JPH0136969B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a method for manufacturing a ballast for a discharge lamp, and more particularly to a method for easily manufacturing a ballast.

Conventionally, there are various methods of manufacturing ballasts for discharge lamps. For example, a coil 1 wound as shown in FIG.
The coil 1 is covered with an insulating paper 3 having creases 2 for bending according to the dimensions of the coil 1, and after the coating, the overlapped portions of both ends of the insulating paper 3 are supported with adhesive tape 4, and the coil 1 covered with the insulating paper 3 is It is attached to the inner cavity of the laminated E-type core and I-type core and stored in a ballast case.

However, according to the method for manufacturing the ballast described above, it is necessary to support both ends of the insulating paper 3 with the adhesive tape 4, which has the drawback of requiring extra cost and labor.

The present invention was invented in view of the above points, and an object of the present invention is to provide a method for manufacturing a discharge lamp ballast that does not require extra cost and is easy to work with. Hereinafter, a method for manufacturing a ballast for a discharge lamp according to the present invention will be sequentially explained with reference to FIGS. 2 and 3.

(a) First, the wound coil 11 is placed on a single sheet of insulating paper 13 having a plurality of bending lines 12 in accordance with the width of the wound coil 11.
Here, the bending lines 12 are the wound coil 11
The insulating paper 13 is configured to match the vertical width A, the horizontal width B, and the dimensions of the hollow portion C. Further, the insulating paper 13 is configured such that one or both of the bent pieces 14 and 15 at both ends thereof match the vertical width D of the central leg 16 of the E-shaped core.

(b) Next, the hollow part C of the coil 11, in which the bent pieces 14 and 15 at both ends of the insulating paper 13 are wound, is overlapped at the bottom, and the wound coil 11 is covered with the insulating paper 13.

(c) Next, the coil 11 covered with insulating paper 13 is fitted onto the laminated E-type core 17, and the E-type core 1
7 and the gap 19 between the I-shaped core 18 and the insulating paper 13
Press and support both ends of.

(d) After this, the coil 11 attached to the E-shaped core 17 and the I-shaped core 18 is housed and supported in the ballast case.

As described above, the present invention has a plurality of bending lines, and one or both of the bent pieces at both ends are made of a single piece of insulating paper that matches the vertical width of the central leg of the E-shaped core. Then, the wound coil is placed, and the bent pieces at both ends of the insulating paper are overlapped at the bottom of the hollow part of the wound coil, the coil is covered with the insulating paper, and then the laminated E-shaped core and I This manufacturing method involves fitting a coil covered with insulating paper between the cores, and pressing and supporting both ends of the insulating paper with the gap between the E-shaped core and the I-shaped core, so the wound coil is insulated. When covering with paper, the folded pieces at both ends of the insulating paper are overlapped and supported at the bottom of the hollow part of the wound coil. No need to support with tape,
This has the advantage of being easy to manufacture and requiring no extra cost.

In addition, one or both of the bent pieces at both ends of the insulating paper are made to match the vertical width of the center leg of the E-shaped core, so when the coil is covered with insulating paper, the outer diameter is constant, and the coil can be It is easy to insert into the core, and there is no need to pinch insulating paper at the joint between the E-type core and I-type core.

Furthermore, there are various advantages such as the ability to improve insulation performance by bringing the insulating paper into close contact with the outside of the coil.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view showing the relationship between a wound coil and insulating paper in a ballast for explaining a conventional method of manufacturing a ballast for a discharge lamp, and FIGS. 2 and 3 are for a ballast for a discharge lamp according to the present invention. FIG. 2 shows the relationship between the wound coil and the insulating paper, and FIG. 3 shows the relationship between the coil covered with the insulating paper and the E-type iron core and the I-type iron core. The state shown is that it is worn between. 13...Insulating paper, 11...Coil, 17...E type iron core, 18...I type iron core.

Claims (1)

[Claims] 1. A plurality of bending lines 12 are formed in accordance with the width of the wound coil 11, and one or both of the bent pieces 14 and 15 at both ends are connected to the central leg of the E-shaped core 17. 1
The wound coil 11 is placed on an insulating paper 13 configured to match the vertical width D of the insulating paper 13, and then the hollow part D of the coil 11 is placed around which the bent pieces 14 and 15 at both ends of the insulating paper 13 are wound. The coil 11 is covered with insulating paper 13 at the bottom of the stack, and then the coil 11 covered with insulating paper 13 is fitted onto the laminated E-shaped core 17, and the E-shaped core 17 is
Both ends of the insulating paper 13 are pressed and supported by the gap 19 of the I-shaped core 18, and after this, the coil 11 attached to the E-shaped core 17 and the I-shaped core 18 is housed and supported in a ballast case. A method of manufacturing a ballast for electric lights.