CN102882292A - Stator punching sheet - Google Patents
Stator punching sheet Download PDFInfo
- Publication number
- CN102882292A CN102882292A CN2012103734050A CN201210373405A CN102882292A CN 102882292 A CN102882292 A CN 102882292A CN 2012103734050 A CN2012103734050 A CN 2012103734050A CN 201210373405 A CN201210373405 A CN 201210373405A CN 102882292 A CN102882292 A CN 102882292A
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- stator
- pole
- shoe face
- punching
- punching sheet
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Abstract
The invention discloses a stator punching sheet which comprises a punching sheet body (1) and an inner stator hole (2) in the middle of the punching sheet body (1). A plurality of stator magnetic poles (3) are arranged on the punching sheet body (1) symmetrically around the circle center of the punching sheet body (1), a stator pole shoe (4) is arranged on one side, close to the inner stator hole (2), of each stator magnetic pole (3), the pole shoe surface (401), facing the inner stator hole (2), of each stator pole shoe (4) is an arc surface, and the distance from each pole shoe surface (401) to the center of the punching sheet body (1) is gradually increased from one end to the other end of the pole shoe surface (401). By the stator punching sheet, the gap flux density can be improved, harmonic content is reduced, motor efficiency is improved, and moment fluctuation is weakened.
Description
Technical field
The present invention relates to technical field of motors, specifically is a kind of stator punching.
Background technology
Air gap also is in gap between motor stator and the rotor, and it is the path in magnetic field, is the path of electric energy and mechanical energy conversion, and in equal magnetomotive situation, air gap is larger, and magnetic resistance is larger, and the density of magnetic induction line is less, and formed magnetic field intensity is also just more weak.
The stator punching of prior art, it comprises the stator inner hole in the middle of punching body and the punching body, on the punching body with the center of circle of punching body symmetrical be provided with a plurality of magnetic pole of the stator, each magnetic pole of the stator is respectively equipped with stator pole shoes in the side near stator inner hole, the pole-shoe face towards stator inner hole of each stator pole shoes is arc surface, the arc surface of each stator pole shoes is isocentric circular arc, during the motor stator assembling motor that laminates with this stator punching, space between rotor and the pole-shoe face is air gap, air gap between whole pole-shoe face and rotor is changeless, that is to say the structure that adopts even air gap, the density of air-gap field immobilizes, air-gap field and nonideal sine wave contain a large amount of harmonic waves in the air-gap field, make in the electromotive force harmonic content very large, motor harmonic current and additional harmonic wave iron loss have been increased, affect the further raising of electric efficiency, harmonic field also can produce torque fluctuations in addition, causes vibrations and noise.
Summary of the invention
Technical problem to be solved by this invention is, provides and improves air gap flux density, and harmonic content is reduced, and electric efficiency improves, and reduces the stator punching of torque fluctuations.
For solving the problems of the technologies described above, stator punching provided by the invention, it comprises the stator inner hole in the middle of punching body and the punching body, on the punching body with the center of circle of punching body symmetrical be provided with a plurality of magnetic pole of the stator, each magnetic pole of the stator is respectively equipped with stator pole shoes in a side of pointing to stator inner hole, the pole-shoe face towards stator inner hole of each stator pole shoes is arc surface, the end to end of described each pole-shoe face to the distance at the center of punching body from pole-shoe face increases gradually, when that is to say the motor stator assembling motor that laminates when this stator punching, non-uniform air-gap, air gap increases gradually from the end to end of pole-shoe face.
After adopting above structure, the present invention compared with prior art has advantages of following:
Air gap evenly increases from the end to end of pole-shoe face, air gap flux density is reduced gradually from the end to end of pole-shoe face, utilize two-dimensional finite unit method that the motor model after improving is carried out emulation, this moment, air-gap field was relatively near desirable sine wave as can be known, harmonic content obviously reduces, thereby has reduced motor harmonic current and additional harmonic loss, and the efficient of motor is improved, reduce simultaneously torque fluctuations, reduced vibrations and noise.
As improvement, the mid point of described pole-shoe face is 19 millimeters to the center of punching body apart from a, an end of anticlockwise pole-shoe face that is positioned at the mid point of pole-shoe face is 18.8 millimeters to the distance b at the center of punching body, the other end of clockwise pole-shoe face that is positioned at the mid point of pole-shoe face is 19.3 millimeters to the distance at the center of punching body, this is the optimal selection of air gap eccentric centre distance, this moment, harmonic content was minimum, and electric efficiency is the highest.
Description of drawings
Fig. 1 is the structural representation of stator punching of the present invention;
Fig. 2 is that stator punching and rotor cooperate the structural representation that makes.
Wherein, 1, stator punching; 2, stator inner hole; 201, air gap; 3, magnetic pole of the stator; 4, stator pole shoes; 401, pole-shoe face;
A represents that the mid point of pole-shoe face is to the distance at the center of punching body;
B represents to be positioned at the end of anticlockwise pole-shoe face of mid point of pole-shoe face to the distance at the center of punching body;
C represents to be positioned at the other end of clockwise pole-shoe face of mid point of pole-shoe face to the distance at the center of punching body.
Embodiment
Below in conjunction with the drawings and specific embodiments the present invention is described in more detail.
By the structural representation of stator punching of the present invention shown in Figure 1 as can be known, it comprises the stator inner hole 2 in the middle of punching body 1 and the punching body 1, on the punching body 1 with the center of circle of punching body 1 symmetrical be provided with a plurality of magnetic pole of the stator 3, each magnetic pole of the stator 3 is respectively equipped with stator pole shoes 4 in a side of pointing to stator inner hole 2, the pole-shoe face 401 towards stator inner hole 2 of each stator pole shoes 4 is arc surface, the end to end of described each pole-shoe face 401 to the distance at the center of punching body 1 from pole-shoe face 401 increases gradually, that is to say as shown in Figure 2, when motor stator assembling motor that this stator punching laminates, air gap 201 is inhomogeneous, be the air gap 201 of off-centre, air gap 201 increases gradually from the end to end of pole-shoe face 401.
Concrete, the mid point of described pole-shoe face 401 is 19 millimeters to the center of punching body 1 apart from a, an end of anticlockwise pole-shoe face 401 that is positioned at the mid point of pole-shoe face 401 is 18.8 millimeters to the distance b at the center of punching body 1, and the other end of clockwise pole-shoe face 401 that is positioned at the mid point of pole-shoe face 401 is 19.3 millimeters to the distance c at the center of punching body 1.
Below only use better example with regard to the present invention and made explanation, but can not be interpreted as it is limitations on claims, structure of the present invention can have other variations, is not limited to said structure.In a word, all various variations of doing in the protection range of independent claims of the present invention are all in protection scope of the present invention.
Claims (2)
1. stator punching, it comprises the stator inner hole (2) in the middle of punching body (1) and the punching body (1), punching body (1) center of circle upper and punching body (1) is symmetrical is provided with a plurality of magnetic pole of the stator (3), each magnetic pole of the stator (3) is respectively equipped with stator pole shoes (4) in the side near stator inner hole (2), the pole-shoe face towards stator inner hole (2) of each stator pole shoes (4) (401) is arc surface, it is characterized in that: the end to end of described each pole-shoe face (401) to the distance at the center of punching body (1) from pole-shoe face (401) increases gradually.
2. stator punching according to claim 1, it is characterized in that: the mid point of described pole-shoe face (401) is 19 millimeters to the distance (a) at the center of punching body (1), an end of anticlockwise pole-shoe face (401) that is positioned at the mid point of pole-shoe face (401) is 18.8 millimeters to the distance (b) at the center of punching body (1), and the other end of clockwise pole-shoe face (401) that is positioned at the mid point of pole-shoe face (401) is 19.3 millimeters to the distance (c) at the center of punching body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103734050A CN102882292A (en) | 2012-09-27 | 2012-09-27 | Stator punching sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103734050A CN102882292A (en) | 2012-09-27 | 2012-09-27 | Stator punching sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102882292A true CN102882292A (en) | 2013-01-16 |
Family
ID=47483507
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012103734050A Pending CN102882292A (en) | 2012-09-27 | 2012-09-27 | Stator punching sheet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102882292A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105830319A (en) * | 2013-12-20 | 2016-08-03 | 法雷奥电机设备公司 | Motor Vehicle Engine Starter Having A Rotary Electric Machine With Perfected Salient Pole Inductor, And Corresponding Pole Shoe |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050134133A1 (en) * | 2001-09-05 | 2005-06-23 | Koyo Seiko Co., Ltd. | Brushless DC motor |
| CN201663530U (en) * | 2010-02-10 | 2010-12-01 | 无锡东南车辆科技有限公司 | Direct-current brushless motor for photovoltaic water pump |
| CN102013738A (en) * | 2009-09-04 | 2011-04-13 | 惠而浦股份有限公司 | Stator blade for an electric motor |
| CN202160018U (en) * | 2011-08-16 | 2012-03-07 | 重庆神驰机电有限公司 | Exciter stator punching sheet |
| CN102629811A (en) * | 2012-03-05 | 2012-08-08 | 浙江亿利达风机股份有限公司 | Brushless direct current motor |
-
2012
- 2012-09-27 CN CN2012103734050A patent/CN102882292A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050134133A1 (en) * | 2001-09-05 | 2005-06-23 | Koyo Seiko Co., Ltd. | Brushless DC motor |
| CN102013738A (en) * | 2009-09-04 | 2011-04-13 | 惠而浦股份有限公司 | Stator blade for an electric motor |
| CN201663530U (en) * | 2010-02-10 | 2010-12-01 | 无锡东南车辆科技有限公司 | Direct-current brushless motor for photovoltaic water pump |
| CN202160018U (en) * | 2011-08-16 | 2012-03-07 | 重庆神驰机电有限公司 | Exciter stator punching sheet |
| CN102629811A (en) * | 2012-03-05 | 2012-08-08 | 浙江亿利达风机股份有限公司 | Brushless direct current motor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105830319A (en) * | 2013-12-20 | 2016-08-03 | 法雷奥电机设备公司 | Motor Vehicle Engine Starter Having A Rotary Electric Machine With Perfected Salient Pole Inductor, And Corresponding Pole Shoe |
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Application publication date: 20130116 |