EP3714116A1 - Roof window with improved spring assembly - Google Patents
Roof window with improved spring assemblyInfo
- Publication number
- EP3714116A1 EP3714116A1 EP18812048.9A EP18812048A EP3714116A1 EP 3714116 A1 EP3714116 A1 EP 3714116A1 EP 18812048 A EP18812048 A EP 18812048A EP 3714116 A1 EP3714116 A1 EP 3714116A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- spring
- roof window
- sledge
- spring assembly
- hook element
- 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.)
- Granted
Links
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- 238000010168 coupling process Methods 0.000 claims abstract description 67
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- 230000007246 mechanism Effects 0.000 claims abstract description 15
- 238000009434 installation Methods 0.000 claims abstract description 5
- 230000007704 transition Effects 0.000 claims description 5
- 230000000717 retained effect Effects 0.000 claims description 2
- 238000004140 cleaning Methods 0.000 description 5
- 230000014759 maintenance of location Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 229920006362 Teflon® Polymers 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000007853 buffer solution Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
Classifications
-
- 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
- E04D13/035—Sky-lights; Domes; Ventilating sky-lights characterised by having movable parts
- E04D13/0351—Sky-lights; Domes; Ventilating sky-lights characterised by having movable parts the parts pivoting about a fixed axis
- E04D13/0354—Sky-lights; Domes; Ventilating sky-lights characterised by having movable parts the parts pivoting about a fixed axis the parts being flat
-
- 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
-
- 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
- E04D13/035—Sky-lights; Domes; Ventilating sky-lights characterised by having movable parts
- E04D13/0357—Sky-lights; Domes; Ventilating sky-lights characterised by having movable parts the parts pivoting about an axis supported on a hinged frame or arms
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
- E05D15/00—Suspension arrangements for wings
- E05D15/40—Suspension arrangements for wings supported on arms movable in vertical planes
- E05D15/406—Suspension arrangements for wings supported on arms movable in vertical planes with pivoted arms and sliding guides
-
- 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
- E05F1/08—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings
-
- 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
- E05F1/08—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings
- E05F1/10—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings for swinging wings, e.g. counterbalance
- E05F1/1041—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings for swinging wings, e.g. counterbalance with a coil spring perpendicular to the pivot axis
- E05F1/105—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings for swinging wings, e.g. counterbalance with a coil spring perpendicular to the pivot axis with a compression spring
- E05F1/1058—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings for swinging wings, e.g. counterbalance with a coil spring perpendicular to the pivot axis with a compression spring for counterbalancing
-
- 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
- E05F1/08—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings
- E05F1/10—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings for swinging wings, e.g. counterbalance
- E05F1/1041—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings for swinging wings, e.g. counterbalance with a coil spring perpendicular to the pivot axis
- E05F1/1066—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings for swinging wings, e.g. counterbalance with a coil spring perpendicular to the pivot axis with a traction spring
- E05F1/1075—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings for swinging wings, e.g. counterbalance with a coil spring perpendicular to the pivot axis with a traction spring for counterbalancing
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05Y2201/00—Constructional elements; Accessories therefore
- E05Y2201/20—Brakes; Disengaging means, e.g. clutches; Holders, e.g. locks; Stops; Accessories therefore
- E05Y2201/214—Disengaging means
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05Y2201/00—Constructional elements; Accessories therefore
- E05Y2201/40—Motors; Magnets; Springs; Weights; Accessories therefore
- E05Y2201/404—Motors; Magnets; Springs; Weights; Accessories therefore characterised by the function
- E05Y2201/41—Motors; Magnets; Springs; Weights; Accessories therefore characterised by the function for closing
- E05Y2201/414—Motors; Magnets; Springs; Weights; Accessories therefore characterised by the function for closing for the initial closing movement
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05Y2201/00—Constructional elements; Accessories therefore
- E05Y2201/60—Suspension or transmission members; Accessories therefore
- E05Y2201/622—Suspension or transmission members elements
- E05Y2201/624—Arms
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05Y2600/00—Mounting or coupling arrangements for elements provided for in this subclass
- E05Y2600/50—Mounting methods; Positioning
- E05Y2600/52—Toolless
- E05Y2600/522—Axial stacking
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05Y2600/00—Mounting or coupling arrangements for elements provided for in this subclass
- E05Y2600/50—Mounting methods; Positioning
- E05Y2600/52—Toolless
- E05Y2600/528—Hooking, e.g. using bayonets; Locking
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- 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—Application of doors, windows, wings or fittings thereof for buildings or parts thereof characterised by the type of wing
- E05Y2900/148—Windows
- E05Y2900/152—Roof windows
Definitions
- the present invention relates to a roof window, particularly for installation in an inclined roof surface, comprising a primary frame, at least one secondary frame, such as a sash and/or an intermediate frame, and a lifting device including a lifting arm inserted between the primary frame and the at least one secondary frame, the lifting arm having a first end rotatably connected with a sledge system slidably connected with the primary frame in a sledge guidance and a second end rotatably connected with the at least one secondary frame, the lifting device furthermore including a spring assembly configured to be coupled to the sledge system and in turn the first end of the lifting arm by means of a coupling mechanism, such that the spring assembly is able to assume an uncoupled condition and a coupled condition relative to the sledge system, the spring assembly comprising a main spring system and a buffer spring system inserted between the main spring system and the lifting device.
- Windows for installation in an inclined roof surface include the pivoting type hinged at or near the centre, the top-hinged type, and finally the roof windows that are top-hinged during normal operation but which pivot for cleaning.
- Examples of top-hung windows that pivot for cleaning are for instance disclosed in Applicant’s WO-A-89/10460, EP 0 733 146 B1 , EP 1 873 323 B1 and EP 2 762 665 A2.
- the sash structure is connected with an intermediate frame with frame arms, which in the closed position of the window are positioned between the upper parts of the frame and sash side members, and which during normal use of the window as a top-hung window follow the sash side members.
- auxiliary or buffer spring to modulate the spring force during the opening and closing movement of the sash relative to the frame.
- an auxiliary spring Between the slide shoe and the lifting spring is an auxiliary spring, the pre- stressing of which can be adjusted in dependence on the roof inclination, by a manually operated adjusting element, for supplementing the spring force from the lifting spring within a given range of the opening angle of the window.
- the buffer spring system comprises an outer spring and an inner spring of substantially identical pre-defined lengths, and that the inner spring is at least partially accommodated inside the outer spring so that the axes of the respective extend substantially co-axially.
- the spring assembly in which the spring characteristics of the buffer system are improved in that the outer and inner springs together have a spring constant that is larger than a single spring of the same length.
- the spring assembly has larger stiffness meaning that easy operation of roof windows having a heavier sash is made possible.
- the improved spring characteristics entail that the length dimensions of the lifting device may be kept, rather than providing the buffer spring as a single, longer spring.
- the outer spring and the inner spring may have mutually different spring constants. This is in particular advantageous as the inner spring may easily be formed with a reduced thread dimension and diameter compared to the outer spring.
- the outer spring and the inner spring of the buffer spring system have mutually opposite thread directions. This has surprisingly proven to render particularly satisfactory spring characteristics of the buffer spring system.
- Fig. 1 is a perspective view of a roof window, seen from the interior side and in an open position;
- Fig. 2 is a perspective view of details of a roof window with a lifting device, in a first embodiment of the invention and corresponding to the open position of the roof window of Fig. 1 ;
- Fig. 3 is an isometric view of the details of the roof window of Fig. 2, in a closed position of the window;
- Fig. 4 is a partially exploded view of the details of Fig. 3;
- Fig. 5 is an isometric view of the spring assembly shown in Fig. 3;
- Fig. 6 is a partial isometric view, on a larger scale, of the spring assembly shown in Fig. 5;
- Fig. 7 is a partial exploded isometric view of some elements of Fig. 6;
- Figs 8a to 8e are isometric views of the elements of Fig. 7;
- Fig. 9a is a partial isometric view, on a larger scale, of details shown in Fig. 3;
- Fig. 9b is an exploded, partial perspective view of details of the lifting device in another embodiment of the invention.
- Figs 10 and 11 are partial isometric views of details of the lifting device of the roof window in a second embodiment of the invention.
- Figs 12a to 12h are schematic partial side views of an embodiment of the roof window of the invention, during coupling and uncoupling of the lifting device;
- Figs 13 a-13b, 14a-14b and 15a-15b are perspective views of details of the roof window in the second embodiment
- Fig. 16 shows a schematic perspective view of details of a roof window in a third embodiment of the invention.
- Fig. 17 shows a schematic side view of details of a roof window in a still further embodiment of the invention.
- Figs 18a-18e are views corresponding to Figs 8a-8e, respectively, of details of the roof window in a third embodiment
- Figs 19a-19b are views corresponding to Figs 13a-13b, respectively, of details of the roof window in the third embodiment
- Fig. 20a is a view corresponding to Fig. 14a of details of the roof window in the third embodiment
- Fig. 20b is a partial perspective view of details of the roof window in the third embodiment.
- Figs 21 to 24 show partial or full, exploded, or sectional views of details of a roof window in yet another embodiment of the invention.
- FIG. 1 the general configuration of a roof window which is top-hinged during normal operation and which pivots for cleaning is shown. Such a window is shown and described in further detail in Applicant’s above-mentioned European patent No. 0 733 146 B1 , the contents of which are hereby incorporated by reference.
- a lifting device 10 is indicated, which, referring now also to Fig. 2 to 9a, forms part of a first embodiment of the roof window according to the present invention.
- the roof window comprises a primary frame in the form of a stationary frame 1 configured for installation in an inclined roof surface.
- At least one secondary frame is connected to the stationary frame 1 , in the embodiment shown a first secondary frame in the form of a sash 2 carrying a pane 4, and a second secondary frame in the form of an intermediate frame 3.
- the intermediate frame 3 is fastened to the stationary frame at a top mounting fitting 5, and the sash 2 is hinged at the top of the roof window, via the intermediate frame 3 to the stationary frame 1 , to render the roof window top-hung during normal operation.
- the sash 2 is also pivotally connected to the intermediate frame 3 in order to be able to rotate the sash 2 to provide access to the outside of the pane 4, for instance for cleaning purposes.
- the intermediate frame 3 is provided with a frame hinge part 6 of pivot hinge fitting.
- a lifting device 10 is composed of a spring arrangement 20 and a sledge system 30 which cooperate to assist in the opening of the window, that is, bringing the secondary frame or frames to an angled position relative to the primary frame.
- the user operates the operating device of the window in the form of a handle 7 at the bottom member of the sash 2.
- the bias of the spring arrangement 20 of the lifting device 10 acts on a lifting arm 14 inserted between the stationary frame 1 and the intermediate frame 3.
- the lifting arm 14 exerts a moment on the intermediate frame 3 and hence to the sash relative to an axis through a top hinge pin 11.
- Closing the window from the open position entails the opposite movements of the sash 2 and relevant parts of the lifting device 10.
- a similar lifting device may be provided at each side of the roof window.
- the roof window is provided with a ventilation device 8 acting to allow passage of air also in the closed position of the window.
- the lifting arm 14 has a first end 12 rotatably connected with a sledge system 30, which in turn is slidably connected with the primary frame 1 in a sledge guidance 16, and a second end 13 rotatably connected with the at least one secondary frame 3, the lifting device 10 furthermore including a spring assembly 20 configured to be coupled to the sledge system 30.
- the spring assembly 20 is in turn configured to be connected to the first end 12 of the lifting arm 14 by means of a coupling mechanism, such that the spring assembly 20 is able to assume an uncoupled condition and a coupled condition relative to the sledge system 30.
- the coupling mechanism comprises a first coupling member 21 associated with the spring assembly 20 and is adapted to cooperate with a second coupling member associated with the sledge system 30.
- the second coupling member comprises a sledge 31 forming part of the sledge system 30, and the sledge 31 includes receiving means configured to cooperate with the first coupling member 21 in the coupled condition.
- the first coupling member includes a hook element 21 and the second coupling member including its receiving means formed in the sledge system 30.
- the hook element 21 is configured to assume at least a non-engagement position and an engagement position
- the coupling mechanism furthermore comprising a coupling plate 25 arranged to assume at least a first position corresponding to the coupled condition and a second position corresponding to the uncoupled condition, the coupling plate 25 allowing the hook element 21 to assume said non- engagement position. Operation of the presently preferred embodiments will be described in further detail in connection with Figs 12a to 12h.
- the hook element 21 of the first coupling member has at least one hook portion 214 facing the sledge system 30. This provides for a particularly easy and safe coupling procedure.
- the hook element 21 as shown has a U-shaped configuration including a base plate portion 212 and two flange portions 213, one hook portion 214 being provided at each of the flange portions 213.
- the tension rod 22 of the spring assembly 20 includes a rod portion 221 extending substantially along the length of the spring assembly 20, and a head portion 222 facing the hook element 21 , the tension rod 22 being provided with at least one inclined portion 223, 224 at the transition between the head portion 222 and the rod portion 221.
- the hook element 21 of the first coupling member is provided with an aperture 211 in the base plate portion 212 to allow passage of the tension rod 22 such that the head portion 222 of the tension rod 22 is retained within the U-shape at the front side of the base plate portion 212 and the rod portion 221 at the back side.
- the coupling plate 25 of the coupling mechanism has a base portion 252 which in the assembled position is located at the back side of the base plate portion 212 of the hook element 21 , i.e. opposite the sledge system 30, and is provided with an oblong aperture 251 to allow passage of the rod portion 221 of the tension rod 22, and wherein the coupling plate 25 is slidable in the plane of the base portion 252 substantially perpendicularly to the rod portion 221 such that when in a bottom position, the hook portion 21 is capable of assuming its engagement position, and in a top position, the hook portion 21 is kept in its non-engagement position.
- the coupling plate 25 is here provided with a bottom flange 253 formed on the base portion 252 to abut on the at least one inclined portion 223 in the non-engagement position via the base plate portion 212. This brings about the actual retention of the hook element 21 in its non- engagement position in the embodiment shown.
- the coupling plate 25 is provided with a cut-out 254 at the top of the base portion 252 to form at least one, preferably two, upstanding lugs 255. This eases the application of tools and the re-entry into the coupling position. Furthermore, the cut-out 254 allows for accommodation of reinforcement or stiffening elements for the sash.
- connection between the first coupling member and the spring assembly 20 may be carried out in any suitable manner as long as it fulfils the requirements due to the relatively large forces involved.
- a robust structure as in the present embodiment includes an angle element 23 provided near the head portion 222 of the tension rod 22, having an aperture 231 to allow passage of the rod portion 221 of the tension rod 22.
- an end piece 24 is furthermore provided, having an aperture
- the end piece 24 furthermore having an upstanding wall 242, on which a protrusion 243 is formed to surround the aperture 241 of the end piece 24, and wherein two protruding flanges 244 are provided at either side of the upstanding wall
- the angle element 23 is provided with an upstanding leg 232 and a bottom leg 233, the aperture 231 of the angle element 23 being provided in the upstanding leg 232, and wherein two protruding flanges 234 are provided substantially in parallel to the bottom leg 233 and each defining a gap 235 relative to the upstanding leg 232.
- the end piece 24 is positioned with the back side of its upstanding wall 242 abutting the front side of the upstanding leg 232 of the angle element 23, between the bottom leg 233 and the protruding flanges 234, and wherein the base portion 252 of the coupling plate 25 is received slidably in the track 245 of the end piece and the respective gaps 235 of the angle element 23.
- each flange portion 213 of the U-shaped the hook element 21 here includes an apex 210 at the front end, a rounded transition 215 between the apex 210 and the hook portion 214, a bottom edge portion 218 between the hook portion 214 and the base plate portion 212, an opposite top portion 217, and at least one inclined edge portion 216, 219 between the top portion 217 and the apex 210.
- the components of the coupling mechanism shown in Figs. 18a-18e have a substantially corresponding configuration as in Figs. 8a-8e.
- the hook element 21 is provided with two grooves 217a in the top portion 217 to provide for possible further guidance.
