WO2012080528A1 - Cardan mechanism for roller blinds - Google Patents

Cardan mechanism for roller blinds Download PDF

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Publication number
WO2012080528A1
WO2012080528A1 PCT/ES2010/070845 ES2010070845W WO2012080528A1 WO 2012080528 A1 WO2012080528 A1 WO 2012080528A1 ES 2010070845 W ES2010070845 W ES 2010070845W WO 2012080528 A1 WO2012080528 A1 WO 2012080528A1
Authority
WO
WIPO (PCT)
Prior art keywords
blind
mechanism according
clutch
crown
shaft
Prior art date
Application number
PCT/ES2010/070845
Other languages
Spanish (es)
French (fr)
Inventor
Francisco GUILLÉN CHICO
Francisco Sanchez
Original Assignee
Gaviota Simbac, S.L.
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 Gaviota Simbac, S.L. filed Critical Gaviota Simbac, S.L.
Priority to ES201390065A priority Critical patent/ES2466540B1/en
Priority to PCT/ES2010/070845 priority patent/WO2012080528A1/en
Publication of WO2012080528A1 publication Critical patent/WO2012080528A1/en

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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
    • E06B9/76—Operating devices or mechanisms, e.g. with electric drive using crank handles

Definitions

  • the invention refers to a gimbal mechanism for blinds of the type that incorporate an inertial clutch in descent without end of stroke.
  • the object of the invention is centered on a gimbal with inertial clutch in descent for blinds, without end of stroke, whose main advantage is to avoid changing the direction of rotation of the crank when lowering the blind.
  • the field of application of the present invention is the sector of the blinds and their components.
  • European patent application number EP121 1380 relating to a "Lathe for a roller shutter or shutter", consists of an endless lathe engaging with a helical gear attached to one end of the blind driving axis of the blinds.
  • Said lathe has a braking mechanism that is formed by a washer fixed to each end and located between two thermoplastic bearings fixed to the housing. The axial pressure produced by the winch and the worm gear during operation compresses each washer between two bearings, creating an effort that slows down the friction.
  • French patent application number FR2800121 refers to an operation device for roller shutter with toothed crown, reversible auger and braking system with clutch to limit the moment of rotation between the blind shaft and the crank.
  • European patent application number EP0889193 describes a rope winch with hitch and release device for driving the roller of a roller shutter, in which the winding drum has a housing for a descending gear mechanism between the winding drum and the part attached to the axis of a blind roller.
  • the gear train that forms the descending mechanism of the gear has a limit switch.
  • the housing has a pulley activated by a cord.
  • the pulley is attached to the descending mechanism of the gear by a coaxial primary shaft that is provided with a clutch mechanism housed within the pulley.
  • the pulley and the gear of the descending mechanism are connected to the shaft section by a brake system with pairs of elastic deformable springs and the brake lining is made of an elastomeric foam.
  • the cardan mechanism object of the present invention, allows the system to be released and the crank rotates free at that moment, as the system ceases to be fully loaded, when the shaft is completely lowered. allows during the maneuvers of ascent and descent of the blind a habitual operation.
  • the mechanism is configured from a housing inside which houses a transmission crown associated with an auger driven by a crank, so that when the crank drives the auger, it acts on the crown that rotates an axis of transmission that causes the rotation of a roller, axis or tube of the roller blind, preferably through an adapter that joins the cardan mechanism with said axis or tube of the blind.
  • the clutch mechanism integrates the clutch mechanism, consisting of a clutch shaft with movement transmission elements, or cams, at least one, which are in contact with the crown when it is rotated by endless action during lifting and descent of the blind.
  • Said transmission element can be any element capable of allowing the transmission of movement between the clutch shaft and the gear ring according to the present invention.
  • the clutch axle is arranged between full paths, so that the clutch mechanism acts by inertia when the blind descends, releasing the system when the axis of the blind ceases to have a load when the blind has completely descended and causing the crank to rotate free, until the transmission elements or cams come into contact with the crown so that it pushes them to raise the blind, thus avoiding the change of direction of rotation of the crank when the blind descends completely.
  • the movement of the crown is transferred to the transmission elements arranged in the friction clutch axis while the weight of the blind transmits the torque from the axis of the blind to the axis of the clutch.
  • the cardan mechanism also has a support for its coupling to the lid of the drawer or front of the blind, in case it is not desired to do it directly.
  • Said support is fixed to the drawer or tester on one side and on the opposite side the cardan mechanism is fixed. This support is compatible with various sizes of testers to be able to adapt to them and being fixed through some pivots that the testero has.
  • the cardan mechanism is preferably coupled to the support by clipping.
  • Figure number 1 shows a perspective view of the exploded view of the cardan mechanism for blinds with inertial clutch in descent without end of stroke, object of the invention, showing in it the configuration and arrangement of all the elements it comprises.
  • Figure number 2 shows a perspective view of the transmission crown with the clutch system it incorporates.
  • Figure number 3 shows an elevation view of the mechanism assembly once assembled, but discovered, showing in it the arrangement and relationship of the different elements that comprise it.
  • Figure number 4 shows a perspective view of the mechanism once mounted and housed inside the housing, its external configuration being appreciated therein.
  • Figure number 5 shows a perspective view of the mechanism object of the present invention coupled to a tester through its support.
  • Figure number 6 shows the support of the mechanism object of the invention. PREFERRED EMBODIMENT OF THE INVENTION
  • the mechanism (1) in question is configured from a circular housing, formed by a male part (2a) and another female part (2b) that are coupled to each other fixed by screws (3), inside which a transmission gear ring (4) is housed to which an adapter (5) is attached to which the shaft, roller or tube of the shutter is connected, which is actuated through the mechanism (1) by rotating the transmission crown (4) by means of an endless element (6) that is actuated by a crank (not shown).
  • the endless element (6) is contemplated, in contact with the teeth of said toothed crown (4), to rotate the drive shaft of the roller of the blind to which it is destines the mechanism and that will be coupled to said adapter (5).
  • the endless element (6) has a brake system formed by a bushing (7) and with two brake springs (8).
  • the proposed mechanism has the peculiarity that the toothed crown (4) incorporates an inertial clutch system comprising a clutch shaft (9) housed in its central hollow (10) inside the toothed crown (4), said elements being fixed between a lower plate (1 1) of the clutch cam and an upper plate (12) of the crown cam.
  • Said clutch shaft (9) which is configured as a bushing, has an approximately triangular central recess suitable for receiving three projections (5a) internally presenting the adapter (5) of the roller, shaft or tube of the blind. Said configuration can be conveniently modified to directly receive the axis of the blind.
  • three motion transmission elements or cams (13) are preferably radially coupled with preferably wedge configuration arranged on respective springs (14) that tend to push the cams (13) outwards.
  • Said cams (13) on the other hand, have a configuration, preferably wedge, to allow contact and slide on three projections (15) of progressive increase provided in the perimeter of the central hollow (10) of the crown gear (4) .
  • This clutch mechanism acts by inertia, so that, when the blind has been lowered and there is no load on the axis of the blind, and therefore also on the adapter (5) or the axis of the clutch (9), the crown (4) does not press the cams (15) causing the endless element (6) and the crank to turn free.
  • the cardan mechanism has a support (17) for fixing it to a box or drawer cover (16) that houses the blind.
  • Said support (17) comprises a tongue (21) that is inserted into a cavity disposed on the side of the housing opposite to that of the adapter (5), so that the coupling between the two is achieved by clipping.
  • fixing means consisting of at least one through hole (19) are used, which is inserted into a stud (18) located in said tester (16).
  • the support (17) has at least one notch (20) that allows reducing the size of the support (17) to position the mechanism (1) in the tester (16) depending on the dimensions of this.

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
  • Blinds (AREA)

Abstract

The invention relates to a cardan mechanism for roller blinds, comprising a crown wheel (4), to which the adapter (5) of the shaft, tube or roller for winding the roller blind is coupled, with a rotating auger (6) which rotates the transmission shaft of the roller blind, and an inertia clutch system made up of a clutch shaft (9), housed in the crown wheel (4), configured as a bushing and to which three transmission elements (13) arranged on springs (14) are radially coupled, said springs tending to push said elements towards the perimeter of the central opening (10) of the crown, which includes three projections (15) of gradually increasing size, such that, when the roller blind is lowered and no load is applied to the transmission shaft, the clutch system is released allowing the crank to turn freely.

Description

MECANISMO DE CARDAN PARA PERSIANAS  CARDAN MECHANISM FOR BLINDS
OBJETO DE LA INVENCIÓN La invención, tal como expresa el enunciado de la presente memoria descriptiva, se refiere a un mecanismo de cardán para persianas del tipo que incorporan un embrague inercial en descenso sin final de carrera. OBJECT OF THE INVENTION The invention, as stated in the present specification, refers to a gimbal mechanism for blinds of the type that incorporate an inertial clutch in descent without end of stroke.
En particular, el objeto de la invención se centra en un cardán con embrague inercial en descenso para persianas, sin final de carrera, cuya principal ventaja es evitar el cambio de sentido de giro de la manivela al descender la persiana.  In particular, the object of the invention is centered on a gimbal with inertial clutch in descent for blinds, without end of stroke, whose main advantage is to avoid changing the direction of rotation of the crank when lowering the blind.
El campo de aplicación de la presente invención es el sector de las persianas y sus componentes.  The field of application of the present invention is the sector of the blinds and their components.
ANTECEDENTES DE LA INVENCIÓN BACKGROUND OF THE INVENTION
En la actualidad, y como referencia al estado de la técnica, debe señalarse que, si bien existen en el mercado otros mecanismos de embrague para persianas, por parte del solicitante se desconoce la existencia de ninguno que presente unas características técnicas, estructurales y constitutivas semejantes a las que presenta el que aquí se reivindica. At present, and as a reference to the state of the art, it should be noted that, although there are other clutch mechanisms for blinds on the market, the existence of none that has similar technical, structural and constitutive characteristics is unknown. to those presented by the one claimed here.
La solicitud de patente europea número EP121 1380, relativa a un "Torno para una persiana o un obturador de rodillo", consiste en un torno sin fin acoplando con un engranaje helicoidal fijado a un extremo del eje conductor ciego de las persianas. Dicho torno tiene un mecanismo para el frenado que está formado por una arandela fijada a cada extremo y situada entre dos cojinetes de termoplástico fijados a la carcasa. La presión axial producida por el torno y el engranaje helicoidal durante la operación comprime a cada arandela entre dos cojinetes, creando un esfuerzo que frena de la fricción.  European patent application number EP121 1380, relating to a "Lathe for a roller shutter or shutter", consists of an endless lathe engaging with a helical gear attached to one end of the blind driving axis of the blinds. Said lathe has a braking mechanism that is formed by a washer fixed to each end and located between two thermoplastic bearings fixed to the housing. The axial pressure produced by the winch and the worm gear during operation compresses each washer between two bearings, creating an effort that slows down the friction.
La solicitud de patente en Francia número FR2800121 , se refiere a un dispositivo de operaciones para persiana enrollable con corona dentada, sinfín reversible y sistema de frenado con embrague para limitar el momento de rotación entre el árbol de la persiana y la manivela.  The French patent application number FR2800121, refers to an operation device for roller shutter with toothed crown, reversible auger and braking system with clutch to limit the moment of rotation between the blind shaft and the crank.
La solicitud de patente europea número EP0889193, describe un torno de cuerda con enganche y dispositivo de desenganche para conducir el rodillo de una persiana enrollable, en el que el tambor del devanado tiene una carcasa para un mecanismo descendente del engranaje entre el tambor del devanado y la parte unidos al eje de un rodillo ciego. El tren de engranajes que forma el mecanismo descendente del engranaje tiene un conmutador de límite. La carcasa tiene una polea activada por un cordón. La polea está unida al mecanismo descendente del engranaje por un eje primario coaxial que está dotado de un mecanismo de embrague alojado dentro de la polea. La polea y el engranaje del mecanismo descendente están unidos a la sección del eje por un sistema de frenos con pares de muelles deformables elásticos y el forro del freno se hace de una espuma elastomérica. European patent application number EP0889193 describes a rope winch with hitch and release device for driving the roller of a roller shutter, in which the winding drum has a housing for a descending gear mechanism between the winding drum and the part attached to the axis of a blind roller. The gear train that forms the descending mechanism of the gear has a limit switch. The housing has a pulley activated by a cord. The pulley is attached to the descending mechanism of the gear by a coaxial primary shaft that is provided with a clutch mechanism housed within the pulley. The pulley and the gear of the descending mechanism are connected to the shaft section by a brake system with pairs of elastic deformable springs and the brake lining is made of an elastomeric foam.
Dichos documentos, sin embargo, describen dispositivos de aplicación y funcionamiento similar pero claramente de características técnicas distintas a las del mecanismo de cardán para persianas con embrague inercial en descenso sin final de carrera aquí descrito.  These documents, however, describe devices of application and operation similar but clearly of different technical characteristics to those of the gimbal mechanism for blinds with inertial clutch in descent without end of stroke described here.
EXPLICACIÓN DE LA INVENCIÓN EXPLANATION OF THE INVENTION
El mecanismo de cardan, objeto de la presente invención, permite que, al dejar de tener carga el eje de la persiana al haber descendido completamente la misma, el sistema se libere y la manivela gire libre en ese momento, a la vez que el sistema permite durante las maniobras de ascenso y descenso de la persiana un funcionamiento habitual. The cardan mechanism, object of the present invention, allows the system to be released and the crank rotates free at that moment, as the system ceases to be fully loaded, when the shaft is completely lowered. allows during the maneuvers of ascent and descent of the blind a habitual operation.
Para ello, el mecanismo se configura a partir de una carcasa en cuyo interior se aloja una corona de transmisión asociada a un sinfín accionado por una manivela, de manera que cuando la manivela acciona el sinfín, este actúa sobre la corona que hace girar un eje de transmisión que provoca el giro de un rodillo, eje o tubo de la persiana enrollable, preferiblemente a través de un adaptador que une el mecanismo cardan con dicho eje o tubo de la persiana. En la corona dentada se integra el mecanismo de embrague, compuesto por un eje de embrague con elementos de transmisión del movimiento, o levas, al menos uno, que se encuentran en contacto con la corona cuando esta gira por acción del sinfín durante la elevación y descenso de la persiana. Dicho elemento de transmisión puede ser cualquier elemento capaz de permitir la transmisión de movimiento entre el eje de embrague y la corona dentada de acuerdo a la presente invención. El eje de embrague está dispuesto entre sendas pletinas, de manera que el mecanismo de embrague actúa por inercia cuando desciende la persiana, liberando el sistema cuando el eje de la persiana deja de tener carga al haber descendido completamente la persiana y haciendo que la manivela gire libre, hasta que los elementos de transmisión o levas entran en contacto con la corona para que esta empuje a los mismos para subir la persiana, evitando así el cambio de sentido de giro de la manivela al descender completamente la persiana. Durante el descenso de la persiana, el movimiento de la corona se traslada a los elementos de transmisión dispuestos en el eje del embrague por fricción mientras el peso de la persiana transmita el par desde el eje de la persiana hasta el eje del embrague. For this, the mechanism is configured from a housing inside which houses a transmission crown associated with an auger driven by a crank, so that when the crank drives the auger, it acts on the crown that rotates an axis of transmission that causes the rotation of a roller, axis or tube of the roller blind, preferably through an adapter that joins the cardan mechanism with said axis or tube of the blind. The clutch mechanism integrates the clutch mechanism, consisting of a clutch shaft with movement transmission elements, or cams, at least one, which are in contact with the crown when it is rotated by endless action during lifting and descent of the blind. Said transmission element can be any element capable of allowing the transmission of movement between the clutch shaft and the gear ring according to the present invention. The clutch axle is arranged between full paths, so that the clutch mechanism acts by inertia when the blind descends, releasing the system when the axis of the blind ceases to have a load when the blind has completely descended and causing the crank to rotate free, until the transmission elements or cams come into contact with the crown so that it pushes them to raise the blind, thus avoiding the change of direction of rotation of the crank when the blind descends completely. During the descent of the blind, the movement of the crown is transferred to the transmission elements arranged in the friction clutch axis while the weight of the blind transmits the torque from the axis of the blind to the axis of the clutch.
El mecanismo de cardan presenta también un soporte para su acoplamiento a la tapa del cajón o testero de la persiana, en el caso de que no se desee hacer de manera directa. Dicho soporte se fija al cajón o testero por un lado y por el lado contrario se fija el mecanismo cardan. Dicho soporte es compatible con diversos tamaños de testeros al poder adaptarse a los mismos y quedando fijado a través de unos pivotes que posee el testero. El mecanismo de cardan se acopla al soporte preferiblemente mediante clipado.  The cardan mechanism also has a support for its coupling to the lid of the drawer or front of the blind, in case it is not desired to do it directly. Said support is fixed to the drawer or tester on one side and on the opposite side the cardan mechanism is fixed. This support is compatible with various sizes of testers to be able to adapt to them and being fixed through some pivots that the testero has. The cardan mechanism is preferably coupled to the support by clipping.
