JPS6032746Y2 - Structure of capacitor electrode terminals - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to the structure of electrode terminals of various types of capacitors such as canned capacitors and paper capacitors.

Conventionally, the structure of the electrode terminal of this type of capacitor is as shown in FIG. At the same time, a true cylindrical projection 3a formed approximately at the center of the disc-shaped electrode plate 3 is fitted into the recess 2a, and the two lead wires 4 are connected to the center of the electrode plate 3 through the insulating sealing member 2. The solder was evenly fixed to the inner surface of the cylindrical projection 3a.

The insulating sealing member 2 is provided with two lead holes 2b through which the two lead wires 4 are inserted, and the cylindrical protrusion 3a of the electrode plate 3 also corresponds to the lead holes 2b. Two perforations 3b are provided.

However, when the lead wire 4 is fixed to the inner surface of the true cylindrical projection 3a of the electrode plate 3, the two lead holes 2b of the insulating sealing member 2 and the two perforations 3b of the true cylindrical projection 3a of the electrode plate 3 are connected. It is necessary to fit the lead wire 4 and insert the core wire 4a of the lead wire 4 therethrough.

Thus, the two lead holes 2b and the two perforations 3b
The task of perfectly matching the two was time-consuming and required extremely excessive attention from the workers.

Therefore, it took a long time to manufacture electrode terminals for capacitors, making mass production extremely difficult.

Furthermore, if the core wires 4a of the two lead wires 4 are forcefully inserted into the lead holes 2b and the two perforations 3b with the two lead holes 2b and the two perforations 3b not completely aligned, that is, in a misaligned state, A part of the core wire 4a is caught between the insulating sealing member 2 and the electrode plate 3, and the two do not come into close contact with each other, making it impossible to maintain the airtightness of the capacitor body, and the lead wire 4
Soldering or otherwise fixing the core wire 4a to the electrode plate 3 caused various problems such as a decrease in tensile strength.

The present invention was devised in order to solve the above-mentioned problems, and an elliptical, rectangular, etc. recess is formed on the lower surface of the insulating sealing member, and an ellipse corresponding to the recess is formed approximately in the center of the electrode plate 3. In order to completely and reliably match the two lead holes provided in the insulating sealing member and the two perforations provided in the electrode plate protrusion by forming a rectangular protrusion and positioning the two for fitting. The purpose of this invention is to provide a novel capacitor electrode terminal structure.

Hereinafter, one embodiment of the structure of the electrode terminal of a capacitor according to the present invention will be described in detail with reference to the accompanying drawings.

Reference numeral 5 denotes an insulating sealing member fixed to the upper part of the case 1 by wrapping the upper edge 1a of the case 1, and is made of a rubber material or the like.

The insulating sealing member 5 may be integrally molded, or may have a structure in which a rubber member is attached to an insulating plate such as a bake plate.

5a is an elliptical cylindrical recess formed on the lower surface of the insulating sealing member 5.

Reference numeral 5b denotes two lead holes vertically disposed substantially in the center of the insulating sealing member 5, communicating with the elliptical cylindrical recess 5a from the outside, through which the two lead wires 4 are inserted.

Reference numeral 6 denotes a disc-shaped electrode plate, which has an elliptical cylindrical projection 6a approximately in the center thereof.

The elliptical cylindrical projection 6a has two perforations 6b, and when the elliptical cylindrical projection 6a is fitted into the elliptical cylindrical recess 5a of the insulating sealing member 5, the two perforations 6b become two lead holes 5b.
configured to match.

Reference numeral 5c denotes a circumferential groove carved on the lower surface of the insulating sealing member 5, which engages the rising piece 6c of the disc-shaped electrode plate 6 to maintain airtightness.

Reference numeral 7 denotes a capacitor element which is in pressure contact with the disk-shaped electrode plate 6, and is made of a combination of aluminum foil, capacitor paper, etc.

Next, a procedure for connecting the two lead wires 4 to the electrode plate 6 will be explained.

The elliptical cylindrical projection 6a of the disk-shaped electrode plate 6 is fitted into the elliptical cylindrical recess 5a of the insulating sealing member 5.

Thus, due to the special nature of the ellipse, the two are in close contact with each other without rotational deviation.

Therefore, the positions of the two lead holes 5b of the insulating sealing member 5 and the two perforations 6b of the disc-shaped electrode plate 6 are set, so the two lead holes 5b and the two perforations 6b match without the need for adjustment work. do.

However, if the lead wire 4 is inserted through each of the two lead holes 5b, the core wire 4a of the lead wire 4 will be inserted into the perforation 6 without resistance.
inserted into b.

By welding the solder 8, etc., the core wire 4 is
a can be connected to the inner surface of the elliptical cylindrical projection 6a.

The embodiment includes an elliptical cylindrical recess 5a and a cylindrical protrusion 6a.
In short, the shape of the cylindrical projection 6a is elliptical and the same shape as the recess 5a.

The present invention includes an insulating sealing member that has a recess and a circumferential groove approximately in the center and around the lower surface, and has two lead holes through which two lead wires are inserted, and a perforation into which the two lead core wires are inserted. an oval protrusion that is provided and that fits into the recess;
An electrode terminal for a capacitor, comprising an electrode plate integrally formed with the protrusion and a rising piece provided on the periphery and engaged with the circumferential groove, and solder for welding the core wires of the two lead wires to the inner surface of the protrusion. The structure provides the following effects.

(b) Since an elliptical projection is formed on the electrode plate and the projection is fitted into a recess on the lower surface of the insulating sealing member, the core wire of the lead wire can be rationally inserted into the perforation with a simple configuration. ,
Inserting the core wire becomes extremely easy, improving productivity.

(b) Since a rising piece is formed on the peripheral edge of the electrode plate, this engages with the circumferential groove of the insulating sealing member, and the electrode plate is brought into close contact with the lower surface of the insulating sealing member, making the fixing mode extremely stable. .

(c) Since two lead holes are provided in the insulating sealing member and the two lead wires are inserted through these lead holes, the process of welding the core wires of the lead wires to the inner surface of the protrusion with solder etc. is extremely easy, and , the efficiency when using two lead wires is high.

B) A part of the core wire of the lead wire can be prevented from being caught between the insulating sealing member and the electrode plate, and airtightness can be maintained and improved.

[Brief explanation of the drawing]

Figure 1a is a cross-sectional view of a main part showing an example of the structure of the electrode terminal of a conventional capacitor;
- A cross-sectional view taken in the direction of line A; FIG. 2 a is a cross-sectional view of a main part showing an embodiment of the structure of the electrode terminal of a capacitor according to the present invention; FIG. 2 is taken along arrow B-B in FIG. 2 a; It is a sectional view of the direction. 1...Case, 4...Lead wire, 5.
... Insulating sealing member, 5a ... Oval cylindrical recess, 5b ... Lead hole, 6 ... Electrode plate, 6a ... Oval cylinder protrusion, 6b...
・Perforation.

Claims (1)

[Scope of utility model registration request] A depression and a circumferential groove are formed approximately at the center and around the lower surface, and 2
An insulating sealing member is provided with two lead holes through which the lead wires of the book are inserted, and a perforation into which the core wires of the two lead wires are inserted, and an oval shaped hole having the same shape as the recess that fits into the recess. It is composed of a protrusion, an electrode plate integrally formed with a rising piece provided on the protrusion and the periphery and engaging with the circumferential groove, and solder for welding the core wires of the two lead wires to the inner surface of the protrusion. A structure of a capacitor electrode terminal characterized by: