CN110289713A - A kind of improvement structure of external stator core - Google Patents
A kind of improvement structure of external stator core Download PDFInfo
- Publication number
- CN110289713A CN110289713A CN201910614880.4A CN201910614880A CN110289713A CN 110289713 A CN110289713 A CN 110289713A CN 201910614880 A CN201910614880 A CN 201910614880A CN 110289713 A CN110289713 A CN 110289713A
- Authority
- CN
- China
- Prior art keywords
- stator core
- external stator
- cylindrical surface
- sawtooth
- casing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000004080 punching Methods 0.000 claims abstract description 12
- 238000003780 insertion Methods 0.000 claims abstract description 6
- 230000037431 insertion Effects 0.000 claims abstract description 6
- 238000010030 laminating Methods 0.000 claims abstract description 3
- 238000009434 installation Methods 0.000 claims 1
- 238000000034 method Methods 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
Classifications
-
- 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
- H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
- H02K1/185—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures to outer stators
Abstract
A kind of improvement structure of external stator core, external stator core including circular ring shape, casing is constituted, external stator core is mounted on casing internal, be characterized in that: external stator core is made of the punching of several circular ring shapes overlapped together, stator punching is divided into cooperation section and toothed segment, cooperation section lateral wall is cylindrical surface, toothed segment lateral wall is made of the sawtooth of several tooth slot structures, sawtooth tooth top is higher by cylindrical surface, several punchings are formed the external stator core of spline structure after laminating, it is close to casing inner wall on the cylindrical surface of external stator core, external stator core sawtooth is higher by the tooth insertion casing inner wall of cylindrical surface portion.The present invention is compared with the prior art.It is simple with structure, at low cost, overload capacity is strong, the advantages of requirement motor case wall thickness and stator core yoke portion height.
Description
Technical field
The present invention and motor technology.
Background technique
Electrical power run when, rotor all can by the effect of electromagnetic force, so, any motor, to prevent stator
Displacement so that motor damage, so, it is necessary to stator core and casing are fixed, the method for general fixed stator iron core
There are several types of:
1. scheme one: stator core outer circle and casing hold stator core, the technical solution tightly by stiction using being interference fitted
Commonly used in common compact motor, when needing to bear several times overload torque, this method is not applicable；
2. scheme two: other than iron core outer circle and casing interference fit, holding screw is inlayed also between casing and stator core,
See that Fig. 4, holding screw have certain shear resistance, can further decrease the risk of stator displacement, the problem is that: tightening
Screw has certain screwing length, and casing wall thickness and stator core yoke portion height there are certain requirements, increased costs；
Scheme three: using key connection between casing and stator core, because key connection has biggish shear resistance, it is possible to
Bear biggish overload torque, motor in electric automobile generallys use the program, see Fig. 5, there are the problem of it is similar with scheme 2: by
In to process keyway on casing, casing wall thickness and stator core yoke portion height be there are certain requirements, and process inconvenience, at high cost.
Summary of the invention
Goal of the invention of the invention is to provide that a kind of structure is simple, at low cost, overload capacity is strong, to motor case wall thickness
The improvement structure for the external stator core not required with stator core yoke portion height.
The present invention is implemented as follows: including the external stator core of circular ring shape, casing composition, external stator core is mounted on machine
Inside shell, be characterized in that: external stator core is made of the punching of several circular ring shapes overlapped together, and stator punching is divided into cooperation
Section and toothed segment, cooperation section lateral wall are cylindrical surface, and toothed segment lateral wall is made of the sawtooth of several tooth slot structures, sawtooth tooth top
Be higher by cylindrical surface, several punchings are formed the external stator core of spline structure after laminating, the cylindrical surface of external stator core with
Casing inner wall is close to, and external stator core sawtooth is higher by the tooth insertion casing inner wall of cylindrical surface portion.
To consider that equalising torque, sawtooth segment number are 2 sections or more, and it is equal along the circumferencial direction of external stator core lateral wall
Even distribution.
Working principle
Stator core enters casing and generallys use hot jacket method, expands after casing is heated, and stator core is easy into casing, cold
But back cabinet shrinks internal diameter and reduces, and casing inner wall holds stator core cylindrical surface tightly, and stator core toothed segment is higher by cylindrical surface
Sawtooth is embedded in casing entity, realizes the positioning of stator core cylindrical surface, guarantees that stator core inner hole and casing inner hole are concentric after assembling,
It is not in relative displacement that sawtooth insertion casing entity can bear high torque again.
Beneficial effect
1. the casing wall thickness and stator core yoke portion height with iron core cooperation can be without architectural limitation, the cost of material is low；
2. not needing processing keyway with the casing of iron core cooperation or set screw hole, processing cost being low；
3. assembly back cabinet inner wall is close to guarantee that casing inner hole and iron core inner hole are concentric with stator core cylindrical surface, structure letter
It is single, it is easy to assembly.
Detailed description of the invention
Attached Fig. 1 the structural representation of present invention；
Attached drawing 2 is the partial enlarged view of attached drawing 1A；
Attached drawing 3 is the structural schematic diagram of stator core sawtooth insertion casing entity of the invention；
Attached drawing 4 is that traditional structure uses the structural schematic diagram that holding screw is inlayed between casing and stator core；
Attached drawing 5 is traditional structure using the structural schematic diagram for using key connection between casing and stator core.
Figure number explanation:
Casing 1, external stator core 2, stator core cylindrical surface 21, stator core toothed segment 22, stator core yoke portion 23, sawtooth
24。
Specific embodiment
Now in conjunction with drawings and examples, present invention is further described in detail:
As shown in Figure 1, 2, 3, the present invention includes external stator core 2,1 structure of casing of the circular ring shape with stator core yoke portion 23
At, external stator core 2 is mounted on inside casing 1, and be characterized in that: external stator core 2 is made of several punchings overlapped together,
Stator punching is divided into cooperation section 21 and toothed segment 22, and cooperation 21 lateral wall of section is cylindrical surface, and 22 lateral wall of toothed segment is by several teeth
The sawtooth 24 of slot structure forms, and the height h that 24 tooth top of sawtooth is higher by cylindrical surface is 0.04-0.2mm, several punchings laminate after just
The external stator core 2 of spline structure is formd, the cylindrical surface of external stator core 2 is close to 1 inner wall of casing, external stator core 2
Sawtooth 24 is higher by tooth insertion 1 inner wall of casing of cylindrical surface portion.
22 quantity of toothed segment is 2 sections or more, and is uniformly distributed along the lateral wall circumferencial direction of external stator core 2.
Claims (2)
1. a kind of improvement structure of external stator core, external stator core, casing including circular ring shape are constituted, external stator core installation
In casing internal, be characterized in that: external stator core is made of the punching of several circular ring shapes overlapped together, and stator punching is divided into
Cooperate section and toothed segment, cooperation section lateral wall is cylindrical surface, and toothed segment lateral wall is made of the sawtooth of several tooth slot structures, sawtooth
Tooth top is higher by cylindrical surface, and several punchings are formed the external stator core of spline structure, the cylinder of external stator core after laminating
Face is close to casing inner wall, and external stator core sawtooth is higher by the tooth insertion casing inner wall of cylindrical surface portion.
2. the improvement structure of external stator core according to claim 1, it is characterised in that sawtooth segment number is 2 sections or more,
And the circumferencial direction along external stator core lateral wall is uniformly distributed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910614880.4A CN110289713A (en) | 2019-07-09 | 2019-07-09 | A kind of improvement structure of external stator core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910614880.4A CN110289713A (en) | 2019-07-09 | 2019-07-09 | A kind of improvement structure of external stator core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110289713A true CN110289713A (en) | 2019-09-27 |
Family
ID=68021097
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910614880.4A Pending CN110289713A (en) | 2019-07-09 | 2019-07-09 | A kind of improvement structure of external stator core |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110289713A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202957672U (en) * | 2012-10-26 | 2013-05-29 | 比亚迪股份有限公司 | Motor |
| CN203596670U (en) * | 2013-11-06 | 2014-05-14 | 珠海凯邦电机制造有限公司 | Stator punching sheet, stator iron core and motor |
| CN206099679U (en) * | 2015-09-21 | 2017-04-12 | 现代摩比斯株式会社 | Motor housing and stator core fixed knot construct |
| CN109560625A (en) * | 2019-01-23 | 2019-04-02 | 宁波菲仕自动化技术有限公司 | A kind of split-type stator core installation fixed structure and fixing means |
| CN209913591U (en) * | 2019-07-09 | 2020-01-07 | 合普动力股份有限公司 | Improved structure of outer stator core |
-
2019
- 2019-07-09 CN CN201910614880.4A patent/CN110289713A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202957672U (en) * | 2012-10-26 | 2013-05-29 | 比亚迪股份有限公司 | Motor |
| CN203596670U (en) * | 2013-11-06 | 2014-05-14 | 珠海凯邦电机制造有限公司 | Stator punching sheet, stator iron core and motor |
| CN206099679U (en) * | 2015-09-21 | 2017-04-12 | 现代摩比斯株式会社 | Motor housing and stator core fixed knot construct |
| CN109560625A (en) * | 2019-01-23 | 2019-04-02 | 宁波菲仕自动化技术有限公司 | A kind of split-type stator core installation fixed structure and fixing means |
| CN209913591U (en) * | 2019-07-09 | 2020-01-07 | 合普动力股份有限公司 | Improved structure of outer stator core |
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