JP2018059324A - Reinforcement structure of ceiling panel and ceiling - Google Patents

Reinforcement structure of ceiling panel and ceiling Download PDF

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JP2018059324A
JP2018059324A JP2016197452A JP2016197452A JP2018059324A JP 2018059324 A JP2018059324 A JP 2018059324A JP 2016197452 A JP2016197452 A JP 2016197452A JP 2016197452 A JP2016197452 A JP 2016197452A JP 2018059324 A JP2018059324 A JP 2018059324A
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ceiling
reinforcing member
connecting portion
cross
pair
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JP6837798B2 (en
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英喜 蒲澤
Hideki Kabasawa
英喜 蒲澤
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Bridgestone Corp
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Bridgestone Corp
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Abstract

PROBLEM TO BE SOLVED: To provide a reinforcement structure of a ceiling panel and a ceiling to improve ceiling rigidity against a downward load.SOLUTION: A reinforcement structure in accordance with the present invention is provided with a cross reinforcement member connected to each of a pair of ceiling panels adjacent to each other, whereas the cross reinforcement member, in a plane view, extends in a direction perpendicular to a direction parallel to an extended direction of a connected portion at which each edge of a pair of the ceiling panel is abutted to a respective edge of a pair of the ceiling panel, and intersects the connected portion.SELECTED DRAWING: Figure 2

Description

この発明は、例えばユニットバス等のユニットルームの天井に好適に適用し得る、天井パネルの補強構造、及び天井に関するものである。   The present invention relates to a ceiling panel reinforcing structure and a ceiling that can be suitably applied to a ceiling of a unit room such as a unit bath.

従来、複数の天井パネルからなる天井として、互いに隣接する天井パネルの端縁どうしが突き合わされて接続された接続部に、接続部に沿って延在する補強部材（連結部材）が取り付けられたものがある（例えば、特許文献１）。   Conventionally, as a ceiling composed of a plurality of ceiling panels, a reinforcing member (linking member) extending along the connecting portion is attached to a connecting portion in which the edges of adjacent ceiling panels are connected to each other. (For example, Patent Document 1).

特開平8-302889号公報JP-A-8-302889

しかし、上記のような天井では、天井パネルどうしの接続部の下向きの荷重に対する強度が十分ではなく、天井の自重等による天井の垂れ下がりを、十分に抑制できなかった。そのため、例えば、上記の天井を、ユニットバス等のユニットルームの天井に用いる場合、ユニットルームを組み立てる際の組み立て手順に制約が生じるために、ユニットルームの施工性を向上できない、などといった問題があった。   However, in the ceiling as described above, the strength against the downward load of the connection portion between the ceiling panels is not sufficient, and the drooping of the ceiling due to the weight of the ceiling cannot be sufficiently suppressed. For this reason, for example, when the above ceiling is used for the ceiling of a unit room such as a unit bath, there is a problem in that the construction procedure of the unit room cannot be improved due to restrictions on the assembly procedure when assembling the unit room. It was.

この発明は、上述した課題を解決するためのものであり、下向きの荷重に対する天井の剛性を向上できる、天井パネルの補強構造、及び天井を、提供することを目的とするものである。   An object of the present invention is to provide a ceiling panel reinforcing structure and a ceiling that can improve the rigidity of the ceiling against a downward load.

本発明の天井パネルの補強構造は、互いに隣接する一対の天井パネルのそれぞれに取り付けられた、交差補強部材を備え、平面視において、前記交差補強部材は、前記一対の天井パネルの端縁どうしが突き合わされて接続された接続部に平行な接続部延在方向に対して交差する方向に延在しているとともに、該接続部と交差している。
本発明の天井パネルの補強構造によれば、下向きの荷重に対する天井の剛性を向上できる。 A reinforcing structure for a ceiling panel according to the present invention includes a cross reinforcing member attached to each of a pair of adjacent ceiling panels. In plan view, the cross reinforcing members have edges of the pair of ceiling panels. It extends in a direction intersecting with the connecting portion extending direction parallel to the connecting portion that is abutted and connected, and intersects the connecting portion.
According to the reinforcing structure for a ceiling panel of the present invention, the rigidity of the ceiling against a downward load can be improved.

本発明の天井パネルの補強構造において、平面視において、前記交差補強部材の両端部は、前記一対の天井パネルの配列方向における前記一対の天井パネルのそれぞれの中心よりも、前記配列方向の外側に位置すると、好適である。
この構成によれば、下向きの荷重に対する天井の剛性を向上できる。 In the ceiling panel reinforcing structure of the present invention, in a plan view, both end portions of the cross reinforcing member are outside the center of the pair of ceiling panels in the array direction of the pair of ceiling panels. If located, it is preferred.
According to this configuration, the ceiling rigidity against a downward load can be improved.

本発明の天井パネルの補強構造において、平面視において、前記交差補強部材は、前記接続部の両端部よりも前記接続部延在方向の内側で、該接続部と交差していると、好適である。
この構成によれば、下向きの荷重に対する天井の剛性を向上できる。 In the reinforcing structure for a ceiling panel of the present invention, it is preferable that the cross reinforcing member intersects the connecting portion on the inner side in the connecting portion extending direction from both ends of the connecting portion in plan view. is there.
According to this configuration, the ceiling rigidity against a downward load can be improved.

本発明の天井パネルの補強構造において、平面視において、前記一対の天井パネルは、それぞれ、前記天井パネルの外周縁よりも内側にリブを有しており、前記交差補強部材は、前記一対の天井パネルのそれぞれの前記リブに取り付けられていると、好適である。
この構成によれば、天井の施工性を向上できる。 In the ceiling panel reinforcing structure of the present invention, the pair of ceiling panels each have a rib inside the outer peripheral edge of the ceiling panel in plan view, and the cross reinforcing members are the pair of ceilings. Suitably attached to each said rib of the panel.
According to this configuration, the workability of the ceiling can be improved.

本発明の天井パネルの補強構造において、平面視において、複数の前記交差補強部材が、それぞれ、前記接続部の両端部よりも前記接続部延在方向の内側で、該接続部と交差しており、前記複数の交差補強部材は、それぞれ、前記一対の天井パネルの配列方向に、平行であると、好適である。
この構成によれば、下向きの荷重に対する天井の剛性を向上できる。 In the ceiling panel reinforcing structure of the present invention, in a plan view, the plurality of cross-reinforcing members each intersect the connecting portion inside the connecting portion extending direction from both ends of the connecting portion. Each of the plurality of cross reinforcing members is preferably parallel to the arrangement direction of the pair of ceiling panels.
According to this configuration, the ceiling rigidity against a downward load can be improved.

本発明の天井パネルの補強構造において、前記接続部延在方向に延在するとともに該接続部に取り付けられた、接続部補強部材を、さらに備えていると、好適である。
この構成によれば、下向きの荷重に対する天井の剛性を向上できる。 In the reinforcing structure for a ceiling panel according to the present invention, it is preferable that a connection portion reinforcing member that extends in the connecting portion extending direction and is attached to the connecting portion is further provided.
According to this configuration, the ceiling rigidity against a downward load can be improved.

本発明の天井パネルの補強構造において、平面視において、前記交差補強部材と前記接続部補強部材とは、互いに交差していないと、好適である。
この構成によれば、天井全体の剛性のバランスを良好にできる。 In the ceiling panel reinforcing structure of the present invention, it is preferable that the cross reinforcing member and the connecting portion reinforcing member do not cross each other in plan view.
According to this structure, the balance of the rigidity of the whole ceiling can be made favorable.

本発明の天井パネルの補強構造において、平面視において、前記接続部の前記接続部延在方向の中心に対する前記接続部延在方向の両側で、一対の前記交差補強部材が、それぞれ前記接続部と交差しており、平面視において、前記接続部補強部材は、前記一対の交差補強部材どうしの間に位置していると、好適である。
この構成によれば、下向きの荷重に対する天井の剛性を向上できる。 In the reinforcing structure for a ceiling panel of the present invention, in a plan view, a pair of the cross reinforcing members on each side of the connecting portion extending direction with respect to the center of the connecting portion extending direction of the connecting portion is respectively connected to the connecting portion. It is preferable that the connecting portion reinforcing members are crossed and located between the pair of cross reinforcing members in plan view.
According to this configuration, the ceiling rigidity against a downward load can be improved.

