Work space securing device

Abstract

To secure a work space for maintenance in the vicinity of a suspended object supported in a state of being suspended in a ceiling space.SOLUTION: A work space securing device 1 installed to secure a work space in the vicinity of a suspended object A supported in a state of being suspended in a ceiling space, comprises: a foldable sheet member 4; and a holding member 2 that holds the sheet member 4 and is set at the same height as the upper surface of the suspended object A or at a position higher than the upper surface of the suspended object A. The holding member 2 secures a work space by unfolding the folded sheet member 4 above the side surface of the suspended object A.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a work space securing device that is installed to secure a work space near a suspended object that is supported in a suspended state in a ceiling space. [Background technology]

[0002] Conventionally, as an air conditioner supported in a suspended state in a ceiling space, a concealed air conditioner that is installed in a concealed state in the ceiling space between the floor slab of the upper floor and the ceiling panel of the lower floor is known (for example, Patent Document 1). This type of air conditioner is supported in a suspended state in the ceiling space by a plurality of suspension bolts installed so as to hang down from the floor slab of the upper floor. Patent Document 1 discloses a structure in which the air conditioner is attached to a frame body, and the frame body is supported by a plurality of suspension bolts. However, this is not limited to this, and a support structure in which a plurality of suspension bolts hanging down from the floor slab of the upper floor directly support the air conditioner is also known.

[0003] FIG. 22 is a diagram illustrating an example of an air conditioner 100 in a suspended state. This air conditioner 100 has a configuration in which an air conditioner main body 110, an outlet chamber 120, and an intake chamber 130 are integrally assembled. Multiple suspension bolts 200 hanging down from the upper floor floor slab support this air conditioner 100 in a substantially horizontal position. In the example of FIG. 22, four suspension bolts 200 support both the left and right side surfaces of the air conditioner main body 110, two suspension bolts 200 support the end surface of the outlet chamber 120, and the remaining two suspension bolts support the end surface of the intake chamber 130. Bolt connection portions 114 for connecting the lower ends of bolt members such as the suspension bolts 200 are provided on the side surfaces of the air conditioner 100. The four suspension bolts 200 supporting the air conditioner main body 110 are connected to these bolt connection portions 114.

[0004] The air conditioner main body 110 is provided with a filter mounting section 102 for dust prevention and dust collection. One side 112 of the two side surfaces of the air conditioner main body 110 is provided with a plate-shaped door member 101 that can be opened and closed when replacing the filter mounted in the filter mounting section 102. A box section 103 that houses an electrical system and the like is also disposed on the same side surface 112 as the door member 101. Furthermore, the same side surface 112 is provided with connectors for connecting refrigerant piping and drain pipes. In this way, the air conditioner main body 110 is configured such that parts requiring maintenance work are concentrated on one side surface 112. Therefore, it is preferable that the air conditioner 100 be installed in the ceiling space with a working space secured near the side surface 112 of the air conditioner main body 110. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Publication No. 2019-207095 Summary of the Invention [Problem to be solved by the invention]

[0006] However, for example, when installing an air conditioner 100 in a newly constructed building, after installing the air conditioner 100 in the ceiling space, a process of installing other ceiling-suspended objects (e.g., a cable wiring rack, ducts, lighting fixtures, ceiling underlayment, ceiling panels, etc.) in the ceiling space may be performed. In this case, the contractor installing the air conditioner 100 has specialized knowledge about the air conditioner 100 and is therefore aware that a work space must be secured near the side surface 112 of the air conditioner main body 110. However, another contractor installing other ceiling-suspended objects does not have specialized knowledge about the air conditioner 100 and is unaware that a work space must be secured near the side surface 112 of the already-installed air conditioner main body 110. Therefore, as shown in FIG. 22 , there is a possibility that another contractor will install suspension bolts 200a, 200b supporting the other ceiling-suspended objects near the side surface 112 of the air conditioner main body 110.

[0007] If obstacles such as suspension bolts 200a, 200b are installed near side surface 112 of air conditioner body 110 as described above, it becomes impossible to perform maintenance work on air conditioner 100. Therefore, if an inspection after work by another contractor is completed reveals that there is not enough work space, work must be carried out to move obstacles such as suspension bolts 200a, 200b to another location, which significantly reduces work efficiency and causes problems such as delays in the construction period of the new building.

[0008] Furthermore, the above problem is not limited to the air conditioner 100. In addition to the air conditioner 100, various other suspended objects such as racks, ducts, and lighting fixtures are installed in the ceiling space while suspended by suspension bolts. It may become necessary to perform maintenance work on these other suspended objects. In such cases, if an obstacle such as another suspension bolt is installed near the suspended object, the maintenance work on the suspended object cannot be performed efficiently, which is a problem.

[0009] Therefore, the present invention has been made to solve the above-mentioned conventional problems, and aims to provide a work space securing device that can secure a work space for maintenance near a suspended object that is supported in a suspended state in the ceiling space. [Means for solving the problem]

[0010] In order to achieve the above object, first, the present invention provides a work space securing device that is installed on a suspended object or a support member that supports the suspended object in order to secure a work space near the suspended object that is supported in a suspended state in a ceiling space, the work space securing device comprising: a foldable sheet member; The base end is attached to the suspended object or the support member, Near the suspended object, at the same height as the upper surface of the suspended object, or at a position higher than the upper surface of the suspended object The sheet member is held by and a holding member, wherein the holding member secures the work space by unfolding the sheet member above the work space in the vicinity of the suspended object.

[0011] Secondly, the present invention provides a work space securing device that is installed on a suspended object or a support member that supports the suspended object in order to secure a work space near the suspended object that is supported in a suspended state in a ceiling space, the work space securing device comprising: a sheet member having a size corresponding to the area of ​​the work space to be secured near the suspended object; The base end is attached to the suspended object or the support member, The configuration is characterized by including a holding member that holds the sheet member in an unfolded state above the work space at the same height as the upper surface of the suspended object or at a higher height than the upper surface of the suspended object.

[0012] Thirdly, the present invention is a configuration in which, in a work space securing device having the above-mentioned first or second configuration, the suspended object is an air conditioner, and the holding member holds the sheet member in an unfolded state above the side of the air conditioner, thereby securing a work space near the side of the air conditioner.

[0013] Fourth, the present invention is a configuration in which, in a work space securing device having any of the configurations 1 to 3 above, the holding member comprises a pair of rod-shaped bodies arranged to protrude outward from the side of the suspended object in a parallel state at the same height as the upper surface of the suspended object or at a position higher than the upper surface of the suspended object, and both ends of the sheet member are supported by the pair of rod-shaped bodies.

[0014] Fifth, the present invention provides a work space securing device having the fourth configuration, which supports the suspended object in a suspended state. The aforementioned The configuration further includes a long base member attached to a support member and arranged parallel to the side of the suspended object, and one end of each of the pair of rod-shaped bodies is attached to the base member.

[0015] Sixth, the present invention is a configuration in which, in a work space securing device having the fifth configuration described above, the pair of rod-shaped bodies have one end attached to the base member that is rotatable relative to the base member.

[0016] Seventh, the present invention is characterized in that, in the work space securing device having the sixth configuration described above, it further comprises a biasing member that rotates the pair of rod-shaped bodies and displaces them into a state in which they protrude outward from the side of the suspended object.

[0017] Eighth, the present invention is a work space securing device having any of the configurations 1 to 3 above, wherein the holding member has a first rod-shaped body arranged to protrude outward from the side of the suspended object at the same height as the top surface of the suspended object or at a position higher than the top surface of the suspended object, and a second rod-shaped body attached to the tip of the first rod-shaped body and arranged in a state approximately parallel to the side of the suspended object, and the sheet member has one end attached to the second rod-shaped body and the other end attached to the top surface or an upper position of the suspended object.

[0018] Ninthly, the present invention provides a work space securing device having the eighth configuration, which supports the suspended object in a suspended state. The aforementioned The configuration further includes a long base member attached to a support member and arranged parallel to the side of the suspended object, wherein one end of the first rod-shaped body is attached to the base member and the other end of the sheet member is attached to the base member.

[0019] Tenth, the present invention is a work space securing device having the above-mentioned ninth configuration, characterized in that one end of the first rod-shaped body attached to the base member is rotatable relative to the base member, and one end of the second rod-shaped body attached to the first rod-shaped body is rotatable relative to the first rod-shaped body.

