EP0004629B1 - Operating and locking device for roller blinds - Google Patents

Operating and locking device for roller blinds Download PDF

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Publication number
EP0004629B1
EP0004629B1 EP79100913A EP79100913A EP0004629B1 EP 0004629 B1 EP0004629 B1 EP 0004629B1 EP 79100913 A EP79100913 A EP 79100913A EP 79100913 A EP79100913 A EP 79100913A EP 0004629 B1 EP0004629 B1 EP 0004629B1
Authority
EP
European Patent Office
Prior art keywords
hub
movable hub
ball
movable
coupling surface
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
Application number
EP79100913A
Other languages
German (de)
French (fr)
Other versions
EP0004629A1 (en
Inventor
Leopoldo Carducci
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.)
Leopoldo Carducci & C Sas
Original Assignee
Leopoldo Carducci & C Sas
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
Priority claimed from IT2195978A external-priority patent/IT1093465B/en
Priority claimed from IT1980279A external-priority patent/IT1166607B/en
Application filed by Leopoldo Carducci & C Sas filed Critical Leopoldo Carducci & C Sas
Publication of EP0004629A1 publication Critical patent/EP0004629A1/en
Application granted granted Critical
Publication of EP0004629B1 publication Critical patent/EP0004629B1/en
Expired 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
    • E06B9/78—Operating, guiding or securing devices or arrangements for roll-type closures; Spring drums; Tape drums; Counterweighting arrangements therefor for direct manual operation, e.g. by tassels, by handles
    • 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
    • E06B9/80—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling
    • E06B9/82—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling automatic
    • E06B9/84—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling automatic against dropping
    • 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
    • E06B9/80—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling
    • E06B9/82—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling automatic
    • E06B9/90—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling automatic for immobilising the closure member in various chosen positions

Definitions

  • the present invention relates to an actuating and locking device for roller blinds with a fixed part having a first coupling surface and an axially and rotationally movable hub which, when rotating, causes the roller blind to roll up and down, and a second coupling surface which interacts with the first coupling surface which, under the action of an elastic means acting on the movable hub for the purpose of braking the movable hub, is pressed against the first coupling surface, at least one ball being arranged between the movable hub and the axially fixed part, which is provided by a rotatable
  • cam surfaces are pressed into a wedge-shaped narrowing gap between a surface on the axially fixed part and the movable hub until it is in its clamped end position g establishes the rotary connection between the drive part and the movable hub.
  • Such an actuator is already known from French Patent No. 1,529,630. It enables the curtains to be actuated or locked at any point during the rolling or unrolling, the rotational movement and the separation of the braking surfaces being obtained by moving balls on cam surfaces.
  • the present invention has set itself the task of realizing an actuating device for roller blinds, with which a safe coupling and uncoupling of the braking device and a safe coupling of the drive is achieved, so that the curtain is safely blocked by the coupling in any angular position and also a the clutch is immediately disengaged as soon as the curtain is rolled up or down.
  • the braking surfaces can be formed by interacting conical as well as flat or interacting surfaces which are provided with teeth and corresponding catches which are or are not removed during the release or blocking.
  • 1 denotes the hub fixed on the non-rotatable axis 7 and 2 denotes the hub which is axially movable and rotatable on the axis 7 and which together form the coupling group.
  • the actuating ring is designated, which is rotatably guided on the hubs 1 and 2 and has cam surfaces 3a; 4 are the release and locking balls and 5 denotes the compression spring, which is loaded so that it presses the fixed hub 1 and the movable hub 2 together.
  • the end of the spring 5 is fastened with a washer 6 which is fastened to the shaft by a split pin 9.
  • the fixed hub 1 is blocked on the axis 7 and has two conical surfaces, namely a first surface 1 a, on which the balls 4 slide, and a second conical surface 1 b serving as a coupling surface, on which the cooperating conical surface 2 b movable hub 2 supports.
  • the two conical coupling surfaces 1b and 2b are pressed against one another by the action of the spring 5.
  • An open ring 8 is fastened over the hub 2, on which the curtain is rolled up and which is pressed onto the hub 2 and then fastened with a screw.
  • the hub 2 has guideways 2a, in which the balls 4 can slide radially.
  • the number of guideways 2a and cam surfaces 3a corresponds to the number of balls 4.
  • FIGS. 2 and 3 represent the coupled device (blocked curtain) and the uncoupled device (curtain in the actuated state).
  • the spring 5 presses against the movable hub 2, so that the balls 4 slide along the conical surface 1a and are arranged in the cam surface 3a of the actuating ring 3 such that they no longer axially load the hubs 1 and 2.
  • the friction surface 1b of the fixed hub comes into contact with the friction surface 2b of the movable hub 2 on which the curtain is mounted; the braking force they exert holds the curtain in a certain position.
  • the balls 4 are moved by the cams 3a attached to the actuation ring 3 entrained and slide along the conical surface 1a and are pressed radially inward into the wedge gap between the hubs 1 and 2, the hub 2 being retracted against the pressure of the spring 5, so that the two interacting conical friction surfaces 1b and 2b the fixed or movable hub are no longer in contact with each other, but can rotate freely.
  • the balls are arranged in the manner shown in Figure 3.
  • the balls slide in a circular line on the surface 1 a of the hub 1.
  • the spring 5 presses the movable hub 2 into its starting position, the balls 4 running outwards along the conical surface 1a.

Abstract

1. Actuating and fastening device for roller curtains having a stationary part (1) with a first coupling surface (1b) and a hub (2) which is axially movable and rotating with respect to the stationary part and by its rotation causes the winding and unwinding of the roller curtain, respectively, said hub having a second coupling surface (2b) cooperating with the first coupling surface, this second surface being pressed against the first coupling surface under the action of a resilient means (5) operating the movable hub (2) in order to brake it, at least one ball being provided arranged between the movable hub (2) and the axially stationary part (1), said ball being urged in a wedge-like narrowing slit between a surface (1a) provided on the axially stationary part (1) and the movable hub (2) by means of cam surfaces (3a) provided on a driving member (3) whenever the driving member is rotated relative to the movable hub (2), in order to raise the coupling surface (2b), until at its final fastened position said ball causes the rotary connection between the driving member (3) and the movable hub (2), characterized in that the balls (4) are arranged in a radial guideway (2a) provided in the movable hub (2) ; that the wedge-like slit inwardly radially narrows ; that the driving member is a ring (3) covering from the outside the wedge-like slit, which ring has on its inner periphery the cam surface (3a) formed so that, by turning the ring (3) relative to the movable hub (2), it inwardly radially urges the ball (4) in its guideway (2a), axially displacing the movable hub (2) and lifting its second coupling surface (2b) ; that the cam surface (3a) then urges the ball to a final position against a radial stop, so as to clamp it between the cam surface (3a) and one side of the guideway (2a) and transfer the rotary motion from the ring (3) to the movable hub (2) ; and that the wedge-like slit has such an inclination that at the end of the driving torque the ball is radially outwardly moved back under the axial pressure of the resilient means (5) acting on the movable hub (2).

Description

Die vorliegende Erfindung betrifft eine Betätigungs- und Feststellvorrichtung für Rollvorhänge mit einem eine erste Kupplungsfläche aufweisenden feststehenden Teil und einer dazu axial- und drehbeweglichen, bei ihrer Drehung das Auf- bzw. Abrollen des Rollvorhanges bewirkenden Nabe, die eine mit der ersten Kupplungsfläche zusammenwirkende zweite Kupplungsfläche hat, welche unter der Wirkung eines auf die bewegliche Nabe wirkenden elastischen Mittels zum Zweck der Bremsung der beweglichen Nabe gegen die erste Kupplungsfläche gepreßt wird, wobei mindestens eine zwischen der beweglichen Nabe und dem axial festgelegten Teil angeordnete Kugel vorgesehen ist, die durch an einem drehbaren Antriebsteil angebrachte Nockenflächen bei Drehung des Antriebsteils gegenüber der beweglichen Nabe zwecks Abhebens der Kupplungsfläche in einen sich keilförmig verengenden Spalt zwischen einer Fläche am axial festgelegten Teil und der beweglichen Nabe gedrückt wird, bis sie in ihrer eingeklemmten Endstellung die Drehverbindung zwischen dem Antriebsteil und der beweglichen Nabe herstellt.The present invention relates to an actuating and locking device for roller blinds with a fixed part having a first coupling surface and an axially and rotationally movable hub which, when rotating, causes the roller blind to roll up and down, and a second coupling surface which interacts with the first coupling surface which, under the action of an elastic means acting on the movable hub for the purpose of braking the movable hub, is pressed against the first coupling surface, at least one ball being arranged between the movable hub and the axially fixed part, which is provided by a rotatable When the drive part rotates the drive part relative to the movable hub in order to lift off the coupling surface, cam surfaces are pressed into a wedge-shaped narrowing gap between a surface on the axially fixed part and the movable hub until it is in its clamped end position g establishes the rotary connection between the drive part and the movable hub.

Eine derartige Betätigungsvorrichtung ist bereits aus der französischen Patentschrift Nr. 1 529 630 bekannt. Sie ermöglicht die Betätigung der Vorhänge bzw. deren Feststellen an einer beliebigen Stelle während des Aufrollens oder Abrollens, wobei die Drehbewegung und die Trennung der Bremsflächen durch das Verschieben von Kugeln auf Nockenflächen erhalten wird.Such an actuator is already known from French Patent No. 1,529,630. It enables the curtains to be actuated or locked at any point during the rolling or unrolling, the rotational movement and the separation of the braking surfaces being obtained by moving balls on cam surfaces.

Die vorliegende Erfindung hat sich zur Aufgabe gemacht, eine Betätigungsvorrichtung für Rollvorhänge zu verwirklichen, mit der ein sicheres Ein- und Auskuppeln der Bremsvorrichtung und ein sicheres Kuppeln des Antriebs erzielt wird, so daß der Vorhang durch die Kupplung in beliebiger Winkelstellung sicher blockiert und auch ein sofortiges Auskuppeln der Kupplung erreicht wird, sobald der Vorhang auf- oder abgerollt wird.The present invention has set itself the task of realizing an actuating device for roller blinds, with which a safe coupling and uncoupling of the braking device and a safe coupling of the drive is achieved, so that the curtain is safely blocked by the coupling in any angular position and also a the clutch is immediately disengaged as soon as the curtain is rolled up or down.

Ausgehend von der im Oberbegriff des Anspruchs 1 angegebenen Vorrichtung wird diese Aufgabe durch die im Kennzeichen des Anspruchs 1 angegebenen Mittel gelöst.Starting from the device specified in the preamble of claim 1, this object is achieved by the means specified in the characterizing part of claim 1.

Vorteilhafte Weiterbildungen der Erfindung sind aus den abhängigen Ansprüchen 2 bis 7 zu entnehmen.Advantageous developments of the invention can be found in the dependent claims 2 to 7.

Bei jeder erfindungsgemäßen Verwirklichung können die Bremsflächen sowohl von zusammenwirkenden konischen als auch von flachen oder zusammenwirkenden Flächen gebildet sein, die mit Zähnen und entsprechenden Rasten versehen sind, die während des Freigebens oder Blockierens entfernt werden oder nicht.In any implementation according to the invention, the braking surfaces can be formed by interacting conical as well as flat or interacting surfaces which are provided with teeth and corresponding catches which are or are not removed during the release or blocking.

Die Erfindung wird nachstehend ausführlich anhand eines Ausführungsbeispiels, das in den Figuren dargestellt ist, beschrieben. Es zeigen:

  • Fig. 1 eine Schnittansicht der erfindungsgemäßen Vorrichtung; sie entspricht einem Schnitt nach der Linie I-1 in Fig. 2,
  • Fig. 1a eine Schnittansicht eines Teils der in Fig. 1 dargestellten Vorrichtung gemäß einer Variante,
  • Fig. 2 eine Seitenansicht von der Seite der festen Nabe her (von Fig. 1) jedoch unter Fortlassung der festen Nabe,
  • Fig. 3 eine der Fig.2 entsprechende Ansicht, bei der sich jedoch die Kugeln in anderer Funktionsstellung befinden.
The invention is described in detail below using an exemplary embodiment which is illustrated in the figures. Show it:
  • Figure 1 is a sectional view of the device according to the invention. it corresponds to a section along the line I-1 in Fig. 2,
  • 1a is a sectional view of part of the device shown in FIG. 1 according to a variant,
  • 2 is a side view from the side of the fixed hub (from FIG. 1) but omitting the fixed hub,
  • Fig. 3 is a view corresponding to Fig.2, but in which the balls are in a different functional position.

Aus den Figuren 1 bis 3 ist zu entnehmen, daß mit 1 die auf der nicht drehbaren Achse 7 feste Nabe und mit 2 die auf der Achse 7 axial beweglich und drehbar angeordnete Nabe bezeichnet sind, die zusammen die Kupplungsgruppe bilden. Mit 3 ist der Betätigungsring bezeichnet, der drehbar auf den Naben 1 und 2 geführt ist und Nockenflächen 3a aufweist; mit 4 sind die Freigabe- und Feststellkugeln und mit 5 ist die Druckfeder bezeichnet, die so belastet ist, daß sie die feste Nabe 1 und die bewegliche Nabe 2 aneinander drückt. Die Befestigung des Endes der Feder 5 erfolgt mit einer Scheibe 6, die durch einen Splint 9 auf der Welle befestigt ist.It can be seen from FIGS. 1 to 3 that 1 denotes the hub fixed on the non-rotatable axis 7 and 2 denotes the hub which is axially movable and rotatable on the axis 7 and which together form the coupling group. With 3 the actuating ring is designated, which is rotatably guided on the hubs 1 and 2 and has cam surfaces 3a; 4 are the release and locking balls and 5 denotes the compression spring, which is loaded so that it presses the fixed hub 1 and the movable hub 2 together. The end of the spring 5 is fastened with a washer 6 which is fastened to the shaft by a split pin 9.

Die feste Nabe 1 ist auf der Achse 7 blockiert und weist zwei konische Flächen auf und zwar eine erste Fläche 1 a, auf der die Kugeln 4 gleiten, und eine zweite als Kupplungsfläche dienende konische Fläche 1b, auf der sich die zusammenwirkende konische Fläche 2b der beweglichen Nabe 2 aufstützt. Die beiden konischen Kupplungsflächen 1b und 2b werden durch die Wirkung der Feder 5 gegeneinander gedrückt. Über der Nabe 2 ist ein offener Ring 8 befestigt, auf dem der Vorhang aufgerollt wird und der auf die Nabe 2 gepreßt und dann mit einer Schraube befestigt wird. Die Nabe 2 weist Führungsbahnen 2a auf, in denen die Kugeln 4 radial geführt gleiten können. Dabei entspricht die Anzahl der Führungsbahnen 2a und der Nockenflächen 3a der Anzahl der Kugeln 4.The fixed hub 1 is blocked on the axis 7 and has two conical surfaces, namely a first surface 1 a, on which the balls 4 slide, and a second conical surface 1 b serving as a coupling surface, on which the cooperating conical surface 2 b movable hub 2 supports. The two conical coupling surfaces 1b and 2b are pressed against one another by the action of the spring 5. An open ring 8 is fastened over the hub 2, on which the curtain is rolled up and which is pressed onto the hub 2 and then fastened with a screw. The hub 2 has guideways 2a, in which the balls 4 can slide radially. The number of guideways 2a and cam surfaces 3a corresponds to the number of balls 4.

Zur Klärung der Betriebsweise dieser Verwirklichung wird insbesondere auf die Figuren 2 und 3 verwiesen, die die eingekuppelte Vorrichtung (blockierter Vorhang) und die ausgekuppelte Vorrichtung (Vorhang im Betätigungszustand) darstellen.To clarify the mode of operation of this realization, reference is made in particular to FIGS. 2 and 3, which represent the coupled device (blocked curtain) and the uncoupled device (curtain in the actuated state).

In Ruhestellung drückt die Feder 5 gegen die bewegliche Nabe 2, so daß die Kugeln 4 an der konischen Fläche 1a entlang gleiten und sich in der Nockenfläche 3a des Betätigungsringes 3 derart anordnen, daß sie die Naben 1 und 2 nicht mehr axial belasten. Auf diese Weise kommt die Reibfläche 1b der festen Nabe mit der Reibfläche 2b der beweglichen Nabe 2, auf die der Vorhang montiert ist, in Berührung; die von ihnen ausgeübte Bremskraft hält den Vorhang in einer bestimmten Stellung.In the rest position, the spring 5 presses against the movable hub 2, so that the balls 4 slide along the conical surface 1a and are arranged in the cam surface 3a of the actuating ring 3 such that they no longer axially load the hubs 1 and 2. In this way, the friction surface 1b of the fixed hub comes into contact with the friction surface 2b of the movable hub 2 on which the curtain is mounted; the braking force they exert holds the curtain in a certain position.

