CN112202263A - Motor and compressor - Google Patents
Motor and compressor Download PDFInfo
- Publication number
- CN112202263A CN112202263A CN202010119576.5A CN202010119576A CN112202263A CN 112202263 A CN112202263 A CN 112202263A CN 202010119576 A CN202010119576 A CN 202010119576A CN 112202263 A CN112202263 A CN 112202263A
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- Prior art keywords
- lead
- outer flange
- winding
- stator
- flange portion
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- 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
- H02K3/50—Fastening of winding heads, equalising connectors, or connections thereto
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/32—Windings characterised by the shape, form or construction of the insulation
- H02K3/34—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation
- H02K3/345—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation between conductor and core, e.g. slot insulation
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/32—Windings characterised by the shape, form or construction of the insulation
- H02K3/38—Windings characterised by the shape, form or construction of the insulation around winding heads, equalising connectors, or connections thereto
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- 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
-
- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Insulation, Fastening Of Motor, Generator Windings (AREA)
Abstract
The present invention relates to a motor and a compressor. The invention provides a technology capable of preventing the movement of the 2 nd lead part connected with the neutral point of a stator winding in a short time. In the present invention, an outer flange portion (310) of a 1 st bobbin (300) disposed on one axial side of a stator core (200) has a plurality of 1 st slots (350) and a holding portion (380). The 2 nd lead portions (510B-530B) of the 1 st stator winding (510) to the 3 rd stator winding (530) are wound in the circumferential direction inside the outer flange portion (310) in a state of being connected in common. At least one of the 1 st lead portions (510A to 530A) of the 1 st stator winding (510) to the 3 rd stator winding (530) passes through the 1 st slot (350) and the inside of the 2 nd lead portions (510B to 530B) from the inside to the outside of the outer flange portion (310), and is connected to the wire collecting member (600) through the holding space (380A) of the holding portion (380).
Description
Technical Field
The present invention relates to a motor used in a compressor or the like, and more particularly to a technique for preventing a lead portion of a stator winding from moving.
Background
In compressors and the like, a motor of a concentrated winding system is used as a driving motor. A concentrated winding type motor is disclosed in, for example, japanese patent laid-open publication No. 2002 and 44892 (patent document 1).
The motor disclosed in patent document 1 includes a rotor and a stator.
The stator has: a stator core having a plurality of teeth; a coil bobbin having an insulating property and disposed on both sides of the stator core in an axial direction; and a stator winding. Preferably, the bobbin is made of a resin having insulating properties.
The coil bobbin has: an outer flange portion extending in a circumferential direction and an axial direction; a plurality of inner flange portions that are disposed radially inward of the outer flange portions and extend in the circumferential direction and the axial direction; and a plurality of body portions extending in the radial direction and connecting the outer flange portion and the plurality of inner flange portions.
The winding portion is formed by an electric wire wound around each tooth of the stator core. The stator winding has U-phase to W-phase stator windings. The U-phase to W-phase stator windings have a winding portion (e.g., a plurality of winding portions connected in series), a 1 st lead portion extending from one end (e.g., a winding start end), and a 2 nd lead portion extending from the other end (e.g., a winding end). The stator windings of the U-phase to W-phase are connected by a star connection. For example, the 1 st lead portion of the stator winding of the U-phase to W-phase is connected to the power source of the R-phase to T-phase via a cluster member (cluster), and the 2 nd lead portions are commonly connected to form a neutral point.
The 2 nd lead portions of the U-phase to W-phase stator windings are wound in the circumferential direction inside the outer flange portion of the coil bobbin in a commonly connected state. The 1 st lead portion of the U-phase to W-phase stator windings is led in the circumferential direction inside the outer flange portion of the bobbin, and then connected to the wire collecting member. The 1 st lead portion and the 2 nd lead portion are secured (fixed) to the bobbin by the binding wire in order to prevent movement due to vibration or the like at the time of conveyance.
Documents of the prior art
Patent document
Patent document 1: japanese laid-open patent publication No. 2002-44892
Disclosure of Invention
Problems to be solved by the invention
The operation of winding the electric wire around the teeth of the stator can be performed by a winding machine, but the operation of tightly binding the 1 st lead portion connected to the wire collecting member and the 2 nd lead portion forming the neutral point to the bobbin by the binding wire is difficult to perform by a machine. Therefore, the work of tightly binding the 1 st and 2 nd lead portions to the bobbin with the binding wire is manually performed by the operator. The work of tightly binding (fixing) the 1 st lead portion and the 2 nd lead portion to the bobbin with the binding wire is troublesome and takes time.
The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a technique capable of easily preventing, in a short time, the movement of the 2 nd lead portion, which is commonly connected to form a neutral point, of the stator winding.
Means for solving the problems
The invention 1 relates to an electric motor. A motor includes a stator core, a 1 st bobbin arranged on one axial side of the stator core, a 2 nd bobbin arranged on the other axial side of the stator core, and a stator winding. The 1 st and 2 nd bobbins are formed of a material having an insulating property, preferably a resin having an insulating property, and have an outer flange portion, a plurality of inner flange portions, and a plurality of body portions. The outer flange portion extends in the circumferential direction and the axial direction, the inner flange portion is disposed radially inward of the outer flange portion and extends in the circumferential direction and the axial direction, and the main body portion extends in the radial direction and connects the outer flange portion and the plurality of inner flange portions. A recess extending in the circumferential direction is formed by the outer flange portion, the inner flange portion, and the body portion.
The stator winding includes 1 st to 3 rd stator windings. The 1 st stator winding to the 3 rd stator winding typically correspond to stator windings of U-phase to W-phase. The 1 st to 3 rd stator windings have a winding portion, a 1 st lead portion extending from one of a winding start end and a winding end, and a 2 nd lead portion extending from the other of the winding start end and the winding end. The winding portion is formed of an electric wire wound around the teeth of the stator core. The winding start ends of the 1 st to 3 rd stator windings are the winding start ends of the electric wires forming the winding portion on the winding start side among the winding portions constituting the 1 st to 3 rd stator windings, and the winding end ends of the 1 st to 3 rd stator windings are the winding end ends of the electric wires forming the winding portion on the winding end side among the winding portions constituting the 1 st to 3 rd stator windings. The 1 st lead portion is connected to a line concentration member connectable to a power source, and the 2 nd lead portions are commonly connected to form a neutral point. That is, in the present invention, the 1 st stator winding to the 3 rd stator winding are connected by the star connection. Preferably, the connection portions of the 1 st lead portion and the 2 nd lead portion are covered with an insulating member such as an insulating film.