DESCRIPCIÓN DE LOS DIBUJOS Para complementar la descripción que se está realizando del mecanismo objeto de la invención y para ayudar a una mejor comprensión de las características que lo distinguen, se acompaña la presente memoria descriptiva, como parte integrante de la misma, un juego de figuras, en los que con carácter ilustrativo y no limitativo representan: DESCRIPTION OF THE DRAWINGS To complement the description that is being made of the mechanism object of the invention and to help a better understanding of the characteristics that distinguish it, this descriptive report is attached, as an integral part thereof, a set of figures , in which with an illustrative and non-limiting nature they represent:
La figura número 1 muestra una vista en perspectiva del despiece del mecanismo de cardan para persianas con embrague inercial en descenso sin final de carrera, objeto de la invención, apreciándose en ella la configuración y disposición de todos los elementos que comprende. Figure number 1 shows a perspective view of the exploded view of the cardan mechanism for blinds with inertial clutch in descent without end of stroke, object of the invention, showing in it the configuration and arrangement of all the elements it comprises.
La figura número 2 muestra una vista en perspectiva de la corona de transmisión con el sistema de embrague que incorpora.  Figure number 2 shows a perspective view of the transmission crown with the clutch system it incorporates.
La figura número 3 muestra una vista en alzado del conjunto del mecanismo una vez montado, pero descubierto, apreciándose en ella la disposición y relación de los diferentes elementos que lo integran.  Figure number 3 shows an elevation view of the mechanism assembly once assembled, but discovered, showing in it the arrangement and relationship of the different elements that comprise it.
La figura número 4 muestra una vista en perspectiva del mecanismo una vez montado y alojado dentro de la carcasa, apreciándose en ella su configuración externa.  Figure number 4 shows a perspective view of the mechanism once mounted and housed inside the housing, its external configuration being appreciated therein.
La figura número 5 muestra una vista en perspectiva del mecanismo objeto de la presente invención acoplado a un testero a través de su soporte.  Figure number 5 shows a perspective view of the mechanism object of the present invention coupled to a tester through its support.
La figura número 6 muestra el soporte del mecanismo objeto de la invención. REALIZACIÓN PREFERENTE DE LA INVENCIÓN Figure number 6 shows the support of the mechanism object of the invention. PREFERRED EMBODIMENT OF THE INVENTION
A la vista de las mencionadas figuras, y de acuerdo con la numeración adoptada, a continuación se describe un ejemplo preferente de realización de la invención. In view of the aforementioned figures, and in accordance with the numbering adopted, a preferred embodiment of the invention is described below.
Así, tal como se observa en la figura 1 , el mecanismo (1 ) en cuestión se configura a partir de una carcasa circular, formada por una parte macho (2a) y otra parte hembra (2b) que se acoplan entre sí fijadas mediante tornillos (3), en cuyo interior se aloja una corona dentada (4) de transmisión a la que se acopla un adaptador (5) al que se une el eje, rodillo o tubo de la persiana que es accionada a través del mecanismo (1 ) al hacer girar la corona de transmisión (4) por medio de un elemento sinfín (6) que es accionado por una manivela (no representada).  Thus, as can be seen in Figure 1, the mechanism (1) in question is configured from a circular housing, formed by a male part (2a) and another female part (2b) that are coupled to each other fixed by screws (3), inside which a transmission gear ring (4) is housed to which an adapter (5) is attached to which the shaft, roller or tube of the shutter is connected, which is actuated through the mechanism (1) by rotating the transmission crown (4) by means of an endless element (6) that is actuated by a crank (not shown).
En el interior de dicha carcasa (2a, 2b) se contempla el elemento sinfín (6), en contacto con los dientes de la citada corona dentada (4), para hacer girar el eje de transmisión del rodillo de la persiana a la que se destina el mecanismo y que irá acoplado a dicho adaptador (5). En el extremo opuesto al de acoplamiento de la manivela, el elemento sinfín (6) presenta un sistema de freno conformado por un casquillo (7) y con sendos muelles de freno (8).  Inside said casing (2a, 2b) the endless element (6) is contemplated, in contact with the teeth of said toothed crown (4), to rotate the drive shaft of the roller of the blind to which it is destines the mechanism and that will be coupled to said adapter (5). At the opposite end of the crank coupling, the endless element (6) has a brake system formed by a bushing (7) and with two brake springs (8).
A partir de dicha configuración, el mecanismo propuesto presenta la particularidad de que la corona dentada (4) incorpora un sistema de embrague inercial que comprende un eje de embrague (9) alojado en su hueco central (10) en el interior de la corona dentada (4), estando dichos elementos fijados entre una pletina inferior (1 1 ) de leva del embrague y una pletina superior (12) de leva de la corona.  From this configuration, the proposed mechanism has the peculiarity that the toothed crown (4) incorporates an inertial clutch system comprising a clutch shaft (9) housed in its central hollow (10) inside the toothed crown (4), said elements being fixed between a lower plate (1 1) of the clutch cam and an upper plate (12) of the crown cam.
