Elevator system for a building

Abstract

An elevator system (1) for a building, comprising: a car (10); a landing door assembly (20) at one floor and comprising guide means (21) and at least two door groups (22a, 22b, 22c, 22d) arranged in sequence; each door group comprising at least one panel (23), one panel of a door group partly overlaps with one panel of the other door group when the landing door is closed; a coupling system (30) for selectively coupling the car door (11) to one or more door groups, comprising: - a housing portion (31) for each door group, integral with the latter; - coupling arms (32) in the same number as the groups, each coupling arm (32) being integral with the car (10) and movable along a first direction on the car (10) and along a second direction towards / away the landing door assembly (20) for selectively engaging one of the housing portions (31).

Description

[0001] DESCRIPTION

[0002] ELEVATOR SYSTEM FOR A BUILDING

[0003] Technical field

[0004] The present invention relates to an elevator system for a building. The present invention is particularly advantageous for moving people and various goods inside the building, including motor vehicles. It can therefore be applied in garages, residential buildings with parking slots integrated or for storing goods.

[0005] Background art

[0006] In this context, there are known solutions to transport people, vehicles and goods along a building. Such solutions often incorporate a simple lift platform or an elevator car, but they are very basic and constructively cumbersome. While being suitable for standard solutions with one or multiple separated landing exits at each floor, they cannot be used for specific solutions that require high customization, versatility and compactness.

[0007] An example of a specific solution that have these requirements may be a residential building having a plurality of stories. The building is designed to have two or more apartments, showrooms, warehouses, etc. per floor and a plurality of parking slots (two, three, four, ...) flanked on the same floor in correspondence of the apartment. The described known solutions cannot satisfy the design requirements. Also, they are not suitable for a luxury context.

[0008] Disclosure of the invention

[0009] In this context, the technical task underpinning the present invention is to propose an elevator system, which obviate the above-cited drawbacks of the prior art.

[0010] In particular, it is an object of the present invention to propose an elevator system which is provided with multiple adjacent landing exits, while being versatile and compact.

[0011] Another object of the present invention is to make available an elevator system, which is able to provide multiple adjacent landing exits even under conditions of limited space.

[0012] The stated technical task and the specified objects are substantially achieved by an elevator system for a building, comprising:

[0013] a car movable in a shaft and comprising a car door;

[0014] at least one landing door assembly provided at one floor and comprising guide means and at least two door groups arranged in sequence along said guide means;

[0015] each door group comprising at least one panel, the door groups being arranged so that one panel of a door group partly overlaps with one panel of the other door group when the landing door assembly is in a closed door configuration;

[0016] a coupling system for selectively coupling the car door to one or more door groups simultaneously, said coupling system comprising:

[0017] - a housing portion for each door group, the housing portion being integral with the respective door group;

[0018] - coupling arms in at least the same number as the groups, each coupling arm being integrally mounted on the car so as to move together with it along the shaft, each coupling arm being mounted so as to be movable along a first direction on the car, each coupling arm being also movable along a second direction towards / away the landing door assembly for selectively engaging one of the housing portions.

[0019] Preferably, the coupling arm is movable along the second direction between at least an extracted position, in which it engages the housing portion of a door group to operate the latter, and a retracted position, in which it is distanced and disengaged from the housing portion.

[0020] According to one embodiment, the car comprises a frame structure and a guide element for each coupling arm, the guide element being integral with the frame structure and developing according to a direction substantially parallel to the first direction, the coupling arm being slidingly mounted on the guide element. According to one embodiment, the guide means comprise a first guide and a second guide, the partly superimposed panels of the two groups are set to slide one on the first guide and the other one on the second guide.

[0021] Preferably, said at least two groups comprise telescopic panels, corresponding panels of different groups sharing the same guides.

[0022] According to one embodiment, the guide means comprise a frame support in turn comprising two opposite facing plates, the first guide and the second guide being supported in a hanging fashion respectively on the two opposite facing plates, facing each other.

[0023] According to one embodiment, the car is rotatable about a rotation axis substantially parallel to a prevailing development direction of the shaft, said coupling arm configured in the extracted portion acting as blocking means for the rotation of the car.

[0024] According to one embodiment, said at least two groups comprise telescopic panels, said landing door assembly comprising an infill panel arranged to stay in a work position in which it covers a gap between the telescopic panels and to be movable in a rest position, in which it is distanced from the telescopic panels, the passage from the work position to the rest position being caused by an external force linked to the moving of telescopic panels of a different group.

[0025] Prefrably, the infill panel is hinged to a frame of the landing door assembly so that it is brought in the rest position directly by the pushing action of the moving telescopic panel.

[0026] According to one embodiment, the groups are four and are arranged in sequence, one adjacent to the other, along the guide means, the coupling system comprising four coupling arms slidingly mounted on corresponding four guide element integral with a support frame of the car.

[0027] Preferably, at least two guide elements are arranged on two different rows and develops so as to at least partly overlap, one above the other.

[0028] Brief description of drawings

[0029] Further features and advantages of the present invention will become more apparent from the indicative and thus non-limiting description of a preferred but non-exclusive embodiment of an elevator system, as illustrated in the appended drawings, in which:

[0030] - figures 1 and 2 illustrate a part (car door) of an elevator system, according to the present invention, in a perspective view, respectively in curvilinear and linear versions;

[0031] - figure 3 illustrates a part (landing door assembly) of an elevator system, according to the present invention, in a perspective view;

[0032] - figure 4 illustrates a top view of the landing door assembly of figure 3; - figure 5a illustrates a perspective view of the landing door assembly in a closed door configuration;

[0033] - figure 5b illustrates a zoom of the door groups arranged at one overlapping landing of figure 5a;

[0034] - figure 6a illustrates a perspective view of the landing door assembly in an open door configuration;

[0035] - figure 6b illustrates a zoom of the door groups arranged at one overlapping landing of figure 6a;

[0036] - figure 7 illustrates a schematic view of a part (coupling system) of the elevator system, according to the present invention;

[0037] - figure 8 illustrates one embodiment of a part (guide means) of the elevator system, according to the present invention, in a sectional view; - figure 9 illustrates one embodiment of a part (frame structure) of the car door of figure 1 ;

[0038] - figures 10a and 10b illustrate a part (infill panel) of the landing door assembly of figure 3, in a top sectional view, respectively in working and rest positions;

[0039] - figure 11 illustrates a plurality of overlapping landings that can be reached by means of the embodiment illustrated in previous figures.

[0040] Detailed description of preferred embodiments of the invention With reference to the figures, reference numeral 1 indicates an elevator system. The elevator system 1 comprises a car 10 movable in a shaft. In particular, the shaft develops along a prevailing direction, which is typically vertical. The car 10 comprises a car door 11.

[0041] The elevator system 1 comprises at least one landing door assembly 20 provided at one floor.

[0042] The landing door assembly 20 comprises guide means 21. Preferably, the guide means 21 develop along a guide direction, which can be either linear or curvilinear.

[0043] The landing door assembly 20 comprises at least two door groups 22a, 22b arranged in sequence along the guide means 21. In other words, the door groups 22a, 22b are adjacent along the guide means 21.

[0044] In particular, the door groups 22a, 22b are mounted on the guide means 21 to slide on them along an opening / closing direction parallel to the guide direction.

[0045] Each door group 22a, 22b comprises at least one panel 23. The door groups 22a, 22b are arranged so that one panel 23 of a group 22a, 22b partly overlaps with one panel 23 of the other group 22a, 22b. In particular, this is referred to a closed-door configuration of the landing door assembly 20.

[0046] According to one embodiment, both door groups 22a, 22b have a single panel 23.

[0047] According to one alternative embodiment, one of the groups 22a, 22b comprises telescopic panels 23 and the other group 22a, 22b have a single panel 23. In this case, the last panel 23 of the telescopic door group 22a, 22b partly overlaps with the single panel 23 of the other group 22a, 22b.

[0048] According to one alternative embodiment, both groups 22a, 22b comprise telescopic panels 23. In this case, since the telescopic panels 23 of a group 22a, 22b are arranged in sequence as well, the last panel 23 of a door group 22a, 22b partly overlaps with the first panel 23 of the other door group 22a, 22b. This arrangement allows to define different landing accesses for the landing door assembly 20. In particular, each group 22a, 22b contributes to define at least one landing access. Depending on the design of the specific solution, one group 22a, 22b may contribute to define even two landing accesses or more. Indeed, as will become clear from the description below, the groups 22a, 22b are not bound to move in one specific direction when opening / closing, as it is standard.

[0049] The expression “door group” here refers to the function of a door, that is selectively opening / closing a landing access. As already described above, this can be achieved by a single panel as well as by multiple telescopic panels. The present invention works indistinctly with two, four, six, eight, etc. telescopic panels per group.

[0050] The elevator system 1 comprises a coupling system 30 for selectively coupling the car door 11 to one or more door groups 22a, 22b simultaneously. In particular, the coupling system 30 is enabled only when the car 10 stops at the floor.

[0051] The coupling system 30 comprises a housing portion 31 for each door group 22a, 22b. The housing portion 31 is integral with the group 22a, 22b. In particular, the housing portion 31 is integral with one panel 23 of each group 22a, 22b.

[0052] Preferably, the housing portion 31 is connected with the carriages which realize the sliding of the door group 22a, 22b on the guide means 21.

[0053] The coupling system 30 comprises coupling arms 32 in at least the same number as the groups 22a, 22b.

[0054] Each coupling arm 32 is integrally mounted on the car 10 so as to move together with the latter along the shaft.

[0055] Each coupling arm 32 is mounted so as to be movable along a first direction on the car 10. In particular, the first direction is associated with the opening / closing of the door groups 22a, 22b. Consequently, the first direction is either linear or curvilinear depending on whether the guide direction is linear or curvilinear (standard door or round door). Preferably, the first direction is substantially parallel to an opening / closing direction of at least one of the door groups 22a, 22b.

[0056] Each coupling arm 32 is also movable along a second direction towards / away the landing door assembly 20 for selectively engaging one of the housing portions 31. In particular, the movement of the coupling arm 32 along the second direction is such that the distance of one end of it from the car 10 increases / decreases when moving towards / away the landing door 20.

[0057] In particular, the second direction is inclined with respect to the first one. Preferably, the second direction is substantially perpendicular to the first one. In particular, from a point of view of a user looking at the landing door standing at the floor of the building, the first direction is from right to left (or vice versa) and the second direction is towards / away the user.

[0058] Preferably, the coupling arm 32 is movable along the second direction between at least an extracted position, in which it engages a housing portion 31 of a door group 22a, 22b to operate the latter, and a retracted position, in which it is distanced and disengaged from the housing portion 31.

[0059] In particular, the coupling arm 32 is configured in the retracted position when the car 10 is moving along the shaft. When the car 10 stops at the floor in correspondence of the landing door assembly 20, the coupling arm 32 is moved in the extracted position. In other words, the retracted position is the standard position for the coupling arm 32 except for when it is necessary to open / close the landing door assembly 20.

[0060] The coupling arm 32 in the extracted position drags the respective door group 22a, 22b in motion. In other words, the coupling arm 32 acts as an operator for the respective door group. In case one or more groups have telescopic panels, as well known in the state of the art of telescopic panels, the motion is imparted to one of the panels and the others are consequently dragged in motion by known means, with different speeds to achieve complete opening or complete closing at the same time. Preferably, each coupling arm 32 is independently motorized.

[0061] The proposed solution is particularly advantageous with the presence of several adjacent landings with virtually overlapping passages, as illustrated in figures 2 and 3. In such a situation, it is not possible to have a dedicated landing door for each landing access for reasons of limited space. The proposed solution envisages the use of adjacent door groups which are partly overlapped and dragged into motion by coupling arms 32 which are on the car 10 and selectively engageable with them with a movement along the second direction towards / away the landing door assembly 20.

[0062] This is the case, for example, of a storey of a residential building with adjacent parking slots, overlapping at corners to save space.

[0063] The proposed invention thus envisages independent multiple actuations which allow to simultaneously move the selected groups of panels, even in different directions.

[0064] Therefore, according to the proposed solution each coupling arm 32 could be selectively engageable with one of the housing portions 31 at a time and consequently with one of the groups 22a, 22b. The coupling arm 32 is potentially not bound to work together with the same housing portion 31 (that is, the same group 22a, 22b) every time, but it changes depending on which landing access is to be opened. This key concept results more effective when multiple groups are present.

[0065] Moreover, the coupling system 30 allows to provide all landing door assemblies 20 as passive and dragged by the coupling arm motors. This means that it is sufficient to have a number of motors equal to the coupling arms 32 on the car 1 (two, three, four, etc.) instead of hundreds like in the known solutions.

[0066] Appropriately, the elevator system 1 comprises a control unit (not illustrated) configured to operationally command each coupling arm 32 in the retracted or extracted position depending on the desired outcome and, when the coupling arm 32 is in the extracted position, also how much it needs to move along the first direction to achieve the opening of the desired landing access.

[0067] In particular, the control unit receives a signal identifying a floor and a landing access to be opened. The control unit commands the car to move to the requested floor and then, when the car is still at the requested floor, commands the coupling arms 32 on the basis of which door groups must be opened to achieve opening of the requested landing access.

[0068] According to one embodiment, one of the coupling arm 32 also acts as door operator for the car door 11.

[0069] Preferably, the landing door assembly 20 comprises a lock acting on the housing portion 31 to prevent motion of the group 22a, 22b on the guide means 21. The coupling arm 32 may interact with the housing portion 31 to disengage the lock in multiple alternative ways. For example, the coupling arm 32 may comprise a fixed head and disengagement is given after exceeding a speed or force threshold. In alternative, the coupling arm 32 may comprise a movable head (either expandable or compressible) to disengage the lock.

[0070] According to one embodiment, the coupling arm 32 is slidingly mounted on a guide element 33 integral with a frame structure 12 of the car 10. In particular, the guide element 33 develops according to a direction substantially parallel to the first direction. In other words, the guide element 33 allows the coupling arm 32 to move along the first direction. Advantageously, the guide element 33 define the travel limits of the coupling arm 32 and consequently of the group 22a, 22b along the guide means 21. Since each coupling arm 32 can be operated independently and in different ways, each group 22a, 22b does not have a set travel limit or travel direction on the guide means 21, but it depends on how is operated the coupling arm 32 to which it is coupled. This allows high customizability and versatility in realizing solutions incorporating the present invention.

[0071] Preferably, the guide element 33 is a guide slot obtained on the frame structure 12.

[0072] Preferably, the landing door assembly 20 comprises jambs 25 at two opposite ends. The groups 22a, 22b are located all between the jambs 25. Preferably, the landing door assembly comprises a frame 26 defining a central opening to accommodate the groups 22a, 22b. Preferably, the frame 26 is laterally delimited by the jambs 25. This means that between one group and the adjacent one(s) there is no frame structure, as can be seen from figure 3.

[0073] Preferably, the guide means 21 comprise at least a first guide 210 and a second guide 210. The partly superimposed panels 23 of the two groups 22a, 22b are set to slide one on the first guide 210 and the other one on the second guide 210.

[0074] Accordingly, the guides 210 are arranged one after the other in a direction away of the shaft. In other words, they are offset.

[0075] Advantageously, when the groups 22a, 22b are telescopic, corresponding panels 23 of different groups 22a, 22b share the same guides 210. As known, the panels 23 of a telescopic group slide at different speeds to achieve complete opening / closing of all panels at the same time. For “corresponding panels” in a telescopic context is intended the panels of different groups which occupy the same relative position inside the group (for example, external panel, intermediate panel, internal panel, etc. depending on the number of panels of each group).

[0076] According to one embodiment, the guide means 21 comprise a frame support 211 for the guides 210. The frame support 211 comprises two opposite facing plates 212. The first guide 210 and the second guide 210 are supported in a hanging fashion respectively on the two opposite facing plates 212. The two guides 210 face each other.

[0077] In particular, the two guides 210 are not directly connected, but there is void between them.

[0078] This mounting solution is compact and goes well with the concept of overlapping landings, in view of sharing the same guides from groups of adjacent landing accesses.

[0079] Preferably, the frame support 211 is a profile with a C- or U-shaped cross section, the guides 210 are enclosed in the inner space defined.

[0080] According to the illustrated embodiment, the groups 22a, 22b have telescopic panels 23, in particular two panels 23 per group 22a, 22b.

[0081] As already suggested above, the presence of two groups 22a, 22b is the minimum configuration for the landing door assembly 20 according to the present invention. The same solution can be extended without exerting an inventive effort to three, four, etc. groups.

[0082] In particular, the embodiment illustrated in figures envisages four groups 22a, 22b, 22c, 22d of telescopic panels 23 with as many landing accesses.

[0083] In this embodiment, the telescopic panels 23 are two per group 22a, 22b, 22c, 22d and all four groups 22a, 22b, 22c, 22d share the same two guides 210.

[0084] The coupling system 30 comprises four coupling arms 32 slidable in corresponding four guide elements 33.

[0085] Preferably, the guide elements 33 are all obtained on a frame structure 12 of the car 10. Preferably, this frame structure 12 lies on top of the car 10. Advantageously, at least two guide elements 33 are arranged on two different rows and develops so as to at least partly overlap, one above the other. In particular, one row is above the other so it is possible to define a top row and a bottom row.

[0086] Preferably, all four guide elements 33 lay on two different rows, two per row. Accordingly, the housing portion 31 of the four groups 22a, 22b, 22c, 22d are arranged on two different heights with respect to the floor. In particular, from right to left the housing portions 31 of the first two groups 22a, 22b are arranged at a first height and the housing portions 31 of the second two groups 22c, 22d are arranged at a second height. Therefore, the two coupling arms 32 of the top row are associated with two groups 22a, 22b, 22c, 22d and the two coupling arms 32 of the bottom row are associated with the other two groups 22a, 22b, 22c, 22d.

[0087] In particular, the landing door assembly 20 has a central opening. The four groups 22a, 22b, 22c, 22d are divided in two couples, first two groups 22a, 22b and second two groups 22c, 22d. The first two groups 22a, 22b are set to open according to an opening direction which is opposite to the opening direction of the second two groups 22c, 22d. This means that the coupling arms 32 of a row move in one direction during opening while the coupling arms 32 of the other row move in the opposite direction.

[0088] In the case described of four groups 22a, 22b, 22c, 22d, as illustrated in figure 5, the central passages overlap with the adjacent ones in both corners. This means that at least for one of those passages (dependently from various boundary conditions) there is the need to move multiple groups to free the access. In this case, the first two groups 22a, 22b from right are moved in one direction while the third group 22c is moved in the opposite direction. Instead, for opening the second group 22b from right, it is sufficient two move in one direction the first two groups 22a, 22b from right.

[0089] This exemplary embodiment well expresses the potential and versatility of the present invention.

[0090] Preferably, the two guide elements 33 of a row are different in length. In particular, the external guide element 33 is shorter than the internal guide element 33. External and internal are referred with respect to the boundaries of the frame structure 12 on which they are obtained.

[0091] The internal guide element 33 are the one at least partly overlapping.

[0092] In particular, the external guide element 33 of a row is arranged on an opposite side of the external guide element 33 of the other row.

[0093] Preferably, the coupling arm 32 of the internal guide element 33 of the bottom row also acts as operator for the car door 11.

[0094] Preferably, the coupling arms 32 of the bottom row are supported on the car roof while the coupling arms 32 of the top row are suspended on a reticle. Preferably, the coupling arms 32 of a row are configured to slide according to the same direction of the car door 11 and the coupling arms 32 of the other row are configured to slide in opposite direction with respect to the car door 11.

[0095] The above-described solution is just one of the various applications that the present invention allows. The specific design is strongly dependent on the boundary conditions, such as available spaces, number of passages (in this case, parking slots), etc.

[0096] It is also to be noted that the proposed solution with one landing door assembly 20 at one floor is the minimum configuration for the present invention. It is clear that the latter becomes even more advantageous and functional when there are multiple floors having at least one landing door assembly 20 as described, since the retractable arms 32 arranged on the car can be used for each coupling system 30. Moreover, more than one landing door assembly 20 may be envisaged at each floor.

[0097] According to the illustrated and preferred embodiment, the car door 11 has a curvilinear opening, the guide means 21 have a curvilinear development to define a curvilinear trajectory of the panels 23 and the panels 23 themselves are curvilinear.

[0098] According to an alternative embodiment (not illustrated), they are all linear. Advantageously, the car 10 is rotatable about an axis which is substantially parallel to a prevailing direction of development of the shaft. In this case, the coupling arm 32 in the extracted position also acts as blocking means for the rotation of the car 10. Therefore, the car 10 when still at one floor is prevented from rotating directly from the coupling system 30. In this way, it is also avoided the collision between the car coupling system and the release and drag wheels of the landing mechanism.

[0099] According to one embodiment, illustrated in figure 8, the landing door assembly 20 comprises an infill panel 24 (or slot cover). The infill panel 24 is arranged to stay in a work position, in which it covers a gap between two telescopic panels 23, and to be movable in a rest position, in which it distanced from the telescopic panels 23. In particular, the passage from the work position to the rest position is caused by an external force linked to the moving of a telescopic panel 23. Preferably, the telescopic panel 23 causing the passage is from a different group 22a, 22b, 22c, 22d.

[0100] In this way, in a context of sharing of same guides 210, it is assured that the infill panel 24 performs its task as long as the group 22a, 22b, 22c, 22d is closed, while allowing the passage of the telescopic panel 23 when the group 22a, 22b, 22c, 22d is opening / opened.

[0101] Preferably, the infill panel 24 is hinged to a frame of the landing door assembly 20 so that it is brought in the rest position directly by the pushing action of an opening telescopic panel 23. The infill panel 24 maintains its rest position as long as said telescopic panel 23 is configured in an opening state.

[0102] Preferably, the infill panel 24 may have a hook that holds it in position when the doors are closed. The hook is unlocked to allow it to open when the panel 23 moves.

[0103] According to one embodiment, the landing door assembly 20 also comprises an anti-finger pinch system associated with the infill panel 24. In particular, during the closing of the telescopic panel 23, the impact energy is controlled.

[0104] Figure 11 illustrates the potential and versality of the exemplary embodiment particularly described above and shown in the previous figures, being able to realize in a compact fashion a plurality of adjacent overlapping landings.

[0105] The features of the elevator system are clear from the above description, as are the advantages.

[0106] In particular, the proposed solution allows multiple adjacent accesses to be placed on the floor, overlapping the relative landing areas. Without such overlapping the maximum landing door encumbrance would be greater, since the relative angle between the first and last landings increases.

[0107] Moreover, the above advantage is achieved with a simplified structure of the elevator system since it is possible to have dedicated motors in a number equal to the coupling arms, which are few and on the car (therefore shared with the whole building), instead of having dedicated motors for each door of the building.

[0108] Moreover, the proposed solution allows to independently operate the landing accesses one from the other. Also, groups at landing have different directions of opening / closing between them and with respect to the car door.

[0109] Moreover, the proposed solution allows the use of curvilinear telescopic panels with multiple adjacent landing accesses.

[0110] Moreover, several different mechanisms are located on the same car roof apt to open different mechanisms of the landing door assembly. Groups of adjacent entrances are moved simultaneously with independent and different movement.

[0111] Moreover, with a linear actuator the coupling arm is moved in extension toward the landing door assembly and retracted toward the car to allow the possible rotation of the car stopped at one floor.

[0112] Moreover, the encumbrance of the mechanisms are contained by providing plates and guides that simultaneously support panels and carriages of adjacent entrances. Adjacent entrances thus share the same plates, the panels slide on the same guides.

[0113] Moreover, the door groups of the present invention can be certified as fire resistant.

Claims

CLAIMS1. An elevator system (1 ) for a building, comprising:a car (10) movable in a shaft and comprising a car door (11 );at least one landing door assembly (20) provided at one floor and comprising guide means (21) and at least two door groups (22a, 22b, 22c, 22d) arranged in sequence along said guide means (21);each door group (22a, 22b, 22c, 22d) comprising at least one panel (23), the door groups (22a, 22b, 22c, 22d) being arranged so that one panel (23) of a door group (22a, 22b, 22c, 22d) partly overlaps with one panel (23) of the other door group (22a, 22b, 22c, 22d) when the landing door assembly (20) is in a closed door configuration;a coupling system (30) for selectively coupling the car door (11) to one or more door groups (22a, 22b, 22c, 22d) simultaneously, said coupling system (30) comprising:- a housing portion (31) for each door group (22a, 22b, 22c, 22d), the housing portion (31) being integral with the respective door group (22a, 22b, 22c, 22d);- coupling arms (32) in at least the same number as the groups (22a, 22b, 22c, 22d), each coupling arm (32) being integrally mounted on the car (10) so as to move together with it along the shaft, each coupling arm (32) being mounted so as to be movable along a first direction on the car (10), each coupling arm (32) being also movable along a second direction towards / away the landing door assembly (20) for selectively engaging one of the housing portions (31).

2. The elevator system (1) according to claim 1, wherein the coupling arm (32) is movable along the second direction between at least an extracted position, in which it engages the housing portion (31) of a door group (22a, 22b, 22c, 22d) to operate the latter, and a retracted position, in which it is distanced and disengaged from the housing portion (31).

3. The elevator system (1) according to claim 1 or 2, wherein the car (10) comprises a frame structure (12) and a guide element (33) for eachcoupling arm (32), the guide element (32) being integral with the frame structure (12) and developing according to a direction substantially parallel to the first direction, the coupling arm (32) being slidingly mounted on the guide element (33).

4. The elevator system (1) according to any one of the preceding claims, wherein the guide means (21) comprise a first guide (210) and a second guide (210), the partly superimposed panels (23) of the two groups (22a, 22b, 22c, 22d) are set to slide one on the first guide (210) and the other one on the second guide (210).

5. The elevator system (1) according to claim 4, wherein said at least two groups (22a, 22b, 22c, 22d) comprise telescopic panels (23), corresponding panels (23) of different groups (22a, 22b, 22c, 22d) sharing the same guides (210).

6. The elevator system (1) according to claim 5, wherein the guide means (21) comprise a frame support (211) in turn comprising two opposite facing plates (212), the first guide (210) and the second guide (210) being supported in a hanging fashion respectively on the two opposite facing plates (212), facing each other.

7. The elevator system (1) according to any one of the preceding claims, wherein the car (10) is rotatable about a rotation axis substantially parallel to a prevailing development direction of the shaft, said coupling arm (32) configured in the extracted portion acting as blocking means for the rotation of the car (10).

8. The elevator system (1) according to any one of the preceding claims, wherein said at least two groups (22a, 22b, 22c, 22d) comprise telescopic panels (23), said landing door assembly (20) comprising an infill panel (24) arranged to stay in a work position in which it covers a gap between the telescopic panels (23) and to be movable in a rest position, in which it is distanced from the telescopic panels (23), the passage from the work position to the rest position being caused by an external force linked to the moving of telescopic panels (23) of a different group (22a, 22b, 22c, 22d).

9. The elevator system (1) according to claim 8, wherein the infill panel (24) is hinged to a frame of the landing door assembly (20) so that it is brought in the rest position directly by the pushing action of the moving telescopic panel (23).

10. The elevator system (1) according to any one of the preceding claims, wherein the groups (22a, 22b, 22c, 22d) are four and are arranged in sequence, one adjacent to the other, along the guide means (21), the coupling system (30) comprising four coupling arms (32) slidingly mounted on corresponding four guide elements (33) integral with a support frame (12) of the car (10).

11. The elevator system (1) according to claim 10, wherein at least two guide elements (33) are arranged on two different rows and develops so as to at least partly overlap, one above the other.

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