Anti-tamper device

Abstract

An alignment system for location of an anti-tamper structure (50a, Fig 6) for a hinged window or door comprises an alignment structure 10c comprising an anchoring region 12c and a spacer body 20c. The

Description

Field of the Invention The present invention relates to an anti-tamper arrangement to inhibit forcible entry through a window or door. More specifically, the present invention relates to an alignment system comprising an alignment structure to assist with alignment of components of an anti-tamper arrangement. Background Traditional casement windows or hinged windows are typically latched at their handle side. Some break-in strategies avoid the handle side and focus, instead, on the hinged side of a window, based on the premise that a hinge connection may be weaker than the latched handle side. One type of forcible entry tactic involves levering a window out of its frame at the hinged side, seeking to deform, break or otherwise detach hinge elements, and prising open a window sufficiently to allow the still-latched handle side to be disengaged or bent away. The weakness of a hinged side may also be exploited in door panels, hatches and other hinged barriers. Several attempts are known to reinforce the hinged side of a panel, which typically involve a trade-off between ease of installation, alignment of reinforcing elements, and, in particular, balancing the effective operation of an anti-tamper component to prevent a forcible break-in attempt versus the risk of anti-tamper components interfering with the normal day-to-day use of a window. The present invention seeks to ameliorate at least some of the aforementioned issues. Summary of the Invention In accordance with a first aspect of the invention, there is provided an alignment system as defined in claim 1, for location of an anti-tamper structure for a hinged window or door. The alignment system comprises an alignment structure comprising an anchoring region and a spacer body, wherein the anchoring region comprises at least one engagement region for abutment relative to two corner surfaces forming a corner region of the window or door, and wherein the spacer body is shaped to define a location for the anti-tamper structure relative to the anchoring region. The invention relates to an anti-tamper component, such as an anchorable security device comprising a retainer structure. The component may be a door or window fixing comprising a hook-profiled ledge, providing a retainer structure, integrally formed with and extending from a base plate, providing an anchorable structure forming an anchoring region. Such anti-tamper components are frequently installed to either or both of a panel or frame of a window system. The location at which such anti-tamper components are installed on a panel or frame is often provided by a frame profile defining the peripheral edges of the panel and frame. The profile may be from timber, aluminium, uPVC or other suitable material. The profile may be routed or formed from extruded members, typically including a so-called Eurogroove for location of other fixings such as locks, latches, hinges etc. The edges extend along the outer periphery of a panels and along the inner periphery of a frame, and are typically profiled to define between them a cavity or free space when closed. A skilled person will appreciate that anti-tamper components may be attached along the peripheral profiles, to sit within the free space, such that they avoid coming into contact during normal opening and closing of a panel in its frame about a predefined hinge axis. However, during a forcible entry attempt resulting in the dislodging of the panel from the hinge axis, the retainer of the anti-tamper component, if appropriately installed, will catch and resist removal of the panel from the frame. Anti-tamper components of this type are typically of elongate form, for instance bent from sheet metal, to be positioned in an appropriate location along the elongate extension of a peripheral profile. Anti-tamper components may be installed as pairs, one of a pair on the frame, the other of the pair on the panel. Likewise, anti-tamper components may be installed in multiple locations, e.g. on opposite sides of a panel, e.g. at the top and the base of a side-hung panel, or on the left and right side of a tophung panel. The suggestion made herein is to provide an alignment structure, in the form of a spacer structure, suitable for positioning an anti-tamper structure, that can be positioned relative to a corner region of a frame or panel. The alignment structure is provided with an anchoring region comprising at least one engagement region to provide an abutment relative to two surfaces of the corner region, thereby providing a reference position. For instance, the anchoring region may be provided by a knee structure comprising two engagement regions, each one of the two engagement regions for abutment against one of the two corner surfaces of a frame corner. As will be appreciated, most window or door systems have quadrilateral shape and so the corner regions are understood to be typically the right-angled corners of the frame and panel, respectively. As most corner regions are right-angled, engagement regions of the anchoring region may also be oriented at a right angle to each other. By abutment relative to two corner surfaces, it is meant that the engagement regions are not necessarily provided for direct contact with the corner surfaces. A practical problem during the development of the invention was that many window systems commonly provided with anti-tamper components are friction stay hinge window systems. In such window systems, stay hinges may be provided as prefabricated subassemblies typically occupying the corner region of a panel and frame. A hinge subassembly, herein, is a part or assembly of a hinge mechanism to be installed to a frame or panel, respectively. For instance, some forms of hinge mechanism are provided in two subassemblies, one to be installed on a frame, and another to be installed on a panel, to be attached to each other when installing the panel in its frame. For practical purposes, the anchoring region of the spacer body may be designed such that one engagement region can be located or attached to a hinge subassembly occupying one corner surface of a frame or panel, and such that another engagement region of the anchoring region can be located on, or abutted against, the other corner surface. In this manner, the spacer body is located at a predefined position relative to the corner of the panel or frame even if that corner is occupied by a hinge component or hinge subassembly. The predefined position will be chosen to be outside the movement range of the hinge subassembly to avoid interference with the normal operation of the hinge, although may otherwise be as close to the hinge mechanism as permitted by the spacer. In practice, it is believed that the spacer body allows installers to position anti-tamper components closer to the hinge assembly than they might otherwise have done when estimating an appropriate position. In some embodiments, the at least one engagement region is attachable to a hinge subassembly and the spacer body provides a predefined location for the anti-tamper structure relative to the hinge subassembly. For instance, the anchoring region may be shaped to slide onto, or clip onto, a profile of a hinge subassembly. Different hinge subassemblies for different window geometries may have different design and stack height. As such, the anchoring region may be shaped for use with a specific version of hinge subassembly. Likewise, many hinge subassemblies comprise tracks for slidable engagement and / or stacked hinge members. The anchoring region may be shaped to slide onto, or clip onto, a profile of such a track or stack arrangement. An appreciation underlying the embodiment was that a common form of hinge subassembly includes a nose cap or end cap, often in the form of a separate component to define an end of a track. The alignment structure of the invention may be attached instead of, or as replacement of, a conventional end cap. In some embodiments, the hinge subassembly is part of a stay hinge. The stay hinge may be a friction stay hinge. In some embodiments, the anchoring region is integral with the hinge subassembly. In accordance with some embodiments, a hinge subassembly may be provided with an integral alignment structure. For instance, a strut member of a hinge subassembly may be formed with an integrally shaped alignment structure that may also be shaped to define the afore-mentioned location for the anti-tamper structure. In some embodiments, the at least one engagement region is