JPH0310663Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a chip-type electrolytic capacitor that can be used both vertically and horizontally.

[Conventional technology]

The applicant of this application is the utility model registration application no.
No. 70089 (Chip-type electrolytic capacitor) proposed a chip-type electrolytic capacitor that uses an external case. As shown in FIGS. 4 and 5, this type of chip-type electrolytic capacitor 1 has a capacitor element 2 assembled together with a rubber sealing member 3 in a bottomed case 4 with one side open. An electrolytic capacitor 7 is assembled into a bottomed exterior case 8 made of a resin material with an opening on one side by rolling the external lead-out portions of the lead wires 5 and 6 through the rubber sealing body 3 to form flat parts 51 and 61. , the opening is filled with a filler 9 and then hardened to form a flat part 5 that becomes an external terminal.
1 and 61 are arranged along the outer case 8.

[Problems that this invention attempts to solve]

In such a conventional example, as shown in FIG.
0A, 10B and flat portions 51, 61 of lead wires 5, 6, which are external terminals, were soldered 10C.
In other words, the chip type electrolytic capacitor 1 was used as a horizontal type.

However, these days, it is expected that the packaging density of electronic components will be improved, and as shown in FIG. 7, the chip electrolytic capacitor 1 is sometimes made to stand on its own and soldered 10C to be used as a vertical type capacitor. In such a case, there is a drawback that not only is stability during mounting poor, but also a large soldering area cannot be secured, which often results in solder defects.

[Means for solving problems]

However, in order to eliminate the above-mentioned drawbacks, the present invention fixes another flat part to the already formed flat part, and of course when used as a horizontal type,
To provide a chip-type electrolytic capacitor that can be used both vertically and horizontally, and which can be soldered well even when used vertically.

〔Example〕

An embodiment of a vertically and horizontally used chip type electrolytic capacitor according to the present invention will be described below with reference to FIGS. 1 to 3.

An aluminum capacitor element 2 in which an anode foil and a cathode foil of aluminum foil are wound with electrolytic paper interposed therebetween and impregnated with an electrolytic solution is placed together with a rubber sealing body 3 in a bottomed aluminum case 4 with one side open. Incorporated. The open end of case 4 is curled 41
is applied, and the portion where the rubber sealing body 3 is located is subjected to a drawing process 42. The other ends of the lead wires 5 and 6, which have one end fixed to the anode foil and the cathode foil of the capacitor element 2 and are led out through the rubber sealing body 3, are rolled to form first flat parts 51 and 61. . The first flat parts 51 and 61 are parallel to each other and bent into a U-shape. Also,
Other plate-shaped second flat parts 52, 62 each bent in a U-shape in opposite directions are fixed to the leading-out portions of the first flat parts 51, 61 from the rubber sealing body 3. The electrolytic capacitor 7 thus configured is assembled into a bottomed exterior case 8 with one side open. Filler 9 is filled into the opening and hardened. Note that the bending of the flat portions 51, 52, 61, and 62, which will become external terminals, may be performed either before or after the electrolytic capacitor 7 is assembled into the exterior case 8. Furthermore, the outer surfaces of the flat parts 51, 52, 61, and 62 may protrude from the outer surface of the outer case 8 as shown in FIG. It may be on the same plane as the outer surface.

〔effect〕

According to the present invention described above, the external terminal has a pair of first flat portions 51 and second flat portions formed parallel to each other.
Since it is composed of the flat part 52, the first flat part 61, and the second flat part 62, when the chip electrolytic capacitor 1A is used as a vertical type, the mounting area on the board can be doubled. This has the advantage that the solder area can be increased. Further, as shown in FIG. 3, when used horizontally, the conductor land 10 on the substrate 10
A, 10B, second flat parts 52, 6 opposite to the first flat parts 51, 61 to be soldered
This provides an advantage in that other electronic components 11 can be soldered to 2.

[Brief explanation of the drawing]

Figure 1 is a side sectional view showing a chip type electrolytic capacitor according to the present invention, Figure 2 is a front view showing a chip type electrolytic capacitor according to the present invention, and Figure 3 is a horizontal cross-sectional view of the chip type electrolytic capacitor according to the present invention. Fig. 4 is a side sectional view showing the conventional example, Fig. 5 is a front view showing the conventional example, and Fig. 6 shows the conventional example placed horizontally on the substrate. FIG. 7 is a side view showing the state in which the conventional example is placed vertically on a substrate. In the figure, 1,1A...chip type electrolytic capacitor,
2... Capacitor element, 3... Sealing body, 4... Case, 5, 6... Lead wire, 51, 52, 61,
62... Flat part, 7... Electrolytic capacitor, 8...
Exterior case, 9...Filler, 10...Substrate, 10
A, 10B...Conductor land, 10C...Solder, 1
1...Electronic parts.

Claims (1)

[Scope of utility model registration request] The capacitor element and the sealing body were assembled in a case with one side open, and the two lead wires from the capacitor element through the sealing body were each rolled to form a first flat part.The electrolytic capacitor was made one side open. In a chip-type electrolytic capacitor that is assembled in a bottomed exterior case, the opening is filled with a filler, and the first flat parts serving as external terminals are arranged in parallel in a U-shape along the exterior case. A chip-type electrolytic capacitor in which a second flat part extending in the opposite direction to the first flat part is fixed and arranged in parallel in an inverted U-shape along an exterior case.