WO2014061359A1 - モールド電動機および空気調和機 - Google Patents
モールド電動機および空気調和機 Download PDFInfo
- Publication number
- WO2014061359A1 WO2014061359A1 PCT/JP2013/073562 JP2013073562W WO2014061359A1 WO 2014061359 A1 WO2014061359 A1 WO 2014061359A1 JP 2013073562 W JP2013073562 W JP 2013073562W WO 2014061359 A1 WO2014061359 A1 WO 2014061359A1
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- WIPO (PCT)
- Prior art keywords
- stator
- lead wire
- mold
- stator core
- lead
- Prior art date
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K29/00—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
- H02K29/06—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices
- H02K29/08—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices using magnetic effect devices, e.g. Hall-plates, magneto-resistors
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/02—Casings or enclosures characterised by the material thereof
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/12—Impregnating, heating or drying of windings, stators, rotors or machines
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/46—Fastening of windings on the stator or rotor structure
- H02K3/52—Fastening salient pole windings or connections thereto
- H02K3/521—Fastening salient pole windings or connections thereto applicable to stators only
- H02K3/522—Fastening salient pole windings or connections thereto applicable to stators only for generally annular cores with salient poles
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/08—Insulating casings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
- H02K5/225—Terminal boxes or connection arrangements
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2203/00—Specific aspects not provided for in the other groups of this subclass relating to the windings
- H02K2203/03—Machines characterised by the wiring boards, i.e. printed circuit boards or similar structures for connecting the winding terminations
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2203/00—Specific aspects not provided for in the other groups of this subclass relating to the windings
- H02K2203/12—Machines characterised by the bobbins for supporting the windings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2211/00—Specific aspects not provided for in the other groups of this subclass relating to measuring or protective devices or electric components
- H02K2211/03—Machines characterised by circuit boards, e.g. pcb
Definitions
- the present invention relates to a molded electric motor and an air conditioner.
- the conventional mold motor is configured to cover the stator core and the winding with the mold resin by injecting a mold resin such as BMC (Bulk Molding Compound) into a molding die that accommodates the stator core.
- a mold resin such as BMC (Bulk Molding Compound)
- BMC Bulk Molding Compound
- a restricting member is formed on the molding die, and this restricting member engages the lower side of the outer peripheral portion of the stator core so as not to move laterally.
- the movement of the stator core in the lateral direction is restricted. This maintains a uniform gap between the circumferential surface of the rotor insertion hole of the stator core and the central mold portion of the molding die, and a thin resin mold layer is formed on the circumferential surface of the rotor insertion hole. It is formed with a uniform thickness, the displacement of the bearing is suppressed, and the rotational efficiency of the mold motor is improved.
- the present invention has been made in view of the above, and an object thereof is to obtain a molded electric motor and an air conditioner capable of further improving quality.
- the present invention includes a stator core formed by laminating electromagnetic steel sheets, an insulating portion applied to the stator core, and a winding applied to the insulating portion.
- a mold motor formed by molding a stator with a power supply terminal connected to a power supply line for supplying power to the winding with a thermosetting resin, provided on the inner diameter side of the insulating portion
- the insulating inner wall has a plurality of inner wall projections formed at an axial end portion of the insulating inner wall on the side opposite to the stator core and in contact with a mold used when molding the stator. It is provided in the circumferential direction of the stator core.
- the inner wall protrusion formed on the end portion of the insulating inner wall on the anti-connection side is molded by supporting it with the mold, and the installation surface of the inner wall protrusion is disposed inside the bracket fitting portion.
- FIG. 1 is a perspective view showing a state before a sensor board is attached to a lead wire wiring component of a molded motor according to an embodiment of the present invention.
- FIG. 2 is a perspective view of a lead part for holding the sensor lead wire group.
- FIG. 3 is a perspective view of a lead part for dividing a lead wire.
- FIG. 4 is a perspective view of a lead part for holding the power supply lead wire group.
- FIG. 5 is a detailed view of the lead wire wiring component.
- FIG. 6 is a detailed view of the fourth frame portion of the guide frame.
- FIG. 7 is a detailed view of the lead wire introduction / holding portion of the lead wire wiring component.
- FIG. 8 is a detailed view of the temporarily fixed component.
- FIG. 9 is a diagram illustrating a state in which the lead parts are attached to the temporarily fixed parts.
- FIG. 10 is a perspective view before the lead wire wiring component is attached to the stator.
- FIG. 11 is a perspective view after the lead wire wiring component is attached to the stator.
- FIG. 12 is a diagram illustrating a plurality of inner wall protrusions formed on the insulating inner wall of the stator core.
- FIG. 13 is a diagram illustrating a state in which the temporarily fixed component is removed.
- FIG. 14 is a perspective view of the mold stator as viewed from the non-load side.
- FIG. 15 is a perspective view for explaining a mold stator molded by a mold core part having a stepped part.
- FIG. 16 is a cross-sectional view for explaining a mold stator molded by a mold core part having a stepped part.
- FIG. 17 is a perspective view for explaining a mold stator molded by a mold core part having a claw.
- FIG. 18 is a cross-sectional view for explaining a mold stator molded by a mold core part having claws.
- FIG. 19 is a perspective view for explaining a mold stator molded by a mold mandrel having protrusions.
- FIG. 20 is a cross-sectional view for explaining a mold stator molded by a mold mandrel having protrusions.
- FIG. 21 is a perspective view of a mold motor in which a rotor is incorporated in a mold stator.
- FIG. 22 is a configuration diagram of an air conditioner incorporating a molded electric motor.
- FIG. 1 is a perspective view showing a state before the sensor substrate 30 is attached to the lead wiring component 1 of the molded electric motor 100 according to the embodiment of the present invention.
- FIG. 2 is a perspective view of the lead-out component 70 for pressing the sensor lead wire group 23.
- FIG. 3 is a perspective view of the lead part 60 for partitioning the lead wires.
- FIG. 4 is a perspective view of the lead-out component 80 for holding the power supply lead wire group 24.
- FIG. 5 is a detailed view of the lead wire wiring component 1.
- FIG. 6 is a detailed view of the fourth frame portion 12 d of the guide frame body 12.
- FIG. 7 is a detailed view of the lead wire introduction / holding portion 17 of the lead wire wiring component 1.
- FIG. 8 is a detailed view of the temporary fixing component 40.
- FIG. 9 is a diagram illustrating a state in which the lead parts (60, 70, 80) are attached to the temporarily fixed part 40.
- FIG. 10 is a perspective view before the lead wire wiring component 1 is attached to the stator 50.
- FIG. 11 is a perspective view after the lead wire wiring component 1 is attached to the stator 50.
- FIG. 12 is a diagram illustrating a plurality of inner wall protrusions 56 formed on the insulating inner wall 52 of the stator core 57.
- FIG. 13 is a diagram illustrating a state in which the temporarily fixed component 40 is removed.
- FIG. 14 is a perspective view of the mold stator 90 as seen from the side opposite to the load.
- FIG. 15 is a perspective view for explaining a mold stator 90 ⁇ / b> A molded by a mold core part having a stepped part 131.
- FIG. 16 is a cross-sectional view for explaining a mold stator 90 ⁇ / b> A molded by a mold core part having a stepped part 131.
- FIG. 17 is a perspective view for explaining a mold stator 90 ⁇ / b> B molded by a mold mandrel having claw 135.
- FIG. 18 is a cross-sectional view for explaining a mold stator 90B molded by a mold core part having a claw.
- FIG. 19 is a perspective view for explaining a mold stator 90 ⁇ / b> C molded by a mold core part having a protrusion 136.
- FIG. 20 is a plan view for explaining a mold stator 90 ⁇ / b> C molded by a mold mandrel having a protrusion 136.
- FIG. 21 is a perspective view of a mold electric motor 100 in which the rotor shaft 102 is incorporated in the mold stator 90.
- FIG. 22 is a configuration diagram of an air conditioner incorporating the molded electric motor 100.
- the stator 50 includes a stator portion 59 and a lead wire wiring component 1.
- the stator portion 59 includes a stator core 57 formed by punching a magnetic steel sheet into a band shape, and laminating in the axial direction of the rotor shaft 102 (see FIG. 21) by caulking, welding, adhesion, and the like, and PBT (polybutylene terephthalate) ) Or the like is molded integrally with the stator core 57, or is assembled to the stator portion 59 after molding, and a winding formed by winding a magnet wire around the insulating portion 54. And a line 55.
- connection side the outer side of the end face in the axial direction of the stator core 57, that is, the side including the power supply terminal 58 is referred to as a connection side, and the opposite side is referred to as an anti-connection side.
- the insulating outer wall 53 of the stator core 57 prevents the winding 55 from falling to the outer peripheral side of the stator core 57, and the insulating inner wall 52 of the stator core 57 has the winding 55 connected to the inner peripheral side of the stator core 57. To prevent falling.
- a plurality of columnar (for example, octagonal column) mounting pins for mounting the sensor substrate 30 and the lead wire wiring component 1 to the stator portion 59 are provided on the axial end 53 a of the insulating outer wall 53. 51 is provided.
- a plurality of inner wall protrusions 56 extending in the axial direction are provided on the axial end portion 52a of the insulating inner wall 52 on the side opposite to the stator core 57 shown in FIG.
- the inner wall projections 56 are provided at approximately equal intervals in the circumferential direction of the stator core 57.
- four inner wall projections 56 are provided as an example. When the stator 50 is molded, these inner wall projections 56 abut against a die core part (a stepped part 131, a claw 135, or a projection 136 described later).
- the inner wall protrusion 56 is preferably formed such that its axial tip is equal to or less than the tip height of the axial end 53 a of the insulating outer wall 53 of the stator core 57.
- the tip of the axial end portion 53a of the insulating outer wall 53 is formed such that its height is slightly higher than the maximum height in the axial direction of the winding 55.
- the height in the axial direction (see FIG. 16) is formed so as to decrease from the insulating outer wall 53 toward the insulating inner wall 52.
- the height of the inner wall projection 56 that ensures a sufficient distance from the axial front end of the inner wall projection 56 to the winding 55 and not more than the height of the insulating outer wall 53 makes it possible to prevent the stator core 57 from reacting.
- the stator core 57 can be stably placed without the winding 55 hitting the mold core. As a result, productivity is improved and quality is improved.
- FIG. 1 shows a lead wire wiring component 1, a lead wire wiring assembly 20, a temporary fixing component 40, a lead-out component 70, and a sensor substrate 30.
- the lead wire assembly 20 includes a power lead group 24 that supplies power to the winding 55, a sensor lead group 23, a board-in connector 26 connected to the terminal of the power lead group 24, and a sensor lead group. And a board-in connector 25 connected to 23 terminals.
- the board-in connector 26 is provided with a terminal 26a
- the board-in connector 25 is provided with a terminal 25a.
- the length of the sensor lead wire group 23 from the lead wire lead-out portion 140 to the board-in connector 25 is equal to the length of the power supply lead wire group 24 from the lead wire lead-out portion 140 to the board-in connector 26. It is formed longer than the length of.
- the sensor substrate 30 has a function of an anti-stator side surface 34 on which the power supply pattern of the sensor substrate 30 is formed and a stator side surface 35 (see FIG. 9) on which electronic components such as the sensor circuit 33 are mounted. Independent. Therefore, in this embodiment, it is not necessary to electrically bond these substrate surfaces, and a non-through substrate can be used as the sensor substrate 30, thereby realizing low cost.
- the board-in connector 26 is installed on the stator side surface 35 of the sensor substrate 30, and the terminals 26 a provided on the board-in connector 26 are terminal insertion holes 36 formed in the sensor substrate 30 (see FIG. 1). Is exposed to the anti-stator side surface 34 of the sensor substrate 30 (see FIG. 10). Since the terminal insertion hole 36 and the power supply terminal hole 32 are connected by a power supply wiring pattern provided on the sensor substrate 30, the power supply lead wire group 24 and the winding are connected by soldering these terminals. 55 is electrically joined.
- the board-in connector 25 is installed on the side opposite to the stator 34 of the sensor board 30, and the terminals 25a provided on the board-in connector 25 are terminal insertion holes 37 formed in the sensor board 30 (see FIG. 1). ) To the stator side surface 35 of the sensor substrate 30 (see FIG. 9). Since the terminal insertion hole 37 and the power supply terminal hole 32 are connected by a wiring pattern provided in the sensor substrate 30, the terminals of the sensor lead wire group 23, the sensor circuit 33, etc. are connected by soldering these terminals. The electronic component is electrically joined.
- the lead wire wiring component 1 shown in FIG. 5 includes a first frame body 14, a second frame body 15, and a plurality of connecting portions 16 as main components.
- the first frame body 14 is formed in a substantially circular thin shape, and is disposed on the axial extension line of the insulating outer wall 53 on the connection side of the stator core 57.
- the first frame 14 is formed with a plurality of insertion holes 10, a plurality of movement pressing pins 11, a plurality of substrate pressing projections 5, and a plurality of outer periphery pressings 13, and a lead wire introduction holding portion 17. Is formed. Note that the number of insertion holes 10, movable presser pins 11, substrate presser protrusions 5, and outer periphery pressers 13 is not limited to the number shown in FIG. 5.
- connection side mounting pin 51 is inserted into the insertion hole 10, and when the lead wire wiring component 1 is attached to the stator portion 59 as shown in FIG. 11, the mounting pin 51 is welded in the insertion hole 10.
- the movable presser pin 11 is in contact with the axial end of the insulating outer wall 53 (see FIG. 11). Projecting from the frame 14 in the axial direction.
- the substrate pressing protrusion 5 is in contact with the anti-stator side surface 34 of the sensor substrate 30 (see FIG. 10). Is provided so as to protrude from the frame body 14 in the axial direction.
- the outer periphery presser 13 suppresses movement of the sensor substrate 30 in the radial direction (particularly in the outer peripheral direction of the stator 50) when the sensor substrate 30 is assembled to the lead wire wiring component 1, so that the outer periphery of the sensor substrate 30 is 38 (see FIG. 1), after extending radially outward from the first frame body 14, its tip is bent toward the stator 59 at a predetermined position.
- the lead wire wiring component 1 is provided with two outer periphery retainers 13. As shown in FIG. 1, the sensor substrate 30 has a notch 39 in which the outer periphery retainer 13 is fitted on the outer periphery 38. It is desirable to provide it. By configuring in this way, the outer periphery presser 13 enters the recess of the notch 39 (see FIG. 10), and thus the displacement of the sensor substrate 30 in the circumferential direction is suppressed. As a result, the work of assembling the lead wire wiring component 1 to which the sensor substrate 30 is attached to the stator portion 59 is facilitated, the productivity can be improved, the cost can be reduced, and the quality is improved as the productivity is improved. Will also improve.
- the lead wire introduction / holding portion 17 includes a guide frame body 12, a plurality of locking portions 9, a plurality of wiring projections (7a to 7c), and a plurality of wiring grooves (18a to 18e). ) And two temporarily fixed component installation grooves 8.
- the position of the sensor substrate 30 and the position of the lead wire lead-out portion 140 in the axial direction are different (see FIG. 16).
- a lead wire group (23, 24) is fixed to the lead wire lead-out portion 140 disposed near the outer peripheral surface of the stator portion 59 by the temporary fixing component 40, and these leads are fixed.
- the wire group (23, 24) is wired along the outer peripheral surface of the stator core 57 from the lead wire lead-out portion 140 toward the connection side of the stator core 57, and when it reaches the vicinity of the lead wire wiring component 1, the sensor substrate. It is necessary to guide to 30.
- the guide frame 12 shown in FIG. 7 fixes the lead wire group (23, 24) wired from the lead wire lead portion 140 to the lead wire wiring component 1 along the outer peripheral surface of the stator core 57 in this way. It is for bending toward the center side of the child part 59 and guiding it to the sensor substrate 30.
- the guide frame body 12 includes a first frame portion 12a, a second frame portion 12b, and a third frame portion 12c, and the opening 2 is formed at the center.
- the first frame portion 12a is provided on a part of the first frame body 14, and the first frame portion 12a protrudes toward the side opposite to the stator portion 59 side (the anti-stator portion side).
- a plurality of wiring projections 7b and 7c are provided.
- Wiring grooves are formed between these protrusions, and among these grooves, for example, four wiring grooves 18c from the left side of FIG. 7 have five lead wires constituting the sensor lead wire group 23. Four of the lead wires are held one by one. In the fifth wiring groove 18d from the left side of FIG. 7 (the groove provided between the wiring protrusion 7b and the wiring protrusion 7c), five lead wires constituting the sensor lead wire group 23 are provided. One of the lead wires and one of the three lead wires constituting the power supply lead wire group 24 are held in an overlapping manner in the vertical direction (see FIG. 10). Further, two lead wires out of the three lead wires constituting the power supply lead wire group 24 are held one by one in the two wiring grooves 18e from the right side of FIG.
- the second frame portion 12b extends radially outward from the first frame body 14, and a third frame portion 12c is provided at an end thereof.
- the third frame portion 12c is provided so as to connect the end portions of the two second frame portions 12b, and is provided, for example, on the outer side in the radial direction than on the axial extension line of the outer peripheral surface of the stator core 57.
- the third frame portion 12c is provided with a plurality of wiring projections 7a formed in a protruding shape toward the anti-stator portion side.
- a fourth frame portion 12d that is slightly smaller than the third frame portion is provided.
