JP5042635B2 - Elevator car door - Google Patents

Description

  The present invention relates to an elevator door, which is folded on a vertical axis during its opening or closing operation, as defined in the preamble of claim 1.

  Elevator doors that fold around a vertical axis are known from the state of the art.

  The present invention is another option for elevator car doors that can be folded around an axis with a built-in drive motor, which enables the realization of elevator car doors with a very simple structure of small overall dimensions. This is possible because the entire drive mechanism is actually located inside the door itself, and the door itself is ready to be incorporated into the final landing door, Pre-assembled that is ideal to be combined with landing doors (actuated (opened and closed) by pulling on the cage doors in any way according to safety regulations in force in the industry) This is because it can be supplied as a (pre-assembled) unit. In order to make the door drive failsafe during a power outage so that passengers do not fall into the elevator hoistway, it is necessary to keep the door closed.

  These objects can be achieved with an elevator car door that folds around a vertical axis with the features as defined in the characterizing part of claim 1.

  The main features of the proposed solution according to the invention are as follows: a motorized shaft for handling the door and a spring incorporated in one and / or the other vertical shaft around which the door is folded or wrapped The energy storage device is used.

  According to these features, the vertical axis around which the door folds or wraps is an energy storage device (preferred embodiment) that applies a sufficiently high torque to the axis to hold the door in a fully open position. In the spring, the door itself always receives, tries to close the door, overcomes the opposing force received even in the most open position, but the opposing force is on the other side of the door The door is exerted on the door by upper traction means and lower traction means that wrap around a second motorized vertical shaft assembled into the part. This motorized shaft (folded around the door), manufactured as a shaft with an electric motor with an external rotor and internal stator according to a preferred embodiment, is capable of overcoming the maximum torque applied to that shaft. A force is applied to the traction means and the door is closed in this way. When opening the door, the motor releases the force applied to the shaft, which is powered by the force storage device. A torque lower than the minimum torque applied to the vertical axis around which the door folds or wraps when the door is fully opened is applied to the vertical axis about which the traction means wraps during the door opening operation. Thus, the basic idea of the present invention is that the shaft around which the door folds (or wraps) has been fabricated as a coil spring, preferably a cylindrical or helical, with the torque to keep the door in the open position. The energy storage device always receives from the other side of the door, which is one of the door plates, and the door is always pulled by a balanced force (upper and lower traction means).

  The invention is realized with its structural advantages which are obtained only when the car door as claimed in claim 7 is assumed to be combined with a landing door. The connection of the car door to the landing door is now required for safety reasons, since it is assumed that the door of the landing door can only be opened by pulling the car door. You must keep in mind. This is to prevent the possibility that the entrance door will unintentionally open without a car.

  Accordingly, in one of its particularly interesting embodiments, the present invention provides that the landing door is also a door that folds or wraps around a vertical axis during its closing and opening operations, and that door is envisaged by safety regulations. It is assumed that the traction force to always close the door will be received. Such traction forces must be overcome by the traction forces exerted by the car doors on the landing doors in opposite directions during the door opening operation. The structure of the doorway at the entrance follows that of the car door, and the difference between the two is peculiar. There is no vertical axis.

Another object of the present invention is to reorganize all the required requirements for innovative and efficient doors, a door for an elevator, ie a small overall dimension transverse to the elevator car, and thus a vertical axis. A flexible door that can be rolled up
Flame retardant to satisfy strict provisions on anti-fire protection currently in force,
In its central part, it has sufficient mechanical resistance when the stress due to the defined horizontal force is applied and does not exceed the maximum allowable elastic deformation ("warp"),
A favorable appearance and thus satisfy the aesthetic requirements set by the trend of modern architecture,
Is to provide a door.

  The object described above can be achieved by an elevator door that folds around a vertical axis that conforms to the features of the dependent claims. Their purpose is to achieve a flame retardant door that is airtight or flame retardant for the minimum time (various and in practice varies by country) as determined by law and regulations. Including basic means for. Such means are rigid around any virtual horizontal axis and can be folded around any vertical axis to allow the door to be rolled around the vertical axis, Its minimum bending radius (r) is less than one tenth of the door thickness (d).

  In some countries, there is a rule for the rigidity of a door around any horizontal axis, according to which the maximum allowable deformation of the door (its “warping” when stressed with a force of 30 kg as described above. ")" Is 15 millimeters. Such stiffness can be affected in a variety of ways using various preferred solutions as described below, all of which are available to those skilled in the art, The most appropriate technical solution associated with a particular condition can be selected.

  Other features of the present invention are better explained by some preferred embodiments using the accompanying figures.

  Before describing the present invention in more detail with the help of some embodiments, it is important to emphasize two points as a general principle.

  The first point is that for safety reasons, the car door must always be connected to the landing door at the stop, and in fact it can only be opened by pulling on the car door Although it is known to constitute a mechanically coupled drive element for a landing door that can be used, it relates to the fact that the present invention basically refers only to the structure of a car door.

  The advantage provided by the present invention regarding the possibility of adapting a car door as a pre-assembled unit to be applied to the car is essentially the possibility of rolling the door around an axis and the axis itself. Due to the power drive of the door by an integrated second motor shaft, it is generally applicable to any known type of landing door, for example a door with a rigid shutter. If the landing door is made in the same way as a car door (that is, it folds around its axis), the features of the present invention are also applied to the landing door, which is greatly simplified and reduced. It is true that another advantage can be obtained by applying the present invention because it is possible to realize an elevator overall structure with overall dimensions. This possibility envisaged in claim 7 is certainly a preferred embodiment of the invention, but in any case does not constitute the only possible solution.

  The second point relates to the forces encountered in the field. The present invention provides two energy storage devices (usually 2) which operate at least oppositely in a simple application as a car door and in its combined version as a car door combined with a landing door (according to claim 7). Two springs). In the preferred solution of claim 7, there are as many as four energy storage devices, which clearly define strict legal provisions regarding the minimum and maximum forces required to operate the door, especially in case of failure or otherwise. To be satisfied, it must be chosen properly. Thus, a single spring that is taken into account as an energy storage device (or a single counterweight if the torque required to operate one or more doors is achieved by weighting or braking as described below. It is necessary to investigate specifically the elastic characteristics of each of the brakes.

  These forces depend on many factors that must be considered in addition to the aforementioned regulations, such as door dimensions and weight, friction and others. It is not the work of this description or possible to provide a torque value that should act on the different vertical axes that make up the drive element of a single or two doors. These forces are actually calculated each time taking into account the specific conditions of application of the present invention, which is possible for the person skilled in the art. Such a calculation determines the characteristics of the spring to be used and allows its most appropriate dimensions in relation to its needs, either a cylindrical coil type or a spiral coil type or some other type.

  Given these assumptions, we can proceed to a more detailed description of some embodiments of the present invention.

  1 and 2, which are cross sections based on a horizontal plane, show the key elements of the car door of the present invention, FIG. 1 showing an open door and FIG. 2 showing a closed door. A door frame, which is better illustrated in FIGS. 4 a and 4 b and made of a rectangular frame surrounding the entire door, is systematically indicated by the number 1. The door is guided by guides 3, 2 (see FIGS. 4a, 4b) along the upper and lower parts. The door itself is of the type that folds around a vertical axis 4 (see FIGS. 1, 2 and 3). In order to realize the present invention, it is sufficient that the doors be folded and wound around the vertical axis, respectively, and an absolute fireproof seal is not required. I want to make it clear here that the doors made can be taken into account.

  The vertical axis 4 receives the action of the first energy storage device 5, symbolically shown in FIGS. 1 and 2 with the dots of the axis itself, in the manner of the present invention. The energy store 5 applies a sufficiently high torque to the shaft 4 to keep the door fully open and overcomes the opposing forces that attempt to close the door. Because it is important that the door is always energized under any circumstances (open, semi-open or closed), its opposing force is required.

  According to a preferred embodiment of the present invention, the energy storage device 5 acting on the shaft 4 is a cylindrical coil spring or a helical coil spring, which can preferably be incorporated in the same shaft, the shaft being such It must be hollow in the situation. A similar structure with a hollow shaft with a cylindrical coil spring is shown in FIG. 5 by way of example only. In any case, it is a structural element known to those skilled in the art.

  According to a further basic feature of the present invention, it is assumed that the opposing forces (which keep pulling the elevator car door constantly) are applied to the door itself by the upper traction means 6 and the lower traction means 7. Has been. The traction means 6 and 7 wrap around the second motorized shaft 8. A torque applied by the second energy storage device 10, for example, a coil spring, acts on the shaft 8. An electric motor 18 is disposed in the shaft 8. Thus, the vertical shaft 8 located on the opposite side of the car door with respect to the vertical shaft 4 is connected to an electric motor 18, which is folded into the shaft 4 around which the door folds and thus closes the door. It is in a position to apply a force that can overcome the maximum torque applied to the traction means 6, 7. The moment exerted on the shaft 4 by the energy storage device 5 is actually maximized when the door is completely closed, for example because the springs that make up the energy storage device 5 will be pulled to the maximum. If the energy storage device 5 has the form of a counterweight, the torque applied to the shaft 4 by the energy storage device should always be constant. The motor acting on the vertical shaft 8 thus serves only to open or close the door, when the car door is connected to the landing door and opens it by pulling (FIGS. 6, 7, 8 and dependent claims). Even if it is expressed in the terms 7 and 8, the function remains unchanged.

  When the car door is fully closed, the car door is mechanically blocked by a suitable blocking mechanism 9 such as a lock, which is symbolically shown in FIG. The drive motor can then be deactivated and the door is closed and pulled under the action of an energy storage device acting on the shaft 4.

  In order for the described force to work properly, the third condition constituting the third basic feature of the invention must then be realized.

  This is because less than the minimum value applied to the vertical axis 4 around which the door folds when the door is fully opened, the drive means 6 and 7 around it by the respective energy storage device during the door opening operation. Is assumed to be added on the vertical axis 8 around which it wraps. Only in this way the door remains in the fully open position despite the tensioning action applied at all positions of the door by the traction means 6,7. It should be noted that when a counterweight is used instead of a spring as an energy storage device, the moment remains essentially constant, that is, the minimum and maximum moments have the same entity. In any case, this does not change the basic concept according to the present invention.

  According to a further preferred embodiment, an alternative form of the invention is that a drive electric motor 18 of the second vertical shaft 8 around which the traction means 6, 7 are wound is incorporated in the vertical shaft 8 itself, and its second It is assumed that the vertical axis is a hollow shaft under these circumstances, and is made of an internal stator and an external rotor.

  The advantages of this solution are clear, which is inherent in the built-in motor features that allow a small, fully pre-assembled door.

  To apply torque to the vertical shaft 8 around which the traction means 6, 7 wrap around during the closing operation, a cylindrical or helical coil spring acting directly on the shaft 8 (reference number 10 is shown in FIG. 5 as an example). Has already been mentioned that the torque can be advantageously generated.

  This solution is mechanically sophisticated, allowing full integration of the energy storage device into the shaft 8 and guaranteeing considerable uniformity to other energy storage device solutions envisioned for the other shafts. (This is better represented in the description of the most general application of the invention, represented in FIGS. 6 and 7 and the object of claim 7).

  However, this embodiment is not the only one desired. While the door is open, the real function of the energy storage device acting on the vertical shaft 8 which entrains the traction means 6, 7 is only to brake the door so that the door itself is always tensioned. You must be careful. This effect of braking the door is thus achieved according to a further preferred embodiment of the invention, either directly on the shaft 8 or through the mechanical brake or the electric brake (not shown) acting on the shaft 8 or on the shaft 8, ie the elevator. It can be generated by the action of a car door drive motor. The person skilled in the art knows how to create a similar mechanically or electrically driven brake and therefore does not have to spend more time and go into more detail.

  A single vertical interconnected door as a hinge in FIG. 5, showing the structural details of the key elements of the door in an enlarged view (with the proportions intentionally modified to make the view clearer) It can also be made of a board.

  Sometimes the feature requires the fact that the door must be "fireproof", i.e. the door must have hermetic properties, i.e. the door is actually a hole, passageway, tear or other Must be made of a unique continuous surface with no flame retardant and made of flame retardant material (metal or flame retardant plastic etc) to meet the relative standards existing in all countries It is the fact that it should. These criteria vary from country to country, but they are known to those skilled in the art, so the person skilled in the art knows what refractory doors mean (the concept of door resistance time against fire and smoke attacks). In addition, we are in a position to select the most appropriate materials for building a fire door that can also be folded on a vertical axis, including the combination of each material.

  The present invention also focuses on the mechanical properties that a similar door must have in order to be used as an elevator door, thereby realizing the above advantages that a similar door provides to the elevator field. Let

  Therefore, if the door is closed and stressed with the horizontal force required from the center in the center, the door will satisfy the laws and regulations regarding the maximum deformability against the allowable bending (the laws and regulations have already been mentioned). ) It is assumed to be sufficiently rigid around any horizontal axis. The door must therefore be rigid with respect to its vertical surface in order not to exceed the maximum allowable “warp”. This legislation is designed to avoid over-bending the door and impairing the functionality of the elevator if the car is overfilled or a person leans heavily on the inside door. In addition, the door is sufficiently around any vertical axis so that it can be folded with a bending radius r (see FIG. 2) that is 10 times smaller than the thickness of the door shown in d in FIGS. 3b to 3g. It is assumed that it must be folded. It should be noted that the overall thickness of the door, i.e. the maximum measured thickness of the ribs or reinforcement elements added as a result, is indicated by d. This second definition will therefore give an accurate indication of the radius of the rotating shaft 4 and the door deformation.

  The feature of the elevator door of the present invention is therefore maximum folding to any vertical axis and maximum resistance to bending on all horizontal axes, where this last feature is associated with legal provisions. However, the first is freely selected by the inventor and relates to the structural conditions that must be guaranteed in order to be able to benefit from the benefits envisaged by the present invention.

  According to a first embodiment represented in FIGS. 3c and 3d, the continuous surface of the door is made of a unique foil of flame-retardant material and is reinforced by a vertical bar on at least one side (e.g. In FIGS. 3c and 3d, only the upper side of the figure is reinforced), it is assumed that the vertical bars are arranged at a certain interphase distance from each other and are completely fixed to the foil 39 along their entire length. Yes. When referring to “vertical bars” here, it is clearly stated that the corresponding doors mean that these bars 310 are in this position when placed in an elevator in a certain operating position. I have to leave.

  Obviously, if a foil of flame retardant material (single or multiple made for example as a sandwich of layers of multiple materials) has sufficient bending resistance on its own, it will claim If the door has the necessary bending properties that meet the requirements of clause, the door must not be equipped with any vertical bars or other reinforcement elements (eg as shown in FIG. 3b) Means good. However, balancing stiffness with respect to the horizontal axis and folding around the vertical axis is not easy without providing some reinforcing means as envisaged in the solutions of FIGS.

  According to an alternative solution of FIG. 3c, the bar 310 is assumed to have a circular cross-sectional shape. This shape is ideal when the door is actually wrapped around all surface dimensions or folded at a deflection point (bar 310 has a rectangular cross-section as an example and is firmly fixed along one side of the flame retardant foil) This should not happen if it is done).

  Another embodiment of the invention is represented in FIGS. 3g and 3f, in which the continuous surface is made of a unique foil 39 ′ or 39 ″ based on that embodiment and the foil is pressed by a die (FIG. In the case of 31 ribs 311) or with a regular interphase distance provided by vertical ribs 311 obtained by local deformation of the foil 39 ″ (in the case of ribs 311 in FIG.

  According to another embodiment of the invention, the fire-resistant continuous surface, i.e. the foil of the flame retardant material, is a metal sheet, preferably between 0.2 mm and 1 mm thick, preferably from 0.3 mm. It is assumed that it is made of stainless steel. This particular embodiment is particularly suitable for implementing the solution shown in FIGS. 3d and 3f. The advantages associated with the use of metal sheets, particularly stainless steel sheet foils, are more than obvious (flame retardant, elastic modulus, etc.). Such solutions in any case require the use of appropriate vertical reinforcement as described above.

  According to a preferred embodiment, represented schematically in FIG. 3b, the fireproof continuous surface is a foil of a flame retardant plastic material 39 consisting of a thickness between 2 and 10 millimeters, preferably 3 millimeters. It is assumed that it is made. Many types of flame retardant plastic material foils are sold today under different names and brands, but the problem is that the doors were assembled into elevators as required by the present invention. When its bending resistance must be high around the horizontal axis. To alleviate this possible disadvantage of flame retardant plastic materials, another embodiment of the present invention, represented in FIG. 3e, is the same, with a high modulus of elasticity, and is uniformly spaced from each other. It is envisaged that the reinforcing bars that are placed on the roof will be reinforced by embedding them in their mass, and that they will assume a vertical position after assembling the door into the elevator car.

  Another embodiment having the advantage of allowing the maximum overall lateral dimension of the elevator car to be assumed assumes that the bend radius r is comprised between 3 centimeters and 20 centimeters. .

  The foldable elevator door can be conveniently manufactured as a rolling up door or a winding door around a vertical axis 4 (FIGS. 1 and 2) arranged on the side where the door opens, Also, as shown by the landing entrance door 11 in FIG. 6, the door is folded 90 ° from its opening side and is guided by upper and lower guides 2 and 3 that are in a straight line after such bending. It is also convenient. In this second case, the handling of the external door is preferably carried out by pulling by the corresponding car door, but in the case of a roll-up door, the door can be handled individually by activating the corresponding roll shaft 4 or 12. preferable. These motorization problems are well known to those skilled in the art and are today mainly solved by chain drives or gearing.

  Then another preferred embodiment is that the fire retardant continuous surfaces, each of which is a foil of a flame retardant material, are woven into the outside face of the door as described in the earlier patent application JP 2000 130051 to improve the aesthetic appearance. It is assumed that

  Another preferred embodiment then envisages that the fireproof continuous surfaces, each of which is a foil 39 of flame retardant material, are provided with a soundproof material layer. The significance of this variant is obvious: to reduce the noise caused by or due to possible vibrations that occur from the opening and closing of the doors and that may appear during the elevator lift. This solution has to be seen constructively within the already mentioned selection of multilayer foils of flame retardant material and is therefore considered in this context.

  In addition to the reduction of these overall dimensions and the achievement of the fire protection regulations already mentioned, the advantage is the door structure which is obtained thanks to the possibility of moving the door directly through manipulating the roll or winding shaft. It also relates to the appropriate simplicity and quietness.

  Finally, it must be remembered that the type of folding door for the elevator is suitable for all types of architecture, both conventional and innovative.

  According to another preferred embodiment of the present invention as described hereinbefore and represented in FIGS. 6 and 7, the car door is coupled with the landing door in accordance with legislation in that the elevator stops. Can do. In FIG. 6, the same elements of FIGS. 1-5 are indicated by the same reference numerals and will not be described in detail.

  The door 11 at the entrance of the landing is a door that is also folded or wound around the vertical axis 12 during the opening / closing operation. In addition (as expected by certain laws and regulations) the landing door 11 is mechanically pulled into the car door while it opens. The car door is equipped with a pulling element 13, which has the shape of a lock that pulls a counter hook 14 that is fixed to the tip of the door 11 at the landing entrance.

  Furthermore, the door 11 at the landing entrance shows a vertical axis 12 around which the door folds or wraps, on the same side as the car door has a vertical axis 4 around which the door folds or wraps ( Although the wrapping shaft is always shown in the figure, the present invention can be more or less properly applied if the shafts 4 and 12 are “just” that folds 90 ° of the door.

  In order to use the present invention for a car door coupled to a landing door, it is clearly necessary and indispensable to satisfy several general conditions. In other words, the door 11 at the entrance of the landing must always receive a pulling force to close the door, and the pulling force is applied to the door in the opposite direction by the pull of the cage door during the opening operation. It must be overcome by the power to do. The landing door 11 thus receives the pulling force exerted from two traction means, the upper means 15 and the lower means 16, both traction means being then torqued by the energy storage device. Wraps around the second vertical axis 17 of the door 11 (the energy storage device is not shown but is structurally identical to that acting on the car door axis 8 though not in shape).

  According to one preferred embodiment for the implementation of the present invention, the energy storage device for applying torque to the vertical shaft 17 around which the traction means 15, 16 of the landing door 11 wind is wound around the other shafts 4, 8 as well. , 12, as in the case of the energy storage device for FIG. 6, is assumed to be manufactured as a cylindrical or helical coil spring. Since the vertical shaft 17 is not motorized, no brake can be envisaged here as an alternative to the spring, but a counterweight may be possible for the generation of torque.

  FIG. 7 shows an overall view with the elevator car open, showing the overall structure without a vertical guide and the necessary support elements.

  As already mentioned herein, the characteristics of the different energy storage devices that can be taken into account (especially in landing doors and combinations thereof) to realize elevator car doors are Or it must be chosen to meet the legal requirements for minimum and maximum force to open the door from the outside. These can be easily calculated by those skilled in the art and can be easily realized in practice by adopting the types of energy storage devices available and adapting to each case.

1 is a schematic representation of a car door according to the present invention in a cross section along a horizontal plane with its door open in order to show the important elements that make it up. FIG. 2 is a schematic view similar to FIG. 1 but showing the door in a closed state. Figure 2 is a schematic perspective view of important elements of the door of the present invention. Fig. 2 represents various inventive embodiments of elevator doors with different structural types in cross-section and purely in schematic form. Fig. 2 represents various inventive embodiments of elevator doors with different structural types in cross-section and purely in schematic form. Fig. 2 represents various inventive embodiments of elevator doors with different structural types in cross-section and purely in schematic form. Fig. 2 represents various inventive embodiments of elevator doors with different structural types in cross-section and purely in schematic form. Fig. 2 represents various inventive embodiments of elevator doors with different structural types in cross-section and purely in schematic form. Fig. 2 represents various inventive embodiments of elevator doors with different structural types in cross-section and purely in schematic form. It is a figure which shows the door by this invention in the closed state shown in the frame (frame) as an installation unit. It is a figure which shows the door by this invention in the open door state shown in the frame as a mounting unit. It is an enlarged view which shows the structural details of the important element of a door. FIG. 6 is a view similar to FIG. 5, but also illustrating a landing entrance door in a position that is open halfway coupled to a car door. It is a general view of the elevator which has stopped on a certain floor in the state which opened the door.

Claims (10)

An elevator car door that can be folded around a vertical axis (4) during opening or closing operation,
The vertical axis (4) around which the door folds receives a sufficiently high torque to hold the door in the open position, and torque is applied by the first energy storage device (5) to try to close the door. Overcome the opposing forces,
The door comprises an upper traction means (6) and a lower traction means (7) which are wound around a second vertical axis (8) on which the second energy storage device (10) acts, the second energy storage. The device always tries to pull the traction means to close the door and
Acting motor (18) in the axial (8), whereby the second energy storage device (10) is pressurized to give a stronger force than the first energy storage device (5), opening the motor is subjected to axial forces and, whereby the second energy storage device and said Rukoto added weaker force than the first energy storage device,
Elevator car door.   2. The elevator car according to claim 1, characterized in that the energy storage device (5, 10) for applying torque to the vertical axis (4, 8) is formed by a cylindrical or helical coil spring. door.   3. Elevator car door according to claim 2, characterized in that the spring is incorporated in a hollow vertical shaft. Drive motor (18) is arranged in the shaft (8), characterized in that it has an internal stator and an external rotor, door of the car of an elevator according to one of claims 1 to 3. An elevator car door that can be folded around a vertical axis,
The car door is combined with the landing door in accordance with the safety regulations in force in the industry in that the elevator stops,
The door (11) at the entrance of the landing is also a door that folds and wraps around the vertical axis (12) during the closing or opening operation,
The landing door (11) is mechanically pulled by the car door during opening,
The landing door (11) has a vertical axis (12) around which the door can be folded, and the car door has a vertical axis (4) around which the car door can be folded. And
The elevator car door according to one of claims 1 to 4. An elevator car door that can be folded around a vertical axis,
The landing door (11) always tries to close the door and receives a pulling force that must be overcome by the pulling force exerted on the door in the opposite direction by the pull of the car door during the opening operation,
And / or the force that the landing entrance door (11) is constantly subjected to is exerted by the upper traction means (15) and the lower traction means (16), which is then torqued by the energy storage device. Wrapping around the second vertical axis (17) of the landing door (11)
The elevator car door according to claim 5. A door that folds around a vertical axis (4) during opening or closing operation includes a fireproof continuous surface made of flame retardant material;
And / or the door is guided by horizontal guides (2, 3) that determine the movement trajectory of the door along the upper part and the lower part at least over the entire length of the door;
And / or in the center in the closed state, when sufficiently stressed with the required horizontal force, sufficiently rigid around any horizontal axis to satisfy the regulations on maximum deformability for permissible bending , D is the thickness of the door, so that it can be folded at a bending radius r lower than 10d, so that it can be sufficiently folded around any vertical axis.
The elevator car door according to one of claims 1 to 6.   The continuous surface is made of a single foil (39) of flame retardant material reinforced by vertical bars (310) arranged at a distance from each other on at least one side, the bars being of the bar 8. Elevator car door according to claim 7, characterized in that it is firmly fixed to the foil (39) over its entire length.   The continuous surface is made of a single foil (39 ′, 39 ″) with vertical ribs (311) obtained by press forming of the foil using a die or local deformation of the foil at regular interphase distances. The elevator car door according to claim 7 or 8, characterized in that.   An elevator comprising the car door according to any one of claims 1 to 9.

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