JP6158643B2 - System ceiling - Google Patents

Description

This invention relates a system ceiling for ceiling plates are construction, in particular, to a technique for suppressing a reduction in shine product looks due to sagging of the ceiling board.

  2. Description of the Related Art Conventionally, a system ceiling that can efficiently arrange lighting equipment, air conditioning equipment, and safety equipment (sensors, sprinklers, smoke exhausting equipment, inspection ports, etc.) has been generally used as an office ceiling. This system ceiling is configured by assembling a plurality of metal bar members in parallel or lattice form and suspending them from the ceiling slab, and placing various equipment and ceiling members on these bar members. According to this structure, not only can a ceiling work for a large area be performed easily, but also maintenance and refurbishment can be performed without much effort.

  As the ceiling material, a rock wool decorative sound absorbing plate that is lightweight and excellent in sound absorption and design is generally used. However, since this rock wool decorative sound-absorbing plate only has its peripheral part placed on and locked to the bar material, if the humidity is high during construction, the ceiling material absorbs moisture, and the center part is lowered by its own weight. The phenomenon which bends slightly and hangs slightly from a peripheral part arises. And in the office, the windows on the side of the building are large, and the light that enters the room through the windows strikes the ceiling surface diagonally, so the hanging part looks black and the light reflects off the periphery. As a result, there is a problem that even a slight sag is noticeable greatly (see FIG. 6).

  Conventionally, for example, as disclosed in Patent Document 1, it has been proposed to strengthen the plate material itself by laminating it with a metal plate so as not to bend.

Japanese Patent Laid-Open No. 06-240799

  However, in the above proposal, not only the ceiling material becomes expensive due to the lamination of the plate material and the metal plate, but also the problem of peeling of the laminated portion of the plate material and the metal plate is unavoidable, and the stable effect Cannot be obtained.

  An object of the present invention is to make the bending inconspicuous by adding a device to the surface of a ceiling plate used by being placed on a bar material on the system ceiling.

  In order to achieve the above object, in the present invention, the ceiling plate itself is not reinforced to suppress the occurrence of bending, but the bending is left as it is, and the ceiling plate is exposed to light against the surface of the ceiling plate. In some cases, granular coating is applied so that shadows are also produced at the peripheral edge so that the bending is less noticeable.

Specifically, according to the first aspect of the present invention, in a state in which the ceiling plate is mounted on the bar material at the peripheral edge together with the ceiling equipment on the ceiling base material in which the bar material suspended from the ceiling slab is assembled in a lattice shape. Oite system ceiling supported, its interior side surface of the ceiling board has been subjected to particulate coating by paint and makeup aggregate a composition component consisting of an inorganic powder containing particles, average of the particle The particle size is not less than 0.15 mm and not more than 1 mm, which is not less than the thickness of the coating film formed by the paint component excluding the particles, and the granular portion is formed by the particles protruding from the coating film. , ceiling plate in a state where the central portion of the ceiling plate which is supported on the top Ishita locations hangs down from an edge portion, the granular part, the light impinging on said particulate portion, a shadow for inconspicuous drooping of the central portion Raw at least at the periphery Characterized in that it is configured to.

  If the average particle diameter of the particles in the granular coating exceeds 1 mm, the amount of protrusion from the coating film increases, and the coating particles are easily peeled off during transportation or construction of the ceiling panel, so that it is 1 mm or less.

In the first aspect of the present invention, a cosmetic aggregate comprising an inorganic powder containing particles having an average particle size of 0.15 mm or more and 1 mm or less, which is equal to or greater than the thickness of the coating film , is used as a composition component on the surface of the ceiling board. A granular coating is applied by a paint, and a granular portion is formed by particles protruding from the coating film. This granular part has at least the peripheral part of the ceiling plate with a shadow for making the central part hanging less noticeable by the light hitting the granular part in a state where the central part of the ceiling plate supported by the ceiling base is suspended from the peripheral part. Even if the center part is bent so that it hangs down from the peripheral part in the state where the ceiling plate is placed on the bar material at the peripheral part, the peripheral part is from the coating film. Shadows are created by the light striking the granular part of the protruding particles. Because shadow is generated in the entire ceiling plate and also a shadow on the periphery by the shadow, apparently, now the entire ceiling panel looks uniformly, sag of the ceiling plate central portion (bending) Ri is inconspicuous, is inconspicuous system ceiling hanging down the center of each ceiling plate is Ru obtained.

Moreover, since the coating particle of granular coating is 1 mm or less, it becomes difficult for a coating particle to peel off during conveyance of a ceiling board, or construction, and the stable effect is acquired .

