JP6633443B2 - Ceiling system - Google Patents

Description

  The present invention relates to a ceiling system for forming a ceiling in a building.

  As this type of ceiling system, for example, as shown in Patent Literature 1, a large number of ceiling materials forming a ceiling surface are supported on an upper floor by a ceiling material suspension structure, and ceiling installation equipment is suspended by equipment. There is a structure in which a ceiling is formed by being supported on an upper floor in a lower structure.

In the ceiling system described in Patent Literature 1, the ceiling material suspension structure is configured to support the ceiling base on which the ceiling material is mounted on the upper floor with hanging bolts. In addition, the equipment suspension structure is configured to support the ceiling-embedded lighting device as ceiling installation equipment on the upper floor using a suspension bolt different from the ceiling material suspension structure.
Therefore, in the ceiling system described in Patent Literature 1, the load of the ceiling-embedded lighting device does not act on the ceiling material suspension structure, and the burden weight of the ceiling material suspension structure (that is, the weight of the ceiling) is reduced. Has been reduced.
When the burden weight of the ceiling material suspension structure is reduced in this way, it is advantageous against the shaking of the earthquake, and it is possible to suppress the ceiling from falling off during an earthquake, and to reduce the weight even if the ceiling falls off Damage can be reduced by the minute.

JP 2014-127320 A

By the way, ceiling-mounted devices are not limited to devices embedded in the ceiling, such as embedded lighting devices, and there are also devices that project downward from the ceiling. In addition, ceiling-mounted equipment is not limited to relatively large-sized equipment such as an embedded lighting device that can easily perform an opening process for making a hole for embedding in a ceiling material, and a small-sized device that is difficult to perform an opening process for a ceiling material. There is also equipment. Therefore, such a ceiling-mounted device cannot simply adopt a suspension structure similar to that of an embedded lighting device.
However, even for such ceiling-mounted equipment, the weight of the ceiling material suspension structure is further reduced by supporting it on the upper floor using the equipment suspension structure without burdening the ceiling material suspension structure. However, it is desired to further suppress the falling off of the ceiling during an earthquake and further reduce the damage at the time of falling off the ceiling.

  In view of this situation, a main problem of the present invention is that various ceiling-installed equipment can be efficiently supported on the upper floor by the equipment suspension structure without burdening the ceiling material suspension structure, An object of the present invention is to provide a ceiling system capable of satisfactorily reducing the burden weight (so-called ceiling weight) of a ceiling material suspension structure.

According to a first characteristic configuration of the present invention, a large number of ceiling materials forming a ceiling surface are supported on an upper floor by a ceiling material suspension structure, and ceiling installation equipment is mounted on the upper floor by a device suspension structure. A ceiling system configured to support the ceiling,
The device hanging structure is configured to support the ceiling-installed equipment on the upper floor, in a state where the load of the ceiling-mounted device is not borne by the ceiling material hanging structure,
A first equipment suspension structure for supporting the ceiling installation equipment attached to the equipment free panel to an upper floor, via an equipment free panel to which a plurality of types of ceiling installation equipment can be attached,
And a second equipment suspension structure for supporting ceiling-installed equipment on the upper floor without using the equipment free panel.

According to the above configuration, in order to support the ceiling installation device on the upper floor and the floor in a state where the load of the ceiling installation device is not burdened by the ceiling material suspension structure in the equipment suspension structure, a plurality of types of ceiling installation devices are attached. It is possible to appropriately adopt a first device suspension structure that supports the device via a possible equipment free panel and a second device suspension structure that supports the device without the device free panel.
Therefore, for example, ceiling installation equipment such as equipment or small equipment that protrudes from the lower surface of the ceiling is efficiently supported by the first suspension structure in a well-fitted state using the equipment free panel, and Ceiling-mounted devices such as embedded devices and large-sized devices can be efficiently supported by the second device suspension structure without using a facility free panel.
Therefore, various ceiling-installed devices can be efficiently supported on the upper floor by the device suspension structure in a state where the ceiling material suspension structure does not bear the weight. , The weight of the ceiling) can be successfully achieved.

A second characteristic configuration of the present invention is that the ceiling is configured as a line ceiling having a line-shaped equipment zone where the ceiling material is not arranged, and the first equipment suspension structure and the second equipment suspension are provided in the equipment zone. It is configured so that ceiling installation equipment is arranged in the lower structure,
The equipment free panel has a width substantially corresponding to the width of the line-shaped equipment zone,
The first equipment suspension structure is configured such that the equipment free panel can be freely arranged in the line-shaped equipment zone, and the arrangement position of the equipment free panel can be freely changed in the length direction of the equipment zone. There is in the point.

According to the above configuration, the first equipment suspension structure allows the free equipment panel to be disposed in the line-shaped equipment zone on the line ceiling, and sets the arrangement position of the equipment free panel in the length direction of the equipment zone. Since it is configured to be changeable, the equipment free panel can be disposed at an appropriate position in the length direction of the linear equipment zone. Therefore, while avoiding ceiling-mounted equipment (for example, large-sized equipment) arranged in a line-shaped equipment zone in the second equipment suspension structure, ceiling-mounted equipment attached to the equipment free panel in the first equipment suspension structure (For example, small-sized equipment) can be arranged in a line-shaped equipment zone, and various ceiling-installed equipment can be appropriately arranged in a line-shaped equipment zone on a line ceiling.
In addition, since the equipment free panel is configured to have a width substantially corresponding to the width of the line-shaped equipment zone, the equipment free panel is installed in the line-shaped equipment zone on the line ceiling, and the line is formed by the equipment free panel. Can be substantially closed. Therefore, the ceiling-mounted equipment can be disposed in the line-shaped equipment zone with good appearance in the first equipment suspension structure.

  A third characteristic configuration of the present invention is such that the first equipment suspension structure disposes the equipment free panel in the equipment zone in a state where the equipment free panel is slidable along a length direction of the linear equipment zone. The point is that it is composed.

According to the above configuration, in a state where the equipment free panel is provided in the line-shaped equipment zone on the line ceiling, the position of the equipment free panel is adjusted by sliding the equipment free panel along the length direction of the line-shaped equipment zone. Thereby, the equipment free panel can be easily arranged at an appropriate position in the length direction of the line-shaped equipment zone.
Also, if there is a request to change the layout of ceiling-mounted equipment in the future, the equipment free panel can be easily moved by sliding along the length of the linear equipment zone to change the position. can do.

According to a fourth characteristic configuration of the present invention, in the first equipment suspension structure, a first locked member supported on an upper floor and capable of locking with a locking portion provided on the equipment free panel. Department is provided,
The locking portion of the equipment free panel and the first locked portion are locked as the equipment free panel approaches the first locked portion supported by the upper floor from below. It is configured to be possible.

According to the above configuration, by locking the first locked portion supported by the upper floor and the locking portion of the equipment free panel, the equipment free panel can be lifted in the first equipment suspension structure. It can be properly supported on the floor.
Moreover, the locking portion of the equipment free panel is locked to the first locked portion supported on the upper floor by a simple operation of moving the equipment free panel to which the ceiling installation device is attached to the ceiling side. be able to.

According to a fifth characteristic configuration of the present invention, in the first equipment suspension structure, a first locked member supported on an upper floor and capable of locking with a locking portion provided on the equipment free panel. Department is provided,
An equipment fixing member capable of fixing ceiling-mounted equipment to the equipment free panel is provided, and the equipment fixing member has a fixing posture in which the equipment fixing member is fixed to fix the ceiling-mounted equipment. The present invention is characterized in that a second locked portion which can be locked with the locking portion is provided.

According to the above configuration, by locking the first locked portion supported by the upper floor and the locking portion of the equipment free panel, the equipment free panel can be lifted in the first equipment suspension structure. It can be properly supported on the floor.
Further, by locking the second locked part provided on the equipment fixing member and the locking part of the equipment free panel in a state where the equipment fixing member is in a fixed posture for fixing the ceiling-mounted equipment, the equipment free panel is fixed. The ceiling-mounted equipment can be properly fixed.
Moreover, the locking portion of the equipment free panel is used for locking the first locked portion supported on the upper floor and for locking the second locked portion provided on the equipment fixing member. Since the structure is shared, the structure can be simplified.

A sixth characteristic configuration of the present invention is that the ceiling material includes a ceiling base material formed by molding a fibrous material into a rectangular plate shape, and a pair of opposing side portions of an outer peripheral portion of the ceiling base material. A bending deformation suppressing member attached to each of the members,
The ceiling material suspension structure is provided with a ceiling material receiving portion that is supported by the upper floor and receives the outer peripheral portion of the ceiling material from below,
A point that the ceiling material is bridged between the pair of adjacent ceiling material receiving portions in a state where the pair of bending deformation suppressing members spans the pair of adjacent ceiling material receiving portions. It is in.

According to the above configuration, a lightweight ceiling base material formed into a rectangular plate shape with a fibrous material can be appropriately reinforced by a bending deformation suppressing member, and is excellent in that bending deformation is suppressed while being lightweight. Ceiling material can be configured.
Then, by using the bending deformation suppressing member provided on the ceiling member as a frame member, the ceiling member can be appropriately installed in a state where it is difficult to fall between a pair of adjacent ceiling member receiving portions.

A seventh characteristic configuration of the present invention is that the bending deformation suppressing member is adhesively bonded to each of a pair of opposing sides of the ceiling base material,
The ceiling material is provided with a nonflammable or flame-retardant, flexible surface material that covers at least a lower surface portion on the indoor side of the ceiling base material,
Both ends of the surface material are bonded and bonded to each of the bending deformation suppressing members on a pair of opposing sides of the ceiling base material.

According to the above configuration, the fire resistance of the ceiling material can be improved by the non-combustible or flame-retardant surface material that covers at least the lower surface portion on the indoor side of the ceiling base material, thereby suppressing the spread of fire during a fire. can do.
Moreover, the flexible surface material is not directly bonded and bonded to a pair of sides of the ceiling base material formed by forming a fibrous material into a rectangular plate shape, but rather than the ceiling base material. Since it is adhesively bonded via a bending deformation suppressing member that is difficult to bend, for example, it becomes possible to attach the surface material to the ceiling base material in a state where a strong tensile force is applied in the surface direction of the surface material, and the surface material becomes wrinkled. A beautiful ceiling without any can be constructed.

Perspective view looking up from below the ceiling system Sectional view showing suspension points of equipment free panels Perspective view showing the main part of the suspension point of the equipment free panel Sectional view showing the installation method of the equipment free panel A perspective view showing a main part of a mounting portion of a bar material. Sectional drawing which shows the attachment place of the ceiling installation equipment by a 1st equipment suspension structure The perspective view which shows the principal part of the attachment place of the ceiling installation equipment by a 1st equipment suspension structure. Sectional view showing how to attach ceiling installation equipment to the equipment free panel Sectional drawing which shows the attachment place of the ceiling installation equipment by a 2nd equipment suspension structure Sectional drawing which shows the attachment place of the ceiling installation equipment by a 2nd equipment suspension structure (A) Exploded view of ceiling material, (b) Cross-sectional view of ceiling material in short direction Sectional view showing the ceiling repair process

An embodiment of a ceiling system according to the present invention will be described with reference to the drawings.
FIG. 1 illustrates a ceiling system employed in an office building, which is an example of a building, as viewed from below. In this drawing, for the sake of convenience, the ceiling material 2 forming the ceiling surface is illustrated with some ceiling materials 2 removed.

In the example of FIG. 1, the ceiling system is provided with narrow line-shaped equipment zones A at a constant pitch in the X direction, and a large number of ceiling materials 2 forming a ceiling surface between the equipment zones A in the Y direction. Is constructed as a line ceiling (an example of a system ceiling) provided with a general ceiling zone B connected continuously to the ceiling. In each equipment zone A, as the ceiling installation equipment 1, a relatively large ceiling installation equipment 1B such as a narrow line lighting device or a blow-out port or an intake port, and a fire detector, an emergency broadcast port, or an emergency lighting. A small ceiling-mounted device 1A such as a device is provided.
Note that the ceiling system according to the present invention is not limited to such a line ceiling, but can be applied to various ceilings such as a grid ceiling.

  In the ceiling system, the ceiling material 2 is supported by a floor slab (an example of an upper floor portion) S on the upper floor in the ceiling material suspension structure T, and the equipment suspension is different from the ceiling material suspension structure T. In the lower structure K, the ceiling installation apparatus 1 is configured to support the ceiling slab S on the upper floor to form a ceiling without a load being applied to the ceiling material suspension structure T.

  Further, in the ceiling system, as the equipment suspension structure K, the small ceiling-installed equipment 1A is supported by the floor slab S on the upper floor via the equipment free panel 8 to which a plurality of types of small ceiling-installed equipment 1A can be attached. A first equipment suspension structure K1 (see FIG. 6) and a second equipment suspension structure K2 (see FIG. 6) that mainly support the large ceiling-mounted equipment 1B on the upper floor slab S without interposing such a facility free panel 8. 9 and 10).

Therefore, in this ceiling system, the first equipment suspension structure K1 and the second equipment suspension structure K2 are properly used according to the type of the ceiling installation equipment 1, so that the ceiling material suspension structure T has a weight. Can be efficiently supported on the floor slab S on the upper floor by the equipment suspension structure K without burdening the ceiling material, and the burden weight of the ceiling material suspension structure T (the so-called ceiling weight) ) Can be satisfactorily achieved.
Hereinafter, each suspension structure will be described.

(Ceiling material suspension structure)
As shown in FIG. 1, in the ceiling material suspension structure T, a large number of suspension bolts 3A (an example of suspension tools) embedded on the lower surface of the floor slab S on the upper floor, and attached to the lower end side of the suspension bolts 3A. And a plurality of bar members 5 extending in the Y direction attached to the lower surface side of the field edge receiver 4.
In the ceiling material suspension structure T, the ceiling material 2 is erected between the bar materials 5 adjacent to each other with the general ceiling zone B interposed therebetween. It can be supported by the floor slab S on the floor.

The edge support 4 is made of, for example, a long material made of a steel material such as a C-type steel, and is arranged over the entire ceiling in a posture extending in the X direction and arranged at a constant pitch along the Y direction. Has been established. Each field support 4 is suspended and supported on the upper floor slab S via a field support hanger 6 attached to the lower ends of a plurality of suspension bolts 3A located immediately above.
In this ceiling system, since the burden weight of the ceiling material suspension structure T is greatly reduced as described above, the arrangement pitch of the edge supports 4 is increased to reduce the number of the edge supports 4. It is also possible. By doing so, the burden weight of the ceiling material suspension structure T can be further reduced by the reduction in the number of the margin supports 4.

  The bar member 5 is made of, for example, a long member made of an aluminum alloy, steel, or the like, is disposed in a position extending in the Y direction, and is disposed at a plurality of positions in the X direction across the general ceiling zone B. I have. In the present embodiment, the bar members 5 are disposed at each boundary between the general ceiling zone B and the equipment zone A. Each bar member 5 is attached to the field edge support 4 via a bar material hanger 7 attached to the field edge receiver 4.

  As shown in FIGS. 12C and 5, the bar member 5 has a field edge mounting portion 5 </ b> A that can be mounted to the field edge receiver 4, and a ceiling material receiving portion that can receive and support the ceiling material 2. 5B, and is configured to receive and support the ceiling material 2 in a state where the ceiling material 2 is attached to the field margin receiver 4. Each bar member 5 is disposed in a relative posture in which the ceiling member receiving portion 5B faces the general ceiling zone B.

The edge receiving mounting portion 5A includes an upper end side horizontal plate portion 5b protruding from the upper end portion of the substrate portion 5a in a substantially vertical position along the vertical direction to the left and right outer sides in a horizontal position along the left and right width direction; It is constituted by a pair of engaged concave portions 5e having a downward opening formed on the lower surface side of the upper side horizontal plate portion 5b. Each engaged concave portion 5e is configured by bending both left and right end portions of the upper end side horizontal plate portion 5b downward.
The edge receiving mounting portion 5A is configured such that the upper surface of the upper side horizontal plate portion 5b is brought into contact with the lower surface portion of the field edge receiving member 4, and a pair of engaged recesses on the lower surface side of the upper side horizontal plate portion 5b. By engaging an engaging claw 7b of the bar material hanger 7 attached to the field support 4 with the bar material 5 via the bar material hanger 7, the bar material 5 can be stably stuck to the field support 4 with 5e. Can be attached to

  At the upper end side of the substrate portion 5a, a bent plate bent in an L-shape for displacing the position of the ridge receiving mounting portion 5A toward the general ceiling zone B to secure a wide space on the equipment zone A side. A portion 5f is provided. In the event of an earthquake, the bent plate portion 5f allows the swing range of the bar member 5 with the ridge receiving attachment portion 5A as a fulcrum to be adjusted with the bent corner portion of the engaging claw portion 7b of the bar material hanger 7. The ceiling member 2 can be prevented from falling off due to a large inclination of the bar member 5 due to the contact.

  The ceiling material receiving portion 5B is composed of a lower end side horizontal plate portion 5g protruding from the lower end portion of the substrate portion 5a to one of the left and right general ceiling zones B in a lateral posture along the left-right width direction. The ceiling material receiving portion 5B is configured such that each of the end portions of the ceiling material 2 is placed on the upper surface side of each of the lower end side horizontal plate portions 5g of the bar material 5 facing each other with the general ceiling zone B interposed therebetween. 2 can be received and supported.

In the portion of the substrate portion 5a which is deviated upward from the lower end side horizontal plate portion 5g by the thickness of the ceiling material 2, a drop-off suppressing plate portion 5h (which serves as a drop-off suppressing portion) protruding laterally toward the general ceiling zone B side. Example) is formed.
The falling-off prevention plate portion 5h is arranged at a position near and facing the upper surface of the ceiling material 2 with the end of the ceiling material 2 placed on the upper surface side of the lower horizontal plate portion 5g. In other words, the end of the ceiling material 2 is disposed between the lower end side horizontal plate portion 5g and the falling-off suppressing plate portion 5h.
Therefore, the movement of the end of the ceiling material 2 can be restricted between the lower end side horizontal plate portion 5g and the falling-off suppressing plate portion 5h, and the falling off of the ceiling material 2 can be appropriately suppressed.

  Further, a blind plate portion 5i (an example of a blind portion) protruding laterally to the equipment zone A side is formed at a position slightly deviated upward from the lower horizontal plate portion 5g in the substrate portion 5a. ing. In the installation state, as shown in FIGS. 6 and 10, the blind plate portion 5i moves the gap of the end of the equipment zone A (a portion where the below-mentioned ceiling installation device 1 and the equipment free panel 8 are joined) from below. By covering, the gap is suppressed from being exposed to human eyes, and as shown in FIG. 9, the ceiling-mounted device 1B is positioned in the gap at the end of the equipment zone A, thereby positioning the ceiling-mounted device 1B in the horizontal direction. It is possible to suppress the gap from being noticeable.

The bar material hanger 7 is, for example, as shown in FIG. 5, configured as a portal-type fitting made of aluminum alloy, steel, or the like. The bar material hanger 7 includes a concave field edge receiver mounting portion 7A that can be mounted on the field edge receiver 4 while straddling the field edge receiver 4, and an engaged portion 7B that can support the bar material 5 in an engaged state. The bar member 5 is configured to be able to be supported in a state where the bar member 5 is mounted on the field margin receiver 4.
Further, the bar material hanger 7 is provided with the field edge receiver mounting portion 7A with the field edge receiver 4 arranged thereon, and the engaged portion 7B is pulled up so that the field edge receiving mounting portion 7A has a field edge. A lifting operation section 7D is provided for mounting the receiver 4 and firmly engaging the bar member 5 with the engaged section 7B.

  As shown in FIG. 12 (c), the engaged portion 7B is formed to be bent inward from the bifurcated ends of the pair of left and right gate-shaped side plate portions 7a to the left and right central sides. It is constituted by a dovetail portion 7b. The engaged portion 7B is engaged with the engaging claw portion 7b in the engaged concave portion 5e of the field edge receiving attachment portion 5A of each bar member 5 so that the engaging portion 7B and the field edge receiving attaching portion 5A of each bar member 5 can be engaged. Can be engaged.

The lifting operation portion 7D includes a female screw portion (not shown) formed on an upper plate portion extending between upper ends of a pair of left and right gate-shaped side plate portions 7a, and a front end portion formed on an upper surface portion of the field edge receiver 4. And an operation bolt 7e screwed up and down to the female screw portion in a contact state.
The field receiver 4 is arranged on the field receiver mounting portion 7A of the bar material hanger 7, and the field receiver mounting portion 5A of the bar material 5 is engaged with the engaged portion 7B of the bar material hanger 7. In this state, the operating bolt 7e is screwed downward to pull up the engaged portion 7B upward, and the upper surface portion of the upper end side horizontal plate portion 5b of the field edge receiving mounting portion 5A of the bar member 5. Can be tightened in a state where the abutment is brought into contact with the lower surface portion of the rim receiver 4. For this reason, the attachment of the ridge receiver 4 to the ridge receiver attachment portion 7A and the engagement of the bar member 5 with the engaged portion 7B become strong.

  Returning to FIG. 1, the ceiling material 2 is configured as a rectangular plate-shaped lightweight ceiling material mainly composed of a lightweight fiber material. As shown in FIG. 11, the ceiling material 2 has a ceiling base material 2A formed by molding glass wool, which is an example of a fibrous material, into a rectangular plate shape, and a strip-shaped base material that suppresses bending deformation of the ceiling base material 2A. A flexural deformation suppressing member 2B and a nonflammable or flame-retardant and flexible surface material 2C that covers at least a lower surface portion on the indoor side of the ceiling base material 2A are provided.

  The bending deformation suppressing member 2B is made of, for example, an elongated band-shaped plate made of an aluminum alloy, steel, or the like. The width dimension (height dimension along the vertical direction in FIG. 11) of the bending deformation suppressing member 2B is the same or substantially the same as the height dimension (thickness dimension) of the ceiling base material 2A. The length dimension of the bending deformation suppressing member 2B is the same or substantially the same as the length dimension of the long side portion of the outer peripheral portion of the ceiling base material 2A. The bending deformation suppressing member 2B is bonded to the entire end surface of the long side portion by an adhesive means such as an adhesive in a state of covering the entire end surface portion of each of the pair of long side portions of the ceiling base material 2A. ing.

  The flexural deformation suppressing member 2B can appropriately and efficiently reinforce the flexural rigidity of the ceiling base material 2A while minimizing an increase in weight. It is possible to prevent the longitudinal middle portion of the material 2 from hanging down. Moreover, in a state where the ceiling member 2 is erected on the ceiling member receiving portion 5B of the bar member 5 facing each other across the general ceiling zone B, the bending deformation suppressing member 2B joined to the entire region of the long side of the ceiling member 2 is also required. It can be installed on the ceiling material receiving portion 5B of the bar material 5. Therefore, the ceiling member 2 can be properly installed in the ceiling member receiving portions 5B of the bar members 5 facing each other across the general ceiling zone B in a state where it is difficult for the ceiling member 2 to drop.

  The non-combustible or flame-retardant surface material 2C is made of, for example, a material such as glass paper, and is wound around the end face of each long side of the ceiling substrate 2A on which the bending deformation suppressing member 2B is disposed. The lower surface portion of the ceiling base material 2A on the indoor side, the end surface portion, and the end surface side of the upper surface portion are covered. The surface material 2C is bonded by a bonding means such as an adhesive to a bending deformation suppressing member 2B bonded and bonded to end surfaces of both long sides of the ceiling base material 2A in a state where wrinkles are eliminated by applying tension. ing.

(Equipment suspension structure)
Next, the device suspension structure K will be described.
As described above, as the equipment suspension structure K, as shown in FIG. 6, the first equipment suspension structure K1 that supports the small ceiling-installed equipment 1A on the floor slab S on the upper floor via the equipment free panel 8 As shown in FIG. 9 and FIG. 10, a second equipment suspension structure K2 for mainly supporting the large ceiling-installed equipment 1B on the floor slab S on the upper floor without interposing the equipment free panel 8 is provided.
The small ceiling-mounted device 1A is efficiently supported by the first device suspension structure K1 in a well-fitted state using the facility free panel 8, while the large ceiling-mounted device 1B is supported by the second device suspension structure K1. With the structure K2, the equipment free panel 8 can be efficiently supported without using it.

(A) First Equipment Hanging Structure As shown in FIG. 6, the first equipment hanging structure K1 includes a number of hanging bolts 3B (an example of a hanging tool, 1), an equipment free panel 8 attached to the hanging bolt 3B, and an equipment fixing plate (equipment fixing member) 9 capable of sandwiching and fixing the ceiling installation equipment 1A between the equipment free panel 8 and the equipment free panel 8. ing. The suspension bolt 3B is located immediately above the equipment zone A and does not form the ceiling material suspension structure T.
The first equipment suspension structure K1 bears a load on the ceiling material suspension structure T by attaching the desired ceiling installation equipment 1A to the equipment free panel 8 disposed in the equipment zone A. It can be supported by the floor slab S on the upper floor without being allowed to do so.
Further, the equipment free panel 8 can be installed at an appropriate location in the equipment zone A, and the ceiling installation equipment 1A can be installed at an appropriate location of the equipment free panel 8. The ceiling installation device 1A can be arranged.

  As shown in FIG. 2, FIG. 3, FIG. 6, and FIG. 7, the equipment free panel 8 is made of an aluminum alloy, steel, or the like, and is a device mounting portion 8A (FIG. 6, FIG. 7) and a locking portion 8B (see FIGS. 2 and 3) which can be locked to the suspension bolt 3B immediately above. In this embodiment, as shown in FIGS. 2 and 3, the equipment free panel 8 is attached to the suspension bolt 3B via the free panel hanger 10.

As shown in FIGS. 6 and 7, for example, the equipment mounting portion 8A includes a flat mounting plate portion 8a that is disposed in the equipment zone A in a substantially horizontal posture in a state where the equipment zone A is closed. . The width of the mounting plate portion 8a in the short direction is configured to substantially correspond to the width of the equipment zone A.
The mounting plate portion 8a has a plurality of types of ceilings formed by forming mounting holes 8b (see FIG. 8A) having a size and a shape corresponding to the type of the ceiling installation device 1A at appropriate locations. The installation device 1A can be attached to any location. Further, for example, the mounting plate portion 8a may be formed with a plurality of types of sizes and shapes of mounting holes 8b corresponding to the plurality of types of ceiling installation devices 1A so that the plurality of types of ceiling installation devices 1A can be simultaneously mounted. it can. The mounting hole 8b may be formed in the mounting plate 8a in advance.

  As shown in FIGS. 2 and 3, the locking portion 8B is configured to be locked to the locked portion 10B (first locked portion) of the hanger 10 for free panel. The locking portion 8B includes, for example, elastically deformable locking claw portions 8e provided on left and right side plate portions 8d in a substantially vertical posture rising upward from both left and right end portions of the mounting plate portion 8a. The locking claw portion 8e is configured by folding the distal end sides of the left and right side plate portions 8d toward the left and right central sides and downward.

The free panel hanger 10 is, for example, as shown in FIG. 3, configured as a portal-type fitting made of an aluminum alloy, steel, or the like. This free panel hanger 10 is provided with a hanging bolt mounting portion 10A that can be freely mounted on the hanging bolt 3B and a locked portion 10B that can freely lock the equipment free panel 8, and is attached to the lower end of the hanging bolt 3B. In this state, the equipment free panel 8 can be supported in a locked state.
The free panel hanger 10 includes an upper plate portion 10a having a substantially horizontal posture with the X direction as a longitudinal direction, and four side plate portions 10b extending downward from both longitudinal ends of the upper plate portion 10a. Have been.

The hanging bolt mounting portion 10A is formed, for example, by forming a bolt insertion hole 10d at a substantially central portion of the upper plate portion 10a. The hanging bolt mounting portion 10A is a free panel hanger by tightening the upper plate portion 10a with a nut 10e screwed up and down of the hanging bolt 3B with the hanging bolt 3B inserted through the bolt insertion hole 10d. 10 can be attached to the suspension bolt 3B at a desired height.
The bolt insertion hole 10d has a long hole shape extending in the X direction, and the hanging position of the free panel hanger 10 can be adjusted along the X direction.

  The locked portion 10B includes, for example, four locked claw portions 10f that are formed to protrude outward on outer sides on the lower end side of each of the side plate portions 10b. The locked claw portion 10f is configured to include an upper side portion in a substantially horizontal posture, and a side portion in a tilted posture that is located closer to the left and right center toward the lower side.

  The equipment free panel 8 is configured to be attachable to the free panel hanger 10 as the free panel hanger 10 supported by the floor slab S on the upper floor approaches and moves from below. Specifically, as shown in FIGS. 4A to 4C, the locking portion 8 </ b> B of the equipment free panel 8 connects the equipment free panel 8 to the free panel hanger 10 installed on the ceiling side. By moving closer from below, the free panel hanger 10 can be locked to the locked portion 10B. The dashed line in FIG. 4 indicates the position of the ceiling surface.

  At that time, the upward movement of the equipment free panel 8 is allowed while the locking claw 8e of the locking portion 8B of the equipment free panel 8 is elastically deformed (see FIGS. 4A to 4B). When the locking portion 8B and the locked portion 10B come to a predetermined relative position with the upward movement of the equipment free panel 8, the locking claw portion 8e of the locking portion 8B is elastically restored and the free panel hanger 10 is restored. Automatically locked to the locked claw 10f of the locked portion 10B (see FIGS. 4B to 4C).

  The side of the locked claw portion 10f of the free panel hanger 10 is used to move the equipment free panel 8 closer to the installed free panel hanger 10 from below. The locking claw 8e functions as a locking guide that guides the movement while elastically deforming the upper portion of the locked claw 10f, which is a specific locked position.

  Further, there is nothing between the locking portion 8B of the equipment free panel 8 and the locked portion 10B of the free panel hanger 10 to restrict the relative movement of the two in the Y direction. Numeral 8 is slidable along the Y direction, which is the length direction of the equipment zone A, in a state where it is attached to the free panel hanger 10 and disposed in the equipment zone A. Therefore, the installation position of the equipment free panel 8 can be easily adjusted along the Y direction by sliding the equipment free panel 8 while the equipment free panel 8 is disposed in the equipment zone A.

  The equipment fixing plate 9 is made of, for example, an aluminum alloy or steel, as shown in FIGS. 6 to 8, and has an equipment fixing part 9A that can fix the ceiling-mounted equipment 1A attached to the equipment free panel 8 and equipment. It is configured to include a locking portion 8B of the free panel 8 and a locked locked portion 9B (second locked portion).

The device fixing portion 9A is composed of, for example, a flat device pressing plate portion 9a in a substantially horizontal posture capable of pressing the periphery of the ceiling-mounted device 1A downward. The width of the device holding plate portion 9a in the short side direction (X direction) is approximately the width of the installation space between the left and right side plate portions 8d of the equipment free panel 8, and the equipment free panel 8 And between the left and right side plate portions 8d of the equipment free panel 8 from above.
The equipment holding plate 9a is formed with an insertion hole 9b having a size capable of disposing the center of the plurality of types of ceiling-mounted equipment 1A, and the central part of the ceiling-mounted equipment 1A is inserted into the insertion hole 9b. In this state, the outer peripheral portion of the ceiling-mounted device 1A is configured to be able to be pressed from above.
Note that the insertion hole 9b may be formed at the construction site with a size and shape corresponding to the type of the ceiling installation device 1A and the like at the construction site.

  The locked portion 9B includes, for example, left and right side portions 9e provided with left and right side plate portions 9d in a substantially vertical posture protruding downward. Due to the presence of the left and right side plate portions 9d, the height dimension of the both side portions 9e is configured to be the height size of the installation space between the upper surface of the mounting plate portion 8a of the equipment free panel 8 and the locking claw portion 8e. . The locked portion 9B is configured such that the left and right side portions 9e of the device fixing plate 9 are fitted into the installation space, and the locking claw 8e of the equipment free panel 8 is restricted from being disengaged upward. The fixing plate 9 can be attached to the equipment free panel 8.

  The installation of the ceiling-mounted device 1A to the equipment free panel 8 can be performed, for example, by the following procedure. The installation of the ceiling installation equipment 1A on the equipment free panel 8 may be performed at any time before the installation of the equipment free panel 8 in the equipment zone A and after the installation of the equipment free panel 8 in the equipment zone A. What is necessary is just to perform at the appropriate timing according to the work process.

First, as shown in FIG. 8A, an attachment hole 8b having a size and a shape corresponding to the type of the ceiling installation device 1A is formed in the attachment plate portion 8a of the equipment attachment portion 8A of the equipment free panel 8.
Next, as shown in FIG. 8B, by moving the ceiling-mounted device 1A closer to the equipment free panel 8 from above, the center of the ceiling-mounted device 1A is arranged inside the mounting hole 8b, and The ceiling-mounted device 1A is placed on the mounting plate 8a of the device mounting portion 8A of the equipment free panel 8 with the outer peripheral portion of the ceiling-mounted device 1A placed on the upper surface of the mounting plate 8a of the equipment free panel 8. I do.
Then, as shown in FIG. 8B, the equipment fixing plate 9 is inserted from the upper side with the central part of the ceiling-mounted equipment 1A inserted into the insertion hole 9b of the equipment holding plate 9a of the equipment fixing plate 9. By moving closer to the free panel 8, the device fixing plate 9 enters the installation space between the left and right side plate portions 8 d of the equipment free panel 8 while elastically deforming the locking claws 8 e of the equipment free panel 8. The locking claw 8e of the equipment free panel 8 is elastically restored when the equipment fixing plate 9 reaches the installation space in a fixed posture, and automatically fixes the equipment fixing plate 9 to the equipment free panel 8.
In this manner, the ceiling-mounted equipment 1A can be fixed to the equipment-free panel 8 in a state where the outer peripheral portion of the ceiling-mounted equipment 1 is sandwiched between the equipment-free panel 8 and the equipment fixing plate 9 from above and below.

(B) Second equipment suspension structure As shown in FIGS. 9 and 10, the second equipment suspension structure K2 suspends a large ceiling-installed equipment 1B in the equipment zone A without using the equipment free panel 8. The lower structure T is supported by the floor slab S on the upper floor in a state where the load is not applied to the lower structure T.
For example, in FIG. 9, a hanging bolt 3B that is located just above the equipment zone A and does not form the ceiling material hanging structure T is provided, and the hanging bolt 3B is used to form a linear lighting device that is an example of the ceiling installation device 1B. The second device suspension structure K2 to be supported is shown as an example. In FIG. 10, an outlet device as an example of the ceiling-mounted equipment 1B is connected to a floor slab S on the upper floor via a duct or the like supported on the floor slab S on the upper floor by a suspension bolt 3B as an example of a duct support. 2 shows an example of a second device suspension structure K2 that is supported by the device.
As described above, the second equipment suspension structure K2 can support the ceiling installation equipment 1B on the floor slab S on the upper floor without using the support force of the equipment free panel 8 and the ceiling material suspension structure T. Various possible structures can be employed.
In the second device suspension structure K2, when the ceiling-mounted device 1B is attached to the suspension bolt 3B, the ceiling-mounted device 1B is not limited to be directly attached, but may be attached via an attachment member such as a hanger. Good.

Next, a ceiling repair method for repairing an existing ceiling system to the ceiling system according to the present invention will be described.
FIG. 12A shows an existing ceiling system. In the existing ceiling system, a ridge 11 made of a channel material such as a C-shaped steel is attached to the lower surface side of a ridge receiver 4 suspended and supported by a suspension bolt 3A, and screws or the like are fixed to the ridge 11. The ceiling member 12 made of a single-layer or multiple-layer gypsum board is attached by means (not shown).
In this existing ceiling system, the ridge 11 and the ceiling material 12 are heavy, and furthermore, although not shown, the small ceiling installation equipment 1A is attached to the ceiling material 12, so the ceiling has a heavy weight. System.

In order to repair the existing ceiling system to the ceiling system according to the present invention, first, as shown in FIG. 12 (b), the structure of the existing ceiling system that is lower than the ridge receiver 4 is removed. Specifically, the ceiling material 12 and the ridge 11 in the existing ceiling system are removed.
Then, as shown in FIG. 12 (c), the bar material 5 is attached via the bar material hanger 7 to the field margin receiver 4 left without being removed, and a lightweight ceiling is provided between the bar materials 5. The material 2 is erected to form the ceiling material suspension structure T.
Also, as shown in FIGS. 2, 6, 9, and 10, a new suspension bolt 3B is attached to a portion immediately above the equipment zone A in the floor slab S on the upper floor, and the equipment is free from the suspension bolt 3B. The ceiling hanging equipment 1A is attached via the panel 8, or the ceiling installation equipment 1B is attached without using the equipment free panel 8, thereby constituting the equipment hanging structure K.
In this way, the existing ceiling system is efficiently renovated to the ceiling system according to the present invention while utilizing the existing suspension bolts 3A and the edge support 4, and the ceiling is significantly reduced in weight during an earthquake. Safety can be improved.
Further, in the ceiling system according to the present invention, the height Z from the lower surface of the field support 4 to the lower surface of the ceiling material 2 does not interfere with the ceiling installation device 1 such as an embedded lighting fixture or the like. Since the dimensions are set such that they can be arranged, it is possible to install such a ceiling-mounted device 1 without cutting the ridge receiver 4.

[Another embodiment]
(1) As an improvement of the above-described embodiment, a falling-off preventing measure for preventing the ceiling material 2 from falling off may be applied to the ceiling material suspension structure T.
In this case, for example, a light wire (an example of a connecting member as a falling-off preventing member) may be laid between the ceiling material hanging structure T and the ceiling material 2 as a falling-off preventing measure. is there. For example, as shown by a dotted line in FIG. 11, an annular wire 2b is attached in a state of being inserted into an insertion hole 2a formed in the bending deformation suppressing member 2B on the side of the ceiling material 2. Although not shown, in a state where the ceiling material 2 is disposed in the general ceiling zone B, the other end of the wire 2b is connected to the bar material 5 on the side of the ceiling material suspension structure T by a clip or the like. It can be implemented by connecting with connecting means. By doing so, it is possible to prevent the ceiling material 2 from falling off via the wire while avoiding an increase in weight.
It should be noted that the drop-prevention measures are not limited to those connected by a connecting member such as a wire, and various types capable of preventing the drop of the ceiling material 2 can be used.

  (2) In the above-described embodiment, the case where the bending deformation suppressing member 2B of the ceiling material 2 is provided on the pair of long sides of the ceiling substrate 2A has been described as an example, but all the outer peripheral portions of the ceiling substrate 2A are provided. Or any one of the outer peripheral portions. In addition, when the length of all sides of the ceiling material 2 is relatively short, such as when the ceiling system according to the present invention is applied to a grid ceiling, it is not particularly necessary to provide the bending deformation suppressing member 2B. In the above-described embodiment, the case where the bending deformation suppressing member 2B of the ceiling material 2 is joined to the end surface of the outer peripheral portion of the ceiling base material 2A is shown as an example, but the joining is not necessarily required.

  (3) In the above-described embodiment, the case where the ceiling material suspension structure T is configured by the suspension bolts 3A, the ridge receiver 4, the bar material 5, and the like is described as an example. Various structures that can be supported by the floor slab S can be appropriately adopted. Further, even when the ceiling material suspension structure T is configured by the suspension bolts 3A, the ridge receivers 4, the bar members 5, and the like, the specific configurations thereof can be variously changed.

  (4) In the above-described embodiment, the case where the first device suspension structure K1 includes the hanging bolts 3B, the equipment free panel 8, the device fixing plate 9, the free panel hanger 10, and the like is described as an example. The configuration other than the equipment free panel 8 is not always necessary, and the ceiling installation equipment 1 is supported by the floor slab S on the upper floor via the equipment free panel 8 in a state where the load is not applied to the ceiling material suspension structure T. Various structures that can be used can be appropriately adopted. Further, even when the hanging bolts 3B, the equipment fixing plate 9, the free panel hanger 10, and the like are used to configure the first equipment hanging structure K1, the specific configuration thereof can be variously changed. . Further, the specific configuration of the equipment free panel 8 can be variously changed.

  (5) In the above-described embodiment, the case where the second device suspension structure K2 is configured by the suspension bolt 3B, the duct support, the duct, or the like has been described as an example, but a load is applied to the ceiling material suspension structure T. Various structures capable of supporting the ceiling-installed equipment 1 on the floor slab S on the upper floor without intervening the equipment free panel can be appropriately adopted without burdening the equipment. In addition, even when the suspension bolt 3B, the duct support, the duct, or the like is used to configure the second device suspension structure K2, the specific configuration thereof can be variously changed.

  As described above, the embodiments of the present invention have been described. However, the present invention is not limited to these embodiments, and the above-described embodiments and various modified examples may be appropriately used in combination. Of course, the present invention can be implemented in various modes without departing from the scope of the present invention.

T Ceiling material suspension structure K Equipment suspension structure K1 First equipment suspension structure K2 Second equipment suspension structure S Floor slab (upper floor)
DESCRIPTION OF SYMBOLS 1 Ceiling installation equipment 2 Ceiling material 2A Ceiling base material 2B Deflection suppression member 2C Surface material 5B Ceiling material receiving part 8 Equipment free panel 8B Locking part 9 Equipment fixing plate (equipment fixing member)
9B Locked part (second locked part)
10B Locked part (first locked part)

Claims (7)

A ceiling that constitutes a ceiling by supporting a large number of ceiling materials forming a ceiling surface on the upper floor with a ceiling material suspension structure, and supporting ceiling installation equipment on the upper floor with a device suspension structure The system
The device hanging structure is configured to support the ceiling-installed equipment on the upper floor, in a state where the load of the ceiling-mounted device is not borne by the ceiling material hanging structure,
A first equipment suspension structure for supporting the ceiling installation equipment attached to the equipment free panel to an upper floor, via an equipment free panel to which a plurality of types of ceiling installation equipment can be attached,
A second equipment suspension structure for supporting the ceiling-installed equipment on the upper floor without using the equipment free panel. The ceiling is configured as a line ceiling having a line-shaped equipment zone in which the ceiling material is not arranged, and ceiling-installed equipment is arranged in the equipment zone in the first equipment hanging structure and the second equipment hanging structure. Is configured to be installed
The equipment free panel has a width substantially corresponding to the width of the line-shaped equipment zone,
The first equipment suspension structure is configured such that the equipment free panel can be freely arranged in the line-shaped equipment zone, and the arrangement position of the equipment free panel can be freely changed in the length direction of the equipment zone. The ceiling system according to claim 1.   The said 1st equipment suspension structure is comprised so that the said equipment free panel may be arrange | positioned in an equipment zone in the state which can be slid along the length direction of the said linear equipment zone. Ceiling system. The first device suspension structure includes a first locked portion that is supported by an upper floor and that is capable of locking with a locking portion provided on the equipment free panel.
The locking portion of the equipment free panel and the first locked portion are locked as the equipment free panel approaches the first locked portion supported by the upper floor from below. The ceiling system according to any one of claims 1 to 3, wherein the ceiling system is configured to be capable. The first device suspension structure includes a first locked portion that is supported by an upper floor and that is capable of locking with a locking portion provided on the equipment free panel.
An equipment fixing member capable of fixing ceiling-mounted equipment to the equipment free panel is provided, and the equipment fixing member has a fixing posture in which the equipment fixing member is fixed to fix the ceiling-mounted equipment. The ceiling system according to any one of claims 1 to 4, further comprising a second locked portion capable of locking with the locking portion. The ceiling material is a ceiling base material formed by forming a fibrous material into a rectangular plate shape, and the bending deformation suppression is additionally provided on each of a pair of opposing sides of an outer peripheral portion of the ceiling base material. And components,
The ceiling material suspension structure is provided with a ceiling material receiving portion that is supported by the upper floor and receives the outer peripheral portion of the ceiling material from below,
The ceiling material is provided between the pair of adjacent ceiling material receiving portions in a state where the pair of bending deformation suppressing members spans between the pair of adjacent ceiling material receiving portions. Item 6. The ceiling system according to any one of Items 1 to 5. The bending deformation suppressing member is adhesively bonded to each of a pair of opposing sides of the ceiling base material,
The ceiling material is provided with a nonflammable or flame-retardant, flexible surface material that covers at least a lower surface portion on the indoor side of the ceiling base material,
The ceiling system according to claim 6, wherein both end sides of the surface material are adhesively bonded to each of the bending deformation suppressing members on a pair of opposing sides of the ceiling base material.

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