CN209913590U - Improved structure of fastening position of split stator core - Google Patents
Improved structure of fastening position of split stator core Download PDFInfo
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- CN209913590U CN209913590U CN201920331828.3U CN201920331828U CN209913590U CN 209913590 U CN209913590 U CN 209913590U CN 201920331828 U CN201920331828 U CN 201920331828U CN 209913590 U CN209913590 U CN 209913590U
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Abstract
The improved structure of the fastening position of the split stator core comprises a circular ring-shaped core seat, wherein a plurality of fan-shaped core units are connected in series with each other to form circular ring-shaped stator core fan-shaped core units, grooves are formed in the upper portions of the two sides of each fan-shaped core unit, tenons and mortises are respectively arranged on the two sides of the lower portion of each fan-shaped core unit, two adjacent fan-shaped core units are connected through the tenons and the mortises are mutually embedded together to form a circular ring-shaped stator core, the circular ring-shaped core seat is embedded into the circular ring-shaped stator core after combination in an interference mode, the inner arc surface of at least one fan-shaped core unit is provided with a convex key, a key groove is formed in the circular ring-shaped core seat, and the convex key is embedded. Compared with the prior art, the utility model. The split stator core has the advantages that the assembly is convenient, the split stator core can be connected and fastened fully after the assembly, and the phenomenon that the motor works unreliably due to the looseness of the split iron core is avoided.
Description
Technical Field
The invention relates to the motor technology.
Background
The split stator core has obvious advantages, and has the following advantages for the motor with concentrated windings:
1. the full rate of the motor slot can be improved and can reach more than 90 percent;
2. the size of the stamping die can be reduced, and the investment cost of the die is reduced;
3. the material utilization rate can be improved, and the conventional punching sheet is mostly formed by adopting integral stamping and blanking processing, so that the material utilization rate is not high. Therefore, many motor manufacturers try to adopt split motor laminations, for example: chinese patent CN 205195442U introduces a stator core with a split structure, in which a yoke portion of a punching sheet is connected with a yoke portion of a tooth portion through a dovetail tongue-and-groove structure, which can improve the slot fullness rate, the motor efficiency and the material utilization rate, but the structure has the problem that if the fit of a tenon and a tongue-and-groove is too loose, the motor will generate noise and vibration, and if the fit is too tight, the assembly cannot be performed, therefore, the invention discloses the technology disclosed in patent application 201710517833.9, and the purpose of mutual connection and fastening of split stator cores is achieved by embedding wedge blocks among the fan-shaped core units in an interference manner. However, because two adjacent fan-shaped iron core units are only expanded in the direction of one point, the fan-shaped iron core units are easy to expand in a swinging manner along a certain fulcrum instead of linearly moving, the expanding direction is inconsistent with the close and fixed connection direction of the mortise and tenon structure between the fan-shaped iron core units, and the split stator iron cores are insufficiently connected and fastened with each other. Therefore, the applicant of the present invention has invented patent 201711069836.7, in which a groove is formed on the inner circular surface of the fan-shaped core unit, a groove is formed on the circular core seat corresponding to the groove, the groove of the fan-shaped core unit and the groove on the circular core seat form a hole, and a pin or a key is embedded in the pin hole, which solves the problem of the 201710517833.9 patent application technology, but the assembly process is complicated because the pin or key is also required to be embedded in an interference manner.
Disclosure of Invention
The utility model aims at providing an easy assembling can realize split type stator core interconnect fastening after the assembly again and be abundant, avoids appearing the motor because split type core not hard up and the improvement structure of the unreliable split type stator core's of work fastening position appears.
The utility model is realized by the circular ring-shaped iron core seat, the circular ring-shaped stator iron core formed by connecting a plurality of fan-shaped iron core units in series, the fan-shaped iron core units are composed of a plurality of laminated punching sheets, the upper parts of the two sides of the fan-shaped iron core units are provided with grooves used for winding the stator coil, the two sides of the lower part of the fan-shaped iron core units are respectively provided with a tenon and a mortise, two adjacent fan-shaped iron core units are mutually embedded together through the tenons and the mortises, the combination of a plurality of fan-shaped split fan-shaped iron core units forms the circular ring-shaped stator iron core, the circular ring-shaped iron core seat is embedded into the inner hole of the circular ring-shaped stator iron core after combination in an interference manner, the circular ring-shaped iron core seat is characterized in that the inner arc surface of at least one fan-shaped iron core unit is provided with a convex, the convex key is embedded in the key groove.
The size of the mortise of the fan-shaped iron core unit is larger than that of the convex tenon, so that the tenon of the fan-shaped iron core unit is easily inserted into the mortise of the other adjacent fan-shaped iron core unit, the assembly is very convenient, but the gap exists between the mortise and the tenon, the whole circular stator iron core is loose after being assembled, after the circular iron core seat is embedded into the inner hole of the combined circular stator iron core in an interference manner, each fan-shaped iron core unit is uniformly and radially moved outwards under the interference effect of the circular iron core seat, so that the two adjacent fan-shaped iron core units are propped open along the tangential direction of a circle taking the axis of the circular iron core seat as the center, the circular iron core seat pushes the fan-shaped iron core units to move along the radial direction, therefore, the propping movement of the fan-shaped iron core units is also the whole propping movement, and the mortise and tenon between the fan-shaped iron core units are mutually engaged in tenon structures, along with the fan-shaped iron core outwards move, namely the tight fixed connection direction is just consistent with the expanding movement of the fan-shaped iron core unit, the tenon and the mortise are tightly combined together, after the gap between the tenon and the mortise is eliminated, the iron core cannot move, the iron core seat is tensioned to split the stator iron core, and the purpose of full fastening is achieved. Adopt the key and inlay the recess, like this, ring shape core print interference inlay go into the annular stator core internal hole after the combination downthehole while, the key is inlayed and is had both realized preventing whole ring shape stator core for ring shape core print circumferential displacement in inlaying the recess, simultaneously, need not set up bolt embedding process again.
Advantageous effects
1. The structure can improve the slot fullness rate of the motor, and can reach more than 90 percent;
2. the size of the stamping die can be reduced, and the investment cost of the die is reduced;
3. the material utilization rate can be improved, and the cost is reduced;
4. the fan-shaped iron core units are firmly fixed, cannot be loosened and have low noise;
5. the process is simple and convenient to operate.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a schematic structural diagram of the annular core base before being embedded into the inner hole of the assembled annular stator core in an interference manner.
Detailed Description
The invention will now be described in further detail with reference to the accompanying drawings and examples:
as shown in fig. 1, 2, the utility model discloses a circular iron core frame 2, the ring form stator core a that several fan-shaped iron core unit 1 concatenated the formation each other, fan-shaped iron core unit 1 is folded by several and is pressed towards the piece constitution together, the upper portion of 1 both sides of fan-shaped iron core unit is provided with recess 8, recess 8 is used for around the stator coil, the both sides of 1 lower part of fan-shaped iron core unit are provided with tenon 9 and tongue-and-groove 10 respectively, two adjacent fan-shaped iron core units 1 pass through tenon 9, tongue-and-groove 10 are inlayed each other and are in the same place, the combination of 1 fan-shaped iron core unit of the fan-shaped split of a plurality of quantities just forms ring form stator core a, ring form stator core an.
As shown in fig. 2, the circular iron core base 2 sequentially comprises an iron core base positioning step 4, a tensioning section 5 and a guiding section 6, the diameter of the guiding section 6 is not larger than that of the inner hole of the circular stator iron core a, the tensioning section 5 and the guiding section 6 are connected through an inclined plane, and the tensioning section 5 is embedded into the inner hole of the circular stator iron core a after combination in an interference manner.
The inner arc surface of one fan-shaped iron core unit 1 is provided with a convex key 3, a key groove 7 is arranged on the circular ring-shaped iron core seat 2 corresponding to the convex key 3, the circular ring-shaped iron core seat 2 is embedded into the inner hole of the combined circular ring-shaped stator iron core a in an interference manner, and the convex key 3 is embedded into the key groove 7.
Claims (1)
1. An improved structure of a fastening position of a split stator core comprises a circular ring-shaped core seat and a circular ring-shaped stator core formed by mutually connecting a plurality of fan-shaped core units in series, wherein each fan-shaped core unit is composed of a plurality of laminated punching sheets, the upper parts of the two sides of each fan-shaped core unit are provided with grooves used for winding a stator coil, the two sides of the lower part of each fan-shaped core unit are respectively provided with a tenon and a mortise, the two adjacent fan-shaped core units are mutually embedded together through the tenons and the mortises, the combination of the fan-shaped core units of a plurality of fan-shaped split parts forms the circular ring-shaped stator core, the circular ring-shaped core seat is embedded into the inner hole of the combined circular ring-shaped stator core in an interference manner, the improved structure is characterized in that the inner arc surface of at least one fan-shaped core unit is provided with a convex key, the circular ring-shaped core seat corresponding, the convex key is embedded in the key groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920331828.3U CN209913590U (en) | 2019-03-15 | 2019-03-15 | Improved structure of fastening position of split stator core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920331828.3U CN209913590U (en) | 2019-03-15 | 2019-03-15 | Improved structure of fastening position of split stator core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209913590U true CN209913590U (en) | 2020-01-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920331828.3U Active CN209913590U (en) | 2019-03-15 | 2019-03-15 | Improved structure of fastening position of split stator core |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209913590U (en) |
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2019
- 2019-03-15 CN CN201920331828.3U patent/CN209913590U/en active Active
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