CN112202263B - Motor and compressor - Google Patents
Motor and compressor Download PDFInfo
- Publication number
- CN112202263B CN112202263B CN202010119576.5A CN202010119576A CN112202263B CN 112202263 B CN112202263 B CN 112202263B CN 202010119576 A CN202010119576 A CN 202010119576A CN 112202263 B CN112202263 B CN 112202263B
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- Prior art keywords
- flange portion
- winding
- outer flange
- stator
- lead
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Classifications
-
- 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
-
- 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
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Insulation, Fastening Of Motor, Generator Windings (AREA)
Abstract
The present invention relates to an electric motor and a compressor. The invention provides a technique capable of simply performing an operation of preventing movement of a 2 nd lead portion of a stator winding connected to a neutral point in a short time. In the present invention, an outer flange part (310) of a 1 st coil bobbin (300) arranged on one side in the axial direction of a stator core (200) has a plurality of 1 st slots (350) and a holding part (380). The 2 nd lead portions (510B-530B) of the 1 st stator winding (510) to the 3 rd stator winding (530) are circumferentially wound inside the outer flange portion (310) in a commonly connected state. At least one of the 1 st lead portions (510A-530A) of the 1 st stator winding (510) to the 3 rd stator winding (530) passes through the inside of the 2 nd lead portions (510B-530B) and the 1 st slot (350), reaches the outside from the inside of the outside flange portion (310), and is connected to the hub member (600) through the holding space (380A) of the holding portion (380).
Description
Technical Field
The present invention relates to an electric motor used in a compressor or the like, and more particularly to a technique for preventing movement of a lead portion of a stator winding.
Background
In a compressor or the like, a concentrated winding motor is used as a drive motor. A concentrated winding motor is disclosed in, for example, japanese patent application laid-open No. 2002-44892 (patent document 1).
The motor disclosed in patent document 1 has a rotor and a stator.
The stator has: a stator core having a plurality of teeth; coil bobbins having an insulating property, disposed on both sides of the stator core in the axial direction; and a stator winding. Preferably, as the bobbin, a resin bobbin formed of a resin having insulating properties is used.
The coil bobbin has: an outer flange portion extending in the circumferential direction and the axial direction; a plurality of inner flange portions arranged radially inward of the outer flange portions and extending in the circumferential direction and the axial direction; and a plurality of main body portions extending in the radial direction and connecting the outer flange portion and the inner flange portion.
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 winding has 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 star connection. For example, the 1 st lead portion of the U-phase to W-phase stator winding is connected to the R-phase to T-phase power supply 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 circumferentially led 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 winding is connected to the wire collecting member after being circumferentially wound inside the outer flange portion of the bobbin. The 1 st lead portion and the 2 nd lead portion are fastened (fixed) to the bobbin by the binding wire in order to prevent movement due to vibration or the like at the time of conveyance.
Prior art literature
Patent literature
Patent document 1: japanese patent laid-open 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 fastening 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 fastening the 1 st lead portion and the 2 nd lead portion to the bobbin by the binding wire is manually performed by an operator. The operation of fastening (fixing) the 1 st lead portion and the 2 nd lead portion to the bobbin using the binding wire is cumbersome and requires time.
The present invention has been made in view of the above, and an object of the present invention is to provide a technique capable of simply performing an operation of preventing movement of a 2 nd lead portion of a stator winding, which is commonly connected to form a neutral point, in a short time.
Solution for solving the problem
The 1 st invention relates to an electric motor. The motor of the invention comprises a stator core, a 1 st coil framework arranged on one axial side of the stator core, a 2 nd coil framework arranged on the other axial side of the stator core, and a stator winding. The 1 st bobbin and the 2 nd bobbin 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 main 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, extends in the circumferential direction and the axial direction, and the main body portion extends in the radial direction to connect the outer flange portion and the plurality of inner flange portions. The outer flange portion, the inner flange portion, and the main body portion form a recess extending in the circumferential direction.
The stator winding has 1 st stator winding to 3 rd stator winding. The 1 st to 3 rd stator windings typically correspond to the U-to W-phase stator windings. The 1 st to 3 rd stator windings have winding portions, 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 teeth of the stator core. The winding start ends of the 1 st to 3 rd stator windings refer to winding start ends of electric wires forming winding portions on the winding start side among winding portions of the 1 st to 3 rd stator windings, and the winding end ends of the 1 st to 3 rd stator windings refer to winding end ends of electric wires forming winding portions on the winding end side among winding portions of the 1 st to 3 rd stator windings. The 1 st lead portion is connected to a hub 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 method. Preferably, the connection portion of the 1 st lead portion and the 2 nd lead portion is covered with an insulating member such as an insulating film.
The outer flange portion of the 1 st bobbin has a plurality of 1 st grooves. 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 circumferentially led inside the outer flange portion in a commonly connected state.
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, which are commonly connected, to the outside from the inner side 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 portion can be prevented by performing only the operation of passing at least one of the 1 st lead portions of the 1 st to 3 rd stator windings through the inside of the 2 nd lead portion and the 1 st slot. That is, the operation of preventing the movement of the 2 nd lead portion can be performed easily in a short time.
In a different mode of the invention of claim 1, at least two of the 1 st lead portions pass through the inner side of the 2 nd lead portion and the 1 st groove to reach the outside from the inner side of the outer flange portion. Here, at least two of the 1 st lead portions pass through the inner side of the 2 nd lead portion at circumferentially separated portions. That is, the circumferentially divided portion of the 2 nd lead portion is held (sandwiched) by the 1 st lead portion and the outer flange portion.
In this embodiment, the movement of the 2 nd lead portion can be reliably prevented.
In a different aspect of the invention according to claim 1, the outer flange portion of the 1 st bobbin includes a holding portion. The holding portion has a wall portion extending in the circumferential direction and the axial direction and forming a holding space open on both sides in the axial direction, on the outer side of 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 which are arranged apart in the circumferential direction. The 1 st side wall portion and the 2 nd side wall portion are provided so as to be continuous with the outer peripheral surface of the outer flange portion, and the 1 st side wall portion and the 2 nd side wall portion extend in the radial direction and the axial direction. The outer wall portion is connected to the portions 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 1 st groove and the inside of the 2 nd lead portion, reaches the outside from the inside of the outside flange portion, and is connected to the hub member through the holding space of the holding portion.
In this aspect, the 2 nd lead portion is more reliably held by the outside flange portion and at least one of the 1 st lead portions.
In a different aspect of the invention of claim 1, the outer wall portion of the holding portion has an opening portion that communicates 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 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 according to claim 1, the 1 st and 2 nd side wall portions of the holding portion have a 1 st and 2 nd locking groove that communicate in the circumferential direction (extend in the circumferential direction) and that are open to the stator core side. The 1 st locking groove of the 1 st side wall part and the 2 nd locking groove of the 2 nd side wall part are formed so that the 1 st lead part can be locked in a state of extending along the circumferential direction.
One of the 1 st lead portions passes through the 1 st groove and reaches the outside from the inside of the outside flange portion, and is connected to the hub member through the 1 st locking groove and the holding space of the holding portion. The other one of the 1 st lead portions passes through the 1 st groove and reaches the outside from the inside of the outside flange portion, and is connected to the hub member through the 2 nd locking groove of the holding portion and the holding space. The 1 st locking groove and the 2 nd locking groove can limit the movement of the 1 st lead part passing through the holding space along the radial direction.
In this embodiment, the 1 st lead portion can be held more reliably.
In a different embodiment of the invention 1, the 1 st lead portion extends from the winding start end of the 1 st stator winding to the 3 rd stator winding, and the 2 nd lead portion extends from the winding end of the 1 st stator winding to the 3 rd stator winding. The holding portion is provided at a position corresponding to one of winding start ends of the 1 st stator winding to the 3 rd stator winding.
