CN218829294U - Motor rotor punching sheet, iron core and motor - Google Patents
Motor rotor punching sheet, iron core and motor Download PDFInfo
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- CN218829294U CN218829294U CN202223125885.7U CN202223125885U CN218829294U CN 218829294 U CN218829294 U CN 218829294U CN 202223125885 U CN202223125885 U CN 202223125885U CN 218829294 U CN218829294 U CN 218829294U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
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Abstract
The utility model belongs to the mechanical industry field provides a motor rotor towards piece, iron core and motor, and a motor rotor towards piece includes: punching a sheet main body; the punching sheet main body is provided with a plurality of rotor magnetic poles which are formed by extending from the punching sheet main body along the radial direction and are distributed along the circumferential direction of the punching sheet main body; a magnet slot is arranged between adjacent rotor magnetic poles; the two sides of the magnet groove close to and far away from the punching sheet main body are respectively provided with an inner pole shoe and an outer pole shoe; one side of the magnet groove close to the main body also extends to form a hollow groove; and a magnetic isolation bridge is formed between the adjacent empty grooves. The utility model provides a motor rotor punching, iron core and motor adopts single kind of rotor punching can realize the spacing to the permanent magnet to prevent that the motor during operation, the permanent magnet from taking place the aversion, has reduced spare part simultaneously and has richly mixed, has simplified assembly process, has reduced the cost of manufacturing; the design of the punching sheet structure is optimized, the width of a magnetic isolation bridge is reduced, the magnetic leakage is less, the efficiency is high, and the performance of the motor is improved.
Description
Technical Field
The utility model belongs to the mechanical industry field especially relates to an electric motor rotor is towards piece, iron core and motor.
Background
Electric motors are widely used in the mechanical industry as a device for converting electric energy into kinetic energy and outputting the kinetic energy.
The motor generally comprises a stator part and a rotor part, wherein the rotor part comprises a plurality of rotor punching sheets which are arranged in an overlapping mode, and each rotor punching sheet is correspondingly provided with a limiting structure for installing a permanent magnet magnetic pole.
When the rotor works, the permanent magnet can rotate along with the rotor, in order to avoid the permanent magnet from being separated from the rotor, in the existing motor, the two ends of the rotor are required to be correspondingly provided with the limiting structures, so that the permanent magnet is fixed in two directions, therefore, the punching sheets with two different structures are adopted, one structure is only provided with the limiting structure at one end, the other two ends are provided with the limiting structures, and the punching sheets with one ends provided with the limiting structures are uniformly inserted into the punching sheets with one ends provided with the limiting structures at equal intervals in a plurality of overlapping arrangement modes to realize the installation and fixation of the permanent magnet.
The rotor or the motor adopting the coincident punching sheet has the problems of redundant parts, complex assembly process and high cost; in addition, receive the restriction of structure, current rotor punching still has to separate the magnetic bridge width big, and the magnetic leakage is big, the problem of inefficiency.
SUMMERY OF THE UTILITY MODEL
The utility model provides an electric motor rotor is towards piece, iron core and motor aims at solving the redundant miscellaneous of current electric motor rotor spare part, and assembly process is complicated, and is with high costs to and the rotor is towards piece magnetism isolation bridge width big, and the magnetic leakage is big, problem of inefficiency.
In a first aspect, the present invention provides a rotor sheet of an electric motor, including: punching a sheet main body; and
the punching sheet main body is radially extended to form a plurality of rotor magnetic poles distributed along the circumferential direction of the punching sheet main body;
a magnet slot is arranged between adjacent rotor magnetic poles;
the two sides of the magnet groove close to and far away from the punching sheet main body are respectively provided with an inner pole shoe and an outer pole shoe; one side of the magnet groove close to the main body also extends to form a hollow groove;
and a magnetic isolation bridge is formed between the adjacent empty grooves.
Optionally, the bridge deck width of the magnetic isolation bridge is greater than or equal to 0.3 mm.
Optionally, one side of the magnet slot, which is close to the punching sheet main body, is provided with two inner pole shoes, a gap is arranged between the two inner pole shoes in the same magnet slot, and the magnet slot is communicated with the empty slot through the gap.
Optionally, the width of the gap is greater than or equal to 2 mm.
Optionally, the rotor pole extends 0.5 mm towards the magnet slot forming the inner pole piece.
Optionally, the punching sheet main body is provided with an air guide groove.
Optionally, the width of the air guiding groove is greater than 3 mm.
The second aspect, the utility model provides a rotor core, including a plurality of foretell electric motor rotor towards the piece.
Optionally, a plurality of motor rotor punching sheets are stacked and assembled along the axial direction of the punching sheet main body, the punching sheet main body inner holes of the motor rotor punching sheets are mutually communicated to form a rotor through hole, and the magnet grooves of the motor rotor punching sheets are mutually communicated to form a permanent magnet placing groove for placing a permanent magnet.
In a third aspect, the present invention provides a motor, including the above-mentioned rotor core.
The utility model provides a motor rotor punching sheet, iron core and motor, the both sides that are close to and keep away from the punching sheet main part of the magnet groove of each rotor punching sheet are equallyd divide and are provided with interior pole shoe and outer pole shoe respectively, and the permanent magnet is spacing by interior pole shoe and outer pole shoe when installing in the magnet groove, in the production assembling process, only need adopt single kind rotor punching sheet can realize spacing to the permanent magnet, in order to prevent that the motor during operation, the permanent magnet takes place to shift, has reduced spare part simultaneously, has simplified assembly process, has reduced the cost of manufacturing; the design of the punching sheet structure is optimized, the width of the magnetic isolation bridge is reduced, the magnetic leakage is extremely low, the efficiency is high, and the performance of the motor is improved.
Drawings
Fig. 1 is a schematic structural diagram of a rotor sheet provided by the present invention;
fig. 2 is a schematic structural diagram of another rotor sheet provided by the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that all the directional indicators (such as upper, lower, left, right, front, and rear … …) in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
In the present application, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., "fixed" may be fixedly connected or detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be interconnected within two elements or in a relationship where two elements interact with each other unless otherwise specifically limited. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
The utility model provides a motor rotor punching sheet, iron core and motor, the both sides that are close to and keep away from the punching sheet main part of the magnet groove of each rotor punching sheet are equallyd divide and are provided with interior pole shoe and outer pole shoe respectively, and the permanent magnet is spacing by interior pole shoe and outer pole shoe when installing in the magnet groove, so adopt single kind rotor punching sheet can realize spacing to the permanent magnet, thereby prevent that the motor from working, the permanent magnet takes place to shift, has reduced spare part simultaneously, has simplified assembly process, has reduced the cost of manufacturing; the design of the punching sheet structure is optimized, the width of the magnetic isolation bridge is reduced, the magnetic leakage is extremely low, the efficiency is high, and the performance of the motor is improved.
Example one
Referring to fig. 1-2, the present embodiment provides a motor rotor punching sheet, including: a punch main body 100; and
a plurality of rotor magnetic poles 110 formed by extending from the punching sheet main body 100 along the radial direction and distributed along the circumferential direction of the punching sheet main body 100;
a magnet slot 200 is arranged between adjacent rotor poles 110;
the inner pole shoe 210 and the outer pole shoe 220 are respectively arranged on the two sides of the magnet slot 200 close to and far away from the punching sheet main body 100;
one side of the magnet groove 200 close to the punching sheet main body 100 also extends to form an empty groove 230;
In this embodiment, the rotor sheet is used to form a rotor portion of the motor, and during assembly, a plurality of identical rotor sheets are stacked in the axial direction of the sheet main body 100, so as to form a permanent magnet placement groove with a certain volume. The following description is given taking an individual rotor sheet as an example.
The punching sheet main body 100 is approximately in a disc shape, a shaft hole matched with the rotating shaft is formed in the center of the punching sheet main body, the size of the shaft hole can be set according to actual use requirements, and limitation is not made here. The number of the rotor poles 110 can be set according to actual use requirements, and the rotor poles 110 can be regarded as being formed along the circumference by extending the center of the disc-shaped punching sheet main body 100 along the radius direction in a divergent manner and distributed in a surrounding manner.
Both sides of each rotor magnetic pole 110 are recessed inward by a certain distance, so that a receiving groove is formed between two adjacent rotor magnetic poles 110, the receiving groove can be regarded as a magnet groove 200, and the magnet groove 200 can be used for mounting the permanent magnet 500, therefore, according to the size or shape of the permanent magnet 500, the size or shape of the magnet groove 200 can be changed correspondingly, thereby adapting to the mounting requirements of the permanent magnet 500.
The magnet slot 200 is provided with an inner pole piece 210 on the inside and an outer pole piece on the outside
The side is provided with an outer pole shoe 220, wherein, for example, the inner pole shoe 210 and the outer pole shoe 220 can be regarded as being respectively arranged at two ends of the magnet slot 200 along the radial direction of the disc-shaped punching sheet main body 100. Since the permanent magnet 500 has a regular rectangular shape in appearance, the magnet slot 200 is generally defined at the installation position by fixing four corners of the permanent magnet 500 with the inner pole piece 210 and the outer pole piece 220, and the inner pole piece 210 and the outer pole piece 220 can be configured to be adapted to the shape of the corners of the permanent magnet 500, in this embodiment, the inner pole piece 210 and the outer pole piece 220 can be regarded as being formed by extending the magnet slot 200 for a certain distance in a direction perpendicular to the side surface of the rotor magnetic pole 110, and referring to fig. 1, the inner pole piece 210 and the outer pole piece 220 are both formed at an approximately right angle inside the magnet slot 200, thereby matching the corners of the permanent magnet 500. Wherein, this right angle department uses the circular arc transition for the atress is more balanced, avoids appearing stress concentration's position, leads to the fracture inefficacy, thereby prolongs the life of rotor punching.
In the present embodiment, the term "inside" refers to a side of the magnet slot 200 close to the punching sheet main body 100; the term "outer side" refers to the side of the magnet slot 200 away from the punch body 100.
Referring to fig. 2, in some embodiments, the outer pole piece 220 mainly serves to limit the permanent magnet 500 from being separated in a direction away from the center of the disc-shaped punching sheet main body 100 along the radial direction, and therefore, in this case, the inner pole piece 210 may not be disposed inside the magnet slot 200, and a support structure is used to abut against and contact one end of the permanent magnet 500 close to the center of the disc-shaped punching sheet, so that the permanent magnet 500 is not displaced towards the center of the disc-shaped punching sheet. Based on the principle as described above, the supporting structure can be formed by extending the disc-shaped punching sheet main body 100 along the radial direction of the disc-shaped punching sheet main body 100 towards the direction away from the center of a circle for a certain distance, the supporting structure can be rectangular, and in order to play a better supporting role, the supporting structure has a certain width in the radial vertical direction of the disc-shaped punching sheet main body 100.
The size of the empty slot 230 formed by extending the magnet slot 200 towards one side of the punching sheet main body 100 can be set according to actual application requirements, and the lower end edge of the empty slot can be set to have a certain radian, so that the stress condition of the rotor punching sheet is further balanced. The magnetic isolation bridge 300 is formed between the adjacent empty slots 230, and it can be understood that the bridge deck width of the magnetic isolation bridge 300 can be realized by adjusting the width of the empty slot 230, that is, when the magnetic isolation bridge 300 with a narrower bridge deck is required, the width of the empty slot 230 only needs to be expanded. Adopt the utility model discloses a design can further reduce the bridge floor width that separates magnetic bridge 300 for bridge floor position magnetic flow is more saturated, and the restriction magnetic leakage effect is better.
The utility model provides a motor rotor punching sheet adopts single kind of rotor punching sheet can realize the spacing to permanent magnet 500 to prevent that when the motor works, permanent magnet 500 from shifting, reduces spare parts simultaneously, simplifies the assembly process, reduces the cost of manufacturing; the design of punching sheet structure has been optimized, has reduced and has separated magnetic bridge 300 width for the magnetic leakage is minimum, and is efficient, thereby has promoted the performance of motor.
Example two
Referring to fig. 1-2, the magnetic isolation bridge 300 of the present embodiment has a bridge deck width of 0.3 mm or more.
It is easy to understand that the motor rotor is formed by overlapping a plurality of rotor sheets, and the rotor needs to be a whole with enough mechanical strength besides the function of limiting the magnetic leakage of the permanent magnet 500 through the saturation of the magnetic leakage at the bridge deck part, so as to realize long-term and effective work. Therefore, although the smaller the width of the magnetic isolation bridge 300, the more saturated the magnetic flux at the bridge deck part, and the better the magnetic leakage limiting effect is; the bridge deck width of the magnetic isolation bridge 300 cannot be too small, otherwise, the mechanical strength of the rotor punching sheet is insufficient, the risk of fracture failure is increased, and the service life is shortened.
The inventor discovers that in research and development, when the bridge deck width of the rotor punching sheet with the structure of the utility model is approximately 0.3 mm, the magnetic flux saturation degree of the bridge deck part is better, and then the better effect of limiting magnetic flux leakage can be obtained. Based on the reasons mentioned above, when the width of the bridge deck of the magnetic isolation bridge 300 is less than 0.3 mm, the mechanical strength of the rotor sheet is insufficient, and if the motor adopts the sheet, stable and effective operation cannot be guaranteed. Therefore, it is preferable to set the bridge deck width of the magnetic bridge 300 to 0.3 mm or more.
EXAMPLE III
Referring to fig. 1-2, two inner pole shoes 210 are disposed on one side of the magnet slot 200 of the present embodiment, which is close to the punching sheet main body 100, a gap is disposed between the two inner pole shoes 210 in the same magnet slot 200, and the magnet slot 200 is communicated with the empty slot 230 through the gap.
In this embodiment, in order to avoid magnetic leakage, the inner pole shoes 210 of the magnet slots 200 close to the punching sheet main body 100 cannot contact each other, so that a gap is provided between two adjacent inner pole shoes 210 in the same magnet slot 200, and the gap can be directly communicated with the empty slot 230, so that the magnetic induction lines can be uniformly arranged without intersecting each other, and a complete loop is formed, so that mutual interference is avoided, and a stable magnetic field is formed.
Example four
Referring to fig. 1-2, the gap of the present embodiment has a width of 2 mm or more.
The inventor discovers in research and development that the rotor punching sheet adopting the structure of the utility model can not realize the technical effect of avoiding magnetic leakage only by setting the inner pole shoe 210 at the inner side of the magnet slot 200 to be in a non-contact state, that is, the gap between the inner pole shoes 210 adjacent to each other needs to have a certain width, so as to realize the basic function of avoiding magnetic leakage. Further, the inventor has found through experiments that when the gap between two adjacent inner pole pieces 210 is approximately 2 mm, the effect of stabilizing the magnetic field and avoiding magnetic leakage can be achieved, and therefore, in this embodiment, it is preferable to set the gap between two adjacent inner pole pieces 210 to be greater than or equal to 2 mm.
EXAMPLE five
Referring to fig. 1-2, the rotor pole 110 of the present embodiment extends 0.5 mm toward the magnet slot 200 to form an inner pole piece 210.
In this embodiment, the inner pole shoe 210 may be formed by extending the inner side of the magnet slot 200 for a certain distance, and the extending direction is substantially parallel to the direction perpendicular to the radius of the disc-shaped punching sheet main body 100, and according to the actual use requirement, a certain angle may also be formed with the direction, so that the inner pole shoe 210 can provide sufficient supporting force in the radial direction, and the permanent magnet 500 does not displace toward the center of the circle.
The inventor discovers in research and development that the rotor punching sheet with the structure of the utility model discloses rotor magnetic pole 110 extends 0.5 millimeter to magnet slot 200 and forms interior pole shoe 210, can realize that the magnetic leakage is few when guaranteeing the firm installation of permanent magnet 500, and efficient effect, consequently, rotor magnetic pole 110 extends 0.5 millimeter to magnet slot 200 and forms interior pole shoe 210 is better scheme.
EXAMPLE six
Referring to fig. 1-2, the punching sheet main body 100 of the present embodiment is provided with a wind guide groove 400.
In this embodiment, as mentioned above, the wind guide grooves 400 are disposed around the shaft hole on the disc-shaped punching sheet main body 100, and similarly, the wind guide grooves 400 may be regarded as being formed around the circle center of the disc-shaped punching sheet main body 100 by extending along the radial direction in a divergent manner and distributed in a surrounding manner. The motor during operation because electromagnetic effect's effect can produce a large amount of heats, consequently, needs dispel the heat to the motor, adopts the utility model discloses the motor of structure rotor punching can form the center that the air current got into electric motor rotor through wind-guiding groove 400 guide air, continuously takes the heat out, thereby realizes the heat dissipation.
