JP7449087B2 - Ceiling fall prevention structure - Google Patents

Description

The present invention relates to a ceiling fall prevention structure that prevents ceiling panel materials placed on the ceiling of a building from falling.

BACKGROUND ART Conventionally, in a ceiling structure in which a ceiling material is attached to the ceiling of a building, a fall prevention structure for preventing the ceiling material from falling and a method for constructing the same have been known.

For example, as shown in FIG. 8, Patent Document 1 discloses a ceiling material fall prevention structure that prevents a ceiling material 80 from falling, and a construction method. This involves forming a pair of holes 82 and 83 in the ceiling material, passing the drop prevention wire 84 through one hole 82, attaching one end of the fall prevention wire 84 to a support member 86 above the ceiling material, and attaching the other end of the fall prevention wire 84 to a support member 86 above the ceiling material. Pass the other end of the fall prevention wire 84 through the other hole 83 from below using a construction wire hanging down through the hole 83, and support the other end of the fall prevention wire 84 under tension. It is attached to the member 87, and with this, it is possible to prevent ceiling materials from falling in theaters etc. without actually having to set up scaffolding.

In the ceiling fall prevention structure described in Patent Document 2, a reinforcing coating layer comprising reinforcing fibers and paint is formed on the indoor surface of the ceiling so as to extend over a plurality of ceiling surface constituent materials, and the reinforcing coating layer is The layer is formed by applying fiber-reinforced paint to the surface of the ceiling material, and the reinforcing paint layer is formed into strips, arranged in a grid, and suspended and fixed to the ceiling base material. This makes it difficult for the ceiling surface component to separate from the ceiling base material.

Further, the ceiling fall prevention device described in Patent Document 3 includes a bundle of materials extending from a floor frame in an attic space to a lower part of the ceiling surface through a ceiling opening, and a cap that is supported by these bundles and closes the ceiling opening. and a support member installed between the bundled materials along the ceiling surface of the ceiling, thereby preventing the ceiling materials from falling even if shaking is applied to the ceiling during an earthquake.

Japanese Patent Application Publication No. 2015-124556 Japanese Patent Application Publication No. 2015-63853 JP2015-25280A

Now, the construction method of Patent Document 1 involves forming a hole in the ceiling material and passing a drop prevention wire through the support member above the ceiling material, which requires construction work on the upper and lower sides of the ceiling material. The problem is that it is complicated and difficult to install after the ceiling material has been placed or on an existing ceiling.

The ceiling fall prevention structure of Patent Document 2 requires a heavy work load such as installing scaffolding or applying fiber-reinforced paint on the surface of the ceiling surface constituent material, and is difficult to construct. The problem with this fall prevention device is that it requires work to attach a bundle of materials that extends from the floor structure through the ceiling opening and extends below the ceiling surface, and this work is troublesome after the ceiling material is installed.

In addition, a type of suspended ceiling, such as a so-called system ceiling, is constructed by attaching a frame material to a hanging member suspended from the ceiling frame, and placing the end of the ceiling board material on the flange of the ceiling material. There is one that has board materials arranged. In this case, since the ceiling board material is only placed on the flange portion, there is a risk that the ceiling board material may fall off the edge material and fall due to shaking of the ceiling or the like. As described above, the above-mentioned suspended ceiling is vulnerable to shaking caused by earthquakes, etc. Therefore, there has been a desire for a means for preventing ceiling panels from falling, which is relatively simple and can be constructed even after the ceiling panels have been laid. .

The present invention has been made in order to solve the above-mentioned problems, and provides a ceiling fall prevention structure that easily and effectively holds ceiling board materials to prevent them from falling, and is excellent in workability and economy. The task is to do so.

In order to solve the above-mentioned technical problems, the ceiling fall prevention structure according to the present invention, as shown in FIGS. In a ceiling structure in which a hanging member 8 is arranged, a support part 20 that is suspended from the hanging member 8 is erected in the center part, and flange-like holding parts 18 are formed in the left and right parts, respectively. Among the inverted T-shaped ceiling bar material 10 and the ceiling bar material 10 suspended from the hanging member 8 and arranged in parallel to each other, the upper part of each of the holding parts 18 of the adjacent ceiling bar material 10 It has a rectangular ceiling board material 4 on which both ends 56 are placed, and a wire rod 12 (12x) stretched under each of the ceiling board materials 4, and one end portion of the wire rod 12 is provided. The wire rods 12 are attached to one side of the wall body part 6 and the other end is attached to the other side of the wall body part 6, and two or three or more of the wire rods 12 are arranged under each of the ceiling board materials 4, When the ceiling board material 4 comes off from the holding part 18 of the ceiling bar material 10 and falls off when the ceiling bar material 10 shakes, the ceiling board material 4 is received and held by the wire rod 12 to prevent the ceiling board material 4 from falling. It is the composition.

The ceiling fall prevention structure according to the present invention has a configuration in which the wire rods 12 (12x) are arranged in a direction parallel to the ceiling bar material 10 and/or in a direction intersecting the ceiling bar material 10.
Moreover, the ceiling fall prevention structure according to the present invention has a structure in which the wire rods 12 are arranged on the lower side near both ends 56 of the ceiling plate material 4, respectively.

Further, the ceiling fall prevention structure according to the present invention has a structure in which the ceiling plate material 4 is formed into a rectangular shape, and the short side portion thereof is arranged above the holding part 18 of the ceiling bar material 10.

In the ceiling fall prevention structure according to the present invention, the wire rods 12 are arranged in parallel directions or in directions that intersect with each other.

The ceiling fall prevention structure according to the present invention is configured to use a metal wire or a non-metal rope as the wire rod 12.

The ceiling fall prevention structure according to the present invention has a structure in which a fixing device 14 such as an anchor is fixed to the wall frame portion 6, and an end portion of the wire rod 12 is fixed to the fixing device 14.

The ceiling fall prevention structure according to the present invention has a structure in which a tension adjuster 64 is interposed between the fixing tool 14 and the wire rod 12 to adjust the tension of the wire rod 12.

According to the ceiling fall prevention structure according to the present invention, one end of the wire rod is attached to one side of the wall body part, the other end part is attached to the other side of the wall body part, and two wire rods are attached to the bottom side of each ceiling board. Or, if three or more wires are installed and the ceiling panel material comes off from the holding part of the ceiling bar material and falls off when the ceiling shakes, the ceiling panel material is received and held by the wire rod to prevent the ceiling panel material from falling. Therefore, it is possible to easily and effectively hold falling ceiling board materials to prevent them from falling, and also to have excellent workability and economical efficiency.

According to the ceiling fall prevention structure according to the present invention, the wire rods are arranged on the lower side near both ends of the ceiling board material, and the ceiling board material is formed into a rectangular shape, and the short side thereof is used to hold the ceiling bar material. Since it is arranged at the upper part of the ceiling panel, the ceiling panel material can be held accurately and stably by the wire rod.

According to the ceiling fall prevention structure according to the present invention, a fixing device such as an anchor is fixed to the wall frame, an end of the wire is fixed to the fixing device, and a tension adjustment device is provided between the fixing device and the wire. Since the tension of the wire rod is adjusted by interposing the wire rod, there is an effect that the attachment of the wire rod and the adjustment of the tension of the wire rod can be performed satisfactorily.

It is a figure showing a side (part) of a ceiling fall prevention structure concerning an embodiment. It is a figure showing the ceiling bar material concerning an embodiment. It is a figure which shows the example which connected the wire to the wall frame part. It is a figure which shows the other example which connected the wire to the wall frame part. FIG. 3 is a plan view showing the arrangement of wires in the ceiling fall prevention structure according to the embodiment. According to the embodiment, (a) is a diagram showing a state in which the ceiling shakes and the ceiling board material falls off from the ceiling bar material, and (b) is a diagram showing a state in which the fallen ceiling board material is caught with a wire to prevent it from falling. FIG. 7 is a plan view showing another wire arrangement form in the ceiling fall prevention structure according to the embodiment. It is a figure which shows the ceiling material fall prevention structure based on a conventional example.

