JP2007332619A - Ceiling structure and ceiling member - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sound absorbing ceiling which is light in weight and superior in sound absorbing properties. <P>SOLUTION: In construction of the sound absorbing ceiling, a ceiling surface forming part 11 of a ceiling member 10 is divided into a plurality of opening zones 12 each having a hexagonal shape or the like, then a plate member 14 is arranged on one side of the opening zones 12, and a sound absorbing cloth 20 is arranged on the other side of the same. Then, hanging bolts 102a are hung from a ceiling skeleton 101, on which ceiling joist receivers 103 and ceiling joists 104 are arranged, and the ceiling member 10 is mounted on the ceiling joists 104, followed by filling a gap 105 between the ceiling member 10 and each ceiling joist receiver 103 with a sound absorbing material 30, to thereby construct a ceiling structure 100. By virtue of this ceiling structure, the sound shielding performance thereof to upper stories is improved, and the quietness inside a room is achieved by the sound absorbing cloth 20. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a building technique, and in particular, is a technique that is effective when applied to construct a sound-absorbing ceiling that is lightweight and excellent in sound-absorbing properties of a building.

  A plate-like sound-absorbing material is used for a suspended ceiling of an office or the like, and a gypsum board is often used for the base. When constructing such a suspended ceiling, suspension bolts, field edges, and the like are grounded from the ceiling of the building frame, and a gypsum board as a base material is attached to the field edge with screws for gypsum board. On top of that, a construction method is generally used in which a plate-like sound absorbing material is fixed with screws or the like.

Patent Documents 1 and 2 describe a configuration of a fiber panel having a configuration in which one opening of an open cell lattice usable for a house member or the like is covered with a continuous flat plate.
JP 2000-256998 A JP 2000-96498 A

  In the case of using a gypsum board as a base for a suspended ceiling, the suspended ceiling structure portion is inevitably heavy, and thus a lighter ceiling member is desired. In particular, in recent years, the earthquake resistance of buildings has been screamed, and in some cases, a ceiling with a suspended structure has fallen due to the earthquake, and the weight of the ceiling structure has become a problem.

  In addition, although the gypsum board used for the base has high processability on site, it has been pointed out that the gypsum powder is scattered during processing. Development of a relatively simple construction member that is lighter than gypsum board and does not cause gypsum scattering is required.

  Furthermore, in recent years, the comfort of the indoor environment has become more conscious than before, and in particular, the quietness of the indoor environment has been demanded. There is a demand for a configuration that maintains the quietness of the indoor environment by absorbing sound without reflecting it.

  Regarding the sound absorption characteristics in the room, although it has been studied and tried variously in hall configurations such as music halls, it can not be said that it is still a technology that can be applied to ordinary houses in terms of its workability, construction cost, members, etc. It is hard to say that they are still mature.

  While the present inventor is studying the quietness of a room in such a general house, in particular, paying attention to the reflection of sound on the ceiling surface, it is possible to considerably secure the quietness of the room by eliminating the reflection of such sound. I noticed.

  On the other hand, Patent Documents 1 and 2 disclose a configuration of a fiber panel formed in an open lattice, and in the configuration of such a fiber panel, although there is no clear description, it is considerably in terms of weight compared to a gypsum board. Inferred to be light. However, there is no description regarding the sound absorption characteristics of the fiber panel.

  This invention is made | formed in view of this point, and is providing the technique which comprises the ceiling excellent in the sound absorption characteristic.

  The above and other objects and novel features of the present invention will be apparent from the description of this specification and the accompanying drawings.

  Of the inventions disclosed in the present application, the outline of typical ones will be briefly described as follows.

  The ceiling structure of the present invention has a surface portion partitioned into a plurality of opening sections, and a ceiling member having a ceiling surface constituent portion in which a plate-like member is provided on one side of the surface portion is provided on the ceiling side. It is provided in. In this configuration, the ceiling structure is characterized in that the ceiling member is configured as a suspended ceiling provided by being hung from the ceiling-side casing ceiling by a predetermined distance. Alternatively, the ceiling structure is configured as a suspended ceiling in which a suspension bolt is suspended from the ceiling-side casing ceiling, and the suspension member is provided with the ceiling member via a field edge receiver and a field edge. And a field receiver, a predetermined space is provided so that sound in a specific frequency range is absorbed.

  In any one of the configurations described above, the ceiling member is provided with the plate-like member side facing the ceiling side, a sound absorbing cloth is provided on the opening partition side of the ceiling member, and the sound absorbing cloth side is a chamber below the ceiling surface. It is provided facing inward. Alternatively, the plate-like member is provided with a hole smaller than the opening section in accordance with the opening section, and the hole is provided with a sound absorbing cloth closing the hole, and the ceiling member is provided with the sound absorbing cloth. It is provided facing the ceiling side.

  The present invention is a ceiling member that forms a ceiling surface, wherein a surface portion of the ceiling member that forms the ceiling surface is partitioned into a plurality of opening sections, and on either one of the front and back sides of the surface portion, a plate A shaped member is provided. In this configuration, a sound absorbing cloth is provided on the other side of the surface portion. Alternatively, the plate-like member is provided with a plurality of holes corresponding to the plurality of opening sections of the surface portion, and the plate-like member is provided with a sound absorbing cloth so as to close the plurality of holes. It is characterized by that.

  Among the inventions disclosed in the present application, effects obtained by typical ones will be briefly described as follows.

  According to the present invention, a sound-absorbing ceiling that is lightweight and has excellent sound-absorbing characteristics can be configured.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Note that components having the same function are denoted by the same reference symbols throughout the drawings for describing the embodiment, and the repetitive description thereof may be omitted.

(Embodiment 1)
Fig.1 (a) is a top view of the ceiling member in connection with this invention, (b) is the sectional drawing. Fig.2 (a) is a top view which shows the modification of the ceiling member in connection with this invention, (b) is the sectional drawing. Fig.3 (a) is a top view which shows the modification of the ceiling member in connection with this invention, (b) is the sectional drawing. 4A is a plan view showing a configuration in which a sound absorbing cloth is provided on the ceiling member shown in FIG. 1, and FIG. 4B is a cross-sectional view thereof. 5A and 5B are cross-sectional views showing a ceiling structure using the ceiling member shown in FIG.

  The ceiling member 10 of the present embodiment is formed in a board shape, for example, as shown in FIGS. The ceiling member 10 formed in a board shape is configured as a ceiling surface constituting portion 11 whose board surface side constitutes the ceiling surface. The ceiling surface constituting part 11 is partitioned into a plurality of opening sections 12. The opening section 12 is configured by a rib 13 in a hexagonal honeycomb structure, for example.

  Thus, the ceiling member 10 has a structure having higher strength and higher rigidity than the case where the ceiling member 10 is formed of a plurality of opening sections 12 and is simply configured as a flat board. It has become. In addition, it is much lighter than a board such as plasterboard with the same thickness.

  For example, as shown in FIG. 1A, the ceiling member 10 having such a configuration is entirely configured in a rectangular board shape having a predetermined dimensional standard. The board-like square ceiling member 10 can be configured to have a ceiling surface with a desired width by connecting a suitable number in the vertical and horizontal directions.

  In the ceiling member 10, as shown in the cross-sectional view of FIG. 1B, for example, a plate-like member 14 formed in a flat plate shape is provided on one side of the opening compartment 12 that divides the ceiling surface constituting portion 11. ing. In this way, one side of the opening section 12 is closed by the plate member 14. Incidentally, FIG.1 (b) is sectional drawing at the time of cut | disconnecting by the AA line of Fig.1 (a).

  In the case shown in FIG. 1, the individual opening sections 12 are shown as hexagons having the same dimensions. However, the shape of the opening sections 12 can take various shapes such as a triangle. For example, the case shown in FIG. 2A shows a case where the individual opening sections 12 are formed in a circular shape. FIG. 2B shows the cross section, but the plate-like member 14 is provided on one side of the opening section 12 as in the case of FIG.

  Further, as shown in FIG. 3 (a), it does not matter if the individual opening sections 12 are formed in a square shape. A cross-sectional view taken along line AA in FIG. 3A is shown in FIG. 3B. As in FIG. 1B, the plate-like member 14 is one of the opening sections 12. On the side.

  For the rib 13, for example, various materials such as a wood material, a resin material, or a metal material can be used. The wood material can also include paper. The plate-like member 14 can also use the same material as the rib 13.

For example, when the ceiling member 10 is made of paper, the weight is about 3 kg / m ² when the thickness is 9 mm, which is more than half of about 6 kg / m ² when the thickness of the conventional gypsum board is 9.5 mm. It is expected that the weight can be reduced and the work efficiency will be greatly improved.

  In the configuration shown in FIGS. 1 to 3, the plate-like member 14 is formed separately from the opening section 12 and then provided on one side of the opening section 12. However, in such a configuration, the plate-like member 14 may be formed integrally with the rib 13 from the beginning.

  When the plate-like member 14 is provided on one surface of the opening section 12, the rib 13 and the plate-like member 14 may be attached with an adhesive. Alternatively, a means for securely fixing the rib 13 and the plate-like member 14 with a nail or a pin may be used. Furthermore, you may make it stick both together with a double-sided tape. In short, it is sufficient that the plate-like member 14 is provided on the one surface side of the opening section 12 without fail.

  In addition, in FIG. 1A, the shape and size of the opening section 12 are shown in the case where the plurality of opening sections 12 are formed to be the same. A part may have a shape different from the shape of the other opening sections 12. Alternatively, a configuration may be used in which the dimensions of some of the opening sections 12 are different, such as whether they are larger or smaller than the other opening sections 12.

  As shown in FIGS. 4A and 4B, the sound absorbing cloth 20 is preferably provided on the opening surface side of the opening section 12 in the ceiling member 10 having such a configuration. The surface on which the sound absorbing cloth 20 is provided can be provided toward the indoor side so as to constitute a ceiling surface. By adopting such a configuration, sound waves such as noise entering from the indoor side are suppressed from being partially reflected and reflected on the ceiling side, and a quiet indoor environment can be configured.

  In the configuration shown in FIG. 4A, the case where the individual opening sections 12 shown in FIG. 1 are formed in a hexagonal shape is illustrated. For the sound-absorbing cloth 20, for example, urethane-based, polystyrene-based, such as a sound-absorbing wallpaper made by Rilikara, glass fiber, etc. can be used. For example, the sound absorbing cloth 20 may be attached to the rib 13 constituting the opening section 12 of the ceiling surface constituting portion 11 with an adhesive. Alternatively, it is possible to use a nail, a pin, a double-sided tape, or the like for reliable fastening.

  The ceiling member 10 having such a configuration can be used to configure an actual ceiling as follows. For example, when a suspended ceiling is configured using the ceiling member 10, the ceiling structure 100 is as shown in FIGS. 5 (a) and 5 (b).

  That is, in FIG. 5 (a), a hanging tool 102 configured as a hanging bolt 102a or the like is suspended from the casing ceiling 101 at appropriate intervals. The suspension bolt 102a is provided with a field edge receiver 103, for example, on the tip side thereof. For example, an I-type field edge 104 is provided in the field edge receiver 103. The above-described ceiling member 10 is provided on the field edge 104 thus provided.

  As shown in FIG. 4B, the ceiling member 10 is provided with a plate-like member 14 on one surface side of the opening section 12 and a sound absorbing cloth 20 on the other surface side. When the ceiling member 10 is attached to the field edge 104, a gap 105 that forms the back of the ceiling is provided between the plate member 14 side of the ceiling member 10 and the field edge receiver 103 side. Such a ceiling may be filled with a sound absorbing material 30 as shown in FIG.

  With such a configuration, noise or the like on the indoor side is absorbed by the sound-absorbing cloth 20 constituting the ceiling member 10 and is improved as compared with the case where a configuration that is quiet is not provided. Further, the sound absorbing material 30 can be used to insulate the back of the ceiling or the upper floor. In such a configuration, since the ceiling member 10 to be used is lighter than the gypsum board, the sound insulation volume is small. Therefore, the sound absorbing material 30 is provided on the back of the ceiling to increase the sound insulation volume.

  FIG. 5A shows the case where the sound absorbing material 30 is provided in the gap 105 in the back of the ceiling. For example, when there is no upper floor portion, the sound insulation function on the upper floor side is not necessary. As shown in FIG. 5B, a configuration in which the sound absorbing material 30 is not provided is also conceivable.

  In addition, as described above, it has been experimentally shown that the sound absorbing property can be exhibited far superior to the case where the sound absorbing cloth 20 is provided on the gypsum board surface by providing the sound absorbing cloth 20 in the opening section 12 of the ceiling member 10. I understood.

  Furthermore, it was confirmed that further sound absorption characteristics are improved by configuring the suspension ceiling and providing an air layer behind the ceiling member 10.

  FIG. 6 shows the above-described effect by experiment. In FIG. 6, the horizontal axis represents the frequency at the center of the 1/3 octave band, the vertical axis represents the reverberation chamber method sound absorption coefficient, and an air layer is provided behind the ceiling member 10 provided with the sound absorbing cloth 20 in the opening section 12. The change of the sound absorption coefficient according to each frequency was shown when the case was not provided, when the case was not provided, and when the sound absorption cloth was provided on the gypsum board after the air layer was provided.

  As shown in FIG. 6, when an air layer was provided behind, the sound absorption coefficient was always the best in the frequency region confirmed in the experiment. In particular, it was confirmed that an excellent sound absorption coefficient was exhibited at 1000 Hz or more and 2000 Hz. On the other hand, when no air layer was provided in the back, it was confirmed that the sound absorption rate was improved at a frequency exceeding 1000 Hz as compared with the case where a sound absorbing cloth was provided on the gypsum board.

  Incidentally, the evaluation experiment of such sound absorption characteristics is based on the difference in reverberation time between when the test piece is placed in the reverberation chamber with the ceiling member 10 of the test piece as shown in FIG. The measurement was performed according to the reverberation chamber method sound absorption coefficient calculation method (JIS 1409) for calculating the sound absorption coefficient of the test specimen. The influence of the air layer behind is that an aluminum frame is provided on the floor surface of the reverberation room, and the ceiling member 10 as a test body is placed on the aluminum frame with a sound absorbing surface facing upward through a wooden receiving material. Set and went. For the ceiling member 10, a commercially available fiber panel manufactured by Maezawa Kogyo Co., Ltd. was used.

  From this experimental result, it is possible to configure a sound absorbing structure from a high sound range, for example, from above about 1 kHz to 4 kHz, with the configuration of the air layer behind the ceiling. The experiment shown in FIG. 6 shows only results up to 2 kHz.

  Moreover, in this embodiment, if the plate-like member 14 provided in the opening section 12 is formed of a sound absorbing material, the sound absorbing characteristics can be further improved. Such a configuration is more effective in the case where the sound absorbing cloth 20 is not provided.

  In the configuration shown in FIG. 4 of the present embodiment, the ceiling member 10 partitioned into a plurality of opening sections 12 has a configuration in which a sound absorbing cloth 20 is pasted on the opening section 12, and the ceiling member 10 serves as a sound absorbing member. It is functioning. Therefore, the ceiling structure of the structure which excluded the conventional base material can be comprised. Further, the ceiling member 10 can be directly stretched on the frame ceiling 101 side.

(Embodiment 2)
In the ceiling member 10 of the present embodiment, as shown in FIGS. 8A and 8B, a hole 15 is provided on the plate surface of the plate-like member 14, and a sound absorbing cloth 20 is provided so as to close the hole 15. It has a configuration. As shown in FIG. 8B, in this configuration, for example, a plate-like member 14 is provided on one surface of the opening section 12, and a hole 15 is provided in the plate-like member 14.

  The hole 15 is provided at a position corresponding to the center of the opening section 12 of the plate-like member 14. That is, it can be said that the plate-like member 14 is formed in an aperture plate in which the holes 15 are opened. This state is as shown in FIG. 8A when viewed in plan.

  A sound absorbing cloth 20 is provided on the surface of the plate-like member 14 formed in the opening plate. As shown in FIG. 8B, the sound absorbing cloth 20 is provided on the entire surface of the plate-like member 14 on the side opposite to the opening section 12 side, for example.

  The sound-absorbing cloth 20 may be attached to the plate-like member 14 side via an adhesive, or may be fixed in one direction by fixing with a nail, a pin, a double-sided tape or the like. In short, any configuration may be employed as long as it is a means that can be securely fixed to the plate-like member 14.

  Although not illustrated, the ceiling member 10 having such a configuration can be used in, for example, the ceiling structure 100 shown in FIGS. 5 (a) and 5 (b). Instead of the configuration described in the first embodiment, the ceiling member 10 having the configuration described in the second embodiment may be used.

  In such a suspended ceiling configuration, the configuration of the opening section 12 of the ceiling member 10, the configuration of the sound absorbing cloth 20, and the configuration of a large air layer on the back of the ceiling constitute a sound absorbing structure in the mid-low range (125 Hz to 500 Hz). It becomes possible to do.

(Embodiment 3)
In the present embodiment, a description will be given of a case where a configuration in which the sound absorbing cloth 20 is not provided on the opening section 12 side among the configurations of the ceiling member 10 described in the first embodiment is used as a ceiling base material.

  Such a configuration is as shown in FIGS. 9A and 9B. That is, in the configuration shown in FIG. 9A, the ceiling structure 200 is provided with, for example, a B-shaped field edge 104 on a field edge receiver 103 suspended from the housing ceiling 101. The ceiling member 10 having a configuration in which the sound absorbing cloth 20 is not provided on the opening section 12 side is provided on the field edge 104 with a gap 105 corresponding to the back of the ceiling between the plate-like member 14 side and the field edge receiver 103. Is being constructed. The sound absorbing material 30 is packed in the gap 105 portion.

  A sound absorbing plate-like member 40 having sound absorbing performance is provided on the opening side of the opening section 12 of the ceiling member 10. The sound-absorbing plate-like member 40 is provided so as to block the opening section 12 over the entire surface.

  By adopting such a configuration, a part of the indoor noise or the like is absorbed by the sound-absorbing plate-like member 40 provided on the surface of the opening section 12 of the ceiling member 10, so that a quiet configuration is not provided. Can also be improved. Further, the sound absorbing material 30 can be used to insulate the back of the ceiling or the upper floor.

  FIG. 9A shows a case where the sound absorbing material 30 is provided in the gap 105 in the back of the ceiling. For example, when there is no upper floor portion, a sound insulation function on the upper floor side is not required. Alternatively, as shown in FIG. 9B, a configuration in which the sound absorbing material 30 is not provided may be used.

  As mentioned above, the invention made by the present inventor has been specifically described based on the embodiment. However, the present invention is not limited to the embodiment, and various modifications can be made without departing from the scope of the invention. Needless to say.

  The configuration of the above embodiment can be applied to buildings, such as offices, commercial stores, hospitals, and schools as well as houses.

  The present invention can be effectively used in the field of ceiling structures having sound absorption.

(A) is a top view which shows the ceiling member in connection with this invention, (b) is the sectional drawing. (A) is a top view which shows the modification of the ceiling member in connection with this invention, (b) is the sectional drawing. (A) is a top view which shows the modification of the ceiling member in connection with this invention, (b) is the sectional drawing. (A) is a top view which shows the structure which provided the sound absorption cloth in the ceiling member shown in FIG. 1, (b) is the sectional drawing. (A), (b) is sectional drawing which shows the ceiling structure which uses the ceiling member using the sound-absorbing cloth. It is explanatory drawing which shows the change of the sound absorption rate by the frequency of a ceiling member. It is sectional drawing which shows typically the setting method of the test body in the case of the measurement of a reverberation chamber method sound absorption coefficient. (A) is a top view which shows the modification of the structure which provided the sound absorption cloth in the ceiling member shown in FIG. 1, (b) is the sectional drawing. (A), (b) is sectional drawing which shows the ceiling structure which used the ceiling member of the structure which does not use a sound absorption cloth as a ceiling base material.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Ceiling member 11 Ceiling surface component part 12 Opening partition 13 Rib 14 Plate-like member 15 Hole 20 Sound-absorbing cloth 30 Sound-absorbing material 40 Sound-absorbing plate-like member 100 Ceiling structure 101 Frame ceiling 102 Hanging tool 102a Hanging bolt 103 Field edge receiving 104 Field edge 105 Clearance 200 Ceiling structure

Claims (8)

  A ceiling member having a surface portion partitioned by a plurality of opening sections, and having a ceiling surface component formed by providing a plate-like member on one side of the surface portion is provided on the ceiling side. Characteristic ceiling structure. The ceiling structure according to claim 1,
The ceiling structure is characterized in that the ceiling member is a suspended ceiling provided by being hung from a ceiling of the ceiling side by a predetermined distance. The ceiling structure according to claim 1,
The ceiling structure is configured as a suspended ceiling in which a suspension bolt is suspended from a ceiling on the ceiling side, and the ceiling member is provided on the suspension bolt via a field edge receiver and a field edge,
A ceiling structure characterized in that a predetermined space is provided between the ceiling member and the field edge receiver so as to absorb sound in a specific frequency range. The ceiling structure according to any one of claims 1 to 3,
The ceiling member is provided with the plate-like member side facing the ceiling side,
A sound absorbing cloth is provided on the opening section side of the ceiling member,
A ceiling structure, wherein the sound absorbing cloth side is provided toward the indoor side below the ceiling surface. The ceiling structure according to any one of claims 1 to 3,
The plate-like member is provided with a hole smaller than the opening section in accordance with the opening section,
In the hole, a sound absorbing cloth is provided to close the hole,
The ceiling structure, wherein the sound absorbing cloth is provided facing the ceiling side. A ceiling member forming a ceiling surface,
A surface portion forming the ceiling surface of the ceiling member is partitioned into a plurality of opening sections,
A ceiling member, wherein a plate-like member is provided on one of the front and back sides of the surface portion. The ceiling member according to claim 6,
A ceiling member, wherein a sound absorbing cloth is provided on the other side of the surface portion. The ceiling member according to claim 6,
The plate-like member is provided with a plurality of holes corresponding to a plurality of opening sections of the surface portion,
A ceiling member, wherein the plate-like member is provided with a sound absorbing cloth so as to close the plurality of holes.