CN215378581U - Stator punching sheet, stator core, stator and motor - Google Patents
Stator punching sheet, stator core, stator and motor Download PDFInfo
- Publication number
- CN215378581U CN215378581U CN202121507617.4U CN202121507617U CN215378581U CN 215378581 U CN215378581 U CN 215378581U CN 202121507617 U CN202121507617 U CN 202121507617U CN 215378581 U CN215378581 U CN 215378581U
- Authority
- CN
- China
- Prior art keywords
- stator
- concave
- lamination
- yoke
- tooth
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The utility model discloses a stator punching sheet, a stator core, a stator and a motor, wherein the stator punching sheet comprises a stator yoke part and a stator tooth part, the stator tooth part comprises a tooth body and a tooth shoe, one end of the tooth body is arranged on the inner peripheral wall of the stator yoke part, the tooth shoe is arranged at the other end of the tooth body, the number of the stator tooth parts is multiple, and the plurality of the stator tooth parts are arranged at intervals along the circumferential direction of the stator yoke part; the outer circumferential wall of the stator yoke portion is provided with a concave-convex structure, the concave-convex structure comprises a plurality of concave portions and a plurality of convex portions, and the concave portions and the convex portions are arranged in a staggered mode in the circumferential direction of the stator yoke portion. The stator punching sheet is used for manufacturing the motor, and can improve the temperature rise of the motor.
Description
Technical Field
The utility model relates to the technical field of motors, in particular to a stator punching sheet, a stator core, a stator and a motor.
Background
The development direction of motors, especially motors for household appliances, is high efficiency and low cost, but the temperature rise of the motors often limits the further improvement of the cost performance. Therefore, a stator punching sheet capable of improving the temperature rise of the motor needs to be provided.
SUMMERY OF THE UTILITY MODEL
The utility model mainly aims to provide a stator punching sheet and aims to improve the temperature rise of a motor.
In order to achieve the above object, the present invention provides a stator punching sheet, including:
a stator yoke; and
the stator tooth part comprises a tooth body and a plurality of tooth shoes, one end of the tooth body is arranged on the inner peripheral wall of the stator yoke part, the tooth shoes are arranged on the other end of the tooth body, and the plurality of stator tooth parts are arranged at intervals along the circumferential direction of the stator yoke part;
the outer circumferential wall of the stator yoke portion is provided with a concave-convex structure, the concave-convex structure comprises a plurality of concave portions and a plurality of convex portions, and the plurality of concave portions and the plurality of convex portions are arranged in a staggered mode in the circumferential direction of the stator yoke portion.
In an embodiment, the recess has a depth b1 in the radial direction of the stator yoke, and the minimum width of the stator yoke in the radial direction of the stator yoke is b2, 0.1< b1/b2< 0.4.
In an embodiment, an opening width of the recess in a circumferential direction of the stator yoke is b3, 1< b3/b1< 5.
In one embodiment, the minimum width of the tooth body in the circumferential direction of the stator yoke is b4, 0.4< b4/b2< 1.
In an embodiment, the stator yoke comprises a concave-convex section and a smooth section in the circumferential direction of the stator yoke, the concave-convex section has a plurality of concave parts, and the width of the smooth section is larger than that of the concave-convex section in the radial direction of the stator yoke.
In one embodiment, the smooth sections and the concave-convex sections are arranged in a staggered manner;
or the concave-convex section is annular.
In one embodiment, the stator yoke is square, a plurality of concave parts which are arranged at equal intervals are arranged on four sides of the stator yoke, the interval between the innermost points of two adjacent concave parts on any side of the stator punching sheet is b5,
the innermost points of the plurality of pockets of the stator yoke can form a square, the lower left corner vertex of the square is spaced x1 from the innermost point of the nearest upper first pocket, the upper left corner vertex of the square is spaced x2 from the innermost point of the nearest right first pocket, the upper right corner vertex of the square is spaced x3 from the innermost point of the nearest lower first pocket, and the lower right corner vertex of the square is spaced x4 from the innermost point of the nearest left first pocket;
wherein, x1 is x 3; x2 ═ x 4; b5/2, | x1-x2 |;
alternatively, x1 ═ x 2; x3 ═ x 4; b5/2, | x1-x3 |.
In one embodiment, the stator yoke is circular, and the plurality of recesses are arranged at equal intervals along the circumferential direction of the stator yoke, and the number of the recesses is even but not a multiple of 4.
The utility model also provides a stator core which comprises a plurality of stator punching sheets, wherein the stator punching sheets are arranged in a laminated mode.
In one embodiment, the concave parts of any two stator punching sheets are arranged oppositely.
In one embodiment, the concave parts of at least two stator punching sheets are arranged in a staggered mode.
In one embodiment, in the stacking direction of the plurality of stator punching sheets, the stator core includes a first stator lamination and a second stator lamination which are stacked, and the first stator lamination and the second stator lamination both include a plurality of stator punching sheets;
the concave parts of any two stator punching sheets in the first stator lamination block are arranged just opposite to each other, the concave parts of any two stator punching sheets in the second stator lamination block are arranged just opposite to each other, and the concave parts of the stator punching sheets in the first stator lamination block and the concave parts of the stator punching sheets in the second stator lamination block are arranged in a staggered mode.
In an embodiment, the first stator lamination block and the second stator lamination block are both multiple and are stacked in a staggered manner.
The utility model also provides a stator which comprises the stator core.
The utility model also provides a motor which comprises the stator.
In above-mentioned stator punching, the periphery wall of stator punching is provided with concave-convex structure, and concave-convex structure includes a plurality of recesses and a plurality of convex part, and a plurality of recesses and a plurality of convex part are arranged along stator yoke portion's circumference is crisscross to can effectively increase the heat radiating area of stator punching. And the heat radiating area who forms stator core's stator punching increases, can make stator core's heat radiating area increase to can make the stator including stator core have better radiating effect, also can make the motor including the stator have better radiating effect, can improve the temperature rise of motor in the course of the work, avoid the motor high temperature in the course of the work.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a stator punching sheet according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a stator punching sheet according to another embodiment of the present invention;
fig. 3 is a comparison diagram of the heat dissipation areas of the stator lamination in the present invention and the stator lamination in the related art;
fig. 4 is a comparison diagram of the stator punching sheet of the present invention and the die arrangement material of the stator punching sheet in the related art;
fig. 5 is a schematic perspective view of a stator according to an embodiment of the present invention;
fig. 6 is a schematic perspective view of a stator according to another embodiment of the present invention;
fig. 7 is a schematic perspective view of a stator according to another embodiment of the present invention;
fig. 8 is a schematic perspective view of a stator according to another embodiment of the present invention.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) | |
| 10 | |
| Stator yoke | |
| | Stator tooth | 10c | Inner |
|
| | Projecting structure | 10e | First |
|
| 10f | |
12 | |
|
| 200 | |
300 | Convex |
|
| 310 | |
320 | |
|
| 322 | |
324 | |
|
| 202 | |
204 | |
|
| 210 | Concave- |
220 | Smooth segment |
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture, and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, if appearing throughout the text, "and/or" is meant to include three juxtaposed aspects, taking "A and/or B" as an example, including either the A aspect, or the B aspect, or both A and B satisfied aspects. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The utility model provides a stator punching sheet.
In the embodiment of the present invention, as shown in fig. 1 and 2, the stator lamination 12 includes a stator yoke portion 200 and a stator tooth portion 300. The stator yoke 200 is annular. The stator teeth 300 are provided on an inner circumferential wall of the stator yoke 200. The number of the stator teeth 300 is plural, and the plurality of stator teeth 300 are arranged at intervals in the circumferential direction of the stator teeth 300.
In this embodiment, the tooth shoe 320 includes a first tooth shoe 322 and a second tooth shoe 324. First tooth shoe 322 and second tooth shoe 324 are arranged in the circumferential direction of stator yoke 200 and are each connected to a free end of tooth body 310. Specifically, in the present embodiment, the length of the first tooth shoe 322 is the same as the length of the second tooth shoe 324 in the circumferential direction of the stator yoke 200. In this manner, the tooth shoe 320 is more easily manufactured.
In the present embodiment, the outer circumferential wall of the stator yoke 200 is provided with a concave-convex structure including a plurality of concave portions 202 and a plurality of convex portions 204, and the plurality of concave portions 202 and the plurality of convex portions 204 are arranged in a staggered manner in the circumferential direction of the stator yoke 200.
In the stator punching sheet 12, the outer peripheral wall of the stator punching sheet 12 is provided with the concave-convex structure, the concave-convex structure includes the plurality of concave portions 202 and the plurality of convex portions 204, and the plurality of concave portions 202 and the plurality of convex portions 204 are arranged along the circumferential direction of the stator yoke portion 200 in a staggered manner, so that the heat dissipation area of the stator punching sheet 12 can be effectively increased. Referring to fig. 3 specifically, in fig. 3, after the stator lamination 12a without the concave-convex structure on the peripheral wall is processed, the stator lamination 12 with the concave-convex structure on the peripheral wall can be obtained, and the heat dissipation area of the peripheral wall of the stator lamination 12 is larger than the heat dissipation area of the peripheral wall of the stator lamination 12 a. And the heat radiating area of the stator punching sheet 12 forming the stator core 10 is increased, so that the heat radiating area of the stator core 10 is increased, the stator comprising the stator core 10 can have a better heat radiating effect, the motor comprising the stator can also have a better heat radiating effect, the temperature rise of the motor in the working process can be improved, and the over-high temperature of the motor in the working process is avoided.
In the present embodiment, as shown in fig. 1 and 2, the depth of the recess 202 in the radial direction of the stator yoke 200 is b1, and the minimum width of the stator yoke 200 in the radial direction of the stator yoke 200 is b 2. Wherein 0.1< b1/b2< 0.4. b1/b2 can be 0.11, 0.15, 0.20,. 025, 0.30, 0.35, or 0.39. In the present embodiment, in the radial direction of the stator yoke 200, the minimum width b2 of the stator yoke 200 is the minimum width between the inner circumferential wall of the stator yoke 200 and the innermost point of the recess 202.
In the stator punching sheet 12, the depth of the concave portion 202 in the radial direction of the stator yoke portion 200 is b1, the minimum width of the stator yoke portion 200 in the radial direction of the stator yoke portion 200 is b2, wherein 0.1< b1/b2<0.4, so that the stator punching sheet 12 can have a large heat dissipation area, the stator punching sheet 12 can have good rigidity, and the situation that the rigidity of the stator punching sheet 12 is greatly reduced due to the fact that the radial depth b1 of the concave portion 202 is too large is avoided.
In the present embodiment, the opening width of the recess 202 in the circumferential direction of the stator yoke 200 is b3, 1< b3/b1< 5. Wherein b3/b1 can be 1.1, 1.5, 2.0, 2.5, 3.0, 3.5, 4.0, 4.5 or 4.9. Therefore, the stator punching sheet 12 can have a large heat dissipation area, and the stator punching sheet 12 can have good rigidity. Specifically, in this embodiment, b1 is 0.8-1.2mm, and b3 is 2-4 mm. More specifically, in the present embodiment, b1 is 1mm, and b3 is 3 mm.
In the present embodiment, the minimum width of the tooth body 310 in the circumferential direction of the stator yoke 200 is b4, 0.4< b4/b2< 1. Wherein b4/b2 can be 0.41, 0.5, 0.6, 0.7, 0.8, 0.9 or 0.99. In this way, the width of the tooth body 310 can be prevented from being too large. Specifically, in the present embodiment, the width of the tooth body 310 in the circumferential direction of the stator yoke 200 gradually decreases in the direction of the tooth body 310 toward the tooth shoe 320, that is, in the direction from the connecting end of the tooth body 310 with the stator yoke 200 to the free end of the tooth body 310, that is, in the outward and inward direction in the radial direction of the stator yoke 200. In this manner, it is more convenient to provide coils on the tooth body 310.
In the present embodiment, the stator yoke 200 includes concave-convex sections 210 in the circumferential direction of the stator yoke 200. The concave-convex section 210 has several concave portions 202. The plurality of concave parts 202 on the concave-convex section 210 are arranged at equal intervals. The plurality of recesses 202 on the concave-convex section 210 are arranged at equal intervals, so that the heat dissipation effect of the stator yoke portion 200 is more uniform.
