Bearing means fixing structure

Abstract

To provide a fixing structure of bearing means, which makes it possible to improve the installability of a fireproof covering material while securing the fixability of the bearing means.SOLUTION: The fixing structure of the bearing means is a structure for fixing the bearing means for rotatably supporting a winding shaft 40 to a wooden first beam member 2d. The fixing structure includes: a first fireproof coating material 71 that constitutes at least a portion corresponding to the first beam member 2d and the vicinity portion thereof, out of a ceiling material 2b; a second fireproof coating material 72 that covers at least a surface of the first beam member 2d on the side to which the bearing means is fixed; and a third fireproof coating material 73 that covers at least a portion corresponding to the bearing means and the vicinity thereof, out of a lower surface of an upper floor material 2c. The first fireproof coating material 71, the second fireproof coating material 72, and the third fireproof coating material 73 are formed continuously, and the bearing means is fixed to the first beam member 2d by a beam-side fixture 91.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a fixing structure for a bearing means. [Background technology]

[0002] Conventionally, one technique for fixing a support bracket that constitutes a shutter device installed at an opening in a building and that supports both the left and right ends of a winding drum that winds up a shutter curtain to a beam located between a ceiling material and a floor material has been disclosed, in which an angle iron attached to the support bracket is directly abutted against the beam, and the angle iron is fixed to the main body via a bolt (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2019-206815 Summary of the Invention [Problem to be solved by the invention]

[0004] In recent years, there has been an increasing need to install shutter devices in wooden buildings with a predetermined fire resistance. However, when the entire outer surfaces of wooden flooring and wooden beams, which are components of such wooden buildings, are covered with fire-resistant covering material and a support bracket is fixed to one of the wooden beams via the fire-resistant covering material using the conventional technology, for example, when a large number of wooden beams are installed, the work of covering the wooden beams with the fire-resistant covering material may require a great deal of effort and installation costs. Therefore, there is room for improvement in terms of improving the installability of the fire-resistant covering material while ensuring the fixation of bearing means such as the support bracket.

[0005] The present invention is intended to solve the problems in the above-mentioned conventional technology, and aims to provide a fixing structure for a bearing means that can improve the installation ease of fire-resistant covering material while ensuring the fixation of the bearing means. [Means for solving the problem]

[0006] In order to solve the above-mentioned problems and achieve the object, the fixing structure for a bearing means described in claim 1 is a fixing structure for fixing a bearing means that rotatably supports a winding shaft for opening and closing an opening provided in the skeleton of a building to a wooden beam located between a ceiling material and a wooden floor material among the components that make up the skeleton, and comprises a first fire-resistant covering material that constitutes at least the portion of the ceiling material that corresponds to the wooden beam and / or a portion nearby thereto, a second fire-resistant covering material that covers at least the surface of the wooden beam on which the bearing means is fixed, and a third fire-resistant covering material that covers at least the portion of the underside of the wooden floor material that corresponds to the bearing means and a portion nearby thereto, wherein the first fire-resistant covering material, the second fire-resistant covering material, and the third fire-resistant covering material are configured continuously, and the bearing means is fixed to the wooden beam by a fixing device that is inserted into the wooden beam so as to penetrate at least the second fire-resistant covering material.

[0007] The fixing structure of the bearing means described in claim 2 is the fixing structure of the bearing means described in claim 1, and further comprises: a fourth fire-resistant covering material that is a wooden beam other than the wooden beam among the components that constitute the body, and is arranged so as to face the wooden beam at a distance; and a fifth fire-resistant covering material that constitutes at least the portion of the ceiling material that corresponds to the other wooden beam and the surrounding area thereof, and the first fire-resistant covering material, the second fire-resistant covering material, the third fire-resistant covering material, the fourth fire-resistant covering material, and the fifth fire-resistant covering material are configured continuously.

[0008] The fixing structure of the bearing means described in claim 3 is the fixing structure of the bearing means described in claim 2, in which the fourth fire-resistant covering material is arranged to cover the surface of the other wooden beam material that faces the wooden beam material.

[0009] The fixing structure for a bearing means described in claim 4 is a fixing structure for a bearing means described in any one of claims 1 to 3, which has an installation space formed by approximately bending the second fire-resistant covering material, and is provided with an installation space for installing an accessory member used when fixing the bearing means to the wooden beam material on the wooden beam material. The fixing structure for a bearing means described in claim 5 is a fixing structure for fixing a bearing means, which rotatably supports a winding shaft for opening and closing an opening provided in the skeleton of a building, to a wooden beam material located between a ceiling material and a wooden floor material among members constituting the skeleton, the fixing structure comprising: a first fire-resistant covering material constituting at least a portion of the ceiling material corresponding to the wooden beam material and / or a portion adjacent thereto; a second fire-resistant covering material covering at least a surface of the wooden beam material on which the bearing means is fixed; and a third fire-resistant covering material covering at least a portion of the underside of the wooden floor material corresponding to the bearing means and a portion adjacent thereto; the first fire-resistant covering material, the second fire-resistant covering material, and the third fire-resistant covering material being configured continuously; and the bearing means being fixed to the wooden beam material by a fixing device inserted into the wooden beam material so as to penetrate at least the second fire-resistant covering material. and a fourth fire-resistant covering material that is fixed to the wooden beams and that is a member that constitutes the framework and is a different wooden beam from the wooden beams, and that is provided between the wooden beams and the other wooden beams that are provided facing the wooden beams at a distance, the fourth fire-resistant covering material being provided so as to cover the surface of the other wooden beams that faces the wooden beams, and a fifth fire-resistant covering material that constitutes at least the portion of the ceiling material that corresponds to the other wooden beams and the vicinity thereof, and that is provided at a distance from the other wooden beams. By configuring the first fire-resistant covering material, the second fire-resistant covering material, the third fire-resistant covering material, the fourth fire-resistant covering material, and the fifth fire-resistant covering material being continuous, it is possible to not cover beams that are provided in the framework other than the wooden beams and the other wooden beams with fire-resistant covering material. The fixing structure for a bearing means described in claim 6 is a fixing structure for fixing a bearing means, which rotatably supports a winding shaft for moving an opening / closing body that opens and closes an opening provided in the skeleton of a building, to a wooden beam material that is located between a ceiling material and a wooden floor material among members that make up the skeleton, and which comprises: a first fire-resistant covering material that constitutes at least a portion of the ceiling material that corresponds to the wooden beam material and / or a portion nearby thereto; a second fire-resistant covering material that covers at least a surface of the wooden beam material on which the bearing means is fixed; and a third fire-resistant covering material that covers at least a portion of the underside of the wooden floor material that corresponds to the bearing means and a portion nearby thereto; and the first fire-resistant covering material, the second fire-resistant covering material, and the third fire-resistant covering material are configured continuously, and the first fire-resistant covering material, the second fire-resistant covering material, and the third fire-resistant covering material are fixed to the wooden beam material by a fixing device that is inserted into the wooden beam material so as to penetrate at least the second fire-resistant covering material. The bearing means is fixed to the wooden beams, and the structural members further include: a fourth fire-resistant covering material that is a wooden beam different from the wooden beams among the components that make up the structure, and is provided between the wooden beams and the other wooden beams that are arranged so as to face the wooden beams at a distance, the fourth fire-resistant covering material being provided at a distance from each of the wooden beams and the other wooden beams; and a fifth fire-resistant covering material that constitutes at least the portion of the ceiling material that corresponds to the other wooden beams and the vicinity thereof, the fifth fire-resistant covering material being provided at a distance from the other wooden beams, and by configuring the first fire-resistant covering material, the second fire-resistant covering material, the third fire-resistant covering material, the fourth fire-resistant covering material, and the fifth fire-resistant covering material being configured continuously, it is possible to not cover the beams that are provided in the structural member other than the wooden beams with fire-resistant covering material. [Effects of the Invention]

[0010] According to the fixing structure for the bearing means of claim 1, the first fire-resistant covering material, the second fire-resistant covering material, and the third fire-resistant covering material are configured continuously, so that, for example, when a large number of wooden beams are installed, it becomes easy to combine the above-mentioned configuration in the vicinity of the wooden beams to which the bearing means is fixed and a membrane structure (a structure in which the ceiling material and wooden flooring are covered with fire-resistant covering material, but the beams are not covered with fire-resistant covering material) in the vicinity of the other beams. Therefore, compared to the conventional technology (a technology in which the entire outer surfaces of the wooden flooring and wooden beams are covered with fire-resistant covering material), the effort and installation costs required for covering the wooden beams with fire-resistant covering material can be reduced, and the installability of the fixing structure can be improved. Furthermore, since the bearing means is fixed to the wooden beams by fasteners that are inserted into the wooden beams so as to penetrate at least the second fire-resistant covering material, the bearing means is firmly fixed to the wooden beams, and in the event of a fire occurring around the opening, the ceiling material, wooden floor material, and wooden beams located around the bearing means can be prevented from burning by the flames of the fire, thereby reducing damage from the fire. From the above, it is possible to increase the usability of the fixing structure.

[0011] According to the fixing structure for the bearing means of claim 2, the first fire-resistant covering material, the second fire-resistant covering material, the third fire-resistant covering material, the fourth fire-resistant covering material, and the fifth fire-resistant covering material are configured continuously, so that when combining the above configuration with the membrane structure, either the first fire-resistant covering material or the fifth fire-resistant covering material can be easily connected to the fire-resistant covering material of the membrane structure, further improving the installability of the fixing structure. Furthermore, in the event of a fire breaking out around the opening, the ceiling material, wooden floor material, wooden beams, and other wooden beams located around the bearing means can be prevented from burning by the flames of the fire, etc., and damage from the fire can be further reduced.

[0012] According to the fixing structure of the bearing means described in claim 3, the fourth fire-resistant covering material is arranged to cover the surface of the other wooden beam material that faces the wooden beam material, thereby enabling the fourth fire-resistant covering material to be firmly supported and improving the ease of installation of the fourth fire-resistant covering material.

[0013] According to the fixing structure of the bearing means described in claim 4, an installation space is formed by approximately bending the second fire-resistant covering material, and is provided with an installation space for installing an accessory member used when fixing the bearing means to a wooden beam on the wooden beam.Therefore, the accessory member can be easily installed on the wooden beam, thereby improving the ease of installing the accessory member. According to the fixing structure for the bearing means described in claim 5, the first fire-resistant covering material, the second fire-resistant covering material, and the third fire-resistant covering material are configured continuously, so that, for example, when a large number of wooden beams are installed, it becomes easy to combine the above-mentioned configuration in the vicinity of the wooden beams to which the bearing means are fixed and a membrane structure (a structure in which the ceiling material and wooden flooring are covered with fire-resistant covering material, but the beams are not covered with fire-resistant covering material) in the vicinity of the other beams. Therefore, compared to the conventional technology (a technology in which the entire outer surfaces of the wooden flooring and wooden beams are covered with fire-resistant covering material), the effort and installation costs required for covering the wooden beams with fire-resistant covering material can be reduced, and the installability of the fixing structure can be improved. Furthermore, since the bearing means is fixed to the wooden beams by fasteners that are inserted into the wooden beams so as to penetrate at least the second fire-resistant covering material, the bearing means is firmly fixed to the wooden beams, and in the event of a fire occurring around the opening, the ceiling material, wooden floor material, and wooden beams located around the bearing means can be prevented from burning by the flames of the fire, thereby reducing damage from the fire. From the above, it is possible to increase the usability of the fixing structure. Furthermore, because the first fire-resistant covering material, the second fire-resistant covering material, the third fire-resistant covering material, the fourth fire-resistant covering material, and the fifth fire-resistant covering material are configured continuously, when combining the above configuration with the membrane structure, it is possible to easily connect either the first fire-resistant covering material or the fifth fire-resistant covering material to the fire-resistant covering material of the membrane structure, further improving the ease of installation of the fixed structure. Furthermore, in the event of a fire breaking out around the opening, it is possible to prevent the flames of the fire from burning the ceiling material, wooden floor material, wooden beams, and other wooden beams located around the bearing means, thereby further reducing damage from the fire. According to the fixing structure for the bearing means described in claim 6, the first fire-resistant covering material, the second fire-resistant covering material, and the third fire-resistant covering material are configured continuously, so that, for example, when a large number of wooden beams are installed, it becomes easy to combine the above-mentioned configuration near the wooden beams to which the bearing means are fixed and a membrane structure (a structure in which the ceiling material and wooden flooring are covered with fire-resistant covering material, but the beams are not covered with fire-resistant covering material) near the other beams. Therefore, compared to the conventional technology (a technology in which the entire outer surfaces of the wooden flooring and wooden beams are covered with fire-resistant covering material), the effort and installation costs required for covering the wooden beams with fire-resistant covering material can be reduced, and the installability of the fixing structure can be improved. Furthermore, since the bearing means is fixed to the wooden beams by fasteners that are inserted into the wooden beams so as to penetrate at least the second fire-resistant covering material, the bearing means is firmly fixed to the wooden beams, and in the event of a fire occurring around the opening, the ceiling material, wooden floor material, and wooden beams located around the bearing means can be prevented from burning by the flames of the fire, thereby reducing damage from the fire. From the above, it is possible to increase the usability of the fixing structure. Furthermore, because the first fire-resistant covering material, the second fire-resistant covering material, the third fire-resistant covering material, the fourth fire-resistant covering material, and the fifth fire-resistant covering material are configured continuously, when combining the above configuration with the membrane structure, it is possible to easily connect either the first fire-resistant covering material or the fifth fire-resistant covering material to the fire-resistant covering material of the membrane structure, further improving the ease of installation of the fixed structure. Furthermore, in the event of a fire breaking out around the opening, it is possible to prevent the flames of the fire from burning the ceiling material, wooden floor material, wooden beams, and other wooden beams located around the bearing means, thereby further reducing damage from the fire. [Brief explanation of the drawings]

[0014] [Figure 1] 1 is a front view of an opening and closing device according to an embodiment of the present invention; [Figure 2] FIG. 2 is a cross-sectional view taken along the line AA in FIG. 1 (partially omitted). [Figure 3] FIG. 3 is an enlarged view of the periphery of the storage section in FIG. 2. [Figure 4] 4 is a cross-sectional view taken along the line BB in FIG. 3 (partially omitted). [Figure 5]3 is a diagram showing a modified example of the fixing structure of the bearing means, showing a region corresponding to FIG. 2. FIG. [Figure 6] 3 is a diagram showing a modified example of the fixing structure of the bearing means, showing a region corresponding to FIG. 2. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0015] Hereinafter, embodiments of the fixing structure for bearing means according to the present invention will be described in detail with reference to the accompanying drawings. First, [I] the basic concept of the embodiment will be explained, then [II] specific contents of the embodiment will be explained, and finally, [III] modifications to the embodiment will be explained. However, the present invention is not limited to the embodiment.

[0016] [I] Basic Concept of the Embodiment First, the basic concept of the embodiment will be described. The embodiment generally relates to a fixing structure for fixing a bearing means for rotatably supporting a winding shaft for moving an opening / closing body that opens and closes an opening provided in the skeleton of a building to a wooden beam material that is located between a ceiling material and a wooden floor material, among the members that make up the skeleton.

[0017] Here, the specific structure and type of "building" are arbitrary, but the concept includes, for example, public facilities, commercial facilities, detached houses, and collective housing such as apartments and condominiums.

[0018] Furthermore, an "opening" is an opening formed in a part of the building frame (for example, a wall material, a floor material, a ceiling material, etc.) for installing an entrance or a window.

[0019] Furthermore, the term "opening / closing body" is a concept that includes shutter curtains for all types of shutter devices (for example, heavy shutters, lightweight shutters, etc.). The opening and closing directions of an opening / closing device equipped with this opening / closing body include, for example, up and down, left and right, and front and back. The drive method of the opening / closing device is arbitrary, and examples of such include a "manual opening / closing device" and an "electric opening / closing device." More specifically, such concepts include a "manual opening / closing device" (so-called manual fire shutter) and an "electric opening / closing device" (so-called electric fire shutter) that can be lowered by its own weight based on a signal from a fire detector or an operating device.

[0020] Furthermore, the "open / closed state of the opening / closing body" is a concept that includes, for example, a "fully closed state," a "fully open state," and a "half-open state." Of these, the "fully closed state" is a state in which the opening is fully closed by the opening / closing body, and in the embodiment, the position of the opening / closing body in the fully closed state is referred to as the "fully closed position." Furthermore, the "fully open state" is a state in which the opening is fully opened by the opening / closing body, and in the embodiment, the position of the opening / closing body in the fully open state is referred to as the "fully open position." Furthermore, the "half-open state" is a state in which the opening / closing body is positioned between the fully closed position and the fully open position.

[0021] Furthermore, the specific structure and type of the "members that make up the framework" are arbitrary, but the concept includes, for example, wall materials, pillar materials, beam materials, floor materials, ceiling materials, and the like.

[0022] In the following embodiments, we will explain the case where the opening and closing device is a vertically opening and closing type, electrically operated heavy-duty shutter (specifically, an electrically operated fire shutter) that is installed in an opening in an interior wall material that divides rooms inside a building such as a public facility (e.g., a city hall).

[0023] [II] Specific details of the embodiment Next, specific details of the embodiment will be described.

[0024] (composition) First, the configuration of an opening and closing device to which the fixing structure of the bearing means according to the embodiment is applied will be described.

[0025] In the following description, the X direction in FIG. 1 is referred to as the left-right direction of the opening and closing device (the -X direction is the left direction of the opening and closing device, and the +X direction is the right direction of the opening and closing device), the Y direction in FIG. 2 is referred to as the front-to-back direction of the opening and closing device (the +Y direction is the front direction of the opening and closing device (toward the outside of the room) and the -Y direction is the rear direction of the opening and closing device (toward the inside of the room)), and the Z direction in FIG. 1 is referred to as the up-down direction of the opening and closing device (the +Z direction is the up direction of the opening and closing device, and the -Z direction is the down direction of the opening and closing device).

[0026] 1 to 4, the opening and closing device 1 generally includes a storage section 10, a guide rail 20, an opening and closing body 30, a winding shaft 40, an opening and closing machine 60, an operating device (not shown), and a control device (not shown). However, unless otherwise specified, the configuration of the opening and closing device 1 is the same as that of the conventional device, and therefore description thereof will be omitted.

[0027] The method of attaching (or connecting) the various components that make up the opening and closing device 1 to each other is arbitrary, but for example, a method is used in which the attachment side component is attached (or connected) to the attachment side component via an attachment hole (for example, a rivet hole, a screw hole, a screw hole, etc.) formed in the attachment side component or the component to which it is attached using a fastener (for example, a rivet, an attachment screw (for example, an anchor screw, etc.), a screw, etc.), welding, an adhesive, double-sided tape, etc.

[0028] As for the connection of the devices constituting this switchgear 1, specifically, the control device is electrically connected to each of the switchgear 60 and the operating device via wiring (not shown), which allows communication or power supply between the control device and the switchgear 60 and the operating device directly or indirectly.

[0029] (Configuration - Storage section) Returning to Fig. 2, the storage unit 10 is a storage means for storing the opening / closing body 30. This storage unit 10 is configured using, for example, a ceiling-mounted storage case (or may be an exposed-mounted storage case), and specifically, is formed of a hollow steel body, and is installed above the upper end of an opening 3 provided in a building frame 2 (specifically, an inner wall material 2a of a room) as shown in Figs. 2 to 4.

[0030] More specifically, as shown in Figures 2 and 3, it is installed on a wooden beam 2d (hereinafter referred to as the "first beam 2d") located between a ceiling material 2b and a wooden floor material 2c (hereinafter referred to as the "upper floor material 2c") located above the ceiling material 2b.

[0031] The first beam 2d is a beam having a substantially rectangular cross section along the YZ plane, and is connected to the upper floor member 2c as shown in Fig. 2, and is disposed opposite another wooden beam 2g (hereinafter referred to as "second beam 2g") at a distance. The second beam 2g is a beam different from the first beam 2d, and is also a beam having a substantially rectangular cross section along the YZ plane, and is disposed further rearward than the first beam 2d as shown in Fig. 2, and is connected to the upper floor member 2c.

[0032] Furthermore, a winding shaft 40 is stored inside the storage section 10, and when the opening / closing body 30 is wound up on the winding shaft 40, at least a portion of the opening / closing body 30 is also stored inside the storage section 10.

[0033] As shown in FIG. 4, the storage section 10 includes a drive side bearing plate 11, a drive side mounting portion 12, a driven side bearing plate 13, a driven side mounting portion 14, and a case plate 15.

[0034] (Configuration - Storage section - Drive side bearing plate, Drive side mounting section) The drive side bearing plate 11 is a plate material for covering the left end of the storage space of the storage section 10, and as shown in Figure 4, is arranged approximately vertically so as to cover the left end of the storage space, and is connected to the drive side mounting section 12 by a fixing device or the like.

[0035] The drive-side mounting portion 12 is for mounting the drive-side bearing plate 11 to the first beam 2d via a base member 80, which will be described later. This drive-side mounting portion 12 is made up of, for example, a combination of multiple known steel plates (one example being an L-shaped metal fitting and a base member that connects the L-shaped metal fitting and the base member 80), and is provided between the drive-side bearing plate 11 and the base member 80, as shown in Figures 3 and 4. The above-mentioned "drive-side bearing plate 11" and "drive-side mounting portion 12" together correspond to the "bearing means" in the claims.

[0036] (Configuration - Storage section - Driven side bearing plate, Driven side mounting section) The driven side bearing plate 13 is a plate material for covering the right end of the storage space, and as shown in Figure 4, is arranged approximately vertically so as to cover the right end of the storage space, and is connected to the driven side mounting part 14 by a fixing device or the like.

[0037] The driven-side mounting portion 14 is for mounting the driven-side bearing plate 13 to the first beam 2d via a base member 80, which will be described later. This driven-side mounting portion 14 is made up of, for example, a combination of multiple known steel plates (one example being an L-shaped metal fitting and a base member that connects the L-shaped metal fitting and the base member 80), and is provided between the driven-side bearing plate 13 and the base member 80. The "driven-side bearing plate 13" and "driven-side mounting portion 14" together correspond to the "bearing means" in the claims.

[0038] (Configuration - Storage section - Case plate) Returning to Figure 2, the case plate 15 is a curved plate material for covering the rear, top, and bottom surfaces of the storage space, and as shown in Figures 2 to 4, is arranged to cover the rear, top, and bottom surfaces of the storage space, and is connected to the base member 80, etc., described later, by fixing devices, etc.

[0039] (Configuration - Storage section - Other configurations) 3, ceiling material 2b located below storage section 10 is provided with lintels 10a on both the outside and inside of the room centered around opening / closing body 30. Between these lintels 10a, lintel openings 10b are formed over the entire length of opening 3 in the left-right direction, and opening / closing body 30 is taken in and out through these lintel openings 10b.

[0040] (Configuration - Guide rail) Returning to Fig. 1, the guide rail 20 guides the opening / closing body 30 to move along the opening / closing direction (vertical direction) of the opening 3. The guide rail 20 is an elongated body formed, for example, so that its cross section is substantially U-shaped, and as shown in Fig. 1, it is arranged in a direction substantially along the vertical direction at each of the left and right ends of the opening / closing device 1, and is fixed directly to the pillar material 2f or indirectly via a base material (not shown).

[0041] (Configuration - Opening and closing body) The opening / closing body 30 opens and closes the opening 3, and specifically, the opening / closing body 30 can be moved to a fully open state, a fully closed state, or a half open state by being moved to a closed state or an open state by the rotational drive of the winding shaft 40. The opening / closing body 30 is configured using, for example, a known shutter curtain. Specifically, as shown in FIG. 1, the opening / closing body 30 has a plurality of slats 31, and the plurality of slats 31 are fitted and connected to each other via fitting portions (not shown) formed on both the upper and lower ends of each slat 31.

[0042] In addition, each of the left and right ends of this opening / closing body 30 is inserted into the inside of the guide rail 20 through the U-shaped open end of the guide rail 20, and is able to slide inside the guide rail 20 in the vertical direction, and is restricted from falling out of the guide rail 20 in the front-to-back direction.

[0043] A seat plate 32 is connected to the lower end of the opening / closing body 30. The seat plate 32 is disposed so as to be adjacent to or in contact with a floor material 2e (hereinafter referred to as the "lower floor material 2e") located below the ceiling material 2b in the fully closed state, and is formed over the entire length of the lower end of the opening / closing body 30 in the left-right direction.

[0044] (Configuration - Winding shaft) The winding shaft 40 is used to move the opening-closing body 30 between opening and closing positions (note that in Figs. 2 and 3, the maximum winding diameter M of the winding shaft 40 is shown by an imaginary line). The winding shaft 40 is configured using, for example, a known winding shaft or the like, and is installed along the left-right direction. A connecting slat (not shown) that is connected to the upper end of the opening-closing body 30 is connected to the winding shaft 40, and by rotating the winding shaft 40, the opening-closing body 30 can be moved between opening and closing positions via the connecting slat.

[0045] As shown in FIG. 4, the take-up shaft 40 is provided with a drive-side shaft portion 41, a take-up shaft-side sprocket portion 42, and a driven-side shaft portion 43.

[0046] Of these, the drive side shaft portion 41 is a connecting means for connecting the winding shaft 40 and the drive side bearing plate 11, and is formed of a long rod-shaped body. As shown in Figure 4, the axial direction of the drive side shaft portion is arranged along the left-right direction (in Figure 4, the tip of the drive side shaft portion 41 is arranged to be located to the left of the drive side bearing plate 11), and is rotatably inserted into the drive side bearing plate 11 via a drive side bearing material (not shown).

[0047] The take-up shaft sprocket 42 transmits the rotational driving force from the opening / closing device 60 to the drive-side shaft 41 via a transmission member 52 (for example, a circular roller chain or the like). The take-up shaft sprocket 42 is configured using, for example, a known sprocket, and as shown in Fig. 4, is provided at or near the tip of the drive-side shaft 41 and is fixed to the drive-side shaft 41 by a fixture or the like.

[0048] The driven side shaft portion 43 is a connecting means for connecting the winding shaft 40 and the driven side bearing plate 13, and is formed of a long rod-shaped body. As shown in FIG. 4, the axial direction of the driven side shaft portion 43 is arranged along the left-right direction (in FIG. 4, the tip of the driven side shaft portion 43 is arranged to be located to the right of the driven side bearing plate 13), and is rotatably inserted into the driven side bearing plate 13 via a driven side bearing material (not shown).

[0049] (Configuration - Opening and closing mechanism) The opening / closing device 60 is a driving means that electrically moves the opening / closing body 30 to open or close by controlling the rotation of the winding shaft 40. This opening / closing device 60 is configured, for example, by a known opening / closing device, and as shown in Fig. 3, is provided outside the storage unit 10, closer to the interior side of the room than the storage unit 10, and is fixed by a fixing device or the like to a connecting plate 61 connected to the drive-side bearing plate 11.

[0050] (Configuration - Operating device) The operating device is an operating means that accepts operating inputs regarding the closing or opening movement of the opening / closing body 30, and is configured, for example, using a known operating means for a shutter device (for example, a wired or wireless operating device, etc.), and is provided outside the storage section 10 in a position near the opening 3.

[0051] (Configuration-Controller) The control device is a device that interconnects the various parts of the opening and closing device 1. This control device is configured using, for example, a known shutter control device, is electrically connected to the opening and closing machine 60 via wiring (not shown), and includes a communication unit, a power supply unit, a control unit, and a memory unit (all not shown).

[0052] Of these, the communication unit is a communication means for communicating between the control device and the operating device or an external device. The power supply unit is a power supply means that supplies power supplied from a commercial power source or a battery (e.g., a battery, etc.) (not shown) to each part of the control device and also to the opening / closing device 60. The control unit is a control means that controls each part of the control device. The memory unit is a memory means that stores programs and various data required for the operation of the control device.

[0053] (Configuration - fixing structure of bearing means) Returning to FIG. 2, the fixing structure of the bearing means will now be described.

[0054] This opening and closing device 1 is provided with a fixing structure for fixing the bearing means of the storage section 10 (specifically, consisting of a "drive-side bearing plate 11" and a "drive-side mounting section 12", and consisting of a "driven-side bearing plate 13" and a "driven-side mounting section 14") to the first beam 2d. The features of this fixing structure are as follows in this embodiment.

[0055] (Configuration - Fixing structure of bearing means - First feature) First, regarding a first feature of the fixing structure according to the embodiment, as shown in FIG. 2, the fixing structure includes a first fire-resistant covering material 71, a second fire-resistant covering material 72, and a third fire-resistant covering material 73.

[0056] (Configuration - Fixing structure of bearing means - First feature - First fire-resistant covering material) The first fire-resistant covering material 71 is a fire-resistant covering material located on the ceiling material 2b side. This first fire-resistant covering material 71 constitutes at least the portion of the ceiling material 2b that corresponds to the first beam 2d and / or the portion adjacent thereto. Specifically, as shown in FIG. 2, the first fire-resistant covering material 71 constitutes the portion of the ceiling material 2b that extends from the front end to the portion facing the underside of the first beam 2d.

[0057] Furthermore, the specific configuration of the first fire-resistant covering material 71 is arbitrary, but in this embodiment, it is configured to include at least one fire-stopping member 71a that can suppress combustion of the ceiling material 2b. Specifically, as shown in Figure 2, it is configured by stacking multiple fire-stopping members 71a (two stacked members in Figure 2). However, this is not limiting, and for example, in addition to the above configuration, it may further include a decorative panel (not shown) that covers the underside of the lowest fire-stopping member 71a.

[0058] Furthermore, the material of each fire-retardant member 71a is optional, and although in the embodiment it is formed from gypsum board, it is not limited to this and may be formed from, for example, gypsum plaster, calcium silicate board, glass wool material, urethane material, or a combination of these (the same applies to the materials of the other fire-retardant members 71a).

[0059] Furthermore, the thickness of each fire-retardant member 71a is arbitrary, but in this embodiment, it is set to a thickness according to the fire resistance performance of the ceiling material 2b, specifically, it is set to a thickness according to the performance of the fire-resistant structure (performance required to prevent the ceiling material 2b from falling off and the fire from spreading due to the fire until the fire is extinguished) or the quasi-fire-resistant structure (performance required to suppress the spread of the fire). However, it is not limited to this, and for example, it may be set to a thickness thicker than the thickness according to the performance of the fire-resistant structure or the quasi-fire-resistant structure (note that the same applies to the thickness of the other fire-retardant members 71a).

[0060] (Configuration - Fixing structure of bearing means - First feature - Second fire-resistant covering material) The second fire-resistant covering material 72 is a fire-resistant covering material located on the first beam member 2d side. This second fire-resistant covering material 72 is provided so as to cover at least the surface of the first beam member 2d on the side where the bearing means is fixed. Specifically, as shown in Fig. 2, the second fire-resistant covering material 72 is arranged so as to abut (or be close to) substantially the entire rear surface and the lower surface of the first beam member 2d, and is arranged so as to extend from the lower surface of the first beam member 2d to the first fire-resistant covering material 71, and is fixed to the first beam member 2d with a fastener, an adhesive, or the like.

[0061] In the following, where necessary, of the parts of the second fire-resistant covering material 72, the part 72a located on the rear side of the first beam 2d will be referred to as the "rear-side second fire-resistant covering part 72a", the part 72b located on the underside of the first beam 2d will be referred to as the "underside-side second fire-resistant covering part 72b", and the part 72c extending from the underside of the first beam 2d to the first fire-resistant covering material 71 will be referred to as the "first fire-resistant side second fire-resistant covering part 72c".

[0062] Although the specific configuration of the second fire-resistant covering material 72 is arbitrary, in this embodiment, it is configured to include at least one fire-stopping member 71a that can suppress combustion of the first beam material 2d. Specifically, as shown in Fig. 2, it is configured by stacking multiple fire-stopping members 71a (two stacked members in Fig. 2).

[0063] (Configuration - Fixing structure of bearing means - First feature - Third fire-resistant covering material) The third fire-resistant covering material 73 is a fire-resistant covering material located on the upper floor member 2c side. This third fire-resistant covering material 73 is provided so as to cover at least the portion of the underside of the upper floor member 2c that corresponds to the bearing means and the surrounding area. Specifically, as shown in Fig. 2, the third fire-resistant covering material 73 is disposed so as to abut (or be in close proximity to) substantially the entire portion of the underside of the upper floor member 2c from the first beam member 2d to the second beam member 2g, and is fixed to the upper floor member 2c with fasteners, adhesive, or the like.

[0064] Furthermore, the specific configuration of the third fire-resistant covering material 73 is arbitrary, but in this embodiment, it is configured to include at least one fire-stopping member 71a that can suppress combustion of the upper floor material 2c. Specifically, as shown in Figure 2, it is configured by stacking multiple fire-stopping members 71a (two stacked in Figure 2).

[0065] Furthermore, the specific configuration of the first fire-resistant coating material 71, the second fire-resistant coating material 72, and the third fire-resistant coating material 73 is arbitrary, but in the embodiment, the first fire-resistant coating material 71, the second fire-resistant coating material 72, and the third fire-resistant coating material 73 are configured in a continuous manner.

[0066] 2, each portion of the first fire-resistant covering material 71, the second fire-resistant covering material 72, and the third fire-resistant covering material 73 is formed integrally or separately and is provided so as to abut against the adjacent portion. Furthermore, the rear end of the first fire-resistant covering material 71 abuts against the lower end of the first fire-side second fire-resistant covering portion 72c, and the upper end of the rear-side second fire-resistant covering portion 72a abuts against the front end of the third fire-resistant covering material 73.

[0067] This makes it easier to combine, for example, when a large number of wooden beams are installed, the above configuration near the first beam 2d to which the bearing means is fixed, and a membrane structure (a structure in which the ceiling material and wooden flooring are covered with fire-resistant covering material, but the beams are not covered with fire-resistant covering material) near the other beams. Therefore, compared to conventional technology (technology in which the entire outer surfaces of the wooden flooring and wooden beams are covered with fire-resistant covering material), the effort and installation costs required for covering the wooden beams with fire-resistant covering material can be reduced, and the ease of installation of the fixing structure can be improved.

[0068] (Configuration - Fixing structure of bearing means - First feature - Other configurations) The specific configuration of the fixing structure is arbitrary, but in this embodiment, as shown in FIG. 3, the fixing structure further includes a base member 80, a suppressing portion 100, and a reinforcing portion 110.

[0069] (Configuration - Fixing structure of bearing means - First feature - Other configurations - Base member) The base member 80 is a member that supports the bearing means, and in this embodiment is made up of a combination of multiple frame members 81 (specifically, steel pipe members) each having multiple storage spaces 81a.

[0070] Specifically, as shown in Fig. 4, the base member 80 is configured by combining a plurality of frame members 81 (vertical frame members that are long in the up-down direction and horizontal frame members that are long in the left-right direction in Fig. 4) using welding or fasteners, etc., so that the front shape of the base member 80 is ladder-shaped (in Fig. 4, in addition to this configuration, two vertical frame members are arranged side by side at both the left and right ends of the base member 80). However, without being limited to this, for example, the front shape of the base member 80 may be configured by combining a plurality of frame members 81 so that it is lattice-shaped or circular (for example, a rectangular circular shape, etc.).

[0071] In the following, as necessary, of the frame materials 81 (vertical frame materials) of the base member 80, the vertical frame material 82 located on the drive-side mounting portion 12 side will be referred to as the "drive-side vertical frame material 82," the vertical frame material 83 located on the driven-side mounting portion 14 side will be referred to as the "driven-side vertical frame material 83," and the vertical frame material 84 located between the drive-side vertical frame material 82 and the driven-side vertical frame material 83 will be referred to as the "intermediate vertical frame material 84." Also, of the frame materials (horizontal frame materials) of the base member 80, the horizontal frame material 85 located on the upper floor material 2c side will be referred to as the "upper floor-side horizontal frame material 85," and the horizontal frame material 86 located on the ceiling material 2b side will be referred to as the "ceiling-side horizontal frame material 86."

[0072] In addition, this base member 80 is provided between the bearing means and the second fire-resistant covering material 72 (specifically, the rear side second fire-resistant covering portion 72a), and is provided so that the bearing means is attached to the base member 80.

[0073] 3, each frame member 81 of the base member 80 is positioned so as to abut against the rear-side second fire-resistant covering portion 72a. The driving-side vertical frame member 82 is positioned so as to abut against the driving-side mounting portion 12, and is connected to the driving-side mounting portion 12 via a fastener 90 (hereinafter referred to as the "base-side fastener 90") (or, if the base member 80 is pre-assembled at a factory, the connection may be by welding). The driven-side vertical frame member 83 is positioned so as to abut against the driven-side mounting portion 14, and is connected to the driven-side mounting portion 14 via the base-side fastener 90 (or, if the base member 80 is pre-assembled at a factory, the connection may be by welding).

[0074] In this case, the method of fixing the bearing means is arbitrary, but in the embodiment, the bearing means is fixed to the first beam 2d by a fixing device 91 (hereinafter referred to as the ``beam side fixing device 91'') that is inserted into the first beam 2d so as to penetrate at least the second fire-resistant covering material 72.

[0075] Specifically, as shown in Figures 3 and 4, the drive-side mounting portion 12 is fixed to the first beam 2d by a plurality of beam-side fasteners 91 inserted into the first beam 2d so as to penetrate the drive-side vertical frame member 82 and the second fire-resistant covering material 72. The driven-side mounting portion 14 is fixed to the first beam 2d by a plurality of beam-side fasteners 91 inserted into the first beam 2d so as to penetrate the driven-side vertical frame member 83 and the second fire-resistant covering material 72. The upper floor-side horizontal frame member 85 is fixed to the first beam 2d by a plurality of beam-side fasteners 91 inserted into the first beam 2d so as to penetrate the upper floor-side horizontal frame member 85 and the second fire-resistant covering material 72. The ceiling-side horizontal frame member 86 is fixed to the first beam 2d by a plurality of beam-side fasteners 91 inserted into the first beam 2d so as to penetrate the ceiling-side horizontal frame member 86 and the second fire-resistant covering material 72.

[0076] In this case, the method of installing each beam side fixing device 91 is arbitrary, but in the embodiment, each beam side fixing device 91 is arranged so that the head portion 91a of each beam side fixing device 91 is accommodated within the accommodation space 81a of each frame material 81 of the base member 80.

[0077] Specifically, as shown in Figure 3, each beam side fixing device 91 is inserted through a base side insertion hole (not shown) formed in each frame material 81 of the base member 80, and the head portion 91a of each beam side fixing device 91 is positioned within the above-mentioned storage space 81a, thereby providing each beam side fixing device 91.

[0078] This prevents each beam side fixing device 91 from being exposed to the outside, and reduces the transfer of heat from a fire that occurs around the opening 3 to each beam side fixing device 91 while maintaining the design around the base member 80.

[0079] By using such a base member 80, the bearing means can be firmly fixed to the first beam member 2d while suppressing damage to the second fire-resistant covering material 72 (for example, the occurrence of cracks in the second fire-resistant covering material 72) compared to when the bearing means is fixed to the first beam member 2d without using the base member 80.

[0080] (Configuration - Fixing structure of bearing means - First feature - Other configurations - Suppression section) The suppression unit 100 is a suppression means for suppressing the heat of a fire from being conducted to the beam-side fixing device 91 when a fire breaks out around the opening 3. The suppression unit 100 is configured with, for example, a known fire-resistant covering material (one example is a fire-resistant covering material formed by laminating multiple fire-stopping members 71a), and is provided on the base member 80.

[0081] 3, the suppression section 100 is arranged so that the head portion 91a and / or the portion nearby thereof of each beam-side fixing device 91 is not exposed to the outside, and is connected to the base member 80 by a fixing device, adhesive, or the like. However, without being limited to this, for example, the suppression section 100 may be provided (or filled) in at least a portion of the accommodation space 81a of each frame member 81 of the base member 80 that corresponds to the base-side through-hole, and connected to the base member 80 by a fixing device, adhesive, or the like.

[0082] Such a suppression section 100 can prevent the heat of the fire from being conducted to the beam side fixing device 91, and can prevent the first beam 2d from falling off due to the heat of the fire being conducted to the first beam 2d.

[0083] (Configuration - Fixing structure of bearing means - First feature - Other configurations - Reinforcement part) The reinforcing portion 110 is a reinforcing means for reducing the load acting on the beam-side fixing device 91 as a result of the beam-side fixing device 91 supporting the base member 80. The reinforcing portion 110 is formed, for example, from a steel plate.

[0084] Specifically, the reinforcing portion 110 is formed of a plate-like body whose cross-sectional shape along the YZ plane is approximately Z-shaped, and more specifically, as shown in Figure 3, the reinforcing portion 110 has a first reinforcing piece 111 located on the underside of the first beam member 2d, a second reinforcing piece 112 located on the rear side of the first beam member 2d, and a third reinforcing piece 113 located on the side of the base member 80.

[0085] Also, as shown in Figure 3, the reinforcing portion 110 is provided below the base member 80 and is fixed to the first beam member 2d and the base member 80 (specifically, the ceiling-side horizontal frame member 86) by a fixing device 92 (hereinafter referred to as the "reinforcing fixing device 92").

[0086] Such a reinforcing portion 110 can reduce the load acting on the beam-side fixing device 91 due to, for example, the weight of the opening / closing body 30 and the winding shaft 40. This prevents the beam-side fixing device 91 from being pulled out of the first beam 2d, and improves the stability of the installation of the base member 80.

[0087] The first feature described above makes it easy to combine the above-described structure near the first beam 2d to which the bearing means is fixed and the membrane structure near the other beams, for example, when multiple wooden beams are installed. Therefore, compared to conventional techniques (techniques in which the entire outer surfaces of wooden flooring and wooden beams are covered with fire-resistant covering material), the labor and installation costs required for covering the wooden beams with fire-resistant covering material can be reduced, improving the ease of installation of the fixing structure. Furthermore, while the bearing means is firmly fixed to the first beam 2d, in the event of a fire occurring near the opening 3, the ceiling material 2b, upper floor material 2c, and first beam 2d located near the bearing means can be prevented from burning by the flames of the fire, thereby reducing damage from the fire. These factors contribute to improving the utility of the fixing structure.

[0088] (Configuration - Fixing structure of bearing means - Second feature) Returning to Figure 2, next, regarding the second feature of the fixing structure of the embodiment, as shown in Figure 2, the fixing structure further includes a fourth fire-resistant covering material 74, a fifth fire-resistant covering material 75, a non-fire-resistant covering material 76 (shown by imaginary lines in Figure 2), and a sixth fire-resistant covering material 77.

[0089] (Configuration - Fixing structure of bearing means - Second feature - Fourth fire-resistant covering material) The fourth fire-resistant covering material 74 is a fire-resistant covering material located between the first beam 2d and the second beam 2g. The fourth fire-resistant covering material 74 is provided below the third fire-resistant covering material 73 and between the first beam 2d and the second beam 2g.

[0090] Specifically, as shown in Fig. 2, the fourth fire-resistant covering material 74 is provided so as to cover the surface of the second beam 2g facing the first beam 2d (the front surface in Fig. 2). More specifically, the fourth fire-resistant covering material 74 abuts (or is close to) substantially the entire front surface of the second beam 2g, and is disposed so as to extend from the upper end of the second beam 2g to the ceiling material 2b, and is fixed to the second beam 2g with fasteners, adhesive, or the like. This allows the fourth fire-resistant covering material 74 to be firmly supported, improving the ease of installation of the fourth fire-resistant covering material 74.

[0091] Furthermore, the specific configuration of the fourth fire-resistant covering material 74 is arbitrary, but in this embodiment, it is configured to include at least one fire-stopping member 71a that can suppress combustion of the second beam material 2g. Specifically, as shown in Figure 2, it is configured by stacking multiple fire-stopping members 71a (two stacks in Figure 2).

[0092] (Configuration - Fixing structure of bearing means - Second feature - Fifth fire-resistant covering material) The fifth fire-resistant covering material 75 is a fire-resistant covering material located on the ceiling material 2b side. This fifth fire-resistant covering material 75 constitutes at least the portion of the ceiling material 2b that corresponds to the second beam 2g and / or the portion nearby. Specifically, as shown in FIG. 2, the fifth fire-resistant covering material 75 constitutes the portion of the ceiling material 2b that extends from the rear end to the portion facing the underside of the second beam 2g.

[0093] Furthermore, the specific configuration of the fifth fire-resistant coating material 75 is arbitrary, but in the embodiment, it is configured to be approximately the same as the first fire-resistant coating material 71, and specifically, as shown in Figure 2, it is configured by stacking multiple fire-stopping members 71a (two stacks in Figure 2).

[0094] (Configuration - Fixing structure of bearing means - Second feature - Non-fireproof covering material) The non-fire-resistant covering material 76 is a covering material located on the ceiling material 2b side. This non-fire-resistant covering material 76 constitutes the portion of the ceiling material 2b that corresponds to the portion between the first beam 2d and the second beam 2g. Specifically, as shown in FIG. 2, the non-fire-resistant covering material 76 constitutes the portion of the ceiling material 2b that extends from the rear end of the first fire-resistant covering material 71 to the front end of the fifth fire-resistant covering material 75.

[0095] Furthermore, the specific configuration of the non-fire-resistant covering material 76 is arbitrary, but in this embodiment, it is configured as a known ceiling decorative panel. However, without being limited to this, for example, the fire-resistant covering material may be configured by stacking multiple fire-stopping members 71a (for example, stacking two).

[0096] (Configuration - Fixing structure of bearing means - Second feature - Sixth fire-resistant covering material) The sixth fire-resistant covering material 77 is a fire-resistant covering material located on the upper floor material 2c side. This sixth fire-resistant covering material 77 is provided so as to cover the upper surface of the upper floor material 2c, and more specifically, as shown in Fig. 2, it is arranged so as to abut on almost the entire upper surface of the upper floor material 2c, and is fixed to the upper floor material 2c with fixings, adhesive, or the like.

[0097] Furthermore, the specific configuration of the sixth fire-resistant covering material 77 is arbitrary, but in this embodiment, it is configured to include at least one fire-stopping member 71a that can suppress combustion of the upper floor material 2c. Specifically, as shown in Figure 2, it is configured by stacking multiple fire-stopping members 71a (two stacked members in Figure 2).

[0098] Furthermore, the specific configuration of the fourth fire-resistant coating material 74 and the fifth fire-resistant coating material 75 is arbitrary, but in the embodiment, the first fire-resistant coating material 71, the second fire-resistant coating material 72, the third fire-resistant coating material 73, the fourth fire-resistant coating material 74, and the fifth fire-resistant coating material 75 are configured continuously.

[0099] 2, each portion of the fourth fire-resistant covering material 74 and the fifth fire-resistant covering material 75 is formed integrally or separately and is provided so as to abut against the adjacent portion. Furthermore, the upper end of the fourth fire-resistant covering material 74 abuts against the rear end of the third fire-resistant covering material 73, and the lower end of the fourth fire-resistant covering material 74 abuts against the front end of the fifth fire-resistant covering material 75.

[0100] Due to the second feature, when combining the configuration of the second feature with the membrane structure, either the first fire-resistant covering material 71 or the fifth fire-resistant covering material can be easily connected to the fire-resistant covering material of the membrane structure, further improving the ease of installation of the fixed structure. Also, if a fire breaks out around the opening 3, the ceiling material 2b, first beam material 2d, second beam material 2g, and upper floor material 2c located around the bearing means can be prevented from burning by the flames of the fire, etc., and damage from the fire can be further reduced.

[0101] (Configuration - Bearing Means Fixing Structure - Third Feature) Next, as a third feature of the fixing structure according to the embodiment, the fixing structure further includes an installation space 120 as shown in FIG.

[0102] The installation space 120 is a space for installing an accessory member (specifically, the reinforcing portion 110) used when fixing the bearing means to the first beam member 2d on the first beam member 2d, and is provided around the reinforcing portion 110 as shown in Figure 3.

[0103] The specific size of the installation space 120 is arbitrary as long as it allows the reinforcing portion 110 to be easily installed, but in this embodiment it is set as follows.

[0104] That is, the left-right length of the installation space 120 is set to be approximately the same as the left-right length of the first beam 2d. However, this is not limiting, and for example, the installation space 120 may be set to be shorter than the left-right length of the first beam 2d.

[0105] Furthermore, the length of the installation space 120 in the front-rear direction is set to be longer than the length of the first beam 2d in the front-rear direction. However, this is not limitative, and for example, the length may be set to be equal to or shorter than the length of the first beam 2d in the front-rear direction.

[0106] Furthermore, the vertical length of the installation space 120 is set to be longer than the vertical length of the reinforcing portion 110 and shorter than the vertical length of the first beam member 2d. However, this is not limiting, and for example, the vertical length may be set to be equal to or greater than the vertical length of the first beam member 2d.

[0107] Furthermore, the method for forming the installation space 120 is arbitrary, but in this embodiment, it is formed by bending the second fire-resistant covering material 72 in a generally folded shape.

[0108] Specifically, as shown in FIG. 3, the rear side second fire-resistant covering portion 72a and the first fire-resistant side second fire-resistant covering portion 72c are each arranged so as to be approximately aligned in the vertical direction, and the lower side second fire-resistant covering portion 72b is arranged so as to be approximately aligned in the horizontal direction (i.e., by arranging the lower side second fire-resistant covering portion 72b so as to be perpendicular to the rear side second fire-resistant covering portion 72a and the first fire-resistant side second fire-resistant covering portion 72c), so that the cross-sectional shape of the second fire-resistant covering material 72 along the YZ plane is formed to be stepped.

[0109] Due to the third feature, the reinforcing portion 110 can be easily installed on the first beam member 2d, and the installability of the reinforcing portion 110 can be improved.

[0110] (Operation of the switching device) Next, the operation of the opening and closing device 1 configured as above will be explained. The operation of the opening and closing device 1 can be broadly divided into an operation under normal circumstances (hereinafter referred to as a "first operation"), an operation when a fire breaks out on the outside of the room (hereinafter referred to as a "second operation"), and an operation when a fire breaks out on the inside of the room (hereinafter referred to as a "third operation"), and each operation will be explained below. Note that the second operation and the third operation are substantially the same, and therefore an explanation of the third operation will be omitted.

[0111] (Operation of Switchgear - First Operation) 3, the bearing means is fixed to the first beam 2d by a beam-side fastener 91 that is inserted into the first beam 2d so as to penetrate the base member 80 and the second fire-resistant covering material 72, thereby firmly fixing the bearing means to the first beam 2d. Furthermore, because the base member 80 is provided between the bearing means and the second fire-resistant covering material 72, direct contact between the second fire-resistant covering material 72 and the bearing means (specifically, the drive-side mounting portion 12 and the driven-side mounting portion 14) is avoided. Therefore, for example, the second fire-resistant covering material 72 is not directly subjected to bearing pressure or the like from the bearing means, and therefore damage to the second fire-resistant covering material 72 (for example, cracking of the second fire-resistant covering material 72) can be suppressed.

[0112] (Operation of Switchgear - Second Action) For example, if a fire breaks out outside the room when the door is fully closed, the ceiling material 2b, the first beam material 2d, the second beam material 2g, and / or the upper floor material 2c will be exposed to the flames of the fire.

[0113] In this case, the ceiling material 2b, the first beam 2d, the second beam 2g, and the upper floor material 2c are prevented from burning by the first fire-resistant covering material 71 to the sixth fire-resistant covering material 77. As a result, at least a portion of the ceiling material 2b, the first beam 2d, the second beam 2g, and / or the upper floor material 2c burns, which prevents the fire from spreading from the outside to the inside of the room via the ceiling material 2b, the first beam 2d, the second beam 2g, and / or the upper floor material 2c.

[0114] (Effects of the embodiment) According to the embodiment, the first fire-resistant covering material 71, the second fire-resistant covering material 72, and the third fire-resistant covering material 73 are configured in a continuous manner. Therefore, when a large number of wooden beams are installed, for example, it is easy to combine the above configuration near the first beam 2d to which the bearing means is fixed, and a membrane structure (a structure in which the ceiling material and wooden flooring are covered with fire-resistant covering material, but the beams are not covered with fire-resistant covering material) near the other beams. Therefore, compared to the conventional technology (a technology in which the entire outer surfaces of the wooden flooring and wooden beams are covered with fire-resistant covering material), the effort and installation cost required for covering the wooden beams with fire-resistant covering material can be reduced, and the installability of the fixing structure can be improved. Furthermore, since the bearing means is fixed to the first beam 2d by the beam-side fixing device 91 inserted into the first beam 2d so as to penetrate at least the second fire-resistant covering material 72, if a fire breaks out around the opening 3, the ceiling material 2b, upper floor material 2c, and first beam 2d located around the bearing means can be prevented from burning by the flames of the fire while the bearing means is firmly fixed to the first beam 2d, thereby reducing damage from the fire. From the above, it is possible to increase the usability of the fixed structure.

[0115] Furthermore, since the first fire-resistant covering material 71, the second fire-resistant covering material 72, the third fire-resistant covering material 73, the fourth fire-resistant covering material 74, and the fifth fire-resistant covering material 75 are configured continuously, when combining the above configuration with the membrane structure, either the first fire-resistant covering material 71 or the fifth fire-resistant covering material can be easily connected to the fire-resistant covering material of the membrane structure, further improving the installability of the fixed structure. Furthermore, if a fire breaks out around the opening 3, the ceiling material 2b, the first beam material 2d, the second beam material 2g, and the upper floor material 2c located around the bearing means can be prevented from burning by the flames of the fire, further reducing damage from the fire.

[0116] Furthermore, the fourth fire-resistant covering material 74 is arranged to cover the surface of the second beam material 2g facing the first beam material 2d, thereby providing firm support for the fourth fire-resistant covering material 74 and improving the ease of installation of the fourth fire-resistant covering material 74.

[0117] In addition, the installation space 120 is formed by bending the second fire-resistant covering material 72 in an approximately folded shape, and is provided with an installation space 120 for installing an accessory member used when fixing the bearing means to the first beam 2d on the first beam 2d, so that the accessory member can be easily installed on the first beam 2d, thereby improving the ease of installing the accessory member.

[0118] [III] Modifications to the embodiment Although the embodiments of the present invention have been described above, the specific configurations and means of the present invention can be modified and improved as desired within the scope of the technical ideas of the inventions set forth in the claims. Such modifications will be described below.

[0119] (About the problem to be solved and the effects of the invention) First, the problems that the invention aims to solve and the effects of the invention are not limited to those described above, and the present invention may solve problems that are not described above or achieve effects that are not described above, or may solve only some of the problems that are described or achieve only some of the effects that are described.

[0120] (shape, numbers, structure, time series) The components illustrated in the embodiments and drawings may be modified and improved as desired within the scope of the technical concept of the present invention in terms of shape, numerical value, or the structure or chronological relationship of multiple components.

[0121] (Regarding the fixing structure of the bearing means) In the above embodiment, the fixing structure is described as including the fourth fire-resistant covering material 74, the fifth fire-resistant covering material 75, the non-fire-resistant covering material 76, and the sixth fire-resistant covering material 77. However, this is not limited to this. For example, if fire resistance means other than these fire-resistant covering materials can prevent the ceiling material 2b, the second beam material 2g, and / or the upper floor material 2c from burning, at least one of the fourth fire-resistant covering material 74, the fifth fire-resistant covering material 75, the non-fire-resistant covering material 76, and the sixth fire-resistant covering material 77 may be omitted. As an example, if the first beam material 2d faces a column material 2f (specifically, a column material 2f whose outer surface is covered with a fire-resistant covering material), the fourth fire-resistant covering material 74 and the fifth fire-resistant covering material 75 may be omitted, and the third fire-resistant covering material 73 may be disposed so as to abut (or be in close proximity to) substantially the entire portion of the underside of the upper floor material 2c from the first beam material 2d to the column material 2f.

[0122] In the above embodiment, the beam-side fasteners 91 are provided so that the head portions 91a thereof are accommodated in the accommodation spaces 81a of the frame members 81 of the base member 80. However, this is not limiting. For example, the head portions 91a of the beam-side fasteners 91 may be arranged so as to be located outside the base member 80.

[0123] Furthermore, in the above embodiment, the fixing structure is described as having a suppression portion 100 and a reinforcing portion 110, but this is not limited thereto, and for example, at least one of the suppression portion 100 or the reinforcing portion 110 may be omitted.

[0124] Furthermore, in the above embodiment, the reinforcing portion 110 is described as being provided below the base member 80, but this is not limiting, and for example, the reinforcing portion 110 may be provided above the base member 80. In this case, the reinforcing portion 110 may be fixed to the first beam member 2d and / or the upper floor member 2c by a reinforcing fastener 92. Alternatively, the reinforcing portion 110 may be provided both above and below the base member 80.

[0125] (Various fire-resistant coating materials) In the above embodiment, the various fire-resistant covering materials (specifically, the first to sixth fire-resistant covering materials 71 to 77 and the fire-resistant covering materials of the suppression section 100) are described as being constructed by stacking a plurality of fire-stopping members 71a, but this is not limited thereto. For example, they may be constructed of fire-stopping members 71a and substitute fire members (for example, wooden laminated lumber, wooden plywood, or a combination thereof) located outside the fire-stopping members 71a that suppress the progression of combustion or carbonization of the first beam material 2d. Alternatively, they may be constructed of a single layer of fire-stopping member 71a.

[0126] In the above embodiment, the second fire-resistant covering material 72 is described as having the lower-surface-side second fire-resistant covering portion 72b, but this is not limiting. For example, as shown in Fig. 5, when the reinforcing portion 110 and the installation space portion 120 are omitted, the lower-surface-side second fire-resistant covering portion 72b may be omitted.

[0127] In the above embodiment, the fourth fire-resistant covering material 74 is described as being disposed so as to abut substantially the entire front surface of the second beam 2g, but this is not limiting. For example, as shown in Fig. 6, the fourth fire-resistant covering material 74 may be disposed at a distance from the second beam 2g, and as one example, it may be disposed at a substantially midpoint between the first beam 2d and the second beam 2g (or at a position further forward or rearward than that).

[0128] (About the base material) In the above embodiment, the base member 80 has been described as including the intermediate vertical frame member 84, the upper floor-side horizontal frame member 85, and the ceiling-side horizontal frame member 86, but this is not limiting, and for example, at least one of the intermediate vertical frame member 84, the upper floor-side horizontal frame member 85, and the ceiling-side horizontal frame member 86 may be omitted. Note that, if the intermediate vertical frame member 84, the upper floor-side horizontal frame member 85, and the ceiling-side horizontal frame member 86 are omitted, the driving-side vertical frame member 82 and the driven-side vertical frame member 83 may be provided separately without being connected to each other.

[0129] In the above embodiment, the frame material 81 of the base member 80 is described as being made of steel pipe material, but this is not limited thereto. For example, it may be made of H-shaped steel material or U-shaped steel material. Alternatively, it may be made of frame material 81 without the accommodation space 81a (for example, flat steel material or steel angle bar).

[0130] In the above embodiment, the base member 80 is described as being provided between the bearing means and the second fire-resistant covering material 72, but this is not limiting. For example, the base member 80 may be omitted, and the bearing means may be provided so as to directly abut the second fire-resistant covering material 72.

[0131] (About accessories) In the above embodiment, the accessory member installed in the installation space 120 was described as the reinforcing member 110, but this is not limited to this and may be, for example, the base member 80 or a component of the storage section 10.

[0132] (Addendum) The fixing structure for the bearing means of Appendix 1 is a fixing structure for fixing a bearing means that rotatably supports a winding shaft for opening and closing an opening provided in the skeleton of a building, to a wooden beam that is located between a ceiling material and a wooden floor material among the components that make up the skeleton, and includes a first fire-resistant covering material that constitutes at least a portion of the ceiling material that corresponds to the wooden beam and / or a portion nearby thereto, a second fire-resistant covering material that covers at least the surface of the wooden beam on which the bearing means is fixed, and a third fire-resistant covering material that covers at least the portion of the underside of the wooden floor material that corresponds to the bearing means and a portion nearby thereto, wherein the first fire-resistant covering material, the second fire-resistant covering material, and the third fire-resistant covering material are configured continuously, and the bearing means is fixed to the wooden beam by a fixing device that is inserted into the wooden beam so as to penetrate at least the second fire-resistant covering material.

[0133] The fixing structure of the bearing means described in Appendix 2 is the fixing structure of the bearing means described in Appendix 1, further comprising: a fourth fire-resistant covering material provided between the wooden beam and another wooden beam that is different from the wooden beam among the components that constitute the body and is arranged so as to face the wooden beam at a distance; and a fifth fire-resistant covering material that constitutes at least the portion of the ceiling material that corresponds to the other wooden beam and the vicinity thereof, and the first fire-resistant covering material, the second fire-resistant covering material, the third fire-resistant covering material, the fourth fire-resistant covering material, and the fifth fire-resistant covering material are configured continuously.

[0134] The fixing structure of the bearing means described in Appendix 3 is the fixing structure of the bearing means described in Appendix 2, in which the fourth fire-resistant covering material is arranged to cover the surface of the other wooden beam material that faces the wooden beam material.

[0135] The fixing structure of the bearing means described in Appendix 4 is a fixing structure of the bearing means described in any one of Appendixes 1 to 3, which has an installation space formed by approximately bending the second fire-resistant covering material, and is provided with an installation space for installing an accessory member used when fixing the bearing means to the wooden beam material on the wooden beam material.

[0136] (Effect of supplementary notes) According to the fixing structure for the bearing means described in Appendix 1, the first fire-resistant covering material, the second fire-resistant covering material, and the third fire-resistant covering material are configured continuously, so that, for example, when a large number of wooden beams are installed, it becomes easy to combine the above-mentioned configuration in the vicinity of the wooden beams to which the bearing means are fixed and a membrane structure (a structure in which the ceiling material and wooden flooring are covered with fire-resistant covering material, but the beams are not covered with fire-resistant covering material) in the vicinity of the other beams. Therefore, compared to the conventional technology (a technology in which the entire outer surfaces of the wooden flooring and wooden beams are covered with fire-resistant covering material), the effort and installation cost required for covering the wooden beams with fire-resistant covering material can be reduced, and the installability of the fixing structure can be improved. Furthermore, since the bearing means is fixed to the wooden beams by fasteners that are inserted into the wooden beams so as to penetrate at least the second fire-resistant covering material, the bearing means is firmly fixed to the wooden beams, and in the event of a fire occurring around the opening, the ceiling material, wooden floor material, and wooden beams located around the bearing means can be prevented from burning by the flames of the fire, thereby reducing damage from the fire. From the above, it is possible to increase the usability of the fixing structure.

[0137] According to the fixing structure of the bearing means of Appendix 2, the first fire-resistant covering material, the second fire-resistant covering material, the third fire-resistant covering material, the fourth fire-resistant covering material, and the fifth fire-resistant covering material are configured continuously, so that when combining the above configuration with the membrane structure, either the first fire-resistant covering material or the fifth fire-resistant covering material can be easily connected to the fire-resistant covering material of the membrane structure, further improving the installability of the fixing structure. Furthermore, in the event of a fire breaking out around the opening, the ceiling material, wooden floor material, wooden beams, and other wooden beams located around the bearing means can be prevented from burning by the flames of the fire, etc., and damage from the fire can be further reduced.

[0138] According to the fixing structure of the bearing means in Appendix 3, the fourth fire-resistant covering material is arranged to cover the surface of the other wooden beam material that faces the wooden beam material, thereby providing firm support for the fourth fire-resistant covering material and improving the ease of installation of the fourth fire-resistant covering material.

[0139] According to the fixing structure of the bearing means in Appendix 4, an installation space is formed by bending the second fire-resistant covering material into an approximately folded shape, and is provided with an installation space for installing an accessory member used when fixing the bearing means to a wooden beam on the wooden beam.This makes it possible to easily install the accessory member on the wooden beam, thereby improving the ease of installing the accessory member. [Explanation of symbols]

[0140] 1 Switchgear 2 skeleton 2a Interior wall material 2b Ceiling material 2c Upper floor material 2d 1st beam material 2e Lower floor material 2f pillar material 2g Second beam 3 Opening 10 Storage area 10a Lintel 10b Lintel opening 11 Drive side bearing plate 12 Drive side mounting part 13 Driven side bearing plate 14 Driven side mounting part 15 Case board 20 Guide rail 30 Opening and closing body 31 Slats 32 Seat board 40 Winding shaft 41 Drive side shaft 42 Winding shaft side sprocket 43 Driven side shaft 52 Transmission member 60 Opening and Closing Machine 61 Connection plate 71 1st fireproof covering material 71a Fire-retardant material 72 Second fireproof covering material 72a Second fireproof coating on rear side 72b Lower side second fireproof covering part 72c 1st fireproof side 2nd fireproof covering part 73 Third fireproof covering material 74 No. 4 Fireproof Covering Material 75 No. 5 Fireproof Covering Material 76 Non-refractory cladding 77 No. 6 Fireproof Covering Material 80 Base material 81 Frame material 81a Containment Space 82 Driving side vertical frame member 83 Follower side vertical frame member 84 Intermediate vertical frame material 85 Upper floor horizontal frame 86 Ceiling side horizontal frame material 90 Base fixing device 91 Beam side fixing device 91a Head part 92 Reinforcement Fixtures 100 Suppression part 110 Reinforcement 111 1st reinforcement piece 112 Second reinforcement piece 113 Third reinforcement piece 120 Installation space M Maximum winding diameter

Claims

1. A fixing structure for fixing a bearing means for rotatably supporting a winding shaft for moving an opening / closing body that opens and closes an opening provided in a skeleton of a building to a wooden beam material located between a ceiling material and a wooden floor material among members that make up the skeleton, A first fire-resistant covering material constituting at least a portion of the ceiling material corresponding to the wooden beam and / or a portion thereof in the vicinity thereof; a second fire-resistant covering material covering at least the surface of the wooden beam to which the bearing means is fixed; a third fire-resistant covering material covering at least a portion of the underside of the wooden floor material corresponding to the bearing means and a portion in the vicinity thereof; The first fire-resistant covering material, the second fire-resistant covering material, and the third fire-resistant covering material are configured in a continuous manner, the bearing means is fixed to the wooden beam by a fastener inserted into the wooden beam so as to penetrate at least the second fire-resistant covering material; A fixing structure for the bearing means.

2. Among the components constituting the framework, a fourth fire-resistant covering material is provided between the wooden beam and another wooden beam that is different from the wooden beam and is provided so as to face the wooden beam at an interval; and and a fifth fire-resistant covering material constituting at least a portion of the ceiling material corresponding to the other wooden beams and a portion adjacent thereto, The first fire-resistant coating material, the second fire-resistant coating material, the third fire-resistant coating material, the fourth fire-resistant coating material, and the fifth fire-resistant coating material are configured in a continuous manner.

2. The fixing structure of the bearing means according to claim 1.

3. The fourth fire-resistant covering material is provided so as to cover the surface of the other wooden beam material facing the wooden beam material.

3. The fixing structure of the bearing means according to claim 2.

4. an installation space formed by bending the second fire-resistant covering material in a substantially folded shape, the installation space being for installing an accessory member used when fixing the bearing means to the wooden beam on the wooden beam; The fixing structure of the bearing means according to any one of claims 1 to 3.

5. A fixing structure for fixing a bearing means for rotatably supporting a winding shaft for moving an opening / closing body that opens and closes an opening provided in the skeleton of a building to a wooden beam material located between a ceiling material and a wooden floor material among members that make up the skeleton, A first fire-resistant covering material constituting at least a portion of the ceiling material corresponding to the wooden beam and / or a portion thereof in the vicinity thereof; a second fire-resistant covering material covering at least the surface of the wooden beam to which the bearing means is fixed; a third fire-resistant covering material covering at least a portion of the underside of the wooden floor material corresponding to the bearing means and a portion in the vicinity thereof; The first fire-resistant covering material, the second fire-resistant covering material, and the third fire-resistant covering material are configured in a continuous manner, fixing the bearing means to the wooden beams by fasteners inserted into the wooden beams so as to penetrate at least the second fire-resistant covering; a fourth fire-resistant covering material provided between the wooden beam and another wooden beam that is a different wooden beam from the members that constitute the framework and is provided so as to face the wooden beam at an interval, the fourth fire-resistant covering material being provided so as to cover the surface of the other wooden beam that faces the wooden beam; a fifth fire-resistant covering material constituting at least a portion of the ceiling material corresponding to the other wooden beams and a portion in the vicinity thereof, the fifth fire-resistant covering material being provided at an interval from the other wooden beams; By configuring the first fire-resistant covering material, the second fire-resistant covering material, the third fire-resistant covering material, the fourth fire-resistant covering material, and the fifth fire-resistant covering material in a continuous manner, it is possible to not cover beams other than the wooden beams and the other wooden beams among the beams provided in the skeleton with fire-resistant covering materials. A fixing structure for the bearing means.

6. A fixing structure for fixing a bearing means for rotatably supporting a winding shaft for moving an opening / closing body that opens and closes an opening provided in the skeleton of a building to a wooden beam material located between a ceiling material and a wooden floor material among members that make up the skeleton, A first fire-resistant covering material constituting at least a portion of the ceiling material corresponding to the wooden beam and / or a portion thereof in the vicinity thereof; a second fire-resistant covering material covering at least the surface of the wooden beam to which the bearing means is fixed; a third fire-resistant covering material covering at least a portion of the underside of the wooden floor material corresponding to the bearing means and a portion in the vicinity thereof; The first fire-resistant covering material, the second fire-resistant covering material, and the third fire-resistant covering material are configured in a continuous manner, fixing the bearing means to the wooden beams by fasteners inserted into the wooden beams so as to penetrate at least the second fire-resistant covering; Among the members constituting the skeleton, a fourth fire-resistant covering material is provided between the wooden beam and another wooden beam that is different from the wooden beam and is provided so as to face the wooden beam at a distance, and the fourth fire-resistant covering material is provided at a distance from each of the wooden beam and the other wooden beam; a fifth fire-resistant covering material constituting at least a portion of the ceiling material corresponding to the other wooden beams and a portion in the vicinity thereof, the fifth fire-resistant covering material being provided at an interval from the other wooden beams; By continuously configuring the first fire-resistant covering material, the second fire-resistant covering material, the third fire-resistant covering material, the fourth fire-resistant covering material, and the fifth fire-resistant covering material, it is possible to not cover beams other than the wooden beams among the beams provided in the skeleton with fire-resistant covering materials. A fixing structure for the bearing means.

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