- the fourth frame portion 12d is provided with a plurality of wiring projections 7g and a plurality of wiring grooves 18f formed in a protruding shape toward the anti-stator portion.
- the third frame portion 12 c and the fourth frame portion 12 d constitute the bent wiring portion 6.
- the third frame portion 12 c guides the sensor lead wire group 23 wired in the axial direction from the lead wire lead-out portion 140 by bending it inside the lead wire wiring component 1.
- the fourth frame portion 12 d guides the power supply lead wire group 24 wired in the axial direction from the lead wire lead-out portion 140 by bending it inside the lead wire wiring component 1.
- the sensor lead wire group 23 is wired on the front side of FIG. 7, and the power supply lead wire group 24 is wired between the third frame portion 12c and the fourth frame portion 12d. Since the fourth frame portion 12d is closer to the stator center than the third bent portion 12c, the distance from the center of the lead wire wiring component 1 to the power supply lead wire group 24 is the sensor lead from the center of the lead wire wiring component 1.
- the distance is shorter than the distance to the line group 23.
- the fourth frame portion 12d is provided closer to the connection-side end surface of the stator core 57 than the third frame portion 12c, so that the third frame portion 12c is bent toward the lead wire wiring component 1 side.
- the distance from the sensor lead wire group 23 to the connection-side end surface of the stator core 57 (or the outer peripheral surface of the winding 55) is the power supply lead wire group bent to the lead wire wiring component 1 side by the fourth frame portion 12d. It becomes longer than the distance from 24 to the connection side end surface of the stator core 57.
- the sensor lead wire group 23 and the power supply lead wire group 24 are such that the distance from the center of the lead wire wiring component 1 and the distance from the connection side end face of the stator core 57 are different in the bent wiring portion 6. Wired to
- the first groove from the left side of FIG. 7 and the first groove from the right side of FIG. 7 are provided with temporarily fixed parts 40 (see FIG. 8).
- the locking portion 9 is provided on the third frame portion 12c at a predetermined distance, is formed in a hook shape, and its tip is formed in a hook shape for locking the temporarily fixed component 40.
- the second frame 15 shown in FIG. 5 has a substantially circular shape that is smaller than the inner diameter of the first frame 14 and larger than the outer diameter of the bearing insertion surface forming portion 137 (see FIG. 16) of the die core. And is disposed so as to face the mold core end surface 138 inside the first frame body 14.
- the second frame 15 is formed with a plurality of mold mold mandrel installation feet 4 that are formed in a projecting manner toward the stator 59 side.
- a plurality of substrate holding portions 3 are formed so as to protrude outward in the radial direction.
- the tip end portion of the mold die core portion installation foot 4 has a die core portion (FIGS. 16, 17, 19).
- the surface of the second frame 15 on the side of the stator core 57 is extended in the axial direction so as to be in contact with the die core end surface 138) shown in FIG.
- the substrate holding unit 3 engages with the stator side surface 35 of the sensor substrate 30 to hold the sensor substrate 30 in order to prevent displacement of the sensor substrate 30 in the radial direction and the axial direction when the stator 50 is molded. As shown (see FIG. 9), it is provided in a projecting shape on the radially outer side of the mold die core part installation foot 4.
- first frame body 14 and the second frame body 15 Between the first frame body 14 and the second frame body 15, a plurality of connecting portions 16 a, 16 b, 16 c extending radially from the second frame body 15 toward the first frame body 14 are provided. ing. The first frame body 14 and the second frame body 15 are integrally formed by these connecting portions 16a, 16b, and 16c.
- Each connecting portion 16a has a plurality of wiring projections 7e formed in a protruding shape toward the anti-stator portion side and a plurality of wiring protrusions 7e formed in a protruding shape toward the stator portion side. Are provided alternately. These wiring protrusions 7e hold the lead wires constituting the sensor lead wire group 23 with a predetermined distance therebetween.
- connection part 16a when there is no connection part 16a, there exists a possibility that it may be fixed in the state where each lead wire is in contact when the stator 50 is molded. In that case, there is a possibility that a gap is generated in a portion where each lead wire contacts. In this case, for example, moisture that has entered from the interface between the lead wire lead-out portion 140 (see FIG. 10) and the mold resin may travel through the gap between the lead wires and reach the sensor substrate 30.
- each lead wire constituting the sensor lead wire group 23 is held by the connecting portion 16a, each lead wire does not contact when the stator 50 is molded, and the above-described gap is formed. Can be suppressed. Therefore, moisture that has entered from the boundary surface between the lead wire lead-out portion 140 and the mold resin does not travel through the gaps between the lead wires and reach the sensor substrate 30, and as a result, quality can be improved.
- the connecting portion 16b is provided with a plurality of wiring projections 7f formed in a protruding shape toward the anti-stator portion side, so that the connecting portion 16b entered the mold stator 90 from the lead wire lead-out portion 140 side. Moisture does not travel through the gaps of the lead wires constituting the power supply lead wire group 24 and reach the sensor substrate 30, and as a result, quality can be improved.
- the sensor board 30 is attached to the lead wire wiring component 1 configured as described above, while the insertion hole 31 of the sensor board 30 and the insertion hole 10 of the lead wire wiring component 1 are aligned on the same axis. 30 is assembled to the lead wire wiring component 1.
- FIG. 9 shows a state where the sensor substrate 30 is assembled to the lead wire wiring component 1.
- a sensor lead wire group 23 is wired to the lead wire wiring component 1 to which the sensor substrate 30 is assembled, and the sensor lead wire group 23 wired to the third frame portion 12c is connected to the first frame portion 12a.
- the lead wire wiring component 1 is drawn in an arc shape in the clockwise direction when viewed from the side opposite to the stator.
- the board-in connector 25 is assembled to the sensor board 30.
- the power supply lead wire group 24 is wired to the fourth frame portion 12d, and the power supply lead wire group 24 wired to the fourth frame portion 12d is inserted into the wiring grooves 18d and 18e of the first frame portion 12a.
