CN203406688U - Small electric fan motor - Google Patents
Small electric fan motor Download PDFInfo
- Publication number
- CN203406688U CN203406688U CN201320512674.0U CN201320512674U CN203406688U CN 203406688 U CN203406688 U CN 203406688U CN 201320512674 U CN201320512674 U CN 201320512674U CN 203406688 U CN203406688 U CN 203406688U
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- CN
- China
- Prior art keywords
- stator core
- bolt
- fan motor
- electric fan
- small electric
- 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.)
- Expired - Lifetime
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Abstract
A small electric fan motor comprises a stator core formed by laminating stator core punching sheets, a front end cover and a rear end cover, and bolts fixing the front end cover and the rear end cover to front and rear ends of the stator core, wherein the edges of the stator core punching sheets are respectively punched with installation holes for the bolts to pass through during motor assembly. The small electric fan motor is characterized in that the installation holes are omega-shaped open holes, spaces encircled by the omega shape are used for the bolts to pass through, and the two sides at each opening are connected with the outer edges of the stator core punching sheets. A mold adopting the design avoids the use of a punching pin for forming the installation holes, for the bolts to pass through, of the lamination core in traditional technologies. Therefore, the small electric fan motor has high strength and a long service life.
Description
Technical field
The design relates to a kind of small electric fan motor, relates in particular to the stator core stamping sheet of this motor, and in International Patent Classification (IPC), classification can belong to H02K15/085.
Background technology
The basic structure of small electric fan motor as shown in Figure 1, comprising:
---the stator core 3 being overrided to form by stator core stamping sheet;
---front end housing 4 and rear end cap 2;
---bolt 1 is fixed on stator core 3 front and back two ends by front end housing 4 and rear end cap 2.
Conventional art is used stator core stamping sheet as shown in Figure 2, and this punching has near edge punching the installing hole that passes through laminated core when motor assembles for bolt.Because this hole is less, Lamination mould need be specifically designed to the red needle that forms this hole, and this red needle need have higher intensity, otherwise the life-span is shorter.
Summary of the invention
Technical problem to be solved by this invention is to propose a kind of small electric fan motor, improves problem described in background technology.
The technical scheme that the present invention solve the technical problem is that a kind of small electric fan motor, comprising:
---the stator core being overrided to form by stator core stamping sheet;
---front end housing and rear end cap;
---bolt is fixed on stator core front and back two ends by front end housing and rear end cap;
---in edge, punching has the installing hole passing through for described bolt when motor assembles to described stator core stamping sheet;
It is characterized in that: the open pore that this installing hole is " Ω " font, should for described bolt, pass through by " Ω " font enclosed space, opening part both sides connect the outer of described stator core stamping sheet.
Use the mould of this design to avoid using conventional art to pass through the red needle of the installing hole of laminated core for forming for bolt, thereby have higher intensity, the life-span is longer.
It is further designed to, and the A/F of described " Ω " font is less than the diameter of described bolt.This design is more conducive to described bolt and passes through location.
Being designed to of standard more: described " Ω " font is greater than the circular arc of 180 degree by a radian and the line to punching outer forms from the end points of this circular arc respectively; And the diameter of this circular arc is not less than the diameter of described bolt, the double-pointed distance of this circular arc is less than the diameter of described bolt.
Further specific design is: described stator core stamping sheet is square punching, described installing hole is 4, and is each positioned at a jiao in described square 4 jiaos, and described radian is 270 degree, described line is orthogonal two-lines section, and this two-lines section is respectively parallel with described square one side.
Accompanying drawing explanation
Fig. 1 is the basic structure schematic diagram of prior art and embodiment of the present invention fan motor;
Fig. 2 is prior art fan motor stator core stamping sheet profile schematic diagram;
Fig. 3 is embodiment of the present invention fan motor stator core stamping sheet profile schematic diagram.
Embodiment
Embodiment of the present invention fan motor basic structure as shown in Figure 1, comprising:
---the stator core 3 being overrided to form by stator core stamping sheet;
---front end housing 2 and rear end cap 4;
---the bolt that diameter is d is fixed on stator core 3 front and back two ends by front end housing 2 and rear end cap 4.
The profile of stator core stamping sheet as shown in Figure 3, for square punching, 4 installing holes are each positioned at a jiao in described square 4 jiaos, to be the circular arc of 270 degree and the open pore that two-lines section surrounds by a radian, this two-lines section is mutually vertical and respectively parallel with described square one side, till each starts to extend to described square outer by this circular arc one end points.The double-pointed distance A of this circular arc is less than the diameter d of described bolt, arc diameter
be greater than the diameter d of described bolt.
The present embodiment is optimal design, can make mould have the highest intensity.Yet enforcement of the present invention is not limited only to this, can optionally have some change.For example:
---the shape that described " Ω " font encloses the space of passing through for described bolt can be also the shape outside circular arc, as square or oval;
---opening part both sides can be also other curve outside straightway toward the connection of the outer of described stator core stamping sheet;
---installing hole can be more;
---the A/F of " Ω " font also can suitably be adjusted.
Claims (4)
1. a small electric fan motor, comprising:
---the stator core being overrided to form by stator core stamping sheet;
---front end housing and rear end cap;
---bolt is fixed on stator core front and back two ends by front end housing and rear end cap;
---in edge, punching has the installing hole passing through for described bolt when motor assembles to described stator core stamping sheet;
It is characterized in that: the open pore that this installing hole is " Ω " font, should for described bolt, pass through by " Ω " font enclosed space, opening part both sides connect the outer of described stator core stamping sheet.
2. according to motor described in claim 1, it is characterized in that: the A/F of described " Ω " font is less than the diameter of described bolt.
3. according to motor described in claim 2, it is characterized in that: described " Ω " font is greater than the circular arc of 180 degree by a radian and from the end points of this circular arc, the line to punching outer forms respectively; And the diameter of this circular arc is not less than the diameter of described bolt, the double-pointed distance of this circular arc is less than the diameter of described bolt.
4. according to motor described in claim 3, it is characterized in that: described stator core stamping sheet is square punching, described installing hole is 4, and be each positioned at a jiao in described square 4 jiaos, described radian is 270 degree, described line is orthogonal two-lines section, and this two-lines section is respectively parallel with described square one side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320512674.0U CN203406688U (en) | 2013-08-18 | 2013-08-18 | Small electric fan motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320512674.0U CN203406688U (en) | 2013-08-18 | 2013-08-18 | Small electric fan motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203406688U true CN203406688U (en) | 2014-01-22 |
Family
ID=49942608
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320512674.0U Expired - Lifetime CN203406688U (en) | 2013-08-18 | 2013-08-18 | Small electric fan motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203406688U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109245339A (en) * | 2017-07-11 | 2019-01-18 | 上海鸣志电器股份有限公司 | A kind of step motor stator and the motor with the stator |
-
2013
- 2013-08-18 CN CN201320512674.0U patent/CN203406688U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109245339A (en) * | 2017-07-11 | 2019-01-18 | 上海鸣志电器股份有限公司 | A kind of step motor stator and the motor with the stator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140122 |
|
| CX01 | Expiry of patent term |