CN107104531B - Stator insulation framework, stator assembly and motor - Google Patents
Stator insulation framework, stator assembly and motor Download PDFInfo
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- CN107104531B CN107104531B CN201710442440.6A CN201710442440A CN107104531B CN 107104531 B CN107104531 B CN 107104531B CN 201710442440 A CN201710442440 A CN 201710442440A CN 107104531 B CN107104531 B CN 107104531B
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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
- H02K3/52—Fastening salient pole windings or connections thereto
- H02K3/521—Fastening salient pole windings or connections thereto applicable to stators only
- H02K3/522—Fastening salient pole windings or connections thereto applicable to stators only for generally annular cores with salient poles
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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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- 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
Abstract
The invention relates to a stator insulation framework, a stator assembly and a motor, and mainly aims to solve the technical problem that an existing winding coil is easy to cross and loose in the process of winding on the stator insulation framework. The technical scheme mainly adopted is as follows: the stator insulation framework comprises an inner protection tooth and a winding part, wherein one side of the inner protection tooth is provided with slot insulation paper fixing blocks distributed on two opposite sides of the winding support part; in the radial outward direction, the winding support part is not lower than the first cambered surface, and the insulating paper fixing blocks of each groove do not protrude out of the first cambered surface; the first cambered surface is a surface with an axis coincident with the axis of the stator insulation framework and an overlapping area with the outer surface of each slot insulation paper fixing block. According to the technical scheme, the height and the outline of the inner protecting teeth are optimized, and the axial reciprocating stroke of the winding action is more consistent with the actual radial arrangement stroke of the coils; the radial structure of the inner protecting teeth is optimized, and the risk of the inner protecting teeth exceeding the inner holes of the stator insulating framework is reduced.
Description
Technical Field
The invention relates to the technical field of motors, in particular to a stator insulation framework, a stator assembly and a motor.
Background
At present, winding quality anomalies such as loose winding, crossed winding, winding slot insulating paper and the like of a stator winding often occur in the production process of the variable frequency concentrated winding motor, and the problems such as loose winding, crossed winding, winding slot insulating paper and the like of the winding coil are reduced but still occur at intervals through continuously optimizing a winding program of a winding machine.
As shown in fig. 1 and fig. 2, the inner protecting teeth 1 of the existing stator insulation framework are the same as the outer wall 2 of the framework in height, the axial reciprocating motion stroke Hn of the winding is far greater than the axial arrangement stroke Hc of the winding, and the swing amplitude of the coil is amplified in the falling process, so that poor winding quality is caused.
Fig. 3 is a detailed structural schematic diagram of the stator insulation skeleton. As shown in fig. 3, one side of the inner guard tooth 1 has a winding support 11 and a slot insulating paper fixing block 12. The slot insulating paper fixing blocks 12 protrude from the supporting surface of the winding supporting part 11, and as the tangential swing angle of the winding action is fixed, the radial reciprocating action stroke cannot reach the inner side of the first cambered surface 120 enveloping the outer surface of each slot insulating paper fixing block 12, namely the part shown by the shading in fig. 3, the part can only retain the winding through the adjacent position, the coil is extruded to fill and arrange, the radial reciprocating action in the process is stopped, the state of the winding coil is unstable, and the winding is extremely easy to cross and loose so as to wrap the adjacent slot insulating paper.
Disclosure of Invention
In view of the above, the invention provides a stator insulation framework, a stator assembly and a motor, and mainly aims to solve the technical problems that the existing winding coil is easy to cross and loose in the process of winding on the stator insulation framework.
In order to achieve the above purpose, the present invention mainly provides the following technical solutions:
in one aspect, an embodiment of the present invention provides a stator insulation skeleton, including an inner protecting tooth and a winding part, wherein one side of the inner protecting tooth is provided with a winding supporting part and slot insulation paper fixing blocks distributed on two opposite sides of the winding supporting part;
in the radial outward direction of the stator insulation framework, the winding support part is not lower than a first cambered surface, and each slot insulation paper fixing block is not protruded out of the first cambered surface;
the first cambered surface is a surface with an axis coincident with the axis of the stator insulation framework and a coincident area with the outer surface of each slot insulation paper fixing block.
The aim and the technical problems of the invention can be further realized by adopting the following technical measures.
In the foregoing stator insulating frame, optionally, in an axial direction of the stator insulating frame, there is only one intersection point between a projection profile of the first cambered surface and a projection profile of an outer surface of each slot insulating paper fixing block.
In the foregoing stator insulating frame, optionally, the winding support portion does not protrude from the first cambered surface in a direction radially outward of the stator insulating frame, and has a first region overlapping with the first cambered surface;
wherein the first area is an arc surface extending along the circumferential direction of the stator insulation framework; or, the first region is a straight line extending along the axial direction of the stator insulation framework.
In the foregoing stator insulation skeleton, optionally, the slot insulating paper fixing block includes a first slot insulating paper fixing block located at a first side of the winding support portion, and a second slot insulating paper fixing block located at a second side of the winding support portion, the first side being opposite to the second side;
wherein a first gap is provided between the first side of the winding support part and the first slot insulating paper fixing block; and/or a second gap is formed between the second side of the winding support part and the second slot insulating paper fixing block.
In the foregoing stator insulating frame, optionally, when a first gap is provided between the first side of the winding support part and the first slot insulating paper fixing block and a second gap is provided between the second side of the winding support part and the second slot insulating paper fixing block,
the projection contour of the winding support part along the axial direction of the stator insulation framework does not protrude the projection contour of the winding part along the axial direction.
In the foregoing stator insulation skeleton, optionally, the slot insulating paper fixing block includes a first slot insulating paper fixing block located at a first side of the winding support portion, and a second slot insulating paper fixing block located at a second side of the winding support portion, the first side being opposite to the second side;
wherein a first side of the winding support extends to the first slot insulating paper fixing block and a second side of the winding support extends to the second slot insulating paper fixing block.
In the foregoing stator insulating frame, optionally, the first side of the winding support portion has an external shape that is adapted to the first slot insulating paper fixing block; and/or the second side of the winding support part has an external shape adapted to the second slot insulating paper fixing block.
In the foregoing stator insulating frame, optionally, in an axial direction along the stator insulating frame, a height of the inner guard teeth and the winding support portion protruding from the winding portion is smaller than a height of the outer wall of the stator insulating frame protruding from the winding portion.
In the foregoing stator insulating skeleton, optionally, the first cambered surface and the first plane have a first intersecting line; the stator insulation framework further comprises a stator slot, the first plane is parallel to a second plane which passes through the central line of the stator insulation framework and bisects the width of the notch, and the distance between the first plane and the second plane is half of the width of the notch;
a third plane forming part of the slot wall of the stator slot is arranged on one side of the winding part, which is close to the first intersecting line, and the distance between the first intersecting line and the third plane is h;
wherein, in along the axial direction of stator insulation skeleton, interior tooth protect with the winding supporting part both bulge the height of wire winding portion is equal, and all is greater than or equal to h.
In another aspect, embodiments of the present invention also provide a stator assembly including any one of the stator insulating bobbins described above.
In another aspect, an embodiment of the present invention further provides an electric machine, including any one of the stator insulating bobbins described above.
By means of the technical scheme, the stator insulation framework, the stator assembly and the motor have the following beneficial effects:
in the technical scheme provided by the invention, because the winding support part is not lower than the first cambered surface in the radial outward direction of the stator insulating framework, the interference of the slot insulating paper fixing block on radial winding is avoided, the radial reciprocating motion of the winding machine can reach the winding support part of the inner protecting teeth, the radial reciprocating motion of the winding machine is consistent with the actual radial arrangement stroke of the winding, and the problems of coil crossing, loosening, coil wrapping slot insulating paper and the like caused by the fact that the radial reciprocating motion stroke of the winding and the radial arrangement stroke of the winding are not consistent are further solved.
The foregoing description is only an overview of the present invention, and is intended to provide a better understanding of the present invention, as it is embodied in the following description, with reference to the preferred embodiments of the present invention and the accompanying drawings.