- the lead wire wiring component 1 is drawn in an arc shape in the counterclockwise direction when viewed from the anti-stator side.
- the board-in connector 26 is assembled to the sensor substrate 30.
- the sensor lead wire group 23 from the first frame 12a to the sensor substrate 30 is connected to the anti-stator part side and the stator part side of the connecting part 16a. They are wired alternately. By wiring in this way, the sensor lead wire group 23 can be kept at a predetermined position in the axial direction, and contact between the sensor lead wire group 23 and the winding 55 is prevented when the stator 50 is molded. In addition, since the sensor lead wire group 23 can be prevented from being exposed to the outer peripheral side of the mold stator 90, the quality can be improved.
- the four wiring projections 7b shown in FIG. The lead wire group 23 is formed so as to face the guide direction (left side of the first frame portion 12a in FIG. 7). With this configuration, wiring of the sensor lead wire group 23 is facilitated, productivity is improved, and costs can be reduced and quality can be improved.
- the surface of the two wiring projections 7c that contacts each lead wire of the power supply lead wire group 24 is the power supply lead wire group. It is formed so as to face 24 guide directions (the right side of the first frame portion 12a in FIG. 7). With this configuration, wiring of the power supply lead wire group 24 is facilitated, productivity is improved, and costs can be reduced and quality can be improved.
- the sensor lead wire group 23 and the power supply lead wire group 24 are branched in different directions, and each lead constituting the branched lead wire group (23, 24). Overlapping of the lines can be prevented and the wiring length of each lead wire can be minimized. Furthermore, since a space can be secured between the adjacent lead wires, moisture can be prevented from entering the sensor substrate 30 and quality can be improved.
- the connecting portion 45 extending in the axial direction, the installation foot 41 provided at the end of the connecting portion 45 and locked in the temporarily fixed component installation groove 8 (see FIG. 7), and the connecting portion 45 formed in the axial direction. And a locking hole 42.
- the width W1 in the longitudinal direction of the installation surface 43 is formed larger than the width W2 in the longitudinal direction of the lead-out component 70 shown in FIG.
- An engaging portion 72 provided in the lead-out component 70 is inserted into the locking hole 44.
- the end of the locking portion 9 (see FIG. 5) provided in the lead wire introduction holding portion 17 is inserted into the locking hole 42.
- the lead-out component 70 shown in FIG. 2 includes a stator mold upper mold pressing surface 71 formed in a substantially rectangular plate shape, and a fitting portion 73 provided on the short-side end surface of the stator mold upper mold pressing surface 71. .
- a plurality of grooves 74 for holding the sensor lead wire group 23 are formed on the lead wire side end surface 71 b of the stator mold upper mold pressing surface 71.
- the installation surface 43 of the temporarily fixed component 40 in FIG. 8 is in contact with the end surface 71a on the side opposite to the lead wire of the stator mold upper mold pressing surface 71.
- the fitting portion 73 is formed in an L shape, and the engaging portion 62 of the lead-out component 60 shown in FIG. 3 is attached to the fitting portion 73. Further, at one end of the fitting portion 73, an engagement portion 72 that is inserted into the locking hole 44 formed in the installation surface 43 of the temporarily fixed component 40 and engages with the installation surface 43 is formed.
- the lead part 60 shown in FIG. 3 is engaged with the lead wire fixing part 63 having a substantially rectangular plate shape, the engaging part 62 that is fastened to the fitting part 73 of the lead part 70, and the fitting part 81 of the lead part 80.
- the engaging part 61 is provided.
- a plurality of grooves 64 for holding the sensor lead wire group 23 are formed in the sensor lead wire side end surface 63a of the lead-out component 60.
- a plurality of grooves 65 for holding the power supply lead wire group 24 are formed in the power supply lead wire side end surface 63 b of the lead-out component 60.
- the lead part 80 shown in FIG. 4 includes a power supply lead wire fixing part 82 having a substantially rectangular plate shape, and a fitting part 81 that is locked to the engaging part 61 of the lead part 60.
- a plurality of grooves 83 for holding the power supply lead wire group 24 are formed in the power supply lead wire side end face 82 a of the power supply lead wire fixing portion 82.
- the lead wire lead-out portion 140 is prevented from coming into contact with the lead wire wiring component 1 and is transferred to the mold stator 90 along the boundary surface between the lead wire lead-out portion 140 and the mold resin.
- the lead wire lead-out portion 140 is temporarily fixed component 40 so that the lead wire from the bent wiring portion 6 of the lead wire wiring component 1 to the lead wire lead-out portion 140 does not become loose and does not become short. It is assembled to the lead wire wiring component 1 via
- FIG. 1 when the locking portion 9 of the lead wire introducing / holding portion 17 is inserted into the locking hole 42 of the temporary fixing component 40, the installation foot 41 of the temporary fixing component 40 is temporarily fixed to the lead wire introducing / holding portion 17. Fit into the installation groove 8. As a result, the temporarily fixed component 40 is temporarily fixed to the lead wire introduction holding portion 17. Next, the engaging portion 72 of the lead-out component 70 is inserted into the locking hole 44 of the temporarily fixed component 40. As a result, the lead-out component 70 is assembled to the lead wire wiring component 1 via the temporarily fixed component 40, and the lead-out component 70 is provided at a position separated from the lead wire wiring component 1 by a predetermined distance.
- FIG. 9 shows the sensor lead wire group 23 wired in this way.
- the lead-out component 60 is fitted into the L-shaped fitting portion 73 of the lead-out component 70 so as to slide outward from the center of the lead wire wiring component 1.
- the lead part 60 is assembled to the lead part 70.
- the sensor lead wire group 23 Since the direction in which the lead part 60 is slid is from the center of the lead wire wiring part 1 to the outside, the sensor lead wire group 23 is pulled in the sliding direction of the lead part 60 when the lead part 60 is assembled to the lead part 70. Therefore, the sensor lead wire group 23 is further pulled, and the distortion of each lead wire of the sensor lead wire group 23 is corrected. Therefore, the lead wires do not come into contact with each other when the stator 50 is molded, and the gaps between the lead wires as described above can be suppressed. As a result, moisture that has entered the mold stator 90 from the lead wire lead-out portion 140 side does not travel through the gaps of the lead wires constituting the sensor lead wire group 23 and reach the sensor substrate 30, so that the quality can be improved. Improvements can be made.
- the sensor lead wire group 23 is wound in the groove 65 of the lead-out component 60 while applying an appropriate tension so that the lead wires of the power supply lead wire group 24 do not come into contact with each other. Then, the fitting portion 81 of the lead-out component 80 is fitted into the engaging portion 61 of the lead-out component 60 so as to slide outward from the center of the lead wire wiring component 1. Thus, the fitting portion 81 is locked to the engaging portion 61, and the lead part 80 is assembled to the lead part 60.
- the sensor lead wire group 23 Since the direction in which the lead part 80 is slid is from the center of the lead wire wiring part 1 to the outside, the sensor lead wire group 23 is pulled in the sliding direction of the lead part 80 when the lead part 80 is assembled to the lead part 60. Therefore, the sensor lead wire group 23 is further pulled, and the distortion of each lead wire of the sensor lead wire group 23 is corrected. As a result, similar to the effect when the lead-out component 60 is assembled to the lead-out component 70, the moisture that has entered the mold stator 90 from the lead wire lead-out portion 140 side of each lead wire constituting the sensor lead wire group 23. It is possible to improve the quality without reaching the sensor substrate 30 through the gap.
- the lead wire assembly 20 is attached to the lead wire component 1 by the above procedure.
- the tube 21 that protects each lead wire is fixed by the binding band 22, but the timing for applying the binding band 22 is after the molding of the stator 50. Also good.
- the mounting pin 51 (see FIG. 10) provided on the stator core 57 is inserted into the insertion hole 10 of the lead wire wiring component 1 and the sensor substrate 30.
- the stator core 57 is assembled to the connection side.
- the lead wire wiring component 1 is fixed by welding the mounting pin 51 exposed to the side opposite to the stator of the lead wire wiring component 1, and the temporary assembly of the stator 50 is completed. To do.
- the mounting pin 51 is a substantially regular octagonal column, the corner of the mounting pin 51 contacts the circular insertion holes 10 and 31. Therefore, even when the fitting between the mounting pin 51 and the insertion holes 10 and 31 is tightened compared with the case where a circular pin is used, the contact portion is small, so the resistance when inserting the mounting pin 51 is reduced. Can be reduced. As a result, the sensor substrate 30 can be assembled to the stator portion 59 with high accuracy, and quality can be improved.
- the stator 50 is installed in a mold as shown in FIGS. 16, 17 and 19, and when the stator 50 is installed in the mold, the engaging portion 9 of the lead wire introduction holding portion 17 is engaged.
- the temporary fixing component 40 is removed from the lead wire lead-out portion 140 by removing the stopper or cutting the locking portion 9 (see FIG. 13), and then molded to obtain the mold stator 90 (FIG. 14). reference).
- the lead wire wiring component 1 is between the sensor substrate 30 and the lead wire wiring component 1 (that is, between the first frame body 14 and the anti-stator side surface 34, and between the second frame body 15 and the anti-stator side surface). 34), a predetermined amount of space is secured.
- the stator 50 when the stator 50 is molded, the stator side surface 35 and the anti-stator side surface 34 of the sensor substrate 30 are covered with the mold resin, so that the lead wire wiring component 1 that is a resin molded product and the sensor substrate 30 are formed. Contact is suppressed. Therefore, there is no possibility that the moisture that has entered through the boundary surface between the lead wire wiring component 1 and the mold resin reaches the sensor substrate 30, and the resistance to deterioration of the circuit portion of the sensor substrate 30 can be improved. Quality can be improved.
- the lead wire lead-out portion 140 When the stator 50 is molded, the lead wire lead-out portion 140 is pushed outward from the center of the stator 50 by the molding pressure. Therefore, the lead wire lead-out portion 140 does not contact the stator core 57, and the position fixed by the temporary fixing component 40 is maintained. Therefore, the gap between the lead wires when the lead wire lead-out portion 140 is fixed by the temporarily fixed component 40 does not become narrow, and the mold stator travels along the boundary surface between the lead wire lead-out portion 140 and the mold resin. Moisture permeating into 90 can be suppressed, and quality can be improved. Moreover, since the removed temporarily fixed component 40 can be reused, cost reduction is realizable.
- FIG. 16 shows a die core part (lower molding die core part) having a stepped part 131 for supporting the inner wall projection 56 when the stator 50 is molded.
- a stator core inner diameter fitting portion 134 that is formed to have a diameter substantially equal to the inner diameter of the stator 50 and is disposed on the inner diameter side of the stator 50, and a stator core inner diameter fitting are formed on the lower molding die core portion.
- a bracket fitting portion 130 having a diameter larger than that of the portion 134, and an inner diameter projection installation surface 98 on which the inner wall projection 56 is installed, which is smaller in diameter than the bracket fitting portion 130 and larger in diameter than the stator core inner diameter fitting portion 134.
- a stepped portion 131 that forms the shape.
- FIG. 15 shows a bracket fitting surface 95, a bracket installation surface 96, and an inner peripheral surface of the stepped portion 131 of the opening 94 of the mold stator 90A formed by the mold core shown in FIG. 97 and an inner diameter protrusion installation surface 98 are shown. That is, the opening 94 of the mold stator 90A has a bracket installation surface 96 and an inner diameter that is located closer to the stator core than the bracket installation surface 96 and is smaller in diameter than the bracket fitting surface 95 and larger in diameter than the stator core inner diameter. A protrusion installation surface 98 is formed. Then, an inner wall projection 56 is installed on the axial end surface of the inner diameter projection installation surface 98 as shown in FIG.
