K11/014—Shields associated with stationary parts, e.g. stator cores
- H02K11/0141—Shields associated with casings, enclosures or brackets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
- H02K11/21—Devices for sensing speed or position, or actuated thereby
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
- H02K11/21—Devices for sensing speed or position, or actuated thereby
- H02K11/225—Detecting coils
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
- H02K21/14—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
- H02K21/22—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating around the armatures, e.g. flywheel magnetos
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K24/00—Machines adapted for the instantaneous transmission or reception of the angular displacement of rotating parts, e.g. synchro, selsyn
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/003—Couplings; Details of shafts
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/08—Structural association with bearings
- H02K7/085—Structural association with bearings radially supporting the rotary shaft at only one end of the rotor
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/08—Structural association with bearings
- H02K7/086—Structural association with bearings radially supporting the rotor around a fixed spindle; radially supporting the rotor directly
- H02K7/088—Structural association with bearings radially supporting the rotor around a fixed spindle; radially supporting the rotor directly radially supporting the rotor directly
Definitions
- the present invention relates to a two-axis integrated motor.
- Patent Document 1 A so-called two-axis integrated motor having two rotors that are independently rotatable is known (for example, Patent Document 1).
- the motor may be provided with a detection unit for detecting the rotation angle of the rotor.
- the detection unit is individually provided for each of the two rotors.
- centering is performed so that the rotation axis direction to be detected by the detection unit is aligned with the rotation axis direction of the rotor in order to further increase the detection accuracy of the rotation angle by the detection unit.
- gap adjustment for adjusting the rotation angle of the rotor detected as 0 degrees is performed.
- a two-shaft integrated motor of the present invention includes an inner shaft rotor and an outer shaft rotor that are rotatably provided and have the same rotation axis direction, and an output shaft of the inner shaft rotor. And a two-axis integrated motor in which an output shaft of the outer shaft rotor is positioned on one end side in the rotation shaft direction, and a first detection unit that detects a rotation angle of the inner shaft rotor and a rotation angle of the outer shaft rotor A detection unit having a second detection unit for detecting the first rotation, a bearing having a first bearing that rotates in conjunction with the inner shaft rotor, a second bearing that rotates in conjunction with the outer shaft rotor, and the inner shaft rotor A stator core portion having a first core that is a stator core of the outer shaft and a second core that is a stator core of the outer shaft rotor, and a base to which the detection portion, the bearing portion, and the stator core portion are attached in order
- the detection unit is located on one end side of the bearing unit and the stator core unit, that is, on the output shaft side of the inner shaft rotor and the outer shaft rotor, the first detection unit and the second detection unit are centered and the inner shaft.
- the gap adjustment of the rotation angle detected by each of the rotor and the outer shaft rotor as 0 degrees can be performed by the output shaft of the two-shaft integrated motor. Therefore, since the influence of physical shielding due to the arrangement of the bearing portion and the stator core portion can be suppressed when accessing the detection portion in the centering and gap adjustment performed on the output shaft side, the rotation angle of the two rotors can be reduced.
- the detection accuracy of the detection unit to be detected can be more easily ensured.
- the bearing portion is located between the detection portion and the stator core portion, the detection portion and the stator core portion can be separated, and the magnetic influence from the stator core portion on the detection portion can be further reduced.
- the magnet and the first core provided in the inner shaft rotor have an axial length longer than that of the magnet and the second core provided in the outer shaft rotor.
- the position of the first detection unit in the rotation axis direction and the position of the second detection unit in the rotation axis direction are the same.
- the shaft length of the two-axis integrated motor can be made more compact.
- one of the first detection unit and the second detection unit does not shield the other in the direction of the rotation axis, the detection accuracy of the detection unit for detecting the rotation angle of the two rotors can be more easily ensured. Can do.
- the position in the rotation axis direction of the end portion on the one end side of the first bearing and the position in the rotation axis direction of the end portion on the one end side of the second bearing are the same.
- the shaft length of the two-axis integrated motor can be made more compact.
- the inner shaft rotor, the stator core portion, and the outer shaft rotor are arranged in this order from the rotating shaft toward the outside in the radial direction.
- the diameter of the two-shaft integrated motor can be made more compact.
- the first detection unit is fixed to the inner shaft rotor and rotates together with the inner shaft rotor, and the first detection unit is fixed to the base and detects a rotation angle of the first rotation unit.
- the second detection unit is fixed to the outer shaft rotor and rotates together with the outer shaft rotor; and the rotation angle of the second rotation unit fixed to the base.
- the diameter of the two-axis integrated motor can be made more compact. .
- a cover that covers the first detection unit and the second detection unit is provided on the one end side with respect to the first detection unit and the second detection unit.
- the detection unit can be protected by providing a cover after the centering and the gap adjustment are completed.
- the work related to ensuring the detection accuracy of the detection unit for detecting the rotation angle of the rotor can be performed more easily.
- FIG. 1 is a cross-sectional view showing the main configuration of the two-axis integrated motor according to the first embodiment.
- FIG. 2 is a schematic diagram illustrating an example of the positional relationship between the first rotor yoke, the base with the cover attached, and the second rotor yoke.
- FIG. 3 is a diagram illustrating an example of a main configuration (stator core portion) of the two-axis integrated motor according to the second embodiment.
- FIG. 4 is a diagram illustrating an example of a specific configuration of the two-axis integrated motor.
- FIG. 5 is a diagram illustrating an example of a specific shape of a non-magnetic material and an example of a shape different from that in FIG. FIG.
- FIG. 6 is a diagram illustrating an example of a specific shape of a nonmagnetic material and a shape different from that in FIG.
- FIG. 7 is a diagram illustrating an example of a specific shape of a non-magnetic material and an example of a shape different from that in FIG.
- FIG. 8 is a diagram illustrating an example of a specific structure of the stator (stator) according to the second embodiment.
- FIG. 9 is a diagram illustrating a laminated structure of electromagnetic steel sheet layers included in the outer shaft motor core according to the second embodiment.
- FIG. 10 is a diagram illustrating one electromagnetic steel plate according to the second embodiment.
- FIG. 11 is a diagram illustrating one of two phases of the arrangement of a plurality of electromagnetic steel sheets in one electromagnetic steel sheet layer.
- FIG. 12 is a diagram showing the other of the two phases of the arrangement of the plurality of electromagnetic steel sheets in one electromagnetic steel sheet layer.
- FIG. 13 is a diagram illustrating an example in which electromagnetic steel sheet layers having the same phase are successively stacked.
- FIG. 14 is a diagram showing one of the two phases of the arrangement of a plurality of electromagnetic steel sheets in one electromagnetic steel sheet layer.
- FIG. 15 is a diagram showing the other of the two phases of the arrangement of a plurality of electromagnetic steel sheets in one electromagnetic steel sheet layer.
- FIG. 1 is a cross-sectional view illustrating a main configuration of a two-axis integrated motor 1 according to the first embodiment.
- the biaxially integrated motor 1 includes an inner shaft rotor 110 and an outer shaft rotor 10 that are rotatably provided and have the same rotation axis direction.
- the output shaft of the inner shaft rotor 110 and the output shaft of the outer shaft rotor 10 are located on one end side in the rotation axis direction.
- the upper side is one end side of the two-axis integrated motor 1.
- FIG. 2 when the biaxially integrated motor 1 (see FIG. 2) having a circular outer shape when viewed from the direction of the rotation axis is divided into two along a plane along the rotation axis P and passing through the rotation axis P. A cross-sectional view is shown.
- FIG. 2 is a schematic diagram showing an example of the positional relationship between the first rotor yoke 111, the base 80 with the cover 291 attached, and the second rotor yoke 11. As shown in FIG. FIG. 2 shows the positional relationship when viewed from the output shaft side.
- the rotation axis P of the first rotor yoke 111 coincides with the rotation axis of the second rotor yoke 11.
- the first rotor yoke 111 and the second rotor yoke 11 are provided so as to be independently rotatable on the inner peripheral side and the outer peripheral side of the base 80 with the base 80 to which the cover 291 is fixed interposed therebetween.
- the inner shaft rotor 110 and the outer shaft rotor 10 each have a cylindrical rotor yoke and a magnet provided on the rotor yoke.
- the inner shaft rotor 110 includes a cylindrical first rotor yoke 111 and a plurality of magnets 112 arranged in an annular shape along the outer peripheral surface of the first rotor yoke 111.
- the outer shaft rotor 10 includes a cylindrical second rotor yoke 11 and a plurality of magnets 12 arranged in an annular shape along the inner peripheral surface of the second rotor yoke 11.
- the inner shaft rotor 110 has a longer axial length than the outer shaft rotor 10.
- an extending portion 281 that is a part of the base 80 extends on the other end side on the outer peripheral side of the two-shaft integrated motor 1 provided with the second rotor yoke 11.
- the second rotor yoke 11 is provided in a non-contact state with the extending portion 281.
- the other structure with which the biaxial integral motor 1 is provided is not arrange
- the first rotor yoke 111 provided on the inner peripheral side has a width in the rotation axis direction substantially equal to the width from one end side to the other end side of the two-shaft integrated motor 1.
- the second rotor yoke 11 is smaller in width in the rotation axis direction than the first rotor yoke 111 in accordance with the width in the rotation axis direction of the extending portion 281.
- the magnitude of the output torque of the motor is related to the distance from the rotation axis P to the thrust generation position (between the magnet and the coil). For this reason, the torque of the outer shaft rotor 10 tends to be relatively larger than that of the inner shaft rotor 110.
- the axial lengths of the magnet 112 and the first core 71 provided on the inner shaft rotor 110 are made longer than the magnet 12 and the second core 75 provided on the outer shaft rotor 10, thereby The thrust of the inner shaft rotor 110 is made larger than the thrust.
- the difference between the output torque of the outer shaft rotor 10 and the output torque of the inner shaft rotor 110 is made smaller.
- Threaded holes 111b and 11b are provided in the output end portions 111a and 11a of the inner shaft rotor 110 and the outer shaft rotor 10 located on one end side of the first rotor yoke 111 and the second rotor yoke 11, respectively.
- a rotational driving force is transmitted to the driven body by screwing the driven body to the inner shaft rotor 110 and the outer shaft rotor 10 provided with the screw holes 111b and 11b.
- the biaxially integrated motor 1 includes a base 80, and a detection unit 230, a bearing unit 260, and a stator core unit 270 that are attached to the base 80 and arranged in order from one end side. Further, when viewed in a cross section as shown in FIG. 1, the detection unit 230, the bearing unit 260, and the stator core unit 270 are arranged coaxially. Specifically, the detection unit 230, the bearing unit 260, and the stator core unit 270 attached to the base 80 are arranged so as to be aligned along the rotation axis direction within the range between the inner shaft rotor 110 and the outer shaft rotor 10. Has been.
- the base 231 provided with the first fixing unit 242 and the second fixing unit 252 is fixed to the base 80, so that the first fixing unit 242 and the second fixing unit 252 are the base. It is fixed to 80. More specifically, the base 231 is attached to the base 80 using fasteners 232 and 233.
- the detection unit 230 includes a first detection unit 240 and a second detection unit 250.
- the first detector 240 detects the rotation angle of the inner shaft rotor 110.
- the first detection unit 240 includes a first rotation unit 241 and a first fixing unit 242.
- the first rotating unit 241 is fixed to the inner shaft rotor 110 and rotates together with the inner shaft rotor 110.
- the first fixing unit 242 is fixed to the base 80 via the base 231 and detects the rotation angle of the first rotating unit 241.
- the first detection unit 240 is a resolver, for example.
- the first rotating portion 241 is fixed to a position on one end side with respect to the bearing portion 260 and the stator core portion 270 on the outer peripheral surface side of the inner shaft rotor 110.
- the first rotating unit 241 includes a magnet, and the magnet rotates with respect to the first fixing unit 242 as the inner shaft rotor 110 rotates.
- the first fixing portion 242 is fixed at a position on the outer peripheral side in the radial direction with respect to the first rotating portion 241.
- the first fixing unit 242 includes a coil that generates electromagnetic induction according to the movement of the magnet due to the rotation of the first rotating unit 241.
- the first detection unit 240 detects the rotation angle of the inner shaft rotor 110 to which the first rotation unit 241 is fixed based on the output from the coil of the first fixing unit 242.
- the second detector 250 detects the rotation angle of the outer shaft rotor 10.
- the second detection unit 250 includes a second rotation unit 251 and a second fixing unit 252.
- the second rotating unit 251 is fixed to the outer shaft rotor 10 and rotates together with the outer shaft rotor 10.
- the second fixing unit 252 is fixed to the base 80 through the base 231 and detects the rotation angle of the second rotating unit 251.
- the second detection unit 250 is a resolver, for example.
- the second rotating portion 251 is fixed to a position on one end side with respect to the bearing portion 260 and the stator core portion 270 on the inner peripheral surface side of the outer shaft rotor 10.
- the second rotating unit 251 includes a magnet, and the magnet rotates with respect to the second fixed unit 252 as the outer shaft rotor 10 rotates.
- the second fixing portion 252 is fixed to a position on the inner peripheral side in the radial direction with respect to the second rotating portion 251.
- the second fixing portion 252 has a coil that generates electromagnetic induction according to the movement of the magnet due to the rotation of the second rotating portion 251.
- the second detection unit 250 detects the rotation angle of the outer shaft rotor 10 to which the second rotation unit 251 is fixed based on the output from the coil of the second fixing unit 252.
- the detection unit 230 has the same position in the rotation axis direction of the first detection unit 240 and the position in the rotation axis direction of the second detection unit 250. It can be said that the first detection unit 240 and the second detection unit 250 are located on the same plane orthogonal to the rotation axis P. Further, the detection unit 230 of the first embodiment is arranged in the order of the first rotation unit 241, the first fixing unit 242, the second fixing unit 252, and the second rotation unit 251 from the center of the rotation axis P toward the outside of the diameter. Has been.
- the detection unit 230 of the first embodiment is a resolver, and centering and gap adjustment are performed as a process for further improving the detection accuracy of the rotation angle when attached to the two-axis integrated motor 1.
- centering and gap adjustment adjustment of the fixed positional relationship between the inner shaft rotor 110 and the first rotating portion 241, adjustment of the fixed positional relationship between the outer shaft rotor 10 and the second rotating portion 251, and the first fixed portion with respect to the base 80
- operations such as adjustment of the fixing positions of 242 and the second fixing portion 252 are required.
- the detection unit 230 In order to perform such work, if other components (for example, a stator core, a bearing, etc.) are provided on the operator side than the detection unit 230 when adjusting the positional relationship of each component related to the work, With this configuration, access to the detection unit 230 may be hindered and the work may be complicated. In the first embodiment, since the detection unit 230 is located on the output shaft side with respect to the bearing unit 260 and the stator core unit 270, the operator can better access the detection unit 230. The gap adjustment can be performed more easily. As described above, according to the first embodiment, it is possible to more easily perform the work related to ensuring the detection accuracy of the detection unit 230 that detects the rotation angles of the inner shaft rotor 110 and the outer shaft rotor 10.
- other components for example, a stator core, a bearing, etc.
- a cover 291 that covers the first detection unit 240 and the second detection unit 250 is provided on one end side with respect to the first detection unit 240 and the second detection unit 250.
- the cover 291 is a plate-like member having an annular shape provided between the cylinder of the inner shaft rotor 110 and the cylinder of the outer shaft rotor 10 as shown in FIGS. 1 and 2, for example. They are arranged along a plane orthogonal to the rotation axis P.
- the cover 291 is fixed to one end side of the detection unit 230 using a fastener such as a screw 292, for example. More specifically, the cover 291 is fixed to a base portion 231 provided with, for example, a first fixing portion 242 and a second fixing portion 252.
- the bearing unit 260 includes a first bearing 261 and a second bearing 265.
- the first bearing 261 rotates in conjunction with the inner shaft rotor 110.
- the second bearing 265 rotates in conjunction with the outer shaft rotor 10.
- the bearing portion 260 is provided at a position between the detection portion 230 and the stator core portion 270 in the rotation axis direction.
- the first bearing 261 is provided, for example, at a position on the inner peripheral side with respect to the base 80 and on the outer peripheral side with respect to the inner shaft rotor 110, and is interposed between the base 80 and the inner shaft rotor 110. Since the first bearing 261 is interposed between the first bearing 261 and the base 80, the inner shaft rotor 110 is rotatably supported.
- the second bearing 265 is provided, for example, on the outer peripheral side with respect to the base 80 and on the inner peripheral side with respect to the outer shaft rotor 10, and is interposed between the base 80 and the outer shaft rotor 10. Since the second bearing 265 is interposed between the second bearing 265 and the base 80, the outer shaft rotor 10 is rotatably supported.
- the position of the end of the first bearing 261 on the one end side in the rotation axis direction and the position of the end of the second bearing 265 on the one end side in the rotation axis direction are the same.
- the first bearing 261 having two bearings 262 and 263 and the second bearing 265 having two bearings 266 and 267 are relatively positioned on one end side.
- the ends on one end side of each of the bearing 262 and the bearing 266 are along the same plane orthogonal to the rotation axis P.
- the first bearing 261 and the second bearing 265 include two ball bearings 262 and 263 and bearings 266 and 267, respectively. However, this is the first bearing 261 and the second bearing 265. It is an example of a specific configuration of the present invention and is not limited to this. Each of the first bearing 261 and the second bearing 265 only needs to have one or more bearings.
- the stator core portion 270 has a first core 71 and a second core 75.
- the first core 71 is a stator core of the inner shaft rotor 110.
- the second core 75 is a stator core of the outer shaft rotor 10.
- the first core 71 includes, for example, an iron core 73 fixed to the inner peripheral side of the base 80 at a position on the other end side than the bearing portion 260 and a coil 72 wound around the iron core 73. It has.
- the inner shaft rotor 110 rotates according to the power supply to the coil 72.
- the second core 75 includes, for example, an iron core 77 that is fixed to the outer peripheral side of the base 80 at a position on the other end side from the bearing portion 260, and a coil 76 that is wound around the iron core 77.
- the outer shaft rotor 10 rotates according to the power supply to the coil 76.
- the stator core portion 270 of the first embodiment is arranged in the order of the inner shaft rotor 110, the stator core portion 270, and the outer shaft rotor 10 from the center of the rotating shaft P toward the outside of the diameter.
- the base 80 is, for example, a cylindrical member having a diameter larger than the diameter of the inner shaft rotor 110 and smaller than the diameter of the outer shaft rotor 10.
