JPS5833946A - Lead wire connecting method for stator of rotary electric machine - Google Patents

Abstract

PURPOSE:To facilitate the connecting work and to improve the electrical and mechanical connecting strength of a lead wire by removing the insulating films of the ends of a coil end and the lead wire, temporarily fixing the bared parts to a taped connecting piece and soldering the connecting parts. CONSTITUTION:The insulating films of the ends of a lead wire 1 and a coil end 2 to be connected are removed, and ends are gathered and are temporarily fixed by a taped connecting piece 3, and the connecting parts 4 are mechanically and electrically connected with solder 5. Thus, the electrical and mechanical connecting strength can be sufficiently maintained by soldering, the steps of spirally twisting the lead wire 1 and the coil end 2 is not necessary, thereby simply facilitating the work.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of connecting a coil end of a stator of a rotating electrical equipment and a lead wire.

In general, soldering, welding, brazing with silver brazing, caulking with crimp terminals, etc. are known methods for connecting the coil ends and lead wires in stators of rotating electric equipment. However, soldering requires less material cost. Although it has the advantages of being inexpensive and highly reliable with excellent electrical and mechanical connection strength, it requires processing to remove the insulating film from the ends of the coils to be connected, and In order to maintain mechanical connection strength, it was necessary to twist the lead wire and coil end in a spiral shape. In addition, welding
There is no need to remove the insulation coating from the end of the coil to be connected, and there is no need to twist the lead wire and the end of the coil.
During welding, the temperature at that part becomes high, resulting in a decrease in electrical and mechanical connection strength and deterioration of the insulation coating of the lead wire and coil near the connection part. Further, brazing with silver brazing or the like has substantially the same advantages and disadvantages as welding, and brazing has the disadvantage that materials are expensive. Furthermore, crimping with crimp terminals requires expensive crimp terminal materials, and when a large number of coils are to be crimped,
When the thickness of the coil to be crimped is relatively thin, the electrical
There was a drawback that the mechanical connection strength decreased.

As described above, the conventional methods have both advantages and disadvantages, and it has not been possible to obtain high-quality rotating electrical equipment at low cost.

The present invention aims to solve the above problems and provide a low-cost, high-quality rotating electric device.

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a method of connecting a lead wire 1 and a coil end 2 to be connected to the lead wire 1 according to an embodiment of the present invention. It shows,
After removing the insulating film from the tip of the lead wire 1 and the tip of the coil end 2, temporarily fix them with a tape-like connection piece 3, and then mechanically and electrically connect the connection part 4 with solder 6. do.

According to this method, the electrical and mechanical connection strength is sufficiently maintained by soldering, and there is no need for man-hours for twisting the lead wire 1 and the coil end 2 in a circular shape. The work is simple and can be mechanized relatively easily.

The tape-shaped connecting piece 3 may be connected using a bar-shaped connecting piece 6 as shown in FIG. After temporarily fixing the connection piece 7 with solder, the connection part 4 may be fully heated to complete the soldering process.

In addition, as shown in FIG. 6, holes 8 of an appropriate size and number are provided in the tape-like connecting piece 3, and the marking is sometimes done on the connecting part 4.
It is also possible to impregnate the ball evenly.

Furthermore, as shown in Fig. 6, if you use the protrusion 9 that is created when making the hole 8 and make the protrusion 9 face inward when fixing one piece as shown in Fig. 7, a stronger connection can be achieved. becomes possible.

In addition, since the connecting portion must be insulated and attached to the rotating electrical equipment fixing beam, as shown in FIG.

5゛-1 6 and insulating tape 10 are superimposed on each other, and after temporary fixing, the connection part 4 is heated so that the insulation work of the connection part can be completed as well as the soldering work. good.

As is clear from the above description, according to the present invention, electrical and mechanical strength can be ensured by soldering, and there is no need to twist the lead wires and coil ends in a circular shape. Connection work becomes easier. Furthermore, the tape-shaped connection piece and the solder are inexpensive in terms of material, and as a result, a low-cost, high-quality rotating electrical device can be obtained.

[Brief explanation of the drawing]

FIG. 1 is a front view showing the connection between the lead wire and the coil end according to the first embodiment of the present invention, and FIG.
3 is a front view of the second embodiment, FIG. 4 is a perspective view of a connecting piece with a solder according to the third embodiment, and FIG. 6 is a cross-sectional view of the fourth embodiment. FIG. 6 is a perspective view of such a connecting piece, and FIG. 6 is a cross-sectional view of the connecting piece according to the sixth embodiment.
This figure is a cross-sectional view showing a connection state using the same connection piece, and FIG. 8 is a perspective view of the sixth embodiment. 1... Lead wire, 2... Coil end, 3
...Tape-shaped connection piece, 4...Connection part'
, 6...No. Name of agent: Patent attorney Toshio Nakao and 1 other person @1
5+1 3 ink 2r! A & 31 a 4 Garden 5 Figure 16 Figure C171!1

Claims (4)

[Claims] (1) After removing the insulating film from the tips of the stator coil end and lead wire, and temporarily fixing the coil end and the bare twilling part of the lead wire with a tape-like connection piece,
A method for connecting lead wires of a stator of rotating electrical equipment by attaching a solder. (2) A rotary electric equipment stator according to claim 1, which is formed by overlapping solder on the tape-like connection piece? How to connect lead wires. (3) A lead wire connection for a stator of a rotating electrical equipment according to claim 1, wherein the tape-shaped connection piece is provided with a hole, and a protrusion that contacts the coil end and the lead wire is provided on the periphery of the hole. Method. (4) A lead wire connection method for a stator of a rotating electrical equipment as set forth in claim 1 or 2, wherein the tape-shaped connection piece and the solder are laminated with an insulating tape.