EP1989385B1 - Thermally resistive window sash member and window assembly - Google Patents

Thermally resistive window sash member and window assembly Download PDF

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Publication number
EP1989385B1
EP1989385B1 EP06706039.2A EP06706039A EP1989385B1 EP 1989385 B1 EP1989385 B1 EP 1989385B1 EP 06706039 A EP06706039 A EP 06706039A EP 1989385 B1 EP1989385 B1 EP 1989385B1
Authority
EP
European Patent Office
Prior art keywords
window
thermally resistive
window pane
profile member
flange
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.)
Expired - Lifetime
Application number
EP06706039.2A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1989385A1 (en
Inventor
Eirik BJØRN
Niels Peter Christensen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
VKR Holding AS
Original Assignee
VKR Holding AS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by VKR Holding AS filed Critical VKR Holding AS
Priority to EP13180878.4A priority Critical patent/EP2674561B1/en
Priority to PL06706039T priority patent/PL1989385T3/pl
Priority to DK13180878.4T priority patent/DK2674561T3/en
Publication of EP1989385A1 publication Critical patent/EP1989385A1/en
Application granted granted Critical
Publication of EP1989385B1 publication Critical patent/EP1989385B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/04—Wing frames not characterised by the manner of movement
    • E06B3/263—Frames with special provision for insulation
    • E06B3/26301—Frames with special provision for insulation with prefabricated insulating strips between two metal section members
    • E06B3/26305—Connection details
    • 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
    • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/30—Coverings, e.g. protecting against weather, for decorative purposes
    • E06B3/308—Wing frames covered on the outside by a rigidly-mounted outer frame
    • 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
    • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/32—Arrangements of wings characterised by the manner of movement; Arrangements of movable wings in openings; Features of wings or frames relating solely to the manner of movement of the wing
    • E06B3/325—Wings opening towards the outside
    • 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
    • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/04—Wing frames not characterised by the manner of movement
    • E06B3/263—Frames with special provision for insulation
    • E06B2003/26349—Details of insulating strips
    • E06B2003/2635—Specific form characteristics
    • E06B2003/26352—Specific form characteristics hollow

Definitions

  • the current invention relates to a profile member of a window sash for an outwardly opening window assembly.
  • the profile member comprises an outer element which comprises a surface which is in contact with a portion of the outer surface of a window pane when assembled, a flange which extends at least partially underneath the window pane when assembled and means for attaching mounting hardware to said outer element, a thermally resistive element which is connected to said flange at a location between the plane of the inside surface of the window pane and the plane of the outside surface of the window pane and which extends past the plane of the inside surface of the window pane when assembled, and an inner element which is connected to said thermally resistive element and which comprises a surface which is in contact with a portion of the inside surface of the window pane when assembled. Due to the thermally resistive element arranged between the inner element and the outer element, the thermal properties of the entire window are significantly improved.
  • a similar type of profile element is known for inwardly opening windows. See for example DE 94 12 123 U1 , FR 2 802 969 A1 , and DE 298 09 322 U1 .
  • outwardly opening window assemblies have some important differences from inwardly opening windows which have made it impossible to use the thermally resistive profile members known from inwardly opening windows for outwardly opening window assemblies.
  • EP 0 548 531 A1 discloses a relevant top-hung window sash.
  • outwardly opening windows have the mounting hardware mounted on the outside of the window and the locking hardware mounted on the inside of the window.
  • hinges are mounted on the outer side of a profile member on one side of a window pane and an espagnolette is mounted on the inner side of a profile member on another side of the window pane. Therefore both the inner and the outer side of the profile members have to be strong.
  • Inwardly opening window assemblies usually have both the mounting hardware and the locking hardware connected to the inner side of the profile member. It is therefore possible to use the thermally resistive profile members as disclosed above. These profiles are characterized in that they have a strong inner side made from aluminium and a weak outer side made from a thermally resistive material, for example plastic. Therefore, these profiles will not work for outwardly opening window assemblies since the thermally resistive element is not strong enough to support the loads placed on the inner element of an outwardly opening window assembly.
  • a first aspect of the current invention is therefore to provide a profile member as mentioned in the opening paragraph which has better thermal properties than the currently available profile members while still being strong enough to support the loads present in an outwardly opening window assembly.
  • said thermally resistive element comprises at least one attachment element which is connectable with a corresponding attachment element on the flange of said outer element and in that said outer element comprises a supporting element which extends underneath a portion of the thermally resistive element which is below the lowermost of said at least one attachment elements of the thermally resistive element and which is in contact with said portion in order to support the thermally resistive element against loads in a downward direction. Due to this construction a strong and effective connection is formed between the thermally resistive element and the outer element. Further, a surface of said support element lies up against a surface of said thermally resistive element, but not be positively connected to it. In this way a support element is arranged which does not make the assembly of the two components more complicated.
  • said supporting element can be an essentially horizontal flange protruding from the end of the flange which extends at least partially underneath the window pane.
  • the support element could be in contact with the surface of the thermally resistive element which is furthest from the centre of the window.
  • the angle between the angled side and the window pane could be such that the side of the essentially horizontal hollow box section farthest from the centre of the window pane extends more towards the inside of the window than the side of the essentially horizontal hollow box section closest to the centre of the window pane.
  • mounting hardware is defined as the hardware which is used to hold the window sash connected to the window frame.
  • hinges are considered to be mounting hardware.
  • Locking hardware is defined as the hardware which keeps the window closed.
  • an espagnolette is considered to be locking hardware.
  • outwardly opening window assembly when used in the current specification is to be understood as a window assembly where the "sash" is located outside the “frame”. This means that even if the sash is permanently fixed to the frame, as long as the sash is outside of the frame, the window is considered to be an outwardly opening window assembly.
  • thermoally resistive in this specification is to be understood as being an object having a coefficient of thermal conduction which is lower than that of aluminium.
  • Figure 1 shows a typical prior art profile member 1 of a window sash of an outwardly opening window assembly.
  • the profile member 1 is shown attached to one edge 2 of a double glazed window pane 3.
  • the window pane 3 has an outer surface 4 and an inner surface 5.
  • the profile member 1 comprises an outer element 6 which is in contact with the outer surface 4 of the window pane and an inner element 7 which is in contact with the inside surface 5 of the window pane.
  • the actual contact between the window pane and the sash elements is via seals 8,9 attached to the outer and inner elements 6,7 respectively.
  • the outer element 6 is considered to have a surface 8 which is in contact with the outer surface 4 of the window pane and the inner element 7 is considered to have a surface 9 which is in contact with the inner surface 5 of the window pane.
  • the seals 8,9 are considered to be parts of respectively the outer and inner elements.
  • the outer element 6 also comprises a flange 10 which extends underneath the edge 2 of the window pane 3 and extends from the outer surface of the window pane towards the inside of the window and past the plane 11 of the inside surface 5 of the window pane 3.
  • the flange 10 is a horizontal flange, at least a part of which has a cross section in the shape of a hollow box. The hollow box gives extra strength to the profile element.
  • a channel 12 is arranged whereby mounting means (not shown), such as hinges, tracks, and so on, can be attached.
  • the channel 12, for the sake of the current specification, is considered to be a form of attachment means.
  • the inner element 7 is connected to the portion 14 of the flange 10 which is located on the inner side of the plane 11 of the inside surface 5 of the window pane 3.
  • the inner element 7 is connected to the flange via a channel 13 located on the upper side of the flange.
  • the inner etement 7 is made from via thermally resistive material, for example PVC, and the outer element 6 is made from aluminium for the sake of its strength properties.
  • locking hardware such as an espagnolette
  • the locking hardware is attached to the portion 14 of the flange 10 which is located on the inner side of the plane 11.
  • the locking hardware can in some cases be partially hidden from view within the inner element 7. Therefore, in the prior art solution shown in figure 1 , it is necessary that the flange 10 of the outer element 6 is quite strong. This is because both mounting hardware and locking hardware are attachable to the flange 10.
  • the inner element 7 in order to insulate the warm inside of the window assembly from the cold outer side of the window pane, it is necessary for the inner element 7 to be thermally resistive. Since the strong outer element 6 is made from aluminium, it is very thermally conductive, which means that the innermost point 15 of the outer element 6 is roughly the same temperature as the outside surface 4 of the window pane 3. The plastic inner element 7 therefore, separates the warm inner surface 5 of the window pane 3 from the cold outer element 6. However, in the prior art, the distance "d" between the inside 16 of the window assembly and the innermost point 15 of the outer element 6 is rather small. The thermal insulating properties of the window are directly affected by the size of this gap.
  • the frame member 17 is typically made from wood which is very thermally resistive.
  • Figure 2 shows a profile member 20 which has better thermal properties than the prior art profile member 1 shown in figure 1 .
  • the profile member 20 is again shown mounted at the edge 2 of a window pane 3.
  • the window pane 3 has an outer surface 4 and an inner surface 5.
  • a section of a wooden window frame 17 is also shown.
  • the profile member 20 comprises an outer element 21, an inner element 22, and a thermally resistive element 23.
  • the outer element 21 is in contact with the outer surface 4 of the window pane 3 via a seal 8 and the inner element 22 is in contact with the inner surface 5 of the window pane 3 via a seal 9.
  • the outer element 21 is made of aluminium for the sake of its strength while the inner element 22 and the thermally resistive element 23 are made from a thermally resistive material.
  • the inner element 22 could be made from PVC and the thermally resistive element 23 could be made from glass fibre re-enforced PA.
  • many other types of materials could also be used. The materials can be chosen as a compromise between their strength properties and their thermal properties in order that the final window assembly has the strength and thermal properties required for the specific application.
  • the outer element 21 comprises a horizontal flange 24 which extends under the edge 2 of the window pane 3.
  • the thermally resistive element 23 connects to the flange 24 at a location which is between the plane 25 of the outside surface 4 of the window pane 3 and the plane 26 of the inside surface 5 of the window pane 3. It can be seen that the thermally resistive element 23 can be considered as a form of "extension" of the flange 24 of the outer element 21.
  • the distance "d" between the innermost point 27 of the thermally conductive outer element and the outermost point 28 of the inside surface of the window assembly is much larger than in the prior art.
  • the thermal properties of a window assembly constructed from the profile elements as shown in figure 2 are much better than those of a window assembly constructed from the profile elements shown in figure 1 .
  • the horizontal flange 24 of the outer element 21 is formed with a hollow box shaped portion.
  • One side 29 of the hollow box shaped portion is arranged at an angle to the plane of the window pane.
  • An attachment element 30 in the form of the female part of a dovetail joint is arranged on this angled side 29.
  • the thermally resistive element 23 has a correspondingly angled side 31 and a corresponding attachment element 32 formed as the male part of a dovetail joint. Due to the angled surface, the area of contact between the thermally resistive element 23 and the flange 24 of the outer element 21 is increased. Due to this increased area of contact, the strength of the connection is increased. Furthermore, due to the increased length of the angled side 29, a wider dovetail joint can be used. This also increases the strength of the connection since the points of engagement of the dovetail joint are spaced further apart thereby increasing the moment which can be supported by the dovetail joint.
  • the outer element 21 comprises a support element 36.
  • the support element 36 is a horizontal flange which extends a short distance undemeath the thermally resistive element 23.
  • positive connection is defined as a connection which works in both push and pull directions.
  • the support element 36 supports the thermally resistive element via the contact between a surface of the support element and a surface of the thermally resistive element. Therefore, vertical downwardly directed loads on the thermally resistive element 23 will be supported by the support element 36.
  • the absence of a positive connection between the two elements 23,36 makes it easy to assemble the two elements 23,36.
  • connection plane 33 could be drawn between the thermally resistive element 23 and the outer element 21. Note, the actual connection does not occur along a single plane, as is obvious from the figure. However, an imaginary "connection plane” 33 can be imagined as shown in figure 2 . It can be seen that this "connection plane” 33 is angled with respect to the window pane such that the side 34 of the thermally resistive element which is closest to the centre of the window pane 3 extends closer to the outside of the window than the side 35 of the thermally resistive element which is farthest from the centre of the window. In this way, the shortest distance between the warm inside and the cold outer element 21 is increased in comparison to a thermally resistive element having a vertical plane of connection. If the plane of connection were angled the opposite way, then the distance between the warm inside and the cold outer element 21 would be reduced.
  • connection there is a single positive point of connection between the thermally resistive element 23 and the outer element 21.
  • positive point of connection is meant a point of connection which prevents relative motion between the two connected elements in both pull and push directions. This is in contrast to a simple support type of connection, as is the case between the flange 36 and the thermally resistive element 23.
  • the outer element 21 also comprises a channel 37 for attaching mounting means (not shown).
  • the channel 37 is arranged on the bottom surface of the box shaped hollow portion of the flange 24.
  • one of the sides 38 of the channel 37 is arranged to be a continuation of the angled side 29 of the hollow flange 24 of the outer element 21. In this way, the strength of the outer element 21 is further optimized.
  • the inner element and the thermally resistive element are two distinct elements which are assembled during assembly of the window sash, however, in another embodiment, it could be imagined that the two elements were integrated into a single element.
  • Figure 3 shows a second embodiment 40 of a profile member of a window sash of an outwardly opening window assembly.
  • the second embodiment 40 is almost identical to the first embodiment 20, only the connection between the thermally resistive element 41 and the flange 42 of the outer element 43 is different, therefore, only this feature of this embodiment will be described.
  • the upper surface 44 of the flange 42 of the outer element 41 is formed with an attachment element 45 in the form of the female part of a dovetail connection.
  • the thermally resistive element 41 has a corresponding attachment element 46 in the form of the male part of a dovetail connection.
  • the attachment element 46 extends a certain distance under-neath the edge 2 of the window pane 3 towards the outside of the window in order to engage with the attachment element 45 in the upper surface of the flange 42.
  • the connection plane 47 is further angled when compared with the first embodiment 20. This increases the strength properties of the profile.
  • the thermal properties of the profile are also improved slightly with respect to the embodiment shown in figure 2 since the distance between the cold outer element and the warm inside is increased slightly.
  • the outer element 43 also comprises a support element 48 to support the thermally resistive element 41 even further.
  • Figure 4 shows a third embodiment 60 of a profile member.
  • the profile member 60 is almost identical to the first embodiment 20. The only difference is with the support element 61. Therefore only this feature will be described here.
  • the support element 61 is formed as an upwardly facing hook which extends underneath the thermally resistive element 62 and supports the thermally resistive element 62 at a point 63 instead of over a large surface as in the previous two embodiments.
  • the purpose of this embodiment is to show that the support element can be formed in different ways and should not be limited to an essentially horizontal flange as in the first embodiment.
  • Figure 5 shows a fourth embodiment 70 of a profile member.
  • the profile member 70 is almost identical to the first embodiment 20. Therefore only the differences between this embodiment and the first embodiment 20 will be described.
  • the side 71 of the flange 72 of the outer element 73 is vertical instead of angled.
  • the "height" of the essentially horizontal box shaped section of the flange 72 is larger than with the previous embodiments. That is to say that the distance between the two horizontal sides 76, 77 is larger than with the previous embodiments.
  • This means that the innermost side of the box shaped section is longer than with the previous embodiments, thereby allowing the "width" of the dovetail joint to be increased. This results in a strong connection even though there is no angled surface.
  • This embodiment is well suited for outer elements 72 which have a "tall" flange 72. It should be noted that the strength of this embodiment is as good as the previous embodiments, however the thermal properties are not quite as good because the shortest distance between the cold outer element and the warm inside is reduced.
  • FIG. 6 shows a schematic view of an embodiment of an outwardly opening window assembly 100 placed in an opening 101 in a wall 102.
  • the window assembly 100 comprises a window frame 103, a window pane 104 and a window sash 105 arranged around the outside edge of the window pane 104.
  • the window sash 105 is made up of four profile elements 105a, 105b, 105c, 105d, one along each edge of the window pane 104.
  • Mounting hardware in the form of hinges 106 are connected to one of the profile elements 105d and locking hardware in the form of an espagnolette 107 is connected to another one of the profile elements 105b. This is a typical sort of outwardly opening window assembly.
  • mounting hardware such as hinges
  • locking hardware such as espagnolettes
  • one way of improving the thermal properties of the window assembly 100 while maintaining the required strength properties of the window assembly 100 is to assemble the window sash using thermally optimized profiles 105a, 105c, 105d on the sides of the sash having no locking hardware and using a "strong" profiles 105b on the side of the sash on which locking hardware is mounted.
  • the three thermally optimized profiles 105a, 105c, 105d are identical to one of the profiles shown in figures 2-5 .
  • the "strong" profile 105b of the current embodiment 100 is similar to the one shown in figure 1 .
  • This principle could be used with other combinations of profile elements.
  • locking hardware is mounted on two profile elements.
  • the window assembly could be constructed with two thermally optimized profiles and two prior art type profiles.
  • the combination of elements can be chosen in such a way that the resulting thermal and strength properties of the window assembly match the desired thermal and strength properties.

