JPH11195883A - Waterproof-cover structure of electronic component - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a waterproof-cover structure for electronic component, which can perform hinge coupling of a lower cover and an upper cover so that they are freely opened and closed without using coupling parts other than the cover, and can improve coupling workability of the covers. SOLUTION: Both ends of a plurality of supporting shafts 14A, 14B and 14C, which are separately provided in parallel with a back-wall outer surface 13 of a lower cover 11 are molded of resin as a unitary body with the lower cover 11 through a supporting part 15 at the back-wall outer surface 13 of the lower cover 11. Further-more, at a back-wall outer surface 16 of an upper cover 12, at least two arcuate bearings 17A and 17C, which are in contact with the surrounding surfaces of the supporting shafts 14A and 14B when the upper cover 12 is attached to the lower cover 11, and an arcuate shaft pushing part 18 in contact with the surrounding surface of the other supporting shaft 14B are molded of resin integrally with the upper cover 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waterproof cover comprising a lower cover for mounting electronic parts for vehicles such as an engine control module and an upper cover, and more particularly to a waterproof cover comprising the lower cover and the upper cover. The present invention relates to a waterproof cover structure for electronic components, which can be hingedly opened and closed without using the above-mentioned connecting parts, and which can improve the connecting workability.

[0002]

2. Description of the Related Art An electronic component waterproof cover which is installed in a space called an air box formed between an engine room of an automobile and a passenger compartment and is used for waterproofing electronic components such as a vehicle computer. As a prior example, there is a structure as shown in FIG. That is, the waterproof cover of the electronic component or the like as a prior example includes a resin lower cover 1 having an open upper surface and a resin upper cover 2 having an open lower surface. The detailed structure of the lower cover 1 is as follows. The inside is formed in a storage portion 1A for storing electronic components and the like (electronic devices and the like) (not shown), and a cylindrical portion 1B for ventilation having a vertical axis is formed in the storage portion 1A.

Further, on the rear surface of the lower cover 1, bearings 1C for inserting and holding a shaft pin 3 for coupling the upper cover 2 are provided on the left and right sides. In addition, locking claw pieces 1D for keeping the upper cover 2 closed are formed at a plurality of places on the side opposite to the back surface where the bearing 1C is provided. 1E is a grommet for drawing a wire harness (not shown) drawn from an electronic component (not shown) to the outside of the cover, and 1F is an air box formed between the engine room and the vehicle compartment of the vehicle body with the lower cover 1. 1 shows a bracket for fixing to a vehicle body in a space referred to as "a".

The structure of the upper cover 2 is such that a peripheral wall edge of the lower cover 1 is in contact with a peripheral wall edge 2A through a waterproof packing 4.
Further, bearings 2B for inserting and maintaining the shaft pins 3 are provided on the left and right sides on the back side of the peripheral wall edge 2A, and a plurality of side faces opposite to the back face on which the bearings 2B are provided. Are formed with a plurality of locking frames 2C for locking with the above-mentioned locking claw pieces 1D to keep the upper cover 2 and the lower cover 1 closed. 2D is a grommet guide hole for holding the grommet 1E in cooperation with the lower cover 1; Indicates a hole.

The lower cover 1 and the upper cover 2
In order to freely open and close the shaft pins 3, the shaft pins 3 are inserted into the bearings 1 </ b> C and 2 </ b> B provided on the lower cover 1 and the upper cover 2.
The nut 5 is screwed into the male screw portion 3A engraved at the tip of the lower cover 1 to maintain the connection between the lower cover 1 and the upper cover 2.

[0006]

However, the use of the shaft pin 3 and the nut 5, which are separate members, as means for connecting the lower cover 1 and the upper cover 2 as described above, requires that the lower cover 1 and the upper cover 2 be connected to each other. The number of used parts required for connection is increased, which complicates the parts management, and furthermore, it takes time and labor during the assembling work, resulting in poor workability. In addition, there is a problem that the product cost increases.

The present invention has been made in view of such a conventional problem, and has a structure in which the lower cover and the upper cover are pivotally supported so as to be openable and closable without using parts other than the lower cover and the upper cover. So that both covers can be joined together,
The first object is to increase ease of parts management and economic efficiency.

In the present invention, the lower cover and the upper cover can be pivotally connected with one touch.
A second object is to enhance the workability of joining the lower cover and the upper cover.

[0009]

In order to achieve the first object, according to the present invention, a lower cover made of a resin having an open upper surface and a lower surface of the lower cover opened with a waterproof packing interposed therebetween. In a waterproof cover comprising a resin upper cover, on the outer surface of the back wall of the lower cover,
Supports both ends of a plurality of support shafts which are spaced parallel to the outer surface of the back wall of the lower cover 11 and whose axes are aligned on an axis parallel to the opening surface of the lower cover and the outer surface of the back wall. The upper cover is formed of resin integrally with the lower cover via a portion, and the outer peripheral surface of at least two support shafts provided on the lower cover when the upper cover is attached to the lower cover. At least two arc-shaped bearings abutting on the shaft and an arc-shaped shaft retainer abutting on the peripheral surface of the other support shaft are resin-molded integrally with the upper cover, and the bearing and the shaft retainer cooperate with each other. The opening width of the support shaft fitting groove formed by this is a waterproof cover structure for electronic components formed to be slightly smaller than the diameter of the support shaft.