In some embodiments, as shown in fig. 1, the stator yoke 200 also includes a smooth section 220. The smooth section 220 has no recess 202. The width of the smooth segment 220 in the radial direction of the stator yoke 200 is larger than the width of the concave-convex segment 210 in the radial direction of the stator yoke 200. The smooth section 220 with a larger width generally has a better heat dissipation effect than the concave-convex section 210 with a smaller width, and the concave portion 202 is arranged on the concave-convex section 210, so that the heat dissipation effect of the concave-convex section 210 can be enhanced, and the heat dissipation effect of the whole stator yoke portion 200 is more uniform.
Specifically, in the present embodiment, the smooth sections 220 are arranged in a staggered manner with the concave-convex sections 210. As such, not only can the heat dissipation effect of the entire stator yoke 200 be made more uniform, but also the rigidity of the entire stator yoke 200 can be made more uniform. More specifically, in the present embodiment, the stator yoke 200 is substantially square. The concave-convex section 210 is located at the middle of the side of the stator yoke 200 and the smooth section 220 is located at the corner of the stator yoke 200. It is understood that in other embodiments, the stator yoke 200 may have other polygonal shapes, such as pentagonal, hexagonal, etc.
In some embodiments, the concave-convex section 210 is annular, as shown in fig. 2. That is, in the present embodiment, the concave portion 202 is provided everywhere of the stator yoke 200, so that not only the heat dissipation effect of the entire stator yoke 200 can be made more uniform, but also the rigidity of the entire stator yoke 200 can be made more uniform. Specifically, in the present embodiment, the stator yoke 200 is substantially circular.
In this embodiment, the stator punching sheet 12 has a first position and a second position, and the stator punching sheet 12 at the second position rotates by a preset angle relative to the stator punching sheet 12 at the first position. The arrangement of the plurality of concave portions 202 and the convex portions 204 on the outer peripheral wall of the stator punching sheet 12 is satisfied, after the stator punching sheet 12 rotates from the first position to the second position by a preset angle, when the stator punching sheet 12 at the second position and the stator punching sheet 12 at the first position are stacked in the thickness direction of the stator punching sheet 12, the concave portions 202 of the stator punching sheet 12 at the second position and the concave portions 202 of the stator punching sheet 12 at the first position are arranged in a staggered manner, that is, the concave portions 202 of the stator punching sheet 12 at the second position and the convex portions 204 of the stator punching sheet 12 at the first position are arranged correspondingly.
In this embodiment, the stator punching sheet 12 can be switched between the first position and the second position during the rotation process. In this embodiment, the stator punching sheet 12 may refer to a process in which the stator punching sheet 12 horizontally rotates on a reference plane (the reference plane is parallel to an end surface of the stator punching sheet 12 in the thickness direction); the stator punching sheet 12 can also be referred to in the rotating process, and the stator punching sheet 12 rotates around the center line of the stator punching sheet 12.
Referring to fig. 4, in the two stator laminations 12 in fig. 4, it can be considered that the left stator lamination 12 is in the first position, and the right stator lamination 12 is in the second position, when the right stator lamination 12 translates to the left above the left stator lamination 12, the convex portion 204 of the upper stator lamination 12 corresponds to the concave portion 202 of the lower stator lamination 12. When the plurality of stator punching sheets 12 are stacked to form the stator core 10 of the stator, if the plurality of stator punching sheets 12 of the stator core 10 are all located at the first position or at the second position, the stator core 10 shown in fig. 5 and 6 can be obtained, and if the stator punching sheets 12 at the second position and the stator punching sheets 12 at the first position are staggered in the thickness direction, the stator core 10 shown in fig. 7 and 8 can be obtained.
In manufacturing the stator lamination 12, generally, a large (large) stator substrate is punched to obtain a plurality of stator laminations 12. When punching, in order to make two adjacent stator punching pieces 12 break, need to get rid of the material between two adjacent stator punching pieces 12, also there is the row between two adjacent stator punching pieces 12 to touch the materials. The less material is used for the die, the lower the material cost of the stator punching sheet 12. For example, a large stator substrate that originally can produce 100 stator laminations 12 can produce 102 stator laminations 12 after less material is used for the die arrangement. Thus, the material cost of the single stator punching sheet 12 can be reduced.
