CN202475049U - Low cogging torque motor stator - Google Patents
Low cogging torque motor stator Download PDFInfo
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- CN202475049U CN202475049U CN2012200769759U CN201220076975U CN202475049U CN 202475049 U CN202475049 U CN 202475049U CN 2012200769759 U CN2012200769759 U CN 2012200769759U CN 201220076975 U CN201220076975 U CN 201220076975U CN 202475049 U CN202475049 U CN 202475049U
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Abstract
The utility model relates to a low cogging torque motor stator which comprises a stator iron core and a stator coil, wherein a plurality of stator teeth distributed at intervals extend from the inner circumference of the stator iron core integrally, tail ends of the stator teeth are provided with pole shoes, a stator slot is arranged between every two adjacent stator teeth, the stator coil is arranged in the stator slots, one or more steps are arranged on the side surfaces of two sides of each pole shoe, and the steps are correspondingly matched with the steps on the adjacent pole shoes to form bent notches. According to the low cogging torque motor stator, basic properties of the motor are met and the cogging torque is greatly lowered.
Description
Technical field
The utility model relates to a kind of Low gullet torque motor stator, belongs to the direct current brushless permanent magnet machine field.
Background technology
Compare with induction machine; The direct current brushless permanent magnet motor has good controllability, and big starting torque, and low speed directly drives; Characteristics such as high power factor and density; But its cogging torque is the intrinsic deficiency of direct current brushless permanent magnet motor greatly always, and cogging torque is under the cold situation of armature winding, the torque that is produced in a circumferential direction by the teeth groove interaction of magnetic field of permanent magnet and armature core.Cogging torque usually becomes and causes that motor oscillating, noise and restriction improve the fundamental cause of control precision, and particularly when the cogging torque frequency is consistent with the mechanical resonance frequency of stator or rotor, vibration and noise that cogging torque produces will be exaggerated.Tradition is existing more about reducing the method for cogging torque; Mainly by the mark channel process, reduce width of rebate, increase air gap flux density, improve the air-gap field distribution, skewed slot, the tiltedly utmost point or magnetic pole segmentation dislocation etc.; Though these methods all have certain effect to reducing cogging torque; But because these all for a change electromagnetism or dimensional parameters, the effect that reduces cogging torque is limited, can not satisfy actual requirement.
Also have at present multinomial open about the technology that reduces cogging torque; A kind of dc brushless motor stator and rotor device of Low gullet torque is disclosed for the Chinese patent of CN201781395U like Granted publication number; Be made up of stator core, magnetic pole of the stator, magnetic shoe, armature spindle and rotor, the centre of stator core has the endoporus of device rotor, around this endoporus, has the teeth groove more than at least three; Each teeth groove forms a magnetic pole of the stator, and the width of per two adjacent magnetic pole of the stator does not wait.Though the method has certain effect on the elimination cogging torque, manufacturing process is complicated, and because its complicated structure causes the motor key property to be difficult to satisfy actual requirement.
Therefore, seek a kind of Low gullet torque motor is direct current brushless permanent magnet machine field technical barrier anxious to be solved always.
Summary of the invention
The technical problem that the utility model will solve provides a kind of Low gullet torque motor stator, when satisfying the motor key property, reduces cogging torque greatly.
The technical scheme of the utility model is:
A kind of Low gullet torque motor stator comprises stator core, stator coil, and wherein: stator core inner periphery one is extended a plurality of stator tooths spaced apart; The stator tooth end is provided with pole shoe; Form stator slot between each adjacent stators tooth, stator coil places in the stator slot, and described each side, pole shoe both sides is equipped with several steps more than 1 or 1; Described step is adjacent the step corresponding matching on the pole shoe, forms the notch of bending shape.
Preferably, the height of the step of described corresponding matching is unequal.
Preferably, described stator core is provided with insulation framework, and described stator coil places in the stator slot and through insulation framework the stator coil embedding obtained on stator tooth.The described insulation framework of the utility model is used to guarantee the insulation between stator coil and the stator core.In order to improve insulation effect, the described insulation framework of the utility model can comprise insulation framework and following insulation framework composition, can adopt other modes to insulate certainly.
