Balcony system having a counterforce unit

Abstract

A balcony system for use with a building opening of a building structure is provided. The balcony system comprises a balcony unit, which is designed to protrude out of the building opening, a counterforce unit, which is designed to compensate for forces acting on the balcony unit, and a first connecting element, which connects the balcony unit and the counterforce unit. The counterforce unit comprises a base unit, an attachment unit on the base unit, and a second connecting element. The base unit is designed to be installed so as to be fixed in position relative to the building structure, and is typically designed to be installed so as to be fixed in position on a floor of the building structure. The first connecting element connects the balcony unit and the attachment unit. The second connecting element connects the attachment unit and the base unit. The attachment unit can move relative to the base unit. The balcony unit can move relative to the attachment unit. The attachment unit comprises a first rail which is both part of the first connecting element and part of the second connecting element.

Description

BALCONY SYSTEM WITH COUNTERFORCE UNIT AREA

[0001] Embodiments of the present invention relate to a balcony system, more specifically to a balcony system with a counterforce unit, wherein the counterforce unit typically comprises a counterweight. Furthermore, some embodiments relate to a temporary balcony system, wherein the balcony system can additionally provide the functionality of a piece of furniture. Further embodiments relate to the use of such balcony systems as temporary balconies for building openings, for example, for windows, and to methods for setting up a temporary balcony. BACKGROUND

[0002] Many buildings and apartments, especially older buildings, don't have their own outdoor balconies. However, there is generally a demand for outdoor balcony space, as this improves the quality of living and life.

[0003] Temporary balconies are known for providing apartments without a conventional balcony with an outdoor balcony area. EP 2 649 249 B1 discloses a balcony system suitable for use with a building opening in a building structure, typically a window. This balcony system comprises a balcony unit configured to protrude from the building opening, a counterforce unit configured to compensate for forces acting on the balcony unit without interfering with the building structure, and a connecting element connecting the balcony unit and the counterforce unit. The balcony system as a whole, with all its parts including a counterweight, is mobile, i.e. movable relative to the building structure, in particular relative to a floor of the building structure. Therefore, assembly may require strength and care from the user, particularly when moving the mobile balcony system and when positioning and aligning it in front of the window.It may be difficult for a single person to move the mobile balcony system across the room and find a stable, wobble-free position for use as a temporary balcony, especially if the floor is still uneven. Careless movement of the mobile balcony system could also result in damage to the building wall by ramming. Careless, slanted alignment could, for example, damage the window if the balcony unit becomes jammed during assembly or disassembly. Moving the mobile balcony system can also lead to increased wear and tear on the floor. In addition, it is It is conceivable that the mobile balcony system could be pushed into places on the building structure that are not statically designed to withstand this load, which would pose a danger to life and limb.

[0004] In this regard, EP 3 887 611 A1 further discloses a balcony system which comprises a balcony unit and a counterforce unit and has a first connecting element which connects the balcony unit and the counterforce unit. The counterforce unit comprises a base unit, an attachment unit on the base unit and a second connecting element. The base unit is designed for a stationary installation with respect to the building structure, typically for a stationary installation on a floor of the building structure. The first connecting element connects the balcony unit and the attachment unit. The second connecting element connects the attachment unit and the base unit. The attachment unit is horizontally movable relative to the base unit by means of the second connecting element, while the balcony unit can be horizontally movable relative to the counterforce unit, specifically to the attachment unit, by means of the first connecting element.

[0005] Fig. 14 shows a balcony system 100' known from EP 3 887 611 A1, in which the balcony unit 110' is movable in the longitudinal direction relative to the attachment unit 225' and the attachment unit 225' is movable in the longitudinal direction relative to the stationary base unit 220', as indicated by the corresponding double arrows. The balcony system is shown in Fig. 14 in the balcony state. The first connecting element 130' has a first connecting region 131'. The balcony unit 110' has a floor 112' and a retaining device 114' (parapet element, railing), wherein the floor 112' can be designed as a linearly movable clamped support which is linearly movable relative to the attachment unit 225' but is otherwise clamped in the first connecting region 131'. The second connecting element 230' has a second connecting region 231'. The attachment unit 225' can comprise a part 226' that sits on the base unit, wherein the attachment unit 225', orThe seated part 226' can be designed as a linearly movable, clamped support that is linearly movable relative to the base unit 220' but is otherwise clamped in the second connecting region 231'. The attachment unit 225' can comprise a support element 228'. The support element 228' can support the seated part 226', so that the attachment unit 225' can be a linearly movable support that is otherwise clamped in the second connecting region 231' and supported by the support element 228'. The balcony system 110' has a counterweight 125' arranged in the attachment unit 225'.

[0006] The fixed positioning of the base unit ensures that the balcony system's orientation, particularly its longitudinal direction, is fixed. At the same time, a suitable distance from the building opening is determined. This means that unlike a fully mobile balcony system, there is no on careful handling, positioning and alignment by the user, e.g. to ensure stable, wobble-free installation or to avoid damage to the building wall or window. Also, with a stationary base unit, the entire weight of the balcony system does not have to be moved, which makes assembly and dismantling much easier. At the same time, the mobility of the add-on unit relative to the base unit ensures that a sufficient distance can be maintained from the building opening that access to the building opening is not permanently blocked and that the building opening can be used as intended, e.g. in the case of a window, it can be opened and closed. In a balcony system with a stationary base unit and an add-on unit that is movable relative to it, the floor areas of the building structure that are statically loaded by the balcony system are fixed.It can be ensured that these floor areas are statically designed to withstand this load.

[0007] Despite this development, there is still a need to create an improved balcony system that is easier to assemble and disassemble, that can provide a larger balcony area, and that can be retrofitted in a space-saving and cost-effective manner in buildings without conventional balconies. SUMMARY

[0008] In light of the above, a balcony system, the use of such a balcony system, and a method for establishing a temporary balcony are provided according to the independent patent claims. Further advantageous embodiments, which can be combined with one another in any suitable manner, can be found in the dependent claims, the drawings, and the description.

[0009] According to one embodiment, a balcony system is provided for use with a building opening of a building structure, typically a window. The balcony system comprises a balcony unit configured to protrude from the building opening, and a counterforce unit. The counterforce unit comprises a base unit and an attachment unit. The counterforce unit is configured to compensate for forces acting on the balcony unit. The base unit is configured for stationary installation with respect to the building structure, typically for stationary installation on a floor of the building structure. The balcony unit and the attachment unit are connected via a first connecting element. The attachment unit and the base unit are connected via a second connecting element. The attachment unit is movable relative to the base unit. The balcony unit is movable relative to the attachment unit.The attachment unit comprises a first rail which is part of both the first connecting element and the second connecting element.

[0010] Another embodiment includes the use of a balcony system described herein as a temporary balcony for a building opening, typically a window.

[0011] According to a further embodiment, a method for setting up a temporary balcony is provided. The method comprises setting up a balcony system described herein in a building structure having a building opening, wherein setting up the balcony system comprises setting up the base unit of the balcony system stationary with respect to the building structure. The method further comprises moving the attachment unit relative to the base unit such that the balcony unit connected to the attachment unit is moved toward the building opening, and moving the balcony unit relative to the attachment unit such that the balcony unit protrudes from the building opening.The movement of the add-on unit relative to the stationary base unit and the movement of the balcony unit relative to the add-on unit take place via a first rail, which serves both to connect the add-on unit and the base unit and to connect the balcony unit and the add-on unit. BRIEF DESCRIPTION OF THE ILLUSTRATIONS

[0012] The above-mentioned and other detailed aspects are further elaborated in the description and, at least in part, explained with reference to the figures. The figures show the following: Fig. 1 shows a schematic side view of a balcony system according to embodiments described herein; Fig. 2 shows a side view of a balcony system according to a method described herein embodiment; Fig. 3 shows a cross-sectional view of the balcony system according to the embodiment of the Fig. 2; Fig. 4 shows an enlarged section of Fig. 3; Fig. 5 shows a partially exploded view of the balcony system according to the embodiment of Fig. 2 in perspective view; Figs. 6-7 show the balcony system according to the embodiment of Fig. 2 in perspective view in different states of assembly and disassembly; Fig. 8 shows an embodiment of a balcony system in perspective view; Figs. 9-10 show embodiments of a balcony system in side view; Figs. 11-13 show an example of a restraint device that can be used in the embodiments of the balcony system; Fig. 14 shows a previously known balcony system. DETAILED DESCRIPTION

[0013] Within descriptions of the figures, like reference symbols refer to like or comparable components. Generally, only the differences between individual embodiments are described. The figures are not necessarily to scale and are for illustrative purposes only.

[0014] The term “statically closed system” or, synonymously, “statically self-contained system” used herein means that such a system is capable of freestanding, i.e., it only requires the floor on which it stands to at least compensate for its own weight. A statically closed balcony system can typically not only compensate for its own weight without tipping, but also for the weight of a load (up to a predetermined maximum load) and, if applicable, also for lateral forces. The term “statically closed system” does not exclude the possibility that such a system, although in principle capable of freestanding, can nevertheless transfer forces to the building structure at points other than its base, e.g. by means of pressing devices as described in EP 2 649 249 B1. Embodiments of statically closed balcony systems are also shown and described in EP 3 887 611 A1.The contents of EP 2 649 249 B1 and the contents of EP 3 887 611 A1 are incorporated herein by reference in their entirety, at least to the extent that these contents do not conflict with features of the embodiments described herein. The statically closed system does not necessarily have to be freestanding, but it must have the capability to do so.

[0015] The term "non-interfering with the building structure" used herein means that a corresponding non-interfering with the building structure system is designed and configured for connection to a building structure without entailing any interference with the building structure. Interference with the building structure particularly occurs when the system includes screws, bolts, nails, anchors, or similar fasteners that penetrate the building structure to connect the system to the building structure, or are intended to do so. In contrast, pressing devices, e.g., stamps, that merely press against the building structure, e.g., laterally against a building opening, and are released after use, are not considered to be interfering with the building structure.

[0016] A system is "essentially structurally inert" if it intervenes in the building structure with at most one or more structurally insignificant parts. The one or more parts are structurally insignificant if, alone or in combination, they cannot support the system's own weight; in the case of a balcony system, they may not support the system's own weight plus a specified maximum load that may arise from safety regulations. For example, a statically closed balcony system as defined above, which is essentially freestanding but to which a structurally insignificant screw or anchor connection to the building structure is added, is still considered essentially structurally inert.

[0017] According to embodiments described herein, a balcony system is provided. The balcony system is configured for use with a building opening of a building structure. The building opening may typically be a window. Windows, at least in living spaces, have a minimum clearance (sill height) from the floor for safety reasons, which is typically more than 80 cm. However, older buildings sometimes have a clearance of only 60 cm. A balcony system for use with a window of a building structure is suitable if it takes this clearance into account, e.g. at least 60 cm or at least 80 cm. The building opening may also be a floor-to-ceiling window, which may have only a small clearance from the floor, e.g. less than 5 cm.

[0018] The balcony system can be a statically closed system. According to some embodiments, the balcony system is substantially free of structural interference or even non-structural interference. According to further embodiments, the balcony system is statically closed and substantially non-structural interference. According to some embodiments, the balcony system is a temporary, statically closed, and / or non-structural balcony system.

[0019] The balcony system comprises a balcony unit. The balcony unit is designed to protrude from the building opening. Typically, the balcony unit is designed to temporarily protrude from the building opening. In this case, the balcony unit can be movable relative to other components of the balcony system. The balcony unit can be movable longitudinally, i.e. in particular horizontally, relative to other components of the balcony system. The balcony unit can be movable in particular relative to a counterforce unit, wherein the balcony unit can be movable out through the building opening and back in again. The balcony unit, together with an attachment unit of the counterforce unit, can be movable towards and away from the building opening, while a base unit of the counterforce unit remains stationary with respect to the building structure, in particular stationary at a distance from the building opening.The balcony unit can be movable relative to the attachment unit, in particular in the horizontal direction and especially in the longitudinal direction of the balcony system or the balcony unit. The balcony unit can be movable relative to the attachment unit, in particular, when the attachment unit has reached its extended end position, in which the front end of the attachment unit has moved towards the building opening. The balcony unit can be configured so that the balcony unit is horizontally movable when and only when the attachment unit has reached its extended end position. The balcony unit can be moved out of the building opening by the relative movement to the attachment unit.

[0020] In the state in which it protrudes from the building opening, the balcony unit forms the balcony of the balcony system. In the following, this is described with the term “the balcony unit in its balcony state”. In contrast to this state, the balcony unit can, for example, be in a retracted state in which it can even be disassembled into parts (such as the floor, parapet / railing or even railing sections), whereby these parts can be folded and / or retracted. The balcony system is in the balcony state when the add-on unit protrudes beyond the base unit by a predetermined length and the balcony unit protrudes beyond the add-on unit by a predetermined length, in particular when the add-on unit has been moved towards the building opening and the balcony unit protrudes from the building opening. The balcony system is in a compacted state when both the balcony unit and the add-on unit are retracted.The balcony system is in the assembly state when it is not in the balcony state and not in the compacted state, e.g. when the attachment unit has been moved towards the building opening but the balcony unit has not (yet) been pushed out through the building opening.

[0021] The direction in which the balcony unit is movable relative to the counterforce unit, or in which the top unit is movable relative to the base unit, is referred to as the longitudinal direction, and dimensions in this direction are referred to as lengths. “Forward” refers to the direction in which the top unit and balcony unit are extended to erect the balcony, and “backward” refers to the direction in which the top unit and balcony unit are retracted to compact the balcony system. The terms “front” / “back” or “front area” / “rear area,” etc., should be understood accordingly. The transverse, or lateral, direction is perpendicular to the longitudinal direction and, like the longitudinal direction, extends in a horizontal plane. Left and right should be understood as referring to a longitudinal view looking forward.The terms "inside" and "outside" and similar expressions should be understood with reference to the transverse direction. "Inside" is closer to the center of the balcony system in the transverse direction than "outside." Accordingly, "inside" points toward the center of the balcony system in the transverse direction, while "outside" points away from the center of the balcony system in the transverse direction. Dimensions in the transverse direction are referred to as widths. The vertical direction is perpendicular to the longitudinal and transverse directions, with dimensions in the vertical direction being referred to as heights. Regarding the vertical, the terms "up," "down," etc., are used. A relative movement of the balcony unit relative to the counterforce unit, or a relative movement of the attachment unit relative to the base unit, is a horizontal movement. If the base unit is height-adjustable, adjusting the height of the base unit is a vertical movement.

[0022] The balcony system includes a counterforce unit. The counterforce unit is designed to compensate for forces acting on the balcony unit. Such forces can, in particular, be weight forces, e.g., the weight of the balcony unit and, if applicable, other loads, such as people. However, lateral forces can also occur and be compensated for, e.g., forces that arise when people act on a parapet of the balcony unit or when wind acts on the balcony unit (wind loads). Compensation of forces acting on the balcony unit means compensation up to specified maximum forces. These maximum loads can, for example, be specified by DIN 1055. DIN 1055 is incorporated herein by reference in its entirety. Typically, the specified maximum forces include a specified maximum load similar to that for conventional balconies connected to the building structure.In addition, specified maximum lateral forces may also be specified, which must be compensated for safety reasons. Compensation of forces also includes compensation of the torques associated with these forces.

[0023] The balcony system comprises a first connecting element that connects the balcony unit and the counterforce unit, in particular the balcony unit and the attachment unit of the counterforce unit. The balcony unit can be horizontally movable relative to the counterforce unit, specifically relative to the attachment unit, by means of the first connecting element, in particular in the longitudinal direction. Forces acting on the balcony unit can be transferred to the counterforce unit, in particular to the attachment unit, by means of the first connecting element. The first connecting element can connect the balcony unit and the attachment unit in a first connecting region. The counterforce unit can be configured to compensate for a large portion of the forces acting on the balcony unit, typically even all of the forces acting on the balcony unit, without interfering with the building structure.The weight of the counterforce unit can compensate for the forces acting on the balcony unit.

[0024] The balcony system, in some designs, can provide a balcony without requiring structural changes to the building. Typically, the balcony system can be used without requiring any structural connections to the building structure or any connected or attached parts. This makes the balcony system suitable for most average apartments. At the same time, expensive conversion costs are often saved. Safe use is possible, especially if the balcony system is structurally closed. The counterforce unit connected to the balcony unit ensures that the balcony is safe for use regardless of user intervention.

[0025] The counterforce unit comprises a base unit and an attachment unit. The base unit is designed for stationary installation with respect to the building structure. The base unit can typically be designed for stationary installation on a floor of the building structure. A stationary installation means that the base unit can be immobile as intended. The base unit can therefore also be described as immobile. If the balcony system is statically closed and has no structurally insignificant connection to the building structure, the balcony system as a whole, and thus also the base unit, could possibly be moved by large forces that may exceed those exerted by a person, similar to a heavy bed or cupboard, but which would also be described as immobile and stationary in the same sense.

[0026] The base unit may have a support surface. The support surface may be located on the underside of the base unit, i.e., on the side facing a floor of the building structure, and may consist of several individual surfaces or be connected. The support surface can transfer at least part of the load of the balcony system and any loads on it, such as people, to the floor of the building structure, thereby statically activating this floor. The support surface may be roughened or rubberized to prevent or at least complicate displacement of the base unit.

[0027] The base unit can have a height that is greater than the height of a part of the add-on unit sitting on the base unit. The height of the base unit and the height of the part of the add-on unit sitting on the base unit can together, to the extent that they add up, make up the height of the counterforce unit. The counterforce unit can have a height that corresponds at least to the parapet height of the building opening, e.g., it can be at least 60 cm or at least 90 cm high. The height of the base unit can be more than 60%, more than 70%, more than 80%, or even more than 90% of the total height of the counterforce unit. The height of the base unit can therefore essentially compensate for the parapet height of the building opening. For building openings in the form of floor-to-ceiling windows or the like, the height of the lower edge of the building opening to be overcome can also be just a few centimeters, e.g., less than 20 cm, less than 10 cm, less than 5 cm, or even 0 cm.

[0028] The attachment unit is movable relative to the base unit. The attachment unit can be horizontally movable relative to other components of the balcony system, in particular in the longitudinal direction. The attachment unit can sit on the base unit. The attachment unit can comprise a seating part that sits on the base unit. The seating part can be substantially cuboid-shaped. The seating part can be plate-shaped. The attachment unit can be a Include a support element which is designed to transmit force to the building structure. In particular, the support element can be designed to transmit force before, during and after a relative movement between the add-on unit and the base unit which is stationary with respect to the building structure. The support element can have a height which is dimensioned such that the lowest point of the support element touches the floor of the building structure when the add-on unit rests on the base unit. The height of the support element can correspond to the height of the base unit. The support element can be arranged on the underside of the part of the add-on unit which rests on the base unit. The support element can be attached as a separate part to the underside of the part on which it rests, whereby the attachment can be detachable or permanent, e.g. screwed, welded or riveted.

[0029] The support element can comprise a roller unit. A roller unit as used herein can have one roller whose axis is mounted in a body of the roller unit, or can have several, in particular two, rollers whose axes are mounted parallel to one another in the body of the roller unit. The body of a roller unit can be made of metal. A roller unit can in particular be a separate component that can be connected to other components, e.g. by screws or other assembly. The roller unit can have one or more axes oriented in the transverse direction of the balcony system, wherein one, two, or even more than two rollers can be arranged on each of the one or more axes. The support element can comprise two or more roller units of the type described, whose axes can be oriented in the transverse direction of the balcony system.The support element can comprise a rolling system with a number of 2, 3, 4 or more roller units. Roller units of the support element can be arranged on the underside of a body of the support element. The body can be cuboid-shaped, for example. The support element can be designed such that the roller(s) of the one or more roller units roll(s) over the floor of the building structure or over a floor plate of a static module of the base unit when the add-on unit is moved relative to the base unit. Alternatively, the support element can be designed such that it can slide over the floor of the building structure or over a floor plate of a static module of the base unit when the add-on unit is moved relative to the base unit. For this purpose, the underside of the body of the support element can be made of a lubricious material, such as felt or other pressure-resistant textiles.

[0030] The attachment unit can be designed as a linearly movable, clamped support relative to the base unit, i.e., as a support that retains one direction of movement while otherwise remaining a clamped support. This one direction of movement is the longitudinal direction, which is a horizontal direction of movement. If the attachment unit is extended and locked in the assembled state, In this state, the add-on unit can be a clamped beam, i.e. a beam that has no degree of freedom of movement. In particular, the part of the add-on unit that sits on the base unit can be designed as a linearly movable clamped beam. The add-on unit, or the part of the add-on unit that sits on the base unit, can be designed as a linearly movable, clamped, supported beam. The support can be provided exclusively by the support element. Alternatively, the add-on unit designed as a clamped beam could be supported partly or exclusively by a static module of the base unit described below or even by the lower side of the building opening, e.g. a ledge or window sill of the building opening. In the latter case, the wall with the building opening would be statically activated and the balcony system would not be statically self-contained.

[0031] The counterforce unit comprises a second connecting element. The second connecting element connects the attachment unit and the base unit. The second connecting element can be configured to transmit forces acting on the balcony unit, which are transmitted from the first connecting element to the attachment unit, to the base unit. The attachment unit can be horizontally movable relative to the (stationary) base unit by the second connecting element, in particular in the longitudinal direction. The second connecting element can connect the attachment unit and the base unit in a second connection area.

[0032] The second connecting element and the first connecting element can together comprise a first rail. The first rail can be part of the first connecting element and part of the second connecting element. The first rail can be a common component of the first and second connecting elements. The balcony system can comprise a common connecting system for connecting the balcony unit to the add-on unit and for connecting the add-on unit to the base unit. The first rail can be a common first rail that serves both to connect the balcony unit to the add-on unit and to connect the add-on unit to the base unit. The add-on unit can comprise the first rail. The first rail can be attached to the underside of the add-on unit. The first rail can be arranged laterally outwards on the underside of the add-on unit.The first rail of the first and second connecting elements can be arranged along the longitudinal direction of the balcony system. The first rail can enable or serve to enable the mobility of the balcony unit and the top unit relative to each other, as well as the mobility of the base unit and the top unit relative to each other.

[0033] The first connecting element can connect the balcony unit and the top unit via the first rail in the first connecting region. The second connecting element can connect the top unit and the base unit via the first rail in the second connecting region. The first connecting region and the second connecting region can extend on different sides of the first rail. The first connecting region and the second connecting region can extend on opposite sides of the first rail. The first connecting region and the second connecting region can extend on opposite, lateral sides of the first rail. The first connecting region can extend on a laterally outer side of the first rail and the second connecting region can extend on a laterally inner side of the first rail.It would also be possible for the first connecting area to extend on a laterally inner side of the first rail and for the second connecting area to extend on a laterally outer side of the first rail. The first rail can have a double-T profile. The first rail can be attached to the underside of the attachment unit or the sitting part of the attachment unit with one of the T-shaped cross sections (flanges, straps) of the double-T profile. A first U-shaped profile half of the double-T profile of the first rail can be directed laterally outwards and a second U-shaped profile half of the double-T profile can be directed laterally inwards. The first connecting area can be located on the first U-shaped profile half of the double-T profile of the first rail and the second connecting area can be located on the second U-shaped profile half of the double-T profile.

[0034] The first connecting element can comprise a first rail system. The second connecting element can comprise a second rail system. The first rail system and the second rail system can comprise the first rail. The first rail can be part of the first rail system and part of the second rail system. The first rail can be a common component of the first and second rail systems. The common connecting system can comprise the first and second rail systems. The first rail system and the second rail system can together comprise a second rail. The second rail can be a common second rail that serves both to connect the balcony unit to the add-on unit and to connect the add-on unit to the base unit. The add-on unit can comprise the second rail. The second rail can be attached to the underside of the add-on unit.The second rail can be arranged laterally on the outside of the underside of the add-on unit. On the underside of the add-on unit, the first rail can be arranged on one lateral outside, and the second rail on the other lateral outside. The first rail and the second rail, both belonging to the first and second rail systems, can both be oriented along the longitudinal direction of the balcony system, i.e., parallel to each other, and can be arranged in... The second rail can be arranged at a distance from each other in the transverse direction. The second rail, together with the first rail, can enable or serve to enable the mobility of the balcony unit and the add-on unit relative to each other, as well as the mobility of the base unit and the add-on unit relative to each other.

[0035] The second connecting element can connect the balcony unit and the top unit via the second rail in the first connecting region. The second connecting element can connect the top unit and the base unit via the second rail in the second connecting region. The first connecting region and the second connecting region can extend on different sides of the second rail. The first connecting region and the second connecting region can extend on opposite sides of the second rail. The first connecting region and the second connecting region can extend on opposite, lateral sides of the second rail. The first connecting region can extend on a laterally outer side of the second rail and the second connecting region can extend on a laterally inner side of the second rail.It would also be possible for the first connecting area to extend on a laterally inner side of the second rail and the second connecting area to extend on a laterally outer side of the second rail. If the first connecting area extends laterally outwards on the first rail and the second connecting area laterally inwards, then the first connecting area can also extend laterally outwards on the second rail and the second connecting area laterally inwards. The second rail can have a double-T profile. The second rail can be attached with one of the T-crossbars of the double-T profile to the underside of the attachment unit or the sitting part of the attachment unit. A first U-shaped profile half of the double-T profile of the second rail can be directed laterally outwards and a second U-shaped profile half of the double-T profile can be directed laterally inwards.The first connecting area can be located on the first U-shaped profile half of the double-T profile of the second rail, and the second connecting area can be located on the second U-shaped profile half of the double-T profile. The second connecting element can connect the add-on unit and the base unit in the second connecting area via the second rail system, in particular via the first rail and / or the second rail. The first connecting element can connect the balcony unit and the add-on unit in the first connecting area via the first rail system, in particular via the first rail and / or the second rail.

[0036] The first connecting element, or the first rail system, may comprise a first pair of roller units spaced apart from each other in the longitudinal direction of the balcony system. A roller unit may have a roller whose axis is mounted in a body of the roller unit. is. A roller unit could also have several, in particular two, rollers, the axes of which are mounted parallel to one another in the body of the roller unit. This axis(es) can lie horizontally, in particular in the transverse direction. This axis(es) can point laterally inwards from a body of the roller unit. The balcony unit can comprise the first pair of roller units of the first connecting element. The two roller units of the first pair of roller units can be attached to a first inner side of an outer frame of the balcony unit, in particular an outer frame which is connected to the floor of the balcony unit. The two roller units of the first pair of roller units can be arranged below a floor plate which lies between the outer frames.The rollers of the two roller units of the first pair of roller units of the first connecting element, which are spaced apart in the longitudinal direction of the balcony system, can engage in the (common) first rail belonging to the first and second connecting element, or to the first and second rail system. Said rollers can run in the first rail. Said rollers can engage in the first, laterally outward-facing U-shaped profile half of the double-T profile of the first rail. The first rail can enclose these rollers vertically from above and below, so that the rollers are restricted to running in the first rail, in particular to running in the horizontal longitudinal direction. As a result, the balcony unit can be designed as a support clamped in a linearly movable manner relative to the attachment unit.The running points of the rollers of the two roller units of the first pair of roller units of the first connecting element that are furthest apart in the longitudinal direction can define the longitudinal extent of the first connecting area. The longitudinal distance between the two roller units of the first pair of roller units of the first connecting element can be less than one-third of the length of the balcony unit, in particular less than one-quarter of the length of the balcony unit.

[0037] The first connecting element or the first rail system can comprise a second pair of roller units, the rollers of which cooperate with or engage with the (common) second rail of the first and second rail systems. The two roller units of the second pair of roller units of the first connecting element can be spaced apart from one another in the longitudinal direction of the balcony system, preferably at the same distance as the two roller units of the first pair of roller units of the first connecting element. The two roller units of the second pair of roller units can be spaced apart from the two roller units of the first pair of roller units in the transverse direction of the balcony system. A roller unit can in turn have a roller whose axis is mounted in a body of the roller unit. A roller unit could also have several, in particular two, rollers whose axes are mounted parallel to one another in the body of the roller unit.This axis(es). can lie horizontally, in particular in the transverse direction. This axis(es) can point laterally inwards from a body of the roller unit. This axis(es) can point in the opposite direction to the axis(es) of the roller unit(s) of the first pair of roller units of the first connecting element, in particular so that all axes point laterally inwards. The two roller units of the second pair of roller units of the first connecting element can be attached to a second inner side of the outer frame of the balcony unit. The rollers of the two roller units of the second pair of roller units of the first connecting element can engage in the (common) second rail which belongs to the first and second connecting element or to the first and second rail system. Said rollers can run in the second rail.Said rollers can engage in the first, laterally outward-facing U-shaped profile half of the double-T profile of the second rail. The second rail can enclose the rollers of the two roller units of the second pair of roller units vertically from above and below, so that these rollers are restricted to running in the second rail, in particular to running in the horizontal longitudinal direction. As a result, the balcony unit can be designed as a linearly movable, clamped support relative to the attachment unit. The first connecting element can comprise further roller units of the described type.

[0038] As an alternative to or in addition to a first connecting element or first rail system having roller units as counterparts to the (common) first or second rail, the first connecting element or rail system could comprise a first complementary rail and / or second complementary rail, wherein the first complementary rail and / or second complementary rail of the first connecting element can slide in or on the associated (common) first or second rail. For example, the (common) first rail of the first and second rail systems can enclose or be enclosed by a first complementary rail of the first rail system. The first complementary rail can be attached to the first outer side of the inner frame of the base unit.The first complementary rail of the first rail system can be shorter than the (common) first rail and can define the longitudinal extent of the first connecting region through its length. Similarly, a second complementary rail of the first rail system can be provided for the (common) second rail of the first and second rail systems. To improve the sliding of the rails and complementary rails relative to one another, the rails and / or complementary rails can be made of a low-friction material or coated with such a low-friction material on the surfaces that slide relative to one another.

[0039] The second connecting element, or the second rail system, can comprise a first pair of roller units that are spaced apart from one another in the longitudinal direction of the balcony system. A roller unit can have one roller whose axis is mounted in a body of the roller unit. A roller unit could also have several, in particular two, rollers whose axes are mounted parallel to one another in the body of the roller unit. This axis(es) can be horizontal, in particular in the transverse direction. This axis(es) can point laterally outward from a body of the roller unit. The base unit can comprise the first pair of roller units. The two roller units of the first pair of roller units can be attached to a first outer side of an inner frame of the base unit.The rollers of the two roller units of the first pair of roller units of the second connecting element, which are spaced apart in the longitudinal direction of the balcony system, can engage in the (common) first rail belonging to the first and second connecting element, or to the first and second rail system. Said rollers can run in the first rail. Said rollers can engage in the second, laterally inwardly directed U-shaped profile half of the double-T profile of the first rail. The first rail can enclose these rollers vertically from above and below, so that the rollers are restricted to running in the first rail, in particular to running in the horizontal longitudinal direction. As a result, the add-on unit can be designed as a support clamped in a linearly movable manner relative to the base unit.The running points of the rollers of the two roller units that are furthest apart in the longitudinal direction can define the longitudinal extent of the second connecting region. The longitudinal distance between the two roller units of the first pair of roller units can be less than one-third of the length of the base unit, in particular less than one-quarter of the length of the base unit.

[0040] The second connecting element or the second rail system can comprise a second pair of roller units, the rollers of which cooperate with or engage with the (common) second rail of the first and second rail systems. The two roller units of the second pair of roller units can be spaced apart from one another in the longitudinal direction of the balcony system, preferably at the same distance as the two roller units of the first pair of roller units of the second connecting element. The two roller units of the second pair of roller units can be spaced apart from the two roller units of the first pair of roller units in the transverse direction of the balcony system. Here, too, a roller unit can have a roller whose axis is mounted in a body of the roller unit. A roller unit could also have several, in particular two, rollers whose axes are mounted parallel to one another in the body of the roller unit.This axis(es) may extend horizontally, particularly transversely. This axis(es) may extend laterally from a body of the roller unit. point outwards. This axis(es) can point in the opposite direction to the axis(es) of the roller unit(s) of the first pair of roller units. The two roller units of the second pair of roller units can be mounted on a second outer side of the inner frame of the base unit. The rollers of the two roller units of the second pair of roller units of the second connecting element can engage in the (common) second rail which belongs to the first and second connecting element or to the first and second rail system. Said rollers can run in the second rail. Said rollers can engage in the second, laterally inward-facing U-shaped profile half of the double-T profile of the second rail.The second rail can enclose the rollers of the two roller units of the second pair of roller units vertically from above and below, so that these rollers are restricted to running in the second rail, in particular to running in the horizontal longitudinal direction. As a result, the attachment unit can be designed as a support clamped in a linearly movable manner relative to the base unit. The second connecting element can comprise further roller units of the type described.

[0041] As an alternative to or in addition to a second connecting element or second rail system with roller units as counterparts to the (common) first or second rail, the second connecting element or rail system could comprise a first complementary rail and / or second complementary rail, wherein the first complementary rail and / or second complementary rail of the second connecting element can slide in or on the associated (common) first or second rail. For example, the (common) first rail of the first and second rail systems can enclose or be enclosed by a first complementary rail of the second rail system. The first complementary rail can be attached to the first outer side of the inner frame of the base unit.The first complementary rail of the second rail system can be shorter than the (common) first rail and can define the longitudinal extent of the second connecting region through its length. Similarly, a second complementary rail of the second rail system can be provided for the (common) second rail of the first and second rail systems. To improve the sliding of the rails and complementary rails relative to one another, the rails and / or complementary rails can be made of a low-friction material or coated with such a low-friction material on the surfaces that slide relative to one another.

[0042] The fixed installation of the base unit with respect to the building structure means that in the event of a relative movement of the add-on unit and the base unit, the add-on unit moves relative to the building structure, while the base unit remains stationary and unmoved. The relative movement of the add-on unit and base unit can in particular serve to move the front end of the add-on unit in the longitudinal direction of the balcony system towards the building opening, in particular to move it closer to the building opening. A distance that the balcony system may have from the building opening in a compacted state can thereby be overcome. The length of the add-on unit can be dimensioned accordingly in order to be able to bridge a distance to the building opening. The length of the add-on unit can be essentially equal to the length of the second connecting region plus the length of the cantilevered part of the add-on unit in the extended state, wherein the length of the cantilevered part can correspond to the distance to the building opening.The second connecting element can be configured to enable relative movement between the top unit and the base unit in order to transfer the balcony system into its assembled state and / or from this assembled state into the compacted state. The top unit can project from the base unit, at least temporarily, namely in the assembled state and / or balcony state of the balcony system. The top unit can thus be configured to form a cantilever arm.

[0043] The freedom of movement of the add-on unit in the longitudinal direction relative to the base unit can be limited. The add-on unit, or the part of the add-on unit sitting on the base unit, can have a rear end that is opposite a front end, wherein the front end is the end that is attached to the part of the add-on unit that can project beyond the base unit. The freedom of movement of the balcony unit in the longitudinal direction relative to the add-on unit can be limited. The balcony unit can have a rear end that is opposite a front end. The first rail, which belongs to the first and second connecting element, can have a first stop element. The first stop element can be located at the rear end of the add-on unit. The first stop element can be a closed rear end of the (common) first rail, e.g. a face plate at the rear end of the add-on unit.The first stop element can prevent further movement of the top unit in the longitudinal direction towards the front if the first stop element cooperates with a first complementary stop element of the base unit. The first complementary stop element of the base unit can be the rearmost roller of the rear roller unit of the two longitudinally spaced roller units of the first pair of roller units of the second connecting element. Alternatively, the first complementary stop element of the base unit can be a rear end of a first complementary rail. The first stop element can prevent further movement of the balcony unit in the longitudinal direction towards the rear if the first stop element cooperates with a first complementary stop element of the balcony unit. The first complementary stop element of the balcony unit can be the rearmost roller of the rear roller unit of the two longitudinally spaced roller units. of the first pair of roller units of the first connecting element. Alternatively, the first complementary stop element of the balcony unit can be a rear end of a first complementary rail. The first rail, which belongs to the first and second connecting element, can have a second stop element. The second stop element can be located at the front end of the add-on unit. The second stop element can be a closed front end of the (common) first rail, e.g. an end plate at the front end of the add-on unit. The second stop element can prevent the add-on unit from moving further backwards in the longitudinal direction by the second stop element interacting with a second complementary stop element of the base unit. The second complementary stop element of the base unit can be the frontmost roller of the front roller unit of the two longitudinally spaced-apart roller units of the first pair of roller units of the second connecting element.Alternatively, the second complementary stop element of the base unit can be a front end of a first complementary rail. The second stop element can prevent the balcony unit from moving further forward in the longitudinal direction by the second stop element interacting with a second complementary stop element of the balcony unit. The second complementary stop element of the balcony unit can be the foremost roller of the front roller unit of the two longitudinally spaced roller units of the first pair of roller units of the first connecting element. Alternatively, the second complementary stop element of the balcony unit can be a front end of a first complementary rail. The same can apply to the (common) second rail of the first and second connecting elements in interaction with the two longitudinally furthest apart rollers of the second pair of roller units of the first and second connecting elements, respectively.alternatively in conjunction with a second complementary rail.

[0044] The counterforce unit may comprise a counterweight to compensate for at least a large portion of the forces acting on the balcony unit. In particular, the counterforce unit may comprise a counterweight designed to compensate for all forces acting on the balcony unit. The weight of other parts of the counterforce unit, and possibly also other devices, e.g., pressure devices, may also lead to partial compensation of said forces. However, a counterweight designed to compensate for all forces acting on the balcony unit is dimensioned and, if necessary, positioned such that it could compensate for the forces acting on the balcony unit up to the specified maximum. E.g.The counterweight is dimensioned such that the balcony unit, in its balcony state, meets national safety regulations regarding statics due to the counterweight alone, without relying on other compensation mechanisms. A counterforce unit that includes a counterweight is referred to herein as a counterweight unit.

[0045] Balcony systems according to embodiments described herein may include a counterweight unit, i.e., a counterforce unit comprising a counterweight. The counterweight may be configured to compensate for at least a majority of the forces acting on the balcony unit, typically to compensate for all forces acting on the balcony unit.

[0046] The counterweight can be located in the base unit. The counterweight can be located in a rear area of ​​the base unit with respect to the longitudinal direction of the balcony system, e.g., adjacent to the rear end of the base unit. The counterweight can be mounted in a fixed position within the base unit, so that the counterweight, like the base unit, is designed for fixed installation with respect to the building structure.

[0047] The mass of the counterweight can be dimensioned such that the weight of the counterweight can compensate for all forces acting vertically on the balcony unit up to a predetermined maximum load, i.e. in particular the dead weight of the balcony unit plus the weight of any people or objects on it. More precisely, the mass and position of the counterweight as well as the support point / pivot point of the balcony system (e.g. via the end position of the support element at the building opening) can be selected so that corresponding torques can be compensated. The mass of the counterweight can be between 100 and 400 kg, for example, typically between 150 and 300 kg, e.g. approximately 180 or approximately 210 kg. The counterweight can be made of, for example, concrete, metal, e.g. iron, steel or lead, water in a suitable tank, a fill material such as sand in a suitable container, or combinations thereof.The counterweight can be composed of partial weights, e.g., individual concrete slabs. The partial weights can be dimensioned so that they can be carried by one person. The partial weights can, for example, not exceed 50 kg, and typically not exceed 40, 30, or even 20 kg. Forces acting laterally on the balcony unit, e.g., due to the impact of people on the parapet or wind loads, can, if necessary, be transferred to the base unit via the first and second connection areas. The mass of the counterweight, possibly plus the remaining mass of the base unit, or the mass distribution of these components, can be selected so that all forces or corresponding torques can be compensated up to specified maximum loads.

[0048] The base unit can be of modular construction. The base unit can comprise a base module. The base module is configured to interact with the attachment unit via the second connecting element. The base module can carry the base unit-side components of the second connecting element. In particular, the longitudinally spaced Roller units can be attached to the side of the base module, in particular with rollers located laterally outwards. The base module can comprise at least two elements running in the transverse direction which are spaced apart from one another in the longitudinal direction. The base module can have two elements running in the longitudinal direction which connect the at least two elements running in the transverse direction. The base module can thus provide a stiffened frame structure which represents a platform for the add-on unit, in particular, for example, in the form of the internal frame. The base module can be designed to absorb all forces acting on the balcony system which are transmitted via the add-on unit through the second connecting element. The base module can be designed to absorb the weight of the counterweight and to transfer forces, with the exception of the forces diverted via the support element, to the floor of the building structure.The base module can be designed for stationary installation with respect to the building structure, in particular for installation on the floor of the building structure or on a static module of the base unit. The base unit, or more specifically the base module, can comprise a substructure. The substructure can serve in particular to compensate for the parapet height of the building opening and can have a corresponding height. The substructure can be designed such that it can bear at least the weight of the components of the balcony system located on it (particularly in the compacted state), in particular the parts of the base unit as well as the add-on and balcony unit located on it, plus the maximum permissible live load. The substructure can be height-adjustable. The substructure can be in the form of a table, the legs of which can be height-adjustable.The substructure can alternatively be a separate component of the balcony system, which can be connected to the base unit, in particular the basic module, in particular detachably connected.

[0049] The base unit may have one or more additional modules. Additional modules may be configured to provide furniture functionality. For example, an additional module may be a shelf, a chest of drawers, a wardrobe, a bed, or part of the aforementioned pieces of furniture. Additional modules may be attached to the base module or the substructure or inserted into spaces between the base module or the substructure. The base module, the substructure, the add-on unit, and / or the balcony unit may contribute to the furniture functionality of the one or more additional modules, particularly in the compacted state of the balcony system. The one or more additional modules may transform the base unit or the balcony system into one or more pieces of furniture, optionally in interaction with the base module, the substructure, the add-on unit, and / or the balcony unit.The additional modules may be irrelevant to the functionality of the balcony system, which consists in providing a balcony, and / or to the statics of the balcony system. In other words. The additional modules can be freely selected to provide any desired furniture functionality, without having to comply with the specific safety requirements associated with the provision of a (temporary) balcony. The one or more additional modules can be designed for fixed installation relative to the building structure, in particular on the floor of the building structure or on a structural module of the base unit.

[0050] The base unit can comprise a static module. The static module can be configured to distribute forces exerted by the balcony system across a floor area of ​​the building structure and / or to compensate for uneven floors in the building structure. The static module can comprise a base plate. The base plate can be a load-distributing plate for distributing the forces exerted by the balcony system across a floor area. The base plate can be arranged so that the support element of the add-on unit can roll or slide over it. The base plate can extend in the longitudinal direction of the balcony system at least between a front end of the base module and the building opening, but can also extend below the base module and / or the additional module(s). In the transverse direction, the base plate can have at least the width of the support element.The base plate can be designed for at least one of the following: distribution of the forces exerted by the balcony system over a floor area of ​​the building structure, compensation of a floor incline, compensation of floor unevenness, reduction of a rolling or sliding resistance of the support element compared to rolling or sliding over the floor area. The static module can comprise beams and / or bases arranged beneath the base plate. Beams can be designed in particular for the distribution of the forces exerted by the balcony system over the floor area of ​​the building structure. Bases can be designed in particular for compensation of a floor incline and / or compensation of floor unevenness. The static module could also comprise a support element for the add-on unit, in particular if the add-on unit does not have a support element. The support element can, for example,Located at the building opening and extending vertically, the height of the support element is such that the top unit rests on the support element when extended and can rest on it. The support element could consist of a plate or posts that are connected to the floor slab or that are separate and freestanding.

[0051] The relative movement of the balcony unit and the attachment unit can in particular serve to move the front end of the balcony unit in the longitudinal direction of the balcony system out of the building opening, in particular by a horizontal movement of the balcony unit in the longitudinal direction of the balcony system. The length of the balcony unit can be substantially equal to the Length of the first connecting area plus the length of the cantilevered part of the balcony unit in the extended state. The first connecting element can be configured to enable a relative movement of the balcony unit and the counterforce unit in order to move the balcony unit into its balcony state and / or to bring it out of this state. The balcony unit can be cantilevered relative to the counterforce unit, specifically relative to the add-on unit, at least temporarily, namely in the balcony state of the balcony unit. The balcony unit can therefore be configured to form a cantilever arm. The length of the balcony unit can be equal to or substantially equal to the length of the add-on unit. The length of the add-on unit can be equal to or substantially equal to the length of the base unit.

[0052] Where, in particular with regard to components of the first connecting element and the second connecting element, such as rails or roller (units), what is described herein refers to a component being attached to or on the base unit, the basic module, the add-on unit or the balcony unit, or being attached to an underside, top side or lateral side thereof, this also includes the possibility that the corresponding component may be fully or partially embedded in the unit or module in question, e.g. in recesses. The term "attached" also covers situations in which these components are at least partially integrated into the units or modules in question or are molded integrally with them.

[0053] The balcony system is typically a temporary balcony system. A balcony can be set up as needed and removed when no longer needed. For example, a window can be temporarily converted into a balcony access if the temporary balcony system temporarily sets up a balcony and then removes it again. This means that the window can otherwise be used as usual. This is particularly true if the balcony system creates a balcony without interfering with the building structure and can then be removed without leaving a trace. Because it can be compacted, the balcony system takes up little space when it is not being used as a balcony. Parts of the base unit, especially additional modules, can form one or more pieces of furniture, e.g. a bed, a wardrobe or a combination thereof.

[0054] The balcony unit may include a floor. The floor may serve as a standing surface for loads such as people if the balcony unit projects from the building opening and forms a balcony. The balcony unit may include a restraint device, e.g. in the form of a parapet, a railing, or a guardrail. The restraint device serves to prevent people or objects from falling from the balcony unit in its balcony state. The retaining device can be firmly connected to the floor or detachably connectable to the floor. The balcony unit can comprise a floor and a retaining device. The floor can be designed as a linearly movable, clamped support, or a floor unit consisting of the floor and the external frame connected to it can be designed as a linearly movable, clamped support. The floor can be cuboid-shaped, in particular plate-shaped. The balcony unit or the external frame of the balcony unit can have a height in a rear area, i.e. an area at the first connecting element or in the first connecting area, which is greater than in a front area at the front end of the balcony unit. The height offset can be manifest on the underside of the balcony unit or in the lower part of the external frame.The height offset can be at least as great as the frame height of a window frame located in the building opening. The top side of the external frame and / or the top side of the floor can be flat or essentially flat. In the first region of the first connecting element or in the first connecting region, the height can be dimensioned such that roller units of the first connecting element can be attached, in which the axes of their rollers lie horizontally, in particular point inwards in the lateral direction. The height of the external frame in the first region of the first connecting element or in the first connecting region can be approximately the diameter of these rollers greater than the height of the external frame in the second region at the front end of the balcony unit.The second section at the front end of the balcony unit can be as long as the part of the balcony unit that projects beyond the top unit when the balcony unit is fully extended. The ratio of the length of the second section to the length of the first section, or the ratio of the length of the projecting part of the balcony unit when the balcony unit is fully extended to the length of the first connecting section, can be greater than 2:1 or greater than 5:2. This length ratio can, for example, be between 2:1 and 5:1, in particular between 5:2 and 4:1. The said length ratio can, for example, be approximately 3:1.

[0055] By moving the balcony unit, or parts of the balcony unit if it is demountable, relative to the counterforce unit / top unit, the balcony system can temporarily provide a balcony, namely when the balcony unit is in its balcony state, while at other times the balcony system can be compactified. The balcony unit itself can be compactifiable, in particular by dismantling a restraint device and storing it on a floor of the balcony unit. Compactification of the balcony unit can complete the compactification of the balcony system. In the compacted state, the balcony system can have a height of less than 50 cm (e.g. approximately 45 cm, which corresponds to the standard seating height), or even less than 40 cm or less than 30 cm.

[0056] The balcony system can have a mechanical, electro-mechanical or electronic safety system. The safety system can prevent improper assembly. The balcony system or the safety system can be designed in such a way that the balcony unit cannot be compacted when assembled or in the balcony state, but can only be compacted when the balcony unit and the attachment unit are retracted. In particular, a restraint device can be non-disassemblable, foldable or otherwise removable, at least when the balcony state, and preferably when assembled and in the balcony state, which can be achieved, for example, by locking. Conversely, the balcony system orthe securing system must be set up in such a way that at least a relative movement of the balcony unit and the add-on unit is not possible, preferably neither a relative movement of the balcony unit and the add-on unit nor a relative movement of the add-on unit and the base unit is possible as long as the balcony unit is not assembled, in particular as long as the retaining device is not assembled. The balcony system or the securing system can be set up in such a way that the balcony unit cannot be moved relative to the add-on unit as long as the add-on unit is not fully extended. This securing can be present in particular for a design of the balcony system in which the counterweight is in the base unit and the pivot point / tilting point of the balcony system is defined by a support element on the add-on unit or by a seating element onto which the add-on unit only rests when fully extended.The safety system can be configured to interact with a fall protection device for floor-to-ceiling windows and to release such a fall protection device when the balcony system is moved from the assembly state to the balcony state.

[0057] To make the balcony unit more compact, the retaining device can consist of individually foldable and extendable parts, in particular individually foldable and extendable railing sections, such as two side sections and a front section and possibly two corner posts. The railing sections can be connected to the floor or the external frame of the balcony unit via hinges and / or joints. The railing sections can be designed so that they can be folded inwards towards the floor, while outwards they can only move to an orientation perpendicular to the floor when unfolded. The railing sections can be designed to be releasably connected to one another when unfolded. The railing sections can have central joints that allow them to be folded during dismantling so that only half their height rests on the floor of the balcony unit.When folded to the ground, side railing sections can be placed next to each other.

[0058] The balcony system described herein has a number of advantages over the previously known balcony systems described at the beginning. Due to the first rail, which is part of the first connecting element and the second connecting element, and possibly due to the second rail, which is part of the first and second connecting elements, the balcony system is more compact and stable than with two independent, separate connecting elements that are used in one of the previously known balcony systems. The height of the balcony system in the compacted state can therefore be smaller than in the previously known balcony systems, in particular if the first rail and possibly the second rail are engaged in the lateral direction by the first and second connecting elements.The second rail also allows the first and second connecting elements to have the same resistance to applied forces, including tensile forces, especially if the first connecting element and the second connecting element are each designed with identical roller units as counterparts to the first rail and second rail, respectively. The shared rail also allows a greater overhang of the front part of the balcony unit in relation to the length of the rear, clamped part of the balcony unit when used as a balcony than was possible in the previously known balcony system.

[0059] By positioning the counterweight in the base unit, particularly at its rear end, and by appropriately dimensioning the mass of the counterweight, the lever arm can be extended and the mass of the counterweight reduced. Tensile forces on the second connecting element, which can arise when forces acting on the balcony unit are transmitted to the base unit via the add-on unit, can be absorbed by a common connecting system, in particular by the (common) first rail and, if applicable, (common) second rail. However, the positioning of the counterweight in the base unit is independent of whether the first and second connecting elements have a common first rail and, if applicable, a common second rail. This advantage can also be achieved with other designs of the balcony system.By means of a support element or attachment element that can brace the add-on unit against the building opening, the potential pivot point of the balcony system is favorably positioned in order to increase the lever arm of the counterforce unit, i.e. of the add-on unit and base unit, and to make it more difficult for the balcony system to tip over, or to increase the permissible maximum load at which this would occur. By means of a safety system that only allows the balcony unit to be extended when the add-on unit is fully extended, it can be ensured that this advantageous long lever arm of the counterforce unit is already present when the balcony unit is extended. This allows the mass of a counterweight in the base unit to be reduced without having to fear the balcony tipping over due to improper use.

[0060] By making the external frame in a front area of ​​the balcony unit lower than the height of the external frame in a rear area of ​​the balcony unit at the point where the first connecting element is located (namely by creating a height offset in a lower part of the external frame on the underside of the floor), the space taken up by the floor or the external frame connected to it in the building opening when the balcony is in use can be reduced. Particularly in the case of a window, this allows for more convenient access to the temporary balcony because the remaining clear height for people in the building opening is maximized. The height offset created by the lower height of the external frame in the second, front area can ensure that the height of any window frames or similar located in the building opening can be overcome.For floor-to-ceiling windows with a maximum of a few centimetres of base height to be overcome, the lower height of the external frame in the second, front area can allow the balcony unit to overcome this base height and, if necessary, a window frame height due to the resulting height offset on the underside of the floor, which overall allows for an extremely compact design of the balcony system.

[0061] Fig. 1 shows an embodiment of a balcony system 100. Shown is a schematic side view of the balcony system 100. The lateral direction or transverse direction runs perpendicular to the plane of the drawing. The area on the right in Fig. 1 is frontal, the area on the left is rear or backward with respect to the longitudinal extent of the balcony system 100. The vertical direction is the top-bottom direction in Fig. 1. The balcony system comprises a balcony unit 110, a counterforce unit 120 and a first connecting element 130 that connects the balcony unit 110 and the counterforce unit 120. The counterforce unit 120 comprises a base unit 220, an attachment unit 225 and a second connecting element 230. The base unit 220 can be stationary relative to a floor of a building structure. The base unit can stand directly on the floor. Alternatively, the base unit 220 can, as shown in Fig.1, rest on a substructure 450 or comprise a substructure 450 that rests on the floor. The substructure can, for example, have the shape of a table. The second connecting element 230 connects the add-on unit 225 and the base unit 220. The add-on unit 225 comprises a first rail 442, which is part of the first connecting element 130 and also part of the second connecting element 230. The add-on unit 225 is movable in the longitudinal direction relative to the base unit 220, and the balcony unit 110 is movable in the longitudinal direction relative to the add-on unit 225, as indicated by the double arrows. The longitudinal direction is a horizontal direction, so that the relative movements are horizontal movements. By a. With respect to the floor of the building structure, the base unit is stationary, the relative movements are absolute horizontal movements of the add-on unit 225 or the balcony unit 110 relative to the reference frame of the floor, while the base unit 220 remains at rest. The first connecting element 130 enables the relative movement of the balcony unit relative to the add-on unit, the second connecting element 230 enables the relative movement of the add-on unit relative to the base unit, and the first rail 442 common to both connecting elements serves both relative movements. The add-on unit 225 and the balcony unit 110 are each shown in Fig. 1 in the forward-displaced state, ie the balcony system is in the balcony state there.

[0062] The attachment unit 225 can comprise a part 226 resting on the base unit. The first connecting element 130 can connect the balcony unit 110 and the attachment unit 225, or the part 226 of the attachment unit 225 resting on the base unit, via the first rail 442 in a first connecting region 131. The balcony unit 110 can comprise a floor 112 and / or a retaining device 114 (parapet element, railing). The floor 112, or the floor and an external frame 412 connected thereto, can be designed as a linearly movable, clamped support that is linearly movable but otherwise clamped in the first connecting region 131. The balcony unit 110, or the external frame 412, can have a height offset 414 on the underside, wherein the height of the balcony unit 110 in the first connecting region 131 is greater than the height of the balcony unit 110 at a front end of the balcony unit 110, orthe height of the outer frame 412 in the first connecting area 131 is greater than the height of the outer frame at the front end of the balcony unit 110.

[0063] The second connecting element 230 can connect the attachment unit 225, or the part 226 of the attachment unit 225 that rests on the base unit, and the base unit 220 via the first rail 442 in a second connecting region 231. The attachment unit 225, or the resting part 226, can be designed as a linearly movable, clamped support that is linearly movable but otherwise clamped in the second connecting region 231. The first connecting region 131 and the second connecting region 231 can extend on different sides of the first rail 442. The attachment unit 225 can comprise a support element 228. The support element 228 can support the resting part 226, so that the attachment unit can be a linearly movable support that is otherwise clamped in the second connecting region 231 and supported by the support element 228.The balcony system 110 may include a counterweight 125 disposed in the base unit 220, particularly at the rear end of the base unit 220. arranged counterweight. A counterweight may be provided in all embodiments described herein, even if it is not shown in a figure.

[0064] Figs. 2-7 show a balcony system 100 according to one embodiment. Fig. 2 shows a view of the balcony system 100 in longitudinal section, Fig. 3 shows a cross-sectional view along the line AA of Fig. 2 and Fig. 4 shows an enlarged section B of Fig. 3. Fig. 5 shows an exploded view of the balcony system 100. Fig. 6 shows a perspective view of the balcony system 100 in the compacted state, but without compaction of the balcony unit 110, e.g. by folding and flattening the retaining device 114. Fig. 7 shows a perspective view of the balcony system 100 in the balcony state. Figs. 2, 3 and 5-7 show a building structure 1, e.g. a room, with a floor 2 and a building opening 10, in this case a window, wherein a window frame 12 is shown in the building opening 10. In Fig. 6, the longitudinal direction L, the transverse direction Q and the vertical direction V are illustrated by double arrows.

[0065] In the embodiment according to Figs. 2-7, the balcony system 100 comprises a first connecting element 130, which comprises a first rail system, and a second connecting element 230, which comprises a second rail system, wherein the first rail system connects the balcony unit 110 and the attachment unit 225 in the first connecting area 131, and the second rail system connects the attachment unit 225 and the base unit 220 in the second connecting area 231. The base unit 220 can comprise a base module or substructure 450, which, as shown by way of example in Fig. 3, can have the shape of a table with a tabletop 456 and four legs 452, wherein the legs 452 can be reinforced by cross braces 458, 459 and can be height-adjustable by a clamping or screw mechanism 454. Additional modules that can give the balcony system 100 the functionality of a piece of furniture, for example, are not shown in the illustrations, but may be present and may be required.a. occupy the free space within the basic module or the substructure 450.

[0066] The second connecting element 230 and the first connecting element 130 together comprise a first rail 442 and a second rail 444. The first rail 442 and the second rail 444 are therefore part of both the first connecting element 130 or first rail system and part of the second connecting element 230 or second rail system and are therefore also referred to as a common first rail and a common second rail. The first rail 442 and the second rail 444 are attached to the underside of the attachment unit 225, namely laterally on the outside on the underside of the part 226 of the attachment unit 225 that rests on the base unit 220. The first rail 442 and the second rail 444 run parallel in the longitudinal direction and are spaced apart from one another in the transverse direction. The first rail 442 and the second rail 444 each have a double-T profile, with the web running in the vertical direction, perpendicular to the underside of the attachment unit 225 or the sitting part 226. The first rail 442 and the second rail 444 each have an inwardly directed U-shaped profile half, which serves as an inner support rail and consists of the inside of the web, the top side of the inner part of the lower T-crossbar (flange, belt), and the underside of the inner part of the upper T-crossbar (flange, belt). The first rail 442 and the second rail 444 each also have an outwardly directed U-shaped profile half, which serves as an outer support rail and consists of the outside of the web, the top side of the outer part of the lower T-crossbar (flange, belt), and the underside of the outer part of the upper T-crossbar (flange, belt).

[0067] The first connecting element 130 or the first rail system comprises a first roller unit 473 and a second roller unit 475, the rollers of which engage in the outer U-shaped profile half of the common first rail 442, which serves as a U-shaped support rail. The first roller unit 473 and the second roller unit 475 are arranged at a distance from one another in the longitudinal direction, which represents the catches of the first connecting region 131, and are attached to the first inner side 411 of an outer frame 412 of the balcony unit 110. Accordingly, a third roller unit 477 and a fourth roller unit 479 of the first connecting element 130 or the first rail system are provided, the rollers of which engage in the outer U-shaped profile half of the common second rail 444, which serves as a U-shaped support rail.The third roller unit 477 and the fourth roller unit 479 are arranged at the same distance from each other in the longitudinal direction and are mounted on the second inner side 413 of an outer frame 412 of the balcony unit 110. The outer frame 412 extends at least along the longitudinal sides of the floor 112 of the balcony unit 110, with the outer frame 412 having a part located below the floor 112, which has the first inner side 411 and the second inner side 413. The rollers of the first and second roller units 473, 475 run on the top side of the outer part of the lower T-bar and the bottom side of the outer part of the upper T-bar of the double-T profile of the first rail 442. The rollers of the third and fourth roller units 477, 479 run on the top side of the outer part of the lower T-bar and the bottom side of the outer part of the upper T-bar of the double-T profile of the second rail 444.The axes for the rollers of the first, second, third and fourth roller units 473, 475, 477 and 479 extend transversely (ie laterally) inwardly, such as the axis 474 of the first roller unit 473 and the axis 478 of the third roller unit 477 in Fig. 4.

[0068] The second connecting element 230 or the second rail system comprises a first roller unit 483 and a second roller unit 485, the rollers of which are inserted into the support rail serving as a support rail, inner U-shaped profile half of the common first rail 442. The first roller unit 483 and the second roller unit 485 of the second connecting element 230 are arranged at a distance from one another in the longitudinal direction that represents the length of the second connecting region 231 and are mounted on a first outer side 421 of a raised middle part of the base unit 220. Accordingly, a third roller unit 487 and a fourth roller unit 489 of the second connecting element 230 are provided, the rollers of which engage in the inner U-shaped profile half of the common second rail 444, which serves as a guide rail. The third roller unit 483 and the fourth roller unit 489 are arranged at the same distance from one another in the longitudinal direction and are mounted on a second outer side 423 of the raised middle part of the base unit 220.The rollers of the first and second roller units 483, 485 of the second connecting element 230 run on the upper side of the inner part of the lower T-shaped cross-section and the underside of the inner part of the upper T-shaped cross-section of the double-T profile of the first rail 442. The rollers of the third and fourth roller units 487, 489 of the second connecting element 230 run on the upper side of the inner part of the lower T-shaped cross-section and the underside of the inner part of the upper T-shaped cross-section of the double-T profile of the second rail 444. The axes for the rollers of the first, second, third and fourth roller units 483, 485, 487 and 489 of the second connecting element 230 extend transversely (i.e., laterally) outwards, such as the axis 486 of the third roller unit 485 and the axis 490 of the fourth roller unit 489 of the second connecting element in Fig. 4. 230.

[0069] The support element 228 of the attachment unit 225 has a roller system with two roller units, of which only one is visible in the figures, while the other is arranged parallel and spaced apart in the transverse direction. The roller units are mounted on the underside of a body of the support element 228 and can run over the floor 2 of the building structure 1. In comparison to Fig. 6, the support element 228 in Fig. 7 has been moved over the floor 2 of the building structure 1 toward the building opening 10, with the seated part 226 of the attachment unit 225 overcoming the distance to the building opening 10 and the support element 228 of the attachment unit 225 essentially also compensating for the parapet height of the building opening 10 in the vertical direction. As best seen in Fig. 2, the balcony unit 110 with its floor 112 and the retaining device 114 can now be moved out of the building opening 10 so that the balcony system 100 assumes its balcony state.The part of the balcony unit projecting over the ledge of the building opening represents a temporary outdoor balcony. To maximize the clear height, the floor 112 can be moved horizontally as close as possible above the ledge 11 or over a window frame 12 located in the building opening 10, the part of the external frame 412 located below the floor 112 has the height offset 414. The height of the support element 228 plus the height offset 414 are greater than in this embodiment. the parapet height up to ledge 11 plus the window frame height of window frame 112 on ledge 11.

[0070] Fig. 8 shows an embodiment of the balcony system 100 for a floor-to-ceiling building opening 10. The base unit 220 with the raised central section rests directly on the floor 2. A substructure is not present. The frame height of a window frame 12 is overcome by the height offset 414. The common first rail 442 and the common second rail 444 of the first and second connecting elements, into which rollers engage laterally from the inside and outside, respectively, result in a very compact design. In the fully compacted state, in which the retaining device 114 is also disassembled and folded in so that it rests on the floor 112 and is enclosed by a part of the externally suspended frame 412 located above the floor (not shown), the total height of the balcony system 100 can be less than 50 cm, 40 cm, or even less than 30 cm.

[0071] Fig. 9 shows an embodiment of the balcony system 100 for a building opening 10 with a parapet height, similar to a conventional window. Instead of a support element, the balcony system has a mounting element 428, the body 429 of which is fixedly arranged in front of the building opening. When the attachment unit 225 is placed on the mounting element 428, a conveniently located, far-forward support point / pivot point is provided for the balcony system 100, and forces are transferred to the floor 2.

[0072] In the embodiment of Fig. 10, a support element 428 of the balcony system is arranged directly on the ledge 11 of the building opening 10. The support point / pivot point of the balcony system 100 is thereby made even more favorable, since the lever arm on which the counterweight 125 acts is even longer. Particularly for load-bearing exterior walls, e.g., made of concrete, the arrangement of the support element 428 on the ledge 111 can also be even more advantageous from a structural point of view.

[0073] Figs. 11-13 show a perspective view of the balcony system 100, in which the balcony unit can be compacted by the retaining device 114 being designed in the form of a railing that can be disassembled into individual parts and folded in and out. The retaining device 114 can be designed in this way in any embodiment, even if it is shown schematically and without details in some figures. The retaining device 114 comprises a first lateral railing section 330, a second lateral railing section 340, a frontal railing section 350, a first rear corner post 360 and a second rear corner post 370. The outer frame has a frame part 416 that projects upwards above the floor 112 and is circumferential on both sides and the front. The frame part 416 serves the lateral railing sections 330, 340 as respective longitudinally Skirting boards extending across the top of the floor 112. Parapet parts 334, 344 of the side railing sections 330, 340 are connected to the frame part 416 via respective hinges 335, 345 and each have center joints 336, 346 through which each of the parapet parts can be folded. The rear corner posts 360, 370 are connected to the floor 112 via hinges 365. The front railing section 350 is connected to the floor 112 via a hinge 355 and extends at the front end of the floor along the front section of the surrounding frame part 416 of the outer frame 412.

[0074] Fig. 11 shows the balcony unit 110 at the beginning of the assembly of the restraint device 114. The frontal railing section 350 and the rear corner posts 360, 370 lie folded on the floor 112 between the surrounding frame part 416. The parapet part 344 of the second lateral railing section 340 lies folded above it, with the second parapet part 344 folded at its center joints 346. The parapet part 334 of the first lateral railing section 330 is shown being set up via its hinges 335 and being unfolded via its center joints 336. Fig. 12 illustrates the further assembly of the restraint device 114, with the parapet part 334 already fully unfolded at the center joints and standing vertically in the state shown. The first rear corner post 360 has been placed at its hinge 365 perpendicular to the ground 112.The first rear corner post 360 contacts with its upper side a rear securing element 337 of the first parapet part 334, wherein the first rear corner post 360 can be releasably connected to the rear securing element 337, e.g., by a locking mechanism with spring-loaded locking pins on the upper side of the first rear corner post 360, which engage in a recess of the rear securing element 337. The second parapet part 344 is shown in the erected state via the hinges 345, while the second parapet part is currently still folded at its center joints 346. Fig. 13 shows the balcony unit 110 shortly before the assembled state. The parapet parts 334, 344 are positioned vertically and the undersides of the parapet parts 334, 344 have come to rest on the surrounding frame part 416.The second rear corner post 370 is vertically erected via the hinge 375 and releasably connected at its top to a rear securing element 347 of the second parapet part 344. The frontal railing section 350 is shown erected via the hinges 355. Once the frontal railing section 350 is vertically divided, it contacts a frontal securing element 339 of the first parapet part 334 and a frontal securing element 349 of the second parapet part 344, to which the frontal railing section 350 is releasably connectable, e.g., by snap-in mechanisms with spring-loaded securing pins on the top of the frontal railing section 350, which engage in respective Recesses of the frontal securing elements 339, 349 engage. In this way, the restraint device 114 fulfills its restraining function for persons or objects.

[0075] A balcony system could, for example, be designed so that it is erected in the sequence of Figs. 11, 12, 13, 6, 7 in this order, whereby the state in Fig. 6 can be followed by a step (not shown) in which the balcony unit and the add-on unit are extended together relative to the base unit before the balcony unit is moved out of the building opening relative to the add-on unit in order to achieve the erected state in Fig. 7. Dismantling can accordingly take place the other way around. The assembly sequence can be enforced in order to ensure safe use of the balcony system. For example, in the compacted state, the add-on unit can be locked relative to the base unit by a first locking device and the balcony unit can be locked relative to the add-on unit by a second locking device. The first locking device can, for example, be released electromechanically, e.g.in that the first rear corner post 360, the second rear corner post 370, and the front section 350 are connected to the four locking elements 337, 339, 347, 349, thereby generating a first electrical signal. Accordingly, the second locking mechanism could be released electromechanically when the balcony unit, together with the attachment unit, has been fully extended, thereby closing contacts for a second electrical signal.

[0076] According to one embodiment, a balcony system for use with a building opening of a building structure, typically a window, is provided. The balcony system comprises a balcony unit configured to protrude from the building opening and a counterforce unit. The counterforce unit comprises a base unit and an attachment unit. The counterforce unit is configured to compensate for forces acting on the balcony unit. The base unit is configured for stationary installation relative to the building structure, typically for stationary installation on a floor of the building structure. The balcony unit and the attachment unit are connected via a first connecting element. The attachment unit and the base unit are connected via a second connecting element. The attachment unit is movable relative to the base unit. The balcony unit is movable relative to the attachment unit. The base unit may comprise a counterweight.The counterweight can be configured for fixed installation with respect to the building structure. The balcony system can have a first locking mechanism that prevents relative movement of the top unit and the base unit. The balcony system can have a second locking mechanism that prevents relative movement of the balcony unit and the top unit. The first locking mechanism and the second locking mechanism have a locked and a released state. The relative movements are prevented in the locked state. The first locking mechanism can only be adjusted after the balcony system has been installed. The retaining device can be releasable. The second locking device can be configured so that it cannot be released before the first locking device. The second locking device can only be released after relative movement between the attachment unit and the base unit. The balcony unit can be extendable beyond the attachment unit by 3 / 4 of its length. The balcony system can have all other features according to the embodiments described herein.

[0077] According to further embodiments, a building structure is provided. This comprises a building opening and a balcony system according to embodiments described herein. The building opening can have the dimensions and sill height of a window, including a floor-to-ceiling window. The base unit of the counterforce unit can be fixedly positioned on a floor of the building structure. The top unit of the counterforce unit can be moved or movable with its front end to the building opening. The balcony unit can protrude through the building opening or be movable through the building opening.

[0078] Further embodiments relate to the use of a balcony system according to one of the embodiments described herein as a temporary balcony. The balcony unit serves as the balcony. The balcony, or balcony unit, can be configured for use with a building opening, typically a window.

[0079] According to further embodiments, a method for setting up a temporary balcony is provided. The method comprises setting up a balcony system described herein in a building structure having a building opening, wherein setting up the balcony system comprises setting up the base unit of the balcony system in a fixed position with respect to the building structure. The method comprises moving the attachment unit relative to the base unit such that the balcony unit connected to the attachment unit is moved in front of the building opening. The method comprises moving the balcony unit relative to the attachment unit such that the balcony unit protrudes from the building opening. Furthermore, the functionalities of the described components of the balcony system directly and immediately result in further method steps that implement or utilize this functionality. For example,If a component is described as movable, the process step that naturally follows is moving this component, etc.

[0080] The foregoing refers to embodiments of the invention. However, other and further embodiments may arise without departing from the scope of the invention as defined in the following claims.

Claims

CLAIMS 1. A balcony system (100) for use with a building opening (10) of a building structure (1), the balcony system comprising: a balcony unit (110) configured to protrude from the building opening; a counterforce unit (120) comprising a base unit (220) and an attachment unit (225) and configured to compensate for forces acting on the balcony unit, the base unit being configured for stationary installation with respect to the building structure, typically for stationary installation on a floor of the building structure;wherein the balcony unit and the attachment unit are connected via a first connecting element (130), wherein the attachment unit and the base unit are connected via a second connecting element (230), wherein the attachment unit is movable relative to the base unit and wherein the balcony unit is movable relative to the attachment unit, characterized in that the attachment unit comprises a first rail (442) which is part of both the first connecting element and the second connecting element.; 2. Balcony system according to claim 1, wherein the first connecting element connects the balcony unit and the attachment unit via the first rail in a first connecting region (131) and the second connecting element connects the attachment unit and the base unit via the first rail in a second connecting region (231), wherein the first connecting region and the second connecting region extend on different sides of the first rail.

3. Balcony system according to claim 2, wherein the first connecting region and the second connecting region extend on opposite, lateral sides of the first rail, in particular wherein the first rail is arranged on the underside of the attachment unit, the first connecting region extends on a laterally outer side of the first rail and the second connecting region extends on a laterally inner side of the first rail.

4. Balcony system according to one of the preceding claims, wherein a) the first connecting element has a first rail system which comprises the first rail and two spaced-apart roller units (273, 275) arranged on the balcony unit, whose rollers engage in the first rail; and / or b) the second connecting element has a second rail system which comprises the first rail and two spaced-apart roller units (283, 285) arranged on the base unit, the rollers of which engage in the first rail.

5. Balcony system according to one of the preceding claims, wherein the first rail has a double T-profile.

6. Balcony system according to one of the preceding claims, wherein the counterforce unit comprises a counterweight (125) for compensating at least a large part of the forces acting on the balcony unit, wherein the counterweight is arranged in the base unit.

7. Balcony system according to one of the preceding claims, wherein the attachment unit comprises a support element (228) which is designed to transmit force to the building structure before, during and after a relative movement between the attachment unit and the base unit which is stationary with respect to the building structure, or wherein the balcony system comprises an attachment element (428) which is arranged at the building opening or on a ledge (11) of the building opening.

8. Balcony system according to one of the preceding claims, wherein the balcony unit has a height in a rear region at the first connecting element which is greater than a height of the balcony unit in a second region at the front end of the balcony unit, wherein the height offset (414) occurs on the underside of the balcony unit.

9. Balcony system according to one of the preceding claims, wherein the balcony unit comprises a retaining device (114), wherein the retaining device comprises a first lateral railing section (330) and a second lateral railing section (340), wherein the first lateral railing section has a first parapet part (334) with a first central joint (336) for folding the first parapet part and the second lateral railing section has a second parapet part (344) with a second central joint (346) for folding the second parapet part.

10. Balcony system according to one of the preceding claims, wherein the balcony system has a first locking device which, in the locked state, prevents the relative movement of the attachment unit and the base unit, and a second locking device which, in the locked state, Relative movement of the balcony unit and the attachment unit is prevented, whereby the first locking device can only be released after a retaining device of the balcony unit has been installed and / or whereby the second locking device cannot be released before the first locking device.

11. Use of a balcony system according to one of the preceding claims as a temporary balcony for a building opening, typically for a window.

12. A method for setting up a temporary balcony, comprising: Installing a balcony system according to any one of claims 1 to 10 in a building structure having a building opening, wherein installing the balcony system comprises installing the base unit of the balcony system in a fixed position relative to the building structure; Moving the top unit relative to the base unit so that the balcony unit connected to the top unit is moved towards the building opening; and Moving the balcony unit relative to the attachment unit so that the balcony unit projects out of the building opening, wherein the movement of the attachment unit relative to the stationary base unit and the movement of the balcony unit relative to the attachment unit take place via a first rail, wherein the first rail serves both to connect the attachment unit and the base unit and to connect the balcony unit and the attachment unit.

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