A mounting assembly

Abstract

A mounting assembly 16 or clip for securing a bar member against the glazing of a window, which sits with the groove of the frame and to which bars attach. The clip has a central body 42 and two arms

Description

The present teachings relate to a mounting assembly for a fenestration unit, and a fenestration unit comprising said mounting assembly. BACKGROUND Modern fenestration units typically comprise a frame assembly, into which a panel, such as a glass pane, or a sealed double glazing unit, is inserted in a direction generally normal to the plane of the panel. Typically, such frame assemblies are pre-assembled prior to the panel being inserted. A bead is then secured to the frame assembly after the panel has been inserted into the frame assembly, along with a gasket, for securing and sealing said panel within the frame assembly on the other side. In alternative beadless designs of fenestration units, the frame assembly and the glazing unit are assembled without the use of a glazing bead. Instead, the frame members have a U-shaped cross-section and connectors are used to join adjacent frame members around the glazing unit. For both beaded and beadless fenestration units, it is desirable in certain circumstances to have an effect on the exposed faces of the panel such as the appearance of a Georgian bar thereon. A Georgian bar is a cross or trellis effect on the glazing assembly giving the appearance that the glazing is made up of multiple smaller glazing panels in a plane. For reasons of manufacturing complexity, it is undesirable to manufacture genuine Georgian windows (i.e. with multiple discrete panels), but the appearance is often sought. Typically, clip assemblies are inserted in the fenestration unit or around the edge of the glazing unit prior installation of the glazing unit. Ancillary members are generally then required to retain the Georgian bars in the correct arrangement. This has to be done on site, and can result in misalignment of the Georgian bars. The present teachings seek to overcome or at least mitigate one or more problems associated with the prior art. SUMMARY According to the present invention, there is provided a mounting assembly for securing a bar member against a glazing unit as defined in claim 1, and a fenestration unit assembly for installing within an opening as defined in claim 22. A first aspect of the teachings provides a mounting assembly for securing a bar member against a glazing unit, of a fenestration unit, the mounting assembly configured to sit within a groove of a frame member of the fenestration unit, the groove defining opposing first and second side walls and a base wall. The mounting assembly comprises a body configured to sit within the groove of the frame member, a fixing formation configured to aid the securing of the body to the groove of the frame member, and a first arm and a second arm extending from the body, wherein the first arm is configured to extend over a first exposed face of the glazing unit, and the second arm is configured to extend over a second exposed face of the glazing unit. The first arm comprises a first formation configured for engagement with a first bar member, and the second arm comprises a second formation configured for engagement with a second bar member, and the mounting assembly is formed from more than one piece. Advantageously, the provision of a multi piece mounting assembly enables a portion of the mounting to be assembled to the frame member prior to the fitting of the glazing unit, which may provide for simplified and more accurate installation. The body may be generally planar and may be configured to extend between a first side and a second side of the groove of the frame member. The first arm and the second arm may be generally planar and may extend from opposing ends of the body. Advantageously, the planar body corresponds to the planar base wall and is space efficient. Planar arms sit flush to the exposed faces of the glazing unit and therefore enable the bar to sit flush against the glazing unit. The fixing formation may be a hole extending through the body. Advantageously, this enables the position of the mounting assembly to be fixed within the groove, and in particular into the softer material of a thermal break typically found in this location, and therefore reduces the likelihood of misalignment of the bar members. 28 11 24 The first formation and the second formation may be protrusions, and the first formation and the second formation may be linear protrusions. Advantageously, linear protrusions are simple to manufacture and have been found to improve the alignment of the bar members on the glazing unit. 5 The first formation and / or the second formations may comprise an undercut. Advantageously, this improves allows for the simple push fitting of a bar with a suitable corresponding formation to securely mount a bar thereto. The body may comprise a support arrangement configured to define a void between the base wall of the groove and the body. 10 Advantageously, this facilitates drainage of water in the groove and aids the correct alignment of the glazing unit within the frame. The mounting assembly may be manufactured from a thermoplastic material, for example uPVC. The body may comprises a first section and a second section. The first section of 15 the body may be integral with the first arm. The second section of the body may be integral with the second arm. Advantageously, this simplifies the assembly process when used in conjunction with a beaded frame assembly because the first section of the body and the glazing unit can be fitted before the second section of the body and a glazing bead. 20 One of the first section of the body and the second section of the body may comprise a guide for slidably engaging with the other one of the first section and the second section of the body. Advantageously, the guide ensures the correct positioning of the second section of the body upon assembly of the body and aligns the second section of the body in 25 relation to the first section. The guide may comprise a first leg arranged to slidably engage a channel located on the other of the first and second section to the guide. The channel may be formed on an underside of the first or second section of the body. The guide may comprise the first leg and a second leg. The first leg may be spaced apart from the second