JPS6144474Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an electronic device storage case, particularly one that takes measures to prevent noise.

Since electronic devices installed in automobiles and the like are located near noise sources such as ignitions, special measures must be taken to prevent external noise. A common and effective measure to prevent external noise is to place a noise prevention capacitor called a bypass capacitor in advance in a place where noise is likely to enter. However, if the capacitor is installed incorrectly or incorrectly, it will not be possible to obtain a sufficient noise prevention effect. By the way, conventional electronic device storage cases are usually made of metal such as iron plates, and the noise prevention capacitor is connected by soldering between the connector attached to the case and the case body. It was normal.
However, with such conventional metal cases, drilling holes and screwing to attach connectors is very troublesome, and it is even more difficult to connect noise prevention capacitors to them by soldering. It's a hassle. Usually, the area around the connector is crowded with wiring, and connecting additional capacitors here is very complicated. Therefore, a noise prevention capacitor is sometimes mounted on a printed circuit board housed in the case, but in this case, noise penetrates into the inside of the case, making it impossible to obtain a sufficient noise prevention effect.

This idea was made in view of the above-mentioned conventional background, and its purpose is to secure the mounting location of the noise prevention capacitor at the connector part that is most effective for noise prevention, and to It is an object of the present invention to provide an electronic device storage case which is highly suitable for mass production and which greatly simplifies the installation of the noise prevention capacitor and the connector to which the capacitor is connected.

Hereinafter, embodiments of this invention will be described in detail based on the drawings.

FIGS. 1 and 2 show an embodiment of an electronic equipment storage case according to this invention. The storage case shown in the figure has a case body 1 made of conductive resin 3.
, a connector pin 5 penetrating between the inside and outside of this case body 1 , a non-conductive resin portion 4 that electrically insulates and isolates this connector pin 5 from the case body 1 , and the case body 1 and the connector Noise prevention capacitor 6 connected between pin 5
and has. The noise prevention capacitor 6 is molded in advance on the non-conductive resin part 4, and one terminal 7 thereof is connected to the connector pin 5, and the other terminal 8 is connected to the conductive resin part 4. The case body 1 is embedded in the plastic resin 3.
electrically connected to. Here, the extended end of the connector pin 5 inside the case is directly connected to the printed circuit board 2 housed within the case body 1. The connector pin 5 is connected to one terminal 7 of a capacitor 6 in advance, and after molding it together with the capacitor 6 in the non-conductive resin part 4, the connector pin 5 is attached to the case body 1.
It is integrated with the case body 1 by insert molding or the like during molding. As a result, as shown in FIG. 2, the other terminal 8 protrudes from the non-conductive resin portion 4.
is embedded in the conductive resin 3 side and can be electrically connected to the case body 1. In this way, in the electronic device storage case having the above-described structure, the connector pins 5 for connection and the capacitor 6 for noise prevention can be easily attached even in processes such as molding and molding, which are extremely suitable for mass production. There is. Furthermore, the noise prevention capacitor 6 can be attached to the connector portion separating the inside and outside of the case body 1, and this position is also the most effective position for preventing noise from entering the case.

As described above, the electronic device storage case according to this invention can be constructed by molding the case body out of synthetic resin, which is a method that is extremely suitable for mass production, and the mounting of connector pins for connection and capacitors for noise prevention can also be done easily. In the process step of constructing the case, it can be carried out using a method suitable for mass production such as molding or insert molding, thereby achieving excellent mass production suitability. In addition, the noise prevention capacitor is located at a location where the noise prevention effect is most effective, so that it can reliably prevent noise from entering.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an electronic device storage case according to the invention with the lid opened, and FIG. 2 is a sectional view of the main part thereof. 1... Case body, 2... Printed circuit board,
3... Conductive resin, 4... Non-conductive resin part, 5...
... Connector pin, 6 ... Noise prevention capacitor, 7, 8 ... Terminal of capacitor 6.

Claims (1)

[Scope of utility model registration request] A case body made of conductive resin, a connector pin penetrating between the inside and outside of this case body, a non-conductive resin part that electrically insulates and isolates this connector pin from the case body, and the case body and A noise prevention capacitor is connected between the connector pin and the noise prevention capacitor is molded in a non-conductive resin part, and one terminal of the noise prevention capacitor is connected to the connector pin. An electronic device storage case characterized in that the other terminal is embedded in the conductive resin and electrically connected to the case body.