High-voltage motor stator lamination structure

Abstract

The utility model discloses a kind of high-voltage motor stator lamination structure, it is related to stator sheet assembly technical field.Stator sheet, axial two opposite end faces are respectively equipped with the position and the size matching positioning slot and positioning pin;The positioning pin includes: several elastic arc pieces, the arc surface of elastic arc piece is convex, the convex end of several elastic arc pieces is circumferentially distributed and the convex end between is set back, when multiple stator sheets are axially stacked, the convex end of the elastic arc piece of adjacent positioning pin is mutually opposed and generates radial elastic deformation, after being inserted into corresponding positioning slot, it is elastically attached to the inner circumferential wall surface of this positioning slot.The utility model generates radial elastic deformation and elastically attaches inner circumferential wall surface by the elastic arc piece of positioning pin when being inserted into positioning slot, ensure accurate positioning and firm connection when adjacent stator sheet is axially stacked in high speed or high load condition, prevent radial displacement.

Description

Technical Field

[0001] This utility model relates to the field of stator lamination technology, specifically a stator lamination structure for a high-voltage motor. Background Technology

[0002] The stator lamination structure is made up of several layers of silicon steel sheets of specific shapes tightly stacked along the axial direction, which is used to ensure the electromagnetic performance and mechanical stability of high-voltage motors during operation.

[0003] A search revealed that Chinese utility model patent application with publication number "CN220544751U" proposed "a stator core structure for a high-voltage motor". By using a support plate structure to replace the whole circular middle waist ring, the influence of machining deformation and residual machining stress of the middle waist ring is avoided.

[0004] However, in actual use, the aforementioned disclosed devices and similar existing devices have relatively simple designs for vibration resistance under high speed or high load conditions, making it difficult to meet the needs of use under complex working conditions. Utility Model Content

[0005] The purpose of this invention is to provide a high-voltage motor stator lamination structure to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a high-voltage motor stator lamination structure, comprising:

[0007] The stator laminations are provided with positioning grooves and positioning pins that match the position and specifications on the two opposite end faces of the axial direction;

[0008] The positioning pin includes: a plurality of elastic arc plates, the arc surfaces of the elastic arc plates are raised, the raised ends of the plurality of elastic arc plates are circumferentially distributed and the raised ends are arranged opposite to each other. When multiple stator plates are stacked axially, the raised ends of the elastic arc plates of adjacent positioning pins are opposite to each other and generate radial elastic deformation. After being inserted into the corresponding positioning groove, they elastically fit against the inner circumferential wall of the positioning groove.

[0009] Furthermore, several elastic arc plates are evenly arranged at equal angles on the opposite side, with the center point of the positioning groove at the opposite end as the center.

[0010] Furthermore, the positioning pin includes: a plurality of elastic arc plates, the arc surfaces of the elastic arc plates are concave, the concave ends of the plurality of elastic arc plates are circumferentially distributed and the concave ends are arranged opposite to each other, and a force-bearing lever is fixed at the center point inside the positioning groove. When multiple stator plates are stacked axially, the elastic arc plates of adjacent positioning pins are respectively attached to different positions on the inner circumferential wall of the positioning groove after contacting the force-bearing lever.

[0011] Furthermore, the stator lamination has several grooves on the inner wall of the positioning groove near the bottom of the groove. The grooves are evenly distributed along the axial direction of the inner wall of the positioning groove to adapt to the elastic arc sheet.

[0012] Furthermore, each stator lamination has an insertion notch on both sides of each positioning pin, which is used to insert axial reinforcing ribs when the stator laminations are stacked.

[0013] Furthermore, the magnetic winding bundle slot at the inner edge of the stator lamination and the positioning pin are located on the same extended axis of the center of the stator lamination, so that the positional relationship between the magnetic winding bundle slot and the positioning pin remains consistent during the stacking of stator laminations.

[0014] Furthermore, the axial height of the positioning pin is less than the thickness of the stator lamination, so that the end faces of adjacent stator laminations can fully contact each other when stacked. The edge of the positioning groove is provided with a guide chamfer to facilitate the initial alignment and insertion of the positioning pin.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] The stator lamination structure of this high-voltage motor uses the elastic arc of the positioning pin to generate radial elastic deformation and elastically fit the inner circumferential wall when inserted into the positioning slot. This ensures accurate positioning and firm connection when adjacent stator laminations are axially stacked under high speed or high load conditions, and prevents radial displacement.

[0017] In addition, the grooves and elastic arc plates provide additional engagement points to enhance vibration resistance, and the interlacing notches facilitate the insertion of axial reinforcing ribs to improve the overall structural rigidity and stability.

[0018] It should also be noted that by ensuring the consistency of the positions of the magnetic winding bundle slots and the positioning pins, the precise alignment of the winding slots during the stacking process is ensured, thus avoiding winding deviation.

[0019] Finally, by using a design where the axial height of the locating pin is less than the thickness of the stator lamination and a chamfered guide groove, the design promotes full contact between adjacent end faces and simplifies the initial alignment and insertion process. Attached Figure Description

[0020] Figure 1 This is an isometric drawing of the present invention;

[0021] Figure 2 for Figure 1 A magnified view of part A in the middle;

[0022] Figure 3 This is a diagram showing the composition of the back structure of this utility model.

[0023] In the diagram: 1. Stator lamination; 2. Intercalation notch; 3. Magnetic winding harness slot; 4. Positioning pin; 5. Positioning groove. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] like Figures 1-3 As shown, this utility model provides a technical solution: a high-voltage motor stator lamination structure, which includes the following components:

[0026] The stator lamination 1 has positioning grooves 5 and positioning pins 4 with matching positions and specifications on two opposite end faces along the axial direction. It should be noted that the positioning pins 4 are ingeniously designed, including several elastic arc plates. The arc surfaces of the elastic arc plates are convex, and the convex ends of the several elastic arc plates are evenly distributed along the circumference, and the convex ends are set opposite to each other. When multiple stator laminations 1 are stacked along the axial direction, the convex ends of the elastic arc plates of adjacent positioning pins 4 are opposite to each other, and radial elastic deformation is generated during the insertion process. Finally, they elastically fit against the inner circumferential wall of the corresponding positioning groove 5, forming a friction fit. The several elastic arc plates are evenly set at equal angles on the end face of the stator lamination 1 with the center point of the positioning groove 5 as the center, ensuring uniform force distribution and improving positioning accuracy and overall stability.

[0027] In another embodiment, the positioning pin 4 also includes several elastic arc plates, but the arc surface of the elastic arc plates is concave. The concave ends of the several elastic arc plates are distributed circumferentially and are arranged opposite to each other. A force-bearing lever is fixed at the center point inside the positioning groove 5. When multiple stator plates 1 are stacked axially, the elastic arc plates of adjacent positioning pins 4 are extended outward by the lever after contacting it, and respectively fit against different positions on the inner circumferential wall of the positioning groove 5 to achieve multi-point locking and enhance the anti-torsion ability.

[0028] It should be added that, in actual use, the stator plate 1 has several grooves on the inner wall of the positioning groove 5 near the bottom of the groove. These grooves are evenly distributed along the inner wall of the positioning groove 5 and are precisely matched with the elastic arc plate of the positioning pin 4. The groove design allows the elastic arc plate to be embedded in it after insertion, providing additional mechanical engagement and preventing loosening or displacement after stacking.

[0029] It is worth noting that in this application, the stator lamination 1 has an insertion notch 2 on both sides of each positioning pin 4. The insertion notch 2 is specifically used for inserting axial reinforcing ribs when the stator laminations 1 are stacked. This structure allows the reinforcing ribs to pass through all the laminations, significantly improving the axial stiffness and vibration resistance of the lamination group and ensuring the structural integrity of the motor during operation.

[0030] It should be further explained that, in this application, the magnetic winding bundle slot 3 at the inner edge of the stator lamination 1 and the positioning pin 4 are both located on the same axial extension line of the center of the stator lamination 1. This arrangement ensures that during the stacking process of the stator lamination 1, the positional relationship between the magnetic winding bundle slot 3 and the positioning pin 4 of all laminations is always consistent, which facilitates the smooth passage of subsequent winding wires and the optimized configuration of electrical connections, and avoids assembly interference.

[0031] Finally, it should be noted that the axial height of the locating pin 4 in this application is intentionally less than the thickness of the stator lamination 1, so that the end faces of adjacent stator laminations 1 can fully contact each other during stacking, ensuring heat conduction efficiency and continuity of mechanical support; at the same time, the groove edge of the locating groove 5 is provided with a guide chamfer, which facilitates the initial alignment and insertion of the locating pin 4, reduces assembly resistance, and improves production efficiency and assembly accuracy.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-voltage motor stator lamination structure, characterized in that, include: The stator lamination (1) has a positioning groove (5) and a positioning pin (4) with matching position and specifications on its two opposite end faces in the axial direction. The positioning pin (4) includes: a plurality of elastic arc plates, the arc surface of the elastic arc plates is raised, the raised ends of the plurality of elastic arc plates are circumferentially distributed and the raised ends are arranged opposite to each other. When multiple stator plates (1) are stacked axially, the raised ends of the elastic arc plates of adjacent positioning pins (4) are opposite to each other and generate radial elastic deformation. After being inserted into the corresponding positioning groove (5), they elastically fit against the inner circumferential wall of the positioning groove (5).

2. The high-voltage motor stator lamination structure according to claim 1, characterized in that: Several elastic arc plates are evenly arranged at the opposite position on the other side with the center point of the positioning groove (5) at the opposite end as the center.

3. The high-voltage motor stator lamination structure according to claim 1, characterized in that: The positioning pin (4) includes: a plurality of elastic arc plates, the arc surface of the elastic arc plates is concave, the concave ends of the plurality of elastic arc plates are circumferentially distributed and the concave ends are arranged opposite to each other, and a force-bearing lever is fixed at the center point inside the positioning groove (5). When multiple stator plates (1) are stacked axially, the elastic arc plates of adjacent positioning pins (4) are respectively attached to different positions on the inner circumferential wall of the positioning groove (5) after contacting the force-bearing lever.

4. The high-voltage motor stator lamination structure according to claim 1, characterized in that: The stator plate (1) has several grooves on the inner wall of the positioning groove (5) near the bottom of the groove. The grooves are evenly distributed along the inner wall of the positioning groove (5) to adapt to the elastic arc plate.

5. The high-voltage motor stator lamination structure according to claim 1, characterized in that: The stator lamination (1) has an insertion notch (2) on both sides of each positioning pin (4). The insertion notch (2) is used to insert axial reinforcing ribs when the stator laminations (1) are stacked.

6. The high-voltage motor stator lamination structure according to claim 5, characterized in that: The magnetic winding bundle slot (3) at the inner edge of the stator lamination (1) and the positioning pin (4) are located on the same axial extension line of the center of the stator lamination (1), so that the positional relationship between the magnetic winding bundle slot (3) and the positioning pin (4) remains consistent during the stacking of the stator laminations (1).

7. The high-voltage motor stator lamination structure according to claim 1, characterized in that: The axial height of the positioning pin (4) is less than the thickness of the stator lamination (1) so that the end faces of adjacent stator laminations (1) can fully contact each other when stacked. The groove edge of the positioning groove (5) is provided with a guide chamfer to facilitate the initial alignment and insertion of the positioning pin (4).

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