JPH0141788B2 - - Google Patents

Description

Detailed Description of the Invention A. Purpose of the Invention [Field of Industrial Application] The present invention relates to a rectangular prefabricated ceiling constructed by combining four types of rectangular ceiling modules (constituent units - hereinafter abbreviated as units). . A wide ceiling surface is formed by arranging the prefabricated ceilings one after another.

[Conventional technology]

Prefabricated ceilings are now well known. The ceiling units have a size of approximately 10 to 36 ft ² (1 to 2 m on a side) and are easily arranged repeatedly to form a prefabricated ceiling. Such units and ceilings are described, for example, in U.S. Pat. No. 3,372,270,
It is described in the same No. 3743826 and the same No. 3831019.

All of these units are formed by arranging four sheet metal panels with a square opening in the center. A ceiling section assembled with the unit has upwardly directed edges around the periphery of the unit and at the central opening. A luminaire with a light source is installed in the central opening. Also, sound deadening material is placed on the ceiling, and sound damping panels are placed above it. In all of these units, ceiling support is generally provided by a vertical frame extending upwardly along the line of the connection between the ceilings. Such units include lighting, air handling, sound damping, flexible
partitioning) to create a truly integrated prefabricated ceiling.

[Problem that the invention seeks to solve]

Due to energy issues in recent years, some building blocks of prefabricated ceilings are no longer equipped with lighting equipment. Therefore, it would be desirable to provide a ceiling unit that does not require traditional large frames or ceiling lighting fixtures.

One of the objects of the invention is to provide a unit that does not require a large vertical frame to support the unit.

Another objective is to provide a unit whose ceiling is flat rather than pyramidal.

Another object is to also provide a prefabricated ceiling using such a unit, in particular a unit without a luminaire or lamp housing.

Other objects will become apparent to those skilled in the art upon reference to the following description and accompanying drawings.

B. Structure of the invention [Means for solving the problems] The present invention provides four rectangular metal plates 15a to 15d.
are sequentially arranged in a windmill shape with their long sides and short sides butted together to form a rectangular opening 18a in the center, and an opening 1 in the center that is approximately the same size as the above opening 18a.
8 are arranged in parallel vertically with a space for accommodating the sound absorbing material,
Bent pieces facing each other are provided around the upper and lower panels, and are fitted and fixed to each other, and an inward stepped portion 112 is formed on the outer peripheral surface of the fitted and fixed portion, and openings in the upper and lower panels that face each other are formed. The opposing bent pieces provided on the four sides of 18 and 18a are fitted and fixed to each other to form a panel body, and a lighting fixture support frame 41 is installed on the top panel along the side of the opening 18a, and then Attach the lighting fixture 57 to the opening 18 in the bottom panel.
Constituent unit 3 with lighting equipment attached with translucent plate 71
and a second structural unit 5 with a lighting fixture in which a lighting fixture is directly attached to the top panel without using the lighting fixture support frame 41, and in the panel body, an opening 18 in the bottom panel.
and the opening 18a of the top panel are connected to the metal plates 77 and 77, respectively.
In the panel body, the bottom panel is closed with the opening 18.
a structural unit 9 consisting of a plate 113 having no metal plate and having an opening 18a of the top panel closed with a metal plate 187; frame 11
This is a prefabricated ceiling in which a stepped portion 112 of the outer peripheral surface of each unit is mounted on a receiving surface 111 of the ceiling.

[Effect]

Unit 3 with a lighting fixture, which has a light-transmitting plate 71 in the center opening of the bottom panel and a lighting fixture 57 located above the center opening of the top panel, and also the lighting fixture 57A
A prefabricated ceiling in which four types of units are arbitrarily selected and combined: a unit 5 with a second lighting fixture having a central opening, a unit 7 having a metal plate 77 attached to the center opening of the lower panel, and a unit 9 having no central opening in the lower panel. is easily configured. Since the prefabricated ceiling 1 is constructed by simply placing each unit on the lattice-shaped ceiling support frame 11, the ceiling space can be low. Since each unit is composed of interchangeable parts, they can all be assembled using approximately the same manufacturing procedure.

〔Example〕

Preferred embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of a part of the prefabricated ceiling of the present invention seen from below, and FIG. 2 is a perspective view of the ceiling of FIG. 1 seen from above.

Reference numeral 1 in the figure indicates the ceiling of the present invention, and rectangular units 3, 5, 7, and 9 of the same size constitute the ceiling.
is arranged so that each of its two sides touches two other adjacent units. The unit 3 is a unit with a lighting fixture 57, and a U-shaped fluorescent lamp 63 is shown by removing the translucent plate 71 in the center. 5 is a unit with a second lighting fixture 57A, 7 is a unit whose bottom panel opening is closed with a metal plate 77, and 9 is a unit with a bottom panel without an opening.

Each of the ceiling structural units 3, 5, 7, and 9 shown in FIGS. 1 and 2 is supported by a support frame 11 (FIG. 6) made of linear support members formed in a lattice shape.

Figure 3 shows the lighting fixture 5 of the above-mentioned lighting fixture unit 3.
Perspective view from above with 7 removed, Figures 4 and 5
The figures are cross-sectional views taken along lines 4-4 and 5-5 in FIG. 3, respectively.

The bottom panel 13 is a sheet of aluminum or other metal having a rectangular opening 18 in its center and a flat surface 17 elsewhere. A large number of small holes for sound absorption are provided in the surface 17 by the method described in US Pat. No. 3,743,826. An upwardly bent piece 19 is provided along the outer periphery of the lower panel 13, an outwardly bent piece 21 is provided from the top thereof, and an upwardly bent piece 23 is provided from the end thereof.
An upwardly bent piece 25 is provided along the four sides of the opening 18, and an inwardly bent lip 27 is provided at the upper end of the piece.

Four rectangular plates 15 forming the top panel 15
a to 15d have a flat surface 29 consisting of a pair of opposing long sides and short sides. Also, the top panel 15
A downwardly bent piece 31 and a tread 33 that bends inward from the lower part are formed on one of the long and short sides forming the four peripheral sides. The inner height of the downward bent piece 31 is approximately equal to the outer height of the rising bent piece 23 of the lower panel 13, and the inner width of the tread 33 is slightly narrower than the outer width of the tread 21 of the lower panel 13. .

A downwardly bent piece 35 having a height substantially equal to the height of the upwardly bent piece 25 (FIG. 4) of the lower panel 13 shown in FIG. Top panel 15
is formed from a thin metal plate in the same way as the bottom panel.

4, in such a relationship that one short side of the rectangular plate 15a is in contact with the long side of the adjacent rectangular plate 15b, and the other short side of the rectangular plate 15a is in line with the outer long side of another rectangular plate 15d. rectangular plates 15a to 15
d are arranged in a pinwheel shape as shown in FIG. 3, and an opening 18a is formed in the center. The downwardly bent pieces 35 are brought into contact with each other at the abutting positions of the respective rectangular plates 15a to 15d as shown in FIG. 5, and are fixed with rivets 37 before being assembled with the lower panel 13. Figures 3 and 5 show rectangular plate 15b.
An example is shown in which the long sides of are fixed to the short sides of the rectangular plate 15a.

The downwardly bent pieces 31 and inward treads 33 formed around the upper panel 15 are fitted into the upwardly bent pieces 23 and treads 21 of the lower panel 13. The lower step 112 of this tread is mounted on the receiving surface 111 of the ceiling support frame 11.

The outer peripheral sides of the upper panel 15 and the lower panel 13 are combined as described above to form the periphery of the ceiling unit. The downwardly bent piece 35 of the opening 18a of the upper panel 15 is connected to the lower panel 1 as shown in FIG.
It is fitted onto the upwardly bent piece 25 around the central opening 18 of No. 3 and fixed with a rivet 39. The panel body consisting of the upper and lower panels integrally assembled as described above is extremely rigid.

As shown in FIG. 2, the lighting unit 3 includes a lighting equipment support frame 41 consisting of four arms 43a to 43d of the same shape arranged in a pinwheel shape that connect ends and sides. The ends of each arm 43a-43d are provided with a pair of tabs 45 which pass through slots 47 formed in the wide vertical surfaces of the other arms 43a-43d. The length between the tab 45 and the slot 47 of each arm is approximately equal to the length of one side of the square opening 18a.
Notches 49 on the lower surface of the free end of each arm 43a to 43d
are fitted and placed on the lattice-shaped ceiling support frame 11 as shown in FIGS. 2 and 6. This cutout 49 is preferably deep enough so that the lower surfaces of the arms 43a to 43d directly contact the upper surface of the upper panel 15.

The weight of the lighting fixture 57 is transferred to the lighting fixture support frame 4.
1 to the ceiling support frame 11, the arms 43a to 43d prevent the unit 3 from deflecting. The upper ends of each of the arms 43a to 43d are bent horizontally to provide flaps 51 and 52. The lower end of the arm is provided with an inwardly bent flap 53 which is secured to the inward lip 27 of the opening 18 of the lower panel 13 by a sheet metal screw 55 shown in FIG.

As shown in FIG. 6, the lighting fixture 57 is installed on the upper surface of the lighting fixture support frame 41 having the above structure. The lighting fixture 57 is standard and has a top surface 59 (FIG. 2).
A pair of U-shaped fluorescent lamps 63 are provided in a box with an open bottom and four rectangular sides 61.
One extension 65 of the side surface 61 of the luminaire 57
(FIG. 2) is equipped with a ballast for the lamp 63, a power source, and a plug 67 for connection to the lighting equipment 57 of other structural units. As shown in FIG. 6, a flange 69 bent outward and downward is provided at the lower end of the side surface 61 of the lighting fixture 57, and the outward facing flaps 5 of the arms 43a to 43d of the lighting fixture support frame 41 are provided with a flange 69 bent outward and downward.
1.

FIG. 7 is a plan view of a translucent plate 71 used in the rectangular opening 18 of the lower panel of the lighting unit 3, 5 in FIG. 6. The plate 71 is a member that directs or diffuses light, such as a standard translucent prism panel. As shown in the figure, rod pins 73 with springs are provided at the four corners of the translucent plate 71, and are inserted into holes 75 provided on opposing sides of the opening 18 to be supported. Pin 73 is made parallel to one other pin. As a result, the left and right pins 73 on one side of the translucent plate 71
When removed from the hole 75, the translucent plate 71 is suspended and supported using the pin 73 on the other side as a hinge.

The unit 5 with a lighting fixture shown in FIG. 2 has a lighting fixture 57A directly attached to the top panel, is made of a slightly thicker metal plate than the unit 3, and is not provided with a lighting fixture support frame 41 at all. Lighting equipment 57 of this unit 5
Since A (FIG. 2) has a mechanism for cutting off light, it is made deeper than the lighting fixture 57 of unit 3. and the lip 27 (the third
Lip 53 bent inward for incorporation into
is held at the lower side of the bottom opening type box, as in the case of the lighting fixture support frame 41 shown in FIG. This configuration provides a rigid flat unit 5 despite the weight of the lighting fixture 57A.

As previously mentioned, one of the advantages of the ceiling unit of the present invention is that the unit 7 without a luminaire can be compared with the advantages of a unit with a luminaire, such as durability, aesthetics, sound absorption, ease of cleaning, The advantage is that it can be made extremely compact and simple while retaining its advantages such as fire resistance.

A cross section of such a structural unit 7 taken along the line 8--8 in FIG. 2 is shown in FIG. This unit 7 as shown in this figure
Unlike the lighting equipment unit 3, the lighting equipment support frame 41 and lighting equipment 57 are not provided. The lower panel 13 and the upper panel 15 are the same as units 3 and 5. The rectangular opening 18 in the lower panel is closed with a metal plate 77. The metal plate 77 is provided with four side walls 81 that slope upward and inward. An outward flange 83 provided at the upper end of this side wall 81 is fixed to the inward lip 27 around the upper side of the opening 18a of the top panel with sheet metal screws 85.

A metal plate 87 is placed over the opening 18a of the top panel, and is fixed together with the flange 83 to the top surface of the lip 27 using sheet metal screws 85.

The structure of this structural unit 7 can be converted into a unit with a lighting device by removing the metal plates 77, 87. In that case, if the ceiling sag significantly under the weight of the luminaire 57, this can be converted by simple means of adding a luminaire support frame 41. Further, as shown in the figure, a sound absorbing material such as glass wool 89 is filled between the upper metal plate 87 and the lower metal plate 77. Sound below the ceiling is sufficiently weakened by the small holes provided in the flat surface 17 of the lower panel 13 and the flat surface 79 of the metal plate 77, the sound absorbing material 89, the surface of the upper panel 15, and the surface of the upper metal plate 87.

In some cases, rather than having a central metal plate 77 as in the structural unit 7, it may be aesthetically desirable to have no opening 18. Such a unit is indicated by the reference numeral 9 in FIG. 1 and more particularly in FIGS. 10 and 11. The unit 9 is the other unit 3,
It differs from the lower panel 13 of Nos. 5 and 7 in that the lower panel is a rectangular plate 113 that does not have a central opening 18, but otherwise it is a rectangular metal plate 115a like the other units.
~115d combined top panel 129, unit 7
The eighth block that closes the central opening 18a of the top panel in the case of
It consists of a metal plate 187 corresponding to the metal plate 87 in the figure. These are assembled and connected in the same manner as in the case of structural unit 7 (FIG. 8).

That is, the downward bent piece 131 and inward tread 133 provided around the upper panel 129 are replaced by the upward bent piece 119 provided around the lower panel 113.
A step part 112 is formed which is fitted on the outside of the outward tread 121 and upwardly bent piece 123 at the upper part of the holder to connect the periphery of the upper panel 129 and the lower panel 113 and to be mounted on the ceiling support frame 11.

In addition, in this way, the lower panel 113 has the center opening 1.
8, the downwardly bent pieces 136 of the rectangular plates 15a to 15d are connected by rivets to the downwardly bent pieces 189 of the metal plate 187 that closes the opening 18a of the upper panel 129.
A horizontal bent piece 138 is provided at the lower end of the panel as shown in FIG.
It is fixed to the upper surface of 17 with adhesive. This supports the center portion of the lower panel 113 and prevents the panel from bending.

FIG. 11 shows a cross-sectional view taken along the line 11-11 in FIG.
The abutment position of b with the long side is such that the downwardly bent pieces 135 and 136 are brought into contact with each other and riveted together, as in FIG.

In the illustrated example, the bottom panel 13 of each of the structural units 3, 5, and 7 is shown as a single plate, but it may be formed into a pinwheel shape like the top panel plate 15. In this case, it is recommended to increase the strength by arranging the boundaries of the rectangular plates constituting the upper and lower panel plates so that they are staggered.

C. Effects of the Invention As described above, the present invention has a configuration in which two types of structural units 3 and 5 are equipped with lighting equipment, and a metal plate is attached to the opening of the lower panel in order to make the appearance viewed from below substantially the same as the above units. Both the unit 7 and the structural unit 9, which does not have the above-mentioned opening in the lower panel, can be produced at low cost using substantially the same manufacturing procedure and using interchangeable parts. This structural unit is flat and does not protrude upward three-dimensionally, so
It is convenient to handle, and it is convenient to fill the inner space with sound absorbing material. Particularly advantageous is that the ceiling installation space is small. Furthermore, since the ceiling is constructed by placing each structural unit on a lattice-shaped ceiling support frame, it is possible to obtain a desired combination of structural units.

[Brief explanation of drawings]

Figure 1 is a perspective view from below of a part of a prefabricated ceiling using the ceiling structural unit of the present invention, Figure 2 is a perspective view of the ceiling in Figure 1 seen from above, and Figure 3 is a lighting fixture. FIG. 4 is a sectional view taken along line 4-4 in FIG. 3, FIG. 5 is a sectional view taken along line 5-5 in FIG. 3, 6th
The figure is a sectional view taken along line 6-6 in Figure 2, and Figure 7 is a cross-sectional view along line 6-6 in Figure 2.
A plan view of a translucent plate used in the structural unit with the lighting equipment shown in the figure, FIG. 8 is a sectional view taken along the line 8-8 in FIG. 2,
Fig. 9 is a perspective view of a structural unit without an opening for mounting a lighting device, viewed from above, and Fig. 10 is a
A cross-sectional view along line 10, Figure 11 is Figure 9 11-1
A cross-sectional view taken along line 1. 1 is the ceiling, 3 and 5 are ceiling structural units with lighting equipment,
7 and 9 are structural units having no lighting equipment; 11 is a lattice-shaped ceiling support frame; 13 is a bottom panel;
5 is the top panel, 18 is the opening in the bottom panel, 18
41 is a lighting fixture support frame, 57 and 57A are lighting fixtures, 71 is a translucent plate, and 77 and 87 are metal plates that close the openings 18 and 18a, respectively.

Claims (1)

[Scope of Claims] 1. A top panel in which four rectangular metal plates are sequentially arranged in a windmill shape by butting their long sides and short sides to form a square opening in the center, and a top panel having a rectangular opening in the center, which is approximately equal to the above-mentioned opening in the center. A bottom panel of a metal plate with a large opening is arranged vertically and parallel to each other with a space for accommodating the sound absorbing material, and bent pieces facing each other are provided around the top and bottom panels. A panel body is formed by fitting and fixing, forming an inward step on the outer peripheral surface of the fitting and fixing part, and fitting and fixing the opposing bent pieces provided on the four sides of the opposing openings of the upper and lower panels to each other. A lighting equipment-equipped structural unit comprising: a lighting equipment support frame is installed on the top panel along the side of the opening, a lighting equipment is installed on top of the lighting equipment support frame, and a light-transmitting plate is installed in the opening of the bottom panel. , a second structural unit with a lighting fixture that is directly attached to the lighting fixture on the top panel without using the lighting fixture support frame, and in the panel body, the opening in the bottom panel and the opening in the top panel are made of metal a structural unit covered by a plate; and a structural unit in which the bottom panel of the panel body is formed of a plate without an opening, and the opening of the top panel is covered with a metal plate, and the above four types of structural units are suitably arranged. A prefabricated ceiling in which the steps on the outer circumferential surface of each unit are mounted on the receiving surface of a lattice-shaped ceiling support frame.