Annular stator core

Abstract

The utility model relates to an annular stator iron core, which comprises spliced iron cores, each spliced iron core is provided with a winding groove, one side of each spliced iron core is provided with a connecting part used for connecting the spliced iron cores on the adjacent side, and the other side of each spliced iron core is provided with a connecting groove used for connecting the spliced iron cores on the adjacent side. A first notch is formed in one side of the lower end face of the spliced iron core, and a first welding side edge is arranged in the first notch; a second notch is formed in the other side of the lower end face of the spliced iron core, and a second welding side edge is arranged in the second notch. Every two adjacent block iron cores are connected together in a meshed mode through the connecting parts and the connecting grooves, and a plurality of block iron cores are combined to form an annular stator iron core. The first notch and the second notch are closed to form a key groove, the first welding side edge and the second welding side edge are closed to form a welding part, and two adjacent spliced iron cores are fixed through welding. In conclusion, the welding part is arranged in the key groove, so that the effective space utilization is maximized.

Description

Technical Field

[0001] The utility model relates to an annular stator core. Background Art

[0002] The annular stator core is composed of multiple block cores. In order to ensure that the torque can be transmitted between the annular stator core and the core seat, the key design is used to ensure that the torque can be transmitted between the annular stator core and the core seat, ensuring a stable connection between the stator core and the core seat, while enabling them to bear the torque load together.

[0003] Furthermore, when the contact area between the two components increases, heat is more easily transferred from one component to another, thereby promoting uniform distribution and dissipation of heat, thereby ensuring that the contact between the core seat and the annular stator core is closer and the contact area is larger, which is beneficial to heat conduction and heat dissipation.

[0004] In the prior art, in order to ensure that the annular stator core can transmit torque, have a stable connection, and facilitate heat conduction and heat dissipation, one block core is generally provided with a key slot, while the other block core is not provided with a key slot. The two block cores are assembled into an annular stator core, and two adjacent block cores are welded together, with space reserved at the welding point to prevent the welding point from contacting the core seat.

[0005] The prior art has the following disadvantages:

[0006] 1. Two sets of molds need to be designed for the two types of block cores, and the two sets of molds need to be designed as high-precision molds to avoid affecting the splicing quality and increasing production costs.

[0007] 2. Since the keyway does not contact the core seat, the heat dissipation effect is reduced. Since the reserved space at the welding point does not contact the core seat, the heat dissipation effect is reduced. The above two situations are combined, resulting in a greatly reduced effective contact area between the core seat and the annular stator core, and poor heat dissipation effect. Utility Model Content

[0008] The utility model aims to provide an annular stator core which is simple to splice two adjacent block cores, automatically forms a keyway and a welding part after splicing, and the welding part is located in the keyway, does not occupy additional space of the block core, has low cost and good heat dissipation effect.

[0009] The purpose of the utility model is achieved in this way:

[0010] An annular stator core comprises a block core, wherein the block core is provided with a winding groove, one side of the block core is provided with a connecting portion for connecting the block core on the adjacent side, and the other side of the block core is provided with a connecting groove for connecting the block core adjacent to the side;

[0011] A first notch is provided on one side of the lower end surface of the block core, and a first welding side edge is provided in the first notch;

[0012] A second notch is arranged on the other side of the lower end surface of the block core, and a second welding side edge is arranged in the second notch.

[0013] Two adjacent block cores are meshed and connected together through the connecting portion and the connecting groove, and a number of block cores are combined into an annular stator core;

[0014] The first notch and the second notch are put together to form a keyway, and the first welding side and the second welding side are put together to form a welding position, and two adjacent block cores are fixed by welding.

[0015] Simplified mold design: Using a piece of iron core avoids the problem of designing two sets of molds in the existing technology, thereby reducing production costs. This design further simplifies the production process.

[0016] Simplified assembly process: Using a piece core simplifies the assembly process, reduces the number of components, reduces assembly costs, and can improve assembly efficiency and accuracy.

[0017] Adjacent block cores are connected together by meshing with each other through the connection part and the connection groove to form a continuous annular stator core. This connection method can ensure the integrity and stability of the core, and the first welding side and the second welding side are connected to form a welding part. During the welding process, by melting the welding part, the two adjacent block cores can be welded and fixed, which further strengthens the connection of the core and improves the stability and reliability of the structure.

[0018] Since the welding part is located in the keyway, it will not take up extra space in the block core. By placing the welding part in the keyway, the contact area between the core and the core seat is increased, which helps to improve the heat dissipation effect. Such a design can effectively promote the conduction and dissipation of heat, thereby improving the heat dissipation performance of the entire system.

[0019] In summary, placing the welding part in the keyway not only maximizes the effective space utilization, but also helps to improve the heat dissipation effect and enhance the connection stability. It also simplifies the design and manufacturing process, bringing many advantages to the performance and reliability of the annular stator core.

[0020] The purpose of the utility model can also be solved by the following technical measures:

[0021] Furthermore, a first groove is provided at a position of the first notch close to an outlet edge thereof, and a portion between the outlet edge of the first notch and the first groove forms the first welding side.

[0022] Increased connection stability: By providing a better welding surface, the weld bead can increase the stability and reliability of the connection. The formation of the weld bead ensures sufficient filling of the welding area and reduces air gaps during the welding process, thereby improving the quality of the weld and the strength of the connection.

[0023] Reduced manufacturing costs: This design can be directly implemented in the manufacturing process of the segmented core without the need for additional processes or materials. At the same time, by improving the welding quality and connection stability, the subsequent inspection and maintenance costs can be reduced.

[0024] Furthermore, a second groove is provided near the outlet edge of the second notch, and a portion between the outlet edge of the second notch and the second groove forms the second welding side.

[0025] Increased connection stability: By providing a better welding surface, the weld bead can increase the stability and reliability of the connection. The formation of the weld bead ensures sufficient filling of the welding area and reduces air gaps during the welding process, thereby improving the quality of the weld and the strength of the connection.

[0026] Reduced manufacturing costs: This design can be directly implemented in the manufacturing process of the segmented core without the need for additional processes or materials. At the same time, by improving the welding quality and connection stability, the subsequent inspection and maintenance costs can be reduced.

[0027] Furthermore, the height of the welded portion after melting is lower than the bottom surface of the keyway.

[0028] Since the height of the welding part is lower than the bottom surface of the keyway, the weld will not protrude, avoiding the possibility of the weld contacting the core seat. This design can ensure that the welding part will not interfere with the installation of the core seat, thereby improving the stability and reliability of the system. Avoiding the protrusion of the weld can reduce the friction and wear between the core seat and the core seat, extending the service life of the system. This is especially important for motors or generators that require long-term stable operation. This design simplifies the post-welding processing, does not require additional grinding or trimming, will not affect the subsequent processing process, and reduces the complexity and cost of the manufacturing process.

[0029] Furthermore, it also includes an iron core seat, the iron core seat is provided with a notch, and a key is embedded between the keyway of the block iron core and the notch.

[0030] Strengthen the connection: By notching the core holder and inserting a key between the keyway and the notch, a tighter connection between the core holder and the annular stator core can be ensured. The presence of the key increases the firmness of the connection, making it more difficult to separate or move, thereby improving the stability of the connection.

[0031] Prevent relative movement: The key setting can effectively prevent relative movement between the core holder and the annular stator core. This helps to maintain the stability of the connection and avoid loosening or falling off during operation.

[0032] Improve overall performance: Ensuring a tight connection between the core holder and the ring-shaped stator core helps improve the performance and reliability of the entire system. This tight connection ensures the stability of the magnetic circuit, thereby improving the efficiency and performance of the motor or generator.

[0033] In summary, by notching the core seat and embedding the key between the keyway and the notch, a tighter connection between the core seat and the annular stator core can be ensured, thereby improving the stability and reliability of the entire system.

[0034] The beneficial effects of the utility model are as follows:

[0035] The utility model adopts a block iron core, avoiding the problem of needing to design two sets of molds in the prior art, thereby reducing production costs. Such a design further simplifies the production process, and the use of a block iron core simplifies the assembly process, reduces the number of components, reduces assembly costs, and can improve assembly efficiency and accuracy.

[0036] In the utility model, adjacent block cores are connected together by meshing with each other through the connecting portion and the connecting groove to form a continuous annular stator core. This connection method can ensure the integrity and stability of the core, and the first welding side and the second welding side are connected to form a welding part. During the welding process, by melting the welding part, the two adjacent block cores can be welded and fixed, which further strengthens the connection of the core and improves the stability and reliability of the structure.

[0037] In the utility model, since the welding part is located in the keyway, it does not occupy the extra space of the block core. By placing the welding part in the keyway, the contact area between the core and the core seat is increased, which helps to improve the heat dissipation effect. Such a design can effectively promote the conduction and dissipation of heat, thereby improving the heat dissipation performance of the entire system. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 Schematic diagram of the block core.

[0039] Figure 2 This is a schematic diagram of the block core from another angle.

[0040] Figure 3 A top view of the core block.

[0041] Figure 4 Schematic diagram of the annular stator core.

[0042] Figure 5 for Figure 4 A magnified view of part A.

[0043] Figure 6 A top view of the annular stator core.

[0044] Figure 7 for Figure 6 Enlarged view of part B. DETAILED DESCRIPTION

[0045] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0046] Example, combined with Figures 1 to 7 As shown, an annular stator core comprises a plurality of block cores 1, wherein the block cores 1 are provided with winding grooves 2, one side of the block core 1 is provided with a connecting portion 3 for connecting the block cores on the adjacent side, and the other side of the block core 1 is provided with a connecting groove 4 for connecting the adjacent block cores on this side, one side of the lower end surface of the block core is provided with a first notch 5, a first welding side edge 51 is provided in the first notch 5, and the other side of the lower end surface of the block core is provided with a second notch 6, a second welding side edge 61 is provided in the second notch 6.

[0047] Two adjacent block cores are meshed and connected together through the connecting portion 3 and the connecting groove 4, and a number of block cores are combined into an annular stator core;

[0048] The first notch 5 and the second notch 6 are put together to form a keyway 7, and the first welding side edge 51 and the second welding side edge 61 are put together to form a welding portion 8, and two adjacent core blocks 1 are fixed by welding.

[0049] Furthermore, a first groove 52 is provided at a position of the first notch 5 close to its outlet edge, and a portion between the outlet edge of the first notch 5 and the first groove 52 forms the first welding side edge 51 .

[0050] Furthermore, a second groove 62 is provided near the outlet edge of the second notch 6 , and a portion between the outlet edge of the second notch 6 and the second groove 62 forms the second welding side edge 61 .

[0051] Furthermore, the height of the melted welding portion 8 is lower than the bottom surface of the keyway 7 .

[0052] Furthermore, it also includes a core seat (not shown in the figure), the core seat is provided with a slot (not shown in the figure), and a key (not shown in the figure) is embedded between the key slot 7 of the block core and the slot.

Claims

1. An annular stator core, comprising a block core, characterized in that: The block core is provided with a winding groove, one side of the block core is provided with a connecting portion for connecting the block core on the adjacent side, and the other side of the block core is provided with a connecting groove for connecting the adjacent block core on the side; A first notch is provided on one side of the lower end surface of the block core, and a first welding side edge is provided in the first notch; A second notch is provided on the other side of the lower end surface of the block core, and a second welding side edge is provided in the second notch; Two adjacent block cores are meshed and connected together through the connecting portion and the connecting groove, and a number of block cores are combined into an annular stator core; The first notch and the second notch are put together to form a keyway, and the first welding side and the second welding side are put together to form a welding position, and two adjacent block cores are fixed by welding.

2. The annular stator core according to claim 1, characterized in that: A first groove is arranged near the outlet edge of the first notch, and a portion between the outlet edge of the first notch and the first groove forms the first welding side.

3. The annular stator core according to claim 1, characterized in that: A second groove is arranged near the outlet edge of the second notch, and a portion between the outlet edge of the second notch and the second groove forms the second welding side.

4. The annular stator core according to claim 1, characterized in that: The height of the welded part after melting is lower than the bottom surface of the keyway.

5. The annular stator core according to claim 1, characterized in that: It also includes an iron core seat, which is provided with a notch, and a key is embedded between the keyway of the block iron core and the notch of the iron core seat.

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