JPS5852674Y2 - Inner terminal for through-type dielectric - Google Patents

Description

[Detailed description of the invention] This invention relates to improvements to the inner surface terminals of feedthrough dielectrics, especially feedthrough ceramic capacitors, used for noise prevention in radios, stereos, motors, etc., and bypass circuits of FM tuners, etc. .

Conventional internal terminals for through-type porcelain capacitors have an approximately T-shaped horizontal plate cut out from a thin metal plate, with a roughly circular hole in the center of the horizontal plate, and a roughly circular hole at both ends of the horizontal plate. A notch was provided in each, and the notch was bent symmetrically at the center so as to face each other to form a gutter shape, and this was used in a through-type porcelain capacitor and the like.

A lead wire can be attached in a coil shape to the recess formed by the facing notch in the head of the inner terminal and the hollow circular hole, or the lead wire can be attached by passing through the hole, or the lead wire can be attached to the gutter-shaped inner surface of the inner terminal. I was pinching the lead wire and caulking it.

In order to make the inner terminal with the hole, a hole that is relatively large compared to the size of the horizontal plate of the cylindrical metal plate is made in the center, and in the case of an ultra-small through-type ceramic capacitor. In particular, burrs and cracks are likely to form around the hole, which may damage the lead wire or reduce its own mechanical coal supply, making it more likely to break.

Furthermore, when performing preliminary soldering, the solder tends to fill the holes, which may increase the working time to correct them.

The purpose of this invention is to solve the above-mentioned conventional problems, and to provide an inner surface terminal for a through-type dielectric material, which allows easy attachment of lead wires, has high mechanical strength, and does not deteriorate pre-soldering. That's true.

This invention will be described with reference to the accompanying drawings. Notches 1a and 1a are provided at both ends of the horizontal plate 6 of the T-shaped metal plate 5, respectively, and a substantially U-shaped cutout is provided at the center of the top of the T-shaped metal plate 5. A notch 1b is provided to form two prongs 5a, 5a, and the horizontal plate 6 and leg portion 7 are bent into a U-shape to form a gutter-like terminal in which the two prongs 5a, 5a face each other, and This is an inner surface terminal for a through-type dielectric, particularly a ceramic capacitor, which is fitted into the inner hole of a cylindrical dielectric 3.

2a is an outer thin film terminal of the cylindrical dielectric 3, and 2b
is its inner thin film terminal.

Reference numeral 2 denotes a collar-shaped external terminal, which is used to attach the cylindrical dielectric 3 to the metal wall 8.

Further, 1C is the inner bottom surface of the gutter-like portion of the inner surface terminal 1.

FIG. 8 shows another embodiment of the present invention, which shows a through-type dielectric inner terminal mainly made of insulation.

FIG. 9 shows sinusoidal and horizontal figure-of-eight leads.

FIG. 7 shows a conventional example of the T-shaped metal plate, and numeral 4 indicates the hole.

The parts with the same drawing numbers in FIGS. 1 to 9, their names and functions are also the same.

The present invention is as described above, and the lead wire is connected to the inner terminal 1 at 2.
The prongs 6a, 6a may be inserted perpendicularly to the inner surface terminal 1 and soldered, or the two prongs 5a, 5 of the inner surface terminal 1 may be
For example, lead wires are attached in a sinusoidal or horizontal figure-eight shape as shown in FIG. 9 through the notches 1a, 1a, and notch 1b, and soldered.

Furthermore, a lead wire may be attached in a coil shape to each of the three prongs 5a and 5a and soldered.

Further, the lead wire is inserted into the bottom surface 1C of the inner terminal, and is inserted between the two prongs 5a and 5a and caulked.

This invention has two notches at both ends of the horizontal plate of the T-shaped metal plate.
a, 1a and a notch 1b in the center of the top, three prongs 5 a
, 5a is formed and bent to form a gutter-shaped inner surface terminal, just place the lead wire inside the notch 1b.
Not only can the lead wires be soldered reliably, but also the lead wires can be wrapped around the two prongs 5a in a sinusoidal shape 9 or a horizontal figure 8 shape 10 as shown in FIG. Lead wires can be quickly and firmly attached without damaging the lead wire or increasing the number of work steps.

In addition, the three-pronged prongs 5a and 6a allow for good pre-soldering, making it possible to perform not only the above-mentioned method but also caulking easily and reliably.

In addition, there is no risk of a decrease in mechanical strength or an increase in working time compared to the conventional method of drilling holes 4, and it is possible to obtain an inner surface terminal for a through-type dielectric material, particularly a ceramic container, with improved reliability.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view of an embodiment of the present invention, FIG. 2 is a partially enlarged sectional view of FIG. 1, FIG. 3 is a side view of the same, FIG. 4 is a front view of the same, and FIG. A sectional view taken along the line ■-■ in Figure 3, Figure 6 is a T-shaped metal plate, Figure 7 is a conventional T-shaped metal plate, and Figure 8 is a longitudinal cross-section of another embodiment of the present invention. Figure, No. 9
The figure is a perspective view of a sinusoidal waveform and a horizontal figure-eight lead wire. 1...Inner terminal, 1a...Notch, 1
b... cut, 3... cylindrical dielectric,
5...metal plate, 5a, 5a...two prongs,
9...Sine wave lead wire, 10...Horizontal figure 8 lead wire.

Claims (1)

[Claims for Utility Model Registration] ■ Notches l at both ends of the horizontal plate 6 of the metal plate 5 in the shape of a cylindrical shape.
A and la are provided respectively, and a substantially U-shaped cut 1b is provided at the center of the top of the horizontal plate 6 to form two prongs 5a and 5.
a, and a leg portion 7 is provided continuously to the horizontal plate 6, and the horizontal plate 6 and the leg portion 7 are bent into a U-shape to form the trident 5a.
, 5a form a gutter-shaped terminal facing each other, and are fitted into an inner hole of a cylindrical dielectric 3. 2. The inner surface terminal for a through-type dielectric according to claim 1, wherein the cylindrical dielectric 3 has a thin film terminal 2a on its outer surface and a thin film terminal 2b on its inner surface.