Drawings
FIG. 1 is a top view of a prior art stator insulation backbone;
FIG. 2 is a partial detailed structural cross-sectional view of a prior art stator insulation framework;
FIG. 3 is a schematic view of a part of a detail structure of a stator insulation framework in the prior art;
FIG. 4 is a top view of a stator insulating framework according to an embodiment of the present invention;
FIG. 5 is a schematic view of a part of the detail structure of the stator insulation framework in FIG. 4;
FIG. 6 is a top view of another stator insulation framework provided in accordance with an embodiment of the present invention;
FIG. 7 is a schematic view of a part of the detail structure of the stator insulation framework in FIG. 6;
FIG. 8 is a schematic view showing a part of a detail structure of another stator insulation framework according to an embodiment of the present invention;
FIG. 9 is a partial detailed structural cross-sectional view of a stator insulation framework provided in accordance with an embodiment of the present invention;
FIG. 10 is a side view of a stator assembly provided in accordance with an embodiment of the present invention;
fig. 11 is a top view of a stator assembly according to an embodiment of the present invention.
Reference numerals: 1. inner protecting teeth; 11. a winding support; 12. a slot insulating paper fixing block; 13. a first plane; 120. a first cambered surface; 121. a first slot insulating paper fixing block; 122. a second slot insulating paper fixing block; 1211. a first gap; 1221. a second gap; 2. an outer wall of the stator insulation framework; 200. a stator assembly; 3. a winding part; 31. a third plane; 4. stator slot.
Detailed Description
In order to further describe the technical means and effects adopted for achieving the preset aim of the invention, the following detailed description refers to the specific implementation, structure, characteristics and effects according to the application of the invention with reference to the accompanying drawings and preferred embodiments. In the following description, different "an embodiment" or "an embodiment" do not necessarily refer to the same embodiment. Furthermore, the particular features, structures, or characteristics of one or more embodiments may be combined in any suitable manner.
As shown in fig. 4 to 8, a stator insulation frame 100 according to an embodiment of the present invention includes inner teeth 1 and a winding part 3. The inner teeth 1 and the winding parts 3 are equal in number and correspond to each other one by one. One end of the winding part 3 is connected to the inner guard tooth 1, and the other end is connected to the outer wall 2 of the stator insulation frame 100. The number of the inner teeth 1 is at least two. One side of each inner guard tooth 1 has a winding support 11 and at least two slot insulating paper fixing blocks 12, and the slot insulating paper fixing blocks 12 are distributed on opposite sides of the winding support 11. Wherein, in the radial outward direction of the stator insulation skeleton 100, the winding support 11 is not lower than the first cambered surface 120, and each slot insulation paper fixing block 12 does not protrude from the first cambered surface 120. The first cambered surface 120 is a surface with an axis coincident with the axis of the stator insulation framework and a coincident region with the outer surface of each slot insulation paper fixing block 12. The "overlapping region" herein may refer to a point of overlap, a line of overlap, a plane of overlap, or the like.
The above-mentioned "not lower" means that the winding support 11 may protrude from the first cambered surface 120 in the radially outward direction of the stator insulation frame 100 or be flush with the first cambered surface 120.
Further, in the axial direction of the stator insulation frame 100, there is only one intersection point of the projected contour of the first cambered surface 120 with the projected contour of the outer surface of each slot insulation paper fixing block 12. Preferably: the first cambered surface 120 described above may be a surface tangential to the outer surface of each slot insulating paper fixing block 12. In a specific application example, as shown in fig. 4 and 6, the first cambered surface 120 may be a cylindrical surface.
In the above-provided technical solution, because the winding support portion 11 is not lower than the first cambered surface 120 in the radial outward direction along the stator insulation framework 100, interference of the slot insulation paper fixing block 12 to radial winding is avoided, and the radial winding reciprocating motion of the winding machine can reach the winding support portion 11 of the inner guard tooth 1, so that the radial winding reciprocating motion of the winding machine is consistent with the actual radial winding arrangement motion of the winding, and further the problems of coil crossing, loosening, coil wrapping slot insulation paper and the like caused by the fact that the radial winding reciprocating motion and the radial winding arrangement motion are not consistent are solved.
Further, the winding support 11 does not protrude from the first cambered surface 120 in the radially outward direction of the stator insulation frame 100, and has a first region overlapping with the first cambered surface 120. The first region may be an arc surface extending in the circumferential direction of the stator insulation frame 100 (as shown in fig. 5 and 8), or a straight line extending in the axial direction of the stator insulation frame 100 (as shown in fig. 7).
