JPH0686755B2 - Ceiling frame fittings for air filter installation - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention is used in a clean room to connect channel members of a grid-like ceiling frame suspended on a ceiling for installing an air filter to each other. It concerns a joint.

[Conventional technology]

A ceiling frame (53) formed in a lattice shape is hung on the ceiling of a clean room used in the semiconductor industry, electronics industry, precision machinery industry, pharmaceutical industry, hospital operating room, etc., and an air filter is mounted on it. (57) is installed. Further, the connecting portion between the air filter (57) and the ceiling frame (53) is filled with a sealing material (60) to prevent air from leaking.

4 and 5 show the joint (52) portion of the ceiling frame (53), and the joint (52) includes a main body (52a) having a cross-shaped groove, and a main body (52a). The channel member (51) is connected to the groove of the main body (52a).

A screw hole (55) is formed in the boss (54), and the ceiling frame (53) can be suspended on the ceiling by screwing a suspension bolt (56) suspended from the ceiling. .

Then, when it is necessary to suspend the lighting fixture, the partition, the hanging wall, the wafer transfer device, etc. from the ceiling, they are suspended from the channel material (51) of the ceiling frame (53).

In addition, reference numeral 59 in the figure denotes a filter frame (5
8) is the skirt provided on the channel material (5
It is designed to be inserted into the seal material (60) filled in 1).

[Problems to be solved by the invention]

The channel material (51) can be suspended if it is light such as a lighting fixture, but if a heavy material such as a partition, a hanging wall, or a wafer transfer device is suspended, the strength of the channel material (51) will increase. Since it is insufficient, there was a problem of distortion. Therefore, in order to suspend a heavy object such as that described above, it is necessary to suspend it directly from the ceiling with suspension bolts. Therefore, it is necessary to open a hole for inserting the suspension bolt in the channel member (51). . However, in this case, unless the caulking material is completely sealed, there is a problem that dirty air on the upstream side of the air filter may leak to the clean space side on the downstream side of the air filter. Furthermore, there is a problem that the strength of the ceiling frame (53) is reduced when a hole is formed in the channel material (51).

The present invention has been made to solve the above problems,
The purpose is to enable the suspension of a heavy object without the risk of air leakage.

[Means for solving problems]

Therefore, in the present invention, a cross-shaped groove is formed, and a screw hole for screwing the suspension bolt (8) is screwed into the center of the main body (3a) in which the channel material (2) is connected to each groove. A joint for an air filter installation ceiling frame in which a boss (6) formed in (7) is erected, and a screw hole (for screwing a stop screw (15) for suspending a suspended object (16) ( 13)
The boss (6) is coaxially formed with a non-penetrating portion (6a) so as not to penetrate the screw hole (7).

[Action]

The fitting (3) has a screw hole (7) for locking the hanging bolt (8).
The object to be suspended (16) is suspended by using the screw hole (13) of the joint (3). Since the non-penetrating portion (6a) is provided between the screw hole (7) and the screw hole (13), air does not leak from this portion.

Further, since the screw hole (7) and the screw hole (13) are formed coaxially, even if a heavy object to be suspended (16) such as a wafer carrier is hung on the joint (3), the joint ( It does not affect the channel material (2) connected to 3).

〔Example〕

 An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view showing a joint of a ceiling frame for installing an air filter according to the present invention. The ceiling frame (1) for installing an air filter comprises a channel material (2) whose upper part is open, a joint (3) for connecting the channel materials (2) to each other in a grid pattern, and further, a channel material (2). The joint (3) is fixed with rivets (4).

The joint (3) includes a body portion (3a) having a cross-shaped groove,
It consists of a boss (6) standing upright in the center of the main body (3a), and a screw hole (7) screwed into a hanging bolt (8) suspended from the ceiling is formed in the upper part of the boss (6). There is. A screw hole (13) is formed in the lower part of the boss (6), and a non-penetrating portion (6a) is provided between the screw hole (7) and the screw hole (13). There is. Incidentally, (5) is a projection for positioning when the channel material (2) is fitted.

The inside of the channel material (2) and the groove of the joint (3) are filled with a sealing material (9), and the sealing material (9) further has a skirt portion (12) of the filter frame (11) of the air filter (10). ) Is inserted to prevent air leakage.

The ceiling frame (1) formed in a lattice shape by using the joint (3) is hung on the ceiling by screwing a hanging bolt (8) into the screw hole (7).

Suspended objects such as hanging walls, curtains, and wafer transfer devices (1
To fix 6) to the joint (3), pass a stop screw (15) through the hanging member (14) fixed to the end of the suspended object (16), and screw holes ( 13) by screwing on.

When the object to be suspended (16) is not suspended under the joint (3), the screw hole (13) may be closed with a decorative screw (17) or the like as shown in FIG. .

〔The invention's effect〕

The joint of the present invention has the above-mentioned structure. When the joint (3) of the present invention is used, the weight of the suspended object (16) is connected to the joint (3) to the channel material (2). Since it does not take a long time, it has not been possible to hang it. Even heavy objects such as partitions, hanging walls, and wafer transfer devices can be suspended. Further, since the screw holes (7) and (13) of the boss (6) are provided with the non-penetrating portion (6a), dirty air leaks through the screw holes (7) and (13) to the downstream cleaning area. There is no such thing.

[Brief description of drawings]

FIG. 1 is a perspective view of a ceiling frame using the joint of the present invention. Fig. 2 is a sectional view taken along the line AA. FIG. 3 is a sectional view showing a state in which a cosmetic screw is screwed onto the boss. FIG. 4 is a perspective view of a ceiling frame using a conventional joint. Fig. 5 is a sectional view taken along the line AA. (2) ...... Channel material (3) ...... Joint (3a) …… Main body (6) …… Boss (6a) …… Non-penetrating part (7) …… Screw hole (8) …… Hanging bolt (13 ) …… Screw hole (15) …… Set screw (16) …… Hanging object

Continuation of the front page (51) Int.Cl. ⁵ Identification code Office reference number FI technical display location 7521-2E E04B 5/55 K

Claims (1)

[Claims] 1. A screw hole (7) into which a hanging bolt (8) is screwed, is formed at the center of a main body (3a) in which cross-shaped grooves are formed and a channel material (2) is connected to each groove. ) Is formed, the joint of the ceiling frame for air filter installation in which the boss (6) is formed upright, and the screw hole (13) into which the locking screw (15) for suspending the suspended object (16) is screwed The boss (6)
The non-penetrating part (6a) so that it does not penetrate the screw hole (7)
A joint for a ceiling frame for installing an air filter, wherein the joint is formed coaxially.