JPH0622966Y2 - Composite coil - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a structure of a composite coil having a plurality of high frequency coils as one block such as an LC filter used in a television or a VTR, and provides a simple and strong coil block. Is.

Conventionally, when a plurality of high-frequency coils are appropriately combined to form one composite coil block, the metal shield cases of the individual high-frequency coils are aligned and brazed or spot-welded to each other in the final step. The method of storing each coil body in its case is used,
In this case, align the metal shield cases so that their top, bottom, left, and right positions are aligned, and
Since the parts are spot-welded or brazed from the inside of the case, the process is troublesome, and there are drawbacks such as misalignment during the work and peeling after the composite coil is completed.

The present invention was devised to prevent this, and will be described with reference to the drawings. FIG. 1 is an elevational view showing an embodiment of the composite coil of the present invention, FIG. 2 is an elevational view of a high-frequency coil as a single unit, and FIG. 3 is a cross-sectional view of the whole case taken along the line AB. FIG. 4 is a sectional view of a part thereof. In the figure, 1 is a metallic shield case of a high-frequency coil alone, and 2 is a window portion provided on the side surface thereof. Reference numeral 3 denotes an overall case in which a plurality of these high-frequency coils are assembled, which is made of synthetic resin, and has a circular protrusion 4 fitted on the window portion 2 of the shield case 1 on its inner side wall. Of course, the window 2 may be a circular recess. Since the present invention has such a structure, each high-frequency coil may be inserted and combined in the overall case in the final manufacturing process, and the ceiling of the shield case 1 and the overall case 3 and the side window part 2 thereof.
And the circular protrusion 4 are fitted together, the fitting can be performed without any problem even if there is an error in each dimension, and the fitting does not come off, and the height of the composite coil is a single high-frequency coil. The height is substantially the same as that of the present invention, and a stable block-shaped composite coil can be obtained, so that the practical effect of the present invention is great.

[Brief description of drawings]

FIG. 1 is an elevational view showing an embodiment of the composite coil of the present invention. FIG. 2 is an elevational view of a high-frequency coil as a single unit, and FIG. 3 is a transverse sectional view taken along line AB of the whole case. 4 is a sectional view of a part thereof, and FIG. 5 is a sectional side view of the entire case. 1 ... Shield case, 2 ... Window part 3 ... Overall case, 4 ... Projection part

Claims (1)

[Scope of utility model registration request] 1. A composite coil in which a plurality of high-frequency coils are combined to form a single coil block, and a recess or window is provided on the case side surface of each single high-frequency coil, and the recess is formed on the inner side surface of the entire case for storing them in combination. Is a composite coil characterized in that it is provided with a projection that fits into the recess or the window, and the high frequency coils are combined and held in one body by fitting them.