EP2378025B1 - Faltbare Wendeltreppe - Google Patents

Faltbare Wendeltreppe Download PDF

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Publication number
EP2378025B1
EP2378025B1 EP11162459.9A EP11162459A EP2378025B1 EP 2378025 B1 EP2378025 B1 EP 2378025B1 EP 11162459 A EP11162459 A EP 11162459A EP 2378025 B1 EP2378025 B1 EP 2378025B1
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EP
European Patent Office
Prior art keywords
steps
staircase
mast
spiral
central
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP11162459.9A
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English (en)
French (fr)
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EP2378025A1 (de
Inventor
Pascal Oger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chridami Medias
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Chridami Medias
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Publication date
Priority claimed from FR1052874A external-priority patent/FR2958954A1/fr
Application filed by Chridami Medias filed Critical Chridami Medias
Publication of EP2378025A1 publication Critical patent/EP2378025A1/de
Application granted granted Critical
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F11/00—Stairways, ramps, or like structures; Balustrades; Handrails
    • E04F11/02—Stairways; Layouts thereof
    • E04F11/022—Stairways; Layouts thereof characterised by the supporting structure
    • E04F11/032—Spiral stairways supported by a central column
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F11/00—Stairways, ramps, or like structures; Balustrades; Handrails
    • E04F11/02—Stairways; Layouts thereof
    • E04F11/04—Movable stairways, e.g. of loft ladders which may or may not be concealable or extensible
    • E04F11/06—Movable stairways, e.g. of loft ladders which may or may not be concealable or extensible collapsible, e.g. folding, telescopic

Definitions

  • the invention relates to helical stairs.
  • the invention applies to helical staircases comprising a central mast intended to be arranged vertically and adapted to support steps each extending in a substantially horizontal plane.
  • spiral staircases are conventionally laid between two floors located at different levels of a dwelling, for example between the ground floor and the cellar.
  • a hopper is arranged in the floor of the ground floor.
  • a disadvantage of such a staircase is that it does not allow the passage of bulky objects, in particular because it is helical, and in particular when the hopper has a small section.
  • the document FR 2 921 398 concerns a temporary spiral staircase consisting of several superimposed modules. The lower module is provided with a base which can be provided with wheels.
  • the document FR 1 231 558 relates to a retractable staircase comprising a central column on which are freely stacked steps and means for immobilizing the steps relative to each other.
  • the invention particularly aims to overcome these disadvantages of the prior art.
  • an object of the invention is to provide a helical staircase which allows the passage of bulky objects and which does not restrict the passage available to the user.
  • Another object of the invention is to provide a helical staircase which is simple to install and which is particularly suitable for hoppers of small section.
  • the invention also aims, according to at least one embodiment, to provide a staircase whose dimensions are adaptable according to the available volume, including the dimensions of the hopper, the height between floors and the access faces of the staircase.
  • the invention also aims, in at least one embodiment, to provide a helical staircase which provides a level of security satisfactory to users, which can be customized and offers the aesthetics of a traditional staircase.
  • the mast of the staircase is movable, while remaining vertical, said at least two steps comprising connecting means by pivot to a wall.
  • the mast can move in a horizontal plane (more precisely, the base of the mast moves along the floor) and is therefore movable between two positions.
  • the mast can be moved against a wall in a retracted position and the steps can be aligned vertically, so that the assembly formed by the mast and therefore the steps is effectively retracted.
  • the mast (and steps) can take two positions, respectively corresponding to a helical staircase and a vertical ladder.
  • the lower end of the mast comprises rolling means on the ground.
  • At least part of said steps is equipped with a locking device.
  • the upper end of said mast is intended to cooperate, in the first position, with means for maintaining the mast.
  • said steps comprise a ring intended to be threaded onto said central mast.
  • a ring may be provided on its upper face and / or lower a lug (or stop) for locking in rotation of said step.
  • said steps comprise at least one gripping zone.
  • the aligned steps can be used as a ladder.
  • the staircase of the invention comprises a mast or central shaft 2 constituted by a hollow tubular column comprising overthicknesses 2 'at regular intervals along the mast, shown in FIG. figure 4 .
  • the mast 2 is, in this example, made of metal.
  • the central mast 2 is intended to be arranged vertically between two floors 4, 6 and is adapted to support a set of steps 100 to 119 each extending in a substantially horizontal plane.
  • the staircase 10 is in the deployed position and on the figure 2 , the staircase 10 is in the retracted position against the wall 14.
  • Each step 100, ..., 119 comprises a tread substantially having, in this example, a substantially triangular shape as illustrated.
  • Figures 10A to 10C and figures 11 especially. More specifically, each step 100,..., 119 comprises a load-bearing frame or step support 30 arranged to receive a step top 31 ( figure 7 ).
  • the steps 100 to 119 are, in this embodiment, used for a staircase with left propeller, but they can obviously be used for a staircase with propeller on the right.
  • Each step 100, ..., 119 is fixed to the central mast 2 by means of a spacer sleeve or ring 3.
  • This spacer sleeve 3 allows the removable mounting of the step support on the central mast 2, by simply threading on this last.
  • the spacer sleeve 3 preferably has a cylindrical shape and an internal diameter allowing it to slide without play on the central mast 2. Its standardized height corresponds to the standardized height of each step 100, ..., 119.
  • steps 103 and 114 represented on Figures 10A and 10B ) which are secured to the central mast 2
  • steps 100 to 102, 104 to 113 and 115 to 119 are rotatably mounted on the central mast 2, in their substantially horizontal plane.
  • the Figure 1B is a view of the frame of the staircase of the invention showing the steps 103 and 114 which are immobilized on the central mast 2 by means of a pinning, an expandable sleeve (not shown) or by any other means appropriate.
  • the steps 103 and 114 are each connected to the masonry 14 by a pivot 201, 201 'respectively. More specifically, each step frame 103, 114 comprises a hollow cylinder 202, 202 'respectively intended to cooperate in rotation with the pivot 201, 201' respectively.
  • the figure 7 is a detailed view of the step 103, substantially triangular shape, which is connected to the mast 2 through a spacer sleeve 3 located at the top of the triangle.
  • the step 103 further comprises, at one end of the base of the triangle, a hollow cylinder 202 of vertical axis parallel to the central mast 2 which is therefore intended to cooperate with the pivot 201.
  • the central mast 2 of the staircase is connected to the wall 14 in rotation through these two steps 103 and 114, called upper pivot step 103 and lower pivot step 114, and pivots 201, 201 '.
  • the central mast 2 is movable between the deployed and retracted positions of the staircase illustrated on the Figures 1A and 2 respectively.
  • the central mast 2 is disposed in the center of the hopper 12 and the steps are arranged around the central mast 2 (extended position).
  • the figure 6 is a detail view of the staircase of the invention showing the lower end of the central mast 2 which is provided with a roller 18 of load recovery.
  • This roller 18 allows the central mast 2 to be rolled on the floor 6 of the lower floor so as to deploy or retract the stairs.
  • a support 16 and an axis 17 allow the roller 18 to be mounted at the lower end of the central mast 2 as illustrated in the view of FIG. figure 6 .
  • HDPE high density polyethylene pad
  • the staircase of the invention is particularly suitable for small section hoppers (referenced 12) and allows optimization of the space used when it is deployed.
  • Such a staircase is particularly suitable for developing a sub-plex or a floor.
  • Such a staircase makes it possible not to restrict, or to restrict only very slightly (compared to conventional stairs) the passage available to the user and uses a minimum space in the folded position. It ensures an adequate level of security for users and offers the aesthetics of a traditional staircase.
  • the figure 8 is a detail view of the staircase of the invention showing the conical centering and locking device 29 of the mast 2 on the upper platform 28 which allows the mast 2 to be held when the staircase is deployed ( Figure 1A ), thus improving the overall stability (and therefore safety).
  • the Figure 5A shows a circular piece 26 mounted at the upper end of the mast 2 on which the plate 28 is pressed when it is folded down, the piece 26 and the platform 28 comprising a central orifice 26 'and 28' ( figure 14A ) respectively in which is housed the lower tip-shaped upper railing 8 of the staircase.
  • the platform 28 illustrated on the figure 14A is pivotally connected to the upper floor 4 through the connecting piece 27 shown in FIG. figure 15 .
  • This connecting piece 27 is fixed to the upper floor 4 by screws and comprises two hinges 20, 21 intended to cooperate with hinges 22, 23 of the platform 28 (the Figure 14B which is a detail view of the figure 14A shows such hinge 22).
  • folding the platform 28 by pivoting makes it possible to lock the mast 2 and to stiffen the stairway when it is deployed.
  • the figure 3A is a top view of the hopper 12 and the staircase 10 of the invention when it is in operation, the steps being arranged around the mast 2 and the platform 28 being folded in a plane substantially parallel to the horizontal planes of the steps .
  • the figure 3B is a top view of the hopper 12 and the staircase 10 of the invention when it is retracted, the steps being arranged one above the other and the mast 2 being disposed against the wall 14, thus releasing the
  • the platform 28 is raised in a plane perpendicular to the planes of the steps, thus clearing the hopper 12.
  • the staircase of the invention has a helical ramp to ensure the safety of the users, this ramp consisting of a plurality of removable guardrails 5 in which passes a wire rope 7, for example.
  • the figure 13 represents the upper railing 8 of the staircase of the invention that can be distinguished on the Figures 1A and 1B .
  • This upper railing 8 is, as previously mentioned, mounted removably on the platform 28, and can be removed when the staircase 10 is retracted ( figure 2 ).
  • FIGs 9A and 9B are respectively views of a guard foot 9 securable to a walk by screwing and a removable guard 5. It is understood that the stem of the guardrail foot 9 ( Figure 9A ) is designed to be housed in the hollow lower end of the guardrail 5 ( Figure 9B ) and that the cable 7 passes into the ring 11 located at the upper end of the railing 5.
  • the figure 6 shows the locking device of the staircase in the form of a locking pin 15 located under each of the movable steps rotation 102, 113 and 119 (the latter being represented on the figure 6 ). Each of these pins is associated with a pin for locking all the steps. This device ensures the locking of the moving steps, in a functional position ( Figure 1A ) or retracted ( figure 2 ) of the staircase 10 (to secure the function ladder in the latter position as will be seen later).
  • the figure 16A is a partial view of the staircase of the invention when it is in operation or deployed, at the level of the upper pivot step 103.
  • the figure 16B is a sectional view along AA of the stairs of the figure 16A , the figure 16C being a detail view of the figure 16B at the central mast.
  • ten movable steps 104 to 113 are interposed between the upper pivot step 103 and the lower pivot step 114.
  • the pivot steps 103 and 114 are aligned vertically (they are therefore separated by an angle of 360 °).
  • the angle between each step is 32.73 ° when the staircase is deployed (as shown figure 16B ).
  • the Figure 17A is a partial view of the staircase of the invention when it is retracted, at the upper pivot step 103, the steps 101 to 105 are therefore vertically aligned the angle between the steps is 0 °).
  • the Figure 17B is a sectional view along BB of the stairs of the Figure 17A , the figure 17C being a detail view of the Figure 17B at the central mast.
  • Angular stops or lugs 24 formed on the upper contours 41 and lower 42 of the spacer sleeves or rings 3 of the steps allow two relative positions of each moving step ( Figure 10C ) and the upper pivoting step ( figure 10B ), namely a stop position in staircase position ( Figure 1A ) and a retracted stop position ( figure 2 ). It should be noted, however, that the lower pivoting step 114 does not comprise a lug on its upper contour 41 but only on its lower contour 42 (FIG. figure 10A ).
  • step 113 By again turning the step 113 32.73 ° in the counterclockwise direction, it causes the step 112 until the step 112 comes into contact with the stop of the step 111 which is then positioned above (or vertically aligned with) steps 112 and 113.
  • the rotation of the step 113 is repeated nine times (i.e., the step 113 is rotated 294.57 °) until the steps 103 to 114 are aligned.
  • the user can rotate the central mast 2 relative to the wall (through the two upper pivot 103 and lower 114 steps) until the assembly formed by the steps 100 to 119 and the mast 2 is in the vicinity of the wall 14 as shown in FIG. figure 2 .
  • the Figure 10C illustrates an example of a frame of a moving step in rotation of the staircase of the invention.
  • the framework of such a step allows a custom dressing of the tread in a material such as metal, wood, glass or stone for example.
  • the frame is optimized to provide minimum mass and maximum strength.
  • the environment, stair nosing, railing, lighting are determined according to the constraints of the environment and customer's wishes.
  • the frame 30 of the pivot steps 103 and 114 is customizable and may be covered by a trim piece 31 (screwed by example).
  • apertures or gripping cutouts 40 in the pivotally movable steps in rotation allow to use the assembly as a ladder.
  • This allows, in the retracted position of the staircase, to help transport a bulky object, without having to add a ladder.
  • the staircase can be used in its two positions. As mentioned above, the locking of the staircase in retracted position makes it possible to secure the "ladder" function.
  • the staircase 10 can be retracted into a housing in the wall 14 to further reduce the footprint in this position.
  • the Figure 5B is a perspective view of the upper sleeve 13 which is intended to be placed at the upper end of the central mast 2 and thus above the spacer sleeve 3 of the step 100.
  • This sleeve 13 thus allows the platform 28 of be secured to the central mast 2 in the same plane as the floor 4 and to be perfectly flat when the stair 10 is in function.
  • the shape of the tread steps is not limited to that illustrated but may take the form of a disc section, for example.
  • the railings may not be removed when the staircase 10 is retracted.
  • the steps are preferably in the form of a section of a circle / disk and the guardrail feet 9 are each arranged along the circular portion of the associated step, at a different angle from the guard foot of the step next and the previous, so that the bodyguards 5 juxtapose compactly when the staircase is retracted.
  • the dimensions of the staircase 10 are adaptable according to the available volume, in particular the dimensions (height and width) of the hopper 12, the height between the floors and the access faces of the staircase.
  • the number of steps connected to the wall by pivot may vary.
  • the rack support 16 solidaire central mast 2 may be connected to the ground by a pivot connection.
  • the mast can be made of any other material that provides the required strength (maximum strength) with a minimum footprint.
  • the steps may line respectively to the left and right of the mast, or one could predict that, as needed, only the top or bottom steps are folded.
  • the staircase may be motorized so that the steps and / or the mast are moved from the deployed position to the retracted position, and vice versa, automatically.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Ladders (AREA)

Claims (7)

  1. Einklappbare Wendeltreppe (10), die einen zentralen Mast (2) enthält, der dazu bestimmt ist, vertikal angeordnet zu werden, und dazu angepasst ist, Stufen (100, ..., 119) zu tragen, die sich jeweils in einer im Wesentlichen horizontalen Ebene erstrecken,
    wobei mindestens ein Teil der Stufen (100, ..., 119) bezüglich des zentralen Masts (2) in ihren jeweils im Wesentlichen horizontalen Ebenen drehbeweglich montiert sind, und mindestens zwei der Stufen (100, ..., 119) am Mast (2) befestigt sind, wobei der zentrale Mast (2) mindestens zwei Stellungen einnehmen kann:
    - eine erste Stellung, Funktionsstellung genannt, in der die Stufen (100, ..., 119) um den zentralen Mast (2) herum angeordnet sind;
    - eine zweite Stellung, Einklappstellung genannt, in der die Stufen (100, ..., 119) vertikal fluchtend ausgerichtet sind,
    dadurch gekennzeichnet, dass der zentrale Mast (2) beweglich ist, während er vertikal bleibt, wobei die mindestens zwei Stufen (100, ..., 119) Mittel zur Schwenkverbindung mit einer Mauer (14) enthalten.
  2. Einklappbare Wendeltreppe (10) nach Anspruch 1, dadurch gekennzeichnet, dass das untere Ende des Masts (2) Mittel zum Rollen auf dem Boden (6) enthält.
  3. Einklappbare Wendeltreppe (10) nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass mindestens ein Teil der Stufen (100, ..., 119) mit einer Verriegelungsvorrichtung (15) ausgestattet ist.
  4. Einklappbare Wendeltreppe (10) nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass das obere Ende des Masts (2) dazu bestimmt ist, in der ersten Stellung mit Haltemitteln des Masts (2) zusammenzuwirken.
  5. Einklappbare Wendeltreppe (10) nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Stufen (100, ..., 119) einen Ring (3) enthalten, der dazu bestimmt ist, auf den zentralen Mast (2) aufgeschoben zu werden.
  6. Einklappbare Wendeltreppe (10) nach einem der Ansprüche 1 bis 4 und nach Anspruch 5, dadurch gekennzeichnet, dass der Ring (3) an seiner Ober- (41) und/oder Unterseite (42) mit einer Nase zur Drehblockierung der Stufe versehen ist.
  7. Einklappbare Wendeltreppe (10) nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass die Stufen mindestens eine Greifzone (40) enthalten.
EP11162459.9A 2010-04-15 2011-04-14 Faltbare Wendeltreppe Active EP2378025B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1052874A FR2958954A1 (fr) 2010-04-15 2010-04-15 Escalier helicoidal escamotable
FR1053576A FR2958955B1 (fr) 2010-04-15 2010-05-07 Escalier helicoidal escamotable

Publications (2)

Publication Number Publication Date
EP2378025A1 EP2378025A1 (de) 2011-10-19
EP2378025B1 true EP2378025B1 (de) 2016-11-02

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EP11162459.9A Active EP2378025B1 (de) 2010-04-15 2011-04-14 Faltbare Wendeltreppe

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EP (1) EP2378025B1 (de)
FR (1) FR2958955B1 (de)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2012387142B2 (en) * 2012-07-31 2017-10-19 Anenda Systems Inc. Stair systems and wall assemblies comprising same
DE202013003089U1 (de) 2013-04-04 2013-04-24 Mark Niehüser Aus- und einfahrbare Wendeltreppe zum Erschließen und Abschließen übereinanderliegender Geschosse
CN104088413B (zh) * 2014-07-23 2016-08-24 宋志伟 一种建筑物抗震自助逃生楼梯
CN104533034B (zh) * 2014-12-24 2017-05-10 北京凯盛建材工程有限公司 一种建筑用螺旋楼梯及其布置方法
CN106271409B (zh) * 2016-08-21 2018-08-21 中国十九冶集团有限公司南京分公司 一种绕圆柱钢梯的制作方法
NL2017412B1 (nl) * 2016-09-02 2018-03-09 Verbugt Intellectual Properties B V Trapinrichting, in het bijzonder voor een mobiel bouwwerk
US11466461B1 (en) * 2019-04-27 2022-10-11 Luis Jones Actuatable assemblies
IT202100000842A1 (it) * 2021-01-19 2022-07-19 Federico Zadra Scala a chiocciola retrattile

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1231558A (fr) * 1959-08-03 1960-09-30 Escalier escamotable
FR1459266A (fr) * 1965-10-07 1966-04-29 Escalier
FR2921398B1 (fr) * 2007-09-25 2012-11-30 Campenon Bernard Regions Module pour la construction d'un escalier provisoire, escalier et procede d'installation d'un tel escalier

Also Published As

Publication number Publication date
FR2958955A1 (fr) 2011-10-21
FR2958955B1 (fr) 2017-04-28
EP2378025A1 (de) 2011-10-19

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