JPS61221450A - Production of inspection part in ceiling - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a method for manufacturing an inspection section in a ceiling for inspecting and repairing equipment such as wiring, piping, or air ducts provided inside the ceiling. It is something.

(Prior Art) An inspection section for inspecting wiring inside the ceiling is usually constructed by attaching a lid 4 inside an outer frame 3 to an inspection opening 2 formed in the ceiling l, as shown in FIG. It is manufactured by fixing the inspection port unit A, which is disposed near the inspection opening 2 in the ceiling l, and has a U-shaped cross section in the field edge receiver 5' for supporting the field edge 5 that supports the ceiling l. At the same time, a hanging metal fitting 7 is attached to this mounting support material 6, and the outer frame 3 of the inspection port unit A is fixed by this hanging metal fitting 7. .

[Problem that the invention seeks to solve]

In this case, as a support seat for the hanging fitting 7, a mounting support member 6 made of channel material having a substantially U-shaped cross section is used.
A side wall portion 6a of the mounting support member 6 for supporting the hanging fitting 7
Therefore, the mounting support 6 is arranged with its open edge 6b facing the side, but it generally reduces work efficiency to arrange and fix the mounting support 6 in such an unstable state. In addition to dropping the mounting supports 5', a mounting support 6 is also placed above the frame holder 5', so a large space for storing the mounting supports 6 and the hanging metal jL7 is provided in the ceiling. It has been pointed out that this method is inappropriate as a manufacturing method for the inspection part of the ceiling in recent years, when various types of equipment are being placed in the ceiling.
Furthermore, since an eccentric load is applied to the mounting support 6, causing twisting, it is necessary to firmly fix the mounting support to the edge support 5', which solves the problem of requiring troublesome work such as welding. It also had a

The present invention was made in response to these circumstances, and
It is an object of the present invention to provide a method for manufacturing an inspection part in a ceiling which has high manufacturing efficiency and requires a small installation space.

[Means for solving problems]

In FIG. 1, an inspection section manufactured by the method of manufacturing an inspection section in a ceiling according to the present invention is shown, and A in the figure indicates an inspection port unit configured to open and close an opening in an outer frame 3 using a lid body 4; Reference numeral 5 designates a field edge supported by a field edge support 5' (not shown) and disposed in the vicinity of the inspection opening 2 of the ceiling 1.

On this field edge 5, there is a substantially smooth surface 6C at least on the back side.
A mounting support forming a support member is provided to provide a support seat for the hanging fitting 7.

As shown in FIG. 1(b), the hanging fitting 7 has a holding piece 8 and a supporting piece 9 that protrude outward, and is fixed to the outer frame 3 of the inspection port unit A by appropriate means. be done.

In order to form an inspection part by fitting and fixing the inspection port unit A into the inspection opening 2, the tip of the retaining screw lO screwed into the holding piece 8 of the hanging fitting 7 and the smooth surface of the mounting support 6 are connected. The hanging fitting 7 and the mounting support 6 may be coupled by tightening the retaining screw 10 so that the mounting support 6 is held between the support pieces 9 that abut the support pieces 6C.

[Created for]

According to the method for manufacturing an inspection section in a ceiling according to the present invention configured as described above, the hanging fittings 7 are mounted on the mounting support member 6 supported by the edges 5 which are arranged in a relatively large number on the ceiling.
By fixing it to the roof edge bracket 5', the amount of protrusion into the ceiling can be dramatically reduced compared to the conventional manufacturing method in which the mounting support material 6 is further stacked and arranged on the field edge support 5'. be.

〔Example〕

An embodiment of the method of manufacturing an inspection part in a ceiling according to the present invention is shown in FIG. 2 and below.

In FIG. 2, reference numeral 5 indicates a field edge, which is supported by a field edge support 5' (not shown) at an appropriate position and is used to stretch the ceiling board 11 of the ceiling l.

The present invention uses this field edge 5 as a fixing material for the inspection port unit A.
The main feature is that an inspection part is formed in the ceiling l by attaching the channel-shaped mounting support 6 to the two side edges facing the inspection opening 2 of the ceiling l.
It is arranged with b facing upward.