leg so that the fixing can extend therebetween. Advantageously, this space prevents the fixing from obstructing the assembly of the first section and second section. The first arm may comprise a male engagement formation configured to engage with a corresponding female engagement formation of the frame member Advantageously, the male engagement formation helps to improve the positioning of the mounting assembly within the groove. Additionally, the male engagement formation ensures there is sufficient space for a second section to be secured to the first section. The support arrangement may be a flange. The flange may comprise a cut-out for receiving the second section of the body. Advantageously, the flange creates the void between the base wall and the body for drainage and alignment of the glazing unit with the frame member, whilst retaining the second section within the cut-out. The body, the first arm and the second arm may be separate components. Advantageously, this arrangement enables the mounting assembly to be accurately fixed at a desired location on a frame member prior to fitting of the glazing unit. This improves the accuracy and alignment of components of the assembly. The first arm may comprise a first engagement portion configured to be engage with a first end of the body. The second arm may comprise a second engagement portion configured to engage with a second end of the body. Advantageously, this enables the arms, and therefore the bar members, to extend over opposing exposed faces of the glazing unit. The first engagement portion may be configured to at least partially engage with the first side wall of the groove, and the second engagement portion may be configured to at least partially engage with the second side wall of the groove. Advantageously, this helps to align the arms relative to the groove, and helps to secure the arms between the body and the side walls of the groove. The first engagement portion may engage with the first end of the body via a first upstanding projection of the body, and the second engagement portion may engage with the second end of the body via a second upstanding projection of the body. Advantageously, the projections enable the arms to be fitted between the upstanding projections and the side walls after the glazing unit has been installed, so the arms to not impede the assembly of the glazing unit to the frame. The first arm may comprise a first mounting portion configured to secure the first bar member. The second arm may comprise a second mounting portion configured to secure the second bar member. Advantageously, having separate mounting and engagement portions helps to inhibit the frame member obstructing the securing of the bar member. The support arrangement may be in the form of at least one foot configured to extend from the body in a direction towards the base wall of the groove. The body may comprise at least one protrusion configured to inhibit movement of the first and / or second arm in a direction parallel to a longitudinal axis of the frame member. Advantageously, this improves the positioning of the bar member, and helps inhibit the bar from siding during the assembly process. A further aspect of the teachings provides a fenestration unit assembly for installing within an opening, the fenestration unit assembly comprising a frame member comprising a groove, the groove defining opposing side walls and a base wall, a glazing unit, a marginal portion of which is positioned within the groove, a first bar member and a second bar member, and a mounting assembly. The mounting assembly comprises a body configured to sit within the groove of the frame member, a fixing formation configured to aid the securing of the body to the groove of the frame member, and a first arm and a second arm extending from the body, wherein the first arm is configured to extend over a first exposed face of the glazing unit, and the second arm is configured to extend over a second exposed face of the glazing unit. The first arm comprises a first formation configured for engagement with a first bar member, and the second arm comprises a second formation configured for engagement with a second bar member, and the mounting assembly is formed from more than one piece. 28 11 24 The fenestration unit may further comprise a fixing securing the mounting assembly to the base wall. The frame member may comprise interior and exterior metallic profiles and a non-5 metallic thermal break therebetween. The fixing may be secured mechanically to the thermal break. A non-metallic thermal break is typically a softer material which may be easier to secure mechanical fasteners such as screws, rivets of the like to, and may also distort less readily than metallic profiles such as aluminium. 10 The frame member may comprise a female engagement formation configured to receive a male engagement formation of the first arm. BRIEF DESCRIPTION OF THE DRAWINGS Embodiments will now be described with reference to the accompanying drawings, in which: 15 Figure 1 is a front view of a fenestration unit having a mounting assembly according to an embodiment of the present teachings; Figure 2 is a cross-sectional view of a fenestration unit on the plane z-z f Figure 1; Figure 3a is an isometric view of the mounting assembly of Figure 1; Figure 3b is a front view of the mounting assembly of Figure 1; 20 Figure 3c is an isometric view illustrating the assembly of the bar members with the glazing unit omitted for clarity; Figure 4 is a front view of an alternative fenestration unit having a mounting assembly according to an alternative embodiment of the present teachings; Figure 5 is a cross-sectional view of a fenestration unit on the plane x-x of Figure 25 4; Figure 6a is an isometric view of the mounting assembly of Figure 4; and Figure 6b is an exploded isometric view of the mounting assembly of Figure 4. DETAILED DESCRIPTION OF EMBODIMENT(S) Referring to Figure 1, a fenestration unitofan embodiment of the present teachings is generally indicated at 10, including a mounting assembly 16. The fenestration unit 10 has frame assembly 12 comprising frame members 12a-d and glazing beads 14a-d mounted thereto. The glazing beads 14a-d are fitted to the frame members 12a-d with ends finished at right angles. In alternative embodiments, the ends of the glazing beads 14a-d may be mitred, or any suitable shape. The fenestration unit 10 of this