- the side surface (inner peripheral surface, outer peripheral surface) and end surface of the base 80 are stepped according to the configuration of each part such as the detection unit 230, the bearing unit 260, and the stator core unit 270 fixed to the base 80. , Protrusions, depressions, holes, etc. may be provided.
- the diameter of the ring formed by the outer peripheral surface of the extending portion 281 is the same as the diameter of the second rotor yoke 11.
- the screwing hole used when fixing the biaxially integrated motor 1 to the attachment target of the biaxially integrated motor 1 is provided on the other end side of the extending portion 281 of the base 80. 282 is provided.
- an annular plate-like member 295 located on the inner peripheral side of the extending portion 281 and on the outer peripheral side of the inner shaft rotor 110 is fixed to the other end side of the base 80.
- the plate-like member 295 is fixed using a fastener such as a screw 296, for example.
- the detection unit 230 is positioned on one end side of the bearing unit 260 and the stator core unit 270, that is, on the output shaft side of the inner shaft rotor 110 and the outer shaft rotor 10.
- the centering of the first detection unit 240 and the second detection unit 250 and the adjustment of the gap of the rotation angle at which the inner shaft rotor 110 and the outer shaft rotor 10 are detected as 0 degrees are performed on the output shaft of the two-axis integrated motor 1. be able to. Therefore, the influence of physical shielding due to the arrangement of the bearing portion 260 and the stator core portion 270 can be suppressed when accessing the detection portion 230 in the centering and gap adjustment performed on the output shaft side.
- the detection accuracy of the detection unit 230 that detects the rotation angle can be more easily ensured. Moreover, since the bearing part 260 is located between the detection part 230 and the stator core part 270, the detection part 230 and the stator core part 270 can be separated, and the magnetic influence from the stator core part 270 on the detection part 230 is further reduced. be able to.
- the magnet 112 and the first core 71 provided in the inner shaft rotor 110 have a longer axial length than the magnet 12 and the second core 75 provided in the outer shaft rotor 10. Therefore, it becomes easier to reduce the difference between the output torque of the outer shaft rotor 10 and the output torque of the inner shaft rotor 110.
- the position of the first detection unit 240 in the rotation axis direction and the position of the second detection unit 250 in the rotation axis direction are the same. Therefore, the shaft length of the two-shaft integrated motor 1 can be made more compact. Further, since one of the first detection unit 240 and the second detection unit 250 does not shield the other in the direction of the rotation axis, it is easier to ensure the detection accuracy of the detection unit 230 that detects the rotation angle of the two rotors. Can be done.
- the position in the rotation axis direction of the end portion on the one end side of the first bearing 261 and the position in the rotation axis direction of the end portion on the one end side of the second bearing 265 are the same. Therefore, the shaft length of the two-shaft integrated motor 1 can be made more compact.
- the inner shaft rotor 110, the stator core portion 270, and the outer shaft rotor 10 are arranged in this order from the rotating shaft P toward the outside in the radial direction. Accordingly, since the first core 71 and the second core 75 can be arranged between the inner shaft rotor 110 and the outer shaft rotor 10, the diameter of the two-shaft integrated motor 1 can be made more compact. it can.
- first rotating part 241, the first fixing part 242, the second fixing part 252, and the second rotating part 251 are arranged in this order from the rotation axis P toward the outside in the radial direction. Therefore, since the first fixing portion 242 and the second fixing portion 252 can be arranged between the first rotating portion 241 and the second rotating portion 251, the diameter of the two-shaft integrated motor 1 can be made more compact. Can be.
- a cover 291 that covers the first detection unit 240 and the second detection unit 250 is provided on one end side with respect to the first detection unit 240 and the second detection unit 250. Therefore, the detection unit 230 can be protected by providing the cover 291 after the centering and the gap adjustment are completed.
- FIG. 3 is a diagram illustrating an example of a main configuration (stator core portion 70) of the two-axis integrated motor 1A according to the second embodiment.
- FIG. 4 is a diagram illustrating an example of a specific configuration of the two-axis integrated motor 1A.
- the two-shaft integrated motor 1A includes an inner shaft rotor 110 and an outer shaft rotor 10 which are rotors provided to be individually rotatable, an inner shaft stator 120 and an outer shaft stator 20 which are stators, and an inner shaft stator 120.
- a non-magnetic body 45 provided between the outer shaft stator 20 is provided.
- the rotational axis direction of the two-axis integrated motor 1A may be described as the Z direction in connection with the description of the embodiment with reference to the drawings.
- two directions orthogonal to each other along a plane orthogonal to the Z direction may be described as an X direction and a Y direction.
- the inner shaft rotor 110 and the outer shaft rotor 10 are rotatably provided and have the same rotation axis direction.
- the inner shaft rotor 110 includes a cylindrical inner shaft rotor yoke 111 and a magnet 112 arranged in an annular shape along the outer peripheral surface of the inner shaft rotor yoke 111.
- the outer shaft rotor 10 includes a cylindrical outer shaft rotor yoke 11 and a magnet 12 arranged in an annular shape along the inner peripheral surface of the outer shaft rotor yoke 11.
- the inner shaft rotor 110 and the outer shaft rotor 10 have the same rotation axis P, but the position of the rotation shaft may be different between the inner shaft rotor 110 and the outer shaft rotor 10.
- the inner shaft stator 120 has an inner shaft motor core 130 provided with a coil 150.
- the inner shaft rotor 110 rotates in response to power supply to the coil 150 of the inner shaft motor core 130.
- the outer shaft stator 20 has an outer shaft motor core 30 provided with a coil 50.
- the outer shaft rotor 10 rotates in response to power supply to the coil 50 of the outer shaft motor core 30.
- the inner shaft stator 120 of the second embodiment includes a cylindrical inner shaft stator back yoke 140 provided outside the inner shaft motor core 130. Further, the outer shaft stator 20 of the second embodiment has a cylindrical outer shaft stator back yoke 40 provided inside the outer shaft motor core 30.
- the inner-shaft stator back yoke 140 and the outer-shaft stator back yoke 40 according to the second embodiment are cylindrical members provided as integral members in the rotation axis direction, and are made of, for example, iron or a dust core (dust core).
- the two-axis integrated motor 1A includes an inner shaft rotor 110, an inner shaft stator 120, a nonmagnetic body 45, an outer shaft stator 20, an outer shaft from the inner side to the outer side of the diameter centered on the rotation axis P. These components are arranged in the order of the rotor 10.
- the nonmagnetic body 45 of the second embodiment is located between the inner shaft motor core 130 and the outer shaft motor core 30, for example. More specifically, the non-magnetic body 45 is positioned between the inner shaft stator back yoke 140 and the outer shaft stator back yoke 40 and is disposed on at least one of the inner shaft stator back yoke 140 and the outer shaft stator back yoke 40. It is fixed. Thus, the nonmagnetic material 45 is interposed between the inner shaft stator 120 and the outer shaft stator 20 along the circumferential direction around the rotation axis P.
- the non-magnetic body 45 is a member using, for example, a non-magnetic alloy, resin, or both. More specifically, the non-magnetic material 45 is formed in a cylindrical shape using at least one material of, for example, an aluminum alloy, austenitic stainless steel (for example, SUS316, SUS316, SUS305, etc.), or a synthetic resin. It is the member formed in.
- the cylinder of the nonmagnetic body 45 has a cross-sectional shape in the direction orthogonal to the rotation axis P with the rotation axis P as the center. When the non-magnetic material 45 is an alloy, it is fixed by a method such as adhesion using an adhesive or shrink fitting.
- the non-magnetic body 45 formed in a cylindrical shape in advance between the inner shaft stator back yoke 140 and the outer shaft stator back yoke 40 may be fixed by a method of bonding.
- the inner shaft stator back yoke 140 and the outer shaft stator back yoke 40 may be fixedly formed by a method of filling resin.
- FIG. 6, and FIG. 7 are diagrams showing examples of specific shapes of non-magnetic materials and examples of shapes different from those in FIG.
- the nonmagnetic material according to the present invention may not be a cylindrical shape in which the cross-sectional shape in the direction orthogonal to the rotation axis P is continuous without being interrupted in an annular shape, or may be an arc-shaped member.
- the nonmagnetic material 45a may have a shape in which one portion of the ring drawn by the cross-sectional shape is interrupted and discontinuous.
- the cylindrical nonmagnetic material 45a can be more easily formed by curving the plate-like alloy in an arc shape.
- the nonmagnetic material may be formed in a cylindrical shape as a whole by combining a plurality of arc-shaped members.
- 6 shows an example in which the nonmagnetic material has two nonmagnetic members 45b and 45b
- FIG. 7 shows an example in which the nonmagnetic material has three nonmagnetic members 45c, 45c and 45c. Is an example and is not limited to this.
- the nonmagnetic material may be constituted by four or more members.
- the non-magnetic material may have a configuration in which a plurality of members are provided side by side in the rotation axis direction.
- nonmagnetic member 45 may be a gap, or nonmagnetic materials facing each other across the discontinuous portion AP may be in contact with each other.
- the adhesive agent etc. may be filled into the discontinuous part AP.
- the nonmagnetic members 45b and 45c and the nonmagnetic members 45b and 45c constituting the nonmagnetic member may be collectively referred to as a nonmagnetic member 45 or the like.
- the inner shaft stator 120 and the outer shaft stator 20 are provided, for example, in the stator core portion 70 of the two-shaft integrated motor 1A shown in FIG. 4, which is the two-shaft integrated motor according to the present invention.
- This is an example of the specific configuration, and is not limited thereto, and can be changed as appropriate.
- the inner shaft rotor 110 has a longer axial length than the outer shaft rotor 10.
- the outer periphery of the two-shaft integrated motor 1A provided with the outer shaft rotor yoke 11 is extended from a base 280 formed integrally with the outer shaft stator back yoke 40 in the second embodiment.
- the extended portion 281 extends on the other end side.
- the outer shaft rotor yoke 11 is provided in a non-contact state with the extending portion 281.
- no other configuration provided in the two-shaft integrated motor 1A is arranged on the inner peripheral side of the two-shaft integrated motor 1A in which the inner shaft rotor yoke 111 is provided.
- the inner shaft rotor yoke 111 provided on the inner peripheral side has a width in the rotation axis direction substantially equal to the width from one end side to the other end side of the two-shaft integrated motor 1A.
- the outer shaft rotor yoke 11 has a smaller width in the rotating shaft direction than the inner shaft rotor yoke 111 in accordance with the width in the rotating shaft direction of the extending portion 281.
- outer shaft stator back yoke 40 and base 280 may be formed integrally or may be separate.
- the magnitude of the output torque of the motor is related to the distance from the rotation axis P to the thrust generation position (between the magnet and the coil). For this reason, the torque of the outer shaft rotor 10 tends to be relatively larger than that of the inner shaft rotor 110.
- the axial lengths of the magnet 112 and the inner shaft stator 120 provided in the inner shaft rotor 110 are made longer than the magnet 12 and the outer shaft stator 20 provided in the outer shaft rotor 10, thereby The thrust of the inner shaft rotor 110 is made larger than the thrust.
- the difference between the output torque of the outer shaft rotor 10 and the output torque of the inner shaft rotor 110 is made smaller.
- Screwed holes 11b and 111b are provided in the output end portions 11a and 111a of the inner shaft rotor 110 and the outer shaft rotor 10 located on one end side of the inner shaft rotor yoke 111 and the outer shaft rotor yoke 11, respectively.
- a rotational driving force is transmitted to the driven body by screwing the driven body to each of the inner shaft rotor 110 and the outer shaft rotor 10 provided with the screwing holes 11b and 111b.
- the two-axis integrated motor 1A includes a detection unit 230, a bearing unit 260, and a stator core unit 70 that are attached to the outer shaft stator back yoke 40 and are arranged in order from one end side. Further, when viewed in a cross section as shown in FIG. 4, the detection unit 230, the bearing unit 260, and the stator core unit 70 are arranged coaxially. Specifically, the detection unit 230, the bearing unit 260, and the stator core unit 70 that are attached to the outer shaft stator back yoke 40 are along the rotation axis direction within the range between the inner shaft rotor 110 and the outer shaft rotor 10. They are arranged side by side.
- the base portion 231 provided with the first fixing portion 242 and the second fixing portion 252 is fixed to the outer shaft stator back yoke 40, whereby the first fixing portion 242 and the second fixing portion are fixed.
- the portion 252 is fixed to the outer shaft stator back yoke 40. More specifically, the base 231 is attached to the outer shaft stator back yoke 40 using fasteners 232 and 233.
- the detection unit 230 includes a first detection unit 240 and a second detection unit 250.
- the first detector 240 detects the rotation angle of the inner shaft rotor 110.
- the first detection unit 240 includes a first rotation unit 241 and a first fixing unit 242.
- the first rotating unit 241 is fixed to the inner shaft rotor 110 and rotates together with the inner shaft rotor 110.
- the first fixing part 242 is fixed to the outer shaft stator back yoke 40 via the base part 231 and detects the rotation angle of the first rotating part 241.
- the first detection unit 240 is a resolver, for example.
- the first rotating portion 241 is fixed to a position on one end side with respect to the bearing portion 260 and the stator core portion 70 on the outer peripheral surface side of the inner shaft rotor 110.
- the first rotating unit 241 includes a magnet, and the magnet rotates with respect to the first fixing unit 242 as the inner shaft rotor 110 rotates.
- the first fixing portion 242 is fixed at a position on the outer peripheral side in the radial direction with respect to the first rotating portion 241.
- the first fixing unit 242 includes a coil that generates electromagnetic induction according to the movement of the magnet due to the rotation of the first rotating unit 241.
- the first detection unit 240 detects the rotation angle of the inner shaft rotor 110 to which the first rotation unit 241 is fixed based on the output from the coil of the first fixing unit 242.
- the second detector 250 detects the rotation angle of the outer shaft rotor 10.
- the second detection unit 250 includes a second rotation unit 251 and a second fixing unit 252.
- the second rotating unit 251 is fixed to the outer shaft rotor 10 and rotates together with the outer shaft rotor 10.
- the second fixed portion 252 is fixed to the outer shaft stator back yoke 40 via the base portion 231 and detects the rotation angle of the second rotating portion 251.
- the second detection unit 250 is a resolver, for example.
- the second rotating portion 251 is fixed to a position on one end side with respect to the bearing portion 260 and the stator core portion 70 on the inner peripheral surface side of the outer shaft rotor 10.
- the second rotating unit 251 includes a magnet, and the magnet rotates with respect to the second fixed unit 252 as the outer shaft rotor 10 rotates.
- the second fixing portion 252 is fixed to a position on the inner peripheral side in the radial direction with respect to the second rotating portion 251.
- the second fixing portion 252 has a coil that generates electromagnetic induction according to the movement of the magnet due to the rotation of the second rotating portion 251.
- the second detection unit 250 detects the rotation angle of the outer shaft rotor 10 to which the second rotation unit 251 is fixed based on the output from the coil of the second fixing unit 252.
- the position of the first detection unit 240 in the rotation axis direction and the position of the second detection unit 250 in the rotation axis direction are the same. It can be said that the first detection unit 240 and the second detection unit 250 are located on the same plane orthogonal to the rotation axis P.
- the detection unit 230 according to the second embodiment has a first rotation unit 241, a first fixing unit 242, a second fixing unit 252, and a second rotating unit 251 in this order from the center of the rotation axis P toward the outside of the diameter. Is arranged.
- the detection unit 230 of the second embodiment is a resolver, and centering and gap adjustment are performed as a process for further improving the detection accuracy of the rotation angle when attached to the two-axis integrated motor 1A.
- centering and gap adjustment adjustment of the fixed positional relationship between the inner shaft rotor 110 and the first rotating portion 241, adjustment of the fixed positional relationship between the outer shaft rotor 10 and the second rotating portion 251, and the outer shaft stator back yoke 40 Operations such as adjustment of the fixing positions of the first fixing part 242 and the second fixing part 252 may be required.
- the detection unit 230 In order to perform such work, if other components (for example, a stator core, a bearing, etc.) are provided on the operator side than the detection unit 230 when adjusting the positional relationship of each component related to the work, With this configuration, access to the detection unit 230 may be hindered and the work may be complicated.
- the detection unit 230 since the detection unit 230 is positioned on the output shaft side with respect to the bearing unit 260 and the stator core unit 70, the operator can better access the detection unit 230. The gap adjustment can be performed more easily. As described above, according to the second embodiment, it is possible to more easily perform the work related to ensuring the detection accuracy of the detection unit 230 that detects the rotation angles of the inner shaft rotor 110 and the outer shaft rotor 10.
- a cover 291 that covers the first detection unit 240 and the second detection unit 250 is provided on one end side with respect to the first detection unit 240 and the second detection unit 250.
- the cover 291 is a plate-like member having an annular shape provided between the cylinder of the inner shaft rotor 110 and the cylinder of the outer shaft rotor 10, for example, along a plane orthogonal to the rotation axis P. Has been placed.
- the cover 291 is fixed to one end side of the detection unit 230 using a fastener such as a screw 292, for example. More specifically, the cover 291 is fixed to a base portion 231 provided with, for example, a first fixing portion 242 and a second fixing portion 252.
- the bearing unit 260 includes a first bearing 261 and a second bearing 265.
- the first bearing 261 rotates in conjunction with the inner shaft rotor 110.
- the second bearing 265 rotates in conjunction with the outer shaft rotor 10.
- the bearing portion 260 is provided at a position between the detection portion 230 and the stator core portion 70 in the rotation axis direction.
- the first bearing 261 is provided, for example, at a position on the inner peripheral side with respect to the outer shaft stator back yoke 40 and on the outer peripheral side with respect to the inner shaft rotor 110, and between the outer shaft stator back yoke 40 and the inner shaft rotor 110. Intervene in between.
- the second bearing 265 is provided, for example, on the outer peripheral side with respect to the outer shaft stator back yoke 40 and on the inner peripheral side with respect to the outer shaft rotor 10, and is interposed between the outer shaft stator back yoke 40 and the outer shaft rotor 10. To do. Since the second bearing 265 is interposed between the outer shaft stator back yoke 40 and the outer shaft rotor 10, the outer shaft rotor 10 is rotatably supported.
- the position of the end of the first bearing 261 on the one end side in the rotation axis direction and the position of the end of the second bearing 265 on the one end side in the rotation axis direction are the same.
- the first bearing 261 having two bearings 262 and 263 and the second bearing 265 having two bearings 266 and 267 are positioned relatively on one end side.
- the ends on one end side of each of the bearing 262 and the bearing 266 are along the same plane orthogonal to the rotation axis P.
- each of the first bearing 261 and the second bearing 265 includes two ball bearings 262 and 263 and bearings 266 and 267, which are the first bearing 261 and the second bearing 265. It is an example of a specific configuration of the present invention and is not limited to this. Each of the first bearing 261 and the second bearing 265 only needs to have one or more bearings.
- the portions extending to one end side and the other end side of the stator core portion 70 are each part such as the detection portion 230, the bearing portion 260 and the stator core portion 70 fixed to the outer shaft stator back yoke 40. Steps, protrusions, depressions, holes, etc. according to the configuration are provided.
- the diameter of the ring formed by the outer peripheral surface of the extending portion 281 is the same as the diameter of the outer shaft rotor yoke 11.
- the base 280 is provided with a screw hole 282 used when the biaxial integrated motor 1A is fixed to an attachment target of the biaxial integrated motor 1A.
- annular plate-shaped member 295 located on the inner peripheral side of the extending portion 281 and on the outer peripheral side of the inner shaft rotor 110 is fixed to the base 280.
- the plate-like member 295 is fixed using a fastener such as a screw 296, for example.
- FIG. 8 is a diagram illustrating an example of a specific structure of the stator (stator) according to the second embodiment.
- a specific configuration example of the stator (stator) included in the two-shaft integrated motor 1A will be described with reference to FIGS. 3 and 8 by using the outer shaft stator 20 as an example.
- the outer shaft motor core 30 has an annular edge portion 31 located on the outer peripheral side, and four or more core portions 32 protruding inward from the edge portion 31.
- a coil 50 is provided in each core portion 32.
- the outer shaft motor core 30 has a laminated structure in which electromagnetic steel plate layers in which electromagnetic steel plates 60 described later are annularly arranged are laminated.
- the edge portion 31 is positioned along a cylindrical shape having the rotation axis P as a central axis as a whole by such a laminated structure. Further, the four or more core portions 32 and the coils 50 are arranged in an annular shape around the rotation axis P inside the edge portion 31.
- the outer shaft stator back yoke 40 is located on the opposite side of the outer shaft rotor 10 with respect to the core portion 32.
- FIG. 8 is a view illustrating a laminated structure of electromagnetic steel sheet layers included in the outer shaft motor core 30 according to the second embodiment.
- the outer shaft motor core 30 is viewed from one direction (eg, the Y direction) orthogonal to the Z direction.
- FIG. 10 is a view showing one electromagnetic steel plate 60 according to the second embodiment.
- the outer shaft motor core 30 has a structure in which a plurality of electromagnetic steel sheet layers are laminated in the Z direction, for example, as shown in FIG. As shown in FIGS. 8 and 9, a plurality of electromagnetic steel plates 60 are annularly arranged in one electromagnetic steel plate layer. As shown in FIGS. 8 and 10, the electromagnetic steel plate 60 has two teeth 61.
- the outer shaft motor core 30 forms the core portion 32 of the coil 50 by laminating the teeth 61 of the electromagnetic steel plates 60 included in each of the plurality of electromagnetic steel plates by a laminated structure. That is, for example, as shown in FIG. 9, the core portion 32 that functions as the core of the coil 50 provided in the outer shaft stator 20 includes teeth 61 stacked in the Z direction.
- One magnetic steel sheet 60 has a base 62 in which two teeth 61 are physically continuous, for example, as shown in FIG.
- the base 62 has, for example, an arc shape in which two teeth 61 included in one electromagnetic steel plate 60 are positioned at a predetermined distance.
- a plurality of electromagnetic steel plates 60 are annularly arranged in one electromagnetic steel plate layer, and the plurality of electromagnetic steel plate layers are laminated, so that the base portions 62 come into contact with each other to form the edge portion 31.
- the two teeth 61 included in the electromagnetic steel sheet 60 are discontinuous on the opposite side of the outer shaft rotor 10. Specifically, for example, as shown in FIG.
- the tip of the tooth 61 is disposed with a gap with respect to the other adjacent teeth 61.
- a gap is provided between the teeth 61 provided so as to protrude from the base 62 in the radial direction of the outer shaft motor core 30.
- the two teeth 61 protrude from the base 62 positioned on the rotor side with respect to the two teeth 61 on the opposite side of the outer shaft rotor 10.
- the electromagnetic steel plate 60 in a so-called outer rotor motor such as a motor on the outer shaft side, two teeth 61 projecting toward the inner side of the arc of the base 62 are provided on the electromagnetic steel plate 60.
- the shape of the base 62 is not necessarily an arc shape.
- the side of the base portion 62 from which the teeth 61 protrude may be a straight line perpendicular to the protruding direction of the teeth 61.
- the electromagnetic steel sheet 60 shown in FIG. 10 has a shape in which two T-shaped upper sides are connected by projecting two teeth 61 from a base 62.
- a base portion 62 projecting on both sides in the circumferential direction like the upper side of the T shape with respect to the teeth 61 constituting the core portion 32 locks the coil 50 in the radial direction. Thereby, the extension of the winding of the coil 50 in the direction in which the outer shaft rotor 10 is located, the jumping out, and the like can be suppressed. Further, the base 62 has an arc shape on the side of the upper side of the connected T-shaped portion where the teeth 61 do not protrude.
- the part corresponding to the midpoint of two teeth 61 which one electromagnetic steel plate 60 has is thinner than the other part.
- the intermediate portion 63 which is a portion corresponding to the intermediate point is curved like a bay station shape with a concave lens cross section in the radial direction, and the thickness of the base portion 62 in the radial direction. Is narrowing.
- the teeth 61 are configured such that a plurality of the teeth 61 are stacked along the rotation axis direction to form the core portion 32 and the coil 50 is provided. Interference can occur. It is desirable that the interference of the magnetic field is further reduced from the viewpoint of further improving the efficiency of the two-axis integrated motor 1A.
- Magnetic wraparound tends to occur relatively stronger in the closed slot HS in which the teeth 61 are physically connected than in the open slot KS in which the teeth 61 are not physically connected. Further, the magnetic wraparound tends to occur more strongly as the degree of physical continuity in the closed slot HS increases. Therefore, in the second embodiment, the magnetic wraparound is suppressed by making the portion corresponding to the midpoint between the teeth 61 thinner than the other portions. As a result, a decrease in efficiency due to magnetic field interference can be suppressed, and the efficiency of the two-axis integrated motor 1A can be made higher. In FIG.
- the intermediate part 63 with parentheses and reference numerals is arranged in a different electromagnetic steel sheet layer from the electromagnetic steel sheet layer in which the electromagnetic steel sheet 60 having the intermediate part 63 without reference numerals in parentheses is arranged. It is the intermediate part 63 of the electromagnetic steel plate 60 which is being.
- FIG. 11 is a diagram showing one of the two phases of the arrangement of the plurality of electromagnetic steel sheets 60 in one electromagnetic steel sheet layer.
- FIG. 12 is a diagram showing the other of the two phases of the arrangement of the plurality of electromagnetic steel plates 60 in one electromagnetic steel plate layer.
- the difference between FIG. 11 and FIG. 12 shows the difference in the arrangement of the electromagnetic steel sheets 60 having different phases as viewed from the same direction.
- one phase shown in FIG. 11 is referred to as a first phase.
- the other phase shown in FIG. 12 is referred to as a second phase.
- Symbol PS1 indicates a first phase electrical steel sheet layer.
- Symbol PS2 indicates a second phase electrical steel sheet layer.
- the outer shaft stator 20 has such two phases of electrical steel sheet layers. Specifically, the phase of the arrangement of the electromagnetic steel sheets 60 is shifted by 1 tooth between the two phases. Since the phase of the arrangement of the electromagnetic steel plates 60 is shifted by one tooth between the two phases, the arrangement of the two teeth 61 included in one electromagnetic steel plate 60 is staggered between the two phases. Specifically, for example, one of the teeth 61a and 61b, which is the two teeth 61 of one electromagnetic steel plate 60 in the first phase (the teeth 61a), is disposed at the position where the other (the teeth 61) in the second phase. 61b) is located.
- the other (tooth 61b) is located in the position where one (tooth 61a) is arrange
- one of the two teeth 61 is denoted by reference numeral 61a, and the other is denoted by reference numeral 61b.
- a plurality of electromagnetic steel sheets 60 in one electromagnetic steel sheet layer are arranged with a gap therebetween.
- the electromagnetic steel sheets 60 arranged annularly in one electromagnetic steel sheet layer are not in contact with each other. More specifically, it is two teeth 61 which each different electromagnetic steel plate 60 has, and the interval between adjacent teeth 61 in a non-contact state, the interval between two teeth 61 which one electromagnetic steel plate 60 has, Are arranged along the annular arrangement direction in one electromagnetic steel sheet layer so that they are the same.
- the gap (slot) between the two teeth 61 is the gap (closed slot HS) between the two teeth 61 included in one electromagnetic steel sheet 60 or the gap between the two teeth 61 included in different electromagnetic steel sheets 60. Regardless of whether (open slot KS) or not, the spacing between the teeth 61 arranged in an annular shape is the same.