According to a second aspect of the present invention, in addition to the first aspect, both end surfaces of the shaft retainer formed on the upper cover support the support shaft formed on the lower cover. And a waterproof cover structure for electronic components formed on a guide surface guided between opposing surfaces of the pair of supporting portions.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail based on an embodiment shown in the drawings.

Reference numeral 11 denotes a resin lower cover for storing electronic components and the like (not shown), and reference numeral 12 denotes a resin upper cover corresponding to the lower cover, excluding hinge portions of the lower cover 11 and the upper cover 12. The outer shape is almost the same as the outer shape shown in FIG. 5 described as a prior example. The lower cover 11 has an upper surface opened, the upper cover 12 has a lower surface opened, and the two covers 11 and 12 are opened. Has a structure in which the waterproof packing 22 is provided in a watertight manner with a waterproof packing 22 interposed therebetween.

The rear cover outer surface 13 of the lower cover 11 has a plurality of gaps (A) from the rear wall outer surface 13 so that a thick portion of a bearing and a shaft retainer to be described later can pass smoothly. Spindles 14A, 14B, 14C)
Are formed, and these support shafts 14A, 14B,
Both ends of 14C are resin-molded integrally with the lower cover 11 by respective support portions 15 expended from the back wall outer surface 13.

The axes of the support shafts 14A, 14B and 14C are arranged in parallel with the opening surface of the lower cover 11 and the outer surface 13 of the back wall so as to coincide with the axis (X). The cross-sectional shape of 14 is formed in a center circle centered on the axis (X).

On the outer surface 16 of the back wall of the upper cover 12,
Bearings 17A and 17B which are expended in the back direction from the back wall outer surface 16 and correspond to the support shafts 14A and 14C, and the shaft retainer 1 corresponding to the support shaft 14B.
8 is resin-molded integrally with the upper cover 12. The upper and lower positions of both bearings 17A and 17B are such that, when the upper cover 12 is placed on the lower cover 11, the upper surfaces 19 of the bearings 17A and 17B
A and 14C are set so as to be in contact with the lower peripheral surface, and the vertical position of the shaft retainer 18 is such that when the upper cover 12 is put on the lower cover 11, the shaft retainer 1
8 is positioned so that the downward surface 20 is in contact with the upper peripheral surface of the support shaft 14B.

Further, the upper surface 19 of the bearings 17A, 17B and the lower surface 20 of the shaft retainer 18 are connected to the support shafts 14A,
14B and 14C are formed in an arc having the same curvature as the curvature of the bearings 17A and 17B and the shaft retainer 18.
When viewed from the side, the opening width (r) of the support shaft insertion groove 21 formed by the bearings 17A and 17B and the shaft retainer 18 in cooperation with each other is larger than the diameter (R) of the support shafts 14A to 14C. It is set a little smaller.

Further, both right and left end surfaces of the shaft retainer 18 are supported by both side support portions 15, 1 for supporting both ends of the support shaft 14B.
5 is formed on a guide surface 23 which is guided between the shafts 5, and the shaft retainer 18 is provided on both side supporting portions 1 supporting the support shaft 14B.
By inserting the lower cover 11 and the upper cover 12, the lower cover 11 and the upper cover 12 are positioned in the horizontal direction (the direction of the axis X). Also, the shaft holder 18
As a means for making it easy to fit between the support portions on both sides, the guide surfaces 23 of the shaft retainer 18 are formed as inclined surfaces (tapered surfaces) tapering toward the front end thereof, and the guide surfaces are formed. It is advantageous to form a corner between 23 and the leading edge in a radius.

The above is the present embodiment. Next, the attachment of the lower cover 11 and the upper cover 12 will be described. The upper wall having an opening facing upward is provided on the back wall of the lower cover 11 in which electronic components and the like are stored. After the back walls of the cover 12 are opposed to each other (see FIG. 3), the back walls of the covers 11 and 12 are brought close to each other, and the bearings 17A and 17B provided on the upper cover 12 are connected to the support shafts 14A and 1 of the lower cover 11.
4C and the upper cover 1
The shaft retainer 18 provided on the shaft 2 is positioned immediately below the support shaft 14B, that is, between the support portions 15 on both sides of the support shaft 14B.

At this time, since the left and right guide surfaces 23 formed on the shaft retainer 18 are supported on the inner surface of the support portion 15 provided on the support shaft 14B, the shaft retainer 18 is moved. Both support portions 1 supporting the support shaft 14B
By the operation of inserting the lower cover 11 and the upper cover 12, the horizontal positioning of the lower cover 11 and the upper cover 12 is inevitably performed.