[0020] Eleventh, the present invention is a configuration in which, in a work space securing device having the configuration of the tenth aspect described above, it further comprises a first biasing member that rotates the first rod-shaped body relative to the base member, displacing the first rod-shaped body into a state in which it protrudes outward from the side of the suspended object, and a second biasing member that rotates the second rod-shaped body relative to the first rod-shaped body, displacing the second rod-shaped body into a state in which it is approximately parallel to the side of the suspended object. [Effects of the Invention]

[0021] According to the present invention, since the sheet member can cover the area above the suspended object, it is possible to prevent obstacles such as suspension bolts supporting ceiling-suspended objects other than the suspended object from being installed near the suspended object. Therefore, a maintenance work space can be secured near the suspended object that is supported in a suspended state in the ceiling space. [Brief explanation of the drawings]

[0022] [Figure 1] 1 is a diagram illustrating a configuration example of a work space securing device according to a first embodiment. [Figure 2] FIG. 1 is a diagram showing an example of an air conditioner in which a work space securing device is installed. [Figure 3] FIG. 10 is a diagram showing an example in which the work space securing device is installed in an air conditioner. [Figure 4] FIG. 10 is a diagram illustrating a configuration example of a work space securing device according to a second embodiment. [Figure 5] 10A and 10B are diagrams showing an example in which a sheet member is unfolded by rotating a pair of rod-shaped bodies. [Figure 6] FIG. 10 is a diagram showing an example in which a work space securing device is attached to an air conditioner. [Figure 7] 10 is a diagram showing a state in which the pair of rod-shaped bodies are rotated and the sheet member is unfolded. FIG. [Figure 8] FIG. 10 is a diagram illustrating a configuration example of a work space securing device according to a third embodiment. [Figure 9] 10A and 10B are diagrams illustrating the action of the position switching member and the stopper provided on the rod-shaped body. [Figure 10] FIG. 10 is a diagram illustrating a configuration example of a work space securing device according to a fourth embodiment. [Figure 11] 10A and 10B are diagrams illustrating an example in which the work space securing device unfolds a sheet member. [Figure 12] FIG. 13 is a diagram illustrating a configuration example of a work space securing device according to a fifth embodiment. [Figure 13] FIG. 13 is a diagram illustrating a configuration example of a work space securing device according to a fifth embodiment. [Figure 14] FIG. 13 is a diagram illustrating a configuration example of a work space securing device according to a fifth embodiment. [Figure 15] FIG. 13 is a diagram showing an example of an air conditioner in which a work space securing device according to a sixth embodiment is installed. [Figure 16] FIG. 10 is a diagram showing an example in which a work space securing device is attached to an air conditioner. [Figure 17] 10 is a diagram showing a state in which the work space securing device unfolds the sheet member. FIG. [Figure 18] FIG. 13 is a diagram illustrating an example of a support structure for an air conditioner according to a seventh embodiment. [Figure 19] FIG. 10 is a view showing a state in which the sheet member of the work space securing device is unfolded. [Figure 20] FIG. 10 is a diagram showing a rack for cable wiring that is installed as a hanging object in a ceiling space. [Figure 21] FIG. 10 is a view showing a state in which the sheet member of the work space securing device is unfolded. [Figure 22] FIG. 2 is a diagram illustrating an example of an air conditioner suspended in a ceiling space. DETAILED DESCRIPTION OF THE INVENTION

[0023] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings. In the drawings referred to below, common members are designated by the same reference numerals, and redundant descriptions thereof will be omitted.

[0024] (First embodiment) A first embodiment of the present invention will be described. In this embodiment and in several embodiments described below, an air conditioner 100 is exemplified as the suspended object A that is supported in a suspended state in the ceiling space. FIG. 1 is a diagram showing an example of the configuration of a work space securing device 1 in the first embodiment of the present invention. FIG. 2 is a diagram showing an example of an air conditioner 100 in which the work space securing device 1 is installed. FIG. 3 is a diagram showing an example in which the work space securing device 1 is installed in the air conditioner 100. This work space securing device 1 is a device that is installed in the vicinity of the side surface 112 of the air conditioner 100 that is supported in a suspended state in the ceiling space in order to secure a work space for maintenance.

[0025] As shown in Figure 1, the work space securing device 1 includes a sheet member 4 and a holding member 2 that holds the sheet member 4. The sheet member 4 is a flexible sheet member made of, for example, fabric or a resin sheet, and is made of a non-flammable material. The holding member 2 includes a pair of rod-shaped members 2a and 2b. The rod-shaped members 2a and 2b are made of, for example, angle bars with an L-shaped cross section.

[0026] Cylindrical portions 4a, 4b are formed on both ends of the sheet member 4. The pair of rod-shaped bodies 2a, 2b have their tips inserted into the cylindrical portions 4a, 4b formed on both ends of the sheet member 4 to hold the sheet member 4. The length of the pair of rod-shaped bodies 2a, 2b is longer than the cylindrical portions 4a, 4b of the sheet member 4. Therefore, when the tips are inserted into the cylindrical portions 4a, 4b, the base ends of the pair of rod-shaped bodies 2a, 2b extend and are exposed from the ends of the cylindrical portions 4a, 4b. The pair of rod-shaped bodies 2a, 2b have magnets 3 attached to their base ends.

[0027] The air conditioner 100, which is installed as a hanging object A in the ceiling space, is installed in a concealed state in the ceiling space between the upper floor floor slab and the lower floor ceiling panel 310, as shown in FIG. 2, for example. This air conditioner 100 has a configuration in which an outlet chamber 120 and an intake chamber 130 are integrally assembled to an air conditioner main body 110, and is supported in a substantially horizontal position by a plurality of hanging bolts 200 hanging down from the upper floor floor slab. The air conditioner main body 110 is a box-shaped unit that is rectangular in plan view. The outlet chamber 120 is also a box-shaped unit that is rectangular in plan view, and is arranged in a state connected to the front side (front side) of the air conditioner main body 110, and is equipped with at least one outlet 125. A flexible duct or the like that guides conditioned air into the room is connected to this outlet 125. The intake chamber 130 is also a box-shaped unit that is rectangular in plan view, and is arranged in a state connected to the back side (rear side) of the air conditioner main body 110. In addition, a duct for taking in outside air may also be connected to the intake chamber 130.

[0028] In the example of Figure 2, a total of eight hanging bolts 200 support the air conditioner 100, with four hanging bolts 200 supporting the left and right sides of the air conditioner main body 110, another two hanging bolts 200 supporting the end face of the outlet chamber 120, and the remaining two hanging bolts supporting the end face of the intake chamber 130.

[0029] Two side surfaces 112, 113 of the air conditioner body 110 are provided with bolt connection portions 114 for connecting the lower ends of bolt members such as suspension bolts 200. Vibration-isolating members 115 are attached to the bolt connection portions 114. The vibration-isolating members 115 are members that reduce the transmission of vibrations generated during operation of the air conditioner 100 to the suspension bolts 200. For example, the vibration-isolating member 115 is composed of a roughly U-shaped metal fitting 116 and a coil spring 117 attached to one end of the metal fitting 116. The vibration-isolating member 115 is attached with the lower ends of the suspension bolts 200 inserted into the coil spring 117 at one end, and the other end is fixed to the bolt connection portions 114 with a bolt and a nut. In other words, the four suspension bolts 200 that support the air conditioner body 110 support the two side surfaces 112, 113 of the air conditioner body 110 via the vibration-isolating members 115.

[0030] A bolt connection portion 121 is provided on the end face of the blowout chamber 120. A vibration-isolating member 122 is attached to the bolt connection portion 121. The vibration-isolating member 122 is a member that reduces the transmission of vibrations generated during operation of the air conditioner 100 to the suspension bolt 200. For example, the vibration-isolating member 122 has a cylindrical or truncated conical shape made of an elastic member such as rubber, and has a hole formed in the center through which the suspension bolt 200 is inserted. This vibration-isolating member 122 is attached to the underside of the bolt connection portion 121, for example. The lower end of the suspension bolt 200 is inserted through the bolt connection portion 121 and the vibration-isolating member 122, and a nut is attached to the tip that protrudes from the underside of the vibration-isolating member 122. Therefore, the two suspension bolts 200 that support the blowout chamber 120 support the end faces of the blowout chamber 120 via the vibration-isolating member 122.

[0031] A bolt connection portion 131 is provided on the end face of the intake chamber 130. A vibration-isolating member 122 similar to that described above is also attached to the bolt connection portion 131. Therefore, the two suspension bolts 200 supporting the intake chamber 130 support the end face of the intake chamber 130 via the vibration-isolating member 122.

[0032] A filter mounting section 102 for dust prevention and dust collection is provided inside the air conditioner main body 110. Of the two side surfaces 112, 113 of the air conditioner main body 110, one side surface 112 is provided with a plate-shaped door member 101 that can be opened and closed when replacing the filter mounted in the filter mounting section 102. A box section 103 accommodating an electrical system and the like is also disposed on the same side surface 112 as the door member 101. Furthermore, the same side surface 112 is provided with a connector 104 for connecting a refrigerant pipe and a connector 105 for connecting a drain pipe. In other words, the air conditioner main body 110 has a configuration in which components requiring maintenance are concentrated on one side surface 112. Therefore, when the air conditioner 100 is installed in a ceiling space, it is preferable to install it with a maintenance work space secured near the side surface 112 of the air conditioner main body 110.

[0033] Meanwhile, a ceiling panel 310 installed below the air conditioner 100 has an openable / closable opening 311 formed below the work space relative to the side surface 112 of the air conditioner main body 110. This opening 311 is closed by another panel member when maintenance work is not being performed. Therefore, when maintenance work such as filter replacement work on the air conditioner main body 110 or inspection work on the electrical system, refrigerant piping, and drain piping is performed, the opening 311 provided in the ceiling panel 310 is opened to allow the worker to access the side surface 112 of the air conditioner main body 110. For example, after the air conditioner 100 is installed in the ceiling space using a plurality of suspension bolts 200, a ceiling base material is installed in a state in which it is suspended below the air conditioner 100 using other suspension bolts, and the ceiling panel 310 is attached to the ceiling base material. However, the installation manner of the ceiling panel 310 is not necessarily limited to this.

[0034] As shown in FIG. 3 , the workspace securing device 1 is attached to the upper surface 111 of the air conditioner 100 when the air conditioner 100 is installed in the ceiling space using a plurality of suspension bolts 200. This workspace securing device 1 is attached to the upper surface side of the air conditioner 100 while it is suspended in the ceiling space. The sheet member 4 of the workspace securing device 1 is flexible and therefore foldable. Therefore, by folding the sheet member 4 and bringing the pair of rod-shaped bodies 2a, 2b close to each other, the workspace securing device 1 becomes small enough to be carried with one hand. Therefore, after the air conditioner 100 is installed in the ceiling space, the workspace securing device 1 can be carried into the upper surface side of the air conditioner 100 with the sheet member 4 folded, which has the advantage of being easy to handle.

[0035] For example, the upper surface 111 of the air conditioner main body 110 in this embodiment is formed of a thin iron plate. Therefore, the workspace securing device 1 is installed by attaching the magnets 3 provided at the base ends of the pair of rod-shaped bodies 2a, 2b to the upper surface 111 of the air conditioner main body 110. At this time, the workspace securing device 1 is attached in a state in which the tips of the pair of rod-shaped bodies 2a, 2b protrude outward from the side surface 112 of the air conditioner main body 110. In addition, the worker widens the gap between the pair of rod-shaped bodies 2a, 2b to unfold the sheet member 4 above the side surface 112 of the air conditioner main body 110, as shown in FIG. 3, and attaches the sheet member 4 in a state in which the sheet member 4 covers the upper part of the side surface 112. The sheet member 4 has a size (area) corresponding to the area of ​​the workspace to be secured near the side surface 112 of the air conditioner main body 110, and is unfolded above the side surface 112 of the air conditioner main body 110 with both ends supported by the pair of rod-shaped bodies 2a, 2b. By unfolding the sheet member 4 at the same height as the upper surface 111 of the air conditioner body 110, the work space securing device 1 allows the sheet member 4 to cover the area above and in the vicinity of the side surface 112 of the air conditioner body 110, thereby preventing obstacles such as other hanging bolts from being installed in the work space near the side surface 112 of the air conditioner body 110. It is more preferable that such a sheet member 4 be positioned so as to cover the area above an opening 311 provided in the ceiling panel 310, for example.

[0036] In this way, the work space securing device 1 of this embodiment can prevent another contractor from installing obstacles such as hanging bolts near the side surface 112 of the air conditioner body 110 after the air conditioner 100 has been installed in the ceiling space. This makes it possible to prevent the occurrence of unnecessary work such as moving obstacles to another location after another contractor has finished their work, and can significantly improve work efficiency.

[0037] As described above, the workspace securing device 1 of the present embodiment is a device installed to secure a workspace near the side surface 112 of the air conditioner 100 that is supported in a suspended state in the ceiling space, and includes a foldable sheet member 4 and a holding member 2 that holds the sheet member 4 and is set at the same height as the upper surface 111 of the air conditioner 100. The holding member 2 is configured to secure a workspace by unfolding the folded sheet member 4 above the side surface 112 of the air conditioner 100. This configuration makes it possible to prevent another contractor or the like from installing another obstacle, such as a hanging bolt, near the side surface 112 of the air conditioner 100 after the air conditioner 100 has been installed in the ceiling space, and makes it possible to secure a workspace for maintenance near the side surface 112 of the air conditioner 100. In other words, such a work space securing device 1 functions as an obstacle prevention device that prevents obstacles such as the hanging bolts 200a, 200b shown in Figure 22 from being installed near the side surface 112 of the air conditioner 100.

[0038] At a construction site for a new building, for example, after all installation processes for the air conditioner 100 and other ceiling-suspended objects in the ceiling space have been completed, the above-mentioned work space securing device 1 may be removed from the upper surface 111 of the air conditioner 100. At this time, the work space securing device 1 can be easily removed from the air conditioner 100 by removing the magnet 3 from the upper surface 111 of the air conditioner 100, resulting in excellent work efficiency.

[0039] The work space securing device 1 may also be left attached to the upper surface 111 of the air conditioner 100. In this case, since the sheet member 4 is made of a non-flammable material, the sheet member 4 can be prevented from causing a fire or spreading of fire even if it is left in the ceiling space.

[0040] (Second embodiment) Next, a second embodiment of the present invention will be described. In the first embodiment described above, a configuration was exemplified in which a pair of rod-shaped bodies 2a, 2b holding a sheet member 4 were attached to the upper surface 111 of the air conditioner 100 by magnets 3. However, if the upper surface of the air conditioner 100 is covered with a heat insulating material or the like, the pair of rod-shaped bodies 2a, 2b cannot be attached to the upper surface 111 of the air conditioner 100 by magnets 3. Furthermore, in a configuration in which the pair of rod-shaped bodies 2a, 2b are attached to the upper surface 111 of the air conditioner 100 by magnets 3, there is a possibility that another contractor may move the position of the pair of rod-shaped bodies 2a, 2b and install an obstacle such as another hanging bolt near the side surface 112 of the air conditioner 100. Therefore, in this embodiment, a workspace securing device 1 that can solve such problems will be described.

[0041] 4 is a diagram showing an example of the configuration of a work space securing device 1 in a second embodiment of the present invention. This work space securing device 1 includes a base member 5, a holding member 2, and a sheet member 4.

[0042] The base member 5 is a long metal fitting, for example, made of an L-shaped angle bar, and includes a flat plate portion 5a and a vertical plate portion 5b. The flat plate portion 5a and the vertical plate portion 5b are connected at right angles to each other, with the flat plate portion 5a positioned substantially parallel to a horizontal plane and the vertical plate portion 5b positioned substantially parallel to the vertical direction. The base member 5 includes connecting fittings 6 at both ends of the vertical plate portion 5b that can be attached to support members, such as hanging bolts 200, that support the air conditioner 100 in a suspended state. For example, the connecting fittings 6 have U-shaped notches that engage with the outer circumferential surfaces of support members, such as the hanging bolts 200. The outer circumferential surfaces of the support members are joined to the inside of the notches, and bolts 7 are tightened to sandwich and secure the support members between the connecting fittings 6 and the vertical plate portion 5b. For example, the bolts 7 pass through holes formed in the vertical plate portion 5b and are attached to the vertical plate portion 5b with a nut attached to the tip of a male thread protruding from the back side of the vertical plate portion 5b.

[0043] As in the first embodiment, the holding member 2 includes a pair of rod-shaped bodies 2a and 2b. One end of each of the pair of rod-shaped bodies 2a and 2b is rotatably attached to the flat plate portion 5a of the base member 5. For example, the rod-shaped body 2a is attached to one end of the base member 5 by a bolt 8a. A cylindrical spacer (not shown) is disposed on the underside of the rod-shaped body 2a, and the spacer holds the rod-shaped body 2a at a predetermined height above the flat plate portion 5a of the base member 5. When the bolt 8a is loosely fastened, the rod-shaped body 2a can rotate around the shaft of the bolt 8a. The rod-shaped body 2b is attached to the other end of the base member 5 by a bolt 8b. For example, no spacer like the rod-shaped body 2a is provided on the underside of the rod-shaped body 2b. Therefore, the rod-shaped bodies 2a and 2b are attached to the base member 5 at different heights. When the bolt 8b is loosely fastened, the rod-shaped body 2b is rotatable around the shaft of the bolt 8b.

[0044] Here, the interval between the bolts 8a, 8b attached to the base member 5 is preferably longer than the length of the pair of rod-shaped bodies 2a, 2b. By making the interval between the bolts 8a, 8b longer than the pair of rod-shaped bodies 2a, 2b, the pair of rod-shaped bodies 2a, 2b, which are held at different heights, can be stored in a substantially parallel state on the upper surface side of the flat plate portion 5a. This makes it possible to carry the workspace securing device 1 with the pair of rod-shaped bodies 2a, 2b stored in a parallel state.

[0045] As in the first embodiment, the sheet member 4 is a flexible sheet member made of, for example, a fabric or a resin sheet, and is formed of a non-flammable material. As in the first embodiment, cylindrical portions are formed at both ends of the sheet member 4. The tips of the pair of rod-shaped bodies 2a and 2b are inserted into the cylindrical portions formed at both ends of the sheet member 4 to hold both ends of the sheet member 4. The example shown in FIG. 4 illustrates the sheet member 4 held by the pair of rod-shaped bodies 2a and 2b in a folded state (more specifically, a rolled-up state). As described above, the pair of rod-shaped bodies 2a and 2b are held at different heights. Therefore, the folded sheet member 4 can be accommodated in the space between the pair of rod-shaped bodies 2a and 2b, which are parallel to each other, as shown in FIG. 4. If the bolts 8a and 8b are tightly tightened in this state, the rod-shaped bodies 2a and 2b will not rotate, preventing the sheet member 4 from unfolding when the workspace securing device 1 is carried.

[0046] In the work space securing device 1 configured as described above, the pair of rod-shaped bodies 2a, 2b can be rotated by loosening the bolts 8a, 8b, and the sheet member 4 can be deployed to the side of the base member 5 by rotating the pair of rod-shaped bodies 2a, 2b. FIG. 5 is a diagram showing an example of deploying the sheet member 4 by rotating the pair of rod-shaped bodies 2a, 2b. For example, as shown in FIG. 5(a), a portion of the sheet member 4 is deployed by rotating the rod-shaped body 2a by approximately 90 degrees around the shank of the bolt 8a. Thereafter, as shown in FIG. 5(b), the entire sheet member 4 can be deployed to the side of the base member 5 by rotating the rod-shaped body 2b by approximately 90 degrees around the shank of the bolt 8b.

[0047] FIG. 6 is a diagram showing an example in which the work space securing device 1 is attached to an air conditioner 100. For example, as shown in FIG. 6, the work space securing device 1 is attached to the air conditioner 100 by fastening connecting fittings 6 provided on the base member 5 to hanging bolts 200 that support the air conditioner 100. The connecting fittings 6 are attached to, for example, two hanging bolts 200 that support the side surface 112 of the air conditioner main body 110, and support the base member 5 in a substantially horizontal position between the two hanging bolts 200, 200. In this case, the base member 5 is attached at the same height as the upper surface 111 of the air conditioner main body 110, or at a higher position than the upper surface 111 of the air conditioner main body 110. Note that FIG. 6 shows an example in which the flat plate portion 5a of the base member 5 is attached so as to face the inside of the air conditioner 100, but this is not limiting, and the base member 5 may be attached so that the flat plate portion 5a faces the outside of the air conditioner 100. Furthermore, when attaching the base member 5 to the hanging bolts 200, 200, by tightening the bolts 8a, 8b, the pair of rod-shaped bodies 2a, 2b can be prevented from rotating relative to the base member 5, and the base member 5 can be attached to the hanging bolts 200, 200 smoothly.

[0048] As shown in FIG. 6, when the base member 5 is attached to two hanging bolts 200, 200, the pair of rod-shaped bodies 2a, 2b can be rotated by loosening the bolts 8a, 8b, and the sheet member 4 can be unfolded. FIG. 7 is a diagram showing the state in which the pair of rod-shaped bodies 2a, 2b are rotated and the sheet member 4 is unfolded. As shown in FIG. 7, when the pair of rod-shaped bodies 2a, 2b are rotated approximately 90 degrees, the pair of rod-shaped bodies 2a, 2b protrude outward above the side surface 112 of the air conditioner main body 110. The pair of rod-shaped bodies 2a, 2b then unfold the sheet member 4 above the side surface 112 of the air conditioner main body 110. As a result, the sheet member 4 can cover the upper area near the side surface 112 of the air conditioner main body 110 with both ends supported by the pair of rod-shaped bodies 2a, 2b. In this way, by covering the upper part near the side surface 112 of the air conditioner body 110 with the sheet member 4, it is possible to prevent obstacles such as other hanging bolts from being installed in the work space for the side surface 112 of the air conditioner body 110. Then, as shown in Fig. 7, after the sheet member 4 is unfolded, by tightening the bolts 8a, 8b, the pair of rod-shaped bodies 2a, 2b are fixed in a state where they protrude outward above the side surface 112. This makes it possible to prevent another worker from rotating the pair of rod-shaped bodies 2a, 2b.

[0049] Therefore, similar to the first embodiment, the workspace securing device 1 of this embodiment can prevent another contractor from installing obstacles such as suspension bolts near the side surface 112 of the air conditioner body 110 after the air conditioner 100 has been installed in the ceiling space, thereby reducing the need for unnecessary work such as moving the obstacle to another location after the other contractor has finished their work, thereby significantly improving work efficiency. In particular, the workspace securing device 1 of this embodiment has a pair of rod-shaped bodies 2a, 2b attached to the base member 5, and the base member 5 can be fixed in a predetermined position above the side surface 112 of the air conditioner 100 by attaching it to suspension bolts 200, 200, etc. Therefore, even if the top surface 111 of the air conditioner 100 is covered with a heat insulating material, etc., the workspace securing device 1 can be installed in a predetermined position on the air conditioner 100. In addition, the work space securing device 1 of this embodiment has the advantage that the base member 5 supporting the pair of rod-shaped bodies 2a, 2b is fixed at a position above the air conditioner 100, which prevents the pair of rod-shaped bodies 2a, 2b from being moved by another contractor.

[0050] Furthermore, the workspace securing device 1 of this embodiment allows the sheet member 4 to be easily removed from the pair of rod-shaped bodies 2a, 2b. That is, in the state shown in FIG. 7 , by pulling the sheet member 4 in the extension direction of the pair of rod-shaped bodies 2a, 2b, the cylindrical portions provided at both ends of the sheet member 4 come out of the pair of rod-shaped bodies 2a, 2b, and the sheet member 4 can be easily removed from the pair of rod-shaped bodies 2a, 2b. Therefore, for example, if it is necessary to remove the sheet member 4 covering the upper portion near the side surface 112 of the air conditioner main body 110 after all installation processes for the air conditioner 100 and other ceiling-suspended objects in the ceiling space are completed, the sheet member 4 can be easily removed by pulling it out of the pair of rod-shaped bodies 2a, 2b. After removing the sheet member 4, loosen the bolts 8a, 8b and rotate the pair of rod-shaped bodies 2a, 2b to store them parallel to the base member 5, thereby preventing the pair of rod-shaped bodies 2a, 2b from getting in the way of subsequent maintenance work.

[0051] However, the sheet member 4 does not necessarily have to be removed from the work space securing device 1. In this case, the work space securing device 1 may be left in the ceiling space with the sheet member 4 in an unfolded state, or the sheet member 4 may be folded and left in the ceiling space with the pair of rod-shaped bodies 2a, 2b stored in a state parallel to the base member 5. In this case, too, since the sheet member 4 is made of a non-flammable material, the sheet member 4 can be prevented from causing a fire or spreading of fire even if it is left in the ceiling space.

[0052] In addition, other than the points described above, this embodiment is the same as that described in the first embodiment.

[0053] (Third embodiment) Next, a third embodiment of the present invention will be described. In the second embodiment, the bolts 8a and 8b had to be tightened to restrict the rotation of the pair of rod-shaped bodies 2a and 2b, and loosened to allow the rotation of the pair of rod-shaped bodies 2a and 2b. Therefore, a worker must manually tighten and loosen the bolts 8a and 8b attached to one end of the pair of rod-shaped bodies 2a and 2b. For example, when the pair of rod-shaped bodies 2a and 2b protrude outward from the side surface 112 of the air conditioner body 110 and the sheet member 4 is deployed, the pair of rod-shaped bodies 2a and 2b and the sheet member 4 get in the way, making it difficult to tighten the bolts 8a and 8b, potentially reducing work efficiency. Therefore, in this embodiment, a workspace securing device 1 will be described that does not require the tightening of the bolts 8a and 8b.

[0054] Fig. 8 is a diagram showing an example of the configuration of a work space securing device 1 in a third embodiment of the present invention. As shown in Fig. 8(a), the work space securing device 1, like the second embodiment, comprises a base member 5, a holding member 2, and a sheet member 4. The holding member 2 is a member that holds both ends of the sheet member 4, and like the second embodiment, comprises a pair of rod-shaped members 2a, 2b. For example, like the second embodiment, this work space securing device 1 is attached to the air conditioner 100 in the manner shown in Fig. 6.

[0055] One end of the pair of rod-shaped bodies 2a, 2b is rotatably attached to the flat plate portion 5a of the base member 5. For example, rod-shaped body 2a is attached to one end of the base member 5 by a bolt 8a and is rotatable about the shaft portion of the bolt 8a. Rod-shaped body 2b is attached to the other end of the base member 5 by a bolt 8b and is rotatable about the shaft portion of the bolt 8b. Note that, like the second embodiment, a cylindrical spacer (not shown) is arranged on the underside of rod-shaped body 2a, and the spacer keeps rod-shaped body 2a suspended at a predetermined height above the flat plate portion 5a of the base member 5, whereas rod-shaped body 2b is not provided with a spacer like rod-shaped body 2a.

[0056] The work space securing device 1 also includes a position switching member 10 that rotates each of the pair of rod-shaped bodies 2a, 2b in a predetermined direction around the shafts of the bolts 8a, 8b to change the position of each of the pair of rod-shaped bodies 2a, 2b relative to the base member 5. This position switching member 10 is provided individually for each of the pair of rod-shaped bodies 2a, 2b.

[0057] The posture switching member 10 includes a biasing member 11 that rotates each of the pair of rod-shaped bodies 2a, 2b in a predetermined direction to a state in which they protrude outward from the side surface 112 of the air conditioner 100, and a stopper 13 that stops the rotation of the pair of rod-shaped bodies 2a, 2b at a position rotated approximately 90 degrees from a state in which the pair of rod-shaped bodies 2a, 2b are parallel to the base member 5. The biasing member 11 provided at one end of the rod-shaped body 2a biases the rod-shaped body 2a in the rotation direction R1. The biasing member 11 provided at one end of the rod-shaped body 2b biases the rod-shaped body 2b in the rotation direction R2.

[0058] FIG. 8(b) shows an enlarged view of one end of the rod-shaped body 2b. The biasing member 11 is formed, for example, by a coil spring 12. When the coil spring 12 is extended, both ends of the coil spring 12 are connected to the rod-shaped body 2b and the base member 5, respectively. For example, one end of the coil spring 12 is connected to the rod-shaped body 2b, and the other end is connected to the flat plate portion 5a of the base member 5. The coil spring 12 is attached to the rear side of the rod-shaped body 2b so as to straddle the position where the bolt 8b is horizontally provided. In other words, one end of the coil spring 12 is attached to a position closer to the end of the rod-shaped body 2b than the position of the bolt 8b. Therefore, in the state shown in FIG. 8(b), the extended coil spring 12 biases the rod-shaped body 2b in the rotational direction R2.

