CN212751949U - Improved structure of split type stator core - Google Patents

Abstract

The utility model provides a split type stator core's improvement structure, its characterized in that includes frame, split type stator component, and split type stator component includes the split type stator component, the clamping ring of support, several T font, and the support is provided with the tongue-and-groove, and split type stator component is provided with the tenon, and the tenon is inlayed and is advanced the tongue-and-groove in, and the frame is provided with keyway or key, and the support medial surface is provided with key or keyway, and spacing step and clamping ring cooperation are fixed a position split type stator component on the support. Compared with the prior art, the utility model, have that fan-shaped iron core unit assembles easily, copper line between the fan-shaped iron core unit can not produce the friction not hard up, reduces interturn and risk to the ground, and the inside and outside circle size of iron core is stable, and stator core fixes to the frame easily on, the advantage of installation effectiveness height, with low costs.

Description

Improved structure of split type stator core

Technical Field

The utility model relates to the technical field of electric machines, especially split type stator core technique.

Background

With the continuous improvement of the manufacturing technology, the motor manufacturing technology and the motor process technology are also continuously improved. People have higher and higher requirements on the volume, the weight, the performance, the service life and the like of the motor. The split type stator core has the advantages of small size of a manufacturing mold, high material utilization rate and low input cost due to high motor slot filling rate, and is attractive in recent years, and a plurality of motor factories are slowly developed and promoted, for example: according to the technology disclosed by the Chinese patent CN201710517833.9, a tenon and a mortise are respectively designed on a single fan-shaped iron core unit, so that the purpose of mutually connecting and fastening the split stator iron cores end to end is achieved.

The problems of the technology are as follows: when the last block of fan-shaped iron core unit is being assembled, tenon and mortise are difficult to mortise and tenon connection, and assembly efficiency is low. Because the inner circle of the stator core is formed by splicing a plurality of fan-shaped core units, the core can be integrally deformed in the assembling and carrying processes, and the inner circle is in an elliptical shape. During the process that the manufactured winding stator core is assembled to a base stator with certain cylindricity, the fan-shaped iron core units can be extruded, so that enameled wires on the adjacent iron core units can rub against each other, and the enamel skin can be damaged seriously, thereby causing the inter-turn or inter-ground fault of the motor. Especially, the winding stator core cannot be assembled on the base under the condition that the core is seriously deformed. Therefore, although the split type production can be realized by the technology, the installation efficiency is low and the reject ratio is high in the actual production process. Therefore, chinese patent CN201710517833.9 describes a method for connecting split type inner stator core, but does not solve some assembly problems in production.

Disclosure of Invention

The utility model aims at providing an easily assemble of fan-shaped iron core unit, copper line between the fan-shaped iron core unit can not produce the friction not hard up, reduces interturn and risk to the ground, and the inside and outside circle size of iron core is stable, and stator core fixes the frame easily on, the split type stator core's of high, the with low costs improvement structure of installation effectiveness.

The utility model discloses a realize like this: the split stator component comprises a circular ring-shaped support sleeved on a base, split stator components arranged on the support and having a plurality of T-shaped shapes, and a pressing ring fixed to the other end of the support, wherein a plurality of mortises are formed in the periphery of the outer side of the support, tenons are arranged at the roots of the split stator components corresponding to the mortises and embedded into the mortises to enable the split stator components to be connected onto the outer side face of the support, winding grooves are formed in the space between the adjacent split stator components, key grooves or keys are arranged in the axial direction of the outer side face of the support, keys or key grooves are arranged on the inner side face of the support corresponding to the key grooves or the keys on the support, and the split stator components are positioned on the support through the matching of the limiting steps and the pressing ring.

The split stator component is connected to the base through the support, so that the stable shape of the support can be utilized, the shape of the split stator component is guaranteed not to be deformed, the size of the inner circle and the outer circle of the split stator core is stable, and the purpose of the invention is achieved.

