JPH031928Y2 - - Google Patents

Description

[Detailed description of the invention] [Technical field] This invention relates to an airtight structure for ceiling joints that is applied to clean rooms and other general rooms.

[Background technology]

Conventionally, as a ceiling structure, a plurality of ceiling bars with a T-shaped cross section are arranged in a lattice pattern, suspended from a ceiling slab, and the periphery of the ceiling board placed between the ceiling bars is aligned with the horizontal direction of the ceiling bars. There is one that is placed on a ceiling holder.

In order to maintain airtightness between the ceiling bar and the ceiling board in such a ceiling structure, we proposed the structure shown in Fig.
No. 083116]). In the figure, reference numeral 21 denotes a ceiling bar having a substantially inverted T-shape in cross section, and includes a vertical body part 21a, a horizontal ceiling receiving piece 21b extending from the lower end to both sides, and a hanging locking part formed at the upper end of the vertical body part 21a. 21c
It becomes. The side edge of the ceiling plate 22 is placed on the ceiling support piece 21b of the ceiling bar 21 via a packing 23 such as a cushion made of foamed resin, and the upper surface of the side edge is pressed down with a presser packing 24 made of rubber.

However, Patsuking 23 was unable to install the ceiling bar 2 at the site.
There was a problem in that it had to be pasted on 1, which was time-consuming. Furthermore, since the packing 23 is made of a soft material, it tends to stretch or become thinner when attached to the ceiling bar 21, which poses a problem in that airtightness deteriorates. Furthermore, since the ceiling bar 21 is generally made of aluminum steel with high thermal conductivity, it is easy for indoor heat to escape to the ceiling, and for cold temperature in the ceiling to be transmitted into the room. There was a problem that it was bad. Furthermore, there was a problem in that dew condensation occurred on the lower surface of the ceiling bar 21.

[Purpose of invention]

The purpose of this invention is to provide an airtight structure for ceiling joints that is easy to construct, provides reliable airtightness, improves heat insulation, and prevents condensation on the lower surface of the ceiling bar.

[Disclosure of invention]

The airtight structure of the ceiling joint of this invention includes a ceiling bar having a vertical body and a horizontal ceiling support piece extending from the lower end thereof, and a ceiling bar that is placed over the ceiling support piece of the ceiling bar to cover the upper surface of the ceiling support piece. The present invention includes a cover whose covering portion is made of a soft resin and whose bottom surface is covered with a hard resin, and a ceiling material whose edge portion is placed on the ceiling receiving piece via the cover.

With this configuration, the cover can be attached by placing it over the ceiling bar, which saves the effort of attaching it and improves workability. Further, the cover achieves airtightness through the soft resin portion, but since there is a hard resin portion, there is little misalignment or elongation, and high airtightness is achieved. Furthermore, since the bottom surface of the ceiling bar is covered with a resin cover, even if the ceiling bar is made of metal, it is difficult to conduct heat between the ceiling and the room, and condensation on the bottom surface of the ceiling bar can be prevented. .

Embodiment An embodiment of this invention is shown in FIGS. 1 to 13. In FIG. 1, reference numeral 1 indicates a plurality of ceiling bars, which are arranged in a grid pattern. Ceiling bar 1 is
It is suspended at an intersection or the like by hanging bolts 2 hanging from a ceiling slab (not shown). Reference numeral 3 denotes a ceiling plate, which is disposed between the ceiling bars 1 and whose peripheral edge is placed on the ceiling bars 1 as described below. The ceiling plate 3 is made of a heat insulating material such as glass wool and a decorative surface material such as vinyl chloride. Reference numeral 4 denotes a presser packing provided on the periphery of the upper surface of the ceiling plate 3. Ceiling bars 1 are arranged finely on a part of the ceiling, and lighting fixtures 5 are arranged between them.

FIG. 2 shows the characteristic parts of this invention. The ceiling bar 1 consists of a vertical body part 1a, a ceiling receiving piece 1b extending horizontally from its lower end to both sides, and a square pipe-shaped hanging locking part 1c formed at the upper end of the vertical body part 1a. The ceiling receiving piece 1b of the ceiling bar 1 is covered with a cover 6, and the edge of the ceiling board 3 is placed on the upper surface of the cover 6. The upper end of the edge of the ceiling board 3 is pressed down with a presser packing 4.

The cover 6 is integrally molded, with a soft resin portion 6a covering the upper surface of the ceiling receiving piece 1b and a hard resin portion 6b covering the lower surface.
The soft resin portion 6a is made of hard vinyl chloride, and the hard resin portion 6b is made of hard vinyl chloride. Note that resin materials other than vinyl chloride may be used. The soft resin portion 6a has a surface in contact with the ceiling plate 3 as a corrugated uneven surface, and has a rising protrusion 6c formed at its tip. Furthermore, a striped pattern 7 (FIG. 9) is formed on the surface of the hard resin portion 6b that is visible from inside the room so that dirt and the like are not noticeable.

The presser packing 4 is made of rubber or the like, and includes an upper surface presser portion 4a that presses the upper surface of the ceiling board 3;
A pair of forked protrusions 4 provided along one side edge of the
b, 4c and an upper protrusion 4d. The upper protruding portion 4d is in close contact with the side surface of the hanging locking portion 1c of the ceiling bar 1. The tips of the forked protrusions 4b and 4C are in close contact with the side surface of the vertical body portion 1a, and the upper forked protrusion 4b is engaged with the lower surface of the hanging locking portion 1c. The forked protrusions 4b and 4c have a shape that can accommodate the cross-joint member 8 when the cross-joint member 8 is provided on the vertical body portion 1a of the ceiling bar 1. The lower forked protrusion 4c has a hook-shaped tip and engages with the lower surface of the cross joint member 8.

Although this embodiment has been described for the case where the ceiling bar 1 is inverted T-shape, this idea can also be applied to the case where the ceiling bar 1 is inverted L-shape.

FIG. 10 shows the structure of the peripheral edge of the ceiling. Reference numeral 9 denotes a ceiling bar serving as a peripheral edge, and the cross-sectional shape is approximately L-shaped. The outer surface of the ceiling bar 9 is covered with a cover 10, and the ceiling plate 3 is placed on the ceiling receiving piece 9a via a cushion 11 made of foamed resin in order to improve airtightness. Further, a backup material 12 is provided for backing up the presser packing 4. The cover 10 is provided with a surface streak pattern 13 (FIG. 12) on its lower surface.

With this configuration, the cover 6 to be attached to the T-shaped ceiling bar 1 is attached by covering the ceiling bar 1, which saves the effort of attaching it and improves workability. The cover 6 also has a soft resin portion 6a.
However, since there is a hard resin part 6b,
High airtightness is achieved with less misalignment and elongation. Furthermore, since the lower surface of the ceiling bar 1 is covered with the resin cover 6, even if the ceiling bar 1 is made of metal,
Heat conduction between the attic and the room can be made difficult to occur, and dew condensation on the lower surface of the ceiling bar 1 can be prevented. Furthermore, since the cover 6 is made of resin, it can be cut with a cutter or the like on site, which also improves workability.

The presser packing 4 has a shape capable of accommodating the cross joint member 8 provided on the ceiling bar 1, so that when the cross joint member 8 is provided, no unreasonable pressing force is applied to the presser packing 4. Deformation of the ceiling bar 1 and ceiling board 3 can be prevented. That is, in the conventional presser packing 24 shown in FIG. 15, when the cross joint member is protruded from the ceiling bar 21, the presser packing 24 expands by that portion, and if it is forced in,
Although the ceiling plate 22 and the ceiling bar 21 are deformed, the presser packing 4 of this embodiment does not have this problem.

[Effect of idea]

The airtight structure of the ceiling joint of this invention is easy to construct, provides reliable airtightness, improves heat insulation, and prevents condensation on the underside of the ceiling bar.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of an embodiment of this invention, Fig. 2 is an enlarged cross-sectional view of its main parts, Fig. 3 is a side end view of the presser packing, Fig. 4 is a front view of the same, and Fig. 5. 6 is a side end view of the cover, FIG. 7 is a front view of the cover, FIG. 8 is an enlarged sectional view of the cover, FIG. 9 is a partially enlarged sectional view of the cover, and FIG. 11 is a front view of the L-shaped ceiling bar, FIG. 12 is an end view of the same side, FIG. 13 is a partially enlarged sectional view of the cover, and FIG. 14 is a sectional view of the peripheral edge of the ceiling. It is a sectional view of a conventional example. 1...Ceiling bar, 1a...Vertical body, 1b...
Ceiling support piece, 3... Ceiling board, 4... Presser packing, 6... Cover, 6a... Soft resin part, 6b
...Hard resin part.

Claims (1)

[Scope of utility model registration request] A ceiling bar having a vertical body and a horizontal ceiling receiving piece extending from its lower end, and a portion of the ceiling bar that covers the ceiling receiving piece and covering the upper surface of the ceiling receiving piece is made of soft resin and covers the lower surface. An airtight structure for a ceiling joint portion comprising a cover made of hard resin and a ceiling material having an edge placed on the ceiling receiving piece via the cover.