The outer flange of the 1 st bobbin has a plurality of 1 st slots. The 1 st groove communicates (extends in the radial direction) the inner peripheral surface and the outer peripheral surface of the outer flange portion and opens on the side opposite to the stator core.
The 2 nd lead portion is led around in the circumferential direction inside the outer flange portion in a commonly connected state.
At least one of the 1 st lead portions passes through the 1 st groove and the inside of the 2 nd lead portion connected in common to reach the outside from the inside of the outer flange portion. Thereby, the 2 nd lead portion is held (sandwiched) by the 1 st lead portion passing through the 1 st groove and the outer flange portion.
In the present invention, the movement of the 2 nd lead part can be prevented only by performing the operation of passing at least one of the 1 st lead parts of the 1 st to 3 rd stator windings through the inner side of the 2 nd lead part and the 1 st slot. That is, the work of preventing the 2 nd lead portion from moving can be easily performed in a short time.
In a different aspect of the 1 st invention, at least two of the 1 st lead parts pass through the inner side of the 2 nd lead part and the 1 st groove to reach the outer side from the inner side of the outer flange part. At least two of the 1 st lead parts pass through circumferentially separated portions inside the 2 nd lead part. That is, the 2 nd lead portion is held (sandwiched) by the 1 st lead portion and the outer flange portion at a circumferentially separated position.
In this embodiment, the 2 nd lead portion can be reliably prevented from moving.
In a different aspect of the invention 1, the outer flange portion of the 1 st bobbin has a holding portion. The holding portion has a wall portion extending in the circumferential direction and the axial direction and forming a holding space opened at both sides in the axial direction, outside the outer peripheral surface of the outer flange portion. The wall portion has an outer wall portion and a 1 st side wall portion and a 2 nd side wall portion that are arranged separately in a circumferential direction. A1 st side wall portion and a 2 nd side wall portion are provided continuously with an outer peripheral surface of the outer flange portion, the 1 st side wall portion and the 2 nd side wall portion extending in a radial direction and an axial direction. The outer wall portion is connected to a portion of the 1 st side wall portion and the 2 nd side wall portion on the opposite side of the outer peripheral surface of the outer flange portion, and extends in the circumferential direction and the axial direction.
At least one of the 1 st lead portions passes through the inner side of the 2 nd lead portion and the 1 st groove to reach the outer side from the inner side of the outer flange portion, and is connected to the wire collecting member through the holding space of the holding portion.
In the present embodiment, the 2 nd lead portion is more reliably held by the outer flange portion and at least one of the 1 st lead portions.
In a different aspect of the invention 1, the outer wall portion of the holding portion has an opening portion communicating in the axial direction and the radial direction. The opening of the outer wall is formed so that the 1 st lead portion can be inserted into the holding space in a state of extending in the axial direction.
In this embodiment, the 1 st lead portion can be easily inserted into the holding space.
In a different aspect of the invention 1, the 1 st and 2 nd side wall portions of the holding portion have the 1 st and 2 nd catching grooves that communicate in the circumferential direction (extend in the circumferential direction) and that are open on the stator core side. The 1 st locking groove of the 1 st side wall portion and the 2 nd locking groove of the 2 nd side wall portion are formed so that the 1 st lead portion can be locked in a state of extending in the circumferential direction.
One of the 1 st lead portions passes through the 1 st groove, reaches the outside from the inside of the outer flange portion, and is connected to the wire collecting member through the 1 st locking groove of the holding portion and the holding space. Further, the other of the 1 st lead portions passes through the 1 st groove, reaches the outside from the inside of the outer flange portion, and is connected to the wire collecting member through the 2 nd locking groove of the holding portion and the holding space. The movement of the 1 st lead portion passing through the holding space in the radial direction can be restricted by the 1 st locking groove and the 2 nd locking groove.
In this embodiment, the 1 st lead part can be held more reliably.
In a different aspect of the invention 1, the 1 st lead portion extends from a winding start end of the 1 st to 3 rd stator windings, and the 2 nd lead portion extends from a winding end of the 1 st to 3 rd stator windings. The holding portion is provided at a position corresponding to one of the winding start ends of the 1 st stator winding to the 3 rd stator winding.
The 2 nd lead portion is circumferentially routed through a portion corresponding to one of the winding start ends. The 1 st lead portion extending from one of the winding start ends is directly connected to the cluster member through the inside of the 2 nd lead portion. The 1 st lead portion extending from the remaining two of the winding start ends passes through the inner side of the 2 nd lead portion and the 1 st groove, reaches the outer side from the inner side of the outer flange portion, and is connected to the wire collecting member through the holding space of the holding portion.
The 1 st lead portion extending from the remaining two except one of the winding start ends passes through the inner side of the 2 nd lead portion and the 1 st groove to reach the outer side from the inner side of the outer flange portion, so that the 2 nd lead portion is sandwiched between the outer flange portion and the two 1 st lead portions. Further, the 1 st lead portion having rigidity extending from the remaining two of the winding start ends except for one is connected to the wire collecting member through the holding space of the holding portion, so that the wire collecting member is maintained in an upright state by the holding portion on the side opposite to the stator core. Thus, the 2 nd lead portion is sandwiched between the 1 st lead portion and the outer flange portion, the 1 st lead portion extending from one of the winding start ends and being connected to the cluster member through the inner side of the 2 nd lead portion. That is, the 2 nd lead portion is held (sandwiched) by the 1 st lead portion and the outer flange portion.
In this embodiment, the 1 st lead portion of the 1 st to 3 rd stator windings is connected to the line concentration member, and the remaining two are connected to the line concentration member via the 1 st slot and the holding space, and the movement of the 1 st lead portion and the 2 nd lead portion can be prevented only by performing this operation. That is, the work of preventing the 1 st lead part and the 2 nd lead part from moving can be easily performed in a short time.
In a different aspect of the invention 1, the 1 st to 3 rd stator windings have tooth-to-tooth transition portions.
The outer flange of the 2 nd bobbin has: a plurality of 2 nd slots, the plurality of 2 nd slots communicating with the inner peripheral surface and the outer peripheral surface and opening on a side opposite to the stator core; and a plurality of projections projecting radially outward from the outer peripheral surface. The plurality of 2 nd slots include 1 st to 3 rd slots having different depths in the axial direction from an end surface on the opposite side of the stator core. The plurality of protrusions include a 1 st group of protrusions to a 3 rd group of protrusions, and the distance from the 1 st group of protrusions to the 3 rd group of protrusions along the axial direction to the end surface on the opposite side of the stator core corresponds to the depth of the 1 st group of grooves to the 3 rd group of grooves.
The 1 st to 3 rd stator windings are routed in the circumferential direction around the outer peripheral surface of the outer flange portion while passing through different groups of slots from the inside to the outside and from the outside to the inside of the outer flange portion, and movement in the axial direction is restricted by different groups of protrusions.
In the present embodiment, the transition portions between the teeth of the 1 st to 3 rd stator windings can be easily wound in a state where contact is prevented.
The invention 2 relates to a compressor. In the compressor of the present invention, any one of the aforementioned motors is used as the motor for driving the compression mechanism section.
The compressor of the present invention has the same effects as the aforementioned motor.
ADVANTAGEOUS EFFECTS OF INVENTION
In the motor according to claim 1 and the compressor according to claim 2, the work of preventing the movement of the 2 nd lead portion, which is connected in common to form the neutral point, of the stator winding can be performed easily in a short time.
Drawings
Fig. 1 is a diagram showing a stator constituting an embodiment of the motor of the present invention.
Fig. 2 is a diagram showing a stator core constituting a stator of an electric motor according to an embodiment.
Fig. 3 is a view showing a 1 st bobbin constituting a stator of a motor according to an embodiment.
Fig. 4 is an enlarged view of a main portion of fig. 3.
Fig. 5 is a view obtained by viewing fig. 1 from the direction of arrow V.
Fig. 6 is an enlarged view of a main portion of fig. 1.
Fig. 7 is an enlarged view of a main portion of a 1 st bobbin constituting a stator of another embodiment of the motor of the present invention.
Description of the reference numerals
100. A stator; 200. a stator core; 200A, 200B, stator core end faces; 200a, a space inside the stator core; 210. a magnetic yoke; 220. teeth; 221. a tooth base; 222. a tip end portion of the tooth tip; 222a, a tooth tip end surface; 240. a stator slot; 240a, a groove opening; 290. a positioning recess; 300. a bobbin (1 st bobbin); 300A, a bottom surface; 300B, end face; 300a, a coil skeleton inner side space; 300b, a recess; 310. an outer flange portion; 310A, an outer peripheral surface; 310B, an inner peripheral surface; 320. an inner flange portion; 330. a main body portion; 350. 350a to 350f, a groove (1 st groove); 360. 360 a-360 c, a hook part; 380. a holding section; 380a, a holding space; 380b, 380c, an opening; 381. a wall member; 381a, a sidewall portion (1 st sidewall portion); 381b, a sidewall portion (2 nd sidewall portion); 381c, an outer wall portion; 382a, a locking groove (No. 1 locking groove); 382b, a locking groove (No. 2 locking groove); 390. a positioning projection; 400. a bobbin (2 nd bobbin); 400A, a bottom surface; 400B, end faces; 410. an outer flange portion; 420. an inner flange portion; 430. a main body portion; 450. 450A to 450C, a tank (tank 2); 460. 460A-460C, a protrusion; 500. a stator winding; 510-530, 1 st to 3 rd stator windings; 510A to 530A, the 1 st lead part; 510B to 530B, and the 2 nd lead portion; 510a to 530a, a winding start end; 510b to 530b, a winding end; 510c to 530c, a transition portion; 540. 551-553, an insulating member; 541. a joint portion; 600. a wire collecting member.
Detailed Description
Embodiments of the present invention are described below with reference to the drawings.
In the present specification, the term "axial direction" refers to an extending direction of a rotation center line (rotation center line P shown in fig. 2) passing through a rotation center of the rotor in a state where the rotor is disposed so as to be rotatable with respect to the stator. The term "circumferential direction" refers to a circumferential direction that is centered on the rotation center of the rotor when viewed from one side along the axial direction in a state where the rotor is rotatably arranged with respect to the stator. The term "radial direction" refers to a direction passing through the rotation center of the rotor when viewed from one side along the axial direction in a state where the rotor is rotatably disposed with respect to the stator. The "one circumferential side" indicates the arrow X side shown in fig. 1, and the "other circumferential side" indicates the arrow Y side shown in fig. 1. It is needless to say that the "one circumferential side" and the "other circumferential side" can be defined as opposite directions.
A stator 100 constituting an embodiment of the motor of the present invention will be described with reference to fig. 1 to 6. Fig. 1 is a perspective view of a stator 100. Fig. 2 is a perspective view of the stator core 200. Fig. 3 is a perspective view of the 1 st bobbin 300. Fig. 4 is an enlarged view of a main portion of the 1 st bobbin 300 shown in fig. 3. Fig. 5 is a view obtained by viewing fig. 1 from the direction of arrow V. Fig. 6 is an enlarged view of a main portion of fig. 1.
The motor of the present embodiment includes a rotor supported to be rotatable with respect to the stator 100, but is not shown in fig. 1. As the rotor, known rotors having various structures can be used.
The stator 100 includes a stator core 200, a stator winding 500, a 1 st bobbin 300 disposed on one axial side (upper side in fig. 1) of the stator core 200, and a 2 nd bobbin 400 disposed on the other axial side (lower side in fig. 1) of the stator core 200.
The stator core 200 is formed of a cylindrical laminate body in which a plurality of electromagnetic steel plates are laminated, and has a stator core end surface 200A on one axial side and a stator core end surface 200B on the other axial side.
As shown in fig. 2, the stator core 200 has a yoke 210 extending in the circumferential direction and a plurality of teeth 220 extending in the radial direction when viewed from one side in the axial direction. The teeth 220 have: a tooth base 221 extending radially inward from the yoke 210; and a tip end portion 222 provided radially inside the tooth base portion 221 and extending in the circumferential direction. A stator core inner space 200a into which the rotor is inserted is formed by a tooth tip end surface 222a on the radially inner side of the tooth tip end portion 222.
Further, positioning recesses 290 capable of fitting with positioning protrusions 390 are formed in the stator core end faces 200A and 200B, and the positioning protrusions 390 are formed on the bottom face 300A of the 1 st bobbin 300 and the bottom face 400A of the 2 nd bobbin 400.
The 1 st bobbin 300 is formed of a material having an insulating property. Preferably, it is formed of a resin having insulating properties (referred to as a "resin bobbin").
As shown in fig. 3, the 1 st bobbin 300 has an outer flange portion 310, a plurality of inner flange portions 320, and a plurality of body portions 330.
The outer flange portion 310 extends in the circumferential direction and the axial direction. The inner flange portion 320 is disposed radially inward of the outer flange portion 310 and extends in the circumferential direction and the axial direction. The body 330 extends in the radial direction and connects the outer flange 310 and the inner flange 320.
The inner flange 320 forms a bobbin inner space 300a, and the outer flange 310, the inner flange 320, and the body 330 form a recess 300b extending in the circumferential direction.
The 1 st bobbin 300 has a bottom surface 300A on the side opposite to the stator core end surface 200A of the stator core 200, and an end surface 300B on the side opposite to the bottom surface 300A. A positioning protrusion 390 is formed on the bottom surface 300A, and the positioning protrusion 390 can be fitted into the positioning recess 290 formed on the stator core end surface 200A of the stator core 200.
The 1 st coil former 300 is disposed on one axial side (the stator core end surface 200A side) of the stator core 200 such that the outer flange portion 310, the inner flange portion 320, and the body portion 330 face the yoke 210, the tooth tip end portion 222, and the tooth base portion 221 of the stator core 200. Specifically, the 1 st bobbin 300 is positioned on the stator core 200 by fitting the positioning protrusion 390 formed on the bottom surface 300A of the 1 st bobbin 300 into the positioning recess 290 formed on the stator core end surface 200A of the stator core 200.
The outer flange portion 310 has a plurality of slots 350, a plurality of hooks 360, and a retaining portion 380.
The groove 350 communicates with the outer circumferential surface 310A and the inner circumferential surface 310B of the outer flange portion 310 (extends in the radial direction), and opens on the side opposite to the bottom surface 300A (the side opposite to the stator core 200).
The hook portion 360 is formed in a hook shape by a 1 st portion and a 2 nd portion, the 1 st portion is provided continuously with the outer peripheral surface 310A of the outer flange portion 310 and extends outward in the circumferential direction and the radial direction, and the 2 nd portion is provided continuously with a portion of the 1 st portion opposite to the outer peripheral surface 310A and extends toward the bottom surface 300A in the circumferential direction and the axial direction. When the 2 nd to 2 nd lead portions 510B to 530B to be described later are circumferentially wound along the outer peripheral surface 310A of the outer flange 310, the 2 nd to 2 nd lead portions 510B to 530B pass between the outer peripheral surface 310A of the outer flange 310 and the hook portion 360, whereby the movement of the 2 nd to 2 nd lead portions 510B to 530B in the axial direction to the side opposite to the bottom surface 300A and the movement to the radial outside can be restricted. In fig. 3, hooks 360a to 360c are formed from one circumferential side (arrow X side) to the other circumferential side (arrow Y side).
As shown in fig. 4, the holding portion 380 has a wall member 381.
The wall member 381 has a 1 st side wall portion 381a, a 2 nd side wall portion 381b, and an outer wall portion 381 c. The 1 st side wall portion 381a is provided continuously with the outer peripheral surface 310A, extending in the radial and axial directions. The 2 nd side wall part 381b is disposed circumferentially apart from the 1 st side wall part 381a, and the 2 nd side wall part 381b is provided continuous with the outer peripheral surface 310A, extending in the radial and axial directions. In fig. 4, the 1 st side wall part 381a is arranged to be spaced apart from the 2 nd side wall part 381b in the circumferential direction (arrow X side). The outer wall portion 381c is connected to the 1 st and 2 nd side wall portions 381a and 381b on the side opposite to the outer peripheral surface 310A, and extends in the circumferential direction and the axial direction.
A holding space 380A extending in the axial direction and the circumferential direction and open on both sides in the axial direction is formed between the wall member 381 and the outer peripheral surface 310A by the wall member 381. The width in the radial direction, the length in the circumferential direction, the length in the axial direction, and the like of the holding space 380a are set so that the 1 st lead portion described later can be held while passing through the holding space 380a in the axial direction.
The outer wall portion 381c has an opening portion 380b communicating in the axial direction and the radial direction. The opening 380b is formed so that the 1 st lead portion can be inserted into the holding space 380a in a state of extending in the axial direction.
The 1 st side wall portion 381a has a 1 st locking groove 382a formed by cutting out portions of the bottom surface 300A side and the outer peripheral surface 310A side on the bottom surface 300A side, and the 2 nd side wall portion 381b has a 2 nd locking groove 382b formed by cutting out portions of the bottom surface 300A side and the outer peripheral surface 310A side on the bottom surface 300A side. The 1 st lead portion described later passes through the holding space 380a via the 1 st locking groove 382a or the 2 nd locking groove 382 b. The 1 st locking groove 382a and the 2 nd locking groove 382b are formed so that the 1 st lead portion can be locked therein. The movement of the 1 st lead portion in the radial direction is restricted by the 1 st catching groove 382a or the 2 nd catching groove 382 b.
The outer flange 310 has an opening 380c at a position corresponding to the holding space 380 a. The opening 380c will be described later.