本発明の天井パネルの補強構造において、平面視において、前記交差補強部材は、前記接続部の両端部のうち該交差補強部材に隣接するほうの端部よりも、前記接続部補強部材の両端部のうち該交差補強部材に隣接するほうの端部に近い位置で、前記接続部と交差していると、好適である。
この構成によれば、下向きの荷重に対する天井の剛性を向上できる。 In the reinforcing structure for a ceiling panel according to the present invention, in cross-sectional view, the cross reinforcing member has both end portions of the connecting portion reinforcing member rather than the end portion adjacent to the cross reinforcing member among the both end portions of the connecting portion. It is preferable that the connection portion is crossed at a position close to the end portion adjacent to the cross reinforcing member.
According to this configuration, the ceiling rigidity against a downward load can be improved.

本発明の天井は、互いに接続された複数の天井パネルと、前記複数の天井パネルのうち、少なくとも互いに隣接する一対の天井パネルに取り付けられた、請求項１〜９のいずれか一項に記載の天井パネルの補強構造と、を備えている。
本発明の天井によれば、下向きの荷重に対する天井の剛性を向上できる。 The ceiling according to any one of claims 1 to 9, wherein the ceiling of the present invention is attached to a plurality of ceiling panels connected to each other and at least a pair of ceiling panels adjacent to each other among the plurality of ceiling panels. And a reinforcing structure for the ceiling panel.
According to the ceiling of the present invention, the rigidity of the ceiling against a downward load can be improved.

この発明によれば、下向きの荷重に対する天井の剛性を向上できる、天井パネルの補強構造、及び天井を、提供することができる。   According to the present invention, it is possible to provide a ceiling panel reinforcing structure and a ceiling capable of improving the rigidity of the ceiling against a downward load.

本発明の一実施形態に係る天井パネルの補強構造を有する天井を備えた、ユニットバスを示す、斜視図である。It is a perspective view which shows the unit bath provided with the ceiling which has the reinforcement structure of the ceiling panel which concerns on one Embodiment of this invention. 図１の天井を示す平面図である。It is a top view which shows the ceiling of FIG. 図１の天井を示す斜視図である。It is a perspective view which shows the ceiling of FIG. 図４（ａ）は、図１の天井の一部を、図３のＡ−Ａ線に沿う断面とともに示す、一部断面斜図である。図４（ｂ）は、図１の天井のうち、図３の破線の円Ｂで囲った部分を、切り欠き断面とともに示す、一部断面斜図である。4A is a partial cross-sectional oblique view showing a part of the ceiling of FIG. 1 together with a cross section taken along line AA of FIG. FIG. 4B is a partial cross-sectional oblique view showing a portion surrounded by a broken-line circle B in FIG. 3 in the ceiling of FIG. 1 together with a cut-out cross section. 図５（ａ）及び図５（ｂ）は、天井の撓もうとする方向を説明するための図である。FIG. 5A and FIG. 5B are diagrams for explaining the direction in which the ceiling is bent. 図１のユニットバスの組み立て手順の一例を説明するための図であり、天井を組み立てる様子を示す図である。It is a figure for demonstrating an example of the assembly procedure of the unit bus | bath of FIG. 1, and is a figure which shows a mode that a ceiling is assembled. 図６のユニットバスの組み立て手順の例において、天井を支柱に組み付ける様子を示す図である。FIG. 7 is a diagram illustrating a state in which the ceiling is assembled to the support in the example of the assembly procedure of the unit bus in FIG. 6. 図６のユニットバスの組み立て手順の例において、壁パネルを組み付ける様子を示す図である。It is a figure which shows a mode that a wall panel is assembled | attached in the example of the assembly procedure of the unit bus | bath of FIG. 本発明の一変形例に係る天井パネルの補強構造を有する天井を示す、平面図である。It is a top view which shows the ceiling which has the reinforcement structure of the ceiling panel which concerns on one modification of this invention.

以下に、図面を参照しつつ、この発明に係る天井パネルの補強構造、及び天井の実施形態を例示説明する。   Hereinafter, embodiments of a ceiling panel reinforcing structure and a ceiling according to the present invention will be described with reference to the drawings.

図１〜図８は、本発明の一実施形態に係る天井パネルの補強構造、及び天井を説明するための図である。
図１は、本実施形態の天井パネルの補強構造を有する天井５０を備えたユニットバス１を示している。本例において、ユニットバス１は、浴槽１０と、洗い場２０と、複数の壁パネル３０と、ドア（図示せず）と、複数（本例では２つ）の天井パネル５００と、壁パネル３０や天井パネル５００を支持する支柱４０と、を備えている。本例では、ユニットバス１が、２つの天井パネル５００を備えており、これら２つの天井パネル５００が、締結によって接続されて、本実施形態の天井５０を構成している。ユニットバス１の四隅のコーナー部には、それぞれ、鉛直に延びる支柱４０が設置されている。支柱４０どうしの間には、壁パネル３０やドアが配置されている。支柱４０の上端には、天井５０が配設されている。
図１の例において、ユニットバス１は、浴槽１０と洗い場２０とが別体であって、洗い場２０を構成する防水パン２１が浴槽１０の下側にまで延長された、いわゆるフルパンタイプのユニットバスである。しかし、本実施形態の天井５０は、浴槽１０と洗い場２０とが一体に構成され、浴槽１０の下側に防水パンを有しない、いわゆるハーフパンタイプのユニットバス等、任意のユニットルームに好適に適用できるものである。 FIGS. 1-8 is a figure for demonstrating the reinforcement structure of the ceiling panel which concerns on one Embodiment of this invention, and a ceiling.
FIG. 1 shows a unit bus 1 including a ceiling 50 having a ceiling panel reinforcing structure of the present embodiment. In this example, the unit bath 1 includes a bathtub 10, a washing area 20, a plurality of wall panels 30, a door (not shown), a plurality (two in this example) of ceiling panels 500, a wall panel 30, And a support column 40 that supports the ceiling panel 500. In this example, the unit bus 1 includes two ceiling panels 500, and the two ceiling panels 500 are connected by fastening to constitute the ceiling 50 of the present embodiment. At the corners of the four corners of the unit bus 1, vertical support columns 40 are respectively installed. A wall panel 30 and a door are disposed between the columns 40. A ceiling 50 is disposed at the upper end of the column 40.
In the example of FIG. 1, a unit bath 1 is a so-called full pan type unit bath in which a bathtub 10 and a washing place 20 are separate bodies and a waterproof pan 21 constituting the washing place 20 is extended to the lower side of the bathtub 10. It is. However, the ceiling 50 of the present embodiment is suitably applied to an arbitrary unit room such as a so-called half-pan type unit bath in which the bathtub 10 and the washing place 20 are integrally formed and does not have a waterproof pan below the bathtub 10. It can be done.

図１の例では、天井５０を構成する一対の天井パネル５００のうち、一方の天井パネル５００は、浴槽１０の上側に位置し、例えば換気扇や照明器具を取り付けるための、貫通孔５０３ａを有している。また、他方の天井パネル５００は、洗い場２０の上側に位置し、例えば点検口用の、貫通孔５０３ｂを有している。   In the example of FIG. 1, one of the pair of ceiling panels 500 constituting the ceiling 50 is located on the upper side of the bathtub 10 and has, for example, a through hole 503 a for attaching a ventilation fan or a lighting fixture. ing. The other ceiling panel 500 is located on the upper side of the washing place 20 and has, for example, a through hole 503b for an inspection port.

