JPH0620862A - Dry film capacitor and manufacture thereof - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a dry film capacitor which can easily and surely connect a terminal piece of a terminal board unit and a metallikon of a capacitor element during manufacturing. [Structure] The terminal plate unit 12 and the capacitor element 16 are individually assembled in a case 9, and a hole 11 for connecting the terminal piece 15 of the terminal plate unit 12 and the metallikon 17 of the capacitor element 16 is formed at the bottom of the case 9. In addition, the hole 11 is sealed by the seal 18.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dry film capacitor having a structure in which a metallikon at both ends of a capacitor element and a terminal piece of a terminal board unit are connected by welding or soldering.

[0002]

2. Description of the Related Art Generally, as shown in FIGS. 3 and 4, a dry film capacitor of this type includes a bottomed cylindrical synthetic resin case 2 having an opening 1 for fitting a terminal plate unit, and a base. Attach the terminal 4 to the plate 3 and attach the terminal piece 5 to the bottom surface.
Of the terminal plate unit 6 and the capacitor element 8 having metallikons 7 at both ends, and the metallikon 7 of the capacitor element 8 and the terminal piece 5 of the terminal plate unit 6 are prepared in advance.
After connecting by welding or soldering, the capacitor element 8 is housed in the case 2 and at the same time the terminal plate unit 6
Is fitted in the opening 1 of the side portion, and then the case 2 is filled with resin and sealed.

[0003]

By the way, as described above, the capacitor element 8 and the terminal plate unit 6 are attached to the case 2 as described above.
Terminal piece 5 connected to the metallikon 7 when assembled in
Also, there is a problem that unnecessary force is applied to the connection portion, the terminal piece 5 is broken, or the connection is disconnected. In particular, the case 2 made of synthetic resin often has poor molding accuracy, the wall thickness is not uniform, and the capacitor element 8 has to be pushed in forcefully when it is inserted. I often did.

In view of the above-mentioned conventional problems, the present invention aims to provide a dry film capacitor in which the terminal piece of the terminal plate unit and the metallikon of the capacitor element are securely connected at the time of manufacturing and there is no disconnection, and a manufacturing method thereof. And

[0005]

In order to achieve the above object, the present invention is directed to a case where a terminal plate unit and a capacitor element are separately assembled in a case, and a terminal piece of the terminal plate unit and a metallikon of the capacitor element are connected to the bottom of the case. A hole for working is formed and the hole is sealed with a seal.

In addition, after the capacitor element and the terminal plate unit are individually assembled in a case, a metallicon of the capacitor element and a terminal piece of the terminal plate unit are connected through a hole in the bottom of the case.

[0007]

According to the present invention, in the above construction and manufacturing method, the capacitor element and the terminal plate unit are individually incorporated in the case. After that, the terminal piece and the metallikon are welded or soldered through the hole at the bottom of the case, so that no excessive force is applied to the terminal piece and the metallikon part, and the terminal piece is not broken or the connection is not defective.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. As shown in the figure, the case 9 is formed of synthetic resin in a cylindrical shape with a bottom, and has an opening 10 on its side and a hole 11 of a considerably large diameter at the bottom. The terminal plate unit 12 is configured by attaching the terminals 14 to the base plate 13 and letting out the terminal pieces 15 at the lower part thereof. Further, the capacitor element 16 is formed by spraying a metallikon 17 serving as an electrode on both ends.

The terminal plate unit 12 is fitted into the opening 10 on the side of the case 9, and then the capacitor element 16 is inserted into the case 9. And the terminal piece 15 of the terminal board unit 12
The metallikon 17 of the capacitor element 16 and the metal element 17 of the capacitor element 16 are connected by welding or soldering work through the hole 11 at the bottom of the case 9. In addition, the terminal piece 15 on the opening side of the case 9 and the metallikon 17
Is connected from the opening side. After the connection is completed, the hole 11 at the bottom of the case 9 is closed by the seal 18. The sticker 18 is printed with the rating of the capacitor and the like, and also functions as a display label. After these operations, the case 9 is filled with resin (not shown) to complete the dry film capacitor.

The dry film capacitor according to this embodiment has the terminal board unit 12 and the capacitor element 16 as described above.
Since and are assembled in the case 9 individually, that is, in the unconnected state, even if an excessive force is applied to the terminal piece 15 and the metallikon 17, there is no relation to poor connection, and the connection work is performed after the assembly. , No connection failure at the time of manufacturing. Further, these connecting operations can be carried out with a simple structure in which a hole 11 is formed in the bottom of the case 9. Since the seal 18 that seals the hole 11 can function as a display label, no special display label is required.

[0011]

As is clear from the description of the above embodiment,
The present invention has a structure and manufacturing method in which a hole is formed in the bottom of a case, the terminal plate unit and the capacitor element are individually assembled in the case, and then the terminal piece of the terminal plate unit and the metallikon of the capacitor unit are connected through the hole. The connection between the metallikon of the capacitor unit and the terminal piece of the terminal plate unit is not damaged or defective during manufacturing, and the connection can be easily made by forming a hole in the bottom of the case. In addition, a seal that closes the hole can be used as a display label, which has a great industrial effect.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a dry film capacitor of the present invention.

FIG. 2 is a sectional view of the dry film capacitor.

FIG. 3 is an exploded perspective view of a conventional dry film capacitor.

FIG. 4 is a sectional view of the dry film capacitor.

[Explanation of symbols]

 9 Case 10 Opening 11 Hole 12 Terminal board unit 15 Terminal piece 16 Capacitor element 17 Metallicon 18 Seal

Claims (3)

[Claims] 1. A bottomed cylindrical case having an opening for fitting a terminal plate unit on its side, a terminal plate unit fitted in the opening, and metallikons on both ends, and inserted into the case. It consists of a capacitor element and connects the terminal piece of the terminal board unit and the metallikon by welding or soldering,
A dry film capacitor having a structure in which a case is filled with resin, a hole for connecting a metallikon and a terminal piece is formed in a bottom portion of the case, and the hole is sealed with a seal. 2. The dry film capacitor according to claim 1, wherein the seal is provided with an indication such as a rating of the capacitor. 3. A terminal plate unit is fitted into an opening on a side portion of a case, a capacitor element having metallikons at both ends is inserted into the case, and a capacitor element is inserted through a hole for connection work formed at a bottom portion of the case. A method for manufacturing a dry film capacitor, comprising connecting a metallikon and a terminal piece of a terminal board unit by welding or soldering, sealing the hole with a seal, and filling a resin in a case.