JPH0564005B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a dew condensation prevention cover used for arranging a wall-embedded wiring device.

[Background technology]

Conventionally, a wall-embedded wiring device is attached to a mounting bracket and fixed directly to an opening in a wall, or is fixed to a wiring box arranged in an opening in a wall.

However, when wiring devices are installed in this way, there is a problem that moisture from behind the wall can enter the wiring device and form condensation, or condensation that has formed outside the wiring device can travel through the wiring and enter the device. . If condensation forms inside the wiring equipment, it may cause damage to the wiring equipment or electrical accidents such as short circuits.

[Purpose of the invention]

This invention was made to solve these problems, and aims to provide a cover that can prevent condensation on wiring devices and that can be easily installed regardless of the thickness of the wall. The purpose is

[Disclosure of the invention]

In order to achieve the above object, the present invention provides a cover that is placed in an opening provided in a wall and closes the back side of a wiring device placed in the opening,
The main body has a storage section in which the wiring equipment is stored, and an outward flange provided at the opening of the storage section,
A fixture is installed on the side of the main body to sandwich the edge of the opening in the wall between it and the flange so that the distance between the flange and the flange can be changed. There is a hole for
The attachment has a protrusion that protrudes laterally on both sides of the base, and protrusions having a hook-shaped cross section that engage the protrusions are provided on both sides of the main body in a direction from the opening of the storage section toward the bottom. The gist of this is the anti-condensation cover that runs along the line. This invention will be explained in detail below.

What is shown by 1 in FIG. 1 and also shown in FIG. 2 is an embodiment of the dew condensation prevention cover according to the present invention. This condensation prevention cover 1 is
The main body 3 is made entirely of an elastic material such as rubber, except for the reinforcing material 2, and a fixture (scissors fixture) 4 is made of a hard material such as metal. Main body 3
, a storage section 6 into which the wiring device 5 is inserted, and an outward flange 7 provided at the front opening of the storage section 6.
have. A cylindrical body 6a is fixed to the bottom surface of the accommodating part 6, and a hole in the cylindrical body 6a is connected to a hole passing through the bottom wall of the accommodating part 6 to form a wiring insertion hole 8. The diameter of this wiring insertion hole 8 is slightly smaller than the diameter of the wiring. On both sides of the storage section 6,
Two protrusions 9 each having a hook-shaped cross section are provided on both sides along the direction from the opening of the storage portion 6 toward the bottom, with the hook-shaped tips facing each other. A reinforcing member 2 made of a hard material such as metal and bent into a hook shape on both sides is embedded in the side wall of the storage portion 6 and its protrusions 9, 9. A protrusion 10 is provided on the back side of the flange 7 along the edge and around the entire circumference. Screw insertion holes 7a are provided on both sides of the flange 7. The fixture 4 has one protrusion 4a that protrudes laterally on each side of the base, and has a screw hole 4b in the middle. The fixture 4 is attached to both sides of the storage section 6 so that the protrusions 4a, 4a are engaged with the hook shapes 9, 9, and can be slid from the opening of the storage section 6 toward the bottom.

This dew condensation prevention cover is used, for example, in the following manner. Opening 1 provided in thin wall 11
The case where wiring equipment is installed in 1a will be explained. First, cover the wiring placed on the back side of the thin wall 11.
into the wiring insertion hole 8, and insert the tip into the wiring device 5.
Connect to. The remaining wiring insertion holes 8 through which the wiring does not pass are covered by, for example, putting a lid on the tip of the cylindrical body 6a. Wire insertion holes 8 may be provided in advance for the number of wires. Next, the fixture 4 is removed, the housing portion 6 of the cover is inserted into the opening 11a, and the flange 7 is placed against the edge of the opening 11a. The wiring device 5 is attached to the mounting frame 12, and the wiring device 5 is stored in the housing part 6 of the cover, and both ends of the mounting frame 12 are placed on the upper surface of the flange 7.
The protrusions 4a, 4a of the fixture 4 are engaged with the protrusions 9, 9. Then, pass the screw 13 through the screw insertion hole 12a provided on the side of the mounting frame 12, the screw insertion hole 7a of the flange, and the notch 11b provided at the edge of the wall opening 11a, and then hole 4
Screw into b. A hole may be made in the wall 11 instead of the notch 11b, or an opening 11a may be provided in the wall 11.
Depending on the size of the opening 11a, the screw 13 may be passed through the opening 11a without providing the notch 11b or hole. When the screws 13 are tightened, the edge of the opening 11a is sandwiched between the mounting frame 12, the flange 7, and the fixture 4, and the cover 1 is attached to the wall 11 together with the fixture 12.
Fixed. Finally, the plate 14 is fixed to the mounting frame 12 with screws 15 so as to expose the front side of the wiring device 5.

In this way, when the condensation prevention cover according to the present invention is used to cover the back side of the wiring device and close the opening in the wall, and the wire is passed through the wiring insertion hole in which the packing is arranged, the back side of the wall Since little moisture reaches the wiring fixtures, there is little chance of condensation forming on the wiring fixtures. Also,
The cover is equipped with a fixture on the side that can change the distance from the flange, and the cover is fixed by sandwiching the edge of the wall opening between the flange and the fixture, so airtightness is not compromised. This allows for easy fixing regardless of wall thickness.

