JP6221398B2

JP6221398B2 - Ceiling structure

Info

Publication number: JP6221398B2
Application number: JP2013130871A
Authority: JP
Inventors: 富雄猪飼; 昌之山中; 晃雄上宮; 春記大津
Original assignee: Obayashi Corp
Current assignee: Obayashi Corp
Priority date: 2013-06-21
Filing date: 2013-06-21
Publication date: 2017-11-01
Anticipated expiration: 2033-06-21
Also published as: JP2015004236A

Description

本発明は、天井構造に関する。 The present invention relates to a ceiling structure.

ビル等の建築物においては、空調機や照明器具等の設備機器が天井裏に配設されることがある。天井裏にて設備機器を支持する方法の１つとして、吊り下げ棒により上層の構造躯体から設備機器を吊り下げて支持する方法が提案されている（例えば特許文献１参照）。 In buildings such as buildings, equipment such as air conditioners and lighting fixtures may be arranged behind the ceiling. As one method of supporting equipment in the back of the ceiling, a method has been proposed in which equipment is suspended and supported from an upper structural frame by a hanging rod (see, for example, Patent Document 1).

特開２００７−２９２２１４号公報JP 2007-292214 A

天井板等の天井部材を吊り下げて支持する吊り下げ棒の長さを、設備機器を吊り下げて支持する吊り下げ棒の長さよりも長くすることで、設備機器を天井裏に隠蔽することができる。但し、その場合、天井部材と設備機器とが個別に吊り下げられ、且つ、吊り下げ棒の長さが異なることになるため、地震発生時には、天井部材と設備機器とがそれぞれ異なる振動周期でばらばらに揺れてしまう。その結果、天井部材、設備機器、吊り下げ棒が互いに衝突し、破損・脱落が起こってしまう。 It is possible to conceal equipment in the back of the ceiling by making the length of the hanging rod that supports the ceiling member, such as a ceiling board, by hanging it longer than the length of the hanging rod that supports the equipment. it can. However, in that case, the ceiling member and the equipment are suspended individually, and the length of the suspension bar is different. Therefore, when an earthquake occurs, the ceiling member and the equipment are separated at different vibration periods. Will shake. As a result, the ceiling member, the equipment, and the hanging rod collide with each other, causing damage and dropping.

本発明は、このような事情に鑑みてなされたものであり、耐震性が向上した天井構造を提供することを目的とする。 The present invention has been made in view of such circumstances, and an object thereof is to provide a ceiling structure with improved earthquake resistance.

かかる目的を達成するための天井構造は、
設備機器と、
天井部材と、
前記設備機器を構造躯体から吊り下げて支持する第１の吊り下げ部材と、
前記第１の吊り下げ部材よりも長く、前記天井部材を前記構造躯体から吊り下げて支持する第２の吊り下げ部材と、
一端が前記設備機器の側部において前記設備機器に接続され、他端が前記天井部材に接続される連結部材と、
前記連結部材の途中に設けられ、水平方向の振動を吸収する減衰装置と、
を有し、
前記第１の吊り下げ部材間、及び、前記第２の吊り下げ部材間に、ブレース材が設けられないことを特徴とする天井構造である。
このような天井構造によれば、設備機器と天井部材の振動周期の違いを利用し、地震発生時には、設備機器が錘となって天井部材の横揺れを制振させることができ、また逆に、天井部材が錘となって設備機器の横揺れを制振させることができる。よって、天井部材、設備機器、吊り下げ部材の衝突を抑制することができる。また、設備機器はその重心を中心に横揺れするため、連結部材の一端を設備機器の側部において設備機器に接続することで、設備機器の横揺れを連結部材に効率よく伝達させることができ、設備機器と天井部材の横揺れに対する制振効果をより高めることができる。よって、天井構造の耐震性を向上させることができる。
また、前記第１の吊り下げ部材間、及び、前記第２の吊り下げ部材間に、ブレース材が設けられないから、地震発生時に、設備機器と天井部材のそれぞれ横揺れを許容しつつ、設備機器と天井部材は互いの横揺れを制振させることができる。 The ceiling structure to achieve this purpose is
Equipment and equipment
A ceiling member;
A first suspension member for supporting the facility device by suspending it from a structural housing;
A second suspension member that is longer than the first suspension member and supports the ceiling member by suspending it from the structural housing;
One end is connected to the equipment at the side of the equipment, and the other end is connected to the ceiling member;
A damping device provided in the middle of the connecting member and absorbing horizontal vibration;
Have
The ceiling structure is characterized in that no brace material is provided between the first suspension members and between the second suspension members .
According to such a ceiling structure, by utilizing the difference in the vibration cycle between the equipment and the ceiling member, when the earthquake occurs, the equipment can act as a weight to suppress the rolling of the ceiling member, and vice versa. The ceiling member can serve as a weight to suppress the rolling of the equipment. Therefore, the collision of a ceiling member, equipment, and a suspension member can be suppressed. In addition, since equipment equipment rolls around its center of gravity, connecting one end of the connecting member to the equipment equipment on the side of the equipment equipment enables efficient transmission of the equipment equipment roll to the connecting member. In addition, it is possible to further enhance the damping effect on the rolling of the equipment and the ceiling member. Therefore, the earthquake resistance of the ceiling structure can be improved.
In addition, since no brace material is provided between the first suspension members and between the second suspension members, the facility equipment and the ceiling member are allowed to roll while an earthquake occurs. The device and the ceiling member can suppress the rolling of each other.

かかる天井構造であって、前記連結部材は、上方から見て、所定方向に沿って設けられた第１の連結部材と、前記所定方向と交差する方向に沿って設けられた第２の連結部材と、を有することを特徴とする天井構造である。
このような天井構造によれば、Ｘ方向の地震力による設備機器及び天井部材の横揺れも、Ｙ方向の地震力による設備機器及び天井部材の横揺れも、制振させることができる。 In this ceiling structure, the connecting member includes a first connecting member provided along a predetermined direction as viewed from above, and a second connecting member provided along a direction intersecting the predetermined direction. And a ceiling structure characterized by comprising:
According to such a ceiling structure, it is possible to suppress both the rolling of the equipment and the ceiling member due to the seismic force in the X direction and the rolling of the equipment and the ceiling member due to the seismic force in the Y direction.

かかる天井構造であって、前記連結部材の前記他端が前記第２の吊り下げ部材の下端又は前記天井部材に接続され、前記連結部材が水平方向に対して傾斜して設けられることを特徴とする天井構造である。
仮に、連結部材の他端を第２の吊り下げ部材の長手方向における中央部に接続した場合、設備機器の横揺れによって第２の吊り下げ部材が変形してしまう虞があるが、連結部材の他端を第２の吊り下げ部材の下端又は天井部材に接続することで、設備機器の横揺れが天井部材に伝達され、設備機器の横揺れを天井部材の横揺れの制振に利用することができる。 In this ceiling structure, the other end of the connecting member is connected to the lower end of the second suspension member or the ceiling member, and the connecting member is provided to be inclined with respect to the horizontal direction. It is a ceiling structure.
If the other end of the connecting member is connected to the central portion in the longitudinal direction of the second hanging member, the second hanging member may be deformed by the rolling of the equipment, By connecting the other end to the lower end of the second suspension member or the ceiling member, the roll of the equipment is transmitted to the ceiling member, and the roll of the equipment is used for damping the roll of the ceiling member. Can do.

かかる天井構造であって、前記第２の吊り下げ部材よりも剛性の高い剛性部材が前記天井部材から立設し、前記連結部材の前記他端が前記剛性部材に接続され、前記連結部材が水平方向に沿って設けられることを特徴とする天井構造である。
このような天井構造によれば、減衰装置を水平方向に沿って設けることができるため、設備機器及び天井部材の横揺れの制振効果をより高めることができる。また、剛性部材は設備機器の横揺れによって変形し難いため、設備機器の横揺れが剛性部材を介して天井部材に伝達され、設備機器の横揺れを天井部材の横揺れの制振に利用することができる。 In this ceiling structure, a rigid member having higher rigidity than the second suspension member is erected from the ceiling member, the other end of the connecting member is connected to the rigid member, and the connecting member is horizontally A ceiling structure characterized by being provided along a direction.
According to such a ceiling structure, since the attenuation device can be provided along the horizontal direction, it is possible to further enhance the vibration damping effect of the rolling of the equipment and the ceiling member. In addition, since the rigid member is not easily deformed by the roll of the equipment, the roll of the equipment is transmitted to the ceiling member via the rigid member, and the roll of the equipment is used for damping the roll of the ceiling member. be able to.

かかる天井構造であって、前記連結部材の前記一端は、前記第１の吊り下げ部材に接続されることにより、前記設備機器に接続されることを特徴とする天井構造である。
このような天井構造によれば、地震発生時に、設備機器のねじれや歪みや引っ張りを伴うことなく、設備機器の横揺れを連結部材に効率よく伝達させることができ、設備機器と天井部材の横揺れに対する制振効果をより高めることができる。 In this ceiling structure, the one end of the connecting member is connected to the facility device by being connected to the first suspension member.
According to such a ceiling structure, it is possible to efficiently transmit the roll of the equipment to the connecting member without causing twisting, distortion or pulling of the equipment when an earthquake occurs. The vibration control effect against shaking can be further enhanced.

かかる天井構造であって、前記設備機器は空調機であり、前記天井部材に設けられた吹出口と前記空調機とが可撓性を有するダクトにより連結されることを特徴とする天井構造である。
このような天井構造によれば、地震発生時に空調機と天井部材とが個別に横揺れし、吹出口と空調機との相対位置関係がずれたとしても、ダクトが破断してしまうことを抑制することができる。 In this ceiling structure, the equipment is an air conditioner, and the air outlet is provided in the ceiling member and the air conditioner is connected by a duct having flexibility. .
According to such a ceiling structure, even if the air conditioner and the ceiling member individually roll in the event of an earthquake and the relative positional relationship between the air outlet and the air conditioner shifts, the duct is prevented from breaking. can do.

本発明によれば、耐震性が向上した天井構造を提供することができる。 According to the present invention, a ceiling structure with improved earthquake resistance can be provided.

図１Ａは本実施形態の天井構造の概略平面図であり、図１Ｂは本実施形態の天井構造の概略正面図である。FIG. 1A is a schematic plan view of the ceiling structure of the present embodiment, and FIG. 1B is a schematic front view of the ceiling structure of the present embodiment. 図２Ａ及び図２Ｂは比較例の天井構造の概略正面図である。2A and 2B are schematic front views of a ceiling structure of a comparative example. 空調機と連結部材の接続箇所の説明図である。It is explanatory drawing of the connection location of an air conditioning machine and a connection member. 天井構造の変形例を説明する図である。It is a figure explaining the modification of a ceiling structure.

以下、天井構造の実施形態について図を用いて詳細に説明する。図１Ａは本実施形態の天井構造１の概略平面図であり、図１Ｂは本実施形態の天井構造１の概略正面図である。図２Ａ及び図２Ｂは比較例の天井構造１’の概略正面図である。図３は、空調機１１と連結部材７の接続箇所の説明図である。 Hereinafter, embodiments of the ceiling structure will be described in detail with reference to the drawings. FIG. 1A is a schematic plan view of the ceiling structure 1 of the present embodiment, and FIG. 1B is a schematic front view of the ceiling structure 1 of the present embodiment. 2A and 2B are schematic front views of a ceiling structure 1 'of a comparative example. FIG. 3 is an explanatory diagram of the connection location between the air conditioner 11 and the connecting member 7.

天井構造１は、空調装置１０と、縦方向に延びる第１枠部材２と、縦方向に直交する横方向に延びる第２枠部材３と、天井板４と、天井用吊りボルト５と、空調用吊りボルト６と、連結部材７と、連結部材７の途中に設けられた減衰装置８と、を有する。 The ceiling structure 1 includes an air conditioner 10, a first frame member 2 extending in a vertical direction, a second frame member 3 extending in a horizontal direction orthogonal to the vertical direction, a ceiling plate 4, a suspension bolt 5 for ceiling, and an air conditioner. A suspension bolt 6, a connecting member 7, and an attenuation device 8 provided in the middle of the connecting member 7.

図１Ａに示すように、天井構造１では、複数の第１枠部材２が横方向に所定の間隔を空けて互いに平行となるように配置され、複数の第２枠部材３が縦方向に所定の間隔を空けて互いに平行となるように配置されている。隣接する２本の第１枠部材２と隣接する２本の第２枠部材３との合計４本の枠部材２，３に取り囲まれた区画が、１つの単位区画を構成し、各単位区画に天井板４がそれぞれ嵌め込まれている。具体的に説明すると、第１枠部材２及び第２枠部材３の断面はＴ字を逆さまにした形状をしており、Ｔ字の角部に天井板４の縁が配設されている。また、第１枠部材２と第２枠部材３とが交差する箇所では、例えば、一方の枠部材の端部に設けられた差し込み金具の一部が、他方の枠部材の途中に設けられた差し込み穴に挿入されたり、一方の枠部材の途中に設けられた上向きの切り欠け部が、他方の枠部材の途中に設けられた下向きの切り欠け部に嵌合されたりすることによって、第１枠部材２と第２枠部材３は接続されている。 As shown in FIG. 1A, in the ceiling structure 1, a plurality of first frame members 2 are arranged so as to be parallel to each other at a predetermined interval in the horizontal direction, and a plurality of second frame members 3 are predetermined in the vertical direction. Are arranged so as to be parallel to each other with an interval of. A section surrounded by a total of four frame members 2 and 3 including two adjacent first frame members 2 and two adjacent second frame members 3 constitutes one unit section. The ceiling plate 4 is fitted in each. If it demonstrates concretely, the cross section of the 1st frame member 2 and the 2nd frame member 3 has the shape which turned T shape upside down, and the edge of the ceiling board 4 is arrange | positioned in the corner | angular part of T shape. Moreover, in the location where the 1st frame member 2 and the 2nd frame member 3 cross | intersect, for example, a part of insertion metal fitting provided in the edge part of one frame member was provided in the middle of the other frame member. The first notch is inserted into the insertion hole, or the upward notch provided in the middle of one frame member is fitted to the downward notch provided in the middle of the other frame member. The frame member 2 and the second frame member 3 are connected.

天井用吊りボルト５は、周回するネジ溝が側面に形成され、ナットによる締結が可能な棒状のボルトである。天井用吊りボルト５の上端は、上方の構造躯体９（例えば、上階の天井スラブ面や梁、側壁）に接続され、天井用吊りボルト５の下端には吊りハンガー２０があり、吊りハンガー２０に第１枠部材２や第２枠部材３が接続されている。つまり、天井用吊りボルト５は、第１枠部材２と第２枠部材３と天井板４とを、構造躯体９から吊り下げて支持する。また、上述のように、第１枠部材２と第２枠部材３は接続されているため、地震発生時には、第１枠部材２と第２枠部材３と天井板４とが、天井用吊りボルト５に吊られた状態で一体となって横揺れする。以下、第１枠部材２と第２枠部材３と天井板４とを合わせて「天井部材」とも呼ぶ。また、天井用吊りボルト５と吊りハンガー２０とを合わせたものが「第２の吊り下げ部材」に相当する。 The ceiling suspension bolt 5 is a rod-shaped bolt that has a thread groove that circulates on the side surface and can be fastened with a nut. The upper end of the ceiling suspension bolt 5 is connected to an upper structural housing 9 (for example, an upper floor ceiling slab surface, a beam, or a side wall), and a suspension hanger 20 is provided at the lower end of the ceiling suspension bolt 5. The 1st frame member 2 and the 2nd frame member 3 are connected to. That is, the suspension bolt 5 for the ceiling supports the first frame member 2, the second frame member 3, and the ceiling plate 4 by hanging from the structural housing 9. Moreover, since the 1st frame member 2 and the 2nd frame member 3 are connected as mentioned above, the 1st frame member 2, the 2nd frame member 3, and the ceiling board 4 are suspended for ceiling at the time of the occurrence of an earthquake. It rolls together as it is suspended from the bolt 5. Hereinafter, the first frame member 2, the second frame member 3, and the ceiling plate 4 are collectively referred to as a “ceiling member”. A combination of the ceiling suspension bolt 5 and the suspension hanger 20 corresponds to a “second suspension member”.

空調装置１０は、空調機１１（設備機器）と、フレキシブルダクト１２（可撓性を有するダクト）と、天井板４を上下方向に貫通する吹出口１３と、を有する。フレキシブルダクト１２の一端が空調機１１に接続され、フレキシブルダクト１２の他端が吹出口１３に接続されている。よって、空調機１１からの調整空気（冷気や暖気）は、フレキシブルダクト１２を通って、天井板４に設けられた吹出口１３から天井構造１の下部空間に供給される。 The air conditioner 10 includes an air conditioner 11 (equipment), a flexible duct 12 (flexible duct), and an air outlet 13 that penetrates the ceiling board 4 in the vertical direction. One end of the flexible duct 12 is connected to the air conditioner 11, and the other end of the flexible duct 12 is connected to the air outlet 13. Therefore, the adjustment air (cold air or warm air) from the air conditioner 11 passes through the flexible duct 12 and is supplied to the lower space of the ceiling structure 1 from the air outlet 13 provided in the ceiling plate 4.

空調用吊りボルト６（第１の吊り下げ部材）は、空調機１１を構造躯体９から吊り下げて支持するためのものであり、天井用吊りボルト５と同様に、周回するネジ溝が側面に形成され、ナットによる締結が可能な棒状のボルトである。空調用吊りボルト６の上端は、上方の構造躯体９に接続され、空調用吊りボルト６の下端は、図３に示すように、空調機１１の側部１１ａ（上下方向に延びる部位）に取り付けられた第１取付金具２１に接続されている。具体的に説明すると、本実施形態の空調機１１は略直方体形状であり、図１Ａに示すように、空調機１１の横方向の側部１１ａにそれぞれ縦方向に間隔を空けて２つの第１取付金具２１が取り付けられている。即ち、１つの空調機１１に対して４つの第１取付金具２１が取り付けられている。第１取付金具２１は、板状の部材が屈曲された断面Ｌ字形状の部材であり、空調機１１に取り付けられる垂直部２１ａと、垂直部２１ａから水平に突出する水平部２１ｂと、を有する。水平部２１ｂには上下方向に貫通する貫通孔が設けられ、空調用吊りボルト６は、その貫通孔に通され、水平部２１ｂの上方と下方からナットで締め込まれることによって固定されている。 The air-conditioning suspension bolt 6 (first suspension member) is for supporting the air conditioner 11 by suspending it from the structural housing 9. Like the ceiling suspension bolt 5, the circulating screw groove is formed on the side surface. It is a rod-shaped bolt that is formed and can be fastened with a nut. The upper end of the air-conditioning suspension bolt 6 is connected to the upper structural housing 9, and the lower end of the air-conditioning suspension bolt 6 is attached to the side portion 11a (part extending in the vertical direction) of the air conditioner 11, as shown in FIG. The first mounting bracket 21 is connected. More specifically, the air conditioner 11 of the present embodiment has a substantially rectangular parallelepiped shape, and as shown in FIG. 1A, the two first portions are spaced apart in the vertical direction on the lateral side portions 11 a of the air conditioner 11. A mounting bracket 21 is attached. That is, four first mounting brackets 21 are attached to one air conditioner 11. The first mounting bracket 21 is a member having an L-shaped cross section in which a plate-like member is bent, and includes a vertical portion 21a attached to the air conditioner 11 and a horizontal portion 21b protruding horizontally from the vertical portion 21a. . The horizontal portion 21b is provided with a through-hole penetrating in the vertical direction, and the air-conditioning suspension bolt 6 is passed through the through-hole and fixed by being tightened with a nut from above and below the horizontal portion 21b.

また、空調用吊りボルト６に比べて、天井用吊りボルト５の方が、上下方向の長さが長い。そのため、空調機１１は、天井板４よりも上方に位置し、天井板４と構造躯体９の間の天井裏空間に隠蔽される。また、一般的に、空調機１１は天井部材２〜４に比べて重い。そのため、天井部材２〜４を吊り下げて支持する天井用吊りボルト５とは別に、空調機１１を吊り下げて支持する空調用吊りボルト６を設けることで、空調機１１を安定して支持することができる。 Also, the ceiling suspension bolt 5 is longer in the vertical direction than the air conditioning suspension bolt 6. Therefore, the air conditioner 11 is located above the ceiling plate 4 and is concealed in the ceiling space between the ceiling plate 4 and the structural housing 9. In general, the air conditioner 11 is heavier than the ceiling members 2 to 4. Therefore, separately from the ceiling suspension bolts 5 that suspend and support the ceiling members 2 to 4, the air conditioning suspension bolts 6 that suspend and support the air conditioners 11 are provided to stably support the air conditioners 11. be able to.

連結部材７は、細長い棒状の部材であり、一端が空調機１１の側部１１ａにおいて空調用吊りボルト６に接続され、他端が吊りハンガー２０に接続されている。そのため、連結部材７の一端は空調用吊りボルト６を介して空調機１１に接続され、連結部材７の他端は吊りハンガー２０を介して第１枠部材２、第２枠部材３、及び、天井板４に接続されることになる。つまり、連結部材７は、空調機１１と天井部材２〜４とを連結するためのものである。 The connecting member 7 is an elongated rod-like member, and one end is connected to the air-conditioning suspension bolt 6 at the side portion 11 a of the air conditioner 11, and the other end is connected to the suspension hanger 20. Therefore, one end of the connection member 7 is connected to the air conditioner 11 via the air conditioning suspension bolt 6, and the other end of the connection member 7 is connected to the first frame member 2, the second frame member 3, and the suspension hanger 20. It will be connected to the ceiling board 4. That is, the connecting member 7 is for connecting the air conditioner 11 and the ceiling members 2 to 4.

具体的に説明すると、図３に示すように、連結部材７の一端は、空調機１１の側部１１ａに取り付けられた第１取付金具２１の直上の位置、即ち、空調機１１と空調用吊りボルト６の締結箇所に近接した位置において、第２取付金具２２により空調用吊りボルト６に固定されている。従って、連結部材７は、図１Ｂに示すように、空調機１１から外方に向かって、水平方向に対して下方に傾斜して設けられている。なお、第２取付金具２２は断面略Ｕ字形状の部材であり、湾曲部２２ｂに空調用吊りボルト６を通し、対向する側壁部２２ａで連結部材７の一端を挟み込み、側壁部２２ａ及び連結部材７の一端に設けられた貫通孔にボルトを通してナットで締結することによって、連結部材７の一端は空調用吊りボルト６に固定される。 More specifically, as shown in FIG. 3, one end of the connecting member 7 is positioned immediately above the first mounting bracket 21 attached to the side portion 11a of the air conditioner 11, that is, the air conditioner 11 and the air suspension. At the position close to the fastening location of the bolt 6, it is fixed to the air-conditioning suspension bolt 6 by the second mounting bracket 22. Therefore, as shown in FIG. 1B, the connecting member 7 is provided to be inclined downward with respect to the horizontal direction from the air conditioner 11 to the outside. The second mounting bracket 22 is a member having a substantially U-shaped cross section, the suspension bolt 6 for air conditioning is passed through the curved portion 22b, one end of the connecting member 7 is sandwiched between the opposing side wall portions 22a, and the side wall portion 22a and the connecting member One end of the connecting member 7 is fixed to the air-conditioning suspension bolt 6 by fastening a bolt through a through hole provided at one end of the member 7 with a nut.

また、連結部材７の途中には減衰装置８が設けられている。減衰装置８としては、例えば、オイルダンパー、ガスダンパー、摩擦ダンパー、或いはこれらを組み合わせたもの等が挙げられる。 An attenuator 8 is provided in the middle of the connecting member 7. Examples of the damping device 8 include an oil damper, a gas damper, a friction damper, or a combination of these.

また、本実施形態の天井構造１では、図１Ａに示すように上方から見ると（構造躯体９側から見ると）、空調機１１から放射状に４本の連結部材７（１）〜７（４）がそれぞれ延びている。具体的に説明すると、天井構造１は、空調機１１の左側の側部１１ａから左側に向かって縦方向の奥側に傾斜する方向（第１方向）に延びる連結部材７（１）と、空調機１１の左側の側部１１ａから左側に向かって縦方向の手前側に傾斜する方向（第２方向）に延びる連結部材７（２）と、空調機１１の右側の側部１１ａから縦方向の奥側に傾斜する方向（第２方向）に延びる連結部材７（３）と、空調機１１の右側の側部１１ａから縦方向の手前側に傾斜する方向（第１方向）に延びる連結部材７（４）と、を有する。 Further, in the ceiling structure 1 of the present embodiment, when viewed from above (as viewed from the structural housing 9 side) as shown in FIG. 1A, four connecting members 7 (1) to 7 (4) radially from the air conditioner 11. ) Are extended. More specifically, the ceiling structure 1 includes a connecting member 7 (1) extending in a direction (first direction) inclined from the left side portion 11a of the air conditioner 11 toward the left side in the longitudinal direction, and the air conditioner. The connecting member 7 (2) extending in the direction (second direction) inclined from the left side portion 11a of the machine 11 toward the left side in the vertical direction, and the vertical direction from the right side portion 11a of the air conditioner 11 A connecting member 7 (3) extending in a direction inclined to the back side (second direction) and a connecting member 7 extending in a direction inclined in the longitudinal direction from the side portion 11a on the right side of the air conditioner 11 (first direction). (4)

ここで仮に、図２Ａに示す比較例の天井構造１’のように、連結部材７及び減衰装置８を有さず、空調機１１と天井部材２〜４とがそれぞれ長さの異なる吊りボルト５，６によって個別に吊り下げられているだけであるとする。この場合、地震発生時には、空調機１１と天井部材２〜４とが異なる振動周期でばらばらに横揺れするため、空調機１１（空調用吊りボルト６）と天井部材２〜４（天井用吊りボルト５）とが互いに衝突し、破損・脱落が起こってしまう。 Here, suppose that the ceiling structure 1 ′ of the comparative example shown in FIG. 2A does not have the connecting member 7 and the attenuation device 8, and the air-conditioner 11 and the ceiling members 2 to 4 have the suspension bolts 5 having different lengths. , 6 are only suspended individually. In this case, when the earthquake occurs, the air conditioner 11 and the ceiling members 2 to 4 roll apart at different vibration periods, so the air conditioner 11 (air conditioning suspension bolt 6) and the ceiling members 2 to 4 (ceiling suspension bolts). 5) collide with each other, causing damage and dropout.

また、図２Ａに示す天井構造１’に対して、図２Ｂに示すように、隣接する天井用吊りボルト５間にブレース材２３を設けたり、隣接する空調用吊りボルト６間に交差する２本のブレース材２４を設けたりすることによって、空調機１１と天井部材２〜４の横揺れを抑え、耐震性を向上させることができる。しかし、大規模地震に対する耐震策としては、多数のブレース材２３，２４を取り付ける必要があり、大掛かりな工事になってしまう。また、スペース上の問題によりブレース材２３，２４を適切に取り付けられない場合もある。例えば、図２Ｂに示すように、空調機１１よりも上方の位置にて空調用吊りボルト６間にブレース材２４を設けると、ブレース材２４よりも下方の位置にて空調機１１が横揺れし、ブレース材２４の下端が疲労破断してしまう虞がある。図２Ｂに示す位置ｐが疲労破断し易い箇所である。 In addition, as shown in FIG. 2B, two brace members 23 are provided between the adjacent ceiling suspension bolts 5 or the two air conditioning suspension bolts 6 are intersected with respect to the ceiling structure 1 ′ illustrated in FIG. 2A. By providing the brace material 24, it is possible to suppress the rolling of the air conditioner 11 and the ceiling members 2 to 4 and improve the earthquake resistance. However, as a seismic measure against a large-scale earthquake, it is necessary to attach a large number of brace members 23 and 24, which is a large-scale construction. Further, the brace members 23 and 24 may not be properly attached due to space problems. For example, as shown in FIG. 2B, when the brace material 24 is provided between the air conditioning suspension bolts 6 at a position above the air conditioner 11, the air conditioner 11 rolls at a position below the brace material 24. There is a possibility that the lower end of the brace material 24 may be fatigued. A position p shown in FIG. 2B is a place where fatigue fracture is likely to occur.

これに対して、本実施形態の天井構造１は、一端が空調機１１の側部１１ａにおいて空調機１１に接続され、他端が天井部材２〜４に接続される連結部材７と、その連結部材７の途中に水平方向の振動を吸収する減衰装置８と、を有する。 On the other hand, the ceiling structure 1 of the present embodiment has one end connected to the air conditioner 11 at the side 11a of the air conditioner 11 and the other end connected to the ceiling members 2 to 4 and the connection thereof. A damping device 8 for absorbing horizontal vibration is provided in the middle of the member 7.

そのため、本実施形態の天井構造１では、空調機１１と天井部材２〜４の振動周期の違いを利用して、地震発生時には、空調機１１が錘となって天井部材２〜４の横揺れ（水平方向の揺れ）を制振させることができ、また逆に、天井部材２〜４が錘となって空調機１１の横揺れ（水平方向の揺れ）を制振させることができる。つまり、空調機１１と天井部材２〜４の一方の横揺れを他方が相殺することにより、一方の振動エネルギーが吸収されるため、互いの横揺れを小さくすることができる。従って、空調機１１（空調用吊りボルト５）と天井部材２〜４（天井用吊りボルト６）の衝突を抑え、空調機１１や天井部材２〜４の破損・脱落を抑制することができる。このように、本実施形態の天井構造１では、耐震性を向上させることができる。 Therefore, in the ceiling structure 1 of the present embodiment, by utilizing the difference in vibration period between the air conditioner 11 and the ceiling members 2 to 4, the roll of the ceiling members 2 to 4 becomes a weight when the air conditioner 11 becomes a weight when an earthquake occurs. (Horizontal shake) can be suppressed, and conversely, the ceiling members 2 to 4 can function as weights to suppress the roll (horizontal shake) of the air conditioner 11. That is, since one vibration energy is absorbed when the other cancels one roll of the air conditioner 11 and the ceiling members 2 to 4, the mutual roll can be reduced. Therefore, the collision between the air conditioner 11 (air-conditioning suspension bolt 5) and the ceiling members 2 to 4 (ceiling suspension bolt 6) can be suppressed, and the air conditioner 11 and the ceiling members 2 to 4 can be prevented from being damaged or dropped off. Thus, in the ceiling structure 1 of this embodiment, earthquake resistance can be improved.

なお、仮に、連結部材７に減衰装置８を設けないと、振動周期の異なる空調機１１と天井部材２〜４とが一体となって横揺れすることとなり、両者の接続箇所に力が掛かって破損してしまう虞がある。そのため、連結部材７の途中に減衰装置８を設けることで、空調機１１と天井部材２〜４のそれぞれの横揺れを許容しつつ、空調機１１と天井部材２〜４は互いの横揺れを制振させることができる。また、一般的に、天井２０〜３０ｍ^２に対して空調機１１が１台設置され、天井部材２〜４の２０〜３０ｍ^２当たりの重量は空調機１１の重量の約１割程度であるため、重量比の観点からも、空調機１１と天井部材２〜４は互いの制振装置として適している。 In addition, if the damping device 8 is not provided in the connecting member 7, the air conditioner 11 and the ceiling members 2 to 4 having different vibration periods integrally roll, and a force is applied to the connection portion between them. There is a risk of damage. Therefore, providing the damping device 8 in the middle of the connecting member 7 allows the air conditioner 11 and the ceiling members 2 to 4 to roll each other while allowing the air conditioner 11 and the ceiling members 2 to 4 to roll. Can be damped. Also, in general, is installed the air conditioner 11 is one with respect to the ceiling 20 to 30 m ^2, for the weight of 20 to 30 m ² per ceiling member 2-4 is about about 10% of the weight of the air conditioner 11 Also from the viewpoint of the weight ratio, the air conditioner 11 and the ceiling members 2 to 4 are suitable as mutual vibration damping devices.

また、図２Ａに示すような既存の天井構造１’に対しても、空調機１１周りに連結部材７と減衰装置８を取り付けるだけの簡単な工事により耐震性を向上させることができる。また、本実施形態の天井構造１では、図２Ｂに示すようにブレース材２３，２４を多数設ける必要がないため、施工性が良いとも言える。逆に、図２Ｂに示すようにブレース材２３，２４を設けてしまうと、空調機１１と天井部材２〜４のそれぞれの横揺れが規制され、互いの横揺れを制振させることが難しくなってしまう。そこで、本実施形態の天井構造１では、空調用吊りボルト６間、及び、天井用吊りボルト５間に、ブレース材を設けない。そうすることで、地震発生時に、空調機１１と天井部材２〜４のそれぞれ横揺れを許容しつつ、空調機１１と天井部材２〜４は互いの横揺れを制振させることができる。 Moreover, even with respect to the existing ceiling structure 1 ′ as shown in FIG. 2A, the earthquake resistance can be improved by a simple construction that simply attaches the connecting member 7 and the damping device 8 around the air conditioner 11. Moreover, in the ceiling structure 1 of this embodiment, since it is not necessary to provide many brace materials 23 and 24 as shown to FIG. 2B, it can be said that workability is good. On the other hand, if the brace members 23 and 24 are provided as shown in FIG. 2B, the rolls of the air conditioner 11 and the ceiling members 2 to 4 are restricted, and it becomes difficult to suppress the mutual rolls. End up. Therefore, in the ceiling structure 1 of the present embodiment, no brace material is provided between the air conditioning suspension bolts 6 and between the ceiling suspension bolts 5. By doing so, when an earthquake occurs, the air conditioner 11 and the ceiling members 2 to 4 can control each other's roll while allowing the air conditioner 11 and the ceiling members 2 to 4 to roll.

また、空調機１１の横揺れは、模式的に考えれば、空調用吊りボルト６に接続された振り子としての横揺れと考えることができ、空調機１１はその重心を中心に横揺れする。そのため、仮に、連結部材７の一端を空調機１１の上部に接続してしまうと、連結部材７よりも下方の位置にて空調機１１が横揺れし、連結部材７と空調機１１の接続箇所が疲労破断する虞がある。また、仮に、連結部材７の一端を空調機１１の下部に接続してしまうと、空調機１１の横揺れが規制されてしまう虞がある。そこで、本実施形態の天井構造１では、連結部材７の一端を空調機１１の側部１１ａにおいて空調機１１に接続する。そうすることで、空調機１１の横揺れを連結部材７に効率よく伝達させることができ、空調機１１と天井部材２〜４の横揺れに対する制振効果をより高めることができる。特に、図３に示すように、空調用吊りボルト６と連結部材７の接続箇所の上下方向の高さｈを、空調機１１の重心の位置Ｏの上下方向の高さとおおむね一致させることで、空調機１１と天井部材２〜４の横揺れに対する制振効果を一層高めることができる。 Moreover, if the roll of the air conditioner 11 is considered typically, it can be considered as a roll as a pendulum connected to the suspension bolt 6 for air conditioning, and the air conditioner 11 rolls around its center of gravity. Therefore, if one end of the connecting member 7 is connected to the upper part of the air conditioner 11, the air conditioner 11 rolls at a position below the connecting member 7, and the connection point between the connecting member 7 and the air conditioner 11. There is a risk of fatigue fracture. Further, if one end of the connecting member 7 is connected to the lower part of the air conditioner 11, the roll of the air conditioner 11 may be restricted. Therefore, in the ceiling structure 1 of the present embodiment, one end of the connecting member 7 is connected to the air conditioner 11 at the side portion 11 a of the air conditioner 11. By doing so, the rolling of the air conditioner 11 can be efficiently transmitted to the connecting member 7, and the damping effect on the rolling of the air conditioner 11 and the ceiling members 2 to 4 can be further enhanced. In particular, as shown in FIG. 3, by making the vertical height h of the connecting portion of the air conditioning suspension bolt 6 and the connecting member 7 substantially coincide with the vertical height of the center of gravity O of the air conditioner 11, The damping effect with respect to the rolling of the air conditioner 11 and the ceiling members 2 to 4 can be further enhanced.

また、本実施形態の天井構造１では、連結部材７の一端を空調機１１に直接接続するのではなく、連結部材７の一端を、空調用吊りボルト６に接続することにより、空調機１１に接続する。そうすることで、空調機１１のねじれや歪みや引っ張りを伴うことなく、空調機１１の横揺れを連結部材７に効率よく伝達させることができ、空調機１１と天井部材２〜４の横揺れに対する制振効果をより高めることができる。 Further, in the ceiling structure 1 of the present embodiment, one end of the connecting member 7 is not directly connected to the air conditioner 11, but one end of the connecting member 7 is connected to the air conditioning suspension bolt 6, so that the air conditioner 11 is connected. Connecting. By doing so, the rolling of the air conditioner 11 can be efficiently transmitted to the connecting member 7 without being twisted, distorted or pulled, and the roll of the air conditioner 11 and the ceiling members 2 to 4 can be transmitted. It is possible to further improve the vibration control effect against

また、本実施形態の天井構造１では、上方の構造躯体９から空調用吊りボルト６によって空調機１１を吊り下げて支持するため、空調用吊りボルト６と空調機１１の接続箇所となる第１取付金具２１の周辺には大きな力が掛かる。そのため、第１取付金具２１が剛性の高い部材で構成されたり、第１取付金具２１が取り付けられる空調機１１の部位が頑丈なつくりであったりする。そのため、本実施形態の天井構造１のように、連結部材７の一端を第１取付金具２１の直上の位置にて空調用吊りボルト６に接続することで、連結部材７から空調機１１に及ぼされる力は、第１取付金具２１周辺の頑丈なつくりの部位に及ぼされることとなる。このため、連結部材７から空調機１１に及ぼされる力に起因して空調機１１が変形を起こすリスクを抑えることができる。 Moreover, in the ceiling structure 1 of this embodiment, since the air conditioner 11 is suspended and supported from the upper structural housing 9 by the air conditioning suspension bolts 6, the first connection point between the air conditioning suspension bolts 6 and the air conditioner 11 is used. A large force is applied around the mounting bracket 21. Therefore, the 1st attachment bracket 21 is comprised with a highly rigid member, and the site | part of the air conditioner 11 to which the 1st attachment bracket 21 is attached may be a sturdy structure. Therefore, like the ceiling structure 1 of the present embodiment, one end of the connecting member 7 is connected to the air conditioning suspension bolt 6 at a position directly above the first mounting bracket 21, so that the connecting member 7 extends to the air conditioner 11. The applied force is exerted on a sturdy structure around the first mounting member 21. For this reason, the risk of the air conditioner 11 being deformed due to the force exerted from the connecting member 7 to the air conditioner 11 can be suppressed.

また、地震発生時には、空調機１１と天井構造２〜４，２０とが個別に横揺れするため、天井板４に設けられた吹出口１３と空調機１１との相対位置関係がずれ、空調機１１と吹出口１３とを繋ぐダクトが引っ張られたり圧縮されたり曲げられたりしてしまう。但し、本実施形態の天井構造１では、空調機１１と吹出口１３とを繋ぐダクトをフレキシブルダクト１２にするため、地震発生時にも、フレキシブルダクト１２の破断を抑制することができる。 Moreover, since the air conditioner 11 and the ceiling structures 2 to 4 and 20 individually roll when an earthquake occurs, the relative positional relationship between the air outlet 13 provided in the ceiling plate 4 and the air conditioner 11 is shifted, and the air conditioner The duct which connects 11 and the blower outlet 13 will be pulled, compressed or bent. However, in the ceiling structure 1 of the present embodiment, the duct connecting the air conditioner 11 and the air outlet 13 is the flexible duct 12, so that the flexible duct 12 can be prevented from breaking even when an earthquake occurs.

また、本実施形態の天井構造１は、図１Ａに示すように、上方から見て、第１方向（所定方向）に沿って設けられた連結部材７（１），７（４）（第１の連結部材）と、第１方向と交差する方向である第２方向に沿って設けられた連結部材７（２），７（３）（第２の連結部材）と、を有する。そのため、天井構造１は、上方から見て、交差する２方向（好ましくは直交する２方向）の揺れを制振させる減衰装置８を有することとなる。ゆえに、Ｘ方向の地震力による空調機１１及び天井部材２〜４の横揺れも、Ｙ方向の地震力による空調機１１及び天井部材２〜４の横揺れも、制振させることができる。 In addition, as shown in FIG. 1A, the ceiling structure 1 of the present embodiment has connecting members 7 (1), 7 (4) (first) provided along a first direction (predetermined direction) when viewed from above. And connecting members 7 (2) and 7 (3) (second connecting member) provided along a second direction that intersects the first direction. Therefore, the ceiling structure 1 has an attenuation device 8 that suppresses vibrations in two intersecting directions (preferably in two orthogonal directions) when viewed from above. Therefore, the rolling of the air conditioner 11 and the ceiling members 2 to 4 due to the seismic force in the X direction and the rolling of the air conditioner 11 and the ceiling members 2 to 4 due to the seismic force in the Y direction can be suppressed.

また、天井用吊りボルト５は比較的に剛性の低い部材である。そのため、連結部材７及び減衰装置８を水平方向に沿って設けるために、仮に、連結部材７の他端を天井用吊りボルト５の長手方向における中央部に接続した場合、空調機１１の横揺れによって天井用吊りボルト５が変形し、空調機１１の横揺れを天井部材２〜４に伝達することができない虞がある。これに対して、本実施形態の天井構造１では、連結部材７の他端が吊りハンガー２０（第２の吊り下げ部材の下端）に接続され、連結部材７及び減衰装置８が水平方向に対して傾斜して設けられている。このように、連結部材７の他端を吊りハンガー２０に接続することで、空調機１１の横揺れを天井部材２〜４に伝達することができ、空調機１１の横揺れを天井部材２〜４の横揺れの制振に利用することができる。なお、連結部材７の他端を、例えば、図３に示す第２取付部材２２のような取付部材を介して、天井用吊りボルト５の下端に接続する場合や、第１枠部材２や第２枠部材３（天井部材）に接続する場合にも同じことが言える。 The ceiling suspension bolt 5 is a member having relatively low rigidity. Therefore, in order to provide the connecting member 7 and the attenuation device 8 along the horizontal direction, if the other end of the connecting member 7 is connected to the central portion in the longitudinal direction of the ceiling suspension bolt 5, the air conditioner 11 rolls. As a result, the suspension bolt 5 for the ceiling is deformed, and the roll of the air conditioner 11 may not be transmitted to the ceiling members 2 to 4. On the other hand, in the ceiling structure 1 of the present embodiment, the other end of the connecting member 7 is connected to the hanging hanger 20 (the lower end of the second hanging member), and the connecting member 7 and the attenuation device 8 are in the horizontal direction. Are inclined. Thus, by connecting the other end of the connecting member 7 to the hanging hanger 20, the roll of the air conditioner 11 can be transmitted to the ceiling members 2 to 4, and the roll of the air conditioner 11 can be transmitted to the ceiling members 2 to 2. It can be used for vibration control of 4 rolls. The other end of the connecting member 7 is connected to the lower end of the ceiling suspension bolt 5 via an attachment member such as the second attachment member 22 shown in FIG. The same is true when connecting to the two-frame member 3 (ceiling member).

図４は、天井構造１の変形例を説明する図である。上記の天井構造１では（図１Ｂ）、連結部材７が水平方向に対して傾斜して設けられているが、これに限らない。例えば、図４に示すように、天井用吊りボルト５よりも剛性の高い剛性部材２５が、第１枠部材２や第２枠部材３（天井部材）から立設し、連結部材７の他端が剛性部材２５に接続され、連結部材７が水平方向に沿って設けられた天井構造１であってもよい。剛性部材２５は、天井用吊りボルト５に比べ、空調機１１の横揺れによって変形し難いため、空調機１１の横揺れが剛性部材２５を介して天井部材２〜４に伝達され、空調機１１の横揺れを天井部材２〜４の横揺れの制振に利用することができる。また、図４の天井構造１では、減衰装置８を水平方向に沿って設けることができるため、上記の天井構造１に比べて、空調機１１と天井部材２〜４の横揺れに対する制振効果を高めることができる。但し、上記の天井構造１の方が、剛性部材２５の分だけ部材数を減らしたり、天井裏のスペースを有効に利用したりすることができる。 FIG. 4 is a diagram for explaining a modification of the ceiling structure 1. In the ceiling structure 1 (FIG. 1B), the connecting member 7 is provided to be inclined with respect to the horizontal direction, but the present invention is not limited to this. For example, as shown in FIG. 4, a rigid member 25 having a rigidity higher than that of the ceiling suspension bolt 5 is erected from the first frame member 2 or the second frame member 3 (ceiling member), and the other end of the connecting member 7. May be connected to the rigid member 25, and the ceiling structure 1 in which the connecting member 7 is provided along the horizontal direction may be used. Since the rigid member 25 is less likely to be deformed by the roll of the air conditioner 11 than the suspension bolt 5 for the ceiling, the roll of the air conditioner 11 is transmitted to the ceiling members 2 to 4 through the rigid member 25, and the air conditioner 11. Can be used for damping the rolling of the ceiling members 2 to 4. Further, in the ceiling structure 1 of FIG. 4, the damping device 8 can be provided along the horizontal direction. Therefore, compared to the ceiling structure 1 described above, the vibration damping effect on the roll of the air conditioner 11 and the ceiling members 2 to 4 is achieved. Can be increased. However, the above-described ceiling structure 1 can reduce the number of members by the amount of the rigid member 25 or can effectively use the space behind the ceiling.

以上、上記実施形態は、本発明の理解を容易にするためのものであり、本発明を限定して解釈するためのものではない。本発明は、その趣旨を逸脱することなく、変更、改良され得ると共に、本発明にはその等価物が含まれることはいうまでもない。 As mentioned above, the said embodiment is for making an understanding of this invention easy, and is not for limiting and interpreting this invention. The present invention can be changed and improved without departing from the gist thereof, and it is needless to say that the present invention includes equivalents thereof.

上記実施形態では、システム天井を例に挙げているがこれに限らず、例えば、在来天井であってもよい。また、上記実施形態では、設備機器を空調機としているが、これに限らず、設備機器を、例えば、音響機器や照明機器等にしてもよい。また、上記実施形態では（図１Ａ）、交差する２方向に沿って連結部材を設けているが、これに限らず、例えば、１方向に沿ってのみ連結部材を設けたり、３方向以上に沿って連結部材を設けたりしてもよい。また、上記実施形態では、１つの空調機に対して４つの連結部材を設けているが、連結部材の数はこれに限らない。また、上記実施形態では、連結部材の一端を空調用吊りボルトに接続しているが、これに限らず、連結部材の一端を空調機（設備機器）に直接接続してもよい。また、上記実施形態では、空調用吊りボルト間及び天井用吊りボルト間にブレース材を設けないとしているが、これに限らず、空調用吊りボルト間や天井用吊りボルト間にブレース材を設けてもよい。 In the above embodiment, the system ceiling is taken as an example, but the present invention is not limited to this, and for example, a conventional ceiling may be used. Moreover, in the said embodiment, although the equipment was used as the air conditioner, it is not restricted to this, For example, you may be set as an audio equipment, an illuminating device, etc. Moreover, in the said embodiment (FIG. 1A), although the connection member is provided along two intersecting directions, it is not restricted to this, For example, a connection member is provided only along one direction, or along three or more directions. A connecting member may be provided. Moreover, in the said embodiment, although four connection members are provided with respect to one air conditioner, the number of connection members is not restricted to this. Moreover, in the said embodiment, although the end of the connection member is connected to the suspension bolt for air conditioning, it is not restricted to this, You may connect the end of a connection member directly to an air conditioner (equipment equipment). In the above embodiment, the brace material is not provided between the air conditioning suspension bolts and between the ceiling suspension bolts. However, the present invention is not limited thereto, and the brace material is provided between the air conditioning suspension bolts or between the ceiling suspension bolts. Also good.

１天井構造、２第１枠部材（天井部材）、３第２枠部材（天井部材）、
４天井板（天井部材）、５天井用吊りボルト（第２の吊り下げ部材）、
６空調用吊りボルト（第１の吊り下げ部材）、７連結部材、８減衰装置、
１０空調装置、１１空調機（設備機器）、
１２フレキシブルダクト（可撓性を有するダクト）、１３吹出口、
２０吊りハンガー（第２の吊り下げ部材）、２１第１取付金具、
２２第２取付金具、２３ブレース材、２４ブレース材、２５剛性部材 1 ceiling structure, 2 first frame member (ceiling member), 3 second frame member (ceiling member),
4 ceiling board (ceiling member), 5 ceiling suspension bolt (second suspension member),
6 air-conditioning suspension bolt (first suspension member), 7 connecting member, 8 damping device,
10 air conditioner, 11 air conditioner (equipment),
12 flexible ducts (ducts with flexibility), 13 outlets,
20 suspension hanger (second suspension member), 21 first mounting bracket,
22 second mounting bracket, 23 brace material, 24 brace material, 25 rigid member

Claims

Equipment and equipment
A ceiling member;
A first suspension member for supporting the facility device by suspending it from a structural housing;
A second suspension member that is longer than the first suspension member and supports the ceiling member by suspending it from the structural housing;
One end is connected to the equipment at the side of the equipment, and the other end is connected to the ceiling member;
A damping device provided in the middle of the connecting member and absorbing horizontal vibration;
Have
A ceiling structure characterized in that no brace material is provided between the first suspension members and between the second suspension members .

The ceiling structure according to claim 1,
The connecting member includes a first connecting member provided along a predetermined direction as viewed from above, and a second connecting member provided along a direction intersecting the predetermined direction. And ceiling structure.

The ceiling structure according to claim 1 or 2,
The other end of the connecting member is connected to the ceiling member via the lower end of the second suspension member or directly , and the connecting member is provided to be inclined with respect to the horizontal direction. Ceiling structure.

The ceiling structure according to claim 1 or 2,
A rigid member having rigidity higher than that of the second suspension member is erected from the ceiling member;
The ceiling structure, wherein the other end of the connecting member is directly connected to the rigid member, and the connecting member is provided along a horizontal direction.

The ceiling structure according to any one of claims 1 to 4,
The ceiling structure, wherein the one end of the connecting member is connected to the equipment by being directly connected to the first suspension member.

The ceiling structure according to any one of claims 1 to 5 ,
The equipment is an air conditioner,
The ceiling structure characterized by the blower outlet provided in the said ceiling member, and the said air conditioner being connected by the duct which has flexibility.