JPS61185905A - High frequency coil - Google Patents

Abstract

PURPOSE:To enable to secure stabilized external measurements of the titled coil by a method wherein a pocket to be used for a terminal bending and a rib working is provided, a plate terminal is bent at right angles, and at the same time, a plate-bent terminal whereon an enforcement rib work is performed is provided at the corner part of said plate terminal. CONSTITUTION:A wedge-shaped reinforcement rib 2 is provided in the center part of the corner of an L-type plate terminal 1. By providing a wedge-formed reinforcement rib 2 which is bent at right angles utilizing the pocket for working, said right-angled part is never deformed, said rib 2 is cut into a part of a bobbin 3 and the shifting of the plate terminal 1 in horizontal direction can be prevented, thereby enabling to accomplish the reflow type high frequency coil having high dimensional stability.

Description

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

BACKGROUND OF THE INVENTION In recent years, electronic devices have become increasingly lighter, thinner, shorter and smaller, and the electronic components used in these electronic devices have become more densely packed.Therefore, there is a strong demand for component flow. In the field of high-frequency coils, flow-type components are now being provided in which flat terminals are bent into L- or U-shapes.Hereinafter, with reference to the drawings, we will explain the above-mentioned conventional glue-flow type high-frequency coils. explain.

FIG. 3 shows a perspective view of a conventional glue flow type high frequency coil. In FIG. 3, numeral 9 is an L-type terminal. 1o is a multiple bobbin, and 11 is a coil portion.

The configuration (operation) of the flow-type high-frequency coil configured as described above will be explained below. This L-shaped plate terminal has a structure in which a flat plate terminal is bent at right angles and then embedded or insert molded into a multiple bobbin.
The parts soldered to the board (reflow part) are thin, with a thickness of about 0.2 to 1.55111, and their width is also 0.
．． Because it is narrow, about 3 to 2 mm, even if a slight force is applied in the vertical direction, it easily deforms vertically as shown in Figures 4 and 5.

Figure 4 shows a cross-sectional view of the L-shaped terminal embedded in the multiple bobbin shown in Figure 3, which is bent by θ1 in a positive direction from the horizontal direction due to upward force (stress) applied thereto. . In the figure, 12 indicates a multiple bobbin, and 13 indicates a flat terminal processed into an L shape.

FIG. 6 is a cross-sectional view of the L-shaped flat terminal embedded in the multi-bobbin shown in FIG. 3, which is bent by θ2 in a negative direction from the horizontal direction due to a downward force applied thereto. 1 in the diagram
4 indicates a multiple bobbin, and 7.15 indicates a flat terminal processed into an L shape.

As is clear from FIGS. 4 and 6, it is easy to see that the reflow part is easily bent due to stress in the vertical direction.

Problems to be Solved by the Invention As shown in Figures 4 and 5, when a part of the reflow coil is bent or when the flow type high frequency coil is mounted on an electronic device, each terminal must be placed horizontally (
In practical terms, this had the problem of being forced to make corrections so that it was at a right angle), which was a great waste of time and labor.

In view of the above-mentioned problems, the present invention provides a high-frequency coil in which a part of the reflow coil is always fixed perpendicular to the side surface of the high-frequency coil without bending even under some stress in the vertical direction.

Means for Solving the Problems In order to achieve this object, the high frequency coil of the present invention is provided with a pocket for terminal bending and rib processing in a part of the bobbin, and at the same time the flat terminal is bent at right angles and at the same time at least one It consists of a flat plate bent terminal with reinforcing ribs processed in more than one place.

Function: With this configuration, the reinforcing ribs at the corners bent at right angles overcome the stress applied to the flat terminals, as shown in Figure 4.
As shown in FIG. 5, it is possible to easily realize a reflow type high frequency coil in which the reflow part does not bend vertically.

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

FIG. 1 shows a perspective view of a reflow type high frequency coil in an embodiment of the present invention. In Figure 1, 1 is L
2 is a wedge-shaped reinforcing rib provided at the center of the corner of the L-shaped flat terminal, 3 is a multiple bobbin, and 4 is a coil portion.

Figure 2 shows how to bend the terminals of the bobbin in order to carry out the present invention.
FIG. 3 is a detailed view of the multiple bobbin as seen from the side where ribs are processed.

In the figure, 5 indicates a pocket for bending and rib processing, 6 indicates a reinforcing rib portion, 7 indicates a flat terminal processed into an L shape, and 8 indicates a multiple bobbin.

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

By using the processing pocket shown in Figure 2 and providing wedge-shaped reinforcing ribs at the corners of the flat plate terminal bent at right angles, this right angle part will not be easily deformed, and this rib will become one part of the bobbin. It also prevents the flat terminal from digging into the parts and moving horizontally, making it possible to realize a reflow type high-frequency coil with high dimensional stability.

As described above, the dimensional change in a part of the reflow type high frequency coil beam according to this embodiment is extremely small, eliminating the conventional disadvantages of mounting defects due to dimensional variations and wasting time and labor in advance correction, and making it stable and flow type. A high-frequency coil can be obtained, which has a great effect on improving quality. Furthermore, the protrusions or recesses of the reinforcing rib portion improve the soldering effect 1 - There is also a great effect on improving the soldering strength.

In this embodiment, the shape of the reinforcing ribs is wedge-shaped, but the reinforcing ribs are not limited to the wedge shape, and may be hemispherical, quadrangular, or other reinforcing ribs.

Effects of the Invention As described above, the present invention bends a part of the bobbin and provides a pocket for rib processing, and at the same time as bending the flat plate terminal, provides a reinforcing rib at the corner part, so that the flat terminal can not only be bent vertically but also By biting the reinforcing ribs into the bobbin, it is possible to prevent horizontal fluctuations, and a flow-type high-frequency coil with stable external dimensions can be obtained, which has great practical effects.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a flow-type high-frequency coil in which reinforcing ribs are applied to the corners of a flat terminal according to the present invention. Figure 2 is a perspective view showing the main parts of the same coil, Figure 3 is a perspective view of a conventional glue-flow type high-frequency coil, and Figure 4 is a conventional glue-flow type high-frequency coil with a part bent in the positive direction. FIG. 5 is a cross-sectional view of a conventional glue-flow type high-frequency coil when a part of the glue-flow is bent in the negative direction. 1... L-shaped child plate terminal, 2... Reinforcement rib, 3... Multiple bobbin, 4... Coil, 5...・Pocket for folding processing, 6...
・・Reinforcement rib, 7・・L type child plate terminal, 8・・・・
...Multiple bobbin. Name of agent: Patent attorney Toshio Nakao and 1 other person/-
L-shaped flat terminal 4- Coil!

Claims (1)

[Scope of Claims] A high-frequency coil having a pocket for terminal bending and rib processing in one part of the bobbin, a flat terminal bent at a right angle, and at the same time a flat terminal with reinforcing ribs processed in at least one corner thereof. .