Preferably, described stator core is overrided to form by stator punching, and stator punching inner periphery one is extended a plurality of stator tooths spaced apart, and the stator tooth end is provided with pole shoe, and described step is to laminate the back by the stator punching with different width of pole shoes to form.
Preferably, in order to simplify the stator coil wire winding, submit the copper factor of stator coil simultaneously to, described stator comprises several stator units, and through being spliced, the stator unit both sides are equipped with splicing construction between stator unit and the stator unit.Preferably, stablize in order to make to cooperate between the stator unit, described splicing construction is meant that stator unit one side is provided with the convexity that is adjacent the stator unit splicing, and opposite side is provided with the groove that is adjacent the stator unit splicing.
Preferably; Described stator unit comprises stator core unit, stator coil unit, and stator core unit inner periphery one is extended 1 or a plurality of stator tooths spaced apart, and the stator tooth end is provided with pole shoe; Form stator slot between each adjacent stators tooth, the stator coil unit places in the stator slot.Preferably, described splicing construction is meant that stator core unit one side is provided with the convexity of splicing with the adjacent stators iron core unit, and opposite side is provided with the groove with the splicing of adjacent stators iron core unit.Preferably, described stator core unit is provided with the insulation framework unit, and described stator coil unit places in the stator slot and through the insulation framework unit embedding of stator coil unit obtained on stator tooth.
Preferably; Described stator core unit is overrided to form by the stator punching unit; Stator punching unit inner periphery one is extended 1 or a plurality of stator tooths spaced apart, and the stator tooth end is provided with pole shoe, and described step is to laminate the back by the stator punching unit with different width of pole shoes to form.
A kind of assembly method of Low gullet torque motor stator, wherein: its operating procedure is:
The stator punching that (1) will have different width of pole shoes laminates into the stator core that the side, both sides has several steps more than 1 or 1, and described step is adjacent the step corresponding matching on the pole shoe, forms the notch of bending shape;
(2) stator coil is arranged in the stator slot, accomplishes the stator assembling.
Preferably, a kind of assembly method of Low gullet torque motor stator, wherein: its operating procedure is:
The stator punching unit that (1) will have different width of pole shoes laminates into the stator core unit that the side, both sides has several steps more than 1 or 1, and described step is adjacent the step corresponding matching on the pole shoe, forms the notch of bending shape;
(2) the stator coil unit is arranged on obtains stator unit in the stator slot;
(3) stator unit and stator unit are spliced obtain stator, accomplish the stator assembling.
Preferably, before (2) step, increase step: insulation framework is installed, the stator coil embedding is realized stator coil is arranged in the stator slot on stator tooth through insulation framework on stator core.
Preferably, before (2) step, increase step: the insulation framework unit is installed on the stator core unit; Through the insulation framework unit embedding of stator coil unit is realized the stator coil unit is arranged in the stator slot on stator tooth.
The utlity model has following advantage:
1. through being equipped with several steps more than 1 or 1 in side, pole shoe both sides; Described step is adjacent the step corresponding matching on the pole shoe; Form the notch of bending shape, when not influencing the motor key property, greatly eliminated cogging torque; Compare with the motor of routine, cogging torque can reduce by 20% at least;
2. adopt the spliced stator of stator unit, not only greatly made things convenient for winding process, simultaneously the copper factor of stator coil can reach 90% or more than; The spliced stator structure of stator unit makes stator rabbet can realize little notch design in addition; Eliminating the effect that approaches existing no notch motor stator on the teeth groove effect; But with respect to existing no notch motor stator; The manufacturing process of the utility model is simple, and low cost of manufacture is highly suitable in the production and applies.