Like the 1 st bobbin 300, the 2 nd bobbin 400 has an outer flange portion 410, an inner flange portion 420, and a body portion 430.
Similarly to the 1 st bobbin 300, the 2 nd bobbin 400 has a bottom surface 400A on the side facing the stator core 200, and an end surface 400B on the side opposite to the bottom surface 400A. As in the case of the 1 st bobbin 300, a positioning projection (not shown) is formed on the bottom surface 400A, and the positioning projection can be fitted into a positioning recess 290 formed on the stator core end surface 200B.
The 2 nd coil former 400 is disposed on the other axial side (the stator core end surface 200B side) of the stator core 200 such that the outer flange portion 410, the inner flange portion 420, and the body portion 430 face the yoke 210, the tooth tip end portion 222, and the tooth base portion 221 of the stator core 200.
The outer flange portion 410 has a plurality of grooves 450 and a plurality of protrusions 460.
The plurality of grooves 450 communicate with the outer circumferential surface 410A and the inner circumferential surface 410B of the outer flange portion 410 (extend in the radial direction), and the end surface 400B is open. The grooves 450 include a 1 st group of grooves 450A, a 2 nd group of grooves 450B, and a 3 rd group of grooves 450C, which have different depths in the axial direction from the end surface 400B.
The plurality of projections 460 project (protrude) radially outward from the outer peripheral surface 410A of the outer flange 410. The projections 460 include a 1 st group projection 460A, a 2 nd group projection 460B, and a 3 rd group projection 460C, and the distances from the end surface 400B in the axial direction of the 1 st group projection 460A, the 2 nd group projection 460B, and the 3 rd group projection 460C correspond to the depths of the 1 st to 3 rd group grooves 450A to 450C.
Stator winding 500 is formed of an electric wire wound around teeth 220 (specifically, tooth base 221) of stator core 200.
Specifically, the electric wire is wound around the teeth 220 of the stator core 200 in a state where the 1 st bobbin 300 is disposed on one axial side of the stator core 200 and the 2 nd bobbin 400 is disposed on the other axial side of the stator core 200. As the electric wire, a known electric wire can be used. For example, an electric wire including a conductor such as copper and an insulating coating layer covering the outer periphery of the conductor can be used.
The winding portion is formed by the electric wire wound around the teeth 220 of the stator core 200. The winding portion has a winding start end and a winding end.
In the present embodiment, the stator winding 500 includes a 1 st stator winding 510, a 2 nd stator winding 520, and a 3 rd stator winding 530. The 1 st stator winding 510, the 2 nd stator winding 520, and the 3 rd stator winding 530 typically correspond to a U-phase stator winding, a V-phase stator winding, and a W-phase stator winding.
The 1 st stator winding 510, the 2 nd stator winding 520, and the 3 rd stator winding 530 have winding portions, 1 st lead portions 510A, 520A, and 530A extending from winding start ends 510A, 520A, and 530A, and 2 nd lead portions 510B, 520B, and 530B extending from winding end ends 510B, 520B, and 530B.
Generally, the 1 st to 3 rd stator windings are formed of a plurality of winding portions. For example, by a plurality of winding sections connected in series. In this case, the 1 st lead portion extends from the winding start end of the winding portion on the winding start side, and the 2 nd lead portion extends from the winding end of the winding portion on the winding end side. The 1 st stator winding 510 to the 3 rd stator winding 530 have tooth-to-tooth transition portions 510c to 530 c.
Next, the processing of the 1 st to 1 st lead portions 510A to 530A extending from the winding start end 510A to the winding start end 530A and the 2 nd to 2 nd lead portions 510B to 530B extending from the winding end 510B to the winding end 530B of the 1 st to 3 rd stator windings 510 to 530 will be described with reference to fig. 1.
The holding portion 380 is provided at a portion corresponding to one of the winding start ends 510a to 530a of the 1 st to 3 rd stator windings 510 to 530. Preferably, when the winding start end 510a to the winding start end 530a are arranged along the circumferential direction, the holding portion 380 is provided at a position corresponding to the winding start end arranged at the center. In fig. 1, the holding portion 380 is disposed at a position corresponding to the winding start end 520a of the 2 nd stator winding 520, and the winding start end 520a of the 2 nd stator winding 520 is disposed between the winding start end 510a of the 1 st stator winding 510 and the winding start end 530a of the 3 rd stator winding 530.
The 2 nd lead portion 510B of the 1 st stator winding 510 passes through the slot 350a from the inside to the outside of the outer flange portion 310. Then, the outer peripheral surface 310A of the outer flange portion 310 is wound in the circumferential direction and hooked on the hook portions 360A, 360b, and 360 c. And further passes through the groove 350d from the outside of the outer flange portion 310 to the inside.
The 2 nd lead portion 520B of the 2 nd stator winding 520 passes through the slot 350B from the inside of the outer flange portion 310 to the outside. Then, the outer peripheral surface 310A of the outer flange portion 310 is wound in the circumferential direction and hooked to the hook portions 360b and 360 c. And further passes through the groove 350d from the outside of the outer flange portion 310 to the inside.
The 2 nd lead portion 530B of the 3 rd stator winding 530 passes through the slot 350c from the inside to the outside of the outer flange portion 310. Then, the outer peripheral surface 310A of the outer flange portion 310 is wound in the circumferential direction and hooked to the hook portion 360 c. And further passes through the groove 350d from the outside of the outer flange portion 310 to the inside.
The 2 nd lead portion 510B and the 2 nd lead portion 520B are bundled by the hook portion 360B, and the 2 nd lead portion 510B to the 2 nd lead portion 530B are bundled by the hook portion 360 c.
Generally, the electric wire is wound around the teeth 220 with a strong force. Therefore, a strong force acts on the 2 nd to 2 nd lead portions 510B to 530B extending from the winding end 510B to 530B in the rewinding direction.
In this mode, the 2 nd to 2 nd lead portions 510B to 530B pass through the groove 350 twice (the 2 nd lead portion 510B passes through the grooves 350a and 350d, the 2 nd lead portion 520B passes through the grooves 350B and 350d, and the 2 nd lead portion 530B passes through the grooves 350c and 350d), and are bundled by the hooks 360B and 360 c. This prevents the 2 nd to 2 nd lead portions 510B to 530B from moving in the rewinding direction.
