Opening / closing mechanism

Abstract

To provide an opening / closing body capable of realizing a large-scale product having a flat opening / closing mechanism with a function as fire prevention equipment.SOLUTION: An opening / closing mechanism 1 opens / closes an opening formed in a wall that separates the indoor and the outdoor. The opening / closing mechanism 1 includes: multiple panel members 11A, 11B, and 11C arranged in the vertical direction to partially overlap each other; and guide members 12 for guiding movement in the vertical direction of each panel member. Each of front members constitutes a front face of each panel member on the outdoor side, with the front face formed in a plane shape having no ribs, and the front member is formed of a steel material.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to an opening and closing device that opens and closes an opening formed in a wall surface that separates an indoor space from an outdoor space. [Background technology]

[0002] 2. Description of the Related Art One form of opening and closing device for opening and closing an opening is one in which an opening / closing body slides up and down to open and close the opening, as typified by a shutter. One form of such an opening / closing body that slides up and down is an opening / closing device called an overhead door or an oversliding door, and Patent Documents 1 and 2 disclose techniques relating to such opening / closing devices. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2003-13674 A [Patent Document 2] JP 2020-66947 A Summary of the Invention [Problem to be solved by the invention]

[0004] Conventional shutters are basically made of steel and have ribs to give them strength as a surface material. In contrast, there are opening and closing devices with a flat front side to enhance design, such as the overhead door of Patent Document 1. The opening and closing body of such an opening and closing device is formed by connecting a plurality of flat front panel bodies to each other so that they can rotate, and each panel body is formed as an aluminum extrusion material. Aluminum extrusion materials have a high degree of freedom in molding, so they can be made to have excellent design, but since aluminum is a material that is relatively weak against heat (and therefore suitable for forming into an extrusion material), it is necessary to carry out a prescribed fire test in order to provide the function as a fire prevention facility (to receive certification). When manufacturing a large opening and closing device, if the size exceeds the limit of what can be done in a fire testing facility, it is not possible to conduct a fire test. Therefore, there is a problem that it is difficult to adopt a flat opening and closing body that functions as a fire prevention device for large opening and closing devices.

[0005] In view of the above, an object of the present invention is to provide an opening / closing body that can realize a large-sized product having a flat opening / closing body that also functions as a fire prevention device. [Means for solving the problem]

[0006] (Configuration 1) An opening and closing device for opening and closing an opening formed in a wall surface separating the indoors and the outdoors, comprising: a panel body arranged in a vertical direction so as to overlap with each other; and a guide member for guiding the vertical movement of the panel body, wherein the front surface member constituting the outdoor side of the panel body and formed in a flat shape without ribs is made of steel.

[0007] (Configuration 2) An opening and closing device as described in configuration 1, characterized in that either or both of the upper and lower end portions of the front member are provided with hinge connection portions formed at a position offset a predetermined distance toward the indoor side from the front face, and each of the panel bodies is rotatably connected to each other by hinge members attached to the hinge connection portions.

[0008] (Configuration 3) The opening and closing device according to configuration 2, wherein the upper end portion and the lower end portion of the front member are folded back to form a mutually interdigitating structure.

[0009] (Configuration 4) The opening and closing device according to configuration 3, characterized in that a transition portion from the front surface to a portion that becomes a convex portion in a side view as the hook structure is formed as an inclined surface.

[0010] (Configuration 5) An opening and closing device as described in any one of configurations 2 to 4, characterized in that a notch is formed in a portion of the surface on which the hinge connection portion is formed, in the longitudinal direction of the panel body, other than the portion that will become the hinge connection portion.

[0011] (Configuration 6) 6. An opening and closing device according to any one of configurations 1 to 5, further comprising a flatness maintaining member on the indoor side of the front surface for maintaining flatness of the front surface.

[0012] (Configuration 7) The opening and closing device according to configuration 6, further comprising a rear member that constitutes the indoor side rear surface of the panel body and that includes the flatness retaining member.

[0013] (Configuration 8) The opening and closing device described in configuration 7 is characterized in that either or both of the upper and lower end portions of the front member are provided with a hinge connection portion formed by folding back the steel material at a position offset a predetermined distance toward the interior from the front member, and a positioning member is formed on the inner side of the rear member that abuts against the hinge connection portion and positions the front member and the rear member relative to each other.

[0014] (Configuration 9) The opening and closing device according to configuration 7 or 8, characterized in that a long hole for inserting a fastening member for fastening the front member and the rear member is formed in each of the front member and the rear member, and the longitudinal direction of the long hole in the front member and the longitudinal direction of the long hole in the rear member are different directions.

[0015] (Configuration 10) 10. The opening and closing device according to any one of configurations 7 to 9, wherein the flat surface holding member and the rear surface member are integrally formed from an aluminum alloy.

[0016] (Configuration 11) 11. The opening and closing device according to any one of configurations 7 to 10, wherein the rear member is formed with a recess extending along the longitudinal direction and opening to the indoor side.

[0017] (Configuration 12) 12. The opening and closing device according to configuration 11, wherein a grip portion is formed protruding upward from a lower surface side of the recess.

[0018] (Configuration 13) 13. The opening and closing device according to configuration 11 or 12, further comprising a support member provided in a part of the recess between an upper surface and a lower surface of the recess for supporting a load in the vertical direction.

[0019] (Configuration 14) An opening and closing device as described in any of configurations 7 to 13, characterized in that on the indoor side of the panel body, each of the panel bodies is rotatably connected to each other by a hinge member, and the rear member is formed with a protrusion having an inclined surface or curved surface that protrudes most from the rear surface toward the indoor side of the hinge member.

[0020] (Configuration 15) An opening and closing device as described in configuration 14, characterized in that it comprises a hinge cover covering a mounting plate portion of the hinge member, the hinge cover having a surface that extends continuously from the inclined surface or curved surface to the point of the hinge member that protrudes most toward the indoor side.

[0021] (Configuration 16) 16. The opening and closing device according to any one of configurations 6 to 15, wherein the flatness retaining member and the front surface are bonded together.

[0022] (Configuration 17) An opening and closing device as described in any of configurations 1 to 16, comprising: a hinge member for connecting each of the panel bodies to each other in a rotatable manner, the hinge member having an axle tube that serves as the axis of the hinge and two mounting plates journalled by the axle tube; a roller provided at both longitudinal ends of the panel body and running along the guide member, the roller being rotatably attached to an axle inserted into the axle tube of the hinge member attached to both longitudinal ends of the panel body; a guide member cover that covers the guide member and the end of the panel body; and a cover member that closes a gap portion defined by the guide member cover, the rear surface of the panel body, and the hinge member.

[0023] (Configuration 18) An opening and closing device as described in any of configurations 1 to 17, characterized in that it comprises a hinge member for connecting each of the panel bodies to each other so that they can rotate, the hinge member having an axle tube that serves as the axis of the hinge and two mounting plates supported by the axle tube, and a hinge cover that covers the mounting plate portion of the hinge member, the hinge cover being attached to the hinge member by having an attachment portion that is inserted into the axle tube.

[0024] (Configuration 19) The opening and closing device described in configuration 18, characterized in that the hinge covers are a pair of upper and lower members, one of which is attached by inserting the mounting portion from one side of the shaft tube, and the other of which is attached by inserting the mounting portion from the other side of the shaft tube.

[0025] (Configuration 20) An opening and closing device as described in any one of configurations 17 to 19, characterized in that each of the two mounting plates has a long hole for inserting a fastening member, and the longitudinal direction of the long hole formed in one of the mounting plates is different from the longitudinal direction of the long hole formed in the other mounting plate.

[0026] (Configuration 21) An opening and closing device as described in any of configurations 1 to 20, comprising a locking mechanism that limits the upward and downward movement of the panel body, an operating unit for unlocking the locking mechanism, a hole portion formed in the panel body for pulling out the operating unit to the outside, a release key that releases and locks the pulling out of the operating unit from the hole portion, and a release key mounting portion for mounting the release key to the panel body, wherein the release key mounting portion is formed as a handle portion for moving the panel body in the upward and downward directions.

[0027] (Configuration 22) 22. The opening and closing device according to any one of configurations 1 to 21, wherein the front member is formed of a steel material having a thickness of 0.8 mm or more. Effect of the Invention

[0028] According to the opening and closing device of the present invention, it is possible to realize a large-sized product having a flat opening and closing body that is provided with a function as a fire prevention facility. [Brief description of the drawings]

[0029] [Figure 1] FIG. 1 is a side view showing an opening and closing device according to a first embodiment of the present invention. [Diagram 2] FIG. 1 is a diagram showing an upper panel body constituting an opening / closing body of an opening / closing device according to a first embodiment; [Diagram 3] FIG. 1 is a diagram showing a front member of an upper panel body of an opening and closing device according to the first embodiment; [Figure 4] FIG. 1 is a diagram showing a rear member of an upper panel body of an opening / closing device according to the first embodiment; [Diagram 5] FIG. 1 is a diagram showing an intermediate panel body constituting an opening / closing body of an opening / closing device according to a first embodiment; [Figure 6] FIG. 1 is a diagram showing a front member of an intermediate panel body of the opening and closing device of the first embodiment. [Figure 7] FIG. 1 is a diagram showing a rear member of an intermediate panel body of an opening / closing device according to the first embodiment; [Figure 8] FIG. 1 is a diagram showing a lower panel body constituting an opening / closing body of an opening / closing device according to a first embodiment; [Figure 9] FIG. 1 is a diagram showing a front member of a lower panel body of an opening and closing device according to the first embodiment; [Figure 10] FIG. 1 is a diagram showing a rear member of a lower panel body of an opening / closing device according to the first embodiment; [Figure 11] FIG. 1 is a diagram showing a support member provided in a lower panel body of the opening and closing device of the first embodiment. [Figure 12] FIG. 1 is a diagram showing a hinge member that rotatably connects the panels of the opening and closing device of the first embodiment. [Figure 13] FIG. 1 is a diagram showing a roller portion provided on an upper panel body of the opening and closing device of the first embodiment. [Figure 14] FIG. 1 is a diagram showing a roller portion provided on an intermediate panel body of the opening and closing device of the first embodiment. [Figure 15] FIG. 1 is a diagram showing a roller portion provided on a lower panel body of the opening and closing device of the first embodiment. [Figure 16] FIG. 1 is a diagram showing a hinge cover provided on the hinge member of the first embodiment; [Figure 17] FIG. 1 is a diagram showing a state in which the hinge cover of the first embodiment is attached to the hinge member; [Figure 18] FIG. 1 is a diagram showing a counter unit for counting the number of opening and closing operations provided in the opening and closing device of the first embodiment; [Figure 19] FIG. 1 is a diagram showing a detected member provided in the opening and closing device of the first embodiment; [Figure 20] FIG. 1 is a diagram showing an attached state of the counter part of the first embodiment. [Figure 21] FIG. 1 is a diagram showing an entire opening / closing body of an opening / closing device according to a first embodiment; [Figure 22] FIG. 1 is a diagram showing an entire opening / closing body of an opening / closing device according to a first embodiment; [Figure 23] FIG. 1 is a plan view showing a side portion of an opening and closing device according to a first embodiment; [Figure 24]FIG. 1 is a diagram showing a rail member which is a guide member of the opening and closing device of the first embodiment. [Diagram 25] FIG. 1 is a diagram showing a state in which a holder member (rail holder) is attached to a guide member (rail member) of the opening and closing device of the first embodiment. [Figure 26] FIG. 1 is a diagram showing a vertical rail fixing frame for mounting a guide member (rail member) of the opening and closing device of the first embodiment. [Figure 27] FIG. 1 is a diagram showing a guide member cover of the opening and closing device of the first embodiment. [Figure 28] FIG. 1 is a diagram showing a detection sensor mounting member of an opening / closing device according to the first embodiment; [Figure 29] FIG. 1 is a diagram showing a first convex member of an opening and closing device according to the first embodiment; [Diagram 30] FIG. 1 is a diagram showing a second convex member of the opening and closing device of the first embodiment; [Diagram 31] FIG. 1 is a diagram showing the upper portion of the opening and closing device according to the first embodiment; [Diagram 32] FIG. 1 is a diagram showing an opening key of an opening / closing device according to the first embodiment; [Diagram 33] FIG. 1 is a diagram showing an opening key of an opening / closing device according to the first embodiment; [Diagram 34] FIG. 13 is a diagram showing an upper panel body of an opening and closing device according to a second embodiment. [Diagram 35] FIG. 13 is a diagram showing an upper panel body of an opening and closing device according to a second embodiment. [Diagram 36] FIG. 13 is a diagram showing an upper panel body of an opening and closing device according to a second embodiment. [Figure 37] FIG. 13 is a diagram showing an intermediate panel body of an opening and closing device according to a second embodiment. [Figure 38] FIG. 13 is a diagram showing an intermediate panel body of an opening and closing device according to a second embodiment. [Figure 39] FIG. 13 is a diagram showing an intermediate panel body of an opening and closing device according to a second embodiment. [Diagram 40] FIG. 13 is a diagram showing a lower panel body of an opening and closing device according to a second embodiment. [Diagram 41] FIG. 13 is a diagram showing a lower panel body of an opening and closing device according to a second embodiment. [Diagram 42] FIG. 13 is a diagram showing a lower panel body of an opening and closing device according to a second embodiment. [Diagram 43] FIG. 13 is a diagram showing another example of an intermediate panel body; [Diagram 44]FIG. 13 is a diagram showing another example of a front member of the intermediate panel body; [Diagram 45] A diagram showing an example of an aluminum panel with a steel plate. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0030] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. Note that the following embodiment is one form for embodying the present invention, and is not intended to limit the scope of the present invention.

[0031] <Embodiment 1> FIG. 1 is a side view showing an opening and closing device according to a first embodiment of the present invention. The opening and closing device 1 of this embodiment is an opening and closing device that opens and closes an opening formed in a wall surface that separates the indoors and outdoors, and more specifically, is an opening and closing device called an overhead door or an over-sliding door.

[0032] The opening and closing device 1 has the following general configuration: An opening / closing body 11 in which a plurality of panel bodies are rotatably connected to each other; A guide member for guiding the movement of the opening / closing body 11 and a side structure portion 13 for installing the guide member; an opening / closing drive unit 14 including a drive device and its mechanism for driving the opening / closing of the opening / closing body 11, and a control device for controlling the opening / closing operation; Equipped with.

[0033] The opening / closing body 11 is configured by an upper panel body 11A, one or more intermediate panel bodies 11B, and a lower panel body 11C, which are rotatably connected to each other (connected by hinges in this embodiment). A plurality of each panel body is arranged in the vertical direction, and is arranged so as to overlap with each other partially. The configuration of each panel body and the configuration of the hinge will be described in detail later.

[0034] In this embodiment, a guide member for guiding the vertical movement of the opening / closing body 11 is constituted by a guide rail 12. The guide rail 12 has vertical rail portions erected on both sides of the opening, a horizontal rail portion provided near the ceiling so as to follow the ceiling, and a curved rail portion connecting the two. The holder members that cover the sides of the vertical rail portions of the guide rails 12, the guide member covers that cover the longitudinal ends of the guide rails 12 and the panel body, and the installation structures thereof will be described in detail later.

[0035] Any drive device and its mechanism for driving the opening and closing of the opening / closing body 11, a control device for controlling the opening and closing operation, etc. can be used. Here, an example is shown that includes a drive main body 141 that houses a motor as a drive unit and a control unit that controls the motor, a power transmission rail 142 that has a toothed belt disposed therein and transmits power, and a winding unit 143 that houses a winding drum that winds up the opening / closing body 11 by the transmitted power. The wire that is wound up by the winding drum is fastened to both sides near the lower end of the opening / closing body 11 (lower panel body 11C). In the opening operation, as the wire is wound up by the winding drum, the opening / closing body 11 is lifted and moves upward along the guide rail 12, and is finally moved to a position near the ceiling and approximately parallel to the ceiling. The closing operation is the reverse operation. The opening / closing device 1 of this embodiment includes a trolley arm 144 as a mechanism for locking the movement (i.e., opening and closing) of the opening / closing body 11. One end of the trolley arm 144 is rotatably attached to the opening / closing body (upper panel body 11A), and the other end is configured to be movable along the power transmission rail 142 and to receive power for opening and closing. With this configuration, the movement of the opening / closing body 11 can be locked by locking the trolley arm 144 so that it does not move. The locking and unlocking are performed by the drive main body 141, but an operation unit 145 for unlocking is provided so that the lock can be manually released in the event of a power outage or the like. By pulling the operation unit 145, the connection with the power at the other end of the trolley arm 144 is released, allowing it to move freely. In addition, since any conventional mechanisms can be used for the drive device and mechanism for driving the opening and closing of the opening and closing body, the control device for controlling the opening and closing operation, the opening and closing lock mechanism and its release mechanism, etc., further detailed explanation will be omitted here.

[0036] (Upper panel body) FIG. 2 shows the upper panel body 11A of this embodiment, where FIG. 2(a) is a side view and FIG. 2(b) is a rear view (part of the panel body 11A is omitted in the width direction because the panel body 11A is a member that is long in the width direction). In the following description, the outdoor side of the opening and closing device 1 in its installed state will be referred to as the front side or front face, and the indoor side as the rear side or back face. In addition, the upper side of the opening and closing device 1 in its installed state will be referred to as the top, the lower side as the bottom or bottom, and the longitudinal direction of the panel body will be referred to as the width direction. The upper panel body 11A comprises a front member 11A1 which forms the front surface facing the outdoor side of the panel body and which is formed flat (without ribs), a flatness retaining member 11A3 for maintaining the flatness of the front surface, and a rear member 11A2 which forms the rear surface facing the indoor side of the panel body and is equipped with the flatness retaining member 11A3. The upper panel body 11A is a panel body located at the uppermost side of the opening / closing body 11, and is provided on its upper part with a first protruding member 181. The first protruding member 181 will be described later.

[0037] FIG. 3 shows the front member 11A1 of this embodiment, where FIG. 3(a) is a side view and FIG. 3(b) is a rear view (part of the front member 11A1 is omitted in the width direction because the member is long in the width direction). The front member 11A1 is formed by bending a plate of carbon steel (also called steel) or stainless steel (hereinafter referred to as "steel material") having a thickness of 0.8 mm or more. The upper end side of the front member 11A1 is bent at a substantially right angle from the front surface 11A11 to the rear surface side to form an upper surface 11A15, and is bent at a substantially right angle from the upper surface 11A15 downward to form an upper folded portion 11A16. As shown in FIG. 3(b), a hole 11A1H2 for attaching a member for connecting the trolley arm 144 is formed in the vicinity of the substantially center in the width direction of the upper folded portion 11A16. At the lower end side of the front member 11A1, a grooved protrusion 11A13 and a grooved recess 11A14 are formed by bending the steel plate. The grooved protrusion 11A13 and the grooved recess 11A14 form a grooved structure between the upper end of the intermediate panel body described later. The rear side of the grooved recess 11A14 is folded upward at a substantially right angle to form a lower folded portion, and the hinge connection portion 11A12 for connecting the hinge member is formed at this lower folded portion. With the above configuration, the hinge connection portion 11A12 is formed at a position offset from the front face 11A11 by a predetermined distance toward the indoor side. Each hinge connection portion 11A12 is formed with two holes 11A1H1 (long holes) for inserting fastening members (nut rivets) PN (one hinge connection portion is a set of two holes). As shown in Fig. 3(b), a plurality of hinge connection portions 11A12 are provided at predetermined intervals in the width direction of the front member 11A1 (five in this embodiment, i.e., connected by five hinge members). The long holes 11A1H1 are formed with their long axes aligned in the vertical direction. In the lower folded portion (the surface on which the hinge connection portions are formed) on which the hinge connection portions 11A12 are formed, a notch 11A17 is formed in a portion between each of the hinge connection portions 11A12. In other words, "a notch is formed in a portion other than the portion that becomes the hinge connection portion in the longitudinal direction of the panel body." The notch reduces the weight of the panel body. Note that a notch may be formed in the upper folded portion 11A16 for the same purpose of reducing the weight.

[0038] FIG. 4 shows the rear member 11A2 and the flat surface retaining member 11A3, where FIG. 4(a) is a side view and FIG. 4(b) is a rear view (part of the member is omitted in the width direction because it is a member that is long in the width direction). The flatness maintaining member 11A3 is a member that is joined to the front surface 11A11 in order to maintain the flatness of the front surface 11A11. The rear member 11A2 is joined to the front member 11A1 to form a hollow panel body. In this embodiment, the rear surface member 11A2 and the flat surface retaining member 11A3 are integrally formed (by extrusion) from an aluminum alloy.

[0039] The planar holding member 11A3 is formed extending from the rear member 11A2 to the front side, and has a flat portion bent at a substantially right angle at its tip and formed parallel to the front surface 11A11. The flat portion at the tip is joined to the indoor side of the front surface 11A11 (see FIG. 2(a)). In this embodiment, two planar holding members 11A3 are formed, and the upper planar holding member 11A3 is joined to the front surface 11A11 by bonding and then riveting, and the lower planar holding member 11A3 is joined to the front surface 11A11 by bonding. Note that although riveting or bonding is used as an example here (any method of either bonding or riveting or a combination of both may be used), the bonding between the planar holding member 11A3 and the front surface 11A11 may be any bonding method that can obtain the required strength. In this embodiment, the example in which two flatness maintaining members 11A3 are formed is shown, but one or three or more may be formed. In addition, in this embodiment, the flat surface retaining member 11A3 is formed across almost the entire width of the panel body, but the present invention is not limited to this, and for example, the flat surface retaining members may be provided at predetermined intervals in the width direction.

[0040] The rear member 11A2 is configured to connect the upper and lower parts of the front member 11A1, thereby forming a hollow panel body. As shown in Fig. 4(a), the rear member 11A2 is basically a flat member, and has an upper surface portion bent at a substantially right angle toward the front side at its upper end. As shown in Fig. 2(a), the upper surface portion abuts against the outer side of the upper portion of the front member 11A1, and also functions as a positioning member when assembling the rear member 11A2 to the front member 11A1. That is, the upper surface portion of the rear member 11A2 can be hooked onto the front member 11A1 to position them, which provides excellent workability. As shown in FIG. 4(b), holes 11A2H3 are formed at both ends in the width direction of the rear member 11A2, through which fastening members (nut rivets) PN for attaching roller attachment members 11A4 (see FIG. 13) are inserted. In this embodiment, as will be described later, the hinge members are structured to hold the rollers, but since the upper panel body only has hinge members on the lower end side, a roller attachment member 11A4, which is a separate member for attaching the rollers, is used. As shown in FIG. 4(a) and (b), recesses 11A25 are formed at the positions where the holes 11A2H3 are formed. The recesses 11A25 are relief portions for preventing the head portion of the nut rivet PN from protruding. A hole 11A2H2 is formed in approximately the center of the upper end side of the rear member 11A2 so as to communicate with the hole 11A1H2 of the front member 11A1. A hole 11A2H1 is formed on the lower end side of the rear member 11A2 so as to face the hinge connection portion 11A12 of the front member 11A1 and communicate with the hole 11A1H1 of the front member 11A1. The hole 11A2H1, which is an elongated hole, is formed so that its long axis is in the width direction, and therefore, is formed so that its long axis is approximately perpendicular to the hole 11A1H1 of the front member 11A1. A recess 11A22 is formed at the position where the hole 11A2H1 is formed. The recess 11A22 is a clearance portion to prevent the head portion of the nut rivet PN from protruding. A protrusion 11A24 having approximately the same height as the depth of the recess 11A22 is formed on the front side near the lower end of the rear member 11A2. The protrusion 11A24 contacts the front member 11A1 together with the front side of the recess 11A22 (see FIG. 2(a)) and functions as a leg portion that supports the load received from the hinge member. A protrusion 11A21 that protrudes toward the indoor side is formed in a portion adjacent to the recess 11A22 when the hinge member is attached. As will be described later, this protrusion 11A21 has a curved surface on the slope toward its apex that protrudes most toward the portion of the hinge member that protrudes toward the indoor side. The protrusion 11A21 is also provided near the upper end of the rear member 11A2. These two protrusions 11A21 are provided across the width of the rear member 11A2, and become grounding legs when the rear member 11A2 is placed with its back side facing down. As described above, the rear member 11A2 is formed by extrusion molding, but when a member with a shape like the rear member 11A2 is formed as an extrusion material, the member tends to be drawn toward the side where the flat surface holding member 11A3 is located. That is, in FIG. 4(a), the upper end side and the lower end side tend to be warped to the left. In order to suppress such a tendency, it is preferable to perform molding with the back side of the rear member 11A2 facing down. In this case, the presence of the two protrusions 11A21 that become grounding legs reduces scratches on the back surface of the rear member 11A2 when the rear member 11A2 is placed with its back side facing down.

[0041] The rear surface member 11A2, which is integrally formed with the planar holding member 11A3, is attached to the front surface member 11A1 configured as above by riveting the rear surface member 11A2 that contacts the upper folded portion of the front surface member 11A1, fastening with a nut rivet PN, and fastening with a nut rivet PN inserted through a hole 11A1H1 in the front surface member 11A1 and a hole 11A2H1 in the rear surface member 11A2. In addition, the upper planar holding member 11A3 and the front surface 11A11 are riveted, and the lower planar holding member 11A3 and the front surface 11A11 are bonded. This forms a hollow upper panel body 11A, and the front surface 11A11 is held therein by the flat surface holding member 11A3. In mounting the rear member 11A2 to the front member 11A1, as described above, the upper surface of the rear member 11A2 can be hooked to position the two members, resulting in excellent workability. In addition, the holes 11A1H1 and 11A2H1 for inserting the fastening members (nut rivets PN) formed in the front member 11A1 and the rear member 11A2, respectively, are provided so that the longitudinal directions of the elongated holes are approximately perpendicular to each other, so that the relative positions of the front member 11A1 and the rear member 11A2 can be adjusted up, down, left, and right by the clearance generated by the elongated holes. The rear member 11A2 can be formed with high accuracy because it is an extrusion material, but the front member 11A1 is formed by bending a steel plate, so it is difficult to obtain high accuracy. The error between the parts generated by this can be absorbed by the configuration of the holes 11A1H1 and 11A2H1. In addition, if the longitudinal directions of the two long holes are configured to be approximately perpendicular to each other, the above-mentioned effect is maximized and is preferable, but it is not limited to being approximately perpendicular, and a certain effect can be obtained by making the longitudinal directions of the two different directions. In this embodiment, the longitudinal direction of the long hole is the up-down direction on the front member 11A1 side and the width direction on the rear member 11A2 side, but the relationship may be reversed.

[0042] (Middle panel body) FIG. 5 shows an intermediate panel body 11B of this embodiment, where FIG. 5(a) is a side view, FIG. 5(b) is a cross-sectional view along line BB in FIG. 5(c), and FIG. 5(c) is a rear view (part of the intermediate panel body 11B is omitted in the width direction because the intermediate panel body 11B is a member that is long in the width direction). The intermediate panel body 11B comprises a front member 11B1 which forms the front surface facing the outdoor side of the panel body and which is formed flat (without ribs), a flat surface retaining member 11B3 for maintaining the flatness of the front surface, a rear member 11B2 which forms the rear surface facing the indoor side of the panel body and is equipped with the flat surface retaining member 11B3, and a cover member 161 for preventing fingers from getting caught in the gap. The intermediate panel body 11B is a panel body provided in plurality between the upper panel body 11A and the lower panel body 11C. The basic concept of the intermediate panel body 11B is similar to that of the upper panel body 11A described above, but differs in that it is configured so that it can be rotatably connected to other panel bodies by hinge members at both the top and bottom ends.

[0043] FIG. 6 shows the front member 11B1, where FIG. 6(a) is a cross-sectional view taken along line AA in FIG. 6(c), FIG. 6(b) is a side view, and FIG. 6(c) is a rear view (part of the front member 11B1 is omitted in the width direction because the member is long in the width direction). The front member 11B1 is formed by bending a steel material having a thickness of 0.8 mm or more. The lower end side of the front surface member 11B1 has the same configuration as the lower end side of the front surface member 11A1 of the upper panel body 11A, so a description thereof will be omitted here. The upper end side of the front member 11B1 is formed with a dowel convex portion 11B13 and a dowel concave portion 11B14 by bending a steel plate so as to form a dowel structure with the lower end side of the upper panel body 11A or another intermediate panel body 11B. In other words, the positional relationship of the dowel convex portion and the dowel concave portion is reversed with respect to the lower end side. The structure of the upper end side of the front member 11B1 is the same as that of the lower end side (upside down) except for the difference based on the dowel structure, and has a hinge connection portion 11B12 offset a predetermined distance from the front face 11B11 toward the interior side and a notch 11B17 formed in the portion between each hinge connection portion 11B12.

[0044] FIG. 7 shows the rear member 11B2 and the flat surface holding member 11B3, where FIG. 7(a) is a view showing both end portions on the front side, FIG. 7(b) is a side view, and FIG. 7(c) is a rear view (part of the member is omitted in the width direction because it is a member that is long in the width direction). Similar to the upper panel body 11A, the rear member 11B2 and the flat surface retaining member 11B3 are integrally formed (by extrusion) from an aluminum alloy. The flatness retaining member 11B3 is similar to the flatness retaining member 11A3 of the upper panel body 11A, and a description thereof will be omitted here.

[0045] The configuration of the lower end side of the rear member 11B2 is similar to that of the rear member 11A2 of the upper panel body 11A, and includes a hole 11B2H1 which is an elongated hole, a recess 11B22 which is a relief portion, a protrusion 11B24, and a protrusion 11B21. Each of these components is conceptually similar to the respective components of the rear member 11A2 of the upper panel body 11A, so a description thereof will be omitted here. A positioning member 11B23 is formed on the upper end side of the rear member 11B2, which abuts against the upper hinge connection portion 11B12 of the front member 11B1 and determines the relative positions of the front member 11B1 and the rear member 11B2. When attaching the rear member 11B2 to the front member 11B1, the positioning member 11B23 can be abutted against the upper hinge connection portion 11B12 to determine the positions of both members, resulting in excellent workability. The other configurations on the upper end side of the rear member 11B2 are the same as the configurations on the lower end side, except that they are turned upside down. In addition, in the intermediate panel body 11B, hinge members are attached to the indoor sides of the upper and lower parts and the rollers are held by the hinge members, so there is no need for a member equivalent to the roller mounting member 11A4 attached to the upper panel body 11A, and therefore the hole 11A2H3 that was formed in the rear member 11A2 of the upper panel body 11A for mounting this, and the associated recess 11A25 as a relief portion, are not formed either.

[0046] The cover member 161 is a member that closes the gap portion defined (defined) by the guide member cover described later, the rear surface of the panel body, and the hinge member, and is intended to prevent fingers from getting caught in the gap portion. As shown in FIG. 5, the cover members 161 are provided at both end portions of the intermediate panel body 11B (pivotally fixed to the rear member 11B2) and are formed at approximately the same height as the protruding height of the hinge members 15 toward the indoor side (slightly higher than the height of the hinge members 15).

[0047] The rear surface member 11B2, which is integrally formed with the planar holding member 11B3, is attached to the front surface member 11B1 configured as above by fastening with a nut rivet PN inserted through a hole 11B1H1 of the front surface member 11B1 and a hole 11B2H1 of the rear surface member 11B2. In addition, the upper planar holding member 11B3 and the front surface 11B11 are riveted, and the lower planar holding member 11B3 and the front surface 11B11 are bonded. This forms a hollow intermediate panel body 11B, within which the front surface 11B11 is held by the flat surface holding member 11B3. As explained above, the presence of positioning member 11B23 improves the ease of assembly, and the configuration of holes 11B1H1 and 11B2H1 for inserting fastening members (nut rivets PN) allows the relative positions of front member 11B1 and rear member 11B2 to be adjusted up, down, left, and right. As shown in FIG. 5(b), the hinge member 15 is attached by screwing a screw SC into a nut rivet PN (although FIG. 5(b) shows only the upper side, the hinge member 15 is also attached to the lower side).

[0048] (Lower panel body) FIG. 8 shows the lower panel body 11C of this embodiment, where FIG. 8(a) is a cross-sectional view, FIG. 8(b) is a side view, and FIG. 8(c) is a rear view (part of the panel body 11C is omitted in the width direction because the panel body 11C is a member that is long in the width direction). The lower panel body 11C comprises a front member 11C1 which forms the front surface facing the outdoor side of the panel body and is formed flat (without ribs), a flat surface retaining member 11C3 for maintaining the flatness of the front surface, a rear member 11C2 which forms the rear surface facing the indoor side of the panel body and is equipped with the flat surface retaining member 11C3, and a cover member 162 for preventing fingers from getting caught in the gap. The lower panel body 11C is the panel body located at the lowest side of the opening / closing body 11, and its basic concept is similar to the upper panel body 11A and the intermediate panel body 11B described above. It differs in that it is provided with a grounding body on the lower end side and that a recess for a handle is formed.

[0049] FIG. 9 shows the front member 11C1, where FIG. 9(a) is a side view and FIG. 9(b) is a rear view (part of the front member 11C1 is omitted in the width direction because the member is long in the width direction). The front member 11C1 is formed by bending a steel material having a thickness of 0.8 mm or more. The upper end side of the front surface member 11C1 has the same configuration as the upper end side of the front surface member 11B1 of the intermediate panel body 11B, and therefore a description thereof will be omitted here. The lower end side of the front member 11C1 is bent at a substantially right angle from the front surface 11C11 to the rear surface side to form a lower surface 11C15, and is further bent in a crank shape to form a rear surface member attachment portion 11C16 for attaching a rear surface member.

[0050] FIG. 10 shows the rear member 11C2 and the flat surface retaining member 11C3, where FIG. 10(a) is a side view and FIG. 10(b) is a rear view (part of the member is omitted in the width direction because it is a member that is long in the width direction). The rear member 11C2 and the flatness maintaining member 11C3 are integrally formed (by extrusion) from an aluminum alloy. The flatness retaining member 11C3 is formed in a rectangular shape in cross section, but is conceptually similar to the flatness retaining member 11A3 of the upper panel body 11A and the flatness retaining member 11B3 of the intermediate panel body 11B.

[0051] The structure of the upper end side of the rear member 11C2 is conceptually similar to the structure of the lower end side of the rear member 11A2 of the upper panel body 11A turned upside down, and is formed with a hole 11C2H1 which is an elongated hole, a recess 11C22 which is a relief portion, a protrusion 11C24, and a projection 11C21. Since each of these structures is conceptually similar to the respective structures of the rear member 11A2 of the upper panel body 11A, a description thereof will be omitted here. An opening 11C29 is formed at the lower end of the rear member 11C2 for attaching a grounding member 11C5 (see FIG. 8) made of an elastic material such as rubber. A front member attachment portion 11C28 is formed in opposition to the rear member attachment portion 11C16 of the front member 11C1 in order to attach the front member 11C1. A positioning member 11C23 is formed near the front member attachment portion 11C28, which abuts against the rear member attachment portion 11C16 of the front member 11C1 and positions the front member 11C1 and the rear member 11C2 relative to each other. When attaching the rear member 11C2 to the front member 11C1, the positioning of both can be determined by abutting the positioning member 11C23 against the rear member attachment portion 11C16, resulting in excellent workability. A bearing portion 11C27, which is a recess for receiving the roller shaft, is formed on the lower end side of the rear member 11C2. Because there is no hinge member for holding the roller on the lower end side of the rear member 11C2, a separate structure for holding the roller is provided. The rear member 11C2 is formed with a recess 11C25 extending along the longitudinal direction thereof and opening to the indoor side. Also, a handhold portion 11C26 is formed protruding upward from the lower surface side of the recess 11C25. The recess 11C25 functions as a handle when opening and closing the opening-closing body 11 by hand, mainly when the lower panel body 11C is in a vertical state. The handhold 11C26 functions as a handle when closing the opening-closing body 11 by hand, mainly when the lower panel body 11C is in a horizontal state (i.e., when the opening-closing body 11 is opened and moved near the ceiling). The presence of the handhold 11C26 provides a good grip with the fingers and makes it easy to apply force even when the lower panel body 11C is in a horizontal state. A support member 11C4 is attached to the recess 11C25 at a position substantially at the center in the width direction thereof, between the upper and lower surfaces of the recess, for supporting a load in the vertical direction (see FIG. 8(c)).

[0052] 11A and 11B are diagrams showing a support member 11C4, where FIG. 11A is a perspective view and FIG. 11B is an enlarged view of region B in FIG. 8C. As shown in Fig. 11, the support member 11C4 is a generally U-shaped member when viewed from above (or from below, hereinafter referred to as "planar view"), with a folded portion formed at the end of the opening side of the U-shape, and an attachment hole formed in the folded portion. As shown in Fig. 8(c), the support member 11C4 is disposed at a position that is generally the center in the width direction of the recess 11C25, and is attached to the rear member 11C2 by riveting or the like.

[0053] The cover member 162, like the cover member 161 of the intermediate panel body 11B, is a member that closes the gap portion defined (defined) by the guide member cover described later, the rear surface of the panel body, and the hinge member, and is intended to prevent fingers from getting caught in the gap portion. As shown in FIG. 8, the cover members 162 are provided at both end portions of the lower panel body 11C, and are formed to approximately the same height as the height of the hinge members 15 protruding toward the indoor side (slightly higher than the height of the hinge members 15). As shown in FIG. 8(b), the cover member 162 has a side portion that covers the side of the lower panel body 11C, and further has a folded portion that wraps around to the front side of the lower panel body 11C, and is configured to sandwich the side end portion of the lower panel body 11C.

[0054] The rear member 11C2, which is integrally formed with the flat surface holding member 11C3, is attached to the front member 11C1 configured as above by screwing the rear member attachment portion 11C16 and the front member attachment portion 11C28 together and fastening them with a nut rivet PN inserted through the hole 11C1H1 of the front member 11C1 and the hole 11C2H1 of the rear member 11C2. The flat surface holding member 11C3 and the front surface 11C11 are also bonded together. This forms a hollow lower panel body 11C, inside which the front surface 11C11 is held by the flat surface holding member 11C3. As explained above, the presence of positioning member 11C23 improves the ease of assembly, and the configuration of holes 11C1H1 and 11C2H1 for inserting fastening members (nut rivets PN) allows the relative positions of front member 11C1 and rear member 11C2 to be adjusted up, down, left, and right.

[0055] (hinge member) FIG. 12 shows the hinge member, where FIG. 12(a) is a side view and FIG. 12(b) is a rear view. The hinge member 15 is a hinge for connecting the panel bodies to each other so that they can rotate, and has a shaft cylinder 153 that serves as a hinge shaft, and two mounting plates 151 and 152 that are supported by the shaft cylinder 153. Each of the two mounting plates 151, 152 is formed with an elongated hole for inserting a fastening member (nut rivet PN), and the longitudinal direction of the elongated hole formed in one mounting plate is different from the longitudinal direction of the elongated hole formed in the other mounting plate. In this embodiment, the relative angle between the two is formed to be approximately a right angle. This makes it possible to fine-tune the position when mounting the hinge member 15, and to absorb errors between the parts. The shaft cylinder 153 is a hollow member, so that the shaft of the roller can be inserted and held therein.

[0056] FIG. 13 is a diagram showing a mounting structure for rollers, which are guided members, in the upper panel body 11A. As described above, the nut rivets PN are fastened to the holes 11A2H3 formed near both ends of the rear member 11A2 of the upper panel body 11A, and the roller attachment members 11A4 are screwed to the nut rivets PN. The roller attachment members 11A4 are members that axially support the rollers Wh so that the rollers Wh are rotatably supported at the ends of the upper panel body 11A. Further, among the hinge members 15 connecting the upper panel body 11A and the intermediate panel body 11B, the hinge members 15 attached to both end portions of the panel bodies 11A and 11B rotatably support the rollers Wh that run along the guide members 12. As described above, the shaft portions 155 of the rollers Wh are inserted and held in the shaft cylinders 153 of the hinge members 15.

[0057] FIG. 14 is a diagram showing a roller mounting structure in the intermediate panel body 11B. Of the hinge members 15 that connect the intermediate panel bodies 11B to each other, the hinge members 15 attached to both end portions of the panel bodies support rollers Wh that run along the guide members 12 in a rotatable manner.

[0058] FIG. 15 is a diagram showing a roller mounting structure in the lower panel body 11C. Of the hinge members 15 that connect the lower panel body 11C and the intermediate panel body 11B, the rollers Wh that run along the guide members 12 are rotatably supported in the hinge members 15 attached to both end portions of the panel bodies. Also, nut rivets PN are fastened (see FIG. 8) into holes 11C2H2 (see FIG. 10(b)) formed near both ends of the rear member 11C2 of the lower panel body 11C, and the roller axle mounting member 11C6 is screwed in using the nut rivets PN. The roller axle mounting member 11C6 is a member for mounting the roller axle to the bearing portion 11C27 of the rear member 11C2, and thereby the roller Wh is rotatably supported at the end of the lower panel body 11C.

[0059] (hinge cover) FIG. 16 shows a hinge cover, with FIGS. 16(a) and (b) being perspective views and FIG. 16(c) being a top view. The hinge cover 154 is a cover that covers the mounting plate portion of the hinge member 15 , and includes a cover portion 1541 , a mounting portion 1542 , and an engagement portion 1543 . The cover portion 1541 is a member that covers the mounting plate portion of the hinge member 15, and as shown in Figure 17(b), has a surface that extends continuously from the inclined surfaces of the protrusions 11A21, 11B21, and 11C21 formed on the rear members 11A2, 11B2, and 11C2 of each panel body to the point of the hinge member 15 that protrudes most toward the indoor side. The mounting portion 1542 is a member that is inserted into the shaft tube 153 of the hinge member 15, and the formation of the slits allows the outer diameter of the mounting portion 1542 to be elastically reduced. This allows an engagement force to be obtained when the mounting portion 1542 is inserted into the shaft tube 153. The engaging portion 1543 is a hook member that engages with the mounting plates 151 and 152 of the hinge member 15 .

[0060] FIG. 17 shows a state in which the hinge cover is attached, with FIG. 17(a) being a perspective view and FIG. 17(b) being a side view. As can be seen from Figure 17, the hinge covers 154 are a pair of upper and lower components, and are attached by inserting the mounting portion 1542 of one hinge cover from one side of the shaft tube 153, and the mounting portion 1542 of the other hinge cover is attached by inserting it from the other side of the shaft tube 153. Furthermore, by rotating the hinge cover 154 so as to press it against the mounting plates 151, 152 of the hinge member 15 with the mounting parts 1542 inserted into the shaft tube 153, the engagement parts 1543 engage with the mounting plates 151, 152 with a "snap" sound, thereby attaching the hinge cover 154. In this way, the workability of the attachment is excellent. The hinge cover 154 is excellent in design because it can cover the mounting plates 151, 152 where the screw heads and slotted holes are visible. In addition, as shown in Fig. 17(b), the hinge cover 154 has a surface that is continuous with the inclined surfaces of the protrusions 11A21, 11B21, and 11C21 formed on the rear members 11A2, 11B2, and 11C2 of each panel body, and is excellent in design.

[0061] (Opening and closing counter) FIG. 18 shows a counter unit that counts the number of times the opening / closing body 11 is opened and closed, FIG. 18(a) being a perspective view and FIG. 18(b) being an exploded perspective view. FIG. 19 shows the detected portion, where FIG. 19(a) is a perspective view and FIG. 19(b) is a cross-sectional view. The counter unit 171 detects when the detected part 172 approaches and counts the number of times. In this example, the detected part 172 has a magnet Mg, and the counter unit 171 has a magnetic sensor.

[0062] As shown in FIG. 18( b ), the counter portion 171 includes a cover 1711 , a shielding plate 1712 , a magnetic counter 1713 , and a mounting bracket 1714 . The magnetic counter 1713 includes a magnetic sensor, a counter that counts the number of times that magnetism is detected, and a display that displays the number of times counted by the counter. The cover 1711 covers the magnetic counter 1713 and has a window formed therein through which the display of the counter can be seen. The mounting metal fitting 1714 is a metal fitting for screwing into a nut rivet PN attached to a hole 11C2H3 (see FIG. 10) formed in the rear member 11C2 of the lower panel body 11C. The shielding plate 1712 is a shielding plate to prevent a detection sensor (photoelectric sensor) for detecting people, obstacles, etc., which will be described later, from mistakenly detecting the opening / closing body 11 itself as an obstacle when the opening / closing body 11 is opened or closed.

[0063] As shown in FIG. 19, the detected part 172 has a magnet Mg and an attachment part 1721 for attaching the magnet Mg.

[0064] 20A to 20C are diagrams showing a state in which the counter portion 171 is attached to the lower panel body 11C, with FIG. 20(a) being a perspective view, FIG. 20(b) being a rear view, and FIG. 20(c) being a side view. As described above, the counter portion 171 is attached to one of the ends in the width direction of the rear member 11C2 of the lower panel body 11C. On the other hand, detected portion 172 is attached to mounting portion 1355 (see FIG. 27(b)) near the top of a guide member cover which will be described later. The guide member cover is attached along the vertical rail portion of guide member 12, and is a cover which also covers the end portion of opening / closing body 11, and is located opposite counter portion 171 attached near the end portion of opening / closing body 11. With the above configuration, the counter unit 171 attached near the lower end of the opening / closing body 11 also moves up and down in conjunction with the opening and closing operation (i.e., up and down movement) of the opening / closing body 11. When the counter unit 171 approaches the detectable part 172 attached to the upper part of the guide member cover, the magnetic sensor detects magnetism and the counter unit increments the count. This logs the number of times the opening / closing body 11 has been opened and closed. The number of times the opening / closing body 11 has been opened and closed is displayed on the display unit of the counter unit 171 and is useful for the maintenance of the opening / closing device 1, etc. Since the counter unit 171 is attached near the lower end of the opening / closing body 11, it can be easily checked when necessary. In this embodiment, an example is given in which a counter portion is attached to the panel body and a detectable portion is attached to the guide member cover, but it is sufficient that "one of the detectable portion or the sensor portion is provided on either an immovable member (not limited to the guide member cover, but a non-moving member arranged in the vicinity of the panel body) or the panel body, and the other of the detectable portion or the sensor portion is provided on the other of the immovable member or the panel body." In addition, in this embodiment, the sensor unit and the counter unit are integrated, but the sensor unit and the counter unit may be separate (placed at a distance and communicating with each other by wire or wirelessly, etc.) The counter unit equipped with the display unit is preferably installed at a position lower than a person's height so that it can be easily checked when necessary.

[0065] (Opening and closing body) Fig. 21 is a diagram (front view, top view, bottom view, and both side views) showing the entire opening / closing body 11. Fig. 22 is a diagram showing the entire opening / closing body 11, and is a perspective view seen from the back side. The upper panel body 11A, the intermediate panel body 11B, and the lower panel body 11C described above are rotatably connected to one another by a hinge member 15, and rollers Wh that run along guide members 12 are provided at both ends. The intermediate panel body 11B is provided in a number of variations that have the same basic structure but different vertical sizes, making it possible to combine intermediate panel bodies of different sizes to adjust the height of any opening. The front side of the opening / closing body 11 is formed flat by the upper panel body 11A, the intermediate panel body 11B, and the lower panel body 11C described above, and has a high design quality. In addition, the front member of each panel body is made of a steel plate with a thickness of 0.8 mm or more, and each panel body has a mutually overlapping structure (a structure in which the panels partially overlap each other), so it functions as a fire prevention facility (no prescribed fire test is required). The dimension by which each panel body overlaps each other is preferably 5 to 20 mm, and more preferably 10 to 17 mm.

[0066] (Side structure) FIG. 23 is a plan view showing the configuration of the side structure portion 13 which is a mechanism of the side portion of the opening and closing device 1. As shown in FIG. The side portion of the opening / closing device 1 is equipped with a guide member 12 that guides the opening and closing operation of the opening / closing body 11, a holder member 131 that covers the side of the guide member 12, a vertical rail fixing frame 132 that is a support member for erecting the vertical rail portion of the guide member 12, a guide member cover 135 that covers the side structure portion 13, a sensor installation member 136 for installing a detection sensor (photoelectric sensor OS) for detecting people, obstacles, etc., a vertical seal 134 that seals between the front side of the opening / closing body 11 and the opening, and a vertical seal fixing frame 133 for attaching the vertical seal 134. In addition, FIG. 23 shows only the side portion at one end of the opening and closing device 1, but the other end basically has the same (symmetrical) configuration (there are differences based on the sensor type, such as the difference between the light-emitting part and the light-receiving part in the photoelectric sensor OS and the difference between the light-emitting part and the reflecting part).

[0067] Figure 24 shows the vertical rail of the guide member 12, where Figure 24(a) is an oblique view showing a portion of the vertical rail, Figure 24(b) is a side view (part of the vertical rail is omitted because the member is long in the vertical direction), and Figure 24(c) is a plan view. The vertical rail has a generally U-shaped cross section as a basic form for receiving and guiding the rollers Wh supported by a cantilever structure. Also, the vertical rail has a roller receiving recess 121, which is a recess on one side of the generally U-shaped cross section, so that the rollers Wh are less likely to derail. The vertical rail is provided with a plurality of screw holes, and is fixed (screwed) to the vertical rail fixing frame 132 together with the holder member 131. The vertical rails are made of an aluminum alloy.

[0068] Figure 25 shows the state in which the vertical rail of the guide member 12 is attached to the holder member 131, where Figure 25(a) is a front view (part of the figure is omitted in the vertical direction because the member is long in the vertical direction), Figure 25(b) is a side view (part of the figure is omitted in the vertical direction because the member is long in the vertical direction), and Figure 25(c) is a plan view. The holder member 131 is a member formed of a steel material having a thickness of 0.8 mm or more so as to completely cover the side surface of a vertical rail having a substantially U-shaped cross section. Guide members (rails, etc.) rub against guided members (rollers, etc.), so if they are made of steel, the friction can cause paint to peel off and rust, damaging the design. On the other hand, if the guide members (rails, etc.) are made of aluminum, it becomes difficult to obtain fire resistance in these areas. In contrast, according to the opening and closing device 1 of this embodiment, the guide member (rail, etc.) that comes into contact with the guided member (roller, etc.) is made of aluminum, and the holder member that surrounds it is made of steel, making it possible to achieve both design and fire resistance.

[0069] Figure 26 shows the state in which the holder member 131 and the vertical rail of the guide member 12 are attached to the vertical rail fixing frame 132, where Figure 26(a) is a rear view (part of the figure is omitted in the vertical direction because the member is long in the vertical direction), Figure 26(b) is a side view (part of the figure is omitted in the vertical direction because the member is long in the vertical direction), and Figure 26(c) is a plan view. The vertical rail fixing frame 132 is a support member for erecting the vertical rails on both sides of the opening, and has a substantially Z-shape in cross section. The vertical rail fixing frame 132 has an installation surface 1321 which is an attachment surface for the wall surface beside the opening, a first attachment surface 1322 for attaching a vertical rail or the like, and a second attachment surface 1323 for attaching a guide member cover 135. The installation surface 1321 and the first attachment surface 1322 are approximately perpendicular to each other, and the first attachment surface 1322 and the second attachment surface 1323 are approximately perpendicular to each other. In addition, a folded portion for reinforcement is formed on the side of the installation surface 1321 opposite to the connection portion with the first attachment surface 1322.

[0070] FIG. 27 shows the guide member cover 135, where FIG. 27(a) is a front view, FIG. 27(b) is a side view, and FIG. 27(c) is a plan view. The guide member cover 135 is a cover for covering the vertical rails of the guide member 12 and the end of the opening / closing body 11 (panel body) to improve the design. Moreover, the guide member cover 135 of this embodiment has a detection sensor (multiple optical axis photoelectric sensor OS) disposed therein for detecting a person, an obstacle, and the like. The guide member cover 135 has a first side 1351 that is approximately parallel to the opening / closing body 11 on the indoor side of the opening / closing body 11 (panel body), a second side 1352 that is approximately perpendicular to the first side 1351 and is arranged between the first side 1351 and the opening / closing body 11, and a third side 1353 that entirely covers the side portion of the side structure portion 13. A light-transmitting window 1354 that transmits light from the photoelectric sensor OS is formed on the second side surface 1352, and the photoelectric sensor OS is provided close to the light-transmitting window 1354. In this embodiment, the position of the upper end of the light-transmitting window 1354 is at a height of about 1,400 mm from the lower end of the guide member cover 135. Further, mounting portions 1355 for mounting detected portion 172 are formed on second side surface 1352. Guide member covers 135 are provided on both ends of the opening, and detected portion 172 is attached to guide member cover 135 on the side where counter portion 171 is provided. In this embodiment, the light-transmitting window 1354 is a hole formed in the guide member cover 135, but the photoelectric sensor OS is provided close to the light-transmitting window 1354 (positioned so as to cover the hole), so that it is possible to prevent a finger from being caught in the hole. To further prevent a finger from being caught in the hole, a protective cover may be provided on the light-transmitting window. The protective cover is formed of a member that transmits light from the photoelectric sensor OS, and may be, for example, a film member that is attached to the entire second side surface 1352, or a member that is fitted into the hole of the light-transmitting window 1354.

[0071] Figure 28 shows the sensor mounting member 136, with Figure 28(a) being a side view (part of the member is omitted in the vertical direction because it is a member that is long in the vertical direction), Figure 28(b) being a front view (part of the member is omitted in the vertical direction because it is a member that is long in the vertical direction), and Figure 28(c) being a plan view. The sensor mounting member 136 is a support member for installing the photoelectric sensor OS within the guide member cover 135, and includes a first mounting surface 1361 that serves as the mounting surface for the first mounting surface 1322 of the vertical rail fixing frame 132, a second mounting surface 1363 that serves as the mounting surface for the second side surface 1352 of the guide member cover 135, and a mounting surface 1362 on which multiple photoelectric sensors OS are mounted in the vertical direction. First installation surface 1361 and mounting surface 1362 are approximately perpendicular to each other, and mounting surface 1362 and second installation surface 1363 are approximately perpendicular to each other. A folded portion for reinforcement is formed on the side of first installation surface 1361 opposite to the connection portion with mounting surface 1362.

[0072] As shown in Figure 23, the side structure 13 is constructed by fixing a vertical rail fixing frame 132 together with a vertical seal fixing frame 133 to the wall surface, and connecting the above-mentioned guide member 12, holder member 131, guide member cover 135, and sensor installation member 136 to the vertical rail fixing frame 132. In addition, a vertical seal 134 made of an elastic material such as rubber is attached to the vertical seal fixing frame 133 to seal between the front side of the opening / closing body 11 and the opening, improving the design and preventing the intrusion of dirt and other particles. 23, in the opening and closing device 1 of this embodiment, a gap S occurs between the end of the guide member cover 135 and the opening and closing body 11 (the rear surface of the panel body) due to its relationship with the hinge member 15. As described above, each panel body is provided with cover members 161, 162 that close this gap S (the gap portion defined by the guide member cover, the rear surface of the panel body, and the hinge member), preventing fingers from getting caught in the gap S.

[0073] (Opening and closing body upper structure) In the opening / closing device 1 of this embodiment, in the gap between the upper wall surface of the opening (a portion called a lintel) and the upper portion of the opening / closing body 11, a convex portion extending from the opening / closing body 11 toward the wall surface and a convex portion extending from the wall surface toward the opening / closing body 11 are formed, and the two convex portions are arranged so as to be staggered. More specifically, the opening / closing body 11 (panel body) has a first convex portion protruding toward the opening and extending in the longitudinal direction at a position facing the upper wall surface of the opening on the outdoor side of the upper panel body 11A located at the top end of the opening / closing body 11 (panel body), and a second convex portion protruding toward the upper panel body 11A and extending in the longitudinal direction at a position facing the upper panel body 11A on the indoor side of the upper wall surface of the opening, and the first convex portion and the second convex portion are formed so as to overlap each other partially when viewed in the vertical direction. The dimension by which the first convex portion and the second convex portion overlap each other is preferably 0.3 to 7.5 mm. In this example, the first protrusion is formed on the upper panel body 11A located at the top end of the panel bodies, but the present invention is not limited to this, and the first protrusion may be formed on any panel body (a panel body facing the upper wall surface of the opening). Similarly, the second protrusion formed on the upper wall surface of the opening is not limited to being opposed to the upper panel body 11A, and may be opposed to any panel body (a panel body facing the upper wall surface of the opening).

[0074] Figure 29 shows a first convex member 181, which is a member that forms the first convex portion, where Figure 29(a) is a plan view (part of it is omitted in the width direction because it is a member that is long in the width direction) and Figure 29(b) is a side view. The first convex member 181 has an installation surface 1811 which serves as an attachment surface for the upper surface of the upper panel body 11A, a first convex portion 1812 which forms the first convex portion, and a connection surface 1813 which is approximately perpendicular to the installation surface 1811 and the first convex portion 1812 and connects the two. The first convex member 181 is made of steel and has a thickness of 0.8 mm or more.

[0075] Figure 30 shows the second convex member 182, which is a member that forms the second convex portion, with Figure 30(a) being a rear view (part of it is omitted in the width direction because it is a member that is long in the width direction) and Figure 30(b) being a side view. The second protrusion member 182 includes a second protrusion 1821 that forms the second protrusion, and a mounting surface 1822 that serves as a mounting surface for mounting to the upper wall surface of the opening portion. The second convex member 182 is made of steel and has a thickness of 0.8 mm or more. A horizontal seal (sealing member) 184 made of an elastic member such as rubber is provided at the top of the opening to cover the gap between the opening / closing body 11 and the upper wall surface of the opening in order to improve the design and prevent the intrusion of dust and the like. A seal mounting member 183 is also provided for mounting the horizontal seal 184. Note that while Fig. 31 shows the horizontal seal 184 penetrating the upper panel body 11A, in reality the horizontal seal 184 bends and comes into contact with the surface of the upper panel body 11A. The seal mounting member 183 is a member that is substantially L-shaped in a side view, and is attached to the upper wall surface of the opening together with the second protruding portion member 182 on one side of the L shape, and the horizontal seal 184 is sandwiched between the second protruding portion 1821 and the seal mounting member 183 on the other side. At this time, the protruding dimension of the horizontal seal 184 is adjustable (it may be configured as a non-adjustable structure). In addition, the horizontal seal 184 can be replaced by removing the seal mounting member 183 (or loosening the clamping) (it may be configured as a non-replaceable structure). The seal mounting member 183 may be formed of any material having the required strength. The seal mounting member 183 may be formed of a steel material with a thickness of 0.8 mm or more, and the second protruding portion member 182 may be formed of any material having the required strength.

[0076] 31 is a side view showing the vicinity of the upper part of the opening. Note that although the configuration of the upper panel body 11A is partially different from that described above, the functional concept of the first convex member 181 is the same. A first protruding member 181 is attached to the top surface of the upper panel body 11A, and a second protruding member 182 is attached to the upper wall surface of the opening. As described above, the first convex member 181 and the second convex member 182 are formed of a steel material having a thickness of 0.8 mm or more, and the first convex portion 1812 and the second convex portion 1821 are formed so as to overlap each other when viewed vertically, so that a higher shielding performance can be obtained. In addition, a flame-blocking performance can be obtained in the gap between the upper wall surface of the opening and the upper portion of the opening / closing body 11, so that the function as a fire prevention facility can be improved. Also, first convex portion 1812 and second convex portion 1821 are formed so that the protruding width of first convex portion 1812 is greater than the protruding width of second convex portion 1821. In other words, the distance between the tip of second convex portion 1821 and upper panel body 11A is greater than the distance between the tip of first convex portion 1812 and the upper wall surface of the opening. This prevents the tip of first convex portion 1812 and the upper wall surface of the opening from coming into contact with upper panel body 11A and damaging upper panel body 11A when upper panel body 11A approaches the wall surface due to some influence. The first convex portion 1812 may be provided with a contact protection member made of resin or the like.

[0077] (Release key handle structure) As described above, the opening / closing device 1 is provided with a mechanism (such as the trolley arm 144) for locking the movement of the opening / closing body 11, and is provided with an unlocking operation unit 145 so that the lock can be manually released in the event of a power outage, etc. To enable this unlocking operation from the outdoors, a hole is drilled in the opening / closing body 11 so that an operation unit identical to the operation unit 145 can be pulled out to the outdoors, while from a crime prevention standpoint, a key is required to pull out the operation unit 145 to the outdoors, which is the release key.

[0078] Figure 32 shows the release key handle portion 19, where Figure 32(a) is a front view, Figure 32(b) is a plan view, and Figure 32(c) is a rear view showing the plate member 192 provided on the back side of the opening / closing body 11 (panel body). The release key handle portion 19 comprises a release key 193, a release key mounting portion 191 for mounting the release key to the opening / closing body 11 (panel body), and a plate member 192 for clamping and mounting the opening / closing body 11 (panel body) between the release key mounting portion 191 and the plate member 192. The release key attachment portion 191 has an oval shape when viewed from the front, and an approximately T-shape when viewed from the top. The oval handle portion 1911 is formed with a thickness necessary for hanging a finger so that the opening / closing body 11 can be moved up and down by hanging a finger. In this embodiment, the thickness t is 20 mm. The thickness of the handle portion 1911 is preferably 10 mm or more, and more preferably 20 mm or more. The weight of the opening / closing body varies depending on the opening dimension (= the size of the opening / closing body), but the dimension for hanging a finger is preferably at least 10 mm or more, and if the opening / closing body is heavy, it is more preferable that the dimension is 20 mm or more. An insertion portion 1912 protrudes from the rear surface of the handle portion 1911 to be inserted into a hole formed in the opening / closing body 11. The insertion portion 1912 is configured so that a part of the release key 193 and the operation portion 145 are inserted therein. A reduced diameter portion 1913 is formed at the tip of the insertion portion 1912. The plate member 192 is a plate-like member that is oval in front view, and has a hole formed in the center into which the reduced diameter portion 1913 fits, and screw holes on both sides. The opening / closing body 11 is formed with a hole through which the insertion portion 1912 of the release key attachment portion 191 is inserted, and holes for screws are also drilled on both sides of the hole. The release key attachment portion 191 is inserted into the hole from the front side of the opening / closing body 11, the plate member 192 is fitted into the reduced diameter portion 1913 on the rear side, and the screw is tightened into the release key attachment portion 191 from the rear side, thereby attaching the release key handle portion 19.

[0079] FIG. 33 is a diagram for explaining the released state of the release key 193. As shown in FIG. By inserting the key 194 into the release key 193 and turning it, the release key 193 is released, and the operation unit 145 connected to the release key 193 can be pulled out together with the release key 193. By pulling the operation unit 145, the lock of the mechanism (the trolley arm 144, etc.) that locks the movement of the opening-closing body 11 can be released, and the opening-closing body 11 can be opened and closed by hand. At this time, the opening / closing body 11 can be opened and closed by using the release key attachment portion 191 as a handle. Since there is no need to provide a separate handle or the like for opening and closing, costs can be reduced and design can be improved.

[0080] As described above, according to the opening and closing device 1 of this embodiment, the front side of the opening and closing body 11 is formed flat due to the configuration of the upper panel body 11A, the intermediate panel body 11B, and the lower panel body 11C, and it has a high design quality. In addition, the front member of each panel body is made of a steel plate having a thickness of 0.8 mm or more, and each panel body has a mutually interlocking structure, so that it functions as a fire prevention facility (no prescribed fire prevention test is required). Therefore, it is possible to manufacture a large opening and closing device 1 that exceeds the size that can be tested at a fire prevention test facility. In addition, in each panel body, a hinge connection is formed by folding back a front member made of a steel plate, and as a result, each panel body has a structure in which a front member made of a steel plate is joined by a hinge. The rear member is made of aluminum, but aluminum may melt down if exposed to high heat. In other words, if each panel body is joined by a hinge through the rear member, there is a risk that the mutual joining will be lost if the rear member melts down due to heat. In contrast, according to the opening and closing device 1 of this embodiment, since it has a structure in which a front member made of a steel plate is joined by a hinge, the occurrence of the above-mentioned problems is suppressed. In addition, the front member of each panel is made of a steel plate folded over several times to form a panel with a given thickness, making it easy to obtain strength. By providing a flatness retaining member, the strength can be further increased and the flatness of the front can be improved.

[0081] In this embodiment, the rear member and the flat surface retaining member are integrally formed, but the present invention is not limited to this, and the rear member and the flat surface retaining member may be formed separately. The rear member is not an essential member, and the flat surface retaining member is not an essential member either. Depending on the size and material of the front member, the front member alone may be strong enough (the front member has a structure in which a steel plate is bent at its upper and lower ends with a certain width, so that a certain level of strength can be obtained), and in such a case, it may be possible to not provide either or both of the rear member and the flat surface retaining member. In addition, in the present embodiment, the rear member and the flat surface holding member are formed as an extrusion of an aluminum alloy, but the present invention is not limited to this, and the rear member and the flat surface holding member can be formed of any material (e.g., resin, etc.) having the required strength. Similarly, the guide member (rail, etc.) can be formed of any material (e.g., resin, etc.) having the required strength.

[0082] <Embodiment 2> The opening and closing device of embodiment 2, like embodiment 1, is an opening and closing device known as an overhead door or over-sliding door, and is roughly configured to include an opening and closing body in which a number of panel bodies are rotatably connected to each other, a guide member for guiding the movement of the opening and closing body and a structure for installing the guide member, a drive device and its mechanism for driving the opening and closing of the opening and closing body, and an opening and closing drive unit that includes a control device for controlling the opening and closing operation, etc. The configuration other than the opening / closing body is the same as that of the first embodiment, so the description here is omitted, and the panel body constituting the opening / closing body will be described below. Also, in each panel body, the description here of the configuration that is conceptually the same as that of the first embodiment will be simplified or omitted.

[0083] (Upper panel body) Figures 34 to 36 are diagrams showing the upper panel body 21A of embodiment 2, with Figure 34(a) being a cross-sectional view and Figure 34(b) being a side view. Also, Figure 35(a) is a rear view (part of the widthwise end portion is omitted since the member is elongated in the widthwise direction), Figure 35(b) is a front view of the widthwise end portion, Figure 36(a) is a side view showing the flatness retaining member 21A3, and Figure 36(b) is an enlarged view of region B in Figure 34(a). The upper panel body 21A comprises a front member 21A1 which forms the front surface facing the outdoor side of the panel body and which is formed flat (without ribs), a flatness maintaining member 21A3 for maintaining the flatness of the front surface, a rear member 21A2 which forms the rear surface facing the indoor side of the panel body, and a side cover 21A6 which covers the side surface of the panel body. The upper panel body 21A is provided on its upper portion with a first convex member 181. The first convex member 181 has the same concept as in the first embodiment, and therefore a description thereof will be omitted here.

[0084] The front member 21A1 is formed by bending a steel plate having a thickness of 0.8 mm or more. The upper end side of the front surface member 21A1 is bent from the front surface to the rear surface at a substantially right angle to form a top surface, and is bent from the top surface to the bottom at a substantially right angle to form an upper folded portion. As shown in FIG. 35(a), similarly to the first embodiment, a hole for attaching a member for connecting the trolley arm 144 is formed approximately in the center in the width direction of the upper folded portion. As in the first embodiment, a grooved protrusion 21A13 and a grooved recess 21A14 are formed at the lower end of the front member 21A1 (see FIG. 36(b)). The rear side of the grooved recess 21A14 is bent upward at a substantially right angle to form a lower folded portion 21A12, which constitutes a hinge connection member attachment portion. A front member hinge connection portion 21A7 made of a steel plate having a thickness of 0.8 mm or more is fastened to the lower folded portion 21A12 (hinge connection member attachment portion). With the above-described configuration, the hinge connection member mounting portion and the front member hinge connection portion are formed at a position offset toward the interior side by a predetermined distance from the front surface. Similarly to the first embodiment, the front member hinge connection portion 21A7 is formed with a hole (slot) for inserting the fastening member (nut rivet) PN therethrough.

[0085] The flatness maintaining member 21A3 is a member for maintaining the flatness of the front surface, similar to the first embodiment, but the flatness maintaining member 21A3 in this embodiment is formed separately from the rear surface member 21A2. The flatness maintaining member 21A3 is formed by folding back a steel plate, and as shown in FIG. 36(a), has a front surface 21A31, upper and lower surfaces 21A32, and two rear surfaces 21A33 folded back from the upper and lower surfaces. The front surface 21A31 is adhered to the rear surface side of the front surface member 21A1, and the rear surface 21A33 is adhered to the front surface side of the rear surface member 21A2.

[0086] The rear member 21A2 is joined to the front member 21A1 to form a hollow panel body, as in the first embodiment, but the rear member 21A2 in this embodiment is formed by folding back a steel plate. The rear member 21A2 is basically a flat member, and its upper end is configured to face the upper surface and the upper folded portion of the front member 21A1, and is joined to the front member 21A1 at this portion by riveting or screwing. As in the first embodiment, a hole for attaching a member for connecting the trolley arm 144 is formed in the approximate center of the upper end side of the rear member 21A2. 35(a), holes 21A2H3 through which fastening members (nut rivets) PN for attaching roller attachment members are inserted are formed at both ends of the rear member 21A2 in the width direction, similar to embodiment 1. This allows the rollers to be attached, similar to embodiment 1. A hole (long hole) is formed on the lower end side of the rear member 21A2 so as to communicate with a hole (long hole) for inserting the fastening member (nut rivet PN) of the front member hinge connection part 21A7. The longitudinal directions of these long holes are different, and the effects thereof are the same as in the first embodiment. Also, the front member 21A1 and the rear member 21A2 are fastened by the nut rivet PN inserted into these long holes, and the hinge member 15 is screwed using the nut rivet PN, as in the first embodiment. The location 21A22 where the hole for inserting the fastening member (nut rivet PN) of the rear member 21A2 is formed (see FIG. 36(b)) is the location where the hinge member is attached, and is the "rear member hinge connection part formed at a position opposite to the front member hinge connection part". The rear member 21A2 is basically formed on the same plane as the rear member hinge connection portion 21A22, and at the upper end side where the trolley arm 144 is connected, it has a shape that protrudes one step toward the rear side by an amount equivalent to the thickness of the hinge member 15.

[0087] The upper panel body 21A of this embodiment is provided with side covers 21A6 that cover the sides of the panel body. As shown in Fig. 34(b), the side cover 21A6 has a shape that generally follows the shape of the side of the upper panel body 21A, and has attachment parts that are folded back to the front and rear sides of the upper panel body 21A, as shown in Fig. 35. On the rear side, attachment parts are formed in two places, on the upper and lower sides, so as to avoid the places where the roller attachment members and the hinge members 15 are attached. The attachment portion folded back toward the front side is formed within an area covered by the guide member cover, and therefore the design is not marred by the attachment portion.

[0088] (Middle panel body) Figures 37 to 39 are diagrams showing an intermediate panel body 21B of embodiment 2, with Figure 37(a) being a cross-sectional view and Figure 37(b) being a side view. Also, Figure 38(a) is a rear view (part of the panel body 21B is omitted in the width direction because the panel body 21B is a member that is long in the width direction), Figure 38(b) is a front view of the end portion in the width direction, Figure 39(a) is an enlarged view of the upper end of Figure 37(a), and Figure 39(b) is an enlarged view of the lower end of Figure 37(a). The intermediate panel body 21B comprises a front member 21B1 which forms the front surface facing the outdoor side of the panel body and which is formed flat (without ribs), a flatness maintaining member 21B3 for maintaining the flatness of the front surface, a rear member 21B2 which forms the rear surface facing the indoor side of the panel body, and a side cover 21B6 which covers the side surface of the panel body.

[0089] The front member 21B1 is formed by bending a steel plate having a thickness of 0.8 mm or more. The lower end side of the front member 21B1 is basically similar to the lower end side of the front member 21A1 of the upper panel body 21A, and is formed with a grooved protrusion 21B13 and a grooved recess 21B14 (see Figure 39 (a)), and a front member hinge connection portion 21B7 is fastened to the lower folded portion 21B12 (hinge connection member mounting portion). The upper end side of the front member 21B1 has the same structure as the lower end side (upside down) except for the difference based on the interdigital structure (the positional relationship between the interdigital convex portion and the interdigital concave portion is opposite to that on the lower end side), and has an interdigital convex portion 21B13 and an interdigital concave portion 21B14 (see Figure 39 (b)), and a front member hinge connection portion 21B7 is fastened to the upper folded portion 21B12 (hinge connection member mounting portion). With the above-described configuration, the hinge connection member mounting portion and the front and rear member hinge connection portions are formed at a position offset toward the indoor side by a predetermined distance from the front side, and the front and rear member hinge connection portions 21B7 are formed with holes (long holes) for inserting the fastening members (nut rivets) PN, as in embodiment 1.

[0090] The flatness maintaining member 21B3 is similar in concept to the flatness maintaining member 21A3 of the upper panel body 21A, and therefore a description thereof will be omitted here.

[0091] The rear member 21B2 is also formed by folding back a steel plate. The configuration of the lower end side of the rear member 21B2 is basically the same as that of the lower end side of the rear member 21A2 of the upper panel body 21A, and a hole (long hole) is formed so as to communicate with a hole (long hole) for inserting a fastening member (nut rivet PN) of the front member hinge connection part 21B7. The longitudinal directions of these long holes are different, and the effects thereof are also the same. Also, the front member 21B1 and the rear member 21B2 are fastened by the nut rivet PN inserted into these long holes, and the hinge member 15 is screwed using the nut rivet PN. The location 21B22 (see FIG. 39(a)) where the hole for inserting the fastening member (nut rivet PN) of the rear member 21B2 is formed is the location where the hinge member is attached, and is the "rear member hinge connection part formed at a position opposite to the front member hinge connection part". The upper end side of the rear member 21B2 has the same structure as the lower end side (upside down), with the rear member hinge connection portion 21B22 (see Figure 39 (b)) positioned opposite the front member hinge connection portion 21B7, and the front member 21B1 and the rear member 21B2 are fastened together by a nut rivet PN. The rear member 21B2 is basically a flat plate-shaped member, and is recessed toward the front side by an amount equivalent to the thickness of the hinge member 15 at the locations (near the top and bottom ends) where the rear member hinge connection portions 21B22 are formed (see Figure 37(a)).

[0092] As shown in Fig. 37(b), the side cover 21B6 has a shape that generally follows the shape of the side surface of the intermediate panel body 21B, and has attachment parts that are folded back to the front side and rear side of the intermediate panel body 21B, as shown in Fig. 38. On the rear side, the attachment parts are formed so as to avoid the location where the hinge member 15 is attached. The attachment portion folded back toward the front side is formed within an area covered by the guide member cover, and therefore the design is not marred by the attachment portion.

[0093] (Lower panel body) Figures 40 to 42 are diagrams showing the lower panel body 21C of embodiment 2, with Figure 40(a) being a cross-sectional view and Figure 40(b) being a side view. Also, Figure 41(a) is a rear view (part of the panel body 21C is omitted in the width direction because the panel body 21C is a member that is long in the width direction), Figure 41(b) is a front view of the width direction end portion, and Figure 42 is an enlarged view of the upper end of Figure 40(a). The lower panel body 21C comprises a front member 21C1 which forms the front surface facing the outdoor side of the panel body and has a front surface formed flat (without ribs), a flatness maintaining member 21C3 for maintaining the flatness of the front surface, a rear member 21C2 which forms the rear surface facing the indoor side of the panel body, and a side cover 21C6 which covers the side surface of the panel body. The lower panel body 21C is a panel body located at the lowermost part of the opening / closing body, and is provided with a grounding body on the lower end side and a recessed portion for a handle is formed.

[0094] The front member 21C1 is formed by bending a steel plate having a thickness of 0.8 mm or more. The upper end side of the front surface member 21C1 (see FIG. 42) has the same configuration as the upper end side of the front surface member 21B1 of the intermediate panel body 21B, and therefore a description thereof will be omitted here. The lower end side of the front surface member 21C1 has a similar configuration to the lower end side of the front surface member 11C1 of the lower panel body 11C of the first embodiment, and therefore a description thereof will be omitted here.

[0095] The flatness maintaining member 21C3 is similar in concept to the flatness maintaining member 21A3 of the upper panel body 21A and the flatness maintaining member 21B3 of the intermediate panel body 21B, and therefore a description thereof will be omitted here.

[0096] The rear member 21C2 is also formed by folding back a steel plate, but a bottom end member 21C8 formed of an aluminum extrusion material as a separate member is attached to the bottom end side of the rear member 21C2. The upper end side of the rear member 21C2 (see FIG. 42) has the same configuration as the upper end side of the rear member 21B2 of the intermediate panel body 21B, so a description thereof will be omitted here. The rear member 21C2 has a recess 21C25 extending along its longitudinal direction and opening to the indoor side, which is formed by bending a steel plate. The recess 21C25 mainly functions as a handle when the opening / closing body is opened and closed by hand when the lower panel body 21C is in a vertical state. A support member 21C4 (see FIG. 41(a)) is provided between the upper and lower surfaces of the recess 21C25 and is attached to a position that is approximately the center of the width of the recess 21C25, and supports a load in the vertical direction. The support member 21C4 is attached to the upper and lower sides of the recess 21C25 across the recess 21C25, and also serves as a support member that supports a load in the vertical direction. The configuration of the lower end member 21C8 attached to the lower end side of the rear member 21C2 is similar to the configuration of the lower end side of the rear member 11C2 of the lower panel body 11C of embodiment 1, and is formed with an opening 21C29 for attaching the grounding body 21C5, a bearing portion 21C27 which is a recess for receiving the roller axle, and a handrail portion 21C26 which protrudes from the lower side to the upper side of the recess 21C25.

[0097] As shown in Fig. 40(b), the side cover 21C6 has a shape that generally follows the shape of the side surface of the lower panel body 21C, and has attachment parts that are folded back to the front and rear sides of the lower panel body 21C, as shown in Fig. 41. On the rear side, the attachment parts are formed so as to avoid the location where the hinge member 15 is attached and the recessed portion 21C25. The attachment portion folded back toward the front side is formed within an area covered by the guide member cover, and therefore the design is not marred by the attachment portion.

[0098] The opening and closing body is formed by connecting each of the panel bodies described above to be rotatable with each other by the hinge members 15. The configuration of the hinge members 15 (and the configuration in which the rollers Wh are supported by the hinge members 15 at both ends) and the connection method thereof are the same as those in the first embodiment, and therefore the description thereof will be omitted here. Of course, the opening / closing body of this embodiment may also be provided with the release key handle structure described in the first embodiment.

[0099] As described above, the opening and closing device of this embodiment is an example in which each panel body constituting the opening and closing body is entirely made of steel, and it is possible to obtain the same effects as the opening and closing device of embodiment 1. In addition, in the opening and closing device of this embodiment, the rear members of each panel body are also made of steel, so that it is possible to obtain higher flame blocking and fire prevention performance. In this embodiment, the front member of each panel body is formed from a steel plate having a thickness of 0.8 mm or more, but the same flame blocking and fire prevention performance can be obtained by forming the rear member from a steel plate having a thickness of 0.8 mm or more. The front member and the rear member may be formed from a steel plate having a thickness of 0.8 mm or more. In other words, it is sufficient that "the front member and / or the rear member is formed from a steel material having a thickness of 0.8 mm or more." The front and rear members may be made of steel plates with a thickness of 0.5 mm or more. The plane retaining member can be considered as the framework of the panel body, and therefore, a plane retaining member made of steel material corresponds to a "steel framework."

[0100] In the second embodiment, the flatness maintaining member is formed separately from the rear surface member, but similar to the first embodiment, the flatness maintaining member can also be formed integrally with the rear surface member. FIG. 43 shows an example of such a structure (using an intermediate panel body as an example). The rear member 31B2 of the intermediate panel body 31B shown in FIG. 43 is formed by bending a steel plate to form a flatness retaining member 31B3 as a recess that is recessed toward the front member 31B1 and substantially abuts against the back side of the front surface. Although the intermediate panel body is used as an example here, it is of course possible to apply this to the upper panel body and the lower panel body as well. In the case of the lower panel body, the recessed portion for the handle may be deep enough to substantially abut the back side of the front surface, so that it also functions as a member for maintaining a flat surface. As in each embodiment, the flat surface holding member 31B3 may be glued to the front surface member 31B1, and in the flat surface holding member 31B3 which is a recess, a support member may be provided between the upper and lower surfaces of the recess to support vertical loads, or a support member may be provided which straddles the recess and is attached to the upper and lower sides of the recess to support vertical loads.

[0101] Each panel constituting the opening / closing body in each embodiment has a certain thickness and is connected by a hinge member on the rear side (the hinge shaft is on the rear side), so when the panel body rotates on the hinge shaft, a gap is created on the front side at the joint part (the hook structure part) of each panel body. Since the panel body rotates only near the top of the opening where there is a curved rail part connecting the vertical rail and the horizontal rail, it is considered that there is basically little risk of fingers getting caught in this gap, but Figure 44 shows an example of a structure that reduces the risk of fingers getting caught in the gap part described above. In FIG. 44, a front member 41B1 of the intermediate panel body is shown as an example. In the front member 41B1, in the upper end of the slotted structure, the transition portion (slotted recess 41B14 portion) from the front surface to the portion (slotted protrusion 41B13) which becomes a convex portion in side view is formed as an inclined surface. In the lower end of the slotted structure, the slotted protrusion 41B13 is formed by hemming bending, and the depth dimension is made as small as possible. By forming the interleaving recess formed on the front side of the panel body (in this case, on the upper side of the panel body) with an inclined surface, it is possible to prevent fingers, etc. from getting too deep into the gap. In addition, the depth dimension of the interleaving recess formed on the front side is also small, which makes it possible to prevent fingers, etc. from getting too deep into the gap.

[0102] In each embodiment, an opening / closing device known as an overhead door or an over-sliding door has been used as a specific example of an opening / closing device, but the present invention is not limited to this and can be applied to any opening / closing device that is composed of a plurality of panel bodies but in which the opening / closing body moves along a guide member. In addition, in the embodiment, an example is described in which an opening / closing device is provided for driving the opening and closing of the opening / closing body, but the present invention is not limited to this and can also be applied to an opening / closing device in which the opening / closing body is opened and closed manually.

[0103] In each embodiment, "formed from steel material having a thickness of 0.8 mm or more" is exemplified by bending a single steel plate to form the front member, but the present invention is not limited to this. "Thickness of 0.8 mm or more" may be formed from a single steel material having a thickness of 0.8 mm or more as in the embodiment, or may be formed by stacking and combining multiple steel materials, such as two sheets of 0.4 mm steel material, to form a thickness of 0.8 mm or more.

[0104] In the embodiment, a guide rail and a roller running along the guide rail are used as examples of the guide member and the guided member, but the present invention is not limited to this, and any member or mechanism capable of guiding the opening and closing operation of the opening and closing body can be used as the guide member and the guided member.

[0105] In the embodiment, examples are shown in which a nut rivet, riveting, screw fastening, etc. are used as fastening members for fastening each member, but the present invention is not limited to this, and any fastening method capable of fastening each member may be used. However, as described above, by using the nut rivet, two members (for example, a front member and a rear member) can be fastened by the nut rivet being crimped, and then another member (for example, a hinge member) can be fastened by screwing the nut rivet, so that it is preferable to use the nut rivet in such a place.

[0106] In the embodiment, the flatness retaining member is joined (riveted or glued) to the front surface, but the present invention is not limited to this, and the flatness retaining member may be disposed so as to substantially abut the front surface (not joined). When the flatness retaining members are not joined to each other, a buffer member may be provided between the flatness retaining member and the front surface. In addition, in the embodiment, the recess or handhold portion as a handle when closing the opening / closing body 11 by hand is formed in the lower panel body as an example, but the recess or handhold portion as a handle may also be formed in the intermediate panel body or the upper panel body.

[0107] In addition, in an opening / closing device having an opening / closing body formed from an aluminum panel body, in order to provide it with a fire prevention function, a steel plate with a thickness of 0.8 mm or more may be arranged on the front or rear side of the aluminum panel body, as shown in Figure 45. [Explanation of symbols]

[0108] 1...Switchgear 11...Opening and closing body 11A...Upper panel body 11A1...Front member 11A12... Hinge connection 11A13...Aijakura convex part 11A14...Aijakura recess 11A17...Notch 11A1H1...Hole (slot) 11A2...Rear member 11A21...Protrusion 11A2H1...hole (long hole) 11A3...Flatness support member 11B...Intermediate panel body 11B1...Front member 11B12... Hinge connection 11B13...Aijakura convex part 11B14...Aijakura recess 11B17...notch 11B1H1...Hole (slot) 11B2...Rear part 11B21...Protrusion 11B23... Positioning member 11B2H1...Hole (slotted hole) 11B3...Flatness support member 11C...Lower panel body 11C1...Front member 11C12... Hinge connection 11C13...Aijakura convex part 11C14...Aijakura recess 11C17...Notch 11C1H1...Hole (slot) 11C2...Rear part 11C21...Protrusion 11C23... Positioning member 11C25...recess 11C26... Clue section 11C2H1...Hole (slot) 11C3...Flatness support member 11C4...Support member 12...Guide rail (guide component) 13...Side structure 131...Holder parts 135...Guide member cover 14...Opening and closing drive unit 145...Operation unit 15... Hinge member 151, 152...Mounting plate 153...Shaft cylinder 154... Hinge cover 1542...Mounting part 161, 162...Cover parts 171...Counter section (sensor section) 172...Detected part 184...Horizontal seal (sealing material) OS...Photoelectric sensor (detection sensor) PN...Nut rivet (fastening component) Wh...Roller (guided part) 21A...Upper panel body 21A1...Front member 21A12...Lower folded part (hinge connection part) 21A13...Aijakura convex part 21A14...Aijakura recess 21A2...Rear member 21A22...Rear member hinge connection part 21A3...Flatness support member 21A7...Front component hinge connection 21B...Intermediate panel body 21B1...Front member 21B12... Hinge connection part mounting part 21B13...Aijakura convex part 21B14...Aijakura recess 11B17...notch 11B1H1...Hole (slot) 21B2...Rear part 21B22...Rear member hinge connection part 21B3...Flatness retention member 21B7...Front member hinge connection 21C...Lower panel body 21C1...Front member 21C12... Hinge connection part mounting part 21C13...Aijakura convex part 21C14...Aijakura recess 21C2...Rear part 21C22...Rear member hinge connection 21C25...Concave 21C26... Clue section 21C3...Flatness support member 21C4...Support member 21C7...Front component hinge connection

Claims

1. An opening and closing device for opening and closing an opening formed in a wall surface separating an indoor area from an outdoor area, A plurality of panel bodies are arranged in the vertical direction so as to overlap each other partially; A guide member that guides the movement of the panel body in the vertical direction; Equipped with a front member that constitutes the front surface facing the exterior of the panel body and that is formed in a flat shape without ribs is made of steel, while a rear member that constitutes the rear surface facing the interior of the panel body and that is in contact with the front member to maintain its flatness is made of an aluminum alloy; A hinge connection portion is provided at an upper end portion and a lower end portion of the front member, the hinge connection portion being offset from the front surface by a predetermined distance toward the indoor side, the rear member is provided across the hinge connection portion of an upper end portion and the hinge connection portion of a lower end portion of the front member, An opening and closing device, wherein each of the panel bodies is rotatably connected to each other by a hinge member attached to the hinge connection portion.

2. The opening and closing device according to claim 1 , wherein the upper end portion and the lower end portion of the front member are folded back to form a foldable structure.

3. 3. The opening and closing device according to claim 2, wherein, as the groove structure, one of the grooves is formed as an inclined surface at a transition portion from the front surface to a portion which becomes a convex portion in a side view, and the other of the grooves is formed by hemming bending.

4. The opening and closing device according to claim 1 , wherein a notch is formed in a surface on which the hinge connection portion is formed in a longitudinal direction of the panel body at a location other than the location that becomes the hinge connection portion.

5. 5. The opening and closing device according to claim 1, wherein a long hole for inserting a fastening member for fastening the front member and the rear member is formed in each of the front member and the rear member, and the longitudinal direction of the long hole in the front member and the longitudinal direction of the long hole in the rear member are different directions.

6. 6. An opening and closing device as described in any one of claims 1 to 5, wherein the rear member is formed with a protrusion protruding from the rear surface toward the indoor side and having an inclined or curved surface toward the point of the hinge member that protrudes most toward the indoor side.

7. 7. The opening and closing device according to claim 6, further comprising a hinge cover covering a mounting plate portion of the hinge member, the hinge cover having a surface that extends continuously from the inclined surface or curved surface to a point of the hinge member that protrudes most toward the indoor side.

8. The opening and closing device according to claim 1 , wherein the flatness retaining member and the front surface member are bonded together.

Images