JP7217381B1 - Inspection opening structure - Google Patents

Abstract

An object of the present invention is to provide an inspection opening structure and the like in a louvered ceiling. A louvered ceiling (1) is formed by arranging joists (2) arranged in parallel so that steel materials having a U-shaped cross section are arranged so that the upper surface becomes an open surface. A gap is provided between the ceiling joist 2 located in the range of the inspection opening 7 of the louvered ceiling 1 and the ceiling joist 2 of the general part other than the inspection opening 7, which is arranged on the same line as the ceiling joist 2, and the inspection opening Projecting members 8 protruding from both ends of the joist 2 in the range of 7 are arranged at the internal corners of the steel material of the general joist 2 located on the same line as the joist 2 . [Selection drawing] Fig. 1

Description

TECHNICAL FIELD The present invention relates to an inspection opening structure for a louvered ceiling and the like.

In recent years, louvered ceilings are often used inside buildings and semi-outdoors. A louvered ceiling exposes the base material used to attach the board to the ceiling as it is as a finishing material. Patent Literature 1 describes a louvered ceiling in which louvered panels are placed on grid-like runner frames.

Japanese Patent Application Laid-Open No. 2004-76502

By the way, in a louvered ceiling, it is necessary to provide an inspection opening for various purposes. When installing an inspection opening, it is considered important not to impair the beauty of the louvered ceiling and to make it easy to open and close. There was no

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to provide an inspection opening structure for a louvered ceiling.

The present invention for achieving the above-mentioned object is an inspection opening structure in a louver ceiling in which joists are arranged side by side by arranging steel materials having a U-shaped cross section so that the upper surface becomes an open surface, A gap is provided between the joists located and the joists of the general part other than the inspection opening located on the same line as the joists, and the protruding member protruding from both ends of the joists in the range of the inspection opening is located on the same line as the joist, and is placed at the inner corner of the steel material of the general joist, and the protruding member is joined to the joist in the range of the inspection opening by a connector. The inspection door structure is characterized by:

According to the present invention, the ceiling joists in the range of the inspection opening and the projecting member constitute the lid portion of the inspection opening, and the ceiling ceiling protrudes so as to be positioned on the same line as the ceiling joists of the general portion of the louvered ceiling. Since it is positioned by the members, the appearance of the louvered ceiling is not spoiled. In addition, if the cover is lifted from below, the cover can be freely moved in a plane or changed in posture, so that the cover can be easily removed from the inspection port. When attaching the cover, the procedure for removing the cover may be reversed, and the inspection door can be easily opened and closed.

The steel material has a folded portion that is folded back inward at the upper end of the side surface, and the protruding member is arranged below the folded portion of the steel material of the joist at the joist of the general portion. is desirable.
As a result, when the lid is lifted up due to an earthquake or the like, the projecting member abuts against the folded portion of the steel joists of the general portion of the louvered ceiling from below, thereby preventing the lid from coming off.

For example, a plurality of rows of joists are located in the range of the inspection opening, and the plurality of rows of joists are connected to each other with a connecting material provided on the joist, and among the plurality of rows of joists, It is desirable that the protruding members are provided for two or more rows of joists, and that both ends of the connecting member in the longitudinal direction do not protrude outward from the joists in the range of the inspection opening .
As a result, a plurality of rows of joists can be used as a lid according to the size of the inspection opening, and by fixing the positional relationship of the plurality of rows of joists with the connecting member, the plurality of rows of joists It is possible to hold the shape of the lid including Moreover, the protruding member protrudes from two or more rows of joists and is arranged at the internal corner of the steel material of the common joist, so that the lid can be positioned while being supported by the protruding member.

The steel material has a folded portion that is folded back inward at the upper end of the side surface, and the protruding member is arranged below the folded portion of the steel material of the joist in the general part. The projecting member of is an internal corner of the steel material of the joist of the general portion, and is preferably arranged at an internal corner on the same side in a direction orthogonal to the longitudinal direction of the joist in plan view.
As a result, the lid portion can be slightly moved in a direction orthogonal to the longitudinal direction of the joists in a plan view, and the planar position of the protruding member is shifted from the folded portion of the steel material of the joists of the general portion, The lid can be easily removed.

In the general part of the louvered ceiling, a ceiling joist receiver extending in a direction perpendicular to the longitudinal direction of the ceiling joist in a plan view is provided on a plurality of rows of ceiling joists, and connects the ceiling joist receiver and the connecting member. It is desirable that the wire rod is arranged at a planar position corresponding to the ceiling joists in the inspection opening range and the ceiling joists of the general portion located on the same line as the ceiling joists.
As a result, the lid can be prevented from falling from the louver ceiling. In addition, since the wire rods are arranged in plane positions corresponding to the inspection opening and the joists of the general part, they cannot be seen from below the louvered ceiling, and the appearance of the louvered ceiling is maintained.

ADVANTAGE OF THE INVENTION According to this invention, the inspection opening structure etc. in a louvered ceiling can be provided.

The figure which shows the inspection opening 7 of the louvered ceiling 1. FIG. The figure which shows the cross section of the general part of the louvered ceiling 1, and the joists 2 and 2a in the inspection opening 7. FIG. The figure which shows the joint part of the connection material 6 and the joist 2a. 4A and 4B are diagrams for explaining a procedure for removing the lid portion 4; FIG. 4A and 4B are diagrams for explaining a procedure for removing the lid portion 4; FIG. An example of arrangement of projecting members 8 . The figure which shows cover part 4a, 4b.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

(1. Inspection opening 7 of louvered ceiling 1)
FIG. 1 is a diagram showing an inspection opening 7 of a louvered ceiling 1 according to an embodiment of the present invention. 1(a) is a view of the lower surface of the louvered ceiling 1, and FIG. 1(b) is a view of the upper surface of the louvered ceiling 1. FIG.

As shown in FIGS. 1(a) and 1(b), the louvered ceiling 1 has a joist 2 and a joist receiver 3. As shown in FIGS. A plurality of joists 2 are arranged side by side in plan view. A plurality of joist receivers 3 are arranged in parallel on the upper side of these joists 2 so as to be substantially perpendicular to the joist 2 in a plan view.

FIG. 2(a) is a cross-sectional view of the ceiling joists 2 in the general part of the louvered ceiling 1 (parts other than the inspection opening 7), showing a vertical cross section along the line AA in FIG. 1(b). is.

The joist 2 of this embodiment is a double bar in which two steel materials 21 are combined. The cross section of the steel material 21 has a concave shape having a bottom surface 211 and a pair of side surfaces 212, and the upper ends of the side surfaces 212 are provided with folded portions 213 that are folded back inward. Each steel material 21 is arranged so that the upper surface becomes an open surface, and the side surfaces 212 of the two steel materials 21 are joined to each other in the joist 2 of the present embodiment.

In the louvered ceiling 1, the lower surface of the ceiling joist 2 is exposed, and the ceiling joist 2 and the ceiling joist holder 3 are fixed using a clip or the like (not shown). As the joist receiver 3, a steel material (channel material) having a C-shaped cross section can be used, but it is not limited to this.

As shown in FIGS. 1(a) and 1(b), in the louvered ceiling 1, an inspection opening 7 is defined as a range including two rows of joists 2 between adjacent joist receivers 3. As shown in FIGS. The hoisting 2 in the range of the inspection opening 7 is the same member as the hoisting 2 in the general part, but in order to distinguish between the two, the hoisting 2 in the range of the inspection opening 7 will be described with a reference numeral 2a. . This also applies to joists 20 and 20a shown in FIG. 7(a), which will be described later.

At the boundary between the inspection opening 7 of the louvered ceiling 1 and the general part, a gap is provided between the joists 2 and 2a. The width of the gap is about 5 mm in consideration of the appearance of the louvered ceiling 1 and the ease of opening and closing the inspection door 7, but is not limited to this. At the end faces of the joists 2, 2a facing each other with a gap therebetween, burrs and the like are polished to prevent the worker from being cut. Alternatively, protective materials may be provided on the end faces of the joists 2, 2a to prevent cuts on the operator.

Two rows of joists 2a positioned within the inspection opening 7 are connected by a connecting member 6. As shown in FIG. The connecting members 6 are arranged along the width direction of the joist 2a, and are provided in plurality (two in the example of the figure) at intervals in the longitudinal direction of the joist 2a. In addition, "the width direction of the ceiling joint 2a" is a direction orthogonal to the longitudinal direction of the ceiling joint 2a in plan view, and corresponds to the left-right direction in FIGS. 1(a) and (b). Also, in the later description, "the width direction of the lid portion 4" also refers to the same direction.

Both ends of the connecting member 6 are joined to each of the two rows of joists 2a. FIG. 3 is a diagram showing a joint portion between the connecting member 6 and the joist 2a, and shows a vertical cross section along the line BB in FIG. 1(b).

For the connecting member 6, for example, a channel material having a C-shaped cross section is used, like the joist receiver 3, and both ends thereof are joined to the steel members 21 of the joist 2a using clips 61 and screws 62. The clip 61 is formed of a metal plate, the top of which is fastened to the upper surface of the connecting member 6 with a screw 62, and the hook portion 611 at the lower end of the clip 61 presses the folded portion 213 of the steel member 21 from below, thereby connecting the connecting member 6 and the connecting member 6 together. The steel material 21 is joined.

As shown in FIGS. 1(a) and 1(b), the lid portion 4 of the inspection opening 7 is formed by the joists 2a in the area of the inspection opening 7 and the connecting member 6 described above. The connecting member 6 holds the shape of the lid portion 4 by fixing the positional relationship between the joists 2a. The length of the connecting member 6 is determined in consideration of the appearance of the louvered ceiling 1 so that both ends of the connecting member 6 in the longitudinal direction do not protrude outside the ceiling joist 2a within the inspection opening 7. - 特許庁Further, the position of the connecting member 6 in the longitudinal direction of the joist 2a is about 100 mm inside from the end of the joist 2a in the longitudinal direction, but is not limited to this.

As shown in FIG. 1(b), the lid portion 4 further has protruding members 8 protruding from both ends of the joist 2a in the longitudinal direction. The protruding member 8 is provided for each of the two rows of joists 2a in the range of the inspection opening 7, and is placed on the joist 2 of the general part of the louvered ceiling 1 located on the same line as each joist 2a. be. Thereby, the lid portion 4 is supported on the louver ceiling 1 .

FIG. 2(b) is a cross-sectional view of the ceiling joist 2a at the inspection opening 7, showing a vertical cross-section taken along line CC in FIG. 1(b).

In this embodiment, an angle member having an L-shaped cross section is used as the protruding member 8 described above. The protruding member 8 is arranged so that the L-shaped corner overlaps the internal corner formed by the bottom surface 211 and the side surface 212 of the steel material 21 of the joist 2a. spliced.

The protruding members 8 are provided on the steel members 21 positioned at both ends in the width direction of the lid portion 4, that is, on the leftmost steel member 21 and the rightmost steel member 21 in FIG. 2(b). The protruding members 8 are arranged and fixed to the inside corners of the steel materials 21, 21 on the same side (the left side in the example of FIG. 2(b)) in the width direction of the joist 2a.

In this embodiment, as shown in FIG. 2(a), all the projecting members 8 are located on the same side of the joist 2 in the width direction of the steel material 21 of the joist 2 of the general portion of the louvered ceiling 1 (see FIG. 2 ( In the example of a), it is arranged at the inside corner on the left side) and abuts on the side surface 212 of the steel material 21 . Thereby, the lid part 4 is positioned so that the ceiling joist 2 of the general part of the louver ceiling 1 and the ceiling joist 2a of the inspection opening 7 are positioned on the same line, and the appearance is excellent.

2A, each protruding member 8 is arranged below the folded portion 213 of the steel member 21 in the joist 2 of the general portion of the louver ceiling 1. As shown in FIG. Therefore, even if the lid portion 4 is slightly lifted due to an earthquake or the like, the protruding member 8 hits the folded portion 213 of the steel material 21 of the general joist 2 from below, thereby allowing the lid portion 4 to escape from the louver ceiling 1. is prevented.

As shown in FIG. 1(b), the connecting member 6 of the lid portion 4 and the ceiling joist receiver 3 of the general portion of the louvered ceiling 1 are connected by a wire rod 9 such as a wire, whereby the louvered ceiling of the lid portion 4 is connected. Falling from 1 is prevented. One end of the wire rod 9 is detachably attached to the joist holder 3 using a carabiner (not shown) or the like, and the other end is connected to the connecting member 6 .

When the inspection opening 7 is closed by the lid portion 4, the wire rod 9 is positioned at a planar position corresponding to the ceiling joist 2a of the inspection opening 7 and the ceiling joist 2 of the general part located on the same line as the ceiling joist 2a. placed. Therefore, the wire 9 is hidden so that it cannot be visually recognized from below the louvered ceiling 1.例文帳に追加

(2. Opening and closing inspection door 7)
In order to remove the lid portion 4 from the louver ceiling 1 and open the inspection port 7, first, as shown in FIG. As a result, as shown in FIG. 4(b), the protruding member 8 that has been in contact with the side surface 212 of the steel member 21 of the joist 2 of the general portion of the louvered ceiling 1 is moved out of the position immediately below the folded portion 213. . FIG. 4(b) is a cross section similar to FIG. 2(a), showing a cross section taken along line AA in FIG. 4(a).

FIG. 5(a) is a view showing a vertical cross section along line DD in FIG. 4(a). By moving the lid portion 4 horizontally as described above, the planar position of the protruding member 8 is displaced from directly below the folded portion 213 of the steel material 21 of the general joist 2, as indicated by the arrow a in FIG. 5(a). Thus, the lid portion 4 can be lifted from below.

As a result, the lid portion 4 can be freely moved in a plane and changed in posture, and the lid portion 4 can be easily removed from the inspection opening 7 . For example, as shown in FIG. 5B, by shifting the planar position of the lid 4 from the joists 2 of the general portion of the louvered ceiling 1, the lid 4 is lowered below the louvered ceiling 1, and the lid 4 is inspected. It becomes possible to remove from the mouth 7. When attaching the lid portion 4 to the inspection port 7, the above procedure should be reversed.

Since the wire rod 9 prevents the lid 4 from falling when opening and closing the inspection port 7, the opening and closing operation can be performed safely. The length of the wire 9 is such that when the cover 4 removed from the inspection opening 7 hangs below the louvered ceiling 1, it does not hit a person or the like present below the louvered ceiling 1. - 特許庁If it is desired to completely remove the lid portion 4 from the louver ceiling 1, the connection between the wire 9 and the ceiling joist receiver 3 may be released.

Thus, in the present embodiment, the ceiling joist 2a in the range of the inspection opening 7 and the projecting member 8 constitute the lid portion 4 of the inspection opening 7, and the ceiling joist 2a is the general portion of the louver ceiling 1. Since it is positioned by the projecting member 8 so as to be positioned on the same line as the edge 2, the appearance of the louvered ceiling 1 is not spoiled. Further, if the lid portion 4 is lifted from below, the subsequent planar movement and attitude change become free, so the lid portion 4 can be easily removed from the inspection opening 7 . When the lid portion 4 is attached, the removal operation can be performed in the reverse order, and the inspection opening 7 can be easily opened and closed.

Further, in this embodiment, when the lid portion 4 is lifted due to an earthquake or the like, the protruding member 8 hits the folded portion 213 of the steel material 21 of the joist 2 of the general portion of the louvered ceiling 1 from below, so that the lid portion 4 is lifted. It can prevent escape.

Moreover, in this embodiment, the connecting member 6 can fix the positional relationship of the two rows of ceiling joists 2a in the range of the inspection opening 7 and maintain the shape of the lid portion 4 including the two rows of ceiling joists 2a. Moreover, the protruding member 8 protrudes from these two rows of joists 2a and is arranged at the inner corner of the steel material 21 of the common joist 2, so that the lid portion 4 can be positioned while being supported by the protruding member 8.

Further, in this embodiment, all the protruding members 8 protruding from the two rows of joists 2a are located on the same side (left side in FIG. 2(a)) of the steel materials 21 of the joists 2 in the general part of the louvered ceiling 1. placed in the department. As a result, the lid part 4 can be slightly moved in the width direction of the joist 2a, and the planar position of the protruding member 8 is shifted from the folded part 213 of the steel material 21 of the joist 2 of the general part, and the lid The part 4 can be easily removed.

Further, in this embodiment, the wire rod 9 prevents the lid portion 4 from falling from the louvered ceiling 1 . Since the wire rod 9 is arranged at a plane position corresponding to the inspection opening 7 and the joists 2, 2a of the general part, it cannot be visually recognized from below the louvered ceiling 1, and the appearance of the louvered ceiling 1 is maintained.

However, the invention is not limited to the above embodiments. For example, in this embodiment, the same member (roofing 2a) as the joisting 2 of the louver ceiling 1 is used as the lid portion 4 of the inspection opening 7, and the connecting member 6 and the protruding member 8 are also available on site as described above. general-purpose products are available. However, the configurations of the connecting member 6 and the protruding member 8 are not limited to those described above. For example, a rectangular steel pipe (square pipe) or the like may be used as the protruding member 8 instead of the angle material. Moreover, as will be described later, the configuration of the joist 2 (2a) is not limited to the double bar described above.

In the present embodiment, as shown in FIG. 2(b), the protruding members 8 are fixed to the steel members 21 at both ends in the width direction of the lid portion 4, but the protruding members 8 are fixed to the joists 2a in two or more rows. For example, as shown in FIG. 6A, the protruding member 8 may be fixed to the steel material 21 on the same side (the left side in the example of the figure) of the two rows of joists 2a in the width direction. However, from the viewpoint of the stability of the lid portion 4, it is desirable to fix the protruding members 8 to the steel members 21 at both ends of the lid portion 4 in the width direction.

Further, in this embodiment, as shown in FIG. 2(a), all the projecting members 8 are located on the same side (the left side in the example of FIG. 2(a)) of the steel material 21 of the joist 2 of the general portion of the louvered ceiling 1. However, as shown in FIG. 6(b), if the steel material 21 does not have a folded portion 213, the plurality of protruding members 8 can be placed on different sides of the steel material 21 of the joist 2 of the general part. may be placed in the inside corner of the In the example of FIG. 6(b), the protruding member 8 is arranged at the left internal corner of the steel material 21 in the left joist 2, and is arranged at the right internal corner of the steel 21 in the right joist 2. ing.

In this case, since the lid portion 4 cannot be horizontally moved, the lid portion 4 cannot be removed when the steel member 21 has the folded portion 213 . However, if the folded portion 213 does not exist in the steel material 21 as shown in FIG. can also be removed after the lid 4 is lifted.

In this embodiment, one row of joists 2, 2a is formed by two steel materials 21, and the range including two rows of joists 2a is the inspection opening 7, but the joists 2, 2a are formed The number of steel materials 21 and the number of rows of ceiling joists 2a in the inspection opening 7 are not limited to this.

For example, in the example of FIG. 7(a), the ceiling joists 20 of the louvered ceiling 1a are formed of one piece of steel 21, and the inspection opening 7 includes three rows of ceiling joists 20a. The lid portion 4a is formed by connecting these three rows of joists 20a with a connecting member 6, and the protruding members 8 are located at both ends of the lid portion 4a in the width direction of the three rows of joists 20a. provided in Thus, in the present invention, a plurality of rows of joists 20a may be used as the lid portion 4a according to the size of the inspection opening 7, and the protruding member 8 may be provided on two or more rows of joists 20a. .

Alternatively, as shown in the lid portion 4b of FIG. 7(b), only one row of joists 2a may be included in the range of the inspection opening 7, and the protruding member 8a may be provided on the one row of joists 2a. This protruding member 8a is a single long member, and both ends thereof are provided so as to protrude from both ends of the joist 2a. placed above.

A support member 10 extending in the width direction of the ceiling joist 2a is mounted on the ceiling joist 2a, and both ends of the support member 10 are placed on the ceiling joist 2 of the general portion of the louvered ceiling 1. If the lid portion 4b cannot be stably supported only by the protruding member 8a, the lid portion 4b can be more stably supported by adding the support member 10 described above. It is also possible to configure The support member 10 has the same configuration as the connecting member 6 described above, and in this example, a wire 9 is provided so as to connect the support member 10 and the joist receiver 3 .

Although the preferred embodiments of the present invention have been described above with reference to the accompanying drawings, the present invention is not limited to such examples. It is obvious that a person skilled in the art can conceive of various modifications or modifications within the scope of the technical ideas disclosed in the present application, and these naturally belong to the technical scope of the present invention. Understood.

1, 1a: louver ceiling 2, 2a, 20, 20a: joist 3: joist receiver 4, 4a, 4b: lid 6: connecting member 7: inspection port 8, 8a: protruding member 9: wire 21: steel 211 : Bottom 212: Side 213: Folded part

Claims (5)

An inspection opening structure in a louvered ceiling in which joists are arranged so that steel materials with a concave-shaped cross section are arranged so that the upper surface is open,
A gap is provided between the joists located in the inspection opening range and the joists of the general part other than the inspection opening, located on the same line as the joist,
Protruding members protruding from both ends of the joists in the range of the inspection opening are located on the same line as the joists, and are arranged at the internal corners of the steel materials of the joists of the general part ,
The inspection opening structure , wherein the protruding member is joined to a ceiling joist within the inspection opening with a connector. The steel material has a folded portion folded inward at the upper end of the side surface,
2. The inspection door structure according to claim 1, wherein the protruding member is arranged below the folded portion of the steel material of the joist of the general portion at the joist. A plurality of rows of ceiling joists are located in the range of the inspection opening,
The multiple rows of joists are connected with a connecting material provided on the joist ,
The projecting member is provided for two or more rows of joists among the multiple rows of joists ,
2. The inspection opening structure according to claim 1 , wherein both ends of the connecting member in the longitudinal direction do not protrude outward from the joists of the inspection opening. The steel material has a folded portion folded inward at the upper end of the side surface,
The protruding member is arranged below the folded portion of the steel material of the joist at the joist of the general portion,
All the protruding members are internal corners of the steel materials of the joists of the general portion, and are arranged at the internal corners on the same side in a direction orthogonal to the longitudinal direction of the joists in plan view. The inspection opening structure according to claim 3. In the general part of the louvered ceiling, a joist receiver extending in a direction orthogonal to the longitudinal direction of the joist in a plan view is provided on a plurality of rows of joists,
A wire connecting the joist receiver and the connecting member is arranged at a planar position corresponding to the joist in the inspection opening range and the joist of the general part located on the same line as the joist. 5. The inspection door structure according to claim 3 or 4, characterized in that:

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