JP6132131B2 - Ceiling material falling prevention mechanism and ceiling structure provided with the same - Google Patents

Description

  The present invention relates to a ceiling material drop prevention mechanism and a ceiling structure including the same.

  Conventionally, a suspended ceiling is often used as a structure of a ceiling portion of a building. For example, as shown in FIG. 6, a plurality of T bars (inverted T-shaped ceiling members having a cross section inverted in parallel with a predetermined interval in another direction T2 orthogonal to one direction T1 extending in one horizontal direction T1. Support member) 1 and a plurality of suspension bolts 2 which are fixed to the floor material (upper structure) on the upper floor and the lower end side connected to the T-bar 1 are adjacent to each other in the other direction T2. There is a ceiling structure A referred to as a line ceiling, a line type system ceiling, or the like that is configured to include a ceiling material (ceiling panel) 3 that is arranged so as to span the T-bar 1 and forms a ceiling surface 3a (for example, a patent) Reference 1).

On the other hand, in the ceiling structure A of this line type, sometimes the ceiling material 3 is large weight of equipment mounted, increases the response to a large seismic scale, to roll a large swing width with It may collide with surrounding walls and the like, and the ceiling material 3 and the equipment may be damaged. For this reason, conventionally, as shown in FIG. 6, the upper side of the ceiling material 3 is connected to the upper structure, the lower side is connected to the T bar 1 and the reinforcing brace 4 is provided. I try to suppress it.

JP 2005-350950 A

  However, in the above-described conventional ceiling structure A, the ceiling material 3 is disposed so as to support the both side end portions 3b of the T-bar 1 so that the ceiling material 3 rolls with the reinforcing brace 4. Even if it is suppressed, there is a problem that the side end 3b is detached from the T-bar 1 and the ceiling material 3 is easily dropped during an earthquake.

  In other words, in the line-type ceiling structure A, due to its configuration, a technique for suppressing rolls by adding a reinforcing brace 4 is the mainstream of earthquake-resistant repair, and is currently effective as a fall prevention measure for the ceiling material 3 There is no method, and development of a method for preventing the ceiling material 3 from falling has been strongly desired.

  In view of the above circumstances, an object of the present invention is to provide a ceiling material fall prevention mechanism for easily and reliably preventing a ceiling material from falling and a ceiling structure including the same.

  In order to achieve the above object, the present invention provides the following means.

The ceiling material drop-off prevention mechanism of the present invention includes a ceiling material support member provided to be supported by a building structure, and a plate-like ceiling material attached to the ceiling material support member to form a ceiling surface. A mechanism for preventing the ceiling material of the ceiling structure from falling off, and is connected to one end of the penetrating claw portion penetrating through the ceiling material so as to protrude from the ceiling surface side to the back of the ceiling And a ceiling material penetrating mounting member comprising a locking portion which is formed integrally and penetrates the ceiling claw portion through the ceiling material and is brought into contact with and locked to the ceiling surface, and disposed on the back surface side of the ceiling material. The ceiling back side mounting member that is connected to the penetrating claw portion and is provided integrally with the ceiling material via the ceiling material penetration mounting member, and the suspension member that is integrally attached to the ceiling material support member, One end to the ceiling back side mounting member and the other end to the front Comprising a suspension member and provided respectively connected to Tsumoto member and the ceiling member through the mounting member, and connected to a plate of the locking part, one end in the circumferential edge of the locking portion, the locking The through claw portion projecting substantially orthogonal to the plate surface contacting the ceiling surface of the stop portion, and the ceiling back side mounting member has a plate-like bottom portion that contacts the back surface of the ceiling material, and one end. A plate-like claw connection portion that is connected to the bottom and protrudes substantially orthogonally, and the ceiling material penetrating attachment member is disposed by penetrating the through claw portion through the ceiling material, and the ceiling back the pawl connecting portion is engaged with, characterized in that it is configured to connect the ceiling rear mounting member and the ceiling member through the mounting member into the through claw portion by bending the through claw portion protruding .

