JPS6252909A - High-frequency coil - Google Patents

Abstract

PURPOSE:To prevent disconnection trouble and to improve accuracy of the position of 90 deg. bending by providing a position for the process of bending at a part of an out going lead wire which is to be electrically connected to the end of a coil. CONSTITUTION:A high frequency coil 4 with a lead wire is provided with a position 6 for the process of bending which is smaller than the diameter of the lead wire 7 or is thinner than the thickness of the lead wire 7 at part of the lead wire 7 for externally taking out. This construction enables to fix a bent position when the lead wire 7 for externally taking out of the high frequency coil with a lead wire is bent 90 deg. and the stress is absorbed by the position 6 for the process of bending. This can prevent a disconnection trouble without stress to be applied to the connection 5 between the end of the coil and the lead wire 7 for externally taking out. The accuracy of the dimensions of the position of 90 deg. bending of the lead wire 7 for externally taking out is also improved.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to high frequency coils used in various electronic devices.

Conventional technology In recent years, electronic devices have become more and more lightweight, thin, and small.
There is a strong demand for higher quality. In the field of electronic components, even smaller high-frequency coils with IJ-cords have been provided.

Hereinafter, the above-described conventional leaded high frequency coil will be described with reference to the drawings.

FIG. 4 shows a cross-sectional view of a conventional high frequency coil with leads. In the figure, 12 indicates a coil protective coating part. Reference numeral 13 denotes a fixing portion for pulling out the drum core to the outside and fixing the lead. 14 is a drum core, 16 is a coil part, 16
indicates a connection part where the end of the coil winding and the external lead are electrically connected by soldering, welding, etc. 17 is an external drawer lead.

The operation of the high-frequency coil with leads configured as described above will be described below.

First, when the conventional high-frequency coil with leads shown in FIG. 4 is used in an electronic device, it is necessary to bend the external drawer 17 by 90 degrees as shown in FIG. 4 so that it can be inserted into a printed circuit board. In the conventional high-frequency coil with leads shown in FIG. 4, the connection part 16 (soldering, welding, etc.) between the end of the coil and the external lead-out door 17 is covered with a coating part 12 for protecting the coil. A large stress is applied to the end of the coil during processing or when inserting a printed circuit board into an electronic device, and accidents such as disconnection of high-frequency coils frequently occur.

Problems to be Solved by the Invention However, in order to prevent this disconnection accident with the above configuration, it is necessary to remove stress from the bending part of the external lead 17 from the connection part 16 between the coil end and the external lead 17. It is necessary to keep a distance to the extent that the information cannot be transmitted, and this poses a problem in that it cannot satisfy the recent demands for lighter, thinner, smaller, cheaper, and higher performance.

In view of the above-mentioned drawbacks, the present invention provides a high-frequency coil with leads that is inexpensive and free from breakage accidents without increasing the shape or cost.

Means for Solving the Problems In order to achieve this object, the high-frequency coil with leads of the present invention has a folded part processed to be thinner than the thickness of the external lead, or thinner than the thickness of the external lead. The structure includes a bending processing section.

Effect: With this configuration, the bending part is fixed, stress during the bending process is not applied to the connection between the coil end and the external lead, preventing disconnection accidents, and at the same time, the bending dimensional accuracy is maintained at a constant level. can do.

EXAMPLES Hereinafter, examples of the present invention will be described with reference to the drawings.

FIG. 1 is a sectional view of a high frequency coil with leads in an embodiment of the present invention. In Figure 1, 1 is a coil protective coating part, 2 is a fixing part for the core and external lead, 3 is a drum core, 4 is a coil part, and 6 is a part for soldering or welding the coil end and external lead. Yosi,
Shows the connected connections. Reference numeral 6 denotes a bending part in which a part of the external lead is processed to be thinner than the thickness of the lead or thinner than the thickness of the lead. 7 is an external drawer lead.

FIG. 2 is a detailed sectional view of the bending processing part of the present invention. In the figure, 7 is an external drawer lead, and 6 is an external drawer lead 7 which is folded by hammering, tensioning, pressure processing, rotary pressure processing, etc. It shows a bending part that absorbs bending stress.

FIG. 3 is a detailed cross-sectional view of a bending portion obtained by hammering the external lead of the present invention using a model jig. In the figure, 7 is an external drawer lead, and 6 is a bending part.

The operation of the high frequency coil with leads constructed as above will be described below.

The high-frequency coil with lead shown in FIG.
Processing part 6 for bending stress when performing 0° bending process
Since stress is absorbed by the connecting portion 5 between the coil end and the external lead 7, it is possible to prevent a disconnection accident and improve the dimensional accuracy of the 90' bending position at the end of the external lead 7. is obvious.

Effects of the Invention As described above, the present invention provides a bending part which is processed to be thinner than the thickness of the lead or is processed to be thinner than the thickness of the lead on a part of the external lead that is electrically connected to the end of the coil. This prevents disconnection accidents without adding stress to the connection between the coil end and the external lead, and improves the accuracy of the 90° bending position, which is extremely advantageous in terms of improving the quality of high-frequency coils with leads. It has great practical value.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view showing an embodiment of the high-frequency coil of the present invention, FIG. 2 is a detailed cross-sectional view of the bending part of the external lead of the present invention, and FIG. 3 is a cross-sectional view of the external lead of the present invention. Detailed cross-sectional view of the bending part processed using a model jig,
FIG. 4 is a sectional view of a conventional high frequency coil with leads. 1... Coating section for coil protection, 2...
...Fixing part of core and external drawer lead, 3...
...Drum core, 4...Coil part, 5...
... Connection part, 6... Processing part for bending, finished...
...External drawer lead.

Claims (1)

[Claims] A part of the external lead that is electrically connected to the coil wound around the core is provided with at least one bending part that is thinner than the thickness of the external lead or is thinner than the thickness of the external lead. high frequency coil.