JPH02208917A - Manufacture of capacitor - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] [Industrial field of application] The outside of Kizari J is molded with an insulating resin.
The present invention relates to a method of manufacturing a capacitor that includes a solid electrolytic capacitor element and an element such as an inductor or resistor or a fuse inside the insulating resin.

(Prior Art) A conventional capacitor of this type will be explained with reference to FIG. 1 is a solid electrolytic capacitor element, which has a substantially rectangular external shape and has an anode body 2 made of tantalum, for example, protruding from one side thereof. One end of a first lead wire 4 is welded perpendicularly to the 0wA electrode body 2, which has a cathode layer 3 formed on the outer surface other than the side surface from which the anode body 2 is protruded. , this first lead wire 4 is bent at a right angle near this welding part, forming an L-shape.

The other end is parallel to the anode body 2 and extends in the direction in which the anode body 2 protrudes. An end of a straight second lead wire 6 is electrically connected to the cathode layer 3 of the capacitor element 1 via, for example, a fuse 5, and this second lead wire 6 is connected to the first lead wire 6.
The lead kQ4 of if is parallel to the lead kQ4 of if and is pulled out to the same side. The solid electrolytic capacitor element 1, the fuse 5, and the connection portion between these and the first or wS2 lead wire 4.6 are molded with an insulating resin 7.

A conventional manufacturing method for a capacitor having the structure described above is shown in Fig. 5 (
The following explanation will be given in the order shown in the figures shown in a) and (b). A support body 8 formed in a band shape is arranged.

Then, the straight portion in the longitudinal direction of the L-shaped first lead wire 4 and the second straight wire 6 are made parallel to each other with an interval,
With this parallel part perpendicular to the support 8, the first
and the respective ends of the second lead wires 4.6 are fixed to the side edges of the support body 8. However, the tip of the end of the first lead wire 4 that is bent at right angles is directed toward the second lead wire 6 (FIG. 5(a)).Next, the capacitor element l is attached to the anode body Place the anode body 2 with its protruding direction facing toward the support body 8.
and the bent end on the tip side of the f51 glue wire 1a4 are welded together orthogonally, and the tip of the second lead wire 6 and the cathode layer 3 of the capacitor element l are electrically connected via the fuse 5. Connect to. Then, the capacitor element l is
The capacitor element 1 and the fuse 5 are suspended from the support 8 via the second lead wire 4.6, and are immersed in a resin solution. Each connection part with the lead wires 4 and 6 of No. 2 is molded with resin 7, and then the first and second leads! !
Cut a4.6 along the dashed line A-A and make the capacitor element l.
The support 8 is removed from the (FIG. 5(b)).

(Problems to be Solved by the Invention) The conventional capacitor manufacturing method described above has a problem in that there are a large number of parts because there are two lead wires, the first lead wire 4 and the second lead wire 6. Furthermore, when fixing the first and second lead wires 4, 6 to the support 8, the distance between the tips of the first and second lead wires 4.6 on the side to which the capacitor element 1 is connected is adjusted. Although it is necessary to have a predetermined dimension, since the first and second Riet wires 4.6 are separately fixed to the support 8, variations in this dimension become large. Therefore, when connecting the capacitor element 1 and the fuse 5 to the lead wire 4.6, there is a problem that it is necessary to modify the first and second lead wires 4, 6 so that the distance between their ends becomes a predetermined distance. be. In addition, the capacitor element l
When suspended from the support 8 via the first and second lead wires 4.6, since the anode body 2 is located above the capacitor element l, the resin 7 is applied to the capacitor element l due to the immersion property. There is also a problem that the anode body 2 may be exposed from the resin 7 during deposition.

The present invention has been made in view of the above-mentioned problems of the conventional technology, and its purpose is to simplify the manufacturing of capacitors by reducing the number of lead wire parts to one; To provide a method for manufacturing a capacitor, which eliminates the work of modifying a lead kQ4.6 in order to connect a capacitor element L, a fuse 5, etc. to a lead wire, and further securely molds a capacitor element L, a fuse 5, etc. with a resin 7. That's true.