In the above example, as shown in fig. 5 and 8, when the first region is an arc surface, the arc surface is a part of the cylindrical surface in the circumferential direction, and the surface area thereof is relatively large, so that the contact area with the winding is also relatively large, and the supporting effect on the winding is relatively good.
In the above example, when the first region is straight, the surface area is relatively small, so that the volume is small, and thus the consumed material is small, and the cost is low, as shown in fig. 7.
Further, as shown in fig. 5 and 7, the aforementioned at least two slot insulating paper fixing blocks 12 located on the same inner guard tooth 1 include a first slot insulating paper fixing block 121 located on a first side of the winding support 11, and a second slot insulating paper fixing block 122 located on a second side of the winding support 11. The first side is opposite the second side. Wherein a first gap 1211 is provided between the first side of the winding support 11 and the first slot insulating paper fixing block 121; and/or a second gap 1221 is provided between the second side of the winding support 11 and the second slot insulating paper fixing block 122. In this example, by providing the first gap 1211 and the second gap 1221, the material of the winding support 11 can be saved, and the cost can be saved.
Preferably, the aforementioned first gap 1211 and second gap 1221 exist, and the winding support 11 at this time is like a convex hull provided on the inner guard tooth 1, so that cost saving can be maximized.
Further, when the first gap 1211 and the second gap 1221 exist, the projection profile of the winding support portion 11 along the axial direction of the stator insulation frame 100 does not protrude the projection profile of the winding portion 3 along the axial direction of the stator insulation frame 100, so that the winding support portion 11 can perform an effect of strongly supporting the winding on the winding portion 3.
Of course, in an alternative example, as shown in fig. 8, the aforementioned first gap 1211 and second gap 1221 may both be absent, with the first side of the winding support 11 extending to the first slot insulating paper fixing block 121. The second side of the winding support 11 extends to the second slot insulating paper fixing block 122. In this example, since both sides of the winding supporting part 11 extend to the first slot insulating paper fixing block 121 and the second slot insulating paper fixing block 122, respectively, the supporting area of the winding supporting part 11 to the winding is relatively large, and thus the supporting effect to the winding is relatively good.
The first side of the winding support 11 may have an external shape adapted to the first slot insulating paper fixing block 121, so that the strength of the stator insulating frame 100 of the present invention may be enhanced, and on the other hand, the beauty may be enhanced.
The second side of the winding support 11 may have an external shape adapted to the second slot insulating paper fixing block 122, so that the strength of the stator insulating frame 100 of the present invention may be enhanced, and on the other hand, the beauty may be enhanced.
Further, as shown in fig. 9, in the axial direction of the stator insulation frame 100, the height of the protruding winding portion 3 of both the inner guard tooth 1 and the winding support portion 11 is smaller than the height H1 of the protruding winding portion 3 of the outer wall 2 of the stator insulation frame 100. The height of the coil is reduced in the axial direction in the winding process, so that the problems of coil crossing, loosening, coil wrapping slot insulating paper and the like caused by large coil falling height in the winding process are solved; on the other hand, the inner guard teeth 1 are radially displaced toward the inner bore of the stator insulation frame 100 under the winding tension load. This physical process reduces to deflection of the cantilever Liang Shouzai with the maximum deflection at the cantilever tip. I.e. the radially displaced maximum position of the inner guard tooth 1 is at its tip. Due to the reduction of the height, on the premise of unchanged winding scheme and tension force, according to the deflection characteristic of the cantilever Liang Shouzai, the maximum displacement of the inner protecting teeth 1 of the insulating framework towards the inner hole of the stator insulating framework 100 is reduced, namely the radial safety distance of the inner protecting teeth 1 is increased, and the problem that the inner protecting teeth 1 exceed the inner hole of the stator insulating framework 100 is solved.
As shown in fig. 4 to 8, the stator insulation frame 100 of the present invention includes a stator slot 4, and the stator slot 4 has a notch 41. The first curved surface 120 and the first plane 13 have a first intersecting line therebetween. The first plane 13 is parallel to the second plane. The second plane bisects the slot width and passes through the centerline of the stator insulating skeleton 100. The "pass" herein designates that the center line of the sub-insulation skeleton 100 is located on the second plane. The distance between the first plane 13 and the second plane is half the width of the slot 41.
The winding part 3 has a third plane 31 on a side close to the first intersecting line, which constitutes a part of the slot wall of the stator slot 4, and a distance h between the first intersecting line and the third plane 31. Wherein, in the axial direction along the stator insulation skeleton 100, the heights of the protruding winding portions 3 of both the inner guard teeth 1 and the winding support portions 11 are equal and both greater than or equal to h. As shown in fig. 9, the height of the protruding winding portion 3 of both the inner guard tooth 1 and the winding support portion 11 is H2, and H2 is greater than or equal to H and less than H1. Preferably, the height H2 of both the inner guard tooth 1 and the winding support 11 protruding from the winding portion 3 is equal to H. In this example, H is the limit height of the windings arranged on the winding portion 3, and by lowering the heights H2 to H of both the inner shield teeth 1 and the winding support portion 11, the height of the coil falling down in the axial direction during winding can be reduced to the maximum, so that the problems of the coil crossing, loosening, the coil wrapping slot insulating paper, and the like due to the large coil falling-down height during winding can be further improved.
As shown in fig. 10 and 11, an embodiment of the present invention further provides a stator assembly 200 including the stator insulation frame 100 of any of the above embodiments. The stator assembly 200 provided by the invention can solve the problems of coil crossing, loosening, coil wrapping slot insulating paper and the like caused by the fact that the radial reciprocating motion stroke of the winding is not matched with the radial arrangement stroke of the winding due to the arrangement of the stator insulating framework 100.
Embodiments of the present invention also provide an electric machine comprising the stator insulation skeleton 100 of any of the embodiments described above. The motor provided by the invention can solve the problems of coil crossing, loosening, coil wrapping slot insulating paper and the like caused by the fact that the radial reciprocating motion stroke of the winding is not matched with the radial arrangement stroke of the winding due to the arrangement of the stator insulating framework 100.
The working principle and preferred embodiments of the present invention are described below.
The technical scheme provided by the above solves the following technical problems: (1) the technical problem of non-anastomosis of axial reciprocating stroke; (2) the technical problem of non-anastomosis of radial reciprocating strokes; (3) The technical problem of the inner protecting teeth 1 exceeding the inner hole of the stator insulation framework 100.
1. Improvement of axial reciprocation misalignment:
as shown in fig. 5, 7 and 8, a first intersecting line is formed between the first cambered surface 120 and the first plane 13, wherein the first plane 13 is a theoretical limit of tangential arrangement of coils, and a third plane 31 of a part of the slot wall forming the stator slot 4 is formed on one side of the winding part 3 close to the first intersecting line. The distance between the first intersecting line and the third plane 31 is h, which is the limit height of the windings arranged on the stator insulation frame 100. The axial height of the corresponding part of the inner protecting tooth 1 in the current scheme is far higher than the value, so that the axial reciprocating stroke Hn of the winding is larger than the axial arrangement stroke Hc of the winding (shown in figure 2), the height of the winding coil is reduced to Hc from Hn in the winding process, the fall is large, the swing amplitude of the coil is amplified in the high-speed winding process, the arrangement state of the coil is unstable, and the problems of intersection, loosening, insulating paper of a coil wrapping groove and the like are easily caused.
As shown in fig. 9, H2 is equal to H, so that hn=hc, that is, the axial reciprocating motion stroke of the winding is matched with the axial arrangement stroke of the winding, the falling height of the coil in the winding process is reduced, and the problems of coil crossing, loosening, coil wrapping slot insulating paper and the like caused by large falling height of the coil in the winding process are further improved.
2. Improvement of radial reciprocation mismatch:
as shown in fig. 3, in the current scheme, the first cambered surface 120 is not coincident with the supporting surface of the winding supporting part 11, the radial reciprocating travel of the winding of the shadow part cannot reach, and the wire arrangement of the shadow part is realized by in-situ retention of the winding extrusion coil, that is, the radial reciprocating travel is not coincident with the actual radial arrangement travel of the winding. The in-situ retention winding action of the non-coincident part of the travel makes the state of the winding coil near the position extremely unstable, the coil is easy to cross and loosen, and the loose coil is further easy to wrap adjacent slot insulating paper.
In the first embodiment, as shown in fig. 5, the first cambered surface 120 is overlapped with the supporting surface of the winding supporting portion 11, or is within the supporting surface of the winding supporting portion 11 (i.e. the supporting surface of the winding supporting portion 11 is integrally glued to overlap with the first cambered surface 120 or protrudes out of the first cambered surface 120), at this time, interference of the slot insulation paper fixing block 12 is avoided, radial reciprocation of the winding can reach the supporting surface of the winding supporting portion 11, the radial reciprocation is overlapped with the actual radial arrangement of the winding, and the problems of coil crossing, loosening, winding wrapping slot insulation paper and the like caused by the fact that the radial reciprocation of the winding is not overlapped with the radial arrangement of the winding are solved.
In the second embodiment, as shown in fig. 7, a portion of the supporting surface of the winding supporting portion 11 is glued to form a protrusion, so that the first cambered surface 120 is overlapped or included, and thus the radial reciprocating motion stroke of the winding is overlapped with the radial arrangement stroke of the winding, and the winding quality is improved.
In the third embodiment, as shown in fig. 8, glue is applied to the supporting surface of the winding supporting portion 11 to overlap with or include the first cambered surface 120, and meanwhile, two sides of the glue extend to the slot insulating paper fixing block 12, so that the radial reciprocating motion stroke of the winding overlaps with the radial arrangement stroke of the winding, and the winding quality is improved.
3. Improvement of inner holes of the inner stator insulation framework 100 of the inner protecting teeth 1.
The inner guard teeth 1 are radially displaced towards the inner bore of the stator insulation frame 100 under the winding tension load. This physical process reduces to deflection of the cantilever Liang Shouzai with the maximum deflection at the cantilever tip. I.e. the radially displaced maximum position of the inner guard tooth 1 is at its tip.
According to the invention, the axial height of the inner guard teeth 1 of the stator insulation framework 100 is reduced, and on the premise of unchanged winding scheme and tension force, the maximum displacement of the inner guard teeth 1 towards the inner hole of the stator insulation framework 100 is reduced according to the deflection characteristic of the cantilever Liang Shouzai, namely the radial safety distance of the inner guard teeth 1 is increased, so that the problem that the inner guard teeth 1 exceed the inner hole of the stator insulation framework 100 is solved.
According to the above embodiments, the stator insulation frame 100, the stator assembly and the motor of the present invention have at least the following advantages:
1. the stator insulation framework 100 optimizes the height and the outline of the inner protecting teeth 1 according to the actual shape of the coil, the axial reciprocating stroke of the winding action is more consistent with the actual radial arrangement stroke of the coil, the winding action is smoother, and the winding arrangement effect is improved;
2. the stator insulation framework 100 optimizes the radial structure of the inner protecting teeth 1, eliminates dead angles which cannot be reached by the winding stroke, ensures that the radial stroke of the winding action is consistent with the actual arrangement stroke of the winding, eliminates in-situ retention winding action, and fundamentally eliminates the main reasons of the problems of coil scattering, loosening and winding grooves;
3. the axial height of the inner protecting teeth 1 of the stator insulating framework 100 is reduced, and under the condition that the winding scheme and the tension force are the same, the maximum displacement of the radial deformation of the inner protecting teeth 1 can be effectively reduced, and the risk that the inner protecting teeth 1 exceed the inner hole of the stator insulating framework 100 is reduced.
What needs to be explained here is: under the condition of no conflict, the technical features related to the examples can be combined with each other according to actual situations by a person skilled in the art so as to achieve corresponding technical effects, and specific details of the combination situations are not described in detail herein.
The above description is only of the preferred embodiments of the present invention, and is not intended to limit the present invention in any way, but any simple modification, equivalent variation and modification made to the above embodiments according to the technical substance of the present invention still fall within the scope of the technical solution of the present invention.
Claims (11)
1. The stator insulation framework comprises an inner protection tooth (1) and a winding part (3), wherein one side of the inner protection tooth (1) is provided with a winding supporting part (11) and slot insulation paper fixing blocks (12) distributed on two opposite sides of the winding supporting part (11); it is characterized in that the method comprises the steps of,
in the radial outward direction of the stator insulation framework, the winding support part (11) is not lower than a first cambered surface (120), and each slot insulation paper fixing block (12) does not protrude out of the first cambered surface (120);
the first cambered surface (120) is a surface with an axis coincident with the axis of the stator insulation framework and an overlapping area with the outer surface of each slot insulation paper fixing block (12).
2. The stator insulation frame of claim 1, wherein,
in the axial direction of the stator insulation framework, the projection profile of the first cambered surface (120) and the projection profile of the outer surface of each slot insulation paper fixing block (12) have only one intersection point.
3. The stator insulation frame according to claim 1 or 2, wherein,
the winding support (11) does not protrude from the first cambered surface (120) in a direction radially outward of the stator insulating frame, and has a first region overlapping with the first cambered surface (120);
wherein the first area is an arc surface extending along the circumferential direction of the stator insulation framework; or, the first region is a straight line extending along the axial direction of the stator insulation framework.
4. The stator insulation frame according to claim 1 or 2, wherein,
the slot insulating paper fixing block (12) comprises a first slot insulating paper fixing block (121) positioned at a first side of the winding support part (11) and a second slot insulating paper fixing block (122) positioned at a second side of the winding support part (11), wherein the first side is opposite to the second side;
wherein a first gap (1211) is provided between a first side of the winding support part (11) and the first slot insulating paper fixing block (121); and/or a second gap (1221) is provided between the second side of the winding support part (11) and the second slot insulating paper fixing block (122).
5. The stator insulation frame of claim 4, wherein,
when a first gap (1211) is provided between a first side of the winding support part (11) and the first slot insulating paper fixing block (121), and a second gap (1221) is provided between a second side of the winding support part (11) and the second slot insulating paper fixing block (122),
the projection contour of the winding support part (11) along the axial direction of the stator insulation framework does not protrude the projection contour of the winding part (3) along the axial direction.
6. The stator insulation frame of claim 1, 2 or 5,
the slot insulating paper fixing block (12) comprises a first slot insulating paper fixing block (121) positioned at a first side of the winding support part (11) and a second slot insulating paper fixing block (122) positioned at a second side of the winding support part (11), wherein the first side is opposite to the second side;
wherein a first side of the winding support part (11) extends to the first slot insulating paper fixing block (121), and a second side of the winding support part (11) extends to the second slot insulating paper fixing block (122).
7. The stator insulation frame of claim 6, wherein,
the first side of the winding support part (11) is provided with an outline shape which is matched with the first slot insulating paper fixing block (121); and/or the second side of the winding support part (11) has an external shape adapted to the second slot insulating paper fixing block (122).
8. The stator insulation frame of claim 1, 2, 5 or 7,
in the axial direction along the stator insulation skeleton, the height of the inner protecting teeth (1) and the winding support parts (11) protruding out of the winding parts (3) is smaller than the height H1 of the outer walls (2) of the stator insulation skeleton protruding out of the winding parts (3).
9. The stator insulation frame of claim 8, wherein,
the first cambered surface (120) and the first plane (13) are provided with a first intersecting line;
the stator insulation framework further comprises a stator slot (4), the first plane (13) is parallel to a second plane which passes through the central line of the stator insulation framework and bisects the width of the slot, and the distance between the first plane (13) and the second plane is half of the width of the slot;
a third plane (31) of a part of the slot wall forming the stator slot (4) is arranged on one side of the winding part (3) close to the first intersecting line, and the distance between the first intersecting line and the third plane (31) is h;
wherein, in the axial direction along the stator insulation skeleton, the height of the inner protecting teeth (1) and the winding support part (11) protruding out of the winding part (3) are equal and are both greater than or equal to h.
10. A stator assembly comprising the stator insulation armature of any one of claims 1 to 9.
11. An electric machine comprising the stator insulation skeleton of any one of claims 1 to 9.
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| CN108964320B (en) * | 2018-06-15 | 2020-04-14 | 无锡小天鹅电器有限公司 | Washing machine, motor for washing machine and stator assembly of motor |
| CN109245373B (en) * | 2018-10-17 | 2024-02-06 | 浙江迪贝电气股份有限公司 | Direct winding type motor stator is with guiding socket joint fixed knot of interphase insulation paper constructs |
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| CN107104531A (en) | 2017-08-29 |
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