JPS6325706Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a self-supporting inductor that has a simple structure and is made by butting together a pair of inductors in which a spiral striped metal film is provided on a resin sheet in which a protrusion is formed in a planar direction. The purpose is to provide a self-supporting inductor that is easy to manufacture.

An embodiment of the present invention will be explained in detail below with reference to the drawings.

FIG. 1 is a front view of the self-supporting inductor, and FIG. 2 is a longitudinal sectional view taken along line A-A' in FIG. In these figures, numerals 1 and 2 each represent a single inductor, both of which are formed with the same configuration as shown in FIGS. 3 and 4. That is, FIG. 3 is a plan view of a single inductor at the stage where a metal film is provided, and FIG. 4 is a vertical cross-sectional view of a completed single inductor, which is made of polyimide, Teflon, etc. with protrusions 3 formed in the plane direction. , a spiral linear metal film 5 forming a coil is provided on a resin sheet 4 having flexibility and heat resistance such as BT resin, and a metal film 6 forming a first electrode continuously at the center thereof. Further, a metal film 7 that is continuous with the end of the linear metal film 5 and forms a second electrode on the protrusion 3 is provided so as to cover the entire surface of the metal film 6 and the end of the metal film 7. Solder layers 8 and 9 are provided thereon, and these are entirely covered with a heat-meltable insulating film 10 made of urethane resin or the like. Such a single inductor is formed by forming a plurality of metal films with the same pattern on a resin sheet of a predetermined size, and then punching the sheet into a predetermined shape. Also,
These metal films are provided with an appropriate metal such as copper by an appropriate method such as an etching method, a vapor deposition method, a sputtering method, or the like. In the self-standing inductor of the present invention, as shown in FIGS. 1 and 2, a pair of independent inductors having such a configuration are arranged so that the protruding parts 3 of the sheet 4 are on the same side, and The metal films 7 forming the provided second electrodes are placed in positions where they do not overlap each other, and the sheet surfaces on which the metal films are provided are brought into contact with each other so as to face each other. The solder layer 8 is melted by heating and pressurizing the portion corresponding to the position of the metal film 6 forming the first electrode, thereby electrically connecting the metal films 6 to each other and fixing the pair of inductors 1 and 2. It is.
In this case, a coating such as urethane resin is present on the metal film 6, but since this coating is heat-fusible, it is removed by heat pressurization.
There is no obstacle to connection between them.

The self-standing inductor of the present invention thus formed has a pair of protrusions 3, which are inserted into the through holes of the printed circuit board and then soldered to a predetermined wiring pattern. It is attached and used.

Although the self-supporting inductor of the present invention is constructed as described above, it goes without saying that it is not limited to the structure of the above embodiment. For example, the solder layer 9 on the metal film 7 forming the second electrode is not necessarily essential, and the insulating film 10 covering the metal film may not be made of heat-melting material such as urethane resin. For example, epoxy resin may be used. In these cases,
Needless to say, the metal films 6 and 7 forming the first and second electrodes are not coated with an insulating film. Further, the outer shape of the resin sheet 4 and the pattern of the linear metal film 5 are not limited to the square shape shown in the drawings, but may also be arbitrarily set to other shapes such as a circular shape. Furthermore, after a pair of individual inductors are butted against each other and fixed, the entire inductor except for the protruding portion attached to the printed circuit board may be covered with an exterior material. It is also possible to provide a hole in the center of the inductor and insert the core through the hole.

Since the self-supporting inductor of the present invention is constructed as described above, it has an excellent effect of being simple in construction and easy to manufacture.

[Brief explanation of the drawing]

FIG. 1 is a front view of a self-supporting inductor according to an embodiment of the present invention, FIG. 2 is a longitudinal cross-sectional view thereof, and FIG. 3 is a view showing a single inductor with a metal film for configuring the self-supporting inductor of the present invention. front view at the stage of
FIG. 4 is a longitudinal sectional view of a completed single inductor. 1, 2...Inductor, 3...Protrusion, 4...
Resin sheet, 5, 6, 7... Metal film, 8, 9...
Solder layer, 10...Insulating coating.

Claims (1)

[Scope of utility model claims] A flexible resin sheet with protrusions formed in the plane direction, a spiral metal film forming a coil provided on the surface of the sheet, and a metal film continuously connected to the center of the metal film. a metal film forming a first electrode provided thereon; a metal film forming a second electrode continuous to an end of the filamentous metal film and provided on a protrusion of the resin sheet; a solder layer provided on the metal film forming the first electrode;
and an insulating coating provided to cover at least the spiral wire metal film, forming a pair of inductors in which the spiral wire metal film is wound in the same direction. The metal films are brought into contact with each other so that they do not overlap, and the sheet surfaces on which the metal films are provided face each other, and the metal films forming the first electrode are bonded together with the solder provided thereon. A laminated inductor characterized by being fixed rather than connected by layers.