JPS5846940B2 - Insulator insert guide - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for manufacturing a stator for an electric machine, and in particular, a coil insertion apparatus that automatically inserts a coil and an insulator piece into a groove in a stator core. The present invention provides an insulated Yanai insertion guide for preventing a phenomenon in which a piece is inserted into the inside of a coil, resulting in poor insertion.

As shown in FIGS. 1 and 2, the stator of an electric machine according to the present invention is constructed with a coil 4 and an insulator piece 5 inserted into a groove 3 insulated by an insulating paper 2 of a stator core 1. Ru.

The stator of the electric machine described above is generally manufactured with a coil insertion device as shown in FIGS. 3-5.

In Figures 3 to 5, 6 is a blade and the coil 4
into the groove 3 insulated by the insulating paper 2 of the stator core 1, and is fitted into the toothed portion 1a of the stator core 1.

Reference numeral 7 designates an insulating Yanai insertion guide, which has a groove 7a on the side surface for guiding the insulator piece 5, and an upper end that is inserted into the stator core 1.
The stator core 1 is supported by contacting the toothed portion 1a of the stator core 1.

Reference numeral 8 denotes an insulator piece pushing body, which is slidably fitted into the groove 7a of the insulating Yanai insertion guide 7 and inserts the insulator piece 5 into the groove 3 insulated by the insulating paper 2 of the stator core 1. .

A setting block 9 supports the blade 6 and the insulating Yanai insertion guide 7 radially.

A coil pusher 10 is slidably fitted into a radially supported blade 6 and inserts the coil 4 into a groove 3 insulated by an insulating paper 2 of the stator core 1.

Reference numeral 11 denotes a coil push rod, which moves the coil pusher 10 up and down.

As shown in FIGS. 3 and 4, the coil 4 housed in the blade 6 is pushed up in the axial direction by a coil pusher 10 pushed up by a coil push rod 11. As shown in FIGS.

At the same time, the insulator piece 5 accommodated in the groove Ia of the insulating Yanai insertion guide 7 is pushed up in the axial direction by the insulator piece pusher 8.

The coil 4 and the insulator piece 5 are further pushed up, and the fifth
As shown in the figure, when pushed into the groove 3 insulated by the insulating paper 2 of the stator core 1, the coil pusher 10
Then, the insulator piece pushing body 8 descends.

In the above manner, the work of inserting a coil into a stator of an electric machine is performed.

By the way, in the conventional insulating Yanai insertion guide, as shown in FIG. 6 and FIG. Since the shape matches the inside of the insulating paper 2 that insulates the groove 3, the insulator piece 5 guided by the groove 7a can be inserted inside the coil 4 as shown in FIG. 8 during the coil insertion operation. This has the drawback that the outer coil 4a of the insulator piece 5 comes into contact with the toothed portion 1a of the stator core 1, causing poor insulation.

Further, it took a great deal of time to correct the aforementioned insertion failure.

The present invention eliminates the drawbacks of the conventional insulated Yanai insertion guide, and embodiments thereof will be described below with reference to FIGS. 9 to 12.

9 to 12, 1 is a stator core, 2 is an insulating paper, and 3 is a stator core 1 insulated by an insulating paper 2.
groove, 4 is a coil, 5 is an insulator piece, 6 is a blade, 12
1 is an insulating Yanai insertion guide according to the present invention, in which a groove 12a provided on the side surface for guiding the insulator piece 5 has an inclined groove 12b for expanding the insulator piece 5 at the upper end.

Both ends 2a of insulating paper 2 insulating groove 3 of stator core 1
is the angle θ from the inscribed surface of the groove 3 insulated by the insulating paper 2
Only open.

In the above configuration, the insulating piece 5 accommodated in the groove 12a of the insulating Yanai insertion guide 12 shown in FIG. 9 is moved as shown in FIG. 10 by the insulating piece pushing body 8 (FIG. 4). When the insulator piece insertion guide 12 is pushed up to the upper end, it is expanded outward by the inclined groove 12b.

When the coil 4 and the insulating piece 5 are inserted into the groove 3 insulated by the insulating paper 2 of the stator core 1, the coil 4 is pulled outward and comes into close contact with the end 2a of the insulating paper 2, but the insulating piece 5 Since the insulating material piece 5 is inserted while being expanded by the inclined groove 12b, the insulating material piece 5 is reliably inserted to the outside of the coil 4, and it is possible to prevent the occurrence of insertion failure.

The opening angle of the inclined groove 12b is determined in relation to the opening angle θ of the end portion 2a of the insulating paper 2 that insulates the groove 3 of the stator core 1.

Reference numerals 13, 14, and 15 in FIGS. 13 to 15 indicate another embodiment of the insulating Yanai insertion guide according to the present invention, and a groove 13a for guiding an insulating piece.

14a, 15a and inclined grooves 13b, 14b.

15b, and protrusions 13c, 14c, and 15c that hold insulating paper that insulates the grooves of the stator core.

In this case, the protrusions 13c, 14c, and 15c hold the insulating paper that insulates the grooves of the stator core, which prevents the insulating paper from falling down due to the tensile force when the coil is inserted. The effect of preventing occurrence is further enhanced.

In the above embodiment, the groove for expanding the insulating material piece was an inclined groove, but the point is that if the insulating material piece is inserted in a state in which it is expanded from the inscribed surface of the groove insulated by the insulating paper of the stator core. The same effect can also be obtained by providing an angle α in the groove 16a for guiding the insulating material piece, as shown in FIG. 16 for an example.

In this case, the groove machining becomes one step, which is advantageous in terms of cost.

As is clear from the above description, according to the present invention, the insulator piece can be reliably inserted outside the coil, and insertion failures can be prevented from occurring.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a stator of an electric machine according to the present invention, FIG. 2 is a cross-sectional view of a groove in the stator, FIG. 3 is a front cross-sectional view showing the main parts of a coil insertion device, and FIG. H-H in the diagram
5 is a front sectional view of the main part of the coil insertion device shown in FIG. The figure is a perspective view of a conventional insulated Yanai insertion guide, FIG. 7 is a local plan cross-sectional view showing the installation state of the conventional insulated Yanai insertion guide and the stator core, and FIG. 8 is a coil and FIG. 9 is a perspective view of the insulation Yanai insertion guide in an embodiment of the present invention, and FIG. 10 shows the state in which the insulator piece in FIG. 9 is pushed up. FIG. 11 is a perspective view of an insulated Yanai insertion guide according to an embodiment of the present invention shown in FIG. 13 to 15 are perspective views of an insulated Yanai insertion guide according to another embodiment of the present invention, and FIG. 16 is a cross-sectional view taken along line I-I' of the groove of the stator core, and FIG. 16 is a further embodiment of the present invention. It is a perspective view of the insulated Yanai insertion guide in FIG. 1... Stator core, 2... Insulating paper, 3... Groove,
4... Coil, 5... Insulator piece, 6... Blade, 7, 12° 13.14, 15, 16... Insulating Yanai insertion guide, 8... Insulator piece pushing body, 9 ... Setting block, 10... Coil pusher, 11... Coil push rod.

Claims (1)

[Claims] 1. A groove for guiding an insulator piece inserted in the axial direction into a groove of a stator core insulated with insulating paper, the width of the opposing groove being substantially equal to the groove of the stator core,
The insulated Yanai insertion guide is characterized in that the groove has an inclined portion so that the groove width widens toward the outer circumference of the stator core at least at a position adjacent to the stator core.