(19)
(11) EP 2 383 413 B1

(12) EUROPEAN PATENT SPECIFICATION

(45) Mention of the grant of the patent:
20.04.2016 Bulletin 2016/16

(21) Application number: 11163929.0

(22) Date of filing: 27.04.2011
(51) International Patent Classification (IPC): 
E05F 15/63(2015.01)
E05F 15/72(2015.01)
E05F 15/71(2015.01)
E05F 5/02(2006.01)

(54)

Vent operating mechanism

Entlüftungsbetriebsmechanismus

Mécanisme de commande d'évent


(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

(30) Priority: 27.04.2010 GB 201006989

(43) Date of publication of application:
02.11.2011 Bulletin 2011/44

(73) Proprietor: Glazing Vision Limited
Diss Norfolk IP22 4NX (GB)

(72) Inventors:
  • Dunn, Jeremy
    Halstead Essex CO9 4EE (GB)
  • Gibson, Graham
    Cambridgeshire CB5 0AG (GB)
  • Lempriere, Nigel
    Maldon Essex CM9 6FF (GB)

(74) Representative: Sanderson & Co. 
D2 Knowledge Gateway Nesfield Road
Colchester, Essex CO4 3ZL
Colchester, Essex CO4 3ZL (GB)


(56) References cited: : 
DE-U1- 29 710 369
FR-A1- 2 639 057
US-A1- 2007 271 848
DE-U1-202007 005 957
JP-A- 7 217 306
   
       
    Note: Within nine months from the publication of the mention of the grant of the European patent, any person may give notice to the European Patent Office of opposition to the European patent granted. Notice of opposition shall be filed in a written reasoned statement. It shall not be deemed to have been filed until the opposition fee has been paid. (Art. 99(1) European Patent Convention).


    Description


    [0001] This invention relates to an operating mechanism for a vent assembly for a building and in its preferred aspects to an operating mechanism for a smoke vent for the roof of a building. Though the operating mechanism of this invention could be used in other applications, it will in the following be described solely in relation to a mechanism for opening and closing a smoke vent.

    [0002] Smoke vents are frequently fitted to commercial, public and industrial building in order to allow smoke to escape in the event of a fire, thereby enhancing the ability of people to evacuate the building before being overcome by the smoke and fumes of the fire. Such a smoke vent is fitted with an automatic mechanism to effect opening of the vent should there be a fire in the building. A control unit may receive signals from fire or smoke detectors and drives an actuator associated with the smoke vent, to effect opening of that vent. A smoke vent of this kind may equally be fitted to a residential dwelling and it is expected that this will increasingly be adopted.

    [0003] A typical smoke vent has a frame secured to the roof of the building and a panel hinged along one edge to a side of the frame, the panel normally closing the opening defined by the frame. An actuator to perform hinging movement of the panel may be disposed centrally of the panel to act between the panel and the frame, or a pair of actuators may be disposed one to each side of the frame. Various designs of smoke vents are described for example in FR2639057A1, DE29710369U1, JP07217306A, DE202007005957U1, US2007/271848A1, US3728956 and US4473979.

    [0004] It is important that a roof mounted smoke vent has good thermal insulating properties in order to minimise heat loss through the vent at times when the interior of the building is heated for environmental comfort for the occupants, and there is no fire. To that end, the hinged panel may be double-glazed and secured to a thermally insulating frame. A double-glazed panel is relatively heavy especially for a large smoke vent and if the panel is hinged along one edge and the operating mechanism is connected to the panel part way along a side thereof the load on the operating mechanism and which the operating mechanism must move can be very large.

    [0005] Though in the past a smoke vents may have been used which opened through only an acute angle, modern building regulations require a hinged panel of a smoke vent to be moved through more than 90°, to ensure that there is adequate venting of smoke no matter what the direction of the wind or whether the vent is mounted on one side face of a pitch roof. Typically, the regulations require the panel of a smoke vent to be movable through at least 135° from its fully closed setting. In the case of a double-glazed panel, this presents particular engineering problems to ensure that once the panel has moved over centre (i.e. more than 90° from the fully closed setting in the case of a vent on a substantially flat roof) the operating mechanism is able to hold the panel at the required setting and moreover to pull the panel back to the 90° setting, before resisting self-closing of the panel under gravity.

    [0006] The above problems dictate that a relatively strong and so massive and powerful operating mechanism must be employed and yet the space and weight capacity available in the vicinity of a roof vent may be very restricted. This invention aims at providing an operating mechanism for a building vent assembly which is primarily intended to serve as a smoke vent and so which is configured to open through more than 90° from the fully closed setting.

    [0007] According to this invention, there is provided a mechanism for effecting opening and closing movement of a panel hinged to a frame therefor, which mechanism comprises the features of claim 1.

    [0008] The configuration of the mechanism of this invention allows a connected vent panel to be moved through a relatively large obtuse angle (and typically in the region of 120° to 145°) from the fully closed setting where the panel closes the frame of the vent. The mechanism can be constructed to be relatively compact so that the mechanism may be accommodated within the frame of a roof vent. Moreover, the mechanism may withstand relatively large loads particularly at the extremes of movement, such that the mechanism may support a relatively heavy roof vent panel moved from its closed setting through an obtuse angle and then pull the opened panel back over centre and control movement of the panel to its closed setting. The load on the mechanism will be increased if snow is lying on the panel, or in freezing conditions, when ice may be holding the panel in its closed position. Also, the mechanism must be able to open the panel and hold it open even in strong windy conditions.

    [0009] In order to allow proper operation of the mechanism, the coupling of the mechanism connector to a vent panel allows the connector to slide with respect to the panel in a direction normal to the axis of hinging movement of the panel, while retaining the connector in engagement with the panel. In a preferred embodiment, a connected panel defines a slot extending in a direction normal to the axis of hinging movement of the panel and the connector is received in that slot while being restrained against movement out of the slot in a direction normal to the plane of the panel. Conveniently, the panel has a T-shaped slot and the connector has a slide element located in that slot.

    [0010] Again, to allow proper operation of the mechanism, the connector is pivoted to the support.

    [0011] In a preferred embodiment, the support may have an extension beyond the connection thereto of the parallelogram linkage, the connector being mounted on that extension of the support.

    [0012] The elongate base member of the mechanism preferably is of channel-shaped cross-section having a base wall with upstanding side walls and the parallelogram linkage comprises two pairs of links arranged with the links of each pair on opposed side walls of the base member. The links of each pair are pivoted about common axes both to the side wall of the base member and to the support.

    [0013] The power drive assembly may comprise an electric motor drivingly connected to a lead screw rotatably mounted to the side walls of the base member, so as to extend therealong. With such a power drive assembly, the slider may comprise a nut threadingly engaged with the lead screw and guided to slide along the length of the base member. For example, the side walls of the channel-section base member may have opposed slots extending therealong, the nut having a pair of laterally-projecting guide pins received in the slots.

    [0014] The vent operating mechanism may have a control system therefor and which controls the operation of the power drive assembly, either under manual or automatic control on the basis of an input from at least one environmental sensor. That sensor may sense at least one of air temperature, concentration of smoke particles in the air and air contamination. In the case of a panel having a pair of operating mechanisms, one to each side of the frame supporting a hinged panel, the control system should serve to keep the two mechanisms operating in synchronism, so as to avoid any twisting of the hinged panel, during operation.

    [0015] This invention extends to an operating mechanism as described above in combination with a frame assembled from a plurality of frame members and a panel hinged to one of the frame members, wherein the elongate base member is attached to or forms a part of a frame member extending normally to that frame member to which the panel is hinged.

