JP4033640B2 - Ceiling structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a ceiling structure constructed on a ceiling wall surface of a building.
[0002]
[Prior art]
As a ceiling board constructed on the ceiling wall surface of a building, a mineral fiber board (rock wool board) has been generally used. As shown in FIGS. 4 and 5 , the ceiling board made of this mineral fiber board is formed in the notch step portion 31 by notching the lower half of both side end portions in an inverted L-shaped cross section over the entire length. And an upper half portion is formed on a locking protrusion 32 protruding horizontally outward from the notch step 31, and further, a lower portion of the vertical surface of the notch step 31 and a lower surface of the ceiling plate In the ceiling plate A ₁ shown in FIG. 4 , the corner portion that is a continuous portion with the side end portion is formed on the square edge 33, and in the ceiling plate A ₂ shown in FIG. 5 , the corner portion is formed on the bevel edge 34 by chamfering. Yes.
[0003]
And these ceiling boards A ₁ and A ₂ are dropped from above between adjacent receiving frames 21 and 21 constructed along the ceiling wall surface at every interval at which the ceiling boards can be stretched, and the both sides thereof are locked. By receiving the lower surfaces of the ridges 32, 32 on the horizontal receiving surfaces 22, 22 formed at the lower ends of the frames 21, 21, the ceiling plate A _{1 is} interposed between the receiving frames 21, 21. , A ₂ is stretched and installed.
[0004]
[Problems to be solved by the invention]
However, according to the ceiling plate A ₁ consisting of the former mineral fiber plate, when fitted between the support frame 21, 21 adjacent the top plate A _1, mineral fiberboard is made of brittle because the metal material undergoing When it comes into contact with the frames 21 and 21, the square edge 33 is lost, and the missing part is noticeable and the appearance is remarkably impaired. In particular, since the ceiling plate A ₁ is dropped between the receiving frames 21 and 21 from above at the time of construction, the ceiling plate A ₁ is tilted or shifted vertically and horizontally while reaching the ceiling plate receiving surfaces 22 and 22 of the receiving frames 21 and 21. There was a problem that the square edge 33 collided with the receiving frames 21 and 21 and the square edge 33 was frequently lost.
[0005]
On the other hand, according to the latter ceiling plate A _2, since the chamfered lower end of the cutout step portion 11 is formed on the bevel edge 34, defects due to collision with the support frame 21 as described above ceiling plate A ₁ is generated Although it is difficult, a gap a is formed between the lower surface, which is the decorative surface of the ceiling plate A ₂ , and the receiving frame 21 through the bevel edge 34, and the decorative surface of the bevel edge 34 exposed in the gap a is the ceiling plate A. There was a problem that the appearance was worse than the makeup face of ₂ . In particular, mineral Fibers are brushed becomes rough when the formation of the beveled edge 34 by chamfering, decorative surface obtained by applying a coating on the finish is poor than painted decorative surface of the top plate A ₂ Therefore, there has been a problem that the above-described problems are further manifested and the design properties are impaired.
[0006]
The present invention has been made in view of such problems, and the purpose of the present invention is to prevent defects during handling and construction, and after construction, the decorative surface is entirely covered via the receiving frame. It is to provide a ceiling structure that can exhibit a beautiful ceiling surface with a continuous appearance.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, the ceiling structure of the present invention, as described in claim 1, has a lower half portion at both end portions formed into a notch step portion having an inverted L-shaped cross section and an upper half portion. Formed in a horizontal locking ridge projecting outward from the vertical surface of the notch step portion, and forming the lower end corner of the notch step portion as a convex arcuate curved surface over the entire length and the bottom surface A ceiling plate made of fiberboard that is coated entirely over the notch step portion, and an upper surface is formed on the receiving surface of the ceiling plate toward both outer sides at the lower ends of the leg pieces having a predetermined length. And a vertical plate having a height equal to the vertical width of the notch step portion of the ceiling plate from the outer end of the ceiling plate placement plate portion downward. It refracts horizontally toward the lower end of the side plate portions on the inner side with forming a side plate portion is formed in the lower end surface, and further, this The joint portion between the end surface and the side plate portion is formed in a convex arc-shaped curved surface composed of a top plate support frame comprising, from above to exist a possible interval darken the ceiling plate in parallel to the support frame The ceiling plate receiving surfaces facing each other in the adjacent receiving frames are received by the horizontal locking protrusions on both sides of the ceiling plate, and the ceiling plate is stretched between the receiving frames on both sides. And the convex arcuate curved surface formed at the lower end corner of the notch step of the ceiling plate is opposed to the convex arcuate curved surface of the lower end of the vertical side plate of the receiving frame, and The lower end surface of the receiving frame and the lower surface of the ceiling plate are arranged flush with each other.
[0008]
[Action]
When the ceiling plate is dropped from above between the receiving frames during construction, even if the lower end of the notch on both sides of the ceiling plate collides with the receiving frame, the lower end is formed as a convex arcuate curved surface. Defects are unlikely to occur. Further, at the time of construction, the convex arc-shaped curved surface is gradually and continuously curved from the lower surface of the ceiling plate, so that the boundary line with the lower surface of the ceiling plate becomes unclear and there is no fear of being noticeable.
[0009]
Further, when the ceiling plate is manufactured, when the lower end portion of the notch on both sides is chamfered into a convex arcuate curved surface, the arcuate curved surface gradually becomes a rough surface from the lower surface side of the ceiling plate. The decorative surface painted on the convex arcuate curved surface from the lower surface of the ceiling board has a good finish, and a beautiful decorative surface can be formed on the entire surface.
[0010]
Furthermore, even if the lower end surface of the receiving frame and the lower surface of the ceiling plate are arranged to be flush with each other, the convex circles from the both sides of the lower surface of the ceiling plate and the both sides of the lower surface toward the ceiling plate receiving surface of the receiving frame Since the boundary line with the arcuate curved surface does not appear clearly, a gap between the ceiling plate and the ceiling plate receiving surface of the receiving frame does not stand out, and a ceiling structure having an excellent appearance can be configured. In this case, the outer corners of the lower end surface of the receiving frame facing the convex arcuate curved surfaces formed on the lower ends on both sides of the ceiling plate are formed into convex arcuate curved surfaces in the same manner as the curved surface of the ceiling plate. If it is formed, the lower end surface of the frame becomes inconspicuous, the design can be further improved, and a ceiling structure that exhibits an excellent appearance without causing a sense of incongruity can be configured.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Next, a specific embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a simplified perspective view of a ceiling board A. The ceiling board A is a flat rectangular mineral fiber board having a certain thickness ( The lower half of each side end is notched in an inverted L-shaped cross section over the entire length, and is formed in the notched step 1 by forming the notched step 1 The upper half is formed in a horizontal locking ridge 2 that protrudes horizontally from the vertical surface 1a of the notch step 1 over the entire length, and the lower surface of the horizontal locking ridge 2, ie, It forms so that the horizontal upper end surface of the said notch step part 1 may be received by the ceiling board receiving surface 12 currently formed in the lower end part of the receiving frame 11 mentioned later.
[0012]
Furthermore, the lower end corners on both sides of the ceiling plate A, that is, the connecting portion between the side edge portions on the lower surface of the ceiling plate A and the lower end portion of the vertical surface 1a of the notch step portion 1 is formed in a convex arc shape over the entire length. It is formed on the curved surface 3. In addition, although the thing of the structure where the front-and-rear end surface of the ceiling board A is formed in the surface perpendicular | vertical on the whole is illustrated, this front-and-rear end part side is also formed by the formation of a notch step part like the said both-sides end part. A structure in which a horizontal locking ridge is provided in the upper half may be employed.
[0013]
The lower surface of the ceiling board A formed in this way is formed on the decorative surface 4 that is entirely coated across the notch step portion 1.
[0014]
Next, the construction structure of the ceiling board A configured as described above will be described. The receiving frame 11 of the ceiling plate A is formed by bending a metal plate as is well known, and as shown in FIGS. 2 and 3, has a fixed length from the center of the lower end surface of the locking head 13 having a rectangular cross section. The ceiling plate mounting plate portions 12a and 12a having a fixed width are formed from the lower end of the leg piece portion 14 toward both outer sides. The horizontal upper surface of the ceiling plate A is formed with receiving surfaces 12 and 12 for receiving the lower surface of the horizontal locking ridge portion 2 of the ceiling plate A, and further downward from the outer ends of the ceiling plate mounting plate portions 12a and 12a. The vertical side plate portions 15 and 15 having a height substantially equal to the vertical width of the notched step portion 1 of the ceiling plate A are formed toward the inner side, and the lower ends of these side plate portions 15 and 15 are horizontally directed toward the inner side. The lower end surface 11a of the receiving frame 11 is formed by being refracted in the direction. The receiving frame 11 has a length corresponding to the area to be constructed.
[0015]
The receiving frame 11 is spaced from the ceiling wall surface of the slab or the like at a predetermined distance below the space where the ceiling plate A can be dropped from above, that is, slightly wider than the width between both end surfaces of the ceiling plate A. Are arranged in parallel with each other and, if necessary, between the adjacent receiving frames 11 and 11, there is a space slightly wider than the front and rear width of the ceiling plate A in the length direction of the receiving frame 11. A rectangular frame in which the ceiling plate A is to be stretched by sequentially arranging short receiving frames 11 'and connecting and fixing the opposite ends of the receiving frames 11' to the opposing side end faces of the adjacent receiving frames 11, 11. 10 forms a grid-like frame that is arranged side by side in the front-rear and left-right directions.
[0016]
The receiving frames 11 and 11 ′ are suspended by suspension hangers 17 attached to bolts 16 whose upper ends are fixed to the ceiling wall surface. The hanging hanger 17 has a central hole of the upper end plate portion 17a inserted through the bolt 16 so that the vertical position can be adjusted and fixed by the bolt 16, and a hanging plate portion bent downward from the upper end plate portion 17a. A sandwiching metal fitting 17c is integrally provided at the lower end of 17b so as to sandwich the locking head 13 of the receiving frames 11, 11 ′.
[0017]
In each rectangular frame 10 of the lattice frame, the ceiling plate A is received by the receiving surfaces 12 and 12 of the receiving frames 11 and 11 adjacent to the lower surfaces of the both side locking ridges 2 and 2, and the receiving frame 11. , 11 in a erected state, receiving the vertical surface 1a of the notch step portion 1 of the ceiling plate A, facing the vertical side plate portion 15 of the frame 11 with a slight gap, and the notch step portion The lower end surface 11a of the receiving frame 11 and the lower surface of the ceiling plate A are flush with the convex arcuate curved surface 3 formed on the lower end portion of the frame 1 so as to face the lower end portion of the side plate portion 15 of the frame 11. It arrange | positions so that it may become. The front and rear end surfaces of the ceiling plate A are arranged in a state of being sandwiched between the side plates of the receiving frames 11 ′ and 11 ′ arranged at right angles to the receiving frame 11.
[0018]
In order to install the ceiling plate A on each rectangular frame 10 of the lattice frame, the horizontal locking ridges 2 and 2 of the ceiling plate A are parallel to the adjacent receiving frames 11 and 11 and the ceiling plate A is in a horizontal state. Then, it is dropped between the receiving frames 11 and 11 from above, and the receiving surface 12 formed by the upper surfaces of the ceiling plate placing plate portions 12a and 12a of the receiving frames 11 and 11 is received by the horizontal locking ridges 2 and 2. , 12 is done by receiving.
[0019]
At this time, while the ceiling panel A reaches the ceiling panel receiving surfaces 12, 12 of the receiving frames 11, 11, the lower end of the notch step portion 1 of the ceiling panel A is tilted, moved up and down, and shifted left and right. May collide with a corner portion that is a continuous portion of the outer end portion of the ceiling plate receiving surface 12 of the receiving frame 11 and the upper end portion of the side plate portion 15, but the lower end portion of the notch step portion 1 is described above. Since it is formed on the convex arcuate curved surface 3 as described above, chipping and breakage are unlikely to occur, and the curved surface 3 slides down while being in sliding contact with the connecting corner portion of the receiving surface 12 and the side plate portion 15. The upper surface of the notch step portion 1, that is, the lower surface of the horizontal locking ridge portion 2 can be received by the receiving surface 12 of the frame 11.
[0020]
As shown in FIG. 3, in the receiving frame 11, the connecting portion of the side plate portion 15 and the lower end surface 11a has a convex arcuate curved surface 11a ′ similar to the convex arcuate curved surface 3 of the ceiling plate A. Is formed. In this way, the outer corner of the lower end surface of the receiving frame 11 facing the convex arcuate curved surface 3 formed on the lower ends on both sides of the ceiling plate A can be formed on the convex arcuate curved surface 11a ′. In this case, the lower end surface 11a of the receiving frame 11 is also inconspicuous, and a ceiling structure with excellent design can be formed. Moreover, although the case where it consisted of a mineral fiber board as the ceiling board A was demonstrated, this invention is applicable also to fiber boards, such as a wood fiber board or an insulation board.
[0021]
【The invention's effect】
As described above , according to the present invention , the lower half portion at both side end portions is formed as a notch step portion having an inverted L-shaped cross section, and the upper half portion is formed as a horizontal locking ridge portion. In the ceiling plate made of fiberboard configured to be received by the ceiling plate receiving frame on the lower surface of the stopping ridge portion, the lower end portion of the notch step portion is formed into a convex arcuate curved surface over the entire length. So, when this ceiling plate is dropped from above between the frames during construction, even if the lower end of the notch on both sides of the ceiling plate collides with the corner of the receiving surface of the ceiling plate, Since the lower end is formed on a convex arcuate curved surface, it is difficult for defects to occur, and furthermore, the convex arcuate curved surface is smoothly continuous with the lower surface of the ceiling plate, so the boundary with the lower surface of the ceiling plate Construct a ceiling structure with a good appearance, with no fear of lines becoming obscure It can be.
[0022]
Furthermore , according to the ceiling structure of the present invention, the receiving frames that form the ceiling plate receiving surfaces are arranged in parallel at the lower end both sides with an interval at which the ceiling plate can be dropped from above, and these receiving frames are arranged in parallel. In the ceiling plate receiving surface, the locking ridges formed on the upper half of both ends of the ceiling plate made of fiberboard are received, and this ceiling plate is installed between the both side receiving frames. A convex arcuate curved surface formed over the entire length at the lower end portion of the notch step portion formed in the lower half portion of the both side end portions of the ceiling plate, and extending in the horizontal direction of the receiving frame. Since it is made to oppose the lower end part of the side surface drooping perpendicularly downward from the ceiling plate receiving surface, the lower end surface of the receiving frame and the lower surface of the ceiling plate are flush with each other Even if it is constructed in such a way, the bottom surface of the ceiling panel, Because the boundary line between the curved surface and the convex arcuate curved surface facing the ceiling plate receiving surface of the system does not appear clearly, the gap between the ceiling plate receiving surface in the ceiling plate and the receiving frame does not stand out, and it has an excellent appearance The ceiling structure which exhibits can be comprised.
[0023]
Further, when the ceiling plate is manufactured, when the lower end portion of both side notch steps is chamfered into a convex arcuate curved surface, the arcuate curved surface gradually becomes a rough surface from the lower surface side of the ceiling plate. The decorative surface painted on the convex arcuate curved surface from the lower surface of the ceiling board has a good finish, and a beautiful decorative surface can be formed on the entire surface. In addition, the outer corners of the lower end surface of the receiving frame facing the convex arcuate curved surfaces formed on the lower ends on both sides of the ceiling plate are formed on the convex arcuate curved surface, so The end face is also less conspicuous, and a ceiling structure with excellent design can be configured.
[Brief description of the drawings]
FIG. 1 is a simplified perspective view of a ceiling board,
FIG. 2 is a simplified perspective view of a part of the construction state,
FIG. 3 is a longitudinal front view of a ceiling board received by a receiving frame;
FIG. 4 is a partial longitudinal front view showing a conventional example,
FIG. 5 is a partial longitudinal front view showing another conventional example.
[Explanation of symbols]
A Ceiling board 1 Notch step 2 Horizontal locking protrusion 3 Convex arcuate curved surface
11 Receiving frame
12 Receiving surface

Claims (1)

The lower half of each side end is formed as a notch step with an inverted L-shaped cross section, and the upper half is formed as a horizontal locking ridge protruding outward from the vertical surface of the notch step; and A ceiling board made of a fiberboard, the lower end corner of the notch step is formed into a curved surface having a convex arc shape over the entire length and the lower surface is entirely coated over the notch step; A ceiling plate mounting plate portion having a constant width, the upper surface of which is formed on the receiving surface of the ceiling plate, is formed at the lower end of the leg piece portion of a fixed length toward both outer sides, and the ceiling plate mounting plate A vertical side plate portion having a height equal to the vertical width of the notch step portion of the ceiling plate is formed downward from the outer end of the portion, and the lower end of the side plate portion is horizontally refracted inward. formed on the lower end face Te, further, ceiling plate receiving obtained by forming a joint portion between the lower end surface and the side plate portion in a convex arc-shaped curved surface The receiving frame is arranged in parallel with an interval at which the ceiling plate can be dropped from above, and both sides of the ceiling plate are horizontally engaged with the opposing ceiling plate receiving surfaces of adjacent receiving frames. A convex arcuate curved surface formed at the lower corner of the above-mentioned notch step portion of the ceiling plate, with the stop ridge portion received and the ceiling plate stretched between both side receiving frames. Is opposed to the convex arcuate curved surface of the lower end portion of the vertical side plate portion of the receiving frame, and the lower end surface of the receiving frame and the lower surface of the ceiling plate are disposed flush with each other. Ceiling structure.

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