Elevator car and method for producing an elevator car

Abstract

Elevator car for transporting persons and goods, comprising multiple wall sections, in particular a car floor, at least three side walls, and a car ceiling, and with at least one door opening. The car floor, the car ceiling, and at least one side wall are made of at least one thermoplastic material. The car ceiling and / or at least one side wall and / or the car floor is / are connected to a conveying and / or safety gear of the car via at least one load transfer element for load transfer.

Description

[0001] The invention relates to an elevator cabin for transporting persons and goods, comprising a plurality of wall sections – in particular a cabin floor, at least three side walls, and a cabin ceiling – and at least one door opening. The invention further relates to a method for manufacturing such an elevator cabin. The elevator cabin according to the invention is, in particular, a component of a construction site elevator for transporting persons and / or goods. The elevator cabin can also be used, in particular, in wind turbines or during the construction of wind turbines.

[0002] Elevators with elevator cars are known in practice in various designs. The elevators are generally moved, particularly vertically, by means of a conveying device attached to the elevator car. This conveying device often serves as both a conveying and safety device. Known elevator cars are generally made of metallic materials, or at least predominantly of metallic materials. The load-bearing structure is primarily provided by metallic support elements into which the loads are transferred and dissipated. The car itself essentially functions as a protective shell to prevent injuries to passengers or to protect against falling objects. The manufacture of individual elevator components from plastic is also known, although these components are then made of fiber composites or fiber-reinforced plastics.This entails high costs, and moreover, these composite materials exhibit difficult recycling behavior.

[0003] In contrast, the invention addresses the technical problem of providing an elevator car of the type mentioned above, characterized by a simple and inexpensive design, relatively cost-effective to manufacture, capable of reliably absorbing and dissipating all loads and forces, and exhibiting optimal recyclability. The invention further addresses the technical problem of providing a corresponding method for manufacturing such an elevator car.

[0004] To solve the technical problem, the invention teaches an elevator cabin for transporting persons and goods, with a plurality of wall parts - in particular wall parts in the form of a cabin floor, in the form of side walls, preferably at least three side walls and in the form of a cabin ceiling - and with a door opening, wherein at least one wall part - in particular the cabin floor, the cabin ceiling and at least two side walls, preferably at least three side walls - are made of at least one thermoplastic material or essentially of at least one thermoplastic material and wherein at least one wall part - in particular the cabin ceiling and / or at least one side wall and / or the cabin floor - is / are connected to a conveying device or to a conveying and / or catching device of the cabin via at least one load transfer element for load transfer.

[0005] Within the scope of the invention, that at least one wall section – the cabin floor and / or at least one side wall and / or the cabin ceiling – is made essentially of at least one thermoplastic material means, in particular, that this wall section is made of the thermoplastic material to at least 85%, preferably at least 90%, and preferably at least 95% of its volume. For this volume specification, a load-bearing element integrated into the wall section and any connecting elements attached thereto are exemptly disregarded. Within the scope of one embodiment of the invention, that the cabin floor is made of at least one thermoplastic material or is made essentially of at least one thermoplastic material means, in particular, that at least one or a planar floor component of the cabin floor – which preferably extends over the entire surface of the cabin floor oressentially extends over the entire surface of the cabin floor - is made of thermoplastic material or is essentially made of thermoplastic material.

[0006] It is within the scope of the invention that the loads acting on the elevator car are absorbed by the car itself as a supporting structure and transferred via at least one load transfer element into the conveying device or into the conveying and / or safety gear. The plastic structure of the elevator car itself thus forms a supporting structure for absorbing and transferring the loads or forces acting on the car. The term force transfer element could also be used instead of load transfer element. The conveying device of the elevator car is expediently designed as a conveying and safety gear. According to one embodiment, the process, or rather the vertical movement of the elevator car, is carried out by means of a conveying device in the form of a cable winch or a continuous cable winch. According to another embodiment, the process, or rather the vertical movement of the elevator car, is carried out by means of a conveying device in the form of a cable winch or a continuous cable winch.Vertical movement of the elevator car is achieved by means of a conveying device meshing with a rack and pinion.

[0007] Furthermore, it is within the scope of the invention that the elevator car according to the invention has a rectangular cross-section and is preferably cuboid overall. The elevator car preferably has a floor, three side walls, and a ceiling, as well as a door opening on one side. The side walls are advantageously oriented perpendicular or substantially perpendicular to the floor and ceiling. Furthermore, preferably, two side walls form an angle of 90% or approximately 90%. It is also within the scope of the invention that the area of ​​each side wall is larger than the area of ​​the floor and / or the ceiling. However, other configurations of the elevator car are also possible. According to one embodiment, the elevator car has a round cross-section, particularly a circular or oval one.In this case, the at least three side walls of the elevator car consist of side walls with an arcuate cross-section, in particular side walls with a semi-circular or semi-oval cross-section. This arcuate cross-section would then be expediently implemented at least for the rear side wall and for the two side walls.

[0008] A particularly recommended embodiment of the invention is characterized in that the thermoplastic material of the wall sections of the elevator car is a polyolefin, and in particular a polyethylene and / or a polypropylene. Polyethylene is particularly preferred as the material. According to a further embodiment, the thermoplastic material of the wall sections of the elevator car is a polyamide. In one embodiment of the invention, polyethylene, polypropylene, or polyamide also refer to copolymers of polyethylene, polypropylene, or polyamide.

[0009] According to a highly preferred embodiment of the invention, the load is transferred via at least one load transfer element arranged on or in a wall section. Advantageously, the load is transferred via at least one load transfer element arranged on or in the cabin ceiling and / or via at least one load transfer element arranged on or in at least one side wall – preferably the rear side wall. In principle, one or at least one load transfer element can also be arranged on or in the cabin floor. Within the scope of the invention, "rear side wall" refers in particular to the side wall that is located opposite the door opening of the elevator cabin.

[0010] A particularly preferred embodiment – ​​which is of special importance within the scope of the invention – is characterized in that the load-dissipating element is integrated into the plastic of a wall section of the elevator car. According to a recommended embodiment of the invention, the at least one load-dissipating element is integrated into the plastic of at least one side wall – preferably the rear side wall. Advantageously, the at least one load-dissipating element, or the load-dissipating element in general, is surrounded by the plastic of the wall section, in particular completely surrounded or substantially completely surrounded. In this embodiment, the at least one load-dissipating element, or the load-dissipating element in general, is preferably surrounded by the plastic of the at least one side wall – advantageously the rear side wall – in particular completely surrounded or substantially completely surrounded.- According to another embodiment of the invention, the at least one load transfer element is arranged under the cabin ceiling or directly under the cabin ceiling. Preferably, the at least one load transfer element is positively engaged with the underside of the cabin ceiling or with the plastic of the cabin ceiling.

[0011] It is within the scope of the invention that the load-dissipating element is made, at least substantially, of a material different from the thermoplastic material of the wall part(s). Preferably, the load-dissipating element is made of a metallic material or substantially of a metallic material. According to a further embodiment, the load-dissipating element could be made of, or substantially of, a reinforced plastic – in particular a fiber-reinforced plastic.

[0012] In principle, the load transfer element can have different forms. For example, the load transfer element could simply be a threaded insert, preferably integrated into the plastic of the associated wall section of the cabin. The load transfer element could also be designed as a load transfer rod connected to the associated wall section or – in a highly preferred embodiment – ​​integrated into the associated wall section. It is within the scope of the invention that the at least one load transfer element extends over at least a portion of the surface of the associated wall section of the cabin. Thus, the load transfer element can be designed as a threaded insert integrated into the wall section with attached fixing struts that preferably extend into the plastic of the wall section, thereby ensuring a planar extension of the load transfer element.Advantageously, in this embodiment, a plurality of threaded inserts are integrated into the wall part or into the plastic of the wall part, and preferably these threaded inserts are connected to the conveying device or to the conveying and / or catching device via connecting elements.

[0013] A particularly preferred embodiment of the invention is characterized in that the at least one load-dissipation element is a planar load-dissipation element and is preferably designed as a load-dissipation plate or as a load-dissipation grid or the like. The planar load-dissipation element – ​​in particular the load-dissipation plate and / or the load-dissipation grid – is connected over its entire surface to the associated wall section or is integrated over its entire surface into the plastic of the associated wall section. It is recommended that the planar load-dissipation element – ​​in particular the load-dissipation plate and / or the load-dissipation grid – is connected over its entire surface to the associated cabin ceiling and / or over its entire surface to the associated side wall – in particular to the rear side wall.Preferably, the planar load transfer element – ​​in particular the load transfer plate and / or the load transfer grid – is integrated planarly into the plastic of the associated cabin ceiling and / or planar into the plastic of the associated side wall – in particular the rear side wall. Preferably, the planar load transfer element is arranged parallel or substantially parallel to the surface of the associated wall section or the associated cabin ceiling and / or the associated side wall.

[0014] It is within the scope of the invention that a load transfer element is connected to the conveying device or to the conveying and / or catching device via at least one connecting element – ​​preferably via a plurality of connecting elements. Preferably, the connecting element(s) extend through the plastic of the associated wall section, preferably the plastic of the associated cabin ceiling and / or the plastic of the associated side wall, in particular the rear side wall. The connecting elements are preferably designed as metallic connecting elements. Advantageously, they extend transversely and preferably perpendicularly or substantially perpendicular to the surface of the respective wall section or to the surface of the cabin ceiling and / or to the surface of the associated side wall.The connecting elements can be, in particular, connecting rods, connecting bolts, connecting screws, and the like. Especially when threaded inserts are used as load-bearing elements within the scope of the invention, the connecting elements are preferably designed in the form of threaded rods, connecting screws, or the like.

[0015] A particularly preferred embodiment of the invention is characterized in that the planar load-dissipation element – ​​in particular a load-dissipation plate – is only partially integrated into a side wall made of thermoplastic material – in particular a rear side wall made of thermoplastic material – wherein the load-dissipation element is form-fittingly covered by the plastic of the side wall on the inside of the cabin and is free or uncovered by the plastic of the side wall on the outside of the cabin, at least over most of its surface – preferably over the entire surface. Advantageously, the planar load-dissipation element – ​​in particular the load-dissipation plate – is integrated into the plastic of the side wall on all sides and is only attached on its outer surface.The load-bearing plate is free from the plastic of the side wall, at least over most of its surface, preferably over its entire surface, towards the outside of the cabin. It is within the scope of the invention that the load-bearing plate has two opposing plate surfaces as well as lateral plate surfaces. Advantageously, the load-bearing plate is then positively integrated into the plastic of the cabin side wall with one plate surface, i.e., the plate surface facing the inside of the cabin, and with its lateral plate surfaces, and only the second plate surface, i.e., the plate surface oriented towards the outside of the cabin, is free from the plastic of the side wall.

[0016] In a particularly preferred embodiment of the invention, the conveying device or the conveying and / or catching device is arranged on the inside of the cabin. In this case, the flat load-dissipating element or load-dissipating plate is advantageously connected to the conveying device or conveying and / or catching device located inside the cabin via at least one connecting element extending through the plastic of the side wall, and in particular via a plurality of connecting elements extending through the plastic of the side wall. It is within the scope of the invention that the at least one connecting element or elements extend through the plastic of the side wall with some clearance. Advantageously, each connecting element extends through a sleeve inserted into the plastic of the side wall and extends through this sleeve with some clearance. In this way, the forces between the cabin and the conveying device or the catching device are preferably distributed.The load is transferred via the flat load-dissipation element or the load-dissipation plate by the conveying and / or safety device and not directly between the connecting elements and the side wall. According to the preferred embodiment described above, the conveying device or the conveying and / or safety device is arranged inside the car. The conveying device is expediently a winch for the elevator car. The conveying and safety device can be combined into a single unit inside the car, or they can be arranged separately and expediently connected to the flat load-dissipation element or the load-dissipation plate.

[0017] Preferably, the area of ​​the planar load transfer element or load transfer plate, in particular the area of ​​a surface of the load transfer plate – preferably with respect to a projection onto the associated side wall or rear side wall – is 8 to 40%, expediently 8 to 35%, preferably 8 to 30%, and very preferably 10 to 25% of the area of ​​the associated side wall, in particular the rear side wall of the cabin. The vertical height of the planar load transfer element or load transfer plate is recommended to be 10 to 40%, and in particular 15 to 40%, of the vertical height of the associated side wall or rear side wall. The term "vertical height" here refers to the cabin in its installed state with the cabin floor on the underside and the cabin ceiling on the upper side. It is recommended that the thickness of the planar load transfer element or load transfer plate be...The thickness of the load-bearing plate is 50 to 200%, in particular 75 to 180%, of the thickness of the associated side wall or the rear side wall, and especially of the thickness of the plastic of the associated side wall or the rear side wall. It is expedient to measure the thickness horizontally with the cabin in its erected position.

[0018] A recommended embodiment of the invention is characterized in that the cabin floor forms or comprises a load-bearing surface of the cabin and that the load or force transfer occurs solely or at least substantially via the cabin from the thermoplastic material to the at least one load-transfer element. According to a preferred embodiment of the invention, apart from the connection of the cabin floor to the at least one load-transfer element via the thermoplastic material of the cabin, no further connecting components, such as struts, supports, rods, and the like, are present between the cabin floor and the at least one load-transfer element.

[0019] A proven embodiment of the invention is characterized in that the cabin floor has at least one, or a planar, load distribution component through which the load is transferred into the cabin made of thermoplastic material. The planar load distribution component is preferably supported on at least one support component, in particular on a planar support component of the cabin floor. It is within the scope of the invention that the load distribution component and / or the support component of the cabin floor extends over the entire surface of the cabin floor, or substantially over the entire surface of the cabin floor. The planar support component of the cabin floor preferably has support elements projecting or projecting into the surface of the support component, in particular in the form of support ribs and / or support beads and / or support studs, by which support elements preferably increase the strength or stability of the cabin floor.According to a recommended embodiment of the invention, the planar load-distributing component of the cabin floor engages positively with the planar support component of the cabin floor. It is preferred that the planar load-distributing component of the cabin floor has positive-locking elements on its underside that engage with complementary positive-locking elements of the planar support component of the cabin floor. According to a recommended embodiment of the invention, the planar load-distributing component of the cabin floor is made of metal or substantially of metal, and the support component or the planar support component of the cabin floor is preferably made of thermoplastic or substantially of thermoplastic.

[0020] In principle, the support component of the cabin floor can be designed in various ways within the scope of the invention. It can, for example, be at least one support strut, a support grid, or the like. The at least one support component can be made of plastic and / or metal, or essentially of plastic and / or essentially of metal. According to one embodiment of the invention, the cabin floor or the planar load-distributing component of the cabin floor consists of at least one plastic material, and at least one support component, which can be made of metal, is connected to the cabin floor or the planar load-distributing component. Advantageously, this at least one metal support component is at least partially integrated into the plastic of the cabin floor or the plastic of the planar load-distributing component.Thus, at least one metal support component can be rotated into the plastic of the cabin floor or the plastic of the load-distributing component using a plastic rotation process. According to a recommended embodiment, a plurality of support components protrude from the underside of the cabin floor or the underside of the planar load-distributing component of the cabin floor. These support components are expediently designed as metallic support components and are partially integrated into the plastic of the cabin floor or the plastic of the load-distributing component, in particular by rotation.

[0021] A particularly preferred embodiment of the invention is characterized in that an assembly consisting of at least the cabin floor or at least one component of the cabin floor and at least one connected side wall, preferably a plurality of connected side walls, is manufactured as a single-piece or monolithic assembly made of thermoplastic material. In this case, the cabin floor or cabin floor component (especially the planar support component of the cabin floor) and the side wall or side walls form a single-piece assembly made of thermoplastic material. Preferably, at least one load-distributing element is embedded in at least one wall section, and connecting elements are expediently attached to this load-distributing element, preferably to the conveying device or to the conveying and / or catching device.- It is proven that two, and preferably three, side walls, together with the cabin floor or with at least one component of the cabin floor, form a single-piece assembly made of thermoplastic material. - A particularly recommended embodiment of the invention is characterized in that an assembly consisting of the cabin floor or at least one component of the cabin floor, at least one connected side wall (in particular, a plurality of connected side walls), and the cabin ceiling forms a single-piece or monolithic assembly made of thermoplastic material. Preferably, at least one assembly consisting of the cabin floor or at least one component of the cabin floor, at least the rear side wall, and the cabin ceiling is designed as a single-piece or monolithic assembly made of thermoplastic material.

[0022] A highly recommended embodiment, which is of particular importance within the scope of the invention, is characterized by the fact that the assembly, consisting of the cabin floor or at least one component of the cabin floor, three side walls, and the cabin ceiling, is manufactured as a single, monolithic unit made of thermoplastic material. In principle, instead of the single-piece construction of the elevator cabin according to the invention, a modular construction of the cabin is also possible. This means that the individual wall components—especially those made of thermoplastic material—are combined or connected to form the cabin. For example, the cabin floor, the side walls, and the cabin ceiling can be assembled as modular components of the elevator cabin to form the complete elevator cabin.

[0023] According to a recommended embodiment, at least one wall section and preferably one side wall of the elevator car according to the invention has reinforcing elements distributed across its wall surface or side wall surface, in particular reinforcing ribs and / or reinforcing beads distributed across the side wall surface. In this respect, the reinforcing elements can be reinforcing ribs projecting from the respective side wall surface and / or reinforcing beads embedded in the respective side wall surface. The invention is based on the understanding that the load-bearing cross-sectional area can be effectively increased by the reinforcing elements incorporated into the side wall surface.

[0024] It is within the scope of the invention that the cabin door opening is closable, and in particular, closable by means of a cabin door. A particularly preferred embodiment of the invention is characterized in that fixing elements and / or stop elements for the cabin door are provided on and / or in the side walls made of thermoplastic material, and / or on and / or in the cabin ceiling made of thermoplastic material, and / or on and / or in the cabin floor made of thermoplastic material. Advantageously, the fixing elements and / or stop elements for the cabin door are integrated into the plastic of the respective wall section. A proven embodiment of the invention is characterized in that the cabin door is designed as a roller blind, in particular as a slatted roller blind or a pleated roller blind. In principle, other embodiments of the cabin door for the elevator cabin according to the invention are also conceivable.

[0025] One embodiment of the invention is characterized in that the wall thickness of at least one side wall increases towards the load-dissipating element. According to one embodiment, this is the side wall on or in which the load-dissipating element is arranged, and the thickness of this side wall increases towards the load-dissipating element. Alternatively or additionally, the thickness of at least one side wall connected to the side wall with the load-dissipating element increases towards the load-dissipating element or towards the side wall with the load-dissipating element. It is recommended that, in the embodiments described above, the thickness of the at least one side wall increases by at least 50%, preferably by at least 75%, and preferably by at least 90%. In principle, it is within the scope of the invention that the thickness of at least one side wall...The thickness of at least one area of ​​at least one side wall is determined depending on the load transfer into that side wall.

[0026] According to one embodiment of the invention, at least one wall section, preferably at least one side wall of the elevator car, has an opening or penetration, wherein this opening or penetration is expediently closed with a removable panel, in particular with a removable transparent panel. Preferably, the opening or penetration is designed such that, after removal of the panel or transparent panel, maintenance, cleaning, and / or repair work can be carried out from inside the car to the outside. Another embodiment of the invention is characterized in that a viewing opening is formed in the car floor, and this viewing opening can be at least partially closed by the planar load-distributing component of the car floor.

[0027] The invention also relates to a method for manufacturing an elevator car, wherein the elevator car is manufactured from a plurality of wall parts – in particular from wall parts in the form of a car floor, side walls and a car ceiling – wherein at least one wall part – preferably a plurality of wall parts – is manufactured by means of a plastic molding process, in particular by plastic rotational sintering and / or by plastic blow molding. It is within the scope of the invention that an assembly consisting of at least two wall parts, preferably at least three wall parts, more preferably at least four wall parts and in particular at least five wall parts, or of five wall parts as a one-piece or monolithic assembly, is manufactured. It is further within the scope of the invention that the wall parts orThe assembly consists of wall sections made of at least one thermoplastic material, preferably at least one polyolefin, and preferably polyethylene and / or polypropylene. Polyethylene is particularly preferred as a material. Polyamide can also be used as a thermoplastic material for the wall sections or for the assembly itself.

[0028] If, according to a preferred embodiment, a planar load-dissipating element – ​​in particular a load-dissipating plate – is integrated into a side wall of the cabin, and – according to the particularly preferred embodiment described above – an outer surface of the load-dissipating element or the load-dissipating plate is not covered by the plastic of the associated side wall, the plastic components of the cabin, in particular the side wall associated with the load-dissipating element, are preferably manufactured first using a plastic molding process without integrating the load-dissipating element. Reference is made to the preceding descriptions regarding the possible embodiments. Advantageously, a recess for the load-dissipating element or for the load-dissipating plate is formed during the plastic molding process, and the load-dissipating element or the load-dissipating plate is only inserted after the plastic molding process.The plastic rotation process is used to insert the load-bearing element or load-bearing plate into the recess. According to one embodiment, the load-bearing element or plate is shrunk into the recess of the side wall in a form-fitting and / or force-fitting manner during a shrinking process or thermal shrinking process following the plastic molding process.

[0029] As explained above, in a preferred embodiment, the thickness of at least one side wall increases towards the load-bearing element. Using a plastic molding process according to the invention, the wall thickness of at least one side wall can be easily adjusted depending on the load-bearing element by controlling and / or regulating the heat input accordingly. In this respect as well, a plastic molding process according to the invention is particularly advantageous.

[0030] The invention is based on the understanding that the elevator car according to the invention can be manufactured in a simple, inexpensive, and cost-effective manner. Of particular importance is that the wall sections of the elevator car, or preferably all wall sections, are made of thermoplastic material or essentially of thermoplastic material. Nevertheless, effective load and force dissipation is possible, especially in the case of a lightweight elevator car. The elevator car can be moved reliably in an elevator shaft without any disadvantages compared to conventional elevator cars. In addition to the relatively simple and cost-effective manufacturing of the elevator car according to the invention, it should also be emphasized that the components of the elevator car are characterized by excellent recyclability.The elevator cabin according to the invention furthermore represents an assembly that meets all requirements in terms of strength and is characterized by sufficient resistance to mechanical influences.

[0031] The invention will now be explained in more detail with reference to a drawing that illustrates only one embodiment. The drawing shows, in schematic representation: Fig. 1 a perspective view of an elevator cabin according to the invention, Fig. 2 a partial section through the object according to Fig. 1 , Fig. 3 the object according to Fig. 2 In another embodiment, Fig. 4 shows a section in the floor area of ​​the elevator car according to the invention, Fig. 5 shows a side view of a side wall of the elevator car, Fig. 6 shows a perspective view of a load transfer element or a load transfer plate of the elevator car, and Fig. 7 shows a side view of a further preferred embodiment of the invention in section.

[0032] The figures show an elevator cabin 1 according to the invention for transporting persons and goods, wherein in the exemplary embodiment it may be the elevator cabin 1 of a construction site elevator. The elevator cabin 1 according to the invention can be used in particular for elevators of wind turbines or windmills, especially during the construction of the wind turbines or windmills. The elevator cabin 1 preferably has, and in the exemplary embodiment has, a cabin floor 2, three side walls 3, 4, a cabin ceiling 5 and a door opening 6. The door opening 6 allows entry to and loading of the elevator cabin 1. Advantageously, the door opening 6 is closed, preferably with a roller blind (not shown in the exemplary embodiment), in particular a louvered roller blind.

[0033] In the exemplary embodiment, the cabin ceiling 5, the three side walls 3, 4, and a support component 11 of the cabin floor 2 are made of thermoplastic material or essentially of thermoplastic material. The thermoplastic material is preferably, and in the exemplary embodiment, a polyolefin, and particularly preferably polyethylene. Preferably, and in the exemplary embodiment, the assembly consisting of the cabin ceiling 5, the three side walls 3, 4, and the support component 11 of the cabin floor 2 is manufactured as a single-piece or monolithic assembly of thermoplastic material. Manufacturing is preferably carried out by plastic rotational sintering or by plastic blow molding.

[0034] Proven and in the exemplary embodiment according to the Figuren 2 and 3The rear side wall 4 or the cabin ceiling 5 is connected to a conveying and safety device 8 of the cabin 1 via a load transfer element 7 for load transfer. The conveying and safety device 8 serves – particularly in interaction with a rack and pinion guide or the like – to move the elevator cabin in an elevator shaft.

[0035] According to a preferred embodiment and in the exemplary embodiment according to Fig. 2 The load transfer element 7 is integrated into the plastic of the rear side wall 4 and is completely surrounded by it. Preferably, and in the exemplary embodiment, the load transfer element 7 is designed as a flat load transfer element 7 in the form of a load transfer plate. This load transfer plate is integrated flat into the plastic of the rear side wall 4. Advantageously, and in the exemplary embodiment, the load transfer plate is arranged parallel to the rear side wall 4. The load transfer element 7, or the load transfer plate, is preferably made of a metallic material, and in the exemplary embodiment.

[0036] In the exemplary embodiment according to Fig. 2 The conveying and securing device 8 is connected to the rear side wall 4 of the cabin 1. This rear side wall 4 is opposite the door opening 6 of the cabin 1. Preferably, and in the exemplary embodiment, the load transfer element 7, which is designed in the form of a flat load transfer plate, is connected to the conveying and securing device 8 via connecting elements 9. These connecting elements 9 extend through the plastic of the associated rear side wall 4. Preferably, and in the exemplary embodiment, the connecting elements 9 may be linear metallic threaded rods that can engage in a corresponding internal thread of the load transfer element 7 or the load transfer plate.

[0037] According to a further preferred embodiment and in the exemplary embodiment according Fig. 3 The load transfer element 7 is arranged below the cabin ceiling 5 or below the plastic of the cabin ceiling 5. Here too, the load transfer element 7 is preferably designed as a planar load transfer element 7 in the form of a load transfer plate, which expediently rests directly against the underside of the cabin ceiling 5. The load transfer plate is arranged parallel to the cabin ceiling 5. This is also the case in the exemplary embodiment according to Fig. 3 The load transfer element 7 or the load transfer plate is connected to the conveying and safety device 8, which is arranged above the cabin ceiling 5, via connecting elements 9. These connecting elements 9 also penetrate the plastic of the cabin ceiling 5. In the exemplary embodiment according to Fig. 3 The cabin ceiling 5 is held in place by clamping action between the conveying and safety device 8 and the load transfer element 7 or the load transfer plate. The connecting elements 9, which penetrate the plastic of the cabin ceiling 5, are also designed as linear connecting elements 9 and are specifically designed as metallic threaded rods.

[0038] It is within the scope of the invention that the cabin floor 2 forms or comprises the load-bearing surface of the cabin 1 and that the load transfer or force transfer essentially takes place via the - preferably one-piece - cabin 1 made of thermoplastic material to the load-transfer element 7. Fig. 4 Figure 1 shows a particularly preferred embodiment of the cabin floor 2 for the elevator cabin 1 according to the invention. The cabin floor 2 here has a planar load distribution component 10, via which the load is transferred into the cabin 1 made of thermoplastic material. Preferably, and in the exemplary embodiment according to Figure 2, the cabin floor 2 has a planar load distribution component 10, through which the load is transferred into the cabin 1 made of thermoplastic material. Fig. 4 The planar load distribution component 10 rests on a planar support component 11 of the cabin floor 2. Preferably, and in the exemplary embodiment, the planar load distribution component 10 is designed as a planar metallic floor component, while the planar support component 11 is made of thermoplastic material and is preferably, and in the exemplary embodiment, integrally connected to the side walls 3, 4 of the cabin 1. Advantageously, and in the exemplary embodiment, the planar support component 11 has support ribs for reinforcing the cabin floor 2. Preferably, and in the exemplary embodiment, the planar load distribution component 10 engages positively in the ribs of the planar support component 11 by means of positive locking elements 13.

[0039] The Fig. 5 Figure 1 shows another proven embodiment of the invention, namely the preferred configuration of a side wall 3 of the elevator car 1 according to the invention. This side wall 3 preferably has, and in this exemplary embodiment has, reinforcing elements 12 distributed across its side wall surface in the form of reinforcing ribs embedded in the side wall surface. In this way, the strength of the respective side wall 3, or of the entire elevator car 1, can be increased. The reinforcing ribs are, as it were, molded into the thermoplastic material of the side wall 3. - In this exemplary embodiment according to Fig. 5 Furthermore, the side wall 3 has an opening 14 which can be closed with a removable transparent plate 15. After removing this transparent plate 15, maintenance, repair or cleaning work can be carried out from inside cabin 1 to the outside.

[0040] The Fig. 6 Figure 1 shows a particularly preferred embodiment of a load transfer element 7 for the elevator car 1. Advantageously, and in the exemplary embodiment, the load transfer element 7 is designed as a flat load transfer plate made of a metallic material. Preferably, and in the exemplary embodiment, the load transfer element 7 or the load transfer plate has a plurality of positive-locking openings 16 into which threaded inserts 17 are positively engaged. For this purpose, the threaded inserts 17 are preferably, and in the exemplary embodiment, equipped with axial grooves into which axial ribs of the positive-locking openings 16 positively engage. The threaded inserts 17 preferably, and in the exemplary embodiment, each have an internal thread 18 into which, preferably, and in the exemplary embodiment, a connecting element 9 for connection to the conveying and safety device 8 can be screwed.For example, connecting elements 9 in the form of linear threaded rods can be screwed into these internal threads 18 of the threaded inserts 17. The connecting elements 9 are preferably integrated into the plastic of the respective wall section of the elevator car 1.

[0041] The Fig. 7 Figure 1 shows a particularly preferred embodiment of the invention, wherein a section of part of the rear side wall 4 of the elevator car 1 is shown. Here, the load transfer element 7 is again designed as a load transfer plate, which is preferably and in the exemplary embodiment according to Fig. 7 The load transfer plate is only partially integrated into the thermoplastic material of the rear side wall 4. The load transfer plate is positively covered by the plastic of the rear side wall 4 on the inside side I of the cabin. Advantageously, and in the exemplary embodiment, the load transfer plate is free or uncovered from the thermoplastic material of the side wall over its entire surface on the outside side A of the cabin. Preferably, and in the exemplary embodiment according to Fig. 7 The load transfer plate is designed as a cuboid load transfer plate. It is integrated into the plastic of the side wall with all sides of the cuboid – with the exception of the surface facing the outside of the cabin – in a proven form-fitting manner.

[0042] According to a preferred embodiment and in the exemplary embodiment according Fig. 7The conveying and / or securing device is arranged inside cabin 1 or on the interior side of the cabin. Advantageously, and in the exemplary embodiment, the load transfer plate is connected to the conveying and / or securing device arranged on the interior side of the cabin via several connecting elements 12 that penetrate the plastic of the side wall 4.

[0043] Preferably, and in the exemplary embodiment, the connecting elements 9 are designed as linear connecting elements – in particular as connecting screws. Preferably, and in the exemplary embodiment, the connecting elements 9 engage with clearance through sleeves 19 inserted into the plastic of the rear side wall 4. This allows the loads or forces to be transferred essentially via the load-bearing plate.

Claims

1. Elevator cabin (1) for transporting persons and goods, comprising a plurality of wall parts, in particular wall parts in the form of a cabin floor (2), in the form of side walls, preferably at least three side walls (3, 4) and in the form of a cabin ceiling (5) - and comprising at least one door opening (6), wherein at least one wall part - in particular the cabin floor (2), the cabin ceiling (5) and at least one side wall (3, 4), preferably at least two side walls (3, 4) and preferably at least three side walls (3, 4) - are made of at least one thermoplastic material or substantially of at least one thermoplastic material, and wherein at least one wall part - in particular the cabin ceiling (5) and / or at least one side wall (3, 4) and / or the cabin floor (2) - is / are connected to a conveying device or to a conveying and / or arresting device (8) of the cabin (1) via at least one load-distributing element (7) for load transfer.

2. Elevator cabin according to claim 1, wherein the thermoplastic material is at least a polyolefin - in particular polyethylene and / or polypropylene - and / or a polyamide.

3. Elevator cabin according to one of claims 1 or 2, wherein the load transfer is effected via at least one load transfer element (7) arranged on or in the cabin ceiling (5) and / or via at least one load transfer element (7) arranged on or in at least one side wall (3, 4) - preferably on / in the rear side wall (4).

4. Elevator cabin according to one of claims 1 to 3, wherein the load transfer element (7) is integrated into the plastic of at least one side wall (3, 4) - preferably the rear side wall (4) - and is preferably surrounded by the plastic of the at least one side wall (3, 4) - preferably the rear side wall (4) - in particular completely surrounded or substantially completely surrounded.

5. Elevator cabin according to one of claims 1 to 4, wherein the load transfer element (7) is arranged below the cabin ceiling (5), in particular directly below the cabin ceiling (5).

6. Elevator cabin according to one of claims 1 to 5, wherein the at least one load transfer element (7) is a planar load transfer element (7) - in particular a load transfer plate or a load transfer grid -, wherein the load transfer element (7) is preferably planarly connected to the associated cabin ceiling (5) and / or planarly connected to the associated side wall (3, 4) - in particular rear side wall (4) - or planarly integrated into the associated side wall (3, 4) - in particular rear side wall (4).

7. Elevator cabin according to one of claims 1 to 6, wherein a load transfer element (7) is made of, or substantially made of, a material different from the thermoplastic material and in particular is made of, or substantially made of, a metallic material.

8. Elevator cabin according to one of claims 1 to 7, wherein a load transfer element (7) is connected to the conveying device or to the conveying and / or safety device (8) via at least one connecting element (9) - preferably via a plurality of connecting elements (9) and wherein the connecting element (9) or the connecting elements (9) preferably penetrate the plastic of the associated cabin ceiling (5) and / or the plastic of the associated side wall (3, 4) - in particular the rear side wall (4).

9. Elevator cabin according to one of claims 1-8, wherein the planar load transfer element (7) - in particular a load transfer plate - is only partially integrated into a side wall (3, 4) made of thermoplastic material - in particular into a rear side wall (4) made of thermoplastic material - wherein the load transfer element (7) is positively covered by the plastic of the side wall (3, 4) towards the inside of the cabin and is free or uncovered by the plastic of the side wall at least over most of its area - preferably over its entire area - towards the outside of the cabin.

10. Elevator cabin according to claim 9, wherein the conveying device or the conveying and / or safety device (8) is arranged inside the cabin and wherein the planar load transfer element (7) or the load transfer plate is connected to the inside of the cabin conveying device or conveying and / or safety device (8) via at least one connecting element (9) extending through the plastic of the side wall (3, 4), in particular via a plurality of connecting elements (9).

11. Elevator cabin according to one of claims 1 to 10, wherein the cabin floor (2) forms or has a load-bearing surface of the cabin (1) and wherein the load transfer takes place only or substantially via the cabin (1) made of thermoplastic material to the at least one load-transfer element (7).

12. Elevator cabin according to one of claims 1 to 11, wherein the cabin floor (2) has at least one or a planar load distribution component (10) via which the load transfer into the cabin (1) made of thermoplastic material takes place and wherein the planar load distribution component (10) preferably rests on at least one planar support component (11) of the cabin floor (2).

13. Elevator cabin according to one of claims 1 to 12, wherein an assembly consisting of at least the cabin floor (2) or at least one component of the cabin floor (2) and at least one side wall connected thereto, preferably a plurality of side walls connected thereto, is manufactured or substantially manufactured as a one-piece assembly made of thermoplastic material.

14. Elevator cabin according to one of claims 1 to 13, wherein an assembly consisting of the cabin floor (2) or at least one component of the cabin floor (2) and at least one side wall (3, 4) connected thereto - in particular a plurality of side walls (3, 4) connected thereto - and the cabin ceiling (5) is manufactured or substantially manufactured as a one-piece assembly from thermoplastic material.

15. Elevator cabin according to one of claims 1 to 14, wherein at least one side wall (3, 4) has reinforcing elements (12) distributed over its side wall surface, in particular reinforcing elements (12) in the form of reinforcing ribs and / or reinforcing beads.

16. Elevator cabin according to one of claims 1 to 15, wherein the door opening (6) of the cabin (1) can be closed by a cabin door and wherein fixing elements and / or stop elements for the cabin door are provided on and / or in at least one side wall (3) and / or the cabin ceiling (5) and / or the cabin floor (2).

17. Elevator cabin according to one of claims 1 to 16, wherein the wall thickness of at least one side wall (3, 4) increases or decreases depending on the load transfer.

18. Method for manufacturing an elevator car - in particular according to one of claims 1 to 17 -, wherein the elevator car is manufactured from a plurality of wall parts, in particular from wall parts in the form of a car floor (2), side walls (3, 4) and a car ceiling (5), wherein at least one wall part, preferably a plurality of wall parts, is manufactured by means of a plastic molding process - in particular by plastic rotational sintering and / or by plastic blow molding.

19. Method according to claim 18, wherein an assembly is manufactured in one piece or monolithically from at least two wall parts, preferably from at least three wall parts, preferably from at least four wall parts and in particular from at least five wall parts or from five wall parts.

20. Method according to one of claims 18 or 19, wherein the wall parts or the assembly is / are made of at least one thermoplastic material, preferably of at least one polyolefin and preferably of polyethylene and / or polypropylene.

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