JPS60187004A - Laminated printed coil - Google Patents

Abstract

PURPOSE:To improve a space factor while increasing mechanical strength by conforming the center lines of conductor sections in one coil patterns to center lines among conductor sections in adjacent coil patterns when two kinds of single phase printed coils, the coil pattern sections thereof are brought to the relationship of bilateral mirror images, are laminated alternately. CONSTITUTION:When insulating substrates 6a and 6b to which single phase coil patterns 7a and 7b are each formed are superposed alternately and a laminated printed coil is manufactured, volute coil patterns 7a and 7b, at central sections thereof through-holes 8a and 8b are bored severally, are brought to the relationship of bilateral mirror images, and the substrates are printed. When these substrates are superposed, these substrates are printed simultaneously according to the patterns so that the center lines 9 of conductor sections forming one windings and center lines 10 in clearances among conductor sections shaping the other windings coincide. Consequently, the conductor sections having strong mechanical strength reinforce the clearance sections having comparatively weak strength, and thin substrates can also be used.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a laminated cylinder coil that can be used for winding various coils, transformers, motors, and the like.

(Conventional structure and its problems) In recent years, the introduction of printed coils has been considered in order to streamline, homogenize, and thin the manufacturing method of windings used in various coils, transformers, motors, etc. In particular, in transformers, motor windings, and the like that require large magnetomotive force, it is essential to increase the number of turns by laminating them.

Hereinafter, a conventional laminated Norint coil will be described with reference to the drawings.

Figures 1 (4) and (B) show two types of single-layer printed coils whose coil patterns are mirror images of each other, which constitute a conventional laminated printed coil.
b is a substrate having insulating properties; 2a;

2b is a conductor portion forming a printed coil; 3a;

Reference numeral 3b represents a through-hole conductive portion for electrically connecting adjacent single-layer printed coils to each other when the single-layer printed coils are multilayered.

When the two types of single-layer lint coils shown in Fig. 1 (4) and (B) are multilayered, generally the through-hole conductive part near the center of the tti alignment is: 3 a , : 3
b electrically connected.

Figures 2 (A) and (B) are similar to Figure 1 (A) and (B).
) shows the XX cross section and the YY cross section of FIG. 1(4) when two types of single-layer printed coils shown in FIG. 4 in FIG. 2(B) indicates a conductor filled in the through-hole portion.

Conventional multilayer printed coils are generally shown in Figure 2 (4).
As shown in (B), the conductor parts forming the winding part are usually multilayered so that they are completely overlapped and their center lines coincide, but in this case, within a certain volume, In order to pack in as many conductor parts as possible, that is, to improve the space factor, it is necessary to make the thickness of the insulating substrates 1a*1b as thin as possible. However, if the insulating substrate is made thinner, the mechanical strength of the overlapping conductor parts and the gap between the conductor parts will be significantly different, and as a result, the mechanical strength of the laminated coil as a whole will decrease. There was a problem with the drop.

(Objective of the Invention) An object of the present invention is to provide a laminated printed coil that uses an insulating substrate as thin as possible in order to improve the space factor and has high mechanical strength.

(Structure of the Invention) The laminated printed coil of the present invention provides a conductor that forms one coil pattern when two types of single-layer printed coils, each of which has a left and right mirror image relationship, are laminated to form a multilayer structure. The conductor parts are laminated so that the center line of the part coincides with the center line of the gap between the conductor parts forming the other coil or turn of the adjacent single-layer printed coil, and Even if the insulating substrate is made thinner, a laminated printed coil with strong mechanical strength and a high space factor can be obtained.

(Explanation of Examples) Examples will be described below with reference to the drawings.

3(A) and 3(B) show an embodiment of the present invention, in which 6a and 6b are insulating substrates, 7at and 7b are conductor portions whose coil/gut turn portions are left and right mirror images of each other, and 8.
a and 8b are through-hole portions. Figure 3 (4), (B
) are similar to those shown in Figure 1 (A) and (B), but the details are shown in Figure 4 when these two types of single-phase printed coils are superimposed. As shown, the centerline 9 of the conductor forming one winding is aligned with the centerline 10 of the gap between the conductor forming the other winding. The difference is that there are In addition, Fig. 4 is the same as Fig. 3 (4), (B).
3A shows a z-2 cross section of FIG. 3A when two types of single-layer printed coils shown in FIG.

In this embodiment configured as described above, the conductor portion with strong mechanical strength reinforces the conductor gap portion with relatively weak mechanical strength between each layer, so that the mechanical strength of the laminated printed coil as a whole is improved. This increases the strength of the objective.

(Effects of the Invention) As described in detail above, the present invention provides a method for forming conductor parts forming the winding part of one printed coil in upper and lower adjacent layers when stacking single-layer printed coils to form a multilayer structure. The mechanical strength of the laminated printed coil is improved due to its simple structure because the laminated coils are laminated so that the center line of the coil coincides with the center line of the gap between the conductor parts forming the other winding part. This also has the effect of making the insulating substrate thinner and improving the space factor of the coil.

In addition, in the above embodiment, a structure was described in which the space between the conductor parts forming the winding part is not filled with anything, but there is no problem in filling this part with an insulating material as appropriate. Needless to say.

[Brief explanation of the drawing]

Figures 1 (A) and (B) are diagrams showing two types of single-layer printed coils whose coil patterns are mirror images of each other, which constitute a conventional laminated printed coil, and Figure 2 (
4), (B) are the two types of single-layer printed coils shown in Figure 1 (4) and (B) that are stacked on top of each other.
XX cross-sectional view and Y-Y cross-sectional view of FIG. 3 (4). (B) is a diagram showing two types of single-layer printed coils according to an embodiment of the present invention, and FIG. 4 is a diagram showing two types of single-layer printed coils shown in FIGS. 3rd case
It is a z-2 sectional view of FIG. (4). 6a, 6b...Insulating substrate, 7a+7b...Conductor part whose coil pattern parts are left and right mirror images of each other, 8a
*8 b... Through-hole conduction part, 9... Center line of conductor part, lO... Center line of gap part. Figure 1 Figure 2

Claims (1)

[Claims] In a multilayer printed coil that is made by alternately stacking two types of single-layer printed coils whose coil pattern portions are left and right mirror images, the center line of the conductor portion forming one coil pattern is aligned with that of the adjacent single-phase printed coil. A laminated printed coil characterized in that the laminated printed coil is laminated so that the center line of the gap between the conductor parts forming the other coil pattern coincides with the center line of the gap between the conductor parts.