- the protruding flanges 244 of the end piece 24 are provided with a respective rib portion 244a and two bent flange portions 246 on the side facing the spring arrangement 20.
- the angle element 23 is provided with enlarged aperture sections 231 a adjoining the aperture 231 in order to accommodate the bent flange portions 246. In this way, easy assembly and safe retention in use is achieved.
- the coupling plate 25 is provided with friction-increasing portions 256, for instance in the form of riffling or other surface treatment to increase the friction to enhance the retention of the coupling plate 25 in the desired position.
- Corresponding friction-increasing portions may be provided on the opposite side of the base portion 252.
- the friction-increasing portions may also be provided as separate elements for instance a film or the like applied to the base portion 252.
- the components of the coupling mechanism need to be dimensioned suitably relative to each other in order to avoid excess frictional forces but at the same time allow for proper operation.
- sledge system 30 Further details of the sledge system 30 are shown in the second and third embodiments in Figs 10 to 11 and 13a to 15b, and Figs. 18a-20b. Elements having the same or analogous function as in the first embodiment carry the same reference numerals.
- the sledge 31 of the sledge system 30 comprises a bottom portion 310, a first wall portion 311 and a second wall portion 312, one receiving recess 314 being preferably provided at each of the transitions between the first wall portion 311 and the bottom portion 310 and between the second wall portion 312 and the bottom wall portion 310, and wherein a hole 315 is provided in the first wall portion 31 1 and a hole 316 is provided in the second wall portion 312 for receiving an axle 40 connected to the first end 12 of the lifting arm 14.
- the sledge 31 is provided with a second opening 318 and an incision 319 to make room for other parts of the lifting device 10.
- the sledge 31 has been made longer relative to the sledge of the first and second embodiments. This provides the sledge 31 with a larger strength. As a consequence, the incision 319 is made longer.
- the receiving means of the second coupling member include at least one receiving recess 314 in the sledge 31 of the sledge system 30.
- the second coupling member could also take other shapes.
- One conceivable, alternative solution would be to utilise the axle 40 as receiving means. This alternative solution is shown in Fig. 17.
- the sledge system 30 comprises a runner 32 in the embodiments described and shown in particular in Figs. 10-11 , 14a-14b, and 20a-20b, configured to accommodate the sledge 31 and being provided with at least one recess 324 opposite the respective receiving recess 314 of the sledge 31 of the second coupling member. Further details of the runner 32 are shown for information purposes only; such details are the subject of Applicant’s co-pending patent application filed on the same day as the present application. It is noted that the present invention is applicable also to sledge systems in which there is no runner, or a runner of a different configuration.
- the runner 32 is formed of a plastic material such as POM which may also be provided with a coating of for instance Teflon® or other treatment having the function to act as a lubricant to reduce the friction.
- the narrowing 313 on the runner 32 is made for reasons of space availability.
- By forming the runner slenderer in one side it is possible to make 322a thicker, and tolerances are accommodated in the side where 322 is - in that way the axle 40 is guided such that the end 402 does not protrude to wear on the side of the guidance.
- An edge portion 328 is provided as a cut-out in order to allow space for other parts of the assembly.
- a flange portion 329 scrapes the guidance to force for instance smudge gathered in the sledge guidance to the sides of the guidance.
- Figs 5 and 6 show the general components of the spring assembly 20 of a roof window, and further reference is in particular made to Figs 21 to 24.
- the general components of the spring assembly are: a tension rod 22 accommodating a buffer spring system 28 and a main spring system 29.
- the buffer spring system 28 acts as an auxiliary system to the main spring system 29.
- an adjustment means is provided in the form of a movable adjustment plate 26 which is placed in one of several recesses 27a in a spring casing 27 accommodating the buffer spring system 28.
- the buffer spring system 28 comprises an outer spring 281 and an inner spring 282 of substantially identical pre-defined lengths.
- the pre-defined length of the springs 281 , 282 is typically chosen according to the dimensions of other parts of the lifting device.
- the inner spring 282 is accommodated inside the outer spring 281 so as the axes of the respective springs extend substantially co-axially.
- the outer spring 281 and the inner spring 282 of the buffer spring system 28 have mutually different spring constants, and the outer spring 281 and the inner spring 282 of the buffer spring system 28 have mutually opposite thread directions.
- the spring assembly 20 here further comprises at least one spring plug 283, 284 configured to be in contact with the respective end of the inner spring 282 of the buffer spring system 28 in the mounted condition. That is, here the two spring plugs 283 and 284 form the respective ends of the buffer spring system 283 and 284.
- the spring plugs 283, 284 is provided with friction-increasing means at the surface configured to be in contact with the respective end of the inner spring 282 of the buffer spring system 28. In this way, the two springs are kept together in a safe manner.
- the coupling mechanism may be designed in any suitable manner and operated accordingly, as long as the fundamentals as outlined initially are fulfilled.
- the hook element 21 of the first coupling member is in the presently preferred embodiments arranged to slidably contact the sledge system 30 in one direction and to engage said second coupling member 31 in another direction, namely by being forced in the opposite direction to ensure engagement with the first and second coupling members by the components of the lifting device itself.
- Not all elements are indicated by reference numerals in Figs 12a to 12h for ease of readability and it is referred to the above description of the remaining Figures for detailed explanations.
- Fig. 12a the roof window is shown in its closed condition, that is the secondary frame or frames are lying substantially in parallel with the primary frame.
- the intermediate frame 3 represents the secondary frames
- the position of the sledge guidance 16 and the spring assembly 20 indicate the corresponding position of the stationary frame 1 although not shown, i.e. here substantially horizontal for reasons of clarity, even though the stationary frame 1 will most often be installed in an inclined roof surface prior to coupling the spring assembly 20 to the sledge system 30.
- the coupling mechanism is not yet active, and the sledge system 30 is consequently located at a distance from the spring assembly 20. From the break-out enlarged view of Fig. 12a is apparent the position of the coupling plate 25 in its first position, i.e. bottom position, and corresponds to the engagement position of the hook element 21 in which coupling is possible.
- the lifting arm 14 rotates as well, and the sledge system 30 moves in the direction of the spring assembly 20 and its associated first coupling member in the form of hook element 21.
- the hook element 21 slides up on the sledge 31 and is able to rotate slightly on the tension rod 22, as the base plate portion 212 of the hook element 21 is able to move relative to the inclined portion 223 on the back side of the head portion 222.
- the coupling plate 25 is still in its first, or bottom position.
- the hook portions 214 of the hook element 21 will reach a position just above the receiving recesses 314.
- the spring assembly 20 is biased and exerts a pull in the tension rod 21 , to the left in Fig. 12b, the hook element 21 will be subjected to a clockwise moment which in turn forces the hook portions 214 to enter the receiving recesses 314 of the sledge 31.
- the hook element 21 withdraws further to the left due to the bias of the spring assembly, the hook portions 214 are drawn into stable engagement with the receiving recesses 314 in the sledge 31 as shown in Fig. 12c.
- the window is now ready for normal operation, and during the subsequent closing of the intermediate frame 3, the movement of the lifting arm 14 pulls the sledge system 30 towards the top of the window, i.e. to the right as shown in Fig. 12d.
- the closing movement takes place during simultaneous further bias of the spring assembly 20 as is known perse.
- the roof window is prepared for uncoupling by first rotating the intermediate frame 3 to an open position. Then, the coupling plate 25 is brought from its first or bottom position to its second or top position by an upwards movement, indicated by arrow A in Fig. 12f.
- the window is not entirely open in the position of Fig. 12f, that is, the sledge system 30 is not in its left-most position but distanced from the spring assembly 20 by some millimetres.
- the sash is rotated to its fully open position and then moved slightly back in the closing direction such that the coupling plate 25 is free to be moved upwards. In this position the coupling plate is held in its upper most position by means of friction.
- the hook element 21 is still engaged with the sledge system 30 as the hook portions 214 are gripping the recesses 314 of the sledge 31 until the user grabs the sash and lifts it. During this movement, the hook element 21 is allowed to turn upwards in the counter-clockwise direction. This brings the hook element 21 to its non- engagement position in which coupling is not possible. This action is brought about in that the bottom flange 253 of the coupling plate 25 abuts on the back side of the base plate portion 212 of the hook element 21. The hook element 21 is thus affected by a counter-clockwise moment which keeps it in the non- engagement position.