FIG. 3 shows another embodiment of the condensation prevention cover according to the present invention. This anti-condensation cover is
It includes a main body 16 and a fixture 4 made of a hard material such as metal or hard plastic. This main body 16 has a storage section 17 in which wiring devices are stored.
An outward flange 18 is provided at the front opening of the storage section 17. As shown in FIG. 4, the bottom wall of the storage portion 17 is provided with a wire insertion hole 17a into which a wire connected to a wiring device is inserted. A packing (wire insertion packing) 19 is arranged in the wiring insertion hole 17a.
The packing 19 is a tubular body made of an elastic material such as rubber, and has a groove 19a provided on the outer peripheral surface of one end. The inner diameter of the packing 19 is slightly smaller than the diameter of the wiring. Packing 19 is groove 19
a is fitted into and fixed to the edge of the wiring insertion hole 17a. Two protrusions 20 having a hook-shaped cross section are provided on both sides of the storage portion 17, respectively, along the direction from the opening of the storage portion 17 toward the bottom, with the hook-shaped ends facing each other. . A packing (waterproof packing) 21 is arranged on the edge of the flange 18. Packing 21
is made of an elastic material such as rubber. A protrusion 21b is provided over the entire circumference on the back side of the frame, which has an inward groove 21 on its inner peripheral surface and a U-shaped cross section. The packing 21 is fixed by fitting the edge of the flange 18 into the groove 21a. The structure of the fixture 4 is the same as that of the embodiments already described, and common numbers indicate the same parts.

This embodiment is also used for installing wiring devices in the same manner as the previous embodiment, and can obtain the same effects as the previous embodiment.

In both of the above two embodiments, a protrusion made of an elastic material is provided on the edge of the flange, so that the wiring device can be covered airtightly without using a sealant between the flange and the wall. I can do it. However, this protrusion is not necessarily required. In addition, in the installation example of the wiring device using the above embodiment, the cover and the mounting frame are fixed to the wall at the same time, but in cases where the flange is made of a hard material, etc., only the flange and the mounting hardware are required. The cover may be independently fixed to the wall by sandwiching the edge of the opening in the wall. The number of fixtures is not particularly limited. In the cover 1 shown in FIGS. 1 and 2, a reinforcing material is embedded in the protrusion, but this reinforcing material is not necessarily required. However, when the cover is made of an elastic material, if such a reinforcing material is provided, the cover 1
can be firmly fixed to the wall,
When will it be possible to cover the wiring equipment airtightly? The dew condensation prevention cover according to the present invention can also be used to prevent dust from flowing in and out through an opening in a wall.

〔Effect of the invention〕

The condensation prevention cover according to the present invention is a cover that is placed in an opening provided in a wall and closes the back side of a wiring device placed in the opening, and includes a storage section in which the wiring device is stored and an opening of the storage section. a main body having an outward facing flange provided at the flange; a fitting for sandwiching the edge of the wall opening between the main body and the flange is provided on the side of the main body so as to change the distance between the main body and the flange;
The wall of the main body is provided with a hole through which the wiring connected to the wiring device is passed through in an airtight manner. Since the protrusion with a hook-shaped cross section that locks the protrusion is provided along the direction from the opening of the storage section to the bottom, it is possible to prevent condensation on the wiring equipment and reduce the thickness of the wall. Regardless, installation is easy.

[Brief explanation of the drawing]

Figure 1 shows one of the dew condensation prevention covers according to the present invention.
Explanatory diagram for installing wiring equipment using an example, 2nd
The figure is a partially cutaway perspective view of the same wiring device, FIG. 3 is a partially cutaway perspective view of another embodiment of the condensation prevention cover according to the present invention, and FIG. 4 is the same. FIG. 7 is a longitudinal cross-sectional view of the vicinity of the wiring insertion hole in the bottom wall of the storage portion of the dew condensation prevention cover. 1... Condensation prevention cover 3, 16... Cover body 4... Mounting tool 5... Wiring equipment 6, 17...
...Storage part 7,18...Outward flange 8,1
7a...Wiring insertion hole 11...Wall 11a...
Opening 19... Patsuking.

Claims (1)

[Scope of Claims] 1. A cover that is placed in an opening provided in a wall and closes the back side of a wiring device placed in the opening,
The main body has a storage section in which the wiring equipment is stored, and an outward flange provided at the opening of the storage section,
A fixture is installed on the side of the main body to sandwich the edge of the opening in the wall between the flange and the flange so that the distance from the flange can be changed, and the wiring connected to the wiring device is passed through the wall of the main body in an airtight manner. The fitting has a protrusion that protrudes laterally on both sides of the base, and a protrusion with a hook-shaped cross section that locks the protrusion is provided on both sides of the main body. A condensation prevention cover installed along the direction from the opening to the bottom. 2. The dew condensation prevention cover according to claim 1, wherein the main body is made of an elastic material. 3. The dew condensation prevention cover according to claim 1, wherein the main body is made of a hard material, and the hole through which the wiring is passed is provided with packing made of an elastic material. 4. Claim 1, wherein the flange is provided with an elastic protrusion along the edge of the surface that is applied to the wall.
The dew condensation prevention cover described in any of Items 1 to 3.