GB2576349A

GB2576349A - Improvements in or relating to sash members

Info

Publication number: GB2576349A
Application number: GB1813363.7A
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: GB201813363D0

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 receive and selectively retain an interior bead member 20, the interior bead member defining a first abutment formation 22. An internal glazing face 26 of a corresponding glazing panel 28, in use, abuts against the first abutment portion in order to locate the glazing panel in a desired depth wise position relative to the unitary cross-sectional 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 66 against which an exterior glazing face 42 of the corresponding glazing panel in use abuts. The abutment face 64 is configured such that it and the exterior glazing face are coplanar with one another when the glazing panel is located in its desired depth wise position, whereby in use a depth wise spacing of and exterior bead face 70 of the exterior bead member is defined by a depth wise thickness 72 of the abutment portion of the exterior bead member.

Description

IMPROVEMENTS IN OR RELATING TO

SASH MEMBERS : Axwmv<vn»»»imrtCTi»*v»»*K*x\xx*xx<«r«

This invention relates to a sash member for a door or a window and a sash member § 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 ιό 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 the glazing panel in a desired depth-wise position relative to the unitary cross-sectional profile, the unitary cross-sectional profile also including a second retention portion to selectively retain an exterior bead member having a glazing panel retention portion that defines a second 15 abutment formation against which an exterior glazing face of the corresponding glazing panel in use abuts, the second retention portion defining an abutment face against which an abutment portion of the exterior bead member in use abuts, the abutment face being configured so that if 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 20 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 25 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 that the provision of a relatively thin abutment portion, which itself saves on 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, Mi provides fur a corresponding sash member assembly in which an exterior bead member appears to be essentially flush-mounted relative to the corresponding glazing panel which is particularly desirable in some architectural and/or building installations.

Preferably the second retention portion includes first and second coupling formations to 35 cooperate, in use, with -corresponding first and second coupling formations c-f the exterior bead member to retain the said 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 us® 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.

The second coupling formation of the second retention portion may define 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 the exterior bead member into coupling:

is engagement with one another.

The foregoing features desirably permit ready retention of the exterior bead member relative to the unitary oross-sectional profile in a manner that additionally facilitates,; in use, assembly of an associated sash assembly.

In a preferred embodiment of the invention one of the coupling formations of the second retention portion is resiilently deformable to selectively permit separation of the external bead member from the unitary cross-sectionai profile.

The inclusion of a resiilently deformable coupling formation within the: second retention portion:, which selectively permits the separation of the exterior bead member from the 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:, providing a: resiilently deformable coupling; formation within the second retention portion minimises the risk of damaging the exterior bead member, e.g. by forcing an otherwiserelatively rigid exterior bead member out of shape.

In a still further preferred embodiment: of the invention, in use the resiilently deformable coupling formation is selectively 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.

Having a resiilently deformable coupling formation that is selectively accessible from an exterior perimeter of the unitary crosmseotign profile, while the exterior bead member continues to be retained by ths second retention portion, is advantageous because it allows, e.g, an installer or other technician, to deform th® resiifontly deformable coupling 'When needed to allow removal of the exterior bead member,

According to a second aspect of the invention there is provided a sash assembly far a door er a window comprising a sash member including an elongate plastics sash body having a unitary cross-sectional profile, the unitary cross-sectional 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 glazing face of a corresponding glazing panel is abuts to locate the glazing panel in a desired depth-wise position relative to the unitary oross-sectional profile, the unitary cross-sectional 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 second retention portion defining an abutmeniface is 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 corresponding 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 the exterior bead member,

Preferably the second retention portion of the sash member includes first and second coupling formations which cooperate with cortuspondlng first and second coupling formations of the exterior bead member to retain the said 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 engagement with one another.

In another preferred embodiment, of the invention one secund coupling formation includes a recess and the other second coupling formation includes 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.

One of th® coupling formations of the second retention portion may be resilientiy deformable to selectively permit separation of the external bead member from the unitary cross-sectional profile.

s Preferably following removal of the glazing panel the resilientiy deformable coupling formation is selectively 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.

to The foregoing features of the sash assembly of the invention share the benefits of the corresponding features of the sash member of the assembly, as described hereinabove.

In a still further preferred embodiment of the invention the glazing panel retention portion of the exterior bead member includes a chamfer which extends in a length-wise direction IS along the exterior bead member.

Preferably sash assembly includes first and second adjacent extenor bead members arranged relative to one another in run through joint configuration, an abutting end of one exterior bead member lying opposite the chamfer of the glazing panel retention portion of 20 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, 25 whereby a degree of expansion and contraction of the exterior bead members, which may differ to the expansion/contraction 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.

There now follows a brief description of preferred embodiments of the invention, by way of non-limiting exampie, with reference being made to the following figures In which:

Figure 1 shows a cross-sectional view from a first end of a portion of sash assembly 35 according to an embodiment of the invention;

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

Figure 2(b) shows an elevational view from In-front of the sash, assembly shown In Figure 1, and

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 ths invention, which may he 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 to invention, and in particular a sash member 12 which includes an elongate plastics sash body T4 that has a unitary cross-sectional profile 16.

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 farmatfon 22, in the form of a first rubber gasket 24 (although this need not necessarily be the case), agalnstwhich an interior glazing fane 26 of a corresponding glazing panel 28 abuts. This locates the glazing panel 28:, which in the embodiment shown lies on an optional glazing: packer 30, In a desired 20 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 selectively retains an exterior bead member 34.

The exterior bead member 34 Is more rigid than the unitary cross-sectional profile 16 and preferably is formed, eg. 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 3& 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 additionally defines an abutment face 64 against which an abutment portion 66 of the exterior bead member 34 abuts, More particularly, the 38 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 depthwise thickness 72 of the abutment portion 66 of the exterior bead member 34.

in the embodiment shewn, 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, 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,.

io

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

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

In any event, however,: the rebate and barb: formations 48. 56 cooperate with one another, as shown in Figure 1, to setecfively retain the first coupling formations 44A, 44B in coupling engagement with on© another.

In addition to the foregoing, the rebate formation 48 is resiliency deformable which, as described in more detail below, selecti vely permits separation of the exterior bead member 34 from the unitary cross-sectional profile 16.

Meanwhite, the second coupling formation 46A of the second retention portion 32 mclodes 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 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 34 includes a chamfer 58 which, as shown: in Figure 2(b), extends In a length-wise Lw direction along the exterior bead: member 34,

Moreover, since the sash assembly10 shown includes first and second adjacent: exterior bead members 34 arranged relative to one another in a run through joint configuration, i.e. in an arrangement in which an abutting end' 60 of one exterior bead member 34 lies s opposite the chamfer 58: of the glazing panel retention portion 16 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 38 of the other exterior bead member 34.

W 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.

In use, one way in which an installer may assemble the sash assembly 10 described to hereinabove is by first of ail securing, i.e. retaining, an exterior bead member 34 to 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. and thereafter pivoting the exterior bead member 34 about the pivot 56 to move the respective first coupling fbrmatfons 44A, 44B, i.e. the corresponding 20 rebate and barb formations 48,50, pf the second 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 23 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 of 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 the building.

In the event that it is desired to remove one or more exterior bead members 34 from an 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 exterior bead member 35 34 from the associated unitary cross-sectional profile 16 of the sash member 12.

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

Moreover, in circumstances where a glazing panel 28, and possibly a glazing packer 30 have already been installed, the resiliently deformable rebate formation 48 becomes accessible in the same manner following removal of the glazing panel 28 and. as necessary, the glaring packer 30, e.g. following removal (from within an interior of an 1δ associated building) of the intenor bead member 20.

Claims

CLAIMS:

1. A sash member, fora door or a window, comprising an elongate plastics sash body having a unhary cross-sectional profile including a first retention portion to receive: and

5 selectively retain an interior 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 cross-sectional profile, the unitary cross-sectional profile also including a second retention portion to selectively retain an exterior bead member having a glazing i o panel retention 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 defining an abutment face against which an abutment portion of the exterior bead member in use abuts, the abutment face being configured sc that it and the exterior glazing face of the corresponding glazing panel are coplanar with one another when the said glazing panel is is located in its desired depth-wise position, whereby in use a depth-wise spacing of an exterior bead face ofthe 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,

20 2. A sash member according to Claim 1 wherein the second retention portion includes first and second coupling formations to cooperate, in use, with corresponding first and second coupling formations of the exterior bead member to retain the said exterior bead member.

,2s 3. A sash member according to Claim 2 wherein 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 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 2 or Claim 3 wherein the second coupling formation of the second retention portion defines s pivot about which the exterior bead member is in use rotatable io move the respective first coupling formations of the second retention portion and the exterior bead member into coupling engagement with one 35 another.:

δ< A sash member according to any of Claims 2 to 4 wherein one of the coupling formations of the second retention portion is resiliently deformable to selectively permit separation of the external bead member from the unitary cross -sectional profile.

δ 6. A sash member according: to Claim 5 wherein in use the resiliently deformable coupling formation is selectively accessible from an exterior perimeter of the unitary crosssectional profile while the exterior bead member continues to be retained by the second retention portion.

1'8 7. A sash: assembly for a door or a window comprising a sash member including an elongate plastics sash body having a unitary oross-sectlonai 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 glazing face of a corresponding glazing panel abuts to locate the glazing panel in a desired:

15 depth-wise position: relative to the unitary cross-sectional 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: second retention portion defining an abutment face against which an abutment portion of so the exterior bead member abuts, the abutment face being configured so that it and the exterior glazing face of the corresponding glazing panel are coplanar with c-ne another, whereby a depth-wise spacing of an exterior bead face of th® 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.
2δ

8, A sash assembly according to Claim 7 wherein: the second retention portion of the sash member includes 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.

9. A sash assembly according to Claim 8 wherein one first coupling formation defines a rebate formation and the other first coupling formation defines a barb formation, the rebate arid barb formattons cooperating with one another to selectively retain the said first coupling formations: in coupling engagement: with one another.

in A sash assembly according to Claim 8 or Claim 9 wherein on® second coupling formation includes a recess and the other second coupling formation includes 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.
5 11, A sash assembly according to any of Claims 8 to 10 wherein one of the coupling formations of the: second retention portion is resiliently deformable to selectively permit: separation of the external bead member from the unitary cross-sectional profile.

12. A sash assembly according to Claim 11 wherein following removal of the glazing ip panel the resiliently deformable coupling formation is selectively accessible from an exterior perimeter of the unitary cross -sectional profile white the exterior bead member continues to be retained; by the: second retention portion.

13. A sash assembly according to any of Claims 7 to 12 wherein the glazing panel is retention portion of the exterior bead member includes a chamfer which extends in a length-wise direction along the: exterior bead member.

14. A sash assembly according to Claim 13 including first and second adjacent exterior bead members arranged relative to one another in run through joint configuration, an 20 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.