JPS5893441A - Coil end insulation for rotary electric machine - Google Patents

Abstract

PURPOSE:To insulate a coil end without exposure by respectively enclosing the roots of the coils at the coil end with insulating sheets, and taping the coil end with an insulating tape. CONSTITUTION:The root of the coil end projected from the end surface of a core 1 is enclosed with an insulating sheet 31 for each coil 3, and the coil end is taped with an insulating tape 2. In this manner, since the sheet 31 is enclosed with a core groove insulator 32 and the tape 2, the coils 3 of the coil end are not exposed.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to coil end insulation for a rotating electric machine, which allows coil ends to be insulated without exposing any exposed parts.

A conventional example of coil end insulation for a rotating electrical machine will be explained based on FIGS. 1 and 2. Fig. 1 shows the coil end protruding from the end face of the iron core 1 taped with electrical insulating tape 2, and as shown in Fig. 2, each coil 8 is taped with insulating tape 2 so that there is no exposed part. The coil 8 is shown inserted into the core groove. In the structure shown in Fig. 1, it is difficult to tape the base of the coil end, and the insulation of the coil 8 may deteriorate from this exposed part, and in the structure shown in Fig. 2, the taping work requires a lot of work. The disadvantage was that it required

SUMMARY OF THE INVENTION In order to eliminate the above-mentioned drawbacks, it is an object of the present invention to provide a coil end insulation for a rotating electrical machine that allows the coil end to be easily insulated without exposing the coil end.

Embodiments of the present invention will be described below based on the drawings.

FIGS. 8 and 4 show coil end insulation for a rotating electric machine according to Jin's invention, and parts indicated by the same reference numerals as in FIGS. 1 and 2 are the same parts.

The coil end insulation in these figures is such that the base of the coil end is wrapped around each coil 8 with an electrically insulating sheath 31 shown in FIG. 5, and this coil end is taped with an insulating tape 2. Even though both ends of the Caoji insulation sheet 31 are wrapped with the core groove insulation 32 and the insulation tape 2, the coil 8 is not exposed.

As described above, according to the present invention, in the coil end insulation of a rotating electrical machine, the base of each coil end is wrapped with an insulating sheet and then insulated with taping. This provides the advantage of being able to easily insulate the coil so that there are no exposed parts, thereby preventing deterioration of the insulation of the coil.

[Brief explanation of drawings]

1 and 2 are plan views showing coil end insulation of a conventional rotating electrical machine, FIG. 8 is a plan view showing coil end insulation of a rotating electrical machine according to the present invention, and FIG. 4 is a side view of FIG. 8. FIG. 6 is a perspective view showing the insulating sheet of FIG. 8. ! ...Iron core, 2...Insulating tape, 8...Coil,
31...Insulating sheet. Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 :1

Claims (1)

[Claims] l) Wrap the base of each coil end protruding from the end face of the core of the rotating electric machine with an electrically insulating sheet, and tape the coil end with electrically insulating tape so that no exposed part is exposed. Features coil end insulation for rotating electrical machines.