CN209963838U - Punching sheet of motor - Google Patents
Punching sheet of motor Download PDFInfo
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- CN209963838U CN209963838U CN201920850612.8U CN201920850612U CN209963838U CN 209963838 U CN209963838 U CN 209963838U CN 201920850612 U CN201920850612 U CN 201920850612U CN 209963838 U CN209963838 U CN 209963838U
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- punching sheet
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Abstract
The utility model belongs to the technical field of the motor structure, concretely relates to towards piece of motor. The stator punching sheet comprises a stator punching sheet and a rotor punching sheet positioned in the center of the stator punching sheet, wherein the rotor punching sheet is of a circular structure; the stator punching sheet is square, a circular stator inner hole for accommodating the rotor punching sheet is formed in the center of the square, four corners of the inner outline and the outer outline of the square are respectively provided with an arc, a stator magnetic pole is formed between any two adjacent arcs of the stator punching sheet and extends inwards along the square inner outline of the stator punching sheet, two sides of the stator magnetic pole are respectively provided with a stator pole shoe, and a stator slot is formed between the stator pole shoe and the square outline of the stator punching sheet. This application improves through appearance and the magnetic circuit structure towards the piece, and the motor that adopts this towards piece structure production is efficient, longe-lived, specially adapted electric tool motors such as series excited air compressor machine.
Description
Technical Field
The utility model belongs to the technical field of the motor structure, concretely relates to towards piece of motor.
Background
The rotating part of the motor rotor in the motor is formed by overlapping silicon steel sheets, and the rotor is a mechanism for outputting the power of the motor. The fixed part of the motor stator in the motor is formed by overlapping silicon steel sheets, and a coil winding is embedded to generate a rotating magnetic field to push the rotor to rotate. The punching sheet used by the electric tool motor such as the series air compressor and the like is formed by punching silicon steel sheets into punching sheets with different specifications so as to be suitable for the stator and the rotor of the motor with different powers, and the structure of the current punching sheet is unreasonable, so that the three aspects of performance, service life and cost cannot be considered.
SUMMERY OF THE UTILITY MODEL
Problem to among the prior art, the utility model provides a towards piece of motor, this application improves through appearance and the magnetic circuit structure towards the piece, adopts this motor efficiency height, the longe-lived towards piece structure production, specially adapted on electric tool motors such as series excited air compressor machine.
In order to achieve the purpose, the utility model is realized by the following technical scheme:
the utility model provides a towards piece of motor, its special character lies in:
the stator punching sheet comprises a stator punching sheet 1 and a rotor punching sheet 10 positioned in the center of the stator punching sheet 1, wherein the rotor punching sheet 10 is of a circular structure;
the stator punching sheet 1 is square, a stator inner hole 2 for accommodating the rotor punching sheet 10 is formed in the center of the square, four corners of the square stator punching sheet 1 are respectively provided with an arc, two sides of the stator punching sheet 1, which are opposite to each other, extend inwards along the square inner contour of the stator punching sheet 1 to form a stator magnetic pole 4, two sides of the stator magnetic pole 4 are respectively provided with a stator pole shoe 6, and a stator slot 3 is formed between the stator pole shoe 6 and the square contour of the stator punching sheet 1.
Further, the stator inner hole 2 is formed by an eccentric circular arc.
Further, the rotor sheet 10 is located between the two stator poles 4 of the stator sheet 1, and the two stator pole shoes 6 of each stator pole 4 are located on the outer contour of the rotor sheet 10.
Further, the stator slot 3 communicates with the stator bore 2.
Further, stator yokes 5 are respectively formed on the square structures on two sides of the two stator poles 4 of the stator punching sheet 1.
Further, one surface of the stator pole shoe 6 facing the rotor punching sheet 10 is arc-shaped.
Further, an uneven air gap is formed between the stator punching sheet 1 and the rotor punching sheet 10, a middle air gap is formed at the position of the stator magnetic pole, two side air gaps are formed at the position of the stator magnetic pole, and the air gaps from the middle air gap to the two sides are gradually increased.
Compared with the prior art, the utility model, its useful part lies in:
the magnetic circuit structure that this application improved adopts different sizes to make the magnetic slot distribute more rationally to stator yoke, stator magnetic pole, stator slot, and the design of stator punching has optimized the magnetic circuit and the magnetic density distribution of motor, and the materials are saved more, and the life-span of motor is longer, and the performance is more stable, and the cost is lower.
Drawings
Fig. 1 is a schematic structural diagram of the present application.
Fig. 2 is a schematic structural diagram of a stator punching sheet of the present application.
Fig. 3 is a schematic structural diagram of a rotor sheet according to the present application.
Description of the labeling: 1. Stator punching sheet, 2, stator inner hole, 3, stator slot, 4, stator magnetic pole, 5, stator yoke, 6, stator pole shoe, 7, inner contour, 8, circular arc, 9, tooth base, 10, rotor punching sheet, 11, tooth, 12, middle air gap, 13 and two-side air gap.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings.
Example 1
As shown in fig. 1, the utility model discloses motor punching includes stator punching 1 and rotor punching 10, and the body of stator punching 1 is square in this embodiment, through circular arc 8 transitional coupling between the square adjacent limit.
A stator inner hole 2 is formed in the center of the stator punching sheet 1, a stator groove 3 is formed on the inner side of an inner outline 7 of the stator punching sheet 1, and the stator groove 3 is communicated with the stator inner hole 2.
The stator punching sheet 1 comprises a stator magnetic pole 4 and a stator yoke 5 which is connected with two poles of the stator magnetic pole 4, two poles of the stator magnetic pole 4 are respectively provided with a stator pole shoe 6 in the direction pointing to a stator inner hole 2, the stator pole shoe 6 is positioned between a stator slot 3 and the stator inner hole 2, one surface of the stator slot 3 is arc-shaped, the surface facing a rotor punching sheet 10 is arc-shaped, and an arc-shaped part is formed between the stator pole shoes 6 positioned on the same stator magnetic pole 4.
For the series motor punching sheet of the utility model, the size of the stator punching sheet is adjusted, including the thickness C of the tip end of the stator pole shoe 6; the thickness H of the stator yoke 5 of the motor; the stator pole shoe 6 is connected with the stator yoke 5 through a diagonal thickness G, the stator magnetic pole 4 is inwards recessed in the outer contour of the square stator punching sheet, and the diagonal thickness G is the distance from the intersection position of the stator pole shoe and the stator magnetic pole to the recessed position; the thickness a of the bottom of the stator slot 3, i.e. the width a of both sides of each stator pole 4. The thickness H of the stator yoke 5 of the motor is verified to directly correspond to the efficiency of the motor, and the thickness H of the stator yoke 5 is designed into different sizes according to the magnetic density distribution of the stator poles 4 and the stator yoke 5 and the utilization of the effective area of the stator slots 3, wherein the three sizes are H1, H2 and H3, H1=8.85mm, H2=8.8mm and H3=8.5mm in the embodiment. The design can improve the efficiency of the motor and reduce energy loss.
The utility model discloses motor punching, the size of rotor punching 10 includes the centre bore diameter D of rotor punching 10, and its size is applicable to general size motor shaft; diameter E on rotor sheet 10; teeth 11 on the electronic punching sheet 10 in the circumferential direction and the tooth pitch thickness B between adjacent teeth; the teeth 11 form a tooth base 9 on the rotor sheet, and F is the distance from the outer edge of the central hole to the tooth base 9. The distance F on the rotor sheet 10 is related to the thicknesses H1, H2, H3 according to the following equation: f = H × K, K1, K2, K3 are three constants, the optimum being K1=0.9887, K2=0.9943, K3=1.0294, F = (E-D)/2, respectively. For the current motor, it was calculated that F = H1 × K1= H2 × K2= H3 × K3=8.75 mm.
As shown in fig. 1, when the diameter I of the circular arc 8 is 95mm (so-called 95 motor lamination), the width a of the stator pole 4 is 24.5mm, and the pole arc angle α of the stator pole shoe 6 is 110 degrees.
The utility model discloses a stator punching sheet, rotor punching sheet adopt the mould punching press, as shown in figure 2, stator hole 2 is not circular structure, but constitute by eccentric circular arc, as shown in figure 2, the radius of eccentric circular arc is L, the eccentric circular arc radius of the punching sheet of different models is different, the eccentricity M is 1-2mm, the utmost point department that adopts this kind of stator pole shoe crescent, air gap between stator and the rotor that from this forms, more be favorable to the optimization and the rational distribution of magnetic density of magnetic circuit than adopting the circular shape stator hole, be favorable to improving the switching-over performance of motor, the life-span of improvement motor.
The air gaps of the stator and rotor punching sheets are designed to be uneven, as shown in fig. 3, the middle air gap 12 is 0.5mm, the air gaps 13 on the two sides are 1mm, and the air gaps from the middle to the two sides gradually increase.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain a separate embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (7)
1. A punching sheet of a motor is characterized in that:
the stator punching sheet comprises a stator punching sheet (1) and a rotor punching sheet (10) positioned in the center of the stator punching sheet (1), wherein the rotor punching sheet (10) is of a circular structure;
stator punching (1) is square, sets up stator hole (2) that hold rotor punching (10) at square center, sets up the circular arc respectively in the four corners of square stator punching (1), and at two arbitrary relative sides of stator punching (1), inwards extend along stator punching (1) square interior profile and form stator magnetic pole (4), and the both sides of stator magnetic pole (4) are stator pole shoe (6) respectively, form stator slot (3) between stator pole shoe (6) and the square profile of stator punching (1).
2. A punch for an electric motor as recited in claim 1, wherein:
the stator inner hole (2) is formed by an eccentric arc.
3. A punch for an electric motor as recited in claim 2, wherein: the rotor punching sheet (10) is located between the two stator magnetic poles (4) of the stator punching sheet (1), and the two stator pole shoes (6) of each stator magnetic pole (4) are located on the outer contour of the rotor punching sheet (10).
4. A punch for an electric motor as recited in claim 3, wherein: the stator slot (3) is communicated with the stator inner hole (2).
5. The lamination of an electric motor as recited in claim 4, wherein: stator yokes (5) are respectively formed on square structures on two sides of two stator magnetic poles (4) of the stator punching sheet (1).
6. A lamination for an electric motor as claimed in claim 5, wherein: and one surface of the stator pole shoe (6) facing the rotor punching sheet (10) is arc-shaped.
7. The lamination of an electric motor as recited in claim 6, further comprising: uneven air gaps are formed between the stator punching sheets and the rotor punching sheets (10), middle air gaps are formed at the positions of the stator punching sheets and the stator magnetic poles (4), air gaps at two sides are formed at the positions of the stator punching sheets and the stator slots (3), and the air gaps from the middle air gaps to the two sides are gradually increased.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920850612.8U CN209963838U (en) | 2019-06-06 | 2019-06-06 | Punching sheet of motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920850612.8U CN209963838U (en) | 2019-06-06 | 2019-06-06 | Punching sheet of motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209963838U true CN209963838U (en) | 2020-01-17 |
Family
ID=69247322
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920850612.8U Active CN209963838U (en) | 2019-06-06 | 2019-06-06 | Punching sheet of motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209963838U (en) |
-
2019
- 2019-06-06 CN CN201920850612.8U patent/CN209963838U/en active Active
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