And, the 2 nd lead portion is circumferentially led 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 hub member through the inside of the 2 nd lead portion. Further, the 1 st lead portion extending from the remaining two of the winding start ends passes through the inside of the 2 nd lead portion and the 1 st groove, reaches the outside from the inside of the outside flange portion, and is connected to the hub 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 inside of the 2 nd lead portion and the 1 st groove to reach the outside from the inside of the outside flange portion, so that the 2 nd lead portion is sandwiched between the outside 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 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 the standing 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 hub 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, one of the 1 st lead portions of the 1 st stator winding to the 3 rd stator winding is connected to the hub member, and the remaining two are connected to the hub member through the 1 st slot and the holding space, whereby the movement of the 1 st lead portion and the 2 nd lead portion can be prevented by performing this operation. That is, the operation of preventing the movement of the 1 st lead portion and the 2 nd lead portion can be performed easily in a short time.
In a different embodiment of the invention according to claim 1, the 1 st to 3 rd stator windings have transitions between teeth.
The outer flange portion of the 2 nd coil bobbin has: a plurality of 2 nd slots communicating with the inner circumferential surface and the outer circumferential surface and opening on a side opposite to the stator core; and a plurality of protrusions protruding 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 to the stator core. The plurality of projections include projections from group 1 to group 3, and the distance from the projections from group 1 to group 3 along the axial direction from the end surface on the opposite side of the stator core corresponds to the depths of the grooves from group 1 to group 3.
The transition portions of the 1 st to 3 rd stator windings pass through the grooves of the different groups to reach the outside from the inside to the outside of the outside flange portion, and are circumferentially wound around the outer peripheral surface of the outside flange portion while the movement in the axial direction is restricted by the protrusions of the different groups.
In the present embodiment, the transition portions between the teeth of the 1 st stator winding and the 3 rd stator winding can be simply wound in a state of preventing contact.
The 2 nd invention relates to a compressor. In the compressor of the present invention, any of the aforementioned motors is used as the motor for driving the compression mechanism.
The compressor of the present invention has the same effects as the aforementioned motor.
ADVANTAGEOUS EFFECTS OF INVENTION
In the motor according to the invention 1 and the compressor according to the invention 2, the operation of preventing the movement of the 2 nd lead portion of the stator winding, which is commonly connected to form the neutral point, can be performed in a short time.
Drawings
Fig. 1 is a diagram showing a stator constituting an embodiment of a motor according to 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 diagram showing a 1 st coil 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 of fig. 1 viewed 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 according to 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, stator core inner space; 210. a yoke; 220. teeth; 221. a tooth base; 222. tip end portion; 222a, tooth top end face; 240. a stator groove; 240a, slot opening; 290. a positioning concave part; 300. coil former (1 st coil former); 300A, bottom surface; 300B, end face; 300a, coil skeleton inner space; 300b, recesses; 310. an outer flange portion; 310A, an outer peripheral surface; 310B, inner peripheral surface; 320. an inner flange portion; 330. a main body portion; 350. 350a to 350f, grooves (groove 1); 360. 360 a-360 c, a hook portion; 380. a holding section; 380a, a holding space; 380b, 380c, opening portions; 381. a wall member; 381a, side wall portions (1 st side wall portion); 381b, side wall portions (2 nd side wall portion); 381c, an outer wall portion; 382a, locking groove (1 st locking groove); 382b, locking groove (2 nd locking groove); 390. positioning the protruding part; 400. coil former (2 nd coil former); 400A, bottom surface; 400B, end face; 410. an outer flange portion; 420. an inner flange portion; 430. a main body portion; 450. 450A to 450C, grooves (groove 2); 460. 460A-460C, protrusions; 500. a stator winding; 510 to 530, 1 st stator winding to 3 rd stator winding; 510A-530A, 1 st lead portion; 510B-530B, the 2 nd lead portion; 510a to 530a, winding start ends; 510b to 530b, winding end; 510 c-530 c, transition portion; 540. 551-553, insulating members; 541. a joint; 600. and a line concentration component.
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 a direction in which a rotation center line (rotation center line P shown in fig. 2) passing through a rotation center of a rotor is extended in a state where the rotor is rotatably arranged with respect to a stator. The term "circumferential direction" refers to a circumferential direction with the rotation center of the rotor as a center point when viewed from one side in 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 in the axial direction in a state where the rotor is rotatably disposed with respect to the stator. "one side in the circumferential direction" means the arrow X side shown in fig. 1, and "the other side in the circumferential direction" means the arrow Y side shown in fig. 1. Of course, "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 of fig. 1 viewed 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 has a rotor rotatably supported with respect to the stator 100, but is not shown in fig. 1. As the rotor, a rotor having a variety of known 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 face 200A on one side in the axial direction and a stator core end face 200B on the other side in the axial direction.
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 seen 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 222 provided radially inward of the tooth base 221 and extending in the circumferential direction. A stator core inside space 200a into which the rotor is inserted is formed by a radially inner tip end surface 222a of the tip end portion 222.
Stator slots 240 are formed by circumferentially adjacent teeth 220. Further, a groove opening 240a is formed by the tooth tip portions 222 adjacent in the circumferential direction.
Further, positioning recesses 290 capable of being fitted with positioning protrusions 390 are formed in the stator core end faces 200A and 200B, and the positioning protrusions 390 are formed in 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. It is preferable to be 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 main 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 main body 330 form a recess 300b extending in the circumferential direction.
The 1 st bobbin 300 has a bottom surface 300A on a side opposite to the stator core end surface 200A of the stator core 200, and has an end surface 300B on a 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 bobbin 300 is disposed on one side (stator core end surface 200A side) of the stator core 200 in the axial direction, and the outer flange portion 310, the inner flange portion 320, and the main body portion 330 are opposed to the yoke 210, the tooth tip 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 grooves 350, a plurality of hooks 360, and a retaining portion 380.
The groove 350 communicates (extends in the radial direction) with the outer peripheral surface 310A and the inner peripheral surface 310B of the outer flange portion 310, and opens on the side opposite to the bottom surface 300A (the side opposite to the stator core 200).
The hook 360 is formed in a hook shape by a 1 st portion and a 2 nd portion, the 1 st portion being provided so as to be continuous with the outer peripheral surface 310A of the outer flange 310 and extending outward in the circumferential direction and the radial direction, and the 2 nd portion being provided so as to be continuous with a portion of the 1 st portion on the opposite side of the outer peripheral surface 310A and extending toward the bottom surface 300A side in the circumferential direction and the axial direction. When the 2 nd to 2 nd lead portions 510B to 530B 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 can be restrained from moving axially to the opposite side of the bottom surface 300A and radially outward by passing between the outer peripheral surface 310A of the outer flange 310 and the hook 360. In fig. 3, hooks 360a to 360c are formed from one side in the circumferential direction (arrow X side) toward the other side in the circumferential direction (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 381c. The 1 st side wall portion 381a is provided so as to be continuous with the outer peripheral surface 310A, and extends in the radial direction and the axial direction. The 2 nd side wall portion 381b is disposed apart from the 1 st side wall portion 381a in the circumferential direction, and the 2 nd side wall portion 381b is provided so as to be continuous with the outer peripheral surface 310A and extends in the radial direction and the axial direction. In fig. 4, the 1 st side wall 381a is arranged apart from the 2 nd side wall 381b toward one circumferential direction (arrow X side). The outer wall portion 381c is provided to connect portions of the 1 st and 2 nd side wall portions 381a and 381b on the opposite side of 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 opening 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 a 1 st lead portion described later can be held in a state of passing through the holding space 380a in the axial direction.
The outer wall portion 381c has an opening 380b communicating in the axial and radial directions. The opening 380b is formed so that the 1 st lead portion can be inserted into the holding space 380a in a state extending in the axial direction.
The 1 st side wall part 381a has a 1 st locking groove 382a on the bottom surface 300A side, which is obtained by cutting off the bottom surface 300A side and the outer peripheral surface 310A side, and the 2 nd side wall part 381b has a 2 nd locking groove 382b on the bottom surface 300A side, which is obtained by cutting off the bottom surface 300A side and the outer peripheral surface 310A side. The 1 st lead portion, which will be described later, passes through the holding space 380a via the 1 st locking groove 382a or the 2 nd locking groove 382b. The 1 st locking groove 382a and the 2 nd locking groove 382b are formed to be able to lock the 1 st lead portion. The movement of the 1 st lead portion in the radial direction is restricted by the 1 st locking groove 382a or the 2 nd locking groove 382b.
