CN210693596U - Rotor ferromagnetic punching sheet, rotor assembly and liquid cooling pump - Google Patents
Rotor ferromagnetic punching sheet, rotor assembly and liquid cooling pump Download PDFInfo
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- CN210693596U CN210693596U CN201921871274.2U CN201921871274U CN210693596U CN 210693596 U CN210693596 U CN 210693596U CN 201921871274 U CN201921871274 U CN 201921871274U CN 210693596 U CN210693596 U CN 210693596U
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Abstract
The utility model relates to an electronic pump technical field provides rotor ferromagnetic sheet, rotor subassembly and liquid-cooled pump. In the rotor ferromagnetic stamped sheet, a plurality of magnetic steel grooves which are arranged at intervals and used for placing magnetic steel are arranged on the surface of the rotor ferromagnetic stamped sheet, wherein the length of each magnetic steel groove is greater than the width of each magnetic steel groove along the radial direction passing through the center of the rotor ferromagnetic stamped sheet. Because the tangential magnetic pole structure with the magnetic gathering function is adopted, the outer diameter of the rotor can be reduced on the premise of keeping the same magnetic field intensity of the rotor, the outer diameter of the stator can be correspondingly reduced, and the material consumption, the volume, the weight and the cost of the motor can be further reduced; in addition, the magnetic poles of the magnetic steel are tangentially arranged, so that the magnetic steel is prevented from acting on the armature magnetic field, and the demagnetization resistance of the magnetic steel can be improved to a certain extent.
Description
Technical Field
The utility model relates to an electronic pump technical field especially relates to rotor ferromagnetic lamination, rotor subassembly and liquid-cooled pump.
Background
In recent years, a canned motor for a canned motor pump is widely applied to the fields of household, industry and automobiles due to the characteristics of full sealing and no leakage, and the motor for the canned motor pump in the market at present still takes an asynchronous motor as the leading factor, and the asynchronous motor generates a rotor magnetic field due to the fact that a rotor needs to consume energy, and a rotor permanent magnet of a permanent magnet motor does not need to consume energy to maintain the rotor magnetic field, so that the permanent magnet motor has the characteristics of high efficiency and energy saving.
However, most of the magnetic pole structures of the permanent magnet rotor for the existing shield pump are a magnetic ring, a surface-mounted magnetic shoe and a linear magnetic pole structure, so that the magnetic steel is over against the armature magnetic field, and the demagnetization risk of the magnetic steel under the action of the armature magnetic field is increased. In addition, in the existing magnetic pole structure technology, the magnetic pole structure has the problems of poor air gap magnetic field sine degree and large magnetic leakage. In addition, in the existing method for manufacturing the rotor of the canned motor pump, a process of pressing and connecting the rotor core and the rotor shaft is needed before the rotor is molded, and most of the rotor injection molding materials are connected with the rotor core and the upper end ring and the lower end ring of the rotor in a smooth structure, so that the manufacturing process of the rotor is complicated, and the structural strength of the rotor cannot meet the requirement of high speed in the rotor.
SUMMERY OF THE UTILITY MODEL
To the defect that exists among the prior art, the utility model aims to provide a rotor ferromagnetic lamination, rotor subassembly and liquid-cooled pump to at least, realize improving the performance and the reduction in production cost of rotor subassembly.
According to the utility model discloses the embodiment of the first aspect provides a rotor ferromagnetic punching sheet, the surface of rotor ferromagnetic punching sheet is equipped with the magnet steel groove that is used for placing the magnet steel that a plurality of intervals were arranged, wherein, follows the process the radial direction at rotor ferromagnetic punching sheet's center, the length in magnet steel groove is greater than the width in magnet steel groove.
According to the utility model discloses an embodiment, all the magnet steel groove surrounds rotor ferromagnetic stamped piece's center is arranged with equidistant ground circumference each other.
According to the utility model discloses an embodiment, every the magnet steel groove includes magnet steel groove bottom and is located the magnet steel groove bottom with magnet steel groove top between the outward flange of rotor ferromagnetic stampings, wherein, magnet steel groove bottom forms the orientation the opening at rotor ferromagnetic stampings's center, and magnet steel groove top constructs the closed shape of continuous extension.
According to the utility model discloses an embodiment the opening part of magnet steel tank bottom, magnet steel tank bottom is formed with the magnet steel reference column, wherein, every the magnet steel tank the interval between the magnet steel reference column is less than the width in magnet steel tank.
According to the utility model discloses an embodiment, it is adjacent between the magnet steel groove the part of rotor ferromagnetic punching forms iron core tooth portion, wherein, every the tip of iron core tooth portion is formed with the orientation the tooth bottom groove at the center of rotor ferromagnetic punching.