embodiment is suitable for a window, door or other type of fenestration, such as a vent or a cladding panel. The fenestration unit 10 includes a frame assembly 12 made up of a plurality of frame members 12a-d. The fenestration unit 10 is are suitable for a window, door or other type of fenestration, such as a vent or cladding panel. The frame assembly 12 receives and supports a pane or panel 18 such as a pane of glass, a double or triple glazed sealed unit, or a panel of wood, aluminium or other suitable material. It shall be appreciated that in the embodiments of Figure 1, the panel 18 is a glazing unit. Fenestration units 10, of this type are typically used in exterior walls of domestic and commercial buildings. It is therefore necessary that the fenestration unit 10 meets requirements for thermal insulation, sealing against water ingress, draughts etc. Referring to Figures 1 and 2, typically, the frame assembly 12 is a metallic frame assembly. A metallic frame assembly as described here may include features or components of some non-metallic or composite material, such as plastics material or wood. In particular, the frame members 12a-d may comprise exterior and interior aluminium profiles, which provide structural strength to the frame assembly 12, with a thermal break 19 of plastics or foam material sandwiched therebetween to meet insulation requirements. The frame assembly 12 of this embodiment comprises a 6063T6 aluminium alloy. However, it shall be appreciated that any other suitable material may be used. In one alternative, the frame assembly is of some other suitable material, such as some other 6063 series aluminium alloy, or a 6060 series aluminium alloy. The frame members 12a-d of this embodiment are typically manufactured by extrusion. However, it shall be appreciated that other suitable manufacturing methods may be used. Each frame member 12a-d comprises a pair of angled or mitred edges. The bevelled edges of each frame member 12a-d interface with a corresponding mitred edge of a neighbouring frame member 12a-d so as to form a mitre joint 13. In the embodiment illustrated in Figure 1, the frame assembly 2 is made up of four modular frame members 12a-d, with each frame member 12a-d comprising a respective pair of mitred edges. The mitred edges each interface with a respective mitred edge of a neighbouring frame member 12a-d to form four mitre joints 13a-d, one at each corner of the frame assembly 2. In other embodiments comprising more than four frame members, it shall be appreciated that the frame assembly may comprise more than four mitre joints. In alternative embodiments, the frame members may be joined at right angled edges as opposed to mitre joints, or any suitable shaped joint may be used. It shall be appreciated that the term 'exposed face' refers to the area of the glazing unit not enclosed by the frame members - i.e. the majority of the planar faces thereof, and the term 'marginal portion' refers to the area of the glazing unit enclosed and held within the frame members 12a-d. In order to provide a desirable aesthetic on the glazing unit 18, bar members 24 are secured over the first and second exposed faces 20, 22 of the glazing unit 18. In the embodiment of Figure 1, there is a first set 24 of three bar members secured to a first exposed face 20 of the glazing unit 18, and a second set 24 of three bar members secured to a second exposed face 22 of the glazing unit 18 in alignment with the first set. The first and second sets of bar members 24 each comprise a bar member 24a dimensioned to extend between the first frame member 12d and the fourth frame member 12b. The bar member 24a is secured to a first mounting arrangement 16 located in the first frame member 12d at a first end, and to a second mounting arrangement 16 located in the fourth frame member 12b. The bar members 24b, 24c are dimensioned to extend between the mounting assemblies 16 located in the second and third frame members 12a, 12c and a longitudinal midpoint of the bar member 24a. A clip 17 is provided to secure the bar members 24b, 24c to the glazing unit 18 at an end distal from the mounting assembly 16. However, in alternative embodiments any number of bar members may be provided depending on the aesthetic requirements of the fenestration unit. It shall be appreciated that although only one exposed face 22 of the glazing unit is illustrated in Figure 1, the pattern of the bar members is mirrored on the opposing exposed face 20 of the glazing unit 18. A mounting assembly 16 respectively sits within each of the frame members 12a-d. The mounting assembly 16 secures a first bar member 24a in relation to the first exposed face 20 of the glazing unit 18, and a second bar member 24b in relation to the second exposed face 22 of the glazing unit 18. Figure 2 shows a cross sectional view of a portion of the beaded fenestration unit 10 on the plane z-z in which the mounting assembly 16 sits within a groove 26 of the frame member 12d. All four of the frame members 12a-d include the groove 26, and the groove 26 defines a first side wall 28, an opposing second side wall 30, and a base wall 32. In the embodiment of Figure 2, the second side wall 30 is a side wall of the glazing bead 14. The glazing bead 14 retains the glazing unit 18 via a resilient gasket (not shown). In this embodiment, the gasket is push fitted into the channel 31 of the glazing bead 14 to create a seal against the glazing unit 18. In this embodiment, as well as the glazing bead 14, the frame member 12d comprises an opposing gasket (not shown) fitted into a further channel 31 formed in an in the side wall 28 on the opposite side of the glazing unit 18 to the glazing bead In this embodiment, the opposing gasket engages with the first exposed face 20, and the gasket of the glazing bead 14 engages with the second exposed face 22. The gaskets are manufactured from a rubber-like material, in particular Thermoplastic Elastomer (TPE) or EDPM, meaning upon installation of the glazing unit 18, the opposing gasket compresses due to the force exerted by the glazing unit 18. The use of the opposing gasket centralises the glazing unit 18 within the fenestration unit 10 because both gaskets compress by a similar amount relative to each other. This creates an effective seal and correctly aligns the glazing unit 18 through the compression of the gaskets whilst enabling the retention of the glazing unit 