CN111404294A - Stator assembly of external rotor motor - Google Patents
Stator assembly of external rotor motor Download PDFInfo
- Publication number
- CN111404294A CN111404294A CN202010388316.8A CN202010388316A CN111404294A CN 111404294 A CN111404294 A CN 111404294A CN 202010388316 A CN202010388316 A CN 202010388316A CN 111404294 A CN111404294 A CN 111404294A
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- China
- Prior art keywords
- stator
- skeleton
- core
- iron core
- tooth
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/16—Stator cores with slots for windings
- H02K1/165—Shape, form or location of the slots
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/46—Fastening of windings on the stator or rotor structure
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Insulation, Fastening Of Motor, Generator Windings (AREA)
Abstract
The invention aims to provide the stator assembly of the outer rotor motor, which can improve the output power of the outer rotor motor, has a better insulation effect and is convenient to process and assemble. In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides an external rotor electric machine's stator module, includes stator core and sets up the stator skeleton at stator core axial both ends, stator core includes iron core ring portion and is located the iron core tooth portion in iron core ring portion circumference outside, stator skeleton establishes outside iron core tooth portion and is located the outer skeleton tooth cover portion of skeleton ring portion circumference by skeleton ring portion and cover, skeleton tooth cover portion and iron core tooth portion one-to-one and have the holding tank that is used for cooperating iron core tooth portion, is formed with the wire winding groove that steps down to the winding set between adjacent skeleton tooth cover portion, skeleton tooth cover portion axial tip extends in order to be formed with the locating plate that is located iron core tooth portion outer end axial side to the circumference outside, one side that stator core was kept away from to the locating plate is equipped with the stopper.
Description
Technical Field
The invention relates to a motor stator, in particular to a stator assembly of an outer rotor motor.
Background
As shown in fig. 1 and 2 of the patent with application number 201120185580.8, a winding coil needs to be wound on a stator, insulation between the winding coil and a stator core needs to be ensured, for the stator core with a small axial length, stator frameworks (coil frameworks) are directly assembled at two ends of the stator core, and the surface of a core slot of the stator core is covered by the stator frameworks. For the stator core with long axial length, insulating paper is placed in the core slots to isolate the stator core from the windings.
The number of turns of the winding cannot be too large, and the two ends of the winding coil can deviate towards the circumferential outer side, so that the winding coil can be contacted with the rotor, and the existing outer rotor motor has the problem of too small output power.
And some stator core's iron core slots quantity is a lot, and some stator core's iron core slots quantity reaches twenty more or thirty many grooves for stator skeleton is difficult to process, and the defective percentage is higher, in case there is a bit of processing problem just can lead to stator skeleton to be difficult to assemble with stator core.
Disclosure of Invention
The invention aims to provide the stator assembly of the outer rotor motor, which can improve the output power of the outer rotor motor, has a better insulation effect and is convenient to process and assemble.
In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides an external rotor electric machine's stator module, includes stator core and sets up the stator skeleton at stator core axial both ends, stator core includes iron core ring portion and is located the iron core tooth portion in iron core ring portion circumference outside, stator skeleton establishes outside iron core tooth portion and is located the outer skeleton tooth cover portion of skeleton ring portion circumference by skeleton ring portion and cover, skeleton tooth cover portion and iron core tooth portion one-to-one and have the holding tank that is used for cooperating iron core tooth portion, is formed with the wire winding groove that steps down to the winding set between adjacent skeleton tooth cover portion, skeleton tooth cover portion axial tip extends in order to be formed with the locating plate that is located iron core tooth portion outer end axial side to the circumference outside, one side that stator core was kept away from to the locating plate is equipped with the stopper.
The limiting block is arranged to limit the winding coil wound on the iron core groove, so that the copper wire on the winding coil is prevented from moving outwards to avoid contacting with the outer rotor; meanwhile, the number of turns of the winding coil can be increased due to the arrangement of the limiting block, so that the output power of the motor is improved. The positioning plate enables the position of the limiting block to be farther away from the axis of the stator, and the number of turns of the winding coil can be increased.
Preferably, one surface of the limiting block, which is close to the axis of the stator core, is a limiting surface, the limiting surface is arranged in an inclined manner, the limiting surface gradually extends towards the circumferential outer side of the stator core along the parallel lines of the axis of the stator core, and one end, which is far away from the positioning plate, of the limiting surface is positioned at the outer side of the joint of the limiting surface and the positioning plate.
The inclined limiting surface can bear larger coil tension without deformation, so that the number of turns of the winding coil can be increased, and the output power of the motor can be improved.
Preferably, the stator frameworks at two axial ends of the stator core are formed by a plurality of framework monomers, the framework monomers are sleeved on the core tooth part to form an annular stator framework, and each framework monomer at least comprises a framework tooth sleeve part.
The stator framework is composed of the plurality of framework monomers, so that the manufacturing and processing are more convenient, the assembly between the framework monomers and the stator core is more convenient, and the condition that the stator core cannot be installed on the stator framework can be avoided. The above arrangement facilitates the tooling assembly of the present invention.
Preferably, each framework monomer at least comprises a three-framework gear sleeve part, and the shape and the size of each framework monomer are the same. The number of the framework monomers of the stator framework is reduced under the condition of reducing the processing difficulty, and the assembly time is shortened to improve the production efficiency.
Preferably, the central line of the limiting block along the radial direction of the stator core and the central line of the core tooth portion along the radial direction of the stator core are located on the same plane.
The arrangement enables the limiting blocks to bear larger tension of the winding coil, so that the number of turns of the winding coil can be increased, and the output power of the motor is improved.
Preferably, the surface of the limiting block, which is far away from the stator core, is a plane, and the middle part of the plane is concave to form a positioning hole. The Hall plate can be conveniently installed and arranged, and the Hall plate can be conveniently fixed at any position. Wherein, the locating hole all is used for cooperating fastening screw with the fixed orifices on the hall board.
Preferably, the framework gear sleeve part comprises an axial outer section and an axial inner section, and the axial outer section and the axial inner section form a step structure to form an abdicating groove for abdicating the insulation paper. When stator core is longer, install the stator skeleton of one side after, will buckle again and be the insulating paper of U-shaped and fill in the iron core inslot, carry out the installation of opposite side stator skeleton afterwards, it is spacing to carry out the both ends of insulating paper through the axial outer section of stator skeleton to realize insulating paper's fixed. The insulation paper has better fixing effect and can avoid the contact between the winding coil and the stator core as much as possible.
Preferably, the abdicating groove is positioned between the axial inner section and the outer wall of the iron core tooth part. When insulating paper, stator core and stator skeleton cooperate, insulating paper is located a stator skeleton's the inslot of stepping down respectively along stator core axial both ends, and insulating paper is buckled simultaneously and is the U-shaped and restricted between axial inner segment and iron core tooth portion outer wall, and insulating paper is restricted between the outside section of diaxon. The insulation paper fixing effect is better, the winding coil can be prevented from being wound, the insulation paper is driven to move, and the winding coil can be prevented from contacting with the stator core as far as possible.
Preferably, the stator core inner hole and the fixing part on the end cover are formed with mutually matched positioning structures, and each positioning structure comprises a positioning groove and a positioning bulge penetrating into the positioning groove. The stator core and the end cover are convenient to position and fix, and the Hall plate and the Hall are convenient to arrange.
Preferably, an abdicating space is formed between adjacent positioning plates of the stator framework. The abdicating space is used for abdicating the Hall, so that the Hall can conveniently stretch into the notch of the iron core groove, and the Hall positioning is more accurate.
The invention has the advantages of improving the output power of the outer rotor motor, having better insulation effect and being convenient for processing and assembling.
Drawings
FIG. 1 is a schematic view of a viewing angle of the present invention;
FIG. 2 is a schematic structural diagram of a perspective view of a skeletal monomer of the present invention;
FIG. 3 is a schematic view of another embodiment of the backbone monomer of the present invention
FIG. 4 is a schematic view of another embodiment of the present invention;
fig. 5 is a schematic structural diagram of the abdicating groove of the present invention.
Detailed Description
The invention is further described below with reference to the figures and specific embodiments.
As shown in fig. 1 to 4, the stator assembly of the external rotor motor of the present invention includes a stator core 1 and stator frames 2 disposed at two axial ends of the stator core, the stator core 1 includes an iron core ring portion and an iron core tooth portion 11 located at a circumferential outer side of the iron core ring portion, each stator frame 2 is composed of a frame ring portion 21 and a frame tooth sleeve portion 22 sleeved outside the iron core tooth portion 11 and located at a circumferential outer side of the frame ring portion 21, the frame tooth sleeve portions 22 correspond to the iron core tooth portion 11 one to one and have accommodating grooves 23 for matching the iron core tooth portion 11, winding grooves 24 giving way to windings are formed between adjacent frame tooth sleeve portions 22, axial end portions of the frame tooth sleeve portions 22 extend to the circumferential outer side to form positioning plates 25 located at axial sides of outer ends of the iron core tooth portions 11, and one side of the positioning plates 25 away from the stator core 1 is.
Wherein, the fixed part on 1 hole of stator core and the end cover is formed with the location structure of mutually supporting, and location structure includes the constant head tank and goes deep into the location arch 12 of constant head tank, and location arch 12 sets up in 1 interior edge department of stator core. Wherein, an abdicating space 27 is formed between the adjacent positioning plates 25 of the stator frame 2.
The one side that stopper 26 is close to stator core 1 axis is spacing face 261, and spacing face 261 slope sets up, and spacing face 261 extends to stator core 1 circumference outside along the parallel lines of 1 axis of stator core gradually, and the one end that locating plate 25 was kept away from to spacing face 261 is located the outside of spacing face 261 and locating plate 25 junction. The central line of the limiting block 26 along the radial direction of the stator core 1 and the central line of the core tooth part 11 along the radial direction of the stator core 1 are located on the same plane. The surface of the stopper 26 away from the stator core 1 is a plane 262, and the middle of the plane 262 is recessed to form a positioning hole 263.
