JPS5961657A - Ceiling structure used in building - 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 The present invention relates to a ceiling structure used in a building, and more specifically, a ceiling frame consisting of a large number of main e-beams and cross beams assembled together in a grid, Relating to an improved ceiling structure by assembling access doors in appropriate grids of the framework.

In recent years, exposed construction methods,
Concealed construction methods and construction methods based on drywall construction methods are becoming popular.

The ceiling frames of the ceiling structures created by these construction methods all consist of a large number of main beams with 7 flanges and a large number of cross beams with flanges combined in a lattice pattern.
-In the ceiling structure using the exposed roof method, the ceiling boards that make up the ceiling wall are fitted into a grid and placed on the flanges of the main beam and cross beam. Ra 几, 'f, 7. - In the ceiling structure using the concealed construction method, the ceiling boards constituting the ceiling wall are placed on the grid by inserting the flange of the main beam into the kerf formed on the end surface of the ceiling board. In construction, the ceiling boards that make up the ceiling wall are nailed or screwed to the flanges of its main O-beams and cross beams in a grid. In addition, in a ceiling structure using the exposed method, the ceiling board can be removed, so access doors generally do not need to be installed.In a ceiling structure using the concealed method, access angles and・Using a hook,
As with exposed roof construction, access doors have generally not been used because the ceiling boards can be removed by attaching them to the main beam. However, when such a ceiling board is removed, the ceiling board may be damaged or soiled during removal and fitting.

I didn't like it.

Also, in the ceiling structure using the drywall method.

Since the ceiling board cannot be removed, an access opening is opened into the ceiling surface at an appropriate position in the ceiling structure, and an access door is placed in the access opening. In that case, considering the amount of the access door, the access door should be fixed to the ceiling slab with wire fasteners; Ruka, main
The attachments that tie down to the beam are attached to the frame channel.

The installation of such an access door has been extremely difficult to construct. Particularly when a frame channel is suspended directly from a ceiling slab with hanger wire and an access door is attached to the frame channel, the relationship between the access door and the ceiling wall may deteriorate over time. There was a difference in level between the two, which was not desirable.

It is an object of the present invention to easily adapt to various types of ceiling structures such as exposed construction method, concealed construction method, dry wall construction method, etc., and to provide an access opening to a suitable grille of the ceiling framework, and to - a ceiling structure in which the door is assembled to the ceiling framework, the access door reinforcing the ceiling framework at the access opening;
The horizontal and vertical deflection of the ceiling frame when opening and closing, +h L, allows the access door to open and close smoothly, reduces the number of parts needed to assemble the access door to the ceiling frame, and improves the access door. - Installation for doors simplifies construction, shortens the construction period, and provides a ceiling structure that can be used in buildings where ceiling finishes are preferred.

To solve these problems, the ceiling structure used in the building of this invention consists of a number of seven-lunged main walls bridged at predetermined intervals between the wall moldings.
In the direction orthogonal between the beam and the main beam, so that the ceiling frame is free.

Then, it is assembled at a specified interval between the main beams,
r: A number of flanged cross beams and appropriate grids of the ceiling frame are assembled to the ceiling frame so as to provide access openings f'L 7
C. a ceiling wall, at its access opening, fixed along the webs of at least one of its main beams and its cross beams opposite each other, - a pair of auxiliary beams, a fixed frame; It consists of a movable frame attached to the fixed frame and a cover plate assembled to the movable frame, and the access door is fixed to the auxiliary beam at the access opening. A plurality of attachments are comprised of fixtures that secure the frame and attach the access door to the ceiling framework.

An important convenience provided by the ceiling structure used in the building of the present invention constructed in this way is that the ceiling structure to which the access door is installed can be used in various construction methods such as exposed construction, concealed construction, and dry wall construction. can be easily applied to construction methods, and in its access opening,
The ceiling frame to which the access door 2 is attached is reinforced by its auxiliary beam and the M frame of the access door.
When the access door is suddenly opened and closed, the horizontal and vertical deflection of the ceiling frame due to the load of the access door is prevented, and the waving phenomenon, i.e., vibration, of the ceiling is prevented. Additionally, fewer parts are required to assemble the access door to the ceiling framework, making installation of the access door simple, easy, and extremely practical.

