CN203456958U

CN203456958U - Motor stator

Info

Publication number: CN203456958U
Application number: CN201320478734.1U
Authority: CN
Inventors: 王飞; 万为君; 陈金涛; 文凯平; 周向阳
Original assignee: Guangdong Welling Motor Manufacturing Co Ltd; Midea Welling Motor Technology Shanghai Co Ltd
Current assignee: Guangdong Welling Motor Manufacturing Co Ltd; Midea Welling Motor Technology Shanghai Co Ltd
Priority date: 2013-08-06
Filing date: 2013-08-06
Publication date: 2014-02-26
Anticipated expiration: 2023-08-06

Abstract

The utility model belongs to the technical field of motors and provides a motor stator. The motor stator comprises a tooth part iron core and a yoke part iron core connected on the tooth part iron core. The tooth part iron core comprises straight teeth and bent teeth. The width of each straight tooth is smaller than that of each bent tooth. The motor stator adopts a structure characterized by a split state of the tooth part iron core and the yoke part iron core. The width of each straight tooth of the tooth part iron core is smaller than that of each bent tooth. A groove area can be significantly increased in a condition that magnetic fields are reasonably distributed. Coiling is facilitated. A motor efficiency increase is also facilitated. Coiling ends can be shortened. Low copper consumption on end parts of windings is achieved. The product cost is also low. Stator tooth part magnetic circuits can be uniformly distributed. Wire groove areas are large. In fact, a great number of windings can be accommodated inside the wire grooves. The stator groove coiling utilization rate is high. A motor efficiency increase can be facilitated.

Description

Motor stator

Technical field

The utility model belongs to technical field of motors, relates in particular to a kind of motor stator.

Background technology

In prior art, tooth portion in motor stator and yoke portion are generally monolithic constructions, during its coiling, need be from the outside coiling of stator center in wire casing, winding terminal minister, end copper consumption is larger, product copper loss is large, and prior art center line groove area is less, day patent documentation of the present disclosure: Unexamined Patent 5-83907 for example, the facewidth stator structures such as its motor stator employing, stator teeth magnetic circuit skewness, wherein curved tooth magnetic field intensity is high, straight-tooth magnetic field intensity is low, stator slot coiling utilance is lower, groove area is less, in groove, actual winding is less, copper loss increases, and efficiency can reduce.

Utility model content

The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, and a kind of motor stator is provided, and it can improve the efficiency of motor.

The utility model is achieved in that a kind of motor stator, comprises tooth portion iron core and is connected in the yoke portion iron core of described tooth portion iron core, and described tooth portion iron core has straight-tooth and curved tooth, and the width of described straight-tooth is less than the width of described curved tooth.

Alternatively, the ratio between the width of described straight-tooth and the width of described curved tooth is more than or equal to 0.5 and be less than 1.

Alternatively, described tooth portion iron core comprises the stator punching of a plurality of stacked arrangement and is arranged in the reference column of stator punching described in each.

Alternatively, described curved tooth comprises:

Connecting portion inside being positioned at,

From oblique outward extending the first extension of described connecting portion,

From outward extending the second extension of described the first extension,

From outward extending the 3rd extension of described the second extension,

From described the 3rd extension horizontal expansion and the fixed part that joins with described yoke portion iron core.

Alternatively, the angle between described the second extension and described the 3rd extension is 150 degree.

Alternatively, between described fixed part and described yoke portion iron core, be provided with the concavo-convex location structure that coordinates.

Alternatively, described concavo-convex cooperation location structure comprises and is arranged at wherein the location notch on fixed part described at least one and is arranged at wherein described at least one on yoke portion iron core and snaps in the positioning convex portion of described location notch.

Alternatively, described in each, stator punching upper punch is provided with the button wedge portion matching for the stator punching with adjacent.

Alternatively, described yoke portion iron core comprises the yoke portion punching of a plurality of stacked arrangement.

Alternatively, the thickness of described stator punching is 0.5 millimeter.

