JPH0340065Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an improvement of a fixing device for a lead wire of a rotating electric machine.

Conventionally, there have been devices of this type as shown in FIGS. 1 to 3. FIG. 1 is a perspective view of the rotating electric machine. In FIG. 1, 1 is a rotating electric machine, 2 is a seat of a terminal box that houses the lead wire 9 drawn out from inside the rotating electric machine, and 3 is a fixed part that fixes the lead wire 9. . FIG. 2 is an enlarged front view of the lead line fixing portion 3, seen from - in FIG. 3. Further, FIG. 3 is a cross-sectional view taken along the line - in FIG. 2. Reference numeral 5 denotes a metal fitting that is fixedly integrated with the seat 2 of the terminal box by welding or the like, and 9 is a lead wire that is sandwiched between an insulating packing 6, a corrugated insulating packing 7, and a corrugated fitting 8. These are fixed to the metal fitting 5 with bolts 10 and nuts 11. A crimp terminal is attached to the tip of the lead wire 9 by caulking.

Since the conventional lead wire fixing device was constructed as described above, there were many parts, and the tightening of the bolt 10 and nut 11 came into contact with the corrugated metal fitting 8 unevenly, resulting in uneven tightening on the left and right sides. There were cases where the lead line became deformed due to too much pressure, or loosened due to insufficient pressure. Further, during assembly, there was a drawback that workability was poor due to the large number of parts.

This idea was made in order to eliminate the drawbacks of the conventional ones as mentioned above, and by using an insulating plate, the corrugated insulation packing and corrugated metal fittings were abolished, and the opening could be fixed in one place. The present invention provides a wire fixing device.

An embodiment of this invention will be described below.
Figure 4 is an enlarged front view of the lead wire fixing part;
This is a view from - in the figure. FIG. 5 is a right side view of FIG. 4. FIG. 6 is an enlarged exploded perspective view of the L-shaped metal fitting 12 and the insulating plate 13 in this invention. The insulating plate 13 has a protrusion 14 on one end surface, a bolt hole 18 for a tightening screw on the other end, and a guide protrusion 16 and an output line holding groove 20 in the center. Reference numeral 12 denotes an L-shaped metal fitting that is fixedly integrated with the seat 2 of the terminal box by welding or the like, and this L-shaped metal fitting 12 has an elongated hole 15 into which the protrusion 14 of the insulating plate 13 is inserted, and a guide into which the guide protrusion 16 is inserted. There are holes 17 and bolt holes 19 for tightening screws.

Next, a method of fixing the lead wire will be explained. The lead wire 9 pulled out from the inside of the rotating electrical machine is sandwiched between the insulating gasket 6 on the top surface of the L-shaped fitting 12 and the lead wire holding groove 20 of the insulating plate 13, and then the protrusion 14 of the insulating plate 13 is inserted into the L-shaped fitting. After inserting the other guide protrusion 16 into the guide hole 17 while inserting it into the elongated hole 15 of 12, pass the bolt 10 through the bolt hole 18 provided at the other end of the insulating plate 13 and tighten it with the nut 11. Fixed to the glyph bracket.

As explained in the above embodiments, the corrugated insulating packing and the corrugated metal fittings are eliminated and an insulating plate is used, and the structure is such that the protrusion on the end face of this insulating plate is inserted into the long hole of the L-shaped metal fitting to fix it. The tightening part can be reduced to one location, reducing the number of parts and improving work efficiency. Furthermore, reliability can also be improved by uniformly fixing the lead wires.

As described above, according to this invention, it is possible to obtain a lead wire fixing device for a rotating electrical machine that has a small number of parts and is easy to assemble.

[Brief explanation of the drawing]

Figures 1 to 3 show a conventional rotating electrical machine's lead wire fixing device. Figure 1 is a perspective view showing the external appearance of the rotating electrical machine, with the lid of the terminal box removed so that the lead wire fixing device can be seen. There is. Fig. 2 is a front view taken in the direction of the arrow in Fig. 3, Fig. 3 is a side view taken in cross section from Fig. 2, and Figs. 4 to 6 show one embodiment of this invention. Fig. 5 arrow view -
5 is a front view of FIG. 4, and FIG. 5 is a right side view of FIG. FIG. 6 is an exploded, enlarged perspective view showing the L-shaped metal fitting and insulating plate of this invention. In the figure, 1 is the rotating machine, 2 is the seat of the terminal box, and 3
10 and 11 are fasteners (bolts, nuts), 12 is an L-shaped metal fitting, 13 is an insulating plate,
14 is a projection, 15 is an engaging portion (elongated hole), 18 is a fastening portion (bolt hole), and 19 is a fastening portion (bolt hole). Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims (1)

[Scope of Claim for Utility Model Registration] A lead wire device for a rotating electric machine having fasteners 10, 11, an L-shaped fitting 12, and an insulating plate 13, wherein the L-shaped fitting 12 has a fastening portion 19 at one end. , has an engaging portion 15 at the other end, and has a seat 2 of a terminal box of a rotating electric machine.
The insulating plate 13 has an engaging protrusion 14 at one end and a fastening part 18 at the other end, and the engaging protrusion is engaged with the engaging part 15 of the L-shaped fitting 12, and the fastening part 18 is engaged with the engaging part 15 of the L-shaped fitting 12. A lead wire fixing device for a rotating electric machine, in which a part 18 is fastened to a fastening part 19 of an L-shaped fitting 12 by fasteners 10 and 11.