GB2479883A - Vent operating mechanism - Google Patents
Vent operating mechanism Download PDFInfo
- Publication number
- GB2479883A GB2479883A GB1006989A GB201006989A GB2479883A GB 2479883 A GB2479883 A GB 2479883A GB 1006989 A GB1006989 A GB 1006989A GB 201006989 A GB201006989 A GB 201006989A GB 2479883 A GB2479883 A GB 2479883A
- Authority
- GB
- United Kingdom
- Prior art keywords
- panel
- support
- base member
- movement
- frame
- 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.)
- Withdrawn
Links
- 230000007246 mechanism Effects 0.000 title claims abstract description 63
- 239000000779 smoke Substances 0.000 claims abstract description 22
- 230000000694 effects Effects 0.000 claims abstract description 11
- 238000011109 contamination Methods 0.000 claims abstract description 3
- 230000007613 environmental effect Effects 0.000 claims description 5
- 239000002245 particle Substances 0.000 claims description 3
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 239000011324 bead Substances 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000005355 Hall effect Effects 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
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
- 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
- E05F15/63—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for swinging wings operated by swinging arms
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C2/00—Fire prevention or containment
- A62C2/06—Physical fire-barriers
- A62C2/24—Operating or controlling mechanisms
- A62C2/241—Operating or controlling mechanisms having mechanical actuators and heat sensitive parts
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D13/00—Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage ; Sky-lights
- E04D13/03—Sky-lights; Domes; Ventilating sky-lights
- E04D13/0325—Sky-lights; Domes; Ventilating sky-lights provided with ventilating means
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
- E05D7/00—Hinges or pivots of special construction
- E05D7/06—Hinges or pivots of special construction to allow tilting of the members
-
- 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
- E05F1/00—Closers or openers for wings, not otherwise provided for in this subclass
- E05F1/002—Closers or openers for wings, not otherwise provided for in this subclass controlled by automatically acting means
- E05F1/006—Closers or openers for wings, not otherwise provided for in this subclass controlled by automatically acting means by emergency conditions, e.g. fire
-
- E05F15/124—
-
- 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
- E06B1/00—Border constructions of openings in walls, floors, or ceilings; Frames to be rigidly mounted in such openings
- E06B1/04—Frames for doors, windows, or the like to be fixed in openings
- E06B1/12—Metal frames
- E06B1/14—Metal frames of special cross-section not used
- E06B1/16—Hollow frames
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
- F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
- F24F13/14—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre
- F24F13/1486—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre characterised by bearings, pivots or hinges
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F7/00—Ventilation
- F24F7/02—Roof ventilation
-
- 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
- E05F15/622—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for swinging wings operated by push-pull mechanisms using screw-and-nut mechanisms
-
- 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
- E05F15/70—Power-operated mechanisms for wings with automatic actuation
- E05F15/71—Power-operated mechanisms for wings with automatic actuation responsive to temperature changes, rain, wind or noise
-
- 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
- E05F15/70—Power-operated mechanisms for wings with automatic actuation
- E05F15/72—Power-operated mechanisms for wings with automatic actuation responsive to emergency conditions, e.g. fire
-
- 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
- E05Y2201/708—Sliders
-
- 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
- E05Y2900/152—Roof windows
- E05Y2900/154—Skylights
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Architecture (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Air-Flow Control Members (AREA)
- Power-Operated Mechanisms For Wings (AREA)
Abstract
A vent mechanism used to open and close a panel hinged to a frame comprises an elongate base 56 attached to the frame (10, fig 1) and a parallelogram linkage connecting a support 73 to the base. A power driven slider 63 moves along the base and moves an operating arm 75 connected to the slider which is connected to the support or parallelogram linkage so that movement of the slider effects variable hinging movement of the linkage. Movement of the linkage further causes hinging movement of the panel via a connector 77 mounted on the support and connected to the panel. The panel may have a T-shaped slot in which the connector is received. The connector is pivoted to the support. The base may be channel-shaped receiving a pair of linkages. The power drive may be an electric motor 60 connected to a lead screw 61. The slider may be a nut engaging with the lead screw. Two mechanisms may be provided and operated manually or automatically via a control system receiving an input from a temperature, smoke or air contamination sensor in the event of a fire.
Description
VENT OPERATING MECHANISM
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.
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.
is 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.
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.
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 900, 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.
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.
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: -an elongate base member for attachment directly or indirectly to the frame or forming a part thereof; -a support; -a parallelogram linkage connecting the support to the base member; -a slider arranged for movement along the base member; -a power drive assembly to effect said movement of the slider; -an operating arm connecting the slider to the support or the parallelogram linkage, such that movement of the slider effects hinging movement of the linkage; and -a connector mounted on the support and arranged for connection to a panel; is whereby operation of the power drive assembly moves the slider along the base member so changing the relationship between the base member and the support by varying the geometry of the parallelogram linkage, and the movement of the support relative to the base member causes a connected panel to effect hinging movement.
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 1200 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.
In order to allow proper operation of the mechanism, the coupling of the mechanism connector to a vent panel may allow 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.
Again, to allow proper operation of the mechanism, the connector may be pivoted to the support, which may have an extension beyond the connection thereto of the parallelogram linkage, the connector being mounted on that extension of the support.
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 watts 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.
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.
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.
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.
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.
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.
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 l6to 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 1400, 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.
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.
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.
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.
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.
Accommodated in the chambers 19 of the sides 12 and 14 of the frame is 10 are respective opening mechanisms, to perform hinging movement of the panel 1 5 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.
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 -10-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.
Pivoted to each side wall 66 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 is 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.
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 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.
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.
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.
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 -12 -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. -13-
Claims (15)
- CLAIMS1. A mechanism for effecting opening and closing movement of a panel hinged to a frame therefor, which mechanism comprises: -an elongate base member for attachment directly or indirectly to the frame or forming a part thereof; -a support; -a parallelogram linkage connecting the support to the base member; -a slider arranged for movement along the base member; -a power drive assembly to effect said movement of the slider; -an operating arm connecting the slider to the support or the parallelogram linkage, such that movement of the slider effects hinging movement of the linkage; and -a connector mounted on the support and arranged for connection to a panel; whereby operation of the power drive assembly moves the slider along the base member so changing the relationship between the base member and the support by varying the geometry of the parallelogram linkage, and the movement of the support relative to the base member causes a connected panel to effect hinging movement.
- 2. A mechanism as clatmed fn claim 1, wherefn the connection of the connector to a panel allows the connector to slide with respect to the panel in a direction normal to the axis of hinging movement of the panel.
- 3. A mechanism as claimed in claim 2, wherein a connected panel defines a slot extending in a direction normal to the axis of hinging movement of the -14 -paneL and the connector is received in said sLot and is restrained against movement out of the slot in a direction normal to the plane of the panel.
- 4. A mechanism as claimed in claim 3, wherein the slot of a connected panel is of T-shaped cross-section.
- 5. A mechanism as claimed in any of the preceding claims, wherein the connector is pivoted to the support.
- 6. A mechanism as claimed in any of the preceding claims, wherein the support has an extension beyond the connection thereto of the parallelogram linkage and the connector is mounted on the extension of the support.
- 7. A mechanism as claimed in any of the preceding claims, wherein the base member 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.
- 8. A mechanism as claimed in claim 7, wherein the power drive assembly is mounted between the side watts of the base member.
- 9. A mechanism as claimed in claim 8, wherein the power drive assembly comprises an electric motor drivingly connected to a lead screw rotatably mounted between the side walls of the base member to extend therealong.
- 10. A mechanism as claimed in claim 9, wherein the slider comprises a nut threadingly engaged with the lead screw and guided to slide along the base member. -15-
- 11. A mechanism as cLaimed in cLaim 10, wherein the side waLLs of the channel-section base member have opposed slots extending therealong and the nut has a pair of laterally-projecting guide pins received in the slots.
- 12. A mechanism as claimed in any of the preceding claims 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 a frame member extending normally to said frame member to which the panel is hinged.
- 13. A mechanism as claimed in any of the preceding claims in combination with a control system for the power drive assembly and arranged to effect the operation thereof, either under manual or automatic control depending on an input from at least one environmental sensor.
- 14. A mechanism as claimed in claim 13, wherein the environmental sensor senses at least one of air temperature, concentration of smoke particles in air is and air contamination.
- 15. A mechanism as claimed in cLaim 1 and substantially as hereinbefore described with reference to and as illustrated in the accompanying drawings.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1006989A GB2479883A (en) | 2010-04-27 | 2010-04-27 | Vent operating mechanism |
EP11163929.0A EP2383413B1 (en) | 2010-04-27 | 2011-04-27 | Vent operating mechanism |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1006989A GB2479883A (en) | 2010-04-27 | 2010-04-27 | Vent operating mechanism |
Publications (2)
Publication Number | Publication Date |
---|---|
GB201006989D0 GB201006989D0 (en) | 2010-06-09 |
GB2479883A true GB2479883A (en) | 2011-11-02 |
Family
ID=42270879
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1006989A Withdrawn GB2479883A (en) | 2010-04-27 | 2010-04-27 | Vent operating mechanism |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP2383413B1 (en) |
GB (1) | GB2479883A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3524895A1 (en) | 2018-02-13 | 2019-08-14 | Sament Ltd. | Roof ventilation system |
US20220145688A1 (en) * | 2019-02-26 | 2022-05-12 | Gdx, Llc | Fixture for venting a roof |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102619430A (en) * | 2012-03-22 | 2012-08-01 | 刘权熠 | Connecting-rod opening and closing mechanism used for casement doors and windows and suspended sash windows |
CN106812408A (en) * | 2017-03-26 | 2017-06-09 | 遂宁市长丰机械科技有限公司 | Glass window opening/closing device |
CN110359804B (en) * | 2018-03-26 | 2024-04-26 | 沈阳恒生装饰工程有限公司 | Super-large angle window-turning mechanical linkage opening structure |
CN113719214A (en) * | 2021-09-08 | 2021-11-30 | 南京威玛斯特自动机械有限公司 | Electric window opener with ventilation function |
EP4365385A1 (en) | 2022-11-07 | 2024-05-08 | VKR Holding A/S | Roof window comprising actuator attached at glass unit by means of adhesive connection |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2468848A1 (en) * | 1979-06-07 | 1981-05-08 | Souchier Georges | Rapid opening smoke outlet - has cover attached to parallelogram arms with drive ensuring complete disengagement and smoke dispersal |
FR2492953A2 (en) * | 1979-06-07 | 1982-04-30 | Souchier Georges | Ventilating and smoke exhausting assembly - is supported on two pairs of arms and has second opening frame with translucid dome |
FR2639057A1 (en) * | 1988-11-17 | 1990-05-18 | Gecib | Roof vent |
GB2227790A (en) * | 1988-12-21 | 1990-08-08 | Sanwa Shutter Corp | Automatically shutting skylight when it rains |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3728956A (en) | 1971-05-24 | 1973-04-24 | Jenn Air Corp | Smoke and heat relief vent |
CA1070471A (en) | 1976-05-18 | 1980-01-29 | Ronald R. Bruhm | Frost barrier for skylights and the like |
JP3146825B2 (en) | 1994-01-31 | 2001-03-19 | 松下電工株式会社 | Window openers |
DE29710369U1 (en) * | 1997-06-13 | 1998-10-29 | Stürmann GmbH & Co., 40699 Erkrath | Opening / closing device for in particular outward-opening tilting or rotating sashes |
US20070271848A1 (en) * | 2004-03-12 | 2007-11-29 | Glen Wolf | Integrated power window and skylight operating systems |
DE202007005957U1 (en) * | 2007-02-19 | 2008-06-26 | Liebherr-Hausgeräte Ochsenhausen GmbH | Fridge and / or freezer |
-
2010
- 2010-04-27 GB GB1006989A patent/GB2479883A/en not_active Withdrawn
-
2011
- 2011-04-27 EP EP11163929.0A patent/EP2383413B1/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2468848A1 (en) * | 1979-06-07 | 1981-05-08 | Souchier Georges | Rapid opening smoke outlet - has cover attached to parallelogram arms with drive ensuring complete disengagement and smoke dispersal |
FR2492953A2 (en) * | 1979-06-07 | 1982-04-30 | Souchier Georges | Ventilating and smoke exhausting assembly - is supported on two pairs of arms and has second opening frame with translucid dome |
FR2639057A1 (en) * | 1988-11-17 | 1990-05-18 | Gecib | Roof vent |
GB2227790A (en) * | 1988-12-21 | 1990-08-08 | Sanwa Shutter Corp | Automatically shutting skylight when it rains |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3524895A1 (en) | 2018-02-13 | 2019-08-14 | Sament Ltd. | Roof ventilation system |
US20220145688A1 (en) * | 2019-02-26 | 2022-05-12 | Gdx, Llc | Fixture for venting a roof |
US11946303B2 (en) * | 2019-02-26 | 2024-04-02 | Gdx, Llc | Fixture for venting a roof |
Also Published As
Publication number | Publication date |
---|---|
GB201006989D0 (en) | 2010-06-09 |
EP2383413A2 (en) | 2011-11-02 |
EP2383413A3 (en) | 2013-04-03 |
EP2383413B1 (en) | 2016-04-20 |
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Legal Events
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WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |