CN217882988U - Stator core, motor and electric appliance - Google Patents

Abstract

The utility model provides a stator core, motor and electrical apparatus. The stator core comprises a yoke iron core and a tooth iron core, the tooth iron core comprises a first punching sheet assembly and a second punching sheet assembly, a wire slot of the first punching sheet assembly is a closed first wire slot, and a wire slot of the second punching sheet assembly is a second wire slot with an opening. The first punching sheet assembly and the second punching sheet assembly are arranged along the axial direction. When stator core accomplished the wire winding, because the second is towards the piece subassembly and is had the second wire casing to the second wire casing has the opening, so need not to punch the opening of first wire casing and second wire casing again after the wire winding is accomplished, and then need not punch the opening again after the wire winding is accomplished, avoid entering into first wire casing and second wire casing because of punching the opening and produce iron fillings, reduce the impaired probability of winding in first wire casing and the second wire casing.

Description

Stator core, motor and electric appliance

Technical Field

The utility model relates to the technical field of electric motor, particularly, relate to a stator core, motor and electrical apparatus.

Background

At present, in the related art, after the stator core is wound, notches need to be cut at positions corresponding to the stator slots on the inner side of the stator core. However, during the process of cutting the slot opening, metal sheets with small particles are generated, and the metal sheets enter the stator slot to damage the electromagnetic coil, so that the stability of the motor in the operation process is reduced.

SUMMERY OF THE UTILITY MODEL

The present invention aims at least solving one of the technical problems existing in the prior art or the related art.

To this end, a first aspect of the present invention provides a stator core.

A second aspect of the present invention provides an electric machine.

A third aspect of the present invention provides an electrical appliance.

In view of this, the utility model provides a stator core, including yoke portion iron core and tooth portion iron core, tooth portion iron core includes first towards piece subassembly and second towards piece subassembly. The first punching sheet assembly comprises a plurality of first teeth, the first teeth are arranged along the circumferential direction of the yoke iron core, and a closed first wire slot is defined by adjacent first teeth in the first teeth and the yoke iron core; the second punching sheet assembly and the first punching sheet assembly are arranged along the axial direction, the second punching sheet assembly comprises a plurality of second teeth, the plurality of second teeth are arranged along the circumferential direction of the yoke iron core, and a second wire groove which is open towards the axial line is formed by the adjacent second teeth and the yoke iron core in the plurality of second teeth.

The utility model provides a stator core, including yoke portion iron core and tooth portion iron core, tooth portion iron core includes that first towards piece subassembly and second towards the piece subassembly, and first wire casing towards the piece subassembly is first wire casing of confined, and the second is towards the wire casing of piece subassembly for having open-ended second wire casing. The first punching sheet assembly and the second punching sheet assembly are arranged along the axial direction. When stator core accomplished the wire winding, because the second is towards the piece subassembly and is had the second wire casing to the second wire casing has the opening, so need not to punch the opening of first wire casing and second wire casing again after the wire winding is accomplished, and then need not punch the opening again after the wire winding is accomplished, avoid entering into first wire casing and second wire casing because of punching the opening and produce iron fillings, reduce the impaired probability of winding in first wire casing and the second wire casing.

Because first wire casing of first towards the piece subassembly is confined wire casing, and first wire casing is not the opening, so when winding on stator core, first towards the piece subassembly can promote stator core's intensity for the second provides the support towards the piece subassembly, and then makes the coil can stably wind on stator core. And because first towards the piece subassembly can provide the support for stator core, so when blanking second towards piece subassembly and first towards the piece subassembly, cut out the opening of second wire casing and also can not influence wire-wound normal clear.

Because the first wire casing of the first punching sheet assembly is a closed wire casing, the second wire casing of the second punching sheet assembly is provided with an opening, namely, part of the wire casings of the stator core are closed, and part of the wire casings are opened, the influence of the closed first wire casing on the performance of the motor is reduced, the overall performance loss of the motor is small, and the torque and the efficiency of the motor are ensured.

Specifically, the first punching sheet assembly and the second punching sheet assembly are formed in a high-punch mode, the punching sheets of the first punching sheet assembly and the punching sheets of the second punching sheet assembly can be connected into a whole through buckling points, the connected first punching sheet assembly and the connected second punching sheet assembly can be wound, and the first punching sheet assembly is used for supporting the tooth part iron core. And after the winding of the tooth iron core is finished, pressing the tooth iron core into the yoke iron core.

Additionally, the utility model provides a stator core among the above-mentioned technical scheme can also have following additional technical characterstic:

the utility model discloses an among the technical scheme, first towards the thickness of piece subassembly in the axial is first thickness, and first towards piece subassembly and second towards the thickness of piece subassembly in the axial is the second thickness, first thickness less than or equal to 0.5 times's second thickness.

In this technical scheme, first towards the thickness of piece subassembly in the axial is first thickness, and first towards the thickness of piece subassembly and second towards the thickness of piece subassembly in the axial is the second thickness, and stator core's axial thickness is the second thickness promptly, and first thickness less than or equal to 0.5 times's second thickness, and first thickness is less than or equal to half of stator core gross thickness promptly, further reduces because of the influence that first line groove closed and cause the motor, and then ensures the efficiency and the torque of motor.

The utility model discloses an among the technical scheme, first thickness more than or equal to 0.1 times the second thickness.

In this technical scheme, first thickness more than or equal to 0.1 times's second thickness, first punching sheet subassembly thickness more than or equal to stator core is one tenth of axial gross thickness promptly for stator core possesses certain intensity at the wire winding in-process, promotes the stability of first tooth and second tooth at the wire winding in-process.

The utility model discloses an among the technical scheme, first quantity towards the piece subassembly is at least two sets of, and the second is for a set of at least towards the quantity of piece subassembly, is first towards the piece subassembly at tooth portion iron core ascending both ends axially.

In this technical scheme, first quantity towards the piece subassembly is at least two sets of for tooth portion iron core all can be for having the first towards the piece subassembly of first wire casing of confined at the ascending both ends of axial, and then prevents that the second from being located the tip and leading to having the unable by stable support of open-ended second wire casing towards the piece subassembly, further promotes tooth portion iron core at the stability of wire winding in-process.

The quantity of second towards the piece subassembly is at least a set of and then reduces the influence of first wire casing of confined to the motor performance, and then promotes the torque and the efficiency of motor, ensures the performance of motor.

The number of the first punching sheet assemblies can also be at least one group, the number of the second punching sheet assemblies is at least one group, and the first punching sheet assemblies and the second punching sheet assemblies are respectively arranged at the two ends of the tooth part iron core in the axial direction.

The number of the first punching assemblies can be at least one group, the number of the second punching assemblies is at least two groups, and the two ends of the tooth part iron core in the axial direction are the second punching assemblies.

The utility model discloses an among the technical scheme, at least two sets of first punching assemblies are less than at least a set of second punching assemblies thickness at the axial to the ascending thickness of piece subassembly towards the axial.

In the technical scheme, the axial thickness of at least two groups of first punching sheet assemblies is smaller than the axial thickness of at least one group of second punching sheet assemblies, namely the axial total thickness of the first punching sheet assemblies is smaller than the axial total thickness of the second punching sheet assemblies, so that the strength of the stator core is ensured, and the influence of the closed first wire grooves on the performance of the motor is further reduced.

The utility model discloses an among the technical scheme, at least two sets of first towards the piece subassembly and at least a set of second towards the piece subassembly alternate arrangement in the axial.

In the technical scheme, at least two groups of first punching assemblies and at least one group of second punching assemblies are alternately arranged in the axial direction, so that the first punching assemblies can be distributed at a plurality of positions in the axial direction of the stator core, the second punching assemblies are distributed more dispersedly in the axial direction of the stator core, the continuous thickness of the second punching assemblies in the axial direction is reduced, and the supporting effect of the first punching assemblies on the second punching assemblies is improved.

The utility model discloses an among the technical scheme, first quantity towards the piece is greater than the quantity towards the piece subassembly of second.

In the technical scheme, the number of the first punching sheet assemblies is larger than that of the second punching sheet assemblies, so that the first punching sheet assemblies are distributed more widely, the supporting effect of the first punching sheet assemblies on the second punching sheet assemblies is further improved, and the strength of the stator core is further improved.

The utility model discloses an among the technical scheme, yoke portion iron core is the annular, and yoke portion iron core's inner circle is provided with a plurality of first mounting grooves along circumference, and a plurality of first teeth inlay respectively in a plurality of first mounting grooves.

In this technical scheme, be annular yoke portion iron core and be provided with a plurality of first mounting grooves in circumference to be located yoke portion iron core's inner circle, and then realize the installation and fixed to a plurality of first teeth, further promote the stability of first tooth. And be provided with a plurality of first mounting grooves along circumference through the inner circle at yoke portion iron core to install and fix a plurality of first teeth through first mounting groove, make yoke portion iron core and a plurality of first tooth be split type structure, and then realize at the outside wire winding of tooth portion iron core, reduce the wire winding degree of difficulty, simplify winding technology.

