JP2001054219A - Veneering frame and roof-space wiring method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate wiring installation, reduce installation lead time, installation cost, and material cost, prevent the appearance of a ceiling finish material from being spoiled, and facilitate confirmation and inspection works of connection states. SOLUTION: A veneering frame comprises a main part 1 and a cover 2. The main part 1 is a circular and annular unit, which has an inner hole 3 with fixed dimensions and can be fitted and attached to a through-hole formed in a ceiling finish material 4. The inner hole 3 of the main part 1 is closed by the cover 2. The ceiling finish material 4 is made from a plaster board, plywood board, etc., and the cover 2 is made of similar materials.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a decorative frame to be fitted into and attached to a through hole formed in a ceiling finishing material, and to a method of wiring an electric wire above and below a ceiling.

[0002]

2. Description of the Related Art For example, when newly installing a wiring device such as an outlet, a communication jack, a series unit for a television, and the like, by attaching it to an appropriate place of a ceiling finishing material, an electric wire of an electric device is converted into a ceiling finishing material. , And the installation method is often required on the indoor layout. However, apart from the installation work, the problem is wiring work. In order to attach the wiring device to the ceiling finishing material in a suitable place and newly install the wiring device, the exposed electric wire must be laid along the lower surface of the ceiling finishing material and connected to the wiring device, which is not easy. Time and labor are required, the construction period is long, and the construction cost is high. In the case of an exposed electric wire, it is required to cover and protect the cable with a protective cover, and there is also a problem that the material cost is high. Laying the exposed electric wire along the lower surface of the ceiling finishing material also causes a problem that the appearance of the ceiling finishing material is impaired. Furthermore, when a trouble occurs and the cause is investigated, the wiring device must be once removed in order to check and check the connection state of the wiring device, which is troublesome.

[0003] In addition, there is a case where a surveillance camera or a fire detector is required to be installed at an appropriate position of a ceiling finishing material and newly installed. In some cases, it is required to install various types of detectors such as infrared or hot-wire type security detectors, temperature detectors, humidity detectors, gas leak detectors, etc., at appropriate places in the ceiling finishing material and to newly install them. Further, there is a case where an alarm device such as a buzzer is required to be attached to an appropriate place of the ceiling finishing material and newly installed. However, exposed wires must be laid along the underside of the ceiling finish,
The work is not easy, the construction period is long, and the construction cost is high. In the case of an exposed electric wire, it is required to cover and protect the cable with a protective cover, which also has a problem of high material cost. Similarly, there is a problem that the appearance of the ceiling finishing material is impaired by the exposed electric wires. In order to check and check the connection status of the surveillance camera, fire detector, various detectors or alarms, the connection must be removed once, which is also troublesome.

[0004]

SUMMARY OF THE INVENTION Therefore, according to the present invention, when wiring devices, surveillance cameras, fire detectors, various detectors or alarms are installed at appropriate places on a ceiling finishing material, the wiring work is easy and the construction period is shortened. , Reduce the cost of construction, reduce the cost of materials, ensure that the appearance of the ceiling finish is not impaired, and make it easy to check and inspect the connection status It was made for the purpose of.

[0005]

The invention according to this application is three inventions. According to the first invention, a decorative frame having a special configuration is newly provided, the decorative frame includes a main body and a lid, and the main body is a circular or square ring-shaped body having an inner hole of a predetermined size. And
It can be fitted and attached to the through holes formed in the ceiling finishing material. The lid is for closing the inner hole of the main body. Further, a wiring device, a surveillance camera, a fire detector, various detectors or alarms are provided on the lid, and an electric wire above the ceiling is connected to the wiring device, the monitoring camera, the fire detector, various detectors or alarms.

According to the second aspect of the present invention, a round or square annular body having an inner hole of a predetermined size is used as a main body of the decorative frame. At a plurality of positions, the body of the decorative frame is fitted and attached to the through holes formed in the ceiling finishing material. Further, the worker's arm is passed through the inner hole of the main body and inserted into the space above the ceiling, whereby the electric wire above the ceiling is wired. afterwards,
The lid closes the inner bore of the body.

Further, according to the third aspect of the present invention, a decorative frame for wiring electric wires behind the ceiling is newly provided. The decorative frame includes a main body and a lid, and the main body is a circular or square ring. It has an inner hole of a certain size, and can be fitted and attached to a through hole formed in a ceiling finishing material. The lid is for closing the inner hole of the main body. Then, when wiring the wires behind the ceiling, the worker's arm is passed through the inner hole of the main body,
The cable is inserted into the ceiling and the electric wires behind the ceiling are wired.

[0008] In the third invention, the main body is a circular ring, the inner hole is circular, and the diameter is 80 to 300 m.
m is preferable.

[0009] In the third invention, the main body is a square annular shape, the inner hole is a square shape, and the length of one side is 80 to 80 mm.
It may be 300 mm.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a decorative frame according to the present invention. The decorative frame is composed of a main body 1 and a lid 2. The main body 1 is a circular ring-shaped body, has an inner hole 3 of a fixed size, and can be fitted and attached to a through hole formed in a ceiling finishing material 4. Then, the inner hole 3 of the main body 1 is closed by the lid 2. The ceiling finishing material 4 is made of a material such as gypsum board or plywood, and the lid 2 is made of a similar material.

Further, in this embodiment, FIGS. 2 and 3
As shown in FIG. 2, a body 1 composed of a flange 5 and a sleeve 6 is used, an inner hole 3 is formed in the sleeve 6, and the inner hole 3 is circular. Its diameter D1 is 80 ~
Preferably it is 300 mm. The optimal value is 125-2
00 mm. The flange 5 is provided around one end of the sleeve 6, extends in the radial direction of the sleeve 6, and has a width W of 15 to 20 × 2 mm. Therefore, the outer diameter D2 of the main body 1 is determined by the diameter D1 of the inner hole 3 and the width W of the flange 5, and the diameter D1 of the inner hole 3 is 80 to 300.
mm, the outer diameter D2 is 110 to 340 mm. When the diameter D1 of the inner diameter 3 is 125 to 200 mm, the outer diameter D2
Is 155 to 240 mm.

Further, as for the through holes of the ceiling finishing material 4, circular through holes are formed in the ceiling finishing material 4.
Its diameter is slightly larger than sleeve 6. further,
A pair of holders 7 are arranged at diametrically symmetric positions of the sleeve 6 and are fixed to the outer surfaces thereof. The holder 7 is for holding the claw 8 made of a leaf spring, is made of a channel material, and has an accommodation groove 9 for accommodating the claw 8. Therefore, the sleeve 6 can be fitted into the through hole of the ceiling finishing material 4, the flange 5 can be pressed against the lower surface of the ceiling finishing material 4, the claws 8 are inserted into the housing grooves 9 of the holder 7, and the housing grooves 9 can be inserted.
, And pressed against the upper surface of the ceiling finishing material 4,
The main body 1 can be attached by the claws 8 and the flange 5. The main body 1, holder 7 and claws 8 are made of metal or synthetic resin.

The nail 8 is a commonly used one, and its operation is easy. Knob 8 knob 1 by hand
When the pin 0 is pinched and flattened, the claw 8 can be inserted into the accommodating groove 9 of the holder 7, lowered along the accommodating groove 9, and pressed against the upper surface of the ceiling finishing material 4. Furthermore, when the knob 10 of the claw 8 is released after being pressed against the upper surface of the ceiling finishing material 4, the claw 8 is expanded by elasticity, and this is locked in the accommodation groove 9. Therefore, the main body 1 can be attached by the claws 8 and the flange 5. It is also possible to pinch the knob 10 of the claw 8 by hand, raise the claw 8 along the accommodation groove 9 of the holder 7, and remove the claw 8 from the accommodation groove 9.

On the other hand, the lid 2 is of a disk shape and is of a fitting type. The outer peripheral edge of the lid 2 is covered with an outer frame 11, and the lid 2 is supported or fixed to the outer frame 11.
Further, as shown in FIG. 4 and FIG.
2 are provided on the upper edge of the outer frame 11, each hook 12 is positioned at an angular position without the holder 7, and the lid 2 and the outer frame 11 are fitted into the inner hole 3 of the main body 1. The outer frame 11 is elastically deformed and contracted by the reaction force of the contact and is pressed against the inner peripheral surface of the sleeve 6, and the hook 12 slides along the inner peripheral surface of the sleeve 6. Therefore,
When each hook 12 exceeds the upper edge of the sleeve 6, the outer frame 11 is expanded by elasticity, and each hook 12
And the lid 2 is supported by the hook 12. Therefore, the inner hole 3 of the main body 1 can be closed by the lid 2. When the lid 2 is slightly pushed up, rotated about the diametric center line and erected, the lid 2 can be pulled down from the inner hole 3 of the main body 1 and removed, thereby opening the inner hole 3 of the main body 1. it can. The outer frame 11 is also made of metal or synthetic resin.

Further, in this embodiment, the outlet 13
Is equipped on the lid 2. The outlet 13 is an embedded type. A through groove is formed in the lid 2 and an outlet 13 is inserted into and embedded therein, and a mounting bracket 14 is provided.
The outlet 13 and the lid 2 are fixed by the screw 15 and the outlet 13, and the outlet 13 is exposed above and below the lid 2. On the upper side of the lid 2, an electric wire 16 behind the ceiling is connected to the outlet 13. further,
A plug 19 is provided on an electric wire 18 of an electric device 17.
3, and the electric wire 18 of the electric device 17 can be connected to the outlet 13 of the lid 2.

Here, the space above the ceiling is a space between the ceiling surface 20 of the space above the ceiling and the ceiling finishing material 4. Above the ceiling, many vertical bars 21 intersect with many horizontal bars 22,
In combination, this forms a double ceiling framing, which is hung by a number of suspension bolts 23, and the ceiling finish 4 is attached to the double ceiling framing. Further, various equipment such as an air-conditioning duct 24, an exhaust duct 25, and a water pipe 26 are arranged at appropriate locations above the ceiling.

In this decorative frame, when the outlet 13 is newly installed, a worker stands on a stepladder, and first, a through hole is formed in the ceiling finishing material 4. Then, on the stepladder,
The body 1 of the decorative frame is fitted into the through hole of the ceiling finishing material 4 and attached. In mounting the main body 1, the sleeve 6 is fitted into the through hole of the ceiling finishing material 4, and the flange 5 is pressed against the lower surface of the ceiling finishing material 4. Is inserted into the accommodation groove 9 of the holder 7, lowered along the accommodation groove 9, and pressed against the upper surface of the ceiling finishing material 4, whereby the main body 1 can be attached, and there is no problem.

Thereafter, on the stepladder, the electric wire 16 behind the ceiling is pulled out from the inner hole 3 of the main body 1. Further, on the stepladder or on the floor surface, the electric wire 16 is guided to the lid 2,
Connect to outlet 13. Further, thereafter, on the stepladder, the lid 2 is fitted into the inner hole 3 of the main body 1, and the inner hole 3 of the main body 1 is closed by the lid 2, so that the outlet 13 can be installed in a proper position of the ceiling finishing material 4. Therefore, after that, the electric wire 18 of the electric device 17 is connected to the ceiling finishing material 4.
Can be connected to the outlet 13.

Before closing the inner hole 3 of the main body 1 with the lid 2, instead of pulling out the electric wire 16 above the ceiling from the inner hole 3 of the main body 1, a new electric wire 16 is connected to the outlet 1 of the lid 2.
Connect to 3. Then, the electric wire 16 is inserted into the inner hole 3 of the main body 1.
, And inserted into the back of the ceiling, and the electric wire 16 may be wired behind the ceiling. After that, when the inner hole 3 of the main body 1 is closed by the lid 2, the outlet 13 can be installed at an appropriate position of the ceiling finishing material 4, and the electric wire 18 of the electric appliance 17 is connected to the outlet 13 of the ceiling finishing material 4. be able to.

Therefore, in the case of this decorative frame, the main body 1 is fitted into the through hole of the ceiling finishing material 4 and attached.
Connect the wire 16 above the ceiling to the outlet 13 on the lid 2,
By simply closing the inner hole 3 of the main body 1 with the lid 2, the outlet 13 can be installed at an appropriate position of the ceiling finishing material 4. It is not necessary to lay exposed wires along the lower surface of the ceiling finishing material 4 and connect them to the outlet 13 as in the conventional case, the work is easy, no time and labor is required, the construction period is short, and the construction cost is short. Is low.

