Ceiling opening protection device

Abstract

To provide a curing device for a ceiling opening that can effectively improve workability and suppress the increase of cost, and can obtain better performance in terms of safety and appearance.SOLUTION: A curing device 1 is a device for temporarily restoring a ceiling part 50 by temporarily closing an opening part 51a when performing construction using the opening part 51a after forming the opening part 51a on a plate-shaped ceiling board 51 constituting the ceiling part 50 of an existing construction. The curing device 1 includes: a pair of parallel rails 2 arranged at positions sandwiching the opening part 51a; a hanging member movable along an extending direction of the rails 2; and a curtain 4 expandable and foldable by the movement of the hanging member along the rails 2. Since the opening part 51a can be opened and closed by extending and folding the curtain 4, it is very easy to temporarily restore the ceiling part 50 by closing the opening part 51a.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a curing device for forming an opening in a ceiling board and temporarily closing the opening to temporarily restore the ceiling when construction work is to be carried out using the opening. [Background technology]

[0002] Conventionally, openings have been created in the ceiling boards that make up the ceiling of an existing building by, for example, demolishing a portion of the ceiling boards, and then using the openings to carry out specified construction work (such as work related to pipes and ducts installed above the ceiling). Here, if the construction work takes a certain amount of time to complete and the existing building on which the work is being carried out is currently being used by regular users such as office workers and business associates (this is called "vacant-use construction"), the work is not carried out when the existing building is in use, such as on weekdays, but is carried out only when the existing building is not being used by regular users, such as on Saturdays, Sundays, or at night (hereinafter referred to as "work possible periods").

[0003] However, if openings are left open during the above-mentioned construction work, there is a risk that when the existing building is in use, such as on weekdays, it will impair its appearance, cause damage to the existing finishes (existing interior) underneath, and reduce safety. Therefore, when the existing building is in use, such as on weekdays, it is necessary to temporarily close the openings as a protective measure and temporarily restore the ceiling.

[0004] Conventionally, as a method for temporarily closing an opening, there is a method, as shown in Fig. 7, in which a predetermined plate material 110 (such as so-called plastic plywood) is attached to a ceiling board 100 or a base material 101 (such as a rafter or rafter support) for fixing the ceiling board 100 using, for example, screws or masking tape, and the opening 100a is closed by the plate material 110. Also, as a method for fixing a plate material to a ceiling board or the like, it is possible to use, for example, a hook-and-loop fastener (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Publication No. 5-118096 Summary of the Invention [Problem to be solved by the invention]

[0006] However, the method of closing the opening with the above-mentioned boards requires the tedious and time-consuming work of removing the boards when construction resumes and then reinstalling them when construction temporarily stops, which must be done every time construction is possible. For example, some construction projects may require work every weekend for several months, resulting in the need for this time-consuming work seven or eight times or more. This may reduce work efficiency. Furthermore, the need for this kind of work every time construction is possible increases the costs associated with installing and removing the boards, which can ultimately increase construction costs.

[0007] Furthermore, if there are only a few places where the boards are fixed with screws, etc., there is a risk that all or part of the boards may fall or sag when the existing building is in use, such as on weekdays. Falling or sagging boards are undesirable in terms of safety and appearance.

[0008] In addition, repeated removal and installation of the panels may cause them to become damaged or deteriorate, which may result in the panels no longer being able to adequately prevent the appearance of the opening from being impaired by closing it.

[0009] The present invention has been made in consideration of the above circumstances, and its purpose is to provide a ceiling opening protection device that can effectively improve workability and prevent cost increases, while also achieving better performance in terms of safety, appearance, and prevention of damage to existing interior furnishings. [Means for solving the problem]

[0010] The following describes each of the means suitable for achieving the above object, with specific effects of the corresponding means added as necessary.

