Stator core fixing device

Abstract

The utility model relates to the technical field of motor stator core lamination assembly, in particular to a stator core fixing device. The structure comprises an iron core set, the upper end and the lower end of the iron core set are each provided with a pressing plate, the pressing plates are tightly attached to the upper end face and the lower end face of the iron core set, multiple iron core rods are arranged on the outer ring of the iron core set in the circumferential direction, the inner side surfaces of the iron core rods are tightly attached to the surfaces of the outer rings of multiple iron core pieces, and radial fixing of the iron core set is achieved through the iron core rods. The two pressing plates are welded to the two ends of the iron core rod respectively, the iron core rod and the two pressing plates are welded into a whole, and fixing of the iron core set is achieved. According to the utility model, the pressing ring with the pressing claws is adopted to replace an original outer spacer structure to fix the stator iron core, so that the fixing reliability of the stator iron core is improved; meanwhile, the structures of the pressing rings and the pressing claws can increase the pressing contact area of the pressing plate and the iron core pieces, and the deformation condition of the iron core pieces is avoided.

Description

Technical Field

[0001] This utility model relates to the field of motor stator core lamination assembly technology, and in particular to a stator core fixing device. Background Technology

[0002] In the existing technology, the stator core of the motor is made of multiple layers of silicon steel sheets. The multiple layers of silicon steel sheets need to be effectively fixed to ensure that the stator core will not loosen or move due to force when the motor is running, thus ensuring the performance and life of the motor.

[0003] In existing technologies, such as Figure 1 As shown, the multi-layer silicon steel sheets of the motor stator core are clamped and fixed by clamping rings 3 on both sides and outer spacers 4. The assembly process is complex, and the contact area between the fixing structure of clamping rings 3 and outer spacers 4 and the outer silicon steel sheets is small, making the outer silicon steel sheets prone to deformation due to uneven stress. At the same time, the fixing structure of clamping rings 3 and outer spacers 4 occupies a lot of internal space in the motor, affecting the overall performance and service life of the motor. Utility Model Content

[0004] This application addresses the shortcomings of existing production technologies by providing a stator core fixing device. It replaces the original outer spacer structure with a pressure ring equipped with pressure claws to fix the stator core, improving the reliability of stator core fixing. Simultaneously, it avoids core lamination deformation, reduces the space occupied, increases the safety distance, and ensures motor performance and service life.

[0005] The technical solution adopted in this utility model is as follows:

[0006] A stator core fixing device includes a core assembly. A clamping plate is respectively disposed at the upper and lower ends of the core assembly, and the clamping plates are tightly attached to the upper and lower end faces of the core assembly. Multiple core rods are disposed around the outer ring of the core assembly along the circumferential direction. The inner surface of each core rod is tightly attached to the outer ring surface of multiple core plates, thus achieving radial fixing of the core assembly. Two clamping plates are welded to each end of each core rod, and the core rods and the two clamping plates are welded together to fix the core assembly. Each clamping plate includes a clamping ring, and a pressure ring is welded to one end face of the clamping ring facing one side of the core plate. One end face of the pressure ring is tightly attached to the surface of the core assembly, thus achieving axial fixing of the core assembly.

[0007] Furthermore, the core assembly includes multiple annular core plates, which are stacked one on top of the other, with the outer surface of each core plate in close contact with the inner surface of the core rod.

[0008] Furthermore, multiple iron core bars are arranged in parallel at equal intervals.

[0009] Furthermore, the clamping ring has a circular ring structure.

[0010] Furthermore, the pressure ring has a circular ring structure.

[0011] Furthermore, the inner ring of the pressure ring is provided with multiple pressure claws, which are integrally formed with the pressure ring. The multiple pressure claws are equidistantly distributed along the circumferential direction, and the lower end faces of the multiple pressure claws are pressed against the multiple stator slot blocks of the inner ring of the core assembly.

[0012] Furthermore, a partition groove is provided between two adjacent pressure claws to separate them.

[0013] The beneficial effects of this utility model are as follows:

[0014] This invention uses a pressure ring with pressure claws to replace the original outer spacer structure for fixing the stator core, improving the reliability of stator core fixing. At the same time, the structure of the pressure ring and pressure claws can increase the contact area between the clamping plate and the core sheet, avoiding deformation of the core sheet. The structure of the pressure ring and pressure claws can greatly shorten the axial installation space of the core assembly in the motor housing, increase the safety distance between the two ends of the core assembly and the two ends of the motor housing, and ensure motor performance and service life. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the existing motor stator core fixing structure.

[0016] Figure 2 This is a three-dimensional structural diagram of the present invention.

[0017] Figure 3 This is a structural diagram of the clamping plate of this utility model.

[0018] Among them: 1. Iron core sheet; 2. Iron core bar; 3. Clamping ring; 4. Outer partition; 5. Pressure ring; 6. Pressure claw; 7. Spacing groove. Detailed Implementation

[0019] The specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0020] like Figure 2 As shown, a stator core fixing device includes a core assembly. A clamping plate is disposed at each of the upper and lower ends of the core assembly, and the clamping plates are tightly attached to the upper and lower end faces of the core assembly. Multiple core rods 2 are arranged circumferentially around the outer ring of the core assembly, and the multiple core rods 2 are arranged parallel to each other at equal intervals. The inner surface of the core rod 2 is tightly attached to the outer surface of the multiple core plates 1, thereby achieving radial fixing of the core assembly. Two clamping plates are welded to each end of the core rod 2, and the core rod 2 and the two clamping plates are welded together to achieve fixing of the core assembly.

[0021] like Figure 2As shown, the core assembly includes multiple annular core pieces 1, which are stacked one on top of the other, with the outer surface of the core pieces 1 in close contact with the inner surface of the core rod 2.

[0022] like Figure 2 and Figure 3 As shown, the clamping plate includes a ring-shaped clamping ring 3 with a circular structure. A ring-shaped pressure ring 5 with a circular structure is welded to the end face of the clamping ring 3 facing the core assembly. The end face of the pressure ring 5 is tightly attached to the surface of the core assembly to achieve axial fixation of the core assembly.

[0023] like Figure 2 and Figure 3 As shown, the inner ring of the pressure ring 5 is provided with multiple pressure claws 6, which are integrally formed with the pressure ring 5. The multiple pressure claws 6 are equidistantly distributed along the circumferential direction. The lower end faces of the multiple pressure claws 6 press against the multiple protruding stator slots on the inner ring of the core assembly, making the clamping and fixing of the core assembly more reliable. A partition groove 7 is provided between two adjacent pressure claws 6 to separate the two adjacent pressure claws 6.

[0024] like Figure 2 and Figure 3 As shown, the end of the core rod 2 is welded to the axial end face of the clamping ring 3, and the pressure ring 5 is located in the inner ring of the core rod 2.

[0025] This invention uses a pressure ring with pressure claws to replace the original outer spacer structure for fixing the stator core. Compared with the existing outer spacer 4 structure, the structure of the pressure ring 5 and pressure claws 6 increases the contact area between the clamping plate and the core plate 1, improving the clamping effect and making the fixing of the core plate 1 more reliable. Simultaneously, the structure of the pressure ring 5 and pressure claws 6 significantly shortens the axial installation space of the core assembly within the motor housing, increasing the safe distance between the two ends of the core assembly and the two ends of the motor housing. Compared with the existing outer spacer 4 structure, the structure of the pressure ring 5 and pressure claws 6 simplifies assembly and improves production efficiency.

[0026] The above description is an explanation of the present utility model and not a limitation thereof. The scope of the present utility model is defined by the claims. Within the protection scope of the present utility model, any form of modification may be made.

Claims

1. A stator core fixing device, comprising a core assembly, wherein a clamping plate is respectively provided at the upper and lower ends of the core assembly, the clamping plate being tightly attached to the upper and lower end surfaces of the core assembly, and a plurality of core rods (2) are arranged along the circumferential direction on the outer ring of the core assembly, the inner surface of the core rods (2) being tightly attached to the outer ring surface of the plurality of core plates (1), the core rods (2) achieving radial fixing of the core assembly, characterized in that: Two pressing plate members are welded at two ends of the iron core rod (2) respectively, the iron core rod (2) and the two pressing plate members are welded into an integrated body to realize the fixation of the iron core group; the pressing plate member comprises a clamping ring (3), the clamping ring (3) is welded with a pressing ring (5) on a side end face facing the iron core sheet (1), the side end face of the pressing ring (5) is tightly attached to the surface of the iron core group to realize the axial fixation of the iron core group.

2. A stator core fixation device as claimed in claim 1, characterized in that: The iron core group comprises a plurality of iron core sheets (1) in a circular ring structure, the plurality of iron core sheets (1) are arranged in a stacked manner from top to bottom, and the outer ring surface of the plurality of iron core sheets (1) is tightly attached to the inner surface of the iron core rod (2).

3. A stator core fixation device as set forth in claim 1, wherein: The plurality of iron core rods (2) are arranged in parallel at equal intervals.

4. A stator core fixation device as set forth in claim 1, wherein: The clamping ring (3) is in a circular ring structure.

5. A stator core fixation device as set forth in claim 4, characterized by: The pressing ring (5) is in a circular ring structure.

6. A stator core fixation device as claimed in claim 5, characterized in that: A plurality of pressing claws (6) are arranged on the inner ring of the pressing ring (5), the pressing claws (6) and the pressing ring (5) are integrally formed, the plurality of pressing claws (6) are distributed at equal intervals along the circumferential direction, and the lower end faces of the plurality of pressing claws (6) are correspondingly pressed against a plurality of stator slot blocks on the inner ring of the iron core group.

7. A stator core fixation device as claimed in claim 6, characterized in that: A separation groove (7) is arranged between the two adjacent pressing claws (6), and the two adjacent pressing claws (6) are separated by the separation groove (7).

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