18 within the frame assembly 12. The mounting assembly 16 of the present teachings is illustrated in Figures 2, 3a and 3b. The mounting assembly 16 extends partially between the first side wall 28 and the second side wall 30 of the groove 26. A fixing 38 secures the mounting assembly 16 within the frame member 12d. The mounting assembly 16 includes a corresponding fixing formation 39. In this embodiment, the fixing formation is a hole 39 through which the fixing 38 extends. The fixing 38 is in the form of a fastener 38. The fastener 38 also extends through a corresponding hole in the thermal break 19 of the frame member 12d. Mounting to the thermal break 19 instead of the aluminium profiles of the frame member 12-d may be advantageous because the plastics material of the thermal break 19 is less susceptible to distortion and easier to screw into than the aluminium. In other embodiments the fixing may be adhesive or some form of frictional or interference fit into the groove 26. In this embodiment, as the bar members 24 extend along central axes of the glazing unit, the mounting assembly 16 is fastened at the longitudinal midpoint of the frame member 12d. The mounting assembly may be fastened into any location along the frame member, depending on the desired visual effect. In order to facilitate drainage and ensure the glazing unit is aligned within the frame member, it is desirable for a void to be formed between the base wall 32 of the groove 26 and the mounting assembly 16. A support arrangement 40 is therefore provided as part of the mounting assembly 16. The support arrangement 40 extends from the mounting assembly 16 in a direction towards the base wall 32 of the groove 26. A male engagement formation 34 extends from the mounting assembly in a direction towards the first side wall 28 of the groove 26. In this embodiment, the male engagement formation 34 is in the form of an angled ledge 34 extending from the mounting assembly 16. Upon assembly, the male engagement formation 34 is located within a female engagement formation 36 of the frame member 12d, so as to position the mounting assembly 16 with respect to the side wall of the groove 26 and the mounting assembly 16. In alternative embodiments, any suitably shaped male engagement formation may be used, for example a barb. Figures 3a and 3b show a detailed view of the mounting assembly 16 of the embodiment of Figure 2. The mounting assembly 16 includes a body 42, a first arm 44 and a second arm 46. The body 42 extends at least partially between the side walls 28, 30 of the groove 26 in a direction generally perpendicular to a longitudinal axis of the groove 26. The first arm 44 extends from a first end of the body 42, and the second arm 46 extends from an opposing second end of the body 42. The first and second arms 44, 46 extend in the direction generally perpendicular to the base wall 32 of the groove 26. The body 42, first arm 44 and second arm 46 are substantially planar. 5 Additionally, the body 42, the first arm 44 and the second arm 46 are substantially rectangular. The width of the bar members 24 is greater than the width of the first arm 44 and the second arm 46, such that when assembled the first arm 44 and the second arm 46 are hidden from view by the bar members 24. In alternative embodiments, the body, first arm, and second arm may be different shapes to one 10 another. The body, the first arm and the second arm may be any suitable shape, for example the arms could be triangular. The mounting assembly 16 is formed from more than one piece. Put another way, the assembly formed from the body 42, the first arm 44 and the second arm 46 is a multi-piece assembly. The mounting assembly 16 being multi-piece assembly 15 enables a portion of the mounting assembly 16 to be assembled within the groove 26 of the frame member 12d prior to installation of the glazing unit 18. CM The body 42, the first arm 44 and the second arm 46 are manufactured from a thermoplastic material, such as uPVC, however any suitable material may be used, for example an aluminium pressing The body 42, the first arm 44 and the second 20 arm 46 are manufactured using injection moulding, however any alternative manufacturing method may be used, for example die-casting. The first arm 44 includes a first formation 48 for engaging with the first bar member (not shown), and the second arm 46 includes a second formation 50 for engaging with the second bar member 24. The first formation 48 and the second formation 25 50 are located at an end of the first arm 44 and at an end of the second arm 46 distal from the body 42. The first formation 48 is in the form of a first linear protrusion 48, and the second formation 50 is in the form of a second linear protrusion 50. The bar members 24 include a corresponding linear notch for fastening to the linear protrusions 48, 50. 30 The first linear protrusion 48 and the second linear protrusion 50 include an increase in cross-sectional profile, for example a bulbous cross-sectional profile. This enables the first and second linear protrusion 48, 50 to be push-fitted or snap-fitted into the notches of the bar members 24. The first linear protrusion 48 and the second linear protrusion 50 also include an undercut, which allows for the simple push 35 fitting of a bar with a suitable corresponding formation to securely mount the bar member 24 thereto. The first linear protrusion 48 and the second linear protrusion 50 extend partially over the first arm and second arm 44, 46, for example over more than half of the first arm and second arm. This enables the bar to extend normal to the frame member 12d. The bar members 24 have a constant cross-sectional profile. This enables the bar members 24 to be cut to varying lengths, depending on the size of the glazing unit 18, or the aesthetic requirements of the arrangement of the bar members 24. Any part of the bar member 24 is able to push-fit or snap-fit onto the linear protrusions 48, 50. In alternative embodiments, the formations 48, 50 may be in the form of a notch, or any other suitable mounting formation may be used. The formations 48, 50 may be non-linear, for example circular. Alternatively, the formations 48, 50 may be omitted and the bar member 24 may be secured to the first and second arms 44, 46 via an adhesive. The first formation 48 is located at the centre of the first arm 44 and the second formation 50 is located at the centre of the second arm 46. This helps to ensure the bar members 24 are positioned symmetrically on the opposing exposed faces 20, 22 of the glazing unit 18. The first formation 48 is integrally formed with the first arm 44, and the second formation 50 is integrally formed with the second arm 46. In alternative embodiments, the first and second formations 48, 50 could be in the manufactured separately and attached to the arms 44, 46. The body 42 includes a first section 52 and a separate second section 54. The first section 52 of the body is integral with the first arm 44, and the second section 54 of the body is integral with the second arm 46. The first section 52 of the body 42 includes the hole 39 for receiving the fastener 38. As such, the first section 52 of the body 42 can be fastened into the frame member 12d prior to assembly of the second section 54 of the body 42. The hole 39 is countersunk and receives a countersunk fastener 38. This enables the fastener 38 to sit flush relative to the body 42 of the mounting assembly 16. The first section 52 of the body 42 includes a channel 56 and a cut-out 58 for receiving the second section 54 of the body 42. The second section 54 of the body 42 has a guide 60, 62 to slidably engage with the channel 56 and the cut-out 58 of the first section 52. In this embodiment, the guide includes a first leg 60 and a second leg 62. The channel 56 is defined by a first and second wall located at opposing edges of the first section 52. The channel 56 extends along an underside of the first section 52. In alternative embodiments, the channel 56 could extend along the top surface of the first section 52, or along side walls of the first section 52. The channel 56 guides the second section 54 into the first section 52, and aids the correct alignment of the first section 52 relative to the second section 54. The channel 56 extends along an entirety of the underside of the body 42. The cut-out 58 is positioned level with the channel 56 such that the second section 54 sits within the channel 56 and within the cut-out 58 when assembled. To enable this arrangement, the length of the first section 52 is less than the length of the second section 54. However, in alternative embodiments, the cut-out 58 may be omitted and the first section 52 may be longer than the second section 54. The assembled position of the second section 54 within the channel 56 is variable, meaning the length of the body formed by the first section 52 and the second section 54 is variable. This arrangement enables the mounting assembly 16 to accommodate different thicknesses of glazing unit, and different corresponding frame thicknesses. The first leg 60 and the second leg 62 are spaced apart such that the fastener 38 can extend therebetween. When assembled, an outer edge of the first leg 60 abuts against the first side wall of the channel 56, and an outer edge of the second leg 62 engages with a second wall of the channel 56. A width of the first section 52 from the outer edge of the first leg 60 to the outer edge of the second leg 62 is therefore approximately equal to a width between the walls of the channel 56. It shall be appreciated that in alternative embodiments, the guide may include any number of legs, for example one leg. Alternatively, any suitable form of guide may be used. The guide may be located on the first section of the body and the channel may be located on the second section of the body. The support arrangement of the mounting assembly 16 is illustrated in detail in Figures 3a-b. In this embodiment, the support arrangement is provided as the flange 40 extending from the end of the first arm 44 distal form the formation 48. The first section 52 of the body extends from a central portion of the flange 40, at a location above a lowermost edge of the flange 40. Whilst only one mounting assembly 16 is illustrated in Figure 2, it shall be appreciated that at each of the four sides of the frame assembly 12 there may be a mounting assembly 16 of substantially the same configuration. A method of assembling the fenestration unit of the first embodiment embodiment shall now be described. The opposing gasket is first fitted to the channel 31 of the first side wall 28 with the abutment of the first frame member 12d. The first section 52 of the body 42 and integral first arm 44 is then fitted with the groove 26 of the frame member 12d. The correct positioning of the mounting assembly 16 within the groove 26 is aided by the installation of the male engagement formation 34 of the first arm 44 within the female engagement formation 36 of the frame member 12d. The first arm 44 of the mounting assembly 16 exerts a force on the gasket so as to maintain a seal. The fastener 38, for example a self-tapping screw 38, is screwed into the corresponding holes of the body 39 and into the thermal break 19 of the frame member 12d in order to secure the body 42 within the groove 26. Second, third and fourth mounting assemblies 16 are then secured in the frame members 12a, 12c, 12b using the same method. The four frame members 12a-d are assembled to from the rectangular frame assembly 12. The glazing unit 18 is then offered up to the frame assembly 12 and positioned such that the second arm 46 extends over the first exposed face 20 of the glazing unit 18. The second section 54 of the body 42 and the integral second arm 46 is then assembled with the first section of the body 42. To enable the assembly, the first and second legs 60, 62 of the second section are slid into the channel 56 of the first section 52 until the second arm contacts the face of the glazing unit 18. The channel 56 ensures the correct alignment of the first section 52 relative to the second section 54, and guides the first and second legs 60, 62 into the cut-out 58 of the flange 40 such that the first and second legs 60, 62 are in an assembled state. The space formed between the first and second legs 60, 62 enables the first and second legs 60, 62 to slide either side of the fastener 38, without the fastener obstructing the assembly process. The glazing beads 14a-d are then fitted by insertion into a void formed between the second arm 46 and the second side wall 30 of the groove 26 to complete the assembly of the frame members 12a-d. Referring to figure 3c, the bar members 24 are then mounted onto the linear protrusions 48, 50 of the first and second arm 44, 46. Firstly, the clip 