EP4194656A1 - Kettenantrieb für eine fenstereinheit und fenstereinheit, die den kettenantrieb enthält - Google Patents

Kettenantrieb für eine fenstereinheit und fenstereinheit, die den kettenantrieb enthält Download PDF

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Publication number
EP4194656A1
EP4194656A1 EP22213237.5A EP22213237A EP4194656A1 EP 4194656 A1 EP4194656 A1 EP 4194656A1 EP 22213237 A EP22213237 A EP 22213237A EP 4194656 A1 EP4194656 A1 EP 4194656A1
Authority
EP
European Patent Office
Prior art keywords
chain
articulated chain
thrust
pusher
segment
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.)
Pending
Application number
EP22213237.5A
Other languages
English (en)
French (fr)
Inventor
Toni Cavalcante
Stefanou THEODOROS
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.)
Topp A Socio Unico Srl
Original Assignee
Topp A Socio Unico 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 Topp A Socio Unico Srl filed Critical Topp A Socio Unico Srl
Publication of EP4194656A1 publication Critical patent/EP4194656A1/de
Pending legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F11/00—Man-operated mechanisms for operating wings, including those which also operate the fastening
    • E05F11/02—Man-operated mechanisms for operating wings, including those which also operate the fastening for wings in general, e.g. fanlights
    • E05F11/04—Man-operated mechanisms for operating wings, including those which also operate the fastening for wings in general, e.g. fanlights with cords, chains or cables
    • E05F11/06—Man-operated mechanisms for operating wings, including those which also operate the fastening for wings in general, e.g. fanlights with cords, chains or cables in guide-channels
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F15/00—Power-operated mechanisms for wings
    • E05F15/60—Power-operated mechanisms for wings using electrical actuators
    • E05F15/603—Power-operated mechanisms for wings using electrical actuators using rotary electromotors
    • E05F15/611—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for swinging wings
    • E05F15/616—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for swinging wings operated by push-pull mechanisms
    • E05F15/619—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for swinging wings operated by push-pull mechanisms using flexible or rigid rack-and-pinion arrangements
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2201/00—Constructional elements; Accessories therefor
    • E05Y2201/40—Motors; Magnets; Springs; Weights; Accessories therefor
    • E05Y2201/47—Springs
    • E05Y2201/474—Compression springs
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2201/00—Constructional elements; Accessories therefor
    • E05Y2201/60—Suspension or transmission members; Accessories therefor
    • E05Y2201/622—Suspension or transmission members elements
    • E05Y2201/644—Flexible elongated pulling elements
    • E05Y2201/656—Chains
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2201/00—Constructional elements; Accessories therefor
    • E05Y2201/60—Suspension or transmission members; Accessories therefor
    • E05Y2201/622—Suspension or transmission members elements
    • E05Y2201/658—Members cooperating with flexible elongated pulling elements
    • E05Y2201/66—Deflectors; Guides
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2201/00—Constructional elements; Accessories therefor
    • E05Y2201/60—Suspension or transmission members; Accessories therefor
    • E05Y2201/622—Suspension or transmission members elements
    • E05Y2201/658—Members cooperating with flexible elongated pulling elements
    • E05Y2201/672—Tensioners, tension sensors
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2800/00—Details, accessories and auxiliary operations not otherwise provided for
    • E05Y2800/40—Physical or chemical protection
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E05Y2900/10—Application of doors, windows, wings or fittings thereof for buildings or parts thereof
    • E05Y2900/13—Type of wing
    • E05Y2900/148—Windows

Definitions

  • the invention relates to an actuator for window units, in particular of the chain type, for opening and closing the movable part of the window unit to which it is connected.
  • the invention refers to a window unit comprising the above-mentioned chain actuator.
  • Actuators are currently known for window unitswindow units called “chain actuators".
  • chain actuators are used especially to actuate window unitswindow units intended to be placed in positions that are difficult to access, such as for example in the case of skylights.
  • Traditional chain actuators comprise a frame and an articulated chain, having one end which can be fixed to the movable part of the window unit and connected to an actuation device.
  • the actuation device is configured to extend or retract the articulated chain with respect to the frame in such a way that, during operation, the at least partial extension of the articulated chain results in a moving away of the movable part of the window unit with respect to the fixed part of the window unit and the retraction of the articulated chain causes, on the other hand, the moving of the movable part of the window unit towards the fixed part of the latter.
  • the actuation device is therefore configured to allow a bidirectional motion of the articulated chain, which results in the opening and closing of the window unit.
  • the articulated chain is equipped with a plurality of link elements, or more simply links, connected to each other and shaped to be able to abut, when the articulated chain is extended, one on the other so as to be able to mutually support each other to support the weight of the movable part of the window unit and therefore keep it open.
  • the articulated chain when extended with respect to the frame it has the rigidity necessary to transmit to the movable part of the window unit the thrust or traction necessary for movement of the latter.