Furthermore, unlike the exposed wire, the wire 16 behind the ceiling is not required to be covered and protected by a protective cover, and the material cost is low. Moreover,
The appearance of the ceiling finishing material 4 is not impaired by the exposed electric wires. The inner hole 3 of the main body 1 is also closed by the lid 2, so that the appearance of the ceiling finishing material 4 is not impaired by the inner hole 3 of the main body 1. In particular, in this embodiment, the lid 2 is made of the same material as the ceiling finishing material 4 as described above, and there is almost no sense of incongruity, which is preferable. Further, when any trouble occurs and the cause is investigated, the connection state of the outlet 13 can be confirmed and inspected by pulling down the lid 2 from the inner hole 3 of the main body 1 and removing it. Thus, the connection state of the outlet 13 can be confirmed and checked. It is not necessary to remove the outlet 13 from the lid 2 and the operation is easy.

Further, the ceiling finishing material 4 is made of a material such as gypsum board, plywood, etc., and is relatively brittle. However, when the electric wire 16 above the ceiling is pulled out from the inner hole 3 of the main body 1, the ceiling finishing material 4 is formed by the main body 1. Protected and ceiling finish 4
There is no risk of damage. When a new electric wire 16 is connected to the outlet 13 and the electric wire passes through the inner hole 3 of the main body 1 and is inserted into the ceiling, the ceiling finishing material 4 is protected by the main body 1 and there is no possibility that the ceiling finishing material 4 is damaged. . The lid 2 is also made of the same material as the ceiling finishing material 4 and is relatively brittle, but it is protected by the outer frame 11 and there is no risk of the lid 2 being damaged, so there is no problem.

Further, a new electric wire 16 is connected to the outlet 13.
As described above, the electric wire 16 may be passed through the inner hole 3 of the main body 1 and inserted into the back of the ceiling, and the electric wire 16 may be wired behind the ceiling. In this embodiment, in this embodiment, the body 27 of the decorative frame is fitted into the through hole formed in the ceiling finishing material 4 and attached at a plurality of positions in the wiring path. The main body 27 is shown in FIG.
It has the same configuration as the main body 1.

Therefore, as shown in FIG. 6, the arm of the operator and the cable catcher 28 are
And can be inserted under the ceiling. Then, FIG.
For example, as shown in FIG.
When the cable catcher 28 is operated in the inner hole 29 of the cable and the cable catcher 28 is extended toward the wire insertion position, the operator's arm and the wire 1 are positioned at the wire insertion position.
6 can be passed through the inner hole 3 of the main body 1 and inserted under the ceiling, and the inserted electric wire 16 can be engaged with the cable catcher 28. Therefore, thereafter, in the first position, the cable catcher 28 is operated in the inner hole 29 of the main body 27,
When contracted, the cable 16 above the ceiling can be drawn by the cable catcher 28. Instead of using the cable catcher 28, the inserted electric wire 16 may be thrown toward the first position at the electric wire insertion position, extended, and pulled up by the operator's arm at the first position. Further, thereafter, at the next position, similarly, when the cable catcher 28 is operated in the inner hole 29 of the main body 27 and is extended toward the first position, the wire 16 above the ceiling is drawn by the cable catcher 28. be able to. At the first position, the electric wire 16 above the ceiling may be thrown toward the next position, extended, and then pulled by the operator's arm at the next position. This operation is repeated at each position, so that the wires 16 behind the ceiling can be wired.

Further, in this embodiment, the lid 3
0 closes the inner hole 29 of the main body 27. Lid 30
3 has the same configuration as the lid 2 in FIG.
And the lid 30 is only for wiring the electric wire 16, and the outlet 13 is not provided on the lid 30.

Therefore, when wiring the wires 16 behind the ceiling, the worker does not need to enter the inside of the ceiling, and the work is easy. When the worker's arm is passed through the inner hole 29 of the main body 27 and inserted into the space behind the ceiling, the ceiling finishing material 4 is protected by the main body 27 and there is no possibility that the ceiling finishing material 4 is damaged. Then, the inner hole 29 of the main body 27 is
Is closed, and the appearance of the ceiling finishing material 4 is not impaired by the inner hole 29 of the main body 27. Moreover, the lid 30 is made of the same material as the ceiling finishing material 4, and there is almost no sense of incongruity.

