Stator punching sheet of water pump motor
By designing elastic notches, elastic holes, and positioning grooves on the stator laminations, the problem of positional deviation during the stator lamination stacking process was solved, achieving tight fitting of the stator core and improving the performance and lifespan of the water pump motor.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-24
- Publication Date
- 2026-03-31
AI Technical Summary
In the existing technology, stator laminations are prone to positional deviation during the stacking process, resulting in loose stacking, which affects the performance of the stator core and the energy efficiency and lifespan of the water pump motor.
A stator lamination for a water pump motor was designed, which adopts an elastic notch and elastic hole structure, combined with positioning groove and limiting groove, to ensure that the lamination can deform evenly and be accurately positioned when under pressure, avoid position deflection, and enhance the tight fit after stacking.
This effectively ensures the tight fit of the stator laminations after stacking, improves the performance of the stator core, thereby enhancing the energy efficiency and lifespan of the water pump motor and improving heat dissipation.
Smart Images
Figure CN224068429U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of water pump motors, and in particular to a stator lamination for a water pump motor. Background Technology
[0002] Stator laminations are thin sheets made of silicon steel through a stamping process. They are stacked to form the stator core of a water pump motor. Therefore, the stacking of stator laminations determines the performance of the stator core, which in turn determines the energy efficiency and lifespan of the water pump motor.
[0003] When silicon steel sheets are fed into a high-pressure punch press, they are stamped into stator laminations. Simultaneously, subsequent stamped stator laminations fall into a stacking groove. Each completed stator lamination is stacked on top of the existing ones in the stacking groove. After a certain number of laminations are stacked, the required stator core is obtained. However, during the actual stacking process, due to the limited strength of the stator laminations themselves, insufficient pressure can result in the stacked laminations not fitting tightly together, ultimately affecting the performance of the stator core. Furthermore, the stamped stator laminations are directly conveyed into the stacking groove without any positioning. Therefore, during the actual stacking process, the stator laminations are prone to misalignment. Stacking under these conditions leads to loose stacking, ultimately affecting the energy efficiency and lifespan of the water pump motor. Summary of the Invention
[0004] The present invention aims to solve the existing technical problem by providing a water pump motor stator lamination that effectively ensures that adjacent stator laminations are tightly fitted after being stacked into a stator core, thereby effectively guaranteeing the performance of the stator core.
[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows:
[0006] This utility model discloses a stator lamination for a water pump motor, comprising a lamination body, several winding slots arranged circumferentially on the lamination body, and a shaft hole located at the center of the lamination body. The inner wall of the shaft hole is provided with several elastic notches corresponding to the positions of the winding slots, and the shaft hole communicates with the middle of the inner end of the winding slot through the elastic notches. The outer edge of the lamination body is provided with several elastic holes evenly distributed circumferentially, and the elastic holes are located between the outer ends of two adjacent winding slots. The outer circumferential surface of the lamination body is provided with a positioning structure corresponding to the position of the elastic holes.
[0007] The positioning structure includes a positioning groove on one side of the outer peripheral surface of the stamping body, the position of which corresponds to the position of one of the elastic holes; a limiting plane is provided at both the upper and lower ends of the outer peripheral surface of the stamping body; and symmetrical limiting grooves are provided on the left and right sides of the limiting plane.
[0008] An auxiliary plane is provided on both the left and right sides of the outer peripheral surface of the stamping body.
[0009] The four corners of the winding groove are all rounded.
[0010] The beneficial effects of this utility model are:
[0011] Compared with the prior art, the elastic notch in the stator lamination of the water pump motor using the structure of this utility model allows the inner edge of the lamination body to obtain a certain degree of elasticity by reducing material, enabling further deformation of the inner edge of the lamination body. The presence of elastic holes allows the outer edge of the lamination body to obtain a certain degree of elasticity by reducing material, enabling further deformation of the outer edge of the lamination body. Furthermore, the elastic holes are located between the outer ends of two adjacent winding slots. At this point, the position of the elastic holes is offset from the position of the elastic notch, ensuring that the elasticity of the lamination body is evenly distributed across the lamination body. When the lamination body is compressed, it can deform evenly... The deformation of the laminations allows the elastic notches and holes to provide greater elasticity to the lamination body. Once compressed, the laminations can deform precisely in the direction of pressure, effectively ensuring a tight fit between the stacked stator laminations. At the same time, the positioning structure allows the lamination body to be effectively positioned after falling into the stacking groove of the high-pressure press, preventing the stator laminations from shifting during stacking and causing adjacent stator laminations to not be stacked tightly. This maximizes the tight fit between adjacent stator laminations after they are stacked into the stator core, effectively ensuring the performance of the stator core and thus effectively ensuring the energy efficiency and lifespan of the water pump motor. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the structure of the stator lamination of the water pump motor of this utility model;
[0013] Figure 2 This is a front view of the stator lamination of the water pump motor of this utility model. Detailed Implementation
[0014] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:
[0015] Please see Figure 1 , Figure 2 This utility model provides a stator lamination for a water pump motor, comprising a lamination body 1, a plurality of winding grooves 2 arranged circumferentially on the lamination body 1, and a shaft hole 3 located at the center of the lamination body 1. The inner wall of the shaft hole 3 is provided with a plurality of elastic notches 4 corresponding to the positions of the winding grooves 2, and the shaft hole 3 communicates with the middle of the inner end of the winding groove 2 through the elastic notches 4. The outer edge of the lamination body 1 is provided with a plurality of circumferentially evenly distributed elastic holes 5, and the elastic holes 5 are located between the outer ends of two adjacent winding grooves 2. The outer circumferential surface of the lamination body 1 is provided with a positioning structure corresponding to the position of the elastic holes 5.
[0016] The positioning structure includes a positioning groove 6 on one side of the outer peripheral surface of the stamping body 1, the position of the positioning groove 6 corresponding to the position of one of the elastic holes 5; a limiting plane 7 is provided at both the upper and lower ends of the outer peripheral surface of the stamping body 1; and symmetrical limiting grooves 8 are provided on the left and right sides of the limiting plane 7.
[0017] An auxiliary plane 9 is provided on both the left and right sides of the outer periphery of the punch body 1.
[0018] The four corners of the winding groove 2 are all rounded with a radius of 10.
[0019] The method of using this utility model is as follows:
[0020] The presence of the elastic notch 4 allows the inner edge of the lamination body 1 to achieve a certain degree of elasticity by reducing material, enabling further deformation of the inner edge of the lamination body 1. Similarly, the presence of the elastic hole 5 allows the outer edge of the lamination body 1 to achieve a certain degree of elasticity by reducing material, enabling further deformation of the outer edge of the lamination body 1. The elastic hole 5 is located between the outer ends of two adjacent winding grooves 2. At this point, the position of the elastic hole 5 is offset from the position of the elastic notch 4, ensuring that the elasticity of the lamination body 1 is evenly distributed across it. When the lamination body 1 is compressed, it can deform uniformly, thus providing elasticity. The presence of the notch 4 and the elastic hole 5 allows the lamination body 1 to gain greater elasticity. Once compressed, it can deform precisely in the direction of pressure, thus effectively ensuring that the stator laminations are tightly fitted together after being stacked. At the same time, the positioning structure allows the lamination body 1 to be effectively positioned after falling into the stacking groove of the high-pressure punch, avoiding the situation where the position of the stator laminations deviates during stacking, resulting in the upper and lower adjacent stator laminations not being tightly stacked. This ensures that the upper and lower adjacent stator laminations are tightly fitted together after the stator laminations are stacked into the stator core to the greatest extent, effectively ensuring the performance of the stator core, and thus effectively ensuring the energy efficiency and lifespan of the water pump motor.
[0021] When positioning the stator laminations using the positioning structure, a positioning protrusion matching the positioning groove 6, a limiting protrusion matching the limiting groove 8, and an inner plane that fits into the limiting plane 7 can be set in the stacking groove of the high-pressure press. After the lamination body 1 is stamped, it will enter the stacking groove under the conveying of the high-pressure press. At this time, the cooperation between the positioning groove 6 and the positioning protrusion can effectively position the angle of the lamination body 1, and the cooperation between the limiting groove 8 and the limiting protrusion can effectively limit the position of the lamination body 1 after positioning. At the same time, the fit between the limiting plane 7 and the inner plane further ensures the accuracy of the position of the lamination body 1, thereby avoiding the situation where the position of the stator laminations deviates during stacking and the adjacent stator laminations are not stacked tightly.
[0022] An auxiliary plane 9 is provided on both the left and right sides of the outer periphery of the lamination body 1. At this time, a plane that fits with the auxiliary plane 9 can be set on the inner wall of the stacking groove of the high-pressure punch. Through the fit between the two, the position of the stator lamination is further limited, and the accuracy of the position of the stator lamination when it is stacked in the stacking groove is further guaranteed.
[0023] At the same time, the elastic notch 4, elastic hole 5, positioning groove 6 and limiting groove 8 can all indirectly increase the heat dissipation area of the lamination body 1, thereby effectively improving the heat dissipation effect of the stator lamination 0 and further ensuring the performance of the stator core.
[0024] The four corners of the winding groove 2 are all rounded with a radius 10. If the four corners of the winding groove 2 are all folded, the corners will be too sharp. In this case, the stamping of the lamination body 1 will result in too many burrs around the winding groove 2. The presence of burrs will cause the adjacent stator laminations to not fit tightly when the stator laminations are stacked. The presence of the radius 10 can effectively solve this problem.
Claims
1. A water pump motor stator lamination, comprising a lamination body, a plurality of winding slots arranged circumferentially on the lamination body, and a shaft hole arranged at the center of the lamination body, characterized in that: The inner wall of the shaft hole is provided with a plurality of elastic notches corresponding to the positions of the winding grooves, and the shaft hole is in communication with the middle part of the inner end of the winding groove through the elastic notches; the outer edge of the punching piece body is provided with a plurality of elastic holes which are uniformly distributed in a circle, and the elastic holes are located between the outer ends of two adjacent winding grooves; the outer peripheral surface of the punching piece body is provided with a positioning structure corresponding to the positions of the elastic holes; the positioning structure comprises a positioning groove provided on one side of the outer peripheral surface of the punching piece body, and the position of the positioning groove corresponds to the position of one of the elastic holes; the upper and lower ends of the outer peripheral surface of the punching piece body are both provided with a limiting plane; the left and right sides of the limiting plane are provided with limiting grooves which are symmetrical to each other.
2. A water pump motor stator lamination according to claim 1, characterized in that: The left and right sides of the outer peripheral surface of the punching piece body are both provided with an auxiliary plane.
3. A water pump motor stator lamination according to claim 1, characterized in that: The four corners of the winding groove are all provided with a round corner.