[0011] Means 1. A ceiling opening protection device for temporarily closing an opening in a plate-shaped ceiling board that constitutes the ceiling of an existing building and temporarily restoring the ceiling when carrying out construction work using the opening. a pair of parallel rails disposed on either side of the opening in the ceiling; a suspension member attached to each of the pair of rails and movable along the extending direction of the pair of rails; a curtain whose both widthwise end edge portions are suspended by the suspension members, and which can be extended and folded by movement of the suspension members along the rails; The opening can be closed by extending the curtain. And, The rail is a base material located behind the existing ceiling board and from which the ceiling board is hung, and is attached to a base material that remains on the edge or side of the opening of the ceiling board after the portion corresponding to the opening has been removed. A ceiling opening protection device characterized by:

[0012] According to the above-mentioned method 1, the opening in the ceiling board can be temporarily closed by extending the curtain. Therefore, the opening can be opened and closed very easily, and once the rails, curtains, etc. are installed at the start of construction, the troublesome work of opening and closing the opening (such as removing and reinstalling boards) does not need to be repeated (for example, every time construction is possible). This effectively improves the workability of protecting the construction area. Furthermore, by eliminating the need for repeated work, the cost of opening and closing the opening, i.e., the cost of protection, can be reduced. As a result, the increase in construction costs can be effectively suppressed.

[0013] Furthermore, sheet curtains are relatively lighter than boards, and the curtains are suspended by hanging members. This makes it extremely unlikely that all or part of the curtain will fall or sag when the existing building is in use, such as on weekdays. This ensures good safety and more reliably prevents deterioration of the appearance and damage to the existing interior.

[0014] In addition, even if the opening is repeatedly opened and closed, the curtain is hardly damaged or deteriorated, so the effect of preventing deterioration in appearance can be more reliably exerted for a long period of time.

[0016] Also, The above means 1 According to the law, the rails are attached to the underlying material (such as a joist or joist support) that was originally located behind the ceiling board, and in particular to the underlying material that remains on the edge of the opening or on the side nearby. This makes the rails very difficult to see, which improves the appearance.

[0017] means 2 The rail is disposed in the opening, and at least a portion of the rail is positioned above the lower surface of the ceiling board. 1 A curing device for a ceiling opening as described in claim 1.

[0018] The above means 2 According to the document, the rail is disposed (recessed) in the opening, with at least a portion of the rail positioned above the underside of the ceiling board. This allows the curtain to be closer to the opening when the opening is closed. Therefore, the opening can be more reliably made invisible or difficult to see when viewed from below. As a result, it is possible to improve the appearance and more effectively prevent the lower interior (existing interior) from being soiled by dust and the like.

[0019] means 3The curtain is configured so that at least the portion of the curtain located between both end edge portions in the width direction hung by the hanging member is stretched along the width direction of the curtain. 1 or 2 A curing device for a ceiling opening as described in claim 1.

[0020] The above means 3 According to the document, for example, by making the width of at least the portion of the curtain located between the portions hung by the hanging members approximately equal to the distance between the rails, at least the portion of the curtain located between the both widthwise edge portions is stretched (applied tension) along the width direction of the curtain. Therefore, when the opening is closed, it is possible to make it less likely for the curtain to sag due to its own weight. As a result, a better appearance can be obtained. [Brief explanation of the drawings]

[0021] [Figure 1] 10 is a schematic perspective view showing the ceiling portion viewed from below when the opening portion is closed. FIG. [Figure 2] FIG. 2 is a schematic perspective view showing the ceiling portion as viewed from below when the opening portion is open. [Figure 3] 10 is a schematic perspective view showing the ceiling portion viewed from above when the opening portion is closed. FIG. [Figure 4] FIG. 2 is a schematic perspective view showing the ceiling portion as viewed from above when the opening portion is open. [Figure 5] FIG. 2 is a partially enlarged perspective schematic view showing the rails, the hanging members, and the like. [Figure 6] FIG. 2 is a partially enlarged schematic cross-sectional view showing the rails, the hanging members, and the like. [Figure 7] FIG. 1 is a schematic perspective view illustrating a conventional method for temporarily restoring a ceiling portion. DETAILED DESCRIPTION OF THE INVENTION

