JPS59161010A - 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 The present invention relates to LC composite parts such as Tilley lines and LC filters equipped with coils and capacitors. A recess is provided in the flange of the capacitor to accommodate the capacitor, thereby making it possible to use a chip capacitor and improving ease of assembly.

Conventionally, this type of LC composite component has been constructed by winding a coil around a coaxial bobbin, winding a capacitor lead wire around a terminal pin provided upright on the collar of the coaxial bobbin, and connecting it by soldering.

Therefore, fixing the capacitor depends on the strength of the connection of the lead wire to the terminal pin, and the fixing strength is unstable, and it takes a lot of effort to thread the threads.7 Productivity is poor, and it is difficult to use chip capacitors. However, there were disadvantages in that it was difficult to reduce the size of the device.

The present invention eliminates the above-mentioned conventional drawbacks, and creates an LC composite component that can use chip capacitors, can automate its assembly, improve productivity, and can securely fix the capacitor and reduce its size. This is what we are trying to provide.

Embodiments of the present invention will be described below with reference to FIGS. 1 to 6.

First, the embodiment shown in FIGS. 1 and 2 will be described. 1 is a coaxial bobbin in which a plurality of flanges 2 made of synthetic resin are provided at equal intervals and a plurality of winding grooves 3 are formed between the flanges 2. A coil 4 is wound around this winding groove 3. Also, the above tsuba 2
A recess 6 is provided on the upper surface of the recess 6, and terminal pins 6 are implanted at both ends of the four parts 50 so as to protrude upward. A chip capacitor 7 is placed in the recess 5 where the terminal pin 6 is implanted.
This capacitor Y is electrically and mechanically connected to the terminal pin 6 by soldering or the like.

The coaxial bobbin 1 incorporating the coil/I/4 and the capacitor 7 is covered with a case 8 made of metal or the like. The inner surface of this case 89 on both sides is provided with locking protrusions 9,
The locking protrusions 9 of the coaxial bobbin 1 are positioned so that they are in contact with the upper surfaces of the flanges 2 at both ends of the coaxial bobbin 1, and the terminal pins 6 do not come into contact with the ceiling surface of the case 8. The coaxial bobbin 1 and the case 8 are coupled by fitting the horizontal grooves 10Vc and the inward engaging protrusions 11 provided on the front and back surfaces of the case 8.

Note that the lead wire of the coil 4 is wound around the required terminal pin 6 and soldered.

In addition, the depth of the recess 5 is set to be the same as the height of the capacitor 7 in FIG. 2, but as shown in FIG. It is also possible to improve the soldering properties and to configure the coaxial bobbin 1 to not be thermally deformed during soldering.

Furthermore, as shown in FIGS. 3 and 4, several ribs 12 are provided in the recess 5 to position and hold the capacitor 7, and the ribs 12 press-fit and hold the capacitor 7. 0 between pin 6 and capacitor 7,
It is also possible to provide a small gap G of 2 yrni or less so that soldering can be performed sufficiently deep inside.

In addition, the rib 12& on the terminal pin side is formed larger than the rib 12b on the capacitor side as the rib 12, and the tip protrudes from the terminal pin 6 toward the capacitor 7, so that the capacitor 7 does not directly hit the terminal pin 6. 7 can be held with elasticity, and dimensional variations in the capacitor 7 can be sufficiently absorbed.

Furthermore, as shown in FIGS.
The capacitor 7 may be press-fitted in between, or the terminal pin 6 may be implanted so that a portion thereof is exposed on the end surface of the recess 5, as shown in FIG.

Since the LC composite component of the present invention is configured as described above,
Chip capacitors can be used, and since they are stored in the four parts of the collar of the coaxial bobbin, they can be made smaller, and since they can be soldered directly to the terminal pins, the capacitors can be fixed stably and firmly, improving quality. It is now possible to automate the assembly with just mJ, which greatly improves productivity.By providing ribs in the recess, the capacitor can be held more firmly, and the variation in capacitor dimensions can be reduced. Absorption is also possible, which is of great practical value.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway perspective view showing one embodiment of the LC composite component of the present invention, Fig. 2 is an enlarged sectional view of the same main part, and Fig. 3 is an enlarged sectional view of the main part of another embodiment ζ Figure 4 is a top view of the main part;
FIGS. 6 and 6 are top views of main parts of still another embodiment. 1... Coaxial bobbin, 2... Tsuba, 3... River/winding groove, 4... Coil, 5... Concavity, 6...
Old: terminal pin, 7: capacitor, 8: mountain case, 9: old: locking protrusion, 10: groove, 11
...mark/engaging protrusion, 12...rib.

Claims (3)

[Claims] (1) A coaxial bobbin with a plurality of winding grooves formed by a plurality of flanges is provided, a coil/coil is wound in the winding groove of the coaxial bobbin, a recess is provided in the brim, and a terminal pin is attached to the four parts. An LC composite component that is installed, houses a capacitor, and connects this capacitor to a terminal pin. (2) Using a chip capacitor as a capacitor,
The LC composite component according to claim 1, wherein a portion of the capacitor protrudes from the recess. (3) Claim 1 in which a lip for elastically holding the capacitor is provided in the recess for accommodating the capacitor.
LC composite parts described in section.