Sobald die Betätigung des Betätigungsringes 3 beginnt, werden die Kugeln 4 durch die an dem Betätigungsring 3 angebrachten Nocken 3a mitgenommen und gleiten dabei an der konischen Fläche 1a entlang und werden dabei radial nach innen in den Keilspalt zwischen den Naben 1 und 2 gedrückt, wobei die Nabe 2 gegen den Druck der Feder 5 zurückgefahren wird, so daß die beiden zusammenwirkenden konischen Reibflächen 1b und 2b der festen bzw. beweglichen Nabe nicht mehr miteinander in Berührung sind, sondern sich gegenseitig frei drehen können. Die Kugeln ordnen sich hierbei in der in Fig.3 dargestellten Weise an. Bei weiterer Drehung des Betätigungsringes 3 verklemmen sich die Kugeln 4 zwischen den Nockenflächen 3a und den Führungsnuten 2a so daß die Nabe 2 von dem Betätigungsring 3 mitgenommen wird, die dabei den Vorhang aufrollt, ohne daß dabei die auf die Kupplung zurückzuführende Reibung überwunden werden müßte. Diese Stellung der Kugeln wird solange beibehalten, wie ein gewisses Antriebsmoment auf dem Betätigungsring 3 einwirkt.As soon as the actuation of the actuation ring 3 begins, the balls 4 are moved by the cams 3a attached to the actuation ring 3 entrained and slide along the conical surface 1a and are pressed radially inward into the wedge gap between the hubs 1 and 2, the hub 2 being retracted against the pressure of the spring 5, so that the two interacting conical friction surfaces 1b and 2b the fixed or movable hub are no longer in contact with each other, but can rotate freely. The balls are arranged in the manner shown in Figure 3. With further rotation of the actuating ring 3, the balls 4 jam between the cam surfaces 3a and the guide grooves 2a so that the hub 2 is carried along by the actuating ring 3, which rolls up the curtain without having to overcome the friction attributable to the clutch. This position of the balls is maintained as long as a certain driving torque acts on the actuating ring 3.

Während der Bewegung des Vorhanges gleiten die Kugeln kreislinienförmig auf der Oberfläche 1 a der Nabe 1.During the movement of the curtain, the balls slide in a circular line on the surface 1 a of the hub 1.

Sobald das Antriebsmoment des Betätigungsringes 3 beendet ist, drückt die Feder 5 die bewegliche Nabe 2 in ihre Ausgangsstellung, wobei die Kugeln 4 nach außen an der konischen Fläche 1a entlang laufen.As soon as the drive torque of the actuating ring 3 has ended, the spring 5 presses the movable hub 2 into its starting position, the balls 4 running outwards along the conical surface 1a.

Eine andere Lösung sieht vor, daß die feste Nabe 1' nicht mit konischen Reibflächen sondern mit Kupplungszähnen 1c und entsprechenden Rasten versehen ist, was in Fig. 1 a dargestellt ist.Another solution provides that the fixed hub 1 'is not provided with conical friction surfaces but with clutch teeth 1c and corresponding notches, which is shown in Fig. 1 a.

Claims (7)