The outer flange 310 has an opening 380c at a position corresponding to the holding space 380a. 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 main body portion 430.
Like 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. In addition, similarly to the 1 st bobbin 300, a positioning protrusion (not shown) is formed on the bottom surface 400A, and the positioning protrusion can be fitted into the positioning recess 290 formed in the stator core end surface 200B.
The 2 nd bobbin 400 is disposed on the other side (stator core end surface 200B side) in the axial direction of the stator core 200 such that the outer flange portion 410, the inner flange portion 420, and the main body portion 430 are opposed to the yoke 210, the tooth tip 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 (extend in the radial direction) with the outer peripheral surface 410A and the inner peripheral surface 410B of the outer flange portion 410, and the end surface 400B side 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 having different depths in the axial direction from the end face 400B.
The plurality of protrusions 460 protrude (project) radially outward from the outer peripheral surface 410A of the outer flange portion 410. The protrusion 460 includes a protrusion 460A of group 1, a protrusion 460B of group 2, and a protrusion 460C of group 3, and the protrusion 460A of group 1, the protrusion 460B of group 2, and the protrusion 460C of group 3 correspond to the depths of the grooves 450A to 450C of groups 1 through 3 in the axial direction from the end surface 400B.
The stator winding 500 is composed of an electric wire wound around the teeth 220 (in detail, the tooth base 221) of the stator core 200.
Specifically, 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, and the electric wire is wound around the teeth 220 of the stator core 200. As the electric wire, a known electric wire can be used. For example, an electric wire composed of a conductor such as copper and an insulating cover layer covering the outer periphery of the conductor can be used.
The winding portion is formed by an 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 has 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 the U-phase stator winding, the V-phase stator winding, and the 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.
In general, the 1 st to 3 rd stator windings are constituted by a plurality of winding portions. For example, by a plurality of winding portions 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. In addition, the 1 st stator winding 510 to the 3 rd stator winding 530 have transition portions 510c to 530c between teeth.
Next, the processing of the 1 st to 1 st lead portions 510A to 530A extending from the winding start ends 510A to 530A and the 2 nd to 2 nd lead portions 510B to 530B extending from the winding end ends 510B to 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 ends 510a to 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 outside flange portion 310. Then, the outer peripheral surface 310A of the outer flange 310 is circumferentially wound around, and is hooked to the hooks 360A, 360b, and 360c. And further from the outside of the outer flange portion 310 to the inside through the groove 350 d.
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 310 is circumferentially wound around and hooked to the hooks 360b and 360c. And further from the outside of the outer flange portion 310 to the inside through the groove 350 d.
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 outside flange portion 310. Then, the outer peripheral surface 310A of the outer flange 310 is circumferentially wound around and hooked to the hook 360c. And further from the outside of the outer flange portion 310 to the inside through the groove 350 d.
The 2 nd and 2 nd lead portions 510B and 520B are bundled by the hook 360B, and the 2 nd to 2 nd lead portions 510B to 530B are bundled by the hook 360c.
Typically, the 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 lead portion 510B to the 2 nd lead portion 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, the 2 nd lead portion 530B passes through the grooves 350c and 350 d), and are bundled by the hooks 360B and 360c. This prevents the 2 nd to 2 nd lead portions 510B to 530B from moving in the rewinding direction.
The portions of the 2 nd to 2 nd lead portions 510B to 530B passing through the groove 350d are commonly connected to form a neutral point. The connection portion (neutral point) is covered with an insulating member 540. As the insulating member 540, for example, a known insulating film wound in a tubular shape and having a joint 541 formed at one end can be used.
The 2 nd to 2 nd lead portions 510B to 530B are circumferentially wound inside (inside the recess 300B) 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).
When an insulating member in which an insulating film is wound in a cylindrical shape is used as the insulating member 540, a crease is formed when the insulating member 540 is wound inside the outer flange portion 310 in the circumferential direction. 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. Accordingly, 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 (see later for details).