17 is positioned on the second exposed face 22. The bar member 24a is push-fitted at the first end to the second linear protrusion 50 associated with the first frame member 12d, and at the second end to the second linear protrusion 50 associated with the fourth frame member 12b. The bar members 24b, 24c are then push-fitted at first ends to the second linear protrusions 50 associated with the second and third frame members 12a, 12c, and to the clip 17 at the second ends. This is process is repeated for the first exposed face 20. An alternative embodiment of the fenestration unit and mounting assembly is illustrated in Figures 4, 5, 6a and 6b, and is generally indicated at 110 and 116. Like parts to the embodiments of Figures 1, 2 and 3 are labelled by like reference numerals with prefix "1". Any differences with embodiments of Figures 1, 2, 3a and 3b are discussed below. The frame assembly 112 of the Figure 4 embodiment is a beadless frame assembly 112, meaning that the glazing unit 118 is secured within the frame assembly 112 without the use of the glazing bead 14. This is achieved by providing the frame members 112a-d with the groove 126, or channel - i.e. the frame members have a 'U'-shaped cross-sectional profile to receive the pane or panel 3 securely as discussed in more detail below. The frame members 112a-d are provided with corner connectors and corner spacers (not shown) to secure the frame members 12a-d at each mitre joint and align the glazing unit 118 within the frame assembly 112. However, in alternative embodiments, any suitable component may be used to secure mitred frame members, and the corner spacers may be omitted. In alternative embodiments, the frame members may be joined at right angled edges as opposed to mitre joints, or any suitable shaped joint may be used. Figure 5 shows a cross sectional view of a portion of the beadless fenestration unit 110 on the plane x-x, in which the mounting assembly 116 sits within the groove 126 of the frame member 112d. The mounting assembly 116 extends substantially fully between the first side wall 128 and the second side wall 130 of the groove 126. In this alternative embodiment, first and second gaskets 115, 121 are fitted into the frame member 112d so as to abut with the first and second exposed faces 120, 122 of the glazing unit 118. The method of assembly shall be described in greater detail at a later stage within this application. A first engagement formation 134a and a second engagement formation 135 extend from opposing ends of the mounting assembly 116. In this embodiment, the first engagement formation 134 and the second engagement formation 135 are in the form of a first and second set of protrusions 134, 135. Upon assembly, the first set of protrusions 134 abut against a first corresponding notch 136a located in the first side wall 128. The second set of protrusions 135 abut against a second corresponding notch 136b located in the second side wall 130. This arrangement helps to improve the positioning of the mounting assembly 116, and therefore the glazing unit 118, within the frame member 112d. This arrangement also provides space for the fitting of first and second arms 144 and 146 as described below. With reference to Figures 5, 6a and 6b, a fixing 138 secures the mounting assembly 116 within the frame member 112d in. The mounting assembly 116 includes a corresponding fixing formation 139. In this embodiment, the fixing formation is a hole 139 through which the fixing extends. The fixing 138 is in the form of a fastener 138. The fastener 138 also extends through a corresponding hole in the thermal break 119 of the frame member 112d in a similar way to the first embodiment, or similar alternative fixings may be used as in the first embodiment. The hole 139 is located in the centre of the body 142 to facilitate the installation of the body 142 with the groove 126. The hole 139 is countersunk and receives a countersunk fastener 138. This enables the fastener 138 to sit flush relative to the body 142 of the mounting assembly 116.The bar members are positioned similarly to the first embodiment. A support arrangement 140 of this embodiment is also provided as part of the mounting assembly 116 to facilitate drainage along of the groove 126 and aid the alignment of the glazing unit 118 within the frame member 112d. The support arrangement 140 extends from the mounting assembly 116 in the direction towards the base wall 132 of the groove 126. Whilst only one mounting assembly 116 is illustrated in Figure 5, it shall be appreciated that at each of the four sides of the frame assembly 112 there may be a mounting assembly 116 of substantially the same configuration. The body 142, the first arm 144 and the second arm 146 are manufactured as three separate components. This arrangement enables the body 142 to be installed without the first and second arms 144, 146, prior to the glazing unit 118 being fitted. This prevents the first and second arm 144, 146 from obstructing the fitting process. In contrast to the embodiment of Figures 3a-b the first and second arms 144, 146 and the body 142 are symmetrical about a central longitudinal axis of the body 142. However, in alternative embodiments the first and second arms 144, 146 and the body 142 may not be symmetrical. The body 142 includes a first upstanding projection 164 and a second upstanding projection extending 166 from opposing ends of the body 142. The first upstanding projection 164 engages with the first arm 144 when the mounting assembly 116 is assembled. The second upstanding projection 166 engages with the second arm 146 when the mounting assembly 116 is assembled. The first upstanding projection 164 and the second upstanding projection 166 extend in a direction generally parallel to the first and second side walls 128, 130 of the groove 126. The first arm 144 is made up of a first engagement portion 168 for engaging with both the first upstanding projection 164 and the first side wall 128 of the groove 126, and a first mounting portion 172 for mounting the first bar member (not shown) in relation to the first exposed face 120 of the glazing unit 118. The second arm 146 is made up of a second engagement portion 170 for engaging with both the second upstanding projection 166 and the second side wall 130 of the groove 126, and a second mounting portion 174 for mounting the second bar member 124 in relation to the second exposed face 122 of the glazing unit 118. The first and second engagement portions 168, 170 each engage with the respective first and second upstanding projection 164, 166 on a first face 168a, 170a, and with the respective first and second side walls 128, 130 on an opposing second face 168b, 170b. The first faces 168a, 170a of both the first arm 144 and the second arm 146 are substantially planar, but have ramped surfaces so as to guide the first and second arms 144, 146 over the first and second sides walls 128, 130 upon assembly. In this embodiment, the first and second mounting portions 172, 174 are greater in length than the first and second engagement portions 168, 170. The first mounting portion 172 is connected to the first engagement portion 168 by a first deviation in profile 176, and the second mounting portion 174 is connected to the second engagement formation 170 by a second deviation in profile. The first and second deviation in profile 176, 178 extend at an angle from the first and second engagement portion 168, 170 to the first and second mounting portions 172, 174. This means that a longitudinal axis of the first engagement portion 168 is located internally of a longitudinal axis of the first mounting portion 172, and a longitudinal axis of the second engagement portion 170 is located internal of a longitudinal axis of the second mounting portion 174. The first and second deviation in profile 176, 178 ensure the first and second mounting portions 172, 174 sit flush against the first and second exposed faces 120, 122 when assembled. The mounting assembly 116 is provided with the support arrangement 140 and the first and second set of protrusions 134, 135 to aid the correct alignment of the body 142 and the first and seconds arms 144, 146 in the both direction parallel to the longitudinal axis of the frame member 112d and the direction perpendicular to the base wall 132 of the frame member 112d The support arrangement 140 is in the form of four feet 140a-d located at the four corners of the substantially rectangular body 142. Each of the four feet 140a-d extend generally downwards from the body 142 towards the base wall 132 of the groove 126. The first set of protrusions 134 and second set of protrusions 135 described above each include two protrusions 134a, 134b, 135a, 135b. The four protrusions 134a, 134b, 135a, 135b are also located at the four corners of the substantially rectangular body 142. The first set of protrusions 134a, 134b inhibit movement of the first arm 144 in the direction parallel to the longitudinal axis of the frame member, and the second set of protrusions 135a, 135b inhibit movement of the second arm 146 in the direction parallel to the longitudinal axis of the frame member. A method of assembling the fenestration unit 110 according to the Figure 4 embodiment shall now be described. The body 142 is firstly installed in the groove 126 of the first frame member 112d. The first upstanding projection 164 is located proximate the first side wall 128, and the second upstanding projection 166 is located proximate the second side wall 130. The fastener 138, for example in the form of a self-tapping screw 138, is then inserted into the holes 139 in the body 142 and screwed into the thermal break 119 at the base of the groove 126. This process is repeated for the second, third and fourth frame members 112a, 112c, 112b. The connectors (not shown) are then inserted into the frame members 12a-d, and the first, second and third frame members 12d, 12a, 12c are secured together so as to form a U-shaped assembly. The frame members and connectors can be assembled in an alternative order, depending on preference. Furthermore, it shall be appreciated that fewer than two, or more than two connectors may be provided and secured at the respective mitre joints 13a-d. Furthermore, in an alternative embodiment, each of the frame members 12a-d may be located about the glazing unit 3 prior to the step of securing a connector at each of the respective mitre joints 13a-d. The glazing unit 118 is positioned within the U-shaped assembly formed by the frame members 12a, 12c, 12d, using suitable spacers, as required, such that the glazing unit 118 is received within the grooves 126 of the first, second and third frame members 12d, 12a, 12c. This is achieved by being slid into the groove parallel to the frame members 12d, 12a, 12c as opposed to being offered up transversely as in the first embodiment. The body 142 of the mounting assembly 116 is seated between the base wall 132 of the groove 126 and the glazing unit 118. The fourth frame member 12b is then installed at the final side of the glazing unit 118 so as to complete the rectangular frame member assembly 112. The first and second arms 144, 146 are wedged into the gap formed between the first upstanding projection 164 and the first side of the groove 126, and the second upstanding projection 166 and the second side of the groove 126 respectively. As such, the mounting assembly 116 substantially fills the space between the first side wall 128 and the second side wall 130. This may improve both sealing and alignment of the fenestration unit 110. Once each of the frame members 112a-d have been secured at each of the respective mitre joints 113a-d, the first and second gaskets 115, 121 are applied to each of the frame members 112a-d as shown. The bar members 124 are then mounted onto the linear protrusions 148, 150 of the first and second arm 144, 146 in a similar manner to that of the first embodiment and as shown in figure 3c. Firstly, the clip 117 similar to clip 17 of the first embodiment is positioned on the second exposed face 122. The bar member 124a is push-fitted at the first end to the second linear protrusion 150 associated with the first frame member 112d, and at the second end to the second linear protrusion 150 associated with the fourth frame member 112b. The bar members 124b, 124c are then push-fitted at first ends to the second linear protrusions 150 associated with the second and third frame members 112a, 112c, and to the clip 117 at the second ends. This is process is repeated for the first exposed face 120. Although the teachings have been described above with reference to one or more preferred embodiments, it will be appreciated that various changes or modifications may be made without departing from the scope as defined in the appended claims. 28 11 24