In one embodiment of the present invention, the plurality of first teeth include a plurality of first straight teeth and a plurality of first curved teeth; each first straight tooth of the plurality of first straight teeth extends in a radial direction; the first bent teeth and the first straight teeth are alternately arranged.

In the technical scheme, each first straight tooth in the plurality of first straight teeth extends along the radial direction; a plurality of first curved teeth and a plurality of first straight tooth are arranged in turn, and then two parts inside and outside are separated in first wire casing for two-layer coil can be fixed in first wire casing respectively inside and outside.

In a technical solution of the present invention, the plurality of first curved teeth extend in a Z-shape or an S-shape.

In this technical scheme, a plurality of first curved teeth are Z shape or S-shaped extension, reduce the degree of difficulty when the coil is wound, and then make the wire winding more convenient.

In a preferred embodiment of the present invention, the first plurality of straight teeth and the first plurality of curved teeth are equal in number.

In this technical scheme, the quantity of a plurality of first straight-teeth and a plurality of first straight-teeth is the same for first straight-teeth and first dogtooth one-to-one, and can alternate arrangement, and then make the wire casing can all carry out the coiling fast more conveniently.

In one embodiment of the present invention, the plurality of second teeth include a plurality of second straight teeth and a plurality of second curved teeth; the plurality of second straight teeth are opposite to the plurality of first straight teeth; the second plurality of bent teeth is opposite to the first plurality of bent teeth.

In the technical scheme, the plurality of second straight teeth are opposite to the plurality of first straight teeth; the plurality of second bent teeth are opposite to the plurality of first bent teeth, so that the stator core can form a wire slot which is consistent along the axial direction, and the performance stability of the motor is improved.

Specifically, the plurality of second straight teeth may be opposite to the plurality of first straight teeth, and a projection of a profile of the plurality of second straight teeth and a projection of a profile of the plurality of first straight teeth along the axial direction of the stator core coincide with each other.

The plurality of second bent teeth and the plurality of first bent teeth are opposite, and the projection of the profile of the plurality of second bent teeth and the projection of the profile of the plurality of first bent teeth along the axial direction of the stator core coincide.

The utility model discloses the second aspect provides a motor, include as above-mentioned any technical scheme's stator core, consequently this motor possesses above-mentioned any technical scheme's whole beneficial effect of stator core.

The utility model discloses the third aspect provides an electrical apparatus, include as above-mentioned any technical scheme's motor, consequently this electrical apparatus possesses whole beneficial effect of above-mentioned any technical scheme's motor.

In a technical solution of the present invention, the electric appliance includes a fan, an air conditioner, a refrigerator or a washing machine.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 shows one of the structural schematics of a stator core according to an embodiment of the invention;

fig. 2 shows a second schematic structural view of a stator core according to an embodiment of the invention;

fig. 3 isbase:Sub>A cross-sectional viewbase:Sub>A-base:Sub>A of the structure of the stator core shown in fig. 2 according to an embodiment of the present invention;

fig. 4 shows a schematic diagram of the efficiency of an electric machine as a function of the rotational speed according to an embodiment of the invention;

fig. 5 shows a schematic view of the torque versus rotational speed of an electric machine according to an embodiment of the invention;

fig. 6 shows a schematic structural view of a yoke core corresponding to a first stamped sheet assembly according to an embodiment of the invention;

fig. 7 shows a schematic structural view of a first tooth according to an embodiment of the invention;

fig. 8 shows a schematic structural view of a yoke core corresponding to a second lamination assembly according to an embodiment of the present invention;

fig. 9 shows a schematic structural view of a second tooth according to an embodiment of the invention.

Wherein, the correspondence between the reference numbers and the part names in fig. 1 to 9 is:

100 first punching sheet assembly, 110 yoke iron core, 120 first tooth, 122 first straight tooth, 124 first bent tooth, 130 first wire groove, 140 first mounting groove, 200 second punching sheet assembly, 220 second tooth, 222 second straight tooth, 224 second bent tooth, 230 second wire groove, 240 second mounting groove, 250 opening, 300 tooth iron core.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

A stator core, a motor, and an electric appliance according to some embodiments of the present invention will be described below with reference to fig. 1 to 9.