    [0016] Further, this invention extends to a combination of an operating mechanism and a frame as just-described, together with a panel hinged to one side of the frame and the connector of the mechanism connected to the panel, for sliding movement with respect thereto in a direction normal to the hinging axis of the panel. The panel may comprise a frame supporting a double-glazed unit in which case the connector of the mechanism connects to the frame of the panel. In a typical application for a smoke vent, two operating mechanisms may be provided, one to each side of the panel and respectively connected to the sides of the panel frame.

    [0017] By way of example only, one specific embodiment of a roof vent incorporating an operating mechanism of this invention and having a thermal break frame will now be described in detail, reference being made to the accompanying drawings in which:-

    Figure 1 is an isometric view of the complete roof vent, when the panel thereof is in its fully opened setting;

    Figure 2 is a side view of the roof vent of Figure 1 and showing the movable panel in a partly opened and a fully opened setting;

    Figure 3 is a detail view on an enlarged scale of a cross-section through the roof vent frame together with part of the double-glazed panel;

    Figures 4 and 5 are isometric views of the operating mechanism when set to have the panel fully closed and fully opened, respectively; and

    Figures 6 and 7 are side views of the operating mechanism when set to have the panel fully closed and fully opened, respectively.



    [0018] The roof vent comprises a generally rectangular frame 10 having four sides 11,12,13,14, a double-glazed panel 15 being hinged along one edge 16 to side 11 of the frame. The panel 15 is of the same shape as the frame 10 and of an appropriate size to co-operate therewith. The panel is movable between a fully closed setting (not shown) where the underside of the panel engages the upper surface of the frame and a fully opened setting where the panel has been hinged through approximately 140°, as shown in Figure 2. The frame 10 is constructed from inner and outer metallic frame members 17,18 a thermal break being provided between those frame members. The outer frame member defines a chamber 19 along each side of the frame 11 and a pair of operating mechanisms for the panel are located in the chambers 19 of the two opposed frame sides 12,14 adjoining the hinge side 11. These various components will now be described in more detail.

    [0019] Referring initially to Figure 3, the configuration of the frame 10 and the panel 15 is shown in more detail. The inner frame member 17 is an L-shaped aluminium extrusion having limbs 21,22. The outer frame member 18 is generally of channel-shaped cross-section having a base wall 23 and upstanding flanks 24,25, the base wall 23 being opposed to limb 21 of the inner frame member and flank 24 being opposed to limb 22. Elongate blocks 26,27 of high performance insulating material are located between the opposed parts of the inner and outer frame members, for the full length thereof. Further, the inner and outer frame members are maintained at the required separation by thermal break elongate strips 28,29,30,31 of a plastics material such as a polyamide. Each long edge of strips 28 and 31 is formed with an enlarged head which is received in a corresponding groove 32 in the associated frame member. The grooves are then crimped on to the heads of the strips so as to grip the strips and maintain the inner and outer frame members in the required relative disposition. Though the long edges of strips 29 and 30 are also enlarged, those heads are received in simple grooves to facilitate assembly whilst still providing support.

    [0020] A skirt 34 for the outer frame member 18 is bonded to a flange 35 projecting from the base wall 23 of the outer frame member and depends downwardly from that frame member. The frame rests on roof members (not shown) defining an opening through the roof and is secured to those members by fastenings received in a channel 36 formed in the lower edge of the skirt. Once secured in this way, the channel 36 may be closed by a cap strip (not shown). A further channel 37 is formed in leg 21 of the inner frame member, to receive an elastomeric sealant for effecting a seal to the roof members.

    [0021] The double-glazed panel 15 has a rectangular frame 39 of extruded aluminium sections joined together at the corners and supporting a double-glazing unit having inner and outer glass panes 40,41 held at the required separation by a spacer bar 42. Each frame section defines an inwardly-projecting flange 43 to which the inner glass pane 40 is adhered by a bead 44 of adhesive. A foam tape strip 45 extends along the flange 43, further from the pane edge than the bead 44, and serves to support the pane during setting of the adhesive. A high-temperature silicon rubber gasket 46 is attached to the free edge of the flange 43, that gasket having a lip 47 to effect a seal against the inner surface of the inner pane 40, the gasket also having a cylindrical resiliently deformable portion 48 for effecting a seal to the upper edges of limb 22 and flank 24 of the inner and outer frame members, respectively, when the panel is in its closed setting.

    [0022] Each panel frame section also defines an upper surface 50 to which the outer glass pane 41 is adhered by a bead 51 of adhesive. The periphery of the outer pane 41 is sealed to the frame section by a silicon weather-seal strip 52. A further resiliently deformable gasket 53 is fitted to a lower surface 54 of the frame section to co-operate with the upper edge of flank 25 of the outer frame member 18. Figure 3 shows the panel 15 in its fully closed setting where the gaskets 46 and 53 partially compressed against the corresponding upper edges of the inner and outer frame members 17,18, thereby effecting a seal thereto.

    [0023] Accommodated in the chambers 19 of the sides 12 and 14 of the frame 10 are respective opening mechanisms, to perform hinging movement of the panel 15 from its fully closed setting to its fully opened setting. Each mechanism has a channel section 56 provided with tabs 57 projecting laterally from below the base of that channel section, which tabs are adapted to be received in a T-groove 58 formed in the base wall 23 of the outer frame member 18. Two pins 59 are arranged one at each end of the channel section 56 and serve to hold the section at the required location with respect to the length of the receiving frame member.

    [0024] An electric motor 60 is arranged within the channel section 56 adjacent one end and drives a lead screw 61 rotatably carried in bearings 62 mounted in the channel section. A nut 63 is threaded on to the lead screw and is slidably disposed within the channel section, the nut having laterally projecting pivot pins 64 received in elongate slots 65 in the side walls 66 of the channel section.

    [0025] Pivoted to each side wall 66 of the channel section 56 and at spaced locations are first and second links 69,70, there being a pair of first links 69 and a pair of second links 70 with the links of each pair pivoted about a common axis on the opposed side walls of the base member. Links 69 are connected together by cross-members 71 and links 70 by cross-members 72. The other ends of the links 69,70 are pivoted to a support 73 at the same spacing, such that the links, support 73 and the channel section 56 together form a parallelogram linkage in which the support remains parallel to the channel section, irrespective of the pivoting of the links. The support 73 is also constructed from a pair of arms connected together by a cross-member 74. An operating arm 75, again in the form of a pair of parallel links connected together by a cross-member 76, is pivoted at one end to the pivot pins 64 of the nut 63 and at its other end to each of the two links 69, adjacent the support 73. A connector 77 is pivoted to an extension of the support 73 and is adapted for connection to the panel 15, that connector being received in a T-slot 78 (Figure 3) formed in the lower surface 54 of the panel frame. The T-slot 78 is relieved at 79 (Figure 1) to allow the connector to be engaged in the T-slot 78 during assembly of the roof vent, whereafter the connector may slide along that part of the T-slot between the relieved part and the hinged edge of the panel, as dictated by the geometry of the mechanism when operated.

    [0026] Also shown in Figures 1, 2 and 4 to 7 are bump-stops 80 disposed adjacent the side 13 of the frame, remote from the hinged side 11. The panel 15 engages those bump-stops 80 when closed and so the compression of the gaskets 46 and 53 is limited thereby. The bump-stops are adjustable, in order to allow optimum sealing of the panel when closed.

    [0027] Though not shown, a control unit is provided for the operating mechanisms, to control the supply of power to the electric motors 60. Environmental sensors are connected to the control unit, monitoring for example smoke particles in the air at various places within the building in which the vent is installed. Sensors may also be provided for air temperature and also contaminants that may be present in the air, such as hydrocarbons. The control unit serves to cause operation of the motors 60 to open the vent by hinging the panel from its closed position, in the event that a sensed parameter exceeds a pre-set value.

    [0028] The control system should drive in synchronism the electric motors 60 of the two mechanisms so as to avoid any twisting of the hinged panel 15 during operation. Thus may be achieved by fitting hall effect sensors to the motors and which provide outputs to the control system, so that the speeds of operation of the two motors may be controlled to be the same.

    [0029] The mechanism described above is configured to perform hinging movement of the double-glazed panel 15, between a fully closed setting (Figure 3) and a fully opened setting (Figure 2), or to a chosen setting between those extremes, also shown in Figure 2. Operation of the motor rotates the lead screw 61 which drives the nut 63 along the length of the channel section 56 in a direction depending on the sense of rotation of the lead screw. This changes the geometry of the operating arm 75 with respect to the lead screw and the pair of links 69, so operating the parallelogram linkage. The exact configuration of the links 69,70, operating arm 75 and the support 73 is determined so that the full required range of movement of the panel 15 may be achieved, corresponding to the full movement of the nut 63 along the slots 65 of the channel section 56. Moreover, the configuration of the mechanism allows a relatively high force to be achieved for moving the panel between its fully closed and fully opened settings, both when opening the vent and when closing the vent.


    Claims

    1. A vent operating mechanism for effecting opening and closing movement of a panel (15) hinged to a frame (10) therefor, which mechanism comprises:

    - an elongate base member (56) for attachment directly or indirectly to the frame (10) or forming a part thereof;

    - a support (73);

    - a parallelogram linkage (69,70) connecting the support (73) to the base member (56);

    - a slider (63) arranged for movement along the base member (56);

    - a power drive assembly (60,61) to effect said movement of the slider (63);

    - an operating arm (75) connecting the slider (63) to the support (73) or the parallelogram linkage (69,70), such that movement of the slider effects hinging movement of the parallelogram linkage (69,70); and

    - a connector (77) mounted on the support (73) and arranged for connection to the panel (15) hinged to the frame (10);

    characterised in that the connector (77) is pivoted to the support (73), the connection of the connector (77) to the panel (15) allowing the connector (77) to slide with respect to the panel (15) in a direction normal to the axis of hinging movement of the panel (15) whereby operation of the power drive assembly (60,61) moves the slider (63) along the base member (56) so changing the relationship between the base member (56) and the support (73) by varying the geometry of the parallelogram linkage (69,70), and the movement of the support (73) relative to the elongated base member (56) slides the connector (77) along the connected panel (15) to cause the panel (15) to effect hinging movement relative to the frame (10).
     
    2. A mechanism as claimed in claim 1, wherein the connected panel (15) defines a slot (74) extending in a direction normal to the axis of hinging movement of the panel and the connector (77) is received in said slot and is restrained against movement out of the slot in a direction normal to the plane of the panel.
     
    3. A mechanism as claimed in claim 2, wherein the slot (74) of a connected panel (15) is of T-shaped cross-section.
     
    4. A mechanism as claimed in any of the preceding claims, wherein the support (73) has an extension beyond the connection thereto of the parallelogram linkage (70) and the connector (77) is mounted on the extension of the support.
     
    5. A mechanism as claimed in any of the preceding claims, wherein the base member (56) is of channel-shaped cross-section having a base wall with upstanding side walls (66) and the parallelogram linkage (69,70) comprises two pairs of links arranged with the links of each pair on opposed side walls (66) of the base member.
     
    6. A mechanism as claimed in claim 5, wherein the power drive assembly (60,61) is mounted between the side walls (66) of the base member (56).
     
    7. A mechanism as claimed in claim 6, wherein the power drive assembly comprises an electric motor (60) drivingly connected to a lead screw (61) rotatably mounted between the side walls (66) of the base member (56) to extend therealong.
     
    8. A mechanism as claimed in claim 7, wherein the slider comprises a nut (63) threadingly engaged with the lead screw (61) and guided to slide along the base member (56).
     
    9. A mechanism as claimed in claim 8, wherein the side walls (66) of the channel-section base member (56) have opposed slots (65) extending therealong and the nut (63) has a pair of laterally-projecting guide pins (64) received in the slots.
     
    10. A mechanism as claimed in any of the preceding claims in combination with the frame (10) assembled from a plurality of frame members (17,18) and the panel (15) directly hinged to one of the frame members (17,18), wherein the elongate base member (56) is attached to a frame member (18) extending normally to said frame member to which the panel (10) is directly hinged.
     
    11. A mechanism as claimed in any of the preceding claims in combination with a control system for the power drive assembly (60,61) and arranged to effect the operation thereof, either under manual or automatic control depending on an input from at least one environmental sensor.
     
    12. A mechanism as claimed in claim 11, wherein the environmental sensor senses at least one of air temperature, concentration of smoke particles in air and air contamination.
     


    Ansprüche

    1. Lüftungsbetriebsmechanismus zum Bewirken einer öffnenden und schließenden Bewegung einer Platte (15), die schwenkbar an einem Rahmen (10) dafür angebracht ist, wobei der Mechanismus aufweist:

    - ein längliches Basisteil (56), das zur direkten oder indirekten Anbringung an dem Rahmen (10) vorgesehen ist oder einen Teil davon bildet,

    - einen Träger (73),

    - eine Parallelogrammaufhängung (69, 70), die den Träger (73) mit dem Basisteil (56) verbindet,

    - einen Schieber (63), der zur Bewegung entlang des Basisteils (56) ausgestaltet ist,

    - eine Kraftantriebsanordnung (60, 61), um Bewegung des Schiebers (63) zu bewirken,

    - einen Betätigungsarm (75), der den Schieber (63) mit dem Träger (73) oder mit der Parallelogrammaufhängung (69, 79) verbindet, so dass Bewegung des Schiebers eine schwenkende Bewegung der Parallelogrammaufhängung (69, 70) bewirkt, und

    - ein Verbindungselement (77), das an dem Träger (73) gelagert ist und zur Verbindung mit der Platte (15) ausgestaltet ist, die schwenkbar an dem Rahmen 810) angebracht ist,

    dadurch gekennzeichnet, dass das Verbindungselement (77) schwenkbar an dem Träger (73) angebracht ist, wobei die Verbindung des Verbindungselements (77) mit der Platte (15) es dem Verbindungselement (77) erlaubt, in Bezug auf die Platte (15) in einer Richtung senkrecht zu der Achse der Schwenkbewegung der Platte (15) verschoben zu werden, wodurch der Betrieb der Kraftantriebsanordnung (60, 61) den Schieber (63) entlang des Basisteils (56) bewegt, um so die Beziehung zwischen dem Basisteil (56) und dem Träger (73) zu verändern, indem die Geometrie der Parallelogrammaufhängung (69, 70) variiert wird, und die Bewegung des Trägers (73) relativ zu dem länglichen Basisteil (56) das Verbindungselement (77) entlang der verbundenen Platte (15) verschiebt, um zu bewirkenm, dass die Platte eine Schwenkbewegung relativ zu dem Rahmen (10) ausführt.
     
    2. Mechanismus wie in Anspruch 1 beansprucht, wobei die verbundene Platte (15) einen Schlitz (74) definiert, der in einer Richtung senkrecht zu der Achse der Schwenkbewegung der Platte verläuft, und wobei das Verbindungselement (77) in dem Schlitz aufgenommen ist und gegen Bewegung aus dem Schlitz heraus in einer Richtung senkrecht zur Ebene der Platte gesichert ist.
     
    3. Mechanismus wie in Anspruch 2 beansprucht, wobei der Schlitz (74) einer verbundenen Platte (15) im Querschnitt T-förmig ist.
     
    4. Mechanismus wie in einem der vorhergehenden Ansprüche beansprucht, wobei der Träger (73) eine Verlängerung über die Verbindung mit der Parallelogrammaufhängung (70) hinaus hat und das Verbindungselement (77) auf der Verlängerung des Trägers gelagert ist.
     
    5. Mechanismus wie in einem der vorhergehenden Ansprüche beansprucht, wobei das Basisteil (56) einen kanalförmigen Querschnitt mit einer Bodenwand mit aufwärtsstehenden Seitenwänden (66) hat und die Parallelogrammaufhängung (69, 70) zwei Paare von Stangen aufweist, wobei die Stangen jedes Paars an gegenüberliegenden Seitenwänden (66) des Basisteils angeordnet sind.
     
    6. Mechanismus wie in Anspruch 5 beansprucht, wobei die Kraftantriebsanordnung (60, 61) zwischen den Seitenwänden (66) des Basisteils (56) angebracht ist.
     
    7. Mechanismus wie in Anspruch 6 beansprucht, wobei die Kraftantriebsanordnung einen Elektromotor (60) aufweist, der antriebsmäßig mit einer Gewindespindel (61) verbunden ist, die drehbar zwischen den Seitenwänden (66) des Basisteils (56) gelagert ist, um sich daran entlang zu erstrecken.
     
    8. Mechanismus wie in Anspruch 7 beansprucht, wobei der Schieber eine Mutter (63) aufweist, die im Gewindeeingriff mit der Gewindespindel (61) steht und geführt ist, um entlang des Basisteils (56) zu gleiten.
     
    9. Mechanismus wie in Anspruch 8 beansprucht, wobei die Seitenwände (66) des kanalförmigen Basisteils (56) gegenüberliegende, sich daran entlang erstreckende Schlitze (65) haben und die Mutter (63) ein Paar von seitlich vorstehenden Führungsstiften (64) aufweist, die in den Schlitzen aufgenommen sind.
     
    10. Mechanismus wie in einem der vorhergehenden Ansprüche beansprucht in Kombination mit dem Rahmen (10), der aus einer Vielzahl von Rahmenteilen (17, 18) aufgebaut ist, und der Platte (15), die schwenkbar direkt an einem der Rahmenteile (17, 18) angebracht ist, wobei das längliche Basisteil (56) an einem Rahmenteil (18) befestigt ist, das senkrecht zu demjenigen Rahmenteil verläuft, an dem die Platte (10) direkt schwenkbar angebracht ist.
     
    11. Mechanismus wie in einem der vorhergehenden Ansprüche beansprucht in Kombination mit einem Steuersystem für die Kraftantriebsanordnung (60, 61), das dazu eingerichtet ist, um deren Betrieb zu bewirken, entweder unter manueller oder automatischer Kontrolle, abhängig von einer Eingabe von wenigstens einem Umgebungssensor.
     
    12. Mechanismus wie in Anspruch 11 beansprucht, wobei der Umgebungssensor wenigstens eines von Lufttemperatur, Konzentration von Rauchpartikeln in der Luft und Luftverunreinigung erfasst.
     


    Revendications

    1. Mécanisme de commande d'évent pour réaliser un mouvement d'ouverture et de fermeture d'un panneau (15) articulé sur un cadre (10), le mécanisme comprenant :

    - un élément de base allongé (56) destiné à être attaché directement ou indirectement au cadre (10) ou formant une partie du cadre ;

    - un support (73) ;

    - un parallélogramme articulé (69, 70) reliant le support (73) à l'élément de base (56) ;

    - un coulisseau (63) agencé pour se déplacer le long de l'élément de base (56) ;

    - un ensemble d'entraînement (60, 61) pour entraîner le mouvement du coulisseau (63) ;

    - un bras de commande (75) reliant le coulisseau (63) au support (73) ou au parallélogramme articulé (69, 70), de manière à ce que le déplacement du coulisseau entraîne une articulation du parallélogramme articulé (69, 70) ;
    et

