JP2003151676A - Electric component storage housing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To structure a small and light electric component storage housing having excellent water proofing and mechanical connection strength. SOLUTION: A cylindrical projecting portion 22 and a groove 23 formed on a peripheral surface of the cylindrical projecting portion 22 are provided so as to surround a connecting hole 21 formed on an outer wall of a case portion 20 storing an electric component. A connector 30 is attached by injection molding insulation resin so as to bury the cylindrical projecting portion in a peripheral wall portion 33.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic component housing for accommodating electronic components.

[0002]

2. Description of the Related Art An electronic part housing for housing electronic parts, particularly an electronic part housing for equipment mounted on a vehicle, is highly demanded for miniaturization and high functionality, and a metal case excellent in heat dissipation is adopted. Tend to be. Furthermore,
Improving heat resistance and waterproofness is also required in the engine room and in environments where the engine is directly attached.

The mounting structure of the connector for electrically connecting the inside and the outside of the case in the electronic component housing is as follows: the connector is attached to the outside of the case by an adhesive, the structure is attached by screw connection, or integrally molded. A mounting structure has been proposed.

For example, in Japanese Unexamined Patent Publication No. 2000-223208, a connector is integrally formed of resin in a cylindrical connector housing portion integrally formed in an aluminum die-casting case to realize electrical connection with the outside. The electronic component housing is described.

[0005]

In the conventional electronic component housing, the connector housing portion integrally formed with the case so as to cover the periphery of the resin-molded connector has a large and heavy electronic component housing. It becomes a factor to reduce the size and hinders the reduction in size and weight.

However, if the connector housing is made small, the waterproof performance of the joint surface between the case and the connector and the mechanical coupling strength of the connector are reduced.

An object of the present invention is to propose a small-sized and lightweight electronic component housing which is excellent in waterproof performance and mechanical coupling strength of a joint portion between a case and a connector.

[0008]

According to the present invention, the inside of a case portion is accommodated by a case portion for accommodating an electronic component and a conductor penetrating an insulating member attached so as to close a connection hole formed in an outer wall of the case portion. And a cylindrical projection part formed integrally with the outer wall of the case part so as to surround the connection hole formed in the outer wall of the case part, and an electronic part housing having a connector for electrically connecting A groove formed on the peripheral surface of the protrusion is provided, and the insulating member of the connector is attached by injection molding so that the cylindrical protrusion is embedded in the peripheral wall.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings. 1 and 2 show an electronic component housing suitable for use in an engine room of an automobile or directly attached to an engine.
FIG. 1 is a vertical side view of the connecting portion between the case portion and the connector, and FIG.
3 is a sectional view taken along line AA in FIG.

The electronic component housing according to this embodiment includes a case portion 20 made of aluminum or aluminum alloy in which the electronic circuit board 10 is mounted, and a connector 30 for electrically connecting the inside and the outside of the housing. Prepare

The case portion 20 has a connection hole 21 formed in the outer wall so as to penetrate the connection terminal, which is a connection conductor, in an insulated state by mounting the connector 30, and the outside of the outer wall so as to surround the periphery of the connection hole 21. The rectangular tubular projection 22 is integrally formed, and the groove 23 having a rectangular cross section is formed in the middle of the outer peripheral surface of the rectangular tubular projection 22. The case portion 20 is formed by aluminum die casting from the viewpoint of mass productivity, weight reduction, and improvement of heat dissipation, but it may be formed by cutting.

The connector 30 is connected to the connection hole 21 by means of a plug portion 31 inserted into the connection hole 21 provided in the case portion 20.
Connection terminal 32 so as to close the plug 31 and penetrate the plug 31.
Is held in an insulated state, and the rectangular cylindrical projection 22 is provided in the base of the peripheral wall 33 that stands up to receive the mating connector.
Are formed by injection molding of heat-resistant insulating resin so that the groove 23 is filled with the resin. As the heat-resistant insulating resin, PET (Polyethylene Terephthalate) is a lightweight, heat-resistant synthetic resin with excellent heat resistance and electrical insulation.
Resin, PPS (Polyphenylene Sulfide) resin, PBT
(Polybutylene Terephthalate) resin is suitable.

A conductor wire bonding portion 34 is formed on the inner end of the connection terminal 32 of the connector 30, and the conductor wire bonding portion 34 and the bonding pad 11 of the electronic circuit board 10 are bonded and connected by an aluminum wire 40. This wire connection may be a soldering connection.

The connector 30 in the electronic component housing thus constructed has a case having excellent waterproofness and mechanical strength due to the rectangular cylindrical projection 22 buried in the base of the peripheral wall 33 and the groove 23 on the outer periphery thereof. Combine with part 20. This excellent waterproofness and mechanical coupling strength is due to the peripheral wall portion 33.
The resin layer forming the base portion of the above (3) flows into the groove 23 to lengthen the joint surface and prevent it from coming off. If a ridge is provided instead of the groove 23 to obtain the same effect, the thick peripheral wall portion 33 is necessary in order to prevent the base portion of the peripheral wall portion 33 from being weakened by the thin portion generated by the ridge. Although the problem of increase in size and weight occurs, the structure in which the groove 23 is formed in the rectangular tubular projection 22 made of aluminum alloy, which is a high-strength member, requires the rectangular tubular projection 22 to be particularly thick. Therefore, it is suitable for reduction in size and weight.

In the above-described embodiment, the groove 23 on the outer periphery of the rectangular cylindrical projection 22 is a single line, but a plurality of grooves 2 are provided.
By forming 3, the waterproof property and the mechanical coupling strength are further improved. In the structure in which a plurality of grooves 23 are formed, the groove 2
It is not necessary for 3 to have a continuous annular shape, and even if a portion thereof is discontinuous at a position displaced in the circumferential direction, it may be a substantially annular shape. Further, the groove 23 can be easily formed in the die casting process by locating the groove 23 on the outer periphery of the rectangular tubular projection portion 22, but it is excellent if it is provided on the inner periphery of the rectangular tubular projection portion 22. It is possible to obtain waterproofness and mechanical bond strength.

Further, the connector 30 has a plug portion 31 through which a connection terminal 32, which is a part of the connector 30, penetrates, which is smaller than the connection hole 21 and is formed by resin molding separately from other portions. It can be configured to be attached to the case portion 20 by injection-molding the other portion so as to be integrated while the portion 31 is positioned in the connection hole 21.

[0017]

According to the present invention, it is possible to realize a small-sized and lightweight electronic component housing which is excellent in waterproofness and mechanical coupling strength of the joint portion between the case portion and the connector in the housing.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional side view of a connecting portion between a case portion and a connector according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

[Explanation of symbols]

10 ... Electronic circuit board, 20 ... Case part, 21 ... Connection hole,
22 ... Square tubular protrusion, 23 ... Groove, 30 ... Connector, 31
... stopper part, 32 ... connection terminal, 33 ... peripheral wall part.

   ─────────────────────────────────────────────────── ─── Continued front page    F-term (reference) 3G301 JA17 JA19                 4E360 AB12 AB31 AB51 BD01 EA03                       EA12 ED03 ED27 FA08 GA06                       GA11 GA24 GA29 GB93                 5E087 EE02 EE11 FF01 FF12 JJ01                       LL04 LL11 MM08 QQ04 RR06                       RR12

Claims (6)

[Claims] 1. A conductor for penetrating an inside and outside of the case portion by a conductor penetrating a case portion accommodating an electronic component and an insulating member attached so as to close a connection hole formed in an outer wall of the case portion. In an electronic component storage housing having a connector, a cylindrical projection formed integrally with the outer wall of the case so as to surround the connection hole formed on the outer wall and a peripheral surface of the cylindrical projection. An electronic component housing, wherein a groove is provided, and the insulating member of the connector is attached by injection molding so that the cylindrical protrusion is embedded in the peripheral wall. 2. The electronic component storage housing according to claim 1, wherein the groove formed in the cylindrical protrusion is formed on an outer peripheral surface of the cylindrical protrusion. 3. The electronic component storage housing according to claim 1, wherein the case portion is a metal member. 4. The electronic component housing according to claim 1, wherein the case portion is made of aluminum or an aluminum alloy, and the insulating member of the connector is made of heat resistant synthetic resin. . 5. The groove according to claim 1, wherein:
An electronic component storage housing, characterized in that it is formed in a substantially annular shape on the peripheral surface of the cylindrical projection. 6. The insulating member of the connector according to claim 1, wherein a part of the insulating member of the connector is embedded with a conductor so as to penetrate the part, and the part is located in the connection hole of the case part. An electronic component storage housing, characterized in that it is constituted by another portion formed by injection molding on the case portion.