The 2 nd lead portion 510B to the 2 nd lead portion 530B that have passed through the groove 350d are connected together at the tip end side to form a neutral point. The connection portion (neutral point) is covered with an insulating member 540. As the insulating member 540, for example, an insulating member in which a known insulating film is wound in a cylindrical shape and a joint portion 541 is formed at one end can be used.
The 2 nd to 2 nd lead portions 510B to 530B are led around in the circumferential direction on the inner side (inside the recess 300B) of the outer flange portion 310 in a state where the connection portion is covered with the insulating member 540. At this time, the insulating member 540 is wound so as to pass through a portion corresponding to the winding start end 520a of the 2 nd stator winding 520 (a portion corresponding to the holding portion 380).
In the case of using an insulating member in which an insulating film is wound in a cylindrical shape as the insulating member 540, a fold is formed when the insulating member 540 is wound in the circumferential direction inside the outer flange portion 310. By disposing the folded portion of the insulating member 540 in the opening 380c, the insulating member 540 can be brought close to the inner peripheral surface 310B of the outer flange 310, and the opening 380c is formed in the outer flange 310 at a position corresponding to the holding portion 380. Thus, the insulating member 540 can be reliably held (sandwiched) by the 1 st to 1 st lead portions 510A to 530A and the outer flange 310 (described in detail later).
The 1 st lead portion 510A to the 1 st lead portion 530A of the 1 st stator winding 510 to the 3 rd stator winding 530 are covered with an insulating member 551 to an insulating member 553. As the insulating members 551 to 553, insulating members formed by forming a known resin film into a cylindrical shape can be used.
The 1 st lead portion 510A (insulating member 551) of the 1 st stator winding 510 is wound in the circumferential direction (in fig. 1, in the other direction in the circumferential direction) so as to pass through the inside of the insulating member 540. Then, the flange reaches the outside from the inside of the outer flange portion 310 through the groove 350e provided on the circumferential side of the holding portion 380. The 1 st locking groove 382a of the 1 st side wall portion 381a of the holding portion 380 disposed on the circumferential side and the holding space 380a are passed through, and then connected to the wire collecting member 600.
As a method of passing the 1 st lead portion 510A through the 1 st locking groove 382a and the holding space 380A, the following method can be used. The 1 st lead portion 510A is inserted into the holding space 380A through the opening 380b in a state of being arranged parallel (including substantially parallel) to the axial direction of the opening 380 b. Then, by pulling the 1 st lead part 510A to the side opposite to the stator core 200, the 1 st lead part 510A passes through the 1 st locking groove 382a and the holding space 380A. The movement of the 1 st lead part 510A in the radial direction is restricted by the 1 st catching groove 382 a.
In addition, the 1 st lead portion 530A (insulating member 553) of the 3 rd stator winding 530 is led around in the circumferential direction (in fig. 1, in the circumferential direction) so as to pass through the inside of the insulating member 540. Then, the outer flange 310 extends from the inside to the outside through the groove 350f provided on the other circumferential side of the holding portion 380. The holding portion 380 is connected to the wire concentrating member 600 after passing through the 2 nd locking groove 382b of the 2 nd side wall portion 381b disposed on the other circumferential side and the holding space 380 a.
As a method of passing the 1 st lead portion 530A through the 2 nd locking groove 382b and the holding space 380A, the same method as that of passing the 1 st lead portion 510A through the 1 st locking groove 382a and the holding space 380A can be used.
In addition, the 1 st lead portion 520A (insulating member 552) of the 2 nd stator winding 520 is connected to the wire concentrating member 600 after being led around inside the insulating member 540.
The 1 st lead portion 510A of the 1 st stator winding 510 passes through the groove 350e, the 1 st locking groove 382a, and the holding space 380A, and presses the insulating member 540 in the direction toward the outer flange portion 310. Thus, the portion of the insulating member 540 on the one side (arrow X side) in the circumferential direction from the winding start end 520A (1 st lead portion 520A) is sandwiched between the 1 st lead portion 510A and the outer flange 310.
The 1 st lead portion 530A of the 3 rd stator winding 530 presses the insulating member 540 toward the outer flange portion 310 through the groove 350f, the 2 nd locking groove 382b, and the holding space 380A. Thus, the portion of the insulating member 540 on the other circumferential side (arrow Y side) than the winding start end 520A (1 st lead portion 520A) is sandwiched between the 1 st lead portion 530A and the outer flange 310.
Further, since the 1 st lead portion 510A and the 1 st lead portion 530A have rigidity, the wire collecting member 600 connected to the 1 st lead portion 510A and the 1 st lead portion 530A is held in a standing state by the holding portion 380 on the side opposite to the stator core 200. Therefore, the 1 st lead portion 520A of the 2 nd stator winding 520 is connected to the wire collecting member 600, and the insulating member 540 is pressed toward the outer flange portion 310. Thereby, a portion of the insulating member 540 corresponding to the winding start end 520A (a portion corresponding to the holding portion 380) is sandwiched between the 1 st lead portion 520A and the outer flange portion 310.
Next, the processing of the tooth-to-tooth transition portions 510c to 530c of the 1 st to 3 rd stator windings 510 to 530 will be described with reference to fig. 1.
In the present embodiment, the transition portions 510c to 530c are routed in the circumferential direction on the outer peripheral surface 410A of the outer flange portion 410 of the 2 nd bobbin 400.
The transition portions 510c to 530c pass through the 2 nd groove 450, reach the outside from the inside of the outer flange portion 410, are routed in the circumferential direction around the outer peripheral surface 410A of the outer flange portion 410, and then pass through the 2 nd groove 450 from the outside of the outer flange portion 410 to the inside. At this time, the transition portions 510C to 530C pass through the grooves of a group selected from the grooves 450A to 450C of the 1 st group to the 3 rd group without overlapping in the axial direction. When the outer peripheral surface 410A of the outer flange portion 410 is routed between the grooves of the same group in the circumferential direction, the protrusions 460A to 460C of the 1 st group to the 3 rd group prevent the transition portions 510C to 530C from approaching in the axial direction.
In the present embodiment, the 1 st stator winding 510 to the 3 rd stator winding 530 are connected in common with the 2 nd to 2 nd lead portions 510B to 530B wound in the circumferential direction inside the outer flange portion 310, and both of the 1 st lead portions 510A and 530A of the 1 st to 1 st lead portions 510A to 530A are passed through the inside of the 2 nd to 2 nd lead portions 510B to 530B, whereby the movement of the 2 nd lead portion can be prevented by performing this operation.
Fig. 7 shows a 1 st bobbin 300 of a stator of another embodiment of the motor of the present invention. Fig. 7 is an enlarged view of a main portion of the 1 st bobbin 300. In the present embodiment, the holding portion 380 provided in the outer flange portion 310 of the 1 st bobbin 300 is different from the holding portion shown in fig. 4 in structure. That is, the wall member 381 constituting the holding portion 380 of the present embodiment has the 1 st side wall portion 381a, the 2 nd side wall portion 381b, and the outer wall portion 381c, but the 1 st side wall portion 381a and the 2 nd side wall portion 381b do not have the 1 st locking groove 382a and the 2 nd locking groove 382b shown in fig. 4.
In the present embodiment, the 1 st lead portion 510A and the 1 st lead portion 530A pass through the 1 st groove 350 from the inside to the outside of the outer flange portion 310, and are connected to the wire collecting member 600 through the holding space 380A of the holding portion 380.
In the present embodiment, the 2 nd to 2 nd lead portions 510B to 530B are also held by the 1 st lead portions 510A and 530A.
In the above embodiment, the 1 st to 1 st lead portions 510A to 530A and the outer flange portion 310 hold (sandwich) the 2 nd to 2 nd lead portions 510B to 530B of the 1 st to 3 rd stator windings 510 to 530, but a configuration in which at least one of the 1 st to 1 st lead portions 510A to 530A and the outer flange portion hold (sandwich) may be used.
Further, the configuration is employed in which the 1 st lead portions 510A, 530A pass through the 2 nd lead portions 510B to 2 nd lead portions 530B and the 1 st groove 350 to reach from the inside to the outside of the outer flange 310 and pass through the holding space 380A of the holding portion 380, but a configuration may be employed in which at least one of the 1 st lead portions 510A to 1 st lead portions 530A passes through the 2 nd lead portions 510B to 2 nd lead portions 530B and the 1 st groove 350 to reach from the inside to the outside of the outer flange 310.
As a means for passing the 1 st to 1 st lead portions 510A to 530A through the 2 nd to 2 nd lead portions 510B to 530B and winding them, various means can be used.
The present invention is not limited to the configurations described in the embodiments, and various changes, additions, and deletions can be made.
In the embodiment, the motor is described, but the present invention may be configured as a compression mechanism and a motor that drives the compression mechanism.
The insulating member covering the connection portion of the 2 nd lead portion and the insulating member covering the 1 st lead portion may be omitted.
Although the transition portion is routed on the 2 nd bobbin side, routing can be performed on the 1 st bobbin side.
The method (such as the region) of winding the 1 st lead portion of the 1 st to 3 rd stator windings inside the 2 nd lead portion is not limited to the method described in the embodiment.
The method of winding the 2 nd lead portion of the 1 st to 3 rd stator windings is not limited to the method described in the embodiment.
The structure of the holding portion is not limited to the structure described in the embodiment.
Claims (8)
1. An electric motor having a stator core, a 1 st bobbin arranged on one axial side of the stator core, a 2 nd bobbin arranged on the other axial side of the stator core, and a stator winding,
each of the 1 st bobbin and the 2 nd bobbin has an outer flange portion extending in a circumferential direction and an axial direction, a plurality of inner flange portions arranged radially inward of the outer flange portion and extending in the circumferential direction and the axial direction, and a plurality of body portions extending radially and connecting the outer flange portion and the plurality of inner flange portions,
the stator winding is provided with a 1 st stator winding to a 3 rd stator winding,
the 1 st to 3 rd stator windings have winding portions wound around teeth of the stator core, a 1 st lead portion extending from one of a winding start end and a winding end, and a 2 nd lead portion extending from the other of the winding start end and the winding end, the 1 st lead portion being connected to a line concentration member connectable to a power supply, the 2 nd lead portions being commonly connected to form a neutral point,
the electric motor is characterized in that it is provided with,
the outer flange portion of the 1 st bobbin has a plurality of 1 st slots, the plurality of 1 st slots communicating with an inner peripheral surface and an outer peripheral surface and opening on a side opposite to the stator core,
the 2 nd lead portion is led around in the circumferential direction inside the outer flange portion in a commonly connected state,
at least one of the 1 st lead portions passes through the 1 st groove and the inside of the 2 nd lead portion connected in common to reach from the inside to the outside of the outer flange portion.
2. The motor according to claim 1,
at least two of the 1 st lead parts pass through the 1 st groove and the inside of the 2 nd lead part connected in common to reach from the inside to the outside of the outer flange part,
the at least two of the 1 st lead portions pass through circumferentially separated locations inside the 2 nd lead portions that are commonly connected.
3. The motor according to claim 1 or 2,
the outer flange portion of the 1 st bobbin has a holding portion,
the holding portion has a wall portion extending in a circumferential direction and an axial direction and forming a holding space opened at both sides in the axial direction, on an outer side of the outer peripheral surface of the outer flange portion,
the wall portion has a 1 st side wall portion, a 2 nd side wall portion and an outer wall portion,
the 1 st side wall portion is provided continuously with the outer peripheral surface of the outer flange portion, the 1 st side wall portion extending in a radial direction and an axial direction,
the 2 nd side wall portion is disposed circumferentially apart from the 1 st side wall portion, provided in connection with the outer peripheral surface of the outer flange portion, the 2 nd side wall portion extending in the radial and axial directions,
the outer wall portion is connected to a portion of the 1 st side wall portion and the 2 nd side wall portion on a side opposite to the outer peripheral surface of the outer flange portion and extends in a circumferential direction and an axial direction,
the at least one of the 1 st lead part is connected to the wire collecting member through a holding space of the holding part from an inner side to an outer side of the outer flange part via an inner side of the 2 nd lead part and the 1 st groove which are connected in common.