[0022] An embodiment will be described below with reference to the drawings. As shown in Figures 1 and 2, a ceiling opening curing device 1 (hereinafter simply referred to as "curing device 1") is a device for forming an opening 51a in a ceiling board 51 constituting a ceiling portion 50 of an existing building, and then temporarily closing the opening 51a to temporarily restore the ceiling portion 50 when performing construction work using the opening 51a. The existing building is currently used by ordinary users such as office workers and business associates, and is, for example, a relatively large building. Prior to describing the curing device 1, the ceiling portion 50 on which the curing device 1 is installed will first be described.

[0023] As shown in Figures 3 and 4, the ceiling section 50 includes a plate-shaped ceiling board 51 and a base material 52 for fixing the ceiling board 51. The ceiling board 51 has a rectangular opening 51a formed by dismantling a portion of it. This opening 51a is used when carrying out construction work on various pieces of equipment disposed behind the ceiling board 51. The shape of the opening 51a can be changed as appropriate.

[0024] In this embodiment, opening 51a is formed corresponding to a location (such as a corridor or passageway connecting rooms) where equipment (such as refrigerant piping) related to devices of multiple systems (such as air conditioners) is concentrated. Therefore, opening 51a can be commonly used when performing work related to devices of these multiple systems (such as repair work on air conditioners) for each system, regardless of which system is being worked on.

[0025] On the other hand, if it takes a certain amount of time (for example, two or three months) to complete the construction of the equipment related to all the systems, the existing building is currently in use, and therefore the construction (work) can only be carried out when the existing building is not in use (hereinafter referred to as "construction possible periods"), such as on Saturdays, Sundays, or at night. Furthermore, if opening 51a is located in a busy passageway, there will be an unspecified number of passersby, some of whom will be concerned about appearances and others about safety, and the people carrying out the construction will have to be careful about protection.

[0026] While the opening 51a can be used during each construction period, creating a new opening 51a in the ceiling board 51 or restoring the ceiling board 51 every time a construction period is possible (e.g., every weekend) is undesirable in terms of labor and material costs, construction time, and other factors. Leaving the opening 51a open could potentially result in a deterioration in the appearance and safety of the existing building when used by regular users. Furthermore, the construction company would not provide the necessary protective measures to prevent damage and soiling to the constructed or installed items and to prevent hazardous accidents. Therefore, a protective device 1 is provided to temporarily close the opening 51a and temporarily restore the ceiling 50 each time construction is temporarily completed during each construction period. The protective device 1 is installed, for example, during the first construction period and removed during the last construction period.

[0027] Returning to the explanation of the ceiling portion 50, the base material 52 is provided on the back (above) of the ceiling board 51, and includes a joist 52a and a joist support 52b.

[0028] The rafters 52a are rod-shaped members that form the framework of the base for attaching the ceiling boards 51, and the ceiling boards 51 are fastened to the rafters 52a with iron screws or the like. A plurality of rafters 52a are provided, and are arranged parallel to each other. In this embodiment, the opening 51a is formed between two rafters 52a and immediately adjacent to these rafters 52a, and the long sides of the opening 51a extend along these rafters 52a.

[0029] The soffit support 52b is a rod-shaped member that supports the soffit 52a and is fixed to the soffit 52a. Multiple soffit supporters 52b are arranged parallel to each other and extend perpendicular to the soffit 52a. The soffit support 52b is suspended by predetermined suspension bolts 53, thereby suspending and supporting the ceiling board 51 from above. In this embodiment, for smooth construction, at least the portion of the soffit support 52b located vertically above the opening 51a is cut and removed. Furthermore, the portion of the soffit 52a that was suspended by the removed soffit support 52b located vertically above the opening 51a is also cut and removed. Of course, the soffit support 52b and the soffit 52a are restored after construction is completed.