- the regulating member provided in the mold is installed on the outer peripheral portion of the stator, when molding the stator, the stator core (or the stator core insulating portion) supported by the regulating member and There is a problem in that a boundary surface is formed between the resin and the mold resin, and this boundary surface becomes a path of water intrusion into the mold stator, which may cause a deterioration in quality.
- the inner wall protrusion 56 provided on the insulating inner wall 52 is formed on the stepped part 131. It is installed on the surface forming the inner diameter protrusion installation surface 98. That is, there is no need to support the outer peripheral portion of the stator 50 with a mold (conventional regulating member), and when the bracket 103 is assembled to the bracket fitting portion 130 of the stator when the molded motor is assembled, No boundary surface is formed between the stator core and the mold resin on the outer periphery of the mold stator 90A. Therefore, the intrusion of water into the mold stator 90A is suppressed and the quality can be improved.
- FIG. 18 shows a mold core part having a claw 135 for supporting the inner wall projection 56 as a modification of the mold core part.
- a claw 135 is provided instead of the stepped portion 131, and the claw 135 is formed from a surface forming the bracket installation surface 96 so that the inner wall projection 56 can be installed.
- a predetermined amount of protrusion is formed in the axial direction on the stator side and on the outer peripheral side in the radial direction from the circumferential surface forming the stator core inner peripheral surface 132, and the inner wall projection 56 is installed.
- FIG. 17 shows a bracket fitting surface 95, a bracket installation surface 96, and a recess 99 of the opening 94 of the mold stator 90B formed by the mold core shown in FIG. .
- the recess 99 is formed by the claw 135. That is, the opening 94 of the mold stator 90B has a bracket installation surface 96, and extends from the bracket installation surface 96 to the stator core side and extends radially outward from the stator core inner peripheral surface 132.
- the recessed part 99 to be formed is formed.
- the inner wall protrusion 56 is installed in the axial direction bottom face of the recessed part 99 as FIG. 18 shows.
- the mold stator 90B also has the same effect as the mold stator 90A in a state where the bracket 103 is assembled to the bracket fitting portion 130 of the stator when the mold motor is assembled.
- FIG. 20 shows a mold core part having a protrusion 136 for supporting the inner wall protrusion 56 as a modification of the mold core part.
- a protrusion 136 is provided instead of the stepped part 131.
- a plurality of projections 136 are formed in the circumferential direction at a position spaced a predetermined distance from the circumferential surface forming the stator core inner circumferential surface 132 of the stator core inner diameter fitting portion 134 so that the inner wall projection 56 can be installed.
- the protrusions are formed in a protruding shape from the end surface forming the bracket installation surface 96 in the axial direction on the stator core side, and the inner wall projection 56 is installed on the protruding end surface.
- FIG. 19 shows a bracket fitting surface 95, a bracket installation surface 96, and a hole 93 of the opening 94 of the mold stator 90C formed by the mold core shown in FIG. Yes.
- the hole 93 is formed by the protrusion 136.
- the opening 94 of the mold stator 90C is positioned on the outer diameter side of the bracket installation surface 96 and the stator core inner peripheral surface 132, extends from the bracket installation surface 96 toward the stator core, and has a plurality in the circumferential direction.
- the hole 93 to be formed is formed.
- the inner-wall protrusion 56 is installed in the axial direction bottom face of the hole part 93, as FIG. 20 shows.
- the mold stator 90C also has the same effect as the mold stator 90A when the bracket 103 is assembled to the bracket fitting portion 130 of the stator when the mold motor is assembled.
- the rotor shaft 102 and other components are assembled to the mold stators 90A, 90B, and 90C by the bracket 103, so that the productivity is good and the quality is improved accordingly, and the cost is reduced.
- the molded electric motor 100 capable of performing the above is obtained.
- the bracket 103 shown in FIG. 21 is provided with a waterproof rubber 101 to prevent water from entering between the rotor shaft 102 and the bracket 103.
- FIG. 22 shows an air conditioner incorporating the molded electric motor 100 according to the present embodiment.
- the air conditioner includes an indoor unit 110 and an outdoor unit 120 connected to the indoor unit 110.
- the indoor unit 110 and the outdoor unit 120 are provided with a molded electric motor 100 as a drive source for the blower.
- the quality of the air conditioner can be improved by using the low-cost and high-quality molded motor 100 as a blower motor that is a main part of the air conditioner.
- the sensor lead wire group 23 is routed around the lead wire wiring component 1 in the clockwise direction, and the power supply lead wire group 24 is routed around the lead wire wiring component 1 in the counterclockwise direction.
- the lead directions of these lead wires may be reversed.
- the power supply lead wire group 24 is formed shorter than the sensor lead wire group 23, but the sensor lead wire group 23 may be formed shorter than the power supply lead wire group 24. In this case, the voltage drop due to the resistance of the power supply lead wire group 24 increases, but the above-described effect can be obtained.
- the molded motor 100 is applied to the stator core 57 formed by laminating electromagnetic steel plates, the insulating portion 54 applied to the stator core 57, and the insulating portion 54.
- This is a mold motor 100 in which a stator 50 having a winding 55 and a power supply terminal 58 to which a power supply line (24) for supplying power to the winding 55 is connected is molded with a thermosetting resin.
- the insulating inner wall 52 provided on the inner diameter side of the insulating portion 54 is formed at the axial end portion 52a of the insulating inner wall 52 on the side opposite to the stator core 57, and when the stator 50 is molded.
- a plurality of inner wall projections 56 that are in contact with the metal mold cores (stepped portion 131, claw 135, projection 136) to be used are provided in the circumferential direction of the stator core 57.
- the molded electric motor and the air conditioner according to the embodiment of the present invention show an example of the contents of the present invention, and can be combined with another known technique, and the gist of the present invention. Of course, it is possible to change and configure such as omitting a part without departing from the above.
