JP3896854B2 - System ceiling - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a system ceiling.
[0002]
[Prior art]
In the conventional system ceiling, a plurality of main ceiling support bars installed substantially in parallel to each other are configured such that sub-ceiling support bars arranged in a substantially orthogonal direction are spanned between adjacent main ceiling support bars. (For example, Japanese Utility Model Publication No. 6-34983). The sub-ceiling support bar has an insertion portion that engages with the engagement portion provided on the main ceiling support bar at both ends of the main portion extending in the longitudinal direction. The insertion portion is bent in a substantially right angle direction with respect to the side surface of the main portion, but its tip is straight and there is no mounting locking projection. Moreover, when removing the sub-ceiling support bar, it was not possible to remove it unless the distal end of the insertion portion was deformed with a general-purpose tool.
[0003]
[Problems to be solved by the invention]
As described above, in the tip processing of the insertion part of the sub-ceiling support bar used in the conventional system ceiling, the tip of the insertion part is straight, so the tip of the insertion part is opposite to the hole of the engagement part when inserting the tip of the sub-ceiling support bar. The sub-ceiling support bar is difficult to put in and the workability is lowered. In addition, if the insertion part of the auxiliary ceiling support bar is forcibly inserted into the hole of the engagement part, the root and tip of the insertion part may be deformed, and the engagement strength of the auxiliary ceiling support bar may be reduced. there were.
[0004]
Therefore, an object of the present invention is to provide a system ceiling that facilitates easy entry when the insertion portion of the sub-ceiling support bar is engaged, improves workability, and prevents deformation of the insertion portion.
[0005]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, the system ceiling according to claim 1 of the present invention is configured such that the sub-ceiling support bars arranged in a substantially orthogonal direction are adjacent to the plurality of main ceiling support bars installed substantially parallel to each other. In a system ceiling that is spanned between main ceiling support bars and in which a ceiling material and facility equipment are arranged in a grid composed of the main ceiling support bar and the sub ceiling support bar, the sub ceiling support bar includes: At both ends of the main portion extending in the longitudinal direction, there are insertion portions that protrude in a direction substantially perpendicular to the side surface of the main portion and enter and engage with an engagement portion provided on the main ceiling support bar. Just before entering the engagement portion, the main ceiling support bar was bent toward the main portion side so as to be substantially parallel to the main ceiling support bar.
[0006]
In this way, the sub-ceiling support bar has an insertion portion that protrudes in a direction substantially perpendicular to the side surface of the main portion at both ends of the main portion extending in the longitudinal direction and enters and engages with the engagement portion provided on the main ceiling support bar. Since the front end of this insertion part is bent toward the main part side of the sub ceiling support bar so as to be substantially parallel to the main ceiling support bar immediately before entering the engagement part, the insertion part of the sub ceiling support bar Can be easily inserted into the engaging portion of the main ceiling support bar, and the workability is improved.
[0007]
Further, along with this, when the insertion portion of the sub-ceiling support bar is inserted and engaged, a large force is not applied, and the root and the tip portion of the insertion portion are not deformed and the strength is not lowered.
[0008]
The system ceiling according to claim 2 is the system ceiling according to claim 1, wherein an attachment locking projection is provided on one of the insertion portion and the main ceiling support bar, and the attachment locking projection is engaged on the other. A retaining step was provided to stop. As described above, since the attachment locking projection is provided on one of the insertion portion and the main ceiling support bar, and the retaining step is provided on the other side, the auxiliary ceiling support bar is provided. Even if external force is applied, it becomes difficult to come off.
[0009]
The system ceiling according to claim 3 is the system ceiling according to claim 2, wherein the locking of the attachment locking projection and the retaining step is removed from the portion of the main ceiling support bar facing the vicinity of the distal end of the insertion portion. The operation tool insertion part for this was provided. As described above, the operation tool insertion portion for releasing the locking of the mounting locking projection and the retaining stepped portion is provided at the portion of the main ceiling support bar facing the vicinity of the distal end of the insertion portion. The auxiliary ceiling support bar can be easily removed by causing insertion into the operation tool insertion portion on the back side near the distal end of the insertion portion. As a result, when the sub-ceiling support bar is removed, the distal end of the insertion portion is not deformed with a general-purpose tool.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a perspective view of an essential part of a system ceiling according to an embodiment of the present invention, FIG. 2 is an explanatory view of installation of the system ceiling according to an embodiment of the present invention, and FIG.
[0011]
As shown in FIG. 1 and FIG. 2, the system ceiling includes a plurality of main ceiling support bars 1 installed substantially parallel to each other, and sub-ceiling support bars 2 arranged in a substantially orthogonal direction, and adjacent main ceiling support bars. 1, 1 and 1 are installed between the main ceiling support bar 1 and the sub ceiling support bar 2, and equipment such as ceiling materials and lighting fixtures are arranged in the lattice.
[0012]
The main ceiling support bar 1 is formed by bending a metal plate into a substantially inverted T-shaped cross section, and is suspended from the upper slab by hangers and suspension bolts. The configuration is the same as that disclosed in Japanese Utility Model Publication No. 6-34983. Further, the vertical piece 1a of the main ceiling support bar 1 is provided with an engaging portion 7 that engages with the sub-ceiling support bar 2, and a substantially groove-shaped flange 1b having an edge raised at the lower portion of the vertical piece 1a. The engaging portion 7 is cut and raised so as to penetrate in the longitudinal direction and is formed into a cylindrical shape. In this case, as shown in FIG. 3, they are cut and raised in opposite directions so as to be adjacent to each other on both side surfaces of the vertical piece 1a. Further, notches 7a are provided on both side portions of the engaging portion 7, and a bent portion 7b which is bent so as to protrude outward is provided in the longitudinal direction at the center portion.
[0013]
Further, the vertical piece 1 a is provided with a retaining step portion 6, a protruding piece 10, and an operation tool insertion portion 5. The retaining step portion 6 is obliquely cut and raised at a position close to the engaging portion 3 so that the opposite side of the engaging portion 3 protrudes. The protruding piece 10 is cut and raised so as to be substantially parallel to the flange 1b, and the operation tool insertion portion 5 is cut and raised in the vicinity of the protruding piece 10 into a hole or a concave shape.
[0014]
FIG. 4A is a front view of the auxiliary ceiling support bar in the embodiment of the present invention, and FIG. 4B is a side view thereof. As shown in FIG. 4, the sub-ceiling support bar 2 is formed by bending a metal plate in the same manner as the main ceiling support bar 1 to have a substantially inverted T-shaped cross section, and at both ends of the main part 11 extending in the longitudinal direction. It has an insertion part 3 that protrudes in a direction substantially perpendicular to the side face of the main part and enters and engages with an engagement part 7 provided on the main ceiling support bar 1.
[0015]
The main body 11 has a substantially groove-shaped flange 11b with an edge raised at the bottom of the vertical piece 11a. The insertion portion 3 is formed by bending a portion extending integrally from the end of the vertical piece 11a into a substantially L shape. The bending direction of the insertion portion 3 is opposite to both ends of the vertical piece 11a (FIG. 2). The insertion portion distal end 3a is bent toward the main portion 11 side of the sub-ceiling support bar 2 so as to be substantially parallel to the main ceiling support bar 1 immediately before entering the engagement portion 7 (FIG. 3). In this case, three reinforcing ribs 12 are provided on the vertical piece 11a of the main body 11 in the vicinity of the insertion portion 3, and one central rib 12a is continuously provided on the insertion portion 3 side. Further, the insertion portion 3 is provided with a mounting locking projection 4 and a locking groove 13. The attachment locking protrusion 4 is cut and raised in a chevron shape at the base of the bent insertion portion distal end 3 a and is locked to the retaining step 6 of the main ceiling support bar 1. The retaining step 6 is accommodated in an opening 4 a that is opened adjacent to the mounting locking projection 4. The operation insertion portion 5 is located at a portion of the main ceiling bar 1 where the vicinity of the insertion portion distal end 3a is opposed so that the attachment locking projection 4 and the retaining step portion 6 can be unlocked. . Further, the locking groove 13 is cut out at the distal end 3a of the insertion portion, and the protruding piece 10 is inserted.
[0016]
At the time of construction, when the sub-ceiling support bar 2 is engaged with the main ceiling support bar 1, the insertion part 3 is inserted into the engagement part 7 as shown in FIG. At this time, immediately before the insertion portion tip 3 a enters the engagement portion 7, the insertion portion tip 3 a and the main ceiling support bar 1 become substantially parallel, so that the engagement portion 7 can be easily entered. That is, the insertion portion tip 3a and the vertical piece 1a of the main ceiling support bar 1 can be made to face each other at a constant interval A. Thereafter, as shown in FIG. 5, the rib 12a of the insertion portion 3 is fitted to the bent portion 7b, the mounting locking projection 4 is locked to the retaining step 5, and the protruding piece 10 is locked. It is inserted into the groove 13. Thereby, even if an external force is applied to the insertion part 3, it does not come out. In this state, as shown in FIG. 6, when the sub-ceiling support bar 2 is removed, it can be easily removed by causing the general-purpose tool 8 to be inserted into the operation tool insertion portion 5 on the back side of the insertion portion distal end 3a. .
[0017]
As described above, according to this embodiment, the insertion portion distal end 3a of the sub-ceiling support bar 2 can be easily inserted into the engagement portion 7 of the main ceiling support bar 1, and the workability is improved. Accordingly, when the insertion portion 3 of the sub-ceiling support bar 2 is inserted and engaged, a large force is not applied, and the root and the tip portion of the insertion portion 3 are not deformed and the strength is not lowered.
[0018]
Further, by providing the mounting locking projection 4 on one of the insertion portion 3 and the main ceiling support bar 1 and providing the retaining step 6 on which the mounting locking projection 4 is locked on the other side, Even if an external force is applied to the ceiling support bar 2, it becomes difficult to come off. Further, since the operation tool insertion portion 5 is provided, the auxiliary ceiling support bar 2 can be easily removed and the insertion portion distal end 3a is not deformed by the general-purpose tool 8.
[0019]
Note that the attachment locking projection 4, the retaining step 6, and the operation tool insertion portion 5 may be omitted.
[0020]
【The invention's effect】
According to the system ceiling of the first aspect of the present invention, the sub-ceiling support bar is an engagement provided on the main ceiling support bar so as to protrude in a direction substantially perpendicular to the side surface of the main body at both ends of the main body extending in the longitudinal direction. And has an insertion part that engages and engages the main part of the sub-ceiling support bar so that the tip of the insertion part is substantially parallel to the main ceiling support bar immediately before entering the engagement part. Therefore, the tip of the insertion part of the sub-ceiling support bar can be easily inserted into the engagement part of the main ceiling support bar, and workability is improved.
[0021]
Further, along with this, when the insertion portion of the sub-ceiling support bar is inserted and engaged, a large force is not applied, and the root and the tip portion of the insertion portion are not deformed and the strength is not lowered.
[0022]
According to the second aspect of the present invention, the attachment locking projection is provided on one of the insertion portion and the main ceiling support bar, and the retaining step is provided on the other to lock the attachment locking projection. Even if external force is applied to the bar, it becomes difficult to come off.
[0023]
According to the third aspect of the present invention, since the operation tool insertion portion for releasing the locking between the mounting locking projection and the retaining step is provided at the main ceiling support bar portion where the vicinity of the distal end of the insertion portion faces. The auxiliary ceiling support bar can be easily removed by causing the tool to be inserted into the operation tool insertion portion on the back side near the distal end of the insertion portion. As a result, when the sub-ceiling support bar is removed, the distal end of the insertion portion is not deformed with a general-purpose tool.
[Brief description of the drawings]
FIG. 1 is a perspective view of an essential part of a system ceiling according to an embodiment of the present invention.
FIG. 2 is an explanatory diagram of installation of the system ceiling according to the embodiment of the present invention.
3 is an enlarged cross-sectional view of a main part of FIG.
4A is a front view of a sub-ceiling support bar according to an embodiment of the present invention, and FIG. 4B is a side view thereof. FIG. 5 is a diagram illustrating a mounting state of the sub-ceiling support bar according to an embodiment of the present invention. FIG.
FIG. 6 is an explanatory view showing a state in which the sub ceiling support bar is removed according to the embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Main ceiling support bar 2 Sub ceiling support bar 3 Insertion part 3a Insertion part front-end | tip 4 Locking protrusion 5 for operation tool Insertion part 6 Retaining step part 7 Engagement part 8 General-purpose tool 11 Main part

Claims (3)

With respect to a plurality of main ceiling support bars installed substantially parallel to each other, a sub ceiling support bar arranged in a substantially orthogonal direction is spanned between adjacent main ceiling support bars, and these main ceiling support bar and sub ceiling In a system ceiling in which ceiling materials and equipment are arranged in a grid composed of support bars, the sub-ceiling support bars are arranged at substantially right angles to the side surfaces of the main part at both ends of the main part extending in the longitudinal direction. It has an insertion portion that protrudes into and engages with an engagement portion provided on the main ceiling support bar, and the distal end of the insertion portion is substantially parallel to the main ceiling support bar immediately before entering the engagement portion. As described above, the system ceiling is bent toward the main body side of the auxiliary ceiling support bar. The system ceiling according to claim 1, wherein an attachment locking projection is provided on one of the insertion portion and the main ceiling support bar, and a retaining step is provided on the other of the insertion portion and the main ceiling support bar. The system ceiling according to claim 2, wherein an operation tool insertion portion for releasing the locking between the mounting locking projection and the retaining step is provided at a portion of the main ceiling support bar facing the vicinity of the distal end of the insertion portion.

Images