Motor stator that the utility model provides, it adopts the structure of tooth portion iron core and yoke portion iron-core split-type, and the width of the straight-tooth of tooth portion iron core is less than the width of curved tooth, in the rational situation of Distribution of Magnetic Field, greatly increase groove area, be conducive to the lifting of coiling and electric efficiency, and can shorten winding terminal, winding overhang copper consumption is little, and product cost is low; And can make stator teeth magnetic circuit be evenly distributed, wire casing area is large, in wire casing, the actual winding holding is many, and stator slot coiling utilance is high, is beneficial to the efficiency that improves motor.

Accompanying drawing explanation

Fig. 1 is the assembling front view of tooth portion iron core and yoke portion iron core in the motor stator that provides of the utility model embodiment;

Fig. 2 is the generalized section of tooth portion iron core and yoke portion iron core in Fig. 1;

Fig. 3 is the front view of stator punching in the motor stator that provides of the utility model embodiment;

Fig. 4 is the partial view of stator punching in the motor stator that provides of the utility model embodiment;

Fig. 5 is another partial view of stator punching in the motor stator that provides of the utility model embodiment;

Fig. 6 is the front view of yoke portion iron core in the motor stator that provides of the utility model embodiment;

Fig. 7 is the generalized section of the A-A section of yoke portion iron core in Fig. 6.

Embodiment

In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.

As shown in FIG. 1 to 3, a kind of motor stator that the utility model embodiment provides, comprise tooth portion iron core 1 and the yoke portion iron core 2 that is connected in tooth portion iron core 1, tooth portion iron core 1 has straight-tooth 11 and the curved tooth 12 being arranged alternately, and the width W 1 of straight-tooth 11 is less than the width W 2 of curved tooth 12; Tooth portion iron core 1 comprises the stator punching 10 of a plurality of stacked arrangement and is arranged in the reference column 13 of each stator punching 10.By tooth portion iron core 1 and yoke portion iron core being arranged for 2 minutes and the width W of straight-tooth 11 1 being set to be less than the width W 2 of curved tooth 12, its winding (not identifying in figure) can be directly in leading groove 101, can shorten winding terminal, winding overhang copper consumption is little, and can make the magnetic circuit of stator teeth be evenly distributed, and also makes the size of wire casing 101 increase, wire casing 101 areas are large, in wire casing 101, the actual winding holding is many, and wire casing 101 coiling utilances are high, are beneficial to the efficiency that improves motor.

Particularly, the ratio between the width W 1 of straight-tooth 11 and the width W 2 of curved tooth 12 is more than or equal to 0.5 and be less than 1.In concrete application, the ratio between the width W 1 of straight-tooth 11 and the width W 2 of curved tooth 12 also can be set to the appropriate value below 0.5, also belongs to protection range of the present utility model.

Particularly, as shown in Fig. 1～Fig. 5, curved tooth 12 comprises: be positioned at the connecting portion 120 of inner side, from oblique outward extending the first extension 121 of connecting portion 120, from outward extending the second extension 122 of the first extension 121, from outward extending the 3rd extension 123 of the second extension 122, from the 3rd extension 123 horizontal expansions and the fixed part 124 that joins with yoke portion iron core 2.In the present embodiment, the width of the first extension 121, the second extension 122 and the 3rd extension 123 equates.Curved tooth 12 can roughly be the suitable shapes such as serpentine.

Preferably, as shown in Fig. 1～Fig. 5, the included angle A between the second extension 122 and the 3rd extension 123 is 150 degree.Certainly, understandably, the angle A between the second extension 122 and the 3rd extension 123 also can be set to other suitable angle.

Particularly, as shown in Fig. 1～Fig. 7, between fixed part 124 and yoke portion iron core 2, be provided with the concavo-convex location structure that coordinates, so that the assembling of tooth portion iron core 1 and yoke portion iron core 2.

Particularly, as shown in Fig. 1～Fig. 7, concavo-convex cooperation location structure comprises the location notch 125 being arranged at least one fixed part 124 wherein and is arranged at least one yoke portion iron core 2 wherein and snaps in the positioning convex portion 21 of location notch 125.

