JPH0241878Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field The present invention relates to cases for electronic components installed in vehicles such as automobiles, and in particular, to cases in which resin molding is performed to improve moisture resistance. This is related.

<Prior art> Conventionally, when attaching the connector 22 to the case 21 in which this type of electronic component is resin-molded, there is no way to drain water if water floods into the connector 22, so as shown in FIG. In addition to forming the water drain hole 22a, the side wall of the case 21 is also cut out to form an opening 21a so as to fit into the outer diameter of the water drain hole 22a.
After electronic components and the like are attached to the case 21 and the connector 22, the case 21 and the connector 22 are completely glued together at the opening 21a and the drain hole 22a so as not to create any gaps, and molding resin is injected. This prevents leakage during the curing process of the mold resin.

〓Problems to be solved by the invention〓 However, in the conventional method described above, if the adhesion is not perfect, the mold resin always leaks, so the adhesion work must be done carefully and is extremely difficult. At the same time, there is a problem in the process that the work is time-consuming, and there are currently no adhesives available for the inexpensive polyethylene and polypropylene resins that are usually used for this type of case and have excellent properties. First, this limits the usable resin materials, resulting in the problem that both the case 21 and the connector 22 become expensive.

〓Means for Solving the Problems〓 The present invention is a concrete means for solving the problems that occur in the above-mentioned conventional devices. In a vehicle electronic component case in which a drain hole of the connector is opened in a side wall surface of the case, the drain hole of the connector has a substantially shaped shape that fits into the opening of the case, and the drain hole and the opening are connected to each other. The above-mentioned conventional problems are solved by providing a case for an electronic component for a vehicle, characterized in that the fitting portion is provided with a concave portion and a convex portion that fit into each other. be.

〓Example〓 Next, the present invention will be explained in detail based on an example shown in the drawings.

What is indicated by the reference numeral 1 in FIG. 1 is a case for electronic parts for a vehicle, and the side wall of this case 1 is provided with an opening 1a that fits into the drain hole 2a of the connector 2, as described in the conventional example. However, according to the present invention, both of them are provided in a substantially shape, and on the opposing fitting surfaces, one side, for example, on the opening 1a side, there is a concave strip 1.
b is formed, and on the other side of the drain hole 2a, a protruding strip 2b shaped to fit into the grooved strip 1b is formed over the entire surface of the fitting surface. Furthermore, if necessary, flanged portions 2c and 2d are formed in the drain hole 2a so as to sandwich the side wall of the case 1, and together with the grooved portion 1b and the protruding portion 2b, the opening 1a The distance between the fitting portion of the water drain hole 2a and the water drain hole 2a is made to be in close contact with each other.

By forming the opening 1a and the drain hole 2a in this way, temporary attachment can be performed simply by inserting the two, and since the distance of close contact is increased, mold resin can be injected into the inside of the case 1. However, even if the viscosity of the mold resin decreases due to curing treatment such as heating, leakage can be prevented.

<Effects of the invention> As explained above, the present invention provides a case for a vehicle electronic component, in which the water drain hole of the connector has a substantially shaped shape that fits into the opening of the case, and the water drain hole and the opening The fitting part has a structure in which a recessed part and a protruding part are provided that fit into each other, so that this fitting part can be temporarily attached by simply inserting it, and the molded resin can be attached after the temporary attachment. Even when injected into the case, the distance between the fitting parts is increased to prevent leakage of the mold resin, and furthermore, after the mold resin hardens, both are securely fixed by the mold resin. In addition to abolishing the conventional gluing work between the case and connector, the resin material from which the case and connector are formed can also be freely selected, and has an excellent effect on process simplification and cost reduction. It is.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing one embodiment of a case for a vehicle electronic component according to the present invention, Fig. 2 is a plan view showing an enlarged main part of the same embodiment, and Fig. 3 is a perspective view showing a conventional example. It is a diagram. DESCRIPTION OF SYMBOLS 1...Case, 1a...Opening, 1b...Concave portion, 2...Connector, 2a...Drain hole, 2b...
Convex portions, 2c, 2d...flange-like portions.

Claims (1)

[Scope of utility model registration request] A vehicle electronic component case in which a connector is provided in a substantially box-shaped case that opens upward, and a drain hole of the connector opens in a side wall surface of the case,
The drain hole of the connector has a substantially shaped shape that fits into the opening of the case, and the fitting portion between the drain hole and the opening includes a concave line and a convex line that fit into each other. A case for electronic parts for a vehicle, characterized in that: