JPH10322954A - Transformation preventer for coil of salient-pole-type rotor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To see to it that a coil is not transformed, even if the press bolt of a pole shoe is fastened, in a salient pole type of rotor where coils are attached so as to surround each periphery under the pole shoes of the heads of the plural pieces of rotor magnetic poles of a salient-pole-type rotating machine which has a solid pole type of salient pole, and a plurality of spring out preventive metal fittings bridged between adjacent coils are provided at proper intervals in the axial direction. SOLUTION: A deformation preventive for the coil of a salient-pole-type rotor is provided with a coil deformation preventive metal fitting 11 for preventing the deformation of the coils 3 and 3', supporting the coils 3 and 3', and the coil deformation preventive metal fitting 11 is made roughly into of V-shape which has a specified angle geared to the number of salient poles, so that it can bear each coil 3 and 3' of the adjacent rotor magnetic poles 2 and can contact each base of respective magnetic pole 2 and 2', and it is arranged in a position under the jump-out preventive metal fitting 7.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for preventing a coil of a salient pole type rotor from being deformed, and more particularly to a head of a plurality of rotor magnetic poles of a salient pole type rotating electric machine having a solid pole type salient pole. The present invention relates to an apparatus for preventing deformation of a coil of a salient pole type rotor having a coil attached around the outer periphery of the coil.

[0002]

2. Description of the Related Art A conventional salient pole type rotor will be described with reference to FIG. 3A and 3B show a state in which a coil is mounted on a conventional salient pole type rotor, wherein FIG. 3A is a partial sectional front view, and FIG. 3B is a partial perspective view of FIG. In FIG. 3, 1 is a salient pole type rotor, 2 is a rotor magnetic pole, 3 is a coil,
4 is a pole shoe, 5 is a holding plate, 6 is a holding bolt,
Reference numeral 7 denotes a projection preventing bracket, 8 denotes a stud, 9 denotes a fastening nut, K denotes a base, and the coil 3 is attached to the head and bottom of the plurality of rotor magnetic poles 2 via the holding plate 5. , The pole shoe 4 is held down by being tightened with a holding bolt 6, and the projection prevention metal fitting 7,
It is configured to be fixed with a tightening nut 9 via a stud 8. And, the projection prevention metal fitting 7 is the coil 3
Are arranged at predetermined intervals in the axial direction so as not to hinder the ventilation in the axial direction and the radial direction.

[0003]

However, the conventional salient pole type rotor shown in FIG. 3 has a problem that when the holding bolt 6 is tightened to the pole shoe 4, the coil 3 is distorted to the inner diameter side.

[0004]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a coil which surrounds a plurality of rotor magnetic poles of a salient-pole type rotating electric machine around the outer periphery of respective heads below pole shoes. A salient pole type rotor provided with a plurality of protrusion prevention brackets bridged between the coils adjacent to each other at appropriate intervals in the axial direction.
A coil deformation preventing bracket having a substantially V-shaped cross section and having a predetermined angle corresponding to the number of salient poles formed so as to support the lower part of each coil of the rotor magnetic poles adjacent to each other and to contact the base of each magnetic pole. It is an object of the present invention to provide a salient pole type rotor coil deformation preventing device which is disposed at a position below the protrusion preventing bracket.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a coil deformation preventing device according to the present invention will be described below with reference to FIGS. 1A and 1B show an embodiment of a coil deformation preventing device according to the present invention, in which FIG. 1A is a front view of a coil deformation preventing bracket, FIG. 1B is a side view of FIG. (C) is a partial cross-sectional front view of the state in which the coil deformation preventing bracket of (A) is connected to and attached to two adjacent rotor magnetic poles, and FIG. 2 is a salient pole type coil deformation preventing bracket shown in FIG. FIG. 3A is a partial cross-sectional front view showing a state attached to a rotor, and FIG. 3B is a partial perspective view of FIG. 1 and 2, 1 is a salient pole type rotor, 2 and 2 'are rotor magnetic poles, 3 and 3' are rotor coils (hereinafter referred to as coils), 4 is a pole shoe, 5 is a holding plate, and 6 is A holding bolt, 7 is a projection prevention bracket, 8 is a stud, 9 is a fastening nut, 11 is a coil deformation prevention bracket, 11a is a ventilation part, 11b and 11c are stud bolt holes, and K is a base. 1 and 2, a pole shoe 4 of a plurality of rotor magnetic poles 2 of a salient pole type rotating electric machine having a solid pole type salient pole, according to the present invention. The coils 3 are mounted so as to surround the respective outer circumferences below the respective coils, and a plurality of anti-projection fittings 7 for preventing the projections due to the centrifugal force bridged between the adjacent coils 3 are provided appropriately in the axial direction. In the salient pole type rotor 1 provided at an interval, a coil deformation preventing bracket 11 for supporting the coil 3 and preventing deformation of the coil 3 is provided. Are mounted so as to contact the respective base portions K of the adjacent rotor magnetic poles 2 and 2 'so as to support the lower portions of the coils 3 and 3' provided on the magnetic poles 2 and 2 'adjacent to each other. It is formed in a substantially V-shape (angle shape) having a predetermined angle (90 ° in the case of four poles), and is disposed at a position below the protrusion 7 for preventing the coil 3 from projecting and tightening and fixing the stud 8. Is done. The coil deformation preventing bracket 11 has a light and strong structure.

[0006]

According to the present invention, the coil deformation preventing bracket of the salient pole type rotor according to the present invention is constituted as described above, and the coil is sandwiched between the rotor magnetic poles by the coil protrusion preventing bracket and the stud. Since the coil is supported, the coil is not deformed even when the holding bolt of the pole shoe is tightened. or,
Ventilation part 11a formed below coil deformation prevention fitting
As a result, the ventilation area in the axial direction is ensured, and the ventilation in the radial direction is not obstructed.

[Brief description of the drawings]

FIG. 1 shows an embodiment of a coil deformation preventing device of a salient pole type rotor according to the present invention, wherein (A) is a front view of a coil deformation preventing bracket, (B) is a side view of (A), (C) is a partial cross-sectional front view of the state in which the coil deformation preventing bracket of (A) is attached by connecting two adjacent rotor magnetic poles.

FIGS. 2A and 2B show a state in which the coil deformation preventing bracket shown in FIG. 1 is attached to a salient pole type rotor, wherein FIG. 2A is a partial sectional front view, and FIG. 2B is a partial perspective view of FIG. .

3A and 3B show a state in which a coil is attached to a conventional salient pole type rotor, where FIG. 3A is a partial cross-sectional front view and FIG.
3 is a partial perspective view of FIG.

[Explanation of symbols]

 1: salient pole type rotor 2, 2 ': rotor magnetic pole 3, 3': coil 4: pole shoe 5: holding plate 6: holding bolt 7: projection prevention fitting 8: stud bolt 9: fastening nut 11: coil Deformation prevention fitting 11a: Ventilation part 11b, 11c: Stud bolt hole K: Base

Claims (1)

[Claims] A coil is attached around the outer periphery of each of the heads below a pole shoe of a plurality of rotor magnetic poles of a salient pole type rotating electric machine, and a plurality of bridges are bridged between adjacent coils. In a salient pole type rotor in which protrusion prevention metal fittings are provided at appropriate intervals in the axial direction, the salient pole type rotor may support a lower portion of each coil of the rotor magnetic poles adjacent to each other and contact the base of each magnetic pole. A salient pole, wherein a coil deformation preventing bracket having a substantially V-shaped cross section and having a predetermined angle corresponding to the number of salient poles formed so as to be formed is disposed at a position below the projection preventing bracket. A device to prevent deformation of the coil of the rotor.