[go: up one dir, main page]
More Web Proxy on the site http://driver.im/

WO2005111364A1 - Roller door arrangement - Google Patents

Roller door arrangement Download PDF

Info

Publication number
WO2005111364A1
WO2005111364A1 PCT/SE2005/000262 SE2005000262W WO2005111364A1 WO 2005111364 A1 WO2005111364 A1 WO 2005111364A1 SE 2005000262 W SE2005000262 W SE 2005000262W WO 2005111364 A1 WO2005111364 A1 WO 2005111364A1
Authority
WO
WIPO (PCT)
Prior art keywords
door arrangement
flexible
roller door
roller
arrangement
Prior art date
Application number
PCT/SE2005/000262
Other languages
French (fr)
Inventor
Tomas Hagel
Mikael Emanuelsson
Tom Brandhoff
Bernard Schuit
Original Assignee
Crawford Group Ab
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 Crawford Group Ab filed Critical Crawford Group Ab
Priority to CN2005800194951A priority Critical patent/CN1977088B/en
Publication of WO2005111364A1 publication Critical patent/WO2005111364A1/en

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E06DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06BFIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/02Shutters, movable grilles, or other safety closing devices, e.g. against burglary
    • E06B9/08Roll-type closures
    • E06B9/11Roller shutters
    • E06B9/13Roller shutters with closing members of one piece, e.g. of corrugated sheet metal
    • EFIXED CONSTRUCTIONS
    • E06DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06BFIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/56Operating, guiding or securing devices or arrangements for roll-type closures; Spring drums; Tape drums; Counterweighting arrangements therefor
    • E06B9/58Guiding devices
    • E06B2009/585Emergency release to prevent damage of shutter or guiding device

Definitions

  • the present invention relates to a roller door arrangement comprising a flexible door screen, wound on a winding roller which is mounted rotatably at the door opening, wherein the roller door arrangement is provided with flexible traction members associated with at least one driving device for applying a traction force on the flexible door screen, to enable the flexible door screen to be movable between a closed position and an open position.
  • a roller door arrangement comprising a flexible door screen, wound on a winding roller which is mounted rotatably at the door opening, wherein the roller door arrangement is provided with flexible traction members associated with at least one driving device for applying a traction force on the flexible door screen, to enable the flexible door screen to be movable between a closed position and an open position, the lateral portions of the flexible door screen is provided with a protruding portion adapted for being guided by a guide and holding the flexible door screen between the guides, and that the flexible door screen has at least one slit extending in the longitudinal direction of the flexible door screen, provided with a reconnectable link portion, said reconnectable link portion being adapted to engage the door screen slit and disengage when exposed to impact exceeding a threshold value.
  • the protruding portion in the guide is held thoroughly in place to withstand wind load.
  • the holding capacity of the guide exceeds the impact threshold value.
  • the protrusions of the lateral edges of the door screen associated to the guides will provide support for external loading, such as wind load.
  • the flexible traction members, associated with a driving device, will provide a pulling force to the door screen in the intended direction of movement of the door screen during opening or closing.
  • the slit is held together by a reconnectable link portion adapted to disengage said slit when the flexible door screen is exposed to a force exceeding a threshold value, such as impact from e.g. a truck.
  • a reconnectable link portion adapted to disengage said slit when the flexible door screen is exposed to a force exceeding a threshold value, such as impact from e.g. a truck.
  • both sides of the roller door arrangement are provided, as seen from one lateral portion and towards the middle of the door, with said protruding portion, said flexible traction member and said reconnectable link portion.
  • the construction of the door arrangement makes it possible to use a profile, extending in the longitudinal direction of the roller door arrangement, to cover said guide, said flexible traction member and said reconnectable link portion of one side of the roller door arrangement, as seen straight towards the flexible door screen.
  • a substantially C-shaped profile, extending in the longitudinal direction of the roller door arrangement is arranged around the lateral portion of the flexible door screen.
  • the reconnectable link portion is a zipper.
  • any of said reconnectable link portions is a reconnectable sealing device comprising a protruding portion for engaging a complementary receiving portion having two lip portions.
  • a continuous portion comprising a reconnectable link portion or portions are used.
  • the link portion is adaptable to the properties of the door screen in order to accomplish smooth operation of the door arrangement.
  • any type of reconnectable link portion may be used for this purpose .
  • any reconnectable link portion is reconnectable during an opening and closing cycle of the roller door arrangement.
  • a self-repairing door arrangement is accomplished.
  • a divided funnel is arranged fixed in proximity to the top of a slit of the door screen when in a closed position, such that the reconnectable link portion passes therethrough, when the roller door arrangement performs a closing or opening movement, in order to reconnect the slit of the flexible door screen.
  • the winding roller is integrally rotatably connected to a second drum on which is wound, in contrary direction to the flexible door screen, the flexible traction member, said flexible traction member describing a path from said winding roller around at least one guide roller at the base of the door opening via a tensioning roller to said second drum.
  • Each side of the flexible door screen has a flexible traction member connected thereto and arranged along the longitudinal direction thereof.
  • the flexible traction member is a belt.
  • the flexible traction member is a rope, a wire, a cable.
  • Other flexible traction members of various materials may be used as long as they are suitable for transfer a pulling force.
  • the roller door arrangement comprises a detector and security device for interrupting closing movement when an obstacle is detected.
  • the roller door arrangement comprises a lower bar with a detector for detecting an obstacle and possibly interrupting closing movement.
  • the roller door arrangement comprises a lower bar provided with a lower bar reconnector in proximity to a zone where any slit in the flexible door screen lead.
  • a preferred embodiment of the invention relates to a roller door arrangement, which comprises at least one flexible door screen movable between a closed position and an open position, and vice versa, and a lower bar arranged at the lower edge of the flexible door screen, wherein end portions of the lower bar are operatively connected to guides, arranged at opposite sides of a door way, by a releasable connecting element, said connecting element comprises an engagement device and a holder element, said engagement device is held resiliently by the holder element for, when exposed to loading exceeding a threshold value, enabling a translation between the engagement device and the holder element, in a direction substantially perpendicular to a plane defined by said flexible door screen in its closed position.
  • the translation between the engagement device and the holder element is such that the end portions of the lower bar is disengaged from the operatively connection with the guides when exposed to a substantially horizontal impact force.
  • the translation is essentially directed in the same direction as the applied impact force, wherein a release of a substantially stiff lower bar being feasible.
  • the use of a substantially stiff lower bar provide for a proper stretching of the flexible door screen. Further, the use of a substantially stiff lower bar provides for a reduced risk of air leakage and unintended release of the flexible door screen due to wind loads .
  • the direction of translation for release of the lower bar also enabling a reconnection of the lower bar in a direction substantially perpendicular to the plane defined by the flexible door screen in its closed position.
  • the engagement device comprises at least one path along which the holder element is guided relative to the engagement device during said translation, said path comprises a first sloping surface in order to establish a threshold for release of the holder element and the engagement device.
  • the path preferably comprises a second sloping surface outside the first sloping surface, said second sloping surface has an inclination less than an inclination of the first sloping surface in order to establish a threshold for reconnection less than the threshold for release.
  • the inclination of the sloping surfaces should within the context of this application mean, any surface with a curved, inclined or divergent extension in relation to the direction of translation between the engagement device and the holder element.
  • This arrangement with a first sloping surface providing a threshold for the release of the lower bar and a second sloping surface providing a threshold for reconnection of the lower bar, enabling a simple and robust operatively connection of the lower bar to each one of the guide.
  • the shape of the engagement device, and especially the shape of the sloping surfaces is considered important for enabling a suitably performance of the release and reconnection of the lower bar.
  • the holder element is arranged resiliently movable in a substantially vertical direction.
  • the vertical movement due to the applied impact force allows for an opening of the holder element, wherein the engagement device is free to translate relatively to the holder element in the preferred direction perpendicular to the door screen.
  • the resilient effect of the holder element may be achieved in several ways, for instance by spring elements, elastic materials or the like.
  • a resilient stiffness for holding the engagement device by the holder element is adjustable. The adjustment of the resilient stiffness enables for setting a predetermined threshold of the force needed for the release of the lower bar. The magnitude of such a predetermined threshold may be varied in order to adapt the release of the lower bar to existing local conditions. Further, it is optional to set the predetermined threshold during assembly of the door arrangement or during installation of door arrangement.
  • the holder element has at least one rod member extending in the longitudinal direction of the bottom bar, and overlapping part of the engagement device.
  • the use of a rod member provides for a simple and robust resilient holder element, which comprises few components.
  • the rod member is preferably made of a metal material and in particular a spring steel.
  • a protruding length of the rod member beyond a support element is adjustable and hence the resilient stiffness of the protruding length of the rod member is adjusted, by the fact that the support member is movable and securable around the rod member.
  • the resilient holding of the engagement device preferably is arranged to be adjustable between 10-200 kg, preferably 20-170 kg, and in particular 30-150 kg.
  • the engagement device is intermediately engaged between two rod members forming part of the holder element.
  • the engagement device and the holder element for reconnection is achieved by a reconnecting device during an opening and/or closing cycle of the door arrangement.
  • a reconnecting device is arranged as a funnel shaped guide portion and provided along said guides .
  • the lower bar comprises the holder element.
  • the engagement device is slidably attached to the guide or any intermediate portion between the guide and the lower bar.
  • the lower bar comprises the engagement device, wherein the corresponding holder element is associated with the guide.
  • the door arrangement is a fast acting self repairing roller door arrangement.
  • Fig. 1 is a schematic perspective view of a door arrangement, in an open position, according to a first embodiment of the invention.
  • Fig. 2 is a partial schematic perspective view from one side of a door arrangement, in an open position, according to a first embodiment of the invention.
  • Fig. 3 is a partial schematic perspective view of a reconnectable link portion, according to one further embodiment of the invention.
  • Fig. 4 is a partial schematic perspective view of a reconnectable link portion, according to one alternative embodiment of the invention.
  • Fig. 5 is a vertical section taken from section V-V in fig 1.
  • FIG. 6 is a partial view in perspective showing a lower bar of the roller door arrangement in a connected state .
  • Fig. 7 is a partial view in perspective showing the lower bar according to fig. 6 in a released state.
  • Fig. 8 is a partial view in perspective showing the lower bar of the roller door arrangement according to fig. 1 in a self reparing state during a closing operation.
  • Fig. 9 shows in a partial view in perspective support elements for adjustable resilient stiffnes of the holder element.
  • Fig. 10 is a side view of the engagement device.
  • Figs, lla-llc shows in a schematically view the release of the lower bar.
  • Figs. 12a-12c shows in a schematically view the recconecction of the lower bar.
  • FIG. 13a is a schematic side view of a driving arrangement of the first embodiment in accordance with fig 2.
  • Fig. 13b is a schematic side view of a driving arrangement according to a second aspect of the arrangement .
  • Fig. 13c is a schematic side view of a driving arrangement according to a third aspect of the door arrangement .
  • Fig. 13d is a schematic side view of a driving arrangement according to a fourth aspect of the door arrangement .
  • Fig. 13e is a schematic side view of a driving arrangement according to a fifth aspect of the door arrangement .
  • Fig. 13a is a schematic side view of a driving arrangement of the first embodiment in accordance with fig 2.
  • Fig. 13b is a schematic side view of a driving arrangement according to a second aspect of the arrangement .
  • Fig. 13c is a schematic side view of a driving arrangement according to a third aspect of the door arrangement .
  • Fig. 13d is a schematic side view of a driving arrangement according to
  • a roller door arrangement 1 comprises a flexible door screen 5, wound on a winding roller 15 which is mounted rotatably at the door opening.
  • the roller door arrangement 1 is provided with flexible traction members 4 associated with at least one driving device 16 for applying a traction force on the flexible door screen 5, to enable the flexible door screen 5 to be movable between a closed position and an open position.
  • the lateral portions 6 of the flexible door screen 5 is provided with a protruding portion 7 adapted for being guided by a guide channel 3 and holding the flexible door screen between the guide channels 3.
  • the door screen 5 is held substantially stretched between the guide channels.
  • the flexible door screen 5 has at least one slit 19 extending in the longitudinal direction of the flexible door screen 5.
  • the slit is provided with a reconnectable link portion 10, said reconnectable link portion 10 being adapted to engage the door screen slit 19 and disengage when exposed to impact exceeding a threshold value.
  • the winding roller 15 is integrally rotatably connected to a second drum 47 on which is wound, in contrary direction to the flexible door screen 5, the flexible traction member 4, said flexible traction member 4 describing a path from said winding roller 15 around at least one guide roller 22 at the base of the door opening via a tensioning roller 24 to said second drum 47.
  • each side of the flexible door screen has a flexible traction member connected thereto and arranged along the longitudinal direction thereof.
  • the flexible traction member 4 is a belt.
  • a winding roller 115 is connected to a shaft associated rotatably to a motor forming part of said driving device 16.
  • a flexible traction member describes a path from said winding roller 103 around at least one guide roller 122 at the base of the door opening via a tensioning roller 124 to a second winding roller 148 arranged on the same shaft as the winding roller 115 but preferably to an outer side of the door screen.
  • the path of the flexible traction member is preferably arranged with an angle during at least one part of the path as can be seen from an other direction.
  • the driving device 16 and hence the winding rollers 115, 148 is able to move along with a forward and backward motion.
  • Fig. 13c discloses a third aspect of the driving device of the door arrangement.
  • a winding roller 215 is connected to a shaft associated to a motor forming part of said driving device 16. On said winding roller 215 the flexible door screen 5 is wound.
  • a flexible traction member describes a path from said winding roller 215 around at least one guide roller 222 at the base of the door opening to a second winding roller 248 arranged on the same shaft as the winding roller 215 but preferably to an outer side of the door screen. Hence, the path of the flexible traction member is preferably arranged with an angle during at least one part of the path as can be seen from an other direction.
  • Either of the first and second winding rollers 215, 248 has a drum comprising a spring.
  • the outer winding roller 248 comprises a conical drum making it possible to maintain the flexible traction member in a stretched condition during winding operations.
  • a reversible motor is used as indicated by the arrow.
  • Fig. 13d discloses a fourth aspect of the driving device of the door arrangement.
  • a first winding roller 315 is connected to a first shaft associated to a first motor forming part of said driving device 316.
  • On said first winding roller 315 the flexible door screen 5 is wound.
  • a flexible traction member describes a path from said first winding roller 315 around at least one guide roller 322 at the base of the door opening to a second winding roller 348 arranged on a second shaft driven by a second motor 349 forming part of said driving device 316.
  • FIG. 13e illustrates a fifth aspect of the driving device of the door arrangement.
  • a winding roller 415 is connected to a shaft associated to a motor forming part of said driving device 16.
  • the flexible door screen 5 is wound.
  • a flexible traction member comprises a weight 448.
  • the flexible traction member describes a path from said winding roller 415.
  • the driving device 16 preferably using an irreversible motor, is used to perform an opening operation.
  • Fig. 13f illustrates a sixth aspect of the driving device of the door arrangement.
  • a winding roller 515 is connected to a shaft associated to a motor forming part of said driving device 16. On said winding roller 515 the flexible door screen 5 is wound.
  • a flexible traction member comprises a spring 550.
  • the flexible traction member describes a path from said winding roller 515.
  • the driving device 16 preferably using an irreversible motor, is used to perform an opening operation.
  • Various principles for performing a secure and safe operation of the door arrangement have been illustrated in fig 13a-13f. Furthermore, a secure and safe operation is accomplished with any aspect of the above disclosed door arrangements using any suggested path of the flexible traction member on both sides of the door.
  • a reconnectable link portion 10 is a zipper 12.
  • the protruding portion 17 may also be accomplished by using part of a zipper.
  • the zipper is attached to the flexible screen in a conventional manner.
  • a reconnectable link portion 10 is a reconnectable sealing device comprising a protruding portion 17 for engaging a complementary receiving portion 18 having two lip portions.
  • the door arrangement 1 according to the embodiment shown in figs. 6-8 has at least one slit 19 in the longitudinal direction of the flexible door screen 5.
  • the slit 19 is provided with a reconnectable portion, wherein said reconnectable portion being adapted to engage the door screen slit 19 and disengage when exposed to impact exceeding a threshold value.
  • said reconnectable portion comprises the reconnectable portion a zipper.
  • the reconnectable portion is arranged reconnectable during an opening and closing cycle of the roller door arrangement 1.
  • the flexible door screen may be provided without the slit 19.
  • the lateral end portions of the flexible door screen either may be guided in the guides or may be free from the guides. According to the preferred embodiment of figs.
  • the lower 7 bar is operatively associated with the guides 3 in a releasable manner.
  • the lower bar 7 is connected to the guides 3 by an intermediate element 21 attached to a lower part of a lateral portion 23 of the flexible door screen 5.
  • the intermediate element 21 is formed as a metal plate, wherein one edge of the metal plate is provided with a protruding portion guided in the guide 3.
  • the intermediate element 21 is preferably pivotable engaged by the corresponding lateral portion 23 of the flexible door screen 5.
  • the engagement device 11 is attached to the intermediate element 21 and the holder element 13 is attached to the lower bar 7.
  • the holder element 13 comprises two resilient rod members 25 extending in the longitudinal direction of the lower bar 7.
  • the engagement device 11 is in a preferred embodiment formed as one piece comprising recesses 27 arranged at opposite sides, for receiving the holder element rod members 25.
  • Each one of the recesses 27 protrudes in the longitudinal direction of the lower bar 7 and forms part of a path 29 for guiding the rod members 25 during translation relatively to the engagement device 11 in a direction substantially perpendicular to a plane defined by the flexible door screen 5 in its closed position.
  • the path 29 comprises a first sloping surface 31 closest to the center of the engagement device 11 and a second sloping surface 33 located outside the first sloping surface. According to fig.
  • the second sloping surface 33 has a shape and an inclination ⁇ that makes the force needed for the reconnection less than the force needed for release of the connecting element 9. Accordingly, the first sloping surface 31 has an inclination ⁇ that is greater than ⁇ relatively to the direction of translation between the engagement device 11 and the holder element 13.
  • the inclination ⁇ and ⁇ of said sloping surfaces 31, 33 should within the context of this application mean, any surface with a curved, inclined or divergent extension in relation to the direction of translation between the engagement device and the holder element.
  • the engagement device 11 preferably has an symmetrical form that allows translation in both directions perpendicular to the plane defined by the flexible door screen 5 in its closed position.
  • the engagement device 11 has two paths 29 at each side enabling guiding of the holder element rod bars 25 in two directions . If the lower bar 7 is exposed to an substantially horizontal impact, the lower bar 7, and hence the holder element 13, tends to translate relative to the engagement device 11. The translation of the holder element 13 in relation to the engagement device 11 is achieved by the way of guiding the holder element rod members 25 along each corresponding path 29 of the engagement device 11, from the engaged position towards a disengaged position. The guiding of the rod members 25 along each path 29 of the engagement device 11 is established by arranging the rod members 25 in a resilient manner. In the preferred embodiment according to figs. 6-8, a resilient effect is achieved by attaching the rod members 25 between two support elements 35, 37.
  • the lower bar 7 comprises a guiding element 39 which is formed to include the holder element 13.
  • the guiding element 39 forces the holder element rod members 25 to move in a substantially vertical direction, but not in a horizontal direction.
  • the rod members 25 translate along the sloping surfaces 31, 33 of the engagement device 11 during excitation of an impact force .
  • the distance between the support elements is variable in the longitudinal direction of the lower bar 7, in order to adjust the protruding length of the rod members 25, wherein the stiffness of the resilient effect may be set to a predetermined threshold value.
  • the support element 35 closest to the end portion of the lower bar 7 is arranged slidable along the rod members 25. Further, the adjustment of the support element 35 closest to the end portion of the lower bar 7 is operated by a rotatable threaded rod 41 which is arranged in threaded engagement with said support element 35. A first end of the threaded rod 41 is attached in a freely rotatable way, for instance by locking washers, to the support element 37 furthest away from the end portion of the lower bar 7.
  • the distance between the two support elements 35, 37 is adjusted by rotating the threaded rod 41, which second end being accessible through a hole in the end portion of the lower bar 7 (not shown) .
  • the second end of the threaded rod is preferably provided with an interface adapted for a conventional tool, such as a hex socket wrench or the like.
  • the position of the support element 35 closest to the end portion of the lower bar 7 is measurable through a hole provided in the end surface of the lower bar 7 (not shown) .
  • the resilient stiffness of the holder element 13 may be determined.
  • a holder element 13 threshold may be set to a predetermined value corresponding to a force needed for the release of the lower bar 7 from the operatively connection to the guides 3.
  • the position of the support element 35 can be determined in several ways, for instance the lower bar 7 may be provided with a direct visual access to the support element 35.
  • the door arrangement 1 is provided with a connecting element 9 reconnecting device 43 attached to the guides 3 at opposite sides of the door way.
  • the reconnecting device 43 is formed as a guide with an enlarged funnel shaped entrance portion 45.
  • the connecting element 9 passes through the funnel shaped entrance portion 45.
  • the passage through the reconnecting device 43 applies a force that reconnects the connecting element 9.
  • the reconnection of the holder element 13 and the engagement device 11 is achieved by displacement of the holder element rod bars 25 in a substantially vertical direction.
  • the holder element rod members 25 is initially guided along the above mentioned second sloping surface 33 of the engagement device path 29, which second sloping surface 33 serves for separation of the distance between the rod members 25 due to the applied force from the reconnecting device 43 during closing of the door arrangement.
  • the guiding of the holder element 13 along the engagement device 11 allows the rod members 25 to be brought into the connected position, holding the engagement device 11.
  • Fig. lla-llc shows in a schematic way how the holder element 13 and the engagement device 11 is separated by a substantially horizontal translation. According to fig.
  • Fig. 11a shows how the lower bar 7 is exposed to a substantially horizontal impact force, or a substantially horizontal impact component force, for instance due to a accidental collision with a vehicle or the like.
  • the applied impact force may cause a translation between the holder element 13 and the engagement device 11 in a direction substantially perpendicular to the flexible door screen 5.
  • Fig. lib shows the resilient rod members 25 in a vertical expanded position, established by the initial translation between the holder element 13 and the engagement device 11 along the first sloping surface 31 of the recesses 27 of the engagement device 11.
  • Fig. lie shows the holder element 13 and the engagement device 11 in a released state from each other. In the released state the resilient rod members 25 are brought into a neutral position.
  • FIG. 12a-12c shows in a schematic way how the holder element 13 and the engagement device 11 is reconnected after an accidental or intended release of the lower bar 7.
  • the reconnection of the holder element 13 and the engagement device 11 is achieved by the reconnection device 43 during a closing operation of the door arrangement 1, in accordance with the abovementioned.
  • Fig. 12a shows the engagement device 11 and the holder element 13 guided into the reconnection device 43 during the closing operation of the door arrangement 1.
  • Fig. 12b shows the holder element rod members 25 in a vertical expanded position, established by the initial translation between the holder element 13 and the engagement device 11 along the second sloping surface 33.
  • Fig. 12c shows the reconnected position of the engagement device 11 and the holder element 13, wherein the lower bar 7 is operatively reconnected to the guides 3.
  • the reconnection device preferably is located in such a position that the lower bar 7 has reached its upper position when completely passed the funnel shaped entrance portion 45 of the reconnection device 43.
  • a reconnectable link portion 10 is arranged similarly reconnectable during an opening and closing cycle of the roller door arrangement 1.
  • a divided funnel 16 is arranged fixed in proximity to the top of a slit 9 of the door screen 2 when the door is in a closed position.
  • the reconnectable link portion 10 passes therethrough, when the roller door arrangement 1 performs a closing or opening movement, in order to reconnect the slit 9 of the flexible door screen 2.
  • the divided funnel 16 consist of two parts in facing pairs (not shown) .
  • the resilient holder element 13 may be provided in several ways.
  • the holder element 13 may be formed as a spring loaded part that holding the engagement device 11. Such an arrangement may be established by a vertically spring loaded sphere or tap, wherein the resilient effect may be adjusted by setting the spring force.
  • the resilient effect may be established by hinged or flexible spring loaded parts, such as rods holding the engagement device 11 intermediately by means of a clamp force. It is obvious for a person skilled in the art that the location of the engagement device 11 and the holder element 13 may be switched, such as the engagement device 11 being attached to the lower bar 7 and the holder element 13 being attached to the lateral portions 23 of the flexible door screen 5. It shall be noted that the door arrangement 11 according to the invention may be used for either manually operated doors and machinery operated doors.
  • the term "flexible door screen" should be understood to mean, within the context of this invention, any flat element able to form a closure or a separation and able to roll around an axis or to be folded, intended for closing a bay or forming a separating partition.
  • the roller door arrangement 1 comprises a detector 26 and security device 28 for interrupting closing movement when an obstacle is detected. Furthermore, the roller door arrangement 1 comprises a lower bar 7 with a detector 26 for detecting an obstacle and possibly interrupting closing movement. The roller door arrangement 1 comprises a lower bar 7 provided with a lower bar reconnector in proximity to a zone where any slit 9 in the flexible door screen 2 lead.
  • flexible door screen should be understood to mean, within the context of this invention, any flat element able to form a closure or a separation and able to roll around an axis or to be folded, such as an awning, a strip of plastic material, etc., intended for closing a bay, forming a separating partition.
  • waterproof doors comprising a flexible door screen.

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
  • Specific Sealing Or Ventilating Devices For Doors And Windows (AREA)
  • Lock And Its Accessories (AREA)
  • Seal Device For Vehicle (AREA)

Abstract

This invention relates to a roller door arrangement (1) comprising a flexible door screen (5), wound on a winding roller (15) which is mounted rotatably at the door opening, wherein the roller door arrangement (1) is provided with flexible traction members (4) associated with at least one driving device (16) for applying a traction force on the flexible door screen (5), to enable the flexible door screen (5) to be movable between a closed position and an open position. The lateral portions (6) of the flexible door screen (5) are provided with a protruding portion (17) adapted for being guided by a guide (3) and holding the flexible door screen between guides (3). The flexible door screen (5) has at least one slit (19) extending in the longitudinal direction of the flexible door screen (5), provided with a reconnectable link portion (10), said reconnectable link portion (10) being adapted to engage the door screen slit (19) and disengage when exposed to impact exceeding a threshold value.

Description

ROLLER DOOR ARRANGEMENT
Field of the Invention The present invention relates to a roller door arrangement comprising a flexible door screen, wound on a winding roller which is mounted rotatably at the door opening, wherein the roller door arrangement is provided with flexible traction members associated with at least one driving device for applying a traction force on the flexible door screen, to enable the flexible door screen to be movable between a closed position and an open position.
Technical Background There exist in the art various roller door arrangements provided with flexible traction members. US 4,997,022 discloses a roller door provided with one example of a flexible door screen, wound on a winding roller which is mounted rotatably above the door opening. Such door arrangement will provide necessary force to the flexible door screen during opening and closing operations as well as maintain it in a taut condition when closed. These concepts are considered to meet requirements from the industry regarding operability, reliability and robustness. However, demands on particularly industrial door arrangements are increasing. In addition to the above mentioned common requirements there is a need for a door arrangement that will withstand wind loads. Furthermore, it is not unusual that door arrangements, when in use, are exposed to extensive wear and sometimes impact from e.g. vehicles. If a door of any kind is subject to impact there is a risk for downtime due to repairment of the damages and re-installment of the door arrangement. Hence, there is a need for an improved roller door arrangement, provided with flexible traction members, that will withstand wind loads. Furthermore, there is a need for an improved door arrangement of the above described type that can be easily reinstated after impact.
Summary of the Invention One of the main purposes of the present invention is to provide a door arrangement provided with a flexible door screen. These and other objects are achieved by an energy absorption system according to claim 1. Preferred embodiments of the invention are defined in the dependent claims. For this purpose, according to the invention, a roller door arrangement comprising a flexible door screen, wound on a winding roller which is mounted rotatably at the door opening, wherein the roller door arrangement is provided with flexible traction members associated with at least one driving device for applying a traction force on the flexible door screen, to enable the flexible door screen to be movable between a closed position and an open position, the lateral portions of the flexible door screen is provided with a protruding portion adapted for being guided by a guide and holding the flexible door screen between the guides, and that the flexible door screen has at least one slit extending in the longitudinal direction of the flexible door screen, provided with a reconnectable link portion, said reconnectable link portion being adapted to engage the door screen slit and disengage when exposed to impact exceeding a threshold value. The protruding portion in the guide is held thoroughly in place to withstand wind load. The holding capacity of the guide exceeds the impact threshold value. Thus, when the flexible door screen is exposed to impact the door screen will give in at a "soft spot", i.e. the slit, leaving the rest of the door arrangement basically unaffected. By designating a main function to each of the three portions of the door arrangement it will also be easy to serve and repair the door arrangement in case of malfunction for some reason. The protrusions of the lateral edges of the door screen associated to the guides will provide support for external loading, such as wind load. The flexible traction members, associated with a driving device, will provide a pulling force to the door screen in the intended direction of movement of the door screen during opening or closing. The slit is held together by a reconnectable link portion adapted to disengage said slit when the flexible door screen is exposed to a force exceeding a threshold value, such as impact from e.g. a truck. By separating portions with a main function the risk for reduced operability of a function due to malfunction or damage of another portion is significantly reduced. Suitably, the roller door arrangement is provided, at least as seen from one lateral portion and towards the middle of the door, with said protruding portion, said flexible traction member and said reconnectable link portion. This arrangement with different elongated portions separated sideways along the flexible door screen, provides for a robust and simple concept with an advanced behavior. The order of the portions as well as the distinct function of each said portion are considered important for enabling a desired performance. Preferably, both sides of the roller door arrangement are provided, as seen from one lateral portion and towards the middle of the door, with said protruding portion, said flexible traction member and said reconnectable link portion. In addition to the above described advantages with the inventive door arrangement it is realized that the construction of the door arrangement makes it possible to use a profile, extending in the longitudinal direction of the roller door arrangement, to cover said guide, said flexible traction member and said reconnectable link portion of one side of the roller door arrangement, as seen straight towards the flexible door screen. Preferably, a substantially C-shaped profile, extending in the longitudinal direction of the roller door arrangement, is arranged around the lateral portion of the flexible door screen. Hence, by covering the side portions, further protection from the surrounding environment of the functions associated to the elongated portions are accomplished. The remaining, visible part of the flexible door screen can then suitably be substantially free from protrusions, brackets or the like. It is realized that the risk for tools or the like to hook onto the flexible door screen during opening might cause damage to e.g. the roller function, the door screen when wound up. Furthermore, it is beneficial in many industries to use surfaces that are easy to keep clean. Preferably, the reconnectable link portion is a zipper. Alternatively, any of said reconnectable link portions is a reconnectable sealing device comprising a protruding portion for engaging a complementary receiving portion having two lip portions. Although, many options are possible for accomplishing a reconnectable link portion, these are the currently preferred. Advantegeously, a continuous portion comprising a reconnectable link portion or portions are used. Preferably, the link portion is adaptable to the properties of the door screen in order to accomplish smooth operation of the door arrangement. Hence, it is realized that as long as the conditions above are met any type of reconnectable link portion may be used for this purpose . Advantageously, any reconnectable link portion is reconnectable during an opening and closing cycle of the roller door arrangement. Thus, a self-repairing door arrangement is accomplished. Preferably, a divided funnel is arranged fixed in proximity to the top of a slit of the door screen when in a closed position, such that the reconnectable link portion passes therethrough, when the roller door arrangement performs a closing or opening movement, in order to reconnect the slit of the flexible door screen. According to a preferred embodiment the winding roller is integrally rotatably connected to a second drum on which is wound, in contrary direction to the flexible door screen, the flexible traction member, said flexible traction member describing a path from said winding roller around at least one guide roller at the base of the door opening via a tensioning roller to said second drum. Each side of the flexible door screen has a flexible traction member connected thereto and arranged along the longitudinal direction thereof. Preferably, the flexible traction member is a belt. Alternatively, the flexible traction member is a rope, a wire, a cable. Other flexible traction members of various materials may be used as long as they are suitable for transfer a pulling force. Hence, a pulling force is provided to an elongated flexible traction member in the propagating direction of the flexible traction member. This allows for a driving function almost integrated in the door screen which makes the winding of the roller door easy and stable. Furthermore, the roller door arrangement comprises a detector and security device for interrupting closing movement when an obstacle is detected. According to a second preferred embodiment the roller door arrangement comprises a lower bar with a detector for detecting an obstacle and possibly interrupting closing movement. According to an aspect of the invention the roller door arrangement comprises a lower bar provided with a lower bar reconnector in proximity to a zone where any slit in the flexible door screen lead. A preferred embodiment of the invention relates to a roller door arrangement, which comprises at least one flexible door screen movable between a closed position and an open position, and vice versa, and a lower bar arranged at the lower edge of the flexible door screen, wherein end portions of the lower bar are operatively connected to guides, arranged at opposite sides of a door way, by a releasable connecting element, said connecting element comprises an engagement device and a holder element, said engagement device is held resiliently by the holder element for, when exposed to loading exceeding a threshold value, enabling a translation between the engagement device and the holder element, in a direction substantially perpendicular to a plane defined by said flexible door screen in its closed position. The translation between the engagement device and the holder element is such that the end portions of the lower bar is disengaged from the operatively connection with the guides when exposed to a substantially horizontal impact force. The translation is essentially directed in the same direction as the applied impact force, wherein a release of a substantially stiff lower bar being feasible. The use of a substantially stiff lower bar provide for a proper stretching of the flexible door screen. Further, the use of a substantially stiff lower bar provides for a reduced risk of air leakage and unintended release of the flexible door screen due to wind loads . The direction of translation for release of the lower bar also enabling a reconnection of the lower bar in a direction substantially perpendicular to the plane defined by the flexible door screen in its closed position. Hence, such a reconnection is preferably arranged in a self repairing manner, which may save time for service and reduce obstruction of the door arrangement . Suitably, the engagement device comprises at least one path along which the holder element is guided relative to the engagement device during said translation, said path comprises a first sloping surface in order to establish a threshold for release of the holder element and the engagement device. Additionally, the path preferably comprises a second sloping surface outside the first sloping surface, said second sloping surface has an inclination less than an inclination of the first sloping surface in order to establish a threshold for reconnection less than the threshold for release. The inclination of the sloping surfaces should within the context of this application mean, any surface with a curved, inclined or divergent extension in relation to the direction of translation between the engagement device and the holder element. This arrangement, with a first sloping surface providing a threshold for the release of the lower bar and a second sloping surface providing a threshold for reconnection of the lower bar, enabling a simple and robust operatively connection of the lower bar to each one of the guide. The shape of the engagement device, and especially the shape of the sloping surfaces, is considered important for enabling a suitably performance of the release and reconnection of the lower bar. Preferably, the holder element is arranged resiliently movable in a substantially vertical direction. Hence, the vertical movement due to the applied impact force allows for an opening of the holder element, wherein the engagement device is free to translate relatively to the holder element in the preferred direction perpendicular to the door screen. The resilient effect of the holder element may be achieved in several ways, for instance by spring elements, elastic materials or the like. Advantageously, a resilient stiffness for holding the engagement device by the holder element is adjustable. The adjustment of the resilient stiffness enables for setting a predetermined threshold of the force needed for the release of the lower bar. The magnitude of such a predetermined threshold may be varied in order to adapt the release of the lower bar to existing local conditions. Further, it is optional to set the predetermined threshold during assembly of the door arrangement or during installation of door arrangement. Hence, the same design of connecting element may be used for several kinds of door arrangements and for several applications of such a door arrangement. According to a still more preferred embodiment, the holder element has at least one rod member extending in the longitudinal direction of the bottom bar, and overlapping part of the engagement device. The use of a rod member provides for a simple and robust resilient holder element, which comprises few components. The rod member is preferably made of a metal material and in particular a spring steel. Suitably, a protruding length of the rod member beyond a support element is adjustable and hence the resilient stiffness of the protruding length of the rod member is adjusted, by the fact that the support member is movable and securable around the rod member. Further, the resilient holding of the engagement device preferably is arranged to be adjustable between 10-200 kg, preferably 20-170 kg, and in particular 30-150 kg. According to a preferred embodiment, the engagement device is intermediately engaged between two rod members forming part of the holder element. Advantageously, the engagement device and the holder element for reconnection is achieved by a reconnecting device during an opening and/or closing cycle of the door arrangement. Thus, a door arrangement comprising a self repairing reconnection of the lower bar is achieved. Hence, the reconnection of a released lower bar may save time for service and thereby avoid obstructions of the door arrangement. Preferably, said reconnecting device is arranged as a funnel shaped guide portion and provided along said guides . In one embodiment, the lower bar comprises the holder element. Hence, the engagement device is slidably attached to the guide or any intermediate portion between the guide and the lower bar. According to an alternative embodiment, the lower bar comprises the engagement device, wherein the corresponding holder element is associated with the guide. According to an especially preferred embodiment, the door arrangement is a fast acting self repairing roller door arrangement.
Brief Description of the Drawings A currently preferred embodiment of the present invention will now be described in more detail, with reference to the accompanying drawings . Fig. 1 is a schematic perspective view of a door arrangement, in an open position, according to a first embodiment of the invention. Fig. 2 is a partial schematic perspective view from one side of a door arrangement, in an open position, according to a first embodiment of the invention. Fig. 3 is a partial schematic perspective view of a reconnectable link portion, according to one further embodiment of the invention. Fig. 4 is a partial schematic perspective view of a reconnectable link portion, according to one alternative embodiment of the invention. Fig. 5 is a vertical section taken from section V-V in fig 1. Fig. 6 is a partial view in perspective showing a lower bar of the roller door arrangement in a connected state . Fig. 7 is a partial view in perspective showing the lower bar according to fig. 6 in a released state. Fig. 8 is a partial view in perspective showing the lower bar of the roller door arrangement according to fig. 1 in a self reparing state during a closing operation. Fig. 9 shows in a partial view in perspective support elements for adjustable resilient stiffnes of the holder element. Fig. 10 is a side view of the engagement device. Figs, lla-llc shows in a schematically view the release of the lower bar. Figs. 12a-12c shows in a schematically view the recconecction of the lower bar. Fig. 13a is a schematic side view of a driving arrangement of the first embodiment in accordance with fig 2. Fig. 13b is a schematic side view of a driving arrangement according to a second aspect of the arrangement . Fig. 13c is a schematic side view of a driving arrangement according to a third aspect of the door arrangement . Fig. 13d is a schematic side view of a driving arrangement according to a fourth aspect of the door arrangement . Fig. 13e is a schematic side view of a driving arrangement according to a fifth aspect of the door arrangement . Fig. 13f is a schematic side view of a driving arrangement according to a sixth aspect of the door arrangement Detailed Description of Preferred Embodiments A first embodiment of the invention related to the roller door arrangement will be described in more detail in the following with reference to the accompanying drawings . Referring now to figs. 1 and 2, wherein a roller door arrangement 1 comprises a flexible door screen 5, wound on a winding roller 15 which is mounted rotatably at the door opening. The roller door arrangement 1 is provided with flexible traction members 4 associated with at least one driving device 16 for applying a traction force on the flexible door screen 5, to enable the flexible door screen 5 to be movable between a closed position and an open position. The lateral portions 6 of the flexible door screen 5 is provided with a protruding portion 7 adapted for being guided by a guide channel 3 and holding the flexible door screen between the guide channels 3. According to one further embodiment of the invention the door screen 5 is held substantially stretched between the guide channels. The flexible door screen 5 has at least one slit 19 extending in the longitudinal direction of the flexible door screen 5. The slit is provided with a reconnectable link portion 10, said reconnectable link portion 10 being adapted to engage the door screen slit 19 and disengage when exposed to impact exceeding a threshold value. With reference to figs. 2 and 13a the driving function of a first embodiment of the door arrangement will be described. The winding roller 15 is integrally rotatably connected to a second drum 47 on which is wound, in contrary direction to the flexible door screen 5, the flexible traction member 4, said flexible traction member 4 describing a path from said winding roller 15 around at least one guide roller 22 at the base of the door opening via a tensioning roller 24 to said second drum 47. According to a preferred embodiment each side of the flexible door screen has a flexible traction member connected thereto and arranged along the longitudinal direction thereof. The flexible traction member 4 is a belt. With reference to fig. 13b a driving function of a second aspect of the door arrangement will be described. A winding roller 115 is connected to a shaft associated rotatably to a motor forming part of said driving device 16. On said winding roller 115 the flexible door screen 5 is wound. A flexible traction member describes a path from said winding roller 103 around at least one guide roller 122 at the base of the door opening via a tensioning roller 124 to a second winding roller 148 arranged on the same shaft as the winding roller 115 but preferably to an outer side of the door screen. Hence, the path of the flexible traction member is preferably arranged with an angle during at least one part of the path as can be seen from an other direction. The driving device 16 and hence the winding rollers 115, 148 is able to move along with a forward and backward motion. Fig. 13c discloses a third aspect of the driving device of the door arrangement. A winding roller 215 is connected to a shaft associated to a motor forming part of said driving device 16. On said winding roller 215 the flexible door screen 5 is wound. A flexible traction member describes a path from said winding roller 215 around at least one guide roller 222 at the base of the door opening to a second winding roller 248 arranged on the same shaft as the winding roller 215 but preferably to an outer side of the door screen. Hence, the path of the flexible traction member is preferably arranged with an angle during at least one part of the path as can be seen from an other direction. Either of the first and second winding rollers 215, 248 has a drum comprising a spring. Alternatively, the outer winding roller 248 comprises a conical drum making it possible to maintain the flexible traction member in a stretched condition during winding operations. Conveniently, a reversible motor is used as indicated by the arrow. Fig. 13d discloses a fourth aspect of the driving device of the door arrangement. A first winding roller 315 is connected to a first shaft associated to a first motor forming part of said driving device 316. On said first winding roller 315 the flexible door screen 5 is wound. A flexible traction member describes a path from said first winding roller 315 around at least one guide roller 322 at the base of the door opening to a second winding roller 348 arranged on a second shaft driven by a second motor 349 forming part of said driving device 316. In this aspect of the door arrangement an irreversible motor may be used as further illustrated by the arrows. Fig. 13e illustrates a fifth aspect of the driving device of the door arrangement. A winding roller 415 is connected to a shaft associated to a motor forming part of said driving device 16. On said winding roller 415 the flexible door screen 5 is wound. A flexible traction member comprises a weight 448. The flexible traction member describes a path from said winding roller 415. During closing of the door the weight is used as the pulling force for the closing operation. The driving device 16, preferably using an irreversible motor, is used to perform an opening operation. Fig. 13f illustrates a sixth aspect of the driving device of the door arrangement. A winding roller 515 is connected to a shaft associated to a motor forming part of said driving device 16. On said winding roller 515 the flexible door screen 5 is wound. A flexible traction member comprises a spring 550. The flexible traction member describes a path from said winding roller 515. During closing of the door the spring 550 is used as the pulling force for the closing operation. The driving device 16, preferably using an irreversible motor, is used to perform an opening operation. Various principles for performing a secure and safe operation of the door arrangement have been illustrated in fig 13a-13f. Furthermore, a secure and safe operation is accomplished with any aspect of the above disclosed door arrangements using any suggested path of the flexible traction member on both sides of the door. Reference is being made to fig 5 wherein the roller door arrangement 1 according to a preferred embodiment is provided, as seen from one lateral portion and towards the middle of the door, with said protruding portion 17, said flexible traction member 4 and said reconnectable link portion 10. Both sides of the roller door arrangement 1 are provided, as seen from one lateral portion and towards the middle of the door, with said protruding portion 17, said flexible traction member 4 and said reconnectable link portion 10. A profile 2, extending in the longitudinal direction of the roller door arrangement 1, is arranged to cover said guide channel 3, said flexible traction member 4 and said reconnectable link portion 10 of one side of the roller door arrangement 1, as seen straight towards the flexible door screen 2. According to a further embodiment disclosed in fig 3 a reconnectable link portion 10 is a zipper 12. The protruding portion 17 may also be accomplished by using part of a zipper. The zipper is attached to the flexible screen in a conventional manner. According to an alternative embodiment disclosed in< fig 4 a reconnectable link portion 10 is a reconnectable sealing device comprising a protruding portion 17 for engaging a complementary receiving portion 18 having two lip portions.
The door arrangement 1 according to the embodiment shown in figs. 6-8 has at least one slit 19 in the longitudinal direction of the flexible door screen 5. The slit 19 is provided with a reconnectable portion, wherein said reconnectable portion being adapted to engage the door screen slit 19 and disengage when exposed to impact exceeding a threshold value. In an especially preferred embodiment comprises the reconnectable portion a zipper. The reconnectable portion is arranged reconnectable during an opening and closing cycle of the roller door arrangement 1. In an alternative embodiment, not shown, the flexible door screen may be provided without the slit 19. Furthermore, the lateral end portions of the flexible door screen either may be guided in the guides or may be free from the guides. According to the preferred embodiment of figs. 6-8, the lower 7 bar is operatively associated with the guides 3 in a releasable manner. The lower bar 7 is connected to the guides 3 by an intermediate element 21 attached to a lower part of a lateral portion 23 of the flexible door screen 5. In figs. 6-8, the intermediate element 21 is formed as a metal plate, wherein one edge of the metal plate is provided with a protruding portion guided in the guide 3. The intermediate element 21 is preferably pivotable engaged by the corresponding lateral portion 23 of the flexible door screen 5. In the preferred embodiment according to figs. 6-8, the engagement device 11 is attached to the intermediate element 21 and the holder element 13 is attached to the lower bar 7. The holder element 13 comprises two resilient rod members 25 extending in the longitudinal direction of the lower bar 7. The engagement device 11 is in a preferred embodiment formed as one piece comprising recesses 27 arranged at opposite sides, for receiving the holder element rod members 25. Each one of the recesses 27 protrudes in the longitudinal direction of the lower bar 7 and forms part of a path 29 for guiding the rod members 25 during translation relatively to the engagement device 11 in a direction substantially perpendicular to a plane defined by the flexible door screen 5 in its closed position. The path 29 comprises a first sloping surface 31 closest to the center of the engagement device 11 and a second sloping surface 33 located outside the first sloping surface. According to fig. 10, the second sloping surface 33 has a shape and an inclination β that makes the force needed for the reconnection less than the force needed for release of the connecting element 9. Accordingly, the first sloping surface 31 has an inclination α that is greater than β relatively to the direction of translation between the engagement device 11 and the holder element 13. The inclination α and β of said sloping surfaces 31, 33 should within the context of this application mean, any surface with a curved, inclined or divergent extension in relation to the direction of translation between the engagement device and the holder element. Further, the engagement device 11 preferably has an symmetrical form that allows translation in both directions perpendicular to the plane defined by the flexible door screen 5 in its closed position. Thus, the engagement device 11 has two paths 29 at each side enabling guiding of the holder element rod bars 25 in two directions . If the lower bar 7 is exposed to an substantially horizontal impact, the lower bar 7, and hence the holder element 13, tends to translate relative to the engagement device 11. The translation of the holder element 13 in relation to the engagement device 11 is achieved by the way of guiding the holder element rod members 25 along each corresponding path 29 of the engagement device 11, from the engaged position towards a disengaged position. The guiding of the rod members 25 along each path 29 of the engagement device 11 is established by arranging the rod members 25 in a resilient manner. In the preferred embodiment according to figs. 6-8, a resilient effect is achieved by attaching the rod members 25 between two support elements 35, 37. The rod members 25 protrudes beyond the support element 35 located closest to the end portion of the lower bar 7, wherein the length of protrusion gives the stiffness of the resilient effect. In figs. 6-8, the lower bar 7 comprises a guiding element 39 which is formed to include the holder element 13. When an impact force is applied to the lower bar, the guiding element 39 forces the holder element rod members 25 to move in a substantially vertical direction, but not in a horizontal direction. Thereby, the rod members 25 translate along the sloping surfaces 31, 33 of the engagement device 11 during excitation of an impact force . In a preferred embodiment according to fig. 9, the distance between the support elements is variable in the longitudinal direction of the lower bar 7, in order to adjust the protruding length of the rod members 25, wherein the stiffness of the resilient effect may be set to a predetermined threshold value. The support element 35 closest to the end portion of the lower bar 7 is arranged slidable along the rod members 25. Further, the adjustment of the support element 35 closest to the end portion of the lower bar 7 is operated by a rotatable threaded rod 41 which is arranged in threaded engagement with said support element 35. A first end of the threaded rod 41 is attached in a freely rotatable way, for instance by locking washers, to the support element 37 furthest away from the end portion of the lower bar 7. Thus, the distance between the two support elements 35, 37 is adjusted by rotating the threaded rod 41, which second end being accessible through a hole in the end portion of the lower bar 7 (not shown) . The second end of the threaded rod is preferably provided with an interface adapted for a conventional tool, such as a hex socket wrench or the like. The position of the support element 35 closest to the end portion of the lower bar 7 is measurable through a hole provided in the end surface of the lower bar 7 (not shown) . By measuring the position of said support member 35 the resilient stiffness of the holder element 13 may be determined. Thereby, a holder element 13 threshold may be set to a predetermined value corresponding to a force needed for the release of the lower bar 7 from the operatively connection to the guides 3. It is obvious for a person skilled in the art that the position of the support element 35 can be determined in several ways, for instance the lower bar 7 may be provided with a direct visual access to the support element 35. In the embodiment according to fig. 8, the door arrangement 1 is provided with a connecting element 9 reconnecting device 43 attached to the guides 3 at opposite sides of the door way. The reconnecting device 43 is formed as a guide with an enlarged funnel shaped entrance portion 45. When the door arrangement 1 is moved from its closed position towards the open position, the connecting element 9 passes through the funnel shaped entrance portion 45. In the case where the holder element 13 and the engagement device 11 is released from each other, the passage through the reconnecting device 43 applies a force that reconnects the connecting element 9. The reconnection of the holder element 13 and the engagement device 11 is achieved by displacement of the holder element rod bars 25 in a substantially vertical direction. The holder element rod members 25 is initially guided along the above mentioned second sloping surface 33 of the engagement device path 29, which second sloping surface 33 serves for separation of the distance between the rod members 25 due to the applied force from the reconnecting device 43 during closing of the door arrangement. The guiding of the holder element 13 along the engagement device 11 allows the rod members 25 to be brought into the connected position, holding the engagement device 11. Fig. lla-llc shows in a schematic way how the holder element 13 and the engagement device 11 is separated by a substantially horizontal translation. According to fig. 11a it is shown how the lower bar 7 is exposed to a substantially horizontal impact force, or a substantially horizontal impact component force, for instance due to a accidental collision with a vehicle or the like. The applied impact force may cause a translation between the holder element 13 and the engagement device 11 in a direction substantially perpendicular to the flexible door screen 5. Fig. lib shows the resilient rod members 25 in a vertical expanded position, established by the initial translation between the holder element 13 and the engagement device 11 along the first sloping surface 31 of the recesses 27 of the engagement device 11. Fig. lie shows the holder element 13 and the engagement device 11 in a released state from each other. In the released state the resilient rod members 25 are brought into a neutral position. Figs. 12a-12c shows in a schematic way how the holder element 13 and the engagement device 11 is reconnected after an accidental or intended release of the lower bar 7. The reconnection of the holder element 13 and the engagement device 11 is achieved by the reconnection device 43 during a closing operation of the door arrangement 1, in accordance with the abovementioned. Fig. 12a shows the engagement device 11 and the holder element 13 guided into the reconnection device 43 during the closing operation of the door arrangement 1. When the engagement device 11 and the holder element 13 are entering the reconnection device 43, a force is applied to the lower bar 7, and hence the holder element 13, by the funnel shaped entrance portion 45 of the reconnecting device 43. The engagement device 11 is supported by the guide 3 in order to establish a reacting force. The force applied may cause a displacement of the holder element rod members 25 in a substantially vertical direction. Hence, the engagement device 11 is lead towards an intermediate position between the rod members 25 by further closing of the door arrangement 1. Fig. 12b shows the holder element rod members 25 in a vertical expanded position, established by the initial translation between the holder element 13 and the engagement device 11 along the second sloping surface 33. Fig. 12c shows the reconnected position of the engagement device 11 and the holder element 13, wherein the lower bar 7 is operatively reconnected to the guides 3. Further, the reconnection device preferably is located in such a position that the lower bar 7 has reached its upper position when completely passed the funnel shaped entrance portion 45 of the reconnection device 43. A reconnectable link portion 10 is arranged similarly reconnectable during an opening and closing cycle of the roller door arrangement 1. A divided funnel 16 is arranged fixed in proximity to the top of a slit 9 of the door screen 2 when the door is in a closed position. The reconnectable link portion 10 passes therethrough, when the roller door arrangement 1 performs a closing or opening movement, in order to reconnect the slit 9 of the flexible door screen 2. Preferably, the divided funnel 16 consist of two parts in facing pairs (not shown) . In additional embodiments, the resilient holder element 13 may be provided in several ways. For instance the holder element 13 may be formed as a spring loaded part that holding the engagement device 11. Such an arrangement may be established by a vertically spring loaded sphere or tap, wherein the resilient effect may be adjusted by setting the spring force. Further, the resilient effect may be established by hinged or flexible spring loaded parts, such as rods holding the engagement device 11 intermediately by means of a clamp force. It is obvious for a person skilled in the art that the location of the engagement device 11 and the holder element 13 may be switched, such as the engagement device 11 being attached to the lower bar 7 and the holder element 13 being attached to the lateral portions 23 of the flexible door screen 5. It shall be noted that the door arrangement 11 according to the invention may be used for either manually operated doors and machinery operated doors. The term "flexible door screen" should be understood to mean, within the context of this invention, any flat element able to form a closure or a separation and able to roll around an axis or to be folded, intended for closing a bay or forming a separating partition. The invention shall not be interpret to only include the above described embodiments, but also combinations of the different embodiments forming alternative embodiments. The roller door arrangement 1 comprises a detector 26 and security device 28 for interrupting closing movement when an obstacle is detected. Furthermore, the roller door arrangement 1 comprises a lower bar 7 with a detector 26 for detecting an obstacle and possibly interrupting closing movement. The roller door arrangement 1 comprises a lower bar 7 provided with a lower bar reconnector in proximity to a zone where any slit 9 in the flexible door screen 2 lead. The term "flexible door screen" should be understood to mean, within the context of this invention, any flat element able to form a closure or a separation and able to roll around an axis or to be folded, such as an awning, a strip of plastic material, etc., intended for closing a bay, forming a separating partition. In this respect it should be noted that, according to the invention, a distinct preference is given to waterproof doors comprising a flexible door screen.

Claims

1. A roller door arrangement (1) comprising a flexible door screen (5) , wound on a winding roller (15) which is mounted rotatably at the door opening, wherein the roller door arrangement (1) is provided with flexible traction members (4) associated with at least one driving device (16) for applying a traction force on the flexible door screen (5) , to enable the flexible door screen (5) to be movable between a closed position and an open position, characterised in that the lateral portions (6) of the flexible door screen (5) are provided with a protruding portion (17) adapted for being guided by a guide (3) and holding the flexible door screen between guides (3) , and that the flexible door screen (5) has at least one slit (19) extending in the longitudinal direction of the flexible door screen (5) , provided with a reconnectable link portion (10) , said reconnectable link portion (10) being adapted to engage the door screen slit (19) and disengage when exposed to impact exceeding a threshold value .
2. The roller door arrangement (1) according to claim 1, wherein the roller door arrangement (1) is provided, as seen from one lateral portion and towards the middle of the door, with said protruding portion (17), said flexible traction member (4) and said reconnectable link portion (10) .
3. The roller door arrangement (1) according to claim 1, wherein both sides of the roller door arrangement (1) are provided, as seen from one lateral portion and towards the middle of the door, with said protruding portion (17), said flexible traction member (4) and said reconnectable link portion (10) .
4. The roller door arrangement (1) according to any one of claims 1-3, wherein a profile (2), extending in the longitudinal direction of the roller door arrangement (1), is arranged to cover said guide (3), said flexible traction member (4) and said reconnectable link portion (10) of one side of the roller door arrangement (1) , as seen straight towards the flexible door screen (5) .
5. The roller door arrangement (1) according to any one of claims 1-4, wherein a substantially C-shaped profile (2'), extending in the longitudinal direction of the roller door arrangement (1), is arranged around the lateral portion (6) of the flexible door screen (5).
6. The roller door arrangement (1) according to any one of claims 1-5, wherein any one of said reconnectable link portions (10) is a zipper (12) .
7. The roller door arrangement (1) according to any one of claims 1-5, wherein any one of said reconnectable link portions (10) is a reconnectable sealing device comprising a protruding portion (14) for engaging a complementary receiving portion (18) having two lip portions .
8. The roller door arrangement (1) according to any one of claims 1-7, wherein any reconnectable link portion (10) is reconnectable during an opening and closing cycle of the roller door arrangement (1) .
9. The roller door arrangement (1) according to any one of claims 1-8, wherein a divided funnel (45) is arranged fixed in proximity to the top of a slit (19) of the flexible door screen (5) when in a closed position, such that the reconnectable link portion (10) passes therethrough, when the roller door arrangement (1) performs a closing or opening movement, in order to reconnect the slit (19) of the flexible door screen (5) .
10. The roller door arrangement (1) according to any one of claims 1-9, wherein said flexible traction member (4) in its propagating direction transfers a pulling force from the driving device (16) .
11. The roller door arrangement (1) according to any one of claims 1-10, wherein each side of the flexible door screen (5) has a flexible traction member (4) connected thereto and arranged along the longitudinal direction thereof.
12. The roller door arrangement (1) according to any one of claims 1-11, wherein the flexible traction member (4) is a belt.
13. The roller door arrangement (1) according to any one of claims 1-11, wherein the flexible traction member (4) is a rope.
14. The roller door arrangement (1) according to any one of claims 1-13, wherein the roller door arrangement (1) comprises a detector (26) and security device (28) for interrupting closing movement when an obstacle is detected.
15. The roller door arrangement (1) according to any one of claims 1-14, wherein the roller door arrangement (1) comprises a lower bar (7) with a detector (26) for detecting an obstacle and possibly interrupting closing movement.
16. The roller door arrangement (1) • according to any one of claims 1-15, wherein the roller door arrangement (1) comprises a lower bar (7) arranged at the lower edge of the flexible door screen (5) , wherein end portions of the lower bar (7) are operatively connected to said guides (3) by a releasable connecting element (9), said connecting element (9) comprises an engagement device (11) and a holder element (13) , said engagement device (11) is held resiliently by the holder element (13) for, when exposed to loading exceeding a threshold value, enabling a translation between the engagement device (11) and the holder element (13) , in a direction substantially perpendicular to a plane defined by said flexible door screen (5) in its closed position.
17. The roller door arrangement (1) according to claim 16, wherein the engagement device (11) comprises at least one path (29) along which the holder element (13) is guided relative to the engagement device (11) during said translation, said path (29) comprises a first sloping surface (31) in order to establish a threshold for release of the holder element (13) and the engagement device (11) .
18. The roller door arrangement (1) according to claim 17, wherein the path (29) comprises a second sloping surface (33) outside the first sloping surface (31) , said second sloping surface (33) has an inclination (β) less than an inclination (α) of the first sloping surface (31) in order to establish a threshold for reconnection less than the threshold for release.
19. The roller door arrangement (1) according to any one of claims 16-18, wherein the holder element (13) is arranged resiliently movable in a substantially vertical direction.
20. The roller door arrangement (1) according to any one of claims 16-19, wherein a resilient stiffness for holding the engagement device (11) by the holder element (13) is adjustable.
21. The roller door arrangement (1) according to any one of claims 16-20, wherein the holder element (13) has at least one rod member (25) extending in the longitudinal direction of the lower bar (7), and overlapping part of the engagement device (11) .
22. The roller door arrangement (1) according to claim 21, wherein a protruding length of the rod member (25) beyond a support element (35) is adjustable and hence the resilient stiffness of the protruding length of the rod member (25) is adjusted, by the fact that the support member (35) is movable and securable around the rod member (25) .
23. The roller door arrangement (1) according to any one of claims 16-22, wherein the resilient holding of the engagement device (11) is arranged to be adjustable between 10-200 kg, preferably 20-170 kg, and in particular 30-150 kg.
24. The roller door arrangement (1) according to any one of claims 16-23, wherein the engagement device (11) is intermediately engaged between two rod members (25) forming part of the holder element (13) .
25. The roller door arrangement (1) according to any one of claims 16-24, wherein a translation between the engagement device (11) and the holder element (13) for reconnection is achieved by a reconnecting device (43) during an opening and/or closing cycle of the door arrangement (1) .
26. Door arrangement (1) according to claim 25, wherein said reconnecting device (43) is arranged as a funnel shaped guide portion and provided along said guides (3) .
27. The roller door arrangement (1) according to any one of claims 16-26, wherein the lower bar (7) comprises the holder element (13) .
28. The roller door arrangement (1) according to any one of claims 16-26, wherein the lower bar (7) comprises the engagement device (11) .
PCT/SE2005/000262 2004-05-14 2005-02-25 Roller door arrangement WO2005111364A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2005800194951A CN1977088B (en) 2004-05-14 2005-02-25 Roller door arrangement

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP04011529A EP1598516B1 (en) 2004-05-14 2004-05-14 Door arrangement
EP04011529.7 2004-05-14

Publications (1)

Publication Number Publication Date
WO2005111364A1 true WO2005111364A1 (en) 2005-11-24

Family

ID=34925006

Family Applications (2)

Application Number Title Priority Date Filing Date
PCT/SE2005/000262 WO2005111364A1 (en) 2004-05-14 2005-02-25 Roller door arrangement
PCT/SE2005/000689 WO2005111365A1 (en) 2004-05-14 2005-05-16 Door arrangement

Family Applications After (1)

Application Number Title Priority Date Filing Date
PCT/SE2005/000689 WO2005111365A1 (en) 2004-05-14 2005-05-16 Door arrangement

Country Status (5)

Country Link
EP (1) EP1598516B1 (en)
CN (1) CN1977088B (en)
AT (1) ATE381659T1 (en)
DE (1) DE602004010789T2 (en)
WO (2) WO2005111364A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130042981A1 (en) * 2011-08-19 2013-02-21 Cornell Ironworks Enterprises Assembly for Insulating a Door Curtain

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101368471B (en) * 2007-08-16 2012-05-30 小松电机产业株式会社 Curtain plate type rolling door
CN102364026B (en) * 2011-10-29 2013-06-19 无锡捷阳节能科技有限公司 Automatically-repairable combination structure of guide rail and sliding block of quick rolling door
DE102017105514A1 (en) * 2017-03-15 2018-09-20 Fischer Automotive Systems Gmbh & Co. Kg roller blind
DK3545158T3 (en) * 2017-05-31 2021-01-11 Seuster Kg Rolling gate

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020117271A1 (en) * 1996-05-28 2002-08-29 Rite-Hite Corporation Release mechanism for industrial doors
WO2003106805A1 (en) * 2002-06-15 2003-12-24 Poscon Corporation Apparatus for opening and shutting a flexible sheet

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4453584A (en) * 1981-05-22 1984-06-12 Steele Richard S Sealing system for movable insulation
US5139074A (en) 1991-04-03 1992-08-18 Kelley Company Inc. Industrial door having flexible and releasable beam
CA2210283C (en) * 1997-07-11 2003-01-07 M & I Door Systems Limited Roll-up door with low friction edges
BE1014506A3 (en) * 2001-12-03 2003-11-04 Dynaco Internat Device with re-introduction component element.
CN2527693Y (en) * 2002-04-04 2002-12-25 上海森林特种钢门有限公司 Rolling guide rail lifting device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020117271A1 (en) * 1996-05-28 2002-08-29 Rite-Hite Corporation Release mechanism for industrial doors
WO2003106805A1 (en) * 2002-06-15 2003-12-24 Poscon Corporation Apparatus for opening and shutting a flexible sheet

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130042981A1 (en) * 2011-08-19 2013-02-21 Cornell Ironworks Enterprises Assembly for Insulating a Door Curtain
US9752382B2 (en) 2011-08-19 2017-09-05 Cornell Ironworks Enterprises Assembly for insulating a door curtain

Also Published As

Publication number Publication date
CN1977088B (en) 2010-12-15
CN1977088A (en) 2007-06-06
EP1598516A1 (en) 2005-11-23
ATE381659T1 (en) 2008-01-15
DE602004010789T2 (en) 2008-12-04
DE602004010789D1 (en) 2008-01-31
WO2005111365A1 (en) 2005-11-24
EP1598516B1 (en) 2007-12-19

Similar Documents

Publication Publication Date Title
US5222541A (en) Industrial door having releasable beam and tension bracket retention mechanism
CA2897401C (en) Ninety degree wind lock with break-away capability and door panel and door assembly utilizing the same
AU2007229509B2 (en) Closure device with a curtain having flexible lateral edges
US7996964B2 (en) Buckle device
US8104129B2 (en) Open and close apparatus for a shelter of a boarding bridge
JP2013532242A (en) Waterproof barrier
CN110883604B (en) Covering device and baffle type cover
WO2005111364A1 (en) Roller door arrangement
KR20130018472A (en) Sheet shutter
US20130214561A1 (en) Damping stop for hinge, especially for vehicle door hinge
EP1510647B1 (en) Roller door arrangement
US20040245755A1 (en) Shutter type guard apparatus for construction machine
AU2003246432B2 (en) Rolling door
JP5442663B2 (en) Seat shutter
US20030041980A1 (en) Cable tensioner for a door
KR101643088B1 (en) Cover apparatus for cargo box of freight car
KR20100065583A (en) Apparatus for buffering end wall of flat rack container without electrical power and the flat rack container
JP5940957B2 (en) Elevator safety fence
KR101206255B1 (en) Door type cable guiding device and tendon controlled mobile platform system with it
ITMI990780A1 (en) ROPE GUIDE FOR A WINCH
CN109153318A (en) For the open roof construction of vehicle and in the shutter arrangement wherein used
JP5442667B2 (en) Seat shutter
KR200368260Y1 (en) Roof device capable of both direction open and shut
JPH06336886A (en) Automatic opening/closing device for door body and thin belt material thereof
CA3030892C (en) System and roll-up door for maintaining a downward tension on a roll-up door curtain

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SM SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LT LU MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
DPEN Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed from 20040101)
NENP Non-entry into the national phase

Ref country code: DE

WWW Wipo information: withdrawn in national office

Country of ref document: DE

WWE Wipo information: entry into national phase

Ref document number: 200580019495.1

Country of ref document: CN

122 Ep: pct application non-entry in european phase