  • the articulated chain when extended between the fixed part and the movable part of the window unit tends to arrange itself according to an arc or curved trajectory, having an extrados side corresponding to the winding side of the chain.
  • the "concave” side is therefore the winding side of the articulated chain.
  • the articulated chain when the articulated chain is extended, it may happen that its links can orient themselves randomly, with the risk of losing or interrupting the equilibrium condition.
  • An orientation of the links different from the one in which they are configured to reach the equilibrium condition can cause the collapse of the chain articulated on itself, and therefore the sudden and unwanted closing of the movable part of the window unit.
  • This situation can occur, for example, due to strong gusts of wind or accidental impacts.
  • this situation can occur when the articulated chain is subjected to a limited load, that is to say, a limited weight of the movable part of the window unit, and a considerable stroke. In these conditions, it is possible that a sufficient pressure and friction is not exerted on the surfaces of the links which abut each other to keep them engaged and therefore to ensure the condition of equilibrium.
  • the problem underlying the invention is, therefore, that of overcoming the drawbacks of traditional solutions by allowing the articulated chain to be kept in a condition of stable equilibrium when extended between the fixed part and the movable part of the window unit.
  • the problem raised and resolved by the invention is that of ensuring that the articulated chain is positioned between the fixed portion and the movable portion so as to have the stiffness necessary to support the load applied to it.
  • an aim of the invention is therefore to ensure that the mutually abutting links exert a suitable stress on each other to ensure a mutual engagement to reach and maintain a condition of stable equilibrium by the articulated chain.
  • Another aim of the invention is to allow the maintenance of a curved trajectory of the portion of articulated chain extending between the fixed portion and the movable portion of the frame in the equilibrium condition.
  • a further aim of the invention is to provide a chain actuator that is structurally simple, easy to use and easy to install without requiring specialized skills.
  • a further aim of the invention is to allow adjustment of the curvature, that is to say, of the arching, of the portion of the articulated chain extending between the fixed portion and the movable portion of the frame in the equilibrium condition.
  • the numeral 1 denotes in its entirety a chain actuator for a window unit.
  • the window unit 2 can comprise a fixed part 21, which can be installed on an infrastructure, and a movable part 22, connected to the fixed part 21, in order to be movable with respect to each other.
  • the movable part 22 may comprise or consist of a door and the infrastructure may comprise or consist of a wall.
  • the movable part 22 can be moved with respect to the fixed part 21 between an open position, that is to say, spaced from the fixed part, and a closed position, that is to say, close to the fixed part 21.
  • the chain actuator 1 can comprise a frame 30, that is to say, a structural body, having a fixed portion 31, apt to be coupled to the fixed part 21 of the window unit 2 or to the infrastructure, and a movable part 32 apt to be coupled to the movable part 22 of the frame 2.
  • the chain actuator 1 can also comprise an articulated chain 40 connected to the movable portion 32 and to the fixed portion 31 of frame 30 to move the movable portion 32 with respect to the fixed portion 31 to operate the window unit 2 between an open position and a closed position. It follows that the articulated chain 40 is configured to move the movable part 22 of the window unit 2 with respect to the fixed part 21 of the latter so that the movable part 22 can adopt an open position or a closed position. The articulated chain 40 can therefore act as a movement member for the movable portion 32 of the frame 30, and therefore for the movable part 22 of the window unit 2.
  • the articulated chain 40 can be composed of a plurality of segments 41, that is to say, a plurality of links or linked elements, arranged in series between a head segment 41a, connected to the movable portion 32, and a tail segment (not illustrated).
  • the head segment 41a and the tail segment therefore represent the end segments of the articulated chain 40.
  • each segment of the plurality of segments 41 has a development direction S and is connected to at least one further segment, that is to say, to at least one adjacent segment, of the plurality of segments 41 in such a way as to rotate with respect to the latter reversibly around a hinge axis C in a winding direction ⁇ to orient its direction S of extension between a jamming angle and a winding angle.
  • each segment of the plurality of segments 41 is associated with a further segment in a rotatable manner in order to be able to rotate with respect to the latter around a hinge axis C, in a winding direction ⁇ and in a direction opposite to this winding direction ⁇ .
  • each segment of the plurality of segments 41 can arrange itself, with respect to the further segment with which it is rotatably associated, so as to orient its development direction S between a jamming angle and a winding angle. Therefore, the direction of winding ⁇ can be the direction of rotation around the axis C, which leads a segment to orient its relative development direction S in the winding angle. Conversely, a direction opposite to that of winding ⁇ can be the direction of rotation around the axis C, which leads a segment to orient its development direction S in the jamming angle. This direction opposite to the winding direction ⁇ can be a jamming direction.
  • each segment of the plurality of segments 41 has its own development direction S substantially parallel to the development direction S of the further segment so as to exert a stress along an operating direction D, to mutually move the fixed portion 31 and the movable portion 32 of the frame 30.
  • the development direction S of each segment is substantially aligned with the development direction of the further segment S so that the articulated chain 40 can exert a force along the operating direction D. That is to say, when the segments of the articulated chain 40 are in the jamming angle, the articulated chain 40 has sufficient stiffness to exert a stress on the movable portion 31 along this operating direction D.
  • This operating direction D therefore represents a stress direction, such as a traction or a thrust, along which the articulated chain 40 acts on the movable portion 32.
  • the plane in which the jamming angle and the winding angle are defined, or lie, is the operating plane of the articulated chain.
  • the chain actuator 1 can also comprise an actuation device 50 coupled to the fixed portion 31 of the frame 30 and to the articulated chain 40.
  • the actuation device 50 can be actuated to extend, that is to say, extract, the articulated chain 40 from the fixed portion 31 along the operating direction D or to retract the articulated chain 40 with respect to the latter so as to, respectively, move away from or approach the movable portion 32 with respect to the fixed portion 31 and, therefore, open or close the window unit 2.
  • the actuation device 50 can be operated to move the articulated chain 40 bi-directionally with respect to the fixed portion 31, to exert a thrust or traction on the movable portion 32 to, respectively, move the latter away from or approach the fixed portion 31.
  • the chain actuator 1 can also comprise a thrust device 60 associated with the fixed portion 31 and configured to interfere, that is to say, interact, with the articulated chain 40 in a relative operating section, that is to say, a section positioned between the movable portion 32 and the actuation device 50, to force the segments of the articulated chain 40 forming this portion into their mutual jamming angle.
  • the thrust device 60 can be configured in such a way as to force the segments of the articulated chain 40 interposed between the movable portion 32 and the actuation device 50 to arrange themselves in such a way as to orient their development direction S in the jamming angle. In this way, the segments of the articulated chain 40 forming the operating section are forced to reach and maintain the jamming angle.
  • the thrust device 60 is configured to further facilitate the segments of the articulated chain 40 forming the operating section to reach and maintain the jamming angle. It follows that the thrust device 60 opposes a different orientation from the jamming angle of the segments of the articulated chain interposed between the movable portion 32 and the actuation device 50 and which, therefore, ensures that these transmit the stress to the movable portion 32.
  • the winding angle and/or the jamming angle can preferably be defined between the development direction S of the segment and the development direction of a further segment S connected to the latter.
  • the expression "development direction S substantially parallel to the development direction S of the further segment” means that the development direction S of a segment does not diverge from parallelism with respect to the direction S of extension of a further segment.
  • the jamming angle of a segment corresponds to an angle of substantially 180° between the development direction S of the segment itself and that of a further segment connected to it.
  • the above-mentioned expression means that the operating section of the articulated chain 40 is arranged according to a rectilinear trajectory. This rectilinear trajectory therefore extends along the operating direction D.
  • the above-mentioned expression means that the development direction S of a segment does not diverge with respect to the development direction S of a further segment, that is to say, of a segment connected to it, by an angle greater than 2°, preferably not greater than at 1°, even more preferably not higher than 0.8° and most preferably not higher than 0.5°.
  • the development direction S of each segment of the operating section can differ from the parallelism with respect to D.
  • the segments of the operating section that is to say, the segments of the articulated chain 40 interposed between the movable portion 32 and the actuation device 50, in the reciprocal jamming angle they can define an arc trajectory, that is to say, C-shaped in the operating plane.
  • each segment of the articulated chain 40 between the movable portion 32 and the actuation device 50 when each segment of the articulated chain 40 between the movable portion 32 and the actuation device 50 is in the relative jamming angle, they can be arranged according to an arc or C-shaped trajectory in the operating plane.
  • the articulated chain 40 can therefore be configured to be able to arrange itself, between the movable portion 32 and the actuation device 50, according to an arc or C-shaped trajectory in the operating plane.
  • the arc trajectory defines a concave side or extrados side and an opposite convex or intrados side of the articulated chain 40.
  • the operating direction D can correspond to or coincide with the chord of this arc-shaped trajectory.
  • the winding angle is an angle supplementary to the jamming angle.
  • the development direction S of each segment of the operating section is parallel to the operating direction D.
  • the operating direction D substantially corresponds or coincides with the direction of extraction of the articulated chain 40 with respect to the fixed portion 31.
  • the articulated chain 40 in extraction with respect to the fixed portion substantially follows this operating direction D.
  • the operating direction D is the direction along which the articulated chain 40 is configured to unwind between the fixed portion 31 and the movable portion 32.
  • the operating direction D lies in the operating plane, that is to say, in the plane defined by the jamming angle and by the winding angle.
  • each segment of the plurality of segments 41 is configured to be able to rotate or tilt with respect to the further segment, that is to say, with respect to an adjacent segment, only around the hinge axis C and between the jamming angle and the winding angle. That is to say, the articulated chain 40 is not configured to rotate about an axis parallel to or contained in the operating plane. In this way, the rigidity of the articulated chain 40 is ensured in the operating direction D which is necessary to transmit the stress to move the movable part 22, according to a predetermined trajectory, of the window unit 2 with respect to the fixed part of the latter.
  • the segments of the articulated chain 40 can be connected to each other in an articulated manner in sequence between the head segment 41a and the tail segment.
  • the segments of the plurality of segments 41 can be operatively connected in series with each other.
  • each segment of the plurality of segments 41 is hinged to a further segment by means of a rotary connection element, such as a pin, which defines the above-mentioned hinge axis C.
  • the tail segment can be coupled to the fixed portion 31 and the latter can be configured to house at least part of the articulated chain 40 inside itself.
  • the articulated chain 40 can be received completely, with the exception of the head segment 41a, inside the fixed portion 31 of the frame 10 when the window unit 2 is in the closed position.
  • the fixed portion 31 of the frame 30 is equipped with a guided slide channel for the articulated chain 40 which communicates with an environment outside the fixed portion 31 through an opening or outlet mouth.
  • the fixed portion 31 can also comprise a sliding channel along the articulated chain 40 inside the same fixed portion 31. More specifically, this slide channel is configured to internally house the articulated chain 40, when retracted with respect to the frame 30, and to guide it and move it to gradually protrude from the above-mentioned opening or outlet mouth under the action of the actuation device 50.
  • the actuation device 50 can comprise a movement member 51 which interacts with the articulated chain 40 to extend and retract it in the fixed portion 31.
  • the actuation device 50 can comprise a movement member 51 which engages the articulated chain 40 to move it in extraction or retraction with respect to the fixed portion 31.
  • this movement member 51 can be a gearwheel.
  • the actuation device 50 can be housed inside the fixed portion 31.
  • the actuation device 50 may further comprise a motorised system for operating the actuation member.
  • each segment of the plurality of segments 41 with the exception of the head segment 41a can comprise or consist of a connecting rod element.
  • each segment of the plurality of segments 41 with the exception of the head segment 41a can have a first end region and a second end region each pivoted, that is to say, hinged to a respective second end region or first end region of at least one further segment.
  • each segment of the plurality of segments 41 with the exception of the head segment 41a can comprise a first plate element and a second plate element arranged parallel to each other and mutually connected by a pair of pins.
  • Each pin defines a hinge axis C about which a segment can rotate relative to a further segment. The space between each pair of pins defines the pitch of the articulated chain 40 and it can be engaged by the movement member 51.
  • the development direction S is a main development direction of each first plate element and second plate element.
  • each first plate element and each second plate element is delimited by a pair of head surfaces and four lateral surfaces.
  • head surfaces means the surfaces, opposite each other defined on a tangential plane, preferably substantially orthogonal, to the development direction S.
  • each head surface of these segments are facing each other, that is to say reciprocally abutting.
  • each head surface is configured to mutually engage with a head surface of a preceding segment and/or a successive segment.
  • the thrust device 60 can be configured to exert a first thrust force F1, along a thrust direction, on the section of the articulated chain 40 interposed between the movable portion 32 and the actuation device 50, that is to say, on the operating section of the articulated chain, and this thrust direction is intermediate between the movable portion 32 and the movement member 51.
  • the first thrust force F1 generated by the thrust device 60 can act at an intermediate point of the articulated chain between the movable portion 32 and the movement member 51.
  • the articulated chain 40 Since the articulated chain 40 is constrained to the two ends of the above-mentioned section, by the movable portion 32 and by the movement member 51, the first thrust force F1 acting in an intermediate point of the operating section generates a torque or bending moment which forces the segments of the operating segment to rotate with respect to the hinge axis C to reach the jamming angle.
  • the thrust device 60 can be configured to exert the first thrust force F1 along a thrust direction substantially orthogonal to the operating direction D.
  • the thrust device 60 can be fixed to the fixed portion 31.
  • the thrust device 60 is therefore applicable to chain actuators or to already existing installations in order to increase their performance.
  • the thrust device 60 can be integral with the fixed portion 31 or integrated with the fixed portion 31.
  • the thrust device 60 can form a single body, that is to say, that can be manipulated individually, with the fixed portion 31.
  • the thrust device 60 together with the fixed portion 31 can form a box-like body.
  • the thrust device 60 can contribute to delimiting the fixed portion 31 along the perimeter.
  • the thrust device 60 can comprise a wall portion 67, which can form part of a wall of this box-like body.
  • the box-shaped body can be apt to house at least partially the articulated chain 40 and the movement member 51.
  • the pusher device 60 can comprise a base 62, and furthermore it can comprise a pusher 61 and elastic means 63 to spread apart the pusher 61 with respect to the base 62.
