Stator punching sheet assembly, stator core and motor

Abstract

The utility model discloses a stator punching sheet assembly, a stator core and a motor. The stator punching sheet assembly comprises a first punching sheet body and a second punching sheet body. Specifically, the first punching sheet body is arranged in an annular shape, and the first punching sheet body is provided with an installation groove. The second punching sheet body is detachably arranged in the mounting groove; wherein the iron loss value of the second punching sheet body is smaller than that of the first punching sheet body. The stator punching sheet can solve the problem of high cost of the stator punching sheet of the motor in the prior art.

Description

Technical Field

[0001] The present application relates to the field of motor technology, and in particular to a stator punching sheet assembly, a stator core and a motor. Background Art

[0002] Motors are widely used in all walks of life and are the heart of various devices that provide power. The motor stator is an important part of the motor.

[0003] At present, the stator core of the motor is mostly a whole-piece structure, which is made of stacked whole silicon steel sheets, wherein each silicon steel sheet is stamped from a complete round silicon steel sheet, which has a high cost and is difficult to meet the current market demand. Utility Model Content

[0004] The main purpose of the present application is to provide a stator punching sheet assembly, a stator core and a motor to solve the problem of high cost of stator punching sheets of motors in the prior art.

[0005] According to one aspect of the present application, a stator punching assembly is provided, comprising:

[0006] A first punch body, wherein the first punch body is arranged in a ring shape and a mounting groove is arranged on the first punch body;

[0007] A second punch body, the second punch body being detachably disposed in the mounting groove;

[0008] Wherein, the iron loss value of the second punching sheet body is smaller than the iron loss value of the first punching sheet body.

[0009] Furthermore, the installation groove comprises a plurality of installation grooves, and the plurality of installation grooves are arranged at intervals along the circumferential direction of the inner side of the first punching sheet body;

[0010] The second punching sheet bodies include a plurality of second punching sheet bodies, and the plurality of second punching sheet bodies are disposed in the plurality of mounting grooves in a one-to-one correspondence.

[0011] Furthermore, a connecting portion is also provided on the first punch body, and the connecting portion includes a plurality of connecting portions, and the plurality of connecting portions are arranged at intervals along the circumferential direction of the outer side of the first punch body.

[0012] Furthermore, the connecting portion includes a dovetail groove.

[0013] Furthermore, the first punch body is provided with ventilation holes, and the ventilation holes include a plurality of ventilation holes, which are spaced apart along the circumference of the first punch body.

[0014] Furthermore, the second punch body includes an inserting section and an extending section which are connected to each other, the inserting section is inserted into the mounting groove, and the extending section extends along the radial direction of the first punch body.

[0015] Furthermore, the plug-in section includes a first connecting section and a second connecting section, the first connecting section extends in a radial direction of the first punch body, and the second connecting section is connected to the first connecting section and extends in a radial direction perpendicular to the first punch body.

[0016] Furthermore, the extension section is provided with a raised section, and the raised section is provided at two opposite ends of the extension section.

[0017] On the other hand, the present application also provides a stator core, which includes the above-mentioned stator punching sheet assembly.

[0018] On the other hand, the present application also provides a motor, which includes the above-mentioned stator core.

[0019] Compared with the structure of the stator punching sheet in the prior art, the present application forms a complete stator punching sheet by inserting the second punching sheet body onto the first punching sheet body, which is beneficial to the processing and installation of the stator punching sheet. At the same time, the present application makes the iron loss value of the second punching sheet body smaller than the iron loss value of the first punching sheet body, which can not only maintain the motor performance but also reduce the overall production cost of the stator punching sheet assembly, which is beneficial to the subsequent large-scale use of the stator punching sheet assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0021] Figure 1 A schematic diagram of the structure of a stator punching assembly disclosed in an embodiment of the present application;

[0022] Figure 2 The attached embodiment disclosed in this application Figure 1 A magnified schematic diagram of the middle A area;

[0023] Figure 3 A schematic diagram of the structure of the first punch body disclosed in the embodiment of the present application;

[0024] Figure 4 This is a schematic diagram of the structure of the second punch body disclosed in the embodiment of the present application.

[0025] The above drawings include the following reference numerals:

[0026] 10. First punching sheet body; 20. Second punching sheet body; 21. Insertion section; 211. First connecting section; 212. Second connecting section; 22. Extension section; 221. Protruding section; 30. Mounting groove; 40. Connecting portion; 50. Ventilation hole; 60. Stator slot. DETAILED DESCRIPTION

[0027] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0028] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0029] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0030] As described in the background technology, most of the existing stator cores are made of stacked silicon steel sheets, and each silicon steel sheet is stamped from a complete round silicon steel sheet, which easily increases the cost of the stator core. To this end, the inventor of the present application has designed a new stator punching assembly, which can solve the problem of high cost of stator punching of motors in the prior art. The stator punching assembly of the present application will be described in detail below in conjunction with the accompanying drawings.

[0031] See also Figures 1 to 4 As shown, the present application provides a stator punching sheet assembly, which includes a first punching sheet body 10 and a second punching sheet body 20 .

[0032] Specifically, the first punch body 10 is arranged in an annular shape, and a mounting groove 30 is arranged on the first punch body 10; the second punch body 20 is detachably arranged in the mounting groove 30; wherein, the iron loss value of the second punch body 20 is less than the iron loss value of the first punch body 10. It can be understood that the specific values ​​of "the iron loss value of the first punch body 10" and "the iron loss value of the second punch body 20" are not specifically limited in this application, and can be set according to actual processing requirements, as long as it can ensure that the iron loss value of the second punch body 20 is less than the iron loss value of the first punch body 10.

[0033] In this embodiment, when the stator punching sheet assembly is actually processed, the second punching sheet body 20 can be inserted into the installation groove 30, so that the first punching sheet body 10 and the second punching sheet body 20 are spliced ​​to form a complete stator punching sheet, which is convenient for processing the stator punching sheet assembly. After assembly, since the iron loss value of the second punching sheet body 20 in this embodiment is less than the iron loss value of the first punching sheet body 10, that is, the first punching sheet body 10 is a high-loss low-performance silicon steel sheet, and the second punching sheet body 20 is a low-loss high-performance silicon steel sheet, in this way, the overall production cost of the stator punching sheet assembly can be reduced while maintaining the motor performance.

[0034] That is to say, compared with the structure of the stator punching sheet in the prior art, the present application forms a complete stator punching sheet by inserting the second punching sheet body 20 on the first punching sheet body 10, which is beneficial to the processing and installation of the stator punching sheet. At the same time, the present application makes the iron loss value of the second punching sheet body 20 smaller than the iron loss value of the first punching sheet body 10, which can not only maintain the motor performance but also reduce the overall production cost of the stator punching sheet assembly, which is beneficial to the subsequent large-scale use of the stator punching sheet assembly.

[0035] Further, see Figure 1 As shown, the mounting grooves 30 in this embodiment include a plurality of mounting grooves 30, which are arranged at intervals along the circumference of the inner side of the first punch body 10; the second punch body 20 includes a plurality of second punch bodies 20, which are arranged in a one-to-one correspondence in the plurality of mounting grooves 30. Specifically, the arrangement of the mounting grooves 30 provides a mounting position for the second punch body 20, and each second punch body 20 is inserted in each mounting groove 30, respectively. The entire installation process is convenient and fast, and the assembly efficiency is effectively improved. It can be understood that when the second punch body 20 is inserted in the mounting groove 30 to form a complete stator punch, the first punch body 10 is the stator yoke of the stator punch, and the second punch body 20 is the stator tooth of the stator punch.