[0059] The stopper 13 is formed of, for example, a wire 14. One end of the wire 14 is connected to the base member 5, and the other end is connected to the rod-shaped body 2b. The wire 14 is in a bent state when the rod-shaped body 2b is stored in a state parallel to the base member 5. When the rod-shaped body 2b rotates approximately 90 degrees in the rotation direction R2, the wire 14 applies tension between the base member 5 and the rod-shaped body 2b, restricting further rotation of the rod-shaped body 2b. The position switching member 10 provided on the rod-shaped body 2a has a similar configuration.

[0060] FIG. 9 is a diagram illustrating the action of the position-changing member 10 and the stopper 13 on the rod-shaped body 2a. As shown in FIG. 9(a), when the rod-shaped body 2a is parallel to the base member 5, the wire 14 provided as the stopper 13 is bent. At this time, the coil spring 12 serving as the biasing member 11 is in an extended state and applies a biasing force in the contracting direction. This biasing force biases the rod-shaped body 2a in the rotational direction R1. This biasing force causes the rod-shaped body 2a to rotate in the rotational direction R1 around the shaft of the bolt 8a. As the rod-shaped body 2a rotates in the rotational direction R1, the wire 14 is displaced from its bent state. When the rod-shaped body 2a rotates approximately 90 degrees in the rotational direction R1, the wire 14 extends linearly between the rod-shaped body 2a and the base member 5 as shown in FIG. 9(b), exerting tension between the base member 5 and the rod-shaped body 2a. This tension stops the rotation of the rod-shaped body 2a, and the rod-shaped body 2a is held in a position rotated approximately 90 degrees from the base member 5.

[0061] The stopper 13 is not necessarily limited to the wire 14. For example, the stopper 13 may be a protrusion provided on the base member 5 that comes into contact with the pair of rod-shaped bodies 2a and 2b to stop the rotation of the pair of rod-shaped bodies 2a and 2b when the pair of rod-shaped bodies 2a and 2b rotates approximately 90 degrees.

[0062] As described above, in the work space securing device 1 of this embodiment, the pair of rod-shaped bodies 2a, 2b are urged in the rotational directions R1, R2 by the urging members 11, respectively, and the urging forces allow the rod-shaped bodies 2a, 2b to rotate approximately 90 degrees from a stored state parallel to the base member 5. As shown in FIG. 8(a), the work space securing device 1 is provided with a restricting member 15 located approximately in the center of the base member 5, which restricts the positional change of the pair of rod-shaped bodies 2a, 2b. For example, the restricting member 15 is a member in which a plate-shaped restricting metal fitting 16 is attached to the vertical plate portion 5b of the base member 5 with a bolt 17. The restricting metal fitting 16 rotates in the rotational direction R3 around the shaft portion of the bolt 17. Therefore, the position of the restricting metal fitting 16 changes between a first position in which it protrudes from the upper surface of the base member 5 and a second position in which it is parallel to the vertical plate portion 5b of the base member 5. By keeping this regulation fitting 16 in the first position, the pair of rod-shaped bodies 2a, 2b interfere with the regulation fitting 16 and do not rotate in the rotation directions R1, R2, but maintain a stored state parallel to the base member 5.

[0063] Therefore, as shown in Fig. 6, when attaching the work space securing device 1 to a support member such as a hanging bolt 200, by keeping the regulating metal fitting 16 in the first position, it is possible to attach the work space securing device 1 in a state in which the pair of rod-shaped bodies 2a, 2b are housed on the upper surface of the flat plate portion 5a of the base member 5. In other words, the work space securing device 1 can be attached to the air conditioner 100 without the pair of rod-shaped bodies 2a, 2b or the sheet member 4 getting in the way, resulting in excellent work efficiency.

[0064] Then, as shown in Fig. 6, after the workspace securing device 1 is attached to a support member such as a hanging bolt 200, when the restricting metal fitting 16 is rotated in the rotation direction R3 to assume the second position, the pair of rod-shaped bodies 2a, 2b rotate due to the biasing force of the biasing member 11. As a result, the pair of rod-shaped bodies 2a, 2b project outward above the side surface 112 of the air conditioner main body 110, as shown in Fig. 7, causing the sheet member 4 to unfold above the side surface 112 of the air conditioner main body 110. At this time, the stopper 13 stops the rotation of the pair of rod-shaped bodies 2a, 2b at a position where the pair of rod-shaped bodies 2a, 2b have rotated approximately 90 degrees relative to the base member 5. Therefore, the pair of rod-shaped bodies 2a, 2b are held in a position where they project most outward above the side surface 112 of the air conditioner main body 110. As a result, with both ends of the sheet member 4 supported by the pair of rod-shaped bodies 2a, 2b, it is possible to cover the upper part of the vicinity of the side surface 112 of the air conditioner body 110. Furthermore, by having the sheet member 4 cover the upper part of the vicinity of the side surface 112 of the air conditioner body 110, it is possible to prevent obstacles such as other hanging bolts from being installed in the work space for the side surface 112 of the air conditioner body 110.

[0065] In such a work space securing device 1, the biasing force of the biasing member 11 is constantly acting on the pair of rod-shaped bodies 2a, 2b. Therefore, even if a force in the direction opposite to the rotational directions R1, R2 acts on the rod-shaped bodies 2a, 2b in the unfolded state of the sheet member 4 as shown in Fig. 7 and the rod-shaped bodies 2a, 2b are displaced, the rod-shaped bodies 2a, 2b are quickly returned to their original positions by the biasing force of the biasing member 11. Therefore, as described in the second embodiment, it is not necessary to perform the operation of tightening the bolts 8a, 8b after unfolding the sheet member 4 above and in the vicinity of the side surface 112 of the air conditioner 100, thereby improving work efficiency.

[0066] Furthermore, in the workspace securing device 1 of this embodiment, as in the second embodiment, the sheet member 4 can be easily removed from the pair of rod-shaped bodies 2a, 2b. Therefore, for example, after completing the installation process for the air conditioner 100 and other ceiling-suspended objects in the ceiling space, if it becomes necessary to remove the sheet member 4 covering the upper portion near the side surface 112 of the air conditioner main body 110, the sheet member 4 can be easily removed by pulling it off the pair of rod-shaped bodies 2a, 2b. After removing the sheet member 4, the pair of rod-shaped bodies 2a, 2b can be stored parallel to the base member 5 against the biasing force of the biasing member 11, and the restraining member 15 can maintain this stored state. By storing the pair of rod-shaped bodies 2a, 2b parallel to the base member 5, the pair of rod-shaped bodies 2a, 2b can be prevented from getting in the way of subsequent maintenance work. However, the sheet member 4 does not necessarily have to be removed from the workspace securing device 1.

[0067] In addition, other than the points described above, this embodiment is the same as those described in the first and second embodiments.

[0068] (Fourth embodiment) Next, a fourth embodiment of the present invention will be described. Fig. 10 is a diagram showing an example of the configuration of a work space securing device 1 in the fourth embodiment of the present invention. Fig. 11 is a diagram showing an example of the work space securing device 1 unfolding a sheet member 4. This work space securing device 1 comprises a base member 5, a sheet member 4, and a holding member 2.

[0069] The holding member 2 is a member that holds both ends of the sheet member 4. The holding member 2 of this embodiment is composed of two rod-shaped bodies 2a and 2c. One of the rod-shaped bodies 2a is made up of, for example, an angle bar with an L-shaped cross section, and one end of the rod-shaped body 2a is rotatably attached to the flat plate portion 5a of the base member 5 by a bolt 8a, as in the second or third embodiment. The other rod-shaped body 2c is made up of, for example, a cylindrical pipe member, and is not fixed to the base member 5.

[0070] The base member 5 is similar to that described in the second or third embodiment. This base member 5 has a cylindrical support rod 18 at a position a predetermined distance from the position of the bolt 8a in its longitudinal direction. The support rod 18 is attached at its base end to the vertical plate portion 5b of the base member 5 and at its tip end protruding from the vertical plate portion 5b. For example, the support rod 18 is attached at a position spaced a distance equal to the length of the sheet member 4 from the position of the bolt 8a. The support rod 18 has an outer diameter that allows it to be inserted inside the rod-shaped body 2c.

[0071] The sheet member 4 has both ends attached to the two rod-shaped bodies 2a and 2c. For example, the sheet member 4 can be wrapped around the rod-shaped body 2c. In addition to being wrapped around the rod-shaped body 2c, the sheet member 4 may also be folded into a roll or accordion-like shape.

[0072] The work space securing device 1 having the above-described configuration secures a work space near the side surface 112 of the air conditioner 100 by unfolding the sheet member 4 after the base member 5 is attached to a support member such as a hanging bolt 200 that supports the air conditioner 100 in a suspended state.

[0073] FIG. 11 is a diagram showing an example of unfolding the sheet member 4. First, after the base member 5 is attached to the support member, as shown in FIG. 11(a), the rod-shaped body 2a is rotated around the shaft of the bolt 8a. At this time, it is preferable that the worker rotate the rod-shaped body 2a while holding the two rod-shaped bodies 2a and 2c. After rotating the rod-shaped body 2a approximately 90 degrees relative to the base member 5, the worker then unfolds the sheet member 4 wrapped around the rod-shaped body 2c as shown in FIG. 11(b). Note that the same applies when the sheet member 4 is folded. When the sheet member 4 is unfolded, the rod-shaped body 2c reaches approximately the same position as the support rod 18 as shown in FIG. 11(b). Then, as shown in FIG. 11(c), the worker attaches the rod-shaped body 2c to the base member 5 by fitting it into the support rod 18. As a result, the sheet member 4 is supported at both ends by the two rod-shaped bodies 2a and 2c, and is held in a state in which it is spread out to the side of the base member 5.

[0074] In the workspace securing device 1 having the above configuration, as in the second and third embodiments, the base member 5 is attached to a support member such as a suspension bolt 200 that supports the air conditioner 100 in a suspended state. Therefore, as shown in FIG. 11(c), as the sheet member 4 is unfolded to the side of the base member 5, the sheet member 4 can cover the upper area near the side surface 112 of the air conditioner main body 110 with both ends supported by the two rod-shaped bodies 2a, 2c. Furthermore, by the sheet member 4 covering the upper area near the side surface 112 of the air conditioner main body 110, it is possible to prevent an obstacle such as another suspension bolt from being installed in the workspace relative to the side surface 112 of the air conditioner main body 110.

[0075] Furthermore, the work space securing device 1 of this embodiment can adjust the width W of the work space covered by the sheet member 4 by adjusting the position of the support rods 18 and the length of the sheet member 4. For example, by moving the support rods 18 closer to the rod-shaped bodies 2a, the width W of the work space can be made smaller than the length of the rod-shaped bodies 2a. Therefore, when it is necessary to secure a work space with a narrow width W, the work space securing device 1 of this embodiment has the advantage of being easier to use than the work space securing devices 1 of the second and third embodiments.

[0076] Furthermore, in the workspace securing device 1 of this embodiment, as in the second and third embodiments, the sheet member 4 can be easily removed from the rod-shaped body 2a. Therefore, for example, after all installation processes for the air conditioner 100 and other ceiling-suspended objects in the ceiling space are completed, if it becomes necessary to remove the sheet member 4 covering the upper portion near the side surface 112 of the air conditioner main body 110, the sheet member 4 can be easily removed by pulling the rod-shaped body 2c out of the support rod 18 and pulling the sheet member 4 out of the rod-shaped body 2a. After removing the sheet member 4, the rod-shaped body 2a can be stored parallel to the base member 5. By storing the rod-shaped body 2a parallel to the base member 5, the rod-shaped body 2a can be prevented from getting in the way of subsequent maintenance work. However, the sheet member 4 does not necessarily have to be removed from the workspace securing device 1.

[0077] In addition, other than the points described above, this embodiment is the same as that described in any of the first to third embodiments.

[0078] (Fifth embodiment) Next, a fifth embodiment of the present invention will be described. In the above-mentioned fourth embodiment, an example in which the width W of the work space can be reduced was described. In this embodiment, a configuration example in which the width W of the work space can be reduced in a form different from that of the fourth embodiment will be described.

[0079] 12, 13 and 14 are diagrams showing a configuration example of a work space securing device 1 in the fifth embodiment. This work space securing device 1 comprises a base member 5, a sheet member 4 and a holding member 2. The holding member 2 is a member that holds the sheet member 4, and comprises a first rod-shaped body 2a and a second rod-shaped body 2d.

[0080] The base member 5 is made of, for example, an angle bar with an L-shaped cross section, and includes a flat plate portion 5a and a vertical plate portion 5b. In the present embodiment, the base member 5 has the vertical plate portion 5b disposed on the side opposite to the direction in which the sheet member 4 is unfolded, and a support member such as a hanging bolt 200 that supports the air conditioner 100 in a suspended state is attached to the vertical plate portion 5b. However, the arrangement of the base member 5 is not limited to this.

[0081] The first rod-shaped body 2a is made of, for example, an angle bar with an L-shaped cross section. The first rod-shaped body 2a is attached to one end of the flat plate portion 5a of the base member 5 by a bolt 8a. That is, one longitudinal end (base end) of the first rod-shaped body 2a is attached to the base member 5 so as to be rotatable around the shaft of the bolt 8a. Furthermore, the other longitudinal end (tip end) of the first rod-shaped body 2a rotatably holds one end (base end) of the second rod-shaped body 2d.

[0082] The second rod-shaped body 2d is formed, for example, from an angle bar with an L-shaped cross section. The second rod-shaped body 2d is shorter than the first rod-shaped body 2a and has a length corresponding to the width W to be secured as a working space. The second rod-shaped body 2d is attached to the tip end of the first rod-shaped body 2a by a bolt 8c. That is, one longitudinal end (base end) of the second rod-shaped body 2d is attached to the first rod-shaped body 2a so as to be rotatable around the shaft of the bolt 8c.

[0083] The workspace securing device 1 includes a position changing member 10a that rotates the first rod-shaped body 2a in a predetermined rotational direction R1 around the shank of the bolt 8a to change its position relative to the base member 5, and a position changing member 10b that rotates the second rod-shaped body 2d in a predetermined rotational direction R4 around the shank of the bolt 8c to change its position relative to the first rod-shaped body 2a. These position changing members 10a and 10b have the same configuration as the above-mentioned position changing member 10. That is, the position changing member 10a includes a biasing member 11 that rotates the first rod-shaped body 2a in the predetermined rotational direction R1 to a state in which it protrudes to the side of the base member 5, and a stopper 13 that stops the rotation of the first rod-shaped body 2a at a position rotated approximately 90 degrees from a state in which the first rod-shaped body 2a is parallel to the base member 5. The position-changing member 10b also includes a biasing member 11 that rotates the second rod-shaped body 2d in a predetermined rotational direction R4 to displace the second rod-shaped body 2d into a state in which it protrudes to the side of the first rod-shaped body 2a, and a stopper 13 that stops the rotation of the second rod-shaped body 2d at a position rotated approximately 90 degrees from a state in which the second rod-shaped body 2d is parallel to the first rod-shaped body 2a. In this embodiment, the sheet member 4 functions as the stopper 13 of the position-changing member 10b.

[0084] 14, one end of the sheet member 4 is attached to the flat plate portion 5a of the base member 5, and the other end is attached to the second rod-shaped body 2d. For example, one end of the sheet member 4 is fixed to the base member 5 by a fixing means such as adhesive tape, and is held in a position above the side surface 112 of the air conditioner 100. In addition, a cylindrical portion is formed at the other end of the sheet member 4, and the second rod-shaped body 2d is inserted into this cylindrical portion, thereby holding the other end of the sheet member 4 by the second rod-shaped body 2d.

[0085] As shown in FIG. 12, the workspace securing device 1 having the above configuration can store the first rod-shaped body 2a in a state parallel to the base member 5 against the biasing force of the biasing member 11, and can also store the second rod-shaped body 2d in a state parallel to the first rod-shaped body 2a against the biasing force of the biasing member 11. At this time, by folding the sheet member 4, the sheet member 4 can also be stored on the upper surface side of the base member 5. This workspace securing device 1 is equipped with a restricting member 19 that restricts changes in the position of the first rod-shaped body 2a and the second rod-shaped body 2d. The restricting member 19 is a member that restricts changes in the position of the first rod-shaped body 2a and the second rod-shaped body 2d when the first rod-shaped body 2a, the second rod-shaped body 2d, and the sheet member 4 are stored in a state parallel to the base member 5, as shown in FIG. 12, and maintains the stored state shown in FIG. For example, the regulating member 19 has a U-shape or a C-shape, and is attached so as to cover the base member 5 from above when the first rod-shaped body 2a, the second rod-shaped body 2d, and the sheet member 4 are stored in a state parallel to the base member 5, and restrains the first rod-shaped body 2a, the second rod-shaped body 2d, and the sheet member 4. As a result, the rotation of the first rod-shaped body 2a and the second rod-shaped body 2d in the rotation directions R1 and R4 is restricted by the regulating member 19, and the stored state parallel to the base member 5 is maintained. Therefore, when attaching the workspace securing device 1 to a support member such as a hanging bolt 200, by attaching the regulating member 19 and restricting the displacement of the first rod-shaped body 2a and the second rod-shaped body 2d, it is possible to attach the first rod-shaped body 2a and the second rod-shaped body 2d in a state where they are stored on the upper surface of the flat plate portion 5a of the base member 5. That is, the work space securing device 1 can be attached to the air conditioner 100 without the first rod-shaped body 2a, the second rod-shaped body 2d and the sheet member 4 getting in the way, resulting in excellent work efficiency.

[0086] After the work space securing device 1 is attached to a support member such as a hanging bolt 200, the restricting member 19 is removed, and a portion of the folded sheet member 4 is unfolded, as shown in FIG. 13. Accordingly, the first rod-shaped body 2a and the second rod-shaped body 2d are rotated in the rotation directions R1 and R4, respectively, by the biasing force of the biasing member 11. As a result, the work space securing device 1 unfolds the sheet member 4 between the base member 5 and the second rod-shaped body 2d, as shown in FIG. 14. When the sheet member 4 is unfolded, the sheet member 4 generates tension between the base member 5 and the second rod-shaped body 2d. This tension causes the sheet member 4 to function as a stopper 13, and holds the second rod-shaped body 2d in a position rotated approximately 90 degrees relative to the first rod-shaped body 2a.

[0087] 14, with the base member 5 attached to a support member such as the hanging bolt 200, the sheet member 4 can cover the upper part of the vicinity of the side surface 112 of the air conditioner main body 110 while being supported by the second rod-shaped body 2d. By having the sheet member 4 cover the upper part of the vicinity of the side surface 112 of the air conditioner main body 110, it is possible to prevent an obstacle such as another hanging bolt from being installed in the work space for the side surface 112 of the air conditioner main body 110.

[0088] In such a work space securing device 1, the biasing force of the biasing member 11 is constantly acting on the first rod-shaped body 2a and the second rod-shaped body 2d. Therefore, even if a force in the direction opposite to the rotational directions R1 and R4 acts on each of the first rod-shaped body 2a and the second rod-shaped body 2d in the unfolded state as shown in Fig. 14 and the first rod-shaped body 2a and the second rod-shaped body 2d are displaced, the first rod-shaped body 2a and the second rod-shaped body 2d are quickly returned to their original positions by the biasing force of the biasing member 11. Therefore, as described in the second embodiment, after unfolding the sheet member 4 above and in the vicinity of the side surface 112 of the air conditioner 100, the worker does not need to perform the operation of tightening the bolts 8a and 8c, thereby improving work efficiency.

[0089] Furthermore, if it is necessary to remove the sheet member 4 covering the upper portion near the side surface 112 of the air conditioner main body 110 after all installation steps for the air conditioner 100 and other ceiling-suspended objects in the ceiling space are completed, the sheet member 4 can be easily removed by pulling the sheet member 4 off the second rod-shaped body 2d and removing the fixing means such as adhesive tape. After removing the sheet member 4, the first rod-shaped body 2a and the second rod-shaped body 2d are each stored parallel to the base member 5 against the biasing force of the biasing member 11, and this stored state can be maintained by the restricting member 19. By storing the first rod-shaped body 2a and the second rod-shaped body 2d parallel to the base member 5, the first rod-shaped body 2a and the second rod-shaped body 2d can be prevented from getting in the way of subsequent maintenance work.

[0090] Furthermore, the work space securing device 1 of this embodiment can adjust the width W of the work space covered by the sheet member 4 by adjusting the length of the second rod-shaped body 2d. Therefore, when it is necessary to secure a work space with a narrow width W, the work space securing device 1 of this embodiment has the advantage of being easier to use than the work space securing devices 1 of the second and third embodiments.

[0091] In addition, other than the points described above, this embodiment is the same as that described in any of the first to fourth embodiments.

[0092] (Sixth embodiment) Next, a sixth embodiment of the present invention will be described. Fig. 15 is a diagram showing an example of an air conditioner 100 in which a workspace securing device 1 of this embodiment is installed. This air conditioner 100 differs from the one shown in Fig. 2 in that a refrigerant pipe 109 is connected to a connection part 104. That is, the refrigerant pipe 109 is piped vertically in the ceiling space and is connected to a connection part 104 provided on a side surface 112 of the air conditioner body 110. In order to secure a workspace near the side surface 112 of this air conditioner 100, it is preferable to arrange sheet members 4 in two locations in the front-to-rear direction of the air conditioner 100 so as to straddle the refrigerant pipe 109. Therefore, in this embodiment, a workspace securing device 1 that can be arranged in two locations so as to straddle the refrigerant pipe 109 will be described.

[0093] FIG. 16 is a diagram showing an example of a configuration in which a work space securing device 1 in this embodiment is attached to an air conditioner 100. This work space securing device 1 is configured to integrally include a work space securing device 1a and a work space securing device 1b. In other words, the work space securing device 1 has a configuration in which two work space securing devices 1a and 1b are arranged on one base member 5. For example, the work space securing device 1a has the same configuration as the work space securing device 1 described in the third embodiment. Furthermore, the work space securing device 1b has the same configuration as the work space securing device 1 described in the fifth embodiment. Note that the work space securing device 1a uses the regulating member 19 described in the fifth embodiment instead of the regulating member 15 described in the third embodiment.

[0094] The base member 5 is attached to a support member such as a hanging bolt 200 that supports the side surface 112 of the air conditioner body 110. The base member 5 has two work space securing devices 1a and 1b mounted on its flat plate portion 5a.

[0095] Fig. 17 is a diagram showing a state in which the work space securing devices 1a and 1b have deployed the sheet member 4. As shown in Fig. 17, the work space securing device 1a deploys the sheet member 4 from the refrigerant piping 109 to the back side (rear side) of the air conditioner main body 110, thereby covering the upper part of the work space near the side surface 112 of the air conditioner main body 110. Furthermore, the work space securing device 1b deploys the sheet member 4 from the refrigerant piping 109 to the front side (front side) of the air conditioner main body 110, thereby covering the upper part of the work space near the side surface 112 of the air conditioner main body 110.

[0096] Therefore, the work space securing device 1 of this embodiment has the advantage that even when the refrigerant piping 109 is arranged vertically near the side surface 112 of the air conditioner main body 110, two work space securing devices 1a, 1b that can unfold the sheet member 4 to sandwich the refrigerant piping 109 are arranged on the base member 5, and therefore a wide range of work space can be secured.

[0097] 17, when the sheet members 4 are unfolded from each of the work space securing devices 1a, 1b, the sheet members 4 can cover the upper part of the work space near the side surface 112 of the air conditioner main body 110. In particular, in this embodiment, the two sheet members 4 cover the upper part of the work space so as to straddle the refrigerant pipes 109 arranged in the vertical direction. Therefore, it is possible to prevent an obstacle such as another hanging bolt from being installed in the work space covered by the sheet members 4.

[0098] In this embodiment, an example has been described in which the work space securing device 1 described in the third embodiment is used as the work space securing device 1a, and the work space securing device 1 described in the fifth embodiment is used as the work space securing device 1b. However, this is not limited to this. In other words, the work space securing device 1 of this embodiment can be realized by appropriately selecting and combining the work space securing devices 1 described in each of the above embodiments.

[0099] In addition, other than the points described above, this embodiment is the same as that described in any of the first to fifth embodiments.

[0100] Seventh embodiment Next, a seventh embodiment of the present invention will be described. In the above embodiments, an example has been given in which the air conditioner 100 is installed in a state in which it is suspended in the ceiling space by a plurality of suspension bolts 200 hanging down from the floor slab of the upper floor. However, the structure for suspending the air conditioner 100 in the ceiling space is not necessarily limited to the form described in the above embodiments. In this embodiment, an example will be described in which the air conditioner 100 is suspended in the ceiling space using a frame body 220.

[0101] 18 is a diagram illustrating an example of a support structure for the air conditioner 100 in this embodiment. This support structure has a frame body 220 arranged on the upper surface 111 side of the air conditioner 100, and a support section 210 that supports the frame body 220 in a state where it is suspended in the ceiling space. The air conditioner 100 is supported in a state where it is suspended in the ceiling space by bolt members 223, 224 that hang down from the frame body 220. Therefore, in this embodiment, the support section 210, the frame body 220, and the bolt members 223, 224 are each provided as support members that support the air conditioner 100 in a state where it is suspended in the ceiling space.

[0102] The frame body 220 comprises a pair of frame members 221, 221 arranged along the front-to-back direction of the air conditioner 100, and a pair of frame members 222, 222 arranged along the left-to-right direction of the air conditioner 100, and the pair of frame members 221, 221 and the pair of frame members 222, 222 are arranged so that they are perpendicular to each other, and the intersections of the frame members 221, 222 are fixed with bolts and nuts to form a crisscross or rectangular frame body.

[0103] The support portion 210 includes a hanging bolt 200 and a brace bolt 212. The hanging bolt 200 is attached to a fixing bracket 215 at its upper end, and the fixing bracket 215 is fixed to a bolt member hanging from the upper floor floor slab, thereby attaching the hanging bolt 200 to hang from the upper floor floor slab. The lower end of the hanging bolt 200 is fixed to a frame body 220. In this embodiment, the lower ends of four hanging bolts 200 are fixed to the frame body 220 to support the frame body 220. For example, the four hanging bolts 200 are arranged at the four vertices of a rectangle in plan view. Connecting brackets 211 that connect the brace bolts 212 are attached to two locations, near the upper and lower ends, of the four hanging bolts 200. Two brace bolts 212, 212 are arranged between two adjacent hanging bolts 200, 200, so that they intersect with each other. One end of the brace bolt 212 is connected to a connecting fitting 211 attached to a position near the upper end of one of the two suspension bolts 200, 200, and the other end is connected to a connecting fitting 211 attached to a position near the lower end of the other suspension bolt 200. By attaching a total of eight brace bolts 212 to the four suspension bolts 200, the support part 210 has a structure that is reinforced against earthquakes.

[0104] Bolt members 223 hanging down from the frame frame body 220 support the end faces of the blow-out chamber 120 and the intake chamber 130 attached to the air conditioner main body 110. For example, the present embodiment illustrates a case where the bolt members 223 hang down from the ends of a pair of frame members 221, but this is not limited to this. Note that it is preferable that the bolt members 223 support the end faces of the blow-out chamber 120 and the intake chamber 130 via the vibration-isolating members 122 as described in the first embodiment.

[0105] Bolt members 224 hanging down from frame body 220 are connected to vibration-isolating members 115 attached to bolt connection portions 114 on side surfaces 1112, 113 of air conditioner body 110. Therefore, air conditioner body 110 is supported by bolt members 224 hanging down from frame body 220. This embodiment illustrates a case where bolt members 223 hang down from the ends of a pair of frame members 222, but the present invention is not limited to this.

[0106] The upper ends of the bolt members 224 that support the side surface 112 of the air conditioner body 110 protrude from the upper surface of the frame body 220. The work space securing device 1 is attached to the upper ends of the bolt members 224 that support the side surface 112 of the air conditioner body 110. Figure 18 shows an example in which the work space securing device 1 described in the second embodiment is attached to the upper ends of the bolt members 224. However, this is not limiting, and the work space securing device 1 of this embodiment may be one described in any of the second to sixth embodiments.

[0107] 19 is a diagram showing the unfolded state of the sheet member 4 of the work space securing device 1. In the present embodiment as well, when the sheet member 4 of the work space securing device 1 is unfolded, the sheet member 4 can cover the upper part near the side surface 112 of the air conditioner main body 110. By having the sheet member 4 cover the upper part near the side surface 112 of the air conditioner main body 110, it is possible to prevent obstacles such as other hanging bolts from being installed in the work space on the side surface 112 of the air conditioner main body 110.

[0108] 18 and 19 show an example in which the work space securing device 1 is attached to the upper end of the bolt member 224. However, the position at which the work space securing device 1 is attached is not limited to the upper end of the bolt member 224. In other words, the work space securing device 1 may be attached to the suspension bolt 200 as in the above embodiments, or may be attached to the frame body 220. When the work space securing device 1 is attached to the frame body 220, the frame member 221 constituting the frame body 220 may be used as the base member 5 of the work space securing device 1.

[0109] In addition, other than the points described above, this embodiment is the same as that described in any of the first to sixth embodiments.

[0110] (Eighth embodiment) Next, an eighth embodiment of the present invention will be described. In the above embodiments, an air conditioner 100 has been exemplified as the hanging object A. However, the above-described work space securing device 1 can also be used as a device for securing a work space near a hanging object A other than the air conditioner 100. In this embodiment, a cable wiring rack is exemplified as the hanging object A other than the air conditioner 100, and a form will be described in which the work space securing device 1 is installed to secure a work space near the rack.

[0111] 20 is a diagram showing a rack 180 for cable wiring that is placed in a ceiling space. This rack 180 has a configuration in which rod-shaped support members 183 that support cables, etc. are arranged at a predetermined interval between a pair of parallel wall members 181, 182. The pair of wall members 181, 182 extend upward by a predetermined height from both ends of the support member 183. This rack 180 is arranged along the wiring direction of the cables, etc., stores the cables, etc. inside the pair of wall members 181, 182, and supports the cables, etc. with the multiple support members 183 that are arranged at a predetermined interval.

[0112] Furthermore, rack 180 is supported at a predetermined height by a plurality of hanging bolts 200 hanging down from the upper floor floor slab. For example, support brackets 185 are arranged on the underside of rack 180 so as to cross a pair of wall portions 181, 182, and the lower ends of the hanging bolts 200 are connected to both ends of the support brackets 185, thereby supporting rack 180 at a predetermined height in the ceiling space.

[0113] In the above configuration, for example, when it is desired to secure a work space near one side surface 184 of the rack 180, the work space securing device 1 is attached to the hanging bolts 200 that support the rack 180 in the ceiling space, as shown in Fig. 20. Specifically, of the four hanging bolts 200 that support two support fittings 185 arranged at a predetermined interval, the work space securing device 1 is attached to two hanging bolts 200 that are located close to the side surface 184 where the work space is to be secured. Note that this embodiment shows an example in which the work space securing device 1 described in the second embodiment is attached to the hanging bolts 200 that support the rack 180, but this is not limited to this, and any of the work space securing devices 1 described in the above embodiments may be attached.

[0114] 21 is a diagram showing the unfolded state of the sheet member 4 of the work space securing device 1. In the present embodiment as well, when the sheet member 4 of the work space securing device 1 is unfolded, the sheet member 4 can cover the upper part near the side surface 184 of the rack 180, which is the suspended object A. By having the sheet member 4 cover the upper part near the side surface 184 of the rack 180, it is possible to prevent obstacles such as other suspension bolts from being installed in the work space when performing maintenance work on cables housed in the rack 180.

[0115] Note that apart from the points mentioned above, this embodiment is the same as that described in any of the first to seventh embodiments. Also, in this embodiment, a rack 180 for cable wiring is exemplified as the hanging object A. However, the hanging object A to which the work space securing device 1 is attached to secure the work space is not limited to the rack 180. For example, the hanging object A may be any one of a duct, a lighting fixture, and a ceiling underlayment, or may be something other than these.

[0116] (Variation) Although several preferred embodiments of the present invention have been described above, the present invention is not limited to those described in the above embodiments. In other words, the present invention includes applications in which various modifications are applied to those described in the above embodiments.

[0117] For example, the air conditioner 100 exemplified as the hanging object A in the above embodiment is configured such that the outlet chamber 120 and the intake chamber 130 are connected in the front-to-rear direction of the air conditioner main body 110. However, the air conditioner 100 is not limited to being configured such that the outlet chamber 120 and the intake chamber 130 are connected. For example, the air conditioner 100 may be configured with only the air conditioner main body 110, or may be configured such that the chambers are attached to only one side of the air conditioner main body 110.

[0118] In the above embodiment, the air conditioner 100 exemplified as the hanging object A is a concealed air conditioner. However, the air conditioner 100 to which the above-described workspace securing device 1 can be applied is not necessarily limited to a concealed air conditioner. For example, the air conditioner 100 may be a ceiling cassette type air conditioner or a ceiling built-in type air conditioner.

[0119] In the above embodiment, the sheet member 4 is a flexible sheet member made of, for example, fabric or a resin sheet. However, the sheet member 4 is not limited to fabric or a resin sheet. For example, the sheet member 4 may be made of a stiff sheet material such as a cardboard sheet, as long as it is foldable. However, even in this case, the sheet member 4 is preferably non-flammable, and it is preferable to use a sheet member coated with, for example, a non-flammable paint. [Explanation of symbols]

[0120] 1, 1a, 1b...work space securing device, 2...holding member, 2a, 2b, 2c, 2d...rod-shaped body, 4...sheet member, 5...base member, 11...urging member, 13...stopper, 100...air conditioner (hanging object), 112...side surface, 180...rack (hanging object).

Claims

1. A work space securing device that is installed on a suspended object or a support member that supports the suspended object in order to secure a work space near the suspended object that is supported in a suspended state in a ceiling space, a foldable seat member; a holding member having a base end attached to the suspended object or the support member, which holds the sheet member in the vicinity of the suspended object at the same height as an upper surface of the suspended object or at a position higher than an upper surface of the suspended object; Equipped with A work space securing device characterized in that the holding member secures the work space by unfolding the sheet member above the work space near the suspended object.

2. A work space securing device that is installed on a suspended object or a support member that supports the suspended object in order to secure a work space near the suspended object that is supported in a suspended state in a ceiling space, a sheet member having a size corresponding to the area of ​​the work space to be secured near the suspended object; a holding member having a base end attached to the suspended object or the support member, which holds the sheet member in a deployed state above the work space at the same height as the upper surface of the suspended object or at a position higher than the upper surface of the suspended object; A work space securing device comprising:

3. The hanging object is an air conditioner, The work space creating device according to claim 1 or 2, characterized in that the holding member holds the sheet member in an unfolded state above the side of the air conditioner, thereby creating a work space near the side of the air conditioner.

4. A work space securing device as described in any one of claims 1 to 3, characterized in that the holding member comprises a pair of rod-shaped bodies arranged parallel to each other and protruding outward from the side of the suspended object from a position at the same height as the upper surface of the suspended object or a position higher than the upper surface of the suspended object, and the pair of rod-shaped bodies support both ends of the sheet member.

5. a long base member attached to the support member that supports the suspended object in a suspended state and arranged parallel to a side surface of the suspended object; Further provided with 5. The work space securing device according to claim 4, wherein one end of each of the pair of rod-shaped bodies is attached to the base member.

6. 6. The work space securing device according to claim 5, wherein one end of each of the pair of rod-shaped bodies attached to the base member is rotatable relative to the base member.

7. a biasing member that rotates the pair of rod-shaped bodies to displace them into a state in which they protrude outward from the side surface of the suspended object; 7. The work space securing device according to claim 6, further comprising:

8. The holding member is a first rod-shaped body disposed at the same height as an upper surface of the suspended object or at a position higher than the upper surface of the suspended object so as to protrude outward from a side surface of the suspended object; a second rod-shaped body attached to a tip of the first rod-shaped body and disposed in a state substantially parallel to a side surface of the suspended object; and 4. The work space securing device according to claim 1, wherein one end of the sheet member is attached to the second rod-shaped body and the other end is attached to the upper surface or a position above the suspended object.

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