JPH0367332B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a resin-encapsulated capacitor, and in particular, it is possible to lead out electrode terminals from any position on the side of the case, and to connect the encapsulated capacitor elements to the electrodes. The present invention relates to a method for manufacturing a resin-filled capacitor that allows easy connection to terminals.

The conventional manufacturing method for resin-encapsulated capacitors is to store the capacitor element, etc., which has been connected to electrode terminals in advance, in a resin case with one opening open, and then expose part of the electrode terminals to the outside. This is a method of applying a resin mold to the extracted state (for example, Utility Model Application Publication No. 58-411). However, this method has the disadvantage that the electrode terminals can only be led out in one direction of the case as described above, and the arrangement of the electrode terminals is severely restricted. In order to eliminate the above-mentioned drawbacks, it is possible to introduce the electrode terminals into the interior by penetrating the circumferential side of the case and connect the capacitor elements etc. in this state, but with this method, This creates a problem in that detailed connection work must be performed within a narrow case, which requires an extremely large amount of effort.

This invention was made in view of the above, and its purpose is to enable the electrode terminal to be led out from a free position on the side of the case, and to easily and quickly connect the enclosed capacitor element to the electrode terminal. An object of the present invention is to provide a method of manufacturing a resin-filled capacitor that can be carried out.

A method of manufacturing a resin-filled capacitor according to the present invention in accordance with the above object is a method of manufacturing a resin-filled capacitor in which a capacitor element is arranged in a box-shaped resin case with an upward opening and resin-molded. and at least 2
A base portion having two side surfaces cut out, and the cut side portions of the base portion being divided into at least two plate-shaped electrode mounting portions, and inserting an electrode terminal into each of the electrode mounting portions, Connect the capacitor element to the side of the electrode terminal located inside the case, then close each cut side surface of the base with each electrode attachment part, thereby positioning the capacitor element inside the case, and in this state, insert the resin. It is characterized by being molded.

The resin case is divided into parts as described above, the electrode terminal is inserted into the electrode mounting part, and the capacitor element etc. is connected to this terminal, and then the resin case is assembled.
Since it is resin molded, it is possible to lead out the electrode terminal from any position on the side of the resin case. Moreover, since the work of connecting the capacitor elements to the electrode terminals can be done outside the case before the case is assembled, there are almost no spatial restrictions and the work can be done easily and quickly. can.

Next, specific embodiments of the method for manufacturing a resin-filled capacitor of the present invention will be described in detail with reference to the drawings.

First, the resin case used for carrying out the method of this invention will be explained based on FIG. In the figure, 1 indicates the entire resin case, and this resin case 1 has a base portion 2 and two detachable electrode attachment portions 3 on the left and right sides of the base portion 2. There is. The base portion 2 is a member having a U-shaped cross section and opening upward, and includes a bottom wall 4 and a bottom wall 4.
It has a pair of side walls 5, 5 which are parallel to each other upwardly, and has a shape in which a pair of side surfaces in a direction perpendicular to the pair of side walls 5, 5 are cut away. A pair of grooves 6, 6 are formed inside each wall 4, 5, 5 near both left and right ends of each cut side surface.
is formed. The electrode mounting portion 3 is a plate-shaped member, and its upper and lower side edges 7, 7 and lower edge 8 are formed to be somewhat thin. That is, the both side edges 7, 7 of the electrode attachment part 3 are connected to the groove 6 of the base part 2.
By pressing the electrode attachment part 3 downward against the base part 2, the both side edges 7, 7 and the lower edge 8 are fitted into the groove 6, and the electrode attachment part 3 is placed in the base part 2. It is designed so that it can be attached to part 2. Note that the electrode mounting portion 3 has electrode terminals 9...
An appropriate number of through holes are formed for inserting 9.

A resin-sealed capacitor is manufactured using the resin case 1 as described above, and the procedure will be explained next. First, as shown in FIG. 2, plate-shaped electrode terminals 9...9 are attached by inserting them into through holes provided in each electrode attachment part 3, 3. In this case, the electrode terminals 9 . . . 9 may be attached by being press-fitted into the through holes, or may be bonded using resin or the like. Next, as shown in FIG. 3, a predetermined capacitor element or the like 10 is connected between the electrode terminals 9 attached to the electrode attachment parts 3, 3 as described above. When the connection of the capacitor element etc. 10 is completed in this way, the resin case 1 is assembled by attaching the electrode attachment parts 3, 3 to the left and right sides of the base part 2 as described above, and the capacitor element etc. 10 is assembled. is located inside the case 1 (Fig. 4). Thereafter, in this state, epoxy resin or the like is injected into the resin case 1 to encapsulate the capacitor elements 10, thereby completing the manufacture of the resin-filled capacitor (FIG. 5).

In the manufacturing method described above, by changing the position of the through hole provided in the electrode attachment part 3, it is possible to lead out the electrode terminals 9...9 from any position of the resin case 1. Even if the lead-out positions of the electrode terminals 9...9 are changed as shown in FIG. It is possible to carry out the work outside the case 1 where the work can be done, and then place it inside the case 1. Therefore, it becomes possible to perform the connection work of the capacitor elements 10 easily and quickly. In addition, in the resin case 1 explained above, each side edge 7, 7, 8 of the electrode mounting part 3 is
Since it is structured to fit into the groove 6 of the base portion 2, when the resin is injected into the case 1, it can be prevented from leaking, and stable molding operations can be performed.

Note that in the resin-filled capacitor manufactured as described above, a plurality of plate-shaped electrode terminals 9...9 are led out in multiple directions from the resin case 1. When fixing the capacitor body to a board etc.,
As shown in FIG. 6, it is possible to fix at multiple positions. As a result, when this resin-sealed capacitor is used as a noise prevention capacitor for automobiles, it is possible to improve its vibration resistance.

Although one embodiment of the method for manufacturing a resin-filled capacitor of the present invention has been described above, the method for manufacturing a resin-filled capacitor of the present invention is not limited to the above embodiment, and can be implemented with various modifications. It is. For example, in the above example, the resin case is divided into three parts, the base part and the two electrode attachment parts, but it can be divided into any number of parts. Further, in the above example, the electrode terminals are led out in opposite directions, but they may be led out in any direction. Furthermore, in the above, a structure is adopted in which the electrode mounting part is attached to the base part by fitting each side edge of the electrode mounting part into the groove of the base part, but the point is that the resin mold It is only necessary that the two do not separate from each other, and therefore it is possible to adopt various structures.

The method for manufacturing a resin-filled capacitor of the present invention is configured as described above. Therefore, according to the method for manufacturing a resin-filled capacitor of the present invention, the electrode terminals are led out from any position on the side of the case. In addition, it becomes possible to easily and quickly connect the capacitor element to the electrode terminal.

[Brief explanation of drawings]

FIG. 1 is an exploded perspective view of an example of a resin case used to carry out the method of manufacturing a resin-filled capacitor of the present invention, and FIGS. 2 to 5 show each step of an example of the method of manufacturing a resin-filled capacitor of the present invention. Fig. 2 shows the completed state of electrode terminal installation;
Figure 3 shows the state in which the connection of capacitor elements etc. has been completed, Figure 4 shows the state in which the case assembly has been completed, and Figure 5 shows the state in which the case assembly has been completed.
The figures each show a completed state of resin molding, and FIG. 6 is a perspective view showing a fixed state of the resin-filled capacitor manufactured above. DESCRIPTION OF SYMBOLS 1... Resin case, 2... Base part, 3... Electrode mounting part, 9... Electrode terminal, 10... Capacitor element.

Claims (1)

[Claims] 1. In a method for manufacturing a resin-filled capacitor in which a capacitor element is disposed in a box-shaped resin case that opens upward and is resin-molded, the resin case is formed into a resin case having a bottom and at least two side surfaces cut out. A base portion and at least two plate-shaped electrode attachment portions that can be closed on the cut-out side portion of the base portion are formed separately, and an electrode terminal is inserted into each of the electrode attachment portions, and the electrode terminal is inserted into the case inside the case. The capacitor element is connected to the side where the capacitor element is located, and then each cut-out side part of the base part is closed with each electrode attachment part, and the capacitor element is thereby positioned in the case, and resin molding is performed in this state. A method for manufacturing a resin-encapsulated capacitor.