JPH0883988A - Electronic-control-unit housing case - Google Patents

Abstract

PURPOSE: To provide an electronic-control-unit housing case which forms a waterproof structure, which reduces the number of assembly processes, which eliminates a need of an adhesive and whose cost is reduced. CONSTITUTION: A return part 401 and a flange 403 are formed at a housing-case body 101 which houses an electronic control unit. A flange 604 to which the return part 401 is fitted and a return part 602 to which the flange 403 is fitted are formed. An O-ring 201 is arranged between the housing-case body 101 and a lid 102. The return part 401 is fitted to the flange 604. The flange 403 is fitted to the return part 602. Thereby, the body 101 is joined to the lid 102.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic control unit housing case for housing an electronic control unit in which a plurality of electronic components are mounted on an integrated circuit board, and in particular, realizes a waterproof structure with an inexpensive structure which is easy to assemble. The electronic control unit storage case.

[0002]

2. Description of the Related Art In an electronic control unit housing case for housing an electronic control unit, if water enters the case and adheres to electronic parts or the like, the electronic control unit may malfunction, so It is necessary to form a waterproof structure.

Conventionally, for example, there is an electronic control unit storage case formed in a waterproof structure as shown in FIG. In the figure, 801 is a main body formed in a planar rectangular shape,
Reference numeral 2 denotes a lid which covers the main body 801, and is an integrated circuit board 80.
3, an electronic control unit 805 having a plurality of electronic components 804 mounted therein is housed in a main body 801. In order to prevent water from entering the main body 801, the main body 80
1 is a packing provided at a joint portion 807 between the lid 1 and the lid 802. In addition, the main body 801, the packing 806, and the lid 8
02 and the packing 806 are fixed by an adhesive.

[0004]

However, in the above-mentioned conventional electronic control unit storage case, since there is a work step of fixing the packing to both the main body and the lid with an adhesive, the number of assembling steps is large, and the bonding process is difficult. There was a problem that the agent cost was also high.

That is, when fixing the lid to the main body,
First, there is a work of fixing the packing to the main body or the lid with an adhesive, and fixing the main body or the lid to which the packing is fixed to the main body or the lid with the adhesive. Further, since the adhesive has to be applied twice, the cost of the adhesive is high.

The present invention has been made in view of the above, and provides an electronic control unit storage case which is formed in a waterproof structure, which reduces the number of assembling steps and reduces the cost by eliminating an adhesive. The purpose is to

[0007]

In order to achieve the above-mentioned object, an electronic control unit storage case according to claim 1 is a storage case main body for storing an electronic control unit having a plurality of electronic components mounted thereon, and the storage case. In an electronic control unit storage case including a cover member for covering the main body and a waterproof member arranged between the main body and the cover member, the storage case main body has a portion abutting the cover member, At least a pair of adjacent two sides have a first female fitting portion, and a side other than the first fitting portion has a first male fitting portion, and the lid member is A second female fitting portion is provided at a portion that comes into contact with the first male fitting portion, and the first female fitting portion is provided.
Has a second male fitting portion in contact with the female fitting portion, and the waterproof member is disposed between the storage case body and the lid member, and the first female fitting portion is provided. Section and the second male fitting section are fitted together, and the first male fitting section and the second female fitting section are fitted together to thereby form the storage case body and the lid member. Is to join and.

According to a second aspect of the present invention, there is provided an electronic control unit accommodating case, wherein the first female fitting portion and the second male fitting portion, and the first male fitting portion and the second male fitting portion. Each of the female fitting parts of (1) causes stress due to deformation caused by fitting.

[0009]

In the electronic control unit storage case according to the present invention (claim 1), the storage case main body storing the electronic control unit mounting a plurality of electronic components and the lid member covering the storage case main body are joined together. , A waterproof member is disposed between the storage case body and the lid member, and the first female fitting portion and the second male fitting portion are fitted to each other, and the first male fitting portion and the first male fitting portion are connected to each other. Two
By mating with the female mating part, it is possible to easily join and form a waterproof structure.

An electronic control unit storage case according to the present invention (claim 2) is the first female fitting portion and the second male fitting portion, and the first male fitting portion. Since the waterproof part is pressed by the relationship between the first part and the second female fitting part in a leaf spring structure in which stress is generated by fitting, the joint can be further strengthened and the waterproof structure can be strengthened. Can be formed.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings. FIG. 1 is a perspective view of an electronic control unit storage case according to the present invention, and FIG. 2 is a sectional view taken along line AA of FIG. In the figure, 101 is a main body formed in a planar rectangular shape, and 102 is a lid covering the main body 101. Its body 1
An electronic control unit 301 as shown in FIG. 3 is housed in the interior 103 of 01. 201 is an O-ring provided between the main body 101 and the lid 102 as described later. In FIG. 3, 302 is an integrated circuit board, and 303 is a plurality of electronic components mounted on the integrated circuit board 302.