[0036] Optionally, the "installation slots 30" in the present application may include two, three, four or more than four, and the "second punch body 20" may include two, three, four or more than four. The present application does not make specific limitations here. The number of the installation slots 30 can be set by those skilled in the art according to the actual needs of the motor. Figure 3 The figure shows a situation where there are twenty-four mounting grooves 30 and twenty-four second punching sheet bodies 20 .

[0037] Further, see Figure 1 As shown, in this embodiment, a connecting portion 40 is further provided on the first punching sheet body 10, and the connecting portion 40 includes a plurality of connecting portions 40, which are arranged at intervals along the circumferential direction of the outer side of the first punching sheet body 10. Specifically, the arrangement of the connecting portion 40 facilitates fixing a plurality of stator punching sheet assemblies together, effectively improving the stability and structural strength of the overall structure of the stator punching sheet assembly.

[0038] Optionally, the "connection part 40" in the present application may include two, three, four or more than four, which is not specifically limited in the present application. The number of the connection part 40 can be set by those skilled in the art according to the actual needs of the motor. Figure 1 The case where there are twelve connecting parts 40 is shown.

[0039] Further, see Figure 1 As shown, the connection portion 40 in this embodiment includes a dovetail groove. Such a configuration facilitates the fixed connection of multiple stator sheet assemblies together to form a stator core, effectively ensuring that the stator core has good stability during use. Of course, in other embodiments of the present application, the connection portion 40 also includes structures such as connection holes and connection grooves. As long as it is other deformation methods under the conception of the present application, they are all within the protection scope of the present application.

[0040] Further, see Figure 1 As shown, in this embodiment, ventilation holes 50 are further provided on the first punching body 10, and the ventilation holes 50 include a plurality of ventilation holes 50, which are arranged at intervals along the circumference of the first punching body 10. In this way, during the operation of the motor, the arrangement of the ventilation holes 50 can dissipate the heat generated by the stator core to the outside, prevent the motor from overheating, and extend the service life of the motor to a certain extent.

[0041] Optionally, the "ventilation holes 50" in the present application may include two, three, four or more than four, which is not specifically limited in the present application. The number of the ventilation holes 50 can be set by those skilled in the art according to the actual needs of the motor. The drawings in this embodiment show the situation when the number of ventilation holes 50 is twenty-four.

[0042] Further, see Figures 2 to 4As shown, the second punch body 20 in this embodiment includes an interlocking section 21 and an extension section 22 which are connected to each other, the interlocking section 21 is inserted in the mounting groove 30, and the extension section 22 extends along the radial direction of the first punch body 10. Specifically, the provision of the interlocking section 21 facilitates the fixed connection between the second punch body 20 and the first punch body 10, reduces the installation difficulty of the second punch body 20, and improves the assembly efficiency; the provision of the extension section 22 can provide an installation position for the coil, effectively concentrate the magnetic field, and improve the utilization rate of the magnetic field. At the same time, the provision of the extension section 22 can also enhance the mechanical strength of the stator punch assembly and prevent the stator punch assembly from being deformed during the high-speed operation of the motor.

[0043] Further, see Figure 2 as well as Figure 4 As shown, the plug-in section 21 in this embodiment includes a first connecting section 211 and a second connecting section 212, wherein the first connecting section 211 extends in the radial direction of the first punch body 10, and the second connecting section 212 is connected to the first connecting section 211 and extends in the radial direction perpendicular to the first punch body 10. Specifically, the provision of the first connecting section 211 is conducive to the fixed connection of the second punch body 20 to the first punch body 10; and the provision of the second connecting section 212 can limit the second punch body 20, preventing the second punch body 20 from being separated from the first punch body 10 during the high-speed operation of the motor, and further enhancing the connection strength of the second punch body 20.

[0044] Furthermore, in this embodiment, a stator slot 60 is provided between every two adjacent extension sections 22 , and the stator slot 60 is at least used to provide an installation space for the stator winding.

[0045] Further, see Figure 2 as well as Figure 4 As shown, the extension section 22 in this embodiment is provided with a protruding section 221, and the protruding section 221 is provided at two opposite ends of the extension section 22. Specifically, since a stator slot 60 is provided between two adjacent extension sections 22 in this embodiment, when the protruding section 221 is provided at two opposite ends of the extension section 22, the protruding section 221 is located in the stator slot 60, that is, there are two opposite protruding sections 221 in one stator slot 60. In this way, the two opposite protruding sections 221 in the stator slot 60 can be used to clamp the slot wedge, so that the stator winding is fixed in the stator slot 60.

[0046] In combination with the above-mentioned embodiments, it can be known that the stator punching sheet assembly in the present application includes a first punching sheet body 10 and a second punching sheet body 20. Such a configuration facilitates the processing and installation of the stator punching sheets, and the iron loss value of the first punching sheet body 10 in the present application is greater than the iron loss value of the second punching sheet body 20. In this way, the overall production cost of the stator punching sheet assembly can be reduced while maintaining the motor performance, which is conducive to the subsequent large-scale use of the stator punching sheet assembly.

[0047] On the other hand, the embodiment of the present application further provides a stator core, which includes the above-mentioned stator punching assembly, and therefore, the stator core includes all the technical effects of the above-mentioned stator punching assembly. Since the technical effects of the stator punching assembly have been described in detail above, they will not be repeated here.

[0048] On the other hand, the embodiment of the present application further provides a motor, which includes the above-mentioned stator core, and thus the motor includes all the technical effects of the above-mentioned stator core. Since the technical effects of the stator core have been described in detail above, they will not be repeated here.

[0049] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0050] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0051] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A stator punching assembly, characterized in that: include: A first punch body (10), the first punch body (10) is arranged in a ring shape, and a mounting groove (30) is arranged on the first punch body (10); a second punching sheet body (20), the second punching sheet body (20) being detachably disposed in the mounting groove (30); Wherein, the iron loss value of the second punching sheet body (20) is smaller than the iron loss value of the first punching sheet body (10).

2. The stator sheet assembly according to claim 1, characterized in that: The mounting grooves (30) include a plurality of mounting grooves (30), and the plurality of mounting grooves (30) are arranged at intervals along the circumferential direction of the inner side of the first punching sheet body (10); The second punching sheet body (20) comprises a plurality of second punching sheet bodies (20), and the plurality of second punching sheet bodies (20) are arranged in a one-to-one correspondence in the plurality of mounting grooves (30).

3. The stator sheet assembly according to claim 1, characterized in that: The first punch body (10) is also provided with a connecting portion (40), and the connecting portion (40) includes a plurality of connecting portions (40), which are arranged at intervals along the circumferential direction of the outer side of the first punch body (10).

4. The stator sheet assembly according to claim 3, characterized in that: The connecting portion (40) comprises a dovetail groove.

5. The stator sheet assembly according to claim 1, characterized in that: The first punch body (10) is also provided with ventilation holes (50), and the ventilation holes (50) include a plurality of ventilation holes (50), and the plurality of ventilation holes (50) are arranged at intervals along the circumference of the first punch body (10).

6. The stator sheet assembly according to claim 1, characterized in that: The second punch body (20) comprises an inserting section (21) and an extending section (22) which are connected to each other, the inserting section (21) is inserted into the mounting groove (30), and the extending section (22) extends along the radial direction of the first punch body (10).

7. The stator sheet assembly according to claim 6, characterized in that: The plug-in section (21) comprises a first connecting section (211) and a second connecting section (212), wherein the first connecting section (211) extends in a radial direction of the first punch body (10), and the second connecting section (212) is connected to the first connecting section (211) and extends in a radial direction perpendicular to the first punch body (10).

8. The stator sheet assembly according to claim 6, characterized in that: The extension section (22) is provided with a raised section (221), and the raised section (221) is arranged at two opposite ends of the extension section (22).

9. A stator core, characterized in that: The stator core comprises the stator sheet assembly according to any one of claims 1 to 8.

10. A motor, characterized in that: The motor comprises the stator core according to claim 9.

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