CN202142917U - Novel slotless and brushless DC motor stator structure - Google Patents
Novel slotless and brushless DC motor stator structure Download PDFInfo
- Publication number
- CN202142917U CN202142917U CN201120077049U CN201120077049U CN202142917U CN 202142917 U CN202142917 U CN 202142917U CN 201120077049 U CN201120077049 U CN 201120077049U CN 201120077049 U CN201120077049 U CN 201120077049U CN 202142917 U CN202142917 U CN 202142917U
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- stator
- ring surface
- brushless
- slotless
- inner ring
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- Expired - Lifetime
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Abstract
The utility model relates to a novel slotless and brushless DC motor stator structure which is characterized in that: the structure comprises N stator units (1) which are connected with each other successively; the stator unit comprises an inner ring surface (3) with an R1 radius and an external ring surface (4) with an R2 radius, wherein R1 is less than R2; the inner ring surface (3) and the external ring surface (4) have the same central angle degree a; N central angle degree a of N stator units are added together to become 360 DEG; and the inner ring surface between the adjacent stator units has a gap (2). The novel slotless and brushless DC motor stator structure provided by the utility model can significantly save materials and improve material utilization by cutting the materials into strip-type materials, punching and forming the strip-type materials, and rolling the materials into annular stator structure.
Description
Technical field:
The utility model relates to the internal structure of motor and improves specifically a kind of novel stator of brushless slotless DC motor structure.
Background technology:
The manufacture method of traditional slotless electric machines motor stator punching all is a drawing; Stator core is through riveting stack moulding; Its shortcoming is that the blanking of stator core part in the process of drawing has just become waste material, has caused the waste of material, and stock utilization is low.
Summary of the invention:
For solving the problems of the technologies described above, the utility model provides a kind of novel stator of brushless slotless DC motor structure, and material is cut into bar shaped, is rolled into annulus then, and stock utilization is high.
For achieving the above object, the technical scheme that the utility model adopts is following:
The utility model comprises N stator unit that connects successively; Stator unit comprises that radius is that inner ring surface and the radius of R1 is the outer ring surface of R2; R1＜R2 wherein; Inner ring surface has identical central angle angle a with outer ring surface, and the central angle angle a of N stator unit adds up to 360 degree, and the inner ring surface place between the adjacent stators unit is jagged.This structure can be cut into bar shaped by material, and punch forming is rolled into annulus again, has improved stock utilization.
Further, the top of said breach is divided into polygon or circle, and the bottom is divided into straight flange.When being rolled into annulus, straight portion is fitted each other, and the polygon on top or the circular buffering that forms are convenient to roll.
Preferably, the central angle angle a of said each stator unit is identical, promptly N multiply by a equal 360 the degree.Help taking all factors into consideration the back from various aspects such as processing technology, manufacturing cost, motor magnetic properties like this and implement, effect is best.
Further, be respectively equipped with the corresponding convexity and first groove on the stator unit at two ends.When rolling, the cooperation of convexity and groove is convenient to connect, and makes that whole stator is firm.
Further, the middle part of each stator unit is provided with the hole, is used for the stator riveted joint; Second groove is arranged, in order to realize the magnetic circuit balance of motor on the extrados of corresponding aperture.
The utility model is cut into bar shaped with material (for example silicon steel sheet), and punch forming rolls into circular stator structure then, has practiced thrift material greatly, has improved stock utilization.
Description of drawings:
Fig. 1 is the machining state figure of embodiment;
Fig. 2 is the structure chart of embodiment user mode;
Wherein, 1, stator unit, 2, breach, 3, intrados, 4, extrados, 5, convexity, 6, first groove, 7, the hole, 8, second groove.
Embodiment:
As shown in Figure 1, comprise 12 stator units, be stamped to form by the bar shaped silicon steel sheet, each stator unit has identical inner ring surface 3 and identical outer ring surface 4, and radian all is 30 degree.The top of breach 2 is circular, and the bottom is a straight flange, and it is porose 7 that the middle part of each stator unit all is provided with, and the extrados 4 of corresponding aperture 7 is provided with second groove 8; Be respectively equipped with protruding 5 and first groove 6 on two stator units at two ends.
During use, as shown in Figure 2, the bar material among Fig. 1 is rolled into annulus, protruding 5 and first groove 6 is connected; The straight flange of each breach 2 is also fitted each other, and is seamless; Because the internal and external cambered surface of each stator unit all is 30 degree, just in time constitutes an annulus, forms the stator of brushless slotless DC motor structure.
Claims (5)
1. novel stator of brushless slotless DC motor structure; It is characterized in that: comprise N stator unit (1) that connects successively; Stator unit comprises that radius is the inner ring surface (3) of R1 and the outer ring surface (4) that radius is R2, R1＜R2 wherein, and inner ring surface (3) has identical central angle angle a with outer ring surface (4); The central angle angle a of N stator unit adds up to 360 degree, the inner ring surface place between the adjacent stators unit jagged (2).
2. stator of brushless slotless DC motor structure according to claim 1 is characterized in that: the top of said breach (2) is divided into polygon or circle, and the bottom is divided into straight flange.
3. stator of brushless slotless DC motor structure according to claim 1 and 2 is characterized in that: be respectively equipped with corresponding convexity (5) and first groove (6) on the stator unit at two ends.
4. groove brushless DC motor stator structure according to claim 3 is characterized in that: the central angle angle a of said each stator unit is identical, promptly N multiply by a equal 360 the degree.
5. stator of brushless slotless DC motor structure according to claim 4 is characterized in that: the middle part of each stator unit is provided with hole (7), and second groove (8) is arranged on the extrados of corresponding aperture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120077049U CN202142917U (en) | 2011-03-23 | 2011-03-23 | Novel slotless and brushless DC motor stator structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120077049U CN202142917U (en) | 2011-03-23 | 2011-03-23 | Novel slotless and brushless DC motor stator structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202142917U true CN202142917U (en) | 2012-02-08 |
Family
ID=45553955
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120077049U Expired - Lifetime CN202142917U (en) | 2011-03-23 | 2011-03-23 | Novel slotless and brushless DC motor stator structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202142917U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103812235A (en) * | 2014-01-20 | 2014-05-21 | 东明机电（深圳）有限公司 | Stator core without tooth space, stator core manufacturing method and brushless micro-motor without tooth space |
-
2011
- 2011-03-23 CN CN201120077049U patent/CN202142917U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103812235A (en) * | 2014-01-20 | 2014-05-21 | 东明机电（深圳）有限公司 | Stator core without tooth space, stator core manufacturing method and brushless micro-motor without tooth space |
| CN103812235B (en) * | 2014-01-20 | 2016-06-08 | 东明机电（深圳）有限公司 | Slotless stator core and manufacture method thereof and slotless brushless micro motor |
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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: 20120208 |
|
| CX01 | Expiry of patent term |