CN215772689U - Block back-wound stator structure - Google Patents
Block back-wound stator structure Download PDFInfo
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- CN215772689U CN215772689U CN202122178687.6U CN202122178687U CN215772689U CN 215772689 U CN215772689 U CN 215772689U CN 202122178687 U CN202122178687 U CN 202122178687U CN 215772689 U CN215772689 U CN 215772689U
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Abstract
The utility model belongs to the technical field of high-speed motors, and particularly relates to a partitioned back-wound stator structure. The stator structure comprises a stator core, wherein the stator core is assembled into an annular structure by a plurality of stator core units, each stator core unit comprises a stator inner tooth, a tooth root radially extending from the stator inner tooth and a stator outer tooth positioned at the top end of the tooth root, a stator yoke part is arranged on one side of the tooth root, a protruding part is arranged at the free end of the stator yoke part, a groove is correspondingly arranged on the other side of the tooth root, and adjacent stator core units are inserted into the grooves through the protruding parts to form the annular structure. The armature coil is wound on the yoke part of the stator, and the insulating material is inserted between the outer teeth of the stator, so that the coil and the shell can be effectively separated, the armature coil is prevented from contacting the shell, the insulation reliability is improved, the winding process of the stator core is more convenient, and the insulation reliability between the stator and the shell can be improved.
Description
Technical Field
The utility model belongs to the technical field of high-speed motors, and particularly relates to a partitioned back-wound stator structure.
Background
Currently, the current practice is. With the rapid development of economic construction in China, more and more occasions are applied to high-speed permanent magnet motors, such as air compressors, high-speed machine tools, vacuum pumps and the like. The motor has the advantages of high power density, high efficiency, fast dynamic response, small size and the like.
The existing high-speed back-wound motor winding has the structural characteristics as shown in fig. 1, coils are embedded into stator slots, the current direction in the slots of the structure is consistent with the conventional winding direction, and a group of coils are embedded into one stator slot, so that the copper consumption is reduced, the height of the end part of the coil is reduced, and the copper consumption is reduced compared with a lap winding or a wave winding.
The existing structure has the following defects: when the stator is installed in the casing, the coil conductor wound on the outer wall of the stator yoke may contact with the casing, resulting in poor insulation, and additional insulation treatment, such as paint dipping and drying, insulation paper separation, etc., is required. In addition, when the number of turns of the coil is large, the existing whole stator structure has complex winding process and low production efficiency, and therefore, a stator structure scheme capable of reducing the winding complexity and improving the production efficiency needs to be provided.
Disclosure of Invention
The utility model aims to overcome the defects in the prior art and provide a segmented back-wound stator structure. The armature coil is wound on the yoke part of the stator, and the insulating material is inserted between the outer teeth of the stator, so that the coil and the shell can be effectively separated, the armature coil is prevented from contacting the shell, the insulation reliability is improved, the winding process of the stator core is more convenient, and the insulation reliability between the stator and the shell can be improved.
In order to achieve the technical purpose, the embodiment of the utility model adopts the technical scheme that: the utility model provides a piecemeal back of body wound stator structure, includes stator core, stator core assembles into annular structure, each by a plurality of stator core unit the stator core unit includes the stator internal tooth and follows the radial radical that extends of stator internal tooth and being located the stator external tooth on root of tooth top, one side of root of tooth is provided with stator yoke portion, stator yoke portion's free end is provided with the bellying, the opposite side corresponding position of root of tooth is provided with the recess, and adjacent stator core unit is pegged graft through bellying and recess and is formed annular structure.
Further, the stator internal teeth are circular arc surfaces, the circular arc surfaces of the stator internal teeth form an inner ring surface, and gaps exist between the adjacent stator internal teeth.
Further, the stator external teeth are arc surfaces, the arc surface of each stator external tooth forms an outer ring surface, and a gap exists between the adjacent stator external teeth.
Further, the tooth root part comprises an inner tooth root and an outer tooth root, and the tooth root part between the inner tooth of the stator and the inner end surface of the yoke part of the stator is the inner tooth root; and the tooth root part between the outer teeth of the stator and the outer end surface of the yoke part of the stator is an outer tooth root.
Further, an inner winding part is formed between the inner teeth, the inner tooth roots and the inner end face of the stator yoke part which are adjacent; and an outer winding part is formed between the outer teeth of the adjacent stators, the outer tooth root and the outer end surface of the stator yoke part.
Further, the inner winding portion, the outer winding portion and the stator yoke portion form a winding portion for disposing a coil wound on the stator yoke portion.
Furthermore, an insulating material for separating the connection of the coil and the inner end face of the outer teeth of the stator is arranged between the coil and the inner end face of the outer teeth of the stator.
Further, the stator core unit is integrally formed.
The technical scheme provided by the embodiment of the utility model has the following beneficial effects:
(1) the utility model discloses a segmented back-wound stator structure which comprises a stator core, wherein the stator core is of an annular structure formed by assembling a plurality of stator core unit groups, each stator core unit comprises a stator inner tooth, a tooth root part radially extending from the stator inner tooth and a stator outer tooth positioned at the top end of the tooth root part, one side of the tooth root part is provided with a stator yoke part, the free end of the stator yoke part is provided with a convex part, the other side of the tooth root part is correspondingly provided with a groove, adjacent stator core units are inserted into the grooves through the convex parts to form the annular structure, a coil is wound on the stator yoke part, and an insulating material for separating the connection of the coil and the stator outer tooth is arranged between the coil and the inner end surface of the stator outer tooth. By adopting the stator structure, only the single stator needs to be wound, and then the stator is spliced into a complete stator assembly, so that the winding difficulty is reduced, and the winding efficiency is improved.
(2) The stator structure of the utility model is provided with the stator external teeth, the armature coil is wound on the yoke part of the stator, and the insulating material is inserted between the stator external teeth, so that the coil and the shell can be effectively separated, the armature coil is prevented from contacting the shell, and the insulation reliability is improved.
(3) The stator structure of the utility model is easy to process, and compared with the traditional integral iron core, the material utilization rate in the production process is high.
Drawings
Fig. 1 is a schematic structural diagram of a conventional integral back-wound stator winding.
Fig. 2 is a schematic structural diagram of a segmented back-wound stator winding according to the present invention.
Fig. 3 is a schematic structural diagram of a stator core unit in the segmented back-wound stator winding of fig. 2.
Description of reference numerals: 1-stator internal teeth; 2-a stator yoke; 3-stator external teeth; 4-a boss; 5-a groove; 6-inner tooth root; 7-outer tooth root; 8-a coil; 9-an insulating material; 10-stator slots; 11-stator yoke.
Detailed Description
In the description of the present invention, it is to be understood that the positional terms such as "inner" and "outer" are generally used for indicating the positional relationship and the orientation shown in the drawings, and are used for convenience of description and simplicity of description, and in the case of not making a reverse description, these positional terms do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and thus, should not be construed as limiting the scope of the present invention.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
As shown in fig. 2-3, a piecemeal back-wound stator structure, includes stator core, stator core assembles into annular structure by twelve integrated into one piece's stator core unit, each the stator core unit includes stator internal tooth 1 and follows the radial root of tooth that extends of stator internal tooth 1 and is located the stator external tooth 3 on root of tooth top, one side of root of tooth is provided with stator yoke portion 2, the free end of stator yoke portion 2 is provided with bellying 4, the opposite side corresponding position of root of tooth is provided with recess 5, and adjacent stator core unit forms annular structure through bellying 4 and recess 5 grafting.
The stator internal teeth 1 are arc surfaces, and the arc surfaces of the stator internal teeth 1 form an inner ring surface.
The stator external teeth 3 are arc surfaces, and the arc surfaces of the stator external teeth 3 form an outer ring surface.
The tooth root part comprises an inner tooth root 6 and an outer tooth root 7, and the tooth root part between the inner tooth 1 of the stator and the inner end surface of the yoke part 2 of the stator is the inner tooth root 6; and the tooth root part between the outer teeth 3 of the stator and the outer end surface of the yoke part 2 of the stator is an outer tooth root 7.