Claims

1. A mounting assembly for securing a bar member against a glazing unit of a fenestration unit, and for sitting within a groove of a frame member of the fenestration unit, the groove defining opposing first and second side walls and a base wall, the mounting assembly comprising:a body for sitting within the groove of the frame member;a fixing formation for aiding the securing of the body to the groove of the frame member; anda first arm and a second arm extending from the body, the first arm for extending over a first exposed face of the glazing unit, and the second arm for extending over a second exposed face of the glazing unit;wherein the first arm comprises a first formation for engagement with a first bar member, and the second arm comprises a second formation for engagement with a second bar member; andwherein the mounting assembly is formed from more than one piece.

2. The mounting assembly of claim 1, wherein the body is generally planar for extending between a first side and a second side of the groove of the frame member, optionally wherein the first arm and the second arm are generally planar and extend from opposing ends of the body.

3. The mounting assembly of claim 1 or claim 2, wherein the fixing formation is a hole extending through the body.

4. The mounting assembly of any preceding claim, wherein the first formation and the second formation are protrusions, optionally wherein the first formation and the second formation are linear protrusions.

5. The mounting assembly of any preceding claim, wherein the first formation and / or the second formations comprise an undercut.

6. The mounting assembly of any preceding claim, wherein the body comprises a support arrangement for defining a void between the base wall of the groove and the body.

7. The mounting assembly of any preceding claim, wherein the mounting assembly is manufactured from a thermoplastic material, for example uPVC.

8. The mounting assembly of any preceding claim, wherein the body comprises a first section and a second section, optionally wherein the first section of the body is integral with the first arm, and optionally wherein the second section of the body is integral with the second arm.

9. The mounting assembly of claim 8, wherein one of the first section of the body and the second section of the body comprises a guide for slidably engaging with the other one of the first section and the second section of the body.10.The mounting assembly of claim 9, wherein the guide comprises a first leg arranged to slidably engage a channel located on the other of the first and second section to the guide.11.The mounting assembly of claim 9 or claim 10, wherein the channel is formed on an underside of the first or second section of the body.

12. The mounting assembly of any of claims 9 to 11, wherein the guide comprises the first leg and a second leg and wherein the first leg is spaced apart from the second leg so that the fixing can extend therebetween.

13. The mounting assembly of any preceding claim, wherein the first arm comprises a male engagement formation for engaging with a corresponding female engagement formation of the frame member.

14. The mounting assembly of claim 6, wherein the support arrangement is a flange, optionally wherein the flange comprises a cut-out for receiving the second section of the body.

15. The mounting assembly of any of claims 1 to 7, wherein the body, the first arm and the second arm are separate components.16.The mounting assembly of any of claims 1 to 7 or claim 15, wherein the first arm comprises a first engagement portion configured to engage with a first end of the body, and wherein the second arm comprises a second engagement portion configured to engage with a second end of the body.

17. The mounting assembly of claim 16, wherein the first engagement portion is for at least partially engaging with the first side wall of the groove, and wherein the second engagement portion is for at least partially engaging with the second side wall of the groove.

18. The mounting assembly of any of claims 13 to 17, wherein the first engagement portion engages with the first end of the body via a first upstanding projection of the body, and the second engagement portion engages with the second end of the body via a second upstanding projection of the body.

19. The mounting assembly of any of claims 1 to 7 or claims 15 to 18, wherein the first arm comprises a first mounting portion for securing the first bar member, optionally wherein the second arm comprises a second mounting portion for securing the second bar member.

20. The mounting assembly of any of claims 15 to 19 when dependent on claim 6, wherein the support arrangement is in the form of at least one foot for extending from the body in a direction towards the base wall of the groove.21.The mounting assembly of any of claims 1 to 7 or 15 to 20, wherein the body comprises at least one protrusion for inhibiting movement of the first and / or second arm in a direction parallel to a longitudinal axis of the frame member.

22. A fenestration unit assembly for installing within an opening, the fenestration unit assembly comprising:a frame member comprising a groove, the groove defining opposing side walls and a base wall;a glazing unit, a marginal portion of which is positioned within the groove;a first bar member and a second bar member; anda mounting assembly comprising;a body located within the groove of the frame member;a fixing formation configured to aid the securing of the body to the groove of the frame member; anda first arm and a second arm extending from the body, wherein the first arm is configured to extend over a first exposed face of the glazing unit,28 11 24and the second arm is configured to extend over a second exposed face of the glazing unit;wherein the first arm comprises a first formation configured for engagement with the first bar member, and the second arm comprises a 5 second formation configured for engagement with the second bar member;andwherein the mounting assembly is formed from more than one piece.

23. The fenestration unit of claim 22, further comprising a fixing securing the 10 mounting assembly to the base wall.

24. The fenestration unit of claim 23 wherein the frame member comprises interior and exterior metallic profiles and a non-metallic thermal break therebetween, optionally wherein the fixing is secured mechanically to the thermal break.1525. The fenestration unit of any one of claims 22 to 24, wherein the frame member comprises a female engagement formation configured to receive a male engagement formation of the first arm.

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