In an embodiment of the present invention, as shown in fig. 1 and 2, a stator core is provided, which includes a yoke core and a tooth core, wherein the tooth core includes a first punching sheet assembly 100 and a second punching sheet assembly 200. The first punching sheet assembly 100 comprises a plurality of first teeth 120, the plurality of first teeth 120 are arranged along the circumferential direction of the yoke iron core 110, and a closed first linear slot 130 is defined by the adjacent first teeth 120 of the plurality of first teeth 120 and the yoke iron core; the second punching sheet assembly 200 and the first punching sheet assembly 100 are arranged along the axial direction, the second punching sheet assembly 200 comprises a plurality of second teeth 220, the plurality of second teeth 220 are arranged along the circumferential direction of the yoke iron core 110, and a second linear slot 230 facing the axial line opening 250 is defined by the adjacent second teeth 220 in the plurality of second teeth 220 and the yoke iron core 110.

In this embodiment, the stator core includes a yoke core 110 and a tooth core 300, the tooth core 300 includes a first punching sheet assembly 100 and a second punching sheet assembly 200, a wire slot of the first punching sheet assembly 100 is a closed first wire slot 130, and a wire slot of the second punching sheet assembly 200 is a second wire slot 230 having an opening 250. The first punching sheet assembly 100 and the second punching sheet assembly 200 are arranged along the axial direction. When the stator core finishes winding, the second punching sheet assembly 200 is provided with the second wire groove 230, and the second wire groove 230 is provided with the opening 250, so that the openings 250 of the first wire groove 130 and the second wire groove 230 do not need to be punched after winding is finished, the openings 250 do not need to be punched after winding is finished, scrap iron generated by punching the openings 250 is prevented from entering the first wire groove 130 and the second wire groove 230, and the probability that windings in the first wire groove 130 and the second wire groove 230 are damaged is reduced.

Because the first wire groove 130 of the first punching sheet assembly 100 is a closed wire groove, and the first wire groove 130 is not opened 250, when winding wires on the stator core, the first punching sheet assembly 100 can provide support for the second punching sheet assembly 200, so that the strength of the stator core is improved, and then the coil can be stably wound on the stator core. And because the first punching sheet assembly 100 can provide support for the stator core, when the second punching sheet assembly 200 and the first punching sheet assembly 100 are punched, the opening 250 of the second wire groove 230 is cut out, and the normal operation of wire winding cannot be influenced.

Because the first wire slot 130 of the first punching sheet assembly 100 is a closed wire slot, and the second wire slot 230 of the second punching sheet assembly 200 has an opening 250, that is, part of the wire slots of the stator core are closed, and part of the wire slots are open 250, the influence of the closed first wire slot 130 on the performance of the motor is reduced, so that the overall performance loss of the motor is small, and the torque and the efficiency of the motor are ensured.

Specifically, the first punching sheet assembly 100 and the second punching sheet assembly 200 are formed by high punching together, a plurality of punching sheets of the first punching sheet assembly 100 and the second punching sheet assembly 200 can be connected into a whole through buckling points, the connected first punching sheet assembly 100 and the second punching sheet assembly 200 can be wound, and the first punching sheet assembly 100 is used for supporting the tooth part iron core 300. After the winding of the tooth core 300 is completed, the tooth core 300 is press-fitted into the yoke core.

Specifically, in the case of all the openings 250 of the slots of the stator core, since the strength of the stator core needs to be ensured during the winding process, the openings 250 of the outlet slots need to be cut on the stator core after the winding process is completed on the stator core, and metal chips are generated during the cutting process of the openings 250. Because the coil comprises sinle silk and outer insulated paint, the insulating paint can be damaged to the metal fillings, and then makes sinle silk and iron core switch on, will influence the normal operating of motor like this. Set up to confined wire casing through with first wire casing 130, set up second wire casing 230 into the wire casing that has opening 250, make opening 250 of second wire casing 230 can directly blank when blanking first towards the piece and accomplish, provide certain intensity for stator core through first towards piece subassembly 100 when the wire winding, can make the wire winding accomplish smoothly, also can avoid the metal fillings that blanking wire casing opening 250 produced to enter into the wire casing and damage the coil, reduce the coil damage probability in first wire casing 130 and the second wire casing 230, promote the motor stability at the during operation.

Specifically, under the condition that all slots of the stator core are not provided with the opening 250, the magnetic leakage of the motor can be increased, the efficiency and the output power of the motor are reduced, and further the performance of the motor is greatly influenced. Through setting up first wire casing 130 to confined wire casing, set up second wire casing 230 to the wire casing that has opening 250 for the performance of motor compares with the performance of the motor of all openings 250 of wire casing, and it is less to descend, and the range of descending can be ignored even, and is less to the overall performance influence of motor, and then has ensured the torque and the efficiency of motor.

Specifically, the axial, circumferential, and radial directions in this application are those of the stator core.

Specifically, the first punching assembly 100 includes a plurality of first punching sheets, each of which includes a yoke core 110 and a plurality of first teeth 120.

The second punch segment assembly 200 includes a plurality of second punch segments, each second punch segment including a yoke core 110 and a plurality of second teeth 220.

The present embodiment provides a stator core, and in addition to the technical features of the above-described embodiments, further includes the following technical features.

As shown in fig. 2 and fig. 3, the axial thickness of the first stamped sheet assembly 100 is a first thickness, the axial thicknesses of the first stamped sheet assembly 100 and the second stamped sheet assembly 200 are a second thickness, and the first thickness is less than or equal to 0.5 times the second thickness.

In this embodiment, the thickness of the first stamped sheet assembly 100 in the axial direction is a first thickness, the thicknesses of the first stamped sheet assembly 100 and the second stamped sheet assembly 200 in the axial direction are second thicknesses, that is, the axial thickness of the stator core is the second thickness, the first thickness is smaller than or equal to 0.5 times of the second thickness, that is, the first thickness is smaller than or equal to half of the total thickness of the stator core, and therefore the influence on the motor caused by the closing of the first wire slot 130 is further reduced, and the efficiency and the torque of the motor are further ensured.

Specifically, the ratio of the first thickness to the second thickness is 0.12, and when the ratio of the first thickness to the second thickness is 0.12, that is, when the thickness of the first punching sheet assembly 100 in the axial direction accounts for 12% of the total thickness of the stator core in the axial direction, compared with a motor having all openings 250 of the wire slots, as shown in fig. 4 and 5, the torque and the efficiency of the motor are substantially consistent, and the influence on the performance of the motor is negligible, or the performance of the motor is hardly influenced.

Specifically, the first thickness is the sum of the thicknesses of all the first punching assemblies 100 in the axial direction. The second thickness is the sum of the thicknesses of all the first punching assemblies 100 and all the second punching assemblies 200 in the axial direction.

The present embodiment provides a stator core, and in addition to the technical features of the above embodiments, the present embodiment further includes the following technical features.

As shown in fig. 1 to 3, the first thickness is equal to or greater than 0.1 times the second thickness.

In this embodiment, the first thickness is greater than or equal to 0.1 times the second thickness, that is, the thickness of the first punching sheet assembly 100 in the axial direction is greater than or equal to one tenth of the total thickness of the stator core in the axial direction, so that the stator core has a certain strength in the winding process, and the stability of the first teeth 120 and the second teeth 220 in the winding process is improved.

The present embodiment provides a stator core, and in addition to the technical features of the above-described embodiments, further includes the following technical features.

As shown in fig. 1 to 3, the number of the first stamped steel assemblies 100 is at least two, the number of the second stamped steel assemblies 200 is at least one, and both ends of the toothed core 300 in the axial direction are the first stamped steel assemblies 100.

In this embodiment, the number of the first punching assemblies 100 is at least two, so that both ends of the tooth core 300 in the axial direction can be the first punching assemblies 100 having the closed first wire slot 130, thereby preventing the second punching assembly 200 from being located at the end portion to cause that the second wire slot 230 having the opening 250 cannot be stably supported, and further improving the stability of the tooth core 300 in the winding process.

The number of the second punching assemblies 200 is at least one group, so that the influence of the first wire grooves 130 on the performance of the motor is reduced, the torque and the efficiency of the motor are improved, and the performance of the motor is ensured.

The number of the first punching assemblies 100 can also be at least one group, the number of the second punching assemblies 200 is at least one group, and the first punching assemblies 100 and the second punching assemblies 200 are respectively arranged at two ends of the tooth part iron core 300 in the axial direction.

The number of the first punching assemblies 100 can also be at least one group, the number of the second punching assemblies 200 is at least two groups, and the two ends of the tooth iron core 300 in the axial direction are the second punching assemblies 200. The present embodiment provides a stator core, and in addition to the technical features of the above-described embodiments, further includes the following technical features.

As shown in fig. 1 to 3, the axial thickness of at least two sets of first stamped steel assemblies 100 is smaller than the axial thickness of at least one set of second stamped steel assemblies 200.

In this embodiment, the thickness of the at least two sets of first stamped steel assemblies 100 in the axial direction is smaller than the thickness of the at least one set of second stamped steel assemblies 200 in the axial direction, that is, the total thickness of the first stamped steel assemblies 100 in the axial direction is smaller than the total thickness of the second stamped steel assemblies 200 in the axial direction, so that the strength of the stator core is ensured, and the influence of the closed first wire slots 130 on the performance of the motor is further reduced.

The present embodiment provides a stator core, and in addition to the technical features of the above-described embodiments, further includes the following technical features.

As shown in fig. 1 to 3, at least two sets of first punching assemblies 100 and at least one set of second punching assemblies 200 are alternately arranged in the axial direction.

In this embodiment, at least two sets of first punching assemblies 100 and at least one set of second punching assemblies 200 are arranged alternately in the axial direction, so that the first punching assemblies 100 can be distributed at a plurality of positions in the axial direction of the stator core, and further the second punching assemblies 200 are distributed more dispersedly in the axial direction of the stator core, thereby reducing the continuous thickness of the second punching assemblies 200 in the axial direction, and improving the supporting effect of the first punching assemblies 100 on the second punching assemblies 200.

Specifically, the number of the first punching assemblies 100 is two, the number of the second punching assemblies 200 is one, and the two sets of the first punching assemblies 100 are respectively arranged on two sides of the second punching assemblies 200 in the axial direction.

Specifically, the number of the first punching assemblies 100 is three, the number of the second punching assemblies 200 is two, the three first punching assemblies 100 and the two second punching assemblies 200 are alternately arranged, and the first punching assemblies 100 are arranged at two axial ends of the stator core.

Specifically, the number of the first punching assemblies 100 is five, the number of the second punching assemblies 200 is four, the five groups of the first punching assemblies 100 and the four groups of the second punching assemblies 200 are alternately arranged, and the first punching assemblies 100 are arranged at two ends of the stator core in the axial direction.

Further, the thickness of the single set of first stamped components 100 in the axial direction is smaller than that of the single set of second stamped components 200 in the axial direction.

The thicknesses of each group of first punching assemblies 100 in the axial direction can be the same or different.

The present embodiment provides a stator core, and in addition to the technical features of the above embodiments, the present embodiment further includes the following technical features.

As shown in fig. 1 to 3, the number of the first stamped sheet assemblies 100 is greater than that of the second stamped sheet assemblies 200.

In this embodiment, the number of the first punching sheet assemblies 100 is greater than the number of the second punching sheet assemblies 200, so that the first punching sheet assemblies 100 are distributed more widely, the supporting effect of the first punching sheet assemblies 100 on the second punching sheet assemblies 200 is further improved, and the strength of the stator core is further improved.

The present embodiment provides a stator core, and in addition to the technical features of the above embodiments, the present embodiment further includes the following technical features.

As shown in fig. 6 and 7, the yoke core 110 has an annular shape, the inner ring of the yoke core 110 is provided with a plurality of first mounting grooves 140 along the circumferential direction, and the plurality of first teeth 120 are respectively fitted in the plurality of first mounting grooves 140.

In this embodiment, the annular yoke core 110 is provided with a plurality of first mounting grooves 140 in the circumferential direction and is located at the inner ring of the yoke core 110, so that the plurality of first teeth 120 are mounted and fixed, and the stability of the first teeth 120 is further improved. And a plurality of first mounting grooves 140 are formed in the inner ring of the yoke iron core 110 in the circumferential direction, and the plurality of first teeth 120 are mounted and fixed through the first mounting grooves 140, so that the yoke iron core 110 and the plurality of first teeth 120 are of a split structure, the external winding of the tooth iron core 300 is realized, the winding difficulty is reduced, and the winding process is simplified.

Further, the yoke core 110 is a ring-shaped stator yoke core that is spliced to each other.

The present embodiment provides a stator core, and in addition to the technical features of the above embodiments, the present embodiment further includes the following technical features.

As shown in fig. 8 and 9, the yoke core 110 has an annular shape, the inner ring of the yoke core 110 is provided with a plurality of second mounting grooves 240 along the circumferential direction, and the plurality of second teeth 220 are respectively fitted in the plurality of second mounting grooves 240.

In this embodiment, the yoke core 110 having an annular shape is provided with a plurality of second mounting grooves 240 in a circumferential direction, and is located at an inner ring of the yoke core 110, so that the plurality of second teeth 220 are mounted and fixed, and stability of the second teeth 220 is further improved. And a plurality of second mounting grooves 240 are formed in the inner ring of the yoke iron core 110 in the circumferential direction, and the plurality of second teeth 220 are mounted and fixed through the second mounting grooves 240, so that the yoke iron core 110 and the plurality of second teeth 220 are of split structures, the external winding of the yoke iron core is realized, the winding difficulty is reduced, and the winding process is simplified.

Further, the yoke core 110 is a ring-shaped stator yoke core that is spliced to each other.

The present embodiment provides a stator core, and in addition to the technical features of the above-described embodiments, further includes the following technical features.

As shown in fig. 7, the plurality of first teeth 120 includes a plurality of first straight teeth 122 and a plurality of first curved teeth 124; each first spur 122 of the plurality of first spurs 122 extends radially; the plurality of first curved teeth 124 are alternately arranged with the plurality of first straight teeth 122.

In this embodiment, each first spur 122 of the plurality of first spurs 122 extends radially; the first bent teeth 124 and the first straight teeth 122 are alternately arranged to further divide the first wire slot 130 into an inner portion and an outer portion, so that the inner and outer layers of coils can be respectively fixed in the first wire slot 130.

Further, the inner rings of the first plurality of straight teeth 122 and the first plurality of bent teeth 124 are integrally connected in the circumferential direction.

The present embodiment provides a stator core, and in addition to the technical features of the above-described embodiments, further includes the following technical features.

As shown in fig. 7, the plurality of first curved teeth 124 extend in a Z-shape or S-shape.

In this embodiment, the first curved teeth 124 extend in a Z-shape or S-shape, which reduces the difficulty of winding the coil, and further facilitates the winding.

The present embodiment provides a stator core, and in addition to the technical features of the above embodiments, the present embodiment further includes the following technical features.

As shown in fig. 7, the number of the first plurality of straight teeth 122 and the number of the first plurality of bent teeth 124 are the same.

In this embodiment, the number of the first straight teeth 122 is the same as that of the first straight teeth 122, so that the first straight teeth 122 correspond to the first curved teeth 124 one by one, and the first curved teeth 122 and the first curved teeth 124 can be alternately arranged, so that the wire grooves can be wound more conveniently and more quickly.

The present embodiment provides a stator core, and in addition to the technical features of the above-described embodiments, further includes the following technical features.

As shown in fig. 9, the plurality of second teeth 220 includes a plurality of second straight teeth 222 and a plurality of second bent teeth 224; the second plurality of spurs 222 are opposite the first plurality of spurs 122; the second plurality of bent teeth 224 is opposite the first plurality of bent teeth 124.

In this embodiment, the plurality of second spurs 222 are opposite the plurality of first spurs 122; the plurality of second bent teeth 224 are opposite to the plurality of first bent teeth 124, so that the stator core can form a wire slot which is consecutive along the axial direction, and the performance stability of the motor is further improved.

Specifically, the plurality of second straight teeth 222 may be opposite to the plurality of first straight teeth 122, and a projection of a profile of the plurality of second straight teeth 222 and a projection of a profile of the plurality of first straight teeth 122 along the axial direction of the stator core coincide with each other.

The second plurality of bent teeth 224 may be opposite to the first plurality of bent teeth 124, and a projection of a profile of the second plurality of bent teeth 224 and a projection of a profile of the first plurality of bent teeth 124 along the axial direction of the stator core may coincide with each other.

Further, the plurality of second straight teeth 222 and the plurality of first straight teeth 122 have the same shape and are opposite to each other. The second plurality of bent teeth 224 are shaped and positioned opposite the first plurality of bent teeth 124.

Specifically, the stator core includes 24 stator teeth, and the number of the first plurality of bent teeth 124, the second plurality of bent teeth 224, the first plurality of straight teeth 122, and the second plurality of straight teeth 222 is 12.

Specifically, the stator core includes 16 stator teeth, and the number of the first plurality of bent teeth 124, the second plurality of bent teeth 224, the first plurality of straight teeth 122, and the second plurality of straight teeth 222 is 8.

Further, as shown in fig. 9, each second spur 222 of the plurality of second spurs 222 extends in a radial direction; the plurality of second bent teeth 224 and the plurality of second straight teeth 222 are alternately arranged, and further, an inner portion and an outer portion are separated in the second wire groove 230, so that the inner layer and the outer layer of coils can be respectively fixed in the second wire groove 230.

Further, the inner race of the second plurality of straight teeth 222 and the second plurality of curved teeth 224 is circumferentially interrupted with an opening 250.

The present embodiment provides a stator core, and in addition to the technical features of the above-described embodiments, further includes the following technical features.

As shown in fig. 9, the second plurality of bent teeth 224 extend in a Z-shape or S-shape.

In this embodiment, the second curved teeth 224 extend in a Z-shape or S-shape, which reduces the difficulty of winding the coil, and further facilitates the winding.

The present embodiment provides a stator core, and in addition to the technical features of the above-described embodiments, further includes the following technical features.

As shown in fig. 9, the number of the second plurality of straight teeth 222 and the second plurality of bent teeth 224 is the same.

In this embodiment, the number of the second straight teeth 222 is the same as that of the second straight teeth 222, so that the second straight teeth 222 and the second curved teeth 224 correspond to each other one by one and can be alternately arranged, and thus the wire slots can be wound more conveniently and quickly.

In an embodiment of the present invention, there is provided a motor including the stator core according to any one of the above embodiments, and therefore, the motor has all the advantages of the stator core according to any one of the above embodiments.

In an embodiment of the present invention, there is provided an electrical appliance, including the motor according to any of the above embodiments, so that the electrical appliance has all the advantages of the motor according to any of the above embodiments.

The electric appliance includes a fan, an air conditioner, a refrigerator or a washing machine.

In the claims, the specification and the drawings attached to the specification, the term "plurality" means two or more, unless there is an additional definite limitation, the terms "upper", "lower" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings only for the purpose of describing the present invention more conveniently and simplifying the description process, but not for the purpose of indicating or implying that the referred device or element must have the described specific orientation, be constructed and operated in the specific orientation, and thus the description should not be construed as limiting the present invention; the terms "connect," "mount," "secure," and the like are to be construed broadly, and for example, "connect" may refer to a fixed connection between multiple objects, a removable connection between multiple objects, or an integral connection; the multiple objects may be directly connected to each other or indirectly connected to each other through an intermediate. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art from the above data.

In the claims, the specification and drawings of the specification, the description of the term "one embodiment," "some embodiments," "specific embodiments," and the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In the claims, the description and the drawings of the present application, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (15)

1. A stator core, comprising:

a yoke iron core;

the tooth part iron core comprises a first punching sheet assembly and a second punching sheet assembly;

the first punching sheet assembly comprises a plurality of first teeth, the first teeth are arranged along the circumferential direction of the yoke iron core, and a closed first wire slot is defined by adjacent first teeth in the first teeth and the yoke iron core;

the second is towards the piece subassembly with first towards the piece subassembly is arranged along the axial, the second is towards the piece subassembly including a plurality of second tooths, a plurality of second tooths are followed yoke portion iron core's circumference is arranged, adjacent second tooths in a plurality of second tooths with yoke portion iron core encloses out the orientation stator core's axis open-ended second wire casing.

2. The stator core according to claim 1, wherein the first punching sheet assembly has a first thickness in the axial direction, the first punching sheet assembly and the second punching sheet assembly have a second thickness in the axial direction, and the first thickness is less than or equal to 0.5 times the second thickness.

3. The stator core of claim 2 wherein the first thickness is equal to or greater than 0.1 times the second thickness.

4. The stator core according to claim 1, wherein the number of the first punching assemblies is at least two, the number of the second punching assemblies is at least one, and both ends of the tooth core in the axial direction are the first punching assemblies; or

The number of the first punching assemblies is at least one group, the number of the second punching assemblies is at least one group, and the first punching assemblies and the second punching assemblies are respectively arranged at two ends of the tooth part iron core in the axial direction; or

The number of the first punching sheet assemblies is at least one group, the number of the second punching sheet assemblies is at least two groups, and the two ends of the tooth part iron core in the axial direction are both the second punching sheet assemblies.

5. The stator core as claimed in claim 4 wherein at least two sets of the first punching assemblies have a smaller thickness in the axial direction than at least one set of the second punching assemblies.

6. The stator core according to claim 4, wherein at least two sets of the first punching assemblies and at least one set of the second punching assemblies are alternately arranged in the axial direction.

7. The stator core according to claim 1, wherein the number of the first stamped assemblies is greater than the number of the second stamped assemblies.

8. The stator core according to any one of claims 1 to 7, wherein the yoke core has an annular shape, an inner ring of the yoke core is provided with a plurality of first mounting grooves along a circumferential direction, and the plurality of first teeth are respectively embedded in the plurality of first mounting grooves.

9. The stator core according to any one of claims 1 to 7 wherein the first plurality of teeth comprises:

a plurality of first straight teeth, each of the plurality of first straight teeth extending in a radial direction;

a plurality of first bent teeth alternately arranged with the plurality of first straight teeth.

10. The stator core according to claim 9 wherein the first plurality of bent teeth extend in a Z-shape or an S-shape.

11. The stator core of claim 9 wherein the first plurality of straight teeth and the first plurality of bent teeth are equal in number.

12. The stator core of claim 9 wherein the plurality of second teeth comprise:

a plurality of second straight teeth opposite the plurality of first straight teeth;

a second plurality of bent teeth opposite the first plurality of bent teeth.

13. An electrical machine comprising a stator core according to any one of claims 1 to 12.

14. An electric appliance comprising an electric machine according to claim 13.

15. The appliance according to claim 14, characterized in that the appliance comprises a fan, an air conditioner, a refrigerator or a washing machine.

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