Dicho eje de embrague (9), que está configurado a modo de casquillo, presenta un hueco central aproximadamente triangular apto para recibir tres salientes (5a) que presenta interiormente el adaptador (5) del rodillo, eje o tubo de la persiana. Dicha configuración puede ser modificada convenientemente para recibir directamente el eje de la persiana. Además, a dicho eje de embrague (9) preferiblemente se acoplan radialmente tres elementos de transmisión del movimiento o levas (13) con configuración preferiblemente en cuña dispuestas sobre respectivos resortes (14) que tienden a empujar las levas (13) hacia el exterior. Dichas levas (13), por su parte presentan una configuración, preferiblemente en cuña, para permitir entrar en contacto y resbalar sobre tres salientes (15) de incremento progresivo previstos en el perímetro del hueco central (10) de la corona dentada (4).  Said clutch shaft (9), which is configured as a bushing, has an approximately triangular central recess suitable for receiving three projections (5a) internally presenting the adapter (5) of the roller, shaft or tube of the blind. Said configuration can be conveniently modified to directly receive the axis of the blind. In addition, to said clutch shaft (9), three motion transmission elements or cams (13) are preferably radially coupled with preferably wedge configuration arranged on respective springs (14) that tend to push the cams (13) outwards. Said cams (13), on the other hand, have a configuration, preferably wedge, to allow contact and slide on three projections (15) of progressive increase provided in the perimeter of the central hollow (10) of the crown gear (4) .
Por tanto, cuando el usuario desee bajar la persiana, deberá girar la manivela (no mostrada) que activa el sinfín (6) y que actúa directamente sobre la corona dentada (4) de tal manera que esta gire en el sentido de giro de la flecha D (Fig. 1 ). Dicha corona dentada (4) transmite el movimiento por fricción a través de sus saliente (15) a las levas (13) empujadas a su vez por los muelles (14), provocando que el eje del embrague (9) gire y por tanto el adaptador (5) y el eje de la persiana a través de los salientes (5a) acoplados en el embrague (9). La fricción entre las levas (13) y la corona (4) se consigue debido al par generado en el eje de la persiana por el peso de la misma y que es transmitido hasta el eje del embrague (9) y por tanto hasta las levas (13). Therefore, when the user wishes to lower the blind, he must turn the crank (not shown) that activates the auger (6) and acts directly on the toothed crown (4) so that it rotates in the direction of rotation of arrow D (Fig. 1). Said crown gear (4) transmits the frictional movement through its projections (15) to the cams (13) pushed in turn by the springs (14), causing the clutch shaft (9) to rotate and therefore the adapter (5) and the shaft of the blind through the projections (5a) attached to the clutch (9). The friction between the cams (13) and the crown (4) is achieved due to the torque generated in the axis of the blind by the weight of the same and that is transmitted to the axis of the clutch (9) and therefore to the cams (13).
Este mecanismo de embrague actúa por inercia, de tal forma que, cuando se ha descendido la persiana y ya no hay carga sobre el eje de la persiana, y por tanto tampoco sobre el adaptador (5) o el eje del embrague (9), la corona (4) no presiona las levas (15) provocando que el elemento sinfín (6) y la manivela giren libres.  This clutch mechanism acts by inertia, so that, when the blind has been lowered and there is no load on the axis of the blind, and therefore also on the adapter (5) or the axis of the clutch (9), the crown (4) does not press the cams (15) causing the endless element (6) and the crank to turn free.
Para elevar la persiana, será necesario girar la manivela en el sentido contrario, de manera que la corona (4) gire en el sentido de giro de la flecha A (Fig. 1 ). De esta manera los salientes (15) existentes en el interior de la corona (4) empujan una de las superficies de las levas (14) con forma de cuña que transmiten dicho giro al eje de embrague (9), provocando que la persiana se eleve y se enrolle alrededor de su eje.  To raise the blind, it will be necessary to turn the crank in the opposite direction, so that the crown (4) rotates in the direction of rotation of arrow A (Fig. 1). In this way the projections (15) existing inside the crown (4) push one of the surfaces of the wedge-shaped cams (14) that transmit said rotation to the clutch shaft (9), causing the blind to Lift and wrap around its axis.
El mecanismo de cardan presenta un soporte (17) para su fijación a un testero o tapa del cajón (16) que aloja a la persiana. Dicho soporte (17) comprende una lengüeta (21 ) que se introduce en una cavidad dispuesta en el lado de la carcasa opuesto al del adaptador (5), de manera que el acoplamiento entre ambos se consiga mediante clipado. Para fijar el soporte (17) al testero (16), se emplean medios de fijación consistentes en al menos un orificio pasante (19) que se introduce en un tetón (18) situado en dicho testero (16). Para poder adaptar la posición del mecanismo (1 ) en diferentes testeros con distintas dimensiones, el soporte (17) presenta al menos una entalla (20) que permite reducir el tamaño del soporte (17) para posicionar el mecanismo (1 ) en el testero (16) en función de las dimensiones de este.  The cardan mechanism has a support (17) for fixing it to a box or drawer cover (16) that houses the blind. Said support (17) comprises a tongue (21) that is inserted into a cavity disposed on the side of the housing opposite to that of the adapter (5), so that the coupling between the two is achieved by clipping. To fix the support (17) to the tester (16), fixing means consisting of at least one through hole (19) are used, which is inserted into a stud (18) located in said tester (16). In order to adapt the position of the mechanism (1) in different testers with different dimensions, the support (17) has at least one notch (20) that allows reducing the size of the support (17) to position the mechanism (1) in the tester (16) depending on the dimensions of this.

Claims

R E I V I N D I C A C I O N E S
1 . Mecanismo de cardán para persianas, configurado a partir de una carcasa en cuyo interior se aloja una corona dentada (4) de transmisión con un hueco central (10) a la que se acopla un eje, tubo o rodillo de enrollamiento de la persiana, y un elemento sinfín (6) accionado por una manivela, al que se acoplan los dientes de la citada corona dentada (4), para hacer girar el eje de enrollamiento de la persiana al girar dicha manivela, caracterizado porque presenta un sistema de embrague inercial que comprende: one . Gimbal mechanism for blinds, configured from a housing inside which houses a transmission toothed crown (4) with a central recess (10) to which a shaft, tube or roller winding roller is attached, and an endless element (6) actuated by a crank, to which the teeth of the said toothed crown (4) are coupled, to rotate the winding axis of the blind when said crank rotates, characterized in that it has an inertial clutch system that understands:
- un eje de embrague (9), alojado en el hueco central (10) de la corona dentada (4), configurado para recibir el eje, tubo o rodillo de enrollamiento de la persiana, - a clutch shaft (9), housed in the central recess (10) of the toothed crown (4), configured to receive the roller shaft, tube or winding roller,
- al menos un elemento de transmisión (13) acoplado al eje de embrague (9), y - at least one transmission element (13) coupled to the clutch shaft (9), and
- al menos un saliente (15) de incremento progresivo dispuesto en el hueco central (10) de la superficie interior de la corona (4), - at least one projection (15) of progressive increase arranged in the central recess (10) of the inner surface of the crown (4),
de tal manera que durante el ascenso y descenso de la persiana el elemento de transmisión (13) gira en contacto con la corona (4) y cuando deja de haber carga sobre el eje de la persiana al haber descendido la misma completamente, el sistema de embrague se libera haciendo que la manivela gire libre. in such a way that during the raising and lowering of the blind the transmission element (13) rotates in contact with the crown (4) and when there is no load on the axis of the blind when the same has descended completely, the system of Clutch is released causing the crank to rotate free.
2. Mecanismo, según reivindicación 1 , caracterizado porque cada elemento de transmisión (13) presenta una configuración en cuña y se dispone sobre un resorte (14) que tiende a empujar dicho elemento hacia el perímetro del hueco central (10) de la corona dentada (4). 2. Mechanism according to claim 1, characterized in that each transmission element (13) has a wedge configuration and is arranged on a spring (14) that tends to push said element towards the perimeter of the central hollow (10) of the toothed crown (4).
3. Mecanismo, según reivindicación 1 , caracterizado porque comprende un adaptador (5) acoplado al eje de embrague (9) y configurado para unirse al eje, tubo o rodillo de enrollamiento de la persiana. 3. Mechanism according to claim 1, characterized in that it comprises an adapter (5) coupled to the clutch shaft (9) and configured to join the roller shaft, tube or winding roller.
4. Mecanismo, según reivindicación 1 , caracterizado porque comprende tres elementos de transmisión (13) y tres salientes (15). 4. Mechanism according to claim 1, characterized in that it comprises three transmission elements (13) and three projections (15).
5. Mecanismo, según reivindicación 1 , caracterizado porque el elemento de transmisión (13) es una leva. 5. Mechanism according to claim 1, characterized in that the transmission element (13) is a cam.
6. Mecanismo, según reivindicación 1 , caracterizado porque comprende un soporte (17) para fijarse a un testero o tapa del cajón (16) que aloja a la persiana. 6. Mechanism according to claim 1, characterized in that it comprises a support (17) to be attached to a box or lid of the drawer (16) that houses the blind.
7. Mecanismo, según reivindicación 5, caracterizado porque dicho soporte (17) comprende una lengüeta (21 ) que se introduce en una cavidad dispuesta en el lado de la carcasa opuesto al del adaptador (5). 7. Mechanism according to claim 5, characterized in that said support (17) comprises a tongue (21) that is inserted into a cavity arranged on the side of the housing opposite to that of the adapter (5).
8. Mecanismo, según reivindicación 5, caracterizado porque dicho soporte (17) presenta medios de fijación al testero (16) consistentes en al menos un orificio pasante (19) en el que se introduce un tetón (18) situado en el testero (16). A mechanism according to claim 5, characterized in that said support (17) has fastening means (16) consisting of at least one through hole (19) into which a pin (18) located in the tester (16) is inserted. ).
9. Mecanismo, según reivindicación 5, caracterizado porque dicho soporte (17) posee al menos una entalla (20) que permiten reducir el tamaño del soporte (17) para posicionar el mecanismo (1 ) en el testero (16) en función de las dimensiones de este. 9. Mechanism according to claim 5, characterized in that said support (17) has at least one notch (20) that allows reducing the size of the support (17) to position the mechanism (1) in the tester (16) as a function of the dimensions of this.
PCT/ES2010/070845 2010-12-17 2010-12-17 Cardan mechanism for roller blinds WO2012080528A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
ES201390065A ES2466540B1 (en) 2010-12-17 2010-12-17 Cardan mechanism for blinds
PCT/ES2010/070845 WO2012080528A1 (en) 2010-12-17 2010-12-17 Cardan mechanism for roller blinds

Applications Claiming Priority (1)

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PCT/ES2010/070845 WO2012080528A1 (en) 2010-12-17 2010-12-17 Cardan mechanism for roller blinds

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WO2012080528A1 true WO2012080528A1 (en) 2012-06-21

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014013228A1 (en) * 2012-07-19 2014-01-23 R. Soper Ltd Raising/lowering mechanism for a roller blind

Citations (8)

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Publication number Priority date Publication date Assignee Title
ES129769U (en) * 1967-05-10 1967-09-16 Valle Allende Y Rodriguez De Codes Fernandez A B Y F An apparatus provided of an electric motor to raise and lower blinds and awnings. (Machine-translation by Google Translate, not legally binding)
ES1018369U (en) * 1991-08-08 1992-01-16 Talcoy, S.A. Lathe for cable operation for roller blinds. (Machine-translation by Google Translate, not legally binding)
US5117893A (en) * 1985-08-07 1992-06-02 Excel Shutter Systems, Inc. Rolling shutter system
ES2081785T1 (en) * 1994-02-18 1996-03-16 Imbac Spa IMPROVED SUPPORT FOR ROLLER BLADE MANEUVERING ELEMENTS.
US5711360A (en) * 1996-02-14 1998-01-27 Simu Operating device for rolling shutter assemblies
JP2000145335A (en) * 1998-11-13 2000-05-26 Sanwa Shutter Corp Braking device of shutter for construction
ES2235809T3 (en) * 1999-11-30 2005-07-16 Gaviota Simbac, S.L. DEVICE FOR THE SETTING OF AN ORGAN OF DRIVING AND OPERATING MECHANISM OF A CLOSING OR SOLAR PROTECTION SYSTEM THAT INCLUDES SUCH DEVICE.
ES2306866T3 (en) * 2002-03-20 2008-11-16 Rollease, Inc. CLUTCH OF ROLLABLE DISPLAY WITH INTERNAL GEARS.

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES129769U (en) * 1967-05-10 1967-09-16 Valle Allende Y Rodriguez De Codes Fernandez A B Y F An apparatus provided of an electric motor to raise and lower blinds and awnings. (Machine-translation by Google Translate, not legally binding)
US5117893A (en) * 1985-08-07 1992-06-02 Excel Shutter Systems, Inc. Rolling shutter system
ES1018369U (en) * 1991-08-08 1992-01-16 Talcoy, S.A. Lathe for cable operation for roller blinds. (Machine-translation by Google Translate, not legally binding)
ES2081785T1 (en) * 1994-02-18 1996-03-16 Imbac Spa IMPROVED SUPPORT FOR ROLLER BLADE MANEUVERING ELEMENTS.
US5711360A (en) * 1996-02-14 1998-01-27 Simu Operating device for rolling shutter assemblies
JP2000145335A (en) * 1998-11-13 2000-05-26 Sanwa Shutter Corp Braking device of shutter for construction
ES2235809T3 (en) * 1999-11-30 2005-07-16 Gaviota Simbac, S.L. DEVICE FOR THE SETTING OF AN ORGAN OF DRIVING AND OPERATING MECHANISM OF A CLOSING OR SOLAR PROTECTION SYSTEM THAT INCLUDES SUCH DEVICE.
ES2306866T3 (en) * 2002-03-20 2008-11-16 Rollease, Inc. CLUTCH OF ROLLABLE DISPLAY WITH INTERNAL GEARS.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014013228A1 (en) * 2012-07-19 2014-01-23 R. Soper Ltd Raising/lowering mechanism for a roller blind

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