JPH0343667Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> This invention relates to a connector in which a capacitor is assembled as a filter for removing noise passing through connector pins.

<Prior Art> A stepped feedthrough capacitor is generally used as a capacitor serving as a noise removal filter for a connector. This capacitor is made by soldering a connector pin that passes through a pin insertion hole and an inner electrode pre-prepared on the inner surface of the pin insertion hole, and soldering an outer electrode pre-prepared on the outer surface of the capacitor to a ground plate or rear shell. Attach and connect,
Fixing the capacitor and making electrical connections.

<Problems to be solved by the invention> However, in the conventional structure described above, since feedthrough capacitors are fitted to each of the many parallel connector pins and then soldered, the assembly, especially each capacitor, is difficult. It is troublesome to fit each of the connector pins to the connector pins, and the assembly work requires a great deal of effort, making it difficult to improve productivity.

Furthermore, since the fixing of the capacitor and the electrical connection were all done by soldering, there was some difficulty in terms of the reliability of the connection.

The present invention has been devised in view of the above-mentioned conventional problems, and it is an object of the present invention to provide a connector that allows a capacitor to be assembled without any troublesome effort.

<Means for solving the problem> The connector according to the present invention has a cylindrical capacitor body having a pin insertion hole in the center and an electrode formed on at least the outer circumferential surface, and a support frame that serves as a rear shell or a ground plate. A cylindrical capacitor is formed in which the inner and outer electrode parts are insulated from each other by forming electrodes on both the inner and outer circumferential surfaces of the capacitor element body using plating films. A continuous plating film was formed on the outer electrode portion of the capacitor, and the support frame to which the capacitor was assembled was connected to a metal casing in a conductive state.

<Operation> According to the above configuration, the surface of the support frame and the outer electrode of the capacitor body are integrally connected by forming the electrode with the plating film, and the electrical connection between the support frame and the outer electrode is reliably performed. , a capacitor-integrated support frame is formed. By connecting this support frame to the casing, the outer electrode is electrically connected to the casing via the plating film on the surface of the support frame.

<Example> FIGS. 1 and 2 show an example of a connector with a noise filter according to the present invention.

The connector 1 of this embodiment is a female connector, and includes a metal casing 2, an insert 3 made of an insulating material, a rear shell 4 made of an insulating material, and a connector supported in parallel across the insert 3 and the rear shell 4. The protruding portion of the connector pin 5 from the rear case 4 is connected to the printed circuit board side, and the portion of the connector pin 5 driven into the insert 3 is connected to the mating male connector.

Each connector pin 5 is attached to the rear shell 4.
A cylindrical stepped capacitor A is installed as a filter to remove noise. Capacitor A has an inner electrode portion and an outer electrode portion provided on a capacitor body 7 having a pin insertion hole 7a in the center. The outer electrode portion of this capacitor A is continuous with the plating film 8 formed on the surface of the rear shell 4.

The procedure for assembling the capacitor A to the rear shell 4 and the procedure for forming the inner and outer electrodes of the capacitor A will be described below.

As shown in FIG. 3, first, a stepped cylindrical capacitor body 7 with electrodes 6 pre-plated on its entire circumference is supported at the pin insertion portion of the rear shell 4 by appropriate means such as insert molding. let

Next, as shown in FIG. 4, electroless plating is applied to the entire rear shell 4 that supports the capacitor body 7, and the outer surface of the rear shell 4, the outer surface of the capacitor body 7, and the pin insertion hole 7a in the center are plated. A series of electrodes 8 are formed over the inner surface.

Thereafter, as shown in FIG. 5, the electrode portions present on both end faces of the capacitor body 7 are removed by appropriate means such as wrapping.

By carrying out the above processing, the inner and outer opposing electrodes of the cylindrical capacitor A are formed in a mutually insulated state, and the rear shell 4 in which the capacitor A group is integrated is obtained.

The connection between the inner electrode part of the capacitor A and the connector pin 5 is done by soldering, and the outer electrode part is connected to the casing 2 at the end of the rear shell 4 via a plating electrode 8 on the surface of the rear shell. dropped to earth.

Incidentally, the electrode 6 previously formed on the capacitor body 7 does not necessarily have to be provided on the entire circumferential surface, and may be formed only on at least the outer circumferential surface.

<Another Example> As shown in FIG. 6, in a connector 1 in which a dedicated grounding plate 9 is assembled inside the casing 2, a capacitor A is attached to this grounding plate 9 in advance in the same manner as in the previous embodiment. The ground plate 9 may be assembled and connected to the casing 2 by soldering or the like. In this case, since the ground plate 9 is entirely plated, it may be made of a metal material or an insulating material.

As shown in this embodiment, the invention can also be implemented in a male connector.

Furthermore, as mentioned above, the member for assembling the capacitor A integrally may be any member as long as it is electrically connected to the casing 2, such as the rear shell 4 or the ground plate 9, and a utility model registration request may be made. In this range, these are collectively referred to as the support frame.

<Effects of the invention> As explained above, in the connector of the invention, the feedthrough capacitor as a noise removal filter can be integrally incorporated and supported in the support frame such as the rear shell or ground plate, and the capacitor can be It is easier to assemble the connector than in the past, which involved handling the connector as a single unit, and is effective in reducing assembly costs. Moreover, since the electrical connection between the support frame and the outer electrode of the capacitor is made by the electrode that is integrally formed by plating, the reliability of the electrical connection is higher than that of the soldered connection. This is a significant improvement over the conventional method, which relied solely on

[Brief explanation of drawings]

Fig. 1 is a partially cutaway plan view showing an example of a connector with a noise filter according to the present invention, Fig. 2 is a vertical side view thereof, and Figs. 3 to 5 are main parts showing the capacitor assembly procedure. FIG. 6 is a longitudinal sectional side view of a connector showing another embodiment. 2... Casing, 4... Rear shell (support frame), 6... Electrode, 7... Capacitor body, 7a
...Pin insertion hole, 8...Electrode, 9...Earth plate (support frame), A...Capacitor.

Claims (1)

[Claims for Utility Model Registration] (1) A cylindrical capacitor body having a pin insertion hole in the center and electrodes formed on at least the outer circumferential surface is supported by a support frame, and both the inner and outer peripheries of the capacitor body are A cylindrical capacitor is formed in which the inner and outer electrode portions are insulated from each other by forming electrodes on the surfaces using plating films, and a plating film continuous with the outer electrode portions of the capacitor is formed on the surface of the support frame. , a connector with a noise filter that connects the support frame with this capacitor assembled to a metal casing in a conductive state. (2) The connector with a noise filter according to claim 1, wherein the support frame is a rear shell made of an insulating material and connected to the rear end of the casing. (3) The connector with a noise filter according to claim 1, wherein the support frame is a grounding plate incorporated inside the casing.