According to the utility model discloses an embodiment, every still be formed with from dotting and tooth circular slot on the surface of iron core tooth portion.
According to an embodiment of the second aspect of the present invention, there is provided a rotor assembly, including: the rotor comprises a rotor core formed by stacking the rotor ferromagnetic stamped sheets and magnetic steel arranged in the magnetic steel slot.
According to the utility model discloses an embodiment, the rotor subassembly still includes: the rotor shielding sleeve is sleeved outside the rotor iron core; a rotor shaft extending through the center of the rotor core; the rotor upper end ring and the rotor lower end ring are arranged at two ends of the rotor iron core; and the rotor injection molding material is filled in gaps among the rotor upper end ring, the rotor lower end ring, the rotor iron core, the magnetic steel, the rotor shielding sleeve and the rotor shaft.
According to an embodiment of the third aspect of the present invention, there is provided a liquid-cooled pump comprising a rotor assembly as described above.
The beneficial effects of the utility model reside in that:
the utility model provides an among rotor ferromagnetic lamination, rotor subassembly and the liquid-cooled pump, the magnet steel groove in the rotor ferromagnetic lamination of adoption constructs: the length of the magnetic steel slot is larger than the width of the magnetic steel slot along the radial direction passing through the center of the rotor ferromagnetic stamped sheet. Through the arrangement mode, the magnetic steel is arranged in the magnetic steel groove along the radial direction, and then the magnetic poles of the magnetic steel are arranged along the tangential direction. Because the tangential magnetic pole structure with the magnetic gathering function is adopted, the outer diameter of the rotor can be reduced on the premise of keeping the same magnetic field intensity of the rotor, the outer diameter of the stator can be correspondingly reduced, and the material consumption, the volume, the weight and the cost of the motor can be further reduced; in addition, the magnetic poles of the magnetic steel are tangentially arranged, so that the magnetic steel is prevented from acting on the armature magnetic field, and the demagnetization resistance of the magnetic steel can be improved to a certain extent.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a top view of a rotor ferromagnetic lamination according to an embodiment of the present invention;
fig. 2 is an exploded perspective view of a rotor assembly according to an embodiment of the present invention;
FIG. 3 is an assembly view of the embodiment of FIG. 2;
FIG. 4 is a view of the rotor upper end ring of the embodiment shown in FIG. 2.
Reference numerals:
1. a rotor shaft; 21. an upper end ring of the rotor; 211. an end ring groove; 212. end ring teeth; 22. a rotor lower end ring; 3. rotor injection molding material; 4. magnetic steel; 5. a rotor shield sleeve; 6. a rotor core; 60. punching a rotor iron core; 61. the top of the magnetic steel groove; 62. the bottom of the magnetic steel slot; 63. self-buckling points; 64. a magnetic steel positioning column; 65. a tooth bottom groove; 66. a magnetic steel groove; 67. an iron core tooth part; 68. a tooth round slot; y1, center line of tooth part; y2, dividing the magnetic steel slot; y3, the outer circle of the rotor core; A. a center.
Detailed Description
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected" and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the embodiments of the present invention can be understood in specific cases by those skilled in the art.
In embodiments of the invention, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean 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 an embodiment of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to 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. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Referring now to fig. 1 to 4, the present invention will be described in detail. As shown in fig. 1 to 4, the present invention provides a rotor ferromagnetic stamped sheet 60. Specifically, the surface of the rotor ferromagnetic stamped piece 60 is provided with a plurality of magnetic steel grooves 66 which are arranged at intervals and used for placing the magnetic steel 4, wherein the length of the magnetic steel groove 66 is greater than the width of the magnetic steel groove 66 along the radial direction passing through the center a of the rotor ferromagnetic stamped piece 60. In an alternative embodiment, all of the magnetic steel slots 66 may be circumferentially spaced from one another equally about the center a of the rotor ferromagnetic laminations 60.
As can be seen from the above description, by setting the length of the magnetic steel slot 66 to be greater than the width of the magnetic steel slot 66 in the radial direction passing through the center a of the rotor ferromagnetic stamped piece 60, the magnetic steel 4 is placed in the radial direction of the rotor ferromagnetic stamped piece 60 when installed. Through the arrangement mode, the magnetic steel 4 is arranged in the magnetic steel groove 66 along the radial direction, and then the magnetic poles of the magnetic steel 4 are arranged along the tangential direction. Because the tangential magnetic pole structure with the magnetic gathering function is adopted, the outer diameter of the rotor can be reduced on the premise of keeping the same magnetic field intensity of the rotor, the outer diameter of the stator can be correspondingly reduced, and the material consumption, the volume, the weight and the cost of the motor can be further reduced; in addition, the magnetic poles of the magnetic steel are tangentially arranged, so that the magnetic steel is prevented from acting on the armature magnetic field, and the demagnetization resistance of the magnetic steel can be improved to a certain extent.
As further shown, in one embodiment of the present invention, each magnet steel slot 66 includes a magnet steel slot bottom 62, and a magnet steel slot top 61 located between the magnet steel slot bottom 62 and the outer edge of the rotor ferromagnetic lamination 60. Specifically, the magnetic steel slot bottom 62 forms an opening towards the center a of the rotor ferromagnetic lamination 60, and the magnetic steel slot top 61 is configured into a continuously extending closed shape.
According to the above embodiment, in the tangential magnetic pole structure, the utility model discloses a magnetic steel groove top 61 is closed and magnetic steel groove bottom 62 open-ended structure. The groove top closed opening effectively solves the problem of poor sine degree of an air gap magnetic field of a tangential magnetic pole structure, the outer circle of the rotor is enabled to keep a full-circle structure, the rotor core is enabled to be combined with the rotor shielding sleeve more firmly, and the problem that the rotor shielding sleeve is easy to deform due to the concave-convex structure of the outer circle of the rotor is avoided. In addition, the closed slot enables the armature magnetic field to form a shunting effect in the rotor, and the demagnetization resistance of the rotor magnetic steel is improved. On the other hand, the slot bottom opening effectively alleviates the high magnetic leakage problem of tangential magnetic pole structure, has cut off the magnetic circuit structure between two adjacent iron core tooth portions to improve the magnetic field utilization ratio, and then make rotor core thickness attenuation, make the whole thickness of rotor can reduce 18%, can make stator thickness reduce simultaneously, and then reduce motor material quantity, volume, weight and cost.
Further, in one embodiment, the magnetic steel slot bottom 62 may be formed with a magnetic steel positioning post 64 at the opening of the magnetic steel slot bottom 62. Specifically, the spacing between the magnetic steel positioning pillars 64 of each magnetic steel slot 66 is smaller than the width of the magnetic steel slot 66.
Additionally, in one embodiment, the portions of the rotor ferromagnetic laminations 60 between adjacent magnet slots 66 form core teeth 67. And wherein the end of each core tooth 67 is formed with a tooth bottom groove 65 toward the center of the rotor ferromagnetic stampings 60. Further, in one embodiment, a self-clinching point 63 and a tooth circular groove 68 are formed on the surface of each core tooth 67.
In the actual manufacturing process, the function of the self-fastening point 63 is to enable a plurality of rotor ferromagnetic stamped sheets 60 to be stacked and connected with each other, so as to form a rotor core; in addition, in the actual manufacturing process, the rotor injection molding material is injected into the rotor ferromagnetic stamped sheet 60, and at the moment, the rotor injection molding material enters the tooth bottom groove 65 and the tooth circular groove 68, so that the rotor ferromagnetic stamped sheet 60 can be connected with other parts more tightly. Specifically, the rotor assembly longitudinal connection can be strengthened after the rotor injection molding material is injected into the tooth circular groove 68, and the rotor ferromagnetic stamped piece 60 and the rotor shaft connection can be strengthened after the rotor injection molding material is injected into the tooth bottom groove 65.
In another aspect, the present invention also provides a rotor assembly, which includes: a rotor core 6 formed by stacking the rotor ferromagnetic laminations 60 as described above, and magnetic steel 4 mounted in the magnetic steel slots 66. Further, the rotor assembly further comprises: the rotor comprises a rotor shielding sleeve 5 sleeved outside a rotor core 6, a rotor shaft 1 extending through the center of the rotor core 6, rotor upper end rings 21 and rotor lower end rings 22 arranged at two ends of the rotor core 6, and rotor injection molding materials 3 filled in gaps among the rotor upper end rings 21, the rotor lower end rings 22, the rotor core 6, magnetic steel 4, the rotor shielding sleeve 5 and the rotor shaft 1. It should be pointed out here that, in rotor injection moulding structure, adopt tooth's socket structural connection between rotor injection moulding material 3 and rotor core 6 and the upper and lower end ring of rotor for link up inseparabler firmly, improve rotor structural strength.
Further, the utility model also provides a liquid cooling pump, this liquid cooling pump include as above rotor subassembly. Because the utility model discloses a rotor subassembly and liquid cooling pump have all adopted as above rotor ferromagnetic sheet structure, consequently possess above whole advantage.
