DOOR FOR INSTALLATION IN A NICHE

Description

[0001] The present invention relates to a door, in particular a niche door, for installation in a niche, preferably for automatically and completely closing a passage, in particular as a fire door.

[0002] Niche doors save space and offer a high degree of functionality. When fully opened, the door sits flush in a wall niche, maintaining the maximum passage width. Niche doors are used, for example, in hallways where the passage width cannot be reduced, such as in escape routes. Furthermore, niche doors are particularly popular in prestigious and public buildings due to their high level of functionality. When opened, they sit in the wall to save space and are perceived as visually appealing. With such niche doors, the further spread of a fire can be prevented by the automatic closing of the door in the event of a fire. If there is no danger, the door sits flush in the wall niche, and in a danger, the door closes to prevent the further spread of the danger.

[0003] DE 2020 10007095 U1 discloses a niche door in which a double-walled panel is attached to the door. The double-walled panel has a projection. The niche door can be inserted into a niche in such a way that, when opened, it can be integrated flush with the wall bordering the niche. The projection of the double-walled panel from the door allows for a minimal gap width between the niche door and the wall. Another niche door is known from DE 20 2010 007 095 U1.

[0004] Such niche doors fit into niches in a visually appealing way and are considered particularly attractive due to the small gap between the niche door and the wall. The disadvantage of these niche doors is that the mechanism is inaccessible. To access the mechanism, the reinforcement must first be removed, which involves considerable effort. Furthermore, the reinforcement increases the thickness of the door, which in turn necessitates a deep niche. However, you want to keep the niche as shallow as possible so as not to weaken the wall too much. Thickening the wall is not advisable for economic reasons, as living space is valuable and expensive.

[0005] The invention is based on the object of creating a door, in particular a niche door, for installation in a niche, preferably for automatically and completely closing a passage, especially as a fire door, that overcomes the disadvantages of the prior art. In particular, a niche door is to be provided that fits snugly into a shallow niche and is easy to maintain. The niche door fits flush with the parts bordering the niche and is barely noticeable.

[0006] This object is achieved by a door having the features of the independent claims. Advantageous embodiments are specified in the respective subclaims.

[0007] A door according to the invention, in particular a niche door, for installation in a niche, preferably for automatically and completely closing a passage, in particular as a fire door, comprises a door leaf with a niche side which, in the installed state, faces the niche in a fully open position of the door, and with a cover side which, in the installed state, faces away from the niche in the fully open position of the door, at least one door hinge for pivotably connecting the door leaf to a door frame, wherein the door hinge is arranged in the region of a hinge-side end face of the door leaf.

[0008] The door is characterized in that an inspection flap is provided which has at least one hinge for foldable connection to a door frame or an end wall delimiting the niche, and which, in the installed state with the door fully open, is approximately flush with the edge of the door leaf, with which the door leaf is connected to the door frame with the door hinge, so that the inspection flap conceals the view of the door hinge when the door is open, and the inspection flap, in the installed state, is either detachably attached to the door or is pivotally mounted independently of the door.

[0009] This allows the inspection flap to be removed or swung away when the door is open, so that the door hinge is freely accessible, for example for maintenance purposes.

[0010] By placing the inspection flap adjacent to the hinge, the hinge can be concealed when the door is open, allowing the niche door to fit flush into the niche and be barely noticeable. Alternatively, the inspection flap can be swung out of the way, allowing easy access to the hinge. Unlike with a niche door according to DE 2020 10007095 U1, there is no need to remove a doubling, which would involve the laborious removal of a corresponding recess for a recessed door handle.

[0011] The door can be swung into a fully open position, completely clearing a passageway, inserted into the recess, and concealing it. The door can be swung out into a fully closed position, completely blocking the passageway and allowing free access to the recess.

[0012] By providing an inspection panel, the mechanics of the fully opened door, pivoted into the recess, can be concealed. The inspection panel has a fully pivoted position, or rather, a position in which it conceals the mechanics and, in particular, the hinge of the pivoted-in door. The pivoted-in position of the inspection panel can also be referred to as the closed position. Using an inspection panel eliminates the need to reinforce the door. The door is therefore thin and particularly lightweight.

[0013] Concealing the door hinge is to be understood in the context of the invention in such a way that the inspection flap at least partially conceals the view of the door hinge from a passage which the door can close in the fully swung-out position and the door hinge is not or hardly perceived by people.

[0014] When fully retracted, the inspection panel rests against the hinge-side end of the door leaf when fully opened or retracted, and the access panel is flush with the door leaf's faceplate. This creates a flush finish between the inspection panel and the door leaf. Flush means that the access panel and faceplate form a single, flat surface. The fully retracted door and the fully retracted inspection panel then form a flush surface with the end walls surrounding the recess, with the recess concealed by the door and the inspection panel and barely noticeable.

[0015] If the cover side of the door leaf is not flat, for example, if it has decorative details, a flush finish means that the cover side and the access side of the inspection panel form a single visual unit, with no or only a slight offset between the cover side and the access side toward the recess or in the opposite direction. The inspection panel and the door leaf then fit flush into the recess, making the recess door barely noticeable.

[0016] The cover side of the door leaf is also called the closing side. The recess side of the door leaf is also known as the opening side.

[0017] The inspection panel has a pivoted-out position in which the door mechanism, particularly the hinge, is accessible when the door is fully retracted. The inspection panel can be moved independently of the door into the pivoted-out position, where the mechanism, and particularly the hinge, is freely accessible. The hinge can then be easily accessed from the passageway for repair and maintenance work without having to pivot the door out, dismantle the door leaf, or first remove a cladding.

[0018] The door can have a rebate, in which case it is referred to as a rebated door. However, it can also be designed as a flush-fitting door. In this case, the door has no rebate and forms a flush surface with the door frame when closed, i.e., when fully extended. Such doors are also referred to as unrebated doors.

[0019] The door can be designed as a smoke-protection, fire-protection, and / or sound-protection door. The door can also have one or more viewing windows.

[0020] The door can be designed as a single-leaf door or as a double-leaf door.

[0021] The door can be made of any material, in particular metal alloys and / or wood.

[0022] The door leaf can have a width between 400 mm and 3000 mm, preferably between 500 mm and 1500 mm, in particular a width in accordance with the DIN 18101 standard.

[0023] The door leaf can have a height between 1500 mm and 5000 mm, preferably between 1700 mm and 2800 mm, and preferably between 1900 mm and 2200 mm. The height of the door leaf can, in particular, comply with the DIN 18101 standard.

[0024] The width of the inspection flap is smaller than the door leaf width. The width of the inspection flap is preferably between 1% and 50% of the door leaf width, more preferably between 2% and 30% of the door leaf width, and more preferably between 5% and 15% of the door leaf width.

[0025] The inspection hatch is preferably the same height as the door leaf. The inspection hatch can be the same thickness as the door leaf or, preferably, less.

[0026] Door hinges can be used, for example, as sash hinges, mortise hinges, or pivot hinges. Safe hinges or hinges such as cup hinges, cross hinges, or concealed four-joint hinges are also possible. Multi-joint hinges are also particularly suitable.

[0027] The door leaf can have a lock with a lock case to lock the door in the fully closed position. For manual opening and closing of the door, the door leaf can have a door fitting on both the recess side and the panel side. Door handles or doorknobs can be used as door fittings. For example, a recessed door handle, a so-called recessed door handle, such as a hall handle, can be provided on the panel side. The door handle or doorknob is then completely recessed into the door leaf and does not protrude beyond the panel side in the direction of travel. Such recessed handles are visually particularly appealing due to their flush design. It can also prevent people passing by the open door from accidentally bumping into the door handle.

[0028] The inspection panel can be pivoted to at least one inspection panel frame or to a wall bordering the recess. When the inspection panel is fully pivoted in, the hinge-side face of the panel faces away from the hinge-side face of the door leaf. The inspection panel is then designed to pivot or fold around at least one hinge axis. The inspection panel can be pivoted outward with a pivoting movement to easily access the door's hinge.

[0029] The hinge can have a closing force that holds the access panel in the closed position and allows the access panel to swing out only by overcoming this closing force. This effectively prevents the access panel from swinging out unintentionally.

[0030] Common hinges such as cup hinges, multi-joint hinges or torsion hinges can be used to pivot the inspection hatch.

[0031] It is advantageous if the inspection hatch has a force-generating element that exerts a force on the hatch once it has been opened to a defined degree, causing the hatch to then swing out automatically. For this purpose, the inspection hatch can be manually swung out to a defined degree, from which point the hatch will swing out automatically, preferably completely, without the user having to apply any further force. This assists in swinging out the inspection hatch. The inspection hatch can then be swung out particularly easily for maintenance purposes. Gas pressure springs, gas tension springs, or torsion springs, for example, can be used as force-generating elements. The inspection hatch is then swung in against the force generated by the force-generating element up to the defined degree of opening.

[0032] Particularly preferably, the inspection panel and the door are arranged in such a way that when the door is closed, the panel strikes the inspection panel, forcing it open. The door is thus mechanically coupled to the inspection panel. When the door is swung out of the recess, the inspection panel is simultaneously partially or completely swung out. This is particularly advantageous for an automatically locking door, especially a fire door, since the door and the inspection panel can be moved together into a swung-out position, completely blocking the passage.

[0033] The inspection panel can have a bevel on the end face facing away from the hinge, with an angle of between 10° and 80° being formed between the bevel and the access side. The bevel thus has an angle to the access side that is preferably between 25° and 65°, more preferably between 30° and 45°. The bevel ensures that the gap width between the inspection panel and the door can be kept small. This makes it possible to position the inspection panel particularly close to the door. This allows the niche to be covered with a narrow gap width, which is perceived as particularly attractive.

[0034] The inspection panel can have a fitting that limits the pivoting movement of the inspection panel relative to the door leaf when it is pivoted in and / or can be used as an operating element. The fitting can serve as a stop for the inspection panel in the fully pivoted-in position. When pivoting in, the stop can limit the pivoting movement and specify the pivoted-in end position of the inspection panel. When the inspection panel is fully pivoted in, the fitting can rest directly or indirectly against the pivoted-in door leaf. The stop can have a stop edge for this purpose, which rests against the door leaf when pivoted in. In this way, a particularly flush alignment of the inspection panel with the door leaf can be achieved.

[0035] Due to the narrow gap between the access panel and the door, it may be impossible for a user to reach through the gap to grasp the access panel. To still be able to easily swing the access panel out, the fitting can serve as an alternative or additional control element. The fitting can be used as a handle to swing the access panel in and / or out. Alternatively, the fitting can also be grasped with the help of a tool to swing the access panel in and / or out.

[0036] A sliding edge can be arranged between the door leaf and the inspection panel. When the door is swung out, this edge transfers a force from the door leaf to the inspection panel, causing the inspection panel to swing out into an open position. When the door is swung out, a force can be transferred to the inspection panel via the sliding edge. This force then causes the inspection panel to swing out. The door and the inspection panel are therefore mechanically coupled to one another via the sliding surface. The sliding surface can be arranged on the inspection panel. When the door is swung out, it presses against the sliding edge via the door leaf, transferring a force to the inspection panel, causing the inspection panel to swing out completely.

[0037] The bevel is preferably designed as a sliding edge. The door, in particular the door leaf, can press against the bevel when the door is swung out and slide along it. For example, an edge formed between the hinge-side end face and the panel side can act on the bevel as a sliding surface when the door is swung out. The force then acting on the bevel generates a torque acting on the inspection panel, causing the inspection panel to swing out. In the case of an automatically closing door, the inspection panel is preferably swung out completely so that the door completely blocks the passage and the inspection panel is swung out completely. The inspection panel can then protrude into the passage. In the fully swung out position, the inspection panel is preferably aligned parallel to the door leaf of the fully swung out, i.e. closed, door.

[0038] It is particularly advantageous if the sliding edge is formed by the fitting. The fitting then has a sliding edge onto which the door acts during the opening process. The sliding edge is preferably arranged in the area of ​​the bevel of the inspection panel. The fitting can be arranged on the underside of the door leaf facing the floor and / or on the top side of the door leaf facing the ceiling. The fitting can correspond to the contour of the door leaf in the area of ​​the fitting. However, the fitting can also have a projection as a sliding surface in the area of ​​the bevel and / or in the area of ​​a door hinge side facing the door hinge when the inspection panel is in the swung-in position. The projection prevents the door and the inspection panel from coming into direct contact, which could cause damage or signs of wear due to contact.

[0039] Alternatively, the fitting can be arranged at any height of the inspection hatch.

[0040] However, it is also possible for the fitting to partially or completely cover the bevel and extend the entire height of the access panel. When the door swings out, it can then exert a force on the fitting across the entire height, forcing the access panel open. This way, the force is evenly distributed across the entire height of the access panel, so that a uniform torque acts on the access panel.

[0041] The door preferably has a door fitting, wherein at least one sliding edge is arranged between the door fitting and the fitting, which transfers a force from the door leaf to the inspection flap when the door is closed, whereby the inspection flap is pushed open. When the door is swung out, the door fitting then presses on the fitting, whereby the inspection flap is pushed open. The fitting and the door fitting can be arranged in a particularly advantageous manner on the underside facing the floor and / or on the top side of the door leaf or inspection flap facing the ceiling. The force is thus transferred between the door and the inspection flap exclusively via the door fitting and the fitting of the inspection flap. The formation of at least one sliding edge between the door fitting and the fitting prevents the door and the inspection flap from coming into direct contact.The door fitting and the hardware slide over each other without leaving any visible marks. This effectively prevents damage and signs of wear in the visible area of ​​the door leaf and the access panel.

[0042] The door can be equipped with a door closer that, when manually or electrically operated, exerts a closing force on the door, causing it to close completely. The closing force is designed such that the door presses against the access panel in such a way that the access panel is swung out during the door closing process and, preferably, is moved into the fully swung-out position.

[0043] According to a second embodiment, the door is characterized in that an inspection flap is provided which is detachably attached to the door and, when the door is fully opened, is approximately flush with the edge of the door leaf, with which the door leaf can be connected to the door frame with the door hinge, so that the inspection flap, when installed, conceals the view of the door hinge when the door is open.

[0044] This allows the inspection flap to be removed when the door is swung in, so that the door hinge is freely accessible, for example for maintenance purposes.

[0045] By placing the inspection flap adjacent to the hinge, the hinge can be concealed when the door is open or pivoted into the recess, allowing the recess door to fit flush into the recess and be barely noticeable. On the other hand, the inspection flap can be removed, allowing easy access to the hinge. Unlike with a recess door according to DE 2020 10007095 U1, there is no need to remove a doubling, which would involve the laborious removal of a corresponding recess for a recessed door handle.

[0046] In the context of the invention, detachable means that the inspection panel can be easily manually detached and removed from the door when it is fully retracted. If the inspection panel is connected to the door leaf and the door is pivoted into the recess, the inspection panel conceals the door hinge when viewed from the doorway. By detaching or removing the inspection panel, the door mechanism behind the inspection panel, in particular the door hinge, becomes accessible. Maintenance and service work on the door hinge can then be easily carried out when the door is fully retracted. The inspection panel does not thicken the door leaf, allowing a narrow door shape to be achieved. At the same time, a small gap can be achieved between the door leaf and the inspection panel, giving the assembly an attractive appearance.

[0047] When the door is swung out, the access panel remains connected to the door and swings with it around the same pivot axis as determined by the hinge. When the door is swung out, i.e., closed, the access panel is swung into the recess. When the door is fully swung out, the access panel is then ideally located completely within the recess.

[0048] The door leaf can have a retaining profile to which the inspection panel is magnetically connected. The access side of the inspection panel then sits flush with the face of the door leaf. The inspection panel can have a stop edge that rests against the retaining profile toward the door leaf, creating a positive fit. This allows the inspection panel to be easily positioned vertically to the door leaf and connected to the door leaf via the retaining profile. The stop edge can also be used to position the inspection panel horizontally, thereby achieving a minimal gap width between the inspection panel and the door leaf.

[0049] The retaining profile can be partially or completely designed as a permanent magnet or have a permanent magnet. The inspection panel can then be partially or completely designed as a magnetizable body or have a magnetizable body. It is of course also possible for the inspection panel to be partially or completely designed as a permanent magnet or have a permanent magnet, and for the retaining profile to be partially or completely designed as a magnetizable body or have a magnetizable body. In this way, an easy-to-handle magnetic connection can be realized between the retaining profile and the inspection panel.

[0050] A plaster profile can be provided which is arranged on the wall flush with the access side, whereby the wall borders on the hinge-side end face and whereby the plaster profile partially conceals the niche. Since the inspection hatch is connected to the door and is also pivoted when the door is pivoted out, a sufficiently wide gap must be ensured between the inspection hatch and the adjacent wall to prevent the inspection hatch from hitting a wall bordering the niche. The plaster profile is preferably fastened to the wall and advantageously extends over the entire height of the niche. The plaster profile can have a cover section which can have a width corresponding to the width of the inspection hatch. The cover section can also have a narrower width than the inspection hatch.The thickness of the panel section is preferably less than 30% of the niche depth, preferably less than 20% of the niche depth, and preferably less than 10% of the niche depth. Within the scope of the invention, the niche depth is the horizontal distance between one of the panel sides of the door leaf in the fully open position and the direction of the preferably parallel niche wall.

[0051] The plaster profile can extend over the entire length and surface of the walls surrounding the niche. This allows for the use of a niche with a particularly shallow depth.

[0052] In a third embodiment, in addition to a pivoting or removable inspection flap, the door alternatively or additionally has a hinged lock cover which, in a pivoted-in position, conceals a door latch and / or a bolt of the door pivoted into the recess. The lock cover has a lock cover side which, when closed, is flush with the cover side of the door leaf. A lock cover hinge is arranged on the end face facing away from the door leaf when the lock cover is fully pivoted into the recess. If the pivoted-in door has a door rebate, the lock cover can also at least partially conceal the door rebate when pivoted in, so that the door rebate undercuts the lock cover in the recess. By concealing the door latch and the door rebate, an attractive visual appearance of the concealed recess is achieved.The door is then barely noticeable in the swung-in position.

[0053] The lock cover can be pivoted out or opened independently of the door to provide access to the door latch and locking mechanism. This provides easy access to the door latch and locking mechanism for maintenance purposes.

[0054] It is also possible for the lock panel to be moved into a fully extended position when the door is swung out. For this purpose, a force transmission element can be provided that presses against the lock panel when the door is swung out, swinging it out at least partially. The door rebate can serve as a force transmission element and press against the lock panel when the door is closed, causing it to swing out partially or completely. It is also possible for a door latch to serve as a force transmission element and press against the lock panel when the door is closed, causing it to swing out partially or completely. In this way, a sliding edge is formed between the door and the lock panel.

[0055] It may be advantageous for the lock face to have a force-generating element that exerts a force such that the lock face is held in the fully retracted position or pushed into the retracted position. When the door is closed, i.e., swung out, the lock face is swung out until the door rebate and / or the door latch pass the lock face and are no longer in contact with the lock face. While the door is fully closed, the lock face is then automatically swung back in. This prevents the lock face from protruding into the doorway and creating an obstruction.

[0056] For example, a gas spring, a gas spring, or a torsion spring can be used as the force-generating element. The force-generating element can also be integrated into the hinge, as is common with torsion hinges, for example.

[0057] The width of the lock cover is smaller than the door leaf width. The width of the lock cover is preferably between 1% and 40% of the door leaf width, more preferably between 2% and 25% of the door leaf width, and most preferably between 3% and 15% of the door leaf width.

[0058] Preferably, the lock cover is narrower than the access panel. The width of the lock cover can be between 40 mm and 200 mm, preferably between 80 and 150 mm.

[0059] The lock cover is preferably the same height as the door leaf. The lock cover is preferably thinner than the door leaf. Alternatively, the lock cover can also be the same thickness as the door leaf.

[0060] With the door according to the invention, when installed in a niche, the door hinge of the fully pivoted door can be concealed by the inspection flap and by pivoting out or removing the inspection flap, the door hinge can be easily accessible for maintenance purposes.

[0061] Further features of the present invention will become apparent from the following description of the invention with reference to the drawings and the drawings themselves.

[0062] The invention is explained in more detail below by way of example with reference to the drawings. The drawings show schematically: Figure 1a door for installation in a niche in a fully open position in a horizontal sectional view, Figure 2which in Figure 1shown door in a fully closed position, Figure 3a a door with a door fitting which is in an open position, and an inspection flap with a fitting which has a closed position, Figure 3b the door and the inspection flap from Figure 3a , during the closing process of the door, in a first closing position, Figure 3c the door and the inspection flap Figure 3a , during the closing process of the door, in a second locking position, Figure 3dthe door from Figure 3a in a fully closed position and the inspection hatch Figure 3a which is fully opened, Figure 4the door fitting and the fitting from the Figures 3a - 3d each in a single detailed view and in a joint view, Figure 5 shows a second embodiment of a door for installation in a niche in a fully open position in a horizontal sectional view and Figure 6 shows the Figure 5door shown in a fully closed position.

[0063] A first embodiment of a door 1 for installation in a niche 2 is explained below. Such a door 1 has a door leaf 3 and a door hinge 4, via which the door 1 is pivotally connected to a door frame 5 ( Figure 1 , Figure 2 ).

[0064] In a fully open position ( Figure 1 ) the door leaf 3 is fully recessed into the recess 2 and the door 1 completely opens a passage 6. In the fully open position, the door 1 is completely pivoted into the recess 2.

[0065] The door leaf 3 has a cover side 7 which faces the niche 2 in a fully pivoted position ( Figure 1 ) and a niche side 8 which, in the fully swung-in position of the niche 2 ( Figure 1). In the pivoted-in position of the door 1, the panel side 7 is flush with an end wall 9 bordering the niche 2 on the door hinge side and a boundary wall 10 facing away from the door hinge 4 of the niche 2.

[0066] For manual operation of door 1, i.e., for manual opening and closing by a user, the door leaf 3 has a recessed recess 11 on the face side. The recessed recess 11 is recessed into the door leaf 3 such that a handle 12 of the recessed recess 11 is flush with the face side 7. On the recess side 8, the door 1 has a standard door handle 13.

[0067] A lock case 14 with a door latch 15 is embedded in the door leaf 3 on a front side 21 facing away from the door hinge 4. The lock case 14 can additionally have a bolt with which the door 1 can be held in a closed position ( Figure 2 ) can be locked.

[0068] Between the door hinge side end wall 9 and a hinge side end face 16 or the end face 16 of the door leaf 3, in the fully pivoted position of the door 1 ( Figure 1 ) an inspection flap 17 is arranged. The inspection flap 17 is pivotally connected to the door hinge side end wall 9 via a hinge 18 and can be opened from a fully pivoted position ( Figure 1 ) into a fully extended position (Figure 2). The inspection flap 17 has an access side 19 that is flush with the cover side 7 and the end wall 9 or boundary wall 10 bordering the niche 2.

[0069] The hinge 18 can apply a closing force, from which the inspection flap 17 can be fully pivoted in the position ( Figure 1). In order to swing out the inspection flap 17, the closing force must then be overcome. The hinge 18 can further be designed such that, from a defined opening angle, the hinge 18 exerts a force on the inspection flap 17 which causes the inspection flap 17 to swing out completely. Thus, in order to open the inspection flap 17, the closing force must first be overcome, wherein, for example, from an opening angle of the inspection flap 17 of 15°, the hinge 18 exerts a force on the inspection flap 17, whereby the inspection flap 17 is automatically swung out completely.

[0070] In the fully retracted position of the inspection flap 17 and with the door 1 fully retracted ( Figure 1), the inspection flap 17 conceals the door hinge 4 and the hinge-side door frame 5 as seen from the passage 6. This creates a particularly narrow gap between the inspection flap 17 and the end wall 9. The inspection flap 17 has a bevel 20 on the end face 16 facing away from the hinge 18. The bevel 20 makes it possible to keep the distance between the door leaf 3 and the inspection flap 17 particularly small. The narrow gap widths create an attractive appearance.

[0071] The inspection flap 17 has the same height as the door leaf 3 in order to achieve a particularly uniform and attractive appearance of the door 1. In this way, the door hinge 4 and the hinge-side door frame 5 can be completely concealed by the inspection flap 17 ( Figure 1). For maintenance purposes, access to the door hinge 4 can be achieved by manually swinging out the inspection flap 17 when the door 1 is fully swung in.

[0072] A lock cover 22 is arranged between the door latch-side boundary wall 10 and the door latch-side end face 21 of the door leaf 3. The lock cover 22 is pivotally connected to the boundary wall 10 via a lock hinge 23. The lock cover 22 has a pivoted position into the recess 2 ( Figure 1), in which the lock panel 22 covers the door latch 15 as seen from the passage 6. This pivoted-in position can also be referred to as the closed position of the lock panel 22. The lock hinge 23 can exert a closing force on the lock panel 22, which pushes the lock panel 22 into the pivoted-in position. However, it is also possible that the lock hinge 23 merely presents resistance to the opening of the lock panel 22. This resistance must then be overcome when the lock panel 22 is pivoted out. If the lock panel 22 is pivoted out of the recess 2, the lock hinge 23 can engage in a fully pivoted-out position to simplify access to the door latch 15. Outside the fully pivoted-out position, the lock hinge 23 can exert a closing force on the lock panel 22, which pushes the lock panel 22 into the fully pivoted-in position ( Figure 1 ).

[0073] The lock cover 22 can be swung out manually, i.e. by hand, by a user in order to gain access to the door latch 15, for example for service or maintenance purposes.

[0074] The lock cover 22 has a lock cover side 24 which, in the pivoted-in position of the lock cover 22 and when the door 1 is fully pivoted in ( Figure 1 ) is flush with the boundary wall 10 and the cover side 7.

[0075] The lock cover 22 has a projection 25 which, when the door 1 is fully pivoted in and the lock cover 22 is pivoted in ( Figure 1 ) rests against a door rebate 26 of the door leaf 3. A narrow gap is formed between the lock cover 22 and the boundary wall 10. The lock cover 22 also forms a narrow gap with the door leaf 3. The narrow gap widths result in a visually appealing appearance.

[0076] The lock cover 22 can have the same height as the door leaf 3 in order to achieve a particularly uniform and attractive appearance of the door 1 in the fully pivoted position. If the inspection flap 17, the door leaf 3, and the lock cover 22 each have the same height, the recess 2 is completely concealed, and the door 1 fits attractively into the end wall 9 or boundary wall 10 bordering the recess 2.

[0077] The door 1 can be moved manually or automatically into a fully swung-out position ( Figure 2), in which the door leaf 3 completely blocks the passage 6. The door latch 15 is then engaged in a strike plate 27. The niche side 8 is flush with the hinge side 28 of the door frame 5. The door rebate 26 rests against a seal 29 of the door frame 5. The seal 29 can be designed as a soundproofing, fireproofing, and / or smokeproof seal. To move the door 1 from the position fully pivoted into the niche 2 to the fully pivoted out position, a door closer can be provided which can be triggered manually or electrically and causes the door 1 to close completely.

[0078] If door 1 is in the fully closed position ( Figure 2), the inspection flap 17 is in its fully swung-out position and partially protrudes into the passage 6. The lock cover 22 can then be in the fully swung-in or in a swung-out position (dashed lines in Figure 2 ) condition.

[0079] If the door 1 is moved into the fully closed position, the closing of the door 1 simultaneously causes the inspection flap 17 ( Figure 3a to Figure 3d ). The door leaf 3 and the inspection flap 17 are mechanically coupled. A fitting 30 is arranged on the bottom and / or top of the inspection flap 17 ( Figure 3a , Figure 4). The fitting 30 has a strip-shaped base body 31 designed for attachment to the lower or upper end face 16 of the inspection flap 17, wherein the width of this base body 31 is not greater than the thickness of the inspection flap 17. This allows the base body 31 to be attached to the inspection flap 17 without itself protruding. For attaching the fitting 30, two or more mounting holes 32 are provided, through which screws can pass.

[0080] The strip-shaped base body 31 has a sliding end 33 and a mounting end 34. A sliding body 35 is attached to the sliding end 33 of the strip-shaped base body 31, forming a sliding edge 36. In a plan view of the fitting 30, the sliding edge 36 runs obliquely to the longitudinal direction of the fitting 30. At the point of the sliding edge 36 furthest from the mounting end 34, a stop body 37 is provided, which projects laterally from the sliding body 35 and forms a stop edge 38 that is approximately aligned with a longitudinal side edge 44 of the base body 31 and forms an obtuse angle with the sliding edge 36. The sliding edge 36 has a rounded sliding edge corner 39 at its end, which merges into a longitudinal sliding edge 40. The stop body 37 has an operating element 41 which protrudes beyond the access side 19 of the inspection flap 17 and projects into the passage 6.The operating element 41 has a rounded outer edge 42 and a recess 43 which can be gripped by means of a tool for pivoting the inspection flap 17.

[0081] A door fitting 45 is provided on the door 1 and interacts with the fitting 30. The door fitting 45 has a strip-shaped base body 46 designed for attachment to the lower or upper end face 16 of the door leaf 3. The width of this base body 46 is no greater than the thickness of the door leaf 3. The base body 46 can therefore be attached to the door leaf 3 without itself protruding. For attaching the door fitting 45, two or more fastening holes 32 are formed, through which screws can pass. The door fitting 45 is longer than the fitting 30. However, it is also possible for the door fitting 45 and the fitting 30 to be the same length.

[0082] The door fitting 45 has a sliding edge 48 on the door hinge side end face 47 which is rounded in plan view and which merges into a longitudinal sliding edge 49 which is formed on the panel side long side of the door fitting 45.

[0083] When the door 1 is pivoted in, the stop edge 38 of the pivoted-in inspection flap 17 rests against the longitudinal sliding edge 49 of the door fitting 45 and thus limits the pivoting movement of the inspection flap 17.

[0084] The operating element 41 can be grasped to manually pivot the inspection flap 17 open and closed. The operating element 41 can also be grasped via the recess 43 using a tool, allowing the inspection flap 17 to be pivoted particularly easily.

[0085] If the door 1 is swung out of the recess 2, the door fitting 45 hits the sloping sliding edge 36 of the fitting 30 via the rounded sliding edge 48. The rounded sliding edge 48 presses on the sloping sliding edge 36 of the fitting 30 in such a way that the inspection flap 17 is swung out of the swung-in position ( Figure 3a ) in opening direction 50 ( Figure 3b ) is swung open. The sliding edge 48 slides along the inclined sliding edge 36 in the direction of the sliding edge corner 39. With increasing swinging of the door leaf 3, an increasing swing angle of the inspection flap 17 is achieved in this way ( Figures 3a - 3d ).

[0086] If the sliding edge 48 reaches the sliding edge corner 39 of the fitting 30, a further swinging out movement of the door 1 causes the sliding edge corner 39 to slide over the sliding edge 48 onto the longitudinal sliding edge 49. When the door 1 is further closed or swung out, the longitudinal sliding edge 49 presses onto the sliding edge corner 39, causing the inspection flap 17 to swing out further ( Figure 3c ). Via the door fitting 45 and the fitting 30, the door leaf 3 is thus mechanically coupled or operatively connected to the inspection flap 17 when the door 1 is closed. Closing the door 1 then also causes the inspection flap 17 to swing out. The fitting 30 slides completely over the door fitting 45 when the door 1 is swung out in the longitudinal direction.

[0087] It is also possible for the door fitting 45 to have an inclined sliding edge 36 on the hinge side, which presses against the inclined sliding edge 36 of the fitting 30 when the door 1 is swung open. Alternatively, the door fitting 45 can form an inclined sliding edge 36 on the hinge side, and the fitting 30 can form a rounded or flat front sliding edge 36, wherein the inclined sliding edge 36 of the door fitting 45 presses against the front sliding edge 36 of the fitting 30 when the door 1 is swung out, causing the inspection flap 17 to swing out. In this case, individual sliding edges between the door fitting 45 and the fitting 30 can be exchanged such that swinging out the door 1 causes the inspection flap 17 to swing out.

[0088] The coupling via the fitting 30 and the door fitting 45 prevents the door leaf 3 and the inspection flap 17 from directly touching each other. This prevents damage to the door leaf 3 and the inspection flap 17, particularly in the visible area. Furthermore, the fitting 30 and the door fitting 45 can be mounted on the top and / or bottom of the door leaf 3 or the inspection flap 17 in such a way that the fitting 30 and the door fitting 45 are outside the visible area or are adapted to the appearance of the door 1 in such a way that they are not or hardly noticeable.

[0089] If door 1 is fully swung out ( Figure 3d ), the hinge 18 can exert an opening force on the inspection flap 17 such that the inspection flap 17 is swung out completely ( Figure 2 ).

[0090] A second embodiment is explained below. The second embodiment, like the first embodiment, comprises a door 1 with a door leaf 3 and a door frame 5. The door leaf 3 is pivotally connected to the door frame 5 via one or more multi-joint hinges 51 ( Figure 5 , Figure 6 ). For example, a concealed four-joint hinge, a cross hinge, or a cup hinge can be used as the multi-joint hinge 51. Instead of a multi-joint hinge 51, other door hinges 4 can also be used.

[0091] The door leaf 3 has a retaining profile 52 on its hinge-side end face 16. The retaining profile 52 is firmly connected to the door leaf 3, for example by means of a screw connection. The retaining profile 52 preferably does not extend over the entire height of the door leaf 3, but only over a partial area. Preferably, two retaining profiles 52 are provided, which are fastened to the door leaf 3 at a distance from one another. A retaining profile 52 can have a height of 20 mm to 400 mm, preferably 50 mm to 200 mm, in the vertical direction. The retaining profiles 52 are advantageously mounted at a different height than the multi-joint hinges 51.

[0092] The inspection flap 17 is magnetically connected to the retaining profile 52. The access side 19 is flush with the cover side 7 of the door leaf 3. The inspection flap 17 has a stop edge 53 that rests against the retaining profile 52 towards the door leaf 3, creating a positive fit. In this way, the inspection flap 17 can be easily positioned vertically to the door leaf 3 and connected to the retaining profile 52 so that the door leaf 3 and the inspection flap 17 are the same distance from the floor of the passage 6. The stop edge 53 can also be used to position the inspection flap 17 horizontally, thereby achieving a minimal gap width between the inspection flap 17 and the door leaf 3.

[0093] The retaining profile 52 can be partially or completely designed as a permanent magnet or can have a permanent magnet. The inspection flap 17 can then be partially or completely designed as a magnetizable body or can have a magnetizable body.

[0094] It is of course also possible for the inspection flap 17 to be partially or completely designed as a permanent magnet or to have a permanent magnet, and for the retaining profile 52 to be partially or completely designed as a magnetizable body or to have a magnetizable body. In this way, an easily manageable magnetic connection between the retaining profile 52 and the inspection flap 17 can be realized.

[0095] When door 1 is fully pivoted into recess 2, inspection flap 17 conceals multi-joint hinge 51 as seen from passage 6. To gain access to multi-joint hinge 51 from passage 6 for maintenance and / or service purposes, inspection flap 17 can be manually released from retaining profile 52. To remove inspection flap 17, all that is required is to overcome the magnetic holding force between inspection flap 17 and retaining profile 52. In this way, inspection flap 17 can be easily removed to gain access to multi-joint hinge 51.

[0096] A plaster profile 54 is attached to the end wall 9 on the door hinge side. The plaster profile 54 has a profile cover side 55 which is flush with the end wall 9 on the door hinge side. The plaster profile 54 is attached to the end wall 9 on the door hinge side and preferably extends over the entire height of the niche 2. The plaster profile 54 is further preferably also applied above the niche 2 and on the boundary wall 10 facing away from the door hinge 4. The plaster profile 54 has a cover section 56. The cover section 56 has an inclined surface 58 on an end side 57 facing away from the end wall 9. The inclined surface 58 ensures that the gap between the plaster profile 54 and the inspection flap 17 can be kept small when the door 1 is fully opened. In this way, a particularly visually appealing appearance of the door 1 is achieved.

[0097] In this second embodiment, a lock cover 22 can also be provided, which is pivotally connected to the door latch side boundary wall 10 via a hinge 23 and covers the door latch 15 ( Figure 5 ).

[0098] When the door 1 is swung out of the recess 2, the inspection flap 17 is swung together with the door leaf 3 around the pivot point or pivot points of the multi-joint hinge 51. In the fully closed position of the door 1, the inspection flap 17 lies parallel to a closing side 59 of the door frame 5 ( Figure 6). A door frame profile 60 can be applied to the lock-side closing side 59 in order to realize a flush finish between the door frame profile 60, the cover side 7 of the door leaf 3 and the access side 19 of the inspection flap 17. The door frame profile 60 can also extend over the closing side 59 of the horizontal section of the door frame 5 running above the door leaf 3. In this way, a flush finish is achieved between the door leaf 3, the inspection flap 17 and the door frame profile 60 in the fully closed position of the door 1 ( Figure 6 ) reached.

[0099] Preferably, the joint between the plaster profile 54 and the cover side 7 of the door leaf 3 in the fully swung-out position of the door 1 ( Figure 6 ) has the same width as the joint between the plaster profile 54 and the inspection flap 19 in the swung-in position of the door 1 ( Figure 5 ).

[0100] In the swung-out position of door 1 ( Figure 6 ) the lock cover 22 can be in a swung-out position (dashed lines) or in a swung-in position (solid lines). List of reference symbols

[0101] 1 Door 2 Niche 3 Door leaf 4 Door hinge 5 Door frame 6 Passage 7 Cover side 8 Niche side 9 End wall 10 Boundary wall 11 Hall recess 12 Handle 13 Door handle 14 Lock case 15 Door latch 16 Front side 17 Inspection flap 18 Hinge 19 Access side 20 Chamfer 21 Front side 22 Lock cover 23 Lock hinge 24 Lock cover side 25 Projection 26 Door rebate 27 Strike plate 28 Hinge side 29 Seal 30 Fitting 31 Base body 32 Fixing hole 33 Sliding 34 Mounting end 35 Sliding body 36 Sliding edge 37 Stop body 38 Stop edge 39 Sliding edge corner 40Sliding edge 41Operating element 42Outer edge 43Recess 44Longitudinal side edge 45Door fitting 46Base body 47End face 48Sliding edge 49Longitudinal sliding edge 50Opening direction 51Multi-joint hinge 52Retaining profiles 53Stop edge 54Plaster profile 55Profile face 56Face section 57End face 58Beveled surface 59Closing side 60Door frame profile

Claims

1. A door (1), in particular a niche door, for mounting in a niche (2), preferably for automatically and completely closing a passageway (6), in particular as a fire door, comprising a door panel (3) comprising a niche side (8) which, in the mounted state in a fully open position of the door (1), faces the niche (2), and comprising a facing side (7) which, in the mounted state in the fully open position of the door (1), faces away from the niche (2), at least one door hinge (4) for pivotably connecting the door panel (3) to a door frame (5), the door hinge (4) being arranged in the region of a hinge-side end face (16) of the door panel (3), characterized in that an inspection flap (17) is provided, which has at least one hinge (18) for a hinged connection to the door frame (5) or to a cover wall (9) bounding the niche (2), and which, in the mounted state with the door (1) fully open, adjoins approximately flush with the edge of the door panel (3), by means of which the door panel (3) is connected to the door hinge (4) to the door frame (5), so that the inspection flap (17) blocks the view to the door hinge (4) when the door (1) is open, and the inspection flap (17) in the mounted state is pivotably mounted independently of the door (1).

2. The door (1) according to claim 1, characterized in that the inspection flap (17) and the door (1) are arranged in relation to one another such that, when the door (1) is being closed, it strikes against the inspection flap (17) such that it pushes open the inspection flap (17).

3. The door (1) according to any one of the preceding claims, characterized in that the inspection flap (17) has a chamfer (20) on the end face (16) facing away from the hinge (18), an angle of between 10° and 80° being formed between the chamfer (20) and the access side (19).

4. The door (1) according to any one of the preceding claims, characterized in that the inspection flap (17) has a fitting (30) which, when the inspection flap (17) is pivoted inwards, limits the pivoting movement of the inspection flap (17) relative to the door panel (3) and / or can be used as an operating element (41).

5. The door (1) according to any one of the preceding claims, characterized in that a sliding edge (36) is arranged between the door panel (3) and the inspection flap (17), which sliding edge (36), when the door (1) is being closed, transfers a force from the door panel (3) to the inspection flap (17), as a result of which the inspection flap (17) is pushed open.

6. The door (1) according to claim 6, characterized in that the sliding edge (36) is formed by the chamfer (20) or by the fitting (30).

7. The door (1) according to claim 6 or 7, characterized in that the door (1) has a door fitting (45), at least one sliding edge (36) being formed between the door fitting (45) and the fitting (30), which sliding edge (36), when the door (1) is being closed, transfers a force from the door panel (3) to the inspection flap (17), as a result of which the inspection flap (17) is pushed open.

8. A door (1), in particular a niche door, for mounting in a niche (2), preferably for automatically and completely closing a passageway (6), in particular as a fire door, comprising a door panel (3) comprising a niche side (8) which, in the mounted state in a fully open position of the door (1), faces the niche (2), and comprising a facing side (7) which, in the mounted state in the fully open position of the door (1), faces away from the niche (2), at least one door hinge (4) for pivotably connecting the door panel (3) to a door frame (5), the door hinge (4) being arranged in the region of a hinge-side end face (16) of the door panel (3), characterized in that an inspection flap (17) is provided, which is detachably fastened to the door (1) and adjoins approximately flush with the edge of the door panel (3), by means of which the door panel (3) can be connected to the door hinge (4) to the door frame (5), so that the inspection flap (17) in the mounted state blocks the view to the door hinge (4) when the door (1) is open.

9. The door (1) according to claim 8, characterized in that the inspection flap (17) is detachably connected magnetically to the door panel (3) in an indirect or direct way.

10. The door (1) according to any one of claims 8 or 9, characterized in that a plaster profile (54) is provided which is arranged on the cover wall (9) that adjoins flush with the access side (19), the cover wall (9) being adjacent to the hinge-side end face (16) of the inspection flap (17) and the plaster profile (54) partially concealing the niche (2).

11. The door (1) according to any one of the preceding claims, characterized in that the door (1) has a hinged lock plate (22) which, in a position pivoted into the niche (2), conceals a door latch (15) of the door (1) pivoted into the niche (2), the lock plate (22) comprising a lock plate side (24) which, in the position pivoted inwards, preferably adjoins flush with the facing side (7) of the door panel (3).

12. The door (1) according to claim 11, characterized in that the lock plate (22) can be transferred to a position pivoted outwards when the door (1) is being closed.