CN213243657U - Sectional stator core with tooth part made of oriented silicon steel material - Google Patents
Sectional stator core with tooth part made of oriented silicon steel material Download PDFInfo
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- CN213243657U CN213243657U CN202022386706.XU CN202022386706U CN213243657U CN 213243657 U CN213243657 U CN 213243657U CN 202022386706 U CN202022386706 U CN 202022386706U CN 213243657 U CN213243657 U CN 213243657U
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Abstract
The utility model provides a sectional stator core with a tooth part made of oriented silicon steel material, which comprises a stator yoke, stator teeth and a stator inner ring; the stator yoke and the stator inner ring are made of non-oriented silicon steel materials, and the stator teeth are made of oriented silicon steel materials; the stator yoke is of a circular ring type structure, and a plurality of dovetail grooves are formed in the circular ring of the stator yoke; the upper end part of the stator tooth is provided with a convex end which is embedded with a dovetail groove of the stator yoke, and the lower end part of the stator tooth is provided with a square groove which is embedded with an inner circular ring of the stator; the stator inner circular ring comprises a closed slot punching sheet and an open slot punching sheet, and is formed by laminating spacers of a plurality of closed slot punching sheets and open slot punching sheets; the outer circle edges of the closed slot punching sheet and the open slot punching sheet are provided with a plurality of bosses which are embedded with the square slots. The utility model discloses structural performance is higher, and the assembly is accurate, simple structure, simple to operate, and manufacturing cost is lower, and the quality is more reliable, has still solved adverse effects such as motor tooth's socket torque simultaneously.
Description
Technical Field
The utility model relates to a tooth portion adopts sectional type stator core that has oriented silicon steel material belongs to the technical field of motor stator core structure.
Background
The power-assisted steering device has the characteristics of exquisite and compact structure, energy conservation, environmental protection and the like, and is the most humanized product in the current power-assisted steering of the automobile.
The electric power steering system is additionally provided with a steering angle and torque sensor, an electronic controller system (ECU), a brushless motor and other components on the basis of the traditional mechanical power steering system to realize the function of auxiliary power assistance through electric drive, and is a new generation of electromechanical integrated automobile intelligent power steering system, and the motor is used as a key component of the power assembly.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a tooth portion adopts the sectional type stator core that has the oriented silicon steel material, and this tooth portion adopts the sectional type stator core that has the oriented silicon steel material to promote motor performance, has reduced manufacturing cost and assembly process required precision.
The utility model discloses a following technical scheme can realize.
The utility model provides a sectional stator core with a tooth part made of oriented silicon steel material, which comprises a stator yoke, stator teeth and a stator inner ring; the stator yoke and the stator inner ring are made of non-oriented silicon steel materials, and the stator teeth are made of oriented silicon steel materials; the stator yoke is of a circular ring type structure, and a plurality of dovetail grooves are formed in the circular ring of the stator yoke; the upper end part of the stator tooth is provided with a convex end which is embedded with a dovetail groove of the stator yoke, and the lower end part of the stator tooth is provided with a square groove which is embedded with an inner circular ring of the stator; the stator inner circular ring comprises a closed slot punching sheet and an open slot punching sheet, and is formed by laminating spacers of a plurality of closed slot punching sheets and open slot punching sheets; the outer circle edges of the closed slot punching sheet and the open slot punching sheet are provided with a plurality of bosses which are embedded with the square slots; and assembling the stator yoke, the stator teeth and the stator inner ring to form a complete stator core.
The dovetail grooves are evenly distributed along the inner edge of the circular ring of the stator yoke.
The number of the stator teeth is equal to that of the dovetail grooves.
The stator yoke is formed by laminating a plurality of stator yoke punching sheets.
The stator teeth are formed by laminating a plurality of stator tooth punching sheets.
And the punching sheet rolling direction of the stator tooth punching sheet is radially superposed with the stator tooth.
The number of the bosses is equal to that of the square grooves.
And processing and removing the connection part of the tooth tips at every interval of the punching sheets of the inner ring of the stator to form a closed slot punching sheet with the connection part of the tooth tips and an open slot punching sheet with the connection part of the tooth tips removed.
