JP2008035646A - Magnetic-pole concentrated winding structure for stator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a magnetic-pole concentrated winding structure that improves electrical characteristics while reducing variations in coil shape, in the magnetic-pole concentrated winding structure for winding a plurality of coil wires for each magnetic-pole tooth. <P>SOLUTION: The magnetic-pole concentrated winding structure for a stator is used for forming each exciting coils 6, 7 by separately winding a plurality of wires around each of a plurality of radially-protruding magnetic-pole teeth 3 of an armature core 2 in a stator 1. Each circumferentially protruding partition 5 is provided around each magnetic-pole tooth 3. Each space for winding the wires is demarcated for the number of the wires so as to form each coil 6, 7 by separately winding a plurality of wires via each partition 5. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a magnetic pole concentrated winding structure in which a coil is wound around each magnetic pole tooth in a stator having an armature core having a plurality of magnetic pole teeth radially.

Conventionally, in a stator having an armature core having a plurality of magnetic pole teeth radially, when a coil is concentrated on the magnetic pole teeth, a predetermined current capacity is satisfied and a gap between the coil wire and the magnetic pole teeth is reduced. In order to improve the magnetic flux density, a magnetic pole concentrated winding structure is known in which a plurality of wires are wound in multiple layers along magnetic pole teeth (see, for example, Patent Document 1).
JP-A-2005-312182

  However, according to the conventional magnetic pole concentrated winding structure, when a plurality of coil wires are wound around the magnetic pole teeth, there is a possibility that these wires cross each other and the coil shape may vary, and there is room for improvement. was there.

  Accordingly, an object of the present invention is to provide a magnetic pole concentrated winding structure that can reduce the variation in coil shape and improve electrical characteristics in a magnetic pole concentrated winding structure in which a plurality of coil wires are wound for each magnetic pole tooth.

  The invention according to claim 1, which has been made to achieve the above object, is a stator in which an exciting coil is formed by winding a plurality of wires around each of a plurality of magnetic pole teeth projecting radially of an armature core. The magnetic pole concentrated winding structure includes a partition protruding in the circumferential direction around the magnetic pole teeth, and a space for winding the wire is defined by the number of the wire, and the magnetic pole is interposed via the partition. The plurality of wires are separately wound around a tooth.

  According to the concentrated magnetic pole winding structure of the stator according to claim 1, a partition protruding in the circumferential direction is provided around the magnetic pole teeth, and a space for winding the wire is defined by the number of wires, and the partition is formed. Thus, since the plurality of wires are wound separately, the plurality of wires do not cross each other, and the variation in the coil shape is reduced and the electrical characteristics can be improved.

  Next, according to a second aspect of the present invention, in the concentrated magnetic pole structure of the stator according to the first aspect, an insulator is detachably provided so as to cover the magnetic pole teeth, and the partition is formed integrally with the insulator. The wire is wound around the insulator.

  According to the concentrated magnetic pole winding structure of the stator according to claim 2, the insulator is detachably provided so as to cover the magnetic pole teeth, the partition is integrally formed on the insulator, and the wire is wound through the insulator. Therefore, the insulator can be changed to an optimum one according to the diameter and the number of windings of the wire, and the electrical characteristics can be improved by reducing the variation of the coil shape.

  The magnetic pole concentrated winding structure of the stator of the present invention has a partition protruding in the circumferential direction around the magnetic pole teeth, and a space for winding the wire is defined by the number of the wire, and a plurality of windings are formed via the partition. Since the wire rods are wound separately, the plurality of wire rods do not cross each other, and the variation in the coil shape is reduced and the electrical characteristics can be improved.

  In the stator magnetic pole concentrated winding structure of the present invention, the insulator is detachably provided so as to cover the magnetic pole teeth, the partition is integrally formed on the insulator, and the wire is wound through the insulator. The insulator can be changed to an optimum one according to the diameter and the number of turns of the coil, and as a result, the variation in coil shape can be reduced and the electrical characteristics can be improved.

  Next, a magnetic pole concentrated winding structure according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a configuration diagram showing a magnetic pole concentrated winding structure of an embodiment to which the present invention is applied, and FIG. 1 (b) is a ZZ sectional view in FIG. 1 (a).

  FIG. 2 is a detail of a Q portion in FIG. 1, and FIG. 2B is a diagram expressed from an arrow P direction in FIG. In FIG. (B), the wire is omitted.

  The stator 1 in FIG. 1 is used for an inner rotor type electric motor in which a rotor (not shown) is disposed inside. The inner rotor type electric motor includes an armature core 2 provided with a plurality of magnetic pole teeth 3 projecting radially from an inner peripheral surface toward an inner diameter side, and an exciting coil 6 wound around each magnetic pole tooth 3 in a concentrated manner. 7 is configured to supply current to the exciting coils 6 and 7 to excite the armature core 2 and rotate the rotor.

  The armature joule 3 is formed in a substantially cylindrical shape by laminating thin electromagnetic steel plates punched in a comb-like ring shape and coated on both sides with insulation coating in the axial direction.

  The armature core 2 is provided with an insulator 4 that includes a partition 5 that covers the magnetic pole teeth 3 and protrudes in the circumferential direction, and the coil 6 and the coil 7 are separately wound through the partition 5 to form a U , V and W three-phase excitation coils 6 and 7 are alternately formed in three.

  The coil 6 and the coil 7 are drawn and connected at the winding start side, and are drawn and connected at the winding end side. In addition, the coil 6 and the coil 7 are connected for each of the U phase, the V phase, and the W phase, and are configured to excite the magnetic pole teeth 3 by being energized between the winding start side and the winding end side.

  As shown in FIG. 2B, the insulator 4 is configured by engaging a pair of insulators 4a and 4b. The insulator 4a is formed with a protrusion 4c that is elastically displaced in the radial direction (the direction of the arrow Y in the figure), and the insulator 4b is formed with a locking groove 4d that engages with the protrusion 4c. The insulators 4a and 4b are configured to be detachable by displacing the protrusion 4c in the radial direction.

  The operation and effect of the magnetic pole concentrated winding structure of the embodiment having the above-described configuration will be described below.

  The magnetic pole concentrated winding structure of the stator 1 of the present embodiment has a partition 5 protruding in the circumferential direction around the magnetic pole teeth 3 of the armature core 2 to define a space for winding the wire by the number of wires. And since the several wire is wound separately via the partition 5, the variation in the shape of the coils 6 and 7 can reduce and electrical characteristics can be improved, without a plurality of wire crossing mutually.

  Further, in the magnetic pole concentrated winding structure of the stator 1 of the present embodiment, the insulator 4 is configured to be detachable by a pair of insulators 4 a and 4 b, and the partition 5 is configured integrally with the insulator 4. Since the wire is wound, the insulator 4 can be changed to an optimum one according to the diameter and the number of windings of the coils 6 and 7, and thus the variation in the shape of the coils 6 and 7 can be reduced. The characteristics can be improved.

  As mentioned above, although one Example of this invention was described, this invention is not limited to the said Example, It can take a various aspect. For example, in this embodiment, two wire rods are wound around the insulator 4 to form the two exciting coils 6 and 7. However, the number of wire rods is further increased so that each wire rod is defined by a partition. A coil may be formed. If necessary, the diameter and the number of turns of the wire rods of the exciting coil 6 and the exciting coil 7 may be different. Further, the winding diameter between the exciting coil 6 and the exciting coil 7 may be different. In that case, an insulator may be formed in accordance with the respective winding diameters of the exciting coil 6 and the exciting coil 7.

FIG. 1 of one embodiment to which the present invention is applied is a block diagram showing a magnetic pole concentrated winding structure of a stator, and FIG. 1 (b) is a ZZ sectional view in FIG. 1 (a).

It is the Q section details in Drawing 1, and (b) figure is a figure expressed from the arrow P direction in (a) figure.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Stator, 2 ... Armature core, 3 ... Magnetic pole tooth, 4, 4a, 4b ... Insulator, 4c ... Projection part, 4d ... Locking groove, 5 ... Partition, 6, 7 ... Excitation coil.

Claims (2)

In the stator, a magnetic pole concentrated winding structure in which a plurality of wires are wound around each of the plurality of magnetic pole teeth protruding radially of the armature core to form an exciting coil,
A partition that protrudes in the circumferential direction around the magnetic pole teeth is provided, and a space for winding the wire is defined by the number of the wires.
The plurality of wires are separately wound around the magnetic pole teeth via the partition,
A stator magnetic pole concentrated winding structure characterized by that. An insulator is provided so as to be detachable so as to cover the magnetic pole teeth, the partition is formed integrally with the insulator, and the wire is wound through the insulator.
The stator magnetic pole concentrated winding structure according to claim 1.

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