JP3351884B2 - Fireproof cover for wiring equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technique for simplifying fire resistance of a wiring device mounted on a construction surface such as a wall.

[0002]

2. Description of the Related Art Conventionally, a wiring device such as a switch or an outlet is mounted on an opening of a mounting frame mounted on a construction surface such as a wall, thereby installing the wiring device on a construction surface such as a wall. I have. In some cases, a plurality of wiring devices are installed at the same location using a mounting frame formed so that a plurality of wiring devices can be mounted in the opening.
On the other hand, there is a hole in the wall to which the mounting frame is attached,
The power line and the like led out of the hole are connected to the wiring equipment. However, in the event of a fire, there is a danger that the flame or smoke will move to another room through the hole and spread the fire. . Usually, the above-mentioned danger can be avoided because the hole is closed by a wiring device attached to the mounting frame. However, for example, when only a smaller number of wiring devices than the number that can be mounted are mounted on the mounting frame corresponding to a plurality of wiring devices, there is an opening where no wiring device is mounted on the mounting frame. Therefore, there is a problem that the danger of the spread of fire as described above cannot be avoided.

[0003]

In order to solve the above problem, a flat refractory chip provided with a locking claw for engaging a locking hole provided in a mounting frame for mounting a wiring device is made of a metal material. The opening is formed by engaging a locking claw with the locking hole corresponding to the opening of the mounting frame to which the wiring device is not mounted as described above, and attaching the fireproof chip to the mounting frame. A simple fireproof structure in which a portion is closed has been proposed (JP-A-3-143212).
Reference).

However, since the above-mentioned refractory tip is formed in a flat plate shape, it requires a locking claw to be attached to the mounting frame, and furthermore, it is necessary to remove the locking claw engaged with the locking hole. Has to be performed with a tool such as a screwdriver, and there is a problem that the operation of removing the refractory tip is troublesome. The present invention has been made in view of the above problems, and an object of the present invention is to provide a fireproof cover for a wiring device that can be easily attached and detached.

[0005]

According to a first aspect of the present invention, there is provided an apparatus having an opening for mounting a wiring device, wherein two opposing side pieces are suspended substantially perpendicularly to the opening. Te attached to an opening portion of the mounting frame comprising providing a locking hole engaging claws obtained by projecting the side surface of the wiring devices to the side pieces, a metal plate having a fire resistance of the mounting frame the two Each of the side pieces has two side walls opposed to each other, and is formed in a substantially box shape corresponding to one size module of the wiring device.
The dowels to be fitted are provided on the side wall .

[0006]

[0007]

[0008]

According to the construction of the first aspect of the present invention, there is provided an opening for attaching a wiring device, and two opposing side pieces are suspended substantially perpendicularly to the opening, and the side pieces protrude from the side surface of the wiring device. Metal plate attached to an opening of a mounting frame provided with a locking hole for engaging with the locking claw
With two side walls respectively facing the two side pieces of the mounting frame to accommodate one dimension module of the wiring device
To be installed in the box on the side of the mounting frame.
Since the dowels fitted into northern locking hole provided in the side wall, only fitting the refractory cover the opening of the mounting frame in can be easily mounted, moreover, can also be performed easily detached, also, the entire The strength is improved by forming a substantially box shape
And a hook provided on the side piece of the mounting frame.
The dowels that fit into the stop holes are provided on the side walls.
By fitting into the locking holes provided in the side pieces of the frame,
The fire cover can be installed in place on the mounting frame.
And a fireproof cover made of a metal plate,
While having sufficient fire resistance, it is shall can be easily processed.

[0009]

[0010]

[0011]

Embodiments of the present invention will be described below with reference to the drawings. FIGS. 1 to 7 show an example of a piano handle switch in which a switch 3 corresponding to one size module is used as a wiring device and is operated by a piano handle. Also, as shown in FIG.
Has a rectangular shape having an opening 2 and is configured to correspond to ready-made dimensions standardized by a metal material. Two side pieces 1a, 1a along the longitudinal direction of the mounting frame 1 are bent so as to hang down substantially perpendicularly to the opening 2. Further, a locking hole 1 for engaging a locking claw 3a protruding from a side surface of the switch 3 as a wiring device is formed in the side piece 1a.
b ... are provided in plurality. In this embodiment, a total of three sets of locking holes 1b are provided, each including four sets of two pieces on each side piece 1a, 1a so that three wiring devices can be mounted on the mounting frame 1 as a whole. ... is provided.

The switch 3 as a wiring device is mounted on the mounting frame 1 having the above-described configuration in an arbitrary set of locking holes 1b among a plurality (a plurality of sets) of locking holes 1b. . In this case, as shown in FIG. 3, the engagement claws 3a projecting from both sides of the switch 3 are engaged with the locking holes 1b. And
For example, as shown in FIG. 1, the switches 3 and 3 are respectively fitted into portions other than the center of the opening 2 of the mounting frame 1 so that the switches 3 are respectively inserted into two of the three sets of locking holes 1b. , 3 are attached, the opening 2 is open at the center between the two switches 3, 3,
The fireproof cover 4 is fitted into the open portion, and the fireproof cover 4 is attached to the mounting frame 1. Here, the refractory cover 4 is made of metal such as stainless steel and does not melt or burn due to heat. As shown in FIG. 4, the periphery of the flat plate portion 4a of the metal plate is bent to form four side walls. 4b... Are formed in a substantially box shape, and their dimensions correspond to one dimension module of the wiring device. Of the side walls 4b of the refractory cover 4, the refractory cover 4
Are provided in parallel on a pair of side walls 4b, 4b opposed to each other in the longitudinal direction, and two dowels 4c fitted in the locking holes 1b are respectively arranged in parallel, and these dowels 4c are locked as shown in FIGS. The fireproof cover 4 can be positioned by being fitted into the hole 1b. When mounted on the mounting frame 1, the side walls 4b of the fireproof cover 4 are opposed to the side pieces 1a of the mounting frame 1 and the side surfaces of the switch 3, respectively. In this way, the opening 2 of the mounting frame 1 is closed by the switch 3 as a wiring device and the fireproof cover 4 as shown in FIG. As shown, when mounted on a construction surface 11 such as a wall, a metal mounting frame 1 is provided.
In addition, the switch 3 for closing the opening 2 and the fireproof cover 4 provide fire resistance. Also, when the fireproof cover 4 is removed, it can be easily removed without using a tool such as a screwdriver.

Further, a plate frame 5 is mounted on the front side of the mounting frame 1, and a metal fireproof panel 6 and a decorative frame 7 are mounted on the plate frame 5. That is, by attaching the metal fireproof panel 6 to the back surface side of the plate frame 5, the gap between the mounting frame 1 and the plate frame 5 can be shielded to achieve fire resistance. Then, a piano handle 8 is fitted into the switch 3 attached to the mounting frame 1, and a claw 9 provided on a locking leg at one end of the piano handle 8 is attached to one end of the upper surface of the switch 3 as shown in FIG. The claw 12 provided on the locking leg at the other end of the piano handle 8 is vertically movably inserted into a groove provided at the other end of the upper surface of the switch 3. When the piano handle 8 is pressed, the push button handle 14 of the switch 3 is pressed, and the contact of the switch 3 is switched. It has become.

In this embodiment, the case where only one fireproof cover 4 is mounted on the mounting frame 1 has been described. Of course, two or more fireproof covers 4 can be mounted. It is not necessary that three devices can be attached, and only one or two devices can be attached, or three or more devices can be attached. In addition, the fireproof cover 4 may be formed of a fireproof resin other than metal. If the fireproof resin 4 is formed by resin molding, the fireproof cover 4 can be easily manufactured. In addition, the manufacturing cost of the fireproof cover 4 can be reduced.

[0015]

According to the first aspect of the present invention, there is provided an opening for attaching a wiring device, and two opposing side pieces are suspended substantially perpendicularly to the opening, and the side pieces protrude from the side surface of the wiring device. Attached to the opening of the mounting frame provided with a locking hole for engaging the locking claw ,
The two side pieces of the mounting frame have two side walls opposed to each other, and correspond to one size module of the wiring device .
Formed in a substantially box shape and provided on the side piece of the mounting frame.
Dowels that fit into the locking holes are provided on the side walls, so they can be easily installed simply by fitting a fireproof cover into the opening of the mounting frame, and can be easily removed without using tools such as a screwdriver. The installation work of wiring equipment can be simplified, and the whole is formed in a substantially box shape.
Can be increased, and the side piece of the mounting frame
The dowels that fit into the locking holes provided in
Fitting the dowels into the locking holes provided in the side pieces of the mounting frame
Attach the fireproof cover in place on the mounting frame
To make the installation of the fireproof cover easier.
And fire-resistant cover made of metal plate
So it can be easily processed while having sufficient fire resistance
There is an effect that can Ru.

[0016]

[0017]

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of an entire wiring device in an embodiment.

FIG. 2 is a sectional view of a mounting frame used in the embodiment.

FIG. 3 is a cross-sectional view showing a state where a switch is mounted on a mounting frame in the same.

FIG. 4 shows the same as the above, where (a) is a plan view,
(B) is a side sectional view, and (c) is a front view.

FIG. 5 is a side cross-sectional view showing a state where the vehicle is mounted on the construction surface of the above.

FIG. 6 is a front cross-sectional view showing a state where the display device is attached to the construction surface of the above.

FIG. 7 is a cross-sectional view showing a mounting portion of a switch used in the above switch for attaching a piano handle.

[Explanation of symbols]

 Reference Signs List 1 mounting frame 1a side piece 1b locking hole 2 opening 3 switch 4 fireproof cover 4b side wall 4c dowel

Claims (1)

(57) [Claims] 1. A locking claw having an opening for mounting a wiring device and having two opposing side pieces suspended substantially perpendicularly to the opening, and engaging with a locking claw protruding from a side surface of the wiring device. attached to an opening portion of the mounting frame comprising providing a locking hole for engagement, the second mounting frame by a metal plate having a fire resistance
Each side piece has two opposing side walls, each of which is formed in a substantially box shape corresponding to one dimension module of a wiring device.
At the same time, it fits into the locking hole provided on the side piece of the mounting frame.
A fireproof cover for a wiring device, wherein a dowel is provided on a side wall .