The beneficial effects of the utility model reside in that: the split structure of the tooth part and the yoke part is adopted, so that the high slot filling rate of the motor winding is ensured; the integral stator inner circle ring structure is adopted, the roundness of the stator inner circle is guaranteed to a certain extent, and the problem of overlarge tooth socket torque caused by non-concentricity between tooth blocks is solved; the inner circular ring of the stator adopts two groove structures, the closed groove can reduce the tooth space effect caused by the groove opening, the tooth space torque is reduced, and the open groove structure reduces the magnetic leakage effect; the stator teeth are made of oriented silicon steel materials, compared with non-oriented silicon steel materials, the magnetic materials have strong directionality, the material has excellent high magnetic conductivity and low loss characteristics in the easy-magnetization rolling direction, the knee point of a magnetization curve along the rolling direction can reach 1.8T, and the stator tooth punching plates are made of oriented silicon steel materials, so that the saturation magnetic density of the tooth parts can be effectively improved, and the cogging torque caused by the saturation of the tooth parts can be weakened while the torque density of the motor is improved.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a schematic structural diagram of a stator yoke punching sheet of the present invention;
FIG. 3 is a schematic structural view of a stator tooth punching sheet of the present invention;
fig. 4 is a schematic structural view of the stator teeth of the present invention;
FIG. 5 is a schematic view of the stator tooth orientation of the present invention;
FIG. 6 is a schematic structural view of the closed slot punching sheet of the present invention;
fig. 7 is a schematic structural diagram of the open slot punching sheet of the present invention;
fig. 8 is a distribution position diagram of the spot welding of the present invention;
in the figure: 1-stator yoke, 11-dovetail groove, 2-stator tooth, 21-protruding end, 22-square groove, 3-stator inner circular ring, 31-closed groove punching sheet, 311-tooth tip connecting part, 312-boss, 32-open groove punching sheet and 5-spot welding.
Detailed Description
The technical solution of the present invention is further described below, but the scope of the claimed invention is not limited to the described.
As shown in fig. 1, 4, 6 and 7, a segmented stator core with a tooth portion made of oriented silicon steel material includes a stator yoke 1, stator teeth 2 and a stator inner ring 3; the stator yoke 1 and the stator inner ring 3 are made of non-oriented silicon steel materials, and the stator teeth 2 are made of oriented silicon steel materials (such as grain-oriented silicon steel materials); the stator yoke 1 is of a circular ring structure, a plurality of dovetail grooves 11 are formed in a circular ring of the stator yoke 1, and the dovetail grooves 11 are embedded with the protruding ends 21 of the stator teeth 2 to form a complete iron core; the upper end part of the stator tooth 2 is provided with a convex end 21 which is embedded with the dovetail groove 11 of the stator yoke 1, so that the tooth part and the yoke part are embedded with each other conveniently, and the lower end part is provided with a square groove 22 which is embedded with the stator inner circular ring 3, so that the stator inner circular ring 3 is embedded conveniently; the stator inner circular ring 3 comprises a closed slot punching sheet 31 and an open slot punching sheet 32, the stator inner circular ring 3 is formed by laminating a plurality of closed slot punching sheets 31 and open slot punching sheets 32 by spacers, and the assembled complete stator core is in a structure that the open slot punching sheets and the closed slot punching sheets are alternately laminated; the outer circle edges of the closed slot punching sheet 31 and the open slot punching sheet 32 are provided with a plurality of bosses 312 which are used for being embedded with the square slots 22; and assembling the stator yoke 1, the stator teeth 2 and the stator inner ring 3 to form a complete stator core.
Furthermore, the stator yoke 1, the stator teeth 2 and the stator inner ring 3 are formed by laminating high-magnetic-conductance silicon steel sheets, so that eddy current loss is reduced.
Preferably, the stator teeth 2 are made of oriented silicon steel (such as grain-oriented silicon steel), and compared with non-oriented silicon steel, the material has strong magnetic properties, excellent high magnetic permeability and low loss characteristics in the easy-magnetization rolling direction, and the saturation magnetic density is generally higher than that of the non-oriented silicon steel; secondly, the non-oriented silicon steel sheet can be regarded as the same magnetic characteristic in all directions, the knee point of the magnetization curve is generally 1.6T, while the oriented silicon steel sheet is produced by orderly arranging the crystal grains of the material through a certain process, so that the rolling direction of the oriented silicon steel sheet is different from the magnetic characteristic perpendicular to the rolling direction (namely the shearing direction), the knee point of the magnetization curve along the rolling direction can reach 1.8T, and the shearing direction is about 1.4T.
The dovetail grooves 11 are uniformly distributed along the inner edge of the circular ring of the stator yoke 1.
The number of the stator teeth 2 is equal to that of the dovetail grooves 11.
The stator yoke 1 is formed by laminating a plurality of stator yoke punching sheets, as shown in fig. 2.
The stator teeth 2 are formed by laminating a plurality of stator tooth punching sheets, as shown in fig. 3.
The punching sheet rolling direction of the stator tooth punching sheet is radially superposed with that of the stator teeth 2, as shown in fig. 5, the direction of the magnetic force line on the stator teeth 2 is consistent with the high magnetic conductivity direction of the oriented silicon steel material, so that the aim of improving the saturation magnetic density of the stator teeth of the motor is achieved, the torque density of the motor in unit volume is further improved, the performance of the motor is improved, the usage amount of the stator core punching sheet is reduced, and the cost of the motor is reduced.
The number of the bosses 312 is equal to that of the square grooves 22.
The inner ring 3 of the stator is provided with punching sheets at intervals, the tooth tip connecting part 311 is machined and removed, and a closed slot punching sheet 31 with the tooth tip connecting part 311 and an open slot punching sheet 32 with the tooth tip connecting part 311 removed are formed.
Preferably, the complete annular structure of the closed slot punching sheet 31 ensures the inner circle roundness of the stator, but at the same time, the punching sheet is determined to be only made of non-oriented silicon steel material; after the ring 3 of the stator is laminated, the tooth point connecting part 311 is machined and removed from every other punching sheet to form an open slot punching sheet 32.
Further, the closed slot punching sheet 31 can avoid the cogging effect caused by the open slot, correspondingly weaken the cogging torque, and the open slot punching sheet 32 can reduce the magnetic leakage effect.
Specifically, the utility model discloses an assembly process as follows:
firstly, respectively loading injection-molded slot insulation into two ends of a laminated stator tooth 2, wherein the slot insulation is divided into an upper interface and a lower interface;
secondly, winding enameled wires on the insulated stator teeth 2, and embedding the stator teeth 2 subjected to coil inserting with a stator yoke 1 and a stator inner circular ring 3 by adopting a tool to form a complete stator core;
after the three parts are embedded, spot welding 5 is carried out on the central position of the joint of the tooth parts and the yoke parts of the upper end surface and the lower end surface of the stator core, as shown in fig. 8, the three parts are axially fixed and cannot fall off due to dislocation, the stator core is ensured to be tightly connected, and the connection strength between the stator core and the yoke parts is improved;
and fourthly, the stator core is arranged in the machine shell, and the core and the machine shell are in interference fit.
To sum up, the utility model discloses change former sectional type iron core structure into combination formula stator iron core structure, guaranteed circle circularity in the stator iron core, adopted to have the oriented silicon steel sheet to improve motor performance, reduced the use amount of stator iron core towards the piece to comprehensive utilization two kinds of groove structure advantages, make it possess structural performance higher, simple structure, simple to operate, location accuracy, performance height, manufacturing cost are lower, the more reliable characteristics of quality, still solved adverse effects such as motor tooth's socket torque simultaneously.
Claims (8)
1. The utility model provides a tooth adopts sectional type stator core that has oriented silicon steel material, includes stator yoke (1), stator tooth (2), stator inner ring (3), its characterized in that: the stator yoke (1) and the stator inner ring (3) are made of non-oriented silicon steel materials, and the stator teeth (2) are made of oriented silicon steel materials; the stator yoke (1) is of a circular ring type structure, and a plurality of dovetail grooves (11) are formed in the circular ring of the stator yoke (1); the upper end part of the stator tooth (2) is provided with a convex end (21) which is embedded with the dovetail groove (11) of the stator yoke (1), and the lower end part is provided with a square groove (22) which is embedded with the stator inner circular ring (3); the stator inner circular ring (3) comprises a closed slot punching sheet (31) and an open slot punching sheet (32), and the stator inner circular ring (3) is formed by laminating a plurality of closed slot punching sheets (31) and open slot punching sheets (32) through spacers; the outer circle edges of the closed slot punching sheet (31) and the open slot punching sheet (32) are respectively provided with a plurality of bosses (312) which are used for being embedded with the square slots (22); and assembling the stator yoke (1), the stator teeth (2) and the stator inner ring (3) to form a complete stator core.
2. The segmented stator core having an oriented silicon steel material for a tooth portion as claimed in claim 1, wherein: the dovetail grooves (11) are uniformly distributed along the inner edge of the circular ring of the stator yoke (1).
3. The segmented stator core having an oriented silicon steel material for a tooth portion as claimed in claim 1, wherein: the number of the stator teeth (2) is equal to that of the dovetail grooves (11).
4. The segmented stator core having an oriented silicon steel material for a tooth portion as claimed in claim 1, wherein: the stator yoke (1) is formed by laminating a plurality of stator yoke punching sheets.
5. The segmented stator core having an oriented silicon steel material for a tooth portion as claimed in claim 1, wherein: the stator teeth (2) are formed by laminating a plurality of stator tooth punching sheets.
6. The segmented stator core having an oriented silicon steel material for a tooth portion as claimed in claim 5, wherein: the punching sheet rolling direction of the stator tooth punching sheet is radially superposed with that of the stator teeth (2).
7. The segmented stator core having an oriented silicon steel material for a tooth portion as claimed in claim 1, wherein: the number of the bosses (312) is equal to that of the square grooves (22).
8. The segmented stator core having an oriented silicon steel material for a tooth portion as claimed in claim 1, wherein: and processing and removing the tooth tip connection part (311) every time a punching sheet is arranged on the inner circular ring (3) of the stator at intervals to form a closed slot punching sheet (31) with the tooth tip connection part (311) and an open slot punching sheet (32) with the tooth tip connection part (311) removed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022386706.XU CN213243657U (en) | 2020-10-23 | 2020-10-23 | Sectional stator core with tooth part made of oriented silicon steel material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022386706.XU CN213243657U (en) | 2020-10-23 | 2020-10-23 | Sectional stator core with tooth part made of oriented silicon steel material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213243657U true CN213243657U (en) | 2021-05-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022386706.XU Active CN213243657U (en) | 2020-10-23 | 2020-10-23 | Sectional stator core with tooth part made of oriented silicon steel material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213243657U (en) |
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2020
- 2020-10-23 CN CN202022386706.XU patent/CN213243657U/en active Active
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