JPH07114537B2 - Field pole of rotating electrical equipment and field pole winding device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a field pole of a rotary electric machine, and particularly refers to making an exciting coil forming a stator compatible with multiple models and increasing a space factor.

[Conventional technology]

FIG. 12 shows a conventional magnetic pole coil device. In the configuration of this figure, a cylindrical yoke 1, a pole core 2 provided inside the yoke 1, a coil 3 wound around the pole core 2,
A nozzle 5 for winding the coil 3 is included. Figure 13 shows
FIG. 13 is a diagram showing a nozzle trajectory when the coil of FIG. 12 is wound.

In this conventional coil device, as shown in FIG. 12, a plurality of insulating coated copper wires 3 are bundled, and the bundled copper wires 3 are ejected from a nozzle 5 and an arrow A is drawn on the nozzle 5.
The copper wire 3 is wound around the pole core 2 fixed to the inner peripheral wall of the cylindrical yoke 1 shown in FIG.

As another conventional technique, there is a method for manufacturing a field coil described in JP-A-58-79446. In this conventional method, a rectangular conductor is used as a field coil, which is wound in advance from the inner circumference to the outer circumference, and a pole core is inserted into the inner circumferential space of the field coil by the field coil to assemble.

[Problems to be Solved by the Invention]

However, in the conventional coil device shown in FIG. 12, when it is attempted to reduce the width B of the brim portion 2a within a range in which the wound copper wire 3 does not come off from the brim portion 2a of the pole core 2, the gap between the adjacent pole cores 2 is reduced. Since it is impossible in design to make the width D of the nozzle 5 smaller than the gap C, it is impossible to insert the nozzle 5 into the yoke inner peripheral wall side of the brim portion 2a. By pulling in the radial center direction and twisting the copper wire 3 for each winding, the brim part
Space area where the copper wire 3 does not exist outside the diameter of 2a (loss space)
E is generated, which limits the degree of winding alignment and the space factor (ratio of the copper wire cross-sectional area to the winding area), which has been an obstacle to improving the output of the rotating electrical machine.

In another conventional method for manufacturing a field coil, since a rectangular conductor is used, there is no hindrance to the degree of alignment, but various cross-sectional areas are required to adjust the conductor resistance of the field coil according to the model of the rotating electrical equipment. There arises a problem that a setup for winding the field coil of the flat conductor is required.

Because, as the applications of rotating electrical equipment expand, there are many cases in which only the magnetomotive force of the coil is changed and used.
This is because in this case, it is necessary to adjust the conductor resistance of the coil in accordance with the magnetomotive force of the coil to suppress the copper loss / the amount of used coil and improve the economical efficiency.

Therefore, in view of the above problems, it is an object of the present invention to provide a magnetic pole coil device capable of winding a coil in a high space factor and facilitating adjustment of a conductor resistance of the wound coil.

[Means for Solving the Problems]

In order to solve the above problems, the present invention has a main coil and an auxiliary coil as a coil wound around a coil bobbin in a field pole of a rotary electric machine. The main coil is formed by adhering a plurality of conducting wires having the same cross-sectional shape in a row so as to form multiple parallel wires. The auxiliary coil is a conductor wire that is in parallel with the main coil. The main coil and the auxiliary coil are wound around the coil bobbin in multiple stages.

[Work]

According to the field pole of the rotary electric machine of the present invention, a plurality of conducting wires are adhered by the main coil so as to form one row of multiple parallel wires, and the winding is directly wound on the coil bobbin, so that the wire winding is eliminated and the aligned winding is performed. It is possible to achieve high space winding. In addition, the auxiliary coil allows a conductor having a round cross section to be arranged in parallel with the main coil and wound, and the diameter of the conductor can be changed according to the model of the rotating electric device, so that the resistance of the conductor can be easily adjusted. The coil bobbin thus wound is fitted to the pole core and fixed to the yoke.

〔Example〕

Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a partial cross-sectional view of a field pole of a rotary electric machine according to a first embodiment of the present invention. Before describing the configuration of this figure, the outline of the magnetic pole coil device will be described. FIG. 2 is a schematic sectional view of the stator formed by the field poles of FIG. FIG. 1 shows a cylindrical yoke 1 that forms a magnetic path, a coil 10 that generates a magnetomotive force, and a coil bobbin 11 that houses the coil 10.
The coil bobbin 11 is provided on the inner peripheral wall 1a of the yoke 1.
A coil 10 having four pole cores 12 arranged at 90 ° intervals with the coil bobbin 11 provided around the pole cores 12 interposed therebetween.
Are wound to generate a magnetic field. Returning to FIG. 1, this figure shows the components not shown in FIG.
Pole core bonding surface between the inner peripheral wall 1a of the yoke 1 and the pole core 12
Four coils each having a round cross section are wound in multiple rows inside a coil bobbin 11 that is sandwiched between a screw 20 for fastening and fixing 12a and an inner peripheral wall 1a and a flange portion 12b of the pole core 12. A main coil 10a composed of four parallel lines to be bonded, wherein the width A of the four parallel lines 10a is 75% or more of the width B of the coil bobbin 11, and the main coils 10a are arranged in line on the four parallel lines 10a. It also includes a single auxiliary coil 10b having a circular cross section. Although it has been stated that four coils are adhered in a line with respect to the main coil 10a composed of four parallel wires, this is for ease of explanation, and in general, a large number of four or more coils may be used.

Next, the coil bobbin will be described. FIG. 3 is an exploded view of the coil bobbin. The coil bobbin 11 shown in the figure is made of a resin elastic and insulating material for easy mounting along the yoke inner peripheral wall 1a and for insulation prevention. The pole core bonding surface 12a is formed into a cylindrical yoke inner peripheral wall 1a.
To fix with a screw to a, the cylindrical inner peripheral hole 11a through which the pole core 12 is inserted, the main coil 10a and the auxiliary coil 10b are wound, and are sandwiched by the pole core flange 12b and the yoke inner peripheral wall 1a. It includes a tubular portion 11b. FIG. 4 is a view showing details of the coil bobbin, where (a) is a sectional view, (b) is a plan view, and (c) is a perspective view. In the cylindrical portion 11b of this figure,
Flange 11c and 1 protruding at right angles to both ends
1d is arranged to fix the winding coil 10. Further, a part of the flange 11c is cut out to form a relief 11e for the winding start line of the coil 10. By configuring the coil bobbin 11 in this way, it is possible to easily wind the coil 10 around the coil bobbin 11 and then easily attach the coil 10 together with the pole core 12 to the yoke 1.

Next, the coil will be described. FIG. 5 is a diagram showing a combination of the main coil and the auxiliary coil. Main coil 10a in this figure
Consists of four parallel conductors, which are adhered to each other in a line by the adhering portion 10c. By winding four parallel wires around the coil bobbin 11 in this way, line breakage, so-called irregular winding is eliminated, and multi-stage winding can be very stably aligned and wound, achieving high space winding. it can. When the main coil 10a is wound around the coil bobbin 11, the auxiliary coil 10b, which is a single conductive wire, is also wound along with the main coil 10a. The diameter of the auxiliary coil 10b can be changed as shown in the figure, and the main coil 10b
The a is combined with an auxiliary coil with a different wire diameter depending on the model of rotating electrical equipment. With this combination, a model that requires a large magnetomotive force requires a large number of turns N or an exciting current. With this, however, the resistance of the conductor becomes large, and as a result, heat generation due to copper loss occurs. Therefore, the diameter of the conductor can be increased to reduce the resistance of the conductor, and this heat generation can be suppressed. In addition, in a model that requires a small magnetomotive force, unnecessarily increasing the diameter of the conductor increases the amount of copper used, which is not only uneconomical but also disadvantageous in that the weight increases. The combination of the above makes it possible to easily reduce the diameter of the conductor in order to eliminate this disadvantage.

FIG. 6 is a diagram showing a modification of the combination of the main coil and the auxiliary coil. As shown in this figure (a), the diameter d of the main coil 10a
_When the diameter d ₂ of the auxiliary coil 10b becomes too large as compared with ₁ , the number of the auxiliary coil 10b is changed from one to a plurality as shown in FIG. When the wire diameter d ₂ of the auxiliary coil 10b is larger than the wire diameter d ₁ of the main coil 10a, the degree of alignment in winding is deteriorated and the high space factor is hindered. Guarantee the degree and increase the space factor. As shown in FIG. 6 (c), in the main coil 10a, four parallel wires having a wire diameter d ₁ are press-molded to make the distance between the two circular surfaces equal to the wire diameter d _{3 of the} auxiliary coil 10a. It is also possible to change the conductor resistance. As shown in FIG. 6 (d), the main coil 10
Even when a is a rectangular copper wire 10e instead of the four parallel wires, the function and effect are the same as those described above.

Next, the winding of the coil 10 around the coil bobbin 11 will be described. FIG. 7 is a perspective view showing winding of a coil around a coil bobbin. As shown in this figure, when winding the coil bobbin, start winding the coil bobbin at the beginning 11c
After the insertion, the coil bobbin 11 is rotated by a mechanism (not shown) so that the coil bobbin 11 is parallel to the elliptic cylindrical portion 11b.
Main coil (4 parallel lines) 10a and auxiliary coil (single line) 10b
Are gathered on the guide 13 at the time of winding and are wound at the same time. FIG. 8 is a sectional view of a coil bobbin wound with a coil.
When the coil winding reaches the required number of windings as shown in Fig. 8, the coil 10 is cut, and the winding end is not shown, but the winding start 10c
Is bent so as to be parallel to the coil bobbin flange 11c as shown in the drawing. By this bending, the so-called winding start wire portion 10c does not protrude from the inner side surface of the pole core 12 toward the inner diameter side by the escape 11e of the coil bobbin.

FIG. 9 is a perspective view of a coil bobbin around which a coil is wound. The coil bobbin 11 in FIG. 9 (a) is shown in FIG. 5 (a),
The coil bobbin 11 of FIG. 9 (b) is obtained by winding the coil 10 shown in FIGS. 6 (b) and 6 (c) and FIGS. 6 (b) and 6 (c). It was obtained by winding 10 windings, and the winding start of each coil 10
c, The current is supplied from the power supply by the winding end 10d.

FIG. 10 is a view showing the terminal of the coil winding as indicated by arrow A in FIG. As shown in the figure,
Terminal 15 shaped to suit different wire diameters of c and end of winding 10d
Can be connected to the coil end by crimping to cope with changes in wire diameter. In this manner, by winding the coil 10 around the coil bobbin 11, the main coils 10a are aligned and adhered in a uniform width. Output and miniaturization can be achieved. Further, the main coil 10a is left as it is, and the auxiliary coil 1 is used.
The conductor resistance can be changed only by changing 0b, which makes it possible to support a variety of small-scale production of rotating electrical equipment.

FIG. 11 is a diagram showing a coil winding device for a coil bobbin. This figure shows an auto reel 21 for sending multiple parallel wires, which is the main coil 10a, and the main coil 10a of about 5
00kg wound hoop material 21, main coil 10a strain relief roller 22, main coil 10a tension roller 23, and a plurality of different wire diameters 10b-1, 10b-2, 10b-3, 10b. -4 auxiliary coils 10b each include a wire rod pack 24 packed with about 100 kg. According to this coil bobbin coil winding device, corresponding to the winding of the coil on the coil bobbin, the main coil 10a of multiple parallel wires and the plurality of single wire auxiliary coils 10b are arranged adjacent to each other to make a model of a rotary electric device. On the other hand, since the main coil 10a is made common and only the auxiliary coil 10b can be changed, the conductor resistance can be quickly set up and changed when the model of the rotary electric device to be manufactured is changed. Also, the area for installing the coil winding device is small, and automatic setup can be supported.

〔The invention's effect〕

As described above, according to the present invention, a main coil in which a plurality of conductive wires having the same cross-sectional shape are bonded to each other so as to form a multi-parallel wire and an auxiliary coil of a copper wire in parallel with the main coil are provided. Since the coil bobbin is wound in multiple stages, it is expected that a high space factor winding is achieved by improving the degree of coil alignment, and that the production of various small quantities is improved by facilitating adjustment of the conductor resistance of the coil.

[Brief description of drawings]

1 is a partial sectional view of a field pole of a rotary electric machine according to a first embodiment of the present invention, FIG. 2 is a schematic sectional view of a stator constituted by a field magnetic field of FIG. 1, and FIG. 3 is a coil bobbin. FIG. 4 is a view showing details of the coil bobbin, FIG. 5 is a view showing a combination of the main coil and the auxiliary coil, and FIG. 6 is a view showing a modified example of the combination of the main coil and the auxiliary coil. FIG. 7 is a perspective view showing coil winding around a coil bobbin, FIG. 8 is a sectional view of a coil bobbin around which a coil is wound, FIG. 9 is a perspective view of a coil bobbin around which a coil is wound, and FIG. 9 is a view showing a terminal of the coil winding along arrow A in FIG. 9, FIG. 11 is a view showing a coil bobbin coil winding device, FIG. 12 is a view showing a conventional magnetic pole coil winding device, and FIG. FIG. 13 is a diagram showing a nozzle trajectory when the coil of FIG. 12 is wound. In the figure, 1 ... yoke, 10 ... coil, 10a ... main coil, 10b ... auxiliary coil, 11 ... coil bobbin, 12 ... pole core.

Claims (7)

[Claims] 1. A rotation having a plurality of pole cores fixed to an inner peripheral wall of a cylindrical yoke at regular intervals, coil bobbins fitted to the respective pole cores at their outer circumferences, and coils wound around the coil bobbins. In a field pole of an electric device, the coil is composed of a main coil and an auxiliary coil, and the main coil is bonded so that a plurality of conductive wires having the same cross-sectional shape are arranged in a row to form multiple parallel wires, and the auxiliary coil is In order to set the conductor resistance of the coil to a predetermined value, the coil bobbin has a predetermined cross-sectional area and is composed of a conductor wire parallel to the main coil, and is wound around the coil bobbin in multiple stages. Field pole. 2. The field pole of a rotary electric device according to claim 1, wherein the main coil is press-molded from a circular sectional shape. 3. The field pole of a rotary electric machine according to claim 1, wherein the main coil is a flat conductor wire. 4. The field pole of a rotary electric machine according to claim 1, wherein the cross-sectional area of the auxiliary coil changes depending on the model of the rotary electric machine. 5. The field pole of a rotary electric machine according to claim 1, wherein the auxiliary coil comprises a plurality of conductive wires. 6. The field pole of a rotary electric machine according to claim 1, wherein a flange of the coil bobbin is partially cut. 7. An auto reel for sending out a main coil which is a multi-parallel wire, and a plurality of wire rod packs having a plurality of auxiliary coils of different wire diameters adjacent to the auto reel,
A field pole winding device for rotating electrical equipment, characterized in that an auxiliary coil is selected and sent out together with the main coil.