Landscapes

  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Securing Of Glass Panes Or The Like (AREA)
  • Window Of Vehicle (AREA)
EP06706039.2A 2006-02-08 2006-02-08 Thermally resistive window sash member and window assembly Expired - Lifetime EP1989385B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP13180878.4A EP2674561B1 (en) 2006-02-08 2006-02-08 Thermally resistive window sash member and window assembly
PL06706039T PL1989385T3 (pl) 2006-02-08 2006-02-08 Odporny termicznie człon skrzydła okiennego i zespół okna
DK13180878.4T DK2674561T3 (en) 2006-02-08 2006-02-08 Heat resistant window frame element and window device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/DK2006/000068 WO2007090394A1 (en) 2006-02-08 2006-02-08 Thermally resistive window sash member and window assembly

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP13180878.4A Division EP2674561B1 (en) 2006-02-08 2006-02-08 Thermally resistive window sash member and window assembly

Publications (2)

Publication Number Publication Date
EP1989385A1 EP1989385A1 (en) 2008-11-12
EP1989385B1 true EP1989385B1 (en) 2013-08-21

Family

ID=36999916

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06706039.2A Expired - Lifetime EP1989385B1 (en) 2006-02-08 2006-02-08 Thermally resistive window sash member and window assembly

Country Status (4)

Country Link
EP (1) EP1989385B1 (pl)
DK (1) DK1989385T3 (pl)
PL (1) PL1989385T3 (pl)
WO (1) WO2007090394A1 (pl)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2281098A2 (en) 2008-03-26 2011-02-09 VKR Holding A/S Window assembly
EP2105569A1 (en) 2008-03-26 2009-09-30 VKR Holding A/S Window assembly
GB2464559A (en) * 2008-10-25 2010-04-28 Bowater Building Products Ltd Two part window frame
EP2211009B1 (en) 2009-01-23 2017-10-04 VKR Holding A/S Outwardly opening window assembly
DE202009010243U1 (de) * 2009-07-28 2009-10-01 Vipo Vinduer A/S Nach außen öffnendes Fenster
CN101915045B (zh) * 2010-08-06 2012-07-18 浙江瑞明节能门窗股份有限公司 一种铝合金地弹簧门系统

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3686795A (en) * 1967-02-28 1972-08-29 Aluminum Co Of America Windows and similar panel-supporting structures
FR2552798B1 (fr) * 1983-09-29 1985-12-27 Metalliques Entrepr Cie Fse Structure de mur-rideau a cadres metalliques, a ruptures phonique et thermique
US4982530A (en) * 1988-10-14 1991-01-08 Sne Enterprises, Inc. Extruded core sections for wood fenestration mounting frames and sashes
US5038537A (en) * 1989-02-21 1991-08-13 Harry Frambach Window system and structure
DE4141994A1 (de) * 1991-12-19 1993-06-24 Gerd Philippi Klappfluegel eines glasdaches oder einer glaswand
US5836119A (en) * 1997-01-23 1998-11-17 Lincoln Wood Products, Inc. Window sash
DE10059849A1 (de) * 1999-11-30 2001-05-31 Raico Bautechnik Gmbh Vorrichtung an Isolierglasscheiben
WO2002084062A1 (en) * 2001-04-10 2002-10-24 Vkr Holding A/S Fire retarding window

Also Published As

Publication number Publication date
EP1989385A1 (en) 2008-11-12
WO2007090394A1 (en) 2007-08-16
PL1989385T3 (pl) 2014-01-31
DK1989385T3 (da) 2013-12-09

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