JPH0150738B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a fixing device for a ceiling inspection port installed for inspecting electric wires, various types of piping, etc. arranged inside the ceiling.

Conventionally, when installing a ceiling inspection port on the ceiling,
It was difficult to align (level) the ceiling surface and the bottom edge of the outer frame, and required a lot of skill and specialized skills. Under these circumstances, there has been a need for a method that allows even non-experts to easily align the ceiling surface and the lower end of the outer frame.

In addition, the method of attaching a ceiling inspection port to the ceiling was to first install a ceiling board on a lightweight steel frame base, then create an opening for the ceiling inspection port, fit the ceiling inspection port, and hang it from the ceiling.

However, since the workers who are engaged in the process of installing ceiling panels and the workers who are engaged in the process of installing ceiling inspection ports are generally different people, it is inconvenient to wait for the ceiling panel installation process to install ceiling inspection ports. It was inefficient.

Therefore, the present invention provides an L-shaped support piece having a horizontal portion into which a pressure bolt is screwed, a vertical portion formed by hanging down one side of this horizontal portion, and a screw hole formed in this vertical portion. , a locking piece provided on the vertical portion of the support piece in parallel with and facing the horizontal portion, and a locking piece screwed upward from below into the locking piece, the tip of which is installed on a lightweight steel base. By providing a fixing device for a ceiling inspection hole that is equipped with an adjustment bolt that can press the fixing device, it is possible to easily align the ceiling surface and the lower end of the outer frame. The purpose of this invention is to streamline the installation work of the ceiling inspection port to the ceiling before attaching the board to the lightweight steel frame base, and to improve the efficiency of the installation work.

Embodiments of the present invention will be described below based on the drawings. First of all, Fig. 1 shows an installation state diagram of a ceiling inspection port, in which 1 is an outer frame, which is installed on a lightweight steel frame base 8 (edge) by a fixing device 2, which is the main part of the present invention. It is fixed to a fixture 7 that hangs and fixes the ceiling inspection opening.

Therefore, the fixing device 2, which is the main part of this invention, will be explained in detail. In FIGS. 2 and 3, reference numeral 3 denotes a supporting piece of the fixing device, which is approximately L-shaped and consists of a horizontal portion 3a into which a pressure bolt 5 is screwed, and a vertical portion 3b hanging down on one side of the horizontal portion 3a. Ru. A screw hole 3c for fixing the outer frame 1 is formed in the lower part of the vertical portion 3b. Then, the locking piece 4 is formed by cutting out the wall surface of the vertical portion 3b and bending the cut piece perpendicularly to the vertical portion 3b and facing parallel to the horizontal portion 3a. A bolt-like adjustment bolt 6 is screwed upward from below into the locking piece 4 so as to press a channel-like fixture 7.

Although the locking piece 4 is formed by cutting out the wall surface of the vertical portion 3b of the support piece, it may be formed separately from the support piece and then fixed to the support piece.

In this way, the locking piece 4 is provided integrally with the support piece 3 and is fixed to the outer frame 1, so that it cannot slide on the outer frame 1. Therefore, the dimensions of the fixture 7 and the ceiling plate 9 are adjusted by means of an adjustment bolt 6 screwed into the locking piece 3. That is, by rotating the pressing bolt 5, the adjusting bolt 6 is positioned as downward as possible at this time.
When the outer frame 1 fixed to the support piece 3 is moved up and down to position it, a gap is created between the locking piece 4 and the fixture 7. This gap is compensated for by tightening the adjustment bolt 6 and pressing the fixture 7, and as a result, the fixture 7 is held between the locking piece 4 and the press bottle 5.

More specifically, the method for suspending and fixing the ceiling inspection port to the ceiling is as follows.

(1) Fix the vertical portion 3b of the support piece 3 to the outer frame 1.

(2) The lower end of the pressing bolt 5 screwed into the support piece 3 of the fixing device 2 is placed on the upper surface of the fixing device 7 installed on the lightweight steel frame base 8 to support the external suspension 1.

(3) Tighten the pressing bolt 5 (its tip collides with the top surface of the fixture 7) and lift the outer frame 1. This operation is continued until the lower end of the outer frame 1 reaches the level of the ceiling board 9.

(4) Next, tighten the adjustment bolt 6 screwed into the locking piece, press its tip against the lower surface of the fixture 7, and clamp and fix the fixture 7 between the adjuster star 6 and the pressing bolt 5.

FIG. 4 shows a modified structure of the adjustment bolt 6, which is made up of a push pin 10 inserted through the locking piece 4 and a spring 11 that accumulates pressure on the push pin 10 upward. By tightening the pressure bolt 5,
The push pin 10 is pushed downward (while the push pin 10 is in contact with the lower surface of the ceiling base), and at the same time the outer frame 1 is moved upward to perform level adjustment.
This eliminates the procedure for tightening the adjustment bolt 6 in FIGS. 1 and 2.

FIG. 5 shows an example in which the fixing device 2 of the present invention is applied to a ceiling inspection opening of joint type 12.

As described above, according to the present invention, since the fixing device is sandwiched between the pressing bolt and the locking piece and fixed during hanging, it is possible to hang the ceiling inspection opening before attaching the ceiling plate to the lightweight steel base. This can be done without waiting for the ceiling panel installation process as in conventional construction, and the construction period can be shortened. Moreover, since the ceiling board only needs to be stretched around the outer frame of the ceiling inspection opening, there is no need to misalign the opening position of the ceiling board, unlike in conventional construction (opening in the ceiling board and fitting it into the outer frame). Errors in opening dimensions can be eliminated.

In addition, since a pressure bolt is provided on the support piece, it is possible not only to make broad adjustments to the height (leveling) with the ceiling surface, but also to make further fine adjustments even after the adjustment has been made, and by simply adjusting the pressure bolt. Since the height with respect to the ceiling surface can be adjusted, even one worker can install the ceiling inspection port, and as a result, work efficiency is significantly improved.

Furthermore, since the fixing device is fixed using a pressing bolt and an adjustment bolt, the ceiling inspection opening does not fall down during use, nor does it float upward when the inner frame is opened or closed. There is.

[Brief explanation of drawings]

Figure 1 is an installation diagram of the ceiling inspection port seen from the ceiling, Figure 2 is an enlarged sectional view showing the main parts of the fixing device.
FIG. 3 is a perspective view of the fixing device, FIG. 4 is another embodiment of the adjuster, and FIG. 5 is a diagram in which the fixing device is applied to a joint type ceiling inspection port. 2...Fixing device, 3...L-shaped support piece, 3a...
...Horizontal part of the L-shaped support piece, 3b... Vertical part of the L-shaped support piece, 3c... Screw hole of the L-shaped support piece,
4... Locking piece, 5... Pressing bolt, 6... Adjustment bolt, 7... Fixing tool, 8... Light steel base.

Claims (1)

[Claims] 1. A horizontal part into which a pressure bolt is screwed, a vertical part formed by hanging down one side of this horizontal part, an L-shaped support piece having a screw hole formed in this vertical part, and this support piece. a locking piece provided on the vertical portion and facing the horizontal portion in parallel;
A fixing device for a ceiling inspection opening, which is equipped with an adjustment bolt that is screwed upward from below into this locking piece and whose tip can press a fixture installed on a lightweight steel base.