JPS62173909A - Packing for embedded wiring appliance - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a packing that houses an embedded wiring device and is used by being embedded in indoor building materials to prevent air leakage.

[Background technology]

The current method of installing embedded wiring devices is to attach the embedded wiring device to a hole made in construction material, and then attach a plate to the front of the embedded wiring device to hide the hole. Therefore, when there is a difference between indoor and outdoor temperatures due to seasonal changes, air moves through the holes provided in the building materials, allowing condensation to occur and dust to enter.

To prevent this, for example, as shown in Figure 4 (al,
(A packing (electrical protection cover) for embedded wiring devices as shown in BL was considered.

As shown in FIGS. 4(a) and 4(b), this embedded wiring device packing 1 includes a box body 2, a collar body 3, and a cylindrical body 4, respectively. The box body 2 is configured to house embedded wiring devices such as an outlet and a switch therein. The collar body 3 is formed integrally with the box body 2. The cylindrical body 4 is provided at the bottom of the box body 2, projects inward from the back surface thereof, and has a thin walled portion 7 formed inside thereof to block communication between the inside and outside of the box body. This packing 1 for an embedded wiring device is installed so that the collar body 3 is in contact with the construction material, and a thin wall portion 7 is provided on the cylindrical body 4 for inserting electric wires, so that gas leakage is prevented. By the way, in a construction method in which an embedded wiring device is attached to construction materials without using a packing for the embedded wiring device, it is possible to do without an embedded box such as a switch box. Figure 5 (a), (bl
An example of a construction method without an embedded box is shown below. As shown in Figure 5 (a) and (b), the VUF cable, VV
A wiring device 5 to which an electric wire 8 such as an F cable is connected is attached to a mounting frame 15, and a construction material 16 is sandwiched between the mounting frame 15 and scissors 18, and the mounting is done by tightening with screws 13. . A plate 9 is attached to the attachment frame 15. 19 is a gap between the wiring device 5 and the plate 9.

However, the embedded wiring device packing 1 shown in FIGS. 4(a) and 4(b) is not designed to lock the scissors, so it cannot be installed without an embedded box.

[Purpose of the invention]

In view of the above, an object of the present invention is to provide a packing for an embedded wiring device that can be installed without an embedded box.

[Disclosure of the invention]

In order to achieve the above object, the present invention provides a box body configured to house an embedded wiring device therein, a flange body integrally formed with the box body, and a bottom portion of the box body. Each box is provided with a cylindrical body that is provided so as to protrude inward from the back surface and has a thin-walled part formed on the inside that blocks communication between the inside and outside of the box body, and the flange body is located between the plate and the construction material. A pair of scissors for an embedded wiring device is embedded in a hole provided in the construction material to prevent gas from leaking from the hole, and the scissors are adapted to sandwich the construction material with the collar body. The gist is a packing for an embedded wiring device, which has a hole for inserting and locking a metal fitting, and the hole is covered with a thin part.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIGS. 1(a) to 1(C) show an embodiment of a packing (electrical protection cover) for an embedded wiring device according to the present invention. FIG. 2 shows an example of the installation condition. Figure 3 shows a part of the installation.

As shown in FIGS. 1(al to (C)), FIGS. 2 and 3, this embedded wiring device packing 1 includes a box body 2, a collar body 3,
, and a cylindrical body 4.

The box body 2 is configured to house an embedded wiring device 5 such as an outlet or a switch inside.

The collar body 3 includes a reinforcing plate 6. The reinforcing plate 6 is also
It also serves to maintain adhesion to the surface of the construction material 16. Reinforcement plate 6
A metal body such as an iron plate is used for this purpose. Box body 2 and collar body 3
For example, it is integrally formed by molding thermoplastic resin, rubber, or the like. Note that the box body 2 and the collar body 3 may be molded separately and then integrally formed using an adhesive or the like.

The box body 2 is provided with a cylindrical body 4 that protrudes and communicates with its back surface 2a and interior 2b. The inside of the cylindrical body 4 serves as a hole for inserting an electric wire, and a thin walled portion 7 is formed inside the cylindrical body 4 to close communication between the inside and the outside. The cylindrical body 4 is arranged to face the position of a terminal hole (not shown) of the wiring device 5 to be housed, and can prevent external force from being applied to the packing 1 by the electric wire 8. In addition, the dimensions of the cylinder 4 cannot be made too short as this will affect the sealing properties, but by shortening the dimensions that protrude from the back surface 2a of the box 2, the electric wire 8
is inserted to prevent the cylindrical body 4 from falling over when the thin wall portion 7 is broken through. Cylinder 4 is box 2
The longer the dimension that projects into the interior 2b, the better the airtightness will be. The collar body 3 has a reinforcing plate 6 insert-molded therein to prevent deformation, and is formed in a size that matches the back surface 9a of the plate 9. If the end surface 10 of the collar body 3 is an inclined surface as shown in the figure, it is possible to prevent dust from accumulating on this surface. Reference numeral 11 denotes a mounting frame 15 on which the wiring device 5 is attached.
This is the insertion hole for the screw 13 for attaching the. If this screw insertion hole 11 is also formed with a thin wall portion 14 that closes the hole,
Less gas leakage (possible).

On both sides of the screw insertion hole 11, holes 20 are provided for inserting and locking the scissors 18 (holes for fixing the scissors). The hole 20 for fixing scissors has a wide portion 20a and a narrow portion 20b. Wiring equipment 5
When installing without using the scissors 18, such as by attaching it to an embedded box (not shown) and embedding it in construction materials, if there is a hole 20 for fixing the scissors, air will move through this hole. It is preferable that the hole 20 for fixing the scissor fittings is provided with a thin wall portion 21 to close it.

If the thin part 21 has a thickness of, for example, about 1■■ and can be easily pierced, air will not leak when it is attached without using the scissors 18, and the scissors 1
8, the scissors 18 can be inserted by breaking through the thin wall portion 21.

The scissor metal fittings 18 have a pressing part 18a corresponding to the construction material 16,
It is provided with an insertion hole 18b into which the screw 13 is screwed, and a hook portion 18c which is inserted into and locked into the hole 20 for fixing the scissors. The tip of the hook portion 18c is bent into an L-shape, and the bent portion is caught and locked.

Next, the procedure for construction will be explained. first,
VUF cable, VVF cable, etc.
, and pierce through the thin wall portion 7 to connect to the wiring device 5. The hook part 18C of the scissors fitting 18 is inserted through the wide part 20a of the hole 20 for fixing the scissors fittings through the thin part 21, and the bent part of the hook part 18c is brought out above the hole 20. Then, when the hook portion 18c is moved to the narrow portion 20b of the hole 20, the bent portion of the hook portion 18c becomes the narrow portion 20b.
The scissors 18 is caught on the edge of the scissors 18. At this time, it is preferable that the screw insertion hole 11 and the screw insertion hole 18b face each other. The edge of the hole 17 in the construction material 16 such as a wall is interposed between the collar body 3 and the pressing part 18a of the scissor fitting 18, and the screw 13 is inserted into the mounting frame work 5 on which the wiring device 5 is attached.
Screw insertion hole (not shown), packing screw insertion hole 1
1. Screw the scissors 18 into the screw insertion holes 18b in this order, and sandwich the construction material 16 between the collar body 3 and the scissors 18. A plate 9 is attached to the mounting frame 15.

In this way, the mounting frame 15 with the wiring device 5 mounted thereon is embedded in the hole 17 provided in the building material 16 via the embedded wiring device packing 1 and attached to the building material 16. The hole 17 in which the wiring device 5 for embedding is provided in the construction material 16 in this way
When it is embedded in the construction material and attached to the construction material, the flange body 3 that is in contact with the construction material 16, the thin wall part 7 that closes the cylinder body 4, and the screw insertion hole 1 are removed.
The thin wall portion 14 that closes the hole 1 and the thin wall portion 21 that closes the hole 20 for fixing scissors prevent gas such as air from moving through the hole 17 provided in the building material 16. Further, the thin wall portion 7 penetrated by the electric wire 8 wraps around the electric wire 8 and fills the gap, thereby preventing the movement of gas. The thin wall portion 14 penetrated by the screw 13 wraps around the screw 13 and fills the gap, thereby preventing the movement of gas. The thin wall portion 21 penetrated by the scissors 18 wraps around the scissors 18 and fills the gap, thereby preventing the movement of gas.

Furthermore, the mounting frame 15 may be screwed directly to the construction material 16 via the packing l for embedded wiring devices, or it may be attached to the embedded box 12 via the packing 1 as shown in FIG. Good too. Furthermore, in order to further improve airtightness, the flange body 3, the thin wall portion 7, the thin wall portion 14, and the thin wall portion 21
Glue can be used to.

Note that this invention is not limited to the above embodiments.

Conventionally, embedded wiring devices are shown in FIG. 10 (al, (
It was attached to construction materials as shown in b). That is, as shown in FIG. 10(b), an electric wire 8 such as a VUF cable or a VVF cable is connected to the embedded wiring device 5, and the mounting frame 15 on which the wiring device 5 is attached is screwed. 13 to an embedded box 12 such as a switch box, and a plate 9 is attached to this mounting frame 15. If this is done, air will move through the holes 17, causing dew condensation and entry of dust, which is inconvenient for clean rooms, depressurized rooms, and the like.

Therefore, it has been considered to embed the wiring device into the hole in the construction material via a packing for the embedded wiring device.

Fig. 4 (al) and (b) show an example of such a packing for an embedded wiring device.As seen in Fig. 4 (al) and (bl), this packing 1 for an embedded wiring device is Tsuba body 3
The end face (part A) of was composed of an edge (corner).

For this reason, as shown in FIG. 9, when the plate 9 is attached, there is a drawback that the appearance is poor.

Furthermore, when used in a clean room, part B has the disadvantage of easily accumulating dust and dirt, impairing cleanliness.

Therefore, we devised a packaging for embedded wiring devices that has a shape that makes it more aesthetically pleasing when the plate is attached, and that prevents dust from accumulating.

That is, Fig. 6, Fig. 7 (al, (bl and Fig. 8)
This is a packing for embedded wiring devices as shown in the figure. As shown in Figures 6 to 8, this embedded wiring device packing 1
A box body 2 that accommodates an embedded wiring device 5 inside, a collar body 3 formed integrally with this box body 2, and a bottom portion of the box body 2 from the back surface 2a to the inside 2b. Each cylinder body 4 is provided so as to protrude from the outside of the box body 2 and has a thin wall portion 7 formed therein to block communication between the inside and outside of the box body 2. It is embedded in a hole 17 provided in the construction material 16 so as to prevent gas from leaking from the hole 17, and the end surface 10 of the flange body 3 extends from the surface 3a over the entire circumference. It has a tapered shape that becomes larger toward the back surface 3b. Therefore, it is possible to prevent dust from accumulating on the end surface 10 of the flange body 3, and when used in a clean room or the like, there is no need for cleaning such as removing debris. Further, on the surface 3a, a rib 2 for positioning the plate 9 is provided.
3 is provided. Therefore, the positioning of the plate 9 can be easily performed, and the external appearance can be improved. This rib 23
are not limited to four locations as shown in the figure, but may be provided at one or more locations.

The packing 1 for an embedded wiring device shown in FIGS. 6 to 8 is the same as that shown in FIGS. The same as shown in FIGS. 1(a) to (C) except that the lip 23 is provided, and the hole 20 for fixing the scissor fittings does not necessarily have to be provided. Since the installation and condition are the same, the same numbers and symbols will be given to the same parts and the explanation will be omitted. If there is no hole 20 for fixing the scissors, they may be attached to the embedded box 12 as shown in FIG.

First, the electric wire 8 is inserted into the cylindrical body 4, penetrates the thin wall portion 7, and is connected to the wiring device 5. Then, attach the mounting frame 15 with the wiring device 5 attached to the embedded box 12 such as a switch box by screwing the screw 13 through the screw insertion hole 11 of the packing l.
and attach the plate 9 to this mounting frame 15. At this time, the flange body 3 is interposed between the mounting frame 15 and the plate 9, and the construction material 16. In this way, construction material 1
6, the thin wall portion 7 that closes the cylindrical body 4, and the thin wall portion 14 that closes the screw insertion hole 11 prevent gas such as air from moving through the hole 17 provided in the construction material 16. There is. Further, the thin wall portion 7 penetrated by the electric wire 8 wraps around the electric wire 8 and fills the gap, thereby preventing the movement of gas.

Further, the mounting frame 15 may be screwed directly to the construction material 16, or may be attached to the construction material 16 by sandwiching the construction material 16 with scissors 18, as shown in FIG. Furthermore, in order to further improve airtightness, the flange body 3,
An adhesive can be used for the thin portion 7, the thin portion 14, and the like.

24 is a conduit tube through which cables such as VUF cables and VVF cables, power lines, etc. are passed.

〔Effect of the invention〕

As described above, the packing for embedded wiring devices according to the present invention is embedded in a hole provided in a construction material to prevent gas from leaking from the hole, and the packing material for an embedded wiring device is made of a construction material with a collar body. It is equipped with a hole for inserting and locking the scissor metal fittings that are designed to be held in place, and this hole is covered with a thin wall to prevent the movement of gas through the hole in the construction material. It can prevent the occurrence of dew and the intrusion of dust, and can be fixed to construction materials with scissors, so construction can be done without an embedded box.

[Brief explanation of drawings]

FIGS. 1(a) to (C1) show an embodiment of the packing for embedded wiring devices according to the present invention, FIG. 1(a) is a plan view, and FIG. 1(b) is a partially sectional side view. , Fig. 1(C) is another partially sectional side view, Fig. 2 is a partially sectional side view showing an example of how the packing for embedded wiring device is installed, and Fig. 3 is its installation. Figure 4 is an exploded perspective view showing a part of the condition.
Figures (a) and (b) show an example of a conventional packing for embedded wiring devices. Figure 4 (a) is a plan view, and Figure 4 (b) is a top view.
is a side view, Figures 5(a) and (b) show the state in which the wiring device is installed without an embedded box, and Figure 5(a) is a side view.
is a partial plan view, Fig. 5(b) is a partial side view, and Fig. 6 is a partial plan view.
The figure is a plan view of the packing for the embedded wiring device, Fig. 7(a),
(b) is a partially sectional side view of the same, FIG. 8 is a partially sectional side view showing an example of its installation state, and FIG. 9 is a partially sectional side view showing the end shape of the flange body. Figure 10 (al,
(bl shows the state in which the wiring equipment is attached to the embedded box, Fig. 10 (a) is a partial plan view, Fig. 10 (
bl is a partially sectional side view. 1... Packaging for embedded wiring equipment 2... Box body 3.
...Brim body 4...Cylinder body 5...Wiring device 6...
Reinforcement plate 7... Thin wall part of cylinder body 9... Plate 1
6... Construction material 17... Hole made in construction material 18...
・Scissors metal fittings 20...Hole for fixing scissor metal fittings 21
... Thin wall part of the hole for fixing the scissor fittings Representative Patent Attorney Takehiko Matsumoto @ Figure 1 (C) Figure 2 @ Figure 3 Whistle 9 Figure 6 Figure 7 @ Figure 8 Figure 10

Claims (1)

[Claims] (1) A box body configured to house an embedded wiring device inside, a flange body formed integrally with the box body, and
The bottom of the box body is provided with a cylindrical body that protrudes inward from the back surface and has a thin-walled part formed on the inside that blocks communication between the inside and outside of the box body, and the flange body is connected to the plate and the construction material. A packing for an embedded wiring device that is embedded in a hole provided in the construction material to prevent gas from leaking from the hole so as to be located between the construction material and the flange. A packing for an embedded wiring device, characterized in that the packing has a hole for inserting and locking a scissor metal fitting, and the hole is covered with a thin-walled part.