Compared with the prior art, the utility model, its beneficial effect is:

1. the front and back sides of the single fan-shaped iron core unit can be assembled in an interchangeable way;

2. the fan-shaped stator core units can be separated from the stator core;

4. the assembled stator core cannot deform, the size of the inner circle and the outer circle of the core is stable, and the assembly is easy;

5. the key and the key groove are arranged, so that a positioning pin or a flat key does not need to be punched again after assembly, the assembly efficiency is improved, and the manufacturing cost of the motor is reduced.

Drawings

Fig. 1 is an exploded view of the present invention;

fig. 2 is an assembled perspective view of the present invention;

FIG. 3 is a schematic view of the bracket in connection with a split stator member;

fig. 4 is a perspective view of the pressing ring.

Detailed Description

The invention will now be described in further detail with reference to the accompanying drawings and examples:

as shown in figures 1 and 2, the utility model comprises a circular ring-shaped base 2 with a limit step 1 at one end, a split stator component a arranged on the base 2, as shown in figures 1, 2 and 3, the split stator component a comprises a circular ring-shaped bracket 3 (which can be formed by overlapping and superposing a plurality of punching sheets) sleeved on a base 2, a plurality of T-shaped split stator components 4 (which can be formed by overlapping and superposing a plurality of punching sheets) arranged on the bracket 3, a pressing ring 5 fixed at the other end of the base 2, a plurality of mortises 6 uniformly arranged along the periphery of the outer side of the bracket 3, tenons 7 arranged at the roots of the split stator components 4 corresponding to the mortises 6, the tenons 7 are embedded into the mortises 6 to connect the split stator components 4 on the outer side surface of the bracket 3, winding slots 8 are formed by the space between the adjacent split stator components 4 so as to accommodate coils wound on the split stator components 4, a key groove 9 (of course, a key) is axially arranged on the outer side surface of the base 2, a key 10 is arranged on the inner side surface of the support 3 corresponding to the key groove 9 on the base 2 (if the key is arranged on the base 2, the key groove is arranged on the support 3), and the limiting step 1 is matched with the pressing ring 5 to position the split stator component 4 on the support 3.

The tool withdrawal groove 11 connected with the root of the key groove 9 is formed in the limiting step 1, the root of the key groove 9 is guaranteed to reach the inner side face of the limiting step 1 directly, the split type stator component 4 is guaranteed to abut against the inner side face of the limiting step 1, and meanwhile, a tool for machining the key groove 9 can be withdrawn from the tool withdrawal groove 11.

As shown in fig. 1, 2 and 3, the key slots 9 and the corresponding keys 10 are symmetrically arranged, so that the force applied by the annular bracket 3 on the annular base 2 is balanced even if the annular bracket 3 is smoothly sleeved on the annular base 2.

As shown in fig. 1, 2 and 4, the width of the annular bracket 3 is larger than the thickness of the split stator member 4 by X, a flange 12 is arranged along the inner edge of the pressing ring 5, the thickness of the flange 12 is X, the pressing ring 5 is fixed on the outer side surface of the annular bracket 3 through a screw 13 which passes through the pressing ring 5 and then is screwed on the outer side surface of the annular bracket 3, and the flange 12 presses the outer side surface of the split stator member 4 to enable the split stator member 4 to abut against the limit step 1.

As shown in fig. 1 and 4, an introduction ring 14 having a diameter smaller than that of the annular holder 3 is provided on the outer side surface of the annular holder 3, the central axis of the introduction ring 14 is overlapped with the annular holder 3, the inner diameter of the through hole of the pressing ring 5 corresponds to the diameter of the introduction ring 14, and the pressing ring 5 is fitted over the introduction ring 14. Thereby ensuring that the central axis of the pressing ring 5 coincides with the central axis of the circular bracket 3.

As shown in fig. 1 and 3, the mortise 6 includes a dovetail groove 6a and a square groove 6b connected to the dovetail groove 6a, the tenon 7 corresponding to the mortise 6 includes a square post 7a and a dovetail embedded block 7b connected to the square post 7a, the width of the root of the T-shaped split stator member 4 is larger than that of the square post 7a, the end of the root of the T-shaped split stator member 4 on both sides of the square post 7a is an inward concave surface corresponding to the outward convex surface of the outer side of the circular bracket 3, so as to ensure that the end of the root of the split stator member 4 abuts against the outer side of the circular bracket 3 after embedding. The tenon 7 is designed by adopting a square column 7a and a dovetail-shaped embedded block 7b connected with the square column 7a, and is matched with the mortise 6 with a corresponding shape and the root end surface of the T-shaped split stator component 4 is tightly matched with the outer side surface of the bracket 3, so that the T-shaped split stator component 4 is tightly connected on the bracket 3, and meanwhile, the T-shaped split stator component 4 has enough rigidity after being connected.

Claims (6)

1. An improved structure of a split stator core is characterized by comprising a circular base with a limiting step at one end, split stator components arranged on the base, wherein each split stator component comprises a circular bracket sleeved on a base, a plurality of T-shaped split stator components arranged on the bracket, a pressing ring fixed at the other end of the base, a plurality of mortises arranged along the periphery of the outer side of the bracket, the root of the split stator component corresponding to the mortise is provided with a tenon which is embedded into the mortise to connect the split stator component on the outer side surface of the bracket, the space between the adjacent split stator components forms a winding slot, the axial direction of the outer side surface of the engine base is provided with a key slot or a key, the inner side face of the bracket corresponding to the key groove or the key on the base is provided with the key or the key groove, and the limiting step is matched with the pressing ring to position the split type stator component on the bracket.

2. The improved structure of split stator core as claimed in claim 1, wherein there is a pair of key slots and corresponding keys, and the key slots and corresponding keys are symmetrically arranged.

3. The improved structure of the split stator core according to claim 1 or 2, characterized in that the width of the circular ring-shaped bracket (3) is larger than the thickness of the split stator component by X, a flange is arranged along the inner edge of the pressing ring, the thickness of the flange is X, the pressing ring is fixed on the outer side surface of the circular ring-shaped bracket through a screw which passes through the pressing ring and then is screwed on the outer side surface of the circular ring-shaped bracket, and the flange is pressed on the outer side surface of the split stator component to make the split stator component tightly abut on the limit step.

4. The improved structure of the split stator core according to claim 3, wherein a lead-in ring with a diameter smaller than that of the annular bracket is arranged on the outer side surface of the annular bracket, the central axis of the lead-in ring is overlapped with the annular bracket, the inner diameter of the through hole of the pressing ring corresponds to that of the lead-in ring, and the pressing ring is sleeved on the lead-in ring.

5. The improved structure of split stator core as claimed in claim 1, 2 or 4, wherein the mortise includes a dovetail slot and a square slot connected to the dovetail slot, the tenon corresponding to the mortise includes a square post and a dovetail insert connected to the square post, the width of the root of the T-shaped split stator member is larger than that of the square post, the end of the root of the T-shaped split stator member at both sides of the square post is an inward concave surface corresponding to the outward convex surface of the outer side of the circular bracket, so as to ensure that the end of the root of the split stator member abuts against the outer side of the circular bracket after the split stator member is inserted.

6. The improved structure of split stator core as claimed in claim 3, wherein the mortise comprises a dovetail slot and a square slot connected to the dovetail slot, the tenon corresponding to the mortise comprises a square post and a dovetail insert connected to the square post, the width of the root of the T-shaped split stator member is larger than that of the square post, the end of the root of the T-shaped split stator member at both sides of the square post is a concave arc corresponding to the convex arc of the outer side of the circular bracket, so as to ensure that the end of the root of the split stator member abuts against the outer side of the circular bracket after the split stator member is inserted.

Images