The 1 st to 1 st lead portions 510A to 530A of the 1 st to 3 rd stator windings 510 to 530 are covered with the insulating members 551 to 553. As the insulating members 551 to 553, insulating members formed by forming a known resin film into a tubular 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 outer flange portion 310 passes through the groove 350e provided on the circumferential side of the holding portion 380 and reaches the outside from the inside. Then, the hub member 600 is connected to the 1 st locking groove 382a and the holding space 380a of the 1 st side wall portion 381a of the holding portion 380, which are disposed on one circumferential side.
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 disposed parallel (including "substantially parallel") to the axial direction of the opening 380 b. Then, by pulling the 1 st lead portion 510A to the opposite side of the stator core 200, the 1 st lead portion 510A passes through the 1 st locking groove 382a and the holding space 380A. Movement of the 1 st lead portion 510A in the radial direction is restricted by the 1 st locking groove 382 a.
In addition, the 1 st lead portion 530A (insulating member 553) of the 3 rd stator winding 530 is wound in the circumferential direction (in the circumferential direction in fig. 1) so as to pass through the inside of the insulating member 540. Then, the outer flange portion 310 passes through the groove 350f provided on the other side in the circumferential direction than the holding portion 380, and reaches the outside from the inside. Then, the hub member 600 is connected to the holding space 380a through the 2 nd locking groove 382b of the 2 nd side wall portion 381b of the holding portion 380, which is disposed on the other side in the circumferential direction.
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 collecting member 600 after being wound 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, thereby pressing the insulating member 540 in the direction of the outer flange portion 310. Thus, the portion of the insulating member 540 on the circumferential side (arrow X side) of the winding start end 520A (1 st lead portion 520A) is sandwiched between the 1 st lead portion 510A and the outer flange 310.
Further, the 1 st lead portion 530A of the 3 rd stator winding 530 passes through the groove 350f, the 2 nd locking groove 382b, and the holding space 380A, and presses the insulating member 540 in the direction of the outer flange 310. Thus, the portion of the insulating member 540 on the other side (arrow Y side) in the circumferential direction than the winding start end 520A (1 st lead portion 520A) is sandwiched between the 1 st lead portion 530A and the outer flange portion 310.
In addition, since the 1 st lead portion 510A and the 1 st lead portion 530A have rigidity, the hub member 600 connected to the 1 st lead portion 510A and the 1 st lead portion 530A is held in the raised state by the holding portion 380 on the side opposite to the stator core 200. Accordingly, the 1 st lead portion 520A of the 2 nd stator winding 520 is connected to the wire collecting member 600, and thereby the insulating member 540 is pressed in the direction of the outer flange portion 310. Thereby, the portion of the insulating member 540 corresponding to the winding start end 520A (the portion corresponding to the holding portion 380) is sandwiched by the 1 st lead portion 520A and the outer flange portion 310.
Next, the processing of the transition portions 510c to 530c between the teeth of the 1 st stator winding 510 to the 3 rd stator winding 530 will be described with reference to fig. 1.
In the present embodiment, the transition portions 510c to 530c are circumferentially wound around 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 circumferentially wound around the outer peripheral surface 410A of the outer flange portion 410, and then reach the inside from the outside of the outer flange portion 410 through the 2 nd groove 450. At this time, the transition portions 510C to 530C pass through the group of grooves selected from the group 1 of grooves 450A to the group 3 of grooves 450C in such a manner as not to overlap in the axial direction. When the outer peripheral surface 410A of the outer flange 410 is circumferentially wound around the grooves of the same group, the transition portions 510C to 530C are prevented from approaching each other in the axial direction by the projections 460A to 460C of the 1 st group to the 3 rd group.
In the present embodiment, the 2 nd lead portions 510B to 2 nd lead portions 530B of the 1 st stator winding 510 to 3 rd stator winding 530 are wound around the inside of the outer flange 310 in the circumferential direction in a commonly connected state, and by passing both the 1 st lead portions 510A and 530A of the 1 st lead portions 510A to 1 st lead portions 530A through the inside of the 2 nd lead portions 510B to 2 nd lead portions 530B, the movement of the 2 nd lead portions can be prevented by performing this operation.
