CN220172933U - Permanent magnet synchronous motor stator - Google Patents
Permanent magnet synchronous motor stator Download PDFInfo
- Publication number
- CN220172933U CN220172933U CN202321385822.7U CN202321385822U CN220172933U CN 220172933 U CN220172933 U CN 220172933U CN 202321385822 U CN202321385822 U CN 202321385822U CN 220172933 U CN220172933 U CN 220172933U
- Authority
- CN
- China
- Prior art keywords
- positioning sleeve
- clamping
- stator
- permanent magnet
- synchronous motor
- 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.)
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- 230000001360 synchronised effect Effects 0.000 title claims abstract description 18
- 230000006835 compression Effects 0.000 claims abstract description 6
- 238000007906 compression Methods 0.000 claims abstract description 6
- 230000008602 contraction Effects 0.000 claims description 5
- 229910001374 Invar Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 239000003973 paint Substances 0.000 claims description 3
- 239000008188 pellet Substances 0.000 claims 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 11
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000004804 winding Methods 0.000 description 8
- 230000004907 flux Effects 0.000 description 6
- 238000009826 distribution Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000003825 pressing Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000011031 large-scale manufacturing process Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Abstract
The utility model discloses a permanent magnet synchronous motor stator, which comprises a positioning sleeve, a stator main body and a compression ring, wherein the stator main body is formed by splicing a plurality of core blocks, the two sides of each core block are respectively provided with a first clamping groove and a first clamping strip, adjacent core blocks are in fit interference connection through the first clamping grooves and the first clamping strips, the positioning sleeve is provided with a second clamping strip, the outer end surface of each core block is provided with a second clamping groove, and the chip and the positioning sleeve are in fit interference connection through the second clamping strips and the second clamping strips. According to the utility model, through the spliced stator structure, each iron core of the stator can be independently wound and then spliced and assembled, so that the production efficiency of the stator is greatly improved, the production difficulty is reduced, and the first clamping strip, the first clamping groove, the second clamping strip, the second clamping groove and the positioning sleeve are matched, so that the core blocks can be tightly adhered to each other, and the stator main body and the positioning sleeve can be tightly adhered to each other in each temperature environment.
Description
Technical Field
The utility model relates to the technical field of motor stators, in particular to a permanent magnet synchronous motor stator.
Background
The stator of the permanent magnet motor is generally formed by adopting a traditional stator core structure, a stator punching sheet and an iron core are manufactured by one-time punching of a composite progressive die, and the stator core is suitable for large-scale production and low in manufacturing cost. However, the short-distance distributed winding is not beneficial to large-scale production by using an automatic winding machine, so that the manufacturing cost of the stator winding is increased, and particularly, once the defect occurs in the winding process, the whole stator is scrapped or rewound, and the time and the labor are greatly wasted.
In the prior art, although a part of spliced iron core exists, a plurality of groups of winding groups are wound with wires and then are assembled through bolt fixing, the bolts are inconvenient to install in a narrow space, gaps among stators are large, and magnetic flux distribution on the stator iron core can be influenced, so that the performance of a motor is influenced.
For example, the permanent magnet synchronous motor stator disclosed in the grant publication number CN214069681U comprises a stator core, the stator core is spliced by a plurality of core blocks to form a closed annular structure, the corresponding positions of the inner walls of the core blocks are all provided with a tooth pole for winding a set sub-coil, the two ends of the whole body formed by the core blocks are all provided with positioning grooves, the positioning grooves are embedded with fixing rings, the fixing rings at the two ends of the whole body formed by the core blocks are fixedly connected through threaded rods which are arranged on the corresponding core blocks in a penetrating manner, and an empty-avoiding groove is formed between the adjacent tooth poles.
The permanent magnet synchronous motor stator disclosed by the above also has the problem that the electron is formed by fixing a plurality of stator iron cores on the fixed ring in a splicing way through isomorphic bolts, the installation is complicated, gaps among the stator iron cores are large, and the distribution of magnetic flux on the stator iron cores can be influenced, so that the performance of the motor is influenced. Accordingly, there is a need for a permanent magnet synchronous motor stator that addresses the above-described problems.
Disclosure of Invention
The utility model aims to provide a permanent magnet synchronous motor stator, which solves the problems that in the prior art, an assembled stator is inconvenient to install, and the overlarge gaps among iron cores influence magnetic fluxes respectively.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the permanent magnet synchronous motor stator comprises a positioning sleeve, a stator main body and a compression ring, wherein the stator main body is formed by splicing a plurality of core blocks, a first clamping groove and a first clamping strip are respectively arranged on two sides of each core block, the adjacent core blocks are in interference fit connection through the first clamping groove and the first clamping strip, a second clamping strip is arranged on the positioning sleeve, a second clamping groove is formed in the outer end face of each core block, and the chip is in interference fit connection with the positioning sleeve through the second clamping strip and the second clamping strip.
