JP6197188B2 - Louver device for electrical equipment storage box - Google Patents

Description

  The present invention relates to a louver device for an electrical equipment storage box.

  As shown in FIG. 7, as shown in FIG. 7, a sub-rubber cover 23 is fitted to the front opening of the louver mounting body 22 as a structure of a louver device provided for ventilating the inside of a housing box for electrical equipment installed outdoors. In addition, an outer louver cover 24 is attached to the front side of the sub-lubricator cover 23, and the outer louver cover 24 is provided with an outer blade portion 25 that is inclined upward toward the inside of the housing. Discloses a structure in which an inner blade portion 26 that is inclined downward toward the inside of the housing is provided (Patent Document 1).

  According to the said structure, the outer blade | wing part 25 can prevent the invasion of the water which flows from upper direction, and the inner blade | wing part 26 can prevent the invasion of the water of the jet stream at the time of a wind and rain or cabinet washing | cleaning. .

  However, even in the above structure, in strong winds, rainwater sprayed onto the surface of the sub-lubricator cover blades reaches the side wall portion of the sub-lubricator cover 23 along the surface of the inner blade portion 26 and travels along the side wall portion. There was a problem of entering into the housing.

JP 2006-332448 A

  The object of the present invention is to solve the above problems, and the outer louver cover is provided with blades inclined upward toward the cabinet side, and the sub-rover cover is provided with blades inclined downward toward the cabinet side. In the louver device for electrical equipment storage boxes, especially during strong winds, rainwater blown vigorously on the blades of the subrover cover reaches the side wall of the subrover cover through the surface of the blades and enters the case. It is to provide a technology that ensures the waterproof function.

The louver device for electrical equipment storage box of the present invention made to solve the above problems is directed upward toward the housing side on the louver cover covering the ventilation opening formed in the housing of the electrical equipment storage box. A louver device for an electrical equipment storage box comprising an outer wing portion inclined to the housing side and an inner wing portion inclined downward toward the housing side, the horizontal direction of water droplets sprayed on the surface of the inner wing portion A step is formed on the surface of the end portion of the inner blade portion as a horizontal flow inhibiting portion that hinders the flow in the direction and guides it to fall toward the drainage portion provided below the louver cover. Is.

  According to a second aspect of the present invention, in the louver device for an electric equipment storage box according to the first aspect, the horizontal flow blocking portions are provided at both left and right ends of the inner blade portion.

According to a third aspect of the invention, in the electrical equipment storage box louver device according to claim 1, the step portion, and is characterized in that it has formed in a groove shape.

The invention of claim 4, wherein, in the electrical equipment storage box louver device according to claim 1, the step portion, and is characterized in that it has a convex shape.

  In the louver device for an electrical equipment storage box according to the present invention, the wing portion of the louver is made to have a double structure of an outer wing portion and an inner wing portion, thereby improving the waterproof function. The louver cover is provided with a horizontal flow blocking portion that prevents the water droplets sprayed on the surface of the water from flowing in the horizontal direction and guides the water droplet to drop toward the drainage portion provided below the louver cover. I am expecting. According to this configuration, even when rainwater is blown vigorously on the blades of the louver cover during a strong wind, the rainwater reaches the side wall portion through the surface of the blades and enters the housing. Can be reliably avoided.

It is a disassembled perspective view of the louver device for electrical equipment storage boxes. It is a perspective view of a sub lumber cover. It is AA sectional drawing of FIG. It is principal part explanatory drawing in other embodiment. It is principal part explanatory drawing in other embodiment. It is a perspective view of a sub lumber cover in other embodiments. It is a vertical sectional view of a conventional louver device for electrical equipment storage box.

  Preferred embodiments of the present invention are shown below.

(Embodiment 1)
As shown in FIG. 1, the louver device for an electric equipment storage box according to the present invention includes an outer louver cover 3 having an outer blade portion 2 that is inclined upward toward the housing 1 side of the electric equipment storage box, It has a double waterproof structure comprising a sub-rubber cover 5 having an inner blade portion 4 inclined downward toward the housing 1 side.

The sub-rubber cover 5 includes a cylindrical portion 7 fitted from the outside of the casing 1 into a ventilation opening 6 formed in the casing 1 of the electrical equipment storage box, and a screw portion formed on the outer surface of the cylindrical portion 7. 8, and with the tube portion 7 fitted in the ventilation opening 6 , a ring-shaped fastening screw 9 is screwed into the screw portion 8 to be fixed to the housing 1. The shape of the louver device is not limited to a round shape, but may be a square shape. Further, the outer louver cover 3 and the sub louver cover 5 may not be formed as a two-member structure, and both the outer wing portion 2 and the inner wing portion 4 may be formed on a louver cover made of one member.

  As shown in FIG. 2, the inner blade portion 4 is formed in a base portion 13 that is continuous with the cylindrical portion 7, and has an inclined surface 10 that is inclined downward toward the housing 1 side, and a lower side of the inclined surface 10. It has an extending surface 11 extending substantially vertically downward, and has a structure in which water droplets sprayed from the outside are received by the inclined surface 10 and dropped along the extending surface 11. Below the base portion 13, a discharge portion 12 that discharges water droplets dropped along the extended surface 11 to the outside of the sub-rubber cover 5 is formed.

  Since the inner blade portion 4 is connected to the side wall portion 14 located on the inner periphery of the base portion 13, water droplets sprayed vigorously on the surface of the inner blade portion 4 during the strong winds are provided on the inclined surface 10 and the extended surface. Although the case where it reaches the side wall part 14 along the surface of the surface 11 and penetrates into the housing 1 through the side wall part 14 is also assumed, in this embodiment, as shown in FIGS. In addition, the horizontal flow of the inner blade portion 4 is prevented as a horizontal flow blocking portion that prevents the water droplets sprayed on the surface from flowing in the horizontal direction and guides the water droplets to fall toward the drainage portion 12 before reaching the side wall portion 14. Groove-shaped step portions 15 are formed at both ends. The water droplets that are prevented from flowing in the left-right direction by the groove-shaped step portion 15 fall toward the drainage portion 12 below due to their own weight, and thus avoid the intrusion into the housing 1 as described above. be able to. Further, the groove-shaped step portion 15 can be formed in the vicinity of the left and right ends of the inner blade portion 4 in addition to the left and right ends of the inner blade portion 4.

  In the present embodiment, a vertical stepped portion 17 having corners 16 extending in the vertical direction is formed at the end of the groove-shaped stepped portion 15 to make it easier to drop water drops downward. The water droplets that have reached the vertical stepped portion 17 are dropped by the vertical stepped portion due to the surface tension.

  In the present embodiment, the base portion 13 and the cylindrical portion 7 are integrally formed, but the base portion 13 and the cylindrical portion 7 can also be configured as separate members. Further, the extended surface 11 may be any member that extends downward with the lower side of the inclined surface 10 facing downward, and the lower side of the inclined surface 10 faces substantially vertically downward as in the present embodiment. It is not limited to what was extended. Furthermore, the extended surface 11 may not be formed on the inner blade portion 4 and only the inclined surface 10 may be provided.

  The shape of the groove-shaped step portion 15 may be any shape as long as it prevents the flow of water droplets in the horizontal direction. In addition to the shape of the above embodiment, the angle and number of the corner portions 16 and the formation location may be changed as appropriate. It can also be set as the structure which does not have the part 16 but formed the step part in the curve shape. Further, even if the groove-shaped step portion 15 is formed on the inclined surface 10, the same effect can be obtained.

(Other embodiments)
In place of the groove-like step portion 15 of the first embodiment, a convex step portion 20 is formed at the end of the inner blade portion 4 as shown in FIG. 4, or as shown in FIG. Both the groove-shaped step portion 15 and the convex step portion 20 can be formed at the end of the blade portion 4. In any of the embodiments, the water droplets that are prevented from flowing in the left-right direction at the groove-shaped step portion 15 or the convex step portion 20 fall toward the drainage portion 12 below due to their own weight. Such intrusion into the housing 1 can be avoided.

  In the above embodiment, the step portions 15 and 20 that are horizontal flow inhibition portions are formed in the inner blade portion 4, but as shown in FIG. 6, the side wall groove portion 21 that is the horizontal flow inhibition portion is the side wall portion. It can also be formed in an arc shape along 14. In addition, instead of the side wall groove portion 21, a convex step portion can be formed in an arc shape, or can be formed together with the step portions 15 and 20 of the inner blade portion 4.

DESCRIPTION OF SYMBOLS 1 Housing | casing 2 Outer wing | blade part 3 Outer louver cover 4 Inner wing | blade part 5 Sub louver cover 6 Ventilation opening part 7 Cylinder part 8 Screw part 9 Tightening screw 10 Inclined surface 11 Extension surface 12 Discharge part 13 Base part 14 Side wall part 15 Grooved step portion 16 Corner portion 17 Vertical step portion 20 Convex step portion 21 Side wall groove portion 22 Louver attachment body 23 Subrover cover 24 Outer louver cover 25 Outer blade portion 26 Inner blade portion

Claims (4)

On the louver cover that covers the ventilation opening formed in the housing of the electrical equipment storage box, the outer blade portion that is inclined upward toward the housing side, and the inner surface that is inclined downward toward the housing side A louver device for an electrical equipment storage box provided with a blade,
An end portion of the inner blade portion serving as a horizontal flow blocking portion that prevents the water droplets sprayed on the surface of the inner blade portion from flowing in the horizontal direction and guides the water droplet to drop toward the drainage portion provided below the louver cover. A louver device for an electrical equipment storage box , wherein a step portion is formed on the surface of the housing.   2. The louver device for an electric equipment storage box according to claim 1, wherein the horizontal flow blocking portions are provided at both left and right ends of the inner blade portion. The louver device for an electric equipment storage box according to claim 1, wherein the step portion is formed in a groove shape . 2. The louver device for an electric equipment storage box according to claim 1, wherein the step portion is formed in a convex shape .

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