Embodiments according to the present invention will be described below based on the drawings.
FIGS. 1, 5, etc. relate to an embodiment and show a ceiling fall prevention structure for a ceiling plate material 4 arranged on a ceiling part 2 of a building. The ceiling fall prevention structure related to this ceiling plate material 4 can also be effectively adopted in a so-called system ceiling. The system ceiling is a type of suspended ceiling, and for example, the ceiling board material 4 and equipment such as ceiling lighting are built into the base and are arranged side by side.

In the interior of the building according to this embodiment, wall bodies 6 are formed on both sides facing each other, and a ceiling base 3 is formed on the ceiling 2 above. As the ceiling base 3, a hanging member 8, a ceiling bar material 10 (wild edge material), etc. are arranged, and a ceiling board material 4 is attached to the ceiling bar material 10. The ceiling bar material 10 is a kind of edge material and forms a framework for arranging the ceiling board material 4.

Alternatively, a configuration may be adopted in which a field edge receiving material is attached to the hanging member 8 and the ceiling bar material 10 is attached to this field edge receiving material using a clip or the like. In addition, lighting fixtures 5 and the like may be arranged on the ceiling portion 2 in line with the ceiling plate material 4 if necessary.
The ceiling board material 4 is a rectangular (rectangular or square) board material. The plane of the lighting fixture 5 is rectangular like the ceiling board material 4, and an LED light or the like is used.

Furthermore, in this embodiment, a wire 12 (wire rope) is used as a wire stretched between the wall body parts 6. This wire 12 is made of a rope-like wire made by twisting steel wires. In addition to the wire 12, as the wire material, it is also possible to use a material capable of receiving and supporting the ceiling plate material 4, such as metal wire, wire, cable, piano wire, or non-metallic rope or rope.

The wall frame portion 6 of the building is made of, for example, a concrete structure, but may also be made of steel (H-shaped steel, channel steel, square steel, etc.) or wood. In short, any wall body part 6 may be used as long as the wire 12 can be attached to the wall body part 6 and has the strength to be stretched. Here, an anchor 14 as a fixing tool 14 is driven into the wall body part 6, and a wire 12 is attached to it.

As shown in FIG. 2, the ceiling bar material 10 has an inverted T-shaped cross section, a base 16 is formed upright in the center, and flange-shaped holding parts are provided on the left and right sides of the lower end of the base 16, respectively. 18, 18 are formed horizontally. A support portion 20 having a rectangular cross section is formed in the upper part of the base portion 16 in a state in which it bulges out to the left and right. The ceiling bar material 10 is a long material of, for example, 2000 mm to 4000 mm.

The ceiling bar material 10 is made by bending and molding a steel plate, and specifically consists of a first member 22 having an inverted T-shaped cross section and a second member 24 having a relatively flat shape. The upper support portion 20 of the base 16 of the first member 22 includes an upper piece, left and right side pieces, and lower pieces 26, 26 each bent inward from these side pieces.
These lower pieces 26 abut each other at the center, are further bent downward, and are extended as they are to form the base 16. Further, at the lower end portion of the base portion 16, each of the base portions 16 is bent outward to form first flange portions 28, 28.

The second member 24 is bent approximately 180 degrees in a semicircle with the left and right sides of the flat bottom portion 30 facing inward, respectively, to form flat portions 32, 32 facing inward, and both flat bottom portions 32 , 32 with a gap 34 provided therebetween. The second member 24 forms second flange parts 36, 36 by the bottom part 30 and both flat parts 32, 32.

Thereby, the holding parts 18, 18 of the ceiling bar material 10 are held between the bottom part 30 of the second member 24 and the left and right flat parts 32, 32, the first flange part 28 of the first member 22, 28 is fitted, and the first flange parts 28, 28 are covered with the second flange parts 36, 36.
By covering the first flange portion of the ceiling bar material 10 with the second flange portion, the strength of the holding portions 18, 18 of the ceiling bar material 10 is reinforced, and the mounting strength of the ceiling plate material 4 is increased.

The hanging member 8 consists of a long hanging bolt 40 suspended from the ceiling frame and a support 42 attached to its lower end. This support 42 is provided with a fixing part 44 at the upper part, and engagement piece parts 46, 46 which support the ceiling bar material 10 are formed at the lower part.
The support 42 has an inverted U-shape, and hook-shaped engaging pieces 46, 46 are provided facing inward from the left and right sides of the lower end, and a gap 48 is formed between these engaging pieces 46. It is formed. The support 42 has an elastic function, so that the gap 48 between the engaging pieces 46, 46 can be expanded or contracted within the range of the elastic force.

A support 42 is attached to the lower end of the hanging bolt 40. Insert the threaded part 50 with the threaded groove at the bottom of the hanging bolt 40 into the hole provided in the fixing part 44 of the support 42, and fasten the nuts 54, 54 to the threaded part 50 of the hanging bolt 40. , the hanging bolt 40 is fixed to the fixing part 44 of the support 42.

The ceiling board material 4 is a rectangular material, and here, for example, a rectangular ceiling board material 4 is used. As the material for the ceiling plate material 4, a hard material such as a noncombustible material, a wooden material, or a light metal material is used. In the case of a rectangular shape, the dimensions of the ceiling board 4 are, for example, in the range of 1000 mm to 2500 mm on the long side and 200 mm to 500 mm on the short side. Here, the ceiling board 4 used has a long side of 1800 mm and a short side of 300 mm.

Now, the ceiling base of the ceiling fall prevention structure related to the ceiling plate material 4 is mainly composed of the hanging member 8, the ceiling bar material 10, and the like. The hanging bolts 40 of the hanging member 8 are attached to the ceiling frame at the top of the building. The hanging bolts 40 are attached in a row at predetermined intervals.
A plurality of rows of hanging bolts 40 are arranged, and the interval between adjacent rows is approximately the same as, for example, the length of the ceiling board material 4 in the long side direction (here, 1800 mm).

The ceiling bar material 10 is fixed to a support 42 at the lower end of the hanging member 8 and is placed in a suspended state from the hanging member 8. When installing the ceiling bar material 10, the ceiling bar material 10 is placed below the support 42, and the gap 48 between the left and right engaging pieces 46, 46 is widened by the elastic action of the support 42. It is placed as it is between the lower part of the support part 20 of the ceiling bar material 10.

Then, both the engagement pieces 46, 46 are closed by the elastic action of the support 42, and the engagement pieces 46, 46 of the support 42 are clamped and engaged with the lower part of the support 20 of the ceiling bar material 10. As a result, the engaging pieces 46, 46 of the supporter 42 engage with the lower parts of the lower pieces 26, 26 of the supporter 20 of the ceiling bar material 10, and the ceiling bar material 10 is supported by the supporter 42. .

Regarding other parts of the ceiling bar material 10, the ceiling bar material 10 is similarly clamped and engaged with and supported by the supporting members 42 of the hanging member 8 at the corresponding locations. When the ceiling bars 10 are arranged in a plurality of rows, and the intervals between the ceiling bars 10 in adjacent rows are approximately the width of the ceiling board 4, the holding parts 18 of these ceiling bars 10 hold the framework of the ceiling board 4. is formed.

The ceiling plate material 4 is arranged between each adjacent ceiling bar material 10. Here, the longitudinal direction of the ceiling plate material 4 is arranged in a direction intersecting the ceiling bar material 10. Then, one end 56 (short side) of the ceiling board material 4 is placed on the holding part 18 of one ceiling bar material 10, and the other end 56 (short side) is placed on the other ceiling bar material 10. The ceiling board material 4 is placed between the ceiling bar materials 10.

In this way, the ceiling plate materials 4 are arranged in a row between adjacent ceiling bar materials 10 from one wall body portion 6 to the other wall body portion 6 facing each other without any gaps. Thereby, the ceiling plate materials 4 are arranged in a row between the ceiling bar materials 10. Further, the lighting fixtures 5 are suspended from the ceiling frame and arranged between predetermined rows of the ceiling board materials 4. The lighting fixture 5 requires equipment such as wiring and is installed separately from the ceiling board material 4.

Construction of the suspended ceiling on which the ceiling board material 4 is arranged is completed in the above-described manner, and thereafter the ceiling fall prevention structure according to this embodiment can be constructed at any time. In this way, the construction of this ceiling fall prevention structure is independent from the construction of the ceiling plate material 4, so construction can be performed even when the room is in use, for example. Further, since the suspended ceiling is easy to construct, the ceiling material can be easily replaced during renovations, etc., and earthquake countermeasures can also be easily implemented by constructing the ceiling fall prevention structure.

In addition, if the existing ceiling structure has ceiling panels 4 arranged in the same form, there is no need to renovate the ceiling structure if reinforcement is later required for earthquake countermeasures, etc., and it can be left as is. This ceiling fall prevention structure can be constructed. In addition, this ceiling fall prevention structure can be used in gymnasiums, halls, and other general facilities as long as they have similar ceiling structures. Further, since the wire 12 holding the ceiling board material 4 is thin, it is not noticeable and does not spoil the aesthetic appearance of the ceiling.

As shown in FIG. 3, when attaching the wire 12 to the wall body part 6, a fixing device such as an anchor 14 is first fixed to the wall body part 6. For example, if the wall body part 6 is a concrete structure, anchors 14 are driven into it, or if it is made of steel or the like, bolts are fastened thereto, and these fixing tools are fixed and used.
Further, the wire 12 is attached to the anchor 14 or the like using an L-shaped fitting 58, a wire clip 60, or the like. Holes are provided in each of the vertical and horizontal pieces of the L-shaped fitting 58.

In the case of a wall body part 6 such as a concrete structure, an anchor 14 is driven into the wall body part 6, and the end of the wire 12 is fixed thereto. If the head of the anchor 14 has a threaded groove, the hole of the L-shaped fitting 58 is fitted into the head, and the nut 62 is fastened to fix the L-shaped fitting 58 to the anchor 14. The wire 12 is passed through the other hole of the L-shaped fitting 58, and the two wires 12 are fixed with a wire clip 60 or the like.

In this case, the tension of the wire 12 can be adjusted using the turnbuckle 64(a) as the tension adjuster 64. For example, a turnbuckle 64(a) may be placed between the anchor 14 and the end of the wire 12, or between the wires 12. By tightening the turnbuckle 64(a), the tension of the wire 12 can be adjusted to ensure an appropriate tension. Moreover, an elastic material such as a coil spring may be interposed instead of the turnbuckle 64(a) or together with the turnbuckle 64(a). This elastic material can prevent the wire 12 from becoming loose.

Further, as the tension adjuster 64, a screw type adjuster 64(b) in which a male thread is screwed into a female thread shown in FIG. 4 can be used. This has a cylindrical female threaded part 66, a bolt-shaped male threaded part 68 that is screwed into the female threaded part 66, a connecting part 69, and a connecting part 70. Further, a pin 71 is attached to a connecting portion 70 at the other end of the female threaded portion 66, and a wire 12 is connected to a connecting portion 69 at one end of the male threaded portion 68.

The screw type adjustment tool 64(b) is attached to the wall frame portion 6 using a fixing base material 72 as the fixing tool 14. This fixing base material 72 has a flat fixing part 74 and a cylindrical joint part 76. This fixing part 74 is attached to the wall frame part 6 with screws (concrete screws, etc.), and a connecting part 70 of the screw type adjustment tool 64(b) is fixed to the joint part 76 with a pin 71. Then, the tension of the wire 12 is adjusted by rotating the male threaded portion 68 using a tool or the like.
In this way, the tension of the wire 12 is adjusted to an appropriate tension using the turnbuckle 64 (a), the screw type adjustment tool 64 (b), or the like as the tension adjustment tool 64. The tension adjuster 64 is arranged at one end or both ends of the wire 12.

