CN220874281U - Stator punching sheet, stator and motor - Google Patents
Stator punching sheet, stator and motor Download PDFInfo
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- CN220874281U CN220874281U CN202322493805.1U CN202322493805U CN220874281U CN 220874281 U CN220874281 U CN 220874281U CN 202322493805 U CN202322493805 U CN 202322493805U CN 220874281 U CN220874281 U CN 220874281U
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- 238000004080 punching Methods 0.000 title claims abstract description 135
- 230000002093 peripheral effect Effects 0.000 claims abstract description 13
- 238000003475 lamination Methods 0.000 claims description 16
- 238000003466 welding Methods 0.000 abstract description 6
- 239000002699 waste material Substances 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Abstract
The embodiment of the utility model relates to the technical field of motors, and particularly discloses a stator punching sheet, a stator and a motor, wherein the stator punching sheet comprises a yoke part, the yoke part is annular, and a driving hole is formed in the yoke part; the plurality of punching teeth are arranged on the inner peripheral edge of the yoke part at intervals along the axial direction of the yoke part, and a punching groove is formed between every two adjacent punching teeth and is communicated with the driving hole through a notch, and the bottom of the punching groove extends towards the direction of the notch to form an arc-shaped positioning protrusion. Through the mode, the embodiment of the utility model can reduce the phenomenon that adjacent stator punching sheets are misplaced, thereby ensuring that the whole stator is qualified in size after welding and avoiding resource waste.
Description
Technical Field
The embodiment of the utility model relates to the technical field of motors, in particular to a stator punching sheet, a stator and a motor.
Background
The motor comprises a stator and a rotor, and is a core component of the motor, wherein the stator is formed by stacking stator punching sheets and welding buckling sheet clamping grooves through a welding gun, so that adjacent stator sheets are integrated.
The inventors of the present utility model found that, in the process of implementing the present utility model: the phenomenon of dislocation easily appears between the adjacent stator punching to easily cause whole stator welding back size disqualification, cause the cost to increase, waste of resources.
Disclosure of utility model
In view of the above, embodiments of the present utility model provide a stator lamination, a stator, and a motor, which overcome or at least partially solve the above-described problems.
According to one aspect of the present utility model, there is provided a stator lamination comprising: the yoke part is annular, and a driving hole is formed in the yoke part; the plurality of punching teeth are arranged on the inner peripheral edge of the yoke part at intervals along the axial direction of the yoke part, and a punching groove is formed between every two adjacent punching teeth and is communicated with the driving hole through a notch, and the bottom of the punching groove extends towards the direction of the notch to form an arc-shaped positioning protrusion.
In an optional mode, the number of the punching teeth is three, the three punching teeth comprise a first punching tooth, a second punching tooth and a third punching tooth, the first punching tooth, the second punching tooth and the third punching tooth are sequentially arranged on the inner peripheral edge of the yoke part, a first punching groove is formed between the first punching tooth and the second punching tooth, a second punching groove is formed between the second punching tooth and the third punching tooth, and a third punching groove is formed between the third punching tooth and the first punching tooth.
In an optional manner, the punching teeth comprise a connecting portion and an arc portion, one end of the connecting portion is connected to the inner peripheral edge of the yoke portion, the other end of the connecting portion is connected to the arc portion, an arc surface on the arc portion faces the driving hole, and the arc portions of the plurality of punching teeth are enclosed at intervals to form the driving hole.
In an alternative mode, the notch of each punching sheet groove is opposite to one punching sheet tooth; the width of the notch of the punching sheet groove is L1, the width of the connecting part of the punching sheet tooth is L2, and L1/L2 is more than or equal to 1.85 and less than or equal to 2.12.
In an alternative mode, the thickness of the arc-shaped part is L4, and L4 is more than or equal to 0.9mm and less than or equal to 1.1mm.
In an alternative mode, the yoke part is also provided with a limit groove and an opening communicated with the limit groove; the distance between the bottom of the punching sheet groove and the outer periphery of the yoke part is L3, the distance from the top point of the arc-shaped positioning protrusion to the bottom of the limiting groove is L5, and L3/L5 is more than or equal to 0.428 and less than or equal to 0.538.
In an alternative mode, the arc radius of the arc-shaped positioning protrusion is D1; the bottom of the punching sheet groove is also provided with a first arc-shaped groove and a second arc-shaped groove, the arc-shaped positioning protrusion is positioned between the first arc-shaped groove and the second arc-shaped groove, the arc radius of the first arc-shaped groove is D2, and D1/D2 is more than or equal to 1.6 and less than or equal to 1.75.
In an alternative mode, the horizontal distance from the arc center of the arc-shaped positioning protrusion to the axis of the yoke is X1, X1 is less than or equal to 1.6mm and less than or equal to 1.8mm, the vertical distance from the arc center of the arc-shaped positioning protrusion to the axis of the yoke is Y1, and Y1 is less than or equal to 7.9mm and less than or equal to 8.1mm.
According to another aspect of the present utility model, there is provided a stator including: stator core and coil, stator core is laminated by above-mentioned stator punching, the coil twines on the punching tooth.
According to another aspect of the present utility model there is provided an electrical machine comprising a housing, a rotor and a stator as described above, the stator being disposed within the housing, the rotor being rotatably disposed within the stator.
The embodiment of the utility model has the beneficial effects that: unlike the prior art, embodiments of the present utility model provide a yoke and a plurality of punch teeth. The stator punching sheet comprises a yoke part and a plurality of stator punching sheets, wherein the yoke part is annular, a driving hole is formed in the yoke part, a plurality of punching sheet teeth are arranged on the inner peripheral edge of the yoke part at intervals in the axial direction of the yoke part, a punching sheet groove is formed between every two adjacent punching sheet teeth and is communicated with the driving hole through a notch, an arc-shaped positioning protrusion extends towards the notch direction, a user can observe whether the arc-shaped positioning protrusions on the adjacent stator punching sheets are in a dislocation or superposition state or not when the stator punching sheets are laminated, the arc-shaped positioning protrusions can be used for conveniently positioning the stator punching sheets laminated mutually, the dislocation phenomenon of the adjacent stator punching sheets is reduced, the size of the whole stator after welding is guaranteed to be qualified, and the resource waste is avoided.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. Like elements or portions are generally identified by like reference numerals throughout the several figures. In the drawings, elements or portions thereof are not necessarily drawn to scale.
FIG. 1 is a schematic view illustrating an overall structure of a stator lamination according to an embodiment of the present utility model;
fig. 2 is a schematic view of a part of a stator core according to an embodiment of the present utility model;
FIG. 3 is another angular schematic view of a stator core according to an embodiment of the present utility model;
FIG. 4 is a schematic illustration of the overall structure of a stator lamination in accordance with an embodiment of the present utility model;
FIG. 5 is a schematic illustration of another labeling of the overall structure of a stator lamination in accordance with an embodiment of the utility model
FIG. 6 is another labeled schematic illustration of the overall structure of a stator lamination in accordance with an embodiment of the utility model;
Fig. 7 is a schematic view showing a part of the structure of a stator according to an embodiment of the present utility model.
Detailed Description
In order that the utility model may be readily understood, a more particular description thereof will be rendered by reference to specific embodiments that are illustrated in the appended drawings. It will be understood that when an element is referred to as being "fixed" to another element, it can be directly on the other element or one or more intervening elements may be present therebetween. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or one or more intervening elements may be present therebetween. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used in this specification includes any and all combinations of one or more of the associated listed items.
In addition, the technical features mentioned in the different embodiments of the application described below can be combined with one another as long as they do not conflict with one another.
Referring to fig. 1, a stator lamination 1000 includes a yoke portion 10 and a plurality of lamination teeth 20. Wherein the yoke 10 is ring-shaped, and the plurality of punching teeth 20 are arranged on the inner peripheral edge of the yoke 10 at intervals along the axial direction of the yoke 10. The yoke 10 and the plurality of punch teeth 20 are described in detail below.
For the yoke 10, as shown in fig. 1 and 2, the yoke 10 is annular, a driving hole 10a is formed in the yoke 10, a plurality of stator laminations are stacked to form a stator core, the plurality of driving holes 10a on the stator core are connected to form a driving cavity 10aa, the driving cavity 10aa penetrates through two end surfaces of the stator core, and a rotor on a motor is arranged in the driving cavity 10aa and can rotate in the driving cavity 10 aa. The rotor rotates in the driving cavity 10aa, so that electric energy is converted into mechanical energy, and the purpose of driving other components to operate is achieved.
In some embodiments, the yoke 10 is further provided with a limiting slot 101 and an opening 102 communicating with the limiting slot 101, and the limiting slot 101 can play a role in mounting and positioning the formed stator.
For the above-mentioned punching teeth 20, as shown in fig. 1-3, the number of the punching teeth 20 is plural, the plural punching teeth 20 are disposed on the inner peripheral edge of the yoke 10 at intervals along the axial direction of the yoke 10, and a punching slot 20a is formed between adjacent punching teeth 20, the punching slot 20a is communicated with the driving hole 10a through a slot opening, and the slot bottom of the punching slot 20a extends toward the slot opening direction with an arc-shaped positioning protrusion 20b. The punch teeth 20 may facilitate winding of coils on the stator, with the coils being located within the punch slots 20 a. When the stator punching sheets are laminated, a user can observe whether the arc-shaped positioning protrusions 20b on the adjacent stator punching sheets are in a dislocation or superposition state, and the arc-shaped positioning protrusions 20b can be convenient for positioning the stator punching sheets laminated with each other, so that dislocation of the adjacent stator punching sheets is reduced.
In some embodiments, the number of the punching teeth 20 is three, the three punching teeth 20 include a first punching tooth 21, a second punching tooth 22, and a third punching tooth 23, the first punching tooth 21, the second punching tooth 22, and the third punching tooth 23 are sequentially disposed on the inner peripheral edge of the yoke 10, a first punching groove 20a is formed between the first punching tooth 21 and the second punching tooth 22, a second punching groove 20a is formed between the second punching tooth 22 and the third punching tooth 23, and a third punching groove 20a is formed between the third punching tooth 23 and the first punching tooth 21. It will be appreciated that: the number of the punching teeth includes, but is not limited to, three, but may be other numbers, such as: 5, 8, 10, etc.
In some embodiments, the punch teeth 20 include a connection portion 201 and an arc portion 202, one end of the connection portion 201 is connected to the inner peripheral edge of the yoke portion 10, the other end of the connection portion 201 is connected to the arc portion 202, an arc surface on the arc portion 202 faces the driving hole 10a, and the arc portions 202 of the punch teeth 20 are spaced and surrounded to form the driving hole 10a. Optionally, the notch of each punching slot 20a is opposite to one punching tooth 20, the width of the notch of the punching slot 20a is L1, the width of the connecting portion 201 of the punching tooth 20 is L2, and L1/L2 is 1.85 or less and 2.12 or less. Alternatively, referring to FIG. 4, the thickness of the arc-shaped portion 202 is L4, and L4 is 0.9 mm.ltoreq.L4.ltoreq.1.1 mm. In the present application, the widths of the connection portions 201 on the plurality of punching teeth 20 are equal, and in other embodiments, the widths of the connection portions 201 on the plurality of punching teeth 20 may be set to be unequal.
In some embodiments, the slot wall of the punching slot 20a is coated with an insulating layer 20aa, the insulating layer 20aa is formed by coating an insulating material, and the insulating layer 20aa may play a role of insulating protection.