Therefore, this invention certainly provides the reinforcement structure for installing the access door by the auxiliary beam R and the access door.
It further promotes the implementation of ceiling structures using concealed construction methods and dry wall construction methods, and is useful and very suitable for ceilings in various buildings, especially wide ceilings inside buildings.

Below, the drawings will be explained about a preferred specific example of the ceiling structure used in the building according to the present invention. Examine and explain.

1 to 6 partially show ten specific examples of ceiling structures used in buildings according to the invention - applied to ceilings of office buildings.

The ceiling structure IO is based on the exhorst construction method, and is installed in a rectangular manner on the wall of the building. bridged at intervals, hanger wires at appropriate locations,
Suspended from the ceiling slab by a hanger (not shown) or the like, the main body with multiple flanges is
In the direction orthogonal to the main beam 11, a - is predetermined between the main beam 11 and between the main beam 11 and the wall molding so as to form a ceiling frame. A large number of flanged cross beams 12 are connected with holes spaced apart from each other, and the main beam 11 is connected to the main beam 11 in the ceiling framework so as to provide access openings 18 at predetermined positions, i.e., the appropriate grids of the ceiling framework. and a large hole ceiling wall 13 resting on the 7 lunges 17 of the cross beam 12
and an auxiliary beam 14 which is fixed by screws 22 to the webs 23 of the pair of main beams 11 which are passed around each other, and whose main and cross beams 11.12 are fixed at their access openings 18. Attach the outer flange 30 to the lower surface of the flange 17, press the flange 30, and attach the + auxiliary beam 14.
and fixed to the auxiliary beam 14.
The four installations include fifteen access doors attached to the ceiling framework by means of fixtures 16.

The main beam 11 is made of a long T-shaped cross section formed by kerol forming of a strip of steel or stainless steel, or an extruded section of aluminum alloy. )? It can be pieced together to fit the size of the ceiling.

As with the main beam 11, the cross beam 12 is roll-formed from a strip of steel, stainless steel, etc.
or extruded from aluminum alloy, the main
It consists of 11 beams and a T-shaped cross section with a length f' corresponding to the span between the main beam 11 and the wall molding tonneau, with twist clips and hook clips (not shown) at both ends. Such? In addition, we have installed the main beam 11 and the wall molding.

The ceiling wall 13 is made up of a large number of ceiling tiles 19Y whose main and cross beams 11 are machined to predetermined dimensions.
．． 12 flanges 17iJ1 and cell beams 11.1
2 and the flange of the wall molding.

Of course, the ceiling tiles are 191"m long, the opening 18 of the access battle is 1/1m, and they are not placed in the predetermined grid.
do not have.

The ceiling tiles 19 can be selected from a variety of materials depending on the specifications, such as heat-resistant fibers? Replaced with mixed cement board, wood board, sound absorbing material mixed board, etc.

A pair of auxiliary beams 14 are provided with main beams facing each other.
formed from a cross-sectional channel-like profile of a length slightly shorter than the span between the main beams 11, so as to be attached between the main beams 11; , is firmly fixed to the main beam 11 by a plurality of screws 22, and prevents movement of the main beam 11 that would widen the span against external forces.

Furthermore, in order to ensure that the grille of the ceiling frame to which the access door 15 is attached can maintain its shape against external forces, the auxiliary beam 140 should be constructed with angled sections at both ends. fold n
It is desirable to form a series of connecting arms at both ends of the arm. That is, so that the auxiliary beam 14
is constructed, when the auxiliary beam 14 is secured to the web 23 of the main beam 11 with the screw 22, the connecting arm is secured to the web 23 of the cross beam 12 with the screw 22JJ. , and the corners of the grid are reinforced.

The auxiliary beam 14 also forms two support arms 24 for fixing a mounting tool 16, which is cut and raised from the upper flange of the section to attach the access door 15Vc.

The support arm 24 has an elongated hole 25 formed at its upper end, through which the headed screw 58 passes.

The auxiliary beam 14 is further formed from roll-formed steel 2
Of course, it is also possible to press.

Furthermore, it is also possible to integrate the support arm 24 of )C by fixing it to the web 21 through a suitable notch in the upper flange sY of a section or steel strip.

The access door 15 has its main and cross beams 11. ．． An outward facing flange 30 on the bottom surface of the flange 17 of 12? In addition, a fixed frame 26 is fitted into the access opening 18 and extends 7", and a frame opening 2 of the fixed frame 26 is configured to be rotatably assembled to the fixed frame 26.
A movable frame 27 disposed at 9, a cover plate 31 fixed to the movable frame 27 with a stopper so as to close the frame opening 29 of the movable frame 27, and an access opening 18 thereof are rotated with each other. The auxiliary beams 14 are threaded onto the webs 23 of the pair of main beams 11, and the outward flanges 30 attached to the lower surfaces of the flanges 17 of the pair of main beams 11 cooperate with each other. (C, 7 fixed frames 26 are formed on the auxiliary beam 14, and 4 mounts to be attached to the constant support arm 24 are attached to the fixture 16 and the left and right sides of the fixed frame 26. It consists of a pair of bearings 32 that protrude and a pair of shafts 33 that protrude from the left side surface 1C of the movable frame 27 so as to be rotatably supported by the bearings 32. Then, in the assembled body of the movable frame 27 and the cover plate 31, that is, in the closed position of the cover, it is locked to the fixed frame 26 by the Gremont lock 50, and the Gremont lock 50 is unlocked. is rotated downward and opened by bearing 32 and shaft 330 means.

The fixed frame 2611 is a rectangular frame made of four fixed pieces cut to a predetermined length from a long aluminum alloy extruded frame section. That is, the fixed frame 26 includes a frame web 34 and an outwardly directed flange 30 integrally formed at the lower end of the frame web 34 to define a frame aperture 28, and further includes an inset groove 36. 37 and 38, and the fixed frame 26 is made by using four fixed pieces cut to a predetermined length from a long frame shape using a framework device and using four steel plate corner pieces. Assemble ■Teraru.

As with the fixed frame 26, the movable frame 27 is constructed in a rectangular shape from four movable fragments cut to a predetermined length from a long aluminum alloy extruded frame section. That is, the movable frame 27 includes a frame web 39 and a transverse flange 41 integrally formed at the lower end of the frame web 39 so as to define the frame opening 29, and further includes a recess bay 42,43. The movable frame 27 is assembled using four movable fragments cut to a predetermined length from a long frame section in a framework device using four steel plate corner pieces.

The cover plate 31 is made of a ceiling tile 19, and the frame opening 29 of the movable frame 27 is closed, and the movable frame is mounted on the inner side of the facing flange 41 using a plurality of fasteners and screws. It is fixed at 27.

The pair of bearings 32 has a groove 44 and a bearing surface 45.
The upper opening 46 of the groove 44 bears the upper opening 46 of the groove 44.
, the bearing has a pair of slight bulges 47 formed in the surface 45.

The bearing 32 is thus formed with a bulge 47 in the surface 45, and by narrowing the upper opening 46 of the groove 44, the bearing 32 can be snapped into and removed with a snap. I have to.

The bearing 32 also has a plate-like bracket 4 at one end.
8 is integrally formed, which not only makes it easy to attach to the fixed frame 26, but also connects the other end to the frame web 39 of the movable frame 27.
The horizontal flange 410 of the lower movable frame 27
It is used as a flange stopper on the other end, and also as a stopper for the movable frame 27 on the other end.

The bearing 32 and the bracket 48 are integrally made of polyamide/fjj Iis, full resin, etc.
Although it is made of Japanese cedar wood, it is also possible to form it from a bearing base metal.

Do the pair of shafts 33 have an outer diameter in advance? A tapered sleeve is formed at one end, and a corner piece 3f is formed for the movable frame 27.
That sleeve in the pin hole? The tip of the sleeve is prefixed to the corner piece by caulking.

Therefore, the shaft 33 is attached to the movable frame 27 when the movable frame 27 is framed by the corner piece and the unswaged corner piece of the shaft 33.

