JPS6344975Y2 - - Google Patents

Description

[Detailed description of the invention] In general, the insulator and coil support structure in the lower part of the inner core transformer are located at the ends provided between the coil 1 and the core yoke portion 2, as shown in FIGS. 1 and 2. It consists of a section insulator 3 and a coil pedestal 4 for supporting the coil. Although the coil pedestal 4 is not necessary for insulation purposes, the coil support fitting 5 is arranged below the core yoke surface 2 so as to be as far away from the coil 1 as possible to reduce stray loss.
It is inserted between this to support the coil.

In such a structure, as shown in FIG. 2, the conventional lead 6 of the inner coil has a necessary space provided in the end insulator 3 and the coil holder 4 for the lead to take out, and the lead 6 is brought out from this space to the outside. As shown in FIGS. 3 and 4, the wiring was run horizontally in the space between the tank 7 and the coil support fitting 5, especially in the vicinity of the coil support fitting 5. For this reason, the strength of the coil support fitting 5 is weakened due to the space through which the lead passes, and since it is necessary to provide an insulating distance between the lead 6 and both the reinforcement 8 of the coil support fitting 5 and the tank 7, There was a drawback that a distance greater than the originally required insulation distance was required between the coil 1 and the tank 7, and the tank 7 had to be made large.

This invention was made to eliminate the above-mentioned drawbacks, and will be explained below with reference to FIGS. 5 to 8. That is, in the present invention, two grooves 4a and 4b extending in the axial direction are provided in the coil holder 4, and the leads 6 are run in these grooves for wiring. Above groove 4
The positions of a and 4b are selected so that they have a predetermined insulation distance from the leads 6 passed therein, the coil 1, and the support fitting 5, and have an appropriate insulation distance between the leads 6. Ru. Other configurations are the first
Since it is the same as that of FIGS. 4 to 4, the explanation will be omitted.

According to such a structure, the coil support fitting 5 does not require any processing, so its strength does not decrease, and there is no need to make the tank 7 larger than necessary. Further, as shown in FIG. 8, since the lower part of the tank 7 can be compressed to near the coil support fitting 5, oil can also be saved.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram showing a conventional transformer winding support device, FIG. 2 is a perspective view showing a part of FIG. 1 in cross section,
3 is a schematic front view showing the lead wiring of a conventional transformer, FIG. 4 is a side view thereof, FIG. 5 is a schematic diagram showing an embodiment of this invention, and FIG. FIG. 7 is a schematic front view showing lead wiring of a transformer embodying the invention, and FIG. 8 is a side view of FIG. 7. In the figure, 1 is the coil, 2 is the core yoke, 3 is the coil end insulator, 4 is the coil pedestal, 4a, 4b are the grooves, 5 is the coil support fitting, 6 is the lead, 7 is the tank, and 8 is the reinforcement. It is a member. In the drawings, the same reference numerals indicate the same or corresponding parts.

Claims (1)

[Scope of utility model registration request] A transformer winding characterized in that an axial groove is provided in the coil holder inserted between the coil end insulator and the coil support fitting of the transformer, and the inside wiring of the transformer is routed through the groove. Support device.