JP2012115005A - Laminated split stator core - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a laminated split stator core that allows high dimensional and shape accuracy.SOLUTION: A laminated split stator core 1 includes a plurality of split core pieces 2. Each of the split core pieces 2 has formed therein: a connecting protrusion 3 on a first end of a circumferential portion 2a; a slit 3a in the connecting protrusion 3; a through-hole 3b connected with the slit 3a of the connecting protrusion 3; and a connecting recess 4, on a second end of the circumferential portion 2a, that is shaped correspondingly to the connecting protrusion 3. The connecting protrusion 3 of each of the split core pieces 2 is fitted into the recess 4 of the adjacent one of the split core pieces 2, and then a pin 5 or a spring pin is inserted into the through-hole 3b of the connecting protrusion 3 of each of the split core pieces 2.

Description

  The present invention relates to a split stator laminated iron core.

  Conventionally, a split stator laminated iron core used in an electric motor is known. For example, in Patent Document 1 below, in a divided stator laminated core obtained by caulking and laminating divided yoke core pieces and connecting the divided yoke core laminated bodies wound around magnetic poles in a cylindrical shape, the divided yoke core pieces are magnetic poles. A split stator laminated core is disclosed in which both ends are extended along one side of the circumference of the yoke and a connecting protrusion is formed along both sides and a connecting recess is formed along the other side.

JP-A-8-186958

  However, in the split stator laminated iron core disclosed in Patent Document 1, some gaps are provided for fitting into the connecting protrusions and the connecting recesses in manufacturing. For this reason, when the divided yoke core pieces disclosed in Patent Document 1 are connected, the rigidity is low even when the divided yoke core pieces are connected, and the dimensional accuracy such as the inner and outer diameters cannot be obtained. There was a case. That is, it is necessary to provide some play in the connecting protrusions and the connecting recesses that are the fitting portions, and it is difficult to form a highly accurate split stator laminated iron core.

  In view of the above, an object of the present invention is to provide a split stator laminated iron core capable of realizing a highly accurate dimensional shape.

The divided stator laminated iron core according to the first invention for solving the above-mentioned problems is
In a split stator laminated core composed of a plurality of split core pieces,
A connecting convex portion at one end of the circumferential portion of the divided core piece,
A slit in the connecting convex,
A through hole connected to the slit portion of the connecting convex portion;
Forming a connection concave portion having a shape corresponding to the connection convex portion at the other end of the circumferential portion of the divided core piece;
After fitting the connecting convex part and the connecting concave part of the divided core piece adjacent to the connecting convex part and the connecting concave part of the divided core piece, a pin or a spring pin is inserted into the through hole of the connecting convex part of each split core piece. Is inserted.

  ADVANTAGE OF THE INVENTION According to this invention, the split stator laminated iron core which can implement | achieve a highly accurate dimension shape can be provided.

It is the schematic diagram which showed the structure of the division | segmentation stator laminated iron core which concerns on the Example of this invention. It is the schematic diagram which showed the structure of the split core piece in the split stator laminated core which concerns on the Example of this invention. It is the schematic diagram which showed the state before the connection in the division | segmentation stator laminated iron core which concerns on the Example of this invention. It is the schematic diagram which showed the state after the connection in the division | segmentation stator laminated iron core which concerns on the Example of this invention.

  Hereinafter, the form for implementing the division | segmentation stator laminated iron core which concerns on this invention is demonstrated, referring drawings.

Hereinafter, examples of the split stator laminated iron core according to the present invention will be described.
First, the structure of the split stator laminated iron core according to the present embodiment will be described.
FIG. 1 is a schematic diagram showing a configuration of a split stator laminated core according to the present embodiment.
As shown in FIG. 1, the split stator laminated core 1 according to the present embodiment is configured by connecting a plurality of split core pieces 2 in a cylindrical shape.

FIG. 2 is a schematic diagram illustrating a configuration of a split core piece in the split stator laminated core according to the present embodiment.
As shown in FIG. 2, the split core piece 2 in the split stator laminated core 1 according to the present embodiment has a T-shape. The split core piece 2 is configured by a circumferential portion 2 a that forms a circumferential portion of the split stator laminated core 1 and a magnetic pole portion 2 b that forms a magnetic pole portion of the split stator laminated core 1.

  In addition, although the division | segmentation iron core piece 2 laminates | stacks several plate-shaped members and is comprised by caulking lamination, since this structure is the same as that of a conventionally well-known structure (for example, refer the said patent document 1), here The description in is omitted. In addition, a winding is wound around the magnetic pole portion 2b, and this configuration is the same as a conventionally well-known configuration (see, for example, Patent Document 1 described above), and thus the description thereof is omitted here.

  A circular convex portion (hereinafter referred to as a connecting convex portion 3) is formed at one end of the circumferential portion 2 a of the divided core piece 2. A slit portion 3 a is formed in the connecting convex portion 3. Further, the connecting convex portion 3 is formed with a through hole 3b connected to the slit portion 3a.

  Further, a concave portion (hereinafter referred to as a connecting concave portion 4) corresponding to the shape of the connecting convex portion 3 is formed at the other end of the circumferential portion 2 a of the divided core piece 2. The connection recess 4 is formed to be slightly larger than the outer diameter of the connection protrusion 3.

Next, a method of connecting the divided core pieces in the divided stator laminated core according to the present embodiment will be described.
FIG. 3 is a schematic view showing a state before connection in the divided stator laminated core according to the present embodiment.
As shown in FIG. 3, first, the connecting convex portions 3 and the connecting concave portions 4 of the divided core pieces 2 are arranged so as to correspond to the connecting convex portions 3 and the connecting concave portions 4 of the adjacent split core pieces 2.

FIG. 4 is a schematic view showing a state after connection in the split stator laminated core according to the present embodiment.
As shown in FIG. 4, next, after fitting the connection convex part 3 and the connection recessed part 4 of the division | segmentation iron core piece 2 adjacent to the connection convex part 3 and the connection recessed part 4 of each division | segmentation iron core piece 2, The pin 5 is inserted into the through hole 3 b of the connecting convex portion 3 of the divided core piece 2. In the present embodiment, the pin 5 is inserted into the through hole 3b, but it is also possible to insert a spring pin in addition to this.

  And by inserting the pin 5 in the through-hole 3b of the connection convex part 3 of each division | segmentation iron core piece 2, and expanding the slit part 3a of the connection convex part 3 of each division | segmentation iron core piece 2, each division | segmentation iron core piece 2 of FIG. Since the outer diameter of the connecting convex portion 3 can be increased, the gap between the connecting convex portion 3 and the connecting concave portion 4 of the adjacent divided core piece 2 and the connecting convex portion 3 and the connecting concave portion 4 of each divided core piece 2. Can be eliminated.

  In addition, before inserting the pin 5 in the through-hole 3b, there is a gap between the connecting convex portion 3 and the connecting concave portion 4 of each divided core piece 2 and the connecting convex portion 3 and the connecting concave portion 4 of the adjacent divided core piece 2. In this state, the connecting convex portions 3 and the connecting concave portions 4 of the divided core pieces 2 can be easily fitted to the connecting convex portions 3 and the connecting concave portions 4 of the adjacent divided core pieces 2. Yes.

  Therefore, according to the split stator laminated core 1 according to the present embodiment, since there is no play between the connecting convex portion 3 and the connecting concave portion 4 after being connected, a highly accurate dimensional shape can be realized.

  The present invention can be used in, for example, a split stator laminated core used in an electric motor.

DESCRIPTION OF SYMBOLS 1 Split stator laminated core 2 Split core piece 2a Circumferential part 2b Magnetic pole part 3 Connecting convex part 3a Slit part 3b Through-hole 4 Connecting concave part 5 Pin

Claims (1)

In a split stator laminated core composed of a plurality of split core pieces,
A connecting convex portion at one end of the circumferential portion of the divided core piece,
A slit in the connecting convex,
A through hole connected to the slit portion of the connecting convex portion;
Forming a connection concave portion having a shape corresponding to the connection convex portion at the other end of the circumferential portion of the divided core piece;
After fitting the connecting convex part and the connecting concave part of the divided core piece adjacent to the connecting convex part and the connecting concave part of the divided core piece, a pin or a spring pin is inserted into the through hole of the connecting convex part of each split core piece. A split stator laminated iron core characterized by inserting a core.

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