In some embodiments, the distance between the bottom of the slot 20a and the outer periphery of the yoke 10 is L3, the distance from the top of the arc-shaped positioning protrusion 20b to the bottom of the limit slot 101 is L5, and 0.428+.l3/l5+.0.538.
It should be noted that: in the present application, the bottom of the punching groove 20a refers to the deepest point or plane in the punching groove 20a, the distance between the bottom of the punching groove 20a and the outer periphery of the yoke 10 is L3, and the distance between the deepest point or plane in the punching groove 20a and the outer periphery of the yoke 10 is L3, where the dimension of L3 is the smallest dimension. Wherein, the vertex of the arc-shaped positioning protrusion 20b refers to the highest point on the arc-shaped positioning protrusion 20b, and the distance from the vertex of the arc-shaped positioning protrusion 20b to the bottom of the limit groove 101 is L5, and the distance from the highest point on the arc-shaped positioning protrusion 20b to the bottom of the limit groove 101 is L5.
In some embodiments, referring to fig. 5 and fig. 6 together, the arc radius of the arc positioning protrusion 20b is D1, the slot bottom of the punching slot 20a is further provided with a first arc slot and a second arc slot, the arc positioning protrusion 20b is located between the first arc slot and the second arc slot, the arc radius of the first arc slot is D2, and 1.6 is less than or equal to D1/D2 is less than or equal to 1.75. Optionally, the arc radii of the first arc-shaped groove and the second arc-shaped groove are equal.
In some embodiments, the horizontal distance from the arc center of the first arc-shaped groove to the axis of the yoke 10 is X2, X2 is 1.6mm < 1.8mm, and the vertical distance from the arc center of the first arc-shaped groove to the axis of the yoke 10 is Y2, Y2 is 7.9mm < 8.1mm.
In some embodiments, the horizontal distance from the arc center of the arc-shaped positioning protrusion 20b to the axis of the yoke 10 is X1, the vertical distance from the arc center of the arc-shaped positioning protrusion 20b to the axis of the yoke 10 is Y1, and Y1/x1=0.5, and Y1 is 8.5mm and Y1 is 8.9 mm.
In the embodiment of the present utility model, a yoke portion 10 and a plurality of shim teeth 20 are provided. The yoke portion 10 is annular, a driving hole 10a is formed in the yoke portion 10, a plurality of punching teeth 20 are arranged on the inner peripheral edge of the yoke portion 10 at intervals along the axial direction of the yoke portion 10, a punching groove 20a is formed between every two adjacent punching teeth 20, the punching groove 20a is communicated with the driving hole 10a through a notch, an arc-shaped positioning protrusion 20b extends from the bottom of the punching groove 20a towards the direction of the notch, when the stator punching is stacked, a user can observe whether the arc-shaped positioning protrusions 20b on the adjacent stator punching are in a staggered or overlapped state, the arc-shaped positioning protrusions 20b can be convenient for positioning the stator punching stacked mutually, so that the phenomenon that the adjacent stator punching is staggered is reduced, the size of the whole stator is ensured to be qualified after welding, and the resource waste is avoided.
The present utility model also provides an embodiment of a stator, as shown in fig. 7, where the stator includes a stator core 100 and a coil 200, the stator core is formed by stacking the stator laminations, the coil is wound on the lamination teeth 20, and the functions and structures of the stator laminations can be referred to the above embodiment, which is not described herein again.
The utility model also provides an embodiment of an electric machine comprising a housing, a rotor and a stator as described above, the stator being arranged in the housing, the rotor being rotatably arranged in the stator.
It should be noted that: the stator formed by laminating the stator punching sheets is applied to the motor, and the output power of the motor can be improved, the temperature rise of the motor in an application working condition interval can be reduced, and meanwhile, the resistance of the motor can be reduced by optimally designing the groove type of the punching sheet groove on the stator punching sheets.
