Stator core

Abstract

The utility model provides a stator punching sheet and a stator iron core, the stator punching sheet comprises a punching sheet body, the outer side wall of the punching sheet body is provided with a plurality of cramp grooves, the bottom of each cramp groove is provided with a soldering tin accommodating groove, a plurality of stator punching sheets are laminated and fixed, the stator punching sheet also comprises a pair of cramp strips, the cramp strips are connected in the cramp grooves, and the cramp strips are provided with welding grooves corresponding to the soldering tin accommodating grooves. A stator punching sheet is pressed and fixed through concave and convex points, then a cramp strip is installed in a cramp groove, the stator punching sheet is fixed through the cramp strip, a welding gun enters from a welding groove in the cramp strip to weld the stator punching sheet, soldering tin enters a soldering tin containing groove, the stator punching sheet is welded and fixed, and meanwhile the soldering tin is reserved in the soldering tin containing groove. In addition, the width of the soldering tin containing groove is larger than that of the welding groove, so that soldering tin left in the soldering tin containing groove is limited by the cramp strip and cannot fall off, the soldering tin is not prone to loosening and falling off, and welding firmness is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a stator core. Background Art

[0002] The stator core is composed of multiple stator punchings stacked to a specified thickness, and then welded by a welding gun to fix adjacent stator punchings together. For example, the stator punchings disclosed in patent number CN201520197808.3.

[0003] The stator core disclosed in the above patent is made of stacked stator sheets. After welding, the stator sheets are affected by vibration during operation, which causes the solder to fall off, making the welding unstable and causing the welded stator sheets to loosen. Summary of the invention

[0004] In view of the problems pointed out in the background technology, the utility model proposes a stator core to solve the above technical problems.

[0005] The technical solution of the utility model is achieved in this way:

[0006] A stator punching sheet comprises a punching sheet body. The outer side wall of the punching sheet body is provided with a plurality of buckle sheet grooves, and the bottom of the buckle sheet groove is provided with a solder receiving groove.

[0007] The utility model is further configured that four buckle slots are provided.

[0008] The utility model is further configured that the buckle slot is dovetail shaped.

[0009] The utility model is further configured that a plurality of winding grooves are provided on the inner side wall of the punching sheet body.

[0010] The utility model is further configured that the punching sheet body is provided with concave and convex points.

[0011] A stator core comprises the above-mentioned stator punching sheet, a plurality of stator punching sheets are stacked and fixed, and also comprises a pair of cleat strips, the cleat strips are connected in cleat grooves, a welding groove corresponding to the solder receiving groove is provided on the cleat strip, the welding groove extends along the length direction of the cleat strip, and the width of the welding groove is smaller than the width of the solder receiving groove.

[0012] By adopting the above technical solution, the beneficial effects of the utility model are as follows:

[0013] The stator core provided by the utility model has stator punching sheets that are first crimped and fixed by concave and convex points, and then the buckle sheet strip is installed in the buckle sheet groove, the buckle sheet strip fixes the stator punching sheets, and then welding is performed, the welding gun enters the welding groove on the buckle sheet strip to weld the stator punching sheets, the solder enters the solder receiving groove, the stator punching sheets are welded and fixed, and the solder is retained in the solder receiving groove, and the stator punching sheets and the buckle sheet strip are also welded and fixed, and because the width of the solder receiving groove is greater than the width of the welding groove, the solder retained in the solder receiving groove is restricted by the buckle sheet strip and cannot fall out, so the solder is not easy to loosen and fall off, thereby ensuring the firmness of the welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0015] Figure 1 It is a structural schematic diagram of the punching sheet body of the utility model.

[0016] Figure 2 It is a structural schematic diagram of the welding of the punching plate body and the buckle strip of the utility model.

[0017] Figure 3 It is a structural schematic diagram of the connection between the buckle strip and the punch body of the utility model.

[0018] Figure 4 It is a structural schematic diagram of the buckle strip of the utility model. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] For reference Figure 1-4 The utility model is described as follows:

[0021] Embodiment 1: A stator punching sheet comprises a circular punching sheet body 1, a plurality of clip grooves 2 are arranged on the outer wall of the punching sheet body 1, the clip grooves 2 are dovetail-shaped, four clip grooves 2 are arranged evenly in the circumferential direction of the punching sheet body 1, a plurality of winding grooves 3 are arranged on the inner wall of the punching sheet body 1, concave and convex points 4 are arranged on the punching sheet body 1, and a solder receiving groove 5 is provided at the bottom of the clip groove 2.

[0022] A stator core includes the above-mentioned stator punching sheet, a plurality of stator punching sheets are stacked and fixed, adjacent punching sheet bodies 1 are pressed and fixed by concave and convex points 4, and also includes a buckle sheet strip 6, the buckle sheet strip 6 is connected to the buckle sheet groove 2, the two ends of the buckle sheet strip 6 are bent to the radial inner side of the punching sheet body 1 to form a restriction and fixation of the punching sheet body 1, and the buckle sheet strip 6 is provided with a welding groove 7 corresponding to the solder receiving groove 5, the welding groove 7 is extended along the length direction of the buckle sheet strip 6, and the width of the welding groove 7 is smaller than the width of the solder receiving groove 5. The welding gun and the welding rod enter the punching sheet body 1 through the welding groove 7 for welding and fixing, and after welding, the solder will be filled and retained in the solder receiving groove 5, so that the punching sheet body 1 and the punching sheet body 1 are welded and fixed, and the punching sheet body 1 and the buckle sheet strip 6 are welded and fixed, and the solder retained in the solder receiving groove 5 will be restricted by the buckle sheet strip 6 and cannot escape, so that the solder will not fall off, ensuring the firmness of welding.

[0023] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A stator core, characterized in that: It includes a punch body, and a plurality of clip grooves are provided on the outer side wall of the punch body, and is characterized in that: a solder receiving groove is provided at the bottom of the clip groove; there are four clip grooves; the clip groove is dovetail-shaped; a plurality of winding grooves are provided on the inner side wall of the punch body; the punch body is provided with concave and convex points; a plurality of stator punches are stacked and fixed, and also includes a pair of clip strips, the clip strips are connected in the clip grooves, the clip strips are provided with welding grooves corresponding to the solder receiving grooves, the welding grooves are extended along the length direction of the clip strips, and the width of the welding grooves is smaller than the width of the solder receiving grooves.

Images