JPH1074642A - Leakage transformer for discharge lamp - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate winding formation by integrally forming a path core and a rectangular annular side leg. SOLUTION: The leakage transformer for discharge lamp comprises a layered iron core structure including a central leg 11, a rectangular annular side leg 12 and a path core 13, and further comprises a primary winding and a secondary winding rolled around the central leg 11. The path core 13 is provided between the primary winding and the secondary winding. The path core 13 and the rectangular annular side leg 12 are integrally formed. Since the central leg 11 is substantially I-shaped without the path core 13, the primary winding and the secondary winding are integrated (in a state where wiring between the primary winding and the secondary winding has been also completed) in advance, and the windings are attached to the central leg 11 at once. Thus, the attachment of the primary winding and the secondary winding is efficiently performed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a discharge lamp leakage transformer having a pass core. In particular, it relates to the laminated core structure.

[0002]

2. Description of the Related Art The laminated core structure of a leakage transformer for a discharge lamp is E
In many cases, there is a configuration in which the iron cores of shape I, E, and E are combined, and a configuration in which a center leg, a rectangular annular side leg, and a path core are combined. FIG. 7 shows a conventional example in the latter case. In FIG. 7, 11 is a central leg, 12 is a square annular side leg, and 13 is a pass core. A cross-shaped iron core (12, 13) in which the quadrangular annular side legs 12 and the pass core 13 are integrated, and all of them have a cross shape

[0003]

As shown in FIG. 8, when applying the primary winding 21 and the secondary winding 22 of the central leg 11 of the integrated cruciform iron core (12, 13), they are attached to the central leg. 11
Since it is necessary to mount from both sides, the winding work is performed individually.
2 must be connected. SUMMARY OF THE INVENTION It is an object of the present invention to provide a leakage lamp transformer for a discharge lamp, which does not require primary and secondary windings to be mounted from both sides of a center leg, and which can be easily formed.

[0004]

According to the present invention, there is provided a laminated iron core structure including a center leg, square annular side legs, and a path core, comprising a primary winding and a secondary winding wound around the center leg. It is assumed that a leakage transformer for a discharge lamp in which the pass core is disposed between a primary winding and a secondary winding. In the present invention, the pass core and the quadrangular annular side legs are integrally formed.

[0005]

Since the center leg of the present invention does not have a pass core, the primary and secondary windings for which all connection work has been completed can be mounted from one side of the center leg.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. The leakage transformer for a discharge lamp in FIGS. 1 and 2 includes a laminated core structure including a central leg 11, square annular side legs 12, and a path core 13. Primary winding 2 wound around central leg 11
1. A secondary winding 22 is provided. Primary winding 21 / Secondary winding 2
2, a pass core 13 is arranged. The pass core 13 and the quadrangular annular side leg 12 are integrally formed. Since the center leg 11 is substantially I-shaped without the pass core 13, as shown in FIG. 2, the primary winding 21 and the secondary winding 22 are integrated beforehand (between the primary winding 21 and the secondary winding 22). Can be attached to the central leg 11 in a lump. This is the same as a general-purpose efficient winding work on a general I-shaped core. Another embodiment shown in FIGS. The center leg 11 is designed in a shape reminiscent of a T-shape, and a protrusion 14 is formed at one end thereof. If, for example, one end of the primary side flange portion 31 of the winding bobbin is brought into contact with the projection 14, the positioning of the winding bobbin integrally formed with the primary side flange portion 31 and the secondary side flange portion 32 becomes accurate. . Along with this, the primary side flange 3
1. The positioning accuracy of the primary winding 21 and the secondary winding 22 applied to the secondary flange 32 is improved. Another embodiment shown in FIGS. For example, the width of the central leg 11 corresponding to, for example, the secondary winding 22 is narrowed, and the step 15 is formed at the width change point. This step 15 is connected to the secondary side flange 3
2 is engaged with the corresponding step formed in step 2 to position the winding bobbin in which the primary flange portion 31 and the secondary flange portion 32 are integrally formed. Even in this case, the effects are almost the same as those in FIGS.

[0007]

According to the present invention, the pass core and the quadrangular annular side legs are integrally formed. Therefore, no pass core is attached to the center leg, and there are no obstacles in winding installation.
The secondary winding can be efficiently mounted.

[Brief description of the drawings]

FIG. 1 is a plan view of a laminated core structure of a leakage transformer for a discharge lamp of the present invention.

FIG. 2 is a plan view showing how a winding is attached to a central leg in FIG. 1;

FIG. 3 is a plan view showing a laminated core structure according to another embodiment.

FIG. 4 is a cross-sectional view showing a center leg and each winding of FIG. 3;

FIG. 5 is a plan view showing a laminated core structure according to another embodiment.

FIG. 6 is a sectional view showing a center leg and each winding of FIG. 5;

FIG. 7 is a plan view of a laminated core structure of a conventional leakage lamp leakage transformer.

FIG. 8 is a plan view showing a state in which a winding is attached to the center leg of FIG. 7;

[Explanation of symbols]

 11: Central leg 12: Square annular side leg 13: Pass core 21: Primary winding 22: Secondary winding

Claims (1)

[Claims] 1. A laminated core structure including a center leg, a rectangular annular side leg, and a path core, a primary winding and a secondary winding wound around the central leg, wherein the primary winding and the secondary winding are provided. A leakage transformer for a discharge lamp, wherein the pass core and the rectangular annular side leg are formed integrally with each other, wherein the pass core is disposed between wires.