Door device

Abstract

To reinforce mounting of a lock receiving part 20 when the lock receiving part 20 is internally mounted in a space S formed by a door end side vertical frame member 14a provided on a wing door 9 of a double hinged door device 1 and a door end side depth surface part 11a formed by bending from an indoor side surface plate 11.SOLUTION: A lock receiving part 20 is mounted in a state of holding a depth piece part 22b and a door end side depth surface part 11a of a reinforcing fitting 22 with a width piece part 22a fixed to an indoor side foot piece part 14c of a door end side vertical frame member 14a of a wing door 9 from the inside and the outside.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present invention relates to the technical field of door devices that are installed at the entrances of buildings such as apartment buildings and houses. [Background technology]

[0002] Generally, door systems for opening and closing entrances to buildings such as condominiums and residential buildings include a main door (parent door) and a sleeve door (sub-door) arranged on the left and right sides so that they can swing open and close like a double door, and a locking device in which a lock bolt such as a latch bolt or deadbolt that protrudes freely from a lock body provided on the main door fits into a lock receiving portion (strike) provided on the sleeve door to lock the main door. In such door systems, the sleeve door is generally kept in a closed position at all times, but can be opened when necessary, for example, to carry in or out large luggage. In such cases, it is necessary to provide a lock receiving section (strike) at the leading edge of the sleeve door, into which the lock bolt (deadbolt, latch bolt) protruding from the lock body provided on the main door side fits. Therefore, attempts have been made to make the vertical frame material provided at the leading edge of the sleeve door into a U-shape with an opening on the leading edge, and to install a lock receiving section inside the vertical frame (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2007-186985 Summary of the Invention [Problem to be solved by the invention]

[0004] However, when the lock receiving part is installed inside the U-shaped vertical frame as in the conventional method, the lock receiving part is attached to the visible surface on the door edge of the sleeve door. However, if the vertical frame is U-shaped, the visible surface on the door edge of the sleeve door is formed by bending the indoor and outdoor side panels in the indoor and outdoor directions from the tip edge of the vertical frame material, and the lock receiving part is attached to this visible surface. However, in this case, the lock receiving part is attached to the visible surface that is simply formed by bending the indoor and outdoor side panels, which poses problems such as poor strength, 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 device equipped with a main door and a sleeve door arranged on the left and right so as to open and close like double doors, and a lock device in which a lock bolt protruding freely from a lock main body provided on the main door fits into a lock receiving part provided on the sleeve door to lock the main door, wherein the door-end vertical frame member of the sleeve door is made into an U-shape with the door-end side open, and one face panel of the indoor / outdoor side panel of the sleeve door is bent from the tip edge of one leg piece of the door-end vertical frame member to the other leg piece side to form a door-end side visible surface, and the lock receiving part is attached to the space surrounded by the door-end side visible surface and the door-end vertical frame member, and in this door device, a reinforcing metal fitting is arranged inside the part of the door-end side visible surface where the lock receiving part is attached In this case, the reinforcing metal fitting has a projection piece that abuts against the projection surface on the door edge side and a projection piece that is fixed to the leg piece portion of the door edge side vertical frame material. The door device is characterized by the above. The invention of claim 2 has a lock receiving part fitted into the recessed piece of the reinforcing metal fitting. Incorporate 2. The door device according to claim 1, wherein a mounting hole for mounting is formed. The invention of claim 3 is a door device described in claim 1, characterized in that the lock device has first and second lock body portions provided on the main door, and first and second lock receiving portions into which the lock bolts of the first and second lock body portions respectively fit, and the reinforcing metal fitting is formed in a long shape spanning between the first and second lock receiving portions. The invention of claim 4 is a door device described in any one of claims 1 to 3, characterized in that the lock receiving portion comprises an outer receiving bracket that abuts the surface of the door leading side visible surface portion and an inner receiving bracket that abuts against a reinforcing bracket arranged on the inside of the door leading side visible surface portion, and is installed in a state in which the door leading side visible surface portion and the reinforcing bracket are clamped between the inner and outer receiving brackets. [Effects of the Invention]

[0006] By adopting the invention of claim 1, in the sleeve door of a door device which has a main door and a sleeve door arranged on the left and right so as to open and close like a folding door, and in which the lock bolt protruding from the lock body on the main door side fits into the lock receiving part on the sleeve door side to lock, when the lock receiving part is provided in a space surrounded by a U-shaped vertical frame member with an opening on the door end side and a door end side visible surface part formed by bending one of the indoor and outdoor panel panels, the door end side visible surface part is reinforced by a reinforcing metal fitting arranged on the inside, so that the lock receiving part can be attached securely without the reinforcing metal fittings being exposed to the outside. Moreover, The reinforcing metal fittings are provided with a projection piece that abuts on the projection surface on the door-end side and a visible piece that is fixed to the leg piece of the door-end side vertical frame material, so that the reinforcing metal fittings have a simple structure but can provide strong and reliable reinforcement. Claim 2 By making the invention, the reinforcing metal fitting fits the lock receiving part into the projection piece. and install As a result of the formation of a mounting hole for the lock receiving part, the lock receiving part can be attached without being hindered by the reinforcing metal fittings. Claim 3 By adopting this invention, the first and second lock receiving portions are provided above and below, but the reinforcing metal fitting is configured as a long object that spans the first and second lock receiving portions, thereby making it possible to increase strength while minimizing the increase in the number of parts as much as possible. Claim 4 By adopting this invention, the lock receiving portion can be attached in an integrated state in which the laminated door front side visible surface portion and the reinforcing metal fittings are sandwiched between the inner and outer receiving metal fittings, resulting in a strong attachment. [Brief explanation of the drawings]

[0007] [Figure 1] FIG. [Figure 2] FIG. [Figure 3] (A) and (B) are front and side views of the sleeve door. [Figure 4] (A)(B)(C) are a plan view, a horizontal cross-sectional view, and an enlarged cross-sectional side view of the upper frame portion of the sleeve door. [Figure 5] (A)(B)(C) are horizontal cross-sectional views of the frame material on the door edge of a sleeve door, a horizontal cross-sectional view of the French latch area, and a horizontal cross-sectional view of the lock receiving area. [Figure 6] This is a side view of the French lock portion of the sleeve door. [Figure 7] (A)(B)(C) are a front view, a side view, and a plan view of a closing plate for a French drop lock. [Figure 8] (A) and (B) are side and front views of the lock receiving portion of the sleeve door. [Figure 9] (A)(B)(C) are a side view, a rear view, and a plan view of the reinforcing metal fitting. [Figure 10] 1A, 1B, 1C, and 1D are a side view, an exploded side view, a plan view showing the assembled state, and a plan view showing the exploded state of the lock receiving part. [Figure 11] FIG. 2 is a front view showing the upper and lower hinge portions of the main door. [Figure 12] (A)(B)(C)(D) are a front view, a bottom view, a side view of the lower hinge part, and a bottom view with the cover removed. [Figure 13] (A)(B)(C) are a cross-sectional front view of the lower hinge portion, a cross-sectional side view of the adjustment screw portion, and a cross-sectional side view of the main body portion. [Figure 14] (A), (B), and (C) are a front view, a side view, and a bottom view of the cover body. DETAILED DESCRIPTION OF THE INVENTION

[0008] An embodiment of the present invention will be described below with reference to the drawings. In the drawings, reference numeral 1 denotes a door device (parent-child door device) to be installed at an indoor / outdoor (indoor / outdoor) entrance E. The door frame (door frame) constituting the door device 1 is configured in a rectangular frame shape using left and right vertical frames 2 and 3 and upper and lower horizontal frames 4 and 5. A main door (parent door) 6, which is opened and closed for normal access through the entrance E, is attached to the vertical frame 3 on one side (the right side in FIG. 1 ) in the left-right direction, via a hinge 7 for the main door 6, and can be opened and closed in the front-to-back direction (indoor / outdoor directions). Meanwhile, a sleeve door (child door) 9, which is normally kept closed via a general-purpose French lock 8 (described later), is attached to the vertical frame 2 on the other side via a hinge 10 for the sleeve door 9, forming a double-door opening and closing system. With this configuration, the vertical frame 3 on one side serves as the trailing edge vertical frame of the main door 6, and the vertical frame 2 on the other side serves as the trailing edge vertical frame of the sleeve door 9. In the figure, 1a denotes a door stop provided at the leading edge of the side door 9 on the indoor side so as to come into contact with the main door 6 when it is closed.

[0009] The main door 6 and the sleeve door 9 are provided with indoor and outdoor side panels (front and back panels) 11, 12, a filler 13 made of a core material such as a honeycomb core or a paper core that is filled between the indoor and outdoor side panels 11, 12, and a frame material 14 made of frame material on the four peripheral edges of the main door 6 and the sleeve door 9. The main door 6 is supported via a pivot hinge 7, and the sleeve door 9 is supported via a center-hanging hinge 10, so that they can swing open and closed toward the outdoors. First, with regard to the sleeve door 9, the vertical frame member 14a on the door front side of the frame material 14 has leg pieces 14c, 14d extending from both indoor and outdoor end edges of the spanning piece 14b on the door tail side toward the door front, giving it an U-shaped opening on the door front side, but the indoor side leg piece 14c is longer than the outdoor side leg piece 14d, and indoor and outdoor side panels 11, 12 are attached to these indoor and outdoor leg pieces 14c, 14d from the outside in the indoor / outdoor direction, but the indoor and outdoor side panels 11, 12 are bent inward in the indoor / outdoor direction at the door front side edge portion of each leg piece 14c, 14d.

[0010] In this case, as shown in Figure 5, the indoor side panel 11 that is attached from the indoor side to the longer indoor leg piece 14c is bent toward the outdoor side at the door-leading edge (tip edge) of the indoor leg piece 14c, and this bent panel forms the door-leading visible surface portion 11a that becomes the door-leading end face of the sleeve door 9. Moreover, the indoor side panel 11 is bent further from the tip edge of what has become the door-leading visible surface portion 11a toward the door trailing edge to form the outdoor side panel 11b, and the tip edge of the outdoor side panel 11b is configured to reach a position closer to the door trailing edge than the door-leading edge of the outdoor leg piece 14d. With this configuration, a space S is formed at the leading edge of the sleeve door 9, surrounded by the U-shaped leading edge vertical frame member 14a and the leading edge visible surface portion 11a. On the other hand, the outdoor side panel 12 is placed against the outdoor leg piece 14d from the outdoor side, and is bent from the tip edge of the outdoor leg piece 14d toward the indoor side and abuts (or closely faces) against the outdoor side portion 11b of the indoor side panel 11, forming a step surface portion 12a that abuts against the outdoor side portion 11b in a step-like manner, and further forming a bent surface portion 12b that is bent from the step surface portion 12a toward the door tail side while following the outdoor side portion 11b.

[0011] The sleeve door 9 configured in this manner is provided with an intercom device 15 and a lighting fixture 16, which are exemplified as electrical and electronic appliances (electrical and electronic devices), exposed to the outdoors, but the wiring 17 for electrically connecting these intercom device 15 and lighting fixture 16 passes through a wiring pipe (through hole) 9a arranged inside the sleeve door 9 and is electrically connected by being arranged from the upper edge of the sleeve door 9 to the indoor side via a through hole 4a provided in the upper horizontal frame 4. In this case, the upper edge of the sleeve door 9 is made up of a stack of an upper frame member 14e in a U-shape with an open bottom, and upper visible surface portions 11c, 12c, which are formed by bending the indoor / outdoor side panels 11, 12 in the indoor / outdoor direction at their upper edge portions on a spanning portion 14g of the upper frame member 14e.A through hole 14f is formed in the upper edge of the sleeve door 9 configured in this manner, but the through hole 14f is in the shape of a semi-ellipse that is long in the indoor / outdoor direction, and the arc-shaped edge on the outdoor side does not reach the outdoor leg piece 14j of the upper frame member 14e, while the edge on the indoor side is configured by cutting out the upper end of the indoor side leg piece 14h of the upper frame member 14e, including the corresponding portion of the indoor side panel 11. When the sleeve door 9 is opened to the outdoors, the wiring 17 that passes through the wiring pipe 9a moves relative to the indoor side with respect to the through hole 14f that passes through it loosely. However, by maximizing this relative movement, when the wiring 17 abuts against the indoor side edge of the through hole 14f formed in the upper frame material 14e, the wiring 17 will not abut against the horizontal cutout edge 14k like the edge formed on the outdoor side of the spanning piece 14g, but will abut against the upward cutout upper end 14i of the indoor side leg piece 14h from the outdoor side. As a result, the risk of the wiring 17 abutting against the horizontal cutout edge 14k and suffering early abrasion damage is reduced, making it effective for sleeve doors 9 that are opened infrequently.

[0012] Furthermore, the French locks 8 are installed above and below the space S in the visible surface portion 11a on the door front side of the sleeve door 9. The French locks 8 are general-purpose locks that are configured to be locked by operating the operating device 8a up and down, so that the lock rod 8d appears and disappears from the upper and lower edge portions of the sleeve door 9 and fits into the lock holes 4b, 5b provided in the upper and lower horizontal frames 4, 5; further details will be omitted. In this embodiment, the French drop lock 8 is fastened via a screw 8c to the door-end visible surface 11a where the operating device 8a is visible, and furthermore, the left and right outer surface portions of the French drop lock 8 are covered with a blocking plate 8b, thereby preventing the operating device 8a from being accidentally unlocked and the side door 9 from being opened. Incidentally, the covering plate 8b for the door leading side visible surface portion 11a can be attached and removed by using a pop nut or by forming a tapped hole in the door leading side visible surface portion 11a so that a screw can be screwed in, but in this embodiment the covering plate 8b is fastened with a screw 8e using a pop nut.

[0013] Furthermore, the sleeve door 9 is provided with a lock receiving portion (strike) into which the lock bolt of the lock device provided on the main door 6 is fitted, but in this embodiment, two types of lock devices, a first and a second, for the main lock and the auxiliary lock, are provided as lock devices, and therefore, a first lock body portion 18 and a second lock body portion 19, which constitute the first (for the main lock) and second (for the auxiliary lock) lock devices, are provided above and below the edge of the door leading side of the main door 6, and the first body portion 18 is provided with a deadbolt by inserting a key (not shown) into the key hole portion 18a to operate the lock. The first lock body 18 is equipped with a locking mechanism in which deadbolt 18b appears and retracts to lock and unlock, and a locking mechanism in which latch bolt 18d, which is always protruding and locked when the operating handle 18c is operated, retracts to unlock, while the second lock body 19 is equipped with only a locking mechanism in which deadbolt 19b appears and retracts to lock and unlock when a key is inserted into keyhole 19a and the lock is operated, but does not have any locking mechanism equivalent to the latch bolt 18d provided on the first lock body 18 side.

[0014] Since the first and second lock body portions 18, 19 are provided on the main door 6 side in this manner, it is necessary to provide the first and second lock receiving portions 20, 21 corresponding to these first and second lock body portions 18, 19 on the side edge of the sleeve door 9, and for this reason the following considerations have been taken into account in this embodiment. As mentioned above, the door-front side vertical frame member 14a of the sleeve door 9 is U-shaped, and a door-front side visible surface portion 11a is provided at the opening on the door-front side, where the tip portion of the indoor side panel 11 is bent.The first and second lock receiving portions 20, 21 are installed inside the space S formed by the vertical frame 14a and the door-front side visible surface portion 11a, and in this embodiment, the door-front side vertical frame member 14a has the door-front side visible surface portion 11a portion, where these lock receiving portions 20, 21 are actually attached, reinforced with reinforcing metal fittings 22.

[0015] The reinforcing bracket 22 is L-shaped in plan view, having a visible piece 22a and a recessed piece 22b, with the visible piece 22a welded (fixed) to the indoor leg piece 14c of the door-front vertical frame member 14a in a state where it abuts from the outdoor side, and the recessed piece 22b is arranged in a state where it abuts against the door-front recessed surface portion 11a of the indoor side panel 11 from the door tail side (back side). Furthermore, the reinforcing metal fitting 22 is formed as a long member that extends between the first and second lock receiving portions 20, 21, and the projection portion 22b has a projection portion 22b that extends between the first and second lock receiving portions 20, 21. Insert and install First and second mounting Mounting holes (integrated holes, In this case, the first and second mounting holes 22c and 22d are groove-shaped and open at the tip edge (outdoor edge) of the projection piece 22b.

[0016] The lock receiving portions 20, 21 differ in that the first lock receiving portion 20 receives both the deadbolt 18b and the latch bolt 18d, while the second lock receiving portion 21 receives only the deadbolt 19b, but in this embodiment they have the same structure, and therefore from here on, the first lock receiving portion 20 will be described in detail, and an explanation of the second lock receiving portion 21 will be omitted unless specifically necessary. Incidentally, since the second lock receiving portion 21 only receives the deadbolt 19b, it can be made smaller than the first lock receiving portion 20, but this is something that can be changed as needed.

[0017] The first lock receiving portion 20 is configured to include an outer metal fitting 20a that is placed against and abuts against the door-leading-side visible surface portion 11a of the indoor side panel 11 from the door-leading-side, and an inner metal fitting 20b that is placed against and abuts against the door-tail-end portion 22b of the reinforcing metal fitting 22 from the door-tail-end side by providing the reinforcing metal fitting 22. As described above, the first lock receiving portion 20 is configured to be attached in a state in which the door-leading-side visible surface portion 11a and the visible portion 22b, which are arranged in a stacked configuration, are sandwiched between the door-leading-side visible surface portion 11a and the visible portion 22b, by tightening the upper and lower end edges with screws 20c with the outer metal fitting 20a abutting against the door-leading-side visible surface portion 11a and the inner metal fitting 20b abutting against the visible portion 22b of the reinforcing metal fitting 22. When the first lock receiving portion 20 is thus assembled into the sleeve door 9, the bent piece portion 20d formed by bending at the outdoor edge portion of the outdoor fitting 20a of the first lock receiving portion 20 is configured to cover the opening 22e formed in the first assembly hole 22c of the reinforcing fitting 22, thereby also serving to reinforce that portion.

[0018] On the other hand, as mentioned above, the upper edge of the main door 6 is pivotally supported by the upper horizontal frame 4 via the hinge 7 so that it can swing open and closed freely, and the lower edge is pivotally supported by the one side vertical frame 3 so that it can swing open and closed freely. The hinge 7 is a pivot hinge, and is composed of a door-side hinge half 7a provided on the main door 6 side, and a frame-side hinge half 7b provided on the door frame side. The door-side hinge half 7a comprises a hinge main body 7c attached to both the upper and lower edge portions of the main door 6, and an extension portion 7d extending from the hinge main body 7c to the outdoors; when the door-side hinge half 7a is attached to the lower edge portion of the main door 6, a bearing hole 7e is provided in the extension portion 7d, and when it is attached to the upper edge portion, a hinge shaft 7f protrudes upward from the extension portion 7d. In contrast, the frame-side hinge half 7b attached to the door frame side has a hinge shaft 7g formed in the frame-side hinge half 7b that corresponds to the lower door-side hinge half 7a and that fits into the bearing hole 7e, and the frame-side hinge half 7b that corresponds to the upper door-side hinge half 7a has a bearing hole 7h formed in which the hinge shaft 7f fits.

[0019] Of the hinges 7 configured in this manner, the hinge main body 7c of the door-side hinge half 7a that is attached to the top and bottom of the main door 6 differs only in whether the extension 7d is provided with a hinge shaft 7f or a bearing hole 7e, and the attachment structure of the door-side hinge half 7a to the main door 6 side has the same configuration despite the difference in the top and bottom (head and bottom), so from here on, we will explain the door-side hinge half 7a that is attached to the bottom, and will omit explanations of the upper door-side hinge half 7a unless specifically necessary.

[0020] The hinge main body 7c constituting the door side hinge half 7a has a rectangular shape that is long in the left-right direction, and an extension portion 7d is formed extending from the door end side of the long side on the outdoor side, and the hinge main body 7c is fixed to the lower frame material 24. Specifically, the lower frame material 24 is composed of a leading edge frame portion 24a and a trailing edge frame portion 24b, both of which are square-shaped with an opening at the top, and the leading edge frame portion 24a is provided with a spanning piece 24c that extends to the lower edge of the sleeve door 9, and lower edge visible surface portions 11d, 12d, which are formed by bending the lower edges of the indoor and outdoor side panels 11, 12 inward in the indoor / outdoor direction, are attached to the spanning piece 24c using rivets 24d as fastening means.

[0021] In contrast, the trailing edge side frame portion 24b is arranged so that the spanning piece portion 24e is higher than the leading edge side frame portion 24a, thereby allowing the hinge main body portion 7c to be arranged in the space below the spanning piece portion 24e, with the indoor and outdoor sides surrounded by the indoor and outdoor side panels 11, 12. The hinge main body 7c is placed on the spanning piece 24e from below and is fastened to a back plate 7i placed on the top surface of the spanning piece 24e via a screw 7j. However, the back plate 7i is longer toward the door edge than the hinge main body 7c, and is configured so that the position of the hinge main body 7c can be adjusted by loosening the adjustment screw 7k that screws in from the spanning piece 24e.

[0022] The lower edge visible surface portions 11d, 12d of the indoor / outdoor side panels 11, 12 have cutout portions 11e, 12e formed by cutting out portions corresponding to the hinge main body portion 7c and the adjustment screw 7k, so that the hinge main body portion 7c and the adjustment screw 7k can be seen from below.As a result, the lower edge visible surface portions 11d, 12d have remaining cutout portions 11f, 12f in the areas extending from the inner edges of the cutout portions 11e, 12e to the front and back outer surfaces of the main door 6. Furthermore, in this product, the lower edges 11h, 12h of the door tail edge side visible surface portions 11g, 12g of the indoor and outdoor side panels 11, 12 are in a state in which the cut-out edges at the lower edge side visible surface portions 11d, 12d are left exposed. Furthermore, in this embodiment, the outer periphery of the extension 7d is covered with a covering material 26.

[0023] In this way, cutout portions 11e, 12e are formed on the lower edge side visible surface portions 11d, 12d with remaining cutout portions 11f, 12f remaining, and a cover body 25 for covering the hinge main body portion 7c is provided on the lower edge side visible surface portions 11d, 12d. The cover body 25 is L-shaped and comprises a horizontal piece (lower piece) 25a and a vertical piece 25b, with the horizontal piece 25a being wide enough to extend beyond the notch edges of the cutouts 11e and 12e and cover the remaining outer notches 11f and 12f, and the leading edge of the horizontal piece 25a is fastened to the lower projection surfaces 11d and 12d of the adjustment screw 7k using a rivet 25c as a fastener. Meanwhile, the vertical piece 25b is fastened to the trailing edge projection surfaces 11g and 12g of the trailing edge vertical frame member 27, which is U-shaped and has an open leading edge, using a rivet 25d as a fastener. By attaching the cover body 25 to the main door 6 in this manner, the cover body 25 covers not only the cutout edges of the cutout portions 11e and 12e, but also the lower edges 11h and 12h of the visible surface portions 11g and 12g on the door tail edge side.

[0024] In this embodiment configured as described above, in the door device 1 having a main door 6 and a side door 9 arranged on the left and right so as to open and close like a double door, the side door 9 is provided with first and second lock receiving portions 20, 21 into which the deadbolt 18b, latch bolt 18d, and deadbolt 19b, which are lock bolts protruding from the first and second lock main bodies 18, 19 provided on the main door 6, are fitted to lock the main door 6. In this case, the door-front vertical frame member 14a provided on the sleeve door 9 is U-shaped with an opening on the door-front side, and the indoor side panel 11 of the sleeve door 9 is bent from the tip edge of the indoor side leg piece 14c of the door-front vertical frame member 14a toward the outdoor side to form the door-front visible surface portion 11a, and the first and second lock receiving portions 20, 21 are installed inside the space S surrounded by the door-front visible surface portion 11a and the door-front vertical frame member 14a, and the first and second lock receiving portions 20, 21 are attached to the door-front visible surface portion 11a.

[0025] In the present embodiment configured as described above, the door-end-side visible surface portion 11a is reinforced by the provision of a reinforcing metal fitting 22. In this case, the reinforcing metal fitting 22 has a visible piece portion 22b that abuts and overlaps (is superimposed on) the door-end-side visible surface portion 11a from the inside on the space S side and is not exposed to the outside. Taking the first lock receiving portion 20 as an example, the first lock receiving portion 20 is attached in a state in which the door-end-side visible surface portion 11a and the reinforcing metal fitting visible surface portion 22b in the stacked state are sandwiched between the inner and outer metal fittings 20b, 20a. As a result, the first lock receiving portion 20 is attached to the door-end-side visible surface portion 11a that has been reinforced in a stacked manner by the reinforcing metal fitting visible piece portion 22b, and is therefore reinforced.

[0026] Furthermore, in this case, the reinforcing bracket 22 is L-shaped with a visible piece 22a, and the visible piece 22a is fixed in a state in which it abuts the indoor side leg piece 14c of the door-end vertical frame member 14a from the inside.As a result, the reinforcing bracket 22 is integrated with the door-end vertical frame member 14a and reinforced, and as a result, the first lock receiving portion 20 is installed in a more reinforced state.

[0027] This type of reinforcing attachment is also performed on the second lock receiving portion 21, but in this embodiment, the reinforcing metal fitting 22 is not provided individually for the first and second lock receiving portions 20, 21, but is configured as a single, long piece that spans the first and second lock receiving portions 20, 21.As a result, further reinforcing attachment of the first and second lock receiving portions 20, 21 can be achieved while reducing the number of parts. Moreover, the first and second lock receiving portions 20, 21 are fitted into the recessed portion 22b of the reinforcing metal fitting 22. and install As a result of the formation of mounting holes 22c, 22d for the reinforcing metal fittings 22, the first and second lock receiving portions 20, 21 can be mounted without being hindered by the reinforcing metal fittings 22, and the workability of the mounting work can be prevented from being impaired. [Industrial Applicability]

[0028] The present invention can be used as a door device that is installed at the entrance of a building such as an apartment building or a house. [Explanation of symbols]

[0029] 1 Door device 4 Upper horizontal frame 4a through hole 6 Main Door 7 Hinge 7a Door side hinge half 7c Hinge body 8 French Drop Lock 8a Operating tools 8b Closure plate 9 Side door 11 Indoor side panel 11a Door end side visible surface 11d Lower end edge side prospective surface 11e Notch 11f Remaining notch 12 Outdoor side board 14a Door end vertical frame material 14b Straddle part 14c Indoor leg piece 14d Outdoor side leg piece 14e upper frame material 14f through hole 15 Intercom device 16 Lighting fixtures 17 Wiring 18 First lock body 19 Second lock body 20 First lock receiving part 21 Second lock receiving part 22 Reinforcement metal fittings 22a Finding piece 22b Projection part 24 Lower frame material 24b End of door frame 24e straddle section 25 Cover body 25a Horizontal piece 25b Vertical piece 27 Door end vertical frame material E Entrance / Exit S Space

Claims

1. A door device is provided with a main door and a side door arranged on the left and right to open and close like a double door, and a locking device is provided that locks the main door by fitting a lock bolt that protrudes freely from a lock body provided on the main door into a lock receiving part provided on the side door, The vertical frame member on the door end side of the sleeve door is made into an U-shape with the door end side open, The door device is configured such that one of the panel panels of the indoor and outdoor side panels of the sleeve door is bent from the tip edge of one leg piece of the door-end vertical frame member to the other leg piece side to form a door-end side visible surface portion, and the lock receiving portion is attached to the space surrounded by the door-end side visible surface portion and the door-end vertical frame member. When arranging a reinforcing metal fitting inside the portion where the lock receiving portion of the door end side visible surface is attached, A door device characterized in that the reinforcing metal fittings are provided with a projection piece portion that abuts the projection surface portion on the door edge side and a projection piece portion that is fixed to the leg piece portion of the door edge side vertical frame material.

2. 2. The door device according to claim 1, wherein the recessed portion of the reinforcing metal fitting is formed with a mounting hole for fitting and installing the lock receiving portion.

3. The locking device has first and second lock bodies provided on the main door, and first and second lock receiving parts into which the lock bolts of the first and second lock bodies are respectively fitted, provided on the sleeve door; 2. The door device according to claim 1, wherein the reinforcing metal fitting is formed in an elongated shape spanning between the first and second lock receiving portions.

4. The door device according to any one of claims 1 to 3, characterized in that the lock receiving portion comprises an outer receiving bracket that abuts the surface of the door leading side visible surface portion and an inner receiving bracket that abuts against a reinforcing bracket arranged on the inside of the door leading side visible surface portion, and is installed in a state in which the door leading side visible surface portion and the reinforcing bracket are clamped between the inner and outer receiving brackets.

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