FIG. 4 is a perspective view of the main body 101 constituting the electronic control unit storage case according to the present invention, and FIG.
FIG. 6 is a sectional view taken along line BB of FIG. In the figure, 401, 402
Is a return portion having a substantially U-shaped cross section formed on the two adjacent sides of the upper portion of the main body 101, and the return portions 401 and 402 have recesses formed inward. 403 and 404 are return units 4
It is a tsuba that is formed on two sides facing 01, 402.
3,404 are formed toward the outside. Return part 4
01, 402 lower side 401a, 402a and collar 40
An O-ring 201 is placed on the upper surfaces of the 3,404. In this case, it is preferable to provide the O-ring 201 with a concave groove in which the O-ring 201 is placed on the lower sides 401a, 402a and the collars 403, 404 of the return portions 401, 402.
Can be placed stably.

FIG. 6 is a perspective view of the lid 102 constituting the electronic control unit storage case according to the present invention, and FIG. 7 is a sectional view taken along the line CC of FIG. In the figure, 601 and 602 are formed on two outer sides of the lid 102, and the collar 40 of the main body 101
The return portions 603 and 604 which engage with the return portions 403 and 404 are formed on two sides facing the return portions 601 and 602, and the main body 101
It is a collar to be inserted into the return portions 401 and 402 of the. And
The lid 102 is made of, for example, a material having a spring property such as stainless steel, and includes the return portions 601, 602 and the collar 60.
In the state before assembling, as shown in FIG. 7, 3, 604 are formed by bending so as to have a predetermined angle on the return portions 601 and 602 side.

In the above structure, the inside 1 of the main body 101
The electronic control unit 301 is housed in 03, and the return unit 40
The O-ring 201 is placed on the lower sides 401 a and 402 a of the 1,402 and the upper surface of the collar 302. And the main body 10
The collars 603, 60 of the lid 102 on the return parts 401, 402
4 and insert the lid 102 into the collars 403 and 404 of the main body 101.
The return parts 601 and 602 are engaged. Therefore, the lid 10
2 is pressed in the direction of arrow 104 shown in FIG.
Since the slide amount is only the width of the return part, the O-ring 20
The friction against 1 is small and the damage is small. further,
Since the slide amount is the minimum, the lid 102 can be easily assembled to the main body 101. In this case, the return portions 601, 602 and the flanges 603, 604 formed on the lid 102 warp and a stress 105 is generated on the main body 101, so that the lid 102 is firmly fixed to the main body 101. Also,
The return portions 601, 602 and the flanges 603, 604 warp and press the O-ring 201, so that the O-ring 201, the main body 101, and the lid 102 are closely joined, and the waterproof effect is improved.

Although the embodiment of the present invention has been described above, the present invention is not limited to this. For example, the return portion and the collar formed on the lid are bent and formed to warp when assembled, but the return portion and the collar formed on the main body may be bent. Further, the bending direction may be the opposite direction to that of the above embodiment.

[0016]

As described above, according to the electronic control unit storage case (Claim 1) of the present invention, the storage case main body which stores the electronic control unit mounting a plurality of electronic components, and the storage case main body When joining the lid member for covering the cover member, the waterproof member is arranged between the housing case body and the lid member, and the first female fitting portion and the second male fitting portion are fitted together. Then, by fitting the first male fitting portion and the second female fitting portion, they can be easily joined and a waterproof structure can be formed, so that the number of assembly steps can be reduced and the manufacturing cost can be reduced. can do.

According to the electronic control unit storage case (claim 2) of the present invention, the first female fitting portion and the second female fitting portion are provided.
The male fitting portion of No. 1 and the first male fitting portion and the second female fitting portion have a leaf spring structure in which a stress is generated by fitting, so that the waterproof member is Since it is pressed, the joint can be further strengthened and the waterproof structure can be firmly formed.

[Brief description of drawings]

FIG. 1 is a perspective view of an electronic control unit storage case according to the present invention.

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

FIG. 3 is a perspective view of an electronic control unit.

FIG. 4 is a perspective view of a storage case body.

5 is a sectional view taken along line BB of FIG.

FIG. 6 is a perspective view of a lid.

7 is a cross-sectional view taken along line CC of FIG.

FIG. 8 is a perspective view of a conventional example.

[Explanation of symbols]

 101 Main body 102 Lid 103 Inside of main body 201 O-ring 301 Electronic control unit 401, 402 Return part 403, 404 formed on the main body Collar 601, 602 formed on the main body Return part 603, 604 formed on the lid Tsuba

Claims (2)

[Claims] 1. A storage case main body for storing an electronic control unit having a plurality of electronic components mounted thereon, a lid member for covering the storage case main body, and a waterproof member arranged between the main body and the lid member. In the electronic control unit storage case including the above, the storage case main body has a first female fitting portion on at least a pair of two adjacent sides in a portion abutting the lid member, and 1 has a first male fitting portion on a side other than the fitting portion, and the lid member includes the first male fitting portion.
Has a second female fitting portion in a portion contacting the male fitting portion, and a second portion in a portion contacting the first female fitting portion.
A male fitting portion, the waterproof member is arranged between the housing case body and the lid member, and the first female fitting portion and the second male fitting portion are fitted together. Electronic control unit storage, characterized in that the storage case body and the lid member are joined by fitting the first male fitting portion and the second female fitting portion together. Case. 2. The first female fitting portion and the second male fitting portion, and the first male fitting portion and the second female fitting portion are respectively formed by fitting. The electronic control unit storage case according to claim 1, wherein stress is generated by the deformation.