JPH0229718Y2 - - Google Patents

Description

[Detailed Description of the Invention] Technical Field The present invention relates to a ceramic capacitor block that is optimal as a bypass capacitor for the high frequency circuit of a VHF tuner.

Prior Art The bypass capacitor block of a conventional VHF tuner is constructed by mounting a large number of individual cylindrical through-type ceramic capacitors on a printed circuit board, or by mounting a common dielectric It is constructed by providing a large number of capacitors on a ceramic substrate.

By the way, in the case of constructing a block using the former individual cylindrical through-type ceramic capacitors, a through conductor is soldered to the internal electrode of the cylindrical dielectric ceramic, and a flange-shaped external terminal is soldered to the external electrode. It was necessary to prepare a cylindrical through-type ceramic capacitor in advance and attach it to the printed circuit board. Therefore, the assembly process has necessarily become complicated. On the other hand, in the latter case where a large number of feedthrough capacitors are formed on a common ceramic substrate, there is a problem that if one capacitor becomes defective, the entire capacitor block becomes defective and is easily damaged. Furthermore,
When it is necessary to change the number of capacitor elements in a capacitor block, it is necessary to prepare a board corresponding to the number of capacitor elements, which inevitably increases costs.

OBJECT OF THE INVENTION Therefore, an object of the present invention is to provide a through-type ceramic capacitor block that is easy to manufacture and can reduce costs.

Structure of the Invention The present invention to achieve the above object will be described with reference to the reference numerals in the drawings showing the embodiments for ease of understanding. A plurality of through-type ceramic capacitor elements 2 each consisting of an internal electrode 10 provided and an external electrode 11 provided on the outer peripheral surface of the ceramic 9, and a plurality of capacitor elements 2 protruding from both ends of the capacitor element 2. a plurality of through conducting wires 3 respectively inserted into through holes 13 and coupled to the internal electrodes 10 of the plurality of capacitor elements 2; and a strip-shaped metal substrate 1 supporting the plurality of capacitor elements 2 at regular intervals. The band-shaped metal substrate 1 supports each of the plurality of capacitor elements 2 with a plurality of openings 7 provided at regular intervals along its longitudinal direction, and the outer electrode 11 of the capacitor element 2 has elasticity. A protrusion 8 is provided at the edge of the opening 7 to hold the external electrode 11, and the external electrode 11 is electrically and mechanically coupled to the strip metal substrate 1 by the support by the protrusion 8 and solder 14. The present invention also relates to a ceramic capacitor block characterized in that the band-shaped metal substrate 1 is provided with cut grooves 5 and 6 that partition the plurality of capacitor elements 2 from each other.

Effects of invention According to the above invention, the following effects can be obtained.

(a) Since the structure allows the capacitor element 2 to be temporarily fixed to the metal substrate 1 by the elastic protrusion 8 and then connected with the solder 14, it is possible to connect the external electrode connection terminal to the through-type ceramic capacitor element 2. Capacitor element 2 can be mounted on substrate 1 without special provision. Therefore, manufacturing is simplified and costs are reduced.

(b) A large number of capacitor elements 2 are mounted on a band-shaped metal substrate 1, and cut grooves 5, 6 are formed between each element 2.
, so that a block containing any required number of capacitor elements 2 can be easily provided by cutting with the grooves 5 and 6. Therefore, it is possible to reduce costs.

Embodiment Next, a feedthrough ceramic capacitor block for use as a bypass capacitor for a VHF tuner according to an embodiment of the present invention will be described with reference to FIGS. 1 to 6.

The completed capacitor block shown in FIGS. 5 and 6 is an assembly of the strip-shaped metal substrate 1 shown in FIG. 2, the through-type ceramic capacitor element 2 shown in FIG. 3, and the through-hole conductor 3 shown in FIG. be.

As shown in FIG. 1, the band-shaped metal substrate 1 is first provided with notches 4 in the parts where a plurality of capacitor elements are to be mounted, and grooves cut from both sides to partition the parts to which the capacitor elements are to be mounted. 5,
6, and press working simultaneously or continuously with these operations so that the circular opening 7 and protrusion 8 shown in FIG. 2 are formed. Projection part 8
As is clear from FIG. 6, this is a cylindrical portion projecting from the back side of the substrate 1, and in this embodiment, it is formed based on the four projecting pieces surrounding the notch 4 shown in FIG. . The metal substrate 1 is a phosphor bronze plate or a copper plate whose surface is soldered, and the protrusion 8 has elasticity. In addition, before fitting the capacitor element 2,
The protrusion 8 is formed to be tapered and have an inner diameter slightly smaller than the outer diameter.

As is clear from FIG. 3, the ceramic capacitor element 2 includes a cylindrical dielectric ceramic 9, an internal electrode 10 formed on the inner circumferential surface of the cylinder of the ceramic 9, and an external electrode formed on the outer circumferential surface of the ceramic 9. It consists of 11.

The through conductor wires 3 shown in FIG.
It has 2.

When assembling the bypass capacitor block, a capacitor element 2 is fitted into each opening 7 having an elastically deformable tapered projection 8 at the edge.
When the capacitor element 2 is inserted into the opening 7, that is, the tapered protrusion 8, the protrusion 8 is elastically deformed to increase its diameter, elastically holding the external electrode 11 of the capacitor element 2, and reducing the diameter of the capacitor element 2. Temporary fixation is achieved. Next, the through hole 13 of each capacitor element 2
Insert conductor 3 into.

The metal substrate 1 and the capacitor element 2 are assembled as described above.
Once the assembly of the conductive wire 3 and the conductive wire 3 is prepared, it is immersed in molten solder, and as shown in FIG. electrically and mechanically connected.
When using the completed capacitor block in a VHF tuner, cut the metal substrate 1 using the grooves 5 and 6 so that it contains the number of capacitor elements 2 required by the tuner, and attach the metal substrate to the chassis of the tuner. Combine 1.

As is clear from the above, according to this embodiment, the effects of items (a) and (b) above can be obtained. Further, according to this embodiment, the strip-shaped metal substrate 1 for blocking
The coupling of the capacitor element 2 to the capacitor element 2 and the coupling of the through conductive wire 3 can be performed simultaneously. Furthermore, a single through-type ceramic capacitor can be easily obtained.

Although the embodiments of the present invention have been described above, the present invention is not limited thereto and can be further modified. For example, if the through conductor 3 in FIG.
The capacitor element 2 shown in the figure may be soldered in advance and attached to the substrate 1 shown in FIG. Further, the protrusion 8 may be formed into a substantially perfect cylinder. Also,
Through holes may be provided in the substrate 1 at regular intervals for attachment to a chassis or the like. Further, it is also possible to have a configuration in which the flange portion 12 of the through conductor 3 is omitted.

[Brief explanation of the drawing]

1 to 6 show a capacitor block according to an embodiment of the present invention. FIG. 1 is a plan view showing the state of the metal substrate just before completion, and FIG. 2 is a plan view of the completed metal substrate. , Fig. 3 is a sectional view of the capacitor element, Fig. 4 is a front view showing part of the through conductor, Fig. 5 is a plan view showing the capacitor block without soldering, and Fig. 6 is a sectional view of the capacitor block. be. DESCRIPTION OF SYMBOLS 1... Band-shaped metal substrate, 2... Magnetic capacitor element, 3... Penetrating conductor, 5, 6... Cut groove, 7
... Opening, 8 ... Protrusion, 9 ... Cylindrical dielectric ceramic, 10 ... Internal electrode, 11 ... External electrode, 14
……solder.

Claims (1)

[Claims for Utility Model Registration] A plurality of penetrating types consisting of a cylindrical dielectric porcelain 9, an internal electrode 10 provided on the inner peripheral surface of the porcelain 9, and an external electrode 11 provided on the outer peripheral surface of the porcelain 9. a plurality of ceramic capacitor elements 2; and a plurality of ceramic capacitor elements 2, which are respectively inserted into the through holes 13 of the plurality of capacitor elements 2 so as to protrude from both ends of the capacitor element 2, and are respectively coupled to the internal electrodes 10 of the plurality of capacitor elements 2. and a band-shaped metal substrate 1 that supports the plurality of capacitor elements 2 at regular intervals, and the band-shaped metal substrate 1 has a plurality of openings 7 provided at regular intervals along its longitudinal direction. A protrusion 8 that supports each of the plurality of capacitor elements 2 and elastically holds the external electrode 11 of the capacitor element 2 is provided at the edge of the opening 7,
The external electrode 11 is electrically and mechanically coupled to the band-shaped metal substrate 1 through support by the protrusion 8 and solder 14, and the plurality of capacitor elements 2 are connected to each other on the band-shaped metal substrate 1. A porcelain capacitor block characterized in that it is provided with dividing grooves 5 and 6.