4. The motor according to claim 3,
the outer wall portion has an opening portion communicating in the axial direction and the radial direction.
5. The motor according to claim 3 or 4,
the 1 st side wall portion has a 1 st locking groove, the 1 st locking groove communicating in the circumferential direction and opening to a side of the stator core,
the 2 nd side wall portion has a 2 nd locking groove, the 2 nd locking groove communicating in the circumferential direction and opening to the side of the stator core,
one of the 1 st lead portions passes through the 1 st groove of the outer flange portion from the inside to the outside of the outer flange portion, and is connected to the wire collecting member through the 1 st locking groove of the holding portion and the holding space,
the other of the 1 st lead portions passes through the 1 st groove of the outer flange portion from the inside to the outside of the outer flange portion, and is connected to the wire collecting member through the 2 nd locking groove of the holding portion and the holding space.
6. The motor according to any one of claims 3 to 5,
the 1 st lead portion extends from the winding start end of the 1 st to 3 rd stator windings, the 2 nd lead portion extends from the winding end of the 1 st to 3 rd stator windings,
the holding part is provided at a position corresponding to one of the winding start ends of the 1 st to 3 rd stator windings,
the 2 nd lead portion is circumferentially led around through a portion corresponding to the one of the winding start ends,
the 1 st lead part extending from the one of the winding start ends is directly connected with the cluster member through an inner side of the 2 nd lead part connected in common,
the 1 st lead part extending from the remaining two of the winding start ends passes through the 1 st groove and the inside of the 2 nd lead part connected in common to reach the outside from the inside of the outer flange part, and is connected to the wire collecting member through the holding space of the holding part.
7. The motor according to any one of claims 1 to 6,
the 1 st stator winding to the 3 rd stator winding have transition parts between teeth,
the outer flange portion of the 2 nd bobbin includes: a plurality of 2 nd slots, the plurality of 2 nd slots communicating with the inner peripheral surface and the outer peripheral surface and opening on a side opposite to the stator core; and a plurality of projections projecting radially outward from the outer peripheral surface,
the plurality of 2 nd slots include 1 st to 3 rd slots having different depths in the axial direction from an end surface on the opposite side of the stator core,
the plurality of protrusions include 1 st to 3 rd groups of protrusions, and the distance from the 1 st to 3 rd groups of protrusions to the end surface opposite to the stator core along the axial direction corresponds to the depth of the 1 st to 3 rd groups of grooves,
the transition portions of the 1 st to 3 rd stator windings extend from the inner side to the outer side and from the outer side to the inner side of the outer flange portion through the 1 st to 3 rd groups of slots so as not to overlap in the axial direction, and are circumferentially routed on the outer peripheral surface of the outer flange portion in a state of being separated by the 1 st to 3 rd groups of protrusions.
8. A compressor having a compression mechanism portion and a motor for driving the compression mechanism portion,
the compressor is characterized in that it is provided with,
the motor according to any one of claims 1 to 5 is used as the motor.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019-127249 | 2019-07-08 | ||
| JP2019127249A JP7075376B2 (en) | 2019-07-08 | 2019-07-08 | Motors and compressors |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112202263A true CN112202263A (en) | 2021-01-08 |
| CN112202263B CN112202263B (en) | 2023-07-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010119576.5A Active CN112202263B (en) | 2019-07-08 | 2020-02-26 | Motor and compressor |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP7075376B2 (en) |
| CN (1) | CN112202263B (en) |
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| CN102457122A (en) * | 2010-10-21 | 2012-05-16 | 艾默生电气公司 | End caps for stator segments of segmented stator assemblies |
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| JP2014007799A (en) * | 2012-06-21 | 2014-01-16 | Aichi Elec Co | Stator |
| DE102012020329A1 (en) * | 2012-10-17 | 2014-04-17 | Sew-Eurodrive Gmbh & Co Kg | Electromotor has winding wire portion that is clipped into holding portion, in positively locking manner, for receiving winding wire whose end portions are connected together in accordance with connections of windings of stator |
| CN203911622U (en) * | 2013-04-26 | 2014-10-29 | 大金工业株式会社 | Motor and compressor |
| JP2018133952A (en) * | 2017-02-17 | 2018-08-23 | 日立ジョンソンコントロールズ空調株式会社 | Stator and compressor |
| JP2018153058A (en) * | 2017-03-15 | 2018-09-27 | アイチエレック株式会社 | Insulator, stator and electric motor |
| CN109088497A (en) * | 2018-08-20 | 2018-12-25 | 珠海凯邦电机制造有限公司 | Insulation framework, stator module, motor |
| CN109937521A (en) * | 2016-11-16 | 2019-06-25 | 三菱电机株式会社 | Rotating electric machine |
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2019
- 2019-07-08 JP JP2019127249A patent/JP7075376B2/en active Active
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2020
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|---|---|---|---|---|
| CN102457122A (en) * | 2010-10-21 | 2012-05-16 | 艾默生电气公司 | End caps for stator segments of segmented stator assemblies |
| CN102801242A (en) * | 2011-05-23 | 2012-11-28 | 三菱电机株式会社 | Rotary electric machine |
| JP5110212B1 (en) * | 2012-01-31 | 2012-12-26 | 株式会社富士通ゼネラル | Electric motor |
| JP2014007800A (en) * | 2012-06-21 | 2014-01-16 | Aichi Elec Co | Electric motor and compressor |
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| DE102012020329A1 (en) * | 2012-10-17 | 2014-04-17 | Sew-Eurodrive Gmbh & Co Kg | Electromotor has winding wire portion that is clipped into holding portion, in positively locking manner, for receiving winding wire whose end portions are connected together in accordance with connections of windings of stator |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN112202263B (en) | 2023-07-21 |
| JP7075376B2 (en) | 2022-05-25 |
| JP2021013272A (en) | 2021-02-04 |
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