configured for abutment with two outward-facing corner surfaces of an inside corner. One or two engagement regions may be flat surfaces, to engage a flat surface underneath, or to be slidable on a Eurogroove structure or the like. Alternatively, one or two engagement regions may be profiled complementarily to the corner surfaces to which they attach. For instance, an engagement region may comprise the profile of an end cap, or of a shuttle portion of a stay hinge, to fit into a track for that end cap or shuttle portion. In such embodiments, an engagement region may comprise an end stop structure to hold the anchoring region to an end of a hinge subassembly. In other words, for a right-angled corner, the engagement regions are angled 270 degrees relative to each other. In some embodiments, the at least one engagement region is configured for abutment with two inward-facing corner surfaces of a framing corner. In other words, for a right-angled corner, the engagement regions are angled 90 degrees relative to each other. In some embodiments, the alignment system comprises two alignment structures, one alignment structure for a frame of a hinged window or door, and another alignment structure for a panel of the hinged window or door. In some embodiments, the alignment system comprises two anti-tamper structures of same engagement profile, or of same shape. In many embodiments, the anti-tamper structures have the same shape. In some embodiments, the anti-tamper structures may have the same engagement profile, e.g. the same hook profile, but may be of different length, such that the hook profile extends over different lengths of, for instance, a shorter first anti-tamper component relatively to a longer anti-tamper component. For instance, the invention may allow a better alignment of components and thereby enable the use of shorter anti-tamper components than would otherwise be the case. In some embodiments, the location defined by the spacer body comprises a profiled portion, the profiled portion for abutment with an anti-tamper structure. For instance, the location may be provided by an edge profile of a free end. The edge profile may be curved, e.g. recessed. The edge profile may be semicircular. The edge profile may comprise two edges at an angle relative to each other, i.e. may be tapered in a trapezoidal or triangular (V-shaped) manner. The two edges may be straight or curved. In this manner, the anti-tamper component can be positioned as intended by abutment against the profiled portion. In effect, two alignment mechanisms may be utilised, one alignment mechanism in the form of the engagement region to align with the corner region, and another alignment mechanism in the form of the profiled portion to align with the anti-tamper structure. In some embodiments, the location defined by the spacer body comprises a bed for location of the anti-tamper structure. For instance, the location may be provided by a frame structure or socket structure providing a bed into which the anti-tamper component is to be seated. In that case, an edge of the frame, socket, or other structure providing the bed, may constitute an edge profile. The shape of the socket structure or bed may correspond to a footprint of a base portion of the anti-tamper structure or a portion thereof. In some embodiments, the anti-tamper structure is integral with the alignment structure, thereby being located at the defined location relative to the anchoring region. As will be appreciated, in embodiments in which the alignment structure is integral with a hinge subassembly, the hinge subassembly and the alignment structure and the antitamper component may be constituted by an integrally formed component. In some embodiments, the alignment structure comprises a compression-assist mechanism, wherein the compression-assist mechanism is positioned spaced from the predefined location for the anti-tamper structure. A compression-assist mechanism may be a weather sealing often found in an end cap or nose cap, often in the form of a recess engageable by a finger structure. In some embodiments, the alignment structure may be attached instead of an end cap. In that case, the alignment structure may provide an end cap structure, and may include a slope region or socket with curved or gradient profile on one of the panel and frame. The purpose of a compression-assist mechanism is to cooperate with a finger structure on the respective other of the panel and frame, the finger structure engaging the slope region or socket upon closing of the panel and urged along the curved or gradient profile to thereby assist compression of the panel into the frame during closing. The compression may contribute to improved weather sealing. Such compression-assist mechanisms are typically located in a corner of a frame and panel, typically in the form of a slope or socket in a frame corner, and a finger structure in a panel corner. To avoid interference with the operation of a compression assist mechanism, embodiments of the invention may comprise an integral compression assist slope, socket, or other compression-assist profile. In this manner, the position of a compression-assist mechanism as well as the position of the anti-tamper component relatively to the compression assist mechanism can be defined by an alignment system disclosed herein. In some embodiments, the alignment structure comprises at least two parts including a first part providing the anchoring region, a second part providing the spacer body shaped to define a location for the anti-tamper structure, wherein the first part and the second part are attachable to one another to form the alignment structure, wherein the first part and the second part comprise mutually engageable connector structures attachable to one another to connect the first part and the second part thereby to form the alignment structure. In some embodiments, one of the parts comprises a socket of the compression-assist mechanism. In some embodiments, the socket of the compression-assist mechanism is comprised in the first part providing the anchoring region, and wherein, optionally, the mutually engageable connector structures are spaced from the socket. In accordance with a second aspect of the invention, there is provided a hinge subassembly comprising a hinge mechanism for attachment to a frame or panel, and further comprising an alignment structure to provide an alignment system according to any one of the embodiments of the first aspect. The hinge subassembly may be a stay hinge, such as a friction stay hinge, for instance of the type comprising a stack of articulatable struts. Such a subassembly may be provided in collapsed form, as an elongate stack for installation in a frame profile or panel profile. Typical conventional hinge subassemblies are known to a skilled person, typically for stack heights of 13 mm or 17 mm for positioning on a Eurogroove. In accordance with embodiments of the second aspect, a hinge subassembly is provided with an alignment structure according to any one of the embodiments of the first aspect. The alignment structure may be pre-assembled with the hinge subassembly, or may be integrally formed with the hinge subassembly. The embodiments provides that the alignment structure can be installed at the same time, in the same installation step, as the hinge subassembly. In some embodiments, the hinge subassembly of the second aspect is comprised in a kit of parts comprising two hinge subassemblies, one for attachment to a frame, the other for attachment to a panel, each comprising a alignment structure to provide an alignment system according to any one of the embodiments of the first aspect. As will be appreciated, one hinge subassembly may be for the frame, and may comprise an alignment structure comprising an engagement region for an inner corner of the frame. The other hinge subassembly may be for the panel, and may comprise an alignment structure comprising an engagement region for an outer corner of the panel. The two hinge subassemblies together form a hinge and may be separable to allow a panel to be removed from its frame. A kit of parts may comprise multiple pairs of subassemblies, e.g. for two corners of a top-hung panel ora side-hung panel. In accordance with a third aspect of the invention, there is provided a door or window frame system comprising a panel hingedly mounted in a frame, wherein at least one of the panel and the frame is provided with an alignment structure according to any one of the embodiments of the first aspect. As will be appreciated, in many embodiments, both of the panel and the frame may be provided each with at least one alignment structure according to any one of the embodiments of the first aspect. In some embodiments, the system further comprises an anti-tamper structure installed to one of the panel and frame positioned in abutment with the alignment structure. In some embodiments, the system comprises two anti-tamper structures of identical shape. An optional aspect of the invention is that the alignment structures may be shaped such that a pair of anti-tamper components intended to cooperate with each other may be of the same engagement profile, or of same shape, that may be used on both the frame and panel. However, this is not necessarily a requirement of all embodiments, and, in some other embodiments, the system comprises two or more anti-tamper structures of different shape. For instance, one anti-tamper structure may comprise a hook profile, and the other anti-tamper structure may comprise a slot profile or ledge profile, to be engaged by the hook profile. In accordance with a fourth aspect of the invention, there is provided a method of manufacturing a door or window frame system according to any one of the embodiments of the first aspect or the second aspect, the method comprising providing one of a frame and a panel, installing a first alignment structure according to any one of the embodiments of the first aspect in abutment relative to two corner surfaces of a corner of the one of the frame and the panel, and leaving a free edge of the first alignment structure exposed for subsequent attachment of a first anti-tamper component. Embodiments of the fourth aspect may utilise embodiments of the second aspect. In other words, the first alignment structure may be provided pre-assembled or integrally formed with a hinge subassembly, the installation of the hinge subassembly resulting in the installation of the first alignment structure. In some embodiments, the method comprises attaching the first anti-tamper component to the one of the frame and the panel, comprising abutting an end of the first anti-tamper component with the free edge of the first alignment structure, and affixing the first anti-tamper component to the one of the frame and the panel while in abutment with the end of the first anti-tamper component. In some embodiments, the method comprises providing another one of a frame and a panel, installing a second alignment structure according to any one of the embodiments of the first aspect in abutment relative to two corner surfaces of a corner of the other of the frame and the panel, and leaving a free edge of the second alignment structure exposed for subsequent attachment of a second anti-tamper component. When embodiments of the fourth aspect utilise embodiments of the second aspect, the second alignment structure may be provided pre-assembled or integrally formed with a hinge subassembly, the installation of which results in the installation of the second alignment structure. In some embodiments, the method comprises attaching the second anti-tamper component to the other of the frame and the panel, comprising abutting an end of the second anti-tamper component with the free edge of the second alignment structure, and affixing the second anti-tamper component to the other of the frame and the panel while in abutment with the end of the second anti-tamper component. The attachment of the first and second anti-tamper components may be carried out after both the panel and the frame have each been provided with the respective first and second alignment structures. In accordance with a fifth aspect of the invention, there is provided a method of manufacturing a door or window frame system according to any one of the embodiments of the first aspect, the second aspect, or the third aspect, the method comprising providing one of a frame and a panel, installing a first alignment structure according to any one of the embodiments of the first aspect or the second aspect in abutment with two corner surfaces of a corner of the one of the frame and the panel, the alignment structure comprising an integral anti-tamper component. In some embodiments, the method comprises providing the other of the frame and the panel, installing a second alignment structure according to any one of the embodiments of the first aspect or second aspect in abutment with two corner surfaces of a corner of the other of the frame and the panel, the alignment structure comprising an integral anti-tamper component. Embodiments of the fifth aspect correspond to embodiments of the fourth aspect, however the alignment structure and the anti-tamper component are provided by a unitary component or by a preassembled subassembly, such that the anti-tamper component is affixed to the frame or panel, respectively, by attachment of the alignment structure, or by a hinge subassembly incorporating the alignment structure. The alignment structure provides that the anti-tamper portion of the alignment structure is spaced by a pre-defined distance from the corner of the frame or panel, respectively. Embodiments of the fifth and fourth aspects may be combined, e.g. by installing an alignment structure with integral anti-tamper component on one of the frame and the panel, and installing an alignment structure with separately attachable anti-tamper component to the other of the frame and the panel. In some embodiments of the fourth aspect or the fifth aspect, the method comprises assembling the panel in the frame to form a window system. In some embodiments of the fourth aspect or the fifth aspect, the method comprises attaching a plurality of first alignment structures to a plurality of frames in a first production line, attaching a plurality of second alignment structures to a plurality of panels in a second production line, providing a pair of corresponding frame and panel with anti-tamper components, and assembling a window system from the pair of corresponding frame and panel. The anti-tamper components may be attached to the frame and the panel before the frame and panel are assembled to a window system. A benefit of the invention is believed to be that avoids a need to install anti-tamper components to already-assembled panel and frame systems, because the alignment structure provides for an aligned position of the anti-tamper component before the frames and panels are assembled. Thereby, alignment of corresponding anti-tamper components can be achieved without access to both panel and frame at the same time. Any one or more of the embodiments disclosed in relation to the first aspect, the second aspect, and / or the third aspect may be combined with, or formed or used by, any one or more of the embodiments of the fourth and fifth aspects. Likewise, any one or more of the embodiments disclosed in relation to the fourth and fifth aspects may be used to form any one or more embodiments of the other aspects. Description of the Figures Exemplary embodiments of the invention will now be described with reference to the Figures, in which: Figure 1 is an isometric illustration of a prior art window and frame system; Figure 2 is an isometric illustration of a prior art anti-tamper arrangement; Figures 3A to 3C are isometric, front and side views of an alignment structure; Figures 4A to 4C show the element of Figures 3A to 3C with an anti-tamper structure; Figures 5A to 5C are isometric, front and side views of another alignment structure; Figure 6 is an isometric illustration of an embodiment; Figure 7 illustrates the Figure 6 embodiment installed in a window and frame system; Figure 8A is a section showing an anti-tamper arrangement in a first condition; Figure 8B is a section showing the Figure 8A arrangement in a second condition; Figures 9A to 9C show a variant of the embodiment of Figures 3A to 3C; Figures 10A to 10C show another variant of the embodiment of Figures 3A to 3C; Figures 11A to 11C show different views of another variant of an alignment structure, formed from multiple connectable parts; and Figures 12A to 12D show different views of yet another variant of an alignment structure, formed from multiple connectable parts. Description Figure 1 illustrates a portion of a window system 1 comprising a frame 3a for a hinged panel 3b. While reference is made herein to a window system, the frame and panel arrangement may be part of a door or hatch. The window system 1 is representative of a casement window comprising a profiled panel 3b to close into a profiled frame 3a. The frame 3a and panel 3b are articulatable relative to each other via a stay hinge 5 comprising a first hinge subassembly 5a for location in the inner corner of a frame, and a second hinge subassembly 5b for location on the outer corner of a panel. A variety of hinge mechanisms, including stay hinge mechanisms formed from hinge subassemblies, are known to a skilled person and not described in detail herein. The first and second hinge subassemblies may be part of a pre-assembled hinge assembly and are understood to be cooperable, e.g. by assembly via sliding engagement, to form a stay hinge 5. As will be appreciated, the window system 1 may comprise a pair of hinges, each pair comprising first and second subassemblies 5a, 5b, each pair located at an opposite edge (e.g. top and bottom for a side hung panel, or left and right for a top hung panel) between a panel and its frame. Conveniently, the first and second subassemblies 5a, 5b may be positioned in or on a Eurogroove or other suitable structure on the inner perimeter of the frame 3a, and on the outer perimeter of the panel 3b, respectively. In this manner, the hinge mechanism may be concealed from view when collapsed between the closed panel and frame. It was found that the hinged side of a frame, or the side opposite the latched side, is often selected as target during a forcible entry attempt, which may involve an attempt to prise a locked panel out of its frame at the hinged side, as an attacker may not expect the hinged side to be latched by a lock bolt. Figure 2 shows a prior art security system comprising a pair of anti-tamper devices 7a, 7b, one anti-tamper device 7a located on the frame 3a, the other device 7b on the panel 3b. Each anti-tamper device is located in a groove 4a and 4b respectively, for instance in a Eurogroove. The anti-tamper device may be shaped to fit to a profile of a window system, or may be installed with packers, to ensure a stacking height for reliable engagement during a forcible entry attempt, and to avoid engagement during normal opening and closing of the panel. The anti-tamper components may comprise hooked profiles operating in a manner illustrated in Figures 8A and 8B below. Typical profiled frame and panel members may comprise a peripheral groove, often a so-called Eurogroove, extending circumferentially in the extension of the edge of the frame along the outer periphery of the panel and the inner periphery of the frame. Due to the elongate extension of the peripheral groove along the frame, it will be appreciated that the position and number of the anti-tamper devices 7a and 7b can be selected relatively freely. For instance, Figure 2 illustrates two exemplary candidate positions for an anti-tamper device 7a along the groove 4a. It will be appreciated that the position of the anti-tamper device 7b on the groove 4b needs to match that of the device 7a in order to provide an effective anti-tamper performance. Furthermore, the position of the anti-tamper device 7a and / or 7b is chosen away from the stay mechanism, to avoid interference with its normal day-to-day use. Some stay mechanisms comprise a weather sealing to help to draw a window into the closed position. Such a weather sealing may be provided by a mechanism assisting with the compression of a panel when closed in its frame, and may comprise a chuted socket 9a on one of the subassemblies 5a, 5b, and a finger 9b on the other of the subassemblies 5a, 5b, wherein engagement of the engagement of the finger 9b in the chuted socket 9a pulls the panel 3b towards the frame 3a upon closing. It would be undesirable for the anti-tamper devices 7a, 7b to interfere with the operation of the weather sealing. While the arrangement of Figure 2 provides an improved hinge protection compared to Figure 1, the inventors appreciated that the freedom to re-position the anti-tamper components can introduce difficulties in ensuring an appropriate position along the length extension of the frame or panel, respectively. To mitigate the risk of misalignment, typical anti-tamper devices are of elongate form, e.g. providing a hook, ledge, and / or slot comprising an elongated profile, to provide some tolerance for poor positioning while also ensuring sufficient overlap between two cooperating anti-tamper components. A suggestion in the present disclosure is to provide an alignment structure that is attachable to, or integrated with, the stay mechanism. This allows the anti-tamper device to be located at a pre-defined position relative to the stay, and therefore at a pre-defined position relative to the corner of a frame or panel, while also avoiding a risk of interference with the stay mechanism. Figures 3A to 3C illustrate an isometric view, front view and side view, respectively, of a spacer component 10, constituting an alignment component or alignment structure. The spacer component 10 comprises a foot 12 constituting an anchoring region, the foot 12 comprising an arrangement of anchoring holes 14 to receive a fastener for affixing the spacer component 10 to a surface underneath. The foot 12 may be profiled corresponding to a shuttle structure of the hinge mechanism, to fit onto a track of the hinge mechanism. The foot 12 may also comprise an end stop structure to ensure its seating at the end of the hinge mechanism, and thereby in a corner of a frame profile. The spacer component 10 comprises an integral socket structure 18 shaped to provide part of a compression-assisting mechanism, which may provide a weather sealing. Furthermore, the spacer component 10 comprises a spacer body 20, here in the form of a flat shelf extending perpendicularly to the foot 12, and comprising a free edge 22. The free edge 22 is contoured complementarily to an edge contour 54 of an antitamper structure (to be described below). The spacer body 20 has a width 20w and a thickness 20t that corresponds to the groove width of a Eurogroove, although a specific width of the spacer body 20 is not necessarily a requirement of the invention. Likewise, an outer face 24 of the spacer body 20 is, in this embodiment, generally flat, although could comprise a profile complementing a groove profile to which it is intended to be attached. Figures 4A to 4C illustrate an isometric view, rear view and side view, respectively, of a spacer component 10 together with an anti-tamper component 50. The spacer component 10 corresponds to the component 10 described in Figures 3A to 3C. The anti-tamper component 50 comprises a base plate 52 of generally flat shape of elongate extension between two ends 54. The ends 54 comprise an edge contour, here generally semicircular, that is complementary to the free edge 22 of the spacer body 20, here a semicircular recess. Along one edge of the elongate extension, the anti-tamper component 50 comprises a retainer structure 56, here in the form of an elongate, hook-profiled ledge having an extension of several centimetres. The centre of the retainer structure 56 is provided with a position mark 58. The base plate 52 comprises an arrangement of fastener holes to accommodate fasteners, here illustrated by screws. It will be appreciated that the anti-tamper component 50 may be used as part of an anti-tamper arrangement to reinforce a window system 1 such as shown in Figure 1 or 2, for instance to be attached to a Eurogroove of a frame 3a and / or a panel 3b. The spacer component 10 provides a locating structure, here in the form of the free edge 22, for location of the anti-tamper component 50. In this manner, the spacer component 10 comprises a body that is shaped to define a location, i.e. the free edge 22, for aligned positioning of the anti-tamper component 50. The foot 12 may be attached to, or integrated with, a hinge subassembly 5a. The foot 12 may be shaped complementarily to a portion of the hinge subassembly 5a, for instance to slide between tracks or other suitable guide structures. Conveniently, the foot 12 of the spacer component 10 comprises a profile that allows it to replace a conventional nose cap or a conventional end cap. Alternatively, the foot 12 and spacer component 10 may be integrally formed with a component or section of a hinge subassembly. As another option, the foot 12 may be shaped to engage a profile of a frame or panel directly, e.g., to sit between a corner and a hinge subassembly. The spacer component 10 is shaped such that it includes a socket structure 18 in a location in which a conventional hinge subassembly may comprise a chute socket 9a of a weather sealing. As will be appreciated, the socket structure 18 may comprise a curved or gradient slope structure suitable for guiding a finger structure of a compression-assist mechanism into a compressed position. As such, for instance, the spacer component 10 can be provided as an alternative to the chute socket 9a. In that case, it can also be ensured that the free edge 22 is appropriately positioned relatively to the socket structure 18, e.g. spaced apart by a sufficient distance, defined by the dimensions of the spacer body 20. Specifically, the spacer body 20 may be relatively short, and the free edge 22 may be spaced from the foot 12 by a relatively small distance, and may therefore be closer to the socket structure 18 than an installer might otherwise choose in the absence of the spacer component 10. As illustrated herein, the complementary shapes of the free edge 22 and of the end 54 are of a form providing a single point location, e.g. a geometry comprising one or more semicircles, and / or one or more double-tapers or V-profiles, such that sliding the antitamper component 50 along a Eurogroove towards the free edge 22 provides a defined alignment location. The complementary shapes of the free edge 22 and the end 54 may be mirror-symmetric such that the anti-tamper component 50 can be installed with either of its free ends 54 abutting the free edge 22. However, this is not necessarily a requirement of all embodiments. For instance, opposite free ends 54 of an anti-tamper device 50 may comprise individual, different contours, e.g. opposite handedness, to allow only one of the ends 54 to fit the free edge 22. Likewise, the complementary shapes of the free edge 22 and the end 54 may comprise multi-point locations, e.g. a toothed profile providing two or three locations, each defining a different position in the direction between outer and inner face of a panel. Although not illustrated in Figures 4A to 4C, it will be appreciated that, once aligned, the spacer component 10 may be anchored to the hinge subassembly, or hingecarrying side, via the anchoring holes 14, whereas the anti-tamper component 50 is anchored to the transverse side, e.g., to an upright profile if the spacer component is anchored to a horizontal profile. As such, the free edge 22 and the end 54 serve, in this embodiment, to assist with the location of the anti-tamper component 50 relative to the spacer component 10, while each of the anti-tamper component 50 and the spacer component 10 are attached individually to different locations of the frame 3a or panel 3b, respectively. Once the anti-tamper component 50 is attached, the spacer component 10 may be removed. However, it is contemplated to provide the spacer component 10 in a form in which it can remain in the window assembly, to provide a visual indication that the anti-tamper component 50 is located in a pre-defined position. In that case, the spacer component 10 may contribute weather sealing functionality through a compression-assist mechanism such as the socket structure 18. Figures 5A to 5C illustrate an isometric view, front view and side view, respectively, of a second spacer component 30 as an example of another, second, alignment structure or alignment component. The second spacer component 30 is provided for locating an anti-tamper component 50 to an outer corner of a panel in a position that is aligned with another corresponding anti-tamper component on a frame. The anti-tamper component 50 may be of identical design as the anti-tamper component 50 illustrated in Figures 4A to 4C. The second spacer component 30 is shaped to be anchored to the panel and to hold the anti-tamper component 50 in a pre-defined position relative to the first spacer component 10, when this is used at an inner edge of a frame of a panel. The second spacer component 30 comprises features corresponding to the first spacer component 10. As such, the second spacer component 30 comprises a foot 32 in the form of a panel comprising fixing hole 34 (not illustrated in the Figures) and a spacer body 40 providing a free edge 42 for location of an edge contour of an anti-tamper structure. The spacer body 40 is oriented at a right angle relative to the foot 32 and provided with two lateral notches 38 and reinforcing ribs 36 spanning the space between the spacer body 40 and the foot 32. The two lateral notches 38 allow the foot 32 to be attached or located to a hinge subassembly. The reinforcing ribs 36 help to ensure that a predefined angle is maintained between the foot 32 and the spacer body 40 while the second spacer component 30 is used for location of an anti-tamper device 50. While not illustrated in Figures 5A to 5C, the second spacer component 30 may comprise an integral finger structure as part of a compression-assist mechanism. Such a finger structure may be arranged to project from the second spacer component 30 to allow it to engage a corresponding socket structure 18 upon closing the panel. Figures 6 and 7 show an isometric view of a hinge assembly, here a lower hinge of a side-hung panel, comprising a first hinge subassembly provided with a first spacer component 10, and a second hinge subassembly provided with a second spacer component 30. Figure 7 illustrates the hinge subassemblies installed on a frame 60a and panel 60b, respectively. As will be appreciated, the first spacer component 10 facilitates the aligned positioning of a first anti-tamper component 50a relative to the first hinge subassembly, and, consequently, relative to the corner region of the frame 60a. Likewise, the second spacer component 30 facilitates the aligned positioning of a second anti-tamper component 50b relative to the second hinge subassembly, and, consequently, relative to the corner region of the panel 60b. Herein, the frame 60a comprises a framing corner with two inward-facing corner surfaces, at a right angle to each other. The panel 60b comprises an inside corner with two outward-facing corner surfaces. The framing corner and inside corner provide reference regions for the hinge subassemblies and, thereby, for aligned location of the first and second spacer components 10, 30. In the example of Figures 6 and 7, two anti-tamper components of same shape are used as the first anti-tamper component 50a and the second anti-tamper component 50b. The use of the spacer components 10 and 30 achieves that the two anti-tamper components 50a, 50b are aligned relative to each other along the elongate extension of the frame profile and panel profile, respectively. It is thought that a good alignment is usually achieved when both anti-tamper components mutually overlap. However, the invention is thought to enable other alignment, e.g. of a shorter first anti-tamper component positioned relatively to a longer anti-tamper component. The first antitamper component 50a is located relatively close to the framing corner of the frame 60a, while avoiding interference with a weather sealing and with the operation of the hinge mechanisms. The spacer body 20 and the spacer body 40 allow the quality of the alignment to be confirmed visually, e.g. during a quality inspection, for instance by visually confirming the absence of a gap at the joint between the anti-tamper component 50a and the spacer component 10, and between the anti-tamper component 50b and the spacer component 30, respectively. Figures 8A and 8B show section views through a profile of the hinged side of a window system in the region of the anti-tamper components 50a, 50b, to illustrate an exemplary operation of the anti-tamper components. In Figure 8A, the panel 60b is closed in its frame 60a and the first and second anti-tamper components 50a, 50b are located spaced apart from each other in a pre-engaging configuration. In this arrangement, the first and second anti-tamper components 50a, 50b avoid contact with each other during normal opening and closing of the panel. Figure 8B illustrates a situation in which a forced load is applied in an attempt to dislodge the panel 60b out of the frame 60a at the hinged side, for instance while the handle side (not shown) is latched in the frame 60a. As indicated in Figure 8B, the retainer elements of the two anti-tamper components 50a, 50b come into engagement and hinder further opening of the panel out of its frame, thereby frustrating a forced entry attempt. Due to the use of the spacer components 10, 30 (not shown in Figure 8B), the anti-tamper components 50a and 50b are better aligned to engage each other along practically their full length extension, and are therefore more effective. It is believed that the better alignment achievable by use of the alignment structures allows the anti-tamper components to be made smaller, or shorter, without compromising their effectiveness, due to the better degree of overlap achieved from the aligned components. In this regard, it may be appreciated that such anti-tamper components may be required in large numbers by trades such as window providers and home developers, and any reduction in size and mass can amount to a significant saving in material and resources, and contribute to a product that is more environmentally friendly than previous solutions. Furthermore, the alignment structures are believed to encourage positioning of the antitamper components closer to a hinged side, and / or closer to a socket structure 18, where the anti-tamper components are believed to be more effective compared to a position closer towards the centre of a frame or panel profile. To avoid interference with conventional weather sealing mechanisms, the spacer component 10 comprises an integral compression-assist mechanism, thereby inherently maintaining an appropriate spaced-apart relationship between the compression-assist mechanism and the anti-tamper component 50. Likewise, the second spacer component 30 may comprise an integral finger structure 31 (illustrated in Figure 6), and / or may be positioned on a hinge subassembly such that it avoids interference with a finger structure. As will be appreciated, the use of a socket structure and finger structure is optional and not a requirement of all embodiments. Some embodiments may use another form of compression-assist mechanism, or no compression-assist mechanism. Figures 9A to 9C show a variant of Figures 4A to 4C, in the form of a spacer component 10a as a further example of an alignment structure. The spacer component 10a comprises a foot 12a that provides the same anchoring region as the spacer component 10, and an integral socket structure 18a, integrally formed with a spacer body, here a spacer body 20a. The spacer body 20a is sufficiently long to provide a bed 21 for location of the base plate 52 of the anti-tamper component 50. The footprint or inner periphery of the bed 21 may provide a free edge corresponding to the footprint contour of the base plate 52. The bed 21 may be provided by an opening in the body of the spacer body 20a, in the manner of a frame. Alternatively, the bed 21 may be provided by a closed recess in the spacer body 20a. As will be appreciated, the depth of the closed recess may determine the seating height of the anti-tamper component 50. The bed 21 may be used in combination with packers to allow the height of the anti-tamper component 50 to be adjusted. Alternatively, different variants of a spacer component 10a may comprise closed recesses of different depth to thereby allow the effective height of the anti-tamper structure 50 to be adjusted without need for a packer. For instance, the anti-tamper structure 50 in Figures 9A to 9C may have the same shape as the anti-tamper component in Figures 4A to 4C, wherein the bed 21 allows the same anti-tamper component to be positioned higher relative to the frame profile underneath. Figures 10A to 10C show a further variant of Figures 5A to 5C, in the form of a spacer component 10b, constituting another variant of an alignment structure. The spacer component 10b comprises, like the spacer component 10a, a foot 12b providing the same anchoring region as the spacer component 10, and an integral socket structure 18b, integrally formed with a spacer body, here a spacer body 20b. The spacer body 20b is of elongate extension and includes an integrally formed retainer region 21b comprising an anti-tamper element 50c. The integrally formed retainer structure provides a spacer body that is shaped to define the location of the anti-tamper element 50c relative to the anchoring region 12b and, in this example, also relative to an integrally formed a socket structure 18b. While not illustrated in the drawings, it will be appreciated that a variant of the second spacer component 30 may be provided with a bed, corresponding to the bed 21 described in relation to Figures 9A to 9C. Alternatively, another variant of the second spacer component 30 may be provided with an integrally formed retainer structure and anti-tamper element, corresponding to the retainer region 21b and anti-tamper element 50c described in relation to Figures 10A to 10C. Likewise, variants of the second spacer component may comprise integrally formed finger structures (see finger structure 31 in Figure 6) for cooperation with a socket structure 18, where provided, as part of a compression-assist mechanism. The spacer components 10 and 30 may be made from a suitable material, for instance from moulded plastic material such as ABS, nylon, or other suitable material. The spacer components may comprise a coating. When formed with an integral socket structure, the spacer component 10 may be from a low-friction material, such as nylon. An appreciation underlying some embodiments of the invention was that the alignment structure itself is not necessarily relied upon for maintaining an anti-tamper function, because the anti-tamper component, once affixed to the frame or panel, respectively, performs independently of the alignment structure. As such, the alignment structure may be made from a relatively weak material, unless desired otherwise, or from a material selected for its weather sealing performance. Figures 11A to 11C show an alignment structure 10c. The alignment structure is of multi-part form, here comprised of two parts including a first part 15a and a second part 25a. The first part 15a of the alignment structure 10c provides an anchoring region and comprises a foot 12c comprising an integral socket structure 18c. The body portion providing the socket structure 18c comprises a free end 17, opposite the foot 12c, oriented in the direction, when installed, in which an anti-tamper component 50 is to be located. The free end 17 comprises a connector structure 19, the connector structure 19 comprising a first-part interface region 19a and an arrangement of, here: two, studs 19b extending from the first-part interface region 19a. The first-part interface region 19a may be a plateau region from which studs extend. The two studs 19b of the illustrated embodiment extend perpendicularly away from the first-part interface region 19a, although in other embodiments, the two studs 19b may extend at a non-orthogonal angle, e.g. at an acute angle, from the first-part interface region 19a. The second part 25a of the alignment structure 10c is shaped to provide the spacer body 20c. The spacer body 20c comprises a free edge 22c. Furthermore, the spacer body 20c comprises a connector structure 26a comprising a second-part interface region 28a and an arrangement of, here: two, sockets 29a. The sockets 29a are shaped to permit connection with the studs 19b, such that the second part 25a is attachable to the first part 15a via engagement of the studs 19b and corresponding sockets 29a, respectively. The first-part interface region 19a and the second-part interface region 28a are in abutment and reduce the freedom of movement of the connection, thereby contributing to a stable connection of the studs 19b in the sockets 29a. Both the first-part interface region 19a and the second-part interface region 28a may each comprise a generally flat region, in the form of a plateau, having a footprint within which the studs 19b and sockets 29a are located. The studs 19b and sockets 29a constitute an example of mutually engageable connector structures. The connector structures are oriented and shaped such that they permit attachment of the second part 25a to the first part 15a, when the second part 25a is pre-installed on a window structure, for instance as an end cap of a hinge assembly. The studs 19b are within the footprint of the first-part interface region 19a and thereby designed to allow them to remain exposed until a corresponding second part 25a is attached. The spacer body 20c comprises a relatively thin profile between the free edge 22c and the connector structure 26a. In some embodiments, the spacer body 20c comprises a larger cross-section, for instance to conceal the studs 19b after connection. Figure 11B illustrates an alignment structure 10c assembled by connection of the first part 15a with the second part 25a. Figure 11C illustrates an alignment structure 10c and an anti-tamper component 50 located in alignment with the free edge 22c. The arrangement of illustrated in Figures 11A to 11C allows a first part 15a of the connector arrangement to be attached as an end cap, or end nose cap, comprising a socket structure 18c. As will be appreciated, in this manner, the first part 15 can be provided instead of a conventional end cap with a hinge assembly. If, or as and when, it is desired to provide a locating structure for an anti-tamper component, the locating structure may be attached via the mutually engaging connector structures. The connection mechanism results in a secure retention and positioning of the second part 25a on, or to, the anchoring region provided by the first part 15a. The connector arrangement of the alignment structure 10c enables the use of different locator structures, in the form of differently shaped second parts 25a, for instance to be able to use the same first part 15a, providing a foot 12c for attachment to a stay hinge, with one of several second parts 25a, providing one of several desired geometries for the position and shape of the free edge 22c. Conversely, the same second part 25a may be combined with different foot geometries shaped to fit to different stay hinge designs and / or weather seal variants. Figures 12A to 12D show an alignment structure 10d that is a variant of the alignment structure 10c. The alignment structure is of multi-part form, here comprised of two parts including a first part 15b and a second part 25b. Figures 12A and 12B show isometric front and back views, respectively, of separated component parts 15b,25b of the alignment structure 10d. Figures 12C and 12D show isometric front and back views, respectively, of the separated parts assembled to form the alignment structure 10d. The first part 15b of the alignment structure 10d provides an anchoring region and comprises a foot 12d comprising an integral socket structure 18d. The body portion providing the socket structure 18d comprises a free end 17d, opposite the foot 12d, oriented in the direction, when installed, in which an anti-tamper component 50 is to be located. The free end 17d comprises a connector structure 21, the connector structure 21 comprising a first-part interface region 21a and, extending from the first-part interface region 21a, a protrusion 21b comprising a dovetail profile. As such, the protrusion 21b comprises a neck and a larger-cross-section head (of larger crosssection than the neck) carried by the neck. The second part 25b of the alignment structure 10d is shaped to provide the spacer body 20d. The spacer body 20d comprises a free edge 22d. Furthermore, the spacer body 20d comprises a connector structure 26b comprising a second-part interface region 28b and a socket arrangement in the form of a recess 29b comprising a dovetail profile. The recess 29b is profiled to fit onto the dovetail profile of the protrusion 21b, whereby the second part 25b is slidably attachable to the first part 15b via engagement of the recess 29b over the corresponding protrusion 21b. The first-part interface region 21a and the second-part interface region 28b are in abutment and reduce the freedom of movement of the connection, thereby contributing to a stable connection of the protrusion 21b in the recess 29b. The first-part interface region 21a and the second-part interface region 28b may each comprise a generally flat region, in the form of a plateau, having a footprint within which the protrusion 21b and the recess 29b are located. The protrusion 21b and recess 29b constitute another example of mutually engageable connector structures. The connector structures are oriented and shaped such that they permit attachment of the second part 25b to the first part 15b, when the second part 25b is pre-installed on a window structure, for instance as an end cap of a hinge assembly. The protrusion 21b is within the footprint of the first-part interface region 21a and thereby designed to allow it to remain exposed until a corresponding second part 25b is attached. The connector structures 19b, 29a and 21b, 26b, are shaped to permit engagement and attachment of a second part 25a, 25b onto a first part 15a, 15b, respectively, when the first part is already installed on a window structure. To this end, the attachment comprises a sliding engagement, a turn-fit, or a push-fit engagement along an engagement axis in a direction towards one of the two corner surfaces of the window or door, respectively. In many embodiments, the engagement axis may be generally perpendicular or generally parallel to an extension of the stay hinge. In some embodiments, the engagement axis may be diagonal relative to the stay hinge. As illustrated in Figures 11A, 11B, and 12A to 12D, the free edge 22c, 22d may be provided with a web portion 23c, 23d, respectively, that may be located, when installed, underneath a portion of the anti-tamper component 50. The web portion 23c, 23d may be provided, as illustrated, to provide an underlying abutment surface, for instance to inhibit over-insertion of an anti-tamper component into a groove underneath. Alternatively, in some embodiments, the web portion 23c,23d may be omitted such that the free edge 22c,22d is open to both sides of the respective spacer body 20c,20d, to extend through the full thickness of the spacer body. In embodiments comprising multiple parts that are attachable via mutually engaging connectors to form an alignment structure, the multiple parts may have the same composition or may have different composition. For instance, different parts may have the same material composition. The parts may have the same colour or different colours. For instance, for systems comprising handed chuted sockets, two parts for a left-handed alignment structure may have a first colour, and two parts for a right-handed (or oppositely handed) alignment structure may have a second colour. In many embodiments, the mutually engageable connector structures are symmetric so as to allow the same second part (providing a location for an anti-tamper structure) to be used with both a left-handed variant of the first part and a right-handed variant of the first part, as the case may be. The connection of the connector structures may be relatively tight so as to inhibit disassembly without the use of tools. For practical purposes, corresponding connector structures may be shaped to connect via a tight fit, such as an interference fit or tight transition fit, to be practically not detachable once assembled. In this manner, relative movement of the free edge relative to the anchoring portion can be reduced, and practically ruled out. The first part and second part of a multi-part alignment structure may be designed such that attachment of one part onto the other results both in a connection and in alignment of the two corresponding connector structures 19, 26a or 21, 26b, respectively. For instance, the footprint of the corresponding connector structures may be matched, for instance by a profile of matching shape, to provide an indication, suitable for visual inspection that, the connector structures are properly assembled to an alignment structure. In this manner, the multi-part alignment structure provides reassurance that an anti-tamper component, when aligned with the free edge 22c, 22d, is also aligned as intended with the hinge subassembly and / or with a corner of a frame structure, respectively. For the purposes of illustrating exemplary embodiments of the invention, the embodiments show the same anti-tamper component 50 on both the panel and frame. In some embodiments, different anti-tamper components may be used, for instance a hook-profiled anti-tamper component as illustrated in the Figures, and a slotted plate to provide an engageable structure for the anti-tamper component. The geometry of the socket structure 18 may be handed, e.g. may be asymmetric and shaped for left-hung hinges or right-hung hinges. Alternatively, the socket structure may be symmetric, such that the same alignment structure may be used for opposite hinges of a pair of hinges. In normal operation, the anti-tamper device is understood to be used as part of a door or window frame system comprising a panel hingedly mounted in a frame, the panel removable from the frame in a removal direction and closable into the frame in a seating direction, wherein the system is provided with one or more anti-tamper components installed in an aligned position defined by an alignment structure of the invention. The one or more anti-tamper components are located at an interface between the panel and the frame, and oriented such that forcible movement of the panel out of the frame, to dislodge the panel, results in abutment of a retaining edge of the anti-tamper device with a corresponding structure of the other of the panel and the frame, resisting further opening of the panel. While many embodiments provide a location of the alignment structure for direct abutment of an anti-tamper component, some embodiments of the invention may comprise intermediary spacers (to adjust spacing along the profile) and / or packers (to adjust stack height) between the alignment structure and the anti-tamper component. The invention may be used in the refurbishing and repair of door and window systems. As will be appreciated, if it is desired to replace an anti-tamper component, the appropriate location thereof is facilitated when this is indicated by the presence of the alignment structure of the invention. Whilst the principle of the invention has been illustrated using exemplary embodiments, it will be understood that the invention is not so limited, and that the invention may be embodied by other variants defined within the scope of the appended claims.

Claims

1. An alignment system for location of an anti-tamper structure for a hinged window or door, the alignment system comprising an alignment structure comprising an anchoring region and a spacer body, wherein the anchoring region comprises at least one engagement region for abutment relative to two comer surfaces forming a corner region of the window or door, and wherein the spacer body is shaped to define a location for the anti-tamper structure relative to the anchoring region.

2. The alignment system according to claim 1, wherein the at least one engagement region is attachable to a hinge subassembly and wherein the spacer body provides a predefined location for the anti-tamper structure relative to the hinge subassembly.

3. The alignment system according to claim 2, wherein the hinge subassembly is part of a stay hinge.

4. The alignment system according to claim 2 or 3, wherein the anchoring region is integral with the hinge subassembly.

5. The alignment system according to any one of the preceding claims, wherein the at least one engagement region is configured for abutment with two outward-facing corner surfaces of an inside corner.

6. The alignment system according to any one of the preceding claims, wherein the at least one engagement region is configured for abutment with two inward-facing corner surfaces of a framing corner.

7. The alignment system according to any one of the preceding claims, comprising two alignment structures, one alignment structure for a frame of a hinged window or door, and another alignment structure for a panel of the hinged window or door.

8. The alignment system according to claim 7, comprising two anti-tamper structures of same engagement profile, or of same shape.

9. The alignment system according to any one of the preceding claims, wherein the location defined by the spacer body comprises a profiled portion, the profiled portion for abutment with an anti-tamper structure.

10. The alignment system according to any one of the preceding claims, wherein the location defined by the spacer body comprises a bed for location of the anti-tamper structure.

11. The alignment system according to any one of the preceding claims, wherein the anti-tamper structure is integral with the alignment structure, thereby being located at the defined location relative to the anchoring region.

12. The alignment system according to any one of the preceding claims, wherein the alignment structure comprises a compression-assist mechanism, wherein the compression-assist mechanism is positioned spaced from the predefined location for the anti-tamper structure.

13. The alignment system according to any one of the preceding claims, wherein the alignment structure comprises at least two parts including a first part providing the anchoring region, a second part providing the spacer body shaped to define a location for the anti-tamper structure, wherein the first part and the second part comprise mutually engageable connector structures attachable to one another to connect the first part and the second part thereby to form the alignment structure.

14. The alignment system according to claim 13, when depending from claim 12, wherein one of the parts comprises a socket of the compression-assist mechanism.

15. The alignment system according to claim 14, wherein the socket of the compression-assist mechanism is comprised in the first part providing the anchoring region, and wherein, optionally, the mutually engageable connector structures are spaced from the socket.

16. A hinge subassembly comprising a hinge mechanism for attachment to a frame or panel, and further comprising an alignment structure to provide an alignment system according to any one of the preceding claims.

17. The hinge subassembly according to claim 16, comprised in a kit of parts comprising two hinge subassemblies, one for attachment to a frame, the other for attachment to a panel, each comprising an alignment structure to provide an alignment system according to any one of claims 1 to 15.

18. A door or window frame system comprising a panel hingedly mounted in a frame, wherein at least one of the panel and the frame is provided with an alignment structure according to any one of claims 1 to 15.

19. The frame system according to claim 18, further comprising an anti-tamper structure installed to one of the panel and frame positioned in abutment with the alignment structure.

20. The system according to claim 18 or 19, comprising two anti-tamper structures of identical shape.

21. A method of manufacturing a door or window frame system according to any one of the preceding claims, the method comprising providing one of a frame and a panel, installing a first alignment structure according to any one of claims 1 to 15 in abutment relative to two corner surfaces of a corner of the one of the frame and the panel, and leaving a free edge of the first alignment structure exposed for subsequent attachment of a first anti-tamper component.

22. The method according to claim 21, comprising attaching the first anti-tamper component to the one of the frame and the panel, comprising abutting an end of the first anti-tamper component with the free edge of the first alignment structure, and affixing the first anti-tamper component to the one of the frame and the panel while in abutment with the end of the first anti-tamper component.

23. The method according to claim 21 or 22, comprising providing another one of a frame and a panel, installing a second alignment structure according to any one of claims 1 to 15 in abutment relative to two corner surfaces of a corner of the other of the frame and the panel, and leaving a free edge of the second alignment structure exposed for subsequent attachment of a second anti-tamper component.

24. The method according to claim 23, comprising attaching the second anti-tamper component to the other of the frame and the panel, comprising abutting an end of the second anti-tamper component with the free edge of the second alignment structure, and affixing the second anti-tamper component to the other of the frame and the panel while in abutment with the end of the second anti-tamper component.

25. A method of manufacturing a door or window frame system according to any one of claims 1 to 20, the method comprising providing one of a frame and a panel, installing a first alignment structure according to any one of claims 1 to 15 in abutment with two corner surfaces of a corner of the one of the frame and the panel, the alignment structure comprising an integral anti-tamper component.

26. The method according to claim 25, comprising providing the other of the frame and the panel, installing a second alignment structure according to any one of claims 1 to 15 in abutment with two corner surfaces of a corner of the other of the frame and the panel, the alignment structure comprising an integral anti-tamper component.

27. The method according to any one of claims 21 to 26, comprising assembling the panel in the frame to form a window system.

28. The method according to any one of claims 21 to 27, comprising attaching a plurality of first alignment structures to a plurality of frames in a first production line, attaching a plurality of second alignment structures to a plurality of panels in a second production line, providing a pair of corresponding frame and panel with anti-tamper components, and assembling a window system from the pair of corresponding frame and panel.

Images