As described above, according to the present invention, the interior surface of the ceiling board for the system ceiling is subjected to granular coating with a paint containing a decorative aggregate made of inorganic powder containing particles, and the average of the particles the particle size, as less than a thickness of 0.15mm or more and 1mm of the coating film formed by coating components excluding the particles, the granular part is formed by the particles protruding from the coating film, it is supported on the top Ishita locations In the state where the central part of the ceiling plate hangs down from the peripheral part, the light hitting the granular part causes a shadow to make the central part sag difficult to stand out at least at the peripheral part of the ceiling board. Even if the central part of the ceiling panel placed on the material hangs down from the peripheral part, the peripheral part causes the shadow to be generated by the light hitting the granular part protruding from the coating film, so that the entire ceiling panel can be seen evenly. And so on, it can be made inconspicuous by stabilizing the sag of the ceiling plate central portion.

FIG. 1 is a perspective view showing the structure of the system ceiling as viewed from above. FIG. 2 is an enlarged sectional view showing the structure of the system ceiling. FIG. 3 is a cross-sectional view of the bar material. FIG. 4 is an enlarged plan view of the surface of the ceiling board. FIG. 5 is an enlarged cross-sectional view showing a coating film and a granular portion of the granular coating applied to the surface of the ceiling board. FIG. 6 is a cross-sectional view showing a state in which the center portion of the ceiling board placed on the bar material is bent downward. FIG. 7 is a diagram illustrating a paint composition in granular coating for Examples and Comparative Examples.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The following description of the embodiments is merely illustrative in nature and is not intended to limit the present invention, its application, or its use at all.

  1 and 2 show a system ceiling according to an embodiment of the present invention, wherein 1 is a ceiling slab that constitutes a ceiling portion of a room interior of a building, 2 is a suspension bolt that is embedded and fixed in the ceiling slab 1, 3 Is a hanger attached to the lower end portion of the suspension bolt 2 with nuts 4, 4, and a plurality of bar members 6, 6... Are fixedly attached to the lower end portion of the hanger 3. Are suspended from a ceiling slab 1 by suspension bolts 2 and hangers 3.

  Each of the bar members 6 is made of a metal having a T-shaped cross section, and as shown in FIG. 3, a rectangular cylindrical fixing portion 6a positioned at the upper end and a plate-like shape extending downward from the lower end of the fixing portion 6a. The connecting portion 6b is provided with a pair of left and right engaging portions 6c, 6c that are continuous with the lower end of the connecting portion 6b and extend in the horizontal direction, and the lower end portion of the hanger 3 is fixedly attached to the fixing portion 6a. The portion 6b and the locking portions 6c, 6c are suspended in a state where the T shape is in a reverse direction with a T-shaped cross section.

  The plurality of bar members 6, 6,... Are arranged in a horizontal and vertical direction and arranged in a lattice shape in a plan view, and these bar members 6, 6,. It is configured. A plurality of rectangular accommodation ports 8, 8,... Are formed between the bar members 6, 6,..., And ceiling facilities such as lighting fixtures and air conditioners are provided in some of these accommodation ports 8, 8,. An apparatus (not shown) is fixedly supported, and ceiling plates 10, 10,... Are supported on the remaining receiving ports 8, 8,. A grid-like grid ceiling surface is formed by the devices and the ceiling boards 10, 10,.

  As shown in FIGS. 2 and 4, each ceiling plate 10 is made of, for example, a rock wool material having a size of 600 × 600 mm corresponding to the size of the storage port 8, and is formed at the lower corners of the four peripheral edges. A notch step portion 10 a is formed by cutting the corner portion into a rectangular cross section, and the lower surface of each notch step portion 10 a is placed on the upper surface of the locking portion 6 c of the bar member 6 around the accommodation port 8. By doing so, the ceiling board 10 is supported in a state of being placed on the bar material 6.

  A plurality of pin holes 11, 11,... For sound absorption are opened on the surface of the ceiling board 10 on the indoor side (lower side).

  As shown in FIGS. 4 and 5, the interior side (lower side) surface of the ceiling board 10 is subjected to granular coating with a water-based paint in which particles 13, 13,. The decorative coating film 12 is formed, and thus the ceiling board 10 is a rock wool makeup sound absorbing board.

  And the average particle diameter of particle | grains 13,13, ... by the said granular coating is more than coating-film thickness t of the decorative coating film 12 formed in the ceiling board 10 surface by the coating-material component except particle | grains 13,13, ... In addition, the granular portions 14, 14,... Protruding from the coating film 12 are formed by the particles 13, 13,. Thus, for example, when light entering the room through a building window (not shown) or the like strikes the surface (lower surface) of the plurality of ceiling plates 10, 10,. Are caused to have a shadow on the surface of the ceiling plate 10 by the granular portions 14, 14,.

  The paint in the granular coating contains a resin, a pigment, a decorative aggregate, an additive, water and the like as a composition. As the resin, for example, vinyl acetate, poval (PVA), acrylic, or the like is used.

  As the pigment, a white pigment and an extender are used. White pigments are used as colorants, and are required to have no specific absorption in colors in the visible region and to have a large refractive index and are opaque. For example, zinc white (zinc oxide) and titanium oxide are prominent. Used for. On the other hand, extender pigments are white pigments that are used as other pigments, paint extenders, and as mixing agents for improving colorability, strength, etc. For example, calcium carbonate, barium sulfate, aluminum hydroxide, etc. are used. .

  As additives, dispersants, thickeners, antifoaming agents, fungicides and the like are added.

  For the decorative aggregate, as described above, an inorganic powder containing particles 13, 13,... Having an average particle diameter of not less than the coating thickness t of the cosmetic coating film 12 on the surface and not more than 1 mm is used. Is preferred. Generally, the thickness t of the coating film 12 formed on the surface of the ceiling board 10 made of rock wool makeup sound-absorbing board is 50 to 150 μm, and if it is overcoated after undercoating, it becomes about 100 μm (= 50 μm × 2), and further coloring When applied, the thickness is about 150 μm.

  In order to form a shadow by forming the granular portions 14, 14,... Protruding from the coating film 12 with the particles 13, 13,... Of the decorative aggregate, the average particle diameter of the particles 13 in the decorative aggregate is determined as the coating film. The thickness is not less than t, that is, not less than 0.15 mm (150 μm). Further, in order to prevent the granular portions 14, 14,... From peeling off from the coating film 12, the average particle diameter of the particles 13 is empirically set to 1 mm or less (the depth of the adhesion portion of the particles 13 to the coating film 12). 10% or more).

  Therefore, as shown in FIG. 6, in the construction state of the system ceiling, a plurality of ceiling plates 10, 10,... Are placed on the bar members 6, 6,. When the part M bends so that it hangs down from the peripheral part C, light entering the room through a building window or the like hits the surface of the ceiling boards 10, 10,. The central part M hanging down 10 is black because the light is blocked, and the peripheral part C (the part where the bar material 6 is in contact with the adjacent ceiling plate 10) tends to appear white. However, in this embodiment, since the surface of each ceiling board 10 has been subjected to a granular coating containing particles 13, 13,... Having an average particle diameter of 1 mm or less at a thickness t or more of the coating film 12, Are uniformly shaded on the entire ceiling plate 10 by light striking the granular portions 14, 14,... Composed of the particles 13, 13,... Protruding from the coating film 12 (in FIG. The size is exaggerated). That is, a shadow is formed on the peripheral edge portion C in the same manner as the central portion M, so that a shadow is generated on the entire ceiling plate 10, and the entire ceiling plate 10 appears to be evenly and apparently. 10 The sagging (deflection) of the central part becomes inconspicuous. As a result, a system ceiling is obtained in which the sag of the central portion of each ceiling board 10 is less noticeable.

  Further, since the particles 13, 13,... Of the granular coating are 1 mm or less, the particles 13, 13,. can get.

  Next, specific examples will be described.

(Example)
As shown in FIG. 7, a water-based paint with 10% by weight of resin, 50% by weight of pigment, 10% by weight of decorative aggregate, 1% by weight of additive, and 29% by weight of water was prepared. A granular coating was applied to the surface to form a coating film.

(Comparative example)
As shown in FIG. 7, a water-based paint having 10% by weight of resin, 60% by weight of pigment, 1% by weight of additive, and 29% by weight of water is prepared, and the surface of the rock wool sound absorbing plate is coated to form a coating film. Formed.

  The ceiling plate of the example and the comparative example was placed on the bar material of the system ceiling, and when the occurrence of shadow was observed in the hanging state of the central portion, in the ceiling plate of the comparative example, the central portion was black, the peripheral portion On the other hand, in the ceiling board of the example, shadows were generated in the peripheral portion as well as the central portion, and no difference due to the shadows was generated as a whole.

  The present invention is extremely useful and has high industrial applicability, because even if the center part of the ceiling plate placed on the bar material of the system ceiling hangs down from the peripheral part, the sag is less noticeable.

DESCRIPTION OF SYMBOLS 1 Ceiling slab 6 Bar material 6c Locking part 8 Accommodating port 10 Ceiling board 12 Makeup coating film t Coating film thickness (thickness formed by paint components excluding particles)
13 particles 14 granular parts

Claims (1)

To the ceiling foundation that formed a hanging bar material from the ceiling slab in a lattice pattern, Oite system ceiling to the ceiling plate with the ceiling equipment is supported in a state of being subjected placed at the periphery to the bar member,
On the indoor side surface of the ceiling board, a granular coating is applied by a paint containing a decorative aggregate made of inorganic powder containing particles as a composition component ,
The average particle diameter of the particles is 0.15 mm or more and 1 mm or less, which is equal to or greater than the thickness of the coating film formed by the paint components excluding the particles, and the granular portion is formed by the particles protruding from the coating film. Has been
In a state where the central portion of the ceiling plate which is supported on the top Ishita locations hangs down from an edge portion, the granular part is, the light falling on the granular part of the ceiling plate shadows for inconspicuous drooping of the central portion system ceiling, characterized by being configured to effect at least in the peripheral portion.