JPH047588Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a connector with a noise filter that removes noise passing through connector pins.

<Prior Art> As a conventional connector of this type, there is a connector as shown in FIG. This connector has a conductive plate 5 made of metal such as a ground plate or a shield plate. A stepped feedthrough capacitor 7 for noise removal is fitted into the conductive plate 5. capacitor 7
A connector pin 6, which becomes the center conductor, is inserted into the center hole 7a. Center hole 7 of capacitor 7
The inner electrode 9 and the connector pin 6 formed on the inner peripheral surface of the capacitor 7, and the outer electrode 10 and the conductive plate 5 formed on the outer peripheral surface of the capacitor 7 are each fixed by soldering. The connector pin 6 is inserted into a hole 3a formed in an insulating case 3, which is an insulating member serving as the main body of the connector.

<Problems to be Solved by the Invention> By the way, the capacitor is usually made of a material such as dielectric porcelain that becomes brittle and easily cracks when subjected to high heat. However, in the conventional example, the high heat generated during soldering and fixing was easily applied to the capacitor, so there was a risk that the capacitor would crack or, in the worst case, be damaged. It was hot.

Moreover, since this capacitor is fixed by soldering, there is also a risk of breakage when stress is applied to the connector pin.

Furthermore, since it is soldered, a flux cleaning process is required after fixing the capacitor.
This has been one of the factors that hinders productivity improvement.

<Means for Solving the Problems> Therefore, in order to solve such problems, the present invention provides a connector having the following configuration. That is, the connector has one end of a feedthrough capacitor interposed between an insulating member and a conductive plate, one end of which is fixed to the insulating member, and a flange portion is formed at an intermediate position. a through-type capacitor in which the other end of the connector pin is inserted in contact with an inner electrode, and in which the outer electrode contacts the conductive plate in the inserted state; A conductive elastic body is interposed in a compressed state between the inner electrode in the recess and the flange of the connector pin.

<Function> According to the above configuration, the feedthrough capacitor is fixed by being pressed onto the conductive plate by the restoring force of the elastic body, and the connector pin and the inner electrode of the capacitor, and the outer electrode of the capacitor and the conductive plate are connected. Electrical continuity is achieved.

<Embodiment> FIG. 1 is a sectional view of a connector with a noise filter according to an embodiment of the present invention. In FIG. 1, reference numeral 1 indicates the entire connector of the embodiment. The connector 1 includes a metal front shell 2a and a rear shell 2b that are butted against each other.

In the rear shell 2b, an insulating rear case 3 and a front case 4, which are insulating members, are provided.
Between both cases 3 and 4, there is a ground plate 5 which is a conductive plate.
is provided. In this case, the ground plate 5 is fixed by soldering to the inner surface of the rear shell 2b. A large number of feedthrough capacitors 7 are attached to the ground plate 5. A connector pin 6 is supported by passing through holes formed in each of the rear case 3, the noise filter through-type capacitor 7 attached to the ground plate 5, and the front case 4.

A connector pin 6 protruding from the rear case 3 to the outside is connected to a printed circuit board (not shown). In addition, both shells 2a,
2b is adapted to be connected to the ground circuit of the printed circuit board.

Next, the support structure of the capacitor 7 will be described in detail.

As shown in FIG. 2, a flange portion 6a is formed at an intermediate position of the connector pin 6. One end side of the connector pin 6 is driven into the rear case 3 from below in the drawing until the flange portion 6a thereof comes into contact with the rear case 3 and is supported. A coil spring 8 as a conductive elastic body and a stepped through-type capacitor 7 are sequentially provided around the connector pin 6 from the driving direction.

The capacitor 7 is installed in such a manner that one end of the large diameter portion 7b faces the flange portion 6a. The small diameter portion 7c of the capacitor 7 is also fitted and supported by the ground plate 5, which serves as a capacitor support member. In this case, the coil spring 8 is installed between the flange portion 6a and the recess 7d formed in the large diameter portion 7b of the capacitor 7 in an appropriately compressed state, and is brought into close contact with the inner electrode 9 within the recess 7d. become. Therefore, this capacitor 7 is received and supported by the ground plate 5 by the elastic restoring force of the coil spring 8 via its outer peripheral step portion 7a.

Since the coil spring 8 is electrically conductive, it functions to electrically connect the connector pin 6 and the inner electrode 9 of the capacitor 7. As a result, the outer electrode 10 of the capacitor 7 has an outer circumferential step 7a.
It is brought into conductive contact with the ground plate 5 at.

FIG. 3 is a sectional view of main parts of another embodiment, in which parts corresponding to those in FIG. 2 are given the same reference numerals, and
Explanation of the structure and operation of parts common to the figures will be omitted. The feature of the embodiment shown in FIG. 3 is that in addition to using the coil spring 8 shown in FIG. 2, a cylindrical body 8 made of conductive rubber and having the same function as the coil spring 8 is used.

Although the capacitor in the embodiment is a stepped capacitor, it is of course possible to use a non-stepped capacitor in the same manner as described above.

Further, the basic configuration of the connector is not limited to that of the above embodiment.

<Effects of the invention> As explained above, according to the invention, since the structure does not require any soldering to attach the feedthrough capacitor, there is no risk of damage to the capacitor due to the high heat generated during soldering. All disappeared.

Furthermore, since the connector pins are not completely fixed, some relative displacement between the components is allowed even if stress is applied to the connector pins, so damage to the capacitor can now be effectively prevented in this respect as well.

In particular, since the time-consuming soldering process is no longer necessary, productivity is improved, and post-processing processes such as flux cleaning are also no longer necessary, which is very effective in reducing assembly costs.

[Brief explanation of drawings]

Figures 1 to 3 relate to embodiments of the present invention,
FIG. 1 is a sectional view showing an example of a connector, FIG. 2 is an enlarged sectional view of a capacitor attachment part, and FIG. 3 is a sectional view of a main part of another embodiment. FIG. 4 is a sectional view of a main part of a conventional example. 3... Case, 5... Support member, 6... Connector pin, 6a... Flange portion, 7... Feedthrough capacitor, 7a... Step portion, 8... Elastic body, 9... Inner electrode, 10... ...outer electrode.

Claims (1)

[Scope of Claim for Utility Model Registration] A connector with a noise filter in which one end of a feedthrough capacitor is interposed between an insulating member and a conductive plate, one end of which is fixed to the insulating member, and a conductive plate located at an intermediate position. a connector pin having a flange portion formed thereon; a feedthrough capacitor in which the other end of the connector pin is inserted into contact with an inner electrode, and in which the outer electrode contacts the conductive plate in the inserted state; and the feedthrough capacitor. Equipped with a noise filter characterized by comprising an electrically conductive elastic body interposed in a compressed state between an inner electrode in a recess formed at one end and a flange of the connector pin. connector.