As shown in fig. 2, 3 and 5, the skeleton gear sleeve portion 22 is composed of an axially outer section 221 and an axially inner section 222, and the axially outer section 221 and the axially inner section 22 form a step structure to form an abdicating groove 28 abdicating the insulation paper. The relief groove 28 is located between the axially inner section 222 and the outer wall of the core teeth 11. When the insulation paper, the stator core 1 and the stator frame 2 are matched, two ends of the insulation paper along the axial direction of the stator core 1 are respectively positioned in the abdicating groove 28 of the stator frame 2, meanwhile, the insulation paper is bent into a U shape and limited between the axial inner section 222 and the outer wall of the core tooth part 11, and the insulation paper is limited between the two axial outer sections 221.
The invention has the advantages of improving the output power of the outer rotor motor, having better insulation effect and being convenient for processing and assembling.
Claims (10)
1. The utility model provides an external rotor electric machine's stator module, its characterized in that includes stator core and sets up the stator skeleton at stator core axial both ends, stator core includes iron core ring portion and is located the iron core tooth portion in iron core ring portion circumference outside, stator skeleton establishes outside iron core tooth portion and is located the outer skeleton tooth cover portion of skeleton ring portion circumference by skeleton ring portion and cover and constitutes, skeleton tooth cover portion and iron core tooth portion one-to-one and have the holding tank that is used for cooperating iron core tooth portion, is formed with the wire winding groove that steps down to the winding between adjacent skeleton tooth cover portion, skeleton tooth cover portion axial tip extends in order to be formed with the locating plate that is located iron core tooth portion outer end axial side to the circumference outside, one side that stator core was kept away from to the locating plate is equipped with.
2. The stator assembly of the external rotor electric machine according to claim 1, wherein one surface of the limiting block close to the axis of the stator core is a limiting surface, the limiting surface is arranged obliquely, the limiting surface gradually extends to the circumferential outer side of the stator core along the parallel line of the axis of the stator core, and one end of the limiting surface, which is far away from the positioning plate, is located at the outer side of the joint of the limiting surface and the positioning plate.
3. The stator assembly of an external rotor electric machine according to claim 1, wherein the stator frames at both axial ends of the stator core are each formed by a plurality of frame units, the plurality of frame units are sleeved on the core teeth to form the annular stator frame, and each frame unit at least comprises a frame tooth sleeve portion.
4. The stator assembly of an external rotor electric machine according to claim 3, wherein each of the skeleton units includes at least a three-skeleton sleeve portion, and each of the skeleton units has the same shape and size.
5. The stator assembly of an external rotor electric machine according to claim 1 or 3, wherein the center line of the stopper in the radial direction of the stator core is on the same plane as the center line of the core teeth in the radial direction of the stator core.
6. The stator assembly of an external rotor electric machine according to claim 5, wherein the surface of the limiting block away from the stator core is a plane, and the middle of the plane is concave to form a positioning hole.
7. The stator assembly of an external rotor electric machine according to claim 1, wherein the bobbin pocket part is formed of an axially outer section and an axially inner section, the axially outer section and the axially inner section forming a stepped structure to form a recess groove for recess of insulation paper.
8. The stator assembly of an external rotor electric machine according to claim 7, wherein the relief groove is located between the axially inner section and the outer wall of the core teeth.
9. The stator assembly of an external rotor electric machine as claimed in claim 1, wherein the inner hole of the stator core and the fixing portion of the end cap are formed with a positioning structure, the positioning structure comprises a positioning groove and a positioning protrusion extending into the positioning groove.
10. The stator assembly of an external rotor electric machine according to claim 1, wherein a relief space is formed between adjacent positioning plates of the stator frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010388316.8A CN111404294A (en) | 2020-05-09 | 2020-05-09 | Stator assembly of external rotor motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010388316.8A CN111404294A (en) | 2020-05-09 | 2020-05-09 | Stator assembly of external rotor motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111404294A true CN111404294A (en) | 2020-07-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010388316.8A Pending CN111404294A (en) | 2020-05-09 | 2020-05-09 | Stator assembly of external rotor motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111404294A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113364230A (en) * | 2021-06-22 | 2021-09-07 | 台州普宇智能科技有限公司 | Motor core assembly combination equipment |
| CN113890241A (en) * | 2021-09-27 | 2022-01-04 | 珠海格力电器股份有限公司 | Skeleton assembly, winding method thereof and motor |
| CN114123564A (en) * | 2021-10-28 | 2022-03-01 | 惠而浦（中国）股份有限公司 | Insulating skeleton and motor |
-
2020
- 2020-05-09 CN CN202010388316.8A patent/CN111404294A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113364230A (en) * | 2021-06-22 | 2021-09-07 | 台州普宇智能科技有限公司 | Motor core assembly combination equipment |
| CN113890241A (en) * | 2021-09-27 | 2022-01-04 | 珠海格力电器股份有限公司 | Skeleton assembly, winding method thereof and motor |
| CN114123564A (en) * | 2021-10-28 | 2022-03-01 | 惠而浦（中国）股份有限公司 | Insulating skeleton and motor |
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