- the present invention can be applied to a molded electric motor and an air conditioner, and is particularly useful as an invention capable of further improving quality.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Motor Or Generator Frames (AREA)
- Insulation, Fastening Of Motor, Generator Windings (AREA)
- Manufacture Of Motors, Generators (AREA)
- Other Air-Conditioning Systems (AREA)
Abstract
Description
図1は、本発明の実施の形態にかかるモールド電動機100のリード線配線部品1にセンサ基板30を取り付ける前の状態を示す斜視図である。図2は、センサリード線群23押え用の口出し部品70の斜視図である。図3は、リード線中仕切り用の口出し部品60の斜視図である。図4は、電源リード線群24押え用の口出し部品80の斜視図である。図5は、リード線配線部品1の詳細図である。図6は、案内枠体12の第4の枠部12dの詳細図である。図7は、リード線配線部品1のリード線導入保持部17の詳細図である。図8は、仮固定部品40の詳細図である。図9は、仮固定部品40に各口出し部品(60,70,80)を取り付けている状態を表す図である。図10は、固定子50にリード線配線部品1を取り付ける前の斜視図である。図11は、固定子50にリード線配線部品1を取り付けた後の斜視図である。図12は、固定子コア57の絶縁内壁52に形成された複数の内壁突起56を表す図である。図13は、仮固定部品40を取り外している状態を表す図である。図14は、モールド固定子90を反負荷側から見た斜視図である。図15は、段付き部131を備えた金型心金部でモールド成形されたモールド固定子90Aを説明するための斜視図である。図16は、段付き部131を備えた金型心金部でモールド成形されたモールド固定子90Aを説明するための断面図である。図17は、爪135を備えた金型心金部でモールド成形されたモールド固定子90Bを説明するための斜視図である。図18は、爪を備えた金型心金部でモールド成形されたモールド固定子90Bを説明するための断面図である。図19は、突起136を備えた金型心金部でモールド成形されたモールド固定子90Cを説明するための斜視図である。図20は、突起136を備えた金型心金部でモールド成形されたモールド固定子90Cを説明するための平面図である。図21は、モールド固定子90に回転子シャフト102を組み込んだモールド電動機100の斜視図である。図22は、モールド電動機100を内蔵した空気調和機の構成図である。
Claims (6)
- 電磁鋼板を積層して成る固定子コアと、固定子コアに施された絶縁部と、絶縁部に施された巻線と、前記巻線に電源を供給する電源線が結線される電源端子とを備えた固定子を、熱硬化性樹脂でモールド成形してなるモールド電動機であって、
前記絶縁部の内径側に設けられた絶縁内壁には、
前記固定子コアの反結線側において前記絶縁内壁の軸方向端部に形成され、かつ、前記固定子のモールド成形時に用いられる金型に当接する複数の内壁突起が、前記固定子コアの周方向に設けられていることを特徴とするモールド電動機。 - 前記内壁突起は、その軸方向先端が前記固定子コアの絶縁外壁の軸方向端部の先端高さ以下となるように形成されていることを特徴とする請求項1に記載のモールド電動機。
- 前記モールド固定子の開口部には、
ブラケット設置面と、
前記ブラケット設置面より固定子コア側に位置し、ブラケット嵌合い内周面より小径かつ固定子コア内径より大径となる内径突起設置面とが形成され、
前記内径突起設置面の軸方向端面には、
前記内壁突起が設置されることを特徴とする請求項1または2に記載のモールド電動機。 - 前記モールド固定子の開口部には、
ブラケット設置面と、
前記ブラケット設置面から固定子コア側に延び、かつ、固定子コア内周面から径外側に延び、周方向に複数形成される凹部とが形成され、
前記凹部の軸方向底面には、前記内壁突起が設置されていることを特徴とする請求項1または2に記載のモールド電動機。 - 前記モールド固定子の開口部には、
ブラケット設置面と、
固定子コア内周面よりも径外側に位置し、前記ブラケット設置面から固定子コア側に延び、周方向に複数形成される穴部とが形成され、
前記穴部の軸方向底面には、前記内壁突起が設置されていることを特徴とする請求項1または2に記載のモールド電動機。 - 請求項1~5の何れか1項に記載のモールド電動機を送風機に搭載したことを特徴とする空気調和機。
Priority Applications (5)
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US14/433,405 US9705375B2 (en) | 2012-10-15 | 2013-09-02 | Molded motor with insulation inner wall and air conditioner |
JP2014541988A JP5951036B2 (ja) | 2012-10-15 | 2013-09-02 | モールド電動機および空気調和機 |
EP13846624.8A EP2908408B1 (en) | 2012-10-15 | 2013-09-02 | Molded motor and air conditioner |
CN201380053452.XA CN104718684B (zh) | 2012-10-15 | 2013-09-02 | 模制电动机和空调机 |
CN201320635764.9U CN203632370U (zh) | 2012-10-15 | 2013-10-15 | 模制电动机和空调机 |
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JP2012228317 | 2012-10-15 | ||
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US (1) | US9705375B2 (ja) |
EP (1) | EP2908408B1 (ja) |
JP (1) | JP5951036B2 (ja) |
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KR102510385B1 (ko) | 2018-05-18 | 2023-03-16 | 한온시스템 주식회사 | 모터의 전자소자 고정 장치 및 이를 포함하는 모터 |
JPWO2021205652A1 (ja) * | 2020-04-10 | 2021-10-14 | ||
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Also Published As
Publication number | Publication date |
---|---|
CN203632370U (zh) | 2014-06-04 |
JP5951036B2 (ja) | 2016-07-13 |
US9705375B2 (en) | 2017-07-11 |
US20150263581A1 (en) | 2015-09-17 |
EP2908408A1 (en) | 2015-08-19 |
JPWO2014061359A1 (ja) | 2016-09-05 |
EP2908408B1 (en) | 2019-05-01 |
CN104718684A (zh) | 2015-06-17 |
CN104718684B (zh) | 2017-11-07 |
EP2908408A4 (en) | 2016-06-29 |
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