The utility model provides an electric motor rotor is towards piece utilizes wind-guiding groove 400 to realize the motor heat dissipation, simple structure, and the radiating effect is good, need not to add dedicated heat abstractor, practices thrift the cost, does benefit to manufacturing.
EXAMPLE seven
Referring to fig. 1-2, the width of air-guiding channel 400 of the present embodiment is greater than 3 mm.
Example eight
Referring to fig. 1-2, the present embodiment provides a rotor core, which includes a plurality of motor rotor sheets described above.
Further, a plurality of motor rotor punching sheets are stacked and assembled along the axial direction of the punching sheet main body 100, inner holes of the punching sheet main body 100 of the plurality of motor rotor punching sheets are mutually communicated to form a rotor through hole, and magnet grooves 200 of the plurality of motor rotor punching sheets are mutually communicated to form a permanent magnet placing groove for placing a permanent magnet 500.
Rotor core is formed by the range upon range of equipment of a plurality of punching sheet along punching sheet main part 100 axial, because this embodiment adopts the same rotor punching sheet, consequently, only needs to stack up a plurality of rotor punching sheets in proper order and arranges, can accomplish rotor core's installation.
The two sides of each rotor magnetic pole 110 are recessed inward for a certain distance, so that an empty slot 230 is formed between two adjacent rotor magnetic poles 110, the empty slot 230 can be regarded as a magnet slot 200, the magnet slots 200 of the motor rotor sheets are communicated with each other to form a permanent magnet placing slot for placing the permanent magnet 500, and the permanent magnet placing slot can be used for installing the permanent magnet 500, so that the size or the shape of the permanent magnet placing slot can be correspondingly changed according to the size or the shape of the permanent magnet 500, thereby adapting to the installation requirement of the permanent magnet 500.
An inner pole shoe 210 formed by stacking is arranged on the inner side of the permanent magnet placing groove, and an outer pole shoe 220 formed by stacking is arranged on the outer side of the permanent magnet placing groove, wherein, for example, the inner pole shoe 210 and the outer pole shoe 220 can be regarded as being respectively arranged at two ends of the permanent magnet placing groove along the radius direction of the disc-shaped punching sheet main body 100. Since the permanent magnet 500 has a regular rectangular shape, the permanent magnet placement groove is generally defined at the four corners of the permanent magnet 500 by the inner pole piece 210 and the outer pole piece 220, and the inner pole piece 210 and the outer pole piece 220 can be configured to adapt to the corners of the permanent magnet 500, in this embodiment, the inner pole piece 210 and the outer pole piece 220 can be regarded as being formed by extending the permanent magnet placement groove for a certain distance in a direction perpendicular to the side surface of the rotor magnetic pole 110, and the inner pole piece 210 and the outer pole piece 220 are both formed at an approximate right angle inside the permanent magnet placement groove, thereby matching with the corners of the permanent magnet 500. Wherein, this right angle department uses the circular arc transition for the atress is more balanced, avoids appearing stress concentration's position, leads to the fracture inefficacy, thereby prolongs the life of rotor punching.
In some embodiments, the outer pole shoe 220 mainly plays a role in limiting the permanent magnet 500 to separate from the disc-shaped punching sheet main body 100 in a direction away from the center of the circle along the radial direction, and therefore, in this case, the inner pole shoe 210 may not be disposed inside the permanent magnet placing groove, and a supporting structure is used to abut against and contact one end of the permanent magnet 500 close to the center of the disc-shaped punching sheet, so that the permanent magnet is not displaced in the direction of the center of the circle. Based on the principle as described above, the supporting structure can be formed by extending the disc-shaped punching sheet main body 100 along the radial direction of the disc-shaped punching sheet main body 100 to the direction away from the circle center for a certain distance, the supporting structure can be rectangular, and in order to play a better supporting role, the supporting structure has a certain width in the radial vertical direction of the disc-shaped punching sheet main body 100.
The utility model provides a rotor core adopts single kind of rotor punching sheet can realize the spacing to permanent magnet 500, by means of preventing that motor during operation, permanent magnet 500 takes place the aversion, has reduced spare part simultaneously, has simplified assembly process, has reduced the cost of manufacturing; the design of punching sheet structure has been optimized, has reduced magnetic isolation bridge 300 width for the magnetic leakage is minimum, and is efficient, thereby has promoted the performance of motor.
Example nine
Referring to fig. 1-2, the present embodiment provides a motor including a rotor core as described above.
The utility model provides a motor adopts single kind of rotor punching can realize spacing to permanent magnet 500, with the help of preventing that motor during operation, permanent magnet 500 takes place the aversion, has reduced spare part simultaneously and has lacked miscellaneous, has simplified assembly process, has reduced the cost of manufacturing; the design of punching sheet structure has been optimized, has reduced magnetic isolation bridge 300 width for the magnetic leakage is minimum, and is efficient, thereby has promoted the performance of motor.
The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The utility model provides a motor rotor punching which characterized in that includes:
punching a sheet main body; and
the punching sheet main body is radially extended to form a plurality of rotor magnetic poles distributed along the circumferential direction of the punching sheet main body;
a magnet slot is arranged between adjacent rotor magnetic poles;
the two sides of the magnet groove close to and far away from the punching sheet main body are respectively provided with an inner pole shoe and an outer pole shoe;
one side of the magnet groove close to the main body also extends to form a hollow groove;
and a magnetic isolation bridge is formed between the adjacent empty grooves.
2. The motor rotor punching sheet according to claim 1, wherein the bridge deck width of the magnetic isolation bridge is greater than or equal to 0.3 mm.
3. The motor rotor punching sheet according to claim 1, wherein one side of the magnet groove close to the punching sheet main body is provided with two inner pole shoes, a gap is arranged between the two inner pole shoes in the same magnet groove, and the magnet groove is communicated with the empty groove through the gap.
4. The electric machine rotor lamination of claim 3, wherein the gap has a width of 2 mm or more.
5. The electric machine rotor lamination of claim 1, wherein the rotor pole extends 0.5 millimeters toward the magnet slot forming the inner pole shoe.
6. The motor rotor punching sheet according to claim 1, wherein the punching sheet main body is provided with an air guide groove.
7. The motor rotor sheet of claim 6, wherein the width of the air guide slot is greater than 3 mm.
8. A rotor core, characterized by comprising a plurality of motor rotor sheets as claimed in any one of claims 1 to 7.
9. The rotor core according to claim 8, wherein a plurality of the motor rotor punching sheets are assembled in a stacked manner along the axial direction of the punching sheet main body, inner holes of the punching sheet main bodies of the motor rotor punching sheets are mutually communicated to form a rotor through hole, and magnet grooves of the motor rotor punching sheets are mutually communicated to form a permanent magnet placing groove for placing a permanent magnet.
10. An electrical machine comprising a rotor core according to claim 8 or 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223125885.7U CN218829294U (en) | 2022-11-17 | 2022-11-17 | Motor rotor punching sheet, iron core and motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223125885.7U CN218829294U (en) | 2022-11-17 | 2022-11-17 | Motor rotor punching sheet, iron core and motor |
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| Publication Number | Publication Date |
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| CN218829294U true CN218829294U (en) | 2023-04-07 |
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| CN202223125885.7U Active CN218829294U (en) | 2022-11-17 | 2022-11-17 | Motor rotor punching sheet, iron core and motor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116317250A (en) * | 2023-04-25 | 2023-06-23 | 广东高畅智能液压科技有限公司 | Rotor punching sheet for high-performance permanent magnet synchronous motor |
| CN116345756A (en) * | 2023-05-30 | 2023-06-27 | 河北新四达电机股份有限公司 | Motor cooling system and motor |
-
2022
- 2022-11-17 CN CN202223125885.7U patent/CN218829294U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116317250A (en) * | 2023-04-25 | 2023-06-23 | 广东高畅智能液压科技有限公司 | Rotor punching sheet for high-performance permanent magnet synchronous motor |
| CN116345756A (en) * | 2023-05-30 | 2023-06-27 | 河北新四达电机股份有限公司 | Motor cooling system and motor |
| CN116345756B (en) * | 2023-05-30 | 2023-08-15 | 河北新四达电机股份有限公司 | Motor cooling system and motor |
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