Louver mounting holder, louver unit using same, and louver construction method

Abstract

A louver mounting holder (10) mounting and holding a louver (101) having a quadrangular tubular shape and made of incombustible paper to a beam (1) includes an attachment fitting (13) having an end surface portion (13a) covering an opening of an end portion of the louver (101), and an edge surface portion (13b) projecting from the end surface portion (13a) to be in contact with an inner surface of the louver (101) and having a screw hole (13ba), a bracket (11) having a tip end portion having a through hole (11Ba) communicable with the screw hole (13ba) of the edge surface portion (13b) of the attachment fitting (13), and a base end portion fixable to the beam (1), and a screw (14) inserted to pass through the through hole (11Ba) of the bracket (11) and the louver (101) and threadably engaged in the screw hole (13ba) of the edge surface portion (13b) of the attachment fitting (13).

Description

[Technical Field]

[0001] The present invention relates to a louver mounting holder, and a louver unit and a louver installation method using the same.[Background Art]

[0002] In recent years, in order to achieve building interior with higher designability, a louver having a tubular shape is provided on a ceiling or a wall. Such a louver is installed in a structure such as a ceiling beam or a wall pillar via a bracket or the like. Thus, a louver has a coupling portion that enables the louver to be coupled to a bracket (see Patent Literature 1 and the like).[Citation List][Patent Literature]

[0003] [PTL 1] JP 2013-238064 A[Summary of the Invention][Technical Problem]

[0004] Louvers are made of a lightweight metal such as aluminum; however, in recent years, in order to allow a louver to have lighter weight and better texture, incombustible paper, medium-density fiberboard (MDF), and the like have started to be used. During production, integral formation processing of a coupling portion to be coupled to a bracket is easy to perform in a louver made of metal, but difficult in a louver made of incombustible paper or MDF. Thus, when a louver made of incombustible paper or MDF is installed in a structure such as a beam or a pillar, a bracket having a special shape needs to be prepared and coupled to the louver, requiring high cost and also time and effort.

[0005] Therefore, an object of the present invention is to provide a louver mounting holder and a louver unit and a louver installation method using the louver mounting holder that enable a louver made of a material that is difficult to subject to integral formation processing, such as incombustible paper or MDF, to be easily installed at low cost in a structure such as a ceiling beam or a wall pillar.[Solution to Problem]

[0006] A first louver mounting holder according to the present invention for solving the above problem is a louver mounting holder that mounts and holds a louver having a tubular shape to a structure, the louver mounting holder including: an attachment fitting having an end surface portion that covers an opening of an end portion of the louver, and an edge surface portion that projects from the end surface portion to be in contact with an inner surface of the louver and has a screw hole; a bracket having a tip end portion that has a through hole communicable with the screw hole of the edge surface portion of the attachment fitting, and a base end portion that is fixable to the structure; and a male threaded fastener that is inserted to pass through the through hole of the bracket and the louver and is threadably engaged in the screw hole of the edge surface portion of the attachment fitting.

[0007] A second louver mounting holder according to the present invention is preferably the louver mounting holder including a cover plate that is attached to the attachment fitting to cover the end surface portion of the attachment fitting and a peripheral edge of the opening of the end portion of the louver.

[0008] A third louver mounting holder according to the present invention is preferably the louver mounting holder, in which the bracket includes a tip end member that has the through hole and a communication hole, a base end member that has a communication hole and is fixable to the structure, and a threaded fastener that is inserted into the communication hole of the tip end member and the communication hole of the base end member and fixes the tip end member to the base end member.

[0009] A fourth louver mounting holder according to the present invention is preferably the louver mounting holder, in which the bracket has a plurality of the through holes arranged in parallel to hold a plurality of the louvers in parallel.

[0010] Furthermore, a louver unit according to the present invention for solving the above problem is a louver unit including: a louver that has a tubular shape and is made of incombustible paper or medium-density fiberboard; and the louver mounting holder.

[0011] A louver unit according to the present invention is preferably the louver unit, in which a plurality of the louvers are arranged in parallel, a plurality of the attachment fittings are fitted into a respective plurality of the openings of the louvers, the bracket has a plurality of the through holes arranged in parallel, and a plurality of the male threaded fasteners fix the respective louvers arranged in parallel to the bracket.

[0012] In addition, a first louver installation method according to the present invention for solving the above problem is a louver installation method that uses the first louver mounting holder to mount and hold the louver to the structure, the method including: an attachment fitting attaching step of fitting and attaching the attachment fitting into the opening of the end portion of the louver; a bracket attaching step of inserting the male threaded fastener to pass through the through hole of the tip end portion of the bracket and the louver and threadably engaging the male threaded fastener in the screw hole of the attachment fitting to attach the bracket to the louver; and an installation step of fixing the base end portion of the bracket to the structure to attach the bracket to the structure to install the louver in the structure.

[0013] A second louver installation method according to the present invention is a louver installation method that uses the second louver mounting holder to mount and hold the louver to the structure, the method including: a cover plate attaching step of attaching the cover plate to the end surface portion of the attachment fitting; an attachment fitting attaching step of fitting and attaching the attachment fitting into the opening of the end portion of the louver; a bracket attaching step of inserting the male threaded fastener to pass through the through hole of the tip end portion of the bracket and the louver and threadably engaging the male threaded fastener in the screw hole of the attachment fitting to attach the bracket to the louver; and an installation step of fixing the base end portion of the bracket to the structure to attach the bracket to the structure to install the louver in the structure.

[0014] A third louver installation method according to the present invention is a louver installation method that uses the third louver mounting holder to mount and hold the louver to the structure, the method including: an attachment fitting attaching step of fitting and attaching the attachment fitting into the opening of the end portion of the louver; a tip end member attaching step of inserting the male threaded fastener to pass through the through hole of the tip end member of the bracket and the louver and threadably engaging the male threaded fastener in the screw hole of the attachment fitting to attach the bracket to the louver; a base end member attaching step of fixing the base end member of the bracket to the structure to attach the bracket to the structure; and an installation step of inserting the threaded fastener into the communication hole of the tip end member and the communication hole of the base end member of the bracket and tightening the threaded fastener to fix the tip end member to the base end member to install the louver in the structure.

[0015] A fourth louver installation method according to the present invention is a louver installation method that uses the fourth louver mounting holder to mount and hold the louvers to the structure, the method including: an attachment fitting attaching step of fitting and attaching a plurality of the attachment fittings into a respective plurality of the openings of a plurality of the end portions of the louvers; a bracket attaching step of inserting a plurality of the male threaded fasteners to pass through the respective through holes of the tip end portion of the bracket and the respective louvers and threadably engaging the male threaded fasteners in a respective plurality of the screw holes of the attachment fittings to attach the louvers in parallel to the bracket; and an installation step of fixing the base end portion of the bracket to the structure to attach the bracket to the structure to install the louvers in parallel in the structure.[Advantageous Effects of the Invention]

[0016] A louver mounting holder and a louver unit and a louver installation method using the louver mounting holder according to the present invention enable a louver made of a material that is difficult to subject to integral formation processing, such as incombustible paper or MDF, to be easily installed at low cost in a structure such as a ceiling beam or a wall pillar.[Brief Description of the Drawings]

[0017] Fig. 1 is a partially extracted exploded cross-sectional view of a schematic structure of a first embodiment of a louver unit using a louver mounting holder according to the present invention. Fig. 2 is a view taken along the line II-II indicated by arrows in Fig. 1. Fig. 3 is a flowchart showing the procedure of a louver installation method using the louver mounting holder in Figs. 1 and 2. Fig. 4 is a partially extracted exploded cross-sectional view of a schematic structure of a second embodiment of the louver unit using the louver mounting holder according to the present invention. Fig. 5 is a view taken along the line V-V indicated by arrows in Fig. 4. Fig. 6 is a flowchart showing the procedure of a louver installation method using the louver mounting holder in Figs. 4 and 5. [Description of the Embodiments]

[0018] Embodiments of a louver mounting holder and a louver unit and a louver installation method using the louver mounting holder according to the present invention will be described with reference to the drawings. The present invention is not limited only to the embodiments described below with reference to the drawings, and various technical matters described in the embodiments can be appropriately combined, replaced, or omitted as necessary.[First embodiment]

[0019] A first embodiment of a louver mounting holder and a louver unit and a louver installation method using the louver mounting holder according to the present invention will be described with reference to Figs. 1 to 3.

[0020] As shown in Figs. 1 and 2, a base end portion (upper end portion in Figs. 1 and 2) of a bracket 11 that has a U-shape and is made of metal is fixed with a plurality of wood screws 12 to a ceiling beam 1 that is a structure. On the other hand, an attachment fitting 13 that has a U-shape and is made of metal is fitted into an opening 101a of an end portion of a louver 101 that is made of incombustible paper and has a quadrangular tubular shape (for example, with a height of 90 mm, a width of 30 mm, and a length of 2 to 3 m) to close the opening.

[0021] The louver 101 is oriented so that the longitudinal direction of the louver 101 coincides with the width direction of the bracket 11 (horizontal direction in Fig. 1), and an outer surface of the louver 101 on the end portion side is in contact with a tip end portion (lower end portion in Figs. 1 and 2) of the bracket 11.

[0022] A plurality of screws 14 that are male threaded fasteners are inserted into the tip end portion (lower end portion in Figs. 1 and 2) of the bracket 11, and the screws 14 are inserted to pass through the louver 101 and are threadably engaged with the attachment fitting 13. Thus, the louver 101 is held between the tip end portion of the bracket 11 and the attachment fitting 13, and is fixed and supported by the beam 1 via the bracket 11. In the end portion of the louver 101, a peripheral edge of the opening 101a and the attachment fitting 13 are covered by a cover plate 15 that is made of incombustible paper. The cover plate 15 is attached to the attachment fitting 13 with a plurality of small screws 16.

[0023] The attachment fitting 13 is fixed to the louver 101 with a screw 17. The members will be described in more detail.

[0024] The bracket 11 is a U-shaped member composed of a combination of a base end metal fitting 11A that is a base end member and has an L-shape and a tip end metal fitting 11B that is a tip end member and has an L-shape. The base end metal fitting 11A constitutes the base end portion of the bracket 11, and has a plurality of through holes 11Aa for attaching and fixing the base end metal fitting 11A to the beam 1 with the plurality of wood screws 12. The tip end metal fitting 11B constitutes the tip end portion of the bracket 11, and has a plurality of through holes 11Ba for attaching and fixing the tip end metal fitting 11B to the attachment fitting 13 via the louver 101 with the plurality of screws 14.

[0025] The base end metal fitting 11A and the tip end metal fitting 11B are arranged to partially overlap with each other between the base end portion and the tip end portion of the bracket 11, and the overlapping portion has a plurality of communication holes 11Ab and 11Bb that communicate with each other. A bolt 11C that is a threaded fastener is inserted into the communication holes 11Ab and 11Bb, and is threadably engaged with a nut 11D and tightened to integrally fix the base end metal fitting 11A to the tip end metal fitting 11B.

[0026] The attachment fitting 13 has an end surface portion 13a that covers the opening 101a of the end portion of the louver 101, and edge surface portions 13b and 13c that project from an end portion of the end surface portion 13a on one side (upper side in Figs. 1 and 2) and an end portion of the end surface portion 13a on the other side (lower side in Figs. 1 and 2), respectively, and are in contact with an inner surface of the louver 101. The end surface portion 13a has screw holes 13aa in which the small screws 16 are threadably engaged. The edge surface portion 13b has a plurality of screw holes 13ba that communicate with the through holes 11Ba of the tip end metal fitting 11B of the bracket 11 and in which the screws 14 are threadably engaged. The edge surface portion 13c has a screw hole 13ca in which the screw 17 is threadably engaged.

[0027] The cover plate 15 has a plurality of through holes 15a for fastening and fixing the cover plate 15 with the plurality of small screws 16 that are threadably engaged in the plurality of screw holes 13aa of the end surface portion 13a of the attachment fitting 13. The cover plate 15 covers the entire end surface portion 13a of the attachment fitting 13 and also covers the peripheral edge of the opening 101a of the louver 101 to allow a portion of the louver 101 at which the opening 101a is located to have the same pattern as the outer surface of the louver 101, enabling the entire louver 101 to have a uniform appearance.

[0028] Figs. 1 and 2 show only one end portion side of the louver 101 in the longitudinal direction; however, the other end portion side of the louver 101 in the longitudinal direction also has the same structure.

[0029] In the present embodiment, the bracket 11, the wood screws 12, the attachment fitting 13, the screws 14, the cover plate 15, the small screws 16, the screw 17, and the like constitute a louver mounting holder 10, and the louver mounting holder 10, the louver 101, and the like constitute a louver unit 100.

[0030] Next, a louver installation method using the louver mounting holder 10 according to the present embodiment will be described with reference to Fig. 3.

[0031] First, the cover plate 15 is overlapped with the end surface portion 13a of the attachment fitting 13, and the small screws 16 are inserted into the through holes 15a of the cover plate 15, and are threadably engaged in the screw holes 13aa of the end surface portion 13a of the attachment fitting 13 and tightened to attach the cover plate 15 to the attachment fitting 13 (cover plate attaching step S11).

[0032] Subsequently, the edge surface portions 13b and 13c of the attachment fitting 13 are inserted into the opening 101a of the louver 101 and the attachment fitting 13 is fitted into the opening 101a, and the screw 17 is inserted to pass through the louver 101, and is threadably engaged in the screw hole 13ca of the edge surface portion 13c and tightened to attach the attachment fitting 13 to the louver 101 (attachment fitting attaching step S12).

[0033] Next, the screws 14 are inserted into the through holes 11Ba of the tip end metal fitting 11B of the bracket 11 to pass through the louver 101, and are threadably engaged in the screw holes 13ba of the edge surface portion 13b of the attachment fitting 13 and tightened to attach the tip end metal fitting 11B to the louver 101 via the attachment fitting 13 (tip end metal fitting (member) attaching step S13).

[0034] Then, the wood screws 12 are inserted into the through holes 11Aa of the base end metal fitting 11A of the bracket 11, and are engaged in the beam 1 and tightened to attach the base end metal fitting 11A to the beam 1 (base end metal fitting (member) attaching step S14).

[0035] Finally, the base end metal fitting 11A and the tip end metal fitting 11B of the bracket 11 are overlapped with each other so that the communication hole 11Ab of the base end metal fitting 11A communicates with the communication hole 11Bb of the tip end metal fitting 11B, and the bolt 11C is inserted into the communication hole 11Ab and the communication hole 11Bb, and is threadably engaged with the nut 11D and tightened to mount and hold the louver 101 to the beam 1 via the bracket 11 to install the louver 101 in the beam 1 (installation step S15).

[0036] In the present embodiment, when the louver 101 is made of incombustible paper and integral formation processing of a coupling portion of the louver 101 during production is difficult, it is possible to mount and hold the louver 101 to the beam 1 with the louver mounting holder 10 composed of only members having a general shape using only a general tool.

[0037] Therefore, the present embodiment makes it possible to easily install the louver 101 in the beam 1 at low cost.

[0038] The cover plate 15 covers the entire end surface portion 13a of the attachment fitting 13 and also covers the peripheral edge of the opening 101a of the louver 101 to allow a portion of the louver 101 at which the opening 101a is located to have the same pattern as the outer surface of the louver 101, enabling the entire louver 101 to have a uniform appearance.

[0039] The base end metal fitting 11A of the bracket 11 is attached and fixed to the beam 1 with the wood screws 12, and the tip end metal fitting 11B of the bracket 11 is attached and fixed to the attachment fitting 13 via the louver 101 with the screws 14, and then the base end metal fitting 11A and the tip end metal fitting 11B of the bracket 11 are fastened to each other with the bolt 11C and the nut 11D to install the louver 101 in the beam 1. Therefore, as compared with the case where a bracket provided in a louver is directly fixed to a beam or the case where a bracket provided in a beam is directly fixed to a louver, it is possible to easily install a louver in a beam, achieving higher workability.[Second embodiment]

[0040] A second embodiment of the louver mounting holder and the louver unit and the louver installation method using the louver mounting holder according to the present invention will be described with reference to Figs. 4 to 6. However, the same components as those of the embodiment described above are denoted by the same reference signs, and redundant description is omitted.

[0041] As shown in Figs. 4 and 5, a base end portion (upper end portion in Figs. 4 and 5) of a bracket 21 that has a substantially Z-shape and is made of metal is fixed to the beam 1 with a wood screw 12. The bracket 21 has a longer (several times to more than ten time longer) length in the width direction (horizontal direction in Fig. 5) than the length of the bracket 11 described in the above embodiment in the width direction (horizontal direction in Fig. 1).

[0042] A plurality of louvers 101 are oriented so that the transverse direction (width direction) of the louvers 101 coincides with the width direction of the bracket 21 (horizontal direction in Fig. 5) and are arranged in parallel in the width direction of the bracket 21 (horizontal direction in Fig. 5), and outer surfaces of the louvers 101 on the end portion side are in contact with a tip end portion (lower end portion in Figs. 4 and 5) of the bracket 21. That is, the plurality of louvers 101 are arranged in parallel. Accordingly, a plurality of attachment fittings 13 are fitted into the respective openings 101a of the louvers 101.

[0043] A plurality of screws 14 are inserted into the tip end portion (lower end portion in Figs. 4 and 5) of the bracket 21 at predetermined intervals in the width direction (horizontal direction in Fig. 5), and the screws 14 are inserted to pass through the respective louvers 101 and are threadably engaged with the attachment fittings 13. Thus, the plurality of louvers 101 are held between the tip end portion of the bracket 21 and the attachment fittings 13, and are fixed and supported in parallel by the beam 1 via the bracket 21. Members different from those of the above embodiment will be described in more detail.

[0044] The bracket 21 is a substantially Z-shaped member composed of a combination of a base end metal fitting 21A that is a base end member and has an L-shape and a tip end metal fitting 21B that is a tip end member and has an L-shape. The base end metal fitting 21A constitutes the base end portion of the bracket 21, and has a through hole 21Aa for attaching and fixing the base end metal fitting 21A to the beam 1 with the wood screw 12. The tip end metal fitting 21B constitutes the tip end portion of the bracket 21, and has a plurality of through holes 21Ba for attaching and fixing the tip end metal fitting 21B to the attachment fittings 13 via the louvers 101 with the plurality of screws 14. The through holes 21Ba are arranged in parallel at predetermined intervals in the width direction (horizontal direction in Fig. 5). That is, the plurality of screws 14 fix the respective louvers 101 arranged in parallel to the tip end metal fitting 21B.

[0045] The base end metal fitting 21A and the tip end metal fitting 21B are arranged to partially overlap with each other between the base end portion and the tip end portion of the bracket 21, and the overlapping portion has communication holes 21Ab and 21Bb that communicate with each other. A bolt 11C is inserted into the communication holes 21Ab and 21Bb, and is threadably engaged with a nut 11D and tightened to integrally fix the base end metal fitting 21A to the tip end metal fitting 21B.

[0046] Fig. 4 shows only one end portion side of the louvers 101 in the longitudinal direction; however, the other end portion side of the louvers 101 in the longitudinal direction also has the same structure. Fig. 5 shows only one end portion side of the bracket 21 in the width direction; however, the other end portion side of the bracket 21 in the width direction also has the same structure.

[0047] In the present embodiment, the bracket 21, the wood screw 12, the attachment fittings 13, the screws 14, the cover plate 15, the small screws 16, the screw 17, and the like constitute a louver mounting holder 20, and the louver mounting holder 20, the louvers 101, and the like constitute a louver unit 200.

[0048] That is, in the above embodiment, the bracket 11 capable of holding the single louver 101 is used to constitute the louver unit 100; however, in the present embodiment, the bracket 21 capable of holding the plurality of louvers 101 in parallel is used to constitute the louver unit 200.

[0049] Next, an installation method using the louver mounting holder 20 according to the present embodiment will be described with reference to Fig. 6.

[0050] First, as in the above embodiment, the cover plate 15 is attached to the attachment fittings 13 (cover plate attaching step S11), and the attachment fittings 13 are attached to the louvers 101 (attachment fitting attaching step S12).

[0051] Next, a screw 14 is inserted into one of the through holes 21Ba of the tip end metal fitting 21B of the bracket 21 to pass through one of the louvers 101, and is threadably engaged in the screw hole 13ba of the edge surface portion 13b of the corresponding one of the attachment fittings 13 and tightened. This is repeated for each of the plurality of louvers 101 arranged at predetermined intervals in the width direction of the bracket 21 to fix and attach the plurality of louvers 101 arranged in parallel to the tip end metal fitting 21B (tip end metal fitting (member) attaching step S23).

[0052] Then, the wood screw 12 is inserted into the through hole 21Aa of the base end metal fitting 21A of the bracket 21, and is engaged in the beam 1 and tightened to fix and attach the base end metal fitting 21A to the beam 1 (base end metal fitting (member) attaching step S24).

[0053] Finally, the base end metal fitting 21A and the tip end metal fitting 21B of the bracket 21 are overlapped with each other so that the communication hole 21Ab of the base end metal fitting 21A communicates with the communication hole 21Bb of the tip end metal fitting 21B, and the bolt 11C is inserted into the communication hole 21Ab and the communication hole 21Bb, and is threadably engaged with the nut 11D and tightened. Thus, the plurality of louvers 101 are mounted and held in parallel to the beam 1 via the bracket 21 (installation step S25).

[0054] That is, in the above embodiment, the louver unit 100 composed of the single louver 101 is installed in the beam 1; however, in the present embodiment, the louver unit 200 in which the plurality of louvers 101 are arranged in parallel is installed in the beam 1. Thus, the plurality of louvers 101 can be collectively assembled in advance in a precut processing factory or at an installation site and then installed in the ceiling beam 1.

[0055] Therefore, the present embodiment provides the same effects as the above embodiment, and also enables the plurality of louvers 101 to be quickly installed, achieving even lower cost and higher work efficiency.[Other embodiments]

[0056] In the above embodiments, the cover plate attaching step S11 is performed before the attachment fitting attaching step S12; however, the present invention is not limited to this. As another embodiment, for example, the cover plate attaching step S11 can be performed between the attachment fitting attaching step S12 and the tip end metal fitting attaching step S13 or S23, between the tip end metal fitting attaching step S13 and the base end metal fitting attaching step S14 or between the tip end metal fitting attaching step S23 and the base end metal fitting attaching step S24, after the base end metal fitting attaching step S14 or S24, or the like. However, as in the above embodiments, the method in which the cover plate attaching step S11 is performed before the attachment fitting attaching step S12 enables the one or more louvers 101 to be efficiently installed, and thus is preferable.

[0057] In the above embodiments, the base end metal fitting attaching steps S14 and S24 are performed after the tip end metal fitting attaching steps S13 and S23, respectively; however, the present invention is not limited to this. As another embodiment, for example, the tip end metal fitting attaching steps S13 and S23 can be performed after the base end metal fitting attaching steps S14 and S24, respectively. However, as in the above embodiments, the methods in which the base end metal fitting attaching steps S14 and S24 are performed after the tip end metal fitting attaching steps S13 and S23, respectively, enable the one or more louvers 101 to be efficiently installed, and thus are preferable.

[0058] The above embodiments use the bracket 11 in which the base end metal fitting 11A is fixed to the tip end metal fitting 11B with the bolt 11C and the nut 11D or the bracket 21 in which the base end metal fitting 21A is fixed to the tip end metal fitting 21B with the bolt 11C and the nut 11D; however, the present invention is not limited to this. As another embodiment, for example, it is possible to use a bracket composed of a single member in which a base end portion and a tip end portion are integrated together and no fastening with a threaded fastener is required.

[0059] When such a bracket composed of a single member is used to install a louver 101 in the beam 1, the screws 14 are inserted to pass through the respective through holes of a tip end portion of the bracket and the louver 101, and the screws 14 are threadably engaged in the screw holes 13ba of the edge surface portion 13b of the attachment fitting 13 to attach the bracket to the louver 101 (bracket attaching step), and a base end portion of the bracket is fixed to the beam 1 to attach the bracket to the beam 1 to install the louver 101 in the beam 1 (installation step).

[0060] Therefore, it is possible to eliminate the need for inserting the bolt 11C into the communication hole 11Ab of the base end metal fitting 11A and the communication hole 11Bb of the tip end metal fitting 11B or the communication hole 21Ab of the base end metal fitting 21A and the communication hole 21Bb of the tip end metal fitting 21B and fastening the bolt 11C with the nut 11D, thus requiring a small number of working steps as compared with the above embodiments.

[0061] However, in the above embodiments, the tip end metal fittings 11B and 21B to which the one or more louvers 101 are attached are fixed with the bolt 11C and the nut 11D to the base end metal fittings 11A and 21A attached to the beam 1, respectively. Therefore, as compared with the case where a bracket to which the one or more louvers 101 are attached is fixed to the beam 1, the above embodiments achieve high workability, and thus are preferable.

[0062] In the above embodiments, the one or more louvers 101 are installed in the ceiling beam 1; however, the present invention is not limited to this. As in the above embodiments, the present invention is applicable, as another embodiment, for example, to a structure such as building interior including a wall pillar.

[0063] In the above embodiments, the one or more louvers 101 are made of incombustible paper; however, the present invention is not limited to this. As in the above embodiments, the present invention is applicable, as another embodiment, for example, to a louver made of a material that is difficult to subject to integral formation processing, such as medium-density fiberboard (MDF), and also a louver made of a metal material or the like that can easily be subjected to integral formation processing. In that case, it is preferable to use a cover plate made of the same material as the louver.

[0064] In the above embodiments, the one or more louvers 101 have a quadrangular tubular shape; however, the present invention is not limited to this. As in the above embodiments, the present invention is applicable, as another embodiment, for example, to a louver having a tubular shape such as a cylindrical shape. In that case, an attachment fitting and a cover plate have a shape corresponding to the shape of an opening of an end portion of the louver.

[0065] In the above embodiments, the cover plate is used; however, the present invention is not limited to this. As another embodiment, the cover plate can be omitted, for example, when a portion around the opening of the end portion of the louver cannot be visually recognized due to the installation situation.[Industrial Applicability]

[0066] A louver mounting holder and a louver unit and a louver installation method using the louver mounting holder according to the present invention enable a louver made of a material that is difficult to subject to integral formation processing, such as incombustible paper or MDF, to be easily installed at low cost in a structure such as a ceiling beam or a wall pillar, and thus can be extremely beneficially used in various industries including construction industry.[Reference Signs List]

[0067] 1 Beam 10, 20 Louver mounting holder 11, 21 Bracket 11A, 21A Base end metal fitting 11Aa, 21Aa Through hole 11Ab, 21Ab Communication hole 11B, 21B Tip end metal fitting 11Ba, 21Ba Through hole 11Bb, 21Bb Communication hole 11C Bolt 11D Nut 12 Wood screw 13 Attachment fitting 13a End surface portion 13aa Screw hole 13b, 13c Edge surface portion 13ba, 13ca Screw hole 14 Screw 15 Cover plate 15a Through hole 16 Small screw 17 Screw 100, 200 Louver unit 101 Louver 101a Opening

Claims

1. A louver mounting holder that mounts and holds a louver having a tubular shape to a structure, the louver mounting holder comprising: an attachment fitting having an end surface portion that covers an opening of an end portion of the louver, and an edge surface portion that projects from the end surface portion to be in contact with an inner surface of the louver and has a screw hole; a bracket having a tip end portion that has a through hole communicable with the screw hole of the edge surface portion of the attachment fitting, and a base end portion that is fixable to the structure; and a male threaded fastener that is inserted to pass through the through hole of the bracket and the louver and is threadably engaged in the screw hole of the edge surface portion of the attachment fitting.

2. The louver mounting holder according to claim 1, comprising a cover plate that is attached to the attachment fitting to cover the end surface portion of the attachment fitting and a peripheral edge of the opening of the end portion of the louver.

3. The louver mounting holder according to claim 1, wherein the bracket includes a tip end member that has the through hole and a communication hole, a base end member that has a communication hole and is fixable to the structure, and a threaded fastener that is inserted into the communication hole of the tip end member and the communication hole of the base end member and fixes the tip end member to the base end member.

4. The louver mounting holder according to claim 1, wherein the bracket has a plurality of the through holes arranged in parallel to hold a plurality of the louvers in parallel.

5. A louver unit comprising: a louver that has a tubular shape and is made of incombustible paper or medium-density fiberboard; and the louver mounting holder according to any one of claims 1 to 3.

6. The louver unit according to claim 5, wherein a plurality of the louvers are arranged in parallel, a plurality of the attachment fittings are fitted into a respective plurality of the openings of the louvers, the bracket has a plurality of the through holes arranged in parallel, and a plurality of the male threaded fasteners fix the respective louvers arranged in parallel to the bracket.

7. A louver installation method that uses the louver mounting holder according to claim 1 to mount and hold the louver to the structure, the method comprising: an attachment fitting attaching step of fitting and attaching the attachment fitting into the opening of the end portion of the louver; a bracket attaching step of inserting the male threaded fastener to pass through the through hole of the tip end portion of the bracket and the louver and threadably engaging the male threaded fastener in the screw hole of the attachment fitting to attach the bracket to the louver; and an installation step of fixing the base end portion of the bracket to the structure to attach the bracket to the structure to install the louver in the structure.

8. A louver installation method that uses the louver mounting holder according to claim 2 to mount and hold the louver to the structure, the method comprising: a cover plate attaching step of attaching the cover plate to the end surface portion of the attachment fitting; an attachment fitting attaching step of fitting and attaching the attachment fitting into the opening of the end portion of the louver; a bracket attaching step of inserting the male threaded fastener to pass through the through hole of the tip end portion of the bracket and the louver and threadably engaging the male threaded fastener in the screw hole of the attachment fitting to attach the bracket to the louver; and an installation step of fixing the base end portion of the bracket to the structure to attach the bracket to the structure to install the louver in the structure.

9. A louver installation method that uses the louver mounting holder according to claim 3 to mount and hold the louver to the structure, the method comprising: an attachment fitting attaching step of fitting and attaching the attachment fitting into the opening of the end portion of the louver; a tip end member attaching step of inserting the male threaded fastener to pass through the through hole of the tip end member of the bracket and the louver and threadably engaging the male threaded fastener in the screw hole of the attachment fitting to attach the bracket to the louver; a base end member attaching step of fixing the base end member of the bracket to the structure to attach the bracket to the structure; and an installation step of inserting the threaded fastener into the communication hole of the tip end member and the communication hole of the base end member of the bracket and tightening the threaded fastener to fix the tip end member to the base end member to install the louver in the structure.

10. A louver installation method that uses the louver mounting holder according to claim 4 to mount and hold the louvers to the structure, the method comprising: an attachment fitting attaching step of fitting and attaching a plurality of the attachment fittings into a respective plurality of the openings of a plurality of the end portions of the louvers; a bracket attaching step of inserting a plurality of the male threaded fasteners to pass through the respective through holes of the tip end portion of the bracket and the respective louvers and threadably engaging the male threaded fasteners in a respective plurality of the screw holes of the attachment fittings to attach the louvers in parallel to the bracket; and an installation step of fixing the base end portion of the bracket to the structure to attach the bracket to the structure to install the louvers in parallel in the structure.

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