In this invention, the penetrating claw portion is passed through the ceiling material from the ceiling surface side to attach the ceiling material penetrating mounting member, the ceiling back side mounting member is attached to the back side of the ceiling material by connecting to the penetrating through claw portion, The suspension member is attached to a ceiling material support member such as a T-bar (ceiling base material). And a ceiling material and a ceiling material support member can be easily connected through a suspension material by providing suspension materials, such as a wire rope, respectively connecting to a ceiling back side attachment member and a suspension base member.
In addition, for example, by folding the penetrating claw part protruding from the back of the ceiling so as to sandwich the claw connecting part, the penetrating claw part and the claw connecting part can be locked. It can be connected easily and firmly. Thereby, a ceiling material and a ceiling material support member can be connected more easily and reliably.

  Further, the ceiling structure of the present invention includes a ceiling material support member provided to be supported by a building structure, a plate-like ceiling material attached to the ceiling material support member to form a ceiling surface, and any of the above And a ceiling material drop-off prevention mechanism.

  In this invention, by providing the above-described ceiling material drop-off prevention mechanism, it is possible to obtain the operational effects of the above-described ceiling material drop-off prevention mechanism.

  In the ceiling material drop-off prevention mechanism and the ceiling structure provided with the same according to the present invention, the ceiling material penetrating attachment member is attached from the ceiling surface side, and the ceiling material penetrating attachment member is attached to the back surface side of the ceiling material by connecting to the penetrating claw portion. By attaching the suspension member to a ceiling material support member such as a T-bar (ceiling base material) and connecting the suspension material such as a wire rope to the ceiling back side attachment member and the suspension member, the suspension member can be easily passed through the suspension material. The ceiling material and the ceiling material support member can be connected. Thereby, even if a side edge part remove | deviates from a ceiling material support member at the time of an earthquake and a ceiling material is likely to drop, since it is connected to the ceiling material support member through the suspension material, it can prevent that a ceiling material falls.

It is a perspective view which shows the ceiling structure and ceiling material drop-off prevention mechanism which concern on one Embodiment of this invention. It is a figure which shows the ceiling material drop-off prevention mechanism which concerns on one Embodiment of this invention. It is a figure which shows the ceiling material penetration attachment member of the ceiling material fall-off prevention mechanism which concerns on one Embodiment of this invention. It is a figure which shows the state which attached the ceiling material penetration attachment member and the ceiling back side attachment member of the ceiling material fall-off prevention mechanism which concerns on one Embodiment of this invention. It is a figure which shows the ceiling back side attachment member and suspension member of the ceiling material drop-off prevention mechanism which concerns on one Embodiment of this invention. It is a perspective view which shows the conventional ceiling structure.

  Hereinafter, a ceiling material drop prevention mechanism and a ceiling structure including the same according to an embodiment of the present invention will be described with reference to FIGS.

  As shown in FIG. 1, the ceiling structure B of the present embodiment is a line-type ceiling structure in which a heavy equipment such as a fan filter unit is installed like a clean room. The ceiling structure B is a plurality of parallelly arranged at predetermined intervals in the other direction T2 extending in one horizontal direction T1 and orthogonal to the one direction T1, like the conventional ceiling structure A shown in FIG. The ceiling material support member 1 and a plurality of suspension bolts, the upper end side of which is connected to an upper structure (building structure) such as an upper floor material and the lower end side of the ceiling material support member 1 is connected to the ceiling material support member 1 2 and a ceiling material (ceiling panel) 3 which is arranged so as to bridge over the ceiling material support member 1 adjacent in the other direction T2 and forms the ceiling surface 3a, and the upper structure is connected to the upper structure to support the ceiling material A gusset plate 5 is provided with one end connected to the member 1 and a reinforcing brace 4 obliquely provided with a lower end connected thereto.

  In the present embodiment, as the ceiling material support member 1, the ceiling material support bottom portion 1a that extends in the horizontal directions T1 and T2 and supports the side end portion 3b of the ceiling material 3 mounted thereon, and the width of the ceiling material support bottom portion 1a A T-bar having a reverse T-shaped cross section composed of a suspension bolt connecting portion 1b projecting upward from approximately the center in the direction is applied. The reinforcing brace 4 is connected to the T-bar 1 by screwing the lower end side to the gusset plate 5 (screw 6).

  On the other hand, the ceiling structure B of the present embodiment includes a ceiling material dropout prevention mechanism C for preventing the ceiling material 3 from falling off, as shown in FIGS. 1 and 2. The ceiling material drop prevention mechanism C includes a ceiling material penetration mounting member 10, a ceiling back side mounting member 11, a suspension base member 12, and a suspension material (suspending rope) 13.

  Further, as shown in FIGS. 2, 3, and 4, the ceiling material penetrating mounting member 10 includes a through claw portion 10a that penetrates the ceiling material 3 so as to protrude from the ceiling surface 3a side to the back of the ceiling, and the through claw. It is integrally formed by connecting to one end of the portion 10a, and is provided with a locking portion 10b that penetrates the ceiling claw portion 10a through the ceiling material 3 and is locked in contact with the ceiling surface 3a. Moreover, the ceiling material penetration mounting member 10 of this embodiment is a metal member using, for example, a hot dip galvanized steel sheet having a plate thickness of about 1 mm, and a locking portion 10b formed in a rectangular flat plate shape, A lower end (one end) is connected to an intermediate position between a pair of side end portions (peripheral ends) of the locking portion 10b in parallel, and is projected substantially orthogonal to a lower surface (plate surface) that contacts the ceiling surface 3a of the locking portion 10b. And two through claws 10a. Each penetrating claw portion 10a is formed in a sharp shape so as to extend from the lower end to the upper end side with a constant width dimension, and gradually decrease in width dimension as the upper end goes upward. For example, the penetrating claw portion 10a is formed with the constant width dimension t1 of about 4 to 5 mm and a length dimension t2 from the lower end to the upper end of about 45 mm.

  The ceiling material penetrating mounting member 10 pierces the ceiling material 3 from the ceiling surface 3a side while pushing the locking portion 10b so that the locking portion 10b comes into surface contact with the ceiling surface 3a. To penetrate. Thus, the ceiling material penetrating attachment member 10 is attached to the ceiling material 3 with the two penetrating claw portions 10a protruding to the back of the ceiling by a simple operation of penetrating the two penetrating claw portions 10a. In addition, if the ceiling material penetration attachment member 10 is attached, the latching | locking part 10b will be exposed to the ceiling surface 3a. For this reason, for example, a seal provided with a color, a pattern, and the like of the ceiling surface 3a of the ceiling material 3 is prepared in advance, and the ceiling material penetrating attachment member 10 is attached by sticking this seal to the locking portion 10b. This may prevent the design of the suspended ceiling B from being damaged.

  The ceiling back side attachment member 11 is a metal member using, for example, a hot dip galvanized steel sheet having a plate thickness of about 1 mm, and as shown in FIGS. 2, 4, and 5, A lower end (one end) is connected to both side end portions of the bottom portion 11a, and a pair of rectangular flat plate-like claw connecting portions 11b which are side walls protruding substantially orthogonally are formed in a U shape. Further, a claw insertion hole 11c penetrating from the outer surface to the inner surface of the ceiling back side mounting member 11 is formed at a corner portion (or in the vicinity of the corner portion) connecting each side end portion of the bottom portion 11a and the lower end of each claw connection portion 11b. ing. Furthermore, a suspension member connection hole 11d for connecting one end of the suspension member 13 is formed on one claw connection portion 11b on the upper end (other end) side, penetrating from the outer surface to the inner surface.

  And this ceiling back side attachment member 11 inserts each penetration nail | claw part 10a of the ceiling material penetration attachment member 10 which protrudes in the ceiling back from the ceiling surface 3a side in each claw penetration hole 11c, and the bottom part 11a is the back surface of the ceiling material 3 It is disposed on the back surface 3c side of the ceiling material 3 in a state of being in contact with 3c. Furthermore, in this embodiment, the ceiling back side mounting member 11 is inserted into the claw insertion hole 11c and the penetrating claw portion 10a extended upward along the inner surface is, for example, approximately 180 ° near the upper end of the claw connection portion 11b. The ceiling material penetrating mounting member 10 is connected and held by bending the claw connecting portion 11b and engaging the claw connecting portion 11b with the penetrating claw portion 10a. Through the ceiling material penetrating mounting member 10, the ceiling material 3 is connected. And are arranged integrally.

  In addition, if the claw connection part 11b can be locked to the penetration nail | claw part 10a and the ceiling back side attachment member 11 and the ceiling material penetration attachment member 10 can be connected, it is necessary to limit the angle which bends the penetration claw part 10a. There is no. Moreover, if it is possible to connect the ceiling back side attachment member 11 and the ceiling material penetration attachment member 10, the penetration nail | claw part 10a and a nail | claw connection part are obtained by bend | folding the penetration nail | claw part 10a and latching it to the claw connection part 11b. It is not necessary to limit to the structure which connects 11b and by extension, the ceiling back side attachment member 11 and the ceiling material penetration attachment member 10. FIG.

  The suspension member 12 is a metal member using, for example, a hot-dip galvanized steel sheet having a thickness of about 1 mm, and is integrally attached to the T bar of the ceiling material support member 1 as shown in FIGS. 1 and 2. It is done. Further, the suspension member 12 of the present embodiment is formed in a flat plate shape, and a suspension member attachment portion 12b in which a suspension member connection hole 12a for connecting the other end of the suspension member 13 is formed, and suspension member attachment One end is connected to the portion 12a and extends, and the support member mounting fixing portion 12c is fixed to the suspension bolt connecting portion 1b of the T-bar 1 by, for example, bolts.

  The suspension member 13 of the present embodiment includes, for example, a metal wire rope (suspending rope) such as SUS304 having a wire diameter of about 1 mm, and one end is connected to the suspension member as shown in FIGS. While being inserted into the hole 11d, the wire rope itself is solidified, and this one end side is formed in an annular shape so as to be connected to the ceiling back side mounting member 11. Moreover, the clip 13a is attached to the other end of the suspension member 13, and the clip 13a is detachably connected to the suspension base member 12 by engaging the suspension member connection hole 12a. In the present embodiment, as the clip 13a, for example, an insulator made of iron and nickel-plated can be used. Further, the length t3 of the suspension member 13 is preferably about 200 mm.

  In this embodiment, the suspending material 13 is a wire rope (suspending rope) provided with a clip 13a. However, the suspending material according to the present invention has one end suspended from the ceiling back side mounting member 11 and the other end suspended. What is necessary is just to be able to connect to the original member 12 and to support a ceiling material, for example, a spring etc. may be sufficient.

  The ceiling material drop-off prevention mechanism C of the present embodiment having the above-described configuration attaches the ceiling material penetration mounting member 10 to the ceiling material 3 through the two penetration claws 10a, and each of the penetration claws 10a protruding to the back of the ceiling. The ceiling material penetrating mounting member 10 is connected to the ceiling back side mounting member 11 by being inserted into the claw insertion hole 11c and bent. Further, the support member attachment fixing portion 12 c is attached to the suspension bolt connecting portion 1 b of the T bar 1 using a bolt or the like, and the suspension member 12 is attached to the T bar 1. Further, the suspension member 13 provided in advance with one end connected to the suspension member connection hole 11d of the ceiling member rear side attachment member 11 is connected to the suspension member 12 by attaching the clip 13a to the suspension member connection hole 12a.

  By such a simple operation, the T-bar 1 and the ceiling material 3 are connected via the hanging material 13 or the like (ceiling material drop prevention mechanism C). As a result, even if the ceiling structure B is shaken and the side end part is detached from the T-bar 1 and the ceiling material 3 is likely to fall off during an earthquake, the ceiling structure B is connected to the T-bar 1 through the suspension member 13 provided with a wire rope. As a result, the detached ceiling material 3 is suspended and supported, and is prevented from falling off.

〔Example〕
Here, the test result which confirmed the performance of the ceiling material drop-off prevention mechanism C of the present embodiment will be described. In this performance test, two types of tests were conducted: a static tensile test and a full-scale drop test.

  First, in the static tensile test, a rock wool sound absorbing board (ceiling material 3) having a board thickness of 15 mm, two penetrating claws 10a having a board thickness of 0.8 mm, a length of 55 mm, and a width t1 of 4 mm, and a board A ceiling material penetrating attachment member 10 formed with a locking portion 10b having a thickness of 0.8 mm and a length and width of 20 mm × 20 mm is attached, and the penetrating claw portion 10a of the ceiling material penetrating attachment member 10 is at an angle of 40 to 50 °. The ceiling back side attachment member 11 and the ceiling material penetration attachment member 10 were connected by bending and engaging the claw connection part 11b with the penetration claw part 10a.

  The wire rope suspension member 13 is connected to the ceiling material penetrating attachment member 10 and the suspension base member 12, and the suspension base member is pulled upward while holding the rock wool sound absorbing plate (ceiling material 3), and the ceiling back side attachment member 11 and The connection maximum load of the ceiling material penetration mounting member 10 was measured. As a result, in the static tensile test conducted three times, the maximum load was 76.6N, 89.6N, 81.4N, and the average maximum load was 82.6N, and the rock wool sound absorbing board (ceiling material 3) was sufficiently removed. It was confirmed that a very large load that could be prevented could be supported.

  Next, in the full-scale drop test, a ceiling back side mounting member 11 and a ceiling material were applied to a rock wool sound absorbing board (ceiling material 3) having a plate thickness of 15 mm, length and width of 400 × 1825 mm, and a weight of 3.65 kg, as in the static tensile test. The through attachment member 10 was attached, and the wire rope suspension 13 was connected to the ceiling material penetration attachment member 10 and the suspension base member 12.

  At this time, in the full-scale drop test, when the penetration claw portion 10a of the ceiling material penetration mounting member 10 is locked to the claw connection portion 11b, the bending angle is 40 ° in case 1 and case 2, and in case 3, The bending angle was approximately 180 ° as shown in FIG. The rock wool sound absorbing board (ceiling material 3) was dropped at a drop height of 300 mm for case 1 and 200 mm for case 2 and case 3, and the state of the ceiling material dropout prevention mechanism C was confirmed. In addition, this fall height means the length of the suspension material 13.

  As a result, in case 1 having a folding angle of 40 ° and a drop height of 300 mm, the bent through claw portion 10a was opened, and it was confirmed that the ceiling material 3 might fall off. Next, in case 2 with a folding angle of 40 ° and a drop height of 200 mm, it was confirmed that the opening of the bent through claw portion 10a was small and the ceiling material 3 was sufficiently held. Furthermore, in the case 3 with a bending angle of 180 ° and a drop height of 200 mm, even if the drop test is repeated three times, the bent through claw portion 10a does not open and the ceiling material 3 can be reliably held. confirmed.

  From this result, in the ceiling material drop prevention mechanism C of the present embodiment, when the penetration claw portion 10a of the ceiling material penetration mounting member 10 is locked to the claw connection portion 11b, the bending angle is set to about 180 °, and the suspension material 13 It was confirmed that the falling of the ceiling material 3 can be more reliably prevented by setting the length of the wall to about 200 mm.

  Therefore, in the ceiling material drop-off prevention mechanism C of the present embodiment, the ceiling material penetrating attachment member 10 is attached by penetrating the through claw portion 10a from the ceiling surface 3a to the ceiling material 3 and connected to the penetrating through claw portion 10a. The ceiling back side attachment member 11 is attached to the back side of the ceiling material 3, and the suspension member 12 is attached to the ceiling material support member 1 such as a T-bar. And the ceiling material 3 and the ceiling material support member 1 can be easily connected through the suspension material 13 by providing the suspension material 13, such as a wire rope, by connecting to the ceiling back side attachment member 11 and the suspension base member 12, respectively. .

  Further, the penetrating claw portion 10a protruding to the back of the ceiling is bent to sandwich the claw connecting portion 11b, and the penetrating claw portion 10a and the claw connecting portion 11b are locked to easily attach the ceiling material penetrating mounting member 10 and the ceiling back side mounting member 11 to each other. And it can connect firmly. Thereby, the ceiling material 3 and the ceiling material support member 1 can be connected more easily and reliably.

  Therefore, according to the ceiling material drop-off prevention mechanism C and the ceiling structure B including the same according to the present embodiment, even if the side end portion is detached from the ceiling material support member 1 and the ceiling material 3 is likely to fall off during an earthquake, the suspension is suspended. Since it is connected to the ceiling material support member 1 through the material 13, it is possible to prevent the ceiling material 3 from falling off. Moreover, this ceiling material drop prevention mechanism C can be easily installed and applied to a structure of an existing ceiling portion as well as a new installation.

  As mentioned above, although one embodiment of the ceiling material drop prevention mechanism and the ceiling structure provided with the same according to the present invention has been described, the present invention is not limited to the above-described one embodiment, and does not depart from the spirit thereof. It can be changed as appropriate.

  For example, in the present embodiment, the ceiling structure includes a T-bar as the ceiling material support member 1 and is configured by supporting the ceiling panel of the ceiling material 3 on the T-bar. However, the ceiling material drop-off preventing mechanism C may be applied to a ceiling structure including a ceiling base material such as a field edge and a field edge support as a ceiling material support member. It is not necessary to limit the structure of the structure as in this embodiment.

1 T bar (ceiling support member)
2 Suspension bolt (suspending member)
3 Ceiling materials (ceiling panels)
3a Ceiling surface 3b Side end 3c Back surface 4 Reinforcement brace 5 Gusset plate 6 Screw 10 Ceiling material penetration mounting member 10a Through claw portion 10b Locking portion 11 Ceiling back side mounting member 11a Bottom portion 11b Claw connection portion 11c Claw insertion hole 11d Hanging material connection Hole 12 Suspension member 12a Suspension material connection hole 12b Suspension material attachment portion 12c Support member attachment fixing portion 13 Suspension material 13a Clip A Conventional ceiling structure B Ceiling structure C Ceiling material drop prevention mechanism T1 Horizontal one direction T2 Horizontal other direction T3 vertical direction

Claims (2)

A ceiling material support member provided to be supported by a structure of a building and a plate-like ceiling material that is attached to the ceiling material support member and forms a ceiling surface. A mechanism for preventing,
A penetrating claw portion that penetrates the ceiling material so as to protrude from the ceiling surface side to the ceiling, and is integrally connected to one end of the penetrating claw portion, penetrating the penetrating claw portion through the ceiling material and A ceiling material penetrating mounting member composed of a locking portion that is locked in contact with the ceiling surface;
A ceiling back side mounting member disposed on the back side of the ceiling material, connected to the penetrating claw portion, and provided integrally with the ceiling material via the ceiling material penetration mounting member;
A suspension member attached integrally to the ceiling material support member;
A suspension member provided with one end connected to the ceiling back side mounting member and the other end connected to the suspension base member,
Further, the ceiling material penetrating mounting member has one end connected to the plate-shaped locking portion and a peripheral end of the locking portion, and protrudes substantially perpendicular to the plate surface in contact with the ceiling surface of the locking portion. The penetrating claw portion provided,
The ceiling back side mounting member includes a plate-like bottom portion that comes into contact with the back surface of the ceiling material, and a plate-like claw connection portion that protrudes substantially orthogonally, with one end connected to the bottom portion,
The ceiling material penetrating attachment member is disposed by penetrating the through claw portion through the ceiling material, and the through claw portion protruding to the back of the ceiling is bent to lock the claw connecting portion to the through claw portion. The ceiling material drop-off preventing mechanism is configured to connect the ceiling material penetration mounting member and the ceiling back side mounting member. A ceiling material support member provided to be supported by a structure of a building, a plate-like ceiling material that is attached to the ceiling material support member to form a ceiling surface, and the ceiling material drop prevention mechanism according to claim 1. A ceiling structure characterized by comprising.

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