As shown in fig. 4, in the stator punching sheet 12, since the plurality of concave portions 202 are formed on the outer peripheral wall of the stator punching sheet 12, when the stator punching sheet 12 is manufactured, the concave portions 202 of adjacent sides of two adjacent stator punching sheets 12 can be controlled to be arranged in a staggered manner, that is, the concave portion 202 of one stator punching sheet 12 (the left stator punching sheet 12 in fig. 4, where the stator punching sheet 12 is located at a first position) corresponds to the convex portion 204 of another adjacent stator punching sheet 12 (the right stator punching sheet 12 in fig. 4, where the stator punching sheet 12 is located at a second position). As can be seen from fig. 4, in two adjacent stator laminations 12a, a distance between the two stator laminations 12a is a first distance; in the two adjacent stator laminations 12, the distance between the outermost point of the convex portion 204 of one stator lamination 12 and the outermost point of the convex portion 204 of the other stator lamination 12 is a second distance, the second distance is smaller than the first distance, and the material for the die-discharging between the two adjacent stator laminations 12 is smaller than the material for the die-discharging between the two adjacent stator laminations 12 a. Also when making above-mentioned stator punching 12, can reduce the row between two adjacent stator punching 12 and touch the material, and then reach the purpose that reduces the material cost of single stator punching 12. Therefore, the stator punching sheet 12 can improve the temperature rise of the motor and improve the cost performance of the motor.
In this embodiment, in the process of manufacturing the stator punching sheet 12, the maximum distance between two adjacent stator punching sheets 12 is the first distance, that is, on the premise of ensuring that the maximum distance between two adjacent stator punching sheets 12 is not changed, the manufacturing of the stator punching sheet 12 can reduce the material consumption for the die arrangement between two adjacent stator punching sheets 12, and further, the purpose of reducing the material cost of a single stator punching sheet 12 is achieved. In the present embodiment, the maximum distance between two adjacent stator laminations 12 is a distance between an innermost point of the concave portion 202 of one stator lamination 12 and an outermost point of the convex portion 204 of the other stator lamination 12 in the two adjacent stator laminations 12. The maximum distance between two adjacent stator laminations 12 is related to the precision of the machining equipment used for manufacturing the stator laminations 12.
In some embodiments, as shown in fig. 1, the stator lamination 12 is square, four sides of the stator lamination 12 are provided with a plurality of recesses 202 arranged at equal intervals, and the interval between the innermost points of two adjacent recesses 202 on any side of the stator lamination 12 is b 5. The innermost points of the plurality of recesses 202 of the stator punching sheet 12 can form a square (a dotted line frame in fig. 1), the distance between the vertex of the lower left corner of the square and the innermost point of the nearest upper first recess is x1, the distance between the vertex of the upper left corner of the square and the innermost point of the nearest right first recess is x2, the distance between the vertex of the upper right corner of the square and the innermost point of the nearest lower first recess is x3, and the distance between the vertex of the lower right corner of the square and the innermost point of the nearest left first recess is x 4; wherein, x1 is x 3; x2 ═ x 4; b5/2, | x1-x2 |; alternatively, x1 ═ x 2; x3 ═ x 4; b5/2, | x1-x3 |.
When x1 ═ x 3; x2 ═ x 4; when | x1-x2| ═ b5/2, the stator lamination 12 can be switched from the first position to the second position by rotating by 90 °. When x1 ═ x 2; x3 ═ x 4; when | x1-x3| ═ b5/2, the stator lamination 12 rotates 180 °, and can be switched from the first position to the second position.
In some embodiments, as shown in fig. 2, the stator lamination 12 is circular, the plurality of recesses 202 are arranged at equal intervals along the circumferential direction of the stator lamination 12, and the number N of the recesses 202 is even, but is not a multiple of 4. Thus, when the stator punching sheet 12 rotates by 90 °, the first position can be switched to the second position. For example, when the number N of the recesses 202 is 22, the stator lamination 12 rotates 90 ° corresponding to 5.5 recesses 202, and at this time, the stator lamination 12 may be switched from the first position to the second position. When the number N of the recesses 202 is 24, the stator punching sheet 12 is rotated by 90 ° corresponding to 6 recesses 202, and at this time, the stator punching sheet 12 can be switched from the first position to the first position. When the number N of the recesses 202 is 21, the stator punching sheet 12 is rotated by 90 ° which is equivalent to 21/4 recesses 202, and at this time, the stator punching sheet 12 is not in the first position nor in the second position.
In the embodiment shown in fig. 1 and 2, the stator lamination 12 can be switched from the first position to the second position by rotating 90 ° or 180 °, which is very convenient for automatically manufacturing the stator core 10 of the stator. It is understood that in other embodiments, the stator punching sheet 12 may also be switched from the first position to the second position by selecting an angle of 45 °, 60 °, 135 °, or the like.
The present invention also provides a stator, as shown in fig. 5 to 8, which includes a stator core 10. The stator core 10 includes a plurality of stator laminations 12, and the plurality of stator laminations 12 are stacked.
The stator core 10 includes an annular yoke 10a and a tooth portion 10b provided on an inner peripheral wall of the annular yoke 10 a. The plurality of tooth portions 10b are provided, and the plurality of tooth portions 10b are provided at intervals in the circumferential direction of the annular yoke portion 10 a. That is, the plurality of tooth portions 10b are all provided on the annular yoke portion 10a, and the plurality of tooth portions 10b are arranged at intervals and encircle the annular yoke portion 10 a. Specifically, in the present embodiment, the annular yokes 200 of the plurality of stator laminations 12 are stacked and form the annular yoke 10a of the stator core 10, that is, the annular yoke 10a includes a plurality of stacked annular yokes 200. The plurality of stator teeth 300 of the plurality of stator laminations 12 are stacked one on another and form a plurality of convex teeth 10b of the stator core 10, and each convex tooth 10b includes a plurality of stacked stator teeth 300.
The male tooth portion 10b includes a tooth section including a plurality of tooth bodies 310 arranged in a stacked manner and a tooth shoe section. The tooth shoe section includes a plurality of tooth shoes 320 arranged in a stack. In this embodiment, the stator further includes a coil. The coil is wound on the tooth section.
In some embodiments, as shown in fig. 5 and 6, a plurality of stator laminations 12 are stacked, and the concave portions 202 of any two stator laminations 12 are arranged opposite to each other. That is, when the plurality of stator laminations 12 are stacked, all the stator laminations 12 are stacked in a manner of the concave portion 202 to the concave portion 202. At this time, the stator laminations 12 may be all in the first position or all in the second position. In this manner, the stator core 10 can be made more convenient to fit with the housing of the motor.
In the embodiment shown in fig. 5 and 6, the outer peripheral wall of the stator core 10 forms a plurality of concave structures 10c, and the plurality of concave structures 10c are arranged along the circumferential direction of the stator core 10. The concave structure 10c includes a plurality of concave portions 202 that are sequentially connected in the stacking direction of the plurality of stator lamination sheets 12. A protruding structure 10d is defined between two adjacent concave structures 10c, and a plurality of protruding structures 10d are arranged along the circumferential direction of the stator core 10. The projection arrangement 10d comprises a plurality of projections 204 connected in series.
In some embodiments, as shown in fig. 7 and 8, a plurality of stator laminations 12 are stacked, and the recesses 202 of at least two stator laminations 12 are arranged in a staggered manner. That is, when the plurality of stator laminations 12 are stacked, at least two stator laminations 12 are stacked in a manner that the concave portion 202 is aligned with the convex portion 204. At this time, it can be considered that at least one stator lamination 12 is located at the first position, and at least one stator lamination 12 is located at the second position.
The concave portion 202 is formed on the outer peripheral wall of the stator punching sheet 12, and the concave portion 202 affects the rigidity of the stator punching sheet 12, so that the rigidity of the stator punching sheet 12 is reduced, and the rigidity of the stator punching sheet 12 is reduced, so that the rigidity of the stator core 10 is reduced. In order to solve the above problem, in the present embodiment, the recesses 202 provided with at least two stator laminations 12 are arranged in a staggered manner, so that the reduction in rigidity of the stator core 10 can be reduced.
In this embodiment, in the stacking direction of the plurality of stator punching sheets 12, the stator core 10 includes a first stator lamination 10e and a second stator lamination 10f that are stacked, and both the first stator lamination 10e and the second stator lamination 10f include a plurality of stator punching sheets 12. In the first stator lamination 10e, the concave portions 202 of any two stator lamination sheets 12 are arranged to face each other, in the second stator lamination 10f, the concave portions 202 of any two stator lamination sheets 12 are arranged to face each other, and the concave portions 202 of the stator lamination sheets 12 in the first stator lamination 10e and the concave portions 202 of the stator lamination sheets 12 in the second stator lamination 10f are arranged in a staggered manner. Therefore, the rigidity of the stator core 10 is improved, and the stator core 10 is convenient to produce and manufacture (assuming that the stator punching sheets 12 of the first stator lamination 10e are all located at the first position, in the process of forming the first stator lamination 10e, the position of the stator punching sheet 12 does not need to be changed, the stator punching sheets 12 of the second stator lamination 10f are all located at the second position, and in the process of forming the second stator lamination 10f, the position of the stator punching sheet 12 does not need to be changed).
Specifically, in the present embodiment, the first stator laminated block 10e and the second stator laminated block 10f are each plural and are stacked alternately. In this way, the rigidity of the stator core 10 can be further improved. More specifically, in the present embodiment, the first stator stack 10e and the second stator stack 10f are both two. It is understood that in other embodiments, the first stator stack 10e and the second stator stack 10f may be one, or three or more.
It should be noted that, in the embodiments shown in fig. 5 to 8, the structures of the plurality of stator laminations 12 are the same. As shown in fig. 5 and 6, when the plurality of stator laminations 12 are stacked in such a manner that the concave portion 202 is aligned with the concave portion 202, the plurality of stator laminations 12 of the stator core 10 may be assumed to be all in the first position. As shown in fig. 7 and 8, when the recesses 202 of at least two stator laminations 12 of the stator core 10 are arranged in a staggered manner, at this time, it can be considered that at least one stator lamination 12 is at the first position, and at least one stator lamination 12 is at the second position.
The present invention also provides a stator including a stator core 10.
The utility model further provides a motor, which includes the stator, and the specific structure of the stator refers to the above embodiments, and since the motor adopts all technical solutions of all the above embodiments, the motor at least has all the beneficial effects brought by the technical solutions of the above embodiments, and details are not repeated herein.
In the present embodiment, the motor is applied to a household appliance, which may be a refrigerator, a washing machine, an air conditioner fan, or the like. It is understood that in other embodiments, the motor may be applied to non-household appliances such as automobiles.
The above description is only an alternative embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (15)
1. A stator punching sheet is characterized by comprising:
a stator yoke; and
the stator tooth part comprises a tooth body and a plurality of tooth shoes, one end of the tooth body is arranged on the inner peripheral wall of the stator yoke part, the tooth shoes are arranged on the other end of the tooth body, and the plurality of stator tooth parts are arranged at intervals along the circumferential direction of the stator yoke part;
the outer circumferential wall of the stator yoke portion is provided with a concave-convex structure, the concave-convex structure comprises a plurality of concave portions and a plurality of convex portions, and the plurality of concave portions and the plurality of convex portions are arranged in a staggered mode in the circumferential direction of the stator yoke portion.
2. The stator lamination as recited in claim 1, wherein the recess has a depth b1 in a radial direction of the stator yoke, and a minimum width b2 of the stator yoke in the radial direction of the stator yoke, and 0.1< b1/b2< 0.4.
3. The stator lamination as recited in claim 2, wherein an opening width of the recess in a circumferential direction of the stator yoke is b3, 1< b3/b1< 5.
4. The stator lamination as recited in claim 2, wherein the smallest width of the tooth body in the circumferential direction of the stator yoke portion is b4, 0.4< b4/b2< 1.
5. The stator lamination as claimed in claim 1, wherein the stator yoke portion comprises a concave-convex section and a smooth section in a circumferential direction of the stator yoke portion, the concave-convex section has a plurality of concave portions, and a width of the smooth section is greater than a width of the concave-convex section in a radial direction of the stator yoke portion.
6. The stator lamination as recited in claim 5, wherein the smooth segments and the concave-convex segments are arranged in a staggered manner;
or the concave-convex section is annular.
7. The stator punching sheet according to claim 1, wherein the stator yoke is square, a plurality of recesses are arranged on four sides of the stator yoke at equal intervals, and the interval between the innermost points of two adjacent recesses on any side of the stator punching sheet is b 5;
the innermost points of the plurality of pockets of the stator yoke can form a square, the lower left corner vertex of the square is spaced x1 from the innermost point of the nearest upper first pocket, the upper left corner vertex of the square is spaced x2 from the innermost point of the nearest right first pocket, the upper right corner vertex of the square is spaced x3 from the innermost point of the nearest lower first pocket, and the lower right corner vertex of the square is spaced x4 from the innermost point of the nearest left first pocket;
wherein, x1 is x 3; x2 ═ x 4; b5/2, | x1-x2 |;
alternatively, x1 ═ x 2; x3 ═ x 4; b5/2, | x1-x3 |.