In the form of the spindle fitting groove 21 formed cooperatively by the bearings 17A and 17B and the shaft holder 18, the opening of the spindle fitting groove 21 is formed as shown in FIG. Since the width (r) is set slightly smaller than the diameter (R) of the support shafts 14A to 14C, the support shaft fitting groove 2 is provided.
When the support shafts 14A to 14C are inserted into the shaft 1, a sense of moderation is generated when the support shafts pass through the openings of the support shaft fitting grooves, whereby the lower cover 11 and the upper cover 12 are Are also positioned and hinged.

In this way, the lower cover 11 and the upper cover 12 that are pivotally supported with each other are turned 180 degrees about the pivot portion so that the waterproof cover 22 is interposed between the openings of the lower cover 11 and the upper cover. 12 is provided to provide waterproof and dustproof protection for the electronic components.

As described above, according to the present embodiment, a pair of support shafts 14A, 14B and 14C are formed on the lower cover 11,
Since the upper cover 12 is formed integrally with the bearings 17A and 17B and the shaft presser 18 which are positioned so as to sandwich the support shaft, both the lower cover 11 and the upper cover 12 are covered during the assembly work. Can be connected to the regular position with one touch, whereby the workability of assembling the lower cover 11 and the upper cover 12 is greatly improved. Further, since the lower cover and the upper cover 12 can be assembled without using any mounting parts other than the cover, members such as shaft pins and nuts which have been conventionally used are not required, thereby increasing the economy. .

[0023]

As described above, according to the waterproof cover structure of the present invention, there is an effect that the workability of assembling the lower cover 11 and the upper cover 12 and the economy at the time of assembling are greatly improved.

[Brief description of the drawings]

FIG. 1 is a side view showing an embodiment of a waterproof cover structure according to the present invention.

FIG. 2 is a perspective view of a main part showing hinge portions of an upper cover and a lower cover having a waterproof cover structure according to the present invention.

FIG. 3 is a plan view of a main part showing hinge portions of an upper cover and a lower cover having a waterproof cover structure according to the present invention.

FIG. 4 is an enlarged sectional view of a main part showing a state where an upper cover and a lower cover having a waterproof cover structure according to the present invention are joined.

FIG. 5 is an exploded perspective view showing a conventional waterproof cover structure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 ... Lower cover 12 ... Upper cover 13 ... Back wall outer surface 14A, 14B, 14C ... Support shaft 15 ... Support part 16 ... Back wall outer surface 17A, 17B ... Bearing 18 ... Shaft retainer 19 ... Upside surface 20 ... Downside surface 21: Support shaft fitting groove 22: Waterproof packing 23: Guide surface

Continued on the front page (72) Inventor Norio Takaku 2-1910 Nisshincho, Omiya City, Saitama Prefecture Kansei Co., Ltd. (72) Inventor Yoshihiro Nakajima 2 Takaracho, Kanagawa-ku, Yokohama-shi, Kanagawa Nissan Motor Co., Ltd. (72) Inventor Masayuki Miyamoto Nissan Motor Co., Ltd. 2 Takaracho, Kanagawa-ku, Yokohama-shi, Kanagawa

Claims (2)

[Claims] 1. A resin lower cover (1) having an open upper surface.
1) and a resin upper cover (12) having a lower surface opened and covered with the waterproof packing (22) with the waterproof packing (22) interposed therebetween, wherein the outer surface (13) of the back wall of the lower cover (11) is provided. ), The axis of the lower cover (11) is parallel to the back wall outer surface (13) and is parallel to the opening surface of the lower cover and the back wall outer surface. Both ends of the plurality of shafts (14A), (14B) and (14C) to be matched are resin-molded integrally with the lower cover (11) via the support portion (15), and the back wall of the upper cover (12). Outer side (1
6) includes a lower cover (1) of the upper cover (12).
At the time of attachment to (1), at least two arc-shaped bearings (17A) and (17A) which are in contact with the peripheral surfaces of at least two support shafts (14A) and (14C) provided on the lower cover (11). 17B) and an arc-shaped shaft retainer (18) to be in contact with the peripheral surface of the support shaft (14B) are resin-molded integrally with the upper cover (12), and are further formed with the bearings (17A) and (17B). The opening width (r) of the support shaft fitting groove (21) formed in cooperation with the shaft retainer (18) is formed slightly smaller than the diameter (R) of the support shafts (14A) to (14C). A waterproof cover structure for an electronic component. 2. A pair of support portions (15) for supporting both ends (14B) formed on the lower cover (11) with both end surfaces of a shaft retainer (18) formed on the upper cover (12). The waterproof cover structure for an electronic component according to claim 1, wherein the waterproof cover structure is formed on a guide surface (23) guided between the opposing surfaces of (1).