The main body 27 has not only the same configuration as the main body 1 of FIG. 2, but also the same size. Therefore, the inner hole 29 has a circular shape and a diameter of 80 to
Although it is 300 mm, this value is important. When the diameter of the inner hole 29 does not reach 80 mm, the operator's arm is
Passing through the inner hole 29 is difficult and meaningless. Conversely, if the diameter of the inner hole 29 exceeds 300 mm, the body 27
Is larger than that, and it is not appropriate to fit this into a through hole formed in the ceiling finishing material 4 and attach it. First, there is a problem that the harmony of the ceiling finishing material 4 is impaired by the large decorative frame. Further, in general, various devices such as lighting fixtures, air conditioners, ventilation fans, heat exchangers, sprinklers, etc. are provided in place of the ceiling finishing material 4,
If the outer diameter of the main body 27 is too large, a through hole is formed in the ceiling finishing material 4 between the devices, and the main body 27 of the decorative frame cannot be fitted therein, which is unacceptable in the design of the ceiling finishing material 4. Therefore, the diameter of the inner hole 29 is set to 80-30.
It is necessary to select 0 mm, and this value has a critical meaning. The optimal value is between 125 and 200 mm. If the diameter of the inner hole 29 is 125 to 200 mm, the arm of the worker can be easily inserted, and the harmony of the ceiling finishing material 4 is not impaired, and various devices can be installed on the ceiling finishing material 4.
, The body 27 of the decorative frame can be attached at a plurality of positions in the wiring path of the electric wire 16 without any problem, and there is no problem.

As shown in FIG. 8, an exposed outlet may be used for the outlet 31, and the outlet 31 may be equipped on the lid 2. In the case of the exposed outlet 31, a through hole is formed in the lid 2, and the electric wire 16 behind the ceiling is inserted therein, and the outlet 31 is inserted.
To the base 32 and connected to the terminal. Thereafter, the base 32 is pressed against the lower surface of the lid 2, which is fixed by screws 33, and the protective cover 34 is fitted to the base 32.
1 and the electric wire 18 of the electric device 17 can be connected to the outlet 31 of the lid 2.

When a communication jack or a series unit for television is used in place of the outlets 13 and 31, and the lid 2 is provided, and the electric wire 16 above the ceiling is connected to the jack for communication or the series unit for television, A jack or television series unit can also be installed in place on the ceiling finishing material 4, and the electric wires of the electric equipment can be connected to the communication jack of the ceiling finishing material 4 or the television series unit. Another wiring device may be provided on the lid 2 and an electric wire 16 above the ceiling may be connected thereto.

When a surveillance camera or fire detector is newly installed, the surveillance camera or fire detector is attached to the lid 2 and the electric wire 16 above the ceiling is connected to the surveillance camera or fire detector. 4 can also be installed in the appropriate places. As shown in FIG. 9, when a new infrared or hot-wire type security detector 35 is installed, it is equipped on the lid 2 and the electric wire 16 above the ceiling is connected to the infrared or hot-wire type security detector 35. The infrared or hot-wire type security detector 35 can be installed at an appropriate position on the ceiling finishing material 4. When various detectors such as a temperature detector, a humidity detector, and a gas leak detector are newly installed in addition to the infrared or hot-wire type security detector 35, the lid 2 is equipped with the detector and the electric wire 16 above the ceiling is installed. Is connected to various detectors, the various detectors can also be installed at appropriate locations on the ceiling finishing material 4. When an alarm device such as a buzzer is newly installed, the alarm device can be installed in the lid 2 and the electric wire 16 above the ceiling can be connected to the alarm device so that the alarm device can be installed at an appropriate position of the ceiling finishing material 4.

FIGS. 10 and 11 show the wiring routes behind the ceiling in FIG. In this embodiment, in a specific makeup frame,
The outlet A1 is mounted on the lid 2, the inner hole 3 of the main body 1 is closed by the lid 2, and the outlet A2 is attached to the wall surface separately from the outlet A1. Further, the electric wire 16 behind the ceiling is wired by the body 29 and the lid 30 of the decorative frame, and the electric wire 16 is connected to the outlet A.
1, A2 and the distribution board A3, and the electric wire of the electric device A4 is connected to the outlets A1, A2. Further, in another makeup frame, the communication jack B1 is
The inner hole 3 of the main body 1 is closed by the lid 2, and the communication jack B is provided separately from the communication jack B1.
2 is attached to a wall surface, wires 16 above the ceiling are connected to communication jacks B1 and B2 and a communication terminal board B3, and wires of a telephone B4 are connected to the communication jacks B1 and B2. Further, in another decorative frame, the television series unit C1 is mounted on the lid 2, the inner hole 3 of the main body 1 is closed by the lid 2, and the electric wire 16 above the ceiling is connected to the television series unit C1 and the television distributor C3. Connected, and the electric wire of the television C4 is connected to the television series unit C.
1 connected. Further, a surveillance camera D1, a fire detector E1, and an infrared or hot-wire type security detector F1 are provided on the lid 2, the inner hole 3 of the main body 1 is closed by the lid 2, and an electric wire 16 above the ceiling is connected thereto. It is connected to a monitor panel D3, a fire receiver E3, and a security receiver F3. In addition, the electric wire 16 above the ceiling is connected to the lighting fixture G4 and connected to the distribution board A3.

In this embodiment, the lids 2, 30 are fitted in the inner holes 3, 29 in the circular annular main bodies 1, 27. However, the main bodies 1, 27 are not necessarily round. It does not need to be a mold ring, and may be a square ring shape, and the inner holes 3 and 29 may be square shapes. In the case of a square inner hole, the length of one side is 80 to
Preferably it is 300 mm. The optimal value is 125-2
00 mm. The reason is as described above. The lids 2 and 30 do not necessarily need to be of the fitting type, but may be of the hinge type.

Further, in the decorative frame shown in FIG. 2, when the fire detector 36 behind the ceiling is specially installed as shown in FIG. 12, the mounting frame 37 may be combined with the main body 1 of the decorative frame. The mounting frame 37 has a length corresponding to the distance between the ceiling surface 20 behind the ceiling and the ceiling finishing material 4, and extends vertically. Therefore, the lower end of the mounting frame 37 is
When the fire detector 36 is attached to the upper end of the mounting frame 37, the fire detector 36 can be brought close to or in contact with the ceiling surface 20 above the ceiling and supported at that position.
With respect to the fire detector 36 above the ceiling, the installation position is defined by the Fire Service Law, and the fire detector 36 is brought into contact with the ceiling surface 20 above the ceiling or 30 cm from the ceiling surface 20.
It is obliged to approach within. Therefore, the length of the mounting frame 37 is appropriately selected, and the fire detector 3
It is preferable that 6 be within 30 cm of the ceiling surface 20. The length of the mounting frame 37 may be appropriately selected, and the fire detector 36 may be brought into contact with the ceiling surface 20 behind the ceiling.

In the embodiment shown in FIG. 12, the inner hole 3 of the main body 1 is closed by the lid 2 and the outlets 13 and 3 are closed.
1. Similarly, a wiring device such as a communication jack or a series unit for a television is mounted on the lid 2, and an electric wire 16 above the ceiling is connected to the wiring device. Therefore, the wiring device can be installed at an appropriate position of the ceiling finishing material 4, and the electric wires of the electric device can be connected to the wiring device of the ceiling finishing material 4.
A surveillance camera, a fire detector, various detectors or an alarm may be provided on the lid 2 and an electric wire 16 above the ceiling may be connected thereto.

Further, in the embodiment of FIG. 12, the mounting frame 37 has a pair of legs 38 extending vertically. The legs 38 are arranged at intervals around the inner hole 3 of the main body 1, and the lower ends thereof are fixed to the main body 1. For example, a channel material is used for each leg 38, the lower end of which is fitted to each holder 7, which is fixed by screws 39. Further, the mounting frame 37 is provided with each leg 38.
Has a connecting portion 40 for connecting the upper ends of the. And the fire detector 36 is attached to the connecting part 40. For example, a flat plate is used as the connecting portion 40 of the mounting frame 37, both ends of which are formed in a channel shape, and this is fitted to the upper end of each leg 38, and a screw 41 is formed.
It has been fixed by. Furthermore, mounting frame 3
7, a through hole 42 and a screw hole are formed in the connecting portion 40, and an electric wire 43 behind the ceiling is passed through the through hole 42 of the connecting portion 40.
A fire detector 36 can be connected to the wire 43,
Then, the fire detector 36 is pressed against the lower surface of the connection part 40, the screw 44 is passed through the screw hole of the connection part 40, and screwed to the base of the fire detector 36.
6 can be attached. Therefore, the fire detector 36 faces the inner hole 3 of the main body 1 in the vertical direction.
Further, the fire detector 36 has an operation confirmation lamp 45 for confirming its operation.

Therefore, as for the mounting frame 37 shown in FIG. 12, the distance between the ceiling surface 20 above the ceiling and the ceiling finishing material 4 is measured or calculated in advance, and the length of each leg 38 is selected based on the distance. In the plane, each leg 38 is cut to its length. Then, on the floor surface, the connecting portion 40 and the leg portion 38 are fixed by screws 41 and connected, and the screws 3
9, the leg 38 and the holder 7 can be fixed. Further, thereafter, a through hole is formed in the ceiling finishing material 4,
The electric wire 43 above the ceiling is pulled out of the through hole, the fire detector 36 is connected to the floor surface, and the fire detector 36 is attached to the connecting portion 40 of the mounting frame 37. Thereafter, the operator rides on the stepladder, lifts the main body 1 of the decorative frame and the mounting frame 37 on the stepladder, passes the mounting frame 37 through the through hole of the ceiling finishing material 4 and protrudes behind the ceiling, and puts the main body 1 on the ceiling finishing material. When it is fitted into the through hole of 4 and attached, the fire detector 3
6 can be brought close to or in contact with the ceiling surface 20 above the ceiling, supported at that position, and installed.

After the fire detector 36 is installed, the lid 2
Is opened, a detection port is formed by the inner hole 3 of the main body 1,
On the floor, the fire detector 36 can be inspected from the detection port 3. The operation confirmation lamp 45 can be confirmed from the detection port 3. On the floor, a fire tester can be inserted from the detection port 3 and extended, brought closer to the fire detector 36, and the fire detector 36 can be fire tested by the fire tester. When the fire detector 36 breaks down,
Can be removed from the through hole of the ceiling finishing material 4 and pulled down, the mounting frame 37 can be pulled out from the ceiling, and the fire detector 36 can be removed and replaced on the floor surface.

A gas leak detector may be used in place of the fire detector 36, and the gas leak detector may be attached to the upper end of the mounting frame 37.

In the decorative frame shown in FIGS. 2 and 3, FIG.
As shown in FIG. 14 and FIG.
6, a pair of fingers 46 instead of the holder 7 of the claw 8 may be disposed at diametrically symmetric positions of the sleeve 6 and fixed to the outer surface thereof. In this case, when the fingers 46 are pinched and approached by hand and the sleeve 6 is fitted into the through hole of the ceiling finishing material 4, the fingers 46 are expanded by elasticity, and the main body 1 can be attached by the fingers 46 and the flange 5.

[0040]

As described above, according to the present invention, the main body 1 of the decorative frame is fitted into the through hole of the ceiling finishing material 4 and attached, and then the electric wire 16 behind the ceiling is connected to the wiring device of the lid 2. Then, by simply closing the inner hole 3 of the main body 1 with the lid 2, the wiring device can be installed at an appropriate position of the ceiling finishing material 4. Simply connect the cable 16 above the ceiling to the surveillance camera, fire detector, various detectors or alarms of the lid 2 and close the inner hole 3 of the main body 1 with the lid 2 to obtain the surveillance camera, fire detector, various detectors Alternatively, an alarm can be installed at an appropriate place of the ceiling finishing material 4. As in the conventional case, the exposed electric wire is laid along the lower surface of the ceiling finishing material 4,
There is no need to connect to wiring equipment, surveillance cameras, fire detectors, various detectors or alarms, the work is easy,
Time and labor are not required, the construction period is short, and the construction cost is low. About the electric wire 16 behind the ceiling, unlike the exposed electric wire,
It is not required to cover and protect it with a protective cover and the material cost is low. The appearance of the ceiling finishing material 4 is not impaired by the exposed electric wires. Inner hole 3 of body 1
Also, the cover 2 is closed by the lid 2, and the appearance of the ceiling finishing material 4 is not impaired by the inner hole 3 of the main body 1. It is also easy to check and check the connection status of wiring devices, surveillance cameras, fire detectors, various detectors or alarms. Furthermore, even if the ceiling finishing material 4 is relatively brittle, the ceiling finishing material 4 is protected by the main body 1 and there is no possibility that the ceiling finishing material 4 is damaged.

Further, when the electric wires 16 are wired behind the ceiling, the main body 27 of the decorative frame is fitted into the through holes of the ceiling finishing material 4 at a plurality of positions in the wiring route, and attached.
The operator's arm is passed through the inner hole 29 of the main body 27 and inserted into the ceiling above, whereby the electric wire 16 above the ceiling can be wired, and it is not necessary for the operator to enter the ceiling, and the work is easy. is there. The ceiling finishing material 4 is protected by the main body 27,
There is no danger of the ceiling finishing material 4 being damaged, and the inner hole 29 of the main body 27 is also closed by the lid 30.
The appearance of the ceiling finishing material 4 is not impaired by the inner hole 29 of the main body 27.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing an embodiment of the present invention.

FIG. 2 is a perspective view of the decorative frame of FIG.

FIG. 3 is a sectional view of the decorative frame of FIG. 2;

FIG. 4 is a bottom view of the decorative frame of FIG. 3;

FIG. 5 is a sectional view showing the lid hook of FIG. 3;

FIG. 6 is an explanatory diagram showing a state in which electric wires behind the ceiling in FIG. 1 are wired.

FIG. 7 is an explanatory view showing a step subsequent to FIG. 6;

FIG. 8 is a sectional view showing another embodiment.

FIG. 9 is a sectional view showing another embodiment.

FIG. 10 is an explanatory diagram of a wiring path behind the ceiling in FIG. 1;

FIG. 11 is an explanatory view showing another embodiment.

FIG. 12 is a perspective view showing another embodiment.

FIG. 13 is a perspective view showing another embodiment.

14 is a sectional view of the decorative frame of FIG.

[Explanation of symbols]

 1,27 Body 2,30 Lid 3,29 Inner hole 4 Ceiling finishing material 13,31 Outlet 16 Electric wire

Claims (5)

[Claims] 1. A round or square ring-shaped main body having an inner hole of a fixed size, which can be fitted and attached to a through hole formed in a ceiling finishing material, and a lid for closing the inner hole of the main body. , Wiring equipment, surveillance camera,
A decorative frame comprising a fire detector, various detectors or an alarm, wherein an electric wire above the ceiling is connected to the wiring device, the monitoring camera, the fire detector, the various detectors or the alarm. 2. When a round or square ring having a certain size of inner hole is used as a body of a decorative frame and an electric wire is laid behind the ceiling, at a plurality of positions in the wiring path, The main body of the decorative frame is fitted into a through hole formed in a ceiling finishing material, attached, an operator's arm is passed through the inner hole of the main body, and inserted into the ceiling, thereby laying wires behind the ceiling, A method of wiring under the ceiling, comprising closing an inner hole of the main body with a lid. 3. A round or square annular main body having an inner hole of a fixed size, which can be fitted and attached to a through hole formed in a ceiling finishing material, and a lid for closing the inner hole of the main body. And, when wiring an electric wire above the ceiling, the arm of the worker is passed through the inner hole of the main body, and inserted into the above the ceiling, whereby the electric wire above the ceiling is wired. . 4. The decorative frame according to claim 3, wherein the main body is a circular ring, the inner hole has a circular shape, and the diameter is 80 to 300 mm. 5. The main body is a rectangular ring, the inner hole is square, and the length of one side is 80 to 300 m.
The decorative frame according to claim 3, wherein m is m.