図２は、本実施形態の天井５０をその上側から平面視したときの様子を示しており、図３は、本実施形態の天井５０をその斜め上側から観たときの様子を示している。本例において、天井５０は、互いに隣接する一対の天井パネル５００と、これらの天井パネル５００の上面側（裏面側）に取り付けられた、天井パネルの補強構造とを、備えている。本実施形態において、天井パネルの補強構造は、交差補強部材５２０と接続部補強部材５４０とを有している。   FIG. 2 shows a state when the ceiling 50 of the present embodiment is viewed in plan from the upper side, and FIG. 3 shows a state when the ceiling 50 of the present embodiment is viewed from the oblique upper side. In this example, the ceiling 50 includes a pair of ceiling panels 500 adjacent to each other and a ceiling panel reinforcing structure attached to the upper surface side (back surface side) of these ceiling panels 500. In the present embodiment, the ceiling panel reinforcing structure includes a cross reinforcing member 520 and a connecting portion reinforcing member 540.

天井パネル５００は、例えば、繊維強化プラスチック（ＦＲＰ：Fiber-Reinforced Plastics）等の樹脂から形成される。本例において、天井パネル５００は、天井パネル５００の下面を構成するベース板５０３と、ベース板５０３の外周縁に沿ってベース板５０３の上面（裏面）に垂直に立設されたフランジ５０２と、フランジ５０２よりも内側（内周側）で、ベース板５０３の上面（裏面）に垂直に立設された補強用のリブ５０４とを、有している。ベース板５０３、フランジ５０２、及びリブ５０４は、一体に構成されている。本例において、各天井パネル５００は、平面視において長方形に形成されている。
本明細書では、天井パネル５００の平面視において、天井パネル５００のなす長方形状の長辺の延在方向を「パネル長手方向ＬＤ」といい、この長手方向ＬＤに垂直な、当該長方形状の短辺の延在方向を「パネル幅方向ＷＤ」という。
リブ５０４は、それぞれパネル長手方向ＬＤに平行に延在するとともに互いからパネル幅方向ＷＤに離間された、複数の縦リブ５０４Ｌと、それぞれパネル幅方向ＷＤに平行に延在するとともに互いからパネル長手方向ＬＤに離間された、複数の横リブ５０４Ｗとを、有している。本例では、縦リブ５０４Ｌと横リブ５０４Ｗとが、天井パネル５００の一部の領域で、垂直に交差している。 The ceiling panel 500 is made of, for example, a resin such as fiber reinforced plastic (FRP). In this example, the ceiling panel 500 includes a base plate 503 that constitutes the lower surface of the ceiling panel 500, a flange 502 that is erected perpendicularly to the upper surface (back surface) of the base plate 503 along the outer peripheral edge of the base plate 503, A reinforcing rib 504 is provided on the inner side (inner peripheral side) of the flange 502 and vertically provided on the upper surface (back surface) of the base plate 503. The base plate 503, the flange 502, and the rib 504 are integrally formed. In this example, each ceiling panel 500 is formed in a rectangular shape in plan view.
In the present specification, in the plan view of the ceiling panel 500, the extending direction of the long side of the rectangular shape formed by the ceiling panel 500 is referred to as “panel longitudinal direction LD”, and the rectangular short direction perpendicular to the longitudinal direction LD is referred to as “longitudinal direction LD”. The extending direction of the side is referred to as “panel width direction WD”.
Each of the ribs 504 extends in parallel to the panel longitudinal direction LD and is spaced apart from each other in the panel width direction WD, and each of the ribs 504 extends in parallel to the panel width direction WD and extends from each other in the panel longitudinal direction. And a plurality of lateral ribs 504W spaced apart in the direction LD. In this example, the vertical ribs 504L and the horizontal ribs 504W intersect each other vertically in a partial area of the ceiling panel 500.

天井５０を構成する一対の天井パネル５００は、それぞれのパネル長手方向ＬＤに平行な端縁（フランジ５０２と、ベース板５０３のうちフランジ５０２の下側に連続する部分とからなる、端壁）５０１どうしが突き合わされた状態で、互いに接続されている。天井パネル５００の端縁５０１どうしが突き合わせられて接続された部分は、接続部Ｊを構成する。本例において、接続部Ｊは、パネル長手方向ＬＤに平行に延在している。接続部Ｊでは、両側の天井パネル５００のフランジ５０２どうしが、互いに接触した状態で、ビス等の固定具Ｆにより、締結により接続されている。
本明細書では、接続部Ｊに平行な方向を「接続部延在方向ＪＤ」という。本例において、接続延在方向ＪＤは、パネル長手方向ＬＤに平行である。
また、一対の天井パネル５００が配列された（並んだ）方向を「配列方向ＡＤ」という。配列方向ＡＤは、平面視において、一対の天井パネル５００のそれぞれの外形状（本例では長方形）の幾何学的中心点どうしを通る直線の延在方向とする。本例において、配列方向ＡＤは、天井パネル５００のパネル幅方向ＷＤに平行であり、接続部延在方向ＪＤに対して垂直である。 A pair of ceiling panels 500 constituting the ceiling 50 are end edges parallel to the respective panel longitudinal directions LD (end walls composed of a flange 502 and a portion of the base plate 503 continuous below the flange 502) 501. They are connected to each other with their faces facing each other. The portion where the end edges 501 of the ceiling panel 500 are connected to each other constitutes a connection portion J. In this example, the connecting portion J extends in parallel with the panel longitudinal direction LD. In the connection portion J, the flanges 502 of the ceiling panels 500 on both sides are connected to each other by fastening with a fixing tool F such as a screw while being in contact with each other.
In this specification, a direction parallel to the connection portion J is referred to as a “connection portion extending direction JD”. In this example, the connection extending direction JD is parallel to the panel longitudinal direction LD.
The direction in which the pair of ceiling panels 500 are arranged (arranged) is referred to as an “arrangement direction AD”. The arrangement direction AD is an extension direction of a straight line passing through the geometric center points of the outer shapes (rectangular in this example) of the pair of ceiling panels 500 in plan view. In this example, the arrangement direction AD is parallel to the panel width direction WD of the ceiling panel 500 and is perpendicular to the connection portion extending direction JD.

天井は、一般的に、四方の壁の上端に配設された状態においては、天井の外周縁側では、壁によって支えられているので下側に撓みにくいが、天井の内周側（中央部）では、天井を支えるものが無いため、天井の自重や、天井に取り付けられる換気扇や照明器具等の荷重によって、下側に撓みやすい。特に、本実施形態のように、天井が互いに分割された複数の天井パネル５００から構成される場合、天井パネルどうしの接続部Ｊでは、下向きの荷重に対する強度が特に弱いため、天井が１つの天井パネルのみから構成される場合に比べて、垂れ下がりやすいという傾向がある。
交差補強部材５２０及び接続部補強部材５４０は、一対の天井パネル５００どうしの接続部Ｊの下向きの荷重に対する剛性を高め、ひいては、天井５０全体の剛性を高めて、天井５０が下側に撓むのを抑制するものである。 In general, when the ceiling is arranged at the upper end of the four walls, the outer peripheral edge of the ceiling is supported by the wall, so it is difficult to bend downward, but the inner peripheral side (center part) of the ceiling Then, since there is nothing to support the ceiling, it tends to bend downward due to the weight of the ceiling or the load of a ventilation fan or a lighting fixture attached to the ceiling. In particular, as in the present embodiment, when the ceiling is composed of a plurality of ceiling panels 500 that are divided from each other, the connection portion J between the ceiling panels has a particularly low strength against a downward load. There is a tendency that it is more likely to sag than in the case of being composed only of panels.
The cross reinforcing member 520 and the connecting portion reinforcing member 540 increase the rigidity with respect to the downward load of the connecting portion J between the pair of ceiling panels 500, and consequently increase the rigidity of the entire ceiling 50, so that the ceiling 50 bends downward. It is what suppresses.

交差補強部材５２０及び接続部補強部材５４０は、それぞれ、天井パネル５００を構成する材料よりも硬い材料で構成されると好適であり、本例では、金属材料から構成されている。本例では、交差補強部材５２０及び接続部補強部材５４０は、直線状に延在するビーム状に構成されている。より具体的に、本例では、交差補強部材５２０及び接続部補強部材５４０は、断面Ｌ字型のアングル（山形鋼）であり、そのため、それぞれの延在方向に対して垂直な方向に非常に曲がりにくいものである。   The cross reinforcing member 520 and the connecting portion reinforcing member 540 are each preferably made of a material harder than the material constituting the ceiling panel 500, and in this example, made of a metal material. In this example, the cross reinforcing member 520 and the connecting portion reinforcing member 540 are configured in a beam shape extending linearly. More specifically, in this example, the cross reinforcing member 520 and the connecting portion reinforcing member 540 are angles with an L-shaped cross section (an angle steel), and therefore are extremely perpendicular to the extending direction. It is hard to bend.

本実施形態では、接続部補強部材５４０が、接続部Ｊに取り付けられている。平面視において、接続部補強部材５４０は、接続部Ｊに沿って、接続部延在方向ＪＤに延在している。
より具体的に、本例では、図２、図３、及び、図３のＡ−Ａ線に沿う断面を示す図４（ａ）に示すように、接続部補強部材５４０は、互いに垂直な一対の平板状の片部５４０ａ、５４０ｂどうしが一体に構成されている。接続部補強部材５４０の一方の片部５４０ａは、接続部Ｊの配列方向ＡＤの外側の面に当接しており、より具体的には、接続部Ｊを構成する各天井パネル５００のフランジ５０２の、互いとの接触面とは反対側の面に当接している。そして、接続部補強部材５４０の片部５４０ａに予め形成された複数の貫通孔５４０ａ（図６）には、それぞれ、ビス等の固定具Ｆが通されており、固定具Ｆは、接続部Ｊを構成する各フランジ５０２をも貫通している。このようにして、接続部補強部材５４０が、接続部Ｊで、各天井パネル５００に、締結により取り付けられている。
接続部補強部材５４は、接続部Ｊに平行に接続部Ｊに取り付けられているので、主に、下向きの荷重に対する接続部Ｊの強度を高めることができ、ひいては、接続部延在方向ＪＤに平行な鉛直平面内で接続部Ｊが下側に凸の湾曲形状（図５（ａ）参照。）になろうとするような、天井５０の撓みを、抑制するように作用する。 In the present embodiment, the connection portion reinforcing member 540 is attached to the connection portion J. In plan view, the connection portion reinforcing member 540 extends in the connection portion extension direction JD along the connection portion J.
More specifically, in this example, as shown in FIG. 2, FIG. 3, and FIG. 4 (a) showing a cross section along the line AA in FIG. 3, the connection portion reinforcing member 540 is a pair perpendicular to each other. The flat plate-like pieces 540a and 540b are integrally formed. One piece 540a of the connection portion reinforcing member 540 is in contact with the outer surface of the connection portion J in the arrangement direction AD, and more specifically, the flange 502 of each ceiling panel 500 constituting the connection portion J. They are in contact with the surface opposite to the contact surface with each other. A plurality of through holes 540a (FIG. 6) formed in advance in the piece portion 540a of the connection portion reinforcing member 540 are respectively passed with fixing tools F such as screws, and the fixing tools F are connected to the connection portion J. It penetrates through each flange 502 which constitutes. In this way, the connection portion reinforcing member 540 is attached to each ceiling panel 500 at the connection portion J by fastening.
Since the connection portion reinforcing member 54 is attached to the connection portion J in parallel with the connection portion J, it is possible to mainly increase the strength of the connection portion J with respect to a downward load, and thus in the connection portion extending direction JD. It acts to suppress the bending of the ceiling 50 such that the connection portion J tends to have a downwardly convex curved shape (see FIG. 5A) in a parallel vertical plane.

さらに、本実施形態では、２つの交差補強部材５２０が、一対の天井パネル５００のそれぞれに取り付けられている。平面視において、各交差補強部材５２０は、接続部延在方向ＪＤに対して交差する方向に延在しているとともに、接続部Ｊと交差している。
より具体的に、本例では、図２及び図３に示すように、平面視において、各交差補強部材５２０は、接続部延在方向ＪＤに対して垂直な方向（すなわち、本例では天井パネル５００の配列方向ＡＤ）に、延在している。図３の破線の円Ｂで囲った部分を示す図４（ｂ）に示すように、各交差補強部材５２０は、互いに垂直な一対の平板状の片部５２０ａ、５２０ｂどうしが一体に構成されている。交差補強部材５２０の一方の片部５２０ａは、各天井パネル５００の横リブ５０４Ｗにおけるパネル長手方向ＬＤのいずれか一方側の面に当接している。そして、交差補強部材５２０の片部５２０ａに予め形成された複数の貫通孔５２０ａ（図６）には、それぞれ、ビス等の固定具Ｆが通されており、固定具Ｆは、横リブ５０４Ｗをも貫通している。このようにして、交差補強部材５２０が、一対の天井パネル５００のそれぞれに、締結により取り付けられている。
ただし、交差補強部材５２０は、平面視において、接続部延在方向ＪＤに対して鋭角のなす角度をもって傾斜した方向に延在してもよい。平面視において、交差補強部材５２０と接続部延在方向ＪＤとの（９０°以下のほうの）なす角度は、８０°〜９０°であると、好適である。
なお、本例では、天井パネル５００が樹脂製であるため、締結にあたって、天井パネル５００には予め、固定具Ｆを通すための貫通孔が形成されていなくとも、固定具Ｆをフランジ５０２やリブ５０４に貫通させることが可能である。
交差補強部材５２０は、平面視において接続部Ｊに交差する方向に延びるとともに接続部Ｊと交差しているので、主に、接続部延在方向ＪＤに直交する鉛直平面内（ひいては、本例では配列方向ＡＤに平行な鉛直平面内）で接続部Ｊに向かうにつれて下側に下がる屈曲形状（図５（ｂ）参照。）になろうとするような、天井５０の撓みを、抑制するように作用する。 Furthermore, in this embodiment, two cross reinforcing members 520 are attached to each of the pair of ceiling panels 500. In a plan view, each cross reinforcing member 520 extends in a direction crossing the connection portion extension direction JD and crosses the connection portion J.
More specifically, in this example, as shown in FIGS. 2 and 3, each cross reinforcing member 520 has a direction perpendicular to the connecting portion extending direction JD in plan view (that is, a ceiling panel in this example). 500 in the arrangement direction AD). As shown in FIG. 4 (b), which shows a portion surrounded by a broken-line circle B in FIG. 3, each cross reinforcing member 520 is formed by integrally forming a pair of flat plate-like pieces 520a and 520b perpendicular to each other. Yes. One piece 520a of the cross reinforcing member 520 is in contact with one surface of the horizontal rib 504W of each ceiling panel 500 in the panel longitudinal direction LD. A plurality of through holes 520a (FIG. 6) formed in advance in the piece 520a of the cross reinforcing member 520 are respectively passed through fixing tools F such as screws, and the fixing tools F pass the lateral ribs 504W. Also penetrates. In this way, the cross reinforcing member 520 is attached to each of the pair of ceiling panels 500 by fastening.
However, the cross reinforcing member 520 may extend in a direction inclined with an acute angle with respect to the connecting portion extending direction JD in plan view. In a plan view, it is preferable that the angle formed by the cross reinforcing member 520 and the connecting portion extending direction JD (which is 90 ° or less) is 80 ° to 90 °.
In this example, since the ceiling panel 500 is made of a resin, the fastening panel F can be connected to the flange 502 or the rib even when the ceiling panel 500 is not formed with a through-hole for passing the fixing tool F in advance. 504 can be penetrated.
Since the cross reinforcing member 520 extends in a direction crossing the connection portion J in a plan view and crosses the connection portion J, the cross reinforcement member 520 is mainly in a vertical plane orthogonal to the connection portion extension direction JD (and in this example, It acts to suppress the bending of the ceiling 50 that tends to be bent downward (see FIG. 5B) toward the connection portion J in a vertical plane parallel to the arrangement direction AD. To do.

本実施形態では、接続部補強部材５４０及び交差補強部材５２０によって、天井５０全体の下向きの荷重に対する剛性を高めることができる。これにより、例えば、ユニットバス１を組み立てる際の組み立て手順の自由度を向上でき、ひいては、ユニットバスの施工性を向上できる。
以下、このことについてさらに詳しく説明する。
ユニットバス１を組み立てる際には、まず、４隅に支柱４０の下端を防水パン２１等に固定することにより、支柱４０を立設させ、その後、壁パネル３０及び天井パネル５００を支柱４０に組み付ける。ここで、壁パネル３０の組み付け前に天井パネル５００の組み付けを行うことができれば、その後の壁パネル３０の組み付けの際に、支柱４０の上端が天井５０によって固定されて、支柱４０のぐらつきが抑制されるので、望ましい。
しかし、仮に、例えば特許文献１のように、一対の天井パネル５００が、交差補強部材５２０によって補強されておらず、接続部補強部材５４０のみによって補強されている場合、壁パネル３０の組み付け前に天井５０を支柱４０の上端に組み付けようとすると、天井５０は、接続部補強部材５４０によって、接続部延在方向ＪＤに平行な鉛直平面内で接続部Ｊが下側に凸の湾曲形状になろうとするような撓み（図５（ａ）参照。）が抑制されるものの、接続部延在方向ＪＤに直交する鉛直平面内（ひいては、本例では配列方向ＡＤに平行な鉛直平面内）で接続部Ｊに向かうにつれて下側に下がるような屈曲形状（図５（ｂ）参照。）に撓もうとする。そのため、壁パネル３０が支柱４０間に組み付けられていない状態で天井５０を支柱４０の上端に組み付けるのが困難となる。したがって、この場合、支柱４０を設置後に、さきに壁パネル３０を支柱４０間に組み付け、その後に天井５０を組み付ける、という手順を取る必要がある。これにより、天井５０を組みつける際に、天井５０の外周縁が壁パネル３０によって支えられるので、天井５０の垂れ下がりを抑制でき、比較的安定的に天井５０を組みつけることが可能となる。しかし、その場合、壁パネル３０を支柱４０間に組み付ける際に、上端が固定されていない状態にある支柱４０がぐらついたり倒れたりしやすいため、壁パネル３０を支柱４０間に組み付ける作業がしづらくなる。 In the present embodiment, the connection portion reinforcing member 540 and the cross reinforcing member 520 can increase the rigidity against the downward load of the entire ceiling 50. Thereby, the freedom degree of the assembly procedure at the time of assembling the unit bus 1 can be improved, for example, and the construction property of a unit bus can be improved by extension.
This will be described in more detail below.
When the unit bath 1 is assembled, first, the column 40 is erected by fixing the lower end of the column 40 to the waterproof pan 21 or the like at the four corners, and then the wall panel 30 and the ceiling panel 500 are assembled to the column 40. . Here, if the ceiling panel 500 can be assembled before the wall panel 30 is assembled, the upper end of the column 40 is fixed by the ceiling 50 during the subsequent assembly of the wall panel 30, and the wobbling of the column 40 is suppressed. So it is desirable.
However, if the pair of ceiling panels 500 are not reinforced by the cross reinforcing member 520 and are reinforced only by the connecting portion reinforcing member 540 as in Patent Document 1, for example, before the wall panel 30 is assembled. When the ceiling 50 is to be assembled to the upper end of the support column 40, the ceiling 50 is bent into a curved shape with the connecting portion J protruding downward in a vertical plane parallel to the connecting portion extending direction JD by the connecting portion reinforcing member 540. Although the bending (see FIG. 5A) is suppressed, the connection is made in a vertical plane perpendicular to the connecting portion extending direction JD (and in this example, in a vertical plane parallel to the arrangement direction AD). It tends to bend into a bent shape (see FIG. 5B) that goes down as it goes to the part J. Therefore, it is difficult to assemble the ceiling 50 to the upper end of the column 40 in a state where the wall panel 30 is not assembled between the columns 40. Therefore, in this case, it is necessary to take a procedure in which the wall panel 30 is assembled between the columns 40 after the columns 40 are installed, and then the ceiling 50 is assembled. Thereby, when the ceiling 50 is assembled, the outer peripheral edge of the ceiling 50 is supported by the wall panel 30, so that the hanging of the ceiling 50 can be suppressed and the ceiling 50 can be assembled relatively stably. However, in this case, when the wall panel 30 is assembled between the columns 40, the column 40 in a state where the upper end is not fixed is likely to wobble or fall down, so that it is difficult to assemble the wall panel 30 between the columns 40. Become.

そこで、本実施形態では、接続部補強部材５４０に加えて、交差補強部材５２０によって、一対の天井パネル５００を補強することにより、天井５０が、接続部延在方向ＪＤに直交する鉛直平面内（ひいては、本例では配列方向ＡＤに平行な鉛直平面内）で接続部Ｊに向かうにつれて下側に下がる屈曲形状（図５（ｂ）参照。）になろうとするような撓みも、抑制できる。
これによって、次の手順でユニットバス１を組み立てることができるようになる。
すなわち、まず、４隅に支柱４０の下端を防水パン２１等に固定することにより、支柱４０を立設させる。
また、図６に示すように、天井５０を組み立てる。その際、まず、一対の天井パネル５００の端縁５０１どうしを突き合わせ、その接続部Ｊに、接続部補強部材５４０を当接させて、これらを固定具Ｆにより固定する。これにより、接続部補強部材５４０が接続部Ｊに取り付けられるとともに、互いに突き合わされた天井パネル５００の端縁５０１どうしが接続される。つぎに、交差補強部材５２０を、固定具Ｆにより、各天井パネル５００の横リブ５０４Ｗに取り付ける。さらに、本例では、天井５０の外周縁の４隅のコーナー部に、天井５０と支柱４０とを連結するためのコーナー連結具５５０を、固定具Ｆにより取り付ける。コーナー連結具５５０が天井５０に取り付けられた状態において、コーナー連結具５５０の一部分は、天井５０の下端よりも下側に突出している。
その後、図７に示すように、組み立てが完了した天井５０を、支柱４０の上端に組み付ける。その際、天井５０の４隅に設けられたコーナー連結具５５０の、天井５０よりも下側に突出した部分が、それぞれ対応する支柱４０に、上側から嵌め込まれる。このとき、コーナー連結具５５０の下側部分の貫通孔５５０ａと支柱４０の上端部の貫通孔４０ａとが連通し、そこで、固定具Ｆにより、コーナー連結具５５０が支柱４０と固定される。ここで、本実施形態では、接続部補強部材５４０及び交差補強部材５２０によって天井５０が垂れ下がりにくくされているので、天井５０を支柱４０の上端に組み付ける作業を、安定的に行うことが可能となる。
その後、図８に示すように、壁パネル３０やドア３１を、支柱４０間に組み付ける。このとき、支柱４０の上端は天井５０によってぐらつきが抑制されているため、壁パネル３０の組み付け作業を安定的に行うことができる。 Therefore, in this embodiment, the ceiling 50 is reinforced in the vertical plane orthogonal to the connecting portion extending direction JD by reinforcing the pair of ceiling panels 500 by the cross reinforcing member 520 in addition to the connecting portion reinforcing member 540 ( Eventually, in this example, it is also possible to suppress bending that tends to bend downward (see FIG. 5B) toward the connection portion J in a vertical plane parallel to the arrangement direction AD.
As a result, the unit bus 1 can be assembled in the following procedure.
That is, first, the column 40 is erected by fixing the lower end of the column 40 to the waterproof pan 21 or the like at the four corners.
Moreover, as shown in FIG. 6, the ceiling 50 is assembled. At that time, first, the end edges 501 of the pair of ceiling panels 500 are brought into contact with each other, the connection portion reinforcing member 540 is brought into contact with the connection portion J, and these are fixed by the fixture F. As a result, the connection portion reinforcing member 540 is attached to the connection portion J, and the edges 501 of the ceiling panel 500 that are abutted with each other are connected to each other. Next, the cross reinforcing member 520 is attached to the horizontal rib 504W of each ceiling panel 500 by the fixture F. Furthermore, in this example, the corner connector 550 for connecting the ceiling 50 and the support column 40 is attached to the four corners of the outer peripheral edge of the ceiling 50 by the fixing tool F. In a state where the corner connector 550 is attached to the ceiling 50, a part of the corner connector 550 protrudes below the lower end of the ceiling 50.
Thereafter, as shown in FIG. 7, the assembled ceiling 50 is assembled to the upper end of the column 40. At that time, the portions of the corner coupler 550 provided at the four corners of the ceiling 50 that protrude downward from the ceiling 50 are fitted into the corresponding columns 40 from above. At this time, the through hole 550a in the lower portion of the corner connector 550 communicates with the through hole 40a at the upper end portion of the support column 40, and the corner connector 550 is fixed to the support column 40 by the fixing device F. Here, in the present embodiment, since the ceiling 50 is difficult to hang down by the connection portion reinforcing member 540 and the cross reinforcing member 520, it is possible to stably perform the work of assembling the ceiling 50 to the upper end of the support column 40. .
Thereafter, as shown in FIG. 8, the wall panel 30 and the door 31 are assembled between the columns 40. At this time, since the wobble of the upper end of the support column 40 is suppressed by the ceiling 50, the assembly work of the wall panel 30 can be performed stably.

以上のように、本実施形態によれば、接続部補強部材５４０に加えて交差補強部材５２０によって天井５０が補強されているので、天井５０全体の下向きの荷重に対する剛性を高めることができ、ひいては、天井５０の垂れ下がりを効果的に抑制することができる。このため、ユニットバス１の施工時において、壁パネル３０を組み付ける前に天井５０を支柱４０の上端に組み付けることが可能となるので、その後の壁パネル３０の組み付け作業を安定的に行うことができる。よって、ユニットバス１の施工性を向上できる。
また、本実施形態によれば、ユニットバス１の施工後も、天井５０が、天井５０の自重や、天井５０に取り付けられる換気扇や照明器具等の荷重によって、垂れ下がるのを、より効果的に抑制できる。 As described above, according to the present embodiment, since the ceiling 50 is reinforced by the cross reinforcing member 520 in addition to the connection portion reinforcing member 540, the rigidity against the downward load of the entire ceiling 50 can be increased, and consequently The drooping of the ceiling 50 can be effectively suppressed. For this reason, since it becomes possible to assemble the ceiling 50 to the upper end of the support column 40 before assembling the wall panel 30 during construction of the unit bath 1, the subsequent assembling work of the wall panel 30 can be performed stably. . Therefore, the workability of the unit bus 1 can be improved.
Moreover, according to this embodiment, even after the construction of the unit bath 1, the ceiling 50 is more effectively suppressed from sagging due to the weight of the ceiling 50 or a load from a ventilation fan or a lighting fixture attached to the ceiling 50. it can.

なお、図９の変形例のように、平面視において、一対の天井パネル５００が、接続部補強部材５４０によって補強されず、１つ又は複数の（好ましくは複数の）交差補強部材５２０のみによって補強されてもよい。
図９の例では、４つの交差補強部材５２０によって、一対の天井パネル５００が補強されている。
この構成によっても、天井５０が接続部延在方向ＪＤに直交する鉛直平面内（ひいては、本例では配列方向ＡＤに平行な鉛直平面内）で接続部Ｊに向かうにつれて下側に向かうような屈曲形状（図５（ｂ）参照。）に撓むのを効果的に抑制でき、また、天井５０が接続部延在方向ＪＤに平行な鉛直平面内で下側に凸の湾曲形状（図５（ａ）参照。）に撓むのを効果的に抑制できる。よって、天井５０全体の剛性を向上できる。 9, the pair of ceiling panels 500 are not reinforced by the connection portion reinforcing member 540 in a plan view, and are reinforced only by one or a plurality of (preferably a plurality of) cross reinforcing members 520. May be.
In the example of FIG. 9, the pair of ceiling panels 500 is reinforced by four cross reinforcing members 520.
Also with this configuration, the ceiling 50 is bent so as to go downward as it goes to the connecting portion J in a vertical plane perpendicular to the connecting portion extending direction JD (and in the vertical plane parallel to the arrangement direction AD in this example). It is possible to effectively suppress bending into a shape (see FIG. 5B), and the ceiling 50 has a curved shape that protrudes downward in a vertical plane parallel to the connecting portion extending direction JD (FIG. 5 ( It can suppress effectively bending to a) reference). Therefore, the rigidity of the entire ceiling 50 can be improved.

なお、図２及び図９の例のように、平面視において、一対の天井パネル５００に設けられた１つ又は複数の交差補強部材５２０のうち、少なくとも１つ（好ましくは全部）の交差補強部材５２０の両端部５２１は、一対の天井パネル５００の配列方向ＡＤにおける一対の天井パネル５００のそれぞれの中心Ｃよりも、パネル配列方向ＡＤの外側に位置していると、好適である。この構成によれば、比較的垂れ下がりやすい、各パネル５００のそれぞれの中央部や、天井５０全体を観たときの天井５０の中央部に、交差補強部材５２０を配置できるので、天井５０全体の剛性をさらに向上できる。
なお、図２及び図９の例において、各交差補強部材５２０の両端部５２１は、平面視において、天井５０の外周縁よりも内側（内周側）に位置している。 2 and FIG. 9, at least one (preferably all) cross-reinforcing members among one or a plurality of cross-reinforcing members 520 provided on the pair of ceiling panels 500 in plan view. It is preferable that both end portions 521 of 520 are located outside the center arrangement C of the pair of ceiling panels 500 in the arrangement direction AD of the pair of ceiling panels 500 in the panel arrangement direction AD. According to this configuration, the cross reinforcing member 520 can be disposed at the center of each panel 500 or the center of the ceiling 50 when the entire ceiling 50 is viewed, which is relatively easy to sag. Can be further improved.
2 and 9, both end portions 521 of each cross reinforcing member 520 are located on the inner side (inner peripheral side) than the outer peripheral edge of the ceiling 50 in a plan view.

また、図２及び図９の例のように、平面視において、一対の天井パネル５００に設けられた１つ又は複数の交差補強部材５２０のうち、少なくとも１つ（好ましくは全部）の交差補強部材５２０は、接続部Ｊの両端部Ｊｅよりも接続部延在方向ＪＤの内側で、該接続部Ｊと交差していると、好適である。言い換えれば、交差補強部材５２０は、平面視において、接続部Ｊの両端部Ｊｅで、接続部Ｊと交差していないと、好適である。この構成によれば、天井５０が接続部延在方向ＪＤに直交する鉛直平面内（ひいては、本例では配列方向ＡＤに平行な鉛直平面内）で接続部Ｊに向かうにつれて下側に向かうような屈曲形状（図５（ｂ）参照。）に撓むのをさらに効果的に抑制でき、また、天井５０が接続部延在方向ＪＤに平行な鉛直平面内で下側に凸の湾曲形状（図５（ａ）参照。）に撓むのをさらに効果的に抑制できる。よって、天井５０全体の剛性をさらに向上できる。   2 and 9, at least one (preferably all) cross-reinforcing members among one or a plurality of cross-reinforcing members 520 provided in the pair of ceiling panels 500 in plan view. It is preferable that 520 crosses the connecting portion J inside the connecting portion extending direction JD rather than both end portions Je of the connecting portion J. In other words, it is preferable that the cross reinforcing member 520 is not crossing the connection portion J at both end portions Je of the connection portion J in plan view. According to this configuration, the ceiling 50 moves downward as it goes to the connection portion J in a vertical plane orthogonal to the connection portion extending direction JD (and in this example, in a vertical plane parallel to the arrangement direction AD in this example). The bent shape (see FIG. 5B) can be further effectively suppressed, and the ceiling 50 has a curved shape that protrudes downward in a vertical plane parallel to the connecting portion extending direction JD (see FIG. 5). 5 (a) can be more effectively suppressed. Therefore, the rigidity of the entire ceiling 50 can be further improved.

また、図２及び図９の例のように、平面視において、一対の天井パネル５００は、それぞれ、天井パネル５００の外周縁よりも内側にリブ５０４を有しており、また、一対の天井パネル５００に設けられた１つ又は複数の交差補強部材５２０のうち、少なくとも１つ（好ましくは全部）の交差補強部材５２０は、一対の天井パネル５００のそれぞれのリブ５０４（具体的には横リブ５０４Ｗ）に取り付けられていると、好適である。これによれば、交差補強部材５２０を天井パネル５００の外周縁よりも内側に取り付ける際の取り付け作業が簡単となる。よって、天井の施工性を向上できる。
なお、天井パネル５００の外周縁よりも内側にリブ５０４が無くてもよく、その場合、交差補強部材５２０を接着等によって、天井パネル５００の外周縁よりも内側に取り付けてもよい。 Further, as in the examples of FIGS. 2 and 9, the pair of ceiling panels 500 have ribs 504 on the inner side of the outer peripheral edge of the ceiling panel 500 in plan view, and the pair of ceiling panels At least one (preferably all) cross reinforcing members 520 among one or a plurality of cross reinforcing members 520 provided in 500 are the ribs 504 (specifically, horizontal ribs 504W) of the pair of ceiling panels 500. ) Is suitable. According to this, the attachment operation | work at the time of attaching the cross reinforcement member 520 inside the outer periphery of the ceiling panel 500 becomes easy. Therefore, the workability of the ceiling can be improved.
The ribs 504 may not be provided on the inner side of the outer peripheral edge of the ceiling panel 500. In that case, the cross reinforcing member 520 may be attached on the inner side of the outer peripheral edge of the ceiling panel 500 by bonding or the like.

また、平面視において、一対の天井パネル５００に設けられた１つ又は複数の交差補強部材５２０のうち、少なくとも１つの交差補強部材５２０は、天井パネル５００の外周縁上に取り付けられてもよい。その場合、交差補強部材５２０は、例えば、各天井パネル５００のフランジ５０２に取り付けるとよい。   Moreover, at least one cross reinforcing member 520 of one or more cross reinforcing members 520 provided on the pair of ceiling panels 500 may be attached on the outer peripheral edge of the ceiling panel 500 in a plan view. In that case, the cross reinforcing member 520 may be attached to the flange 502 of each ceiling panel 500, for example.

図２及び図９の例のように、平面視において、複数の交差補強部材５２０が、それぞれ、接続部Ｊの両端部Ｊｅよりも接続部延在方向ＪＤの内側で、接続部Ｊと交差し、また、これらの交差補強部材５２０は、それぞれ、一対の天井パネル５００の配列方向ＡＤに、平行であると、好適である。この構成によれば、天井５０が接続部延在方向ＪＤに直交する鉛直平面内（ひいては、本例では配列方向ＡＤに平行な鉛直平面内）で接続部Ｊに向かうにつれて下側に向かうような屈曲形状（図５（ｂ）参照。）に撓むのをさらに効果的に抑制でき、また、天井５０が接続部延在方向ＪＤに平行な鉛直平面内で下側に凸の湾曲形状（図５（ａ）参照。）に撓むのをさらに効果的に抑制できる。よって、天井５０全体の剛性をさらに向上できる。   As in the example of FIGS. 2 and 9, the plurality of cross reinforcing members 520 intersect the connection portion J inside the connection portion extending direction JD rather than both end portions Je of the connection portion J in plan view. Moreover, it is preferable that these cross reinforcing members 520 are parallel to the arrangement direction AD of the pair of ceiling panels 500, respectively. According to this configuration, the ceiling 50 moves downward as it goes to the connection portion J in a vertical plane orthogonal to the connection portion extending direction JD (and in this example, in a vertical plane parallel to the arrangement direction AD in this example). The bent shape (see FIG. 5B) can be further effectively suppressed, and the ceiling 50 has a curved shape that protrudes downward in a vertical plane parallel to the connecting portion extending direction JD (see FIG. 5). 5 (a) can be more effectively suppressed. Therefore, the rigidity of the entire ceiling 50 can be further improved.

図２の例のように、平面視において、一対の天井パネル５００に設けられた１つ又は複数の交差補強部材５２０のうち、少なくとも１つ（好ましくは全部）の交差補強部材５２０と、接続部補強部材５４０とは、互いに交差していないと、好適である。この構成によれば、天井５０全体の中で部分的に剛性の高い箇所ができるのを回避できるため、天井５０全体の剛性のバランスを良好にできる。   As in the example of FIG. 2, at least one (preferably all) cross-reinforcing members 520 out of one or a plurality of cross-reinforcing members 520 provided on the pair of ceiling panels 500 in a plan view, and a connection portion It is preferable that the reinforcing members 540 do not cross each other. According to this configuration, it is possible to avoid the formation of a portion having high rigidity in the ceiling 50 as a whole, so that the rigidity of the ceiling 50 as a whole can be well balanced.

図２の例のように、平面視において、接続部Ｊの接続部延在方向ＪＤの中心Ｏに対する接続部延在方向ＪＤの両側で、一対の交差補強部材５２０が、それぞれ接続部Ｊと交差しており、平面視において、接続部補強部材５４０は、一対の交差補強部材５２０どうしの間に位置していると、好適である。この構成によれば、天井５０の接続部延在方向ＪＤの中央側では、接続部補強部材５４０によって、天井５０が撓むのを効果的に抑制し、また、天井５０の接続部延在方向ＪＤの両端側では、接続部延在方向ＪＤの両側の一対の交差補強部材５２０によって、天井５０が撓むのを効果的に抑制することで、天井５０全体の剛性のバランスを良好にできる。   As in the example of FIG. 2, the pair of cross reinforcing members 520 intersect with the connection part J on both sides of the connection part extension direction JD with respect to the center O of the connection part extension direction JD of the connection part J in plan view. In plan view, it is preferable that the connection portion reinforcing member 540 is located between the pair of cross reinforcing members 520. According to this configuration, at the center side of the connecting portion extending direction JD of the ceiling 50, the connecting portion reinforcing member 540 effectively suppresses the bending of the ceiling 50, and the connecting portion extending direction of the ceiling 50 At both ends of JD, the pair of cross reinforcing members 520 on both sides in the connecting portion extending direction JD can effectively suppress the bending of the ceiling 50, so that the rigidity of the ceiling 50 as a whole can be well balanced.

図２の例のように、平面視において、一対の天井パネル５００に設けられた１つ又は複数の交差補強部材５２０のうち、少なくとも１つ（好ましくは全部）の交差補強部材５２０は、接続部Ｊの両端部Ｊｅのうち該交差補強部材５２０に隣接するほうの端部Ｊｅよりも、接続部補強部材５４０の両端部５４１のうち該交差補強部材５２０に隣接するほうの端部５４１に近い位置で、接続部Ｊと交差していると、好適である。天井５０の中央（内周側）には、通常、換気扇や照明器具等が取り付けられるため、垂れ下がりやすいが、天井５０の外周側は、壁パネル３０によって支持されるため、さほど垂れ下がりは生じない。よって、交差補強部材５２０をなるべく天井５０の中央に寄せて配置することで、天井５０全体の剛性のバランスを良好にできる。   As in the example of FIG. 2, at least one (preferably all) cross-reinforcing members 520 of one or a plurality of cross-reinforcing members 520 provided on the pair of ceiling panels 500 in the plan view are connected portions. A position closer to the end portion 541 adjacent to the cross reinforcing member 520 in the both end portions 541 of the connection portion reinforcing member 540 than to the end portion Je adjacent to the cross reinforcing member 520 in the both end portions Je of J Thus, it is preferable to cross the connection portion J. Since a ventilation fan, a lighting fixture, or the like is usually attached to the center (inner peripheral side) of the ceiling 50, the ceiling 50 is likely to hang down. Therefore, by arranging the cross reinforcing member 520 as close to the center of the ceiling 50 as possible, the rigidity balance of the entire ceiling 50 can be improved.

なお、上述した例では、天井５０が２つの天井パネル５００から構成されているが、天井５０は３つ以上の天井パネル５００から構成されてもよい。その場合、接続部補強部材５４０や交差補強部材５２０は、３つ以上の天井パネル５０に連続して取り付けられてもよい。ただし、その場合も、天井５０を構成する各天井パネル５０のうち、少なくとも互いに隣接する一対の天井パネル５０を観たときに、天井パネルの補強構造が、上述した構成となっていればよい。   In the example described above, the ceiling 50 is composed of two ceiling panels 500, but the ceiling 50 may be composed of three or more ceiling panels 500. In that case, the connecting portion reinforcing member 540 and the cross reinforcing member 520 may be continuously attached to three or more ceiling panels 50. However, also in that case, when the pair of ceiling panels 50 adjacent to each other among the ceiling panels 50 constituting the ceiling 50 is viewed, the reinforcing structure of the ceiling panel only needs to have the above-described configuration.

本発明による天井パネルの補強構造は、例えば、ユニットバス等のユニットルームの天井に利用できる。   The ceiling panel reinforcing structure according to the present invention can be used for a ceiling of a unit room such as a unit bath, for example.

１：ユニットバス（ユニットルーム）、 １０：浴槽、 ２０：洗い場、 ２１：防水パン、 ３０：壁パネル、 ３１：ドア、 ４０：支柱、 ５０：天井、 ５００：天井パネル、 ５０１：端縁、 ５０２：フランジ、 ５０３：ベース板、 ５０３ａ、５０３ｂ：貫通孔、 ５０４、５０４Ｌ、５０４Ｗ：リブ、 ５２０：交差補強部材、 ５２０ａ、５２０ｂ：片部、 ５２１：交差補強部材の端部、 ５４０：接続部補強部材、 ５４０ａ、５４０ｂ：片部、 ５４１：接続部補強部材の端部、 ５５０：コーナー連結具、 ＡＤ：配列方向、 Ｆ：固定具、 Ｊ：接続部、 ＪＤ：接続部延在方向、 ＬＤ：パネル長手方向、 ＷＤ：パネル幅方向   1: Unit bath (unit room), 10: bathtub, 20: washing place, 21: waterproof pan, 30: wall panel, 31: door, 40: support, 50: ceiling, 500: ceiling panel, 501: edge, 502 : Flange, 503: base plate, 503a, 503b: through-hole, 504, 504L, 504W: rib, 520: cross reinforcing member, 520a, 520b: one part, 521: end of cross reinforcing member, 540: connection portion reinforcing Member, 540a, 540b: one part, 541: end of connecting portion reinforcing member, 550: corner connecting tool, AD: arrangement direction, F: fixing tool, J: connecting portion, JD: connecting portion extending direction, LD: Panel longitudinal direction, WD: Panel width direction

Claims (10)

互いに隣接する一対の天井パネルのそれぞれに取り付けられた、交差補強部材を備え、
平面視において、前記交差補強部材は、前記一対の天井パネルの端縁どうしが突き合わされて接続された接続部に平行な接続部延在方向に対して交差する方向に延在しているとともに、該接続部と交差している、天井パネルの補強構造。 A cross reinforcing member attached to each of a pair of ceiling panels adjacent to each other,
In plan view, the cross reinforcing member extends in a direction intersecting with a connecting portion extending direction parallel to a connecting portion where end edges of the pair of ceiling panels are abutted and connected, and A reinforcing structure for a ceiling panel that intersects the connecting portion. 平面視において、前記交差補強部材の両端部は、前記一対の天井パネルの配列方向における前記一対の天井パネルのそれぞれの中心よりも、前記配列方向の外側に位置する、請求項１に記載の天井パネルの補強構造。   2. The ceiling according to claim 1, wherein, in a plan view, both end portions of the cross reinforcing member are located on the outer side in the arrangement direction than the respective centers of the pair of ceiling panels in the arrangement direction of the pair of ceiling panels. Panel reinforcement structure. 平面視において、前記交差補強部材は、前記接続部の両端部よりも前記接続部延在方向の内側で、該接続部と交差している、請求項１又は２に記載の天井パネルの補強構造。   3. The ceiling panel reinforcing structure according to claim 1, wherein, in a plan view, the cross reinforcing member crosses the connection portion on the inner side in the connection portion extending direction than both end portions of the connection portion. . 平面視において、前記一対の天井パネルは、それぞれ、前記天井パネルの外周縁よりも内側にリブを有しており、
前記交差補強部材は、前記一対の天井パネルのそれぞれの前記リブに取り付けられている、請求項１〜３のいずれか一項に記載の天井パネルの補強構造。 In the plan view, each of the pair of ceiling panels has a rib inside the outer peripheral edge of the ceiling panel,
The said cross reinforcement member is a reinforcement structure of the ceiling panel as described in any one of Claims 1-3 attached to each said rib of a pair of said ceiling panel. 平面視において、複数の前記交差補強部材が、それぞれ、前記接続部の両端部よりも前記接続部延在方向の内側で、該接続部と交差しており、
前記複数の交差補強部材は、それぞれ、前記一対の天井パネルの配列方向に、平行である、請求項１〜４のいずれか一項に記載の天井パネルの補強構造。 In plan view, each of the plurality of cross reinforcing members intersects the connection portion on the inner side of the connection portion extending direction from both ends of the connection portion,
5. The ceiling panel reinforcing structure according to claim 1, wherein each of the plurality of cross reinforcing members is parallel to an arrangement direction of the pair of ceiling panels. 前記接続部延在方向に延在するとともに該接続部に取り付けられた、接続部補強部材を、さらに備えた、請求項１〜５のいずれか一項に記載の天井パネルの補強構造。   The reinforcing structure for a ceiling panel according to any one of claims 1 to 5, further comprising a connecting portion reinforcing member that extends in the connecting portion extending direction and is attached to the connecting portion. 平面視において、前記交差補強部材と前記接続部補強部材とは、互いに交差していない、請求項６に記載の天井パネルの補強構造。   The reinforcing structure for a ceiling panel according to claim 6, wherein the cross reinforcing member and the connection portion reinforcing member do not cross each other in a plan view. 平面視において、前記接続部の前記接続部延在方向の中心に対する前記接続部延在方向の両側で、一対の前記交差補強部材が、それぞれ前記接続部と交差しており、
平面視において、前記接続部補強部材は、前記一対の交差補強部材どうしの間に位置している、請求項６又は７に記載の天井パネルの補強構造。 In plan view, on both sides of the connecting portion extending direction with respect to the center of the connecting portion extending direction of the connecting portion, a pair of cross reinforcing members respectively intersect the connecting portion,
8. The ceiling panel reinforcing structure according to claim 6, wherein the connection portion reinforcing member is positioned between the pair of cross reinforcing members in a plan view. 平面視において、前記交差補強部材は、前記接続部の両端部のうち該交差補強部材に隣接するほうの端部よりも、前記接続部補強部材の両端部のうち該交差補強部材に隣接するほうの端部に近い位置で、前記接続部と交差している、請求項６〜８のいずれか一項に記載の天井パネルの補強構造。   In plan view, the cross reinforcing member is adjacent to the cross reinforcing member at both ends of the connecting portion reinforcing member rather than the end portion adjacent to the cross reinforcing member at both ends of the connecting portion. The reinforcement structure of the ceiling panel as described in any one of Claims 6-8 which cross | intersects the said connection part in the position close | similar to the edge part. 互いに接続された複数の天井パネルと、
前記複数の天井パネルのうち、少なくとも互いに隣接する一対の天井パネルに取り付けられた、請求項１〜９のいずれか一項に記載の天井パネルの補強構造と、
を備えた、天井。 A plurality of ceiling panels connected to each other;
The reinforcing structure of the ceiling panel according to any one of claims 1 to 9, which is attached to at least a pair of ceiling panels adjacent to each other among the plurality of ceiling panels,
With a ceiling.
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Publication number Priority date Publication date Assignee Title
WO2019017254A1 (en) 2017-07-20 2019-01-24 三菱ケミカル株式会社 Sheet molding compound, fiber-reinforced composite material, and method for producing fiber-reinforced composite material

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019017254A1 (en) 2017-07-20 2019-01-24 三菱ケミカル株式会社 Sheet molding compound, fiber-reinforced composite material, and method for producing fiber-reinforced composite material

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