8. The stator lamination as recited in claim 1, wherein the stator yoke is circular, the plurality of recesses are arranged at equal intervals along the circumference of the stator yoke, and the number of the recesses is even but not a multiple of 4.
9. A stator core, characterized by comprising a plurality of stator laminations as claimed in any one of claims 1 to 8, which are stacked.
10. The stator core according to claim 9 wherein the recesses of any two of the stator laminations are disposed in facing relation.
11. The stator core according to claim 9, wherein the recesses of at least two of the stator laminations are offset.
12. The stator core according to claim 11, wherein in a stacking direction of the plurality of stator laminations, the stator core comprises a first stator lamination and a second stator lamination which are stacked, and the first stator lamination and the second stator lamination each comprise a plurality of stator laminations;
the concave parts of any two stator punching sheets in the first stator lamination block are arranged just opposite to each other, the concave parts of any two stator punching sheets in the second stator lamination block are arranged just opposite to each other, and the concave parts of the stator punching sheets in the first stator lamination block and the concave parts of the stator punching sheets in the second stator lamination block are arranged in a staggered mode.
13. The stator core according to claim 12, wherein the first stator lamination and the second stator lamination are each plural and alternately laminated.
14. A stator comprising a stator core according to any one of claims 9-13.
15. An electrical machine comprising a stator according to claim 14.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121507617.4U CN215378581U (en) | 2021-07-02 | 2021-07-02 | Stator punching sheet, stator core, stator and motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121507617.4U CN215378581U (en) | 2021-07-02 | 2021-07-02 | Stator punching sheet, stator core, stator and motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215378581U true CN215378581U (en) | 2021-12-31 |
Family
ID=79607086
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121507617.4U Active CN215378581U (en) | 2021-07-02 | 2021-07-02 | Stator punching sheet, stator core, stator and motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215378581U (en) |
-
2021
- 2021-07-02 CN CN202121507617.4U patent/CN215378581U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN213402600U (en) | Cooling structure of stator core and oil-cooled motor | |
| CN113872348B (en) | Stator structure, motor structure, compressor structure and refrigeration equipment | |
| CN215378581U (en) | Stator punching sheet, stator core, stator and motor | |
| WO2017092191A1 (en) | Stator punching, stator assembly and external rotor motor | |
| CN113410923A (en) | Stator punching sheet, stator core, stator and motor | |
| CN103915923A (en) | Freezer compressor and motor and stator punching piece of freezer compressor | |
| CN215934544U (en) | Stator punching sheet, stator with same, motor and air-conditioning fan | |
| CN206226138U (en) | Stator punching, motor and compressor | |
| CN215186124U (en) | Motor rotor punching sheet structure and motor | |
| CN214958929U (en) | Stator punching sheet, motor, compressor and household appliance | |
| CN210273628U (en) | Heat dissipation type stator punching | |
| CN209963931U (en) | External rotor motor | |
| CN219351370U (en) | Stator punching sheet, stator core, motor and compressor | |
| CN216530743U (en) | Stator, permanent magnet synchronous motor, compressor and household appliance | |
| CN112448491A (en) | Stator core, stator structure, motor, compressor and electric appliance with same | |
| CN220382819U (en) | Stator core, motor, compressor and refrigeration equipment | |
| CN217789417U (en) | Rotor structure and motor | |
| CN215071833U (en) | Stator punching sheet, motor and compressor | |
| CN218569948U (en) | Rotor structure | |
| CN214850688U (en) | Motor, compressor and refrigeration plant | |
| CN220874281U (en) | Stator punching sheet, stator and motor | |
| CN212258555U (en) | Stator punching sheet, stator with same, motor and compressor | |
| CN212012280U (en) | Stator punching sheet, stator with same, motor and compressor | |
| CN212258582U (en) | Rotor punching sheet, rotor core, rotor and motor | |
| CN112448507A (en) | Rotor core, rotor structure, motor, compressor and air conditioner with rotor core and rotor structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |