EP1916217A1 - Türsystem - Google Patents

Türsystem Download PDF

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Publication number
EP1916217A1
EP1916217A1 EP07118705A EP07118705A EP1916217A1 EP 1916217 A1 EP1916217 A1 EP 1916217A1 EP 07118705 A EP07118705 A EP 07118705A EP 07118705 A EP07118705 A EP 07118705A EP 1916217 A1 EP1916217 A1 EP 1916217A1
Authority
EP
European Patent Office
Prior art keywords
door
axis
reel
pulley
wound
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.)
Withdrawn
Application number
EP07118705A
Other languages
English (en)
French (fr)
Inventor
Peter A. Spiess
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.)
Inventio AG
Original Assignee
Inventio AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Inventio AG filed Critical Inventio AG
Priority to EP07118705A priority Critical patent/EP1916217A1/de
Publication of EP1916217A1 publication Critical patent/EP1916217A1/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B13/00—Doors, gates, or other apparatus controlling access to, or exit from, cages or lift well landings
    • B66B13/30—Constructional features of doors or gates
    • B66B13/303—Details of door panels
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/02—Shutters, movable grilles, or other safety closing devices, e.g. against burglary
    • E06B9/08—Roll-type closures
    • E06B9/11—Roller shutters
    • E06B9/17—Parts or details of roller shutters, e.g. suspension devices, shutter boxes, wicket doors, ventilation openings
    • E06B9/174—Bearings specially adapted therefor
    • E06B2009/1743—Bearings specially adapted therefor allowing radial roller movement
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/02—Shutters, movable grilles, or other safety closing devices, e.g. against burglary
    • E06B9/08—Roll-type closures
    • E06B9/11—Roller shutters
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/56—Operating, guiding or securing devices or arrangements for roll-type closures; Spring drums; Tape drums; Counterweighting arrangements therefor

Definitions

  • the invention relates to doors systems and, in particular, to a door system comprising a door that is wound upon a vertical axis during an opening operation.
  • Each door is generally formed from a stainless steel sheet or interconnected vertical rigid panels, typically manufactured from a metal.
  • the plurality of panels or sheet is wound onto and unwound from a vertical axis in the form of a motorised reel whereby the driving force from the motor is transmitted through the reel and laterally onto the door to provide lateral movement thereof.
  • the door is biased to its closed position by a weight or spring attached to the leading edge of the door.
  • the motor must develop a force which must overcome the inherent friction and also the counteracting biasing force of the weight or spring to provide the necessary acceleration.
  • the biasing force exerted through the door not only biases the door to its closed position but also ensures that the door is tightly wound upon the vertical axis as the door is opened. Both the driving force and the biasing force are laterally transmitted though the door and accordingly the door must be sufficiently strong so as to withstand these lateral forces during operation.
  • the closing force developed by the motor must not be greater than the biasing force. Otherwise the door will unwind from the vertical axis at a pace greater than it is drawn across the opening by the biasing force, which will cause the door to bunch up and will cause the door to jam. Thus the closing speed of the door is effectively limited by the biasing force.
  • An objective of the present invention is to reduce the lateral forces transmitted through the door while ensuring that, in operation, the door is tightly wound upon the vertical axis.
  • a door system comprising, an axis, a door attached at a first end to the axis for winding and unwinding thereupon CHARACTERISED IN further comprising a tensioned member surrounding and partially engaging an outer layer of the door wound upon the axis. Accordingly, the tensioned member exerts a radial force to the outer layer of the door wound upon the axis thereby ensuring that the door is consistently wound tightly upon the axis and permitting the fast unrolling of the door from the axis. Furthermore, although the tensioned member exerts radial force to the door, it imparts no or no significant lateral forces to the door. Accordingly, the door can have a simpler construction permitting material, cost and space savings.
  • the tensioned member is endless.
  • the tensioned member may have two opposing ends secured together by a tensioning spring to define a closed-loop.
  • the two opposing ends of the tensioned member can be fixed to the door either directly or by means of a tensioning spring.
  • the tensioned member circumscribes a path from a first pulley, to a second pulley, around the outer layer of the door and back to the first pulley.
  • the second pulley increases the wrap angle of the tensioned member around the outer layer of the door thereby enhancing the engagement between the tensioned member and the outer layer of the door and ensuring more uniform distribution of the radial forces.
  • the first pulley can be positioned at an opposing side of a doorway to the second pulley and the axis so that the tensioned member spans across the entire doorway.
  • diverting pulleys can be placed between the first and second pulleys, and between the outer layer of the door and the first pulley, respectively to divert the path of the tensioned member. Accordingly, the axis and all components of the tensioning system can be located on one side of the doorway.
  • any motor used to drive the door between its open and closed positions can be more efficient enabling savings in cost, complexity and space requirement.
  • Such a motor can be used to rotate the axis directly.
  • the motor it my be used to rotate the first pulley, which it turn drives the tensioned member and, provided that there is sufficient friction between the tensioned member and the outer layer of the door, results in the selective opening and closing of the door.
  • the axis is mounted on a first lever which is rotatable about a fixed pivot point. Accordingly, the net radial force acting on the outer layer of the door can be used to bias the first lever about the pivot point.
  • This attribute can be used to ensure that the point at which the outer layer of the door engages/disengages with the penultimate door layer is substantially in a plane of a guide channel used to guide the unwound door across the doorway and that the door at this point is substantially in alignment with the guide channel.
  • the door is smoothly wound upon the reel directly from the guide channel.
  • the second pulley may be used not only to deflect the tensioned member but also to limit rotation of the first lever about its pivot point.
  • a separate support member can be used to limit the rotation of the first lever. If the support member is positioned along an arc subtended by the axis about the fixed pivot point and aligned with the plane of the door as it moves along the guide channel to ensure that the point of engagement/disengagement of the door is always in the plane of and in direct alignment with the guide channel.
  • the first pulley is biased by a spring to impart the required tension into the tensioned member.
  • the first pulley can be biased by a weight to impart the required tension into the tensioned member.
  • the door system may further comprise a third pulley mounted on a second pivotable lever which is connected to the first lever for concurrent rotation therewith such that the tensioned member defines an S-shaped path over the second and third pulleys.
  • a third pulley mounted on a second pivotable lever which is connected to the first lever for concurrent rotation therewith such that the tensioned member defines an S-shaped path over the second and third pulleys.
  • the first and second levers rotate concurrently, this is compensated for by an increase in the path of the endless belt between the second and third pulleys.
  • at least one of the first and second levers is spring biased.
  • the axis can be mounted for movement within a slide channel. Accordingly, as the door is unwound from the axis, the axis is progressively drawn along the slide channel by the net force acting on the outer layer of the wound door.
  • Fig. 1 is an exploded, perspective view of an elevator door system 1 according to the present invention incorporating a car door 2 which, in use, is used to control access to an elevator car (not shown) through a doorway from a landing within a building.
  • the door 2 is composed of a plurality of vertically aligned panels 4 bound at their upper and lower extremities by flexible belts 6. Each of the panels 4 is preferably extruded from aluminium for its superior strength to weight ratio.
  • the belts 6 are attached at one end to a reel 12 mounted at one side of the doorway.
  • the reel 12 can be rotated about its axis 14 by a motor 18 to open and close the door 2.
  • the door 2 is guided across the doorway in upper and lower guide channels 10.
  • the door system 1 further comprises an upper and a lower tensioning system 20 each comprising a pre-tensioned, endless belt 22 which circumscribes a path around a return pulley 24, over a deflection pulley 26 and around the outer layer of the door 2 wound upon the reel 14 and back to the return pulley 24.
  • This arrangement ensures that the door 2 is tightly wound upon the reel 14 since each endless belt 22 consistently exerts a radial force on the outer layer of the door 2 wound upon the reel 10.
  • the arrangement enables the endless belts 22 to run freely alongside any portion of the door 2 which has been unwound from the reel 12 and into the guide channels 10. Accordingly, although each endless belt 22 exerts a radial force to the door 2 to ensure it is wound tightly upon the reel 12, it imparts no lateral force to the door 2.
  • each endless belt 22 is partially accommodated within a groove 8 provided in the respective flexible belt 6 of the door 2 for guidance and to ensure correct positioning during operation.
  • Fig. 2A is a plan view of a door system 1 according to a first specific embodiment of the invention.
  • the system 1 is illustrated in an open position wherein the majority of the door 2 is wound upon the reel 12.
  • the reel 12 is fixed via its axis 14 at the right side of the doorway.
  • a guidance roller 16 which, in operation, guides the door 2 into and out of the guide channel 10, and the deflection pulley 26 of the tensioning system 20 are also located on the right side of the doorway.
  • the return pulley 24 is fixed via a biasing spring 28 to the left side of the doorway.
  • the endless belt 22 (depicted by a hashed line) extends from the return pulley 24 across the doorway to the deflection pulley 26, around the outer layer of the door 2 wound upon the reel 12, about the guidance roller 16 and back to the return pulley 24.
  • the biasing spring 28 exerts a force on the return pulley 24 which in turn imparts a tension into the endless belt 22.
  • the thus tensioned endless belt 22 exerts radial forces (indicated by the arrows in Fig. 2A) to that portion of the outer layer of the door 2 with which it engages and also imparts radial forces to the door 2 as it passes over the guidance roller 16. Accordingly, although the tensioning system 20 exerts no lateral force on the door 2, it still ensures that the door 2 can be tightly wound upon the reel 12 and that the door 2 can be quickly unwound from the reel 12 without jamming.
  • the motor 18 rotates the reel 12 clockwise and the door 2 is progressively unwound from the reel 12 and guided by the guidance roller 16 into the guide channel 10, as shown in Fig. 2B.
  • This progressive reduction in the outer diameter of the door 2 wound upon the reel 12 causes a corresponding reduction in the path length of the endless belt 22 between the deflection pulley 26 and the guidance roller 16.
  • this effect is compensated for by the gradual contraction of the biasing spring 28 and accordingly the length of the endless belt 22 remains substantially constant throughout operation.
  • any suitable surface that guides the door 2 smoothly into and out of the guide channel 10 can be either integrated into or provided at the entrance of the guide channel 10.
  • Fig. 3A is a plan view of a door system 1 according to a second specific embodiment of the invention.
  • the system 1 is illustrated in an open position wherein the majority of the door 2 is wound upon the reel 12.
  • the axis 14 of reel 12 is no longer fixed but instead is mounted to upper and lower levers 30 which can rotate about fixed pivot points 32.
  • the endless belt 22 engages with the upper left, upper right and lower right quadrants (as shown in the Fig.) of the outer layer of the door 2.
  • the fixed support roller 34 is positioned such that the point at which it engages with the door 2 is along an arc subtended by the reel axis 14 about the fixed pivot point 32. This arrangement of the support roller 34 ensures that the point at which the outer layer of the door 2 engages/disengages with the penultimate door layer on the reel 12 is in the plane of the guide channel 10 and that the door 2 at this point is in alignment with the guide channel 10. Hence, in operation, the door 2 is smoothly wound upon the reel 12 directly from the guide channel 10.
  • the motor 18 rotates the reel 12 clockwise about its axis 14 and the door 2 is progressively unwound from the reel 12 directly into the guide channel 10, as shown in Fig. 3B.
  • the net radial force imparted to the outer layer of the door 2 by the endless belt 22 biases the reel 12 towards the support roller 34 and accordingly the lever 30 rotates clockwise about its pivot point 32.
  • the spring 28 gradually contracts to compensate for the effects of the progressive reduction in the outer diameter of the door 2 wound upon the reel 12.
  • lever 30 can be arranged differently. Such an alternative arrangement is illustrated in Figs. 4A and 4B.
  • the fixed pivot point 32 of the lever 30 has been transferred to the opposing side of the guide channel 10 and the support roller 34 of the previous embodiment has been removed.
  • the net force acting on the outer layer of the wound door 2 biases the reel 14 towards the deflection pulley 26 which as well as deflecting the endless belt 22 also serves to limit the rotation of the lever 30 about its pivot point 32.
  • the fixed pivot point 32 of the lever 30 and the deflection pulley 26 can be arranged to ensure that the point at which the outer layer of the door 2 engages/disengages with the penultimate door layer on the reel 12 is substantially in the plane of the guide channel 10 and that the door 2 at this point is substantially in alignment with the guide channel 10. Hence, in operation, the door 2 is smoothly wound upon the reel 12 directly from the guide channel 10.
  • the motor 18 rotates the reel 12 clockwise about its axis 14 and the door 2 is progressively unwound from the reel 12 and into the guide channel 10, as shown in Fig. 4B.
  • the net radial force imparted to the outer layer of the door 2 by the endless belt 22 biases the reel 12 towards the deflection pulley 26 and accordingly the lever 30 rotates counterclockwise about its pivot point 32.
  • the spring 28 gradually contracts to compensate for the effects of the progressive reduction in the outer diameter of the door 2 wound upon the reel 12.
  • Figs. 5A and 5B are plan views of a door system 1 according to a fourth specific embodiment of the invention in which the reel axis 14 is mounted on conventional bearings within an upper and a lower slide channel 36. For clarity, only one of the slide channels 36 is shown in the drawing and further described.
  • the reel 12 can rotate about its axis 14 and the axis 14 can move along the path defined by the slide channel 36.
  • the net radial force imparted to the outer layer of the door 2 by the endless belt 22 biases the reel 12 towards the deflection pulley 26 and the support roller 34. Accordingly, on closing as shown in Fig.
  • the door 2 is unwound from the reel 12 and the reel axis 14 is drawn along the slide channel 36 towards the deflection pulley 26 and the support roller 34 by the net force acting on the outer layer of the wound door 2.
  • the spring 28 gradually contracts to compensate for the effects of the progressive reduction in the outer diameter of the door 2 wound upon the reel 12.
  • support roller 34 can be replaced by any suitable surface which permits the door 2 to move smoothly alongside it.
  • the biasing spring 28 which fixes the return pulley 24 to the left side of the doorway expands or contracts to compensate for the increase or reduction in the path length of the endless belt 22 about the outer layer of the wound door 2 as the door 2 is opened or closed, respectively.
  • FIGs. 6A and 6B An alternative arrangement providing the same functionality is depicted in Figs. 6A and 6B.
  • the door system 1 contains an upper and a lower h-shaped linkage. For clarity, only one of the h-shaped linkages has been shown in the drawings and further described.
  • the linkage comprises a first lever 30 connecting the reel axis 14 to a fixed pivot point 32, a second lever 40 connecting a fixed deflection pulley 26 to a second deflection pulley 38, and a link 44 connecting the reel axis 14 to an intermediate hinge 42 on the second lever 40.
  • the second lever 40 is spring biased about the fixed deflection pulley 26 on the counterclockwise direction.
  • the endless belt 22 extends from the return pulley 24, which is securely fixed to the left side of the doorway, ascribes a S-shaped path over the deflection pulleys 26 and 38, partially engages with the outer layer of the door 2 wound upon the reel 14 and returns back to the fixed return pulley 24.
  • the spring biased second lever 40 imparts a tension into the endless belt 22.
  • the thus tensioned endless belt 22 exerts radial forces to the outer layer of the door 2 with which it engages. Accordingly, although the endless belt 22 exerts substantially no lateral force on the door 2, it still ensures that the door 2 can be tightly wound upon the reel 12 and that the door 2 can be quickly unwound from the reel 12 without jamming.
  • the spring biased second lever 40 also tends to bias the entire h-shaped linkage counterclockwise about the fixed deflection pulley 26 and the fixed pivot point 32.
  • the fixed deflection pulley 26 as well as deflecting the endless belt 22 also serves to limit the rotation of the first lever 30 about its pivot point 32.
  • the fixed pivot point 32 of the first lever 30 and the fixed deflection pulley 26 can be arranged to ensure that the point at which the outer layer of the door 2 engages/disengages with the penultimate door layer on the reel 12 is substantially in the plane of the guide channel 10 and that the door 2 at this point is substantially in alignment with the guide channel 10. Hence, in operation, the door 2 is smoothly wound upon the reel 12 directly from the guide channel 10.
  • the motor 18 rotates the reel 12 clockwise about its axis 14 and the door 2 is progressively unwound from the reel 12 directly into the guide channel 10, as shown in Fig. 6B, and the spring biasing of the second lever 40 skews the entire h-shaped linkage counterclockwise about the fixed deflection pulley 26 and the fixed pivot point 32.
  • the motor 18 rotates the reel 12 clockwise about its axis 14 and the door 2 is progressively unwound from the reel 12 directly into the guide channel 10, as shown in Fig. 6B, and the spring biasing of the second lever 40 skews the entire h-shaped linkage counterclockwise about the fixed deflection pulley 26 and the fixed pivot point 32.
  • the motor 18, instead of rotating the reel 12 about its axle 14, can be positioned at the opposing side of the doorway to rotate the return pulley 24 provided that there is sufficient friction between the endless belt 22 and the groove 8 provided in the flexible belt 6 of the outer layer of the door 2 wound upon the reel 12.
  • this arrangement is particularly apt for use in the door system shown in Figs. 6A and 6B as the return pulley 24 is securely held in position, it can also be used as an alternative for embodiments in which the return pulley 24 is spring biased.
  • the endless belt 22 has been depicted in Figs. 2 to 6 as being displaced from the outer layer of the door 2 wound upon the reel 12, however it will be appreciated that since the endless belt 22 is partially accommodated within the groove 8 provided in the flexible belt 6 of the door 2, the path of the endless belt 22 is in fact substantially concurrent with the door 2.
  • the belt 22, rope cable or wire need not be endless.
  • the invention can be realised using a belt having first and second opposing ends wherein the first end is secured to the door 2 at a first fixation point in the vicinity of the leading panel 4, and the belt extends therefrom along the same path shown in Fig. 1 about the return pulley 24, the deflection pulley 26, and the outer layer of the door 2 to the second end secured to the door at a second fixation point close to the first fixation point.
  • the tension is transmitted in a closed-loop path, the majority of which is defined by the belt with a small minority being defined by the door between the two fixation points.
  • the second belt end can be secured to the second fixation point by a spring to impart the required tension into the closed-loop path and to compensate for the effects of the progressive changes in the outer diameter of the door 2 wound upon the reel 12 in operation. Accordingly, the biasing spring 28 used in the embodiments of Figs. 2-5 is no longer required. In fact, the same benefit can be derived from an arrangement wherein the two ends of the belt are not secured to the door 2, but are connected together by the spring.
  • the deflection pulley 26 increases the wrap angle of the endless member around the outer layer of the door thereby enhancing the engagement between the endless member and the outer layer of the door and ensuring more uniform distribution of the radial forces, it will be appreciated that the deflection pulley 26 is not essential for the invention.
  • Fig. 7 is an exploded, partial, perspective view of an elevator door system 1 according to the present invention incorporating an alternative tensioning system 20' to that illustrated in Fig. 1.
  • the tensioning system 20' comprises a pre-tensioned, endless rope or cable 22' having a circular cross-section. Instead of extending across the entire doorway, the cable 22' is diverted upwards to the return pulley 24 arranged above the door 2 by diverting pulleys 46 and 48.
  • the cable 22' circumscribes a path down from the return pulley 24, under a first diverting pulley 46 and into the horizontal plane, to the deflection pulley 26, around the outer layer of the door 2 wound upon the reel 14, alongside the path of the door 2 as it is unwound from the reel 14, diverted by the second diverting pulley 48 into the vertical plane and back to the return pulley 24.
  • the second diverting pulley 48 is arranged so that the path of the cable 22' between the outer layer of the door 2 and the second diverting pulley 48 makes a slight horizontal angle ⁇ to the path of the door 2 as it moves along the guide channel 10.
  • the invention has been specifically described for use as an automatic door system for use on an elevator car within an elevator installation, it can equally be applied to a manual system or used in different technical fields. Furthermore, the invention can be easily adapted for horizontal as well as vertical use.

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  • Elevator Door Apparatuses (AREA)
EP07118705A 2006-10-25 2007-10-17 Türsystem Withdrawn EP1916217A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP07118705A EP1916217A1 (de) 2006-10-25 2007-10-17 Türsystem

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP06122910 2006-10-25
EP07118705A EP1916217A1 (de) 2006-10-25 2007-10-17 Türsystem

Publications (1)

Publication Number Publication Date
EP1916217A1 true EP1916217A1 (de) 2008-04-30

Family

ID=39212280

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07118705A Withdrawn EP1916217A1 (de) 2006-10-25 2007-10-17 Türsystem

Country Status (1)

Country Link
EP (1) EP1916217A1 (de)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5284199A (en) * 1989-10-23 1994-02-08 Finch Harry E Panel construction for a wall or roll-up door system
US5819831A (en) * 1995-12-22 1998-10-13 Schanz; Hans Roller blind drive, more particularly for shade producing means
EP1447515A1 (de) * 2003-02-12 2004-08-18 Karl Achenbach GmbH & Co.KG Rolltor mit verschieblicher Welle
WO2005070807A2 (en) * 2004-01-21 2005-08-04 Inventio Ag Operating device comprising an elevator door folding around a vertical axis
US20050252623A1 (en) * 2004-05-12 2005-11-17 Mctavish Donald Flexible curtain closure device drive and containment mechanism
US20060037718A1 (en) * 2002-06-13 2006-02-23 Dynaco International, S.A. Device with shutter winding about a drum

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5284199A (en) * 1989-10-23 1994-02-08 Finch Harry E Panel construction for a wall or roll-up door system
US5819831A (en) * 1995-12-22 1998-10-13 Schanz; Hans Roller blind drive, more particularly for shade producing means
US20060037718A1 (en) * 2002-06-13 2006-02-23 Dynaco International, S.A. Device with shutter winding about a drum
EP1447515A1 (de) * 2003-02-12 2004-08-18 Karl Achenbach GmbH & Co.KG Rolltor mit verschieblicher Welle
WO2005070807A2 (en) * 2004-01-21 2005-08-04 Inventio Ag Operating device comprising an elevator door folding around a vertical axis
US20050252623A1 (en) * 2004-05-12 2005-11-17 Mctavish Donald Flexible curtain closure device drive and containment mechanism

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