JP2000294966A - Louver for chassis of electrical equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a louver capable of facilitating removable of a cover and reducing the depth of a frame. SOLUTION: Engaging recesses 4 are formed at the inner surfaces of one of the pairs of opposing frame plate parts, forming a rectangular frame 2 of a louver body 1. Side plate parts 6 and 6, to be fitted with the inner surfaces of the counterposing frame plate parts, are provided on the rear side of a cover 5 that covers the front surface of the body 1. Clearances s is provided between both end edges of the parts 6 and 6 and the other pair of opposing frame plate parts of the body 1. Engaging projections 7 are formed on the side plate parts 6 and 6, with each projection 7 having a circumferential surface 7a thereof tapered toward the tip.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a louver for an electric equipment housing for ventilating an electric equipment housing mainly containing electric equipment, electronic equipment and the like.

[0002]

2. Description of the Related Art A louver for a housing of an electric device is designed so that the cover can be removed from a louver main body for cleaning a cover and replacing a filter member disposed inside the cover. Therefore, as shown in FIG. 5, a conventional louver for a housing of an electric device has a locking recess 25a on the outer surface of a base end in upper and lower frame plates 24, 24 in a louver body 23 attached to an opening 22 of a housing 21. The locking claws 25, 25 are stretched,
A cover 26 that covers the front surface of the louver body 23 is provided with projections 29, 29 that fit into the locking recesses 25a on the inner surfaces of upper and lower frame plates 28, 28 of a peripheral frame 27 that is stretched rearward of the peripheral edge. The plate portion 28 is provided with a finger insertion hole 30 for operating a locking claw.

However, in order to remove the cover 26 from the louver main body 23, a finger is inserted from a finger insertion hole 30 and the tip of the locking claw 25 is pressed to remove the cover 26 from the louver main body 23. Locking concave portion 25a of stopper 25 and projection 29
Is released and the lower end of the cover 26 is pulled forward. Therefore, in order to easily raise the locking claw 25 with a finger, the locking claw 25 needs to be enlarged to some extent, and a finger insertion hole 30 large enough for the finger to sufficiently engage with the locking claw 25 is required. The finger insertion hole 3
It is inevitable to increase the depth of the peripheral frame portion 27 of the cover 26 provided, and the cover 26 has to protrude from the housing 21 and have to have a distance to another adjacent housing or wall.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems and to provide a louver for a housing of an electric equipment which can easily remove a cover and can reduce the depth of a peripheral frame portion of the cover. It was done in.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention is directed to an engaging recess or an engaging protrusion provided on the inner surface of one opposed frame plate of a rectangular frame of a louver body. And a side plate attached to the inner surface of the opposing frame plate at the rear side of the cover that covers the front surface of the louver main body, at least one end edge of both end edges of the side plate, A gap is provided between an edge and one of the other opposing frame plate portions of the louver main body corresponding to the engaging ridge portion, the side plate portion engaging with the engaging concave portion or the engaging convex portion. Alternatively, an engaging recess is provided. Further, the cover is slid in the gap direction into a gap provided between at least one end edge of both end edges of the side plate portion of the cover and the other opposite frame plate portion of the louver body corresponding to the one end portion. It is preferable to provide a guide portion that pushes the cover forward when moved.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a preferred embodiment of the present invention will be described with reference to FIGS. Reference numeral 1 denotes a louver main body in which a flange portion 3 is stretched outside the front peripheral edge of a rectangular frame-shaped frame portion 2. One of the frame portions 2 of the louver main body 1 is an opposite frame plate portion, that is, a left and right frame plate portion 2 a, On the inner surface of 2a, two engaging recesses 4 are provided so as to face each other vertically. Reference numeral 5 denotes a cover for covering the front surface of the louver main body 1;
The engaging recess 4 is fitted to one of the opposite frame plate portions of the louver main body 1 stretched on the rear side, that is, the side plate portions 6, 6 of which the outer surfaces are attached to the inner surfaces of the left and right frame plate portions 2 a, 2 a. An engaging projection 7 having a peripheral surface 7a to be formed into a tapered inclined surface protrudes. In the illustrated embodiment, the engaging projection 7 has a truncated conical shape with a low height, but may have a flat hemispherical shape. Further, both end edges of the side plate portions 6 and 6 and the other opposing frame plate portions of the louver main body 1, that is, the upper and lower frame plate portions 2.
A gap s larger than the vertical width of the engaging concave portion 4 is provided between b and 2b. This gap s may be provided only at one end of the side plate portion 6.

In this embodiment, the side plate portion 6 of the cover 5 is formed by opposing left and right side plate portions 6 of a rectangular frame-shaped filter holder 9 projecting to the rear side of the back surface of the cover 5. A gap s is formed between the side plate portions 6a, 6a and the other facing frame plate portion of the louver main body 1, that is, the upper and lower frame plate portions 2b, 2b.

Further, a gap s provided between one of the both end edges of the side plates 6, 6 of the cover 5, ie, the upper end edge, and the other facing frame plate, ie, the upper and lower frame plates 2b of the louver body 1, is provided. Is provided with a guide portion 8 for pushing the cover 5 forward when the cover 5 is slid in the gap direction. This guide 8
Are inclined guide surfaces 8 on the outer sides of both ends of the side plates 6, 6 of the cover 5, that is, on the outer sides of the upper and lower side plates 6 a, 6 a of the filter holder 9.
a, the leading edge of the other facing frame plate portion of the louver main body 1, that is, the upper and lower frame plate portions 2b, 2b faces the inclined guide surface 8a. The guide portion 8 has an inclined guide surface 8a.
May be provided on the upper and lower frame plates 2b and 2b of the louver body 1, or may be provided on both the upper and lower plate portions 6a and 6a and the upper and lower frame plates 2b and 2b of the louver body 1. What is essential is that the cover 5 be exactly pushed forward. In the case where the gap s is provided only on one edge of the side plate portion 6, the guide portion 8 is of course provided only on one side.

With the above-described structure, the rectangular frame portion 2 of the louver body 1 is fitted into the opening 22 provided through the housing 21 of the electric equipment, and the flange portion 3 is attached to the peripheral front surface of the opening 22. The louver main body 1 is fixed to the louver main body 1 by a means such as contacting the mounting claw provided on the outer surface of the frame portion 2 with the peripheral rear surface of the opening 22.
Is attached to the electrical equipment housing 21 and then the louver body 1
Mounting the filter 10 in the rectangular frame portion 2 and covering the front surface of the louver body 1 with the cover 5 is the same as the conventional louver for a housing for electric equipment.

However, the feature of the present invention lies in the attachment of the cover 5 to the louver body 1. That is, the cover 5 that covers the front surface of the louver main body 1 does not come off from the louver main body 1 because the engaging projection 7 is fitted into the engaging concave section 4, but the cleaning of the cover 5 and the filter 10 When it is necessary to remove the cover 5 from the louver main body 1 for replacement of the louver main body 1, as described above, the both end edges of the side plate portions 6, 6 and the other opposing frame plate portions of the louver main body 1, that is, the upper and lower frame plate portions 2b, a gap s wider than the vertical width of the engaging concave portion 4 is provided between the engaging convex portion 7 and the peripheral surface portion 7.
a is formed on a tapered inclined surface, so that when the cover 5 is pressed upward or downward in the gap s direction, the engaging projection 7
The cover 5 can be easily removed from the louver body 1 because the inclined surface of the peripheral surface portion 7a formed on the tapered inclined surface exceeds the edge of the engaging concave portion 4 and the engaging convex portion 7 comes off from the engaging concave portion 4. You can do it. The engaging recess and the engaging protrusion are provided on the frame plate portion of the louver body 1 in the opposite manner to the above embodiment, and the engaging recess fitted with the engaging protrusion is covered by the cover 5. May be provided on the side plate portion. Further, if the engaging concave portion is formed on an inclined surface having a center portion deeper than the end portion, the engaging convex portion may be a normal projection having a tapered inclined surface on the peripheral surface portion. When the gap s is provided only on one edge side of the side plate portion 6, the cover 5 is pressed only in the direction of the one edge side. When the flange portion 3 of the louver body 1 is surrounded by the portion 5a, a gap is provided between the upper and lower frame portions of the peripheral frame portion 5a and the upper and lower ends of the flange portion 3 so that the cover 5 can slide. Of course.

Further, the cover 5 is provided in a gap s provided between both end edges of the side plates 6, 6 of the cover 5 and the other facing frame plates of the louver body 1, ie, the upper and lower frame plates 2b, 2b. If the guide portion 8 is provided to push the cover 5 forward when the side plate portion 6 is slid in the gap s direction, when the cover 5 is pressed upward or downward, the engaging convex portion 7 is engaged with the engaging concave portion. 4, the cover 5 is pushed forward as shown in FIG. 4 through the course shown in FIG. 3, and a space for inserting a finger inside the peripheral surface of the cover 5 is formed. Can be removed.

Further, the louver for an electric equipment housing according to the present invention has a frame plate portion 2a of the frame portion 2 of the louver main body 1 in which the side plates 6, 6 of the cover 5 are fitted into the openings 22 provided through the housing 21. ,
2a, it is not necessary to dispose the tip side of the side plate portion 6 outside the opening 22. Further, as described above, the engagement between the engagement convex portion 7 and the engagement concave portion 4 is not necessary. The cover 5 can be released by pressing the cover 5 upward or downward with the upper and lower end surfaces of the cover 5, thereby eliminating the need for a space for finger hanging on the cover 5, reducing the thickness of the cover 5, and minimizing the protrusion from the outer surface of the housing 21. Therefore, the ventilation space for intake and exhaust at the front of the louver is increased, and the distance to other adjacent housings, wall surfaces, and the like can be reduced accordingly, and the housing installation space can be saved. Furthermore, the thinness of the cover increases the sense of unity with the housing, and can improve the design.

[0013]

As described above, the louver for a housing of an electric device according to the present invention not only allows the cover to be easily removed, but also enables the cover to be made thinner. Therefore,
This is a great benefit to the industry as a solution to the problem of the conventional louvers for electrical equipment housings.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing an embodiment of the present invention.

FIGS. 2A and 2B are explanatory views showing an embodiment of the present invention, in which FIG. 2A is a longitudinal sectional view, and FIG.

3A and 3B are explanatory views showing an embodiment of the present invention, wherein FIG. 3A is a longitudinal sectional view, and FIG. 3B is a transverse section of a main part.

FIGS. 4A and 4B are explanatory views showing an embodiment of the present invention, in which FIG. 4A is a longitudinal sectional view, and FIG.

FIG. 5 is a longitudinal sectional view showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Louver main body 2 Frame plate part 4 Engagement concave part 5 Cover 6 Side plate part 7 Engagement convex part 7a Peripheral surface part formed in the taper inclined surface 8 Guide part

Claims (2)

[Claims] 1. A square frame (2) of a louver body (1).
An engaging concave portion or an engaging convex portion is provided on the inner surface of one of the opposed frame plate portions, and the inner surface of the opposed frame plate portion is provided on the rear side of a cover (5) that covers the front surface of the louver body (1). The side plate parts (6), (6) to be attached to the louver body (1) corresponding to at least one of both end edges of the side plate parts (6), (6) and the one end edge A gap is provided between one of the other facing frame plate portions, and the side plate portion (6) is provided with an engagement protrusion or an engagement recess to be fitted with the engagement recess or the engagement protrusion. A louver for an electric device housing. 2. The louver body (1) having at least one of the side edges of the side plates (6) and (6) of the cover (5) and the other facing frame plate of the louver body (1) corresponding to the one edge. A guide portion (8) for pushing the cover (5) forward when the cover (5) is slid in the gap direction in the gap provided between the cover and the cover.
A louver for an electric device housing according to item 1.