1. Actuating and fastening device for roller curtains having a stationary part (1) with a first coupling surface (1b) and a hub (2) which is axially movable and rotating with respect to the stationary part and by its rotation causes the winding and unwinding of the roller curtain, respectively, said hub having a second coupling surface (2b) cooperating with the first coupling surface, this second surface being pressed against the first coupling surface under the action of a resilient means (5) operating the movable hub (2) in order to brake it, at least one ball being provided arranged between the movable hub (2) and the amiaily stationary part (1), said ball being urged in a wedge-like narrowing slit between a surface (1a) provided on the axially stationary part (1) and the movable hub (2) by means of cam surfaces (3a) provided on a driving member (3) whenever the driving member is rotated relative to the movable hub (2), in order to raise the coupling surface (2b), until at its final fastened position said ball causes the rotary connection between the driving member (3) and the movable hub (2), characterized in that the balls (4) are arranged in a radial guideway (2a) provided in the movable hub (2); that the wedge-like slit inwardly radially narrows; that the driving member is a ring (3) covering from the outside the wedge-like slit, which ring has on its inner periphery the cam surface (3a) formed so that, by turning the ring (3) relative to the movable hub (2), it inwardly radially urges the ball (4) in its guideway (2a), axially displacing the movable hub (2) and lifting its second coupling surface (2b); that the cam surface (3a) then urges the ball to a final position against a radial stop, so as to clamp it between the cam surface (3a) and one side of the guideway (2a) and transfer the rotary motion from the ring (3) to the movable hub (2); and that the wedge-like slit has such an inclination that at the end of the driving torque the ball is radially outwardly moved back under the axial pressure of the resilient means (5) acting on the movable hub (2).
2. A device according to Claim 1, characterized in that said balls (4) and relative cam surfaces are in number of three.
3. A device according to Claim 1, characterized in that the axially stationary part is a hub (1) fixed on a stationary axis (7) coincident with the axis on which the curtain is rolled up.
4. A device according to Claim 3, characterized in that the coupling surface (1 b) arranged on the stationary hub (1) is configurated as friction surface.
5. A device according to Claim 1 and 4, characterized in that the surface (1a) of the stationary part (1) is tapered to form a wedge-like narrowing slit.
6. A device according to Claims 3 or 4, characterized in that the movable hub (2) is also mounted on the axis (7).
7. A device according to any of the preceding claims, characterized in that the driving member (3) is rotatably mounted on the hubs 1 and 2.
EP79100913A 1978-04-04 1979-03-27 Operating and locking device for roller blinds Expired EP0004629B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
IT2195978A IT1093465B (en) 1978-04-04 1978-04-04 Actuator and lock for roller blind - has cam driven ball bearings to force friction locking surfaces apart under rotational force
IT2195978 1978-04-04
IT1980279A IT1166607B (en) 1979-02-01 1979-02-01 Actuator and lock for roller blind - has cam driven ball bearings to force friction locking surfaces apart under rotational force
IT1980279 1979-02-01

Publications (2)

Publication Number Publication Date
EP0004629A1 EP0004629A1 (en) 1979-10-17
EP0004629B1 true EP0004629B1 (en) 1981-11-25

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP79100913A Expired EP0004629B1 (en) 1978-04-04 1979-03-27 Operating and locking device for roller blinds

Country Status (4)

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EP (1) EP0004629B1 (en)
AT (1) ATE1406T1 (en)
DE (1) DE2961403D1 (en)
ES (1) ES242415Y (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2777037B1 (en) * 1998-04-02 2000-05-26 Bubendorff Sa UNIDIRECTIONAL LOCKING DEVICE FOR ROLLING SHUTTER
GB0227247D0 (en) * 2002-11-22 2002-12-31 Newell Ltd Roller blinds
FR3010725B1 (en) * 2013-09-16 2015-10-09 Bubendorff ROLLING SHUTTER WITH IMPROVED BRAKING SYSTEM
FR3010724B1 (en) * 2013-09-16 2016-04-15 Bubendorff ROLLING SHUTTER WITH BRAKING SYSTEM

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE557450A (en) *
NL114053C (en) * 1961-06-09 1968-08-15 Hunter Douglas International SELF-BRAKE DRIVE FOR A BLIND, ROLLER SHUTTER OR SIMILAR SCREEN
FR1529630A (en) * 1967-02-07 1968-06-21 S E R E P Soc D Etudes Realisa Improvements in manual control mechanisms for roller shutters
CH489691A (en) * 1968-04-17 1970-04-30 Koller Metallbau Ag Drive device for a blind of a window sash pivotable about the central vertical axis

Also Published As

Publication number Publication date
EP0004629A1 (en) 1979-10-17
ES242415Y (en) 1981-07-16
ES242415U (en) 1981-02-16
DE2961403D1 (en) 1982-01-28
ATE1406T1 (en) 1982-08-15

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