Particularly, on each stator punching 10, can rush the button wedge portion (figure does not indicate) matching for the stator punching 10 with adjacent that is provided with.The structure of button wedge portion for establishing towards other end punching from stator punching 10 one end, one end depression, other end is corresponding enters projection, the recessed fit of projection and another stator punching 10.

Particularly, yoke portion iron core 2 comprises the yoke portion punching (not indicating in figure) of a plurality of stacked arrangement, and the thickness of yoke portion punching and quantity can equate with thickness and the quantity of stator punching 10.

Preferably, the thickness of stator punching 10 can be 0.5 millimeter.In concrete application, the thickness of tooth portion iron core 1 and yoke portion iron core 2 can be 14,17.5,20,22.5,25,27.5,30 or 40 millimeters, and correspondingly punching quantity can be 28,35,40,45,50,55,60 or 80.Certainly, understandably, the thickness of stator punching 10 and quantity also can be set to other suitable numerical value.

Magnetic field analysis discovery, during motor operation, on stator straight-tooth 11, magnetic field intensity will be far smaller than the magnetic field intensity on curved tooth 12, can reduce straight-tooth 11 facewidth, and very little to influence on Harmonic Armature, now, groove area has increased, and can increase winding, further lifting motor efficiency.Motor stator that the utility model provides, it adopts the split type structure of tooth portion iron core 1 and yoke portion iron core 2, and the width of the straight-tooth 11 of tooth portion iron core 1 is less than the width of curved tooth 12, in the rational situation of Distribution of Magnetic Field, greatly increase groove area, be conducive to the lifting of coiling and electric efficiency, and can shorten winding terminal, winding overhang copper consumption is little, and can make stator teeth magnetic circuit be evenly distributed, and the size of wire casing 101 is increased, wire casing 101 areas are large, in wire casing 101, the actual winding holding is many, and stator slot coiling utilance is high, is beneficial to the efficiency that improves motor.

These are only preferred embodiment of the present utility model, not in order to limit the utility model, all any modifications of doing within spirit of the present utility model and principle, be equal to and replace or improvement etc., within all should being included in protection range of the present utility model.

Claims

1. a motor stator, comprises tooth portion iron core and is connected in the yoke portion iron core of described tooth portion iron core, and described tooth portion iron core has straight-tooth and curved tooth, it is characterized in that, the width of described straight-tooth is less than the width of described curved tooth.

2. motor stator as claimed in claim 1, is characterized in that, the ratio between the width of described straight-tooth and the width of described curved tooth is more than or equal to 0.5 and be less than 1.

3. motor stator as claimed in claim 1, is characterized in that, described tooth portion iron core comprises the stator punching of a plurality of stacked arrangement and is arranged in the reference column of stator punching described in each.

4. motor stator as claimed in claim 3, it is characterized in that, described curved tooth comprises: be positioned at the connecting portion of inner side, from oblique outward extending the first extension of described connecting portion, from outward extending the second extension of described the first extension, from outward extending the 3rd extension of described the second extension, from described the 3rd extension horizontal expansion and the fixed part that joins with described yoke portion iron core.

5. motor stator as claimed in claim 4, is characterized in that, the angle between described the second extension and described the 3rd extension is 150 degree.

6. motor stator as claimed in claim 4, is characterized in that, between described fixed part and described yoke portion iron core, is provided with the concavo-convex location structure that coordinates.

7. motor stator as claimed in claim 6, it is characterized in that, described concavo-convex cooperation location structure comprises and is arranged at wherein the location notch on fixed part described at least one and is arranged at wherein described at least one on yoke portion iron core and snaps in the positioning convex portion of described location notch.

8. the motor stator as described in any one in claim 3 to 7, is characterized in that, described in each, stator punching upper punch is provided with the button wedge portion matching for the stator punching with adjacent.

9. the motor stator as described in any one in claim 1 to 7, is characterized in that, described yoke portion iron core comprises the yoke portion punching of a plurality of stacked arrangement.

10. the motor stator as described in any one in claim 3 to 7, is characterized in that, the thickness of described stator punching is 0.5 millimeter.