In this way, by forming the mounting support member 6 from a channel material and arranging the smooth surface 6c of the back surface directly on the edge 5, it is possible to suppress the protrusion dimension to the back of the ceiling l, and also to reduce the length of the mounting support member 6. By arranging the member 6 with its open edge 6b facing upward, the mounting support member 6 can sit comfortably and the fixing strength can be increased.

In this embodiment, the mounting support member 6 is a long material such as an aluminum material, and as shown in FIG.
2 is supported and fixed on the field edge 5 by tightening with a fastening screw 13.

On the other hand, as shown in FIG. 4, the inspection port unit A consists of an outer frame 3 and a lid body 4 whose one end edge is locked to the outer frame 3 in order to open and close the opening of the outer frame 3. In this embodiment, the outer frame 3 is formed by four frame members 14, 14. . . . are formed into a substantially rectangular frame, and the lid body 4 is constructed by arranging a ceiling finishing material 16 such as a facing panel within an inner frame 15 which is similarly framed in a rectangular shape. , these outer frame 3 and the inner frame 15 of the lid body 4 are connected to the opening/closing device 1 as shown in FIG.
7, and a locking device 18 maintains the open lid state.

In this case, by making the opening/closing device 17 that connects the outer frame 3 and the inner frame 15 removable from the outer frame 3 as shown in FIG. 4(b), the outer frame 3 is first removed. Since it can be fixed to the inspection opening 2 in the ceiling l and then the lid body 4 can be attached to the outer frame 3, the efficiency of construction can be improved.

The outer frame 3 of the inspection port unit A configured as described above is
As shown in FIG. 5, after it is fitted into the inspection opening 2 of the ceiling 1 from below, as shown in FIG. It is fixed to the mounting support member 6 which is supported and fixed.

As shown in FIG. 7(a), the hanging fitting 7 has its upper end bent to have an oval shape in cross-section to form a holding piece 8, and its lower end bent to form a holding piece 8, which is attached to the outer frame 3. A first member 7a is formed with an engaging portion 21 that engages with an engaging groove 20 formed on the outer wall portion, and a second member 7a is formed in a substantially U-shape in plan view and has a support piece 9 protruding from its lower end. After fitting the outer frame 3, which is formed by aligning the members 7b and connecting them with screws 19 and to which one member 7a has been attached in advance, into the inspection opening 2 in the ceiling l from below, the support piece 9 is attached. Smooth surface 6C on the back side of the support member 6
The second member 7b is connected by contacting with the holding piece 8, and then the holding piece 8
The outer frame 3 of the inspection port unit A is fixed to the inspection opening 2 in the ceiling l by tightening the retaining screw 10 screwed into the inspection port unit A.

At this time, the outer frame 3 of the inspection port unit A is mounted by fixing the hanging fitting 7 by sandwiching the mounting support 6 between the supporting piece 9 of the hanging fitting 7 and the tip of the holding screw LO. Therefore, even if the retaining screw lO is strongly tightened, the support piece 9 acts as a stopper, and as shown in FIG. 7(a), the lower end 3a of the outer frame 3 and the ceiling plate 11 of the ceiling l
Even when the engagement dimension is small, it is possible to prevent the lower end 3a from biting into the ceiling plate ll and damaging the vicinity of the inspection opening 2 in the ceiling 1.

Note that in this embodiment, the engaging portion 21 of the first member 7a
A notch 22 is formed at the opposite corner of the
As shown in FIG. 7(b), after the first member 7a is tilted and inserted into the engagement groove 20 of the outer frame 3, it is easily locked to the outer frame 3 by rotating in the direction of the chain line. In addition, the installation height of the outer frame 3 can be adjusted by making the hole 23 into which the screw 19 is inserted into an elongated hole.

Furthermore, the hanging fittings 7 are not limited to those shown in FIG.
For example, as shown in FIGS. 8 and 9, the second member 7
b is formed into a U-shaped cross section, and its lower piece is used as the support piece 9, and an elongated hole 24 is bored in the upper piece, and the first member 7a is connected to the first member 7a through a retaining screw lO passing through this elongated hole 24. They may be connected together, or instead of being locked in the engaging groove 20 by rotating the engaging part 21, the engaging part 21 may be directly fixed to the side wall of the outer frame l using fastening means such as screws. (not shown).