Furthermore, the utility model discloses still provide a manufacturing method for the rotor subassembly of liquid-cooled pump. The method may comprise the steps of: punching a plurality of rotor core stamped sheets from a silicon steel sheet by using a punch press, and laminating the rotor core stamped sheets into a rotor core by using a mutual self-buckling effect to obtain a first preformed rotor assembly; performing finish turning on the excircle of the first preformed rotor assembly through an excircle turning tool to obtain a second preformed rotor assembly; pressing the second preformed rotor assembly into the rotor shielding sleeve through a shielding sleeve pressing tool to obtain a third preformed rotor assembly; sequentially placing a rotor lower end ring, a rotor shaft, a third preformed rotor assembly and a rotor upper end ring into corresponding cavities of an injection mold of a vertical injection molding machine, and performing integral injection molding with a rotor injection molding material to obtain a fourth preformed rotor assembly; and the fourth preformed rotor assembly is subjected to weight removal mode verification dynamic balance through annular drilling holes at the upper end of the rotor, and is subjected to integral magnetization through a magnetizing tool to obtain the rotor assembly.
The utility model provides an among the method, except above-mentioned whole advantages, this method still possesses following advantage: in the rotor manufacturing method, the shaft is embedded into the rotor in an injection molding mode, so that the process of pressing the shaft by the rotor is saved, the whole rotor manufacturing process is simplified, and the production efficiency is improved.
The present invention will be described in more detail below in the form of examples. As shown in the figure, the utility model provides a rotor subassembly that liquid-cooled pump/shield pump was used, including rotor shaft 1, rotor upper end ring 21, rotor lower extreme ring 22, rotor injection molding material 3, a plurality of magnet steel 4, rotor housing 5 and rotor core 6.
Specifically, the rotor upper end ring 21 and the rotor lower end ring 22 include a number of end ring grooves 211 and a number of end ring teeth 212. The rotor core 6 is composed of a plurality of rotor core laminations 60. Further, rotor core sheet 60 includes a plurality of magnetic steel slot tops 61, a plurality of magnetic steel slot bottoms 62, a plurality of self-fastening points 63, a plurality of magnetic steel positioning pillars 64, a plurality of tooth bottoms 65, a plurality of magnetic steel slots 66, a plurality of core teeth 67, and a plurality of teeth circular slots 68.
In one embodiment, the rotor upper end ring 21 and the rotor lower end ring 22 are made of metal material, and have the functions of axial positioning and verifying dynamic balance in a de-weighting mode. The end ring grooves 211 and the end ring teeth 212 are arranged on the magnetic steel grooves 66, the number of the end ring grooves 211 is the same as that of the magnetic steel grooves 66, the end ring grooves 211 and the end ring teeth 212 are evenly distributed, the symmetrical center line of the end ring grooves 211 is axially coplanar with a central dividing line Y2 of the magnetic steel grooves, and the symmetrical center line of the end ring teeth 212 is axially coplanar with a central dividing line Y1 of the tooth parts.
The rotor core 6 is formed by laminating a plurality of rotor core punching sheets 60 under the action of self-buckling points 63. The magnetic steel slot middle branching Y2 of the magnetic steel slot 66 penetrates through the center A of the rotor core excircle Y3, the magnetic steel slot is of a rectangular structure, the top 61 of the magnetic steel slot is of a closed structure, the bottom 62 of the magnetic steel slot is of an open structure, and magnetic steel positioning columns 64 are arranged on two sides of the opening respectively. The center parting line Y1 of the iron core tooth 67 passes through the center A of the rotor iron core outer circle Y3, and the iron core tooth 67 is provided with a tooth round groove 68, a self-locking point 63 and a tooth bottom groove 65 along the tooth parting line Y1.
In one embodiment, the magnetic steel 4 is inserted into the magnetic steel slot 66 by axial insertion, and is positioned radially by the magnetic steel positioning column 64, and is positioned axially by the rotor upper end ring 21 and the rotor lower end ring 22. Rotor injection molding material 3 is filled in the clearance between rotor upper end ring, rotor lower end ring, rotor core, magnet steel, rotor housing and the rotor shaft, and this contains end annular groove 211, magnet steel tank bottom 62, tooth bottom recess 65 and tooth portion circular slot 68 for combine between rotor injection molding material 3 and rotor core 6, rotor upper end ring 21 and the rotor lower end ring 22 inseparabler firmly.
In an optional embodiment, in a radial view of the magnetic steel 4, the four corner fillets are C0.5-C1, and the four corner fillets of the magnetic steel slot 66 are C0.2-C0.4, so that gaps exist between the four corners of the magnetic steel 4 and the rotor core 6, and the demagnetization resistance of the magnetic steel corners can be improved to a certain extent. In addition, the minimum width of the top 61 of the magnetic steel groove is 0.5mm-1.2mm, and the magnetic steel groove is a closed groove, so that a magnetic leakage bridge structure is formed, the effect of an armature magnetic field can be shunted to a certain extent, the demagnetization resistance of the rotor magnetic steel is improved, the air gap magnetic field sine can be greatly improved, the air gap magnetic field harmonic content is greatly reduced, particularly the 5-order harmonic content can be reduced by 2-3 times. Further, the bottom 62 of the magnetic steel slot is of an open structure, and the width of the open is 0.5-0.8 times of the width of the magnetic steel slot 66, so that the magnetic loop structure between two adjacent iron core tooth parts of the magnetic steel 4 is cut off, the magnetic field utilization rate is improved, the thickness of the rotor iron core is reduced, the overall thickness of the rotor can be reduced by 18%, the thickness of the stator can be reduced, and the material consumption, the volume, the weight and the cost of the motor can be reduced.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (9)
1. The utility model provides a rotor ferromagnetic stamped sheet, its characterized in that, the surface of rotor ferromagnetic stamped sheet is equipped with a plurality of intervals and arranges the magnet steel groove that is used for placing the magnet steel, wherein, along passing through the radial direction at rotor ferromagnetic stamped sheet's center, the length in magnet steel groove is greater than the width in magnet steel groove.
2. The rotor ferromagnetic stamped piece of claim 1, wherein all of the magnetic steel slots are circumferentially arranged at equal intervals from one another around a center of the rotor ferromagnetic stamped piece.
3. The rotor ferromagnetic punch as recited in claim 1, wherein each magnetic steel slot includes a magnetic steel slot bottom and a magnetic steel slot top located between the magnetic steel slot bottom and an outer edge of the rotor ferromagnetic punch, wherein the magnetic steel slot bottom forms an opening toward a center of the rotor ferromagnetic punch and the magnetic steel slot top is configured in a continuously extending closed shape.
4. The rotor ferromagnetic stamped piece of claim 3, wherein a magnetic steel positioning post is formed at the bottom of the magnetic steel slot at the opening at the bottom of the magnetic steel slot, wherein a distance between the magnetic steel positioning posts of each magnetic steel slot is smaller than a width of the magnetic steel slot.
5. The rotor ferromagnetic stamped piece according to claim 1, wherein portions of the rotor ferromagnetic stamped piece between adjacent magnet steel slots form core teeth, wherein an end of each core tooth is formed with a tooth bottom groove facing a center of the rotor ferromagnetic stamped piece.
6. The rotor ferromagnetic stamped piece of claim 5, wherein a self-clinching point and a tooth circular slot are further formed on a surface of each of the core teeth.
7. A rotor assembly, comprising: a rotor core formed by stacking the rotor ferromagnetic stampings as claimed in any one of claims 1 to 6, and magnetic steel mounted in the magnetic steel slots.
8. The rotor assembly of claim 7, further comprising:
the rotor shielding sleeve is sleeved outside the rotor iron core;
a rotor shaft extending through the center of the rotor core;
the rotor upper end ring and the rotor lower end ring are arranged at two ends of the rotor iron core;
and the rotor injection molding material is filled in gaps among the rotor upper end ring, the rotor lower end ring, the rotor iron core, the magnetic steel, the rotor shielding sleeve and the rotor shaft.
9. A liquid cooled pump comprising a rotor assembly as claimed in any one of claims 7 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921871274.2U CN210693596U (en) | 2019-11-01 | 2019-11-01 | Rotor ferromagnetic punching sheet, rotor assembly and liquid cooling pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921871274.2U CN210693596U (en) | 2019-11-01 | 2019-11-01 | Rotor ferromagnetic punching sheet, rotor assembly and liquid cooling pump |
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| CN210693596U true CN210693596U (en) | 2020-06-05 |
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| CN201921871274.2U Active CN210693596U (en) | 2019-11-01 | 2019-11-01 | Rotor ferromagnetic punching sheet, rotor assembly and liquid cooling pump |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113394926A (en) * | 2021-07-01 | 2021-09-14 | 浙江盘毂动力科技有限公司 | Rotor, and apparatus and method for manufacturing the same |
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2019
- 2019-11-01 CN CN201921871274.2U patent/CN210693596U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113394926A (en) * | 2021-07-01 | 2021-09-14 | 浙江盘毂动力科技有限公司 | Rotor, and apparatus and method for manufacturing the same |
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