JP2010180672A - Ceiling board - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a ceiling board for a system ceiling, wherein the ceiling board of a required size can be obtained without using a special tool in a construction field with excellent workability and finishing appearance, and its efficient production can be achieved. <P>SOLUTION: The ceiling board 10 for the system ceiling includes: plate-shaped bodies 12 having a profile of the almost same size of a square grid installed in a ceiling part; notch step parts 14 which are provided around the whole outer rim of the surface of the body 12, and engaged with ceiling cornices and T bars which constitute the grid; one or more rows of recessed grooves 16 which are formed to the same depth as the notch step part 14 so that a pair of notch step parts 14 are connected with each other which are provided on the opposing sides on one side of the surface of the body 12, and extends in parallel with the notch step parts 14 on the opposing sides on the other side; and cutting grooves 18 having almost V-shaped cross section in the width direction which is formed over the whole length of the recessed grooves 16 on at least one of the front and rear surfaces of the body 12 in the center of the width direction of the recessed grooves 16. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a ceiling board suitable for system ceiling construction.

  Mineral fiberboard, which is formed by adding inorganic lightweight foam as necessary to rock wool, the main raw material, and bonding with a binder, is widely used for ceiling boards in houses and buildings. ing.

  In addition, as a method of installing such a ceiling board, a direct pasting method for fastening it to the field edge, a discarding pasting method for fastening the ceiling board to the base board, a conshield construction method for fastening the ceiling board only with metal fittings to the steel base, etc. In recent years, particularly in office buildings, etc., as shown in FIG. 4, T bars B suspended by suspension members F suspended from the peripheral edge E and the ceiling slab S are formed in a lattice shape. A system ceiling A constructed by a lay-in type in which a ceiling plate 1 is dropped into a square grid G to form a ceiling surface is often used.

  Here, in addition to the ceiling plate 1, a lighting fixture (not shown), an air conditioning outlet, a broadcasting device, a sprinkler, and the like are embedded in the grid G constituting the system ceiling A. For this reason, it is necessary to construct the space around these appliances by cutting the ceiling plate 1 into small pieces, but it is extremely difficult to cut small pieces from a large plate one by one using a ruler etc. It was an inefficient work. Further, depending on the accuracy of the cut, when the ceiling board 1 cut into small pieces is dropped into the grid G, gaps or steps are formed at the seam, and the appearance and the mounting property to the grid G (hereinafter, these are summarized) There was also a problem of damaging the “finish”.

  Therefore, as a technique that can solve such a problem, as in Japanese Patent Application Laid-Open No. 2002-21289, an uneven pattern is formed on the surface of a flat rectangular substrate, and at least one of the two opposing sides There is a technique in which one or more decorative grooves are formed in parallel to make a gap or a step generated at a seam by cutting inconspicuous.

  By adopting such a technique for the ceiling plate 1 of the system ceiling A, it is possible to make a gap or a step generated at the joint when the ceiling plate 1 cut into small pieces is dropped into the grid G inconspicuous.

JP 2002-21289 A

  However, in the above-described technique, when the ceiling plate 1 is cut into small pieces, it still has to be cut using a ruler or the like, and the troublesome work is not solved, and the system ceiling A When the above technology is applied to the ceiling plate, it is possible to obscure the gaps and steps that are created when the ceiling plate is cut into small pieces, but these gaps and steps are not completely eliminated. Still, the attachment to the grid G remains impaired. For this reason, there is a problem that when the ceiling is stressed by an earthquake or the like, the ceiling board may easily fall from the grid G. In addition, there is a problem that the design is limited because the surface decoration of the ceiling panel is restricted.

  On the other hand, in order to eliminate such gaps and steps, and to save the trouble of accurately cutting the ceiling plate 1 into small pieces while using a ruler at the construction site of the system ceiling A, a small-sized ceiling plate is prepared in advance. However, it is necessary to prepare many types of ceiling boards in order to correspond to each construction site, which reduces ceiling board productivity and makes inventory management complicated. There was a problem.

  Therefore, the main problem of the present invention is that it is possible to easily obtain a ceiling plate of a required size without using a ruler or the like at the construction site of the system ceiling, and it is excellent in workability and finish and is efficiently produced. It is to provide a ceiling panel for a system ceiling that can be done.

The invention described in claim 1 is a ceiling plate 10 for a system ceiling A that is fitted into a rectangular grid G suspended from a ceiling portion and constitutes a ceiling surface,
(A) a plate-like main body 12 having an outer shape approximately the same size as the grid G;
(B) a notch step portion 14 provided on the entire outer edge portion of the surface of the main body 12 and engaged with the peripheral edge E and the T bar B constituting the grid G;
(C) It is dug at the same depth as the notch step portion 14 so as to connect the pair of notch step portions 14 provided on one opposing side on the surface of the main body 12, and the other on the opposite side side One or a plurality of rows of concave grooves 16 extending in parallel with the notch step portion 14, and (d) at least one of the front and back surfaces of the main body 12 at the center in the width direction of the concave groove 16, the concave And (e) a ceiling plate 10 having a cutting groove 18 having a substantially V-shaped cross section in the width direction provided over the entire length of the groove 12.
It is.

  In the ceiling board 10 of the present invention, a general cutting tool such as a cutter is applied to the cutting groove 18 having a substantially V-shaped cross section in the width direction provided at a predetermined position of the main body 12 at the construction site of the system ceiling A. By simply cutting the ceiling board 10 along the cutting groove 18, the small piece 10c having a specified size can be obtained easily and accurately.

  Further, since the concave groove 16 on the surface of the main body 12 is formed at the same depth as the notch step portion 14, when the ceiling plate 10 is cut along the cutting groove 18, the portion of the cut concave groove 16 is cut. Has the same function as the notch 14. For this reason, the cut groove 16 can be engaged with the surrounding edge E, T bar B, etc. constituting the grid G, and the ceiling plate 10 suitable for the regular type system ceiling A is obtained. Can do.

  Thus, in the ceiling board 10 of the present invention, it is not necessary to manufacture various small-sized ceiling boards in advance, so that the ceiling board 10 can be produced efficiently. In addition, the ceiling plate 10 can be easily and accurately cut into small pieces 10c having a prescribed size at the construction site of the system ceiling A, and the cut pieces 10c are dropped into the necessary portions of the grid G without generating gaps or steps. Therefore, it is excellent in workability and finish. It should be noted that the portion of the ceiling plate 10 that becomes the pattern (that is, the surface portion of the main body 12 excluding the notch 14 and the concave groove 16) is not limited to the uneven pattern, but includes various worm-eating patterns and tile-shaped patterns. A pattern can be applied. That is, there is no worry that the designability is limited.

  According to the present invention, it is possible to easily obtain a ceiling plate of a necessary size without using a ruler or the like at the construction site of the system ceiling, and it is excellent in workability and finish and can be produced efficiently. A ceiling panel for a system ceiling can be provided.

It is a perspective view which shows the ceiling board of one Example of this invention. It is a perspective view which shows the state which cut the small piece from the ceiling board of FIG. It is a front view which shows the ceiling board of the other Example of this invention. It is a partial cutaway perspective view which shows the structure of a lay-in type system ceiling.

  Hereinafter, the present invention will be described in detail according to illustrated embodiments. The ceiling board of the present invention is for constituting the ceiling surface of the system ceiling A as shown in FIG. FIG. 1 is a perspective view showing a ceiling board 10 according to one embodiment of the present invention. As shown in this figure, the ceiling board 10 according to this embodiment is roughly composed of a plate-like main body 12, a notch step portion 14, It is constituted by a groove 16 and a cutting groove 18.

  The main body 12 is a rectangular plate-like member having an outer shape substantially the same size as the grid G constituting the system ceiling A, and is a mineral fiber board obtained by making a slurry mainly composed of mineral fibers such as rock wool. Etc. are preferably used.

  The surface of the main body 12 (upper surface in the case of FIG. 1) may be provided with a worm-like shape (see FIG. 1) or a tile shape as necessary. In addition to such a pattern, Or you may make it paint separately from such a pattern.

  The entire outer edge portion of the main body 12 is formed with a substantially L-shaped notch step portion 14 whose surface side is notched.

  The cut-out step portion 14 is attached to the mounting portion of the peripheral edge E and the T bar B constituting the grid G when the ceiling plate 10 is cut into small pieces 10c (see FIG. 2) and dropped into the grid G for use. It is a part to be done. By providing such a notch step portion 14 in the main body 12, the ceiling board 10 of this embodiment is suitable for the regular type system ceiling A among the lay-in type system ceilings A.

  In addition, this notch step part 14 is formed by cutting the whole surface side outer edge part of the main body 12 with cutting tools, such as a rib cutter, etc. In the thing shown in FIG. The corners are chamfered. By performing such chamfering processing, not only the dropping into the grid G is facilitated, but also the notch step portion when the small ceiling 10c (with the ceiling plate 10 cut) is dropped into the grid G to constitute the system ceiling A. 14 can be made inconspicuous.

  For example, when the thickness of the main body 12 is 15 mm, the depth d of the notch step portion 14 is preferably 10 mm or less. This is because if the depth d of the notch step portion 14 exceeds 10 mm, the ceiling board 10 is easily damaged.

  Moreover, although the width w of the notch step part 14 can also be set suitably, it is preferable to set to the range of 5-20 mm. When the width w of the notch 14 is smaller than 5 mm, the mounting cost on the peripheral edge E or T bar B is too small, and when the system ceiling A is constructed by dropping the small piece 10c into the grid G, the small piece 10c If the width w of the notch step portion 14 is larger than 20 mm, the mounting margin on the peripheral edge E or T bar B becomes too large, and the small piece 10c is gridded. When the system ceiling A is formed by dropping it into G, the notch 14 becomes conspicuous, and a large amount of shavings is generated during cutting (in view of the method of forming the notch 14). This is because the yield decreases and the productivity deteriorates.

  The concave groove 16 is dug to the same depth d as the notch step 14 so as to connect the pair of notch steps 14 provided on one opposite side on the surface of the main body 12, and on the other opposite side. It is a groove extending so as to be parallel to the notch step portion 14.

  The number of the concave grooves 16 provided on the surface of the main body 12 can be appropriately set according to the required size of the small piece 10c. For example, when the width of the main body 12 (perpendicular to the groove 16) is 600 mm and one groove 16 is formed at the center in the width direction, the width of the two small pieces 10c obtained is 300 mm. It becomes. In addition, when the width of the main body 12 is 600 mm and two concave grooves 16 are formed evenly in the width direction as shown in FIG. 1, the width of the three small pieces 10 c obtained is 200 mm respectively. Become. Furthermore, when the main body 12 has a width of 600 mm and five concave grooves 16 are formed evenly in the width direction, the widths of the obtained six pieces 10 c are each 100 mm.

  The concave groove 16 is formed by cutting a predetermined position on the surface of the main body 12 with a cutting tool such as a rib cutter. In the case shown in FIG. The corners are chamfered.

  Although the width W of the groove 16 formed in this way can be set as appropriate, it is particularly preferable to set it to approximately twice the width w of the notch step portion 14 described above. By doing so, when the small piece 10 c is cut from the ceiling plate 10 using a cutting groove 18 to be described later, the cut groove groove 16 has a shape symmetrical to the notch step portion 14. As a result, the cut concave groove 16 functions as the notch step portion 14.

  A cutting groove 18 having a substantially V-shaped cross-sectional shape in the width direction is provided over the entire length of the groove groove 16 at the center in the bottom width direction of the groove groove 16.

  The cutting groove 18 is a groove for guiding a cutting tool such as a cutter when the ceiling board 10 is cut into small pieces 10c having a predetermined size.

  The depth and the maximum width (on the surface side of the main body 12) of the cutting groove 18 are appropriately set according to the thickness, strength, workability, etc. of the main body 12. For example, when a mineral fiber board mainly composed of rock wool is used as the main body 12 and the thickness of the main body 12 at the concave groove 16 forming portion is about 10 mm, the depth and maximum width of the cutting groove 18 are both 2 mm. It is preferable that it is about. If it is the groove | channel 18 for a cutting | disconnection of this dimension, it is also possible to obtain the small piece 10c of a defined dimension from the ceiling board 10 by bending by hand, without using a cutting tool.

  In the example shown in FIG. 1, the cutting groove 18 is linear, but the cutting groove 18 can be formed in a dotted line shape, and the cutting groove 18 is formed in a dotted line shape. In some cases, it may be formed in a slit shape penetrating the main body 12.

  Next, a method of constructing the system ceiling A as shown in FIG. 4 using the ceiling board 10 configured as described above will be described.

  First, a suspension member F composed of a suspension bolt (or suspension wire), a channel hanger, or the like is suspended from the ceiling slab S. In addition, in the system ceiling A shown in FIG. 4, the case where the suspension member F is suspended from the ceiling slab S is shown, but the place where the suspension member F is suspended is not limited to such a ceiling slab S, and the steel frame It may be a beam or a wooden beam.

  Next, the peripheral edge E is attached to a predetermined height of the wall that divides the room, the T bar B is suspended by the suspension member F, and the peripheral edge E, T bar B, and T bar B are assembled in a lattice pattern. The rectangular grid G is suspended over the entire ceiling space.

  Then, lighting fixtures, air-conditioning outlets, and the like are dropped into the grid G, and these fixtures are bound to the T bar B with a fall prevention wire or the like as necessary, and then the ceiling plate 1 is placed on the entire open portion of the grid G. Alternatively, the system ceiling A is completed by dropping the small piece 10c.

  Here, the grid G in which lighting fixtures, air-conditioning outlets, and the like are installed requires a small piece 10c in which the ceiling plate 10 is cut. Since a substantially V-shaped cutting groove 18 is provided, simply cutting a general cutting tool such as a cutter against the cutting groove 18 at the construction site of the system ceiling A makes it easy and accurate. It is possible to obtain a small piece 10c having a specified size from the ceiling board 10 well.

  Further, since the concave groove 16 on the surface of the main body 12 is formed at the same depth as the notch step portion 14, when the ceiling plate 10 is cut along the cutting groove 18, the portion of the cut concave groove 16 is cut. Has the same function as the notch 14. For this reason, when the small piece 10c cut from the ceiling board 10 is dropped into the grid G, the cut concave groove 16 can be engaged with the peripheral edge E, the T bar B, or the like constituting the grid G.

  In the above-described embodiment, the case where the cutting groove 18 is provided only in the center in the width direction of the bottom of the groove 16, that is, in the center in the width direction of the groove 16 is shown in FIG. As shown, the cutting groove 18 may be provided on both the front and back surfaces of the main body 12 at the center of the concave groove 16 in the width direction, or only on the back surface side (not shown) of the main body 12. May be.

DESCRIPTION OF SYMBOLS 10 ... Ceiling board 10c ... Small piece 12 ... Main body 14 ... Notch step 16 ... Groove groove 18 ... Cutting groove A ... System ceiling B ... T bar E ... Circumference edge G ... Grid

Claims (1)

A ceiling plate for a system ceiling that is fitted into a rectangular grid suspended from a ceiling portion and constitutes a ceiling surface,
A plate-like body having an outer shape substantially the same size as the grid;
A notch step portion provided on the entire outer edge portion of the surface of the main body and engaged with a peripheral edge or a T-bar constituting the grid;
It is dug at the same depth as the notch step portion so as to connect the pair of notch step portions provided on one opposite side of the main body surface, and is parallel to the notch step portion on the other opposite side. 1 or a plurality of rows of concave grooves extending in the manner described above, and at least one of the front and back surfaces of the main body at the center in the width direction of the concave grooves, a cross section in the width direction provided over the entire length of the concave grooves A ceiling board comprising a substantially V-shaped cutting groove.

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