The Gremont lock 50 is arranged in a movable frame 27 so that the tip of the lock 5 can be protruded from the movable frame 27 to the fixed frame 26 or retracted from the fixed frame 26 to the movable frame 27.
A pair of locking rods 52 guided by the Y guide 51, a pair of rod receivers 53, and a movable frame 27 arranged on the fixed frame 26 so as to receive the tips of the locking rods 52. It is composed of an operating plate 54 which is rotatably held in the holder and connected to the lorido 52, and a crank shaft 55 which rotates the operating plate 54 from the outside lft1+ of the lid. It is well-organized.

Further, the Gremon lock 50 can be replaced with other commonly used locking devices.

As can be seen from FIG. 2, the mounting tool 16 includes a press plate 56 pressed from a steel plate and an auxiliary beam 14 that is fixed to the web 23 of the main beam 11. The fastening is comprised of a headed screw 581 and a wing nut 59 which are fixed to the support arm 24 formed in the.

As shown in FIGS. 5s and 6, a plate-shaped hook 60 that is rotated and fitted into the fitting groove 36° 37 of the fixed frame 26 is attached at the lower end, and the plate-shaped hook 60 is extended in the length direction. Each of the bending arms 57 has an upper end 1c with a long hole 61Y.

The frame 60 consists of a stepped part 62 and a cut-and-raised part 63, the vertical length of which is set to match the distance between the fitting grooves 36 and 37, and the horizontal width of the stepped part 62 and the cut-and-raised part 63. Groove 36.3
The distance between the ribs of No. 7 is shorter than the distance between the ribs of No. 7, and the upper and lower corners on one diagonal tatami are made circular so that the hook 60 can be fitted into the fitting grooves 36, 371... while rotating. In this way, the press plate 56
'a=Easy to attach to the fixed frame 26 (while at the same time making it possible to firmly identify it).

Next, as mentioned above, to describe the construction of the structure flX and the rough ceiling structure lO, we will first follow the layout plan.

Use concrete nails to attach wall molding to the concrete walls of a room, and also a number of wire fasteners to the ceiling slab of that room? Appropriate rdI@
Then, hang the hangers and wires from the wire fasteners.

The main beam sections are then spliced to the desired length with end couplings. : A large number of main
Beam j17 wall moldings are bridged at predetermined intervals, aligned in the same plane, and tied to the main beam IIY hanger wires, and one at each end? Screw the screws into the wall molding.

Next, in the direction orthogonal to these main fist beams 11, these 11 main beams and Hiso's main beams are
A large number of cross-beams 12 are bridged and twisted at predetermined intervals between the beam 11 and the wall molding.
Connect the cross beam 12 to the main beam 11 with clips and the wall molding with screws, and cooperate with the main beam 11 and the wall molding to create a lattice ceiling frame? Configure.

As such, wall molding, main [phase]
Once the ceiling framework has been assembled to the ceiling by beams 11 and cross beams 12.

A large number of appropriately shaped ceiling tiles 19? main beam 1
1 flange 17 and main beam 11 flange 17
between the flange 17 of the cross beam 12 and the cross beam
between the main beam 11 and the flange 17 of the beam 12;
between the flange 17 of the cross beam 12 and the wall molding, and between the flange 17 of the cross beam 12 and the wall molding.
3 formations.

Of course, in the ceiling framework, certain grids are omitted with ceiling tiles 19 and access openings are formed.

Next, at the access opening 18, the pair of auxiliary beams 14 are connected to the web 23 of the main beam 11.
Attach the auxiliary beam 14'2 to the main beam 11 with screws 22.

The auxiliary beam-14 is attached to the ceiling frame.

Thus, once the auxiliary beam 14 is fixed to the ceiling framework by the screws 22, the access door 19-door 15. That is, the movable frame 27 is removed in advance, and the four mounting fixtures 16 are fitted into the access openings 18 of the fixed frame 26 in the predetermined positions, and the outward flanges 30 are inserted into the main and cross beams 11. The pressure is attached to the lower end of the flange 17 of .12.

Next, while supporting the fixed frame 26 in the access opening 18 in this way, the attachment is carried out by inserting the headed screw 58 through the elongated hole 61 of the press plate 56 of the fixture 16, and then attaching the support arm of the auxiliary beam 14 to the support arm 14. The fixing frame 26 is screwed at four locations using wing nuts 59 passed through the holes 25 formed in the fixing section. As a result, the flange 17 of the main beam 11 is sandwiched between the auxiliary beam 14 and the outward flange 30, and the fixing frame 26 is fixed to the ceiling frame.

Next, while placing the movable frame 27 to which the cover plate 31 has been attached in advance into the frame opening 28 of the fixed frame 26, the shaft 33 is inserted into the bearing 3.
2, the movable frame 277al is rotatably assembled to the fixed frame 26, and then the movable frame 27 is rotated upward to close the frame opening 28 of the fixed frame 26. In the state, the movable frame 27. That is, the lid is fixed to its fixing frame 26.
to lock.

In this way, the ceiling structure 10 is constructed on the ceiling of one room, but the construction is also carried out in various ways depending on the conditions of the one room, in other words, depending on the site.

Figures 7 and 8 partially show a modified embodiment 70 of a ceiling structure for use in buildings according to the invention applied to the ceiling of an office building.

The ceiling structure 70 is of the exposed construction method and, compared to the ceiling structure 10 described above, has an auxiliary beam 14'a? in its access opening 18 and is fixed to its main beam 11. Access through door 15
The structure to be assembled into ' has been modified.

The access door 151-t is fitted into the access opening 18 and has an outward facing 7 7-gee 30 on the flange 17-t of the main forget-and-cross beam 11,1.2.
Place the fixed frame 2 in the access opening 18.
Position 6.

It is located like this. The auxiliary beams 71 for assembling the access door 15 face each other.
A plurality of bending edges 9 are integrally pressed from a steel plate with a length slightly shorter than the span between the main beams 11 and are attached between the beams 11 and have an irregular shape on the upper end side. It is attached to the main beam 11 by 72 and fixed to the ceiling framework.

The auxiliary beam 71 is connected to the access opening 1
8, the lower end side is the web 23 of the main beam 11
and its lower end is pressed onto flange 1 of main beam 11.

In addition, a breath plate 56 of the tool 16 is attached to the upper end side.
a support arm 73 that is fastened together with the support arm 73;
The main beam 11 includes bending hooks 72 which are formed at appropriate intervals in the length direction between the main beams 11 and are snap-engaged with the bulbs of the main beam 11.

Figures 9 and 10 partially show a further modified and defined embodiment 80.81 of a ceiling structure for use in buildings according to the invention applied to the ceiling of an office building.

The ceiling structure 80 is based on the concealed construction method.
The structure for assembling the ceiling tiles 19 to the ceiling framework is different from the ceiling structure 101c using the exposed construction method described above. That is, the ceiling tile 19 has a kerf 20 cut into both sides S and both end faces, and the flange 17 of the main and cross beams 11, 12 is inserted into the kerf 20 of the ceiling tile 19.
Ribbed splines (not shown) between the side kerfs 20 that abut each other? It is inserted and attached to the ceiling frame to constitute the ceiling wall 13.

Furthermore, the ceiling structure 81 is constructed using the dry wall method, and is different from the ceiling structure 10 using the exposed method described above in the structure in which the ceiling tiles 19 are assembled to the ceiling framework. That is, the ceiling tiles 19 are fixed to the flanges 17 of the main and cross beams 11 and 12 with nails or screws to form 13 ceiling walls.

These ceiling structures 80 and 81u use the parts of the ceiling structure 10 mentioned above, so do the corresponding parts have the same symbols? Attached are their explanations (further).

The construction of the ceiling structures 80, 81 is carried out in substantially the same manner as the ceiling structure 10, so the explanation thereof will also be omitted.

Figures 11 to 20 show the ceiling structures 10-60°70.80 of the present invention shown in Figures 1, 2, 7, 9, and 10.
Auxiliary beam 1 modified for use in and 81
4,90. Zoo, 120, 140-150 and 16
ov is shown, +1. The auxiliary beam 90 shown in FIGS. The attachment fixed to the support anim 92 is fastened together with the clamp plate 93 by means of the fixture 16, and the main beam 1lVC is attached and fixed to the ceiling frame.

Elongated holes 94 are formed on both ends of the auxiliary beam 90 to accommodate the head screws 58 for tightening the press plate 56 together. Of course, the elongated hole 94 is elongated in the vertical direction, that is, in the vertical direction, so that the mounting position of the press plate 56 of the tool 16 can be changed in the vertical direction.

Also, the auxiliary beam 90 is in the middle.

The folding leg 91 and the support arm 92 are bent in different steps in the length direction, and the folding leg 91 is attached to the web 23 of the main beam 11 at its access opening 18 and is screwed.

The stepped part 95 on the valve of the sono main beam 11
It is convenient to hook the beam and attach it to the main body or beam 11.

That auxiliary beam 90? , the access meeting opening 1
8, the clamp to be attached to the main beam 11.
The plate 93' is connected to the web 2 of its main beam 11.
3 and a bent bead 96 fitted into the pulp, and a headed screw 58 and a wing nut 59.
Accordingly, when the fixture 16 is fastened together with the press plate 56 to the support arm 91, its bending bead 96 cooperates with the stepped portion 95 of the auxiliary beam 900.
Main beam 11 valve of the USSR? It is designed to be clamped and fixed.

The auxiliary arm 100 shown in FIGS. 13 and 14 is integrally pressed from a steel plate.

For installation, a clamp 11.0, a threaded rod 1117 receiver, and a support arm toty with a tab are attached to the main beam 11 with screws 102 and fixed to the ceiling frame.

Of course, the auxiliary beam 100 is attached to the main beam 1 at its access opening 18 to receive the lower end of the clamp threaded rod 111 of the mounting fixture 110.
support arm 101 with its lip on the flange 17 of 1;
It is mounted on a Y, attached to the web 23 of the main beam 11, and fixed with a screw 102.

When using this auxiliary beam 100, the mounting tool 110 is as follows:
At the access opening 18, one fixed frame 26 is pressed so that the outward flange 30 is pressed from below against the lower surface of the seven flange 17 of the main and cross beams 11 and 12. This is something that is lifted to Hijikata, and has a folding arm 11.
-f on the upper end side of 27aj.

Notch tongue 113 inserted into fitting groove 38? Also provided with 14 plate-shaped hooks on each lower end side.

The first screw hole of the clamp/threaded rod 1.11] 15
'f is formed on the bent arm 112.

The clamp threaded rod 111 is connected to the bending arm 112
The support arm 10 with a lip is screwed into the screw hole l15.
1 has its tip inserted into the receiver. Therefore, one fixed frame 2
6 can be lifted downward by the clamp/threaded rod 1 and press the outward flange 30 of the fixed frame 26 against the underside of the flange 17 of the main and cross-beam 11.12, thereby fixing the fixed frame 26 to the ceiling framework. I have to.

The auxiliary beam 120 shown in FIGS. 15 and 16 is integrally pressed from a steel plate and includes a folding support arm 121 into which the clamp/screw head 131 of the fixture 130 is screwed. It is configured to be attached to the main beam 11 with screws 122 and fixed to the ceiling frame.

Therefore, this auxiliary beam 120 is mounted above the bending support arm 121 into which the lower end of the clamp/threaded rod 131 of the tool 130 is screwed, and its access opening 1
It is attached to the web 23 of the main beam 11 at 8 by screws 122.

In addition, when using this auxiliary beam 120, the attachment is performed using the tool 13.
0j”t, for its access opening 18,
This is a plate that lifts the 1M fixed frame 6 upward so as to press the outward flange 30 from below against the lower surface of the flange 17 of the main and cross beams 11 and 12, and has a notched tongue 132 that is inserted into the fitting groove 38. The bent arm 134 is provided with a cutout hole 135 at the lower end of the hook 133 and the upper end of the bent arm 134, and the distal end thereof is provided on the bent support arm 121 of the auxiliary beam 120. Insert the screwed clamp-threaded rod 131 into the clamp-threaded rod 131.
A receiver formed near the upper end of the arm 1 is adapted to be received by placing the bent arms 134 on a portion 136.

Therefore, as shown in FIG.
By rotating twice, the fixed frame 26 is lifted upward, and its outward flanges 30 forcefully press the lower surfaces of the flanges 17 of the main and cross beams 11 and 12, fixing the fixed frame 26 to the ceiling framework. ing.

The auxiliary beam 140 shown in FIG. 17 is formed with a bent hook t4iv on one upper end side, and is snap-engaged with the bulb of the main beam 11 at the access opening 18, and the lower end side thereof is formed with a bent hook t4iv.・Beam 1
The web 231 of No. 1 is attached, and the upper surface of the flange 17 is fixed.

In the case of using this auxiliary beam 140, the IC (tl) is attached to the access C door 15 and the ceiling frame in cooperation with the auxiliary beam 140, and the mounting tool 142 is the clamp screw 14.
3, the fixed frame 26 of the access door 15
The clamp screw 143 is inserted into the upper surface of the flange 17 of the main beam 11 in the access opening 18 through the hole 144 previously formed in the web 23 of the main beam 11, and then inserted into the auxiliary beam 140. The fixing frame 26 is fixed to the ceiling frame by screwing it into the screw hole 145 provided in the fixing frame 26 and tightening it so that its tip is firmly received by the web 34 of the fixing frame 26.

The auxiliary beam 150 shown in FIGS. 18 and 19 has its lower end? As if pressing against the soil surface of that 7 lunge 17,
It is press-worked from a band-shaped steel plate, and has a longitudinally extending bent bead 153) k formed in the middle, and screw holes 152 are formed at both ends of the bent bead 153, respectively.

In addition, a bending hook 154 is formed at the upper end of the auxiliary beam 150 to be hooked on the main beam of the main beam.
l/Fvc In order to engage the hooks in a snap-like manner, cut and raised tongues 155 facing the bending hooks 154 are formed on both end sides.

In the case of such an auxiliary beam 150, its attachment is formed in a clamp screw 151.

The fixed frame 26 is placed on the upper surface of the flange 17 of the main beam 11 in the access opening 18, and the clamp screw 151'f is inserted through the hole 156 previously formed in the web 34 of the fixed frame 26, and the tip is assisted. The receiver is inserted into a screw hole 152 of the beam 150, and its fixing frame 26 is fixed to the ceiling frame.

The auxiliary beam 160 shown in FIG. 20 is attached to the web 23 of the main access beam 11 at its access opening 18, and has a bent leg 161 at its lower end that presses against the soil surface Y of the flange 17 of the main beam 11. has been done.

In the case of using such an auxiliary beam 160, the attachment tool 62 includes a clamp screw 163 and a plate 164 to attach the clamp screw 163 to the fixing frame 26.
The plate (1+; 4) is attached by inserting its upper and lower ends into the fitting grooves 36, 37 of the fixed frame 26, and is provided with 165 screw holes for attaching 163 clamp screws.

Its installation is done using a tool 162 u- its clamp screw 163 and a hole 166 previously opened in the web 34 of the fixing frame 26.
(Insert and play) Screw it into the screw hole 165 of 164, and the tip of it? The auxiliary beam 160 attached to the main beam 11 is tightened so as to be firmly supported, and the auxiliary beam 160 and the fixing frame 26 are simultaneously fixed to the ceiling frame.

From the above, when compared with building ceiling structures that have already been proposed and used, the ceiling structure used in buildings of the present invention has a ceiling framework that is passed between wall e-mouldings and a large number of hangers. A ceiling wall consisting of a number of main beams and cross beams suspended from hanger rods is assembled to the ceiling framework in such a way as to provide appropriate grid access openings for the ceiling framework. , a pair of auxiliary beams are fixed along the webs of at least one of the pair of main beams and the pair of cross beams facing each other,
The access door consists of a fixed frame, a movable frame and a cover plate,
For multiple installations, the tool is R in the access opening and the fixed frame? Main and cross e-beams (both are fixed to auxiliary beams fixed to one side, and the access door is fixed to the ceiling framework, so
In the ceiling structure used in the building of this invention.

The adaptability to various ceiling structures such as exposed construction method, concealed construction method, and dry wall construction method is greatly improved.At the access opening, the grid of the ceiling frame is reinforced by the auxiliary beam and fixed frame, and the access opening is improved.・When the door is opened and closed, horizontal and vertical deflection of the ceiling frame due to the load of the access door is prevented, resulting in the waving phenomenon of the ceiling, i.e.
Vibration is prevented, and the number of parts to be assembled into the E7C1's access door and ceiling frame is reduced.

The access door is extremely easy to install and.

Overall, ceiling construction is simple and easy.

It is easier to install, shortens the construction period, makes the ceiling lighter, and improves the ceiling finish.

Be extremely practical.

From the specific example of this invention described above with reference to one drawing, it will be understood that various modifications and changes will be easily made by those having ordinary knowledge in the technical field to which this invention pertains. can be.

Furthermore, the structure of this invention could easily be replaced by an embodiment essentially the same as this invention, which satisfies essentially the same tasks as that invention and achieves the same effects as this invention.

[Brief explanation of drawings]

Fig. 1 is a partial perspective view showing a specific example of a ceiling structure used in a building according to the present invention by the Sareta exposed construction method applied to the ceiling of an office building. FIG. 3 is a perspective view of the auxiliary beam used in the ceiling structure shown in FIGS. 1 and 2; FIG. 4 is a perspective view of the auxiliary beam used in the ceiling structure shown in FIGS. q) A partial perspective view showing the ceiling structure to be explained; Fig. 5 is a perspective view of the mounting fixture used in the ceiling structure shown in Figs. 1 and 2; Fig. 6 is a perspective view of the mounting fixture used in the ceiling structure shown in Fig. 5; Installation? FIG. 7 is a sectional view showing a modified access door attached to a ceiling structure used in a building according to the present invention, and FIG. 8 is a cross-sectional view of the ceiling structure shown in FIG. 7. FIGS. 9 and 10 are cross-sectional views showing a modified example of the ceiling structure used in the building of the present invention, and FIG. is a partial side view of the deformed auxiliary beam in condition; FIG. 12 is an exploded perspective view of the auxiliary beam and mounting fixture shown in FIG. 11, FIG. 13 is a partial side view of the modified auxiliary beam in the installed state, and FIG. 14 is the view shown in FIG. 13. FIG. 15 is a partially exploded perspective view of the auxiliary beam shown in FIG. FIG. 17 is a sectional view of the deformed auxiliary beam in the installed state; FIG. 18 is a partial view of the deformed auxiliary beam in the installed state. FIG. 19 is a perspective view of the auxiliary beam shown in FIG. 18;
FIG. 20 is a partial side view of the modified fixed auxiliary beam in the installed condition; 10, 70.80.81...Ceiling structure, 11...
Main beam, 12...Cross beam, 13...
・Ceiling wall, ] 4.7] = 90.100.12
0-1.40, 150.160...Auxiliary beam-j5
...access-door, 16.110.130-1
42.1.55゜1.62...Mounting tool, 18...
Access opening, 19...ceiling tile, 24
...Support arm, 26...Fixed frame, 27...Movable frame-31...Lid plate, 50...Gremont lock, 56...
・Brace e plate, 57...Folding arm, 58・
...head screw, 59...nut.

Claims (1)

[Claims] A plurality of flanged main beams are mounted at predetermined intervals between the wall moldings, and in a direction perpendicular to the main beams so as to constitute a ceiling framework. 'cfL et al. assembled at predetermined intervals between the main beams, fL 7j a number of flanged cross beams and the appropriate grid of the ceiling framework? a ceiling wall assembled to the ceiling framework so as to form an access opening; and at least one web of a pair of said main beams and a pair of said cross beams facing each other in said access opening; It consists of a fixed pair of auxiliary beams that are fixed together, a fixed frame, a fixed movable frame assembled to the fixed frame, and a large hole cover plate assembled to the movable frame, and a large hole cover plate located at the access opening. - A ceiling structure used in a building comprising a door and, at its access opening, an auxiliary beam IC, a fixing frame, and a plurality of fittings for attaching the access door to the ceiling framework.