- the secondary frame(s) may now be dismantled from the primary frame, here thus the intermediate frame 3 with sash 2 and pane 4 lifted off the connection with the stationary frame 1.
- the lifting of the coupling plate 25 may in principle take place in any suitable manner. Flowever, in order to ensure that unwarranted release does not take place, use of a suitable tool is preferably prescribed.
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL18812048T PL3714116T3 (en) | 2017-11-24 | 2018-11-26 | Roof window with improved spring assembly |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DKPA201770887A DK180218B1 (en) | 2017-11-24 | 2017-11-24 | Roof window with improved spring assembly |
PCT/DK2018/050310 WO2019101279A1 (en) | 2017-11-24 | 2018-11-26 | Roof window with improved spring assembly |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3714116A1 true EP3714116A1 (en) | 2020-09-30 |
EP3714116B1 EP3714116B1 (en) | 2021-09-08 |
Family
ID=64572052
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP18812048.9A Active EP3714116B1 (en) | 2017-11-24 | 2018-11-26 | Roof window with improved spring assembly |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP3714116B1 (en) |
CN (1) | CN111373106B (en) |
DK (1) | DK180218B1 (en) |
ES (1) | ES2895371T3 (en) |
HU (1) | HUE056557T2 (en) |
PL (1) | PL3714116T3 (en) |
WO (1) | WO2019101279A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP4006254A1 (en) | 2020-11-27 | 2022-06-01 | VKR Holding A/S | Roof window comprising sash with outer weather shield |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2514841A1 (en) * | 1974-08-05 | 1976-10-21 | Josef Gail | Up and over garage door - has pivot lever system upper slide track and spring weight balancing and energy storage |
DE7526097U (en) * | 1975-08-18 | 1975-12-18 | Hoermann Kg | SWING GARAGE DOOR WITH DOUBLE SPRING |
DK157695C (en) * | 1988-04-08 | 1990-06-25 | Rasmussen Kann Ind As | WINDOW, NAME FOR BUILT IN A SLOVED ROOF |
DK170718B1 (en) * | 1993-12-10 | 1995-12-18 | Rasmussen Kann Ind As | Window, especially for installation in a sloping roof surface |
UA53638C2 (en) * | 1996-03-29 | 2003-02-17 | Хьорманн Кг Брокхаген | sectional overhead door |
CN103993802B (en) * | 2009-03-12 | 2016-11-02 | Vkr控股公司 | Lifting device |
DE102013211407A1 (en) * | 2012-07-10 | 2014-01-16 | Schaeffler Technologies AG & Co. KG | Torsional vibration damper with bow spring and end cap |
-
2017
- 2017-11-24 DK DKPA201770887A patent/DK180218B1/en active IP Right Grant
-
2018
- 2018-11-26 EP EP18812048.9A patent/EP3714116B1/en active Active
- 2018-11-26 ES ES18812048T patent/ES2895371T3/en active Active
- 2018-11-26 HU HUE18812048A patent/HUE056557T2/en unknown
- 2018-11-26 WO PCT/DK2018/050310 patent/WO2019101279A1/en active Search and Examination
- 2018-11-26 PL PL18812048T patent/PL3714116T3/en unknown
- 2018-11-26 CN CN201880075491.2A patent/CN111373106B/en active Active
Also Published As
Publication number | Publication date |
---|---|
DK201770887A1 (en) | 2019-06-12 |
EP3714116B1 (en) | 2021-09-08 |
DK180218B1 (en) | 2020-08-20 |
PL3714116T3 (en) | 2022-01-31 |
CN111373106B (en) | 2021-07-06 |
DK201770887A9 (en) | 2020-08-31 |
ES2895371T3 (en) | 2022-02-21 |
CN111373106A (en) | 2020-07-03 |
HUE056557T2 (en) | 2022-02-28 |
WO2019101279A1 (en) | 2019-05-31 |
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