JPH0127380Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a dew condensation prevention coating cover for wiring boxes, and is mainly used to prevent dew condensation inside various types of wiring boxes that are installed embedded in the framework of concrete buildings such as buildings. The present invention also relates to a paint allowance cover that can remove poor insulation within a wiring box and stains on interior wall surfaces caused by dew condensation.

Conventionally, in the case of concrete frames of building structures, especially concrete buildings such as buildings that are highly airtight, there is a very large temperature difference between the outer surface of the wall that is in contact with the cold outside air and the inner surface of the wall that is heated. Condensation occurred on the inner surfaces of the side walls and bottom walls of various wiring boxes that were embedded in the building blocks and exposed on the inner surfaces of the walls. This condensation can cause poor insulation and corrosion inside the wiring box, and stain the interior wall surface, which is especially noticeable in cold regions during the winter. be. Moreover, once condensation occurs, it is extremely troublesome to remove it, maintenance and inspection are not easy, and it is virtually impossible to effectively prevent condensation.

That is, as shown in Fig. 4, the wiring box B, such as an outlet box, which is embedded in the frame C during the construction of a concrete building, is directly embedded in the frame C in an exposed manner, so the outside is exposed to the outside air. On the other hand, the inside part is affected by the indoor temperature through the interior wall material W and the mounting frame T for the outlet, switch, and TV terminal. Therefore, in cold regions, the temperature is low on the outside of the side walls and bottom wall of wiring box B, and high on the inside, so moisture existing indoors adheres to the inside surfaces and forms a condensation state. This resulted in various inconveniences, such as:

Therefore, this idea was created in view of the above points, and in the opening part of the wiring box that is installed exposed and embedded in the building structure surface, there is no indirect air flow between the inner surface of the building structure and the back surface of the interior wall material. By eliminating the intrusion of cold air convection, which is affected by the electrical convection, and creating an atmosphere with approximately the same temperature inside and outside the wiring box, we have succeeded in effectively preventing dew condensation.

That is, this invention forms a plate that is provided with a cylindrical frame portion in which a wiring insertion opening is opened, and that is attached to a wiring box opening in order to cover the opening of a predetermined embedded type wiring box that is buried in the body surface. , a cylindrical cover tube made of a soft material whose opening edge presses against the back surface of the interior wall material disposed in front of the frame surface is connected to the tube frame portion, and an incisable cover tube that closes the wire insertion opening It consists in installing an occlusion membrane made of soft material,
An embodiment of this invention will be described below with reference to FIGS. 1 to 3.

Reference numeral 1 shown in the figure is a coating allowance cover according to this invention, which is fixed to the interior wall material W placed in front of the C surface of the building frame.
A predetermined outlet box, which is embedded in the surface of the building body C and has a cylindrical frame part 5 in which a wiring insertion opening 6 is opened for passing the cable K to the TV terminal;
A plate 2 is formed to be attached to the opening of a wiring box B to cover the opening of an embedded wiring box B such as a switch box. Then, a cylindrical cover tube 9 made of a soft material whose opening edge presses against the back surface of the interior wall material W is connected to the tube frame portion 5, and a soft material that can be cut to close the wiring insertion opening 6 is connected to the tube frame portion 5. A occlusion membrane 11 made of

The plate 2 itself is almost the same as that conventionally used, and is covered with a soft material such as polyvinyl chloride resin molded into a predetermined shape. It is obtained by covering the cover part 7 on the peripheral edge of the frame part 5 and the covering part 8 that almost covers the entire cylinder frame part 5, and is thus integrated with the plate 2 through the covering part 8. By doing so, the cover tube 9 can be connected to the tube frame portion 5. Furthermore, since the cover part 7 is covered with the covering part 8, when the cover part 7 is fixed to the wiring box B using the screw holes 3 and the fixing screws 4 drilled in the cover part 7, the cover part 7 is covered with the covering part 8. The mounting portion 8 closes even the slightest gap at the opening edge of the wiring box B,
Helps prevent cold air from entering.

The cover tube 9 substantially matches the opening shape of the tube frame portion 5, and is formed to be slightly longer than the distance from the open end of the tube frame portion 5 to the back surface of the interior wall material W, and its opening edge is shaped as shown in the figure. The abutment edge 10 is expanded outwardly to improve adhesion when abutting against the back surface of the interior wall material W and prevent cold air from entering.

The occluding membrane 11 is connected to the cable K in the wiring box B.
The cover tube 9 or It is formed integrally with the covering portion 8 and extends over the wiring insertion opening 6 .

13 in the figure is a decorative cover F that is attached to the mounting frame T in which the outlet, switch, and TV terminal are installed.
This is a screw hole formed in the cylindrical frame portion 5 into which a set screw 14 is screwed.

Further, 15 is a heat insulation cover, which is formed of a heat insulating material in a substantially box shape so as to cover the outside of the side wall and bottom wall of the wiring box B, as shown in FIG.
By setting wiring box B at the same time as wiring box B when burying it in building body C, there is no influence on the inside of wiring box B by the cold air from the outside, especially the outside of building body C, and it is possible to bring about an even greater effect in preventing dew condensation. be.

This device is constructed as described above, and when used, as shown in FIGS. Connect it to a wiring material P such as a directly buried cable, embed it in a concrete body C, and fix it as appropriate, and then fix the invented coating allowance cover 1 to the wiring box B with the fixing screws 4. I'll keep it. After that, an interior wall material W having a laminated structure made of a hard urethane resin material and a gypsum board material is set so that the open end of the cover tube 9 is expanded preferably outward, and this interior wall material W is The mounting frame T and the decorative cover F in which the outlet, switch, TV terminal, etc. are assembled are screwed into the mounting opening O opened at
A predetermined connection is made with the cable K inserted through the insertion gap 12 obtained by cutting the.

Therefore, when installed in the opening of the wiring box B, the cover tube 9 is attached to the main body C and the interior wall material W.
Since the convection of cold air that occurs in the gaps between the wiring boxes is prevented from entering the wiring box B, there is no large temperature difference between the inside and outside of the side walls and bottom walls of the wiring box B, resulting in a similar atmosphere. No dew condensation occurs, and poor insulation and staining of the surface of the interior wall material W can be reliably prevented.

In addition, by providing a cylindrical frame portion 5 with a wiring insertion opening 6 and forming a plate 2 to be attached to the wiring box B opening to cover the wiring box B opening, it can be used and fixed in the same manner as before. This can be done without causing any inconvenience to the work. In addition, a cover tube 9 made of a cylindrical soft material whose opening edge presses against the back surface of the interior wall material W disposed toward the front of the surface C of the building frame.
is connected to the cylinder frame part 5, so this cover cylinder 9
This is extremely effective in preventing the convection of cold air generated in the gap between the building frame C and the interior wall material W from entering into the cover tube 9 and further into the wiring box B. In addition, even if there is a slight change in the gap between the frame C and the interior wall material W, it can be accommodated, and the opening edge of the cover tube 9 is securely pressed against the back surface of the interior wall material W, and the cover tube 9 Intrusion of cold air into the inside is always prevented, and no large temperature changes occur inside the cover tube 9.

Furthermore, since the closing membrane 11 stretched to close the wiring insertion opening 6 of the cylindrical frame portion 5 almost closes the opening of the wiring box B, it is possible to pass through the mounting opening O of the interior wall material W, the mounting frame T, etc. This is effective in preventing indoor warm air from entering the wiring box B, and is effective in removing moisture that causes condensation.
Moreover, since the occlusion membrane 11 itself is made of a soft material that can be cut open, there is no problem in connecting the cable K to the outlet, switch, TV terminal, etc. inside or outside the wiring box B through the wiring insertion opening 6. figure,
Workability is also very good.

As explained above, according to this invention, by blocking the cold air convection at the opening of the wiring box that is installed embedded in the structure, the inside of the wiring box is completely unaffected by the cold air outside the structure. As a result, the occurrence of dew condensation inside the box is reliably prevented, and as a result, accidents such as poor insulation inside the wiring box and staining of interior wall materials are reliably eliminated, making it ideal for use in cold regions. It has various excellent effects such as being able to be used for a long time.

[Brief explanation of the drawing]

Figures 1 to 3 show an embodiment of this invention. Figure 1 is a schematic explanatory diagram of the device in use, Figure 2 is a partially cutaway side view of the same, and Figure 3 shows the combination with a wiring box. FIG. 4 is a partially cutaway side view of the conventional example. B... Wiring box, C... Body, F... Decorative cover, K... Cable, N... Knock out,
O...Mounting port, P...Wiring material, T...Mounting frame,
W... Interior wall material, 1... Paint allowance cover, 2... Plate, 3... Screw fixing hole, 4... Fixing screw, 5...
... Cylinder frame part, 6 ... Wiring insertion opening, 7 ... Cover part, 8 ... Covering part, 9 ... Covering tube, 10 ... Contact edge, 11 ... Closure membrane, 12 ... Insertion gap, 13...
...Screw hole, 14...Set screw, 15...Heat insulation cover.

Claims (1)

[Scope of utility model registration request] Equipped with a cylindrical frame part with a wiring insertion opening,
Forms a plate that is attached to the wiring box opening in order to cover the opening of a predetermined recessed wiring box buried in the building structure surface, and presses the opening edge against the back of the interior wall material placed in front of the building structure surface. A dew condensation prevention device for a wiring box, characterized in that a cylindrical covering tube made of a soft material is connected to the cylinder frame, and a cuttable membrane made of a soft material that closes the wiring insertion opening is stretched. Paint allowance cover.