Door device

Abstract

To provide a door device with a door frame having no vertical frame on the door end side in which a first upper frame 5 and a second upper frame 15 of a door device with the door tip side edges of a first door body 1 and a second door body 2 forming a 90-degree corner part by arranging a door tip side edge 5 s of the first upper frame 5 abuts against an extension part 15s formed by extending from the door tip side edge of the second upper frame 15 to provide a lock receiver 23 that is locked by a locking portion 16b of a locking device 16 provided at the end of the door end of the first door body 1 in a retractable manner.SOLUTION: In a door device, a lock receiver 23 is provided to the door edge side of a corner part X of a first upper frame 5. With this, the lock receiver 23 can be reliably installed even when the door frame has no vertical frame on the door end side.SELECTED DRAWING: Figure 32

Description

[Technical Field]

[0001] The present invention relates to the technical field of a door device in which two pairs of door bodies that open and close an entrance are arranged side by side, for example, at a right angle (90 degrees) in a butted state (butted together, bent state). [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 at a corner that has a predetermined (appropriate) angle, such as a right angle, and when the two sets of door bodies are closed, their leading edge portions butt against each other at the corner (angle). 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). [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] In the conventional door devices described above, it is necessary to provide a locking device on the leading edge of the main door body. When a locking device is provided in this manner, a lock receiving portion must be provided in the corner portion so that the locking portion on the locking device can freely appear and disappear when the locking operation is performed to lock the door. However, there is a problem that none of the above patent documents provide any suggestion as to how to provide this lock receiving portion in the corner portion, and these are the issues that the present invention must solve. [Means for solving the problem]

[0005] The present invention was created in view of the above-mentioned circumstances and with the aim of solving these problems. The invention of claim 1 is a door device in which two sets of door bodies, a first and a second, are arranged side by side with a corner portion at a predetermined angle, the door frame of the door device is configured as a door frame without a vertical door-end frame by having the door-end side edge portion of the first upper frame butt up against an extension formed on the door-end side edge portion of the second upper frame, and a lock receiving portion is provided in the door frame to freely protrude and retract to engage and lock the locking portion of the locking device provided on the door-end side end of the first door body, the lock receiving portion being provided in the door frame at the door-end side portion of the first upper frame. The invention of claim 2 is a door device as described in claim 1, characterized in that the first and second upper frames have inner and outer panel surface portions that face each other with a gap between them, and the lock receiving portion is attached to the door-leading portion of the outer panel surface of the first upper frame in a state where it is arranged between the door-leading edge portion of the first upper frame and the portion on the extension line of the inner panel surface of the second upper frame. The invention of claim 3 is a door device as described in claim 2, characterized in that the opening and closing mechanisms of the first and second door bodies are installed in the space between the inner and outer panel surfaces of the first and second upper frames, and when both the first and second door bodies are sliding doors and the inner panel surfaces of the first and second upper frames are both inspection covers that can be opened and closed freely, the lock receiving portion is attached to the outer panel surface of the first upper frame between the door-edge side edge portion of the first upper frame and the extension portion of the inner panel surface of the second upper frame, and is configured to be able to be attached and detached when the inner panel surface that serves as the inspection cover of the second upper frame is open. The invention of claim 4 is the door device described in claim 2, characterized in that when the first door body is a sliding door and the second door body is a hinged door, the inner panel surface of the first upper frame is an inspection cover for the opening and closing mechanism of the first door body that is installed in the space between the inner and outer panel surfaces of the first upper frame and is configured to be able to be opened and closed freely, and the inner panel surface of the second upper frame is fixed, the lock receiving portion is attached to the outer panel surface of the first upper frame between the door-tip side edge portion of the first upper frame and a portion on the extension line of the inner panel surface of the second upper frame, and is configured to be able to be attached and detached when the inner panel surface that serves as the inspection cover on the first upper frame side is open. The invention of claim 5 is the door device of claim 4, characterized in that the lower plate surface portions of the first and second upper frames are set to be approximately flush with each other, and a door stop portion of the second door body, which is a hinged door, is formed to hang down from the lower plate surface portion of the second upper frame. The invention of claim 6 is the door device according to claim 5, characterized in that the door stop portion formed on the second upper frame is provided with a cushioning material that abuts against the closed second door body. [Effects of the Invention]

[0006] By adopting the invention of claim 1, the door frame of the door device is arranged so that the leading edge portions of the first and second door bodies form a corner portion at a predetermined angle, and the leading edge portion of the first upper frame is opposed to the extending portion formed on the leading edge portion of the second upper frame in an abutting manner, thereby forming a door frame without a leading vertical frame, and in this door frame, the lock receiving portion that engages and locks the locking portion of the locking device provided on the leading end of the first door body so that it can be freely projected and retracted is provided on the leading side of the first upper frame, and as a result, the locking device provided on the first door body can be installed naturally in the corner portion, thereby simplifying the structure. By adopting the invention of claim 2, when the first and second upper frames have inner and outer panel surfaces that face each other with a gap between them, the lock receiving portion is attached to the door-edge side portion of the outer panel surface of the first upper frame, in a state where it is arranged between the door-edge side edge portion of the first upper frame and the extension line portion of the inner panel surface of the second upper frame.As a result, the locking device provided on the first door body can be installed naturally in the corner portion, thereby simplifying the structure. By adopting the invention of claim 3, the opening and closing mechanisms of the first and second door bodies are installed in the space between the inner and outer panel surfaces of the first and second upper frames, and when the first and second door bodies are both sliding doors and the inner panel surfaces of the first and second upper frames are both inspection covers that can be opened and closed freely, the lock receiving portion is attached to the outer panel surface of the first upper frame between the door-edge side edge portion of the first upper frame and the extension line portion of the inner panel surface of the second upper frame, and is configured so that it can be attached and detached when the inner panel surface that forms the inspection cover of the second upper frame is open.As a result, the lock receiving portion can be attached compactly near the portion where the locking device's engaging portion appears and disappears. By adopting the invention of claim 4, the opening and closing mechanisms of the first and second door bodies are installed in the space between the inner and outer panel surfaces of the first and second upper frames, the first door body is a sliding door and the second door body is a hinged door, the inner panel surface of the first upper frame is an inspection cover for the opening and closing mechanism of the first door body installed in the space between the inner and outer panel surfaces of the first upper frame and is configured to be openable and closable, and the inner panel surface of the second upper frame is fixed, in which case the lock receiving portion is attached to the outer panel surface of the first upper frame between the door-leading edge portion of the first upper frame and the portion on the extension line of the inner panel surface of the second upper frame, and is configured so that it can be attached and detached when the inner panel surface that serves as the inspection cover on the first upper frame side is open.As a result, the lock receiving portion can be easily attached even if the inner panel surface of the second upper frame is fixed and cannot be opened. By adopting the invention of claim 5, when the second door body is a hinged door, the doorstop portion of the second door body is formed hanging down from the lower plate surface portion of the second upper frame where the lower plate surface portions of the first and second upper frames are set to be approximately on the same plane, so that even if there is no vertical frame on the door front side, the doorstop can be reliably achieved when the second door body is closed. By adopting the invention of claim 6, the door stop portion formed on the second upper frame is provided with a cushioning material that abuts against the closed second door body, and in cases where there is no vertical frame on the door end side, the cushioning material can be attached by effectively utilizing the second upper frame. [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. [Figure 21] The following figures show a second embodiment and are perspective views of the door device. [Figure 22] FIG. [Figure 23] FIG. 10 is an outer side view of the second door body portion. [Figure 24] FIG. 10 is an inner side view of the second door body portion. [Figure 25] FIG. 2 is a plan view of the first and second door body portions. [Figure 26] A planar cross-sectional view of the first and second upper frame portions. [Figure 27] This is an enlarged rear view of the door-end side portion of the first opening / closing mechanism with the inspection cover removed. [Figure 28] An enlarged side view of the second upper frame portion with the first opening and closing mechanism omitted. [Figure 29] A vertical cross-sectional view of the second upper frame portion. [Figure 30] FIG. 10 is a plan view showing the separated state before the first and second upper frames are assembled together. [Figure 31] 10A and 10B are horizontal cross-sectional views of the protruding piece portion at the corner portion and the inspection cover attachment portion. [Figure 32] 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 Embodiment 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 being 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 projecting 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 door bodies 1, 2 are arranged so that their leading edge portions form a 90-degree corner X, and the leading edge portion 5s of the first upper frame 5 of the first and second upper frames 5, 15 corresponding to the first and second door bodies 1, 2 is butted against the extending portion 15s formed on the leading edge portion of the second upper frame 15, thereby forming a door frame without a leading vertical frame. In this door frame, the lock receiving portion 23 that engages and locks the locking portion 16b of the locking device 16 provided at the leading end of the first door body 1 so as to be able to freely protrude and retract is arranged at the leading side, and as a result, the lock receiving portion 23 can be reliably provided even in a door frame without a leading vertical frame.

[0034] In this case, if the first and second upper frames 5, 15 have inner and outer panel surface portions 5b, 5c, 15b, 15c facing each other with a gap between them and have first and second spaces S1, S2 to house the first and second opening and closing mechanisms K1, K2, the lock receiving portion 23 is attached to the door-edge side portion of the first upper frame outer panel surface portion 5c in a state where it is arranged in the corner space S3 between the door-edge side edge portion 5s of the first upper frame 5 and the portion on the extension line H of the second upper frame inner panel surface portion 15b, and as a result, the lock receiving portion 23 can be securely attached to the corner space S3 even in a door frame that does not have a door-edge side vertical frame. Moreover, in this case, the inner plate surface portions 5b, 15b of the first and second upper frames 5, 15 both serve as first and second inspection covers that can be opened and closed freely.In this case, the lock receiving portion 23 is attached to the outer plate surface portion 15c of the first upper frame in the corner space S3 between the door-end side edge portion 5s of the first upper frame 5 and the portion on the extension line H of the inner plate surface portion 15b of the second upper frame.As a result, the lock receiving portion 23 is configured so that it can be attached and detached when the inner plate surface portion 15b, which serves as the inspection cover for the second upper frame 15, is open, and the lock receiving portion 23 is attached in a compact manner near the portion where the engaging portion 16b of the locking device 16 appears and disappears.

[0035] <Second embodiment> Next, a second embodiment of the present invention will be described with reference to Figure 21 and subsequent drawings. In this embodiment, the first door body 1 is a double sliding door, similar to that of the first embodiment, and therefore the details thereof will be directly incorporated from the description of the first embodiment. In contrast, the second door body 24 is a swing door type in which the trailing edge portion is pivotally supported on the upright 15y via a hinge (pivot support) 24a so as to be able to be opened and closed freely, and when the second door body 24 is closed, the leading edge portion 24b of the second door body 24 is butted against (closely opposed to) the leading edge portion 4a of the leading door section 4 in a stepped (opposed) state.By configuring it in this way, when the two door bodies 1, 24 are in the closed position, it is ensured that the inside of the toilet booth T cannot be seen from the outside even if the leading edge portions 4a, 24b do not abut (there is a gap) against each other. The second upper frame 25 is similar to that of the first embodiment in that it is constructed using an upper plate surface portion 25a, an inner plate surface portion 25b, an outer plate surface portion 25c, and a lower plate surface portion 25d, but since the second door body 24 is a hinged door, it does not have a second opening and closing mechanism K2 like the second door body 2 of the first embodiment, which is a sliding door, and therefore the inner plate surface portion 25b is fixed and cannot be opened or closed, which is different from that of the first embodiment.

[0036] In this embodiment, too, the first upper frame lower plate surface portion 5d and the second upper frame lower plate surface portion 25d are formed to be approximately flush, and the lower piece 5q of the first upper frame protruding piece 5n and the lower piece 25q of the second upper frame protruding piece 25n, which abut and face each other at a 90-degree angle, are also approximately flush, as in the first embodiment. In this embodiment, the second upper frame 25 has a mounting bracket 22 attached to the lower part of the inner plate surface 25b for attaching and detaching the door-leading end of the first inspection cover 5b, which is the inner plate surface of the first upper frame 5, via an attachment / detachment screw 22a. The attachment / detachment structure for the door-trailing end portion of the first inspection cover 5b is the same as that of the first embodiment, so a detailed explanation will be omitted. Similarly to the first embodiment, a rod-type locking device 17a is also provided to lock the second door body 24 in the closed state. The locking portion 17b of the locking device 17a is configured to freely appear and disappear in a locking hole 25w provided in a lower piece 25q of the protruding piece 25n, thereby achieving locking.

[0037] Furthermore, because the second door body 24 is a hinged door, the lower plate surface portion 25d of the second upper frame 25 must have a mating structure so that it fits in and acts as a doorstop when the second door body 24 is in the closed position. Therefore, the doorstop portion 25z of the second door body 24 is formed to hang down from the lower plate surface portion 25d of the second upper frame, so that when the second door body 24 is closed and there is no vertical door frame on the door-end side, the doorstop acts as a doorstop when the second door body 24 is in the closed position. To eliminate impact in this case, the doorstop portion 25z is provided with a cushioning material 26 made of a rubber elastic material, which is configured to absorb impact and prevent impact noise when the second door body 24 hits the doorstop portion 25z when closed.

[0038] In this case, as in the first embodiment, the first upper frame 5 and the second upper frame 25 are connected together by fastening them together using fastening devices such as screws 28 with the door edge portions facing each other in a butt-like manner, thereby maintaining the corner portion X. Specifically, the second upper frame 25 also has an extension portion 25s formed extending toward the door edge, and the door edge side edge portion 5s of the first upper frame 5 is opposed to this extension portion 25s in an abutting manner, and the connecting fitting 5t provided on the door edge side edge portion 5ks of the door edge side edge portion of the outer panel surface portion 5c of the second upper frame is fastened to the second upper frame outer panel surface portion extension portion 25cs via a screw 28 inserted through a screw hole 28a provided in the second upper frame outer panel surface portion extension portion 25cs, thereby connecting the tip edges of the first and second upper frames 5, 25 to each other. More specifically, the second upper frame extension portion 25s has a protruding piece portion 25n formed at the lower end portion of the outer panel surface portion 25c, as in the first embodiment, but the protruding piece portion 25n has a protruding piece portion extension portion 25ns extending toward the door edge formed thereon, together with an extension portion 25cs extending toward the door edge of the outer panel surface portion 25c.

[0039] When the first and second upper frames 5, 25 are assembled in a butted facing relationship, the door-end side edge portion 5s of the first upper frame 5 will be butted against the outer panel surface extension portion 25cs of the second upper frame 25. Specifically, when the first and second upper frames 5, 25 are butted against each other and assembled in an opposing relationship as described above, the corner portion X is formed in the following configuration. First, the door-end side leading edge portion 25as of the second upper frame upper plate surface portion 25a butts against the inner edge portion of the upper plate surface portion 5a so that the plate surfaces 5a and 25a are approximately flush with each other. The outer piece 5v formed on the first upper frame lower inner plate piece portion 5i is connected (continuous) to the door front edge portion 25ds of the second upper frame lower plate surface portion 25d in a substantially flush manner. The leading edge 5ns of the protruding piece 5n, which forms the leading edge 5s of the first upper frame outer plate surface 5c, butts against the extending portion 25cs of the second upper frame outer plate surface 25c, and in this case, the upstanding piece 5r of the protruding piece 5n on the first upper frame outer plate surface 5c is connected to the covering plate 25u that covers the leading edge of the extending portion 25cs of the second upper frame outer plate surface 25c in a substantially flush state, although there is a slight step. This substantially flush connection is also achieved between the upper surfaces of the upstanding pieces 5r, 25r of the protruding pieces 5n, 25n.

[0040] Furthermore, in this embodiment, a lock receiving portion 27 is provided in the corner space S3 so that the locking portion 16b of the locking device 16 provided on the first door body 1 can be engaged therewith. However, in this case, the lock receiving portion 27 cannot be installed with the second upper frame inner plate surface portion 25b open as in the first embodiment, and care must be taken to ensure that it can be installed with only the first inspection cover 5b open. Therefore, the lock receiving portion 27 is arranged in the corner space S3, with the lock receiving portion 27a, which engages with the locking portion 16b formed on the upper end of the rod 16a so that it can freely appear and disappear, and the extension portion 27b, which extends long toward the door end of the first door body 1, is attached via screws 27c to the lower inner plate material 5l of the first upper frame outer plate surface portion 5c, which is closer to the door end than the extension line H of the second upper frame inner plate surface portion 25b.By configuring it in this way, the lock receiving portion 27 can be attached and detached with only the first inspection cover 5b open. The second embodiment configured in this manner also exhibits the same effects as the first embodiment.

[0041] In this case, when assembling the first and second upper frames 5, 25, the inner plate surface portion 25b of the second upper frame 25 is fixed, so that the above-mentioned installation process of the first and second upper frames 5, 25 can be carried out with the inner plate surface portion 5b, which serves as an inspection cover for the first upper frame 5, removed, and then the inner plate surface portion 5b can be installed to assemble the first and second upper frames 5, 25. Furthermore, in the second embodiment, the inner plate surface portion 25b of the second upper frame 25 is fixed, so the inner plate surface portion 5b, which is the inspection cover of the first upper frame 5, is configured to be openable, closable, and detachable, but the door-end side portion of the inner plate surface portion 5b is detachably attached to the mounting bracket 22 provided on the second upper frame inner plate surface portion 25b via a detachable screw 22a. In this case, when the inspection cover 5b, which is the inner plate surface portion, is installed, a gap Y is formed between it and the second upper frame inner plate surface portion 25b, as in the first embodiment, so that consideration is given to avoid problems such as the inspection cover 5b coming into contact with and damaging the second upper frame inner plate surface portion 25b when the inspection cover 5b is opened or closed.

[0042] In the second embodiment of the present invention thus implemented, the opening and closing mechanisms K1, K2 of the first and second door bodies 1, 24 are installed in the first and second spaces S1, S2 between the inner and outer plate surface portions 5b, 25c, 5b, 25c of the first and second upper frames 5, 25, and the first door body 1 is a sliding door and the second door body 24 is a hinged door. In this structure, the inner plate surface portion 5b of the first upper frame 5 is a first inspection cover 5b for the first opening and closing mechanism K1 of the first door body 1 installed in the first space S1 between the inner and outer plate surface portions 5b, 5c of the first upper frame 5, and is configured to be openable and closable. In contrast, the inner plate surface portion 25b of the second upper frame 25 is fixed, but in this case the lock receiving portion 27 is attached to the outer plate surface portion 5c of the first upper frame in the corner space S3 between the door-end side edge portion 5s of the first upper frame 5 and the portion on the extension line H of the inner plate surface portion 15b of the second upper frame, and is configured so that it can be attached and detached when the inner plate surface portion 5b, which serves as the first inspection cover of the first upper frame 5, is open.As a result, the lock receiving portion 27 can be easily attached even if the inner plate surface portion 25b of the second upper frame 25 is fixed and cannot be opened.

[0043] Furthermore, when the second door body 2 is a hinged door in this manner, the lower panel surface portions 5d, 25d of the first and second upper frames 5, 25 are set to be approximately flush with each other, and in this case the doorstop portion 25z of the second door body 2 is formed to hang down from the lower panel surface portion 25d of the second upper frame 25, so that even if there is no vertical frame on the door front side, the doorstop can be reliably achieved when the second door body 24 is closed. Furthermore, in this structure, the door stop portion 25z formed on the second upper frame 25 is provided with a cushioning material 26 that abuts against the closed second door body 24, thereby cushioning the impact when the second door body 2 is closed and preventing unpleasant collision noises. In this case, the cushioning material 26 is attached to the lower plate surface portion 25d of the second upper frame 25, so it can be securely attached even in cases where there is no vertical frame on the door front side. Incidentally, the buffer material 26 may of course be provided on the trailing edge vertical frame 31 to which the hinge 24a is attached. [Industrial Applicability]

[0044] The present invention can be used as a door device in which two sets of door bodies that open and close an entrance are arranged side by side with a corner portion that is at a right angle (90 degrees), for example. [Explanation of symbols]

[0045] 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 24 Second door body 24a Hinge 25 Second upper frame 25a Upper plate surface part 25b Inner plate surface part 25c Outer plate surface part 25s extension 25as Upper panel edge on the door tip side 25z Door edge 26 Cushioning material 27 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. In a door device in which two sets of first and second door bodies are arranged side by side with a corner portion at a predetermined angle therebetween, The door frame of the door device is configured as a door frame without a vertical frame on the door front side by butting the door front edge portion of the first upper frame against an extension portion formed on the door front edge portion of the second upper frame, When a lock receiving portion that freely engages and locks a locking portion of a locking device provided at the door leading end of the first door body is provided in the door frame, A door device characterized in that the lock receiving portion is provided on the door-edge side portion of the first upper frame.

2. The first and second upper frames are provided with inner and outer plate surface portions that face each other with a gap between them, The door device according to claim 1, characterized in that the lock receiving portion is attached to the door-leading portion of the outer plate surface of the first upper frame in a state in which it is arranged between the door-leading edge portion of the first upper frame and the portion on the extension line of the inner plate surface of the second upper frame.

3. In the case where the opening and closing mechanisms of the first and second door bodies are installed in the space between the inner and outer plate surfaces of the first and second upper frames, and both the first and second door bodies are sliding doors, and both the inner plate surfaces of the first and second upper frames are inspection covers that can be opened and closed freely, The door device described in claim 2, characterized in that the lock receiving portion is attached to the outer plate surface portion of the first upper frame between the door-leading edge portion of the first upper frame and the extension line portion of the inner plate surface portion of the second upper frame, and is configured to be able to be attached and detached when the inner plate surface portion which serves as an inspection cover of the second upper frame is open.

4. The first door body is a sliding door, and the second door body is a hinged door, When the inner plate surface portion of the first upper frame is an inspection cover for the opening and closing mechanism of the first door body that is installed in the space between the inner and outer plate surface portions of the first upper frame and is configured to be openable and closable, and the inner plate surface portion of the second upper frame is fixed, The door device described in claim 2, characterized in that the lock receiving portion is attached to the outer plate surface portion of the first upper frame between the door-leading edge portion of the first upper frame and the extension line portion of the inner plate surface portion of the second upper frame, and is configured to be able to be attached and detached when the inner plate surface portion, which serves as an inspection cover on the first upper frame side, is open.

5. The door device according to claim 4, characterized in that the lower plate surface portions of the first and second upper frames are set to be approximately flush with each other, and a door stop portion of the second door body, which is a hinged door, is formed to hang down from the lower plate surface portion of the second upper frame.

6. 6. The door device according to claim 5, wherein a door stop portion formed on the second upper frame is provided with a buffer material that abuts against the closed second door body.

Images