Stator core for combined forming winding

Abstract

The utility model discloses a stator core for a combined type forming winding, the stator core comprises a plurality of punching sheet assemblies, the plurality of punching sheet assemblies are laminated and assembled to form the stator core, each punching sheet assembly comprises a stator punching sheet and a punching sheet block, each stator punching sheet comprises a yoke part and a plurality of tooth parts, and the yoke parts and the tooth parts are arranged on the yoke parts. Each tooth part comprises a tooth body extending from the yoke part and a tooth tip located at the free end of the tooth body, the punching sheet blocks are installed on the tooth tips, and winding grooves used for containing the formed windings are defined by the adjacent tooth parts and the adjacent punching sheet blocks. Through the combination of the stator punching sheets and the punching sheet blocks, the motor magnetic leakage can be effectively reduced, the material cost of the motor is saved, the cogging torque of the motor is reduced, the electromagnetic force of the motor is reduced, and the vibration and noise of the motor are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to motor technical field especially relates to a combined stator core for forming winding. BACKGROUND

[0002] The stator lamination of the existing stator core is often open slot, such as Figure 1 The stator lamination 9 is integrally formed with a plurality of open slots 91 for assembling the forming winding. SUMMARY

[0003] The utility model discloses a combined stator core for forming winding.

[0004] To realize above-mentioned utility model purpose, the utility model adopts the following technical scheme: a combined stator core for forming winding, the stator core includes a plurality of lamination assemblies, a plurality of lamination assemblies are laminated and form the stator core through assembly, the lamination assembly includes stator lamination and lamination block, the stator lamination includes yoke and a plurality of tooth parts, the tooth part includes the tooth body extending from the yoke and the tooth tip at the free end of the tooth body, the lamination block is installed to the tooth tip, and the adjacent tooth part is together with the adjacent lamination block and is surrounded to form the winding slot for accommodating the forming winding.

[0005] As a further improved technical scheme of the utility model, the tooth tip is provided with a dovetail groove, and the lamination block is provided with a dovetail convex part matched with the dovetail groove.

[0006] As a further improved technical scheme of the utility model, the dovetail groove is provided with fixing glue, and the dovetail convex part is clamped and fixed in the dovetail groove.

[0007] As a further improved technical scheme of the utility model, the lamination block includes a base, a waist, a body and the dovetail convex part, the two sides of the waist are inwardly gathered and located between the base and the body, and the dovetail convex part is protruded from the body.

[0008] As a further improved technical scheme of the utility model, the lamination block is symmetrically arranged.

[0009] As a further improved technical scheme of the utility model, the stator core is circular, which includes an outer contour and an inner contour, the base includes a bottom wall, and a plurality of bottom walls are spliced to form the inner contour of the stator core.

[0010] As a further improved technical scheme of the present application, the yoke part is in the shape of a sector, comprising an outer arc wall and an inner arc wall, the outer arc wall being spliced to form the outer contour of the stator core, and the tooth part extending from the inner arc wall to the center of the circle.

[0011] As a further improved technical scheme of the present application, the outer arc wall is provided with a groove at the middle and a half slot at the edge, and the adjacent half slots of the adjacent stator punching sheets along the circumference are combined to form the groove.

[0012] As a further improved technical scheme of the present application, the stator core further comprises a stator rib welded in the groove and assembling the punching sheet components into a whole.

[0013] As a further improved technical scheme of the present application, the side wall of the groove is provided with a guide inclined surface.

[0014] The present application has the advantages that: through the combination of the stator punching sheet and the punching sheet block, the motor leakage magnetic field can be effectively reduced, the material cost of the motor can be saved, the motor tooth slot torque can be reduced, the electromagnetic force of the motor can be reduced, thereby reducing the vibration and noise of the motor. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a structural schematic view of the stator punching sheet of the existing stator core;

[0016] Figure 2 is a structural schematic view of the stator punching sheet of the combined stator core for the formed winding of the present application;

[0017] Figure 3 is Figure 2 a structural schematic view from another angle;

[0018] Figure 4 is Figure 2 a structural schematic view from another angle;

[0019] Figure 5 is a schematic view of the punching sheet block of the combined stator core for the formed winding of the present application;

[0020] Figure 6 is Figure 5 a structural schematic view from another angle;

[0021] Figure 7 is Figure 5 a structural schematic view from another angle. DETAILED DESCRIPTION

[0022] The utility model will be described in detail below in combination with the embodiments shown in the drawings. Please refer to the drawings shown, which are the preferred embodiments of the utility model. It should be noted that these embodiments are not a limitation of the utility model, and equivalent changes or substitutions of function, method, or structure made by those skilled in the art based on these embodiments are within the scope of protection of the utility model.

[0023] Please adopt Figures 2 to 7 The utility model discloses a combined stator core for forming winding. The stator core comprises a plurality of punching sheet assemblies, and the punching sheet assemblies are stacked and assembled to form the stator core. The punching sheet assembly comprises a stator punching sheet 1 and a punching block 2. The stator punching sheet 1 comprises a yoke portion 11 and a plurality of tooth portions 12. The tooth portion 12 comprises a tooth body 121 extending from the yoke portion 11 and a tooth tip 122 located at the free end of the tooth body 121. The punching block 2 is installed on the tooth tip 122, and the adjacent tooth portions 12 together with the adjacent punching blocks 2 surround the winding slot 31 for accommodating the forming winding (not shown). Through the combination of the stator punching sheet 1 and the punching block 2, the motor leakage magnetic field can be effectively reduced, the motor material cost can be saved, the motor tooth slot torque can be reduced, and the electromagnetic force of the motor can be reduced, thereby reducing the vibration and noise of the motor. The combined stator core of the utility model is suitable for the forming winding, which comprises a concentrated winding and a distributed winding.

[0024] Specifically, the punching block 2 comprises a base 21, a waist portion 22, a body portion 23 and a dovetail convex portion 24. The punching block 2 is symmetrically arranged. The two sides of the waist portion 22 are inwardly contracted and located between the base 21 and the body portion 23, and the dovetail convex portion 24 is convexly arranged on the body portion 23. The width of the base 21 is greater than the width of the body portion 23, the width of the body portion 23 is greater than the width of the waist portion 22, and the width of the waist portion 22 is greater than the width of the dovetail convex portion 24. The tooth tip 122 is provided with a dovetail groove 1221, and the punching block 2 is provided with a dovetail convex portion 24 matched with the dovetail groove 1221. The dovetail groove 1221 is provided with fixing glue, and the dovetail convex portion 1221 is clamped and fixed in the dovetail groove 1221.

[0025] The stator core is in the shape of a ring, which comprises an outer contour and an inner contour. The base 21 comprises a bottom wall 211, and a plurality of bottom walls 211 are spliced to form the inner contour of the stator core.

[0026] The yoke portion 11 is in the shape of a sector, which comprises an outer arc wall 111 and an inner arc wall 112. The outer arc wall 111 is spliced to form the outer contour of the stator core, and the tooth portion 12 extends from the inner arc wall 112 to the center of the circle. The outer arc wall 111 is provided with a groove 113 located at the middle and a half slot 114 located at the edge, and the adjacent half slots 114 of the adjacent stator punching sheets 1 are combined to form a groove along the circumference.

[0027] The stator core further comprises a stator web (not shown) welded in the recess 113 and assembling the plurality of lamination assemblies into a whole. By welding the stator web in the recess 113 and the half-slot 114, the stator assembly laminations can be stacked and combined into the whole stator core. Preferably, the side wall of the recess 113 is provided with a guide slope 1131.

[0028] The stator assembly comprises a stator lamination 1 and a lamination block 2, and the stator assembly laminations are stacked and combined to form the stator core. Through the combination of the stator lamination 1 and the lamination block 2, the motor leakage magnetic field can be effectively reduced, the motor material cost can be saved, the motor tooth slot torque can be reduced, the motor electromagnetic force can be reduced, and thus the vibration and noise of the motor can be reduced.

[0029] It should be understood that, although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that those skilled in the art can understand.

[0030] The series of detailed descriptions listed above are only specific descriptions of the feasible embodiments of the utility model, and they are not used to limit the protection scope of the utility model, and any equivalent embodiments or changes made without departing from the spirit of the utility model art should be included in the protection scope of the utility model.

Claims

1. A stator core for a combined form-wound winding, characterized by The stator core comprises a plurality of lamination assemblies, the lamination assemblies are laminated and assembled to form the stator core, the lamination assemblies comprise a stator lamination and a lamination block, the stator lamination comprises a yoke and a plurality of tooth portions, the tooth portions comprise tooth bodies extending from the yoke and tooth tips at free ends of the tooth bodies, the lamination block is installed on the tooth tips, adjacent tooth portions together with adjacent lamination blocks surround to form winding slots for accommodating the shaped windings.

2. The combined stator core for a formed winding according to claim 1, characterized by The tooth tips are provided with dovetail grooves, and the lamination blocks are provided with dovetail convex portions matched with the dovetail grooves.

3. The combined stator core for a formed winding according to claim 2, characterized by The dovetail grooves are provided with fixing glue, and the dovetail convex portions are clamped and fixed in the dovetail grooves.

4. The combined stator core for a formed winding according to claim 2, characterized by The lamination block comprises a base, a waist portion, a body portion and the dovetail convex portion, the waist portion is inwardly tapered at both sides and located between the base and the body portion, and the dovetail convex portion is protruded from the body portion.

5. The combined stator core for a form-wound winding according to claim 4, characterized by The lamination block is symmetrically arranged.

6. The combined stator core for a form-wound winding according to claim 4, characterized by The stator core is in a circular ring shape and comprises an outer contour and an inner contour, the base comprises a bottom wall, and a plurality of the bottom walls are spliced to form the inner contour of the stator core.

7. The combined stator core for a form-wound winding according to claim 6, characterized by The yoke is in a fan shape and comprises an outer arc wall and an inner arc wall, the outer arc wall is spliced to form the outer contour of the stator core, and the tooth portions extend from the inner arc wall to the center.

8. The combined stator core for a form-wound winding according to claim 7, characterized by The outer arc wall is provided with a groove at the middle and a half slot at the edge, and adjacent half slots of adjacent stator laminations along the circumference combine to form a groove.

9. The combined stator core for a form-wound winding according to claim 8, characterized by The stator core further comprises a stator rib welded in the groove and assembled to form a whole of the lamination assemblies.

10. The stator core for a combined type formed winding according to claim 9, characterized by The side wall of the groove is provided with a guide inclined surface.

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