JP6837798B2

JP6837798B2 - Reinforcement structure of ceiling panel and ceiling

Info

Publication number: JP6837798B2
Application number: JP2016197452A
Authority: JP
Inventors: 英喜蒲澤
Original assignee: ブレクスプロダクツ株式会社
Priority date: 2016-10-05
Filing date: 2016-10-05
Publication date: 2021-03-03
Anticipated expiration: 2036-10-05
Also published as: JP2018059324A

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 the 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 (connecting member) extending along the connecting portion is attached to a connecting portion in which the edge edges of adjacent ceiling panels are abutted and connected to each other. (For example, Patent Document 1).

特開平8-302889号公報Japanese Unexamined Patent Publication No. 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 connecting portion between the ceiling panels is not sufficient, and the hanging of the ceiling due to the weight of the ceiling or the like cannot be sufficiently suppressed. Therefore, for example, when the above ceiling is used as the ceiling of a unit room such as a unit bath, there is a problem that the workability of the unit room cannot be improved because the assembly procedure when assembling the unit room is restricted. 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。 The present invention is for solving the above-mentioned problems, and an object of the present invention is to provide a reinforced structure for a ceiling panel and a ceiling capable of improving the rigidity of the ceiling with respect to 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。 The ceiling panel reinforcement structure of the present invention includes cross-reinforcing members attached to each of a pair of ceiling panels adjacent to each other, and in a plan view, the cross-reinforcing members have edges of the pair of ceiling panels. It extends in a direction that intersects the extending direction of the connecting portion parallel to the connecting portion that is abutted and connected, and intersects the connecting portion.
According to the reinforcing structure of the ceiling panel of the present invention, the rigidity of the ceiling with respect to 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 reinforcement structure of the present invention, in a plan view, both ends of the cross reinforcing member are outside the center of each of the pair of ceiling panels in the arrangement direction of the pair of ceiling panels. Positioned is suitable.
According to this configuration, 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 of the ceiling panel of the present invention, it is preferable that the cross reinforcing member intersects the connecting portion inside the connecting portion extending direction from both ends of the connecting portion in a plan view. is there.
According to this configuration, 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 reinforcement structure of the present invention, in a plan view, each of the pair of ceiling panels has ribs inside the outer peripheral edge of the ceiling panel, and the cross reinforcement member is the pair of ceilings. It is preferable that it is attached to each of the ribs 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 reinforcing structure of the ceiling panel of the present invention, in a plan view, the plurality of cross-reinforcing members intersect with the connecting portion on the inside of both ends of the connecting portion in the extending direction of the connecting portion. It is preferable that the plurality of cross-reinforcing members are parallel to each other in the arrangement direction of the pair of ceiling panels.
According to this configuration, 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、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 ceiling panel reinforcing structure of the present invention, it is preferable that the connecting portion reinforcing member extending in the connecting portion extending direction and attached to the connecting portion is further provided.
According to this configuration, 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 intersect with each other in a plan view.
According to this configuration, the rigidity of the entire ceiling can be well balanced.

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 of the ceiling panel of the present invention, in a plan view, a pair of the cross reinforcing members are respectively connected to the connecting portion on both sides of the connecting portion extending direction with respect to the center of the connecting portion extending direction. It is preferable that the connecting portion reinforcing member is located between the pair of crossing reinforcing members because they intersect each other and in a plan view.
According to this configuration, 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 reinforcement structure of the ceiling panel of the present invention, in a plan view, the cross-reinforcing member is a both ends of the connecting portion reinforcing member rather than the end of the connecting portion adjacent to the cross-reinforcing member. Of these, it is preferable that the connecting portion intersects with the connecting portion at a position closer to the end adjacent to the cross reinforcing member.
According to this configuration, the rigidity of the ceiling 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. It has a reinforced structure for ceiling panels.
According to the ceiling of the present invention, the rigidity of the ceiling with respect to 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 reinforced structure of a ceiling panel and a ceiling capable of improving the rigidity of the ceiling with respect to 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 which provided 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。FIG. 4A is a partial cross-sectional oblique view showing a part of the ceiling of FIG. 1 together with a cross section taken along the line AA of FIG. FIG. 4B is a partial cross-sectional oblique view showing a portion of the ceiling of FIG. 1 surrounded by a broken line circle B of FIG. 3 together with a notched 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。5 (a) and 5 (b) are views for explaining the direction in which the ceiling is to bend. 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 bath of FIG. 1, and is the figure which shows the state of assembling the ceiling. 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。It is a figure which shows the state of assembling the ceiling to a support column in the example of the assembling procedure of the unit bath of FIG. 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 the state of assembling the wall panel in the example of the assembling procedure of the unit 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, the reinforcing structure of the ceiling panel and the embodiment of the ceiling according to the present invention will be illustrated and 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。 1 to 8 are views for explaining a reinforcing structure of a ceiling panel and a ceiling according to an embodiment of the present invention.
FIG. 1 shows a unit bath 1 provided with a ceiling 50 having a reinforcing structure for the ceiling panel of the present embodiment. In this example, the unit bath 1 includes a bathtub 10, a washing place 20, a plurality of wall panels 30, a door (not shown), a plurality of ceiling panels 500 (two in this example), a wall panel 30, and the like. It is provided with a support column 40 that supports the ceiling panel 500. In this example, the unit bath 1 includes two ceiling panels 500, and these two ceiling panels 500 are connected by fastening to form the ceiling 50 of the present embodiment. Vertically extending columns 40 are installed at the four corners of the unit bath 1. A wall panel 30 and a door are arranged between the columns 40. A ceiling 50 is arranged at the upper end of the support column 40.
In the example of FIG. 1, the unit bath 1 is a so-called full-pan type unit bath in which the bathtub 10 and the washing place 20 are separate bodies, and the waterproof pan 21 constituting the washing place 20 is extended to the lower side of the bathtub 10. Is. However, the ceiling 50 of the present embodiment is suitably applied to any unit room such as a so-called half-pan type unit bath in which the bathtub 10 and the washing place 20 are integrally configured and the bathtub 10 does not have a waterproof pan underneath. 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 above the bathtub 10 and has a through hole 503a for attaching a ventilation fan or a lighting fixture, for example. ing. The other ceiling panel 500 is located above the washing area 20 and has a through hole 503b for, for example, 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 from above in a plan view, and FIG. 3 shows a state when the ceiling 50 of the present embodiment is viewed from diagonally above. In this example, the ceiling 50 includes a pair of ceiling panels 500 adjacent to each other and a reinforcing structure of the ceiling panels 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 formed of, for example, a resin such as Fiber-Reinforced Plastics (FRP). In this example, the ceiling panel 500 includes a base plate 503 that constitutes the lower surface of the ceiling panel 500, and a flange 502 that is vertically erected on the upper surface (back surface) of the base plate 503 along the outer peripheral edge of the base plate 503. It has a reinforcing rib 504 that is vertically erected on the upper surface (back surface) of the base plate 503 on the inner side (inner peripheral side) of the flange 502. 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 a plan view.
In the present specification, in the plan view of the ceiling panel 500, the extending direction of the rectangular long side formed by the ceiling panel 500 is referred to as "panel longitudinal direction LD", and the rectangular short length perpendicular to the longitudinal direction LD. The extending direction of the side is called "panel width direction WD".
The ribs 504 extend parallel to the panel longitudinal direction LD and are separated from each other in the panel width direction WD, and a plurality of vertical ribs 504L and each extend parallel to the panel width direction WD and the panel longitudinally from each other. It has a plurality of lateral ribs 504W spaced apart from each other in the direction LD. In this example, the vertical ribs 504L and the horizontal ribs 504W intersect vertically in a part 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。 The pair of ceiling panels 500 constituting the ceiling 50 have edge edges (end walls consisting of a flange 502 and a portion of the base plate 503 that is continuous to the lower side of the flange 502) 501 parallel to the LD in the longitudinal direction of each panel. They are connected to each other with each other butted against each other. The portion where the edge 501s of the ceiling panel 500 are butted against each other and connected to each other constitutes a connecting portion J. In this example, the connecting portion J extends parallel to the panel longitudinal direction LD. In the connecting portion J, the flanges 502 of the ceiling panels 500 on both sides are connected by fastening with a fixture F such as a screw in a state of being in contact with each other.
In the present specification, the direction parallel to the connection portion J is referred to as "connection portion extension direction JD". In this example, the connection extension direction JD is parallel to the panel longitudinal direction LD.
Further, the direction in which the pair of ceiling panels 500 are arranged (arranged) is referred to as "arrangement direction AD". The arrangement direction AD is the extending direction of a straight line passing through the geometric center points of the outer shapes (rectangles in this example) of the pair of ceiling panels 500 in a 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。 Generally, when the ceiling is arranged at the upper ends of the four walls, it is difficult to bend downward because it is supported by the wall on the outer peripheral edge side of the ceiling, but the inner peripheral side (central part) of the ceiling. Since there is nothing to support the ceiling, it tends to bend downward due to the weight of the ceiling and the load of the ventilation fan and lighting fixtures attached to the ceiling. In particular, when the ceiling is composed of a plurality of ceiling panels 500 whose ceilings are divided from each other as in the present embodiment, the ceiling at the connection portion J between the ceiling panels has a particularly weak strength against a downward load, so that the ceiling is one ceiling. It tends to hang down more easily than when it is composed only of panels.
The cross-reinforcing member 520 and the connecting portion reinforcing member 540 increase the rigidity of the pair of ceiling panels 500 with respect to the downward load of the connecting portion J, and thus increase the rigidity of the entire ceiling 50, so that the ceiling 50 bends downward. It suppresses the problem.

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。 It is preferable that the cross reinforcing member 520 and the connecting portion reinforcing member 540 are each made of a material harder than the material constituting the ceiling panel 500, and in this example, they are 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 in a straight line. More specifically, in this example, the cross-reinforcing member 520 and the connecting portion reinforcing member 540 are angles (angle steel) having an L-shaped cross section, and therefore, are very perpendicular to their extending directions. 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 connecting portion reinforcing member 540 is attached to the connecting portion J. In a plan view, the connecting portion reinforcing member 540 extends along the connecting portion J in the connecting portion extending direction JD.
More specifically, in this example, as shown in FIG. 2, FIG. 3, and FIG. 4A showing a cross section taken along the line AA of FIG. 3, the connecting portion reinforcing members 540 are a pair perpendicular to each other. The flat plate-shaped pieces 540a and 540b are integrally formed. One piece 540a of the connecting portion reinforcing member 540 is in contact with the outer surface of the arrangement direction AD of the connecting portion J, and more specifically, the flange 502 of each ceiling panel 500 constituting the connecting portion J. , It is in contact with the surface opposite to the contact surface with each other. Fixing tools F such as screws are passed through the plurality of through holes 540a (FIG. 6) previously formed in one portion 540a of the connecting portion reinforcing member 540, and the fixing tool F is the connecting portion J. It also penetrates each flange 502 constituting the above. In this way, the connecting portion reinforcing member 540 is attached to each ceiling panel 500 by fastening at the connecting portion J.
Since the connecting portion reinforcing member 54 is attached to the connecting portion J in parallel with the connecting portion J, it is possible to increase the strength of the connecting portion J mainly against a downward load, and by extension, in the connecting portion extending direction JD. It acts to suppress the bending of the ceiling 50, which causes the connecting portion J to have a curved shape (see FIG. 5A) that is convex downward in the 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。 Further, in the present 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 intersecting the connecting portion extending direction JD and intersects the connecting portion J.
More specifically, in this example, as shown in FIGS. 2 and 3, in a plan view, each cross-reinforcing member 520 is in a direction perpendicular to the connecting portion extending direction JD (that is, in this example, the ceiling panel). It extends in 500 array directions AD). As shown in FIG. 4B showing the portion surrounded by the broken line circle B in FIG. 3, each cross-reinforcing member 520 is integrally composed of a pair of flat plate-shaped single portions 520a and 520b perpendicular to each other. There is. One piece 520a of the cross-reinforcing member 520 is in contact with one side surface of the panel longitudinal direction LD in the lateral rib 504W of each ceiling panel 500. Fixing tools F such as screws are passed through the plurality of through holes 520a (FIG. 6) previously formed in one portion 520a of the cross reinforcing member 520, and the fixing tool F has a lateral rib 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 at an acute angle with respect to the connecting portion extending direction JD in a plan view. In a plan view, the angle formed by the cross-reinforcing member 520 and the connecting portion extending direction JD (of 90 ° or less) is preferably 80 ° to 90 °.
In this example, since the ceiling panel 500 is made of resin, even if the ceiling panel 500 is not formed with a through hole for passing the fixture F in advance, the fixture F may be flanged 502 or ribbed. It can be penetrated through 504.
Since the cross-reinforcing member 520 extends in a direction intersecting the connecting portion J and intersects the connecting portion J in a plan view, it is mainly in a vertical plane orthogonal to the connecting portion extending direction JD (and by extension, in this example). (In the vertical plane parallel to the arrangement direction AD), it acts to suppress the bending of the ceiling 50, which tends to become a bent shape (see FIG. 5 (b)) that descends downward toward the connection portion J. 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 of the entire ceiling 50 against a downward load. As a result, for example, the degree of freedom in the assembly procedure when assembling the unit bath 1 can be improved, and by extension, the workability of the unit bath can be improved.
This will be described in more detail below.
When assembling the unit bath 1, first, the lower end of the support column 40 is fixed to the waterproof pan 21 or the like at the four corners to erect the support column 40, and then the wall panel 30 and the ceiling panel 500 are assembled to the support column 40. .. Here, if the ceiling panel 500 can be assembled before the wall panel 30 is assembled, the upper end of the support column 40 is fixed by the ceiling 50 at the time of the subsequent assembly of the wall panel 30, and the wobbling of the support column 40 is suppressed. It is desirable because it is done.
However, if, for example, as in Patent Document 1, the pair of ceiling panels 500 are not reinforced by the cross reinforcing member 520 but are reinforced only by the connecting portion reinforcing member 540, before assembling the wall panel 30. When the ceiling 50 is to be assembled to the upper end of the support column 40, the ceiling 50 has a curved shape in which the connecting portion J is convex downward in a vertical plane parallel to the connecting portion extending direction JD by the connecting portion reinforcing member 540. Although the tendency to bend (see FIG. 5A) is suppressed, the connection is made in the vertical plane perpendicular to the connecting portion extending direction JD (and in this example, in the vertical plane parallel to the arrangement direction AD). It tries to bend into a bent shape (see FIG. 5B) that lowers downward toward the portion J. Therefore, it is difficult to assemble the ceiling 50 to the upper end of the stanchions 40 in a state where the wall panel 30 is not assembled between the stanchions 40. Therefore, in this case, it is necessary to take a procedure of assembling the wall panel 30 between the columns 40 and then assembling the ceiling 50 after installing the columns 40. As a result, when the ceiling 50 is assembled, the outer peripheral edge of the ceiling 50 is supported by the wall panel 30, so that the ceiling 50 can be suppressed from hanging down, and the ceiling 50 can be assembled relatively stably. However, in that case, when the wall panel 30 is assembled between the columns 40, the column 40 whose upper end is not fixed tends 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 the present embodiment, by reinforcing the pair of ceiling panels 500 with the cross reinforcing member 520 in addition to the connecting portion reinforcing member 540, the ceiling 50 is placed in the vertical plane orthogonal to the connecting portion extending direction JD ( As a result, in this example, it is possible to suppress the bending that tends to become a bent shape (see FIG. 5B) that decreases downward toward the connecting portion J (in the vertical plane parallel to the arrangement direction AD).
As a result, the unit bath 1 can be assembled by the following procedure.
That is, first, the support columns 40 are erected by fixing the lower ends of the support columns 40 to the waterproof pan 21 or the like at the four corners.
Further, as shown in FIG. 6, the ceiling 50 is assembled. At that time, first, the edge 501s of the pair of ceiling panels 500 are butted against each other, the connecting portion reinforcing member 540 is brought into contact with the connecting portion J, and these are fixed by the fixture F. As a result, the connecting portion reinforcing member 540 is attached to the connecting portion J, and the edge 501s of the ceiling panels 500 that are abutted against each other are connected to each other. Next, the cross reinforcing member 520 is attached to the lateral rib 504W of each ceiling panel 500 by the fixture F. Further, in this example, a corner connecting tool 550 for connecting the ceiling 50 and the support column 40 is attached to the corners of 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 projects below the lower end of the ceiling 50.
Then, as shown in FIG. 7, the assembled ceiling 50 is assembled to the upper end of the support column 40. At that time, the portions of the corner connecting tools 550 provided at the four corners of the ceiling 50 that protrude below 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 connecting tool 550 and the through hole 40a in the upper end portion of the support column 40 communicate with each other, and the corner connecting tool 550 is fixed to the support column 40 by the fixing tool F. Here, in the present embodiment, since the ceiling 50 is made difficult to hang down by the connecting portion reinforcing member 540 and the cross reinforcing member 520, the work of assembling the ceiling 50 to the upper end of the support column 40 can be stably performed. ..
After that, as shown in FIG. 8, the wall panel 30 and the door 31 are assembled between the columns 40. At this time, since the upper end of the support column 40 is suppressed from wobbling by the ceiling 50, the wall panel 30 can be assembled 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 connecting portion reinforcing member 540, the rigidity of the entire ceiling 50 against a downward load can be increased, and by extension, the rigidity of the entire ceiling 50 with respect to a downward load can be increased. , The hanging of the ceiling 50 can be effectively suppressed. Therefore, at the time of construction of the unit bath 1, the ceiling 50 can be assembled to the upper end of the support column 40 before the wall panel 30 is assembled, so that the subsequent assembly work of the wall panel 30 can be stably performed. .. Therefore, the workability of the unit bath 1 can be improved.
Further, according to the present embodiment, even after the construction of the unit bath 1, the ceiling 50 is more effectively suppressed from hanging due to the weight of the ceiling 50 and the load of the ventilation fan, the lighting fixture, etc. 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。 Note that, as in the modified example of FIG. 9, in a plan view, the pair of ceiling panels 500 are not reinforced by the connecting portion reinforcing member 540, but are reinforced only by one or a plurality (preferably a plurality of) cross reinforcing members 520. May be done.
In the example of FIG. 9, a pair of ceiling panels 500 are reinforced by four cross-reinforcing members 520.
Even with this configuration, the ceiling 50 is bent downward in the vertical plane orthogonal to the connecting portion extending direction JD (in the vertical plane parallel to the arrangement direction AD in this example) toward the connecting portion J. It is possible to effectively suppress bending to a shape (see FIG. 5B), and a curved shape in which the ceiling 50 is convex downward in a vertical plane parallel to the connecting portion extending direction JD (FIG. 5 (b)). It is possible to effectively suppress bending to a).). 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。 As shown in the examples of FIGS. 2 and 9, at least one (preferably all) of the cross reinforcing members 520 provided on the pair of ceiling panels 500 in a plan view. It is preferable that both end portions 521 of the 520 are located outside the panel arrangement direction AD with respect to the respective centers C of the pair of ceiling panels 500 in the arrangement direction AD of the pair of ceiling panels 500. According to this configuration, the cross reinforcing member 520 can be arranged at the central portion of each panel 500, which is relatively easy to hang down, or at the central portion of the ceiling 50 when the entire ceiling 50 is viewed, so that the rigidity of the entire ceiling 50 is rigid. Can be further improved.
In the examples of FIGS. 2 and 9, both end portions 521 of each cross-reinforcing member 520 are located inside (inner peripheral side) of 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。 Further, as in the examples of FIGS. 2 and 9, at least one (preferably all) of the cross reinforcing members 520 provided on the pair of ceiling panels 500 in a plan view. It is preferable that 520 intersects the connecting portion J inside the connecting portion extending direction JD with respect to both end portions Je of the connecting portion J. In other words, it is preferable that the cross-reinforcing member 520 does not intersect the connecting portion J at both ends Je of the connecting portion J in a plan view. According to this configuration, the ceiling 50 is directed downward in the vertical plane orthogonal to the connecting portion extending direction JD (in the vertical plane parallel to the arrangement direction AD in this example) toward the connecting portion J. It is possible to more effectively suppress bending into a bent shape (see FIG. 5 (b)), and a curved shape in which the ceiling 50 is convex downward in a vertical plane parallel to the connecting portion extending direction JD (FIG. 5 (b)). 5 (a)) can be more effectively suppressed from bending. 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, in the plan view, each of the pair of ceiling panels 500 has ribs 504 inside the outer peripheral edge of the ceiling panel 500, and the pair of ceiling panels. Of the one or more cross-reinforcing members 520 provided in the 500, at least one (preferably all) cross-reinforcing members 520 are each rib 504 (specifically, lateral rib 504W) of the pair of ceiling panels 500. ) Is attached, it is preferable. According to this, the mounting work when mounting the cross reinforcing member 520 inside the outer peripheral edge of the ceiling panel 500 becomes easy. Therefore, the workability of the ceiling can be improved.
The rib 504 may not be provided inside the outer peripheral edge of the ceiling panel 500. In that case, the cross reinforcing member 520 may be attached inside the outer peripheral edge of the ceiling panel 500 by adhesion 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。 Further, in a plan view, at least one of the cross-reinforcing members 520 provided on the pair of ceiling panels 500 may be mounted on the outer peripheral edge of the ceiling panel 500. 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 examples of FIGS. 2 and 9, in a plan view, the plurality of cross-reinforcing members 520 intersect with the connecting portion J inside the connecting portion extending direction JD with respect to both end portions Je of the connecting portion J, respectively. Further, it is preferable that each of these cross-reinforcing members 520 is parallel to the arrangement direction AD of the pair of ceiling panels 500. According to this configuration, the ceiling 50 is directed downward in the vertical plane orthogonal to the connecting portion extending direction JD (in the vertical plane parallel to the arrangement direction AD in this example) toward the connecting portion J. It is possible to more effectively suppress bending into a bent shape (see FIG. 5 (b)), and a curved shape in which the ceiling 50 is convex downward in a vertical plane parallel to the connecting portion extending direction JD (FIG. 5 (b)). 5 (a)) can be more effectively suppressed from bending. 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 shown in the example of FIG. 2, in a plan view, at least one (preferably all) of the cross reinforcing members 520 provided on the pair of ceiling panels 500 and the connecting portion. It is preferable that the reinforcing members 540 do not intersect with each other. According to this configuration, it is possible to avoid the formation of a portion having high rigidity in the entire ceiling 50, so that the balance of rigidity of the entire ceiling 50 can be improved.

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 shown in the example of FIG. 2, in a plan view, a pair of cross-reinforcing members 520 intersect with the connecting portion J on both sides of the connecting portion extending direction JD with respect to the center O of the connecting portion extending direction JD of the connecting portion J. Therefore, in a plan view, it is preferable that the connecting portion reinforcing member 540 is located between the pair of cross reinforcing members 520. According to this configuration, on the central 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. On both ends of the JD, the pair of cross-reinforcing members 520 on both sides of the connecting portion extending direction JD effectively suppresses the ceiling 50 from bending, so that the balance of rigidity of the entire ceiling 50 can be 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 shown in the example of FIG. 2, in a plan view, at least one (preferably all) of the cross reinforcing members 520 provided on the pair of ceiling panels 500 is connected. A position closer to the end portion 541 of both end portions 541 of the connecting portion reinforcing member 540 adjacent to the cross reinforcing member 520 than the end portion Je of both end portions Je of J adjacent to the cross reinforcing member 520. Therefore, it is preferable that it intersects with the connecting portion J. Normally, a ventilation fan, a lighting fixture, or the like is attached to the center (inner peripheral side) of the ceiling 50, so that it is easy to hang down. Therefore, by arranging the cross reinforcing member 520 as close to the center of the ceiling 50 as possible, the balance of rigidity 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 above example, 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, even in that case, the reinforcing structure of the ceiling panel may have the above-mentioned configuration when at least a pair of ceiling panels 50 adjacent to each other are viewed among the ceiling panels 50 constituting the ceiling 50.

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 reinforced structure of the ceiling panel according to the present invention can be used for the 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 area, 21: Waterproof pan, 30: Wall panel, 31: Door, 40: Support, 50: Ceiling, 500: Ceiling panel, 501: Edge edge, 502 : Flange, 503: Base plate, 503a, 503b: Through hole, 504, 504L, 504W: Rib, 520: Cross reinforcement member, 520a, 520b: One part, 521: Cross reinforcement member end, 540: Connection part reinforcement Member, 540a, 540b: One part, 541: End of connection part reinforcement member, 550: Corner connector, AD: Arrangement direction, F: Fixture, J: Connection part, JD: Connection part extension direction, LD: Panel longitudinal direction, WD: Panel width direction

Claims

With cross-reinforcing members attached to each of a pair of adjacent ceiling panels
In a plan view, the cross-reinforcing member extends in a direction intersecting the connecting portion extending direction parallel to the connecting portion in which the edge edges of the pair of ceiling panels are abutted and connected to each other. intersects with the connecting portion,
In a plan view, both ends of the cross-reinforcing member are located outside the center of each of the pair of ceiling panels in the arrangement direction of the pair of ceiling panels, which is a reinforcement structure of the ceiling panel.

With cross-reinforcing members attached to each of a pair of adjacent ceiling panels
In a plan view, the cross-reinforcing member extends in a direction intersecting the connecting portion extending direction parallel to the connecting portion in which the edge edges of the pair of ceiling panels are abutted and connected to each other. It intersects the connection and
In a plan view, each of the pair of ceiling panels has ribs inside the outer peripheral edge of the ceiling panel.
The cross-reinforcing member is a ceiling panel reinforcing structure attached to each of the ribs of the pair of ceiling panels.

With cross-reinforcing members attached to each of a pair of adjacent ceiling panels
In a plan view, the cross-reinforcing member extends in a direction intersecting the connecting portion extending direction parallel to the connecting portion in which the edge edges of the pair of ceiling panels are abutted and connected to each other. It intersects the connection and
A connecting portion reinforcing member extending in the extending direction of the connecting portion and attached to the connecting portion is further provided.
A ceiling panel reinforcing structure in which the cross reinforcing member and the connecting portion reinforcing member do not intersect each other in a plan view.

With cross-reinforcing members attached to each of a pair of adjacent ceiling panels
In a plan view, the cross-reinforcing member extends in a direction intersecting the connecting portion extending direction parallel to the connecting portion in which the edge edges of the pair of ceiling panels are abutted and connected to each other. It intersects the connection and
A connecting portion reinforcing member extending in the extending direction of the connecting portion and attached to the connecting portion is further provided.
In a plan view, the pair of cross-reinforcing members intersect the connecting portion on both sides of the connecting portion in the extending direction of the connecting portion with respect to the center of the connecting portion in the extending direction of the connecting portion.
In a plan view, the connecting portion reinforcing member is a ceiling panel reinforcing structure located between the pair of cross reinforcing members.

The aspect according to any one of claims 1 to 4, wherein the cross-reinforcing member intersects the connecting portion on the inside in the extending direction of the connecting portion with respect to both ends of the connecting portion in a plan view. Reinforcing structure for ceiling panels.

In a plan view, the plurality of cross-reinforcing members intersect with the connecting portion inside the connecting portion extending direction from both ends of the connecting portion, respectively.
The ceiling panel reinforcement structure according to any one of claims 1 to 5 , wherein the plurality of cross-reinforcing members are parallel to each other in the arrangement direction of the pair of ceiling panels.

In a plan view, the cross-reinforcing member is closer to the cross-reinforcing member than both ends of the connecting portion adjacent to the cross-reinforcing member. The reinforced structure of the ceiling panel according to claim 3 or 4 , which intersects the connection portion at a position close to the end portion of the ceiling panel.

With multiple ceiling panels connected to each other,
The reinforcing structure of the ceiling panel according to any one of claims 1 to 7 , which is attached to at least a pair of ceiling panels adjacent to each other among the plurality of ceiling panels.
With a ceiling.