Furthermore, the above explanation shows the most desirable procedure. For example, if the inspection port unit A is of a type that can be inserted into the inspection opening 2 from the back surface of the ceiling l, the inspection port unit A Of course, after the hanging fittings 7 and the mounting support material 6 are attached to the frame, the mounting support material 6 may be fixed to the field edge 5, and various other procedures may be used.

〔Effect of the invention〕

As is clear from the above explanation, in the past, field edge receivers have not always been provided at the part where the inspection section is to be formed, so a mounting support material is newly arranged with the field edge receiver as a fixing material, and this Although it was necessary to fix the hanging metal fittings to the mounting support material, according to the manufacturing method of the inspection part on the ceiling according to the present invention, the hanging metal fittings can be mounted supported by a relatively large number of fences arranged on the ceiling. Since it is fixed to the support material, the amount of hanging metal fittings etc. that protrude into the ceiling can be reduced.

Therefore, these mounting supports do not come into contact with various equipment placed in the attic, and an inspection area can be formed even when the space in the attic is narrow. Since there is no need to fix the mounting support material in an unstable state, the work efficiency can be dramatically improved, and the installation strength can be increased. In addition, as shown in Figure 1θ, the mounting support material that fixes the outer frame of the inspection port unit is supported by the edge that supports the ceiling board, so the edge may be bent. Even if this occurs, the mounting support material bends accordingly, thereby avoiding relative displacement between the lower end of the outer frame and the surface portion of the ceiling board. Therefore, as in the past, only the field edge holder or the mounting support fixed to the field edge holder is bent and a gap is formed between the outer frame of the inspection port unit and the ceiling board, or the outer frame causes the ceiling board to bend. can be prevented from being damaged.

[Brief explanation of the drawing]

Fig. 1(a) is a perspective explanatory view showing an inspection part manufactured by the method of manufacturing an inspection part in a ceiling of the present invention, and Fig. 1(b)
) is a perspective explanatory view showing the main part, Fig. 2 is a perspective view showing the state in which the mounting support is arranged, Fig. 3 is a sectional view of the main part, and Fig. 4 (a) shows the inspection port unit. A perspective explanatory diagram showing
Fig. 4(b) is a perspective explanatory view of the main parts showing the connecting portion between the inner frame and the outer frame of the inspection port unit, and Fig. 5 is a perspective explanatory view showing the state in which the inspection port unit is fitted into the inspection opening. Figure 6 is a perspective explanatory view showing how the outer frame of the inspection port unit is fixed using the hanging bracket, Figure 7(a) is a perspective explanatory view showing the hanging bracket, and Figure 7(b) is the attachment of the hanging bracket. A side view showing the condition,
Fig. 8 is a perspective view showing another modification of the hanging fitting, Fig. 9 is a sectional view of the main part showing the usage state of the hanging fitting shown in Fig. 8, and Fig. 1O is an inspection part manufactured according to this example. Fig. 11 is a sectional view showing a conventional example. A...Inspection port unit...Ceiling 2...Inspection opening 3...
・Outer frame 4... Lid body 5... Field edge
6...Mounting support material 6c...Smooth surface
7... Hanging bracket... Holding piece
9...Support piece 10...Press screw Applicant: Naka Technical Institute Co., Ltd. Figure 1 (a) Figure 4

Claims (1)

[Scope of Claims] A mounting support member forming a substantially smooth surface at least on the back side is disposed on a field edge disposed in the vicinity of an opening formed in the ceiling, supporting both ends of the mounting support member, and outwardly Attach a hanging metal fitting formed by protruding a holding piece toward the side and a supporting piece that supports the back side of the mounting support member to the outer frame of the inspection unit, and attach the holding piece of the hanging metal fitting to the outer frame of the inspection unit. 1. A method for manufacturing an inspection section in a ceiling, which comprises placing a threaded presser screw on a mounting support, and then tightening the presser screw to fix the hanging fitting to the mounting support.