An inner winding part is formed between the inner teeth 1, the inner tooth roots 6 and the inner end surface of the stator yoke part 2 which are adjacent; and an outer winding part is formed between the adjacent outer teeth 3 and outer teeth 7 of the stator and the outer end surface of the stator yoke part 2.
The inner winding portion, the outer winding portion and the stator yoke portion 2 form a winding portion, the winding portion is used for arranging a coil 8, and the coil 8 is wound on the stator yoke portion 2.
And an insulating material 9 for separating the connection of the coil 8 and the inner end surface of the outer teeth 3 of the stator is arranged between the coil and the inner end surface of the outer teeth 3 of the stator, and the insulating material 9 is insulating paper or an insulating plug board.
Compared with the existing stator core, the stator core is spliced together through the convex parts 4 and the grooves 5 to form a complete stator assembly, only the single stator core needs to be wound during winding, compared with an integral stator, the requirement on equipment is greatly reduced, winding can be performed only through the simple winding die, and the production efficiency is improved. After the coil 8 is wound, the insulating material 9 is inserted between the stator external teeth 3 and the coil 8 to be cut off, thereby achieving a good insulating effect. The stator structure can reduce the height of the end part, reduce the using amount of coils, reduce copper consumption and improve the efficiency of the motor.
Finally, it should be noted that the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to examples, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (8)
1. The utility model provides a piecemeal back of body wound stator structure, includes stator core, its characterized in that, stator core assembles into annular structure, each by a plurality of stator core unit the stator core unit includes stator internal tooth (1) and follows the radial root of tooth that extends of stator internal tooth (1) and is located the stator external tooth (3) on root of tooth top, one side of root of tooth is provided with stator yoke portion (2), the free end of stator yoke portion (2) is provided with bellying (4), the opposite side of root of tooth corresponds the position and is provided with recess (5), and adjacent stator core unit is pegged graft through bellying (4) and recess (5) and is formed annular structure.
2. The segmented back-wound stator structure according to claim 1, wherein the stator internal teeth (1) are circular arc surfaces, and the circular arc surface of each stator internal tooth (1) forms an inner annular surface.
3. The segmented back-wound stator structure according to claim 1, wherein the stator outer teeth (3) are circular arc surfaces, and the circular arc surface of each stator outer tooth (3) forms an outer annular surface.
4. The segmented back-wound stator structure according to claim 1, wherein the tooth root portion comprises an inner tooth root (6) and an outer tooth root (7), the tooth root portion between the stator inner teeth (1) and the inner end face of the stator yoke portion (2) being an inner tooth root (6); and the tooth root part between the outer teeth (3) of the stator and the outer end surface of the stator yoke part (2) is an outer tooth root (7).
5. The segmented back-wound stator structure according to claim 4, wherein an inner winding part is formed between the inner teeth (1), the inner tooth roots (6) and the inner end face of the stator yoke part (2) which are adjacent to each other; and an outer winding part is formed between the outer teeth (3) of the adjacent stators, the outer tooth root (7) and the outer end surface of the stator yoke part (2).
6. The segmented back-wound stator structure according to claim 5, characterized in that the inner and outer winding portions form a winding portion with a stator yoke (2) for arranging a coil (8), the coil (8) being wound on the stator yoke (2).
7. A segmented back-wound stator structure according to claim 6, characterized in that an insulating material (9) is arranged between the coils (8) and the inner end surface of the outer teeth (3) of the stator for isolating the connection of the two.
8. The segmented back-wound stator structure of claim 1, wherein said stator core elements are integrally formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122178687.6U CN215772689U (en) | 2021-09-09 | 2021-09-09 | Block back-wound stator structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122178687.6U CN215772689U (en) | 2021-09-09 | 2021-09-09 | Block back-wound stator structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215772689U true CN215772689U (en) | 2022-02-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122178687.6U Active CN215772689U (en) | 2021-09-09 | 2021-09-09 | Block back-wound stator structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215772689U (en) |
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2021
- 2021-09-09 CN CN202122178687.6U patent/CN215772689U/en active Active
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