The wire 12 is arranged below the ceiling plate material 4 arranged between the ceiling bar materials 10. Here, two wires 12 are provided for each row of ceiling plate material 4. The wire 12 is arranged in a direction intersecting (orthogonal to) the long side of the ceiling plate material 4. The wires 12 are disposed at the lower side near each end 56 (short side) of the ceiling board 4, thereby accurately holding and catching the falling ceiling board 4.
Further, since the wires 12 are arranged for each row of the ceiling plate material 4, it is possible to take partial fall prevention measures, such as arranging the wires 12 only in necessary rows.

Three or more wires 12 may be arranged. Further, although the wires 12 are usually arranged parallel to each other, it is also possible to arrange the wires 12 so that they intersect with each other in the middle to reinforce the vicinity of the intersection. By increasing the number of wires 12, the ability to hold the ceiling plate material 4, etc. can be increased accordingly. If the ceiling board material 4 is relatively lightweight, the number of wires 12 may be reduced, and if the ceiling board material 4 is heavy, the number of wires 12 may be increased.

The wire 12 is installed between the wall frame parts 6 in the room. Therefore, the wire 12 is attached and supported only on the wall frame portion 6. Therefore, the installation work of the wire 12 can be carried out by providing a scaffold (stepladder, ladder, etc.) only in the vicinity of the wall body part 6. Therefore, it does not particularly affect objects placed in the room or general work inside the room.

The wire 12 is placed below the ceiling board 4 with a gap (20 mm to 100 mm, or 50 mm to 200 mm) between the two and the ceiling board 4 so that they do not come into contact with each other. Alternatively, the wires 12 may be placed in close contact with some or all of the ceiling panels 4. The gaps may be set at appropriate intervals in consideration of the shaking of the ceiling plate material 4 during an earthquake or the like.
In addition, when the wire 12 is placed in close contact with the ceiling board material 4, if one end of the ceiling board material 4 falls off due to horizontal shaking, etc., and the other end rests on the ceiling bar material, etc. The ceiling plate material 4 has little inclination, and can be stably held and supported by the wires 12.

The wire 12 is arranged below the ceiling board material 4 near both ends 56. This is to ensure that the wires 12 are supported and held near the ends of the ceiling plate material 4, and that the wires 12 are held together accurately and stably by ensuring the spacing between the wires 12.
In order to accurately catch the ceiling board material 4 that comes off and falls off the ceiling bar material 10 due to shaking, the wire 12 is inserted inward from the end 56 of the ceiling board material 4 (placed on the holding part 18 of the ceiling bar material 10). It is desirable to arrange it within a range of 50 mm to 200 mm. If it is narrower than 50 mm from the end, the end 56 of the ceiling plate material 4 may come off the wire 12. Moreover, if it is wider than 200 mm from the end 56, the distance between the wires 12 arranged side by side becomes short, and when the ceiling board material 4 is held, it cannot be supported in a well-balanced manner.

As for the dimensions of the ceiling plate material 4, the length in the direction intersecting (perpendicular to) the wire 12 is approximately 1000 mm to 2000 mm, considering stable holding by the wire 12. When the ceiling board 4 is rectangular, it is effective to arrange the ceiling board 4 so that the long sides intersect with the wires 12, and the wires 12 can hold the ceiling board 4 accurately and stably.

Here, the length of the ceiling board 4 is 1800 mm on the long side (300 mm on the short side), and for example, one of the wires 12 is placed 100 mm inward from one end 56 (short side) of the ceiling board 4. Place it so that it passes through the position. Further, the other wire 12 is also arranged at a position 100 mm inward from the other end 56 (short side) of the ceiling plate material 4 in the same row.

In this way, the two wires 12 are arranged parallel to each other and passing near both ends 56 (short sides) of the ceiling board material 4. The distance of 100 mm from the end of the ceiling board material 4 is in the range of 5% to 10% when the side length of the ceiling board material 4 is 1000 to 2000 mm, and it is effective to arrange the wire 12 within this range. It is true.

FIG. 5 shows a state in which two wires 12 are arranged under each row of ceiling board members 4 arranged on the ceiling part 2. As shown in FIG. The rows of ceiling board materials 4 are in the same direction (parallel) as the ceiling bar materials 10 on which the ceiling board materials 4 are arranged, and therefore the wires 12 are arranged parallel to the ceiling bar materials 10. The ceiling plate material 4 is only placed on the holding part 18 of the ceiling bar material 10, and is not fixed to the ceiling bar material 10 with screws or the like.
Therefore, as shown in FIG. 6(a), when the ceiling shakes due to an earthquake, etc., the ceiling panel material 4 collides with the ceiling bar material 10 as a whole due to vibrations with different cycles, and the impact causes the ceiling bar material to When the material 10 is tilted, the ceiling board material 4 placed on the ceiling bar material 10 comes off from the holding part 18 and falls off.

At this time, as shown in FIG. 6(b), two wires 12 are arranged at the bottom of each row of the ceiling board material 4, so that the ceiling board material 4 is separated from the ceiling bar material 10. Even if it comes off and falls off, it will be supported by the wire 12 placed below. In other words, immediately after the ceiling board material 4 falls off and falls, the ceiling board material 4 is placed on the two wires 12, 12 arranged below the ceiling board material 4, and the ceiling board material 4 is held and prevented from falling. do. Therefore, the ceiling plate material 4 does not fall easily.

Although the above example shows a structure in which the wires 12 are arranged in a direction parallel to the ceiling bar material 10, the wires 12 may also be arranged in a direction that intersects (orthogonal to) the ceiling bar material 10. .
FIG. 7 shows wires 12 arranged in a direction parallel to the ceiling bar material 10 and wires 12x arranged in a direction perpendicular to the ceiling bar material 10.

For example, when using a large ceiling board material 4, it is also effective to arrange wires 12x in a direction perpendicular to the ceiling bar material 10, in addition to the wires 12 parallel to the ceiling bar material 10. In this case, the combination of the wires 12 and 12x that intersect with the ceiling plate 4 in two directions prevents the ceiling plate 4 from falling more effectively. Of course, it is also possible to adopt a structure in which the wires 12x are arranged only in the direction perpendicular to the ceiling bar material 10 to prevent the ceiling board material 4 from falling.

Even when the wire 12x is arranged in a direction perpendicular to the ceiling bar material 10, the arrangement structure, arrangement method, etc. are the same as when the wire 12x is arranged in a direction parallel to the ceiling bar material 10. . Furthermore, even in the case where the wire 12x is arranged in a direction perpendicular to the ceiling bar material 10, the function of preventing the ceiling board material 4 from falling is no different from when the wire 12 is arranged in a direction parallel to the ceiling bar material 10. do not have.

Therefore, the wires 12 and 12x can be arranged in parallel with the ceiling bar material 10 (disposed below each ceiling board material 4 arranged in a row between the ceiling bar materials 10), in the ceiling A form in which the bar material 10 is arranged in a direction intersecting (perpendicular to) the ceiling bar material 10 (disposed below each ceiling board material 4 arranged across the ceiling bar material 10), and a combination of these two forms, the ceiling bar material 10 and There are three possible configurations: one in which they are arranged in parallel and one in which they are arranged in intersecting (perpendicular) directions.
As to which of the wires 12 and 12x is arranged, an appropriate form may be adopted based on the shape (rectangular, square) and size of the ceiling plate material 4.

The ceiling fall prevention structure according to this embodiment has a simple configuration in which the wire 12 is arranged below the ceiling board material 4, and can easily prevent the ceiling board material 4 from falling, thereby reinforcing the ceiling. In this case, for example, two wires 12 can support ceiling panels 4 weighing up to 5 to 6 kg per m ² .

Attempts to prevent ceiling panels 4 from falling using wires 12 are less effective than using nets to prevent falls, but they are easy to install, and unlike nets, etc., they do not impair the beauty of the ceiling. Since the lighting is not covered, the brightness will not change even after installation. Further, since the wires 12 are arranged for each ceiling plate material 4 (in rows), there is an effect that it is possible to take measures to prevent partial falls, and to take flexible measures depending on the situation.

Therefore, according to the ceiling fall prevention structure according to the embodiment, it is only necessary to fix the wire 12 to both wall bodies 6 facing each other in the room, and in terms of work, it is necessary to fix the wire 12 to a place near the wall body 6. Scaffolding such as a stepladder may be placed at the location, and the wire 12 may be attached. Therefore, the construction is easy and can be done in a short time with a small number of people. Also, there is no need to set up scaffolding in various parts of the ceiling, so there is little impact on the room, and there is no movement of objects, so it is easy to install. Your work will also go faster. Further, since the wire 12 is a simple wire rod, it is not noticeable (it will be even less noticeable if it is made of the same color as the ceiling panel material), and therefore does not spoil the aesthetic appearance of the ceiling.

In this way, with the ceiling fall prevention structure according to this embodiment, it is possible to construct the prevention structure after the ceiling panel material is constructed, and the interior of the room does not need to be left open even during construction, making it ideal for offices, etc. Another advantage is that construction can be carried out while employees are present. Therefore, this ceiling fall prevention structure prevents the ceiling board material 4 from falling, and is also excellent in workability, and the arrangement and installation structure of the ceiling board material 4, wires 12, etc. are simple and economical.

4 Ceiling board material 6 Wall frame part 8 Hanging member 10 Ceiling bar material 12 Wire material
14 Anchors (anchors, etc.)
18 Holding part 20 Support part 56 End part 64 Tension adjuster (turnbuckle, etc.)

Claims (5)

In a ceiling structure in which wall parts are formed facing each other in a wall part, and hanging members forming a ceiling base are arranged in a ceiling part,
A support part that is suspended from the hanging member is erected in the center part, and a ceiling bar material having an inverted T-shaped cross section is provided with a flange-like holding part on each of the left and right parts,
An inverted U-shaped support with a hook-shaped engagement piece facing inward is formed at the lower end of the hanging member, and the elastic action of the support allows the engagement piece to be attached to the ceiling. Supporting the ceiling bar material by clamping and engaging with the lower part of the support part of the bar material;
A rectangular ceiling in which both ends are respectively placed on top of each of the holding parts of adjacent ceiling bars among the ceiling bars suspended from the hanging member and arranged parallel to each other. A suspended ceiling having a board,
The ceiling board material has a long side of 1000 mm to 2500 mm and a short side of 200 mm to 500 mm,
It has a wire rod stretched under the ceiling board material,
one end of the wire rod is attached to one of the wall skeleton parts, and the other end is attached to the other side of the wall skeleton part to ensure tension ;
The wire rods are respectively disposed on the lower side near both ends of the ceiling plate material,
Further, the wire rod is arranged in a direction parallel to the ceiling bar material and in a direction intersecting the long side of the ceiling board material,
Further, the wire rods are arranged under the ceiling board material with a gap of 20 mm to 100 mm so that the two do not touch,
When the ceiling board material comes off from the holding part of the ceiling bar material and falls off when the ceiling section shakes, the ceiling board material is received and held by the wire rod to prevent the ceiling board material from falling. Ceiling fall prevention structure. According to claim 1, the ceiling board material has a length of 1800 mm on a long side and a length of 300 mm on a short side, and the short side is arranged above a holding part of the ceiling bar material. The listed ceiling fall prevention structure. The ceiling fall prevention structure according to claim 1 or 2, wherein a metal wire or a non-metal rope is used as the wire. 4. The ceiling fall prevention structure according to claim 1, wherein a fixing device such as an anchor is fixed to the wall frame portion, and an end of the wire rod is fixed to the fixing device. 5. The ceiling fall prevention structure according to claim 4, wherein a tension adjuster is interposed between the fixing tool and the wire to adjust the tension of the wire.

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