EP0295223B1 - Rolltor - Google Patents

Rolltor Download PDF

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Publication number
EP0295223B1
EP0295223B1 EP88830253A EP88830253A EP0295223B1 EP 0295223 B1 EP0295223 B1 EP 0295223B1 EP 88830253 A EP88830253 A EP 88830253A EP 88830253 A EP88830253 A EP 88830253A EP 0295223 B1 EP0295223 B1 EP 0295223B1
Authority
EP
European Patent Office
Prior art keywords
panel
spring
balancing
bracket
cross member
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.)
Expired - Lifetime
Application number
EP88830253A
Other languages
English (en)
French (fr)
Other versions
EP0295223A1 (de
Inventor
Umberto Luciano
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.)
LUCIANO Srl
Original Assignee
LUCIANO Srl
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 LUCIANO Srl filed Critical LUCIANO Srl
Priority to AT88830253T priority Critical patent/ATE67272T1/de
Publication of EP0295223A1 publication Critical patent/EP0295223A1/de
Application granted granted Critical
Publication of EP0295223B1 publication Critical patent/EP0295223B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • E06B9/68—Operating devices or mechanisms, e.g. with electric drive
    • 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
    • E06B9/62—Counterweighting arrangements

Definitions

  • the present invention relates to a roller door including a flexible panel provided with a cross member at its free end, a roller onto which the panel is wound, two vertical guide frames provided with facing vertical slots in which the ends of the cross member are engaged, means for balancing the weight of the panel, and means for keeping the panel under tension vertically.
  • a roller door of the above type is known from the published European application EP-A-144,893 and includes balancing torsion springs housed in the upper horizontal roller onto which the panel is wound and tensioning torsion springs arranged at the sides of the roller, which tension the panel by means of lateral vertical cables and pulleys fixed to the ground.
  • a roller door of the above type is known from the patent US-A-3,878,879 and uses, on each of the two sides of the door, a closed system constituted by a cable which connects the free end of the panel to a roller fast with the roller onto which the panel is wound and passes over two fixed pulleys and a vertically movable pulley subject to the action of a counterweight.
  • This closed system simultaneously fulfils the functions of balancing the weight of the panel and of tensioning the panel itself.
  • EP-A-125.217 describes a variant of the system known from the aforementioned patent US-A-3,878,879, in which the counterweight acting on the vertically movable pulley is replaced by a helical spring working under tension.
  • a belt or cable which passes over two lower fixed return pulleys, over the upper surface of a pulley mounted rotatably on an upper fixed bracket and over the under surface of a vertically movable pulley, rotatably mounted on a bracket which is connected to a fixed point at the base of the frame by a tensioning spring, the opposite end of each of said belts or cables being wound onto a disc which is mounted on the same shaft as the roll-up roller.
  • the force of said tensioning spring is divided into two vertical components, one of which is transferred to the panel as a downwardly directed force which fulfills the function of tensioning the panel and the other of which is transferred to the panel as an upwardly directed force which fulfills the function of balancing the weight of the panel itself.
  • the subject of the present invention is a roller door of the type specified above having the features claimed in claim 1.
  • the flexible panel for example of plastics material, of a roller door is indicated 1.
  • the panel winds onto a winding roller 2 whose shaft 3 is supported rotatably in the upper structure of the door, indicated 4.
  • the shaft 3 is rotated by an electric motor M through a transmission 5.
  • An electromagnetic brake 6 associated with the motor M is released when the motor is supplied and engaged under the action of a spring when there is no supply to the motor.
  • a lever control (not illustrated) enables the above brake to be released in an emergency, to enable free rotation of the shaft 3.
  • the free end of the panel 1 carries a cross member 7 whose ends are engaged in guide slots formed in two vertical frames 8 which support the upper structure 4.
  • a rubber protective device 9 Associated with the cross member 7 is a rubber protective device 9 serving to reverse the sense of rotation of the motor M in the event of the cross member encountering an obstacle during the closing of the door.
  • a cable 10 which passes, within the respective frame 8, over two lower return pulleys 11, 12 rotatably supported at the base of each vertical frame 8, and which is wound, in the sense opposite the sense of the winding of the panel 1, onto an upper vertically movable pulley 13 connected with the interposition of a helical tensioning spring 14 working under tension, to a fixed point 15 at the base of the frame.
  • the pulley 13 is supported rotatably by a bracket 16 supported by a belt 17 whose folded end is gripped by a clamp 18.
  • the belt 17 (which could also be replaced by a cable) is wound onto the shaft 3 of the roller 2 in the sense opposite the sense of winding of the panel.
  • the belt 17 could be wound onto a pulley fixed to the shaft.
  • the bracket 16 is connected at its lower end to a helical balancing spring 19 working under tension, the lower end of which is connected to a fixed point 20 at the base of the frame 8.
  • the spring 19 is preferably dimensioned so as to exert on the shaft of the roller 2 a moment greater than that exerted by the weight of the panel 1 in a clockwise sense when the door is in the closed position.
  • the device described above enables a correct and constant balancing of the weight of the panel 1 and its cross member 7 to be achieved as a result of the variations in the diameters of winding of the panel 1 on the roller 2 and of the belt or cable 17 on the shaft 3 which occur as the door moves from the open position to the closed position. Moreover, it enables the desired tensioning of the panel to be achieved when the door is closed.
  • the lower end of the bracket 16 carries a cross member 20a inserted between the upper coils of the spring 19.
  • a possible counterweight fixed to the base of the bracket 16 and housed within the balancing spring 19 is indicated 21.
  • the above-described device for connection between the bracket 16 and the balancing spring 19 enables the tension of the spring to be adjusted easily from the ground. In fact, after the disengagement of the clamp 18 to detach the belt 17 from the bracket 16, it is only necessary to rotate the bracket to vary its axial position relative to the spring 19.
  • the tension of the tensioning spring 14 can also be adjusted easily with the use of a known axially adjustable attachment device for connecting this spring to the cable 10.
  • the above-described system enables extremely quick, simple and effortless manual operation in an emergency; in fact, it suffices manually to release the brake coupled to the electric motor M, since the closed door opens automatically up to its maximum height due to the prevalence of the moment exerted by the spring 19 over the moment exerted by the weight of the panel 1.
  • the device for adjusting the tension in the balancing spring 19 differs from that described with reference to Figure 5 in that a cross member 20a provided with two holes 22 at its ends, through which the upper coil of the spring 19 is passed, is fixed to the base of the bracket 16.
  • the adjustment of the tension of the spring 19 is also achieved by rotation of the cross member 20a relative to the spring after the removal of the clamp 18, which must be fixed again after adjustment.
  • the variant illustrated in Figures 7 and 8 differs from that illustrated in Figures 3 and 4 in that the cable 10 passes over a single return pulley 23 at the bottom and is wound onto the movable pulley 16 in the sense opposite the sense of winding of the panel.
  • the tensioning spring 14 housed in each of the two vertical structures 8 is situated on the side of the panel 1 opposite the balancing spring 19, instead of being between the panel 1 and the spring 19 as in the embodiment described above.
  • the bracket 116 is in the form of a hollow body comprising two containers 25 which are side by side and support the pulley 13 between them.
  • the lower parts of the containers 25 contain lead which is introduced by casting and forms the counterweight 24.
  • Loose metallic material can be added to the upper parts of the containers 25 to adjust the balancing.

Landscapes

  • Structural Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Power-Operated Mechanisms For Wings (AREA)
  • Power Steering Mechanism (AREA)
  • Lock And Its Accessories (AREA)
  • Gates (AREA)
  • Closing And Opening Devices For Wings, And Checks For Wings (AREA)
  • Support Devices For Sliding Doors (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
  • Window Of Vehicle (AREA)

Claims (10)

1. Ein Rolltor, das ein flexibles Paneel (1) enthält, an dessem freien Ende ein Querträger (7) angeordnet ist, eine Rolle (2) auf welche das Paneel gewickelt ist, zwei vertikale Führungsrahmen (8), versehen mit zwei gegenüberliegenden vertikalen Schlitzen, in welche die Enden des Querträgers (7) eingreifen, Vorrichtungen (19, 24), die das Gewicht des Paneels ausgleichen und Vorrichtungen (14), die das Paneel vertikal unter Spannung halten, wobei mit jedem der Enden des Querträgers (7) ein erstes Seil (10) verbunden ist, das zumindest über eine darunter angebrachte Umlenkrolle (11, 12; 23), die drehbar am unteren Ende des entsprechenden Vertikalrahmens (8) montiert ist und über die obere Oberfläche einer Seilscheibe (13), die drehbar an einem Flansch (16; 116) montiert ist, verläuft, dadurch gekennzeichnet, daß besagter Flansch vertikal bewegbar ist und von einem zweiten Seil oder flachen Gürtel (17), der auf das Paneel (1) gewickelt ist, gehalten wird; das jeweils andere Ende der besagten ersten Kabel (19) ist verbunden mit einem Fixpunkt (15) am unteren Teil des Rahmens (8) mittels einer Spannfeder (14), die unter Zug wirkt und dazu dient, das Paneel (1) unter Spannung zu halten, der Flansch (16, 116) ist Gegenstand der Wirkung der Ausgleichsvorrichtungen (19, 24), welche von unten eine abwärtsgerichtete Kraft darauf ausüben, die dazu dient, das Gewicht des Paneels (1) auszugleichen.
2. Ein Tor nach Anspruch 1, dadurch gekennzeichnet, daß die Ausgleichsvorrichtungen eine Ausgleichsfeder (19) umfassen, welche unter Zug arbeitet, und den Flansch (16) mit einem Fixpunkt (20) verbindet, der am unteren Teil des jeweiligen Vertikalrahmens (8) liegt.
3. Ein Tor nach Anspruch 2, dadurch gekennzeichnet, daß die Wirkung der Ausgleichsfeder (19) durch ein Gegengewicht (21) unterstützt wird, das am unteren Ende des Flansches (16) angebracht ist.
4. Ein Tor nach Anspruch 2, dadurch gekennzeichnet, daß die Ausgleichsfeder eine schraubenförmige Zugfeder (19) ist, und daß der Flansch (16) an seinem unteren Ende mit einem Querträger(20a) versehen ist, der zwischen die oberste Windung der Feder (19) so eingesetzt ist, daß das Einstellen der Spannung der Feder (19) durch Drehen des Querträgers (20a) relativ zur Feder (19) erreicht wird.
5. Ein Tor nach Anspruch 2, dadurch gekennzeichnet, daß die Ausgleichsfeder eine schraubenförmige Spannfeder ist (19), und daß der Flansch (16) an seinem unteren Ende mit einem Querträger (20a) versehen ist, der zwei Endlöcher (22) mit horizontalen Achsen hat, durch welche die obere Windung der Feder (19) so verläuft, daß das Einstellen der Spannung der Feder (19) durch Drehung des Querträgers (20a) relativ zur Feder erreicht wird.
6. Ein Tor nach Anspruch 2, dadurch gekennzeichnet, daß jedes mit dem Querträger (7) des Paneels (1) verbundene Seil (10) über zwei tiefer befestigte Umlenkrollen (11, 12) verläuft und im gleichen Wicklungssinn wie das Paneel (1) so auf die Losrolle (13) gewickelt ist, daß die Spannfeder (14) zwischen dem Paneel (1) und der Ausgleichsfeder (19) ist.
7. Ein Tor nach Anspruch 1, dadurch gekennzeichnet, daß jedes mit dem Querträger (7) des Paneels (1) verbundene Seil (10) über eine tiefer befestigte Umlenkrolle (23) verläuft und in einem Sinn, entgegengesetzt zum Wicklungssinn von Paneel (1), so auf die Losrolle (16) gewickelt ist, daß die Spannfeder (14) auf der dem Paneel (1) entgegengesetzten Seite der Ausgleichsfeder (19) angeordnet ist.
8. Ein Tor nach Anspruch 1, dadurch gekennzeichnet, daß:
― die Ausgleichsvorrichtungen (19, 24) so dimensioniert sind, daß sie ein Moment auf den Schaft (3) der Rolle (2) ausüben, das größer ist als das durch das Gewicht des Paneels (1) in den unterschiedlichen Positionen der Tür ausgeübte,
― die Rolle (2), auf welche das Paneel (1) aufgewickelt ist, mit einem Elektromotor (11), der durch eine elektromagnetische Bremse (6) geregelt wird und der mit einer manuellen Steuerung zum Lösen der Bremse ausgestattet ist, die ein automatisches Öffnen des Tors im Notfall unter der Wirkung der Ausgleichsvorrichtungen (19, 24) ermöglicht.
9. Ein Tor nach Anspruch 1, dadurch gekennzeichnet, daß die Ausgleichsvorrichtungen gebildet werden durch ein Gegengewicht (24), das am unteren Ende des vertikal bewegbaren Flansches (116) angebracht ist.
10. Ein Tor nach Anspruch 1, dadurch gekennzeichnet, daß der Flansch (16) die Form eines Hohlkörpers hat, und daß das Gegengewicht (24) durch Ausgießen des unteren Teils des Hohlkörpers mit Blei gebildet wird.
EP88830253A 1987-06-12 1988-06-07 Rolltor Expired - Lifetime EP0295223B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88830253T ATE67272T1 (de) 1987-06-12 1988-06-07 Rolltor.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT8767506A IT1210793B (it) 1987-06-12 1987-06-12 Porta ad arrotolamento
IT6750687 1987-06-12

Publications (2)

Publication Number Publication Date
EP0295223A1 EP0295223A1 (de) 1988-12-14
EP0295223B1 true EP0295223B1 (de) 1991-09-11

Family

ID=11302992

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88830253A Expired - Lifetime EP0295223B1 (de) 1987-06-12 1988-06-07 Rolltor

Country Status (6)

Country Link
EP (1) EP0295223B1 (de)
AT (1) ATE67272T1 (de)
DE (1) DE3864753D1 (de)
ES (1) ES2025814T3 (de)
GR (1) GR3002728T3 (de)
IT (1) IT1210793B (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4005963A1 (de) * 1989-03-03 1990-09-06 Itw Ind Und Werkzeugmaschinen Rolltor
DE10011789A1 (de) * 2000-03-13 2001-09-20 Aktor Ind Gmbh Rolltor mit aufwickelbaren Torblatt
US20040159150A1 (en) 2002-10-18 2004-08-19 Novak Eugene J. Dual-string dynamometer for measuring dental handpiece power at high speed and low torque
US9250160B2 (en) 2013-03-15 2016-02-02 American Dental Association Method and apparatus for characterizing handpieces
CN108533162B (zh) * 2018-05-24 2020-02-21 张集文 一种上下自由开合卷帘

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2543711A (en) * 1947-07-02 1951-02-27 Schultz Abraham Closure operator
FR2181601B1 (de) * 1972-04-24 1974-12-20 Ressorts Francais
AT341177B (de) * 1975-10-13 1978-01-25 Lindpointner Ludwig Rolltor od.dgl.
DE3245009A1 (de) * 1982-12-06 1984-06-14 Adolf Seuster GmbH, 5880 Lüdenscheid Rolltor
SE8300573L (sv) * 1983-02-03 1984-08-04 Nordiskafilt Ab Rullport

Also Published As

Publication number Publication date
EP0295223A1 (de) 1988-12-14
DE3864753D1 (de) 1991-10-17
IT1210793B (it) 1989-09-20
ES2025814T3 (es) 1992-04-01
GR3002728T3 (en) 1993-01-25
ATE67272T1 (de) 1991-09-15
IT8767506A0 (it) 1987-06-12

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