- the shape of the electromagnetic steel sheet 60 is two teeth 61 each of which has a different electromagnetic steel sheet 60, and the distance between adjacent teeth 61 in a non-contact state and the two teeth 61 of one electromagnetic steel sheet 60. It is the shape which can make the space
- the extension length of the portion of the base 62 that extends so as to connect the two teeth 61 included in one electromagnetic steel plate 60 is from the tooth 61 toward the opposite side of the extending direction. It is more than twice the extended length of the protruding portion.
- the phase of arrangement of a plurality of electromagnetic steel sheets 60 between adjacent electromagnetic steel sheet layers is different.
- the outer shaft motor core 30 is formed by alternately laminating first-phase electromagnetic steel sheet layers PS1 and second-phase electromagnetic steel sheet layers PS2.
- the open slots KS and the closed slots HS are alternately arranged in the axial direction.
- the slot of the outer shaft motor core 30 is a slot (semi-closed slot) in which one layer is an open slot KS and one layer is a closed slot HS for two magnetic steel sheet layers in the rotation axis direction.
- Such a structure is lighter than a structure in which one electromagnetic steel sheet layer is a complete closed slot HS that is completely continuous in an annular shape.
- FIG. 13 is a diagram showing an example in which electromagnetic steel sheet layers having the same phase are successively laminated.
- the phase of the arrangement of the plurality of electromagnetic steel sheets 60 between the electromagnetic steel sheet layers adjacent to each other in the rotation axis direction is different, but this is an example of the phase relationship between the laminated electromagnetic steel sheet layers. It is shown and not limited to this.
- the number of consecutive identical phases may be two or more.
- the continuous number of the same phase is a number in which the electromagnetic steel sheet layers having the same phase are continuous along the rotation axis direction.
- the number of consecutive identical phases is 5, but it may be any natural number of 4 or less or 6 or more.
- the outer shaft stator 20 in the description relating to the outer shaft stator 20, except for special matters relating to the difference between the motor of the in-rotor and the motor of the outer rotor, the outer shaft stator 20, the outer shaft motor core 30, the edge portion 31, the core portion 32, and the coil 50 are included.
- Magnetic steel sheet 60, teeth 61, 61a, 61b, base 62, intermediate part 63, closed slot HS, open slot KS, first phase electromagnetic steel sheet layer PS1, and second phase electromagnetic steel sheet layer PS2 are denoted by the inner shaft stator 120, the inner shaft motor core 130, the edge portion 131, the core portion 132, the coil 150, the electromagnetic steel plate 160, the teeth 161, 161a, 161b, the base portion 162, the intermediate portion 163, and the closed slot, respectively.
- hs, open slot ks, first phase electromagnetic steel sheet layer ps1, and second phase electromagnetic steel sheet layer ps2 are replaced with the inner shaft stator 120. It can be read as an explanation.
- FIG. 14 is a diagram showing one of the two phases of the arrangement of the plurality of electromagnetic steel sheets 160 in one electromagnetic steel sheet layer.
- FIG. 15 is a diagram showing the other of the two phases of the arrangement of the plurality of electromagnetic steel sheets 160 in one electromagnetic steel sheet layer.
- a coil 150 is provided outside the inner shaft motor core 130.
- two teeth 161 projecting toward the outer side of the arc of the base portion 162 are provided on the electromagnetic steel sheet 160.
- the shape of the base 162 is not necessarily an arc.
- the side of the base 162 from which the teeth 161 protrude may be a straight line orthogonal to the protruding direction of the teeth 161.
- the inner shaft stator back yoke 140 is provided outside the inner shaft motor core 130.
- the inner shaft rotor 110, the inner shaft stator 120, the outer shaft stator 20, and the outer shaft rotor 10 are arranged in this order from the rotating shaft P in the radial direction. Since the non-magnetic body 45 and the like are interposed between the inner shaft stator 120 and the outer shaft stator 20, the non-magnetic body 45 and the like prevent the magnetic field interference generated in each of the inner shaft stator 120 and the outer shaft stator 20 from occurring. It can be suppressed by the magnetic body 45 or the like. Thus, magnetic field interference can be further suppressed.
- the inner shaft stator 120 has an inner shaft motor core 130 provided with a coil 150
- the outer shaft stator 20 has an outer shaft motor core 30 provided with a coil 50
- the nonmagnetic material 45 and the like are It is located between the shaft motor core 130 and the outer shaft motor core 30. Therefore, since the non-magnetic body 45 and the like are interposed between the inner shaft motor core 130 provided with the coils 50 and 150 that generate the magnetic field and the outer shaft motor core 30, the interference of the magnetic field can be suppressed more reliably.
- the inner shaft stator 120 has a cylindrical inner shaft stator back yoke 140 provided outside the inner shaft motor core 130, and the outer shaft stator 20 is formed in a cylindrical shape provided inside the outer shaft motor core 30.
- the outer shaft stator back yoke 40 is provided, and the nonmagnetic material 45 and the like are located between the inner shaft stator back yoke 140 and the outer shaft stator back yoke 40.
- the shape of the non-magnetic body 45 or the like may be any shape that fits between the cylindrical inner shaft stator back yoke 140 and the outer shaft stator back yoke 40. Therefore, the nonmagnetic material 45 etc. can be provided more simply.
- the non-magnetic body 45 and the like are arc-shaped members whose cross-sectional shape in the direction orthogonal to the rotation axis P is centered on the rotation axis P. Therefore, the two-shaft integrated motor 1A can be easily stored in a cylindrical shape with the rotation axis P as the center.
- the nonmagnetic material 45 or the like is a nonmagnetic alloy or resin. Therefore, the interference of the magnetic field can be more reliably suppressed by the nonmagnetic material 45 or the like.
- the nonmagnetic material 45 and the like can be provided with a material that is relatively easily available, and magnetic field interference can be suppressed at a lower cost.
- the detection unit 230 is located on one end side of the bearing unit 260 and the stator core unit 70, that is, on the output shaft side of the inner shaft rotor 110 and the outer shaft rotor 10, the first detection unit 240 and the second detection unit.
- the centering of 250 and the gap adjustment of the rotation angle detected by each of the inner shaft rotor 110 and the outer shaft rotor 10 as 0 degrees can be performed on the output shaft of the two-shaft integrated motor 1A.
- the influence of physical shielding due to the arrangement of the bearing portion 260 and the stator core portion 70 can be suppressed when accessing the detection portion 230 in the centering and gap adjustment performed on the output shaft side,
- the detection accuracy of the detection unit 230 that detects the rotation angle can be more easily ensured.
- the bearing part 260 is located between the detection part 230 and the stator core part 70, the detection part 230 and the stator core part 70 can be separated, and the magnetic influence from the stator core part 70 on the detection part 230 is further reduced. be able to.
- the output torque of the outer shaft rotor 10 is relatively higher than that of the inner shaft rotor 110.
- the magnet 112 and the inner shaft stator 120 provided in the inner shaft rotor 110 are made longer than the magnet 12 and the outer shaft stator 20 provided in the outer shaft rotor 10 in the axial direction of the rotation axis. ing. Therefore, the thrust of the inner shaft rotor 110 can be made larger than the thrust of the outer shaft rotor, and the difference between the output torque of the outer shaft rotor 10 and the output torque of the inner shaft rotor 110 can be easily reduced.
- the position of the first detection unit 240 in the rotation axis direction and the position of the second detection unit 250 in the rotation axis direction are the same. Therefore, the shaft length of the two-axis integrated motor 1A can be made more compact. Further, since one of the first detection unit 240 and the second detection unit 250 does not shield the other in the direction of the rotation axis, it is easier to ensure the detection accuracy of the detection unit 230 that detects the rotation angle of the two rotors. Can be done.
- the position in the rotation axis direction of the end portion on the one end side of the first bearing 261 and the position in the rotation axis direction of the end portion on the one end side of the second bearing 265 are the same. Therefore, the shaft length of the two-axis integrated motor 1A can be made more compact.
- the inner shaft rotor 110, the stator core portion 70, and the outer shaft rotor 10 are arranged in this order from the rotating shaft P toward the outer side in the radial direction. Accordingly, since the inner shaft stator 120 and the outer shaft stator 20 can be arranged between the inner shaft rotor 110 and the outer shaft rotor 10, the diameter of the two-shaft integrated motor 1A can be made more compact. it can.
- first rotating part 241, the first fixing part 242, the second fixing part 252, and the second rotating part 251 are arranged in this order from the rotation axis P toward the outside in the radial direction. Therefore, since the first fixing portion 242 and the second fixing portion 252 can be arranged between the first rotating portion 241 and the second rotating portion 251, the diameter of the two-axis integrated motor 1A can be made more compact. Can be.
- a cover 291 that covers the first detection unit 240 and the second detection unit 250 is provided on one end side with respect to the first detection unit 240 and the second detection unit 250. Therefore, the detection unit 230 can be protected by providing the cover 291 after the centering and the gap adjustment are completed.
- the electromagnetic steel sheet 60 having two teeth 61 of one electromagnetic steel sheet 60 in an annular shape, more teeth 61 are provided in one electromagnetic steel sheet layer, so that the variation in the shape of the teeth 61 is further increased. Can be reduced. That is, since there are two integrally formed teeth 61 per electromagnetic steel sheet 60, the consistency of the shapes of all the teeth 61 is ensured by ensuring the accuracy of the consistency of the shapes of the two teeth 61. Accuracy can be ensured. Moreover, even if one electromagnetic steel sheet 60 has a magnetic directionality by arranging a plurality of electromagnetic steel sheets 60 in a single electromagnetic steel sheet layer, one electromagnetic steel sheet layer is one electromagnetic steel sheet.
- the phase of the arrangement of the electromagnetic steel sheets 60 is shifted by one tooth 61 minutes between the two phases. Accordingly, the electromagnetic steel sheets 60 having the two teeth 61 are staggered at positions where the electromagnetic steel sheet layers having different phases are stacked. Therefore, since the structure which continues in an annular shape can be formed by laminating
- the two teeth 61 of the electromagnetic steel sheet 60 are discontinuous on the opposite side of the outer shaft rotor 10. Therefore, the coil 50 formed in advance can be fitted into the core on which the teeth 61 are laminated, and the coil 50 can be easily provided.
- a plurality of electromagnetic steel sheets 60 in one electromagnetic steel sheet layer are arranged with a gap therebetween. Therefore, the weight can be reduced as compared with a structure in which the electromagnetic steel sheet layer is completely continuous in an annular shape. Moreover, since the magnetic wraparound generated between the coils 50 can be reduced, the efficiency of the two-axis integrated motor 1A can be further increased.
- the number of each of the two phases of the electrical steel sheet layers is equal. Therefore, it becomes easy to balance the strength and magnetic characteristics of the outer shaft stator 20 as a whole.
- the phase of the arrangement of the plurality of electrical steel sheets 60 between the electrical steel sheet layers adjacent in the rotation axis direction is different. Accordingly, the electromagnetic steel sheets 60 having the two teeth 61 are staggered at the position where the two layers of the electromagnetic steel sheet layers are laminated. Therefore, since the annularly continuous structure can be formed by laminating the electromagnetic steel sheets 60 having different phases, sufficient rigidity can be ensured more reliably as an annular structure.
- the portion corresponding to the midpoint between the two teeth 61 is thinner than the other portions. Therefore, it is possible to reduce the magnetic wraparound between the coils 50 adjacent to each other in the annular direction, and the efficiency of the two-axis integrated motor 1A can be made higher.
- the outer shaft stator 20 has a cylindrical yoke provided on the opposite side of the outer shaft rotor 10 with respect to the teeth 61, and the yoke is integral with the rotation axis direction. Therefore, since the outer shaft stator 20 is supported by the yoke that is integrated in the stacking direction of the electromagnetic steel sheet layers, sufficient rigidity can be ensured more reliably.
- the detection part 230 in said Embodiment 1, 2 is a resolver, this is an example and is not restricted to this.
- the detection unit 230 may be, for example, an optical encoder.
- the two-axis integrated motor according to the first and second embodiments may be used as an actuator for various industrial machines such as a small component conveying device, an electronic component inspection device, and a semiconductor inspection device, but is not limited thereto. Absent.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Motor Or Generator Frames (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
Description
図1は、実施形態1に係る二軸一体型モータ1の主要構成を示す断面図である。二軸一体型モータ1は、それぞれ回転可能に設けられて回転軸方向が同一である内軸ロータ110及び外軸ロータ10を有する。内軸ロータ110の出力軸及び外軸ロータ10の出力軸は、回転軸方向の一端側に位置する。図1では、上側が二軸一体型モータ1の一端側である。また、図1では、回転軸方向から見た場合の外形が円状である二軸一体型モータ1(図2参照)を、回転軸Pに沿い、回転軸Pを通る平面で二分した場合の断面図を示している。
図3は、実施形態2に係る二軸一体型モータ1Aの主要構成(ステータコア部70)の一例を示す図である。図4は、二軸一体型モータ1Aの具体的構成の一例を示す図である。二軸一体型モータ1Aは、それぞれ個別に回転可能に設けられた回転子である内軸ロータ110と外軸ロータ10、固定子である内軸ステータ120と外軸ステータ20、内軸ステータ120と外軸ステータ20との間に設けられた非磁性体45を有する。以下、図を参照した実施形態の説明に係り、二軸一体型モータ1Aの回転軸方向をZ方向と記載することがある。また、Z方向に直交する平面に沿って互いに直交する二方向をX方向、Y方向と記載することがある。
10 外軸ロータ
11 外軸ロータヨーク
11a,111a 出力端部
11b,111b,282 ねじ留め穴
12,112 磁石
20 外軸ステータ
30 外軸モータコア
40 外軸ステータバックヨーク
45,45a 非磁性体
45b,45c 非磁性部材
50,72,76,150 コイル
70,270 ステータコア部
71 第1コア
73,77 鉄心
75 第2コア
80,280 ベース
110 内軸ロータ
111 内軸ロータヨーク
120 内軸ステータ
130 内軸モータコア
140 内軸ステータバックヨーク
230 検出部
231 基部
232,233 留め具
240 第1検出部
241 第1回転部
242 第1固定部
250 第2検出部
251 第2回転部
252 第2固定部
260 軸受部
261 第1軸受
262,263,266,267 軸受
265 第2軸受
281 延出部
291 カバー
292,296 ねじ
P 回転軸
Claims (7)
- それぞれ回転可能に設けられて回転軸方向が同一である内軸ロータと外軸ロータを有し、前記内軸ロータの出力軸及び前記外軸ロータの出力軸が前記回転軸方向の一端側に位置する二軸一体型モータであって、
前記内軸ロータの回転角度を検出する第1検出部及び前記外軸ロータの回転角度を検出する第2検出部を有する検出部と、
前記内軸ロータと連動して回転する第1軸受及び前記外軸ロータと連動して回転する第2軸受を有する軸受部と、
前記内軸ロータのステータコアである第1コアと前記外軸ロータのステータコアである第2コアを有するステータコア部と、
前記一端側から順に、前記検出部、前記軸受部及び前記ステータコア部が取り付けられたベースとを備える
二軸一体型モータ。 - 前記内軸ロータに設けられた磁石及び前記第1コアは、前記回転軸方向の軸長が前記外軸ロータに設けられた磁石及び前記第2コアより長い
請求項1に記載の二軸一体型モータ。 - 前記第1検出部の前記回転軸方向の位置と前記第2検出部の前記回転軸方向の位置が同一である
請求項1又は2に記載の二軸一体型モータ。 - 前記第1軸受の前記一端側の端部の前記回転軸方向の位置と前記第2軸受の前記一端側の端部の前記回転軸方向の位置が同一である
請求項1から3のいずれか一項に記載の二軸一体型モータ。 - 前記回転軸から径方向の外側に向かって、前記内軸ロータ、前記ステータコア部、前記外軸ロータの順に配置されている
請求項1から4のいずれか一項に記載の二軸一体型モータ。 - 前記第1検出部は、前記内軸ロータに固定されて前記内軸ロータとともに回転する第1回転部と、前記ベースに固定されて前記第1回転部の回転角度を検出する第1固定部とを有し、
前記第2検出部は、前記外軸ロータに固定されて前記外軸ロータとともに回転する第2回転部と、前記ベースに固定されて前記第2回転部の回転角度を検出する第2固定部とを有し、
前記回転軸から径方向の外側に向かって、前記第1回転部、前記第1固定部、前記第2固定部、前記第2回転部の順に配置されている
請求項1から5のいずれか一項に記載の二軸一体型モータ。 - 前記第1検出部及び前記第2検出部に対して前記一端側に前記第1検出部及び前記第2検出部を被覆するカバーが設けられている
請求項1から6のいずれか一項に記載の二軸一体型モータ。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201780045079.1A CN109478836A (zh) | 2016-07-22 | 2017-07-18 | 双轴一体型马达 |
KR1020197001844A KR102426462B1 (ko) | 2016-07-22 | 2017-07-18 | 2축 일체형 모터 |
JP2017561984A JP6323630B1 (ja) | 2016-07-22 | 2017-07-18 | 二軸一体型モータ |
US16/074,845 US10432072B2 (en) | 2016-07-22 | 2017-07-18 | Dual shaft integrated motor |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2016144615 | 2016-07-22 | ||
JP2016-143925 | 2016-07-22 | ||
JP2016143925 | 2016-07-22 | ||
JP2016-144615 | 2016-07-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2018016496A1 true WO2018016496A1 (ja) | 2018-01-25 |
Family
ID=60992511
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2017/025989 WO2018016496A1 (ja) | 2016-07-22 | 2017-07-18 | 二軸一体型モータ |
PCT/JP2017/025990 WO2018016497A1 (ja) | 2016-07-22 | 2017-07-18 | 二軸一体型モータ |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2017/025990 WO2018016497A1 (ja) | 2016-07-22 | 2017-07-18 | 二軸一体型モータ |
Country Status (6)
Country | Link |
---|---|
US (2) | US10432072B2 (ja) |
JP (3) | JP6330183B1 (ja) |
KR (2) | KR102419884B1 (ja) |
CN (2) | CN109478836A (ja) |
TW (2) | TWI642258B (ja) |
WO (2) | WO2018016496A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2019187163A (ja) * | 2018-04-16 | 2019-10-24 | 日本精工株式会社 | 二軸一体型モータ及びアクチュエータ |
JP2019187166A (ja) * | 2018-04-16 | 2019-10-24 | 日本精工株式会社 | 二軸一体型モータ及びアクチュエータ |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10581358B2 (en) * | 2018-03-30 | 2020-03-03 | Kohler Co. | Alternator flux shaping |
TWI704749B (zh) * | 2019-08-07 | 2020-09-11 | 崑山科技大學 | 雙轉子發電機 |
KR102504873B1 (ko) * | 2020-11-27 | 2023-02-28 | 경성대학교 산학협력단 | 복식 제어장치를 구비한 이중 공극형 표면 영구자석 동기모터 |
KR102449014B1 (ko) * | 2020-11-27 | 2022-09-28 | 경성대학교 산학협력단 | 비자성 차단부재를 구비한 이중 공극형 표면 영구자석 동기모터 |
WO2023105551A1 (ja) * | 2021-12-06 | 2023-06-15 | 三菱電機株式会社 | 回転電機、およびその回転電機を備えた航空機 |
KR20230140805A (ko) | 2022-03-30 | 2023-10-10 | 현대자동차주식회사 | 듀얼 로터 모터와 이를 이용한 하이브리드 파워트레인 |
CN114825826B (zh) * | 2022-06-24 | 2022-10-14 | 张家港华捷电子有限公司 | 组合式多功能双转子电机 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60166272U (ja) * | 1984-04-10 | 1985-11-05 | 株式会社安川電機 | 同心2軸アクチユエ−タ |
JP3881351B2 (ja) * | 2004-08-06 | 2007-02-14 | 三菱電機株式会社 | 電動パワーステアリング装置用モータ |
JP2015156801A (ja) * | 2012-02-08 | 2015-08-27 | 日本精工株式会社 | アクチュエータ |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5327778A (en) | 1976-08-25 | 1978-03-15 | Yamada Ind | Automatic block valve |
JPS5741606A (en) | 1980-08-26 | 1982-03-08 | Nippon Telegr & Teleph Corp <Ntt> | Reinforcing method of melt-stuck connection part |
JPS6062870U (ja) * | 1983-10-06 | 1985-05-02 | 株式会社安川電機 | 同心多軸アクチユエ−タ |
JP4196433B2 (ja) * | 1998-07-09 | 2008-12-17 | 日本精工株式会社 | 密閉型アクチュエータ |
JP2001298920A (ja) * | 2000-04-18 | 2001-10-26 | Tamagawa Seiki Co Ltd | 二軸同芯モータ |
US6472845B2 (en) * | 2000-08-07 | 2002-10-29 | Nissan Motor Co., Ltd. | Motor/generator device |
JP2006043153A (ja) * | 2004-08-04 | 2006-02-16 | Nidec Shibaura Corp | 洗濯機 |
US7750521B2 (en) | 2006-12-07 | 2010-07-06 | General Electric Company | Double-sided starter/generator for aircrafts |
KR101140924B1 (ko) * | 2010-06-23 | 2012-05-03 | 주식회사 아모텍 | 더블 스테이터-더블 로터형 모터 및 이를 이용한 세탁기의 직결형 구동 장치 |
US9080279B2 (en) | 2011-10-24 | 2015-07-14 | Lg Electronics Inc. | Washing machine to produce three-dimensional motion |
KR101951423B1 (ko) | 2012-10-09 | 2019-04-25 | 엘지전자 주식회사 | 듀얼드럼 세탁기의 서브드럼 구조 및 이를 이용한 서브드럼 결합방법 |
US9512551B2 (en) | 2011-10-24 | 2016-12-06 | Lg Electronics Inc. | Washing machine to produce three-dimensional motion |
TWM439589U (en) * | 2012-01-13 | 2012-10-21 | Tai-Liang Chen | Non-magnetic rotor and inner/outer stator electric power generation structure used for vehicle |
CN103051124B (zh) * | 2012-12-27 | 2015-03-11 | 上海伊节动力科技有限公司 | 无定子的两电刷双转子外圈永磁体同步电机 |
JP6428246B2 (ja) * | 2014-12-22 | 2018-11-28 | 日本精工株式会社 | アクチュエータ、工作機械、測定装置、半導体製造装置、及びフラットディスプレイ製造装置 |
-
2017
- 2017-07-18 WO PCT/JP2017/025989 patent/WO2018016496A1/ja active Application Filing
- 2017-07-18 CN CN201780045079.1A patent/CN109478836A/zh active Pending
- 2017-07-18 US US16/074,845 patent/US10432072B2/en active Active
- 2017-07-18 US US16/318,877 patent/US10594196B2/en active Active
- 2017-07-18 KR KR1020197001845A patent/KR102419884B1/ko active IP Right Grant
- 2017-07-18 CN CN201780045119.2A patent/CN109565229A/zh active Pending
- 2017-07-18 KR KR1020197001844A patent/KR102426462B1/ko active IP Right Grant
- 2017-07-18 JP JP2017561985A patent/JP6330183B1/ja active Active
- 2017-07-18 WO PCT/JP2017/025990 patent/WO2018016497A1/ja active Application Filing
- 2017-07-18 JP JP2017561984A patent/JP6323630B1/ja active Active
- 2017-07-21 TW TW106124478A patent/TWI642258B/zh active
- 2017-07-21 TW TW106124477A patent/TWI655829B/zh active
-
2018
- 2018-03-20 JP JP2018053484A patent/JP6915574B2/ja active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60166272U (ja) * | 1984-04-10 | 1985-11-05 | 株式会社安川電機 | 同心2軸アクチユエ−タ |
JP3881351B2 (ja) * | 2004-08-06 | 2007-02-14 | 三菱電機株式会社 | 電動パワーステアリング装置用モータ |
JP2015156801A (ja) * | 2012-02-08 | 2015-08-27 | 日本精工株式会社 | アクチュエータ |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2019187163A (ja) * | 2018-04-16 | 2019-10-24 | 日本精工株式会社 | 二軸一体型モータ及びアクチュエータ |
JP2019187166A (ja) * | 2018-04-16 | 2019-10-24 | 日本精工株式会社 | 二軸一体型モータ及びアクチュエータ |
JP2022190151A (ja) * | 2018-04-16 | 2022-12-22 | 日本精工株式会社 | 二軸一体型モータ及びアクチュエータ |
JP7509184B2 (ja) | 2018-04-16 | 2024-07-02 | 日本精工株式会社 | 二軸一体型モータ及びアクチュエータ |
Also Published As
Publication number | Publication date |
---|---|
TW201810884A (zh) | 2018-03-16 |
JP6330183B1 (ja) | 2018-05-30 |
CN109478836A (zh) | 2019-03-15 |
KR20190032371A (ko) | 2019-03-27 |
US10594196B2 (en) | 2020-03-17 |
US20190068035A1 (en) | 2019-02-28 |
KR102426462B1 (ko) | 2022-07-28 |
KR20190031241A (ko) | 2019-03-25 |
JPWO2018016497A1 (ja) | 2018-07-19 |
US10432072B2 (en) | 2019-10-01 |
JPWO2018016496A1 (ja) | 2018-07-19 |
JP6323630B1 (ja) | 2018-05-16 |
CN109565229A (zh) | 2019-04-02 |
TW201810882A (zh) | 2018-03-16 |
JP6915574B2 (ja) | 2021-08-04 |
TWI642258B (zh) | 2018-11-21 |
WO2018016497A1 (ja) | 2018-01-25 |
US20190190353A1 (en) | 2019-06-20 |
JP2018121520A (ja) | 2018-08-02 |
KR102419884B1 (ko) | 2022-07-12 |
TWI655829B (zh) | 2019-04-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP6323630B1 (ja) | 二軸一体型モータ | |
JP2009189163A (ja) | モータ | |
EP3101787B1 (en) | Resolver device, motor, and actuator | |
JP7110176B2 (ja) | ロータ位置感知装置およびこれを含むモータ | |
KR101597965B1 (ko) | 복합 자속을 이용한 모터 | |
US10637305B2 (en) | Double stator-type rotary machine | |
JP2013042635A (ja) | 回転電機の回転子、回転電機および回転子の端面部材 | |
JP5662737B2 (ja) | ハイブリッド型ステッピングモータ | |
JP7509184B2 (ja) | 二軸一体型モータ及びアクチュエータ | |
JP2010284036A (ja) | 永久磁石回転電機 | |
JP2019058039A (ja) | 回転電機 | |
WO2011036723A1 (ja) | 同期発電機 | |
JP7056307B2 (ja) | モータ | |
JP2012093101A (ja) | レゾルバロータ固定構造 | |
JP4706298B2 (ja) | レゾルバ装置 | |
JP2020145853A (ja) | 空芯コイル及び空芯コイルの製造方法並びにステータ | |
JP2019187163A (ja) | 二軸一体型モータ及びアクチュエータ | |
JP7533465B2 (ja) | ダイレクトドライブモータ | |
JP6229327B2 (ja) | モータ | |
JP2004260976A (ja) | 誘導電動機 | |
JP2009124860A (ja) | アキシャルギャップ型回転電機及び界磁子用コア | |
JP2013207825A (ja) | 可変リラクタンスモータ | |
JP2013207826A (ja) | 永久磁石モータ |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ENP | Entry into the national phase |
Ref document number: 2017561984 Country of ref document: JP Kind code of ref document: A |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 17831012 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 20197001844 Country of ref document: KR Kind code of ref document: A |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 17831012 Country of ref document: EP Kind code of ref document: A1 |