    - un connecteur (77) monté sur le support (73) et agencé pour être attaché au panneau (15) articulé sur le cadre (10) ;

    caractérisé en ce que le connecteur (77) est en liaison pivot par rapport au support (73), la liaison du connecteur (77) au panneau (15) permettant au connecteur (77) de coulisser par rapport au panneau (15) dans une direction orthogonale à l'axe d'articulation du panneau (15), l'actionnement de l'ensemble d'entraînement (60, 61) déplaçant le coulisseau (63) le long de l'élément de base (56) et modifiant ainsi la position relative du support (73) par rapport à l'élément de base (56) en faisant varier la géométrie du parallélogramme articulé (69, 70), et le déplacement du support (73) relativement à l'élément de base allongé (56) faisant coulisser le connecteur (77) le long du panneau (15) afin d'articuler le panneau (15) par rapport au cadre (10).
     
    2. Mécanisme selon la revendication 1, dans lequel le panneau (15) définit une rainure (74) s'étendant dans une direction orthogonale à l'axe d'articulation du panneau et le connecteur (77) est accueilli dans ladite rainure (74) et est empêché de sortir de ladite rainure dans une direction orthogonale au plan du panneau.
     
    3. Mécanisme selon la revendication 2, dans lequel la rainure (74) d'un panneau (15) présente une section en T.
     
    4. Mécanisme selon l'une quelconque des revendications précédentes, dans lequel le support (73) présente un prolongement s'étendant au-delà de sa liaison avec le parallélogramme articulé (70) et le connecteur (77) est monté sur le prolongement du support.
     
    5. Mécanisme selon l'une quelconque des revendications précédentes, dans lequel l'élément de base (56) présente une section en forme de canal avec une paroi de base et des parois latérales verticales (66) et le parallélogramme articulé (69, 70) comprend deux paires d'éléments de liaison agencés avec les éléments de liaison de chaque paire sur les parois latérales opposés (66) de l'élément de base.
     
    6. Mécanisme selon la revendication 5, dans lequel l'ensemble d'entraînement (60, 61) est monté entre les parois latérales (66) de l'élément de base (56).
     
    7. Mécanisme selon la revendication 6, dans lequel l'ensemble d'entraînement comprend un moteur électrique (60) relié à une vis mère (61) pour l'entraîner, la vis mère étant montée en rotation entre les parois latérales (66) de l'élément de base (56) le long desquelles elle s'étend.
     
    8. Mécanisme selon la revendication 7, dans lequel le coulisseau comprend un écrou (63) en liaison hélicoïdale avec la vis mère (61) et guidé pour coulisser le long de l'élément de base (56).
     
    9. Mécanisme selon la revendication 8, dans lequel les parois latérales (66) de l'élément de base à section en forme de canal (56) présentent des rainures opposées (65) s'étendant sur leur long et l'écrou (63) comporte une paire de pions de guidage (64) faisant saillie latéralement et étant accueillis dans les rainures.
     
    10. Mécanisme selon l'une quelconque des revendications précédentes en combinaison avec le cadre (10) assemblé à partir de plusieurs éléments de cadre (17, 18) et le panneau (15) directement articulé sur l'un des éléments de cadre (17, 18), l'élément de base allongé (56) étant attaché à un élément de cadre (18) s'étendant orthogonalement audit élément de cadre auquel le panneau (10) est articulé directement.
     
    11. Mécanisme selon l'une quelconque des revendications précédentes en combinaison avec un système de commande pour l'ensemble d'entraînement (60, 61) et agencé pour le commander soit par une commande manuelle ou automatique en fonction d'une entrée d'au moins un capteur d'environnement.
     
    12. Mécanisme selon la revendication 11, dans lequel le capteur d'environnement capte au moins une température d'air, une concentration en particules de fumée dans l'air, ou une contamination de l'air.
     




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    Cited references

    REFERENCES CITED IN THE DESCRIPTION



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    Patent documents cited in the description