(Means for Solving the Problems) The present invention has been made in view of the above problems, and is provided in such a manner that two or more parts are arranged substantially perpendicularly to the support body in the same direction at intervals from one side edge of the support body. forming a frame having a lead having a pair of extending parallel legs and a connection connecting the parallel legs; an anode body projecting from the body; and an anode body formed on the outer surface of the body; A capacitor element having a cathode layer is disposed in a space surrounded by the lead and the support, and the anode is connected to the support from a position where the anode contacts substantially parallel to the longitudinal direction of the support on one parallel leg side. connecting the anode body to the lead within a range where the anode body is substantially perpendicular to the longitudinal direction of the support at the connecting portion; and connecting the cathode layer of the capacitor element to the other parallel leg portion. are connected through an electronic component that is any one of a resistor, an inductor, or a fuse, and the lead is connected between the connection position of the anode body and the lead and the connection position of the electronic component and the lead. separating the capacitor element, the electronic component, and the lead by immersing the capacitor element and the electronic component in a resin solution while suspending the capacitor element from the support via the lead. The second step is to mold the connecting portion with resin, and the second step is to attach the lead to the capacitor element side and remove the support.

(Operation/Effect) According to the manufacturing method of the present invention, a lead in which an anode lead and a cathode lead are integrated is used, and the lead is cut at a predetermined stage after the capacitor element is connected to the lead, and the anode lead is connected to the lead. Since the lead and cathode lead are formed, only one lead component is required. Since the parallel leg portions of the leads are connected by the connecting portion, there is no need to correct the spacing between the leads when connecting electronic components such as capacitor elements and fuses to the leads. In addition, since the capacitor element is suspended from a support with the anode body protruding downward from the capacitor element and immersed in the resin solution, the protruding part of the anode body, which is difficult to mold using conventional methods, is completely removed by dripping the resin solution. It has the effect of being able to be molded into.

(Example) An example of the present invention will be described with reference to FIGS. 1 and 2. In the capacitor of this embodiment, parts equivalent to those shown in the conventional example are indicated by the same reference numerals in the drawings, and detailed description thereof will be omitted.

FIG. 1 is a sectional view showing a capacitor manufactured by the manufacturing method of the present invention. The capacitor element 1 has an approximately rectangular parallelepiped shape, and one end of an anode lead wire 9 is orthogonally welded to an anode body 2 protruding from one side thereof. The anode lead wire 9 is bent upward at a right angle near this welding portion and is formed along the left side surface of the capacitor element 1. The end of a cathode lead wire 10 is electrically connected to the cathode layer 3 of the capacitor element 1 via a fuse 5, and this cathode lead wire 1O runs parallel to the anode lead wire 9 of the capacitor element 1. Along the right side, the end is drawn out in the same direction as the anode lead wire 9. This capacitor element 1, the fuse 5, and the anode and cathode lead wires 9.1 (1)
The connecting portion with the holder is molded with resin 7 as shown in the figure.

Figure 2(a) shows a method of manufacturing a capacitor having the above structure.
, (b), and (c), and will be explained in the order shown below. A support body 8 formed in a band shape is arranged.

Then, the parallel legs 11a and llb of the U-shaped lead 1lall, which has a pair of parallel legs 11a and lb and a connecting part 11c connecting these parallel legs, are perpendicular to the support 8. and the parallel legs 11a, l
Each end of the lb is fixed to a support 8. This fixing can be carried out, for example, by welding, by pasting with adhesive or the like, or by adhesive tape. Then, the capacitor element 1 is connected between the parallel legs 11a and Ilb of the lead wire 11.
The anode body 2 of the capacitor element 1 and the lead wire 1
Welding is carried out in a state where the connecting portion 11c of the first
(a)), next, the negative 8i layer 3 of the capacitor element l and the parallel leg portion 11b along the right side surface of the capacitor element l in FIG. 2(b) are electrically connected via the fuse 5,
The lead wire 11 is punched out and separated at the B position shown in the figure between the connection part between the anode body 2 and the connection part He and the connection part between the fuse 5 and the parallel leg fillb.
a and the connecting portion 11c are formed on the anode lead wire 9, and the parallel leg opening C is formed on the cathode lead wire 10 (FIG. 2(b)).
.

Then, the capacitor element l is connected to the anode and cathode lead wires 9,
The capacitor element 1 and the fuse 5 are suspended from the support 8 via 1O and immersed in a resin solution, and the capacitor element 1, the fuse 5, and the anode and cathode lead wires 9 and 10 are connected to each other. The connection part is molded with resin 7. After that, the anode and cathode Riet wires 9.10 are connected to the parallel legs 11.
When the a, llb are fixed to the support 8 by welding or pasting, the parallel legs 11a, llb can also be fixed by cutting along the dashed line CC shown in FIG. 2(C).
When capacitor element b is fixed to the support 8 with an adhesive tape, the support 8 is removed from the capacitor element l by peeling off the adhesive tape (FIG. 2 ((:)).

