GB2576348A

GB2576348A - Improvements in or relating to sash members

Info

Publication number: GB2576348A
Application number: GB1813362.9A
Authority: GB
Inventors: Redshaw Adrian; Armes Christopher
Original assignee: HL Plastics Ltd
Current assignee: Liniar Ltd
Priority date: 2018-08-16
Filing date: 2018-08-16
Publication date: 2020-02-19
Also published as: GB201813362D0

Abstract

The member 12 comprises an elongate plastic sash body 14 having a unitary cross-sectional profile 16 including a first retention portion 18 to selectively retain an interior bead member 20, the interior bead member defining a first abutment formation 22 against which, in use, an interior glazing face 26 of a corresponding glazing panel 28 abuts, the panel is located in a desired depth wise position relative to the unitary cross section profile. The profile also includes a second retention portion 32 to selectively retain an exterior bead member 34 having a glazing panel retention portion 36 that defines a second abutment formation 38. An exterior glazing face 42 of the glazing panel abuts against the second formation when in use. The second retention portion also includes first 44A and second 46A coupling formations to cooperate, in use, with corresponding first 44B and second 46B coupling formations of the exterior bead member to selectively retain the said exterior bead member. One of the coupling formations of the second retention portion being resiliently deformable to selectively permit separation of the exterior bead member from the unitary cross-sectional profile.

Description

IMPROVEMENTS IN OR RELATING TO

SASH MEMBERS

This invention relates to a sash member for a door or a window and a sash member 6 assembly.

According to a first aspect of the invention there is provided a sash member, for a door or a window, comprising an elongate plastics: sash body having a unitary cross-sectional profile including a first retention portion to receive and selectively retain an interior bead io member, the interior bead member defining a first abutment formation against which inuse an interior glazing face of a corresponding glazing panel abuts to locate th® glazing panel in a desired depth-wise position relative to the unitary cross-sectional profile, the unitary cross -sectional prof ile also including a second retention portion to selectively retain art exterior bead member having a glazing panel retention portion that defines a second 16 abutment formation against which an exterior glazing face of the corresponding glazing panel in use abuts, the second retention portion Including first and second coupling formations to cooperate, in use, with corresponding first and second coupling formations of the exterior bead member to selectively retain the said exterior bead member, one of the coupling formations of the second retention portion being resiHentiy deformable to 20 selectively permit separation of the exterior bead member from the unitary cross-secfiohai profile.

The inclusion of a resilientiy deformable coupling formation within the second retention portion, which selectively permits the separation of the exterior bead: member from the 26 unitary cross-sectional profile, is beneficial because it allows for the removal of the exterior bead member, e.g. for replacement and/or repositioning, without the need to provide a deformable exterior bead member which would otherwise compromise the security of any associated sash member assembly by facilitating unauthorised removal of the exterior bead member and the subsequent removal of a corresponding glazing panel. In addition, 30 providing a resilientiy deformable coupling formation within the second retention portion minimises the risk of damaging the exterior bead member, e.g. by forcing an otherwise relatively rigid exterior bead member out of shape.

Preferably the resilientiy deformable coupling formation is in use selectively accessible 35 from an exterior perimeter of the: unitary cross-sectional profile while the exterior bead member continues to be: retained by the second retention portion.

Having a resiliently deformable coupling formation that is selectively accessible from an exterior perimeter of the unitary cross-section profile, while the exterior bead member continues to be retained by the second retention portion, is advantageous because it allows, e.g. an installer or other technician, to deform the resiiientiy deformable coupling 5 when needed to allow removal of the exterior bead member.

Optionally the first coupling formation of the second retention portion defines one of a rebate formation and a barb formation which in use cooperates with the first coupling formation of an exterior bead member in the form of a corresponding other of a barb 10 formation and a rebate formation to selectively retain the said first coupling formations in coupling engagement, with one another.

The first coupling formation of the secund retention portion may be the resiiientiy deformable coupling formation.

The foregoing features provide for the required retention of the exterior bead member relative to the unitary cross-sectional profile in a manner in which deformation of ana of the first coupling formations, e.g. by an installer, is readily able to allow subsequent separation of the exterior bead member from the unitary cross-sectional orofile.

in a preferred embodiment of the invention the second coupling formation of the second retention portion defines a pivot about which the exterior bead member is in use rotatable to move the respective first coupling formations of the second retention portion and trie exterior bead member into coupling engagement with one another.

Such an arrangement assists in correctly positioning an exterior bead member relative to the sash member of the Invention, e.g. during assembly of a door or window incorporating the said sash member, while also helping to retain the exterior bead member relative to the sash member.

Preferably the second retention portion defines an abutment face against which an abutment portion of the exterior bead member In use abuts, the abutment face being configured so that it and the exterior glazing face of the corresponding glazing panel are coplanar with one another when the said glazing panel is located in its desired depth-wise 35 position, whereby in use a depth-wise spacing of an exterior bead face of the exterior bead member from the exterior glazing face of the glazing panel is defined by a depth-wise thickness of the abutment portion of the exterior bead member.

Having a sash member in which, in use, the depth-wise spacing of an exterior bead face of an exterior bead member from the exterior glazing face of the glazing panel is defined by the depth-wise 'thickness of an abutment portion of the exterior bead member means 5 that the provision of a relatively thin abutment portion, which itself saves an material costs for the exterior bead member, additionally allows the said depth-wise spacing between the exterior bead face and the exterior glazing face to be commensurately narrow. This, in turn, provides for a corresponding sash member assembly in which an exterior bead member appears to be essentially flush-mounted relative to the corresponding glazing panel which in is particularly desirable in same architectural and/or building installations.

According to a second aspect of the invention there is provided a sash assembly for a door o· a window comprising a sash member including an elongate plastics sash body having a unitary aross-sectional profile, the unitary cross-sectional profile including a first retention 15 portion which retains an interior bead member, the interior bead member defining a first abutment formation against which an interior glazing face of a corresponding glazing panel abuts to locate the glazing panel in a desired depth-wise position relative to the unitary cross-sectibnal profile, the unitary cross -sectional profile also including a second retention portion which retains an exterior bead member having a glazing panel retention portion 20 that defines a second abutment formation against which an exterior glazing face of the corresponding glazing panel abuts, the second retention portion including first and second coupling formations which cooperate with corresponding first and second: coupling formations of the exterior bead member to retain the said exterior bead member, one of the coupling formations of the second retention portion being resiHentiy deformable to 25 selectively permit separation of the exterior bead member from the unitary cross-sectional profile.

The sash assembly of the invention; shares the advantages of the corresponding features of the sash member of the invention, as mentioned hereinabove.

Optionally following: removal of the glazing panel the reslliently deformable coupling formation is accessibie from an exterior perimeter of the unitary cross-sectional profile while the exterior bead member continues to be retained by the second retention portion.

Such an arrangement ire, where removal of a glazing panel: is needed before the resilfentiy deformabie couple formation can be aocesssd, desirably helps to prevent unauthorised removal of the exterior bead member, while nevertheless allowing for its removal when desired and/or appropriate, i.e, following removal of fee interior bead member.

The sash assembly may additionally comprise a glazing packer lying between the glazing § panel and the sash member.

Preferably following removal of the glazing panel and the glazing packer, the rasiliently deformable coupl ing formation is accessible from an exterior perimeter of the unitary crosssectional profile while the exterior bead member continues to be retained by the second retention portion.

Such features provide the aforementioned benefit of allowing for removal of the exterior bead member when desired and/or appropriate in arrangements having a glazing packer which forces the first coupling formations into engagement with one another, and thereby is assists further in preventing unauthorised removal of the exterior bead member.

Optionally one first coupling formation defines a rebate formation and the other first coupling formation defines a barb formation, the rebate and barb formations cooperating with one another to selectively retain the said first coupling formations in coupling 2C engagement with one another.

In another preferred embodiment of the invention one first coupling formation is the reslltentiy deformable coupling formation.

In a still further preferred embodiment of ths invention the- rebate formation is the resiliently deformable coupling formation.

Such features share the benefits of the corresponding features of the sash member of the invention, i.e, they provide for the required retention of the exterior bead member relative 3:o to the unitary cross-sectional profile in a manner in which deformation of one of the first coupling formations, e.g. by an installer, is readily able to allow subsequent separation of the exterior bead member from the unitary cross-sectional profile.

One second coupling formation may include a: recess and the other second coupling formation may include a protrusion, the recess and protrusion together defining a pivot about which the exterior bead member Is rotatable to move the respective first coupling:

formations of the second retention portion and the exterior bead member into coupling engagement with one another.

Such an arrangement assist®: in ccrrectly positioning an exterior bead member relative to 5 the sash member of the invention, e.g. during assembly of a door or window incorporating the said sash member, while also helping to retain the exterior bead member relative to the sash member.

Optionally the glazing panel retention portion of the exterior bead member Inciudes a w chamfer which extends: ϊπ a. length-wise direction along the exterior bead member.

Preferably the sash assembly includes first and second adjacent exterior bead members arranged relative to one another In a ran through joint contiguration. an abutting end of one exterior bead member tying opposite the chamfer of the glazing panel retention portion is of the other exterior bead member having a chamfered undercut to compliment the said chamfer.

The foregoing features combine with one another to allow the chamfered undercut of the one exterior bead member to overlie the chamfer of the other exterior bead member, 20 whereby a degree of expansion and contraction of the exterior bead members, which may differ tc the expansionfoontractic-n experienced by the corresponding sash members, can be accommodated without exposing In an unsightly manner a portion of one or other corresponding sash member, e.g. via a gap which might otherwise arise between the adjacent exterior bead members.

In a still further preferred: embodiment of the invention the second retention portion defines: an abutment face against which an abutment portion of the exterior bead member abuts, the abutment face being configured sc· that it and the exterior glazing face ef the corresponding glazing panel are coplanar with on® another, whereby a depth-wise spacing 3S of an exterior bead face of the exterior bead member from the exterior glazing face of the glazing panel is defined by a depth-wise thickness of the abutment portion of the exterior bead: member.

Such features share with them the benefits of the corresponding features of the sash as member of the invention.

e

There now fallows a brief description of preferred embodiments of the invention, by wa y of non-limiting example, with reference being made to the following figures in which;

Figure i shows a cross-sectional view from a first end of a portion of sash assem bly 5 according: to an embodiment of the invention;

Figure 2(a) shows a cross-sectional view from a second end,, opposite the first end, of the sash assembly shown in Figure 1;

Figure 2(b) shows an eievatlonal view from in front of the sash assembly shown in Figure 1; and ία Figure 3 shows an enlarged: view of a portion of the sash assembly shown in Figure

1.

A sash assembly according to: an embodiment of the invention, which may be for a door or a window (not shown), is designated generally by reference numeral 10.

The sash assembly 10 includes a sash member 12 according to another aspect of the invention, and in particular a sash member 12 which includes an elongate plastics sash body 14 that has a unitary cross-sectional profile 16,

2C The unitary cross-sectional profile 16 includes a first retention portion 18 which selectively retains an interior bead member 20.

The interior bead member 20 defines a: first abutment formation 22, in the form of a first rubber gasket24 (although this need, not necessarily be the case), against which an interior 25 glaring face 26 of a corresponding glazing panel 28 abuts. This locates foe glazing panel

28, which in the embodiment: shown lies on an optional glazing packer 30, in a desired depth-wise Dw position: relative to the unitary cross-sectional profile '16.

The unitary cross-sectional profile 16 also includes a second retention portion :32 which 30 selective I y retains an exterior bead mem her 34.

The exterior bead member 34 is more rigid than the unitary cross-sectional profile 16 and preferably is formed, e.g. extruded, from a metal such as aluminium.

The exterior bead member 34 is substantially planar but has a glazing panel retention portion 36 that: defines: a second abutment formation 38, which in the embodiment shown

Includes a second rubber gasket 40, against: which an exterior glazing face 42 of the corresponding glazing panel 28 abuts, as shown in Figure 1.

The second retention portion 32 includes first and second coupling formations 44A_: 46A s which cooperate with corresponding first and second coupling formations 44B, 488 of the exterior bead member 34 ta selectively retain the exterior: bead member 34 relative to the unitary cross-sectional profile 16.

More particularly, the first coupling formatton 44A of the second retention portion 32 io defines: a rebate formation 48: and the first coupling formation 448 of the exterior bead member 34 defines a barb formation 50, although in other embodiments of the invention this arrangement may be reversed.

In a ny event, however, the rebate and barb formations 48, 50 cooperate: with one another, ta as shown in Figure 1, io selectively retain the first coupling formations 44A, 44B in coupling engagement with one another.

In addition to the foregoing, the rebate formation 48 is resiliently deformable: which, as described in more detail below, selectively permits separation of the exterior bead member 20 34 from the unitary orcss-sectional profile 16.

Meanwhile, the second coupling formation 46A of the second retention portion 32 includes a recess 52 and the second coupling formation 46B of the exterior bead member 34 includes a protrusion 54, In other embodiments of the invention (not shown) this 25 arrangement may be reversed but. in any case, the recess and protrusion 52, 54 together define a pivot 56 about which the exterior bead member 34 is rotatable.

As shown in Figure 1, the glazing panel retention portion 36 of the exterior bead member includes a chamfer 58 which, as shown in Figure 2(c), extends in a fength-wlse tw direction along the exterior bead member 34,

Moreover, since the sash assembly 10 shown includes first and second adjacent exterior bead members 34 arranged relative to one another in a run through joint configuration, Le. in an arrangement in which an: abutting end 80 of one exterior bead member. 34 lies 3§ opposite the chamfer 58 of the glazing panel retention portion 36 of the other exterior bead member 34, as shown in Figures 2(a) and 2(b).. the said abutting end 60 of the one exterior §

bead member 34 has a chamfered undercut 62: to: compliment the chamfer 58 of the ether exterior bead member 34.

In other embodiments of the invention, not shown, first and second adjacent exterior bead members may instead be arranged relative to one another in a mitre.joint configuration, in which: case the chamfered undercut may be omitted.

Returning to the embodiment shown, the second retention portion .32 additionally defines an abutment face 64 against which an abutment portion 66 of the exterior bead member ic> 34 abuts. More particularly, the abutment face 64 is configured so that it and the exterior glazing face 42 of the glazing panel 28 are coplanar with one another, as shown most clearly in Figure 1. As a-consequence, a depth-wise spacing 68 of an exterior bead face 70 of the exterior bead member 34 from the exterior glazing face 42 of the glazing panel 28 is defined by* a depth-wise thickness 72 of the abutment portion 66 of the exterior bead 15 member 34.

In the embodiment shown, the depth-wise thickness 72 of the abutment portion 66 is defined by first and second reinforcing ribs 74,76. which extend in a length-wise direction Lw along the exterior bead member 34, in other embodiments of the invention, not shown, 20 the depth-wise thickness of the abutment portion, and hence the depth-wise spacing of the exterior bead face from the exterior glazing face of the glazing panel, may be controlled: in a different manner.

In use, one way in which an installer may assemble the sash assembly 10 described 25 hereinabove is by first of ail securing, i.e. retaining, an exterior bead member 34 io a corresponding sash member 14. This is done by engaging the second coupling formations 46A,_: 46B. i.e, the recess and protrusion 52, 54, with one another to create the corresponding pivot 56, arid thereafter pivoting the exterior bead member 34 about the pivot 56 to move the: respective first coupling formations 44A, 446, i.e., the corresponding.

rebate and barb formations 48, 50, of the secund retention portion 32 and the exterior bead member 34 into coupling engagement with one another.

The glazing packer 30 and glazing panel 28 are then put Into place, before finally the interior bead member 18 is pushed into position to be retained by the first retention portion: 35 18 and thereby, in combination with the exterior bead member 34, retain the glazing panel

28. Advantageously, the latter step of pushing the interior bead member 18 into position can be done from the interior et a building in: which the sash assembly 10 is to be incorporated, thereby similarly allowing prior installation of the glazing panel 28 and glazing packers 30 from within ths· b-uhairg in the event that it is desired to remove one or mors exterior bead members 34 from an 5 associated sash member 12, it is simply a matter of deforming the rebate formation 48, e.g. using a tool such as a screwdriver tip 78 (as shown in Figure 3). to permit withdrawal of the corresponding barb formation 50 and thus separation of the extenor bead· member 34 from the associated unitary cross-sectional profile 16 of the sash member 12.

W: In this regard, as also shown In Figure 3:,. it should be noted that the resliienfly deformable coupling formation 44A, i.e. the resiliently deformable rebate formation 48, is accessible from an exterior perimeter of the unitary cross-sectional pre-file 16 while ths exterior bead member 34 continues to be retained by the second retention portion 32.

Moreover, in circumstanoes where a glazing panel 28. and possibly a glazing packer 30 have already been installed, the reslliently deformable rebate formation 48 becomes accessible In the same manner following removal of the glazing, panel 28 and, as necessary, the glazing packer 30, e.g. following removal (from within an interior of an associated building) of the interior bead member 20.

Claims

CLAIMS:

1 A sash member,: for a door or a window, com prising an elongate plastics sash body having a unitary cross-sectional profile including a first retention portion to selectively retain 5 an Interier bead member, the interior bead member defining a first abutment formation against Which in-use an interior glazing face of a corresponding glazing panel abuts to locate the glazing panel in a desired depth-wise position relative to the unitary crosssectional profile, the unitary cress-sectional profile also including a second retention portion to selectively retain an exterior bead member having a glazing panel retention io· portion that defines a; second abutment: formation against which an exterior glazing face of the corresponding glazing panel in use abuts, the second retention portion including first and second couplingformations to cooperate, in use, with corresponding first and second coupling formations Of the exterior bead member to selectively retain the said exterior bead member, one of the coupling formations of the second retention portion being resiliently 15 deformable to selectively permit separation of the exterior bead member from the unitary cross-sectional profile.
2, A sash member according to Claim 1 wherein in use the resiliently deformable coupling formation -s selectively accessible from: ah exterior perimeter of the unitary cross20 sectional profile while the exterior bead member -continues to ba retained by the second retention portion.
3. A sash member according to Claim 1 or Claim: 2 wherein the first: coupling: formation of the second retention portion defines one of a rebate: formation and a barb formation 25 which in use cooperates with the first coupling formation of an exterior bead member in the form of a corresponding other of a: barb formation and a rebate formation to selectively retain the said first: coupling formations in coupling engagement with one another.
4 A sash member according to Claim 3 wherein the first coupling formation of the so second retention portion is the resiliently deformable coupling formation,
5. A sash member according to any preceding claim wherein the second coupling formation: of the: secund retention portion defines a pivot about which the exterior bead member is in use rotatable to move the respective first coupling formations of the second 3δ retention portion arid the exterior bead member into ooupiing engagement with one another.
6, A sash member according to any preceding claim wherein· the second retention portion defines an abutment face against which an: abutment portion of the exterior bead member in use abuts, the abutment face being configured so that it an d the exterior glazing 5 face of the corresponding glazing panel are coplanar with one another when the said glazing panel is located in its desired depth-wise position, whereby in use a depth-wise spacing of an exterior bead fan® of the exterior bead member from the exterior glazing face of the glazing panel is defined by a depth-wise thickness of the abutment portion of the exterior bead member.
7, A sash assembly for a door or a window comprising a sash member including an elongate plastics sash body having a unitary cross-sectional profile, the unitary crosssectional profile including a first retention portion which retains an interior bead member.

the interior bead member defining a first abutment formation against which an interior

15 glazing face of a corresponding glazing panel abuts to locate the glazing panel in a desired depth-wise: position relative to the unitary oross-sectfonal profile, the unitary- crosssectional: profile also including a second retention portion which retains an exterior bead member having a glazing panel retention portion that defines a second abutment formation against which an exterior glazing face of the corresponding glazing panel abuts, the

20 second retention portion including first and second coupling formations which cooperate with corresponding first and second coupling formations of the exterior bead member to retain the said exterior bead member, one of the coupling formations of the second retention portion being resiiiently deformable to selectively permit separation of the exterior bead member from the unitary cross-sectional profile.
8. A sash assembly according to Claim 7 wherein following removal of the glazing panel the resilienfly deformable coupling formation is accessible from an exterior perimeter of the unitary oross-sectional profile while the exterior bead member continues to be retained by the second retention portion.
9. A sash assembly according to Claim 7 or Claim 8 additionally comprising a glazing packer lying; between the glazing: panel and the sash member.
10. A sash: assembly according to Claim 9 wherein following removal of the glazing 35 panel and the glazing packer, the resiiiently deformable coupling formation is accessible from: an exterior perimeter of the unitary cross-sectional profile while the exterior bead member continues to be retained by the second retention portion.
11. A sash assembly according to any of Claims 7 to 10 wherein bn® first coupling formation defines a rebate formation and the other first coupling formation defines a barb formation, the rebate and barb formations cooperating with one another to selectively s retain the said first coupling formations in coupling engagement with one another.
12, A sash assembly according to Claim 11 wherein one first coupling formation is the resiliently deformable coupling formation.

10
13. A sash assembly according to Claim 12 wherein the rebate formation is the resiliently deformable coupling formation.
14. A sash assembly according to any of Claims 7 to 13 wherein on® .second coupling formation includes a recess and the other second coupling formation includes a protrusion, is the recess and protrusion together defining a pivot about which the exterior bead member is rotatable to move the respective first coupling formations of the second retention: portion and the exterior bead member into coupling engagement with one another.
15. A sash assembly according to any of Claims 7 to 14 wherein the glazing panel 20 retention portion of the exterior bead member includes a chamfer which extends in a length-wise direction along the exterior bead member.

1 β. A sash assembly according to Claim 15 including first and second adjacent exterior bead members arranged relative to: one another in a run through joint oonfiguration,. an 2§ abutting: end of one exterior bead member lying opposite the chamfer of the glazing panel retention portion of the other exterior bead member having a chamfered undercut to compliment the said chamfer;
17. A sash assembly according to any of Claims 7 to 16 wherein the second retention 30 portion defines an abutment face against which an abutment portion of the exterior bead member abuts, the abutment face being configured so that it and the exterior glazing face of the correspond lug glazing panel are coplanar with one another, whereby a depth-wise spacing of an exterior bead face of the exterior bead: member from the exterior glazing face of the glazing panel Is defined by a depth-wise thickness of the abutment portion of 35 ths exterior bead member.