Preferably, the first clamping strip and the first clamping groove are of isosceles trapezoid structures, the bottom length of the first clamping strip close to the end of the core block is smaller than the bottom length of the end of the core block, when the core block is heated and expanded at high temperature, the bottom edge of the first clamping strip and the first clamping groove can be extruded to be tightly attached, the low-temperature environment frame is arranged, when the core block is contracted, the waist of the first clamping strip can be tightly attached to the waist of the first clamping groove, so that gaps are avoided between the core blocks, and the attaching compactness between the core blocks is greatly improved.
Preferably, the second clamping strip and the first clamping groove are of isosceles trapezoid structures, the bottom length of the first clamping strip, which is close to the end of the core block, is smaller than the bottom length of the end, which is far away from the core block, so that the core block is tightly attached to the positioning sleeve, the attaching degree between the stator main body and the positioning sleeve is enhanced, and the magnetic flux distribution of the stator is enhanced through the positioning sleeve in an auxiliary manner.
Preferably, the stator main body is made of invar alloy, the thermal expansion coefficient of the stator main body is extremely low, and stator damage or abrasion caused by thermal expansion and cold contraction deformation of the stator main body can be effectively reduced, so that the service life of the stator is prolonged.
Preferably, the inner end surface of the positioning sleeve is sprayed with thermal expansion and cold contraction compensation paint.
Preferably, the edge of the inner end face of the bottom of the positioning sleeve is provided with a supporting ring, the pressing ring is in interference connection with the positioning sleeve, and the upper end face and the lower end face of the iron core are pressed and aligned through the pressing ring and the supporting ring.
Preferably, the outer end face of the positioning sleeve is provided with a positioning groove, and displacement dislocation is avoided through cooperation of the positioning groove and the motor shell.
Compared with the prior art, the utility model has the beneficial effects that:
1. according to the utility model, through the spliced stator structure, each iron core of the stator can be independently wound and then spliced and assembled, so that the production efficiency of the stator is greatly improved, the installation mode of interference connection is simple and convenient, and the production difficulty is reduced.
2. According to the utility model, the first clamping strip, the first clamping groove, the second clamping strip, the second clamping groove and the positioning sleeve are matched, so that the core block and the stator main body and the positioning sleeve can be tightly attached under various temperature environments, thereby reducing gaps among parts, improving the magnetic flux distribution effect of the stator and improving the motor performance.
3. According to the utility model, the thermal expansion compensation coating is arranged on the inner end surface of the positioning sleeve, so that the shaking caused by the clearance generated between the stator main body and the positioning sleeve due to the difference of the temperature and the thermal expansion coefficient is avoided, and the stability of the equipment is further improved.
4. According to the stator, the core blocks are pressed and aligned through the pressing ring and the supporting ring, so that the stability of the stator is further improved.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present utility model;
FIG. 2 is an exploded view of the present utility model;
FIG. 3 is a front cross-sectional view of the present utility model;
fig. 4 is a top view showing a state where the stator body and the positioning sleeve are engaged with each other.
In the figure: 1 positioning sleeve, 11 second clamping strips, 12 positioning grooves, 13 backing rings, 2 stator main bodies, 21 core blocks, 211 first clamping grooves, 212 first clamping strips, 213 second clamping grooves and 3 compression rings.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Example 1
Referring to fig. 1 to 4, the permanent magnet synchronous motor stator in the drawings comprises a positioning sleeve 1, a stator main body 2 and a compression ring 3, wherein the stator main body 2 is formed by splicing a plurality of core blocks 21, two sides of each core block 21 are respectively provided with a first clamping groove 211 and a first clamping strip 212, adjacent core blocks 21 are in interference fit connection through the first clamping grooves 211 and the first clamping strips 212, a second clamping strip 11 is arranged on the positioning sleeve 1, a second clamping groove 213 is arranged on the outer end surface of each core block 21, and a chip is in interference fit connection with the positioning sleeve 1 through the second clamping strips 11 and the second clamping grooves 213
The first clamping strip 212 and the first clamping groove 211 are of isosceles trapezoid structures, the bottom length of the end, close to the core block 21, of the first clamping strip 212 is smaller than the bottom length of the end, far away from the core block 21, so that when the core block 21 is heated and expanded at a high temperature, the bottom edge of the first clamping strip 212 and the first clamping groove 211 can be tightly attached to each other in an extrusion mode, the low-temperature environment frame is arranged, when the core block 21 is contracted, the waist of the first clamping strip 212 can be tightly attached to the waist of the first clamping groove 211, gaps are avoided between the core blocks 21, and the compactness of attaching between the core blocks 21 is greatly improved.
The second clamping strip 11 and the first clamping groove 211 are of isosceles trapezoid structures, the bottom length of the first clamping strip 212 close to the end of the core block 21 is smaller than that of the end far away from the core block 21, so that the core block 21 is tightly attached to the positioning sleeve 1, the attachment degree between the stator main body 2 and the positioning sleeve 1 is enhanced, and the magnetic flux distribution of the stator is enhanced in an auxiliary manner through the positioning sleeve 1.
The stator main body 2 is made of invar alloy, the thermal expansion coefficient is extremely low, and stator damage or abrasion caused by thermal expansion and cold contraction deformation of the stator main body 2 can be effectively reduced, so that the service life of the stator is prolonged.
The inner end surface of the positioning sleeve 1 is sprayed with compensation paint for thermal expansion and cold contraction.
The edge of the inner end face of the bottom of the positioning sleeve 1 is provided with a supporting ring 13, the pressing ring 3 is in interference connection with the positioning sleeve 1, and the upper end face and the lower end face of the iron core are pressed and aligned through the pressing ring 3 and the supporting ring 13.
The outer end face of the positioning sleeve 1 is provided with a positioning groove 12, and displacement dislocation is avoided through the cooperation of the positioning groove 12 and the motor shell.
The stator is installed: the core blocks 21 with copper wire windings after processing of each production line are sequentially inserted into the positioning sleeve 1, the second clamping strips 11 are inserted into the second clamping grooves 213, the first clamping strips 212 are inserted into the first clamping grooves 211 of the adjacent core blocks 21, so that the core blocks 21 form a complete stator main body 2, copper wires of the core blocks 21 on the corresponding parallel windings are welded, the compression ring 3 is inserted into the top of the positioning sleeve 1, the positioning sleeve 1 compresses the core blocks 21 and keeps the heights consistent, and finally the stator is installed into a permanent magnet synchronous motor shell.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The permanent magnet synchronous motor stator is characterized by comprising:
positioning sleeve (1), stator main part (2) and clamping ring (3), stator main part (2) are formed by the concatenation of a plurality of pellet (21), the both sides of pellet (21) are provided with first draw-in groove (211) and first draw-in bar (212) respectively, and is adjacent through first draw-in groove (211) and first draw-in bar (212) cooperation interference connection between pellet (21), be provided with second draw-in bar (11) on positioning sleeve (1), the outer terminal surface of pellet (21) is provided with second draw-in groove (213), pellet and positioning sleeve (1) are through second draw-in bar (11) and second draw-in groove (213) cooperation interference connection.
2. The permanent magnet synchronous motor stator according to claim 1, wherein: the first clamping strips (212) and the first clamping grooves (211) are of isosceles trapezoid structures, and the bottom side of the first clamping strips (212) close to the end of the core block (21) is smaller than the bottom side of the end far away from the core block (21).
3. The permanent magnet synchronous motor stator according to claim 1, wherein: the second clamping strips (11) and the first clamping grooves (211) are of isosceles trapezoid structures, and the bottom side of the first clamping strips (212) close to the end of the core block (21) is smaller than the bottom side of the end far away from the core block (21).
4. The permanent magnet synchronous motor stator according to claim 1, wherein: the stator body (2) is made of invar alloy.
5. The permanent magnet synchronous motor stator according to claim 1, wherein: and the inner end surface of the positioning sleeve (1) is sprayed with thermal expansion and cold contraction compensation paint.
6. The permanent magnet synchronous motor stator according to claim 1, wherein: the edge of the inner end face of the bottom of the positioning sleeve (1) is provided with a supporting ring (13), and the compression ring (3) is in interference connection with the positioning sleeve (1).
7. The permanent magnet synchronous motor stator according to claim 1, wherein: the outer end face of the positioning sleeve (1) is provided with a positioning groove (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321385822.7U CN220172933U (en) | 2023-06-02 | 2023-06-02 | Permanent magnet synchronous motor stator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321385822.7U CN220172933U (en) | 2023-06-02 | 2023-06-02 | Permanent magnet synchronous motor stator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220172933U true CN220172933U (en) | 2023-12-12 |
Family
ID=89064954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321385822.7U Active CN220172933U (en) | 2023-06-02 | 2023-06-02 | Permanent magnet synchronous motor stator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220172933U (en) |
-
2023
- 2023-06-02 CN CN202321385822.7U patent/CN220172933U/en active Active
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| GR01 | Patent grant |