Door frame structure in door device and method for opening inspection cover of door frame

Abstract

To provide a door frame structure with a first door body 1 and a second door body 2 connected via a corner part with a door tip side edge of 90 degrees, having a first opening / closing mechanism K1 and an opening / closing mechanism K2 of first and second door devices incorporated with a first upper frame 5 and a second upper frame 15, capable of improving convenience when performing maintenance on the first opening / closing mechanism K1 and the second opening / closing mechanism K2.SOLUTION: In a door frame structure, each of inner plate surface parts 5b and 15b of first and second upper frames 5 and 15 has a first inspection cover and a second inspection cover capable of opening and closing each separately. Maintenance of corresponding first and second opening / closing mechanisms K1 and K2 can be performed by opening the first and second inspection covers, which are the inner plate surface parts 5b and 15b.SELECTED DRAWING: Figure 7

Description

[Technical Field]

[0001] The present invention relates to the technical field of a door frame structure in a door device in which two sets of door bodies that open and close an entrance are arranged side by side in a butted state (butted together, bent state) at a right angle (90 degrees), for example, and a method for assembling and opening an inspection cover for the door frame. [Background technology]

[0002] Generally, among door devices equipped with door bodies that can be opened and closed, there are those that have two sets of door bodies that can be opened and closed separately, arranged so that they butt against each other (side by side) at a corner that has a predetermined (appropriate) angle, such as a right angle, and when the two sets of door bodies are closed, the leading edge portions of the doors face each other at the corner (intersection). In such door devices, if a vertical frame is provided at the corner portion as a door stop against which the leading edge of the door body abuts when closed, when both door bodies are opened, the vertical frame will become an obstacle, standing alone like a center pillar in the entrance area. Therefore, a structure is known in which there is no vertical frame at the corner portion, so that when both door bodies are open, the entrance area becomes a wide opening space with no obstructive vertical frame at the corner portion, thereby improving mobility (see, for example, Patent Document 1). If a door device with two sets of door bodies arranged in this way is installed, for example, as a toilet booth in a private room in a hospital, opening and closing the main door body (one of the door bodies) will be sufficient when a person who can stand on their own enters or exits, but when a wider range of movement is required, such as when a person in a wheelchair enters or exits, both door bodies can be opened to ensure a wider opening width at the entrance and exit area, which has the advantage of improving convenience for entering and exiting. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2011-127373 Summary of the Invention [Problem to be solved by the invention]

[0004] However, when the door upper frames are butted together at the corners as in the above-mentioned patent document, and the opening and closing mechanism of the door body is installed inside each of the door upper frames, maintenance of the opening and closing mechanism is necessary. However, the above-mentioned conventional technology does not propose any maintenance of the opening and closing mechanism installed inside each of the door upper frames. As a result, there are problems such as how to make it easy to maintain the opening and closing mechanism installed inside the door upper frames, and these are the issues that the present invention aims to solve. [Means for solving the problem]

[0005] The present invention has been made in view of the above-mentioned circumstances and with the aim of solving these problems, and the invention of claim 1 is a door frame structure for a door device in which two sets of first and second door bodies are arranged side by side with a predetermined angle between them, and the leading edge portions of the first and second door bodies are arranged to form a corner, and the door frame of the door device is arranged so that the leading edge edges of the first and second upper frames corresponding to the first and second door bodies butt against each other, and these opposing portions are connected to form a structure without a leading edge vertical frame in the corner, and opening and closing mechanisms for the first and second door bodies are separately installed in each space between the opposing inner and outer panel portions inside and outside the first and second upper frames, and the inner panel portions of the first and second upper frames are configured as first and second inspection covers that can be opened and closed separately. The invention of claim 2 is a door frame structure in the door device described in claim 1, characterized in that the first inspection cover is provided with a regulating portion that regulates the opening of the second inspection cover when the first inspection cover is closed. The invention of claim 3 is a door frame structure in the door device described in claim 2, characterized in that the regulating portion that regulates the opening of the second inspection cover is configured so that the leading edge portion of the first inspection cover abuts and faces the trailing edge portion of the second inspection cover more closely than the leading edge portion of the second inspection cover. The invention of claim 4 is a door frame structure in a door device according to claim 3, characterized in that the door-front edge portion of the first inspection cover faces the second inspection cover with a gap therebetween. The invention of claim 5 is a door frame structure in a door device described in any one of claims 1 to 4, characterized in that the door edge portion of the second inspection cover is supported in a detachable manner via mounting hardware provided on the outer panel surface of the second upper frame, and the door edge portion of the first inspection cover is supported in a detachable manner via mounting hardware provided on the second inspection cover. The invention of claim 6 is a method for opening an inspection cover of a door frame in a door device, in which two sets of first and second door bodies are arranged side by side at a predetermined angle, and the leading edge portions of the first and second door bodies are arranged to form a corner, and the door frames of the door device are arranged so that the leading edge edges of the first and second upper frames corresponding to the first and second door bodies butt against each other and the opposing portions are connected to form a configuration in which there is no leading edge vertical frame in the corner, and opening and closing mechanisms for the first and second door bodies are installed separately in each space between the opposing inner and outer panel surfaces of the first and second upper frames, with a gap between them, and in which the inner panel surfaces of the first and second upper frames are configured as first and second inspection covers that can be opened and closed separately, the first inspection cover is provided with a restricting part that restricts the opening of the second inspection cover when the first inspection cover is closed, so that the second inspection cover cannot be opened until the opening step of the first inspection cover has been performed. [Effects of the Invention]

[0006] By adopting the invention of claim 1, the opening and closing mechanisms of the first and second door bodies, which are arranged with corner portions remaining, are installed in the corresponding first and second upper frames, and the inner panel surfaces of the first and second upper frames serve as first and second inspection covers that can be opened and closed separately, making it possible to perform maintenance on the corresponding opening and closing mechanisms by opening the first and second inspection covers. By adopting the invention of claim 2, when the first door body is the main thing that is opened and closed, the second inspection cover is restricted so that it cannot be opened unless the first inspection cover is opened, which makes it possible to avoid accidentally opening the second inspection cover when performing maintenance work on the opening and closing mechanism of the first door body, which is the main item of maintenance. By adopting the invention of claim 3, the regulating portion for regulating the opening of the second inspection cover is configured by the leading edge portion of the first inspection cover butting against the trailing edge portion of the second inspection cover, thereby making effective use of the first inspection cover as a regulating portion, allowing for the use of multiple components and simplifying the structure. By adopting the invention of claim 4, the leading edge of the first inspection cover faces the second inspection cover with a gap between them, which prevents the leading edge of the first inspection cover from rubbing against and damaging the second inspection cover when opening or closing the first inspection cover. By adopting the invention of claim 5, the door-leading edge portion of the second inspection cover is supported so as to be freely attached and detached via mounting hardware provided on the outer panel surface of the second upper frame, while the door-leading edge portion of the first inspection cover is supported so as to be freely attached and detached via mounting hardware provided on the second inspection cover.As a result, the door-leading edge portion of the first inspection cover butts against the door-tail side portion of the second inspection cover rather than the door-leading edge edge, forming the regulating portion of the second inspection cover, and the door-leading edge portion of the first inspection cover can be attached and detached using the second inspection cover, thereby simplifying the structure. By adopting the invention of claim 6, the opening and closing mechanisms of the first and second door bodies, which are arranged with corner portions remaining, are installed in the corresponding first and second upper frames, and the inner plate surface portions of the first and second upper frames serve as first and second inspection covers that can be opened and closed separately.When the first and second inspection covers are opened to perform maintenance on the corresponding opening and closing mechanisms, if the first door body is the main object to be opened and closed, the second inspection cover cannot be opened until the first inspection cover has been opened.As a result, it is possible to avoid accidentally opening the second inspection cover when performing maintenance work on the opening and closing mechanism of the first door body, which is the main object of maintenance. [Brief explanation of the drawings]

[0007] [Figure 1] FIG. [Figure 2] FIG. [Figure 3] FIG. [Figure 4] FIG. 10 is an outer side view of the second door body portion. [Figure 5] FIG. 10 is an inner side view of the second door body portion. [Figure 6] FIG. 2 is a plan view of the first and second door body portions. [Figure 7] A plan view of the first and second upper frame portions. [Figure 8] FIG. 10 is a rear view of the first door body with an inspection cover removed from the first opening / closing mechanism portion. [Figure 9] This is an enlarged rear view of the door-end side portion of the first opening / closing mechanism with the inspection cover removed. [Figure 10] FIG. 4 is a vertical cross-sectional side view of a door portion on the trailing edge side of the first door body. [Figure 11] FIG. 4 is a vertical cross-sectional side view of a door portion on the door leading side of the first door body. [Figure 12] FIG. 10 is an inner side view of the second door body with the inspection cover removed. [Figure 13] An enlarged inner side view of the door-end side portion of the second opening / closing mechanism with the inspection cover removed. [Figure 14] FIG. 4 is a vertical cross-sectional side view of the second door body. [Figure 15] (A)(B) is a vertical cross-sectional side view of the trailing edge portion of the first upper frame with the first inspection cover removed, and a side view of the leading edge portion. [Figure 16] (A), (B), and (C) are a plan view of the protruding piece of the first door frame, a longitudinal cross-sectional view of the [a]-[a] portion of (A), and a longitudinal cross-sectional view of the [b]-[b] portion. [Figure 17] FIG. 10 is a plan view showing the separated state before the first and second upper frames are assembled together. [Figure 18] This is a plan view showing the separated state of the first and second upper frames before they are assembled, with the upper plate surface portion omitted. [Figure 19] 10A and 10B are cross-sectional views of the [c]-[c] portion and the [d]-[d] portion of FIG. [Figure 20] An enlarged horizontal cross-sectional view of the lock receiving portion at the corner portion. DETAILED DESCRIPTION OF THE INVENTION

[0008] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the drawings, T denotes a toilet booth provided indoors (indoors) such as a private room in a hospital, and the toilet booth T is configured such that two sets of door bodies 1, 2, a first door body 1 on the front side and a second door body 2 on the side side, arranged at a right angle with a right-angle corner portion (corner portion) X as the door leading end, can be opened and closed separately, thereby allowing a first entrance / exit portion E1 on the front side and a second entrance / exit portion E2 on the side side to be opened and closed separately. In this embodiment, the first and second door bodies 1, 2 are arranged with a right-angle (90 degree) corner portion X, but the angle of the corner portion X is not limited to a right angle, and may be any appropriate angle such as 80 degrees, 100 degrees, 120 degrees, etc. It goes without saying that the present invention can be implemented as long as the first and second door bodies 1, 2 are arranged in a bent shape with a required angle other than a flat surface (180 degrees).

[0009] As embodiments of the present invention, a first embodiment will be described in which the first door body 1 is a double sliding door type and the second door body 2 is a single sliding door type, and a second embodiment will be described in which the first door body 1 is a double sliding door type and the second door body 2 is a single hinged door type. However, when each door body is a sliding door, there is no particular limit to the number of doors, and it goes without saying that the opening and closing method can be either a sliding door or a hinged door for the first and second door bodies 1 and 2. Incidentally, in this embodiment, the opening and closing direction of the first door body 1 is defined as the left-right direction, the opening and closing direction of the second door body 2 as the front-to-back direction, and the inside and outside of the booth of the toilet booth T as the inside (maintenance side) and outside, respectively. However, these definitions are provided for convenience to help understand the embodiment, and it goes without saying that the present invention is not limited to the orientations described in this embodiment.

[0010] First, as mentioned above, we will explain the case where the door device of the first embodiment, in which the first door body 1 is a double sliding door type and the second door body 2 is a single sliding door type, is installed as a partition board between the inside and outside of a toilet booth T in which a toilet bowl B is installed. The first door body 1 is opened and closed in the left-right direction so that the first entrance E1 can be used as the main entrance to allow access (normal access) to the inside and outside of the toilet booth T, and in the case of the main entrance, the second door body 2 keeps the second entrance E2 closed and is locked by a locking device such as a French trap door. On the other hand, when a wide entrance space is required to allow a person in a wheelchair to enter and exit, the first and second door bodies 1 and 2 can be opened together, so that both the first and second entrances E1 and E2 can be opened to allow access with a wide opening width, and these points are the same as in the second embodiment described below.

[0011] <Structure of first door body 1> The first door body 1 is a double-hung type having a trailing door section 3 and a leading door section 4, and the trailing door section 3 and the leading door section 4 have a so-called "nested joint" structure in which the leading door section 4 is fitted between the front and back panels 3a, 3a of the trailing door section 3 so that it can freely move in and out from the trailing door side.The first door body 1 having such a structure is configured to be able to open and close in the left and right direction by being guided along a main hanger rail (main suspension rail) 6 which is arranged to be fitted in the first upper frame 5. More specifically, an upper frame (upper stile) 3b is provided at the upper edge of the trailing-end door section 3 so as to extend toward the door tip, and a pair of left and right main hanger rollers (main suspension rollers) 7 are provided on both left and right edge portions of the upper frame 3b via brackets 7a extending upward. The main hanger rollers 7 are guided along the main hanger rail 6, thereby allowing the first door body 1 to open and close left and right.

[0012] Furthermore, a secondary hanger rail (secondary suspension rail) 8 is formed at the lower end of the upper frame 3b, and is arranged lower than the upper frame 3b. A pair of left and right secondary hanger rollers (secondary suspension rollers) 9, which are attached to the upper edge of the leading door section 4 via brackets 9a, are guided and allowed to roll freely in the left and right directions on the secondary hanger rail 8. With this configuration, the first door body 1 is configured so that the leading door section 4 is movable left and right relative to the trailing door section 3, and is configured to be able to change its shape between a closed position in which the leading door section 4 extends from the trailing door section 3 that has moved toward the leading end, and the two door sections 3, 4 are deployed in a continuous manner to close the first entranceway E1, and an open position in which the leading door section 4 moves toward the trailing door end while being immersed in the trailing door section 3 like a telescoping joint, and opens (opens) the first entranceway E1.

[0013] <Opening and closing structure of first door body 1> Next, we will explain the opening and closing mechanism K1 between the trailing door section 3 and the leading door section 4 in the first door body 1 configured as described above.The opening and closing mechanism K1 of the first door body 1 is installed inside the first upper frame 5. Pulleys 10a, 10b on the door trailing edge and door leading edge sides that rotate (pivot) around vertical shafts are provided on both left and right end edges of the upper frame 3b, and a connecting belt 10 is wound around the door trailing edge and door leading edge pulleys 10a, 10b. The connecting belt 10 is connected to a connecting fitting 10c provided on a bracket 9a that connects the door leading side auxiliary hanger roller 9 provided on the door leading side door section 4 to the door leading side door section 4. In addition, an automatic closing device 11 is installed in the door front end of the first upper frame 5, and a connecting wire 11a extending from the automatic closing device 11 is connected to a connecting fitting 10c provided on the door front side door section 4.

[0014] With this configuration, when the leading-side door section 4 of the first door body 1 is opened with the first entranceway E1 fully closed, the leading-side door section 4 moves in the opening direction as the auxiliary hanger roller 9 rolls on the auxiliary hanger rail 8. In this case, the leading-side door section 4 is connected to the upper frame 3b and the connecting belt 10 via the connecting fitting 10c, so that in conjunction with the opening operation of the leading-side door section 4, the trailing-side door section 3, which is integral with the upper frame 3b, moves in the opening direction, and the leading-side door section 4 moves in conjunction with the movement of the connecting belt 10 and fits into the trailing-side door section 3 relative to the trailing-side door section 3 that moves in the opening direction, and thus the first door body 1 is configured to move in an opening operation while the leading-side door section 4 fits into the trailing-side door section 3. Furthermore, the opening operation of this first door body 1 is an operation that involves the pulling out of the connecting wire 11a provided in the automatic closing device 11, and the opened first door body 1 is configured to perform an automatic closing operation (automatic closing operation) in a state that involves an operation opposite to the opening operation due to the automatic pulling back operation of the connecting wire 11a by the automatic closing device 11, thereby automatically closing the first entrance / exit section E1. In the drawing, reference numeral 12 denotes a door pocket of the first door body 1. Also, a door stop 10d is provided on the first upper frame 5 side, against which the leading edge of the upper frame 3b provided on the trailing door section 3 comes into contact when the first door body 1 is fully closed.

[0015] <Structure of second door body 2> On the other hand, the second door body 2 is composed of a single door body that moves back and forth to open and close the second entrance / exit section E2 on the side, and the second door body 2 is configured so that a pair of front-rear hanger rollers 13 provided on the upper edge are guided by a hanger rail 14 to move back and forth to open and close the second entrance / exit section E2, and the opening / closing mechanism K2 of the second door body 2 is housed within the second upper frame 15, which will be described later. In this case, the hanger rail 14 is provided at an angle with the door edge lowered, so that it closes automatically. The second door body 2 is provided with a French-type locking device 16 at the edge of the door leading end, and when no opening or closing operation is performed, the rod-type locking device 16 is kept in a locked state, so that opening or closing operation is not possible. The first and second door bodies 1, 2 configured in this manner are configured such that when closed, the door leading edge 4a of the door leading door portion 4 of the first door body 1 and the door leading edge 2a of the second door body 2 butt against each other (closely facing each other) in a stepped state (opposed state).By configuring them in this manner, even if the door leading edge portions 4a, 2a do not abut against each other (there is a gap) when the two door bodies 1, 2 are in a closed position, it is possible to prevent the inside of the toilet booth T from being seen from the outside. In the drawing, reference numeral 17 denotes a door pocket of the second door body 2, and 17a denotes a rod-lock type locking device provided at the door-front side of the second door body 2. A metal fitting 30 is provided on the second upper frame 15 side, which will be described later, and is formed with a locking portion 30a that locks the locking portion 17b of the locking device 17a in the locked state, and a door stop receiving portion 30b that a door stopper 2b provided at the upper edge of the door-front side of the second door body 2 abuts against when the second door body 2 is closed.

[0016] <Outline of the first and second upper frames 5 and 15> As described above, the first and second upper frames 5, 15 house the opening and closing mechanisms K1, K2 of the corresponding first and second door bodies 1, 2, and are therefore configured with upper plate portions 5a, 15a attached to the ceiling-side member (ceiling-side frame member) 18, inner plate portions 5b, 15b and outer plate portions 5c, 15c constituting the inner and outer surfaces of the upper frame of the toilet booth T, and lower plate portions 5d, 15d into which the upper ends of the first and second door bodies 1, 2 are loosely fitted. The first and second upper frames 5, 15 are configured in a box shape with the inner and outer plate portions 5b, 5c and 15b, 15c facing each other with an appropriate gap between them, and the opening and closing mechanisms K1, K2 of the first and second door bodies 1, 2 are housed in the first and second spaces S1, S2 enclosed by these. The first and second upper frames 5, 15 are configured so that the upper plate surfaces 5a, 15a, the lower plate surfaces 5d, 15d, and the protruding piece lower pieces 5q, 15q are all approximately flush with each other. Furthermore, the first door body 1 is loosely fitted into the gap between the lower plate surface 5d of the first upper frame 5 and a protruding piece lower piece 5q (described later), and the second door body 2 is loosely fitted into the gap between the lower plate surface 15d of the second upper frame 15 and a protruding piece lower piece 5q (described later), so that they can be opened and closed.

[0017] <Structure of first upper frame 5> As described above, the first upper frame 5 is composed of the upper plate surface portion 5a, the inner and outer plate surface portions 5b and 5c, and the lower plate surface portion 5d, and the upper plate surface portion 5a is composed of the upper inner plate piece 5e and the upper outer plate piece 5f, which are butted together from the inner and outer directions and integrated by fixing means such as welding or fastening. The upper inner plate piece 5e has its inner and outer end edges bent downward to form a support piece 5g, and the upper end edge 5h of the inner plate surface portion 5b is supported by the support piece 5g so that it can swing inward and outward and be detachable. As a result, the inner plate surface portion 5b forms a first inspection cover 5b that can be opened, closed, and detached from inside the toilet booth T, allowing maintenance of the first opening / closing mechanism K1 arranged in the first upper frame 5 from inside the toilet booth T. The lower inner plate piece 5i that constitutes the lower plate surface 5d is bent outward from the lower edge of the inner plate surface 5b that constitutes the first inspection cover, and is configured to be opened, closed, and attached / detached integrally with the inner plate surface 5b.

[0018] On the other hand, the outer plate surface portion 5c has a double-plate structure, and the outer plate piece 5j, which serves as the outer plate of the outer plate surface portion 5c, is bent downward from the outer edge of the upper outer plate piece 5f. In contrast, the inner plate piece 5k, which serves as the inner plate of the outer plate surface portion 5c, is provided with a gap relative to the outer plate piece 5j, but the upper edge of the inner plate piece 5k is bent back outward and abuts against the corner surface between the upper outer plate piece 5f and the outer plate piece 5j, thereby providing reinforcement. In contrast, the lower edge of the inner plate piece 5k is welded to the upper end of a U-shaped lower inner plate material 5l that opens to the outside, and a bent piece 5m that is bent inward from the lower edge of the outer plate piece 5j is stacked (overlapping) from the bottom to the lower leg piece of the lower inner plate material 5l.

[0019] Furthermore, a protruding piece 5n is provided at the lower edge of the outer plate surface portion 5c, projecting outward in a canopy-like manner beyond the outer plate piece 5j of the outer plate surface portion 5c. The protruding piece 5n includes an inner piece 5p fixed to the lower end of the lower inner plate member 5l with a screw 5o. A lower piece 5q is bent outward from the lower edge of the inner piece 5p. The lower piece 5q extends outward, overlapping with a bent piece 5m formed by bending the lower edge of the outer plate piece 5j from below. An inverted L-shaped upright piece 5r is bent upward from the extending edge of the lower piece 5q, thus reinforcing the lower portion of the outer plate surface portion 5c. A gap M is provided between the leading edge of the upright piece 5r and the outer plate piece 5j. In this case, the inner piece 5p formed on the inner edge portion of the protruding piece portion 5n and the outer piece 5u formed upright on the outer edge portion of the lower inner plate piece portion 5i of the inner plate surface portion 5b are configured to face each other with the arrangement space for the first door body 1 remaining. In this case, the main hanger rail 6 is fastened to the inner plate piece portion 5k via a screw 6a.

[0020] Furthermore, as a result of the first door body 1 having a double telescopic joint structure as described above, the distance between the inner and outer inner pieces 5p of the first upper frame protruding piece 5n is wide corresponding to the trailing edge door section 3 and narrow corresponding to the leading edge door section 4. In other words, in the protruding piece 5n, the distance between the inner piece 5p and the standing piece 5r is narrow in the trailing edge door section 3 area and wide in the leading edge door section 4 area, and a square-shaped reinforcing metal fitting 5z is provided in this wider part on the leading edge side, so that the leading edge part of the first upper frame 5 is reinforced effectively by making the leading edge part of the protruding piece 5n wider. In addition, a mullion 5y is provided at the end edge of the first upper frame 5 on the door trailing side.

[0021] <Structure of the second upper frame> On the other hand, as for the second upper frame 15, as mentioned above, the second upper frame 15 is also composed of an upper plate surface portion 15a, inner and outer plate surface portions 15b and 15c, and a lower plate surface portion 15d, and basically has almost the same structure as the first upper frame 5.Therefore, a detailed explanation thereof will be omitted as the detailed explanation of the first upper frame 5 will be used instead, and the names and symbols of each part from "15e" to "15r" will correspond to the names and symbols of each part from "5e" to "5r" of the first upper frame 5. Incidentally, in the second upper frame 15 of this embodiment, as in the case of the first upper frame 5, the inner panel portion 15b forms a second inspection cover 15b that can be opened, closed, and attached and detached from inside the toilet booth T, and is configured so that maintenance of the second opening and closing mechanism K2 arranged within the second upper frame 15 can be performed from the inside of the toilet booth T. In this case, the main structural differences between the second upper frame 15 and the first upper frame 5 are that the inner plate piece 5k constituting the outer plate surface portion 5c of the first upper frame 5 is formed from two members with a lower inner plate material 5l at the lower end and is reinforced, whereas the second upper frame 15 does not have anything equivalent to the lower inner plate material 5l and is made up of only the inner plate piece 15k from a single member, and that the second door body 2 is made up of a single door portion, so the lower pieces 15q of the protruding piece portion 15n are the same width. In addition, the protruding piece portion 15n formed on the second upper frame 15 also has an inverted L-shaped upright piece 15r, and similar to the first upper frame 5, a gap M is provided between the tip edge of the upright piece 15r and the opposing outer plate piece portion 15j. Furthermore, an inner piece 15p formed on the inner edge of the protruding piece portion 15n and an outer piece 15v formed upright on the outer edge of the lower inner plate piece portion 15i of the inner plate surface portion 15b are configured to face each other with space for arranging the second door body 2 remaining. The second upper frame 15 has a hanger rail 14 fastened to an inner plate portion 15k via a screw 14a. A mullion 15y is provided at the end edge of the second upper frame 15 on the tail side.

[0022] <Connection structure between the first and second upper frames> Next, we will explain the connection structure at the corner portion X of the first upper frame 5 and the second upper frame 15. In this embodiment, an extension portion 15s extending toward the door leading edge is formed at the door leading edge portion of the second upper frame 15, and the door leading edge portion 5s of the first upper frame 5 is butted against this extension portion 15s, and the opposing portions 15s, 5s are connected to each other via screws 19 that serve as fasteners.

[0023] Specifically, an extension portion 15s is formed extending toward the door edge at the door edge side edge of the second upper frame 15, and the extension portion 15s is made up of an outer plate portion extension portion 15js from which the outer plate portion 15j extends, an inner plate portion extension portion 15ks from which the inner plate portion 15k extends, and a protruding piece portion extension portion 15ns from which the protruding piece portion 15n extends. In this case, the outer panel extension 15js extends to the portion corresponding to the outer panel 5j of the first upper frame 5, so that when the first and second upper frames 5, 15 are butted against each other, the outer panel extension 15js and the door-leading edge 5ks of the outer panel 5j face each other in an butted state, and the outer panel extension 15js becomes a covering surface that covers the opening door-leading edge of the first upper frame 5, resulting in a connected structure in which the outer surface of the corner portion X (the outer surface of the toilet booth T) forms an butted corner bent at a 90-degree angle by the door-leading portion of the outer panel 5j and the outer panel extension 15js, creating a covered connection structure.

[0024] In contrast, the inner plate extension 15ks extends to the inner surface of the inner plate portion 5k of the first upper frame 5. As a result, when the first and second upper frames 5, 15 are butted against each other as described above, the leading edge 5ks of the first upper frame inner plate portion (including the lower inner plate member 5l) 5k butts against the outer plate extension 15js without being obstructed by the inner plate extension 15ks. Moreover, a connecting fitting 5t is provided so as to be positioned at the leading edge of the leading edge 5ks of the first upper frame inner plate portion 5k. A plurality of screw holes 19a are formed in the vertical direction in the door-leading side portion of the outer panel extension 15js, and the door-leading side edge 5ks of the inner panel portion of the opposing first upper frame 5 and the outer panel extension 15js are screwed into the connecting fitting 5t via screws 19 inserted into the connecting fitting 5t from the screw hole 19a side of the outer panel extension 15js, thereby enabling the door-leading side edge portions of the first and second upper frames 5, 15 to be integrally connected to each other. This configuration makes it possible to connect the door-leading side edge portions of the first and second upper frames 5, 15 to each other without the door-leading side vertical frame being present.

[0025] In this case, furthermore, in this embodiment, the extension portion 15ns of the protruding piece portion 15n is formed so that the inner piece extension portion 15ps extending toward the door edge of the inner piece 15p extends beyond the extension portion 15js of the outer plate piece portion 15j to the outer surface portion of the first upper frame protruding piece portion 5n, but the extended end edge is covered by a covering plate 15u. When the first and second upper frames 5, 15 are butted against each other, the door-edge side edge portion 5ns of the first upper frame protruding piece 5n is configured to butt against the inner piece extension portion 15ps of the protruding piece extension portion 15ns, and the covering plate 15u which forms the extending edge of the second upper frame protruding piece extension portion 15ns and the standing piece 5r of the first upper frame protruding piece 5n are configured to be continuous and approximately flush, although in this embodiment the covering plate 15u protrudes slightly beyond the standing piece 5r. Furthermore, when the first and second upper frames 5, 15 are connected together, the door-leading edge portion of the lower inner plate portion 5i of the first upper frame 5 abuts against and faces the inner plate surface portion 15b of the second upper frame 15, and in this case, the outer piece 5u formed on the lower inner plate portion 5i of the first upper frame 5 and the door-leading edge 15is of the lower inner plate portion 15i of the second upper frame 15 are configured to be connected (continuous) in an approximately flush manner.

[0026] On the other hand, the first and second upper frames 5, 15 are configured so that the upper plate surface portions 5a, 15a are connected to each other at the corner portions X so as to be flush with each other. Specifically, the door-leading edge portion 5as of the first upper frame upper panel surface portion 5a faces the upper edge portion 15js of the outer panel portion extension portion 15js of the second upper frame extension portion 15s in an abutting manner, while the door-leading edge portion 15as of the second upper frame upper panel surface portion 15a faces the inner edge of the first upper frame upper panel surface portion 5a in an abutting manner, so that the upper panel surfaces 5a, 15a are connected to each other in an approximately flush manner at the corner portion X. Furthermore, such a substantially flush connection is also achieved between the upper surfaces of the upright pieces 5r, 15r of the protruding piece portions 5n, 15n. As a result of the leading edge portions of the first and second upper frames 5, 15 being connected facing each other in this manner, the corner portion X on the leading edge side of the upper frame of the door device is connected in a triangular corner surface where the leading edge portion of the upper panel surface portion 5a of the first upper frame is the upper panel surface, the outer panel portion extension 15js of the second upper frame 15 is the panel surface on the second upper frame 15 side, and the leading edge portion of the outer panel portion 5j of the first upper frame 5 is the panel surface on the first upper frame 5 side.

[0027] When assembling the first and second upper frames 5, 15 configured in this manner on-site, the assembling method is as follows: with the first and second inspection covers 5b, 15b removed, A process of arranging the first and second upper frames 5, 15 so that the extension portion 15s of the second upper frame 15 faces the door-leading edge portion 5s of the first upper frame 5 in an abutting manner; a step of fastening the extension 15s of the second upper frame 15 and the connecting fitting 5t provided on the door-front side edge 5ks of the inner plate piece portion of the first upper frame 5 in the state where they are arranged facing each other in a butting manner, using a screw 19 inserted from the extension side; By carrying out these steps in sequence, the door-front portions of the first and second upper frames 5, 15 can be connected even when the door-front vertical frame is not present, and then the first and second inspection covers 5b, 15b can be attached to connect and assemble the first and second upper frames 5, 15. In this case, the first and second upper frames 5, 15 can be temporarily attached to the ceiling side member 18, which is a body side member, for example.

[0028] <Inspection cover configuration> As described above, in this embodiment, the first and second upper frames 5, 15 have the first and second opening / closing mechanisms K1, K2 installed in the first and second spaces S1, S2 formed between the inner and outer panel surfaces 5b, 5c and 15b, 15c of the first and second upper frames 5, 15. For this reason, the inner panel surfaces 5b, 15b of the first and second upper frames 5, 15 are configured as first and second inspection covers 5b, 15b that can be opened, closed, and attached / detached. However, in this embodiment, the first door body 1 is a door body that is always open and closed, a double-barreled door body is used, and it is also equipped with a self-closing device 11. Therefore, the first opening / closing mechanism K1 requires more frequent maintenance than the second opening / closing mechanism K2, which is not of this type. Therefore, when the inner panel surfaces 5b, 15b of the first and second upper frames 5, 15 are configured as the first and second inspection covers 5b, 15b, the following considerations have been taken into account. Incidentally, as mentioned above, the first and second inspection covers 5b, 15b have their upper edge portions 5h, 15h attached to the support piece portions 5g, 15g formed on the upper plate surface portions 5a, 15a so that they can be freely opened, closed, pivoted, and detached.

[0029] In this case, the second inspection cover 15b is detachably attached to the tip of the second mounting bracket 20, 20a, whose base ends are attached to the door-leading side portion of the inner panel portion 15k of the second upper frame 15 and the upright 15y, via detachable screws 20b, 20c. In contrast, the leading edge of the first inspection cover 5b is closer to the trailing edge of the second inspection cover 15b than the leading edge of the second inspection cover 15b, so that the second inspection cover 15b cannot be removed unless the first inspection cover 5b is removed, thereby forming a restricting section.Furthermore, there is a gap Y between the leading edge of the first inspection cover 5b and the trailing edge side of the second inspection cover 15b, so that when opening or closing the first inspection cover 5b, the leading edge of the first inspection cover 5b will not come into contact with and damage the second inspection cover 15b, which is avoided.

[0030] The first inspection cover 5b is configured so that its trailing edge can be attached and detached via a detachable screw 21a to a first trailing edge mounting bracket 21 attached to the upright 5y on the first door body 1 side, while its leading edge can be detachably attached via a detachable screw 22a to a first leading edge mounting bracket 22 provided on the leading edge portion of the second inspection cover 15b.In this way, the first inspection cover 5b can be attached using the second inspection cover 15b in a door frame that does not have a leading edge vertical frame. As described above, the first inspection cover 5b constitutes a restricting portion that restricts the opening of the second inspection cover 15b, and the lower edge portion of the trailing edge side of the first inspection cover 5b is detachably attached via a removable screw 21a to the tip of a first trailing edge side mounting bracket 21, the base end of which is attached to the mullion 5y of the first upper frame 5. The lower edge portion of the leading edge side is detachably attached via a removable screw 22a to the tip of a first leading edge side mounting bracket 22, the base end of which is attached to the leading edge side portion of the second inspection cover 15b. Furthermore, the shape of the mounting brackets 20, 20a, 21, and 22 for attaching and detaching these inspection covers 5b and 15b can be any appropriate shape as needed, such as a hat-shaped cross section, Z-shaped, or L-shaped, and is not limited to the shape of this embodiment (the same applies to the second embodiment described below).

[0031] <Lock structure of first door body 1> Furthermore, the first door body 1 is provided with a French drop type (rod lock type) locking device 16 at the door end portion, in this case the locking device 16 is configured so that the rod 16a extends and retracts upward, and the lock is achieved by the lock receiving portion 23 provided on the upper frame side having a locking portion 16b at the tip of the rod which can be freely engaged and disengaged, and the lock receiving portion 23 is assembled to a fixing bracket 23b attached to the inner plate portion 5k which is a component of the outer plate surface portion 5c of the first upper frame 5.

[0032] As described above, when the first door body 1 and the second door body 2 are closed, the door-leading edge portion 4a of the door-leading door section 4 of the first door body and the door-leading edge portion 2a of the second door body 2 face each other at the corner portion X and are closed. For this reason, it is preferable to arrange the lock receiving portion 23 in the corner space S3 between the first upper frame 5 side portion of the second upper frame extension portion 15s and the door-front side portion of the first upper frame 5 on the extension line H of the second inspection cover 15b, so as to correspond to the door-front side end portion of the door-front side 4 in the closed state. Therefore, in this embodiment, the lock receiving portion 23 is configured so that it can be attached with the first and second inspection covers 5b, 15b removed. In other words, in this case, the lock receiving portion 23 is attached to the lower inner plate material 5l of the inner plate piece within the corner space S3 via a screw 23a, and by doing so, it is possible to make it shorter and smaller than the lock receiving portion 27 of the second embodiment described below.

[0033] In the present embodiment configured as described above, the first and second opening / closing mechanisms K1, K2 corresponding to the first and second door bodies 1, 2, which are arranged with corner portions at 90-degree angles, are installed inside the corresponding first and second upper frames 5, 15. In this case, the inner panel portions 5b, 15b of the first and second upper frames 5, 15 serve as first and second inspection covers that can be opened and closed separately, so that maintenance of the corresponding first and second opening / closing mechanisms K1, K2 can be reliably performed by opening the first and second inspection covers, which are the inner panel portions 5b, 15b.

[0034] Furthermore, in this case, when the first door body 1 is the main object to be opened and closed, the second inspection cover 15b is restricted so that it cannot be opened unless the first inspection cover 5b is also opened. As a result, when performing maintenance work on the opening and closing mechanism K1 of the first door body 1, which is the main maintenance object, it is possible to avoid accidentally opening the second inspection cover 15b, thereby improving workability. The regulating section for regulating the opening of the second inspection cover 15b is constructed by butting and facing the leading edge of the first inspection cover 5b against the trailing edge of the second inspection cover 15b, which results in the first inspection cover 5b being effectively used as a regulating section for regulating the opening of the second inspection cover 15b, allowing the same components to be used for multiple purposes and simplifying the structure. In this way, when the first inspection cover 5b is used as a regulating part that regulates the opening of the second inspection cover 15b, the door-edge side edge of the first inspection cover 5b faces the second inspection cover 15b with a gap Y, which prevents the door-edge side edge of the first inspection cover 5b from rubbing against and damaging the second inspection cover 15b when opening or closing the first inspection cover 5b.

[0035] Furthermore, in this structure, the second inspection cover 15b has its door-leading edge portion detachably supported via a mounting bracket 20 provided on the inner plate portion 15k of the second upper frame outer plate surface portion 15c, via a detachable screw 20b, while the door-leading edge portion of the first inspection cover 5b is detachably supported via a mounting bracket 22 provided on the door-leading side of the second inspection cover 15b, via a detachable screw 22a.As a result, in a structure in which the door-leading edge portion of the first inspection cover 5b butts against the door-leading edge at a position closer to the tail end than the door-leading edge of the second inspection cover 15b, thereby forming a regulating portion of the second inspection cover 15b, the door-leading side portion of the first inspection cover 5b can be attached and detached by effectively utilizing the second inspection cover 15b in structures in which there is no door-leading side vertical frame, thereby simplifying the structure.

[0036] In this manner, in this embodiment, the first and second opening / closing mechanisms K1, K2 of the first and second door bodies 1, 2, which are arranged with the corner portions X remaining, are fitted inside the corresponding first and second upper frames 5, 15, and the inner panel surfaces 5b, 15b of the first and second upper frames 5, 15 form first and second inspection covers that can be opened and closed separately. When the first and second inspection covers 5b, 15b are opened for maintenance of the corresponding first and second opening / closing mechanisms K1, K2, if the door body that is primarily opened and closed for access is the first door body 1, the second inspection cover 15b cannot be opened until after the first inspection cover 5b has been opened. As a result, it is possible to avoid accidentally opening the second inspection cover 15b when performing maintenance work on the first opening / closing mechanism K1 of the first door body 1, which is the main maintenance work. [Industrial Applicability]

[0037] The present invention can be used as a door frame structure and a method for opening an inspection cover of a door frame in a door device in which two sets of door bodies that open and close an entrance / exit section are arranged side by side, for example, butted together at a right-angle (90-degree) corner. [Explanation of symbols]

[0038] 1 First door body 2 Second door body 5 First upper frame 5a Upper plate surface part 5b Inner plate surface part 5c Outer plate surface part 5ks: Door edge of inner panel 5n Projecting piece 5s Door edge 5t connecting fittings 15 Second upper frame 15a Upper plate surface part 15b Inner plate surface part 15c Outer plate surface part 15n protruding piece 15s extension part 15as Upper panel edge on the door tip side 15js Extended part of outer plate part 15ks Inner plate extension 16 Locking Device 16b Locking part 19 Bis 20 Mounting hardware 20a Detachable Screw 22 Mounting hardware 22a Detachable screw 23 Lock receiving part E1 First entrance / exit E2 Second entrance / exit H Extension line of second inspection cover K1 First opening / closing mechanism K2 Second opening / closing mechanism X corner part Y Inspection cover gap

Claims

1. The first and second sets of door bodies are arranged side by side with a predetermined angle therebetween, and the door leading edge portions of the first and second door bodies are arranged to form corner portions; In the door frame of the door device, the door leading edge portions of the first and second upper frames corresponding to the first and second door bodies are opposed to each other in a butt-like manner, and the opposed portions are connected to each other, thereby eliminating the door leading vertical frame at the corner portion, and the opening and closing mechanisms of the first and second door bodies are separately installed in each space between the inner and outer plate surface portions opposed to each other with a gap between the inside and outside of the first and second upper frames. A door frame structure for a door device, characterized in that the inner plate surface portions of the first and second upper frames are configured as first and second inspection covers that can be opened and closed separately.

2. 2. The door frame structure in a door device according to claim 1, wherein the first inspection cover is provided with a restricting portion that restricts the opening of the second inspection cover when the first inspection cover is in a closed state.

3. The door frame structure in the door device described in claim 2, characterized in that the restricting portion that restricts the opening of the second inspection cover is configured so that the leading edge portion of the first inspection cover abuts and faces the trailing edge portion of the second inspection cover closer to the trailing edge than the leading edge portion of the second inspection cover.

4. 4. The door frame structure in a door device according to claim 3, wherein the door-front edge of the first inspection cover faces the second inspection cover with a gap therebetween.

5. The door-end side edge portion of the second inspection cover is detachably supported via a mounting bracket provided on the second upper frame outer plate surface portion, 5. A door frame structure in a door device according to claim 1, wherein the door leading edge of the first inspection cover is detachably supported via a mounting bracket provided on the second inspection cover.

6. The first and second sets of door bodies are arranged side by side with a predetermined angle therebetween, and the door leading edge portions of the first and second door bodies are arranged to form corner portions; In the door frame of the door device, the door leading edge portions of the first and second upper frames corresponding to the first and second door bodies are opposed to each other in a butt-like manner, and the opposed portions are connected to each other, thereby eliminating the door leading vertical frame at the corner portion, and the opening and closing mechanisms of the first and second door bodies are separately installed in each space between the inner and outer plate surface portions opposed to each other with a gap between the inside and outside of the first and second upper frames. When the inner plate surface portions of the first and second upper frames are configured as first and second inspection covers that can be opened and closed separately, the first inspection cover is provided with a restricting portion that restricts the opening of the second inspection cover when the first inspection cover is in a closed state, A method for opening an inspection cover of a door frame in a door device, characterized in that the second inspection cover cannot be opened until the opening process of the first inspection cover has been performed.

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