However, in this embodiment, the anode body 2 of the capacitor element l
is welded to the connection fj'1lllc of the lead wire 11, and the cathode layer 3 and the parallel leg portion 11b are electrically connected via the fuse 5, and then the lead wire 11 is cut at B, but the anode After welding the body 2 to the connecting part and cutting the lead wire 11 at B, the cathode layer 3 and one parallel leg part tt
b may be electrically connected via the fuse 5.

In addition, the cathode layer 3 and the parallel leg portion 11b of the lead wire 11 are connected to JlabAt via the fuse 5, but one of the inductors or resistors of the electronic components described in the claims is connected via the fuse 5. A composite component including a capacitor and an inductor or a capacitor and a resistor can be formed by connecting the capacitor and the inductor through the capacitor and the resistor.

Then, the capacitor element 1 is made into a substantially rectangular parallelepiped, and the lead wire 11 is made into a U-shape that follows the outline of the capacitor element 1, or the capacitor element 1 is made into a disk-shaped capacitor element 12 as shown in FIG. In addition, the lead 1iJll may be shaped like a letter 0 and has a semicircular connecting portion that follows the contour of the capacitor element 1.

Then, a lead wire 11 separate from the support 8 was fixed to the support 8, and a capacitor element 1 was connected to this lead wire 11. A B plate made of metal that can be used as a lead was punched out, and the lead and support were It is also possible to form an integral frame such as 8 and connect the capacitor element l to this frame.

Further, the anode body 2 is arranged in a shape I substantially perpendicular to the longitudinal direction of the support body 8.
The cathode layer 3 was welded to the connecting portion 11c by the fuse 5, and the anode layer 3 was connected to one of the parallel leg portions 11b via the fuse 5. It is also possible to weld to one parallel leg portion 11a or llb or connecting portion 11c within the range, and connect the cathode layer 3 via the fuse 5 to the other position of the lead wire 11 to which the anode body 2 is not welded. . The point is that when the capacitor body l is lifted out of the resin liquid, the capacitor body l is placed on the support body 8 so that the anode body 2 and the fuse 5 can be easily molded with the resin 7.
It is sufficient that the anode body 2 is connected to the lead wire 11 so that the protruding direction of the anode body 2 does not face the support body 8 side when it is suspended.

[Brief explanation of the drawing]

Fig. 1 (Ca) is a cross-sectional view of an embodiment of a fused capacitor manufactured by the manufacturing method of the present invention, viewed from the front, and Fig. 1 (b) is a sectional view of the fused capacitor of the same embodiment, viewed from the right side. Cross-sectional view, Figure 2 (a), (b),
(c) is a diagram showing an embodiment of the procedure of the capacitor manufacturing method of the same invention, and FIG. FIG. 4 is a front cross-sectional view of an embodiment of a fuse-containing capacitor manufactured by a conventional manufacturing method, and FIGS. 5(a) and 5(b) are diagrams showing an example of the procedure of the conventional manufacturing method. It is. 1.12... Capacitor element, 2... Anode body,
3...Cathode layer, 5...Fuse, 7...Resin, 8...Support, 9...Anode lead wire, 10
... Cathode lead wire, 11... Lead wire.

Claims (1)

[Claims] (1) A lead having a pair of parallel legs extending in the same direction substantially perpendicular to the support at a distance from one side edge of the support, and a connecting portion connecting these parallel legs. a capacitor element having an anode body protruding from a main body and a cathode layer formed on an outer surface of the main body in a space surrounded by the leads and the support body; Within the range from a position where the anode body contacts substantially parallel to the longitudinal direction of the support on one parallel leg side to a position where the anode body is substantially perpendicular to the longitudinal direction of the support at the connecting portion. connecting the anode body to the lead; and connecting the cathode layer of the capacitor element and the other parallel leg via an electronic component that is any one of a resistor, an inductor, or a fuse, and connecting the anode body to the lead. separating the lead between the connection position between the body and the lead and the connection position between the electronic component and the lead; and the step of suspending the capacitor element from the support via the lead. A step of immersing the capacitor element and the electronic component in a resin solution and molding the capacitor element, the electronic component, and the connection portion between them and the lead with resin, and leaving the lead on the capacitor element side and forming the support. A method for manufacturing a capacitor, comprising: removing.