Description of drawings
Accompanying drawing 1 is the structural representation of a kind of embodiment of the utility model;
Accompanying drawing 2 is part decomposition texture sketch mapes of accompanying drawing 1;
Accompanying drawing 3 is stator core construction sketch mapes of accompanying drawing 1;
Accompanying drawing 4 is structural representations of stator unit in the accompanying drawing 2;
Accompanying drawing 5 is structural representations of stator core unit in the accompanying drawing 4;
Accompanying drawing 6 is A place structural representations in the accompanying drawing 2;
Accompanying drawing 7 is B place structural representations in the accompanying drawing 2;
Accompanying drawing 8 is C place structural representations in the accompanying drawing 3;
Reference numeral: stator core 100, stator coil 200, insulation framework 300, stator tooth 110, pole shoe 120, stator slot 130, step 121, notch 131, stator punching 111,111-1,111-2, stator core unit 100a, stator coil unit 200a, insulation framework unit 300a, stator punching unit 111a, 111a-1,111a-2, groove 112, protruding 113.
Embodiment
Embodiment 1, a kind of Low gullet torque motor stator; Comprise stator core 100, stator coil 200; Wherein: stator core 100 inner periphery one are extended a plurality of stator tooths 110 spaced apart, and stator tooth 110 ends are provided with pole shoe 120, form stator slot 130 between each adjacent stators tooth 110; Stator coil 200 places in the stator slot 130; Described each side, pole shoe 120 both sides is equipped with 1 step 121, and described step 121 is adjacent step 121 corresponding matching on the pole shoe 120, forms the notch 131 of bending shape.
Embodiment 2, a kind of Low gullet torque motor stator; Comprise stator core 100, stator coil 200; Wherein: described each side, pole shoe 120 both sides is equipped with 2 steps spaced apart 121; Described step 121 is adjacent step 121 corresponding matching on the pole shoe 120, forms the notch 131 of bending shape, and all the other are with embodiment 1.
Embodiment 3, a kind of Low gullet torque motor stator; Comprise stator core 100, stator coil 200; Wherein: described each side, pole shoe 120 both sides is equipped with 3 steps spaced apart 121; Described step 121 is adjacent step 121 corresponding matching on the pole shoe 120, forms the notch 131 of bending shape, and all the other are with embodiment 1.
Embodiment 4, a kind of Low gullet torque motor stator; Comprise stator core 100, stator coil 200; Wherein: described each side, pole shoe 120 both sides is equipped with 4 steps spaced apart 121; Described step 121 is adjacent step 121 corresponding matching on the pole shoe 120, forms the notch 131 of bending shape, and all the other are with embodiment 1.
Embodiment 5, a kind of Low gullet torque motor stator; Comprise stator core 100, stator coil 200; Wherein: described each side, pole shoe 120 both sides is equipped with 5 steps spaced apart 121; Described step 121 is adjacent step 121 corresponding matching on the pole shoe 120, forms the notch 131 of bending shape, and all the other are with embodiment 1.
Embodiment 6, a kind of Low gullet torque motor stator, wherein: the height of the step 121 of described corresponding matching is unequal, and all the other are with any one embodiment among the embodiment 1-5.
Embodiment 7, a kind of Low gullet torque motor stator; Wherein: described stator core 100 is provided with insulation framework 300; Described stator coil 200 places in the stator slot 130 and through insulation framework 300 stator coil 200 embeddings is obtained on stator tooth 110, and all the other are with any one embodiment among the embodiment 1-6.
Embodiment 8, a kind of Low gullet torque motor stator; Wherein: described stator core 100 is overrided to form by stator punching 111; Stator punching 111 inner periphery one are extended a plurality of stator tooths 110 spaced apart; Stator tooth 110 ends are provided with pole shoe 120, and described step 121 is to laminate the back by stator punching 111-1,111-2 with different width of pole shoes to form, and all the other are with any one embodiment among the embodiment 1-7.
Embodiment 9, a kind of Low gullet torque motor stator; Wherein: described stator comprises several stator units; Through being spliced, the stator unit both sides are equipped with splicing construction between stator unit and the stator unit, and described splicing construction is meant that stator unit one side is provided with the convexity 113 that is adjacent the stator unit splicing; Opposite side is provided with the groove 112 that is adjacent the stator unit splicing, and all the other are with any one embodiment among the embodiment 1-8.
Embodiment 10, a kind of Low gullet torque motor stator; Wherein: described stator unit comprises stator core unit 100a, stator coil unit 200a; Stator core unit 100a inner periphery one is extended 1 stator tooth 110, and stator tooth 110 ends are provided with pole shoe 120, forms stator slot 130 between each adjacent stators tooth 110; Stator coil unit 200a places in the stator slot 130, and all the other are with embodiment 9.
Embodiment 11, a kind of Low gullet torque motor stator, wherein: described stator core unit 100a inner periphery one is extended 2 stator tooths spaced apart 110, and all the other are with embodiment 10.
Embodiment 12, a kind of Low gullet torque motor stator; Wherein: described splicing construction is meant that stator core unit 100a one side is provided with the convexity 113 of splicing with adjacent stators iron core unit 100a; Opposite side is provided with the groove 112 with adjacent stators iron core unit 100a splicing, and all the other are with embodiment 10 or embodiment 11.
Embodiment 13, a kind of Low gullet torque motor stator; Wherein: described stator core unit 100a is provided with insulation framework unit 300a; Described stator coil unit 200a places in the stator slot 130 and through insulation framework unit 300a the 200a embedding of stator coil unit is obtained on stator tooth 110, and all the other are with embodiment 10 or embodiment 11 or embodiment 12.
Embodiment 14, a kind of Low gullet torque motor stator; Wherein: described stator core unit 100a is overrided to form by stator punching unit 111a; Stator punching unit 111a inner periphery one is extended 1 stator tooth 110; Stator tooth 110 ends are provided with pole shoe 120, and described step 121 is to laminate the back by stator punching unit 111a-1,111a-2 with different width of pole shoes to form, and all the other are with any one embodiment among the embodiment 10-13.
Embodiment 15, a kind of Low gullet torque motor stator, wherein: described stator punching unit 111a inner periphery one is extended 2 stator tooths spaced apart 110, and all the other are with embodiment 14.
The assembly method of embodiment 16, a kind of Low gullet torque motor stator, wherein: its operating procedure is:
The stator punching 111 that (1) will have different width of pole shoes laminates into the stator core 100 that the side, both sides has several steps 121 more than 1 or 1; Described step 121 is adjacent step 121 corresponding matching on the pole shoe 120, forms the notch 131 of bending shape;
(2) stator coil 200 is arranged in the stator slot 130, accomplishes the stator assembling.All the other are with any one embodiment among the embodiment 1-15.
The assembly method of embodiment 17, a kind of Low gullet torque motor stator, wherein: its operating procedure is:
The stator punching unit 111a that (1) will have different width of pole shoes laminates into the stator core unit 100a that the side, both sides has several steps more than 1 or 1; Described step 121 is adjacent step 121 corresponding matching on the pole shoe 120, forms the notch 131 of bending shape;
(2) stator coil unit 200a is arranged in the stator slot 130 obtains stator unit;
(3) stator unit and stator unit are spliced obtain stator, accomplish the stator assembling.All the other are with embodiment 16.
The assembly method of embodiment 18, a kind of Low gullet torque motor stator; Wherein: before (2) step, increase step: insulation framework 300 is installed on stator core 100; Through insulation framework 300 stator coil 200 embeddings are realized stator coil 200 is arranged in the stator slot 130 on stator tooth 110, all the other are with embodiment 16.
The assembly method of embodiment 19, a kind of Low gullet torque motor stator; Wherein: before (2) step, increase step: insulation framework unit 300a is installed on stator core unit 100a, the 200a embedding of stator coil unit is realized stator coil unit 200a is arranged in the stator slot 130 on stator tooth 110 through insulation framework unit 300a.All the other are with embodiment 17.
The utility model is not limited to above-mentioned concrete embodiment, and its also has a lot of the variation or remodeling, like the variation of step or stator tooth number etc., does not break away from the connotation and the scope of the utility model, all belongs to the protection range of the utility model.
Claims (7)
1. Low gullet torque motor stator; Comprise stator core (100), stator coil (200); It is characterized in that: stator core (100) inner periphery one is extended a plurality of stator tooths (110) spaced apart, and stator tooth (110) end is provided with pole shoe (120), forms stator slot (130) between each adjacent stators tooth (110); Stator coil (200) places in the stator slot (130); Described each pole shoe (120) side, both sides is equipped with several steps (121) more than 1 or 1, and described step (121) is adjacent step (121) corresponding matching on the pole shoe (120), forms the notch (131) of bending shape.
2. a kind of Low gullet torque motor stator as claimed in claim 1 is characterized in that: the height of the step of described corresponding matching (121) is unequal.
3. according to claim 1 or claim 2 a kind of Low gullet torque motor stator; It is characterized in that: described stator core (100) is provided with insulation framework (300), and described stator coil (200) places in the stator slot (130) and through insulation framework (300) stator coil (200) embedding obtained on stator tooth (110).
4. according to claim 1 or claim 2 a kind of Low gullet torque motor stator; It is characterized in that: described stator core (100) is overrided to form by stator punching (111); Stator punching (111) inner periphery one is extended a plurality of stator tooths (110) spaced apart; Stator tooth (110) end is provided with pole shoe (120), and described step (121) is to laminate the back by the stator punching with different width of pole shoes (111-1,111-2) to form.
5. according to claim 1 or claim 2 a kind of Low gullet torque motor stator, it is characterized in that: described stator comprises several stator units, through being spliced, the stator unit both sides are equipped with splicing construction between stator unit and the stator unit.
6. a kind of Low gullet torque motor stator as claimed in claim 5; It is characterized in that: described stator unit comprises stator core unit (100a), stator coil unit (200a); Stator core unit (100a) inner periphery one is extended 1 or a plurality of stator tooths (110) spaced apart; Stator tooth (110) end is provided with pole shoe (120), forms stator slot (130) between each adjacent stators tooth (110), and stator coil unit (200a) places in the stator slot (130).
7. a kind of Low gullet torque motor stator as claimed in claim 6; It is characterized in that: described stator core unit (100a) is overrided to form by stator punching unit (111a); Stator punching unit (111a) inner periphery one is extended 1 or a plurality of stator tooths (110) spaced apart; Stator tooth (110) end is provided with pole shoe (120), and described step (121) is to laminate the back by the stator punching unit with different width of pole shoes (111a-1,111a-2) to form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200769759U CN202475049U (en) | 2012-03-03 | 2012-03-03 | Low cogging torque motor stator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200769759U CN202475049U (en) | 2012-03-03 | 2012-03-03 | Low cogging torque motor stator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202475049U true CN202475049U (en) | 2012-10-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200769759U Expired - Fee Related CN202475049U (en) | 2012-03-03 | 2012-03-03 | Low cogging torque motor stator |
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| CN (1) | CN202475049U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102545416A (en) * | 2012-03-03 | 2012-07-04 | 常州新亚电机有限公司 | Low-cogging-torque motor stator and assembling method thereof |
| CN103647360A (en) * | 2013-07-03 | 2014-03-19 | 锦州汉拿电机有限公司 | Motor outer stator and manufacturing process thereof |
| CN108233562A (en) * | 2016-12-15 | 2018-06-29 | 姚常勤 | A kind of motor stator module, motor stator and radial flux motors |
-
2012
- 2012-03-03 CN CN2012200769759U patent/CN202475049U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102545416A (en) * | 2012-03-03 | 2012-07-04 | 常州新亚电机有限公司 | Low-cogging-torque motor stator and assembling method thereof |
| WO2013131223A1 (en) * | 2012-03-03 | 2013-09-12 | 常州亚通杰威电机有限公司 | Low cogging torque motor stator, and assembly method therefor |
| CN103647360A (en) * | 2013-07-03 | 2014-03-19 | 锦州汉拿电机有限公司 | Motor outer stator and manufacturing process thereof |
| CN108233562A (en) * | 2016-12-15 | 2018-06-29 | 姚常勤 | A kind of motor stator module, motor stator and radial flux motors |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121003 Termination date: 20180303 |