  • the base 62 can be integral with the fixed portion 31, that is to say, be part of the fixed portion 31, or can be fixed to the latter.
  • the elastic means 63 can be preloaded so as to generate the above-mentioned first thrust force F1.
  • the elastic means 63 can comprise at least one torsion spring having a first end which abuts against the base 62 and a second end, opposite to the first end which abuts against the pusher 61. This first thrust force F1 is then transmitted to the pusher 61 and from this to the articulated chain 40.
  • the pusher 61 is translatable along the thrust direction.
  • the pusher 61 is translatable with respect to the fixed part 31. Due to the effect of the elastic means 63, the pusher 61 is movable along the thrust direction until it interacts with the articulated chain 40 so as to transmit to this the first thrust force F1.
  • the thrust device 60 can be configured to translate with respect to the fixed portion 31 of the frame and exert the first thrust force F1 on at least one segment of the section of articulated chain 40 between the actuation device 50 and the movable portion 32.
  • the pusher 61, the wall portion 67 and the elastic means 63 are stably associated with each other. It follows that a lengthening in the thrust direction of the elastic means 63 or a contraction of the elastic means 63 in the direction opposite to that of thrust, is followed by a displacement of the pusher 61 and of the wall portion 67 respectively in the thrust direction or in a direction opposite to the thrust direction.
  • the pusher 61 and the base 62 are configured to define between them a recess which receives elastic means 63.
  • the articulated chain 40 can be configured to be penetrated by the pusher 61. That is to say, the articulated chain 40 can be configured in such a way as to be engaged by the pusher 61.
  • the pusher 61 can be configured to guide the articulated chain 40 in the operating direction D and/or in the thrust direction. By penetrating the articulated chain 40, the pusher 61 prevents it from moving in the opposite direction to that set by the actuation device 50. In this way, the articulated chain 40 is thus facilitated to unwind in the operating direction D.
  • the articulated chain 40 is configured to be penetrated by the movement member 51.
  • the pusher 61 can comprise an insertion portion 611, apt to interact with the articulated chain 40.
  • the insertion portion 611 can be the part of the pusher 61 apt to engage or penetrate the articulated chain 40.
  • the insertion portion 611 facilitates the retaining of the pusher 61 in interaction or engagement with respect to the articulated chain 40. More preferably, the insertion portion 611 is configured to insert into the space between the first plate element and the second plate element of the at least one segment.
  • the insertion portion 611 can have a curvilinear profile, preferably circular.
  • the insertion portion 611 can have a peripheral edge that is at least partially curved or rounded.
  • the insertion portion 611 can be disc-shaped. In this way the friction between the pusher 61 and the articulated chain 40 is particularly reduced, especially when it is moved to be extracted or retracted with respect to the fixed portion 31.
  • the insertion portion 611 can be rotated so as to roll on the articulated chain 40 following a movement of the latter. In this way, the friction between the articulated chain 40 and the pusher 61 is further limited when the articulated chain 40 is moved to be extracted or retracted with respect to the fixed portion 31.
  • the pusher 61 can comprise a contact portion 612, which is apt to abut or come into contact with the articulated chain 40.
  • the contact portion 612 therefore, transmits the first thrust force F1 to the articulated chain 40.
  • the contact portion 612 can be apt to abut, that is to say, come into contact with, a side surface of the first and/or second plate element of the at least one segment.
  • the contact portion 612 can have a curvilinear profile, preferably circular.
  • the contact portion 612 can have a peripheral edge that is at least partially curved or rounded.
  • the contact portion 612 can be rotated so as to roll on the articulated chain 40 following a movement of the latter. In this way, the friction between the articulated chain 40 and the pusher 61 is limited when the articulated chain 40 is moved to be extracted or retracted with respect to the fixed portion 31.
  • the insertion portion 611 and/or the contact portion 612 can extend mainly around a rolling axis X, substantially orthogonal to the operating direction D and to the thrust direction S, and can be rotatable about this rolling axis X.
  • the thrust device 60 comprises a limiting element 64, in spaced relation with respect to the pusher 61 along the thrust direction to define with the latter an opening or outlet mouth of the fixed part 31, which can be engaged by the articulated chain 40 to extend from the fixed part 31.
  • the at least one segment of the section of the articulated chain 40 on which the pusher 61 acts, in use is interposed between the pusher 61 and the limiting element 64. That is to say that the at least one segment of the section on which the pusher 61 acts, in use, is the one which engages the outlet mouth.
  • the limiting element 64 can be apt to limit the jamming angle and can comprise a friction reducing element such as a roller or rotatable disc apt to interfere with the articulated chain 40.
  • the limiting element 64 can be apt to limit the rotation of the at least one segment in the jamming direction.
  • the limiting element 64 may furthermore be apt to limit the movement of said at least one segment in the thrust direction.
  • the distance between the limiting element 64 and the pusher 61 can be adjustable.
  • this distance can be adjustable with respect to the tangent of the pinion 51.
  • the chain actuator 1 can comprise an adjustment device 70 configured to adjust or control the amount of the first thrust force F1, generated by the thrust device 60, and transferable to the articulated chain 40.
  • the adjustment device 70 can be configured in such a way as to act as a stop element or limit switch element for the pusher device 60.
  • the adjustment device 70 is apt to interact with the thrust device 60 in such a way as to regulate the translation with respect to the fixed portion 31 along the thrust direction.
  • the adjustment device 70 can act as a stop or limit stop element for the wall portion 67 of the pusher device 60.
  • the adjustment device 70 as it is configured to be able to interact with the wall portion 67 of the thrust device 60, is configured to be able to interact also with the pusher 61 and/or with the elastic means 63 to adjust its translation with respect to the fixed portion 31 along the thrust direction.
  • the adjustment device 70 can be configured so as to limit or regulate a maximum stroke of the pusher 61 and/or to limit or regulate a maximum elongation of the elastic means 43 in the thrust direction.
  • the adjustment device 70 can be, that is to say, configured to adjust or control the maximum distance, or maximum stroke in particular of the pusher 61, with respect to the fixed portion 31 in the thrust direction.
  • the adjustment device 70 is apt to counteract the elongation of the elastic means 63 beyond a certain or predefined maximum length.
  • the adjustment device 70 can be configured to be able to translate in a direction opposite to the thrust direction with respect to the fixed portion 31 of frame 10 and to be able to be fixed to the latter in a position desired by the user.
  • the adjustment device 70 can be fixed to the fixed portion 31 of the frame 30 in a position chosen by the user. As stated above, in this position, the adjustment device acts as a stop or end-of-stroke element.
  • the adjustment device 70 can be fixed or removably associated with the fixed portion 31 in a position selected by the user. For this reason, as mentioned above, the adjustment device 70 is configured to adjust the maximum stroke of the thrust device 60, in particular of the pusher 61 and/or adjust a maximum elongation of the elastic means 63.
  • the adjustment device 70 can comprise an internal portion, housed inside the fixed portion 31, and an external portion which protrudes externally with respect to the fixed portion 31 so as to be able to be gripped or manipulated by a user.
  • a user such as for example an installer, can adjust the position of the adjustment device 70 with respect to the fixed portion 31 and the pusher device 60.
  • the outer portion and the inner portion can be integral with each other so that a displacement of the outer portion is followed by a displacement of the inner portion to limit the maximum stroke of the pusher 61 in the thrust direction.
  • the thrust device 60 comprises at least one slide guide 65 which extends along the thrust direction and in which the fixed portion 31 comprises at least one limit stop element 33 configured to interact with the slide guide 65.
  • the limit stop element 33 opposes the translation of the pusher 61 in the thrust direction beyond a certain predetermined maximum distance, that is to say, the length of the slide guide 65 in the thrust direction.
  • the length of the slide guide 65 in the sliding direction determines the maximum movement of the pusher 61 with respect to the fixed portion 31.
  • the slide guide 65 and the limit switch element 33 also contribute to guiding the movement of the pusher 61 with respect to the fixed portion 31 of the frame 30 in the thrust direction.
  • the sliding guide 65 is made in a wall portion of the thrust device 60.
  • the slide guide 65 can be configured as a through opening defining a slot, having a predefined length along the thrust direction.
  • the limit stop element 33 can be configured as a protruding element protruding inside the through opening to partially engage it. In this way the pusher 61 can slide in the thrust direction with respect to the limit switch element 33 until a peripheral edge which delimits the through opening does not make contact with the limit switch element 33.
  • the slide guide 65 is a first slide guide and the pusher 61 further comprises at least one second slide guide 66 which, like the first slide guide 65, extends along the thrust direction.
  • the fixed portion 31 of the frame 30 comprises at least a second limit switch element 33 configured to interact with the second slide guide 65 and to define a maximum stroke of the pusher 61.
  • the first slide rail 65 and the second slide rail 66 have equal length in the thrust direction.
  • the second slide guide 65 and the second limit switch element 33' further contribute to guiding the movement of the pusher 61 with respect to the fixed portion 31 of the frame 30 in the thrust direction.
  • the second sliding guide 66 is made in a wall portion of the thrust device 60.
  • the first slide guide 65 and the second slide guide 65 are arranged so that the outlet mouth is interposed between them. Even more preferably, the first slide guide 65 and the second slide guide 65 are arranged symmetrically with respect to the outlet mouth.
  • the adjustment device 70 being configured to interact with the thrust device 60 to limit the stroke or translation in the thrust direction, consequently allows the translation of the first slide guide 65 and/or of the second slide guide 66 to be limited, with respect to the fixed portion 31 and in particular with respect to the first limit stop element 33 and the second limit stop element 33', respectively. In this way, it is possible to adjust the stroke of the first guide 65, and of the second guide 66 if present, with respect to the first limit stop element 33, and to the second limit stop element 33' if present.
  • the movable portion 32 can comprise a fixing element 35, apt to be fixed to the movable part 22 of the window unit 20, and an attachment element 34, associated with the fixing element 35 so as to be able to rotate with respect to the latter around a first axis of rotation A, transversal to the operating direction D, furthermore, according to this aspect, the head segment 41a of the articulated chain 40 can be connected to the attachment element 34. Since the articulated chain 40, through the attachment element 34, is associated with the fixing element 35, in this way, it acquires a greater degree of freedom of movement with respect to the movable part 22 of the window unit 2 to which it is associated.
  • the angle, that is to say, the inclination, between the operating plane of the articulated chain 40 and the movable part 22 of the window unit can vary freely.
  • the movement of the latter is made more free with respect to the trajectory followed by the movable part 22 so as to limit the stresses that the articulated chain 40 could undergo in a transversal direction to the operating plane and to which it would be subject if it were unable to rotate freely with respect to the movable part 22 of the window unit.
  • the unwanted stresses on the articulated chain 40 are limited.
  • the expression “transversal” means that the first axis of rotation A is substantially perpendicular to the operating direction D. Even more preferably, the expression “substantially perpendicular” means that the first axis of rotation A forms with the operating direction D an angle of not less than 75 degrees, even more preferably not less than 88 degrees.
  • the head segment 41a is connected to the attachment element 34 in such a way as to rotate around a second rotation axis B parallel to the hinge axis C and transversal to the first rotation axis A.
  • the rotation axis B is parallel to the hinge axis C of each segment of the plurality of segments 41 and is therefore orthogonal to the operating plane of the articulated chain 40.
  • the movable portion 32 is also configured in such a way as to allow rotation of the head segment 41a with respect to the second rotation axis B up to a maximum angle A max in the jamming direction ⁇ to determine a bending moment M suitable for determining an arching of the section of articulated chain 40 between the head segment 41 and the at least one segment engaged by the actuation device 50.
  • the head segment 41a can rotate to a limited extent up to the maximum angle A max .
  • the further segments of the articulated chain 40 are then forced to follow the rotation of the head segment 41a and to reach the relative jamming angle.
  • the movable portion 32 is configured to rotate so as to impose a rotation of the segments forming the section between the movable portion 32 and the actuation device 50 around the relative hinge axis C until it reaches the relative jamming angle thus determining the arching. Thanks to the above-mentioned bending moment M, the segments of the section of articulated chain 40 between the head segment 41 and the at least one segment engaged by the actuation device 50 can be forced to rotate around the respective hinge axis C in the jamming direction ⁇ to reach the relative jamming angle.
  • the arching of the operating portion of the articulated chain 40 occurs when the segments of the articulated chain 40 and the operating conditions of the latter, in particular the load applied to the chain articulated 40 by the movable part of the window unit, allow it. Since in the jamming angle the articulated chain 40 exerts the stress along the operating direction D, the movable portion 32 is therefore configured in such a way as to favour a stable spacing with the fixed part 31.
  • the movable portion 32 is configured so as to induce a rotation of each segment of the operating section of the articulated chain 40 until the respective jamming angle is reached. Since in the jamming angle the segments of the articulated chain 40 are able to exert the stress along the operating direction D, the movable portion 32 is therefore configured in such a way as to favour a stable spacing with the fixed part 31.
  • the head portion 41a also reaches the respective jamming angle.
  • the maximum angle A max is between 2° and 15°, more preferably between 2° and 10°, more preferably between 2° and 8°.
  • the operating direction D lies on the operating plane.
  • the maximum angle A max reached by the head segment 41a can be such as to impart the bending moment M on the articulated chain 40 to maintain a stable spacing between the movable portion 32 and between the fixed part 31.
  • the head segment 41a in the maximum angle A max determines the transfer of a second thrust force F2 on the articulated chain 40 which forces the segments of the operating section into the jamming angle.
  • the segments of the section of articulated chain 40 interposed between the movable portion 32 and the actuation device 50, that is to say, of the operating section are forced to arrange themselves according to the above-mentioned curved trajectory in the operating plane of the articulated chain 40.
  • the second thrust force F2 corresponds to the weight force of the movable part 22.
  • the second thrust force F2 is therefore used to generate the above-mentioned bending moment M.
  • the movable portion 32 can further comprise connecting means 36 apt to mutually connect the attachment element 34 and the head segment 41a.
  • these connecting means 36 comprise a first hole 361 and a first pin 362, inserted in the first hole 361, which act in conjunction to define the second axis of rotation B.
  • the connecting means comprise a slotted hole or a guide 363 and a second pin 364, inserted in the second hole or guide 363 and wherein the slotted hole or guide 363 defines the maximum angle A max .
  • the second hole or the guide 363 defines the amount of relative rotation between the attachment element 34 and the head segment 41a.
  • the first hole 361 and the slotted hole or guide 363 are made in correspondence with the head segment 41a, while the first pin 362 and the second pin 364 are integral with the attachment element 34.
  • the first pin 362 is spaced apart from the second pin 364 to define an arm of a stress apt to subject the head segment 41a to the above-mentioned bending moment M which is suitable for causing an arching of the segments of the operating section of the articulated chain 40, to maintain a stable spacing between the movable part 22 and the fixed part 21.
  • the distance between the first pin 362 and the second pin 364 defines the arm of the second thrust force F2 applied to the head segment 41a to impose a rotation on the latter in the jamming direction such as to orient the development direction of this in the jamming angle.
  • the second thrust force F2 applied to the head segment 41a is preferably orthogonal to the first thrust force F1.
  • the first plate-like portion 411 extends mainly along the direction S of extension of the head segment 41a.
  • the second plate-like portion 412 extends along a direction substantially perpendicular to the development direction S.
  • the first plate-like portion 411 is rotatably coupled to a further segment so as to be able to rotate around a hinge axis C.
  • the attachment element 34 is configured to at least partially house the head segment 41a and the connecting means 36.
  • the attachment element 34 is a cylindrical shell.
  • the fixing element 35 is C-shaped and defines a central region apt to receive the attachment element 34.
  • the fixed portion 31 is also connected in a rotatable manner to the fixed part 21 of the window unit 2.
  • the fixed portion 31 is connected so as to be able to rotate with respect to the fixed part 21 around a third rotation axis E parallel to the first rotation axis A.
  • the operating plane of the articulated chain 40 can rotate with respect to the movable part 32 and the fixed part 31.
  • the invention also relates to a window unit which comprises a chain actuator 1 as described above.
  • the fixed part 21 and the movable part 22 of this window unit 2 are interconnected by a chain actuator as described above.
  • the fixed part 21 and the movable part 22 are mutually hinged along an opening and closing axis which is parallel to the first axis of rotation A.
  • the window unit 2 can comprise a first end 23 and a second end 24, opposite each other, and wherein the fixed part 21 and the movable part 22 are mutually hinged at the first end 23.
  • the chain actuator 1 is associated with the second end 24, so as to allow rotation of the movable part 21 with respect to the fixed part 23 around the opening and closing axis.
  • the distance between the first end 23 and the second end 24 defines the radius of the trajectory in the arc of a circumference which the movable part 21 describes between the open position and the closed position, and vice versa.

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  • Power-Operated Mechanisms For Wings (AREA)
EP22213237.5A 2021-12-13 2022-12-13 Kettenantrieb für eine fenstereinheit und fenstereinheit, die den kettenantrieb enthält Pending EP4194656A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT202100031154 2021-12-13

Publications (1)

Publication Number Publication Date
EP4194656A1 true EP4194656A1 (de) 2023-06-14

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ID=80461579

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22213237.5A Pending EP4194656A1 (de) 2021-12-13 2022-12-13 Kettenantrieb für eine fenstereinheit und fenstereinheit, die den kettenantrieb enthält

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EP (1) EP4194656A1 (de)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB579621A (en) * 1944-06-11 1946-08-09 Worcester Windshields & Caseme Improvements in means for adjusting or regulating vehicle windshields and other angularly-movable panels
DE29816102U1 (de) * 1998-09-08 1998-12-17 D + H Mechatronic, Dingfelder + Kern GmbH, 22949 Ammersbek Vorrichtung zum Bewegen von radial und linear geführten Elementen
DE202012001762U1 (de) * 2011-02-28 2012-04-19 Jofo Pneumatik Gmbh Kettenantrieb für einen Stellantrieb zum automatischen Öffnen und Schließen einer Lüftungsvorrichtung
EP3848614A1 (de) * 2020-01-10 2021-07-14 K+G Pneumatik GmbH Mit einem kettenantrieb betätigbare schiebesteife schubkette

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB579621A (en) * 1944-06-11 1946-08-09 Worcester Windshields & Caseme Improvements in means for adjusting or regulating vehicle windshields and other angularly-movable panels
DE29816102U1 (de) * 1998-09-08 1998-12-17 D + H Mechatronic, Dingfelder + Kern GmbH, 22949 Ammersbek Vorrichtung zum Bewegen von radial und linear geführten Elementen
DE202012001762U1 (de) * 2011-02-28 2012-04-19 Jofo Pneumatik Gmbh Kettenantrieb für einen Stellantrieb zum automatischen Öffnen und Schließen einer Lüftungsvorrichtung
EP3848614A1 (de) * 2020-01-10 2021-07-14 K+G Pneumatik GmbH Mit einem kettenantrieb betätigbare schiebesteife schubkette

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