JPS61150316A - Lc composite part - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to LC composite parts used in various electronic devices.

BACKGROUND OF THE INVENTION Conventionally, LG composite parts used in various electronic devices include a coaxial bobbin with a plurality of winding grooves formed by a plurality of flanges, and a coil is wound in the winding groove of the coaxial bobbin. ,
An LC composite component is used in which a recess is provided in the flange, a terminal pin is buried in the recess, a chip capacitor is housed in the recess, and the end of the capacitor and coil are connected to the terminal pin. Publication No. 57-2644, Utility Model No. 1983
7-2646) A conventional example is shown in FIG.

It is shown in FIG.

In Fig. 5, 1 is a collar having a recess for storing a chip capacitor, 2 is a coil wound in a winding groove section separated by two collars, and 3 is a chip stored in a recess in the first part of the collar. It is a capacitor, and a portion protrudes from the bobbin collar 1 to facilitate soldering. Reference numeral 4 denotes a terminal, which is vertically buried in the recess of the collar 1 so as to be in contact with the electrode portion of the chip capacitor 3. This terminal 4 has a length that reaches above the upper end of the chip capacitor 3.
The copper wire of the coil end 6 is wired to a portion protruding from the upper end of the coil. FIG. 6 shows a cross section of this collar, showing the concave portion of the collar 1 and the chip capacitor 3. The relationship between the terminals 4 is illustrated.

In this conventional example, the terminal 4 is located above the upper end of the collar 1 of the bobbin. The top of chip capacitor 3.

The coil end wiring part is soldered using solder dip or the like to make an electrical connection and form an LC circuit.

Problems to be Solved by the Invention In line with the demand for smaller and thinner electronic devices, it is desired that LC composite parts be smaller and thinner. Under these circumstances, although efforts have been made to reduce the dimensions of each part of the conventional example, the terminal 4 protrudes upward from the upper end of the chip capacitor 3 in terms of soldering and protrusion from the copper wire of the coil end wiring. It is difficult to reduce the size of this part.

This was one of the drawbacks to miniaturization and thinning.

The present invention solves this drawback and provides a La composite part that can be easily made smaller and thinner.

A foolproof way to solve problems In order to achieve this object, the present invention has the following features.

A terminal to be buried in a recess provided in the flange is tilted outward so that the portion projecting upward from the upper end of the recess is substantially equal to the flange compared to the lower part.

This makes it possible to reduce the size of the coil end wiring section in the height direction while ensuring a constant space (terminal length) for wrapping the copper wire.

Effect With the above structure, the terminal portion of the terminal buried in the recess of the collar that protrudes from the upper end of the recess is inclined outward, but the chip capacitor and the terminal have their electrode portions in the recess as in the conventional example. The solderability of the terminals and chip capacitors will not deteriorate at all. In addition, the terminal part above the upper end of the recess is tilted so that its tip extends outward to the same size as the flange, the length of the terminal protruding from the upper end of the recess is the same as before, and the length of the coil end is exactly the same. The height dimension from the upper end of the recess to the tip of the terminal is compressed.

Example FIG. 1 shows a perspective view of an embodiment of the present invention.

Further, FIG. 2 shows a cross section of the flange.

As shown in FIG. 1, a coil/I/7 is obtained by winding a coaxial bobbin 6 having a plurality of flanges 6a in the winding groove 6b between the flanges 6a, and a recess provided in the flanges 61L. 6c, a terminal 8 is buried with an inclination such that the part protruding upward from the upper end of the recess 6C is expanded to the same size as the flange, and a chip capacitor 9 is housed in the recess 6C, and the chip The coil end wiring portion 10 is tied to the terminal portion protruding upward from the capacitor 9, and the terminal 8. Chip capacitor9. The coil end wiring portion 1o is electrically connected by soldering, and this is housed in a case 11 to constitute an LC composite component.

FIG. 2 shows a sectional view of the flange of the present invention, and as shown, the tip portion of the terminal 8 (this length is 4) protruding from the upper end of the flange e& of the coaxial bobbin 6 is oriented by θ0 with respect to the vertical direction. By giving an inclination to the outside and expanding the tip of the terminal 8 to the same extent as the side surface of the collar 6a, the vertical dimension upward from the upper end of the collar 61L is 1 cOsθ0, which is always smaller than l, and the conventional example. Compared to (1(1-cosθ0)
It is possible to reduce the dimension in the height direction by the same amount.

According to the present invention, the length of the coil end wiring portion 10 is ensured to be the same as that of the conventional example, and the chip capacitor 9 and the terminal 8 are
It is possible to shorten the terminal 8 protruding from the top of the collar 61L in terms of the vertical direction without deteriorating the solderability of the flange 61L.
1. Small size of LC composite parts.

A great effect on thinning can be obtained.

In addition, in FIGS. 1 and 2, the chip capacitor 9 and the terminal 8
The positional relationship is shown in Figure 3.

This may be done as in another embodiment shown in FIG. Further, the cross section of the terminal 8 may be round or square.

Effects of the Invention As described above, the present invention provides a recess in the flange of a bobbin, and embeds in this recess a terminal whose portion that protrudes upward from the upper end of the flange has an outward slope approximately equal to the flange. By doing so, it is possible to provide an LC composite component suitable for downsizing and thinning, which is of great practical value.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing one embodiment of the LC composite part of the present invention, Fig. 2 is a sectional view of the bobbin flange, Fig. 3 is a top view of the bobbin flange, and Fig. 4 is a diagram showing another embodiment of the LC composite component. FIG. 6 is a top view of the bobbin flange, FIG. 6 is a side view showing a conventional example, and FIG. 6 is a sectional view of the bobbin flange of the conventional example. 6... Coaxial bobbin, e) IL... Tsuba,
6t)... Winding groove, 6C... Concavity, 7
......Coil, 8...Terminal. 9... Chip capacitor, 10... Coil end wiring section, 11... Case. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 2 Figure 3 Figure 4

Claims (1)

[Claims] A coaxial bobbin having a plurality of winding grooves formed by a plurality of flanges is provided, a coil is wound in the winding groove of the coaxial bobbin, a recess is provided in the flanges, and a portion protrudes upward from the upper end of the recess. An LC composite component in which a terminal is buried outwardly to an extent that is almost equal to the flange compared to the lower part, a chip capacitor is housed in this recess, and the chip capacitor and coil end wiring part are connected to the terminal. .