The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present utility model.
Claims (10)
1. A stator lamination, comprising:
The yoke part is annular, and a driving hole is formed in the yoke part;
The plurality of punching teeth are arranged on the inner peripheral edge of the yoke part at intervals along the axial direction of the yoke part, and a punching groove is formed between every two adjacent punching teeth and is communicated with the driving hole through a notch, and the bottom of the punching groove extends towards the direction of the notch to form an arc-shaped positioning protrusion.
2. The stator plate of claim 1 wherein,
The number of the punching teeth is three, the three punching teeth comprise first punching teeth, second punching teeth and third punching teeth, the first punching teeth, the second punching teeth and the third punching teeth are sequentially arranged on the inner peripheral edge of the yoke part, a first punching groove is formed between the first punching teeth and the second punching teeth, a second punching groove is formed between the second punching teeth and the third punching teeth, and a third punching groove is formed between the third punching teeth and the first punching teeth.
3. The stator plate of claim 1 wherein,
The punching teeth comprise connecting portions and arc portions, one ends of the connecting portions are connected to the inner peripheral edge of the yoke portion, the other ends of the connecting portions are connected to the arc portions, the arc faces on the arc portions face the driving holes, and the arc portions of the punching teeth are enclosed at intervals to form the driving holes.
4. The stator plate of claim 3 wherein,
The notch of each punching slot is opposite to one punching tooth;
The width of the notch of the punching sheet groove is L1, the width of the connecting part of the punching sheet tooth is L2, and L1/L2 is more than or equal to 1.85 and less than or equal to 2.12.
5. The stator plate of claim 3 wherein,
The thickness of the arc-shaped part is L4, and L4 is more than or equal to 0.9mm and less than or equal to 1.1mm.
6. The stator plate of claim 1 wherein,
The yoke part is also provided with a limit groove and an opening communicated with the limit groove;
The distance between the bottom of the punching sheet groove and the outer periphery of the yoke part is L3, the distance from the top point of the arc-shaped positioning protrusion to the bottom of the limiting groove is L5, and L3/L5 is more than or equal to 0.428 and less than or equal to 0.538.
7. The stator plate of claim 1 wherein,
The arc radius of the arc-shaped positioning bulge is D1;
The bottom of the punching sheet groove is also provided with a first arc-shaped groove and a second arc-shaped groove, the arc-shaped positioning protrusion is positioned between the first arc-shaped groove and the second arc-shaped groove, the arc radius of the first arc-shaped groove is D2, and D1/D2 is more than or equal to 1.6 and less than or equal to 1.75.
8. The stator plate of claim 1 wherein,
The horizontal distance from the arc center of the arc-shaped positioning bulge to the axis of the yoke part is X1, X1 is less than or equal to 1.6mm and less than or equal to 1.8mm, the vertical distance from the arc center of the arc-shaped positioning bulge to the axis of the yoke part is Y1, and Y1 is less than or equal to 7.9mm and less than or equal to 8.1mm.
9. A stator comprising a stator lamination as defined in any one of claims 1 to 8, comprising a stator core and a coil, the stator core being laminated from the stator lamination, the coil being wound on the lamination teeth.
10. An electric machine, comprising: a housing, a rotor, and a stator as claimed in claim 9, the stator being disposed within the housing, the rotor being rotatably disposed within the stator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322493805.1U CN220874281U (en) | 2023-09-13 | 2023-09-13 | Stator punching sheet, stator and motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322493805.1U CN220874281U (en) | 2023-09-13 | 2023-09-13 | Stator punching sheet, stator and motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220874281U true CN220874281U (en) | 2024-04-30 |
Family
ID=90818341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322493805.1U Active CN220874281U (en) | 2023-09-13 | 2023-09-13 | Stator punching sheet, stator and motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220874281U (en) |
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2023
- 2023-09-13 CN CN202322493805.1U patent/CN220874281U/en active Active
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