[0030] 3, 5, and 6, the opening 51a may be opened so that the ceiling board 51 is left inside the rafters 52a, i.e., the rafters 52a are not visible from below. Furthermore, although not shown, when the ends of two ceiling boards are fastened to the rafters 52a in terms of the overall fastening and joint alignment of the ceiling board 51, when the opening 51a is provided, the ceiling board 51 is removed from its end without cutting it, with the intention of utilizing the original rafters 52a, so that about half the width of the rafters 52a may be visible from below.

[0031] Next, we will explain the protective device 1. As shown in FIGS.

[0032] The rails 2 are so-called curtain rails, and support the hanging member 3 in a manner that allows it to move along its own longitudinal direction. A pair of rails 2 are provided at positions on either side of an opening 51a in the ceiling portion 50. As shown in FIGS. 5 and 6, each rail 2 is attached to a base material 52 (in this embodiment, a joist 52a) via a predetermined interposition member 5. That is, each rail 2 is attached to the base material 52 located behind the existing ceiling board 51 and from which the ceiling board 51 is hung, and is attached to a portion of the base material 52 remaining at the edge or side of the opening 51a of the ceiling board 51 after the portion corresponding to the opening 51a has been removed. Note that the rails 2 may also be attached directly to the base material 52 without the interposition member 5.

[0033] Furthermore, the rail 2 is disposed in the opening 51a (entering the opening 51a). At least a portion of the rail 2 is positioned above the lower surface of the ceiling board 51.

[0034] A plurality of hanging members 3 are attached to each of a pair of rails 2, and each includes a wheel portion 31 supported by the rail 2 and a hook portion 32 that protrudes below the lower surface of the rail 2. The rolling of the wheel portion 31 relative to the rail 2 allows the hanging members 3 to move along the direction in which the rail 2 extends.

[0035] The curtain 4 is made of a rectangular sheet member that is slightly larger than the opening 51a. The curtain 4 is suspended at both widthwise edge portions by a plurality of suspension members 3 (particularly hook portions 32).

[0036] Furthermore, the curtain 4 can be extended and folded by moving the hanging member 3 along the rail 2. When the curtain 4 is extended, the opening 51a can be closed (see FIGS. 1 and 3), and when the curtain 4 is folded, at least a portion of the opening 51a can be opened (see FIGS. 2 and 4). In this embodiment, the extended curtain 4 spreads out flat, but it may also be configured to spread out in a slightly wavy manner.

[0037] In addition, for example, by making the width of the portion of the curtain 4 located between at least the portions hung by the hanging members 3 approximately equal to the distance between the two rails 2, the portion of the curtain 4 located between at least the end edge portions of the width direction hung by the hanging members 3 is stretched along the width direction of the curtain 4.

[0038] As described above in detail, according to this embodiment, the opening 51a can be opened and closed very easily. Furthermore, once the rail 2, curtain 4, etc. are installed at the start of construction (e.g., during the first possible construction period), there is no need to repeatedly (e.g., each time the construction period begins) perform the tedious work of opening and closing the opening 51a (e.g., removing and reinstalling board materials such as plastic plywood). This effectively improves the workability of protecting the construction area. Furthermore, since the need for repeated work is eliminated, the cost of opening and closing the opening 51a, i.e., the cost of protection, can be reduced. As a result, increases in construction costs can be effectively suppressed.

[0039] Furthermore, the curtain 4 is relatively lightweight and is configured to be hung by the hanging member 3. Therefore, when the existing building is in use, such as on weekdays, it is extremely unlikely that all or part of the curtain 4 will fall or sag. This ensures good safety and more reliably prevents deterioration of the appearance and soiling of the existing interior.

[0040] In addition, even if the opening 51a is repeatedly opened and closed during the construction period (for example, two or three months), there is almost no damage or deterioration to the curtain 4. Therefore, the effect of preventing deterioration in appearance can be more reliably exerted over a long period of time.

[0041] Furthermore, the rail 2 is attached to a base material 52 (in this embodiment, a joist 52a) located behind the ceiling board 51. Therefore, the rail 2 is very difficult to see, which improves the appearance.

[0042] In addition, the rail 2 is disposed (recessed) in the opening 51a, with at least a portion of the rail 2 positioned above the underside of the ceiling board 51. This allows the curtain 4 to be brought closer to the opening 51a when the opening 51a is closed. Therefore, when the opening 51a is viewed from below, the opening 51a can be made more reliably invisible or difficult to see. As a result, it is possible to improve the appearance and more effectively prevent the lower interior (existing interior) from being soiled by dust and the like.

[0043] Furthermore, at least the portion of the curtain 4 located between the two widthwise edge portions is stretched (tensioned) along the width of the curtain 4. Therefore, when the opening 51a is closed, the curtain 4 is less likely to sag due to its own weight. As a result, a better appearance can be achieved. In addition, it is possible to install a good protective covering as a maintenance measure that should be carried out by contractors to prevent damage and soiling of constructed or installed items and to prevent hazards and accidents.

[0044] The present invention is not limited to the above-described embodiment, and may be implemented as follows: Of course, other applications and modifications not exemplified below are also possible.

[0045] (a) In the above embodiment, the rail 2 is configured to be attached to the joist 52a, but the object to which the rail 2 is attached is not limited to the joist 52a. Therefore, the rail 2 may be attached to a base material 52 other than the joist 52a (for example, a joist support 52b), or to the ceiling board 51. Of course, the rail 2 and its object to be attached may be attached directly, or a member such as the intervening member 5 may be interposed between the rail 2 and its object to be attached. Note that when attaching the rail 2 to an object to be attached, such as the ceiling board 51, a component capable of clamping the object to the rail 2 may be fixed to the rail 2 in advance, and the object to be attached may be clamped by the component, thereby attaching the rail 2 to the object to be attached.

[0046] (b) A stopper may be provided to restrict the movement of curtain 4 when opening 51a is closed or open. By providing the stopper, opening 51a can be more reliably maintained in the closed or open state.

[0047] Furthermore, a handle may be provided to move the curtain 4, making it easier to open and close the opening 51a. The handle may be configured to be attachable to and detachable from the curtain 4 or the like.

[0048] (c) In the above embodiment, the rail 2 is disposed in the opening 51a, but for example, when the rail 2 is attached to the joist support 52b, the rail 2 may be configured to be disposed above the opening 51a. In such a configuration, the entire rail 2 can be positioned above the underside of the ceiling board 51, and when the opening 51a is closed, the curtain 4 can be brought even closer to the opening 51a. This makes it possible to more reliably make the opening 51a invisible or difficult to see, further improving the appearance. [Explanation of symbols]

[0049] 1...ceiling opening protection device, 2...rail, 3...hanging member, 4...curtain, 50...ceiling portion, 51...ceiling board, 51a...opening, 52...underlayment material.

Claims

1. A ceiling opening protection device for temporarily closing an opening formed in a plate-shaped ceiling board that constitutes the ceiling of an existing building and temporarily restoring the ceiling when carrying out construction work using the opening. a pair of parallel rails disposed on either side of the opening in the ceiling; a suspension member attached to each of the pair of rails and movable along the extending direction of the pair of rails; a curtain whose both widthwise end edge portions are suspended by the suspension members, and which can be extended and folded by movement of the suspension members along the rails; The opening can be closed by extending the curtain, The rail is a base material located behind the existing ceiling board and from which the ceiling board is hung, and is attached to the base material that remains on the edge or side of the opening in the ceiling board after the part corresponding to the opening has been removed.

2. 2. The ceiling opening protection device according to claim 1, wherein the rail is disposed in the opening, and at least a portion of the rail is positioned above the lower surface of the ceiling board.

3. A ceiling opening protection device as described in claim 1 or 2, characterized in that at least the portion of the curtain located between the two widthwise end edge portions suspended by the hanging member is configured to be stretched along the width direction of the curtain.

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