Fig. 7 shows a 1 st bobbin 300 of a stator according to 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 structure of the holding portion 380 provided in the outer flange portion 310 of the 1 st bobbin 300 is different from that shown in fig. 4. 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, reach the outside from the inside of the outside flange portion 310, and are connected to the hub 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 structure in which the 1 st to 3 rd stator windings 510 to 530 nd lead portions 510B to 530B are held (sandwiched) by the 1 st to 1 st lead portions 510A to 530A and the outer flange portion 310 is used, but the structure in which the 1 st to 1 st lead portions 510A to 530A are held (sandwiched) by at least one of the 1 st to 1 st lead portions and the outer flange portion can be used.
Further, although the structure in which the 1 st lead portions 510A and 530A pass through the inside of the 2 nd lead portions 510B to 510B and the 1 st groove 350 to reach the outside from the inside of the outside flange 310 and pass through the holding space 380A of the holding portion 380 is used, a structure in which at least one of the 1 st lead portions 510A to 530A passes through the inside of the 2 nd lead portions 510B to 510B and the 1 st groove 350 to reach the outside from the inside of the outside flange 310 can be used.
As a technique for winding the 1 st to 1 st lead portions 510A to 530A through the inside of the 2 nd to 2 nd lead portions 510B to 530B, various techniques can be used.
The present invention is not limited to the configuration described in the embodiment, but can be modified, added, and deleted in various ways.
While the motor has been described in the embodiments, the present invention may be configured as a compression mechanism unit and a motor that drives the compression mechanism unit.
The insulating member covering the connection portion of the 2 nd lead portion and the insulating member covering the 1 st lead portion can be omitted.
Although the transition portion is wound on the 2 nd bobbin side, the transition portion may be wound on the 1 st bobbin side.
The method (region and the like) 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 portions 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 (9)
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,
The 1 st coil bobbin and the 2 nd coil bobbin each have an outer flange portion extending in a circumferential direction and an axial direction, a plurality of inner flange portions disposed radially inward of the outer flange portion and extending in the circumferential direction and the axial direction, and a plurality of main body portions extending in the radial direction 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 having 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 a winding start end and a winding end, the 1 st lead portion of the 1 st to 3 rd stator windings being connected to a hub member connectable to a power source, portions of tip sides of the 2 nd lead portions of the 1 st to 3 rd stator windings being commonly connected to form a neutral point,
the electric motor is characterized in that,
the outer flange portion of the 1 st bobbin has a 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 portions of the 1 st stator winding to the 3 rd stator winding on the tip end side of the 2 nd lead portion are wound around the inside of the outer flange portion of the 1 st bobbin in the circumferential direction in a state of being commonly connected and covered with an insulating member,
at least one of the 1 st lead portions of the 1 st to 3 rd stator windings passes through the 1 st slot and the inner side of the insulating member and reaches the outer side from the inner side of the outer flange portion of the 1 st bobbin.
2. The motor of claim 1, wherein the motor is configured to control the motor to drive the motor,
at least two of the 1 st lead portions pass through the inside of the insulating member and the 1 st slot to reach the outside from the inside of the outside flange portion of the 1 st bobbin,
the at least two of the 1 st lead portions pass through a circumferentially divided portion inside the insulating member.
3. The motor of claim 1, wherein the motor is configured to control the motor to drive the motor,
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 open on both sides in the axial direction on the outer side of the outer peripheral surface of the outer flange portion,
The wall part comprises a 1 st side wall part, a 2 nd side wall part and an outer wall part,
the 1 st side wall portion is provided in continuous relation with the outer peripheral surface of the outer flange portion, the 1 st side wall portion extends in the radial direction and the axial direction,
the 2 nd side wall portion is disposed apart from the 1 st side wall portion in the circumferential direction, is provided so as to be continuous with the outer peripheral surface of the outer flange portion, extends in the radial direction and the 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 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 portions passes through the inside of the insulating member and the 1 st slot to reach the outside from the inside of the outside flange portion of the 1 st bobbin, and is connected to the hub member through a holding space of the holding portion.
4. An electric motor according to claim 2, wherein,
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 open on both sides in the axial direction on the outer side of the outer peripheral surface of the outer flange portion,
The wall part comprises a 1 st side wall part, a 2 nd side wall part and an outer wall part,
the 1 st side wall portion is provided in continuous relation with the outer peripheral surface of the outer flange portion, the 1 st side wall portion extends in the radial direction and the axial direction,
the 2 nd side wall portion is disposed apart from the 1 st side wall portion in the circumferential direction, is provided so as to be continuous with the outer peripheral surface of the outer flange portion, extends in the radial direction and the 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 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 two of the 1 st lead portions pass through the inside of the insulating member and the 1 st slot to reach the outside from the inside of the outside flange portion of the 1 st bobbin, and are connected to the hub member through the holding space of the holding portion.
5. An electric motor according to claim 3 or 4, characterized in that,
the outer wall portion has an opening portion communicating in the axial direction and the radial direction.
6. An electric motor according to claim 3 or 4, characterized in that,
the 1 st side wall part is provided with a 1 st locking groove which is communicated in the circumferential direction and is open near the side of the stator core,
The 2 nd side wall portion has a 2 nd locking groove which communicates in the circumferential direction and is open 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 to reach an outside from an inside of the outer flange portion of the 1 st bobbin, and is connected to the hub 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, reaches from the inside of the outer flange portion of the 1 st bobbin to the outside, and is connected to the hub member through the 2 nd locking groove of the holding portion and the holding space.
7. The motor of claim 6, wherein the motor is configured to control the motor to drive the motor,
the 1 st lead portion extends from the winding start end of the 1 st stator winding to the 3 rd stator winding, the 2 nd lead portion extends from the winding end of the 1 st stator winding to the 3 rd stator winding,
the holding portion is provided at a portion corresponding to one of the winding start ends of the 1 st stator winding to the 3 rd stator winding,
the insulating member is circumferentially wound through a portion corresponding to the one of the winding start ends,
The 1 st lead portion extending from the one of the winding start ends is directly connected to the wire collecting member through the inside of the insulating member,
the 1 st lead portion extending from the remaining two of the winding start ends passes through the inside of the insulating member and the 1 st slot to reach the outside from the inside of the outside flange portion of the 1 st bobbin, and is connected to the hub member through the holding space of the holding portion.
8. The motor according to any one of claims 1 to 4, wherein,
the 1 st stator winding to the 3 rd stator winding have transition portions between teeth,
the outer flange portion of the 2 nd bobbin has: a plurality of 2 nd slots communicating with the inner circumferential surface and the outer circumferential surface and opening on a side opposite to the stator core; and a plurality of protrusions protruding 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 face on the opposite side of the stator core,
the plurality of projections includes a 1 st to 3 rd group of projections, a distance from an end surface of the 1 st to 3 rd group of projections on a side opposite to the stator core in an axial direction corresponds to a depth of the 1 st to 3 rd group of grooves,
The transition portions of the 1 st to 3 rd stator windings pass through the 1 st to 3 rd groups of slots without overlapping in the axial direction, reach from the inside to the outside of the outer flange portion of the 2 nd bobbin, reach from the outside to the inside, and are circumferentially wound around the outer peripheral surface of the outer flange portion of the 2 nd bobbin in a state separated by the 1 st to 3 rd groups of protrusions.
9. A compressor has a compression mechanism part and a motor for driving the compression mechanism part,
the compressor is characterized in that,
as the motor, the motor according to any one of claims 1 to 6 is used.
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 CN112202263A (en) | 2021-01-08 |
| CN112202263B true CN112202263B (en) | 2023-07-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010119576.5A Active CN112202263B (en) | 2019-07-08 | 2020-02-26 | Motor and compressor |
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| Country | Link |
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| JP (1) | JP7075376B2 (en) |
| CN (1) | CN112202263B (en) |
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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 |
| 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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| 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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Also Published As
| Publication number | Publication date |
|---|---|
| CN112202263A (en) | 2021-